/* Copyright 2012 Mozilla Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /*jshint globalstrict: false */ /* globals PDFJS */ // Initializing PDFJS global object (if still undefined) if (typeof PDFJS === 'undefined') { (typeof window !== 'undefined' ? window : this).PDFJS = {}; } PDFJS.version = '1.3.91'; PDFJS.build = 'd1e83b5'; (function pdfjsWrapper() { // Use strict in our context only - users might not want it 'use strict'; var globalScope = (typeof window === 'undefined') ? this : window; var isWorker = (typeof window === 'undefined'); var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0]; var TextRenderingMode = { FILL: 0, STROKE: 1, FILL_STROKE: 2, INVISIBLE: 3, FILL_ADD_TO_PATH: 4, STROKE_ADD_TO_PATH: 5, FILL_STROKE_ADD_TO_PATH: 6, ADD_TO_PATH: 7, FILL_STROKE_MASK: 3, ADD_TO_PATH_FLAG: 4 }; var ImageKind = { GRAYSCALE_1BPP: 1, RGB_24BPP: 2, RGBA_32BPP: 3 }; var AnnotationType = { TEXT: 1, LINK: 2, FREETEXT: 3, LINE: 4, SQUARE: 5, CIRCLE: 6, POLYGON: 7, POLYLINE: 8, HIGHLIGHT: 9, UNDERLINE: 10, SQUIGGLY: 11, STRIKEOUT: 12, STAMP: 13, CARET: 14, INK: 15, POPUP: 16, FILEATTACHMENT: 17, SOUND: 18, MOVIE: 19, WIDGET: 20, SCREEN: 21, PRINTERMARK: 22, TRAPNET: 23, WATERMARK: 24, THREED: 25, REDACT: 26 }; var AnnotationFlag = { INVISIBLE: 0x01, HIDDEN: 0x02, PRINT: 0x04, NOZOOM: 0x08, NOROTATE: 0x10, NOVIEW: 0x20, READONLY: 0x40, LOCKED: 0x80, TOGGLENOVIEW: 0x100, LOCKEDCONTENTS: 0x200 }; var AnnotationBorderStyleType = { SOLID: 1, DASHED: 2, BEVELED: 3, INSET: 4, UNDERLINE: 5 }; var StreamType = { UNKNOWN: 0, FLATE: 1, LZW: 2, DCT: 3, JPX: 4, JBIG: 5, A85: 6, AHX: 7, CCF: 8, RL: 9 }; var FontType = { UNKNOWN: 0, TYPE1: 1, TYPE1C: 2, CIDFONTTYPE0: 3, CIDFONTTYPE0C: 4, TRUETYPE: 5, CIDFONTTYPE2: 6, TYPE3: 7, OPENTYPE: 8, TYPE0: 9, MMTYPE1: 10 }; // The global PDFJS object exposes the API // In production, it will be declared outside a global wrapper // In development, it will be declared here if (!globalScope.PDFJS) { globalScope.PDFJS = {}; } globalScope.PDFJS.pdfBug = false; PDFJS.VERBOSITY_LEVELS = { errors: 0, warnings: 1, infos: 5 }; // All the possible operations for an operator list. var OPS = PDFJS.OPS = { // Intentionally start from 1 so it is easy to spot bad operators that will be // 0's. dependency: 1, setLineWidth: 2, setLineCap: 3, setLineJoin: 4, setMiterLimit: 5, setDash: 6, setRenderingIntent: 7, setFlatness: 8, setGState: 9, save: 10, restore: 11, transform: 12, moveTo: 13, lineTo: 14, curveTo: 15, curveTo2: 16, curveTo3: 17, closePath: 18, rectangle: 19, stroke: 20, closeStroke: 21, fill: 22, eoFill: 23, fillStroke: 24, eoFillStroke: 25, closeFillStroke: 26, closeEOFillStroke: 27, endPath: 28, clip: 29, eoClip: 30, beginText: 31, endText: 32, setCharSpacing: 33, setWordSpacing: 34, setHScale: 35, setLeading: 36, setFont: 37, setTextRenderingMode: 38, setTextRise: 39, moveText: 40, setLeadingMoveText: 41, setTextMatrix: 42, nextLine: 43, showText: 44, showSpacedText: 45, nextLineShowText: 46, nextLineSetSpacingShowText: 47, setCharWidth: 48, setCharWidthAndBounds: 49, setStrokeColorSpace: 50, setFillColorSpace: 51, setStrokeColor: 52, setStrokeColorN: 53, setFillColor: 54, setFillColorN: 55, setStrokeGray: 56, setFillGray: 57, setStrokeRGBColor: 58, setFillRGBColor: 59, setStrokeCMYKColor: 60, setFillCMYKColor: 61, shadingFill: 62, beginInlineImage: 63, beginImageData: 64, endInlineImage: 65, paintXObject: 66, markPoint: 67, markPointProps: 68, beginMarkedContent: 69, beginMarkedContentProps: 70, endMarkedContent: 71, beginCompat: 72, endCompat: 73, paintFormXObjectBegin: 74, paintFormXObjectEnd: 75, beginGroup: 76, endGroup: 77, beginAnnotations: 78, endAnnotations: 79, beginAnnotation: 80, endAnnotation: 81, paintJpegXObject: 82, paintImageMaskXObject: 83, paintImageMaskXObjectGroup: 84, paintImageXObject: 85, paintInlineImageXObject: 86, paintInlineImageXObjectGroup: 87, paintImageXObjectRepeat: 88, paintImageMaskXObjectRepeat: 89, paintSolidColorImageMask: 90, constructPath: 91 }; // A notice for devs. These are good for things that are helpful to devs, such // as warning that Workers were disabled, which is important to devs but not // end users. function info(msg) { if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.infos) { console.log('Info: ' + msg); } } // Non-fatal warnings. function warn(msg) { if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.warnings) { console.log('Warning: ' + msg); } } // Deprecated API function -- treated as warnings. function deprecated(details) { warn('Deprecated API usage: ' + details); } // Fatal errors that should trigger the fallback UI and halt execution by // throwing an exception. function error(msg) { if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.errors) { console.log('Error: ' + msg); console.log(backtrace()); } throw new Error(msg); } function backtrace() { try { throw new Error(); } catch (e) { return e.stack ? e.stack.split('\n').slice(2).join('\n') : ''; } } function assert(cond, msg) { if (!cond) { error(msg); } } var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = { unknown: 'unknown', forms: 'forms', javaScript: 'javaScript', smask: 'smask', shadingPattern: 'shadingPattern', font: 'font' }; // Combines two URLs. The baseUrl shall be absolute URL. If the url is an // absolute URL, it will be returned as is. function combineUrl(baseUrl, url) { if (!url) { return baseUrl; } return new URL(url, baseUrl).href; } // Validates if URL is safe and allowed, e.g. to avoid XSS. function isValidUrl(url, allowRelative) { if (!url) { return false; } // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1) // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url); if (!protocol) { return allowRelative; } protocol = protocol[0].toLowerCase(); switch (protocol) { case 'http': case 'https': case 'ftp': case 'mailto': case 'tel': return true; default: return false; } } PDFJS.isValidUrl = isValidUrl; function shadow(obj, prop, value) { Object.defineProperty(obj, prop, { value: value, enumerable: true, configurable: true, writable: false }); return value; } PDFJS.shadow = shadow; var LinkTarget = PDFJS.LinkTarget = { NONE: 0, // Default value. SELF: 1, BLANK: 2, PARENT: 3, TOP: 4, }; var LinkTargetStringMap = [ '', '_self', '_blank', '_parent', '_top' ]; function isExternalLinkTargetSet() { if (PDFJS.openExternalLinksInNewWindow) { deprecated('PDFJS.openExternalLinksInNewWindow, please use ' + '"PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK" instead.'); if (PDFJS.externalLinkTarget === LinkTarget.NONE) { PDFJS.externalLinkTarget = LinkTarget.BLANK; } // Reset the deprecated parameter, to suppress further warnings. PDFJS.openExternalLinksInNewWindow = false; } switch (PDFJS.externalLinkTarget) { case LinkTarget.NONE: return false; case LinkTarget.SELF: case LinkTarget.BLANK: case LinkTarget.PARENT: case LinkTarget.TOP: return true; } warn('PDFJS.externalLinkTarget is invalid: ' + PDFJS.externalLinkTarget); // Reset the external link target, to suppress further warnings. PDFJS.externalLinkTarget = LinkTarget.NONE; return false; } PDFJS.isExternalLinkTargetSet = isExternalLinkTargetSet; var PasswordResponses = PDFJS.PasswordResponses = { NEED_PASSWORD: 1, INCORRECT_PASSWORD: 2 }; var PasswordException = (function PasswordExceptionClosure() { function PasswordException(msg, code) { this.name = 'PasswordException'; this.message = msg; this.code = code; } PasswordException.prototype = new Error(); PasswordException.constructor = PasswordException; return PasswordException; })(); PDFJS.PasswordException = PasswordException; var UnknownErrorException = (function UnknownErrorExceptionClosure() { function UnknownErrorException(msg, details) { this.name = 'UnknownErrorException'; this.message = msg; this.details = details; } UnknownErrorException.prototype = new Error(); UnknownErrorException.constructor = UnknownErrorException; return UnknownErrorException; })(); PDFJS.UnknownErrorException = UnknownErrorException; var InvalidPDFException = (function InvalidPDFExceptionClosure() { function InvalidPDFException(msg) { this.name = 'InvalidPDFException'; this.message = msg; } InvalidPDFException.prototype = new Error(); InvalidPDFException.constructor = InvalidPDFException; return InvalidPDFException; })(); PDFJS.InvalidPDFException = InvalidPDFException; var MissingPDFException = (function MissingPDFExceptionClosure() { function MissingPDFException(msg) { this.name = 'MissingPDFException'; this.message = msg; } MissingPDFException.prototype = new Error(); MissingPDFException.constructor = MissingPDFException; return MissingPDFException; })(); PDFJS.MissingPDFException = MissingPDFException; var UnexpectedResponseException = (function UnexpectedResponseExceptionClosure() { function UnexpectedResponseException(msg, status) { this.name = 'UnexpectedResponseException'; this.message = msg; this.status = status; } UnexpectedResponseException.prototype = new Error(); UnexpectedResponseException.constructor = UnexpectedResponseException; return UnexpectedResponseException; })(); PDFJS.UnexpectedResponseException = UnexpectedResponseException; var NotImplementedException = (function NotImplementedExceptionClosure() { function NotImplementedException(msg) { this.message = msg; } NotImplementedException.prototype = new Error(); NotImplementedException.prototype.name = 'NotImplementedException'; NotImplementedException.constructor = NotImplementedException; return NotImplementedException; })(); var MissingDataException = (function MissingDataExceptionClosure() { function MissingDataException(begin, end) { this.begin = begin; this.end = end; this.message = 'Missing data [' + begin + ', ' + end + ')'; } MissingDataException.prototype = new Error(); MissingDataException.prototype.name = 'MissingDataException'; MissingDataException.constructor = MissingDataException; return MissingDataException; })(); var XRefParseException = (function XRefParseExceptionClosure() { function XRefParseException(msg) { this.message = msg; } XRefParseException.prototype = new Error(); XRefParseException.prototype.name = 'XRefParseException'; XRefParseException.constructor = XRefParseException; return XRefParseException; })(); function bytesToString(bytes) { assert(bytes !== null && typeof bytes === 'object' && bytes.length !== undefined, 'Invalid argument for bytesToString'); var length = bytes.length; var MAX_ARGUMENT_COUNT = 8192; if (length < MAX_ARGUMENT_COUNT) { return String.fromCharCode.apply(null, bytes); } var strBuf = []; for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) { var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length); var chunk = bytes.subarray(i, chunkEnd); strBuf.push(String.fromCharCode.apply(null, chunk)); } return strBuf.join(''); } function stringToBytes(str) { assert(typeof str === 'string', 'Invalid argument for stringToBytes'); var length = str.length; var bytes = new Uint8Array(length); for (var i = 0; i < length; ++i) { bytes[i] = str.charCodeAt(i) & 0xFF; } return bytes; } function string32(value) { return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff, (value >> 8) & 0xff, value & 0xff); } function log2(x) { var n = 1, i = 0; while (x > n) { n <<= 1; i++; } return i; } function readInt8(data, start) { return (data[start] << 24) >> 24; } function readUint16(data, offset) { return (data[offset] << 8) | data[offset + 1]; } function readUint32(data, offset) { return ((data[offset] << 24) | (data[offset + 1] << 16) | (data[offset + 2] << 8) | data[offset + 3]) >>> 0; } // Lazy test the endianness of the platform // NOTE: This will be 'true' for simulated TypedArrays function isLittleEndian() { var buffer8 = new Uint8Array(2); buffer8[0] = 1; var buffer16 = new Uint16Array(buffer8.buffer); return (buffer16[0] === 1); } Object.defineProperty(PDFJS, 'isLittleEndian', { configurable: true, get: function PDFJS_isLittleEndian() { return shadow(PDFJS, 'isLittleEndian', isLittleEndian()); } }); // Lazy test if the userAgent support CanvasTypedArrays function hasCanvasTypedArrays() { var canvas = document.createElement('canvas'); canvas.width = canvas.height = 1; var ctx = canvas.getContext('2d'); var imageData = ctx.createImageData(1, 1); return (typeof imageData.data.buffer !== 'undefined'); } Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', { configurable: true, get: function PDFJS_hasCanvasTypedArrays() { return shadow(PDFJS, 'hasCanvasTypedArrays', hasCanvasTypedArrays()); } }); var Uint32ArrayView = (function Uint32ArrayViewClosure() { function Uint32ArrayView(buffer, length) { this.buffer = buffer; this.byteLength = buffer.length; this.length = length === undefined ? (this.byteLength >> 2) : length; ensureUint32ArrayViewProps(this.length); } Uint32ArrayView.prototype = Object.create(null); var uint32ArrayViewSetters = 0; function createUint32ArrayProp(index) { return { get: function () { var buffer = this.buffer, offset = index << 2; return (buffer[offset] | (buffer[offset + 1] << 8) | (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0; }, set: function (value) { var buffer = this.buffer, offset = index << 2; buffer[offset] = value & 255; buffer[offset + 1] = (value >> 8) & 255; buffer[offset + 2] = (value >> 16) & 255; buffer[offset + 3] = (value >>> 24) & 255; } }; } function ensureUint32ArrayViewProps(length) { while (uint32ArrayViewSetters < length) { Object.defineProperty(Uint32ArrayView.prototype, uint32ArrayViewSetters, createUint32ArrayProp(uint32ArrayViewSetters)); uint32ArrayViewSetters++; } } return Uint32ArrayView; })(); var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0]; var Util = PDFJS.Util = (function UtilClosure() { function Util() {} var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')']; // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids // creating many intermediate strings. Util.makeCssRgb = function Util_makeCssRgb(r, g, b) { rgbBuf[1] = r; rgbBuf[3] = g; rgbBuf[5] = b; return rgbBuf.join(''); }; // Concatenates two transformation matrices together and returns the result. Util.transform = function Util_transform(m1, m2) { return [ m1[0] * m2[0] + m1[2] * m2[1], m1[1] * m2[0] + m1[3] * m2[1], m1[0] * m2[2] + m1[2] * m2[3], m1[1] * m2[2] + m1[3] * m2[3], m1[0] * m2[4] + m1[2] * m2[5] + m1[4], m1[1] * m2[4] + m1[3] * m2[5] + m1[5] ]; }; // For 2d affine transforms Util.applyTransform = function Util_applyTransform(p, m) { var xt = p[0] * m[0] + p[1] * m[2] + m[4]; var yt = p[0] * m[1] + p[1] * m[3] + m[5]; return [xt, yt]; }; Util.applyInverseTransform = function Util_applyInverseTransform(p, m) { var d = m[0] * m[3] - m[1] * m[2]; var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d; var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d; return [xt, yt]; }; // Applies the transform to the rectangle and finds the minimum axially // aligned bounding box. Util.getAxialAlignedBoundingBox = function Util_getAxialAlignedBoundingBox(r, m) { var p1 = Util.applyTransform(r, m); var p2 = Util.applyTransform(r.slice(2, 4), m); var p3 = Util.applyTransform([r[0], r[3]], m); var p4 = Util.applyTransform([r[2], r[1]], m); return [ Math.min(p1[0], p2[0], p3[0], p4[0]), Math.min(p1[1], p2[1], p3[1], p4[1]), Math.max(p1[0], p2[0], p3[0], p4[0]), Math.max(p1[1], p2[1], p3[1], p4[1]) ]; }; Util.inverseTransform = function Util_inverseTransform(m) { var d = m[0] * m[3] - m[1] * m[2]; return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d]; }; // Apply a generic 3d matrix M on a 3-vector v: // | a b c | | X | // | d e f | x | Y | // | g h i | | Z | // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i], // with v as [X,Y,Z] Util.apply3dTransform = function Util_apply3dTransform(m, v) { return [ m[0] * v[0] + m[1] * v[1] + m[2] * v[2], m[3] * v[0] + m[4] * v[1] + m[5] * v[2], m[6] * v[0] + m[7] * v[1] + m[8] * v[2] ]; }; // This calculation uses Singular Value Decomposition. // The SVD can be represented with formula A = USV. We are interested in the // matrix S here because it represents the scale values. Util.singularValueDecompose2dScale = function Util_singularValueDecompose2dScale(m) { var transpose = [m[0], m[2], m[1], m[3]]; // Multiply matrix m with its transpose. var a = m[0] * transpose[0] + m[1] * transpose[2]; var b = m[0] * transpose[1] + m[1] * transpose[3]; var c = m[2] * transpose[0] + m[3] * transpose[2]; var d = m[2] * transpose[1] + m[3] * transpose[3]; // Solve the second degree polynomial to get roots. var first = (a + d) / 2; var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2; var sx = first + second || 1; var sy = first - second || 1; // Scale values are the square roots of the eigenvalues. return [Math.sqrt(sx), Math.sqrt(sy)]; }; // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2) // For coordinate systems whose origin lies in the bottom-left, this // means normalization to (BL,TR) ordering. For systems with origin in the // top-left, this means (TL,BR) ordering. Util.normalizeRect = function Util_normalizeRect(rect) { var r = rect.slice(0); // clone rect if (rect[0] > rect[2]) { r[0] = rect[2]; r[2] = rect[0]; } if (rect[1] > rect[3]) { r[1] = rect[3]; r[3] = rect[1]; } return r; }; // Returns a rectangle [x1, y1, x2, y2] corresponding to the // intersection of rect1 and rect2. If no intersection, returns 'false' // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2] Util.intersect = function Util_intersect(rect1, rect2) { function compare(a, b) { return a - b; } // Order points along the axes var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare), orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare), result = []; rect1 = Util.normalizeRect(rect1); rect2 = Util.normalizeRect(rect2); // X: first and second points belong to different rectangles? if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) || (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) { // Intersection must be between second and third points result[0] = orderedX[1]; result[2] = orderedX[2]; } else { return false; } // Y: first and second points belong to different rectangles? if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) || (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) { // Intersection must be between second and third points result[1] = orderedY[1]; result[3] = orderedY[2]; } else { return false; } return result; }; Util.sign = function Util_sign(num) { return num < 0 ? -1 : 1; }; Util.appendToArray = function Util_appendToArray(arr1, arr2) { Array.prototype.push.apply(arr1, arr2); }; Util.prependToArray = function Util_prependToArray(arr1, arr2) { Array.prototype.unshift.apply(arr1, arr2); }; Util.extendObj = function extendObj(obj1, obj2) { for (var key in obj2) { obj1[key] = obj2[key]; } }; Util.getInheritableProperty = function Util_getInheritableProperty(dict, name) { while (dict && !dict.has(name)) { dict = dict.get('Parent'); } if (!dict) { return null; } return dict.get(name); }; Util.inherit = function Util_inherit(sub, base, prototype) { sub.prototype = Object.create(base.prototype); sub.prototype.constructor = sub; for (var prop in prototype) { sub.prototype[prop] = prototype[prop]; } }; Util.loadScript = function Util_loadScript(src, callback) { var script = document.createElement('script'); var loaded = false; script.setAttribute('src', src); if (callback) { script.onload = function() { if (!loaded) { callback(); } loaded = true; }; } document.getElementsByTagName('head')[0].appendChild(script); }; return Util; })(); /** * PDF page viewport created based on scale, rotation and offset. * @class * @alias PDFJS.PageViewport */ var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { /** * @constructor * @private * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates. * @param scale {number} scale of the viewport. * @param rotation {number} rotations of the viewport in degrees. * @param offsetX {number} offset X * @param offsetY {number} offset Y * @param dontFlip {boolean} if true, axis Y will not be flipped. */ function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) { this.viewBox = viewBox; this.scale = scale; this.rotation = rotation; this.offsetX = offsetX; this.offsetY = offsetY; // creating transform to convert pdf coordinate system to the normal // canvas like coordinates taking in account scale and rotation var centerX = (viewBox[2] + viewBox[0]) / 2; var centerY = (viewBox[3] + viewBox[1]) / 2; var rotateA, rotateB, rotateC, rotateD; rotation = rotation % 360; rotation = rotation < 0 ? rotation + 360 : rotation; switch (rotation) { case 180: rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1; break; case 90: rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0; break; case 270: rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0; break; //case 0: default: rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1; break; } if (dontFlip) { rotateC = -rotateC; rotateD = -rotateD; } var offsetCanvasX, offsetCanvasY; var width, height; if (rotateA === 0) { offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX; offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY; width = Math.abs(viewBox[3] - viewBox[1]) * scale; height = Math.abs(viewBox[2] - viewBox[0]) * scale; } else { offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX; offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY; width = Math.abs(viewBox[2] - viewBox[0]) * scale; height = Math.abs(viewBox[3] - viewBox[1]) * scale; } // creating transform for the following operations: // translate(-centerX, -centerY), rotate and flip vertically, // scale, and translate(offsetCanvasX, offsetCanvasY) this.transform = [ rotateA * scale, rotateB * scale, rotateC * scale, rotateD * scale, offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY, offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY ]; this.width = width; this.height = height; this.fontScale = scale; } PageViewport.prototype = /** @lends PDFJS.PageViewport.prototype */ { /** * Clones viewport with additional properties. * @param args {Object} (optional) If specified, may contain the 'scale' or * 'rotation' properties to override the corresponding properties in * the cloned viewport. * @returns {PDFJS.PageViewport} Cloned viewport. */ clone: function PageViewPort_clone(args) { args = args || {}; var scale = 'scale' in args ? args.scale : this.scale; var rotation = 'rotation' in args ? args.rotation : this.rotation; return new PageViewport(this.viewBox.slice(), scale, rotation, this.offsetX, this.offsetY, args.dontFlip); }, /** * Converts PDF point to the viewport coordinates. For examples, useful for * converting PDF location into canvas pixel coordinates. * @param x {number} X coordinate. * @param y {number} Y coordinate. * @returns {Object} Object that contains 'x' and 'y' properties of the * point in the viewport coordinate space. * @see {@link convertToPdfPoint} * @see {@link convertToViewportRectangle} */ convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) { return Util.applyTransform([x, y], this.transform); }, /** * Converts PDF rectangle to the viewport coordinates. * @param rect {Array} xMin, yMin, xMax and yMax coordinates. * @returns {Array} Contains corresponding coordinates of the rectangle * in the viewport coordinate space. * @see {@link convertToViewportPoint} */ convertToViewportRectangle: function PageViewport_convertToViewportRectangle(rect) { var tl = Util.applyTransform([rect[0], rect[1]], this.transform); var br = Util.applyTransform([rect[2], rect[3]], this.transform); return [tl[0], tl[1], br[0], br[1]]; }, /** * Converts viewport coordinates to the PDF location. For examples, useful * for converting canvas pixel location into PDF one. * @param x {number} X coordinate. * @param y {number} Y coordinate. * @returns {Object} Object that contains 'x' and 'y' properties of the * point in the PDF coordinate space. * @see {@link convertToViewportPoint} */ convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) { return Util.applyInverseTransform([x, y], this.transform); } }; return PageViewport; })(); var PDFStringTranslateTable = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C, 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160, 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC ]; function stringToPDFString(str) { var i, n = str.length, strBuf = []; if (str[0] === '\xFE' && str[1] === '\xFF') { // UTF16BE BOM for (i = 2; i < n; i += 2) { strBuf.push(String.fromCharCode( (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1))); } } else { for (i = 0; i < n; ++i) { var code = PDFStringTranslateTable[str.charCodeAt(i)]; strBuf.push(code ? String.fromCharCode(code) : str.charAt(i)); } } return strBuf.join(''); } function stringToUTF8String(str) { return decodeURIComponent(escape(str)); } function utf8StringToString(str) { return unescape(encodeURIComponent(str)); } function isEmptyObj(obj) { for (var key in obj) { return false; } return true; } function isBool(v) { return typeof v === 'boolean'; } function isInt(v) { return typeof v === 'number' && ((v | 0) === v); } function isNum(v) { return typeof v === 'number'; } function isString(v) { return typeof v === 'string'; } function isName(v) { return v instanceof Name; } function isCmd(v, cmd) { return v instanceof Cmd && (cmd === undefined || v.cmd === cmd); } function isDict(v, type) { if (!(v instanceof Dict)) { return false; } if (!type) { return true; } var dictType = v.get('Type'); return isName(dictType) && dictType.name === type; } function isArray(v) { return v instanceof Array; } function isStream(v) { return typeof v === 'object' && v !== null && v.getBytes !== undefined; } function isArrayBuffer(v) { return typeof v === 'object' && v !== null && v.byteLength !== undefined; } function isRef(v) { return v instanceof Ref; } /** * Promise Capability object. * * @typedef {Object} PromiseCapability * @property {Promise} promise - A promise object. * @property {function} resolve - Fullfills the promise. * @property {function} reject - Rejects the promise. */ /** * Creates a promise capability object. * @alias PDFJS.createPromiseCapability * * @return {PromiseCapability} A capability object contains: * - a Promise, resolve and reject methods. */ function createPromiseCapability() { var capability = {}; capability.promise = new Promise(function (resolve, reject) { capability.resolve = resolve; capability.reject = reject; }); return capability; } PDFJS.createPromiseCapability = createPromiseCapability; /** * Polyfill for Promises: * The following promise implementation tries to generally implement the * Promise/A+ spec. Some notable differences from other promise libaries are: * - There currently isn't a seperate deferred and promise object. * - Unhandled rejections eventually show an error if they aren't handled. * * Based off of the work in: * https://bugzilla.mozilla.org/show_bug.cgi?id=810490 */ (function PromiseClosure() { if (globalScope.Promise) { // Promises existing in the DOM/Worker, checking presence of all/resolve if (typeof globalScope.Promise.all !== 'function') { globalScope.Promise.all = function (iterable) { var count = 0, results = [], resolve, reject; var promise = new globalScope.Promise(function (resolve_, reject_) { resolve = resolve_; reject = reject_; }); iterable.forEach(function (p, i) { count++; p.then(function (result) { results[i] = result; count--; if (count === 0) { resolve(results); } }, reject); }); if (count === 0) { resolve(results); } return promise; }; } if (typeof globalScope.Promise.resolve !== 'function') { globalScope.Promise.resolve = function (value) { return new globalScope.Promise(function (resolve) { resolve(value); }); }; } if (typeof globalScope.Promise.reject !== 'function') { globalScope.Promise.reject = function (reason) { return new globalScope.Promise(function (resolve, reject) { reject(reason); }); }; } if (typeof globalScope.Promise.prototype.catch !== 'function') { globalScope.Promise.prototype.catch = function (onReject) { return globalScope.Promise.prototype.then(undefined, onReject); }; } return; } var STATUS_PENDING = 0; var STATUS_RESOLVED = 1; var STATUS_REJECTED = 2; // In an attempt to avoid silent exceptions, unhandled rejections are // tracked and if they aren't handled in a certain amount of time an // error is logged. var REJECTION_TIMEOUT = 500; var HandlerManager = { handlers: [], running: false, unhandledRejections: [], pendingRejectionCheck: false, scheduleHandlers: function scheduleHandlers(promise) { if (promise._status === STATUS_PENDING) { return; } this.handlers = this.handlers.concat(promise._handlers); promise._handlers = []; if (this.running) { return; } this.running = true; setTimeout(this.runHandlers.bind(this), 0); }, runHandlers: function runHandlers() { var RUN_TIMEOUT = 1; // ms var timeoutAt = Date.now() + RUN_TIMEOUT; while (this.handlers.length > 0) { var handler = this.handlers.shift(); var nextStatus = handler.thisPromise._status; var nextValue = handler.thisPromise._value; try { if (nextStatus === STATUS_RESOLVED) { if (typeof handler.onResolve === 'function') { nextValue = handler.onResolve(nextValue); } } else if (typeof handler.onReject === 'function') { nextValue = handler.onReject(nextValue); nextStatus = STATUS_RESOLVED; if (handler.thisPromise._unhandledRejection) { this.removeUnhandeledRejection(handler.thisPromise); } } } catch (ex) { nextStatus = STATUS_REJECTED; nextValue = ex; } handler.nextPromise._updateStatus(nextStatus, nextValue); if (Date.now() >= timeoutAt) { break; } } if (this.handlers.length > 0) { setTimeout(this.runHandlers.bind(this), 0); return; } this.running = false; }, addUnhandledRejection: function addUnhandledRejection(promise) { this.unhandledRejections.push({ promise: promise, time: Date.now() }); this.scheduleRejectionCheck(); }, removeUnhandeledRejection: function removeUnhandeledRejection(promise) { promise._unhandledRejection = false; for (var i = 0; i < this.unhandledRejections.length; i++) { if (this.unhandledRejections[i].promise === promise) { this.unhandledRejections.splice(i); i--; } } }, scheduleRejectionCheck: function scheduleRejectionCheck() { if (this.pendingRejectionCheck) { return; } this.pendingRejectionCheck = true; setTimeout(function rejectionCheck() { this.pendingRejectionCheck = false; var now = Date.now(); for (var i = 0; i < this.unhandledRejections.length; i++) { if (now - this.unhandledRejections[i].time > REJECTION_TIMEOUT) { var unhandled = this.unhandledRejections[i].promise._value; var msg = 'Unhandled rejection: ' + unhandled; if (unhandled.stack) { msg += '\n' + unhandled.stack; } warn(msg); this.unhandledRejections.splice(i); i--; } } if (this.unhandledRejections.length) { this.scheduleRejectionCheck(); } }.bind(this), REJECTION_TIMEOUT); } }; function Promise(resolver) { this._status = STATUS_PENDING; this._handlers = []; try { resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); } catch (e) { this._reject(e); } } /** * Builds a promise that is resolved when all the passed in promises are * resolved. * @param {array} array of data and/or promises to wait for. * @return {Promise} New dependant promise. */ Promise.all = function Promise_all(promises) { var resolveAll, rejectAll; var deferred = new Promise(function (resolve, reject) { resolveAll = resolve; rejectAll = reject; }); var unresolved = promises.length; var results = []; if (unresolved === 0) { resolveAll(results); return deferred; } function reject(reason) { if (deferred._status === STATUS_REJECTED) { return; } results = []; rejectAll(reason); } for (var i = 0, ii = promises.length; i < ii; ++i) { var promise = promises[i]; var resolve = (function(i) { return function(value) { if (deferred._status === STATUS_REJECTED) { return; } results[i] = value; unresolved--; if (unresolved === 0) { resolveAll(results); } }; })(i); if (Promise.isPromise(promise)) { promise.then(resolve, reject); } else { resolve(promise); } } return deferred; }; /** * Checks if the value is likely a promise (has a 'then' function). * @return {boolean} true if value is thenable */ Promise.isPromise = function Promise_isPromise(value) { return value && typeof value.then === 'function'; }; /** * Creates resolved promise * @param value resolve value * @returns {Promise} */ Promise.resolve = function Promise_resolve(value) { return new Promise(function (resolve) { resolve(value); }); }; /** * Creates rejected promise * @param reason rejection value * @returns {Promise} */ Promise.reject = function Promise_reject(reason) { return new Promise(function (resolve, reject) { reject(reason); }); }; Promise.prototype = { _status: null, _value: null, _handlers: null, _unhandledRejection: null, _updateStatus: function Promise__updateStatus(status, value) { if (this._status === STATUS_RESOLVED || this._status === STATUS_REJECTED) { return; } if (status === STATUS_RESOLVED && Promise.isPromise(value)) { value.then(this._updateStatus.bind(this, STATUS_RESOLVED), this._updateStatus.bind(this, STATUS_REJECTED)); return; } this._status = status; this._value = value; if (status === STATUS_REJECTED && this._handlers.length === 0) { this._unhandledRejection = true; HandlerManager.addUnhandledRejection(this); } HandlerManager.scheduleHandlers(this); }, _resolve: function Promise_resolve(value) { this._updateStatus(STATUS_RESOLVED, value); }, _reject: function Promise_reject(reason) { this._updateStatus(STATUS_REJECTED, reason); }, then: function Promise_then(onResolve, onReject) { var nextPromise = new Promise(function (resolve, reject) { this.resolve = resolve; this.reject = reject; }); this._handlers.push({ thisPromise: this, onResolve: onResolve, onReject: onReject, nextPromise: nextPromise }); HandlerManager.scheduleHandlers(this); return nextPromise; }, catch: function Promise_catch(onReject) { return this.then(undefined, onReject); } }; globalScope.Promise = Promise; })(); var StatTimer = (function StatTimerClosure() { function rpad(str, pad, length) { while (str.length < length) { str += pad; } return str; } function StatTimer() { this.started = {}; this.times = []; this.enabled = true; } StatTimer.prototype = { time: function StatTimer_time(name) { if (!this.enabled) { return; } if (name in this.started) { warn('Timer is already running for ' + name); } this.started[name] = Date.now(); }, timeEnd: function StatTimer_timeEnd(name) { if (!this.enabled) { return; } if (!(name in this.started)) { warn('Timer has not been started for ' + name); } this.times.push({ 'name': name, 'start': this.started[name], 'end': Date.now() }); // Remove timer from started so it can be called again. delete this.started[name]; }, toString: function StatTimer_toString() { var i, ii; var times = this.times; var out = ''; // Find the longest name for padding purposes. var longest = 0; for (i = 0, ii = times.length; i < ii; ++i) { var name = times[i]['name']; if (name.length > longest) { longest = name.length; } } for (i = 0, ii = times.length; i < ii; ++i) { var span = times[i]; var duration = span.end - span.start; out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n'; } return out; } }; return StatTimer; })(); PDFJS.createBlob = function createBlob(data, contentType) { if (typeof Blob !== 'undefined') { return new Blob([data], { type: contentType }); } // Blob builder is deprecated in FF14 and removed in FF18. var bb = new MozBlobBuilder(); bb.append(data); return bb.getBlob(contentType); }; PDFJS.createObjectURL = (function createObjectURLClosure() { // Blob/createObjectURL is not available, falling back to data schema. var digits = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; return function createObjectURL(data, contentType) { if (!PDFJS.disableCreateObjectURL && typeof URL !== 'undefined' && URL.createObjectURL) { var blob = PDFJS.createBlob(data, contentType); return URL.createObjectURL(blob); } var buffer = 'data:' + contentType + ';base64,'; for (var i = 0, ii = data.length; i < ii; i += 3) { var b1 = data[i] & 0xFF; var b2 = data[i + 1] & 0xFF; var b3 = data[i + 2] & 0xFF; var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4); var d3 = i + 1 < ii ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64; var d4 = i + 2 < ii ? (b3 & 0x3F) : 64; buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4]; } return buffer; }; })(); function MessageHandler(sourceName, targetName, comObj) { this.sourceName = sourceName; this.targetName = targetName; this.comObj = comObj; this.callbackIndex = 1; this.postMessageTransfers = true; var callbacksCapabilities = this.callbacksCapabilities = {}; var ah = this.actionHandler = {}; this._onComObjOnMessage = function messageHandlerComObjOnMessage(event) { var data = event.data; if (data.targetName !== this.sourceName) { return; } if (data.isReply) { var callbackId = data.callbackId; if (data.callbackId in callbacksCapabilities) { var callback = callbacksCapabilities[callbackId]; delete callbacksCapabilities[callbackId]; if ('error' in data) { callback.reject(data.error); } else { callback.resolve(data.data); } } else { error('Cannot resolve callback ' + callbackId); } } else if (data.action in ah) { var action = ah[data.action]; if (data.callbackId) { var sourceName = this.sourceName; var targetName = data.sourceName; Promise.resolve().then(function () { return action[0].call(action[1], data.data); }).then(function (result) { comObj.postMessage({ sourceName: sourceName, targetName: targetName, isReply: true, callbackId: data.callbackId, data: result }); }, function (reason) { if (reason instanceof Error) { // Serialize error to avoid "DataCloneError" reason = reason + ''; } comObj.postMessage({ sourceName: sourceName, targetName: targetName, isReply: true, callbackId: data.callbackId, error: reason }); }); } else { action[0].call(action[1], data.data); } } else { error('Unknown action from worker: ' + data.action); } }.bind(this); comObj.addEventListener('message', this._onComObjOnMessage); } MessageHandler.prototype = { on: function messageHandlerOn(actionName, handler, scope) { var ah = this.actionHandler; if (ah[actionName]) { error('There is already an actionName called "' + actionName + '"'); } ah[actionName] = [handler, scope]; }, /** * Sends a message to the comObj to invoke the action with the supplied data. * @param {String} actionName Action to call. * @param {JSON} data JSON data to send. * @param {Array} [transfers] Optional list of transfers/ArrayBuffers */ send: function messageHandlerSend(actionName, data, transfers) { var message = { sourceName: this.sourceName, targetName: this.targetName, action: actionName, data: data }; this.postMessage(message, transfers); }, /** * Sends a message to the comObj to invoke the action with the supplied data. * Expects that other side will callback with the response. * @param {String} actionName Action to call. * @param {JSON} data JSON data to send. * @param {Array} [transfers] Optional list of transfers/ArrayBuffers. * @returns {Promise} Promise to be resolved with response data. */ sendWithPromise: function messageHandlerSendWithPromise(actionName, data, transfers) { var callbackId = this.callbackIndex++; var message = { sourceName: this.sourceName, targetName: this.targetName, action: actionName, data: data, callbackId: callbackId }; var capability = createPromiseCapability(); this.callbacksCapabilities[callbackId] = capability; try { this.postMessage(message, transfers); } catch (e) { capability.reject(e); } return capability.promise; }, /** * Sends raw message to the comObj. * @private * @param message {Object} Raw message. * @param transfers List of transfers/ArrayBuffers, or undefined. */ postMessage: function (message, transfers) { if (transfers && this.postMessageTransfers) { this.comObj.postMessage(message, transfers); } else { this.comObj.postMessage(message); } }, destroy: function () { this.comObj.removeEventListener('message', this._onComObjOnMessage); } }; function loadJpegStream(id, imageUrl, objs) { var img = new Image(); img.onload = (function loadJpegStream_onloadClosure() { objs.resolve(id, img); }); img.onerror = (function loadJpegStream_onerrorClosure() { objs.resolve(id, null); warn('Error during JPEG image loading'); }); img.src = imageUrl; } // Polyfill from https://github.com/Polymer/URL /* Any copyright is dedicated to the Public Domain. * http://creativecommons.org/publicdomain/zero/1.0/ */ (function checkURLConstructor(scope) { /* jshint ignore:start */ // feature detect for URL constructor var hasWorkingUrl = false; if (typeof URL === 'function' && ('origin' in URL.prototype)) { try { var u = new URL('b', 'http://a'); u.pathname = 'c%20d'; hasWorkingUrl = u.href === 'http://a/c%20d'; } catch(e) {} } if (hasWorkingUrl) return; var relative = Object.create(null); relative['ftp'] = 21; relative['file'] = 0; relative['gopher'] = 70; relative['http'] = 80; relative['https'] = 443; relative['ws'] = 80; relative['wss'] = 443; var relativePathDotMapping = Object.create(null); relativePathDotMapping['%2e'] = '.'; relativePathDotMapping['.%2e'] = '..'; relativePathDotMapping['%2e.'] = '..'; relativePathDotMapping['%2e%2e'] = '..'; function isRelativeScheme(scheme) { return relative[scheme] !== undefined; } function invalid() { clear.call(this); this._isInvalid = true; } function IDNAToASCII(h) { if ('' == h) { invalid.call(this) } // XXX return h.toLowerCase() } function percentEscape(c) { var unicode = c.charCodeAt(0); if (unicode > 0x20 && unicode < 0x7F && // " # < > ? ` [0x22, 0x23, 0x3C, 0x3E, 0x3F, 0x60].indexOf(unicode) == -1 ) { return c; } return encodeURIComponent(c); } function percentEscapeQuery(c) { // XXX This actually needs to encode c using encoding and then // convert the bytes one-by-one. var unicode = c.charCodeAt(0); if (unicode > 0x20 && unicode < 0x7F && // " # < > ` (do not escape '?') [0x22, 0x23, 0x3C, 0x3E, 0x60].indexOf(unicode) == -1 ) { return c; } return encodeURIComponent(c); } var EOF = undefined, ALPHA = /[a-zA-Z]/, ALPHANUMERIC = /[a-zA-Z0-9\+\-\.]/; function parse(input, stateOverride, base) { function err(message) { errors.push(message) } var state = stateOverride || 'scheme start', cursor = 0, buffer = '', seenAt = false, seenBracket = false, errors = []; loop: while ((input[cursor - 1] != EOF || cursor == 0) && !this._isInvalid) { var c = input[cursor]; switch (state) { case 'scheme start': if (c && ALPHA.test(c)) { buffer += c.toLowerCase(); // ASCII-safe state = 'scheme'; } else if (!stateOverride) { buffer = ''; state = 'no scheme'; continue; } else { err('Invalid scheme.'); break loop; } break; case 'scheme': if (c && ALPHANUMERIC.test(c)) { buffer += c.toLowerCase(); // ASCII-safe } else if (':' == c) { this._scheme = buffer; buffer = ''; if (stateOverride) { break loop; } if (isRelativeScheme(this._scheme)) { this._isRelative = true; } if ('file' == this._scheme) { state = 'relative'; } else if (this._isRelative && base && base._scheme == this._scheme) { state = 'relative or authority'; } else if (this._isRelative) { state = 'authority first slash'; } else { state = 'scheme data'; } } else if (!stateOverride) { buffer = ''; cursor = 0; state = 'no scheme'; continue; } else if (EOF == c) { break loop; } else { err('Code point not allowed in scheme: ' + c) break loop; } break; case 'scheme data': if ('?' == c) { this._query = '?'; state = 'query'; } else if ('#' == c) { this._fragment = '#'; state = 'fragment'; } else { // XXX error handling if (EOF != c && '\t' != c && '\n' != c && '\r' != c) { this._schemeData += percentEscape(c); } } break; case 'no scheme': if (!base || !(isRelativeScheme(base._scheme))) { err('Missing scheme.'); invalid.call(this); } else { state = 'relative'; continue; } break; case 'relative or authority': if ('/' == c && '/' == input[cursor+1]) { state = 'authority ignore slashes'; } else { err('Expected /, got: ' + c); state = 'relative'; continue } break; case 'relative': this._isRelative = true; if ('file' != this._scheme) this._scheme = base._scheme; if (EOF == c) { this._host = base._host; this._port = base._port; this._path = base._path.slice(); this._query = base._query; this._username = base._username; this._password = base._password; break loop; } else if ('/' == c || '\\' == c) { if ('\\' == c) err('\\ is an invalid code point.'); state = 'relative slash'; } else if ('?' == c) { this._host = base._host; this._port = base._port; this._path = base._path.slice(); this._query = '?'; this._username = base._username; this._password = base._password; state = 'query'; } else if ('#' == c) { this._host = base._host; this._port = base._port; this._path = base._path.slice(); this._query = base._query; this._fragment = '#'; this._username = base._username; this._password = base._password; state = 'fragment'; } else { var nextC = input[cursor+1] var nextNextC = input[cursor+2] if ( 'file' != this._scheme || !ALPHA.test(c) || (nextC != ':' && nextC != '|') || (EOF != nextNextC && '/' != nextNextC && '\\' != nextNextC && '?' != nextNextC && '#' != nextNextC)) { this._host = base._host; this._port = base._port; this._username = base._username; this._password = base._password; this._path = base._path.slice(); this._path.pop(); } state = 'relative path'; continue; } break; case 'relative slash': if ('/' == c || '\\' == c) { if ('\\' == c) { err('\\ is an invalid code point.'); } if ('file' == this._scheme) { state = 'file host'; } else { state = 'authority ignore slashes'; } } else { if ('file' != this._scheme) { this._host = base._host; this._port = base._port; this._username = base._username; this._password = base._password; } state = 'relative path'; continue; } break; case 'authority first slash': if ('/' == c) { state = 'authority second slash'; } else { err("Expected '/', got: " + c); state = 'authority ignore slashes'; continue; } break; case 'authority second slash': state = 'authority ignore slashes'; if ('/' != c) { err("Expected '/', got: " + c); continue; } break; case 'authority ignore slashes': if ('/' != c && '\\' != c) { state = 'authority'; continue; } else { err('Expected authority, got: ' + c); } break; case 'authority': if ('@' == c) { if (seenAt) { err('@ already seen.'); buffer += '%40'; } seenAt = true; for (var i = 0; i < buffer.length; i++) { var cp = buffer[i]; if ('\t' == cp || '\n' == cp || '\r' == cp) { err('Invalid whitespace in authority.'); continue; } // XXX check URL code points if (':' == cp && null === this._password) { this._password = ''; continue; } var tempC = percentEscape(cp); (null !== this._password) ? this._password += tempC : this._username += tempC; } buffer = ''; } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) { cursor -= buffer.length; buffer = ''; state = 'host'; continue; } else { buffer += c; } break; case 'file host': if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) { if (buffer.length == 2 && ALPHA.test(buffer[0]) && (buffer[1] == ':' || buffer[1] == '|')) { state = 'relative path'; } else if (buffer.length == 0) { state = 'relative path start'; } else { this._host = IDNAToASCII.call(this, buffer); buffer = ''; state = 'relative path start'; } continue; } else if ('\t' == c || '\n' == c || '\r' == c) { err('Invalid whitespace in file host.'); } else { buffer += c; } break; case 'host': case 'hostname': if (':' == c && !seenBracket) { // XXX host parsing this._host = IDNAToASCII.call(this, buffer); buffer = ''; state = 'port'; if ('hostname' == stateOverride) { break loop; } } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) { this._host = IDNAToASCII.call(this, buffer); buffer = ''; state = 'relative path start'; if (stateOverride) { break loop; } continue; } else if ('\t' != c && '\n' != c && '\r' != c) { if ('[' == c) { seenBracket = true; } else if (']' == c) { seenBracket = false; } buffer += c; } else { err('Invalid code point in host/hostname: ' + c); } break; case 'port': if (/[0-9]/.test(c)) { buffer += c; } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c || stateOverride) { if ('' != buffer) { var temp = parseInt(buffer, 10); if (temp != relative[this._scheme]) { this._port = temp + ''; } buffer = ''; } if (stateOverride) { break loop; } state = 'relative path start'; continue; } else if ('\t' == c || '\n' == c || '\r' == c) { err('Invalid code point in port: ' + c); } else { invalid.call(this); } break; case 'relative path start': if ('\\' == c) err("'\\' not allowed in path."); state = 'relative path'; if ('/' != c && '\\' != c) { continue; } break; case 'relative path': if (EOF == c || '/' == c || '\\' == c || (!stateOverride && ('?' == c || '#' == c))) { if ('\\' == c) { err('\\ not allowed in relative path.'); } var tmp; if (tmp = relativePathDotMapping[buffer.toLowerCase()]) { buffer = tmp; } if ('..' == buffer) { this._path.pop(); if ('/' != c && '\\' != c) { this._path.push(''); } } else if ('.' == buffer && '/' != c && '\\' != c) { this._path.push(''); } else if ('.' != buffer) { if ('file' == this._scheme && this._path.length == 0 && buffer.length == 2 && ALPHA.test(buffer[0]) && buffer[1] == '|') { buffer = buffer[0] + ':'; } this._path.push(buffer); } buffer = ''; if ('?' == c) { this._query = '?'; state = 'query'; } else if ('#' == c) { this._fragment = '#'; state = 'fragment'; } } else if ('\t' != c && '\n' != c && '\r' != c) { buffer += percentEscape(c); } break; case 'query': if (!stateOverride && '#' == c) { this._fragment = '#'; state = 'fragment'; } else if (EOF != c && '\t' != c && '\n' != c && '\r' != c) { this._query += percentEscapeQuery(c); } break; case 'fragment': if (EOF != c && '\t' != c && '\n' != c && '\r' != c) { this._fragment += c; } break; } cursor++; } } function clear() { this._scheme = ''; this._schemeData = ''; this._username = ''; this._password = null; this._host = ''; this._port = ''; this._path = []; this._query = ''; this._fragment = ''; this._isInvalid = false; this._isRelative = false; } // Does not process domain names or IP addresses. // Does not handle encoding for the query parameter. function jURL(url, base /* , encoding */) { if (base !== undefined && !(base instanceof jURL)) base = new jURL(String(base)); this._url = url; clear.call(this); var input = url.replace(/^[ \t\r\n\f]+|[ \t\r\n\f]+$/g, ''); // encoding = encoding || 'utf-8' parse.call(this, input, null, base); } jURL.prototype = { toString: function() { return this.href; }, get href() { if (this._isInvalid) return this._url; var authority = ''; if ('' != this._username || null != this._password) { authority = this._username + (null != this._password ? ':' + this._password : '') + '@'; } return this.protocol + (this._isRelative ? '//' + authority + this.host : '') + this.pathname + this._query + this._fragment; }, set href(href) { clear.call(this); parse.call(this, href); }, get protocol() { return this._scheme + ':'; }, set protocol(protocol) { if (this._isInvalid) return; parse.call(this, protocol + ':', 'scheme start'); }, get host() { return this._isInvalid ? '' : this._port ? this._host + ':' + this._port : this._host; }, set host(host) { if (this._isInvalid || !this._isRelative) return; parse.call(this, host, 'host'); }, get hostname() { return this._host; }, set hostname(hostname) { if (this._isInvalid || !this._isRelative) return; parse.call(this, hostname, 'hostname'); }, get port() { return this._port; }, set port(port) { if (this._isInvalid || !this._isRelative) return; parse.call(this, port, 'port'); }, get pathname() { return this._isInvalid ? '' : this._isRelative ? '/' + this._path.join('/') : this._schemeData; }, set pathname(pathname) { if (this._isInvalid || !this._isRelative) return; this._path = []; parse.call(this, pathname, 'relative path start'); }, get search() { return this._isInvalid || !this._query || '?' == this._query ? '' : this._query; }, set search(search) { if (this._isInvalid || !this._isRelative) return; this._query = '?'; if ('?' == search[0]) search = search.slice(1); parse.call(this, search, 'query'); }, get hash() { return this._isInvalid || !this._fragment || '#' == this._fragment ? '' : this._fragment; }, set hash(hash) { if (this._isInvalid) return; this._fragment = '#'; if ('#' == hash[0]) hash = hash.slice(1); parse.call(this, hash, 'fragment'); }, get origin() { var host; if (this._isInvalid || !this._scheme) { return ''; } // javascript: Gecko returns String(""), WebKit/Blink String("null") // Gecko throws error for "data://" // data: Gecko returns "", Blink returns "data://", WebKit returns "null" // Gecko returns String("") for file: mailto: // WebKit/Blink returns String("SCHEME://") for file: mailto: switch (this._scheme) { case 'data': case 'file': case 'javascript': case 'mailto': return 'null'; } host = this.host; if (!host) { return ''; } return this._scheme + '://' + host; } }; // Copy over the static methods var OriginalURL = scope.URL; if (OriginalURL) { jURL.createObjectURL = function(blob) { // IE extension allows a second optional options argument. // http://msdn.microsoft.com/en-us/library/ie/hh772302(v=vs.85).aspx return OriginalURL.createObjectURL.apply(OriginalURL, arguments); }; jURL.revokeObjectURL = function(url) { OriginalURL.revokeObjectURL(url); }; } scope.URL = jURL; /* jshint ignore:end */ })(globalScope); var DEFAULT_RANGE_CHUNK_SIZE = 65536; // 2^16 = 65536 /** * The maximum allowed image size in total pixels e.g. width * height. Images * above this value will not be drawn. Use -1 for no limit. * @var {number} */ PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ? -1 : PDFJS.maxImageSize); /** * The url of where the predefined Adobe CMaps are located. Include trailing * slash. * @var {string} */ PDFJS.cMapUrl = (PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl); /** * Specifies if CMaps are binary packed. * @var {boolean} */ PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked; /** * By default fonts are converted to OpenType fonts and loaded via font face * rules. If disabled, the font will be rendered using a built in font renderer * that constructs the glyphs with primitive path commands. * @var {boolean} */ PDFJS.disableFontFace = (PDFJS.disableFontFace === undefined ? false : PDFJS.disableFontFace); /** * Path for image resources, mainly for annotation icons. Include trailing * slash. * @var {string} */ PDFJS.imageResourcesPath = (PDFJS.imageResourcesPath === undefined ? '' : PDFJS.imageResourcesPath); /** * Disable the web worker and run all code on the main thread. This will happen * automatically if the browser doesn't support workers or sending typed arrays * to workers. * @var {boolean} */ PDFJS.disableWorker = (PDFJS.disableWorker === undefined ? false : PDFJS.disableWorker); /** * Path and filename of the worker file. Required when the worker is enabled in * development mode. If unspecified in the production build, the worker will be * loaded based on the location of the pdf.js file. It is recommended that * the workerSrc is set in a custom application to prevent issues caused by * third-party frameworks and libraries. * @var {string} */ PDFJS.workerSrc = (PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc); /** * Disable range request loading of PDF files. When enabled and if the server * supports partial content requests then the PDF will be fetched in chunks. * Enabled (false) by default. * @var {boolean} */ PDFJS.disableRange = (PDFJS.disableRange === undefined ? false : PDFJS.disableRange); /** * Disable streaming of PDF file data. By default PDF.js attempts to load PDF * in chunks. This default behavior can be disabled. * @var {boolean} */ PDFJS.disableStream = (PDFJS.disableStream === undefined ? false : PDFJS.disableStream); /** * Disable pre-fetching of PDF file data. When range requests are enabled PDF.js * will automatically keep fetching more data even if it isn't needed to display * the current page. This default behavior can be disabled. * * NOTE: It is also necessary to disable streaming, see above, * in order for disabling of pre-fetching to work correctly. * @var {boolean} */ PDFJS.disableAutoFetch = (PDFJS.disableAutoFetch === undefined ? false : PDFJS.disableAutoFetch); /** * Enables special hooks for debugging PDF.js. * @var {boolean} */ PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug); /** * Enables transfer usage in postMessage for ArrayBuffers. * @var {boolean} */ PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ? true : PDFJS.postMessageTransfers); /** * Disables URL.createObjectURL usage. * @var {boolean} */ PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ? false : PDFJS.disableCreateObjectURL); /** * Disables WebGL usage. * @var {boolean} */ PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ? true : PDFJS.disableWebGL); /** * Disables fullscreen support, and by extension Presentation Mode, * in browsers which support the fullscreen API. * @var {boolean} */ PDFJS.disableFullscreen = (PDFJS.disableFullscreen === undefined ? false : PDFJS.disableFullscreen); /** * Enables CSS only zooming. * @var {boolean} */ PDFJS.useOnlyCssZoom = (PDFJS.useOnlyCssZoom === undefined ? false : PDFJS.useOnlyCssZoom); /** * Controls the logging level. * The constants from PDFJS.VERBOSITY_LEVELS should be used: * - errors * - warnings [default] * - infos * @var {number} */ PDFJS.verbosity = (PDFJS.verbosity === undefined ? PDFJS.VERBOSITY_LEVELS.warnings : PDFJS.verbosity); /** * The maximum supported canvas size in total pixels e.g. width * height. * The default value is 4096 * 4096. Use -1 for no limit. * @var {number} */ PDFJS.maxCanvasPixels = (PDFJS.maxCanvasPixels === undefined ? 16777216 : PDFJS.maxCanvasPixels); /** * (Deprecated) Opens external links in a new window if enabled. * The default behavior opens external links in the PDF.js window. * * NOTE: This property has been deprecated, please use * `PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK` instead. * @var {boolean} */ PDFJS.openExternalLinksInNewWindow = ( PDFJS.openExternalLinksInNewWindow === undefined ? false : PDFJS.openExternalLinksInNewWindow); /** * Specifies the |target| attribute for external links. * The constants from PDFJS.LinkTarget should be used: * - NONE [default] * - SELF * - BLANK * - PARENT * - TOP * @var {number} */ PDFJS.externalLinkTarget = (PDFJS.externalLinkTarget === undefined ? PDFJS.LinkTarget.NONE : PDFJS.externalLinkTarget); /** * Determines if we can eval strings as JS. Primarily used to improve * performance for font rendering. * @var {boolean} */ PDFJS.isEvalSupported = (PDFJS.isEvalSupported === undefined ? true : PDFJS.isEvalSupported); /** * Document initialization / loading parameters object. * * @typedef {Object} DocumentInitParameters * @property {string} url - The URL of the PDF. * @property {TypedArray|Array|string} data - Binary PDF data. Use typed arrays * (Uint8Array) to improve the memory usage. If PDF data is BASE64-encoded, * use atob() to convert it to a binary string first. * @property {Object} httpHeaders - Basic authentication headers. * @property {boolean} withCredentials - Indicates whether or not cross-site * Access-Control requests should be made using credentials such as cookies * or authorization headers. The default is false. * @property {string} password - For decrypting password-protected PDFs. * @property {TypedArray} initialData - A typed array with the first portion or * all of the pdf data. Used by the extension since some data is already * loaded before the switch to range requests. * @property {number} length - The PDF file length. It's used for progress * reports and range requests operations. * @property {PDFDataRangeTransport} range * @property {number} rangeChunkSize - Optional parameter to specify * maximum number of bytes fetched per range request. The default value is * 2^16 = 65536. * @property {PDFWorker} worker - The worker that will be used for the loading * and parsing of the PDF data. */ /** * @typedef {Object} PDFDocumentStats * @property {Array} streamTypes - Used stream types in the document (an item * is set to true if specific stream ID was used in the document). * @property {Array} fontTypes - Used font type in the document (an item is set * to true if specific font ID was used in the document). */ /** * This is the main entry point for loading a PDF and interacting with it. * NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR) * is used, which means it must follow the same origin rules that any XHR does * e.g. No cross domain requests without CORS. * * @param {string|TypedArray|DocumentInitParameters|PDFDataRangeTransport} src * Can be a url to where a PDF is located, a typed array (Uint8Array) * already populated with data or parameter object. * * @param {PDFDataRangeTransport} pdfDataRangeTransport (deprecated) It is used * if you want to manually serve range requests for data in the PDF. * * @param {function} passwordCallback (deprecated) It is used to request a * password if wrong or no password was provided. The callback receives two * parameters: function that needs to be called with new password and reason * (see {PasswordResponses}). * * @param {function} progressCallback (deprecated) It is used to be able to * monitor the loading progress of the PDF file (necessary to implement e.g. * a loading bar). The callback receives an {Object} with the properties: * {number} loaded and {number} total. * * @return {PDFDocumentLoadingTask} */ PDFJS.getDocument = function getDocument(src, pdfDataRangeTransport, passwordCallback, progressCallback) { var task = new PDFDocumentLoadingTask(); // Support of the obsolete arguments (for compatibility with API v1.0) if (arguments.length > 1) { deprecated('getDocument is called with pdfDataRangeTransport, ' + 'passwordCallback or progressCallback argument'); } if (pdfDataRangeTransport) { if (!(pdfDataRangeTransport instanceof PDFDataRangeTransport)) { // Not a PDFDataRangeTransport instance, trying to add missing properties. pdfDataRangeTransport = Object.create(pdfDataRangeTransport); pdfDataRangeTransport.length = src.length; pdfDataRangeTransport.initialData = src.initialData; if (!pdfDataRangeTransport.abort) { pdfDataRangeTransport.abort = function () {}; } } src = Object.create(src); src.range = pdfDataRangeTransport; } task.onPassword = passwordCallback || null; task.onProgress = progressCallback || null; var source; if (typeof src === 'string') { source = { url: src }; } else if (isArrayBuffer(src)) { source = { data: src }; } else if (src instanceof PDFDataRangeTransport) { source = { range: src }; } else { if (typeof src !== 'object') { error('Invalid parameter in getDocument, need either Uint8Array, ' + 'string or a parameter object'); } if (!src.url && !src.data && !src.range) { error('Invalid parameter object: need either .data, .range or .url'); } source = src; } var params = {}; var rangeTransport = null; var worker = null; for (var key in source) { if (key === 'url' && typeof window !== 'undefined') { // The full path is required in the 'url' field. params[key] = combineUrl(window.location.href, source[key]); continue; } else if (key === 'range') { rangeTransport = source[key]; continue; } else if (key === 'worker') { worker = source[key]; continue; } else if (key === 'data' && !(source[key] instanceof Uint8Array)) { // Converting string or array-like data to Uint8Array. var pdfBytes = source[key]; if (typeof pdfBytes === 'string') { params[key] = stringToBytes(pdfBytes); } else if (typeof pdfBytes === 'object' && pdfBytes !== null && !isNaN(pdfBytes.length)) { params[key] = new Uint8Array(pdfBytes); } else if (isArrayBuffer(pdfBytes)) { params[key] = new Uint8Array(pdfBytes); } else { error('Invalid PDF binary data: either typed array, string or ' + 'array-like object is expected in the data property.'); } continue; } params[key] = source[key]; } params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE; if (!worker) { // Worker was not provided -- creating and owning our own. worker = new PDFWorker(); task._worker = worker; } var docId = task.docId; worker.promise.then(function () { if (task.destroyed) { throw new Error('Loading aborted'); } return _fetchDocument(worker, params, rangeTransport, docId).then( function (workerId) { if (task.destroyed) { throw new Error('Loading aborted'); } var messageHandler = new MessageHandler(docId, workerId, worker.port); messageHandler.send('Ready', null); var transport = new WorkerTransport(messageHandler, task, rangeTransport); task._transport = transport; }); }, task._capability.reject); return task; }; /** * Starts fetching of specified PDF document/data. * @param {PDFWorker} worker * @param {Object} source * @param {PDFDataRangeTransport} pdfDataRangeTransport * @param {string} docId Unique document id, used as MessageHandler id. * @returns {Promise} The promise, which is resolved when worker id of * MessageHandler is known. * @private */ function _fetchDocument(worker, source, pdfDataRangeTransport, docId) { if (worker.destroyed) { return Promise.reject(new Error('Worker was destroyed')); } source.disableAutoFetch = PDFJS.disableAutoFetch; source.disableStream = PDFJS.disableStream; source.chunkedViewerLoading = !!pdfDataRangeTransport; if (pdfDataRangeTransport) { source.length = pdfDataRangeTransport.length; source.initialData = pdfDataRangeTransport.initialData; } return worker.messageHandler.sendWithPromise('GetDocRequest', { docId: docId, source: source, disableRange: PDFJS.disableRange, maxImageSize: PDFJS.maxImageSize, cMapUrl: PDFJS.cMapUrl, cMapPacked: PDFJS.cMapPacked, disableFontFace: PDFJS.disableFontFace, disableCreateObjectURL: PDFJS.disableCreateObjectURL, verbosity: PDFJS.verbosity }).then(function (workerId) { if (worker.destroyed) { throw new Error('Worker was destroyed'); } return workerId; }); } /** * PDF document loading operation. * @class * @alias PDFDocumentLoadingTask */ var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() { var nextDocumentId = 0; /** @constructs PDFDocumentLoadingTask */ function PDFDocumentLoadingTask() { this._capability = createPromiseCapability(); this._transport = null; this._worker = null; /** * Unique document loading task id -- used in MessageHandlers. * @type {string} */ this.docId = 'd' + (nextDocumentId++); /** * Shows if loading task is destroyed. * @type {boolean} */ this.destroyed = false; /** * Callback to request a password if wrong or no password was provided. * The callback receives two parameters: function that needs to be called * with new password and reason (see {PasswordResponses}). */ this.onPassword = null; /** * Callback to be able to monitor the loading progress of the PDF file * (necessary to implement e.g. a loading bar). The callback receives * an {Object} with the properties: {number} loaded and {number} total. */ this.onProgress = null; /** * Callback to when unsupported feature is used. The callback receives * an {PDFJS.UNSUPPORTED_FEATURES} argument. */ this.onUnsupportedFeature = null; } PDFDocumentLoadingTask.prototype = /** @lends PDFDocumentLoadingTask.prototype */ { /** * @return {Promise} */ get promise() { return this._capability.promise; }, /** * Aborts all network requests and destroys worker. * @return {Promise} A promise that is resolved after destruction activity * is completed. */ destroy: function () { this.destroyed = true; var transportDestroyed = !this._transport ? Promise.resolve() : this._transport.destroy(); return transportDestroyed.then(function () { this._transport = null; if (this._worker) { this._worker.destroy(); this._worker = null; } }.bind(this)); }, /** * Registers callbacks to indicate the document loading completion. * * @param {function} onFulfilled The callback for the loading completion. * @param {function} onRejected The callback for the loading failure. * @return {Promise} A promise that is resolved after the onFulfilled or * onRejected callback. */ then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) { return this.promise.then.apply(this.promise, arguments); } }; return PDFDocumentLoadingTask; })(); /** * Abstract class to support range requests file loading. * @class * @alias PDFJS.PDFDataRangeTransport * @param {number} length * @param {Uint8Array} initialData */ var PDFDataRangeTransport = (function pdfDataRangeTransportClosure() { function PDFDataRangeTransport(length, initialData) { this.length = length; this.initialData = initialData; this._rangeListeners = []; this._progressListeners = []; this._progressiveReadListeners = []; this._readyCapability = createPromiseCapability(); } PDFDataRangeTransport.prototype = /** @lends PDFDataRangeTransport.prototype */ { addRangeListener: function PDFDataRangeTransport_addRangeListener(listener) { this._rangeListeners.push(listener); }, addProgressListener: function PDFDataRangeTransport_addProgressListener(listener) { this._progressListeners.push(listener); }, addProgressiveReadListener: function PDFDataRangeTransport_addProgressiveReadListener(listener) { this._progressiveReadListeners.push(listener); }, onDataRange: function PDFDataRangeTransport_onDataRange(begin, chunk) { var listeners = this._rangeListeners; for (var i = 0, n = listeners.length; i < n; ++i) { listeners[i](begin, chunk); } }, onDataProgress: function PDFDataRangeTransport_onDataProgress(loaded) { this._readyCapability.promise.then(function () { var listeners = this._progressListeners; for (var i = 0, n = listeners.length; i < n; ++i) { listeners[i](loaded); } }.bind(this)); }, onDataProgressiveRead: function PDFDataRangeTransport_onDataProgress(chunk) { this._readyCapability.promise.then(function () { var listeners = this._progressiveReadListeners; for (var i = 0, n = listeners.length; i < n; ++i) { listeners[i](chunk); } }.bind(this)); }, transportReady: function PDFDataRangeTransport_transportReady() { this._readyCapability.resolve(); }, requestDataRange: function PDFDataRangeTransport_requestDataRange(begin, end) { throw new Error('Abstract method PDFDataRangeTransport.requestDataRange'); }, abort: function PDFDataRangeTransport_abort() { } }; return PDFDataRangeTransport; })(); PDFJS.PDFDataRangeTransport = PDFDataRangeTransport; /** * Proxy to a PDFDocument in the worker thread. Also, contains commonly used * properties that can be read synchronously. * @class * @alias PDFDocumentProxy */ var PDFDocumentProxy = (function PDFDocumentProxyClosure() { function PDFDocumentProxy(pdfInfo, transport, loadingTask) { this.pdfInfo = pdfInfo; this.transport = transport; this.loadingTask = loadingTask; } PDFDocumentProxy.prototype = /** @lends PDFDocumentProxy.prototype */ { /** * @return {number} Total number of pages the PDF contains. */ get numPages() { return this.pdfInfo.numPages; }, /** * @return {string} A unique ID to identify a PDF. Not guaranteed to be * unique. */ get fingerprint() { return this.pdfInfo.fingerprint; }, /** * @param {number} pageNumber The page number to get. The first page is 1. * @return {Promise} A promise that is resolved with a {@link PDFPageProxy} * object. */ getPage: function PDFDocumentProxy_getPage(pageNumber) { return this.transport.getPage(pageNumber); }, /** * @param {{num: number, gen: number}} ref The page reference. Must have * the 'num' and 'gen' properties. * @return {Promise} A promise that is resolved with the page index that is * associated with the reference. */ getPageIndex: function PDFDocumentProxy_getPageIndex(ref) { return this.transport.getPageIndex(ref); }, /** * @return {Promise} A promise that is resolved with a lookup table for * mapping named destinations to reference numbers. * * This can be slow for large documents: use getDestination instead */ getDestinations: function PDFDocumentProxy_getDestinations() { return this.transport.getDestinations(); }, /** * @param {string} id The named destination to get. * @return {Promise} A promise that is resolved with all information * of the given named destination. */ getDestination: function PDFDocumentProxy_getDestination(id) { return this.transport.getDestination(id); }, /** * @return {Promise} A promise that is resolved with a lookup table for * mapping named attachments to their content. */ getAttachments: function PDFDocumentProxy_getAttachments() { return this.transport.getAttachments(); }, /** * @return {Promise} A promise that is resolved with an array of all the * JavaScript strings in the name tree. */ getJavaScript: function PDFDocumentProxy_getJavaScript() { return this.transport.getJavaScript(); }, /** * @return {Promise} A promise that is resolved with an {Array} that is a * tree outline (if it has one) of the PDF. The tree is in the format of: * [ * { * title: string, * bold: boolean, * italic: boolean, * color: rgb array, * dest: dest obj, * items: array of more items like this * }, * ... * ]. */ getOutline: function PDFDocumentProxy_getOutline() { return this.transport.getOutline(); }, /** * @return {Promise} A promise that is resolved with an {Object} that has * info and metadata properties. Info is an {Object} filled with anything * available in the information dictionary and similarly metadata is a * {Metadata} object with information from the metadata section of the PDF. */ getMetadata: function PDFDocumentProxy_getMetadata() { return this.transport.getMetadata(); }, /** * @return {Promise} A promise that is resolved with a TypedArray that has * the raw data from the PDF. */ getData: function PDFDocumentProxy_getData() { return this.transport.getData(); }, /** * @return {Promise} A promise that is resolved when the document's data * is loaded. It is resolved with an {Object} that contains the length * property that indicates size of the PDF data in bytes. */ getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() { return this.transport.downloadInfoCapability.promise; }, /** * @return {Promise} A promise this is resolved with current stats about * document structures (see {@link PDFDocumentStats}). */ getStats: function PDFDocumentProxy_getStats() { return this.transport.getStats(); }, /** * Cleans up resources allocated by the document, e.g. created @font-face. */ cleanup: function PDFDocumentProxy_cleanup() { this.transport.startCleanup(); }, /** * Destroys current document instance and terminates worker. */ destroy: function PDFDocumentProxy_destroy() { return this.loadingTask.destroy(); } }; return PDFDocumentProxy; })(); /** * Page getTextContent parameters. * * @typedef {Object} getTextContentParameters * @param {boolean} normalizeWhitespace - replaces all occurrences of * whitespace with standard spaces (0x20). The default value is `false`. */ /** * Page text content. * * @typedef {Object} TextContent * @property {array} items - array of {@link TextItem} * @property {Object} styles - {@link TextStyles} objects, indexed by font * name. */ /** * Page text content part. * * @typedef {Object} TextItem * @property {string} str - text content. * @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'. * @property {array} transform - transformation matrix. * @property {number} width - width in device space. * @property {number} height - height in device space. * @property {string} fontName - font name used by pdf.js for converted font. */ /** * Text style. * * @typedef {Object} TextStyle * @property {number} ascent - font ascent. * @property {number} descent - font descent. * @property {boolean} vertical - text is in vertical mode. * @property {string} fontFamily - possible font family */ /** * Page annotation parameters. * * @typedef {Object} GetAnnotationsParameters * @param {string} intent - Determines the annotations that will be fetched, * can be either 'display' (viewable annotations) or 'print' * (printable annotations). * If the parameter is omitted, all annotations are fetched. */ /** * Page render parameters. * * @typedef {Object} RenderParameters * @property {Object} canvasContext - A 2D context of a DOM Canvas object. * @property {PDFJS.PageViewport} viewport - Rendering viewport obtained by * calling of PDFPage.getViewport method. * @property {string} intent - Rendering intent, can be 'display' or 'print' * (default value is 'display'). * @property {Array} transform - (optional) Additional transform, applied * just before viewport transform. * @property {Object} imageLayer - (optional) An object that has beginLayout, * endLayout and appendImage functions. * @property {function} continueCallback - (deprecated) A function that will be * called each time the rendering is paused. To continue * rendering call the function that is the first argument * to the callback. */ /** * PDF page operator list. * * @typedef {Object} PDFOperatorList * @property {Array} fnArray - Array containing the operator functions. * @property {Array} argsArray - Array containing the arguments of the * functions. */ /** * Proxy to a PDFPage in the worker thread. * @class * @alias PDFPageProxy */ var PDFPageProxy = (function PDFPageProxyClosure() { function PDFPageProxy(pageIndex, pageInfo, transport) { this.pageIndex = pageIndex; this.pageInfo = pageInfo; this.transport = transport; this.stats = new StatTimer(); this.stats.enabled = !!globalScope.PDFJS.enableStats; this.commonObjs = transport.commonObjs; this.objs = new PDFObjects(); this.cleanupAfterRender = false; this.pendingCleanup = false; this.intentStates = {}; this.destroyed = false; } PDFPageProxy.prototype = /** @lends PDFPageProxy.prototype */ { /** * @return {number} Page number of the page. First page is 1. */ get pageNumber() { return this.pageIndex + 1; }, /** * @return {number} The number of degrees the page is rotated clockwise. */ get rotate() { return this.pageInfo.rotate; }, /** * @return {Object} The reference that points to this page. It has 'num' and * 'gen' properties. */ get ref() { return this.pageInfo.ref; }, /** * @return {Array} An array of the visible portion of the PDF page in the * user space units - [x1, y1, x2, y2]. */ get view() { return this.pageInfo.view; }, /** * @param {number} scale The desired scale of the viewport. * @param {number} rotate Degrees to rotate the viewport. If omitted this * defaults to the page rotation. * @return {PDFJS.PageViewport} Contains 'width' and 'height' properties * along with transforms required for rendering. */ getViewport: function PDFPageProxy_getViewport(scale, rotate) { if (arguments.length < 2) { rotate = this.rotate; } return new PDFJS.PageViewport(this.view, scale, rotate, 0, 0); }, /** * @param {GetAnnotationsParameters} params - Annotation parameters. * @return {Promise} A promise that is resolved with an {Array} of the * annotation objects. */ getAnnotations: function PDFPageProxy_getAnnotations(params) { var intent = (params && params.intent) || null; if (!this.annotationsPromise || this.annotationsIntent !== intent) { this.annotationsPromise = this.transport.getAnnotations(this.pageIndex, intent); this.annotationsIntent = intent; } return this.annotationsPromise; }, /** * Begins the process of rendering a page to the desired context. * @param {RenderParameters} params Page render parameters. * @return {RenderTask} An object that contains the promise, which * is resolved when the page finishes rendering. */ render: function PDFPageProxy_render(params) { var stats = this.stats; stats.time('Overall'); // If there was a pending destroy cancel it so no cleanup happens during // this call to render. this.pendingCleanup = false; var renderingIntent = (params.intent === 'print' ? 'print' : 'display'); if (!this.intentStates[renderingIntent]) { this.intentStates[renderingIntent] = {}; } var intentState = this.intentStates[renderingIntent]; // If there's no displayReadyCapability yet, then the operatorList // was never requested before. Make the request and create the promise. if (!intentState.displayReadyCapability) { intentState.receivingOperatorList = true; intentState.displayReadyCapability = createPromiseCapability(); intentState.operatorList = { fnArray: [], argsArray: [], lastChunk: false }; this.stats.time('Page Request'); this.transport.messageHandler.send('RenderPageRequest', { pageIndex: this.pageNumber - 1, intent: renderingIntent }); } var internalRenderTask = new InternalRenderTask(complete, params, this.objs, this.commonObjs, intentState.operatorList, this.pageNumber); internalRenderTask.useRequestAnimationFrame = renderingIntent !== 'print'; if (!intentState.renderTasks) { intentState.renderTasks = []; } intentState.renderTasks.push(internalRenderTask); var renderTask = internalRenderTask.task; // Obsolete parameter support if (params.continueCallback) { deprecated('render is used with continueCallback parameter'); renderTask.onContinue = params.continueCallback; } var self = this; intentState.displayReadyCapability.promise.then( function pageDisplayReadyPromise(transparency) { if (self.pendingCleanup) { complete(); return; } stats.time('Rendering'); internalRenderTask.initalizeGraphics(transparency); internalRenderTask.operatorListChanged(); }, function pageDisplayReadPromiseError(reason) { complete(reason); } ); function complete(error) { var i = intentState.renderTasks.indexOf(internalRenderTask); if (i >= 0) { intentState.renderTasks.splice(i, 1); } if (self.cleanupAfterRender) { self.pendingCleanup = true; } self._tryCleanup(); if (error) { internalRenderTask.capability.reject(error); } else { internalRenderTask.capability.resolve(); } stats.timeEnd('Rendering'); stats.timeEnd('Overall'); } return renderTask; }, /** * @return {Promise} A promise resolved with an {@link PDFOperatorList} * object that represents page's operator list. */ getOperatorList: function PDFPageProxy_getOperatorList() { function operatorListChanged() { if (intentState.operatorList.lastChunk) { intentState.opListReadCapability.resolve(intentState.operatorList); } } var renderingIntent = 'oplist'; if (!this.intentStates[renderingIntent]) { this.intentStates[renderingIntent] = {}; } var intentState = this.intentStates[renderingIntent]; if (!intentState.opListReadCapability) { var opListTask = {}; opListTask.operatorListChanged = operatorListChanged; intentState.receivingOperatorList = true; intentState.opListReadCapability = createPromiseCapability(); intentState.renderTasks = []; intentState.renderTasks.push(opListTask); intentState.operatorList = { fnArray: [], argsArray: [], lastChunk: false }; this.transport.messageHandler.send('RenderPageRequest', { pageIndex: this.pageIndex, intent: renderingIntent }); } return intentState.opListReadCapability.promise; }, /** * @param {getTextContentParameters} params - getTextContent parameters. * @return {Promise} That is resolved a {@link TextContent} * object that represent the page text content. */ getTextContent: function PDFPageProxy_getTextContent(params) { var normalizeWhitespace = (params && params.normalizeWhitespace) || false; return this.transport.messageHandler.sendWithPromise('GetTextContent', { pageIndex: this.pageNumber - 1, normalizeWhitespace: normalizeWhitespace, }); }, /** * Destroys page object. */ _destroy: function PDFPageProxy_destroy() { this.destroyed = true; this.transport.pageCache[this.pageIndex] = null; var waitOn = []; Object.keys(this.intentStates).forEach(function(intent) { var intentState = this.intentStates[intent]; intentState.renderTasks.forEach(function(renderTask) { var renderCompleted = renderTask.capability.promise. catch(function () {}); // ignoring failures waitOn.push(renderCompleted); renderTask.cancel(); }); }, this); this.objs.clear(); this.annotationsPromise = null; this.pendingCleanup = false; return Promise.all(waitOn); }, /** * Cleans up resources allocated by the page. (deprecated) */ destroy: function() { deprecated('page destroy method, use cleanup() instead'); this.cleanup(); }, /** * Cleans up resources allocated by the page. */ cleanup: function PDFPageProxy_cleanup() { this.pendingCleanup = true; this._tryCleanup(); }, /** * For internal use only. Attempts to clean up if rendering is in a state * where that's possible. * @ignore */ _tryCleanup: function PDFPageProxy_tryCleanup() { if (!this.pendingCleanup || Object.keys(this.intentStates).some(function(intent) { var intentState = this.intentStates[intent]; return (intentState.renderTasks.length !== 0 || intentState.receivingOperatorList); }, this)) { return; } Object.keys(this.intentStates).forEach(function(intent) { delete this.intentStates[intent]; }, this); this.objs.clear(); this.annotationsPromise = null; this.pendingCleanup = false; }, /** * For internal use only. * @ignore */ _startRenderPage: function PDFPageProxy_startRenderPage(transparency, intent) { var intentState = this.intentStates[intent]; // TODO Refactor RenderPageRequest to separate rendering // and operator list logic if (intentState.displayReadyCapability) { intentState.displayReadyCapability.resolve(transparency); } }, /** * For internal use only. * @ignore */ _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk, intent) { var intentState = this.intentStates[intent]; var i, ii; // Add the new chunk to the current operator list. for (i = 0, ii = operatorListChunk.length; i < ii; i++) { intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]); intentState.operatorList.argsArray.push( operatorListChunk.argsArray[i]); } intentState.operatorList.lastChunk = operatorListChunk.lastChunk; // Notify all the rendering tasks there are more operators to be consumed. for (i = 0; i < intentState.renderTasks.length; i++) { intentState.renderTasks[i].operatorListChanged(); } if (operatorListChunk.lastChunk) { intentState.receivingOperatorList = false; this._tryCleanup(); } } }; return PDFPageProxy; })(); /** * PDF.js web worker abstraction, it controls instantiation of PDF documents and * WorkerTransport for them. If creation of a web worker is not possible, * a "fake" worker will be used instead. * @class */ var PDFWorker = (function PDFWorkerClosure() { var nextFakeWorkerId = 0; // Loads worker code into main thread. function setupFakeWorkerGlobal() { if (!PDFJS.fakeWorkerFilesLoadedCapability) { PDFJS.fakeWorkerFilesLoadedCapability = createPromiseCapability(); // In the developer build load worker_loader which in turn loads all the // other files and resolves the promise. In production only the // pdf.worker.js file is needed. Util.loadScript(PDFJS.workerSrc, function() { PDFJS.fakeWorkerFilesLoadedCapability.resolve(); }); } return PDFJS.fakeWorkerFilesLoadedCapability.promise; } function PDFWorker(name) { this.name = name; this.destroyed = false; this._readyCapability = createPromiseCapability(); this._port = null; this._webWorker = null; this._messageHandler = null; this._initialize(); } PDFWorker.prototype = /** @lends PDFWorker.prototype */ { get promise() { return this._readyCapability.promise; }, get port() { return this._port; }, get messageHandler() { return this._messageHandler; }, _initialize: function PDFWorker_initialize() { // If worker support isn't disabled explicit and the browser has worker // support, create a new web worker and test if it/the browser fullfills // all requirements to run parts of pdf.js in a web worker. // Right now, the requirement is, that an Uint8Array is still an // Uint8Array as it arrives on the worker. (Chrome added this with v.15.) if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') { var workerSrc = PDFJS.workerSrc; if (!workerSrc) { error('No PDFJS.workerSrc specified'); } try { // Some versions of FF can't create a worker on localhost, see: // https://bugzilla.mozilla.org/show_bug.cgi?id=683280 var worker = new Worker(workerSrc); var messageHandler = new MessageHandler('main', 'worker', worker); messageHandler.on('test', function PDFWorker_test(data) { if (this.destroyed) { this._readyCapability.reject(new Error('Worker was destroyed')); messageHandler.destroy(); worker.terminate(); return; // worker was destroyed } var supportTypedArray = data && data.supportTypedArray; if (supportTypedArray) { this._messageHandler = messageHandler; this._port = worker; this._webWorker = worker; if (!data.supportTransfers) { PDFJS.postMessageTransfers = false; } this._readyCapability.resolve(); } else { this._setupFakeWorker(); messageHandler.destroy(); worker.terminate(); } }.bind(this)); messageHandler.on('console_log', function (data) { console.log.apply(console, data); }); messageHandler.on('console_error', function (data) { console.error.apply(console, data); }); var testObj = new Uint8Array([PDFJS.postMessageTransfers ? 255 : 0]); // Some versions of Opera throw a DATA_CLONE_ERR on serializing the // typed array. Also, checking if we can use transfers. try { messageHandler.send('test', testObj, [testObj.buffer]); } catch (ex) { info('Cannot use postMessage transfers'); testObj[0] = 0; messageHandler.send('test', testObj); } return; } catch (e) { info('The worker has been disabled.'); } } // Either workers are disabled, not supported or have thrown an exception. // Thus, we fallback to a faked worker. this._setupFakeWorker(); }, _setupFakeWorker: function PDFWorker_setupFakeWorker() { warn('Setting up fake worker.'); globalScope.PDFJS.disableWorker = true; setupFakeWorkerGlobal().then(function () { if (this.destroyed) { this._readyCapability.reject(new Error('Worker was destroyed')); return; } // If we don't use a worker, just post/sendMessage to the main thread. var port = { _listeners: [], postMessage: function (obj) { var e = {data: obj}; this._listeners.forEach(function (listener) { listener.call(this, e); }, this); }, addEventListener: function (name, listener) { this._listeners.push(listener); }, removeEventListener: function (name, listener) { var i = this._listeners.indexOf(listener); this._listeners.splice(i, 1); }, terminate: function () {} }; this._port = port; // All fake workers use the same port, making id unique. var id = 'fake' + (nextFakeWorkerId++); // If the main thread is our worker, setup the handling for the // messages -- the main thread sends to it self. var workerHandler = new MessageHandler(id + '_worker', id, port); PDFJS.WorkerMessageHandler.setup(workerHandler, port); var messageHandler = new MessageHandler(id, id + '_worker', port); this._messageHandler = messageHandler; this._readyCapability.resolve(); }.bind(this)); }, /** * Destroys the worker instance. */ destroy: function PDFWorker_destroy() { this.destroyed = true; if (this._webWorker) { // We need to terminate only web worker created resource. this._webWorker.terminate(); this._webWorker = null; } this._port = null; if (this._messageHandler) { this._messageHandler.destroy(); this._messageHandler = null; } } }; return PDFWorker; })(); PDFJS.PDFWorker = PDFWorker; /** * For internal use only. * @ignore */ var WorkerTransport = (function WorkerTransportClosure() { function WorkerTransport(messageHandler, loadingTask, pdfDataRangeTransport) { this.messageHandler = messageHandler; this.loadingTask = loadingTask; this.pdfDataRangeTransport = pdfDataRangeTransport; this.commonObjs = new PDFObjects(); this.fontLoader = new FontLoader(loadingTask.docId); this.destroyed = false; this.destroyCapability = null; this.pageCache = []; this.pagePromises = []; this.downloadInfoCapability = createPromiseCapability(); this.setupMessageHandler(); } WorkerTransport.prototype = { destroy: function WorkerTransport_destroy() { if (this.destroyCapability) { return this.destroyCapability.promise; } this.destroyed = true; this.destroyCapability = createPromiseCapability(); var waitOn = []; // We need to wait for all renderings to be completed, e.g. // timeout/rAF can take a long time. this.pageCache.forEach(function (page) { if (page) { waitOn.push(page._destroy()); } }); this.pageCache = []; this.pagePromises = []; var self = this; // We also need to wait for the worker to finish its long running tasks. var terminated = this.messageHandler.sendWithPromise('Terminate', null); waitOn.push(terminated); Promise.all(waitOn).then(function () { self.fontLoader.clear(); if (self.pdfDataRangeTransport) { self.pdfDataRangeTransport.abort(); self.pdfDataRangeTransport = null; } if (self.messageHandler) { self.messageHandler.destroy(); self.messageHandler = null; } self.destroyCapability.resolve(); }, this.destroyCapability.reject); return this.destroyCapability.promise; }, setupMessageHandler: function WorkerTransport_setupMessageHandler() { var messageHandler = this.messageHandler; function updatePassword(password) { messageHandler.send('UpdatePassword', password); } var pdfDataRangeTransport = this.pdfDataRangeTransport; if (pdfDataRangeTransport) { pdfDataRangeTransport.addRangeListener(function(begin, chunk) { messageHandler.send('OnDataRange', { begin: begin, chunk: chunk }); }); pdfDataRangeTransport.addProgressListener(function(loaded) { messageHandler.send('OnDataProgress', { loaded: loaded }); }); pdfDataRangeTransport.addProgressiveReadListener(function(chunk) { messageHandler.send('OnDataRange', { chunk: chunk }); }); messageHandler.on('RequestDataRange', function transportDataRange(data) { pdfDataRangeTransport.requestDataRange(data.begin, data.end); }, this); } messageHandler.on('GetDoc', function transportDoc(data) { var pdfInfo = data.pdfInfo; this.numPages = data.pdfInfo.numPages; var loadingTask = this.loadingTask; var pdfDocument = new PDFDocumentProxy(pdfInfo, this, loadingTask); this.pdfDocument = pdfDocument; loadingTask._capability.resolve(pdfDocument); }, this); messageHandler.on('NeedPassword', function transportNeedPassword(exception) { var loadingTask = this.loadingTask; if (loadingTask.onPassword) { return loadingTask.onPassword(updatePassword, PasswordResponses.NEED_PASSWORD); } loadingTask._capability.reject( new PasswordException(exception.message, exception.code)); }, this); messageHandler.on('IncorrectPassword', function transportIncorrectPassword(exception) { var loadingTask = this.loadingTask; if (loadingTask.onPassword) { return loadingTask.onPassword(updatePassword, PasswordResponses.INCORRECT_PASSWORD); } loadingTask._capability.reject( new PasswordException(exception.message, exception.code)); }, this); messageHandler.on('InvalidPDF', function transportInvalidPDF(exception) { this.loadingTask._capability.reject( new InvalidPDFException(exception.message)); }, this); messageHandler.on('MissingPDF', function transportMissingPDF(exception) { this.loadingTask._capability.reject( new MissingPDFException(exception.message)); }, this); messageHandler.on('UnexpectedResponse', function transportUnexpectedResponse(exception) { this.loadingTask._capability.reject( new UnexpectedResponseException(exception.message, exception.status)); }, this); messageHandler.on('UnknownError', function transportUnknownError(exception) { this.loadingTask._capability.reject( new UnknownErrorException(exception.message, exception.details)); }, this); messageHandler.on('DataLoaded', function transportPage(data) { this.downloadInfoCapability.resolve(data); }, this); messageHandler.on('PDFManagerReady', function transportPage(data) { if (this.pdfDataRangeTransport) { this.pdfDataRangeTransport.transportReady(); } }, this); messageHandler.on('StartRenderPage', function transportRender(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var page = this.pageCache[data.pageIndex]; page.stats.timeEnd('Page Request'); page._startRenderPage(data.transparency, data.intent); }, this); messageHandler.on('RenderPageChunk', function transportRender(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var page = this.pageCache[data.pageIndex]; page._renderPageChunk(data.operatorList, data.intent); }, this); messageHandler.on('commonobj', function transportObj(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var id = data[0]; var type = data[1]; if (this.commonObjs.hasData(id)) { return; } switch (type) { case 'Font': var exportedData = data[2]; var font; if ('error' in exportedData) { var error = exportedData.error; warn('Error during font loading: ' + error); this.commonObjs.resolve(id, error); break; } else { font = new FontFaceObject(exportedData); } this.fontLoader.bind( [font], function fontReady(fontObjs) { this.commonObjs.resolve(id, font); }.bind(this) ); break; case 'FontPath': this.commonObjs.resolve(id, data[2]); break; default: error('Got unknown common object type ' + type); } }, this); messageHandler.on('obj', function transportObj(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var id = data[0]; var pageIndex = data[1]; var type = data[2]; var pageProxy = this.pageCache[pageIndex]; var imageData; if (pageProxy.objs.hasData(id)) { return; } switch (type) { case 'JpegStream': imageData = data[3]; loadJpegStream(id, imageData, pageProxy.objs); break; case 'Image': imageData = data[3]; pageProxy.objs.resolve(id, imageData); // heuristics that will allow not to store large data var MAX_IMAGE_SIZE_TO_STORE = 8000000; if (imageData && 'data' in imageData && imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) { pageProxy.cleanupAfterRender = true; } break; default: error('Got unknown object type ' + type); } }, this); messageHandler.on('DocProgress', function transportDocProgress(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var loadingTask = this.loadingTask; if (loadingTask.onProgress) { loadingTask.onProgress({ loaded: data.loaded, total: data.total }); } }, this); messageHandler.on('PageError', function transportError(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var page = this.pageCache[data.pageNum - 1]; var intentState = page.intentStates[data.intent]; if (intentState.displayReadyCapability) { intentState.displayReadyCapability.reject(data.error); } else { error(data.error); } }, this); messageHandler.on('UnsupportedFeature', function transportUnsupportedFeature(data) { if (this.destroyed) { return; // Ignore any pending requests if the worker was terminated. } var featureId = data.featureId; var loadingTask = this.loadingTask; if (loadingTask.onUnsupportedFeature) { loadingTask.onUnsupportedFeature(featureId); } PDFJS.UnsupportedManager.notify(featureId); }, this); messageHandler.on('JpegDecode', function(data) { if (this.destroyed) { return Promise.reject('Worker was terminated'); } var imageUrl = data[0]; var components = data[1]; if (components !== 3 && components !== 1) { return Promise.reject( new Error('Only 3 components or 1 component can be returned')); } return new Promise(function (resolve, reject) { var img = new Image(); img.onload = function () { var width = img.width; var height = img.height; var size = width * height; var rgbaLength = size * 4; var buf = new Uint8Array(size * components); var tmpCanvas = createScratchCanvas(width, height); var tmpCtx = tmpCanvas.getContext('2d'); tmpCtx.drawImage(img, 0, 0); var data = tmpCtx.getImageData(0, 0, width, height).data; var i, j; if (components === 3) { for (i = 0, j = 0; i < rgbaLength; i += 4, j += 3) { buf[j] = data[i]; buf[j + 1] = data[i + 1]; buf[j + 2] = data[i + 2]; } } else if (components === 1) { for (i = 0, j = 0; i < rgbaLength; i += 4, j++) { buf[j] = data[i]; } } resolve({ data: buf, width: width, height: height}); }; img.onerror = function () { reject(new Error('JpegDecode failed to load image')); }; img.src = imageUrl; }); }, this); }, getData: function WorkerTransport_getData() { return this.messageHandler.sendWithPromise('GetData', null); }, getPage: function WorkerTransport_getPage(pageNumber, capability) { if (pageNumber <= 0 || pageNumber > this.numPages || (pageNumber|0) !== pageNumber) { return Promise.reject(new Error('Invalid page request')); } var pageIndex = pageNumber - 1; if (pageIndex in this.pagePromises) { return this.pagePromises[pageIndex]; } var promise = this.messageHandler.sendWithPromise('GetPage', { pageIndex: pageIndex }).then(function (pageInfo) { if (this.destroyed) { throw new Error('Transport destroyed'); } var page = new PDFPageProxy(pageIndex, pageInfo, this); this.pageCache[pageIndex] = page; return page; }.bind(this)); this.pagePromises[pageIndex] = promise; return promise; }, getPageIndex: function WorkerTransport_getPageIndexByRef(ref) { return this.messageHandler.sendWithPromise('GetPageIndex', { ref: ref }); }, getAnnotations: function WorkerTransport_getAnnotations(pageIndex, intent) { return this.messageHandler.sendWithPromise('GetAnnotations', { pageIndex: pageIndex, intent: intent, }); }, getDestinations: function WorkerTransport_getDestinations() { return this.messageHandler.sendWithPromise('GetDestinations', null); }, getDestination: function WorkerTransport_getDestination(id) { return this.messageHandler.sendWithPromise('GetDestination', { id: id }); }, getAttachments: function WorkerTransport_getAttachments() { return this.messageHandler.sendWithPromise('GetAttachments', null); }, getJavaScript: function WorkerTransport_getJavaScript() { return this.messageHandler.sendWithPromise('GetJavaScript', null); }, getOutline: function WorkerTransport_getOutline() { return this.messageHandler.sendWithPromise('GetOutline', null); }, getMetadata: function WorkerTransport_getMetadata() { return this.messageHandler.sendWithPromise('GetMetadata', null). then(function transportMetadata(results) { return { info: results[0], metadata: (results[1] ? new PDFJS.Metadata(results[1]) : null) }; }); }, getStats: function WorkerTransport_getStats() { return this.messageHandler.sendWithPromise('GetStats', null); }, startCleanup: function WorkerTransport_startCleanup() { this.messageHandler.sendWithPromise('Cleanup', null). then(function endCleanup() { for (var i = 0, ii = this.pageCache.length; i < ii; i++) { var page = this.pageCache[i]; if (page) { page.cleanup(); } } this.commonObjs.clear(); this.fontLoader.clear(); }.bind(this)); } }; return WorkerTransport; })(); /** * A PDF document and page is built of many objects. E.g. there are objects * for fonts, images, rendering code and such. These objects might get processed * inside of a worker. The `PDFObjects` implements some basic functions to * manage these objects. * @ignore */ var PDFObjects = (function PDFObjectsClosure() { function PDFObjects() { this.objs = {}; } PDFObjects.prototype = { /** * Internal function. * Ensures there is an object defined for `objId`. */ ensureObj: function PDFObjects_ensureObj(objId) { if (this.objs[objId]) { return this.objs[objId]; } var obj = { capability: createPromiseCapability(), data: null, resolved: false }; this.objs[objId] = obj; return obj; }, /** * If called *without* callback, this returns the data of `objId` but the * object needs to be resolved. If it isn't, this function throws. * * If called *with* a callback, the callback is called with the data of the * object once the object is resolved. That means, if you call this * function and the object is already resolved, the callback gets called * right away. */ get: function PDFObjects_get(objId, callback) { // If there is a callback, then the get can be async and the object is // not required to be resolved right now if (callback) { this.ensureObj(objId).capability.promise.then(callback); return null; } // If there isn't a callback, the user expects to get the resolved data // directly. var obj = this.objs[objId]; // If there isn't an object yet or the object isn't resolved, then the // data isn't ready yet! if (!obj || !obj.resolved) { error('Requesting object that isn\'t resolved yet ' + objId); } return obj.data; }, /** * Resolves the object `objId` with optional `data`. */ resolve: function PDFObjects_resolve(objId, data) { var obj = this.ensureObj(objId); obj.resolved = true; obj.data = data; obj.capability.resolve(data); }, isResolved: function PDFObjects_isResolved(objId) { var objs = this.objs; if (!objs[objId]) { return false; } else { return objs[objId].resolved; } }, hasData: function PDFObjects_hasData(objId) { return this.isResolved(objId); }, /** * Returns the data of `objId` if object exists, null otherwise. */ getData: function PDFObjects_getData(objId) { var objs = this.objs; if (!objs[objId] || !objs[objId].resolved) { return null; } else { return objs[objId].data; } }, clear: function PDFObjects_clear() { this.objs = {}; } }; return PDFObjects; })(); /** * Allows controlling of the rendering tasks. * @class * @alias RenderTask */ var RenderTask = (function RenderTaskClosure() { function RenderTask(internalRenderTask) { this._internalRenderTask = internalRenderTask; /** * Callback for incremental rendering -- a function that will be called * each time the rendering is paused. To continue rendering call the * function that is the first argument to the callback. * @type {function} */ this.onContinue = null; } RenderTask.prototype = /** @lends RenderTask.prototype */ { /** * Promise for rendering task completion. * @return {Promise} */ get promise() { return this._internalRenderTask.capability.promise; }, /** * Cancels the rendering task. If the task is currently rendering it will * not be cancelled until graphics pauses with a timeout. The promise that * this object extends will resolved when cancelled. */ cancel: function RenderTask_cancel() { this._internalRenderTask.cancel(); }, /** * Registers callbacks to indicate the rendering task completion. * * @param {function} onFulfilled The callback for the rendering completion. * @param {function} onRejected The callback for the rendering failure. * @return {Promise} A promise that is resolved after the onFulfilled or * onRejected callback. */ then: function RenderTask_then(onFulfilled, onRejected) { return this.promise.then.apply(this.promise, arguments); } }; return RenderTask; })(); /** * For internal use only. * @ignore */ var InternalRenderTask = (function InternalRenderTaskClosure() { function InternalRenderTask(callback, params, objs, commonObjs, operatorList, pageNumber) { this.callback = callback; this.params = params; this.objs = objs; this.commonObjs = commonObjs; this.operatorListIdx = null; this.operatorList = operatorList; this.pageNumber = pageNumber; this.running = false; this.graphicsReadyCallback = null; this.graphicsReady = false; this.useRequestAnimationFrame = false; this.cancelled = false; this.capability = createPromiseCapability(); this.task = new RenderTask(this); // caching this-bound methods this._continueBound = this._continue.bind(this); this._scheduleNextBound = this._scheduleNext.bind(this); this._nextBound = this._next.bind(this); } InternalRenderTask.prototype = { initalizeGraphics: function InternalRenderTask_initalizeGraphics(transparency) { if (this.cancelled) { return; } if (PDFJS.pdfBug && 'StepperManager' in globalScope && globalScope.StepperManager.enabled) { this.stepper = globalScope.StepperManager.create(this.pageNumber - 1); this.stepper.init(this.operatorList); this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint(); } var params = this.params; this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs, this.objs, params.imageLayer); this.gfx.beginDrawing(params.transform, params.viewport, transparency); this.operatorListIdx = 0; this.graphicsReady = true; if (this.graphicsReadyCallback) { this.graphicsReadyCallback(); } }, cancel: function InternalRenderTask_cancel() { this.running = false; this.cancelled = true; this.callback('cancelled'); }, operatorListChanged: function InternalRenderTask_operatorListChanged() { if (!this.graphicsReady) { if (!this.graphicsReadyCallback) { this.graphicsReadyCallback = this._continueBound; } return; } if (this.stepper) { this.stepper.updateOperatorList(this.operatorList); } if (this.running) { return; } this._continue(); }, _continue: function InternalRenderTask__continue() { this.running = true; if (this.cancelled) { return; } if (this.task.onContinue) { this.task.onContinue.call(this.task, this._scheduleNextBound); } else { this._scheduleNext(); } }, _scheduleNext: function InternalRenderTask__scheduleNext() { if (this.useRequestAnimationFrame) { window.requestAnimationFrame(this._nextBound); } else { Promise.resolve(undefined).then(this._nextBound); } }, _next: function InternalRenderTask__next() { if (this.cancelled) { return; } this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList, this.operatorListIdx, this._continueBound, this.stepper); if (this.operatorListIdx === this.operatorList.argsArray.length) { this.running = false; if (this.operatorList.lastChunk) { this.gfx.endDrawing(); this.callback(); } } } }; return InternalRenderTask; })(); /** * (Deprecated) Global observer of unsupported feature usages. Use * onUnsupportedFeature callback of the {PDFDocumentLoadingTask} instance. */ PDFJS.UnsupportedManager = (function UnsupportedManagerClosure() { var listeners = []; return { listen: function (cb) { deprecated('Global UnsupportedManager.listen is used: ' + ' use PDFDocumentLoadingTask.onUnsupportedFeature instead'); listeners.push(cb); }, notify: function (featureId) { for (var i = 0, ii = listeners.length; i < ii; i++) { listeners[i](featureId); } } }; })(); var Metadata = PDFJS.Metadata = (function MetadataClosure() { function fixMetadata(meta) { return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) { var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g, function(code, d1, d2, d3) { return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1); }); var chars = ''; for (var i = 0; i < bytes.length; i += 2) { var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1); chars += code >= 32 && code < 127 && code !== 60 && code !== 62 && code !== 38 && false ? String.fromCharCode(code) : '&#x' + (0x10000 + code).toString(16).substring(1) + ';'; } return '>' + chars; }); } function Metadata(meta) { if (typeof meta === 'string') { // Ghostscript produces invalid metadata meta = fixMetadata(meta); var parser = new DOMParser(); meta = parser.parseFromString(meta, 'application/xml'); } else if (!(meta instanceof Document)) { error('Metadata: Invalid metadata object'); } this.metaDocument = meta; this.metadata = {}; this.parse(); } Metadata.prototype = { parse: function Metadata_parse() { var doc = this.metaDocument; var rdf = doc.documentElement; if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in <xmpmeta> rdf = rdf.firstChild; while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf') { rdf = rdf.nextSibling; } } var nodeName = (rdf) ? rdf.nodeName.toLowerCase() : null; if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes()) { return; } var children = rdf.childNodes, desc, entry, name, i, ii, length, iLength; for (i = 0, length = children.length; i < length; i++) { desc = children[i]; if (desc.nodeName.toLowerCase() !== 'rdf:description') { continue; } for (ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) { if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text') { entry = desc.childNodes[ii]; name = entry.nodeName.toLowerCase(); this.metadata[name] = entry.textContent.trim(); } } } }, get: function Metadata_get(name) { return this.metadata[name] || null; }, has: function Metadata_has(name) { return typeof this.metadata[name] !== 'undefined'; } }; return Metadata; })(); // <canvas> contexts store most of the state we need natively. // However, PDF needs a bit more state, which we store here. // Minimal font size that would be used during canvas fillText operations. var MIN_FONT_SIZE = 16; // Maximum font size that would be used during canvas fillText operations. var MAX_FONT_SIZE = 100; var MAX_GROUP_SIZE = 4096; // Heuristic value used when enforcing minimum line widths. var MIN_WIDTH_FACTOR = 0.65; var COMPILE_TYPE3_GLYPHS = true; var MAX_SIZE_TO_COMPILE = 1000; var FULL_CHUNK_HEIGHT = 16; function createScratchCanvas(width, height) { var canvas = document.createElement('canvas'); canvas.width = width; canvas.height = height; return canvas; } function addContextCurrentTransform(ctx) { // If the context doesn't expose a `mozCurrentTransform`, add a JS based one. if (!ctx.mozCurrentTransform) { ctx._originalSave = ctx.save; ctx._originalRestore = ctx.restore; ctx._originalRotate = ctx.rotate; ctx._originalScale = ctx.scale; ctx._originalTranslate = ctx.translate; ctx._originalTransform = ctx.transform; ctx._originalSetTransform = ctx.setTransform; ctx._transformMatrix = ctx._transformMatrix || [1, 0, 0, 1, 0, 0]; ctx._transformStack = []; Object.defineProperty(ctx, 'mozCurrentTransform', { get: function getCurrentTransform() { return this._transformMatrix; } }); Object.defineProperty(ctx, 'mozCurrentTransformInverse', { get: function getCurrentTransformInverse() { // Calculation done using WolframAlpha: // http://www.wolframalpha.com/input/? // i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}} var m = this._transformMatrix; var a = m[0], b = m[1], c = m[2], d = m[3], e = m[4], f = m[5]; var ad_bc = a * d - b * c; var bc_ad = b * c - a * d; return [ d / ad_bc, b / bc_ad, c / bc_ad, a / ad_bc, (d * e - c * f) / bc_ad, (b * e - a * f) / ad_bc ]; } }); ctx.save = function ctxSave() { var old = this._transformMatrix; this._transformStack.push(old); this._transformMatrix = old.slice(0, 6); this._originalSave(); }; ctx.restore = function ctxRestore() { var prev = this._transformStack.pop(); if (prev) { this._transformMatrix = prev; this._originalRestore(); } }; ctx.translate = function ctxTranslate(x, y) { var m = this._transformMatrix; m[4] = m[0] * x + m[2] * y + m[4]; m[5] = m[1] * x + m[3] * y + m[5]; this._originalTranslate(x, y); }; ctx.scale = function ctxScale(x, y) { var m = this._transformMatrix; m[0] = m[0] * x; m[1] = m[1] * x; m[2] = m[2] * y; m[3] = m[3] * y; this._originalScale(x, y); }; ctx.transform = function ctxTransform(a, b, c, d, e, f) { var m = this._transformMatrix; this._transformMatrix = [ m[0] * a + m[2] * b, m[1] * a + m[3] * b, m[0] * c + m[2] * d, m[1] * c + m[3] * d, m[0] * e + m[2] * f + m[4], m[1] * e + m[3] * f + m[5] ]; ctx._originalTransform(a, b, c, d, e, f); }; ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) { this._transformMatrix = [a, b, c, d, e, f]; ctx._originalSetTransform(a, b, c, d, e, f); }; ctx.rotate = function ctxRotate(angle) { var cosValue = Math.cos(angle); var sinValue = Math.sin(angle); var m = this._transformMatrix; this._transformMatrix = [ m[0] * cosValue + m[2] * sinValue, m[1] * cosValue + m[3] * sinValue, m[0] * (-sinValue) + m[2] * cosValue, m[1] * (-sinValue) + m[3] * cosValue, m[4], m[5] ]; this._originalRotate(angle); }; } } var CachedCanvases = (function CachedCanvasesClosure() { function CachedCanvases() { this.cache = Object.create(null); } CachedCanvases.prototype = { getCanvas: function CachedCanvases_getCanvas(id, width, height, trackTransform) { var canvasEntry; if (this.cache[id] !== undefined) { canvasEntry = this.cache[id]; canvasEntry.canvas.width = width; canvasEntry.canvas.height = height; // reset canvas transform for emulated mozCurrentTransform, if needed canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0); } else { var canvas = createScratchCanvas(width, height); var ctx = canvas.getContext('2d'); if (trackTransform) { addContextCurrentTransform(ctx); } this.cache[id] = canvasEntry = {canvas: canvas, context: ctx}; } return canvasEntry; }, clear: function () { for (var id in this.cache) { var canvasEntry = this.cache[id]; // Zeroing the width and height causes Firefox to release graphics // resources immediately, which can greatly reduce memory consumption. canvasEntry.canvas.width = 0; canvasEntry.canvas.height = 0; delete this.cache[id]; } } }; return CachedCanvases; })(); function compileType3Glyph(imgData) { var POINT_TO_PROCESS_LIMIT = 1000; var width = imgData.width, height = imgData.height; var i, j, j0, width1 = width + 1; var points = new Uint8Array(width1 * (height + 1)); var POINT_TYPES = new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]); // decodes bit-packed mask data var lineSize = (width + 7) & ~7, data0 = imgData.data; var data = new Uint8Array(lineSize * height), pos = 0, ii; for (i = 0, ii = data0.length; i < ii; i++) { var mask = 128, elem = data0[i]; while (mask > 0) { data[pos++] = (elem & mask) ? 0 : 255; mask >>= 1; } } // finding iteresting points: every point is located between mask pixels, // so there will be points of the (width + 1)x(height + 1) grid. Every point // will have flags assigned based on neighboring mask pixels: // 4 | 8 // --P-- // 2 | 1 // We are interested only in points with the flags: // - outside corners: 1, 2, 4, 8; // - inside corners: 7, 11, 13, 14; // - and, intersections: 5, 10. var count = 0; pos = 0; if (data[pos] !== 0) { points[0] = 1; ++count; } for (j = 1; j < width; j++) { if (data[pos] !== data[pos + 1]) { points[j] = data[pos] ? 2 : 1; ++count; } pos++; } if (data[pos] !== 0) { points[j] = 2; ++count; } for (i = 1; i < height; i++) { pos = i * lineSize; j0 = i * width1; if (data[pos - lineSize] !== data[pos]) { points[j0] = data[pos] ? 1 : 8; ++count; } // 'sum' is the position of the current pixel configuration in the 'TYPES' // array (in order 8-1-2-4, so we can use '>>2' to shift the column). var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0); for (j = 1; j < width; j++) { sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) + (data[pos - lineSize + 1] ? 8 : 0); if (POINT_TYPES[sum]) { points[j0 + j] = POINT_TYPES[sum]; ++count; } pos++; } if (data[pos - lineSize] !== data[pos]) { points[j0 + j] = data[pos] ? 2 : 4; ++count; } if (count > POINT_TO_PROCESS_LIMIT) { return null; } } pos = lineSize * (height - 1); j0 = i * width1; if (data[pos] !== 0) { points[j0] = 8; ++count; } for (j = 1; j < width; j++) { if (data[pos] !== data[pos + 1]) { points[j0 + j] = data[pos] ? 4 : 8; ++count; } pos++; } if (data[pos] !== 0) { points[j0 + j] = 4; ++count; } if (count > POINT_TO_PROCESS_LIMIT) { return null; } // building outlines var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]); var outlines = []; for (i = 0; count && i <= height; i++) { var p = i * width1; var end = p + width; while (p < end && !points[p]) { p++; } if (p === end) { continue; } var coords = [p % width1, i]; var type = points[p], p0 = p, pp; do { var step = steps[type]; do { p += step; } while (!points[p]); pp = points[p]; if (pp !== 5 && pp !== 10) { // set new direction type = pp; // delete mark points[p] = 0; } else { // type is 5 or 10, ie, a crossing // set new direction type = pp & ((0x33 * type) >> 4); // set new type for "future hit" points[p] &= (type >> 2 | type << 2); } coords.push(p % width1); coords.push((p / width1) | 0); --count; } while (p0 !== p); outlines.push(coords); --i; } var drawOutline = function(c) { c.save(); // the path shall be painted in [0..1]x[0..1] space c.scale(1 / width, -1 / height); c.translate(0, -height); c.beginPath(); for (var i = 0, ii = outlines.length; i < ii; i++) { var o = outlines[i]; c.moveTo(o[0], o[1]); for (var j = 2, jj = o.length; j < jj; j += 2) { c.lineTo(o[j], o[j+1]); } } c.fill(); c.beginPath(); c.restore(); }; return drawOutline; } var CanvasExtraState = (function CanvasExtraStateClosure() { function CanvasExtraState(old) { // Are soft masks and alpha values shapes or opacities? this.alphaIsShape = false; this.fontSize = 0; this.fontSizeScale = 1; this.textMatrix = IDENTITY_MATRIX; this.textMatrixScale = 1; this.fontMatrix = FONT_IDENTITY_MATRIX; this.leading = 0; // Current point (in user coordinates) this.x = 0; this.y = 0; // Start of text line (in text coordinates) this.lineX = 0; this.lineY = 0; // Character and word spacing this.charSpacing = 0; this.wordSpacing = 0; this.textHScale = 1; this.textRenderingMode = TextRenderingMode.FILL; this.textRise = 0; // Default fore and background colors this.fillColor = '#000000'; this.strokeColor = '#000000'; this.patternFill = false; // Note: fill alpha applies to all non-stroking operations this.fillAlpha = 1; this.strokeAlpha = 1; this.lineWidth = 1; this.activeSMask = null; // nonclonable field (see the save method below) this.old = old; } CanvasExtraState.prototype = { clone: function CanvasExtraState_clone() { return Object.create(this); }, setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) { this.x = x; this.y = y; } }; return CanvasExtraState; })(); var CanvasGraphics = (function CanvasGraphicsClosure() { // Defines the time the executeOperatorList is going to be executing // before it stops and shedules a continue of execution. var EXECUTION_TIME = 15; // Defines the number of steps before checking the execution time var EXECUTION_STEPS = 10; function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) { this.ctx = canvasCtx; this.current = new CanvasExtraState(); this.stateStack = []; this.pendingClip = null; this.pendingEOFill = false; this.res = null; this.xobjs = null; this.commonObjs = commonObjs; this.objs = objs; this.imageLayer = imageLayer; this.groupStack = []; this.processingType3 = null; // Patterns are painted relative to the initial page/form transform, see pdf // spec 8.7.2 NOTE 1. this.baseTransform = null; this.baseTransformStack = []; this.groupLevel = 0; this.smaskStack = []; this.smaskCounter = 0; this.tempSMask = null; this.cachedCanvases = new CachedCanvases(); if (canvasCtx) { // NOTE: if mozCurrentTransform is polyfilled, then the current state of // the transformation must already be set in canvasCtx._transformMatrix. addContextCurrentTransform(canvasCtx); } this.cachedGetSinglePixelWidth = null; } function putBinaryImageData(ctx, imgData) { if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) { ctx.putImageData(imgData, 0, 0); return; } // Put the image data to the canvas in chunks, rather than putting the // whole image at once. This saves JS memory, because the ImageData object // is smaller. It also possibly saves C++ memory within the implementation // of putImageData(). (E.g. in Firefox we make two short-lived copies of // the data passed to putImageData()). |n| shouldn't be too small, however, // because too many putImageData() calls will slow things down. // // Note: as written, if the last chunk is partial, the putImageData() call // will (conceptually) put pixels past the bounds of the canvas. But // that's ok; any such pixels are ignored. var height = imgData.height, width = imgData.width; var partialChunkHeight = height % FULL_CHUNK_HEIGHT; var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT; var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1; var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT); var srcPos = 0, destPos; var src = imgData.data; var dest = chunkImgData.data; var i, j, thisChunkHeight, elemsInThisChunk; // There are multiple forms in which the pixel data can be passed, and // imgData.kind tells us which one this is. if (imgData.kind === ImageKind.GRAYSCALE_1BPP) { // Grayscale, 1 bit per pixel (i.e. black-and-white). var srcLength = src.byteLength; var dest32 = PDFJS.hasCanvasTypedArrays ? new Uint32Array(dest.buffer) : new Uint32ArrayView(dest); var dest32DataLength = dest32.length; var fullSrcDiff = (width + 7) >> 3; var white = 0xFFFFFFFF; var black = (PDFJS.isLittleEndian || !PDFJS.hasCanvasTypedArrays) ? 0xFF000000 : 0x000000FF; for (i = 0; i < totalChunks; i++) { thisChunkHeight = (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight; destPos = 0; for (j = 0; j < thisChunkHeight; j++) { var srcDiff = srcLength - srcPos; var k = 0; var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7; var kEndUnrolled = kEnd & ~7; var mask = 0; var srcByte = 0; for (; k < kEndUnrolled; k += 8) { srcByte = src[srcPos++]; dest32[destPos++] = (srcByte & 128) ? white : black; dest32[destPos++] = (srcByte & 64) ? white : black; dest32[destPos++] = (srcByte & 32) ? white : black; dest32[destPos++] = (srcByte & 16) ? white : black; dest32[destPos++] = (srcByte & 8) ? white : black; dest32[destPos++] = (srcByte & 4) ? white : black; dest32[destPos++] = (srcByte & 2) ? white : black; dest32[destPos++] = (srcByte & 1) ? white : black; } for (; k < kEnd; k++) { if (mask === 0) { srcByte = src[srcPos++]; mask = 128; } dest32[destPos++] = (srcByte & mask) ? white : black; mask >>= 1; } } // We ran out of input. Make all remaining pixels transparent. while (destPos < dest32DataLength) { dest32[destPos++] = 0; } ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT); } } else if (imgData.kind === ImageKind.RGBA_32BPP) { // RGBA, 32-bits per pixel. j = 0; elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4; for (i = 0; i < fullChunks; i++) { dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk)); srcPos += elemsInThisChunk; ctx.putImageData(chunkImgData, 0, j); j += FULL_CHUNK_HEIGHT; } if (i < totalChunks) { elemsInThisChunk = width * partialChunkHeight * 4; dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk)); ctx.putImageData(chunkImgData, 0, j); } } else if (imgData.kind === ImageKind.RGB_24BPP) { // RGB, 24-bits per pixel. thisChunkHeight = FULL_CHUNK_HEIGHT; elemsInThisChunk = width * thisChunkHeight; for (i = 0; i < totalChunks; i++) { if (i >= fullChunks) { thisChunkHeight = partialChunkHeight; elemsInThisChunk = width * thisChunkHeight; } destPos = 0; for (j = elemsInThisChunk; j--;) { dest[destPos++] = src[srcPos++]; dest[destPos++] = src[srcPos++]; dest[destPos++] = src[srcPos++]; dest[destPos++] = 255; } ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT); } } else { error('bad image kind: ' + imgData.kind); } } function putBinaryImageMask(ctx, imgData) { var height = imgData.height, width = imgData.width; var partialChunkHeight = height % FULL_CHUNK_HEIGHT; var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT; var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1; var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT); var srcPos = 0; var src = imgData.data; var dest = chunkImgData.data; for (var i = 0; i < totalChunks; i++) { var thisChunkHeight = (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight; // Expand the mask so it can be used by the canvas. Any required // inversion has already been handled. var destPos = 3; // alpha component offset for (var j = 0; j < thisChunkHeight; j++) { var mask = 0; for (var k = 0; k < width; k++) { if (!mask) { var elem = src[srcPos++]; mask = 128; } dest[destPos] = (elem & mask) ? 0 : 255; destPos += 4; mask >>= 1; } } ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT); } } function copyCtxState(sourceCtx, destCtx) { var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha', 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit', 'globalCompositeOperation', 'font']; for (var i = 0, ii = properties.length; i < ii; i++) { var property = properties[i]; if (sourceCtx[property] !== undefined) { destCtx[property] = sourceCtx[property]; } } if (sourceCtx.setLineDash !== undefined) { destCtx.setLineDash(sourceCtx.getLineDash()); destCtx.lineDashOffset = sourceCtx.lineDashOffset; } else if (sourceCtx.mozDashOffset !== undefined) { destCtx.mozDash = sourceCtx.mozDash; destCtx.mozDashOffset = sourceCtx.mozDashOffset; } } function composeSMaskBackdrop(bytes, r0, g0, b0) { var length = bytes.length; for (var i = 3; i < length; i += 4) { var alpha = bytes[i]; if (alpha === 0) { bytes[i - 3] = r0; bytes[i - 2] = g0; bytes[i - 1] = b0; } else if (alpha < 255) { var alpha_ = 255 - alpha; bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8; bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8; bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8; } } } function composeSMaskAlpha(maskData, layerData, transferMap) { var length = maskData.length; var scale = 1 / 255; for (var i = 3; i < length; i += 4) { var alpha = transferMap ? transferMap[maskData[i]] : maskData[i]; layerData[i] = (layerData[i] * alpha * scale) | 0; } } function composeSMaskLuminosity(maskData, layerData, transferMap) { var length = maskData.length; for (var i = 3; i < length; i += 4) { var y = (maskData[i - 3] * 77) + // * 0.3 / 255 * 0x10000 (maskData[i - 2] * 152) + // * 0.59 .... (maskData[i - 1] * 28); // * 0.11 .... layerData[i] = transferMap ? (layerData[i] * transferMap[y >> 8]) >> 8 : (layerData[i] * y) >> 16; } } function genericComposeSMask(maskCtx, layerCtx, width, height, subtype, backdrop, transferMap) { var hasBackdrop = !!backdrop; var r0 = hasBackdrop ? backdrop[0] : 0; var g0 = hasBackdrop ? backdrop[1] : 0; var b0 = hasBackdrop ? backdrop[2] : 0; var composeFn; if (subtype === 'Luminosity') { composeFn = composeSMaskLuminosity; } else { composeFn = composeSMaskAlpha; } // processing image in chunks to save memory var PIXELS_TO_PROCESS = 1048576; var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width)); for (var row = 0; row < height; row += chunkSize) { var chunkHeight = Math.min(chunkSize, height - row); var maskData = maskCtx.getImageData(0, row, width, chunkHeight); var layerData = layerCtx.getImageData(0, row, width, chunkHeight); if (hasBackdrop) { composeSMaskBackdrop(maskData.data, r0, g0, b0); } composeFn(maskData.data, layerData.data, transferMap); maskCtx.putImageData(layerData, 0, row); } } function composeSMask(ctx, smask, layerCtx) { var mask = smask.canvas; var maskCtx = smask.context; ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY, smask.offsetX, smask.offsetY); var backdrop = smask.backdrop || null; if (!smask.transferMap && WebGLUtils.isEnabled) { var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask, {subtype: smask.subtype, backdrop: backdrop}); ctx.setTransform(1, 0, 0, 1, 0, 0); ctx.drawImage(composed, smask.offsetX, smask.offsetY); return; } genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height, smask.subtype, backdrop, smask.transferMap); ctx.drawImage(mask, 0, 0); } var LINE_CAP_STYLES = ['butt', 'round', 'square']; var LINE_JOIN_STYLES = ['miter', 'round', 'bevel']; var NORMAL_CLIP = {}; var EO_CLIP = {}; CanvasGraphics.prototype = { beginDrawing: function CanvasGraphics_beginDrawing(transform, viewport, transparency) { // For pdfs that use blend modes we have to clear the canvas else certain // blend modes can look wrong since we'd be blending with a white // backdrop. The problem with a transparent backdrop though is we then // don't get sub pixel anti aliasing on text, creating temporary // transparent canvas when we have blend modes. var width = this.ctx.canvas.width; var height = this.ctx.canvas.height; this.ctx.save(); this.ctx.fillStyle = 'rgb(255, 255, 255)'; this.ctx.fillRect(0, 0, width, height); this.ctx.restore(); if (transparency) { var transparentCanvas = this.cachedCanvases.getCanvas( 'transparent', width, height, true); this.compositeCtx = this.ctx; this.transparentCanvas = transparentCanvas.canvas; this.ctx = transparentCanvas.context; this.ctx.save(); // The transform can be applied before rendering, transferring it to // the new canvas. this.ctx.transform.apply(this.ctx, this.compositeCtx.mozCurrentTransform); } this.ctx.save(); if (transform) { this.ctx.transform.apply(this.ctx, transform); } this.ctx.transform.apply(this.ctx, viewport.transform); this.baseTransform = this.ctx.mozCurrentTransform.slice(); if (this.imageLayer) { this.imageLayer.beginLayout(); } }, executeOperatorList: function CanvasGraphics_executeOperatorList( operatorList, executionStartIdx, continueCallback, stepper) { var argsArray = operatorList.argsArray; var fnArray = operatorList.fnArray; var i = executionStartIdx || 0; var argsArrayLen = argsArray.length; // Sometimes the OperatorList to execute is empty. if (argsArrayLen === i) { return i; } var chunkOperations = (argsArrayLen - i > EXECUTION_STEPS && typeof continueCallback === 'function'); var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0; var steps = 0; var commonObjs = this.commonObjs; var objs = this.objs; var fnId; while (true) { if (stepper !== undefined && i === stepper.nextBreakPoint) { stepper.breakIt(i, continueCallback); return i; } fnId = fnArray[i]; if (fnId !== OPS.dependency) { this[fnId].apply(this, argsArray[i]); } else { var deps = argsArray[i]; for (var n = 0, nn = deps.length; n < nn; n++) { var depObjId = deps[n]; var common = depObjId[0] === 'g' && depObjId[1] === '_'; var objsPool = common ? commonObjs : objs; // If the promise isn't resolved yet, add the continueCallback // to the promise and bail out. if (!objsPool.isResolved(depObjId)) { objsPool.get(depObjId, continueCallback); return i; } } } i++; // If the entire operatorList was executed, stop as were done. if (i === argsArrayLen) { return i; } // If the execution took longer then a certain amount of time and // `continueCallback` is specified, interrupt the execution. if (chunkOperations && ++steps > EXECUTION_STEPS) { if (Date.now() > endTime) { continueCallback(); return i; } steps = 0; } // If the operatorList isn't executed completely yet OR the execution // time was short enough, do another execution round. } }, endDrawing: function CanvasGraphics_endDrawing() { this.ctx.restore(); if (this.transparentCanvas) { this.ctx = this.compositeCtx; this.ctx.drawImage(this.transparentCanvas, 0, 0); this.transparentCanvas = null; } this.cachedCanvases.clear(); WebGLUtils.clear(); if (this.imageLayer) { this.imageLayer.endLayout(); } }, // Graphics state setLineWidth: function CanvasGraphics_setLineWidth(width) { this.current.lineWidth = width; this.ctx.lineWidth = width; }, setLineCap: function CanvasGraphics_setLineCap(style) { this.ctx.lineCap = LINE_CAP_STYLES[style]; }, setLineJoin: function CanvasGraphics_setLineJoin(style) { this.ctx.lineJoin = LINE_JOIN_STYLES[style]; }, setMiterLimit: function CanvasGraphics_setMiterLimit(limit) { this.ctx.miterLimit = limit; }, setDash: function CanvasGraphics_setDash(dashArray, dashPhase) { var ctx = this.ctx; if (ctx.setLineDash !== undefined) { ctx.setLineDash(dashArray); ctx.lineDashOffset = dashPhase; } else { ctx.mozDash = dashArray; ctx.mozDashOffset = dashPhase; } }, setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) { // Maybe if we one day fully support color spaces this will be important // for now we can ignore. // TODO set rendering intent? }, setFlatness: function CanvasGraphics_setFlatness(flatness) { // There's no way to control this with canvas, but we can safely ignore. // TODO set flatness? }, setGState: function CanvasGraphics_setGState(states) { for (var i = 0, ii = states.length; i < ii; i++) { var state = states[i]; var key = state[0]; var value = state[1]; switch (key) { case 'LW': this.setLineWidth(value); break; case 'LC': this.setLineCap(value); break; case 'LJ': this.setLineJoin(value); break; case 'ML': this.setMiterLimit(value); break; case 'D': this.setDash(value[0], value[1]); break; case 'RI': this.setRenderingIntent(value); break; case 'FL': this.setFlatness(value); break; case 'Font': this.setFont(value[0], value[1]); break; case 'CA': this.current.strokeAlpha = state[1]; break; case 'ca': this.current.fillAlpha = state[1]; this.ctx.globalAlpha = state[1]; break; case 'BM': if (value && value.name && (value.name !== 'Normal')) { var mode = value.name.replace(/([A-Z])/g, function(c) { return '-' + c.toLowerCase(); } ).substring(1); this.ctx.globalCompositeOperation = mode; if (this.ctx.globalCompositeOperation !== mode) { warn('globalCompositeOperation "' + mode + '" is not supported'); } } else { this.ctx.globalCompositeOperation = 'source-over'; } break; case 'SMask': if (this.current.activeSMask) { this.endSMaskGroup(); } this.current.activeSMask = value ? this.tempSMask : null; if (this.current.activeSMask) { this.beginSMaskGroup(); } this.tempSMask = null; break; } } }, beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() { var activeSMask = this.current.activeSMask; var drawnWidth = activeSMask.canvas.width; var drawnHeight = activeSMask.canvas.height; var cacheId = 'smaskGroupAt' + this.groupLevel; var scratchCanvas = this.cachedCanvases.getCanvas( cacheId, drawnWidth, drawnHeight, true); var currentCtx = this.ctx; var currentTransform = currentCtx.mozCurrentTransform; this.ctx.save(); var groupCtx = scratchCanvas.context; groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY); groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY); groupCtx.transform.apply(groupCtx, currentTransform); copyCtxState(currentCtx, groupCtx); this.ctx = groupCtx; this.setGState([ ['BM', 'Normal'], ['ca', 1], ['CA', 1] ]); this.groupStack.push(currentCtx); this.groupLevel++; }, endSMaskGroup: function CanvasGraphics_endSMaskGroup() { var groupCtx = this.ctx; this.groupLevel--; this.ctx = this.groupStack.pop(); composeSMask(this.ctx, this.current.activeSMask, groupCtx); this.ctx.restore(); copyCtxState(groupCtx, this.ctx); }, save: function CanvasGraphics_save() { this.ctx.save(); var old = this.current; this.stateStack.push(old); this.current = old.clone(); this.current.activeSMask = null; }, restore: function CanvasGraphics_restore() { if (this.stateStack.length !== 0) { if (this.current.activeSMask !== null) { this.endSMaskGroup(); } this.current = this.stateStack.pop(); this.ctx.restore(); // Ensure that the clipping path is reset (fixes issue6413.pdf). this.pendingClip = null; this.cachedGetSinglePixelWidth = null; } }, transform: function CanvasGraphics_transform(a, b, c, d, e, f) { this.ctx.transform(a, b, c, d, e, f); this.cachedGetSinglePixelWidth = null; }, // Path constructPath: function CanvasGraphics_constructPath(ops, args) { var ctx = this.ctx; var current = this.current; var x = current.x, y = current.y; for (var i = 0, j = 0, ii = ops.length; i < ii; i++) { switch (ops[i] | 0) { case OPS.rectangle: x = args[j++]; y = args[j++]; var width = args[j++]; var height = args[j++]; if (width === 0) { width = this.getSinglePixelWidth(); } if (height === 0) { height = this.getSinglePixelWidth(); } var xw = x + width; var yh = y + height; this.ctx.moveTo(x, y); this.ctx.lineTo(xw, y); this.ctx.lineTo(xw, yh); this.ctx.lineTo(x, yh); this.ctx.lineTo(x, y); this.ctx.closePath(); break; case OPS.moveTo: x = args[j++]; y = args[j++]; ctx.moveTo(x, y); break; case OPS.lineTo: x = args[j++]; y = args[j++]; ctx.lineTo(x, y); break; case OPS.curveTo: x = args[j + 4]; y = args[j + 5]; ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3], x, y); j += 6; break; case OPS.curveTo2: ctx.bezierCurveTo(x, y, args[j], args[j + 1], args[j + 2], args[j + 3]); x = args[j + 2]; y = args[j + 3]; j += 4; break; case OPS.curveTo3: x = args[j + 2]; y = args[j + 3]; ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y); j += 4; break; case OPS.closePath: ctx.closePath(); break; } } current.setCurrentPoint(x, y); }, closePath: function CanvasGraphics_closePath() { this.ctx.closePath(); }, stroke: function CanvasGraphics_stroke(consumePath) { consumePath = typeof consumePath !== 'undefined' ? consumePath : true; var ctx = this.ctx; var strokeColor = this.current.strokeColor; // Prevent drawing too thin lines by enforcing a minimum line width. ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR, this.current.lineWidth); // For stroke we want to temporarily change the global alpha to the // stroking alpha. ctx.globalAlpha = this.current.strokeAlpha; if (strokeColor && strokeColor.hasOwnProperty('type') && strokeColor.type === 'Pattern') { // for patterns, we transform to pattern space, calculate // the pattern, call stroke, and restore to user space ctx.save(); ctx.strokeStyle = strokeColor.getPattern(ctx, this); ctx.stroke(); ctx.restore(); } else { ctx.stroke(); } if (consumePath) { this.consumePath(); } // Restore the global alpha to the fill alpha ctx.globalAlpha = this.current.fillAlpha; }, closeStroke: function CanvasGraphics_closeStroke() { this.closePath(); this.stroke(); }, fill: function CanvasGraphics_fill(consumePath) { consumePath = typeof consumePath !== 'undefined' ? consumePath : true; var ctx = this.ctx; var fillColor = this.current.fillColor; var isPatternFill = this.current.patternFill; var needRestore = false; if (isPatternFill) { ctx.save(); if (this.baseTransform) { ctx.setTransform.apply(ctx, this.baseTransform); } ctx.fillStyle = fillColor.getPattern(ctx, this); needRestore = true; } if (this.pendingEOFill) { if (ctx.mozFillRule !== undefined) { ctx.mozFillRule = 'evenodd'; ctx.fill(); ctx.mozFillRule = 'nonzero'; } else { ctx.fill('evenodd'); } this.pendingEOFill = false; } else { ctx.fill(); } if (needRestore) { ctx.restore(); } if (consumePath) { this.consumePath(); } }, eoFill: function CanvasGraphics_eoFill() { this.pendingEOFill = true; this.fill(); }, fillStroke: function CanvasGraphics_fillStroke() { this.fill(false); this.stroke(false); this.consumePath(); }, eoFillStroke: function CanvasGraphics_eoFillStroke() { this.pendingEOFill = true; this.fillStroke(); }, closeFillStroke: function CanvasGraphics_closeFillStroke() { this.closePath(); this.fillStroke(); }, closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() { this.pendingEOFill = true; this.closePath(); this.fillStroke(); }, endPath: function CanvasGraphics_endPath() { this.consumePath(); }, // Clipping clip: function CanvasGraphics_clip() { this.pendingClip = NORMAL_CLIP; }, eoClip: function CanvasGraphics_eoClip() { this.pendingClip = EO_CLIP; }, // Text beginText: function CanvasGraphics_beginText() { this.current.textMatrix = IDENTITY_MATRIX; this.current.textMatrixScale = 1; this.current.x = this.current.lineX = 0; this.current.y = this.current.lineY = 0; }, endText: function CanvasGraphics_endText() { var paths = this.pendingTextPaths; var ctx = this.ctx; if (paths === undefined) { ctx.beginPath(); return; } ctx.save(); ctx.beginPath(); for (var i = 0; i < paths.length; i++) { var path = paths[i]; ctx.setTransform.apply(ctx, path.transform); ctx.translate(path.x, path.y); path.addToPath(ctx, path.fontSize); } ctx.restore(); ctx.clip(); ctx.beginPath(); delete this.pendingTextPaths; }, setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) { this.current.charSpacing = spacing; }, setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) { this.current.wordSpacing = spacing; }, setHScale: function CanvasGraphics_setHScale(scale) { this.current.textHScale = scale / 100; }, setLeading: function CanvasGraphics_setLeading(leading) { this.current.leading = -leading; }, setFont: function CanvasGraphics_setFont(fontRefName, size) { var fontObj = this.commonObjs.get(fontRefName); var current = this.current; if (!fontObj) { error('Can\'t find font for ' + fontRefName); } current.fontMatrix = (fontObj.fontMatrix ? fontObj.fontMatrix : FONT_IDENTITY_MATRIX); // A valid matrix needs all main diagonal elements to be non-zero // This also ensures we bypass FF bugzilla bug #719844. if (current.fontMatrix[0] === 0 || current.fontMatrix[3] === 0) { warn('Invalid font matrix for font ' + fontRefName); } // The spec for Tf (setFont) says that 'size' specifies the font 'scale', // and in some docs this can be negative (inverted x-y axes). if (size < 0) { size = -size; current.fontDirection = -1; } else { current.fontDirection = 1; } this.current.font = fontObj; this.current.fontSize = size; if (fontObj.isType3Font) { return; // we don't need ctx.font for Type3 fonts } var name = fontObj.loadedName || 'sans-serif'; var bold = fontObj.black ? (fontObj.bold ? '900' : 'bold') : (fontObj.bold ? 'bold' : 'normal'); var italic = fontObj.italic ? 'italic' : 'normal'; var typeface = '"' + name + '", ' + fontObj.fallbackName; // Some font backends cannot handle fonts below certain size. // Keeping the font at minimal size and using the fontSizeScale to change // the current transformation matrix before the fillText/strokeText. // See https://bugzilla.mozilla.org/show_bug.cgi?id=726227 var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE : size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size; this.current.fontSizeScale = size / browserFontSize; var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface; this.ctx.font = rule; }, setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) { this.current.textRenderingMode = mode; }, setTextRise: function CanvasGraphics_setTextRise(rise) { this.current.textRise = rise; }, moveText: function CanvasGraphics_moveText(x, y) { this.current.x = this.current.lineX += x; this.current.y = this.current.lineY += y; }, setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) { this.setLeading(-y); this.moveText(x, y); }, setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) { this.current.textMatrix = [a, b, c, d, e, f]; this.current.textMatrixScale = Math.sqrt(a * a + b * b); this.current.x = this.current.lineX = 0; this.current.y = this.current.lineY = 0; }, nextLine: function CanvasGraphics_nextLine() { this.moveText(0, this.current.leading); }, paintChar: function CanvasGraphics_paintChar(character, x, y) { var ctx = this.ctx; var current = this.current; var font = current.font; var textRenderingMode = current.textRenderingMode; var fontSize = current.fontSize / current.fontSizeScale; var fillStrokeMode = textRenderingMode & TextRenderingMode.FILL_STROKE_MASK; var isAddToPathSet = !!(textRenderingMode & TextRenderingMode.ADD_TO_PATH_FLAG); var addToPath; if (font.disableFontFace || isAddToPathSet) { addToPath = font.getPathGenerator(this.commonObjs, character); } if (font.disableFontFace) { ctx.save(); ctx.translate(x, y); ctx.beginPath(); addToPath(ctx, fontSize); if (fillStrokeMode === TextRenderingMode.FILL || fillStrokeMode === TextRenderingMode.FILL_STROKE) { ctx.fill(); } if (fillStrokeMode === TextRenderingMode.STROKE || fillStrokeMode === TextRenderingMode.FILL_STROKE) { ctx.stroke(); } ctx.restore(); } else { if (fillStrokeMode === TextRenderingMode.FILL || fillStrokeMode === TextRenderingMode.FILL_STROKE) { ctx.fillText(character, x, y); } if (fillStrokeMode === TextRenderingMode.STROKE || fillStrokeMode === TextRenderingMode.FILL_STROKE) { ctx.strokeText(character, x, y); } } if (isAddToPathSet) { var paths = this.pendingTextPaths || (this.pendingTextPaths = []); paths.push({ transform: ctx.mozCurrentTransform, x: x, y: y, fontSize: fontSize, addToPath: addToPath }); } }, get isFontSubpixelAAEnabled() { // Checks if anti-aliasing is enabled when scaled text is painted. // On Windows GDI scaled fonts looks bad. var ctx = document.createElement('canvas').getContext('2d'); ctx.scale(1.5, 1); ctx.fillText('I', 0, 10); var data = ctx.getImageData(0, 0, 10, 10).data; var enabled = false; for (var i = 3; i < data.length; i += 4) { if (data[i] > 0 && data[i] < 255) { enabled = true; break; } } return shadow(this, 'isFontSubpixelAAEnabled', enabled); }, showText: function CanvasGraphics_showText(glyphs) { var current = this.current; var font = current.font; if (font.isType3Font) { return this.showType3Text(glyphs); } var fontSize = current.fontSize; if (fontSize === 0) { return; } var ctx = this.ctx; var fontSizeScale = current.fontSizeScale; var charSpacing = current.charSpacing; var wordSpacing = current.wordSpacing; var fontDirection = current.fontDirection; var textHScale = current.textHScale * fontDirection; var glyphsLength = glyphs.length; var vertical = font.vertical; var spacingDir = vertical ? 1 : -1; var defaultVMetrics = font.defaultVMetrics; var widthAdvanceScale = fontSize * current.fontMatrix[0]; var simpleFillText = current.textRenderingMode === TextRenderingMode.FILL && !font.disableFontFace; ctx.save(); ctx.transform.apply(ctx, current.textMatrix); ctx.translate(current.x, current.y + current.textRise); if (fontDirection > 0) { ctx.scale(textHScale, -1); } else { ctx.scale(textHScale, 1); } var lineWidth = current.lineWidth; var scale = current.textMatrixScale; if (scale === 0 || lineWidth === 0) { var fillStrokeMode = current.textRenderingMode & TextRenderingMode.FILL_STROKE_MASK; if (fillStrokeMode === TextRenderingMode.STROKE || fillStrokeMode === TextRenderingMode.FILL_STROKE) { this.cachedGetSinglePixelWidth = null; lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR; } } else { lineWidth /= scale; } if (fontSizeScale !== 1.0) { ctx.scale(fontSizeScale, fontSizeScale); lineWidth /= fontSizeScale; } ctx.lineWidth = lineWidth; var x = 0, i; for (i = 0; i < glyphsLength; ++i) { var glyph = glyphs[i]; if (isNum(glyph)) { x += spacingDir * glyph * fontSize / 1000; continue; } var restoreNeeded = false; var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing; var character = glyph.fontChar; var accent = glyph.accent; var scaledX, scaledY, scaledAccentX, scaledAccentY; var width = glyph.width; if (vertical) { var vmetric, vx, vy; vmetric = glyph.vmetric || defaultVMetrics; vx = glyph.vmetric ? vmetric[1] : width * 0.5; vx = -vx * widthAdvanceScale; vy = vmetric[2] * widthAdvanceScale; width = vmetric ? -vmetric[0] : width; scaledX = vx / fontSizeScale; scaledY = (x + vy) / fontSizeScale; } else { scaledX = x / fontSizeScale; scaledY = 0; } if (font.remeasure && width > 0) { // Some standard fonts may not have the exact width: rescale per // character if measured width is greater than expected glyph width // and subpixel-aa is enabled, otherwise just center the glyph. var measuredWidth = ctx.measureText(character).width * 1000 / fontSize * fontSizeScale; if (width < measuredWidth && this.isFontSubpixelAAEnabled) { var characterScaleX = width / measuredWidth; restoreNeeded = true; ctx.save(); ctx.scale(characterScaleX, 1); scaledX /= characterScaleX; } else if (width !== measuredWidth) { scaledX += (width - measuredWidth) / 2000 * fontSize / fontSizeScale; } } if (simpleFillText && !accent) { // common case ctx.fillText(character, scaledX, scaledY); } else { this.paintChar(character, scaledX, scaledY); if (accent) { scaledAccentX = scaledX + accent.offset.x / fontSizeScale; scaledAccentY = scaledY - accent.offset.y / fontSizeScale; this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY); } } var charWidth = width * widthAdvanceScale + spacing * fontDirection; x += charWidth; if (restoreNeeded) { ctx.restore(); } } if (vertical) { current.y -= x * textHScale; } else { current.x += x * textHScale; } ctx.restore(); }, showType3Text: function CanvasGraphics_showType3Text(glyphs) { // Type3 fonts - each glyph is a "mini-PDF" var ctx = this.ctx; var current = this.current; var font = current.font; var fontSize = current.fontSize; var fontDirection = current.fontDirection; var spacingDir = font.vertical ? 1 : -1; var charSpacing = current.charSpacing; var wordSpacing = current.wordSpacing; var textHScale = current.textHScale * fontDirection; var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX; var glyphsLength = glyphs.length; var isTextInvisible = current.textRenderingMode === TextRenderingMode.INVISIBLE; var i, glyph, width, spacingLength; if (isTextInvisible || fontSize === 0) { return; } this.cachedGetSinglePixelWidth = null; ctx.save(); ctx.transform.apply(ctx, current.textMatrix); ctx.translate(current.x, current.y); ctx.scale(textHScale, fontDirection); for (i = 0; i < glyphsLength; ++i) { glyph = glyphs[i]; if (isNum(glyph)) { spacingLength = spacingDir * glyph * fontSize / 1000; this.ctx.translate(spacingLength, 0); current.x += spacingLength * textHScale; continue; } var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing; var operatorList = font.charProcOperatorList[glyph.operatorListId]; if (!operatorList) { warn('Type3 character \"' + glyph.operatorListId + '\" is not available'); continue; } this.processingType3 = glyph; this.save(); ctx.scale(fontSize, fontSize); ctx.transform.apply(ctx, fontMatrix); this.executeOperatorList(operatorList); this.restore(); var transformed = Util.applyTransform([glyph.width, 0], fontMatrix); width = transformed[0] * fontSize + spacing; ctx.translate(width, 0); current.x += width * textHScale; } ctx.restore(); this.processingType3 = null; }, // Type3 fonts setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) { // We can safely ignore this since the width should be the same // as the width in the Widths array. }, setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth, yWidth, llx, lly, urx, ury) { // TODO According to the spec we're also suppose to ignore any operators // that set color or include images while processing this type3 font. this.ctx.rect(llx, lly, urx - llx, ury - lly); this.clip(); this.endPath(); }, // Color getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) { var pattern; if (IR[0] === 'TilingPattern') { var color = IR[1]; var baseTransform = this.baseTransform || this.ctx.mozCurrentTransform.slice(); pattern = new TilingPattern(IR, color, this.ctx, this.objs, this.commonObjs, baseTransform); } else { pattern = getShadingPatternFromIR(IR); } return pattern; }, setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) { this.current.strokeColor = this.getColorN_Pattern(arguments); }, setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) { this.current.fillColor = this.getColorN_Pattern(arguments); this.current.patternFill = true; }, setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) { var color = Util.makeCssRgb(r, g, b); this.ctx.strokeStyle = color; this.current.strokeColor = color; }, setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) { var color = Util.makeCssRgb(r, g, b); this.ctx.fillStyle = color; this.current.fillColor = color; this.current.patternFill = false; }, shadingFill: function CanvasGraphics_shadingFill(patternIR) { var ctx = this.ctx; this.save(); var pattern = getShadingPatternFromIR(patternIR); ctx.fillStyle = pattern.getPattern(ctx, this, true); var inv = ctx.mozCurrentTransformInverse; if (inv) { var canvas = ctx.canvas; var width = canvas.width; var height = canvas.height; var bl = Util.applyTransform([0, 0], inv); var br = Util.applyTransform([0, height], inv); var ul = Util.applyTransform([width, 0], inv); var ur = Util.applyTransform([width, height], inv); var x0 = Math.min(bl[0], br[0], ul[0], ur[0]); var y0 = Math.min(bl[1], br[1], ul[1], ur[1]); var x1 = Math.max(bl[0], br[0], ul[0], ur[0]); var y1 = Math.max(bl[1], br[1], ul[1], ur[1]); this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0); } else { // HACK to draw the gradient onto an infinite rectangle. // PDF gradients are drawn across the entire image while // Canvas only allows gradients to be drawn in a rectangle // The following bug should allow us to remove this. // https://bugzilla.mozilla.org/show_bug.cgi?id=664884 this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10); } this.restore(); }, // Images beginInlineImage: function CanvasGraphics_beginInlineImage() { error('Should not call beginInlineImage'); }, beginImageData: function CanvasGraphics_beginImageData() { error('Should not call beginImageData'); }, paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix, bbox) { this.save(); this.baseTransformStack.push(this.baseTransform); if (isArray(matrix) && 6 === matrix.length) { this.transform.apply(this, matrix); } this.baseTransform = this.ctx.mozCurrentTransform; if (isArray(bbox) && 4 === bbox.length) { var width = bbox[2] - bbox[0]; var height = bbox[3] - bbox[1]; this.ctx.rect(bbox[0], bbox[1], width, height); this.clip(); this.endPath(); } }, paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() { this.restore(); this.baseTransform = this.baseTransformStack.pop(); }, beginGroup: function CanvasGraphics_beginGroup(group) { this.save(); var currentCtx = this.ctx; // TODO non-isolated groups - according to Rik at adobe non-isolated // group results aren't usually that different and they even have tools // that ignore this setting. Notes from Rik on implmenting: // - When you encounter an transparency group, create a new canvas with // the dimensions of the bbox // - copy the content from the previous canvas to the new canvas // - draw as usual // - remove the backdrop alpha: // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha // value of your transparency group and 'alphaBackdrop' the alpha of the // backdrop // - remove background color: // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew) if (!group.isolated) { info('TODO: Support non-isolated groups.'); } // TODO knockout - supposedly possible with the clever use of compositing // modes. if (group.knockout) { warn('Knockout groups not supported.'); } var currentTransform = currentCtx.mozCurrentTransform; if (group.matrix) { currentCtx.transform.apply(currentCtx, group.matrix); } assert(group.bbox, 'Bounding box is required.'); // Based on the current transform figure out how big the bounding box // will actually be. var bounds = Util.getAxialAlignedBoundingBox( group.bbox, currentCtx.mozCurrentTransform); // Clip the bounding box to the current canvas. var canvasBounds = [0, 0, currentCtx.canvas.width, currentCtx.canvas.height]; bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0]; // Use ceil in case we're between sizes so we don't create canvas that is // too small and make the canvas at least 1x1 pixels. var offsetX = Math.floor(bounds[0]); var offsetY = Math.floor(bounds[1]); var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1); var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1); var scaleX = 1, scaleY = 1; if (drawnWidth > MAX_GROUP_SIZE) { scaleX = drawnWidth / MAX_GROUP_SIZE; drawnWidth = MAX_GROUP_SIZE; } if (drawnHeight > MAX_GROUP_SIZE) { scaleY = drawnHeight / MAX_GROUP_SIZE; drawnHeight = MAX_GROUP_SIZE; } var cacheId = 'groupAt' + this.groupLevel; if (group.smask) { // Using two cache entries is case if masks are used one after another. cacheId += '_smask_' + ((this.smaskCounter++) % 2); } var scratchCanvas = this.cachedCanvases.getCanvas( cacheId, drawnWidth, drawnHeight, true); var groupCtx = scratchCanvas.context; // Since we created a new canvas that is just the size of the bounding box // we have to translate the group ctx. groupCtx.scale(1 / scaleX, 1 / scaleY); groupCtx.translate(-offsetX, -offsetY); groupCtx.transform.apply(groupCtx, currentTransform); if (group.smask) { // Saving state and cached mask to be used in setGState. this.smaskStack.push({ canvas: scratchCanvas.canvas, context: groupCtx, offsetX: offsetX, offsetY: offsetY, scaleX: scaleX, scaleY: scaleY, subtype: group.smask.subtype, backdrop: group.smask.backdrop, transferMap: group.smask.transferMap || null }); } else { // Setup the current ctx so when the group is popped we draw it at the // right location. currentCtx.setTransform(1, 0, 0, 1, 0, 0); currentCtx.translate(offsetX, offsetY); currentCtx.scale(scaleX, scaleY); } // The transparency group inherits all off the current graphics state // except the blend mode, soft mask, and alpha constants. copyCtxState(currentCtx, groupCtx); this.ctx = groupCtx; this.setGState([ ['BM', 'Normal'], ['ca', 1], ['CA', 1] ]); this.groupStack.push(currentCtx); this.groupLevel++; }, endGroup: function CanvasGraphics_endGroup(group) { this.groupLevel--; var groupCtx = this.ctx; this.ctx = this.groupStack.pop(); // Turn off image smoothing to avoid sub pixel interpolation which can // look kind of blurry for some pdfs. if (this.ctx.imageSmoothingEnabled !== undefined) { this.ctx.imageSmoothingEnabled = false; } else { this.ctx.mozImageSmoothingEnabled = false; } if (group.smask) { this.tempSMask = this.smaskStack.pop(); } else { this.ctx.drawImage(groupCtx.canvas, 0, 0); } this.restore(); }, beginAnnotations: function CanvasGraphics_beginAnnotations() { this.save(); this.current = new CanvasExtraState(); }, endAnnotations: function CanvasGraphics_endAnnotations() { this.restore(); }, beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform, matrix) { this.save(); if (isArray(rect) && 4 === rect.length) { var width = rect[2] - rect[0]; var height = rect[3] - rect[1]; this.ctx.rect(rect[0], rect[1], width, height); this.clip(); this.endPath(); } this.transform.apply(this, transform); this.transform.apply(this, matrix); }, endAnnotation: function CanvasGraphics_endAnnotation() { this.restore(); }, paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) { var domImage = this.objs.get(objId); if (!domImage) { warn('Dependent image isn\'t ready yet'); return; } this.save(); var ctx = this.ctx; // scale the image to the unit square ctx.scale(1 / w, -1 / h); ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height, 0, -h, w, h); if (this.imageLayer) { var currentTransform = ctx.mozCurrentTransformInverse; var position = this.getCanvasPosition(0, 0); this.imageLayer.appendImage({ objId: objId, left: position[0], top: position[1], width: w / currentTransform[0], height: h / currentTransform[3] }); } this.restore(); }, paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) { var ctx = this.ctx; var width = img.width, height = img.height; var fillColor = this.current.fillColor; var isPatternFill = this.current.patternFill; var glyph = this.processingType3; if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) { if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) { glyph.compiled = compileType3Glyph({data: img.data, width: width, height: height}); } else { glyph.compiled = null; } } if (glyph && glyph.compiled) { glyph.compiled(ctx); return; } var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas', width, height); var maskCtx = maskCanvas.context; maskCtx.save(); putBinaryImageMask(maskCtx, img); maskCtx.globalCompositeOperation = 'source-in'; maskCtx.fillStyle = isPatternFill ? fillColor.getPattern(maskCtx, this) : fillColor; maskCtx.fillRect(0, 0, width, height); maskCtx.restore(); this.paintInlineImageXObject(maskCanvas.canvas); }, paintImageMaskXObjectRepeat: function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX, scaleY, positions) { var width = imgData.width; var height = imgData.height; var fillColor = this.current.fillColor; var isPatternFill = this.current.patternFill; var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas', width, height); var maskCtx = maskCanvas.context; maskCtx.save(); putBinaryImageMask(maskCtx, imgData); maskCtx.globalCompositeOperation = 'source-in'; maskCtx.fillStyle = isPatternFill ? fillColor.getPattern(maskCtx, this) : fillColor; maskCtx.fillRect(0, 0, width, height); maskCtx.restore(); var ctx = this.ctx; for (var i = 0, ii = positions.length; i < ii; i += 2) { ctx.save(); ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]); ctx.scale(1, -1); ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, 0, -1, 1, 1); ctx.restore(); } }, paintImageMaskXObjectGroup: function CanvasGraphics_paintImageMaskXObjectGroup(images) { var ctx = this.ctx; var fillColor = this.current.fillColor; var isPatternFill = this.current.patternFill; for (var i = 0, ii = images.length; i < ii; i++) { var image = images[i]; var width = image.width, height = image.height; var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas', width, height); var maskCtx = maskCanvas.context; maskCtx.save(); putBinaryImageMask(maskCtx, image); maskCtx.globalCompositeOperation = 'source-in'; maskCtx.fillStyle = isPatternFill ? fillColor.getPattern(maskCtx, this) : fillColor; maskCtx.fillRect(0, 0, width, height); maskCtx.restore(); ctx.save(); ctx.transform.apply(ctx, image.transform); ctx.scale(1, -1); ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, 0, -1, 1, 1); ctx.restore(); } }, paintImageXObject: function CanvasGraphics_paintImageXObject(objId) { var imgData = this.objs.get(objId); if (!imgData) { warn('Dependent image isn\'t ready yet'); return; } this.paintInlineImageXObject(imgData); }, paintImageXObjectRepeat: function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY, positions) { var imgData = this.objs.get(objId); if (!imgData) { warn('Dependent image isn\'t ready yet'); return; } var width = imgData.width; var height = imgData.height; var map = []; for (var i = 0, ii = positions.length; i < ii; i += 2) { map.push({transform: [scaleX, 0, 0, scaleY, positions[i], positions[i + 1]], x: 0, y: 0, w: width, h: height}); } this.paintInlineImageXObjectGroup(imgData, map); }, paintInlineImageXObject: function CanvasGraphics_paintInlineImageXObject(imgData) { var width = imgData.width; var height = imgData.height; var ctx = this.ctx; this.save(); // scale the image to the unit square ctx.scale(1 / width, -1 / height); var currentTransform = ctx.mozCurrentTransformInverse; var a = currentTransform[0], b = currentTransform[1]; var widthScale = Math.max(Math.sqrt(a * a + b * b), 1); var c = currentTransform[2], d = currentTransform[3]; var heightScale = Math.max(Math.sqrt(c * c + d * d), 1); var imgToPaint, tmpCanvas; // instanceof HTMLElement does not work in jsdom node.js module if (imgData instanceof HTMLElement || !imgData.data) { imgToPaint = imgData; } else { tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', width, height); var tmpCtx = tmpCanvas.context; putBinaryImageData(tmpCtx, imgData); imgToPaint = tmpCanvas.canvas; } var paintWidth = width, paintHeight = height; var tmpCanvasId = 'prescale1'; // Vertial or horizontal scaling shall not be more than 2 to not loose the // pixels during drawImage operation, painting on the temporary canvas(es) // that are twice smaller in size while ((widthScale > 2 && paintWidth > 1) || (heightScale > 2 && paintHeight > 1)) { var newWidth = paintWidth, newHeight = paintHeight; if (widthScale > 2 && paintWidth > 1) { newWidth = Math.ceil(paintWidth / 2); widthScale /= paintWidth / newWidth; } if (heightScale > 2 && paintHeight > 1) { newHeight = Math.ceil(paintHeight / 2); heightScale /= paintHeight / newHeight; } tmpCanvas = this.cachedCanvases.getCanvas(tmpCanvasId, newWidth, newHeight); tmpCtx = tmpCanvas.context; tmpCtx.clearRect(0, 0, newWidth, newHeight); tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight, 0, 0, newWidth, newHeight); imgToPaint = tmpCanvas.canvas; paintWidth = newWidth; paintHeight = newHeight; tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1'; } ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight, 0, -height, width, height); if (this.imageLayer) { var position = this.getCanvasPosition(0, -height); this.imageLayer.appendImage({ imgData: imgData, left: position[0], top: position[1], width: width / currentTransform[0], height: height / currentTransform[3] }); } this.restore(); }, paintInlineImageXObjectGroup: function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) { var ctx = this.ctx; var w = imgData.width; var h = imgData.height; var tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', w, h); var tmpCtx = tmpCanvas.context; putBinaryImageData(tmpCtx, imgData); for (var i = 0, ii = map.length; i < ii; i++) { var entry = map[i]; ctx.save(); ctx.transform.apply(ctx, entry.transform); ctx.scale(1, -1); ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h, 0, -1, 1, 1); if (this.imageLayer) { var position = this.getCanvasPosition(entry.x, entry.y); this.imageLayer.appendImage({ imgData: imgData, left: position[0], top: position[1], width: w, height: h }); } ctx.restore(); } }, paintSolidColorImageMask: function CanvasGraphics_paintSolidColorImageMask() { this.ctx.fillRect(0, 0, 1, 1); }, paintXObject: function CanvasGraphics_paintXObject() { warn('Unsupported \'paintXObject\' command.'); }, // Marked content markPoint: function CanvasGraphics_markPoint(tag) { // TODO Marked content. }, markPointProps: function CanvasGraphics_markPointProps(tag, properties) { // TODO Marked content. }, beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) { // TODO Marked content. }, beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps( tag, properties) { // TODO Marked content. }, endMarkedContent: function CanvasGraphics_endMarkedContent() { // TODO Marked content. }, // Compatibility beginCompat: function CanvasGraphics_beginCompat() { // TODO ignore undefined operators (should we do that anyway?) }, endCompat: function CanvasGraphics_endCompat() { // TODO stop ignoring undefined operators }, // Helper functions consumePath: function CanvasGraphics_consumePath() { var ctx = this.ctx; if (this.pendingClip) { if (this.pendingClip === EO_CLIP) { if (ctx.mozFillRule !== undefined) { ctx.mozFillRule = 'evenodd'; ctx.clip(); ctx.mozFillRule = 'nonzero'; } else { ctx.clip('evenodd'); } } else { ctx.clip(); } this.pendingClip = null; } ctx.beginPath(); }, getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) { if (this.cachedGetSinglePixelWidth === null) { var inverse = this.ctx.mozCurrentTransformInverse; // max of the current horizontal and vertical scale this.cachedGetSinglePixelWidth = Math.sqrt(Math.max( (inverse[0] * inverse[0] + inverse[1] * inverse[1]), (inverse[2] * inverse[2] + inverse[3] * inverse[3]))); } return this.cachedGetSinglePixelWidth; }, getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) { var transform = this.ctx.mozCurrentTransform; return [ transform[0] * x + transform[2] * y + transform[4], transform[1] * x + transform[3] * y + transform[5] ]; } }; for (var op in OPS) { CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op]; } return CanvasGraphics; })(); var WebGLUtils = (function WebGLUtilsClosure() { function loadShader(gl, code, shaderType) { var shader = gl.createShader(shaderType); gl.shaderSource(shader, code); gl.compileShader(shader); var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS); if (!compiled) { var errorMsg = gl.getShaderInfoLog(shader); throw new Error('Error during shader compilation: ' + errorMsg); } return shader; } function createVertexShader(gl, code) { return loadShader(gl, code, gl.VERTEX_SHADER); } function createFragmentShader(gl, code) { return loadShader(gl, code, gl.FRAGMENT_SHADER); } function createProgram(gl, shaders) { var program = gl.createProgram(); for (var i = 0, ii = shaders.length; i < ii; ++i) { gl.attachShader(program, shaders[i]); } gl.linkProgram(program); var linked = gl.getProgramParameter(program, gl.LINK_STATUS); if (!linked) { var errorMsg = gl.getProgramInfoLog(program); throw new Error('Error during program linking: ' + errorMsg); } return program; } function createTexture(gl, image, textureId) { gl.activeTexture(textureId); var texture = gl.createTexture(); gl.bindTexture(gl.TEXTURE_2D, texture); // Set the parameters so we can render any size image. gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); // Upload the image into the texture. gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image); return texture; } var currentGL, currentCanvas; function generateGL() { if (currentGL) { return; } currentCanvas = document.createElement('canvas'); currentGL = currentCanvas.getContext('webgl', { premultipliedalpha: false }); } var smaskVertexShaderCode = '\ attribute vec2 a_position; \ attribute vec2 a_texCoord; \ \ uniform vec2 u_resolution; \ \ varying vec2 v_texCoord; \ \ void main() { \ vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0; \ gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \ \ v_texCoord = a_texCoord; \ } '; var smaskFragmentShaderCode = '\ precision mediump float; \ \ uniform vec4 u_backdrop; \ uniform int u_subtype; \ uniform sampler2D u_image; \ uniform sampler2D u_mask; \ \ varying vec2 v_texCoord; \ \ void main() { \ vec4 imageColor = texture2D(u_image, v_texCoord); \ vec4 maskColor = texture2D(u_mask, v_texCoord); \ if (u_backdrop.a > 0.0) { \ maskColor.rgb = maskColor.rgb * maskColor.a + \ u_backdrop.rgb * (1.0 - maskColor.a); \ } \ float lum; \ if (u_subtype == 0) { \ lum = maskColor.a; \ } else { \ lum = maskColor.r * 0.3 + maskColor.g * 0.59 + \ maskColor.b * 0.11; \ } \ imageColor.a *= lum; \ imageColor.rgb *= imageColor.a; \ gl_FragColor = imageColor; \ } '; var smaskCache = null; function initSmaskGL() { var canvas, gl; generateGL(); canvas = currentCanvas; currentCanvas = null; gl = currentGL; currentGL = null; // setup a GLSL program var vertexShader = createVertexShader(gl, smaskVertexShaderCode); var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode); var program = createProgram(gl, [vertexShader, fragmentShader]); gl.useProgram(program); var cache = {}; cache.gl = gl; cache.canvas = canvas; cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution'); cache.positionLocation = gl.getAttribLocation(program, 'a_position'); cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop'); cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype'); var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord'); var texLayerLocation = gl.getUniformLocation(program, 'u_image'); var texMaskLocation = gl.getUniformLocation(program, 'u_mask'); // provide texture coordinates for the rectangle. var texCoordBuffer = gl.createBuffer(); gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer); gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 1.0]), gl.STATIC_DRAW); gl.enableVertexAttribArray(texCoordLocation); gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0); gl.uniform1i(texLayerLocation, 0); gl.uniform1i(texMaskLocation, 1); smaskCache = cache; } function composeSMask(layer, mask, properties) { var width = layer.width, height = layer.height; if (!smaskCache) { initSmaskGL(); } var cache = smaskCache,canvas = cache.canvas, gl = cache.gl; canvas.width = width; canvas.height = height; gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight); gl.uniform2f(cache.resolutionLocation, width, height); if (properties.backdrop) { gl.uniform4f(cache.resolutionLocation, properties.backdrop[0], properties.backdrop[1], properties.backdrop[2], 1); } else { gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0); } gl.uniform1i(cache.subtypeLocation, properties.subtype === 'Luminosity' ? 1 : 0); // Create a textures var texture = createTexture(gl, layer, gl.TEXTURE0); var maskTexture = createTexture(gl, mask, gl.TEXTURE1); // Create a buffer and put a single clipspace rectangle in // it (2 triangles) var buffer = gl.createBuffer(); gl.bindBuffer(gl.ARRAY_BUFFER, buffer); gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0, 0, width, 0, 0, height, 0, height, width, 0, width, height]), gl.STATIC_DRAW); gl.enableVertexAttribArray(cache.positionLocation); gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0); // draw gl.clearColor(0, 0, 0, 0); gl.enable(gl.BLEND); gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA); gl.clear(gl.COLOR_BUFFER_BIT); gl.drawArrays(gl.TRIANGLES, 0, 6); gl.flush(); gl.deleteTexture(texture); gl.deleteTexture(maskTexture); gl.deleteBuffer(buffer); return canvas; } var figuresVertexShaderCode = '\ attribute vec2 a_position; \ attribute vec3 a_color; \ \ uniform vec2 u_resolution; \ uniform vec2 u_scale; \ uniform vec2 u_offset; \ \ varying vec4 v_color; \ \ void main() { \ vec2 position = (a_position + u_offset) * u_scale; \ vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0; \ gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \ \ v_color = vec4(a_color / 255.0, 1.0); \ } '; var figuresFragmentShaderCode = '\ precision mediump float; \ \ varying vec4 v_color; \ \ void main() { \ gl_FragColor = v_color; \ } '; var figuresCache = null; function initFiguresGL() { var canvas, gl; generateGL(); canvas = currentCanvas; currentCanvas = null; gl = currentGL; currentGL = null; // setup a GLSL program var vertexShader = createVertexShader(gl, figuresVertexShaderCode); var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode); var program = createProgram(gl, [vertexShader, fragmentShader]); gl.useProgram(program); var cache = {}; cache.gl = gl; cache.canvas = canvas; cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution'); cache.scaleLocation = gl.getUniformLocation(program, 'u_scale'); cache.offsetLocation = gl.getUniformLocation(program, 'u_offset'); cache.positionLocation = gl.getAttribLocation(program, 'a_position'); cache.colorLocation = gl.getAttribLocation(program, 'a_color'); figuresCache = cache; } function drawFigures(width, height, backgroundColor, figures, context) { if (!figuresCache) { initFiguresGL(); } var cache = figuresCache, canvas = cache.canvas, gl = cache.gl; canvas.width = width; canvas.height = height; gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight); gl.uniform2f(cache.resolutionLocation, width, height); // count triangle points var count = 0; var i, ii, rows; for (i = 0, ii = figures.length; i < ii; i++) { switch (figures[i].type) { case 'lattice': rows = (figures[i].coords.length / figures[i].verticesPerRow) | 0; count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6; break; case 'triangles': count += figures[i].coords.length; break; } } // transfer data var coords = new Float32Array(count * 2); var colors = new Uint8Array(count * 3); var coordsMap = context.coords, colorsMap = context.colors; var pIndex = 0, cIndex = 0; for (i = 0, ii = figures.length; i < ii; i++) { var figure = figures[i], ps = figure.coords, cs = figure.colors; switch (figure.type) { case 'lattice': var cols = figure.verticesPerRow; rows = (ps.length / cols) | 0; for (var row = 1; row < rows; row++) { var offset = row * cols + 1; for (var col = 1; col < cols; col++, offset++) { coords[pIndex] = coordsMap[ps[offset - cols - 1]]; coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1]; coords[pIndex + 2] = coordsMap[ps[offset - cols]]; coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1]; coords[pIndex + 4] = coordsMap[ps[offset - 1]]; coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1]; colors[cIndex] = colorsMap[cs[offset - cols - 1]]; colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1]; colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2]; colors[cIndex + 3] = colorsMap[cs[offset - cols]]; colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1]; colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2]; colors[cIndex + 6] = colorsMap[cs[offset - 1]]; colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1]; colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2]; coords[pIndex + 6] = coords[pIndex + 2]; coords[pIndex + 7] = coords[pIndex + 3]; coords[pIndex + 8] = coords[pIndex + 4]; coords[pIndex + 9] = coords[pIndex + 5]; coords[pIndex + 10] = coordsMap[ps[offset]]; coords[pIndex + 11] = coordsMap[ps[offset] + 1]; colors[cIndex + 9] = colors[cIndex + 3]; colors[cIndex + 10] = colors[cIndex + 4]; colors[cIndex + 11] = colors[cIndex + 5]; colors[cIndex + 12] = colors[cIndex + 6]; colors[cIndex + 13] = colors[cIndex + 7]; colors[cIndex + 14] = colors[cIndex + 8]; colors[cIndex + 15] = colorsMap[cs[offset]]; colors[cIndex + 16] = colorsMap[cs[offset] + 1]; colors[cIndex + 17] = colorsMap[cs[offset] + 2]; pIndex += 12; cIndex += 18; } } break; case 'triangles': for (var j = 0, jj = ps.length; j < jj; j++) { coords[pIndex] = coordsMap[ps[j]]; coords[pIndex + 1] = coordsMap[ps[j] + 1]; colors[cIndex] = colorsMap[cs[j]]; colors[cIndex + 1] = colorsMap[cs[j] + 1]; colors[cIndex + 2] = colorsMap[cs[j] + 2]; pIndex += 2; cIndex += 3; } break; } } // draw if (backgroundColor) { gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255, backgroundColor[2] / 255, 1.0); } else { gl.clearColor(0, 0, 0, 0); } gl.clear(gl.COLOR_BUFFER_BIT); var coordsBuffer = gl.createBuffer(); gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer); gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW); gl.enableVertexAttribArray(cache.positionLocation); gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0); var colorsBuffer = gl.createBuffer(); gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer); gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW); gl.enableVertexAttribArray(cache.colorLocation); gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false, 0, 0); gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY); gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY); gl.drawArrays(gl.TRIANGLES, 0, count); gl.flush(); gl.deleteBuffer(coordsBuffer); gl.deleteBuffer(colorsBuffer); return canvas; } function cleanup() { if (smaskCache && smaskCache.canvas) { smaskCache.canvas.width = 0; smaskCache.canvas.height = 0; } if (figuresCache && figuresCache.canvas) { figuresCache.canvas.width = 0; figuresCache.canvas.height = 0; } smaskCache = null; figuresCache = null; } return { get isEnabled() { if (PDFJS.disableWebGL) { return false; } var enabled = false; try { generateGL(); enabled = !!currentGL; } catch (e) { } return shadow(this, 'isEnabled', enabled); }, composeSMask: composeSMask, drawFigures: drawFigures, clear: cleanup }; })(); var ShadingIRs = {}; ShadingIRs.RadialAxial = { fromIR: function RadialAxial_fromIR(raw) { var type = raw[1]; var colorStops = raw[2]; var p0 = raw[3]; var p1 = raw[4]; var r0 = raw[5]; var r1 = raw[6]; return { type: 'Pattern', getPattern: function RadialAxial_getPattern(ctx) { var grad; if (type === 'axial') { grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]); } else if (type === 'radial') { grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1); } for (var i = 0, ii = colorStops.length; i < ii; ++i) { var c = colorStops[i]; grad.addColorStop(c[0], c[1]); } return grad; } }; } }; var createMeshCanvas = (function createMeshCanvasClosure() { function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) { // Very basic Gouraud-shaded triangle rasterization algorithm. var coords = context.coords, colors = context.colors; var bytes = data.data, rowSize = data.width * 4; var tmp; if (coords[p1 + 1] > coords[p2 + 1]) { tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp; } if (coords[p2 + 1] > coords[p3 + 1]) { tmp = p2; p2 = p3; p3 = tmp; tmp = c2; c2 = c3; c3 = tmp; } if (coords[p1 + 1] > coords[p2 + 1]) { tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp; } var x1 = (coords[p1] + context.offsetX) * context.scaleX; var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY; var x2 = (coords[p2] + context.offsetX) * context.scaleX; var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY; var x3 = (coords[p3] + context.offsetX) * context.scaleX; var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY; if (y1 >= y3) { return; } var c1r = colors[c1], c1g = colors[c1 + 1], c1b = colors[c1 + 2]; var c2r = colors[c2], c2g = colors[c2 + 1], c2b = colors[c2 + 2]; var c3r = colors[c3], c3g = colors[c3 + 1], c3b = colors[c3 + 2]; var minY = Math.round(y1), maxY = Math.round(y3); var xa, car, cag, cab; var xb, cbr, cbg, cbb; var k; for (var y = minY; y <= maxY; y++) { if (y < y2) { k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2); xa = x1 - (x1 - x2) * k; car = c1r - (c1r - c2r) * k; cag = c1g - (c1g - c2g) * k; cab = c1b - (c1b - c2b) * k; } else { k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3); xa = x2 - (x2 - x3) * k; car = c2r - (c2r - c3r) * k; cag = c2g - (c2g - c3g) * k; cab = c2b - (c2b - c3b) * k; } k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3); xb = x1 - (x1 - x3) * k; cbr = c1r - (c1r - c3r) * k; cbg = c1g - (c1g - c3g) * k; cbb = c1b - (c1b - c3b) * k; var x1_ = Math.round(Math.min(xa, xb)); var x2_ = Math.round(Math.max(xa, xb)); var j = rowSize * y + x1_ * 4; for (var x = x1_; x <= x2_; x++) { k = (xa - x) / (xa - xb); k = k < 0 ? 0 : k > 1 ? 1 : k; bytes[j++] = (car - (car - cbr) * k) | 0; bytes[j++] = (cag - (cag - cbg) * k) | 0; bytes[j++] = (cab - (cab - cbb) * k) | 0; bytes[j++] = 255; } } } function drawFigure(data, figure, context) { var ps = figure.coords; var cs = figure.colors; var i, ii; switch (figure.type) { case 'lattice': var verticesPerRow = figure.verticesPerRow; var rows = Math.floor(ps.length / verticesPerRow) - 1; var cols = verticesPerRow - 1; for (i = 0; i < rows; i++) { var q = i * verticesPerRow; for (var j = 0; j < cols; j++, q++) { drawTriangle(data, context, ps[q], ps[q + 1], ps[q + verticesPerRow], cs[q], cs[q + 1], cs[q + verticesPerRow]); drawTriangle(data, context, ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow], cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]); } } break; case 'triangles': for (i = 0, ii = ps.length; i < ii; i += 3) { drawTriangle(data, context, ps[i], ps[i + 1], ps[i + 2], cs[i], cs[i + 1], cs[i + 2]); } break; default: error('illigal figure'); break; } } function createMeshCanvas(bounds, combinesScale, coords, colors, figures, backgroundColor, cachedCanvases) { // we will increase scale on some weird factor to let antialiasing take // care of "rough" edges var EXPECTED_SCALE = 1.1; // MAX_PATTERN_SIZE is used to avoid OOM situation. var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough var offsetX = Math.floor(bounds[0]); var offsetY = Math.floor(bounds[1]); var boundsWidth = Math.ceil(bounds[2]) - offsetX; var boundsHeight = Math.ceil(bounds[3]) - offsetY; var width = Math.min(Math.ceil(Math.abs(boundsWidth * combinesScale[0] * EXPECTED_SCALE)), MAX_PATTERN_SIZE); var height = Math.min(Math.ceil(Math.abs(boundsHeight * combinesScale[1] * EXPECTED_SCALE)), MAX_PATTERN_SIZE); var scaleX = boundsWidth / width; var scaleY = boundsHeight / height; var context = { coords: coords, colors: colors, offsetX: -offsetX, offsetY: -offsetY, scaleX: 1 / scaleX, scaleY: 1 / scaleY }; var canvas, tmpCanvas, i, ii; if (WebGLUtils.isEnabled) { canvas = WebGLUtils.drawFigures(width, height, backgroundColor, figures, context); // https://bugzilla.mozilla.org/show_bug.cgi?id=972126 tmpCanvas = cachedCanvases.getCanvas('mesh', width, height, false); tmpCanvas.context.drawImage(canvas, 0, 0); canvas = tmpCanvas.canvas; } else { tmpCanvas = cachedCanvases.getCanvas('mesh', width, height, false); var tmpCtx = tmpCanvas.context; var data = tmpCtx.createImageData(width, height); if (backgroundColor) { var bytes = data.data; for (i = 0, ii = bytes.length; i < ii; i += 4) { bytes[i] = backgroundColor[0]; bytes[i + 1] = backgroundColor[1]; bytes[i + 2] = backgroundColor[2]; bytes[i + 3] = 255; } } for (i = 0; i < figures.length; i++) { drawFigure(data, figures[i], context); } tmpCtx.putImageData(data, 0, 0); canvas = tmpCanvas.canvas; } return {canvas: canvas, offsetX: offsetX, offsetY: offsetY, scaleX: scaleX, scaleY: scaleY}; } return createMeshCanvas; })(); ShadingIRs.Mesh = { fromIR: function Mesh_fromIR(raw) { //var type = raw[1]; var coords = raw[2]; var colors = raw[3]; var figures = raw[4]; var bounds = raw[5]; var matrix = raw[6]; //var bbox = raw[7]; var background = raw[8]; return { type: 'Pattern', getPattern: function Mesh_getPattern(ctx, owner, shadingFill) { var scale; if (shadingFill) { scale = Util.singularValueDecompose2dScale(ctx.mozCurrentTransform); } else { // Obtain scale from matrix and current transformation matrix. scale = Util.singularValueDecompose2dScale(owner.baseTransform); if (matrix) { var matrixScale = Util.singularValueDecompose2dScale(matrix); scale = [scale[0] * matrixScale[0], scale[1] * matrixScale[1]]; } } // Rasterizing on the main thread since sending/queue large canvases // might cause OOM. var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords, colors, figures, shadingFill ? null : background, owner.cachedCanvases); if (!shadingFill) { ctx.setTransform.apply(ctx, owner.baseTransform); if (matrix) { ctx.transform.apply(ctx, matrix); } } ctx.translate(temporaryPatternCanvas.offsetX, temporaryPatternCanvas.offsetY); ctx.scale(temporaryPatternCanvas.scaleX, temporaryPatternCanvas.scaleY); return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat'); } }; } }; ShadingIRs.Dummy = { fromIR: function Dummy_fromIR() { return { type: 'Pattern', getPattern: function Dummy_fromIR_getPattern() { return 'hotpink'; } }; } }; function getShadingPatternFromIR(raw) { var shadingIR = ShadingIRs[raw[0]]; if (!shadingIR) { error('Unknown IR type: ' + raw[0]); } return shadingIR.fromIR(raw); } var TilingPattern = (function TilingPatternClosure() { var PaintType = { COLORED: 1, UNCOLORED: 2 }; var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough function TilingPattern(IR, color, ctx, objs, commonObjs, baseTransform) { this.operatorList = IR[2]; this.matrix = IR[3] || [1, 0, 0, 1, 0, 0]; this.bbox = IR[4]; this.xstep = IR[5]; this.ystep = IR[6]; this.paintType = IR[7]; this.tilingType = IR[8]; this.color = color; this.objs = objs; this.commonObjs = commonObjs; this.baseTransform = baseTransform; this.type = 'Pattern'; this.ctx = ctx; } TilingPattern.prototype = { createPatternCanvas: function TilinPattern_createPatternCanvas(owner) { var operatorList = this.operatorList; var bbox = this.bbox; var xstep = this.xstep; var ystep = this.ystep; var paintType = this.paintType; var tilingType = this.tilingType; var color = this.color; var objs = this.objs; var commonObjs = this.commonObjs; info('TilingType: ' + tilingType); var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3]; var topLeft = [x0, y0]; // we want the canvas to be as large as the step size var botRight = [x0 + xstep, y0 + ystep]; var width = botRight[0] - topLeft[0]; var height = botRight[1] - topLeft[1]; // Obtain scale from matrix and current transformation matrix. var matrixScale = Util.singularValueDecompose2dScale(this.matrix); var curMatrixScale = Util.singularValueDecompose2dScale( this.baseTransform); var combinedScale = [matrixScale[0] * curMatrixScale[0], matrixScale[1] * curMatrixScale[1]]; // MAX_PATTERN_SIZE is used to avoid OOM situation. // Use width and height values that are as close as possible to the end // result when the pattern is used. Too low value makes the pattern look // blurry. Too large value makes it look too crispy. width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])), MAX_PATTERN_SIZE); height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])), MAX_PATTERN_SIZE); var tmpCanvas = owner.cachedCanvases.getCanvas('pattern', width, height, true); var tmpCtx = tmpCanvas.context; var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs); graphics.groupLevel = owner.groupLevel; this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color); this.setScale(width, height, xstep, ystep); this.transformToScale(graphics); // transform coordinates to pattern space var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]]; graphics.transform.apply(graphics, tmpTranslate); this.clipBbox(graphics, bbox, x0, y0, x1, y1); graphics.executeOperatorList(operatorList); return tmpCanvas.canvas; }, setScale: function TilingPattern_setScale(width, height, xstep, ystep) { this.scale = [width / xstep, height / ystep]; }, transformToScale: function TilingPattern_transformToScale(graphics) { var scale = this.scale; var tmpScale = [scale[0], 0, 0, scale[1], 0, 0]; graphics.transform.apply(graphics, tmpScale); }, scaleToContext: function TilingPattern_scaleToContext() { var scale = this.scale; this.ctx.scale(1 / scale[0], 1 / scale[1]); }, clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) { if (bbox && isArray(bbox) && bbox.length === 4) { var bboxWidth = x1 - x0; var bboxHeight = y1 - y0; graphics.ctx.rect(x0, y0, bboxWidth, bboxHeight); graphics.clip(); graphics.endPath(); } }, setFillAndStrokeStyleToContext: function setFillAndStrokeStyleToContext(context, paintType, color) { switch (paintType) { case PaintType.COLORED: var ctx = this.ctx; context.fillStyle = ctx.fillStyle; context.strokeStyle = ctx.strokeStyle; break; case PaintType.UNCOLORED: var cssColor = Util.makeCssRgb(color[0], color[1], color[2]); context.fillStyle = cssColor; context.strokeStyle = cssColor; break; default: error('Unsupported paint type: ' + paintType); } }, getPattern: function TilingPattern_getPattern(ctx, owner) { var temporaryPatternCanvas = this.createPatternCanvas(owner); ctx = this.ctx; ctx.setTransform.apply(ctx, this.baseTransform); ctx.transform.apply(ctx, this.matrix); this.scaleToContext(); return ctx.createPattern(temporaryPatternCanvas, 'repeat'); } }; return TilingPattern; })(); function FontLoader(docId) { this.docId = docId; this.styleElement = null; this.nativeFontFaces = []; this.loadTestFontId = 0; this.loadingContext = { requests: [], nextRequestId: 0 }; } FontLoader.prototype = { insertRule: function fontLoaderInsertRule(rule) { var styleElement = this.styleElement; if (!styleElement) { styleElement = this.styleElement = document.createElement('style'); styleElement.id = 'PDFJS_FONT_STYLE_TAG_' + this.docId; document.documentElement.getElementsByTagName('head')[0].appendChild( styleElement); } var styleSheet = styleElement.sheet; styleSheet.insertRule(rule, styleSheet.cssRules.length); }, clear: function fontLoaderClear() { var styleElement = this.styleElement; if (styleElement) { styleElement.parentNode.removeChild(styleElement); styleElement = this.styleElement = null; } this.nativeFontFaces.forEach(function(nativeFontFace) { document.fonts.delete(nativeFontFace); }); this.nativeFontFaces.length = 0; }, get loadTestFont() { // This is a CFF font with 1 glyph for '.' that fills its entire width and // height. return shadow(this, 'loadTestFont', atob( 'T1RUTwALAIAAAwAwQ0ZGIDHtZg4AAAOYAAAAgUZGVE1lkzZwAAAEHAAAABxHREVGABQAFQ' + 'AABDgAAAAeT1MvMlYNYwkAAAEgAAAAYGNtYXABDQLUAAACNAAAAUJoZWFk/xVFDQAAALwA' + 'AAA2aGhlYQdkA+oAAAD0AAAAJGhtdHgD6AAAAAAEWAAAAAZtYXhwAAJQAAAAARgAAAAGbm' + 'FtZVjmdH4AAAGAAAAAsXBvc3T/hgAzAAADeAAAACAAAQAAAAEAALZRFsRfDzz1AAsD6AAA' + 'AADOBOTLAAAAAM4KHDwAAAAAA+gDIQAAAAgAAgAAAAAAAAABAAADIQAAAFoD6AAAAAAD6A' + 'ABAAAAAAAAAAAAAAAAAAAAAQAAUAAAAgAAAAQD6AH0AAUAAAKKArwAAACMAooCvAAAAeAA' + 'MQECAAACAAYJAAAAAAAAAAAAAQAAAAAAAAAAAAAAAFBmRWQAwAAuAC4DIP84AFoDIQAAAA' + 'AAAQAAAAAAAAAAACAAIAABAAAADgCuAAEAAAAAAAAAAQAAAAEAAAAAAAEAAQAAAAEAAAAA' + 'AAIAAQAAAAEAAAAAAAMAAQAAAAEAAAAAAAQAAQAAAAEAAAAAAAUAAQAAAAEAAAAAAAYAAQ' + 'AAAAMAAQQJAAAAAgABAAMAAQQJAAEAAgABAAMAAQQJAAIAAgABAAMAAQQJAAMAAgABAAMA' + 'AQQJAAQAAgABAAMAAQQJAAUAAgABAAMAAQQJAAYAAgABWABYAAAAAAAAAwAAAAMAAAAcAA' + 'EAAAAAADwAAwABAAAAHAAEACAAAAAEAAQAAQAAAC7//wAAAC7////TAAEAAAAAAAABBgAA' + 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAA' + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAA' + 'AAAAD/gwAyAAAAAQAAAAAAAAAAAAAAAAAAAAABAAQEAAEBAQJYAAEBASH4DwD4GwHEAvgc' + 'A/gXBIwMAYuL+nz5tQXkD5j3CBLnEQACAQEBIVhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWF' + 'hYWFhYWFhYAAABAQAADwACAQEEE/t3Dov6fAH6fAT+fPp8+nwHDosMCvm1Cvm1DAz6fBQA' + 'AAAAAAABAAAAAMmJbzEAAAAAzgTjFQAAAADOBOQpAAEAAAAAAAAADAAUAAQAAAABAAAAAg' + 'ABAAAAAAAAAAAD6AAAAAAAAA==' )); }, addNativeFontFace: function fontLoader_addNativeFontFace(nativeFontFace) { this.nativeFontFaces.push(nativeFontFace); document.fonts.add(nativeFontFace); }, bind: function fontLoaderBind(fonts, callback) { assert(!isWorker, 'bind() shall be called from main thread'); var rules = []; var fontsToLoad = []; var fontLoadPromises = []; var getNativeFontPromise = function(nativeFontFace) { // Return a promise that is always fulfilled, even when the font fails to // load. return nativeFontFace.loaded.catch(function(e) { warn('Failed to load font "' + nativeFontFace.family + '": ' + e); }); }; for (var i = 0, ii = fonts.length; i < ii; i++) { var font = fonts[i]; // Add the font to the DOM only once or skip if the font // is already loaded. if (font.attached || font.loading === false) { continue; } font.attached = true; if (FontLoader.isFontLoadingAPISupported) { var nativeFontFace = font.createNativeFontFace(); if (nativeFontFace) { this.addNativeFontFace(nativeFontFace); fontLoadPromises.push(getNativeFontPromise(nativeFontFace)); } } else { var rule = font.createFontFaceRule(); if (rule) { this.insertRule(rule); rules.push(rule); fontsToLoad.push(font); } } } var request = this.queueLoadingCallback(callback); if (FontLoader.isFontLoadingAPISupported) { Promise.all(fontLoadPromises).then(function() { request.complete(); }); } else if (rules.length > 0 && !FontLoader.isSyncFontLoadingSupported) { this.prepareFontLoadEvent(rules, fontsToLoad, request); } else { request.complete(); } }, queueLoadingCallback: function FontLoader_queueLoadingCallback(callback) { function LoadLoader_completeRequest() { assert(!request.end, 'completeRequest() cannot be called twice'); request.end = Date.now(); // sending all completed requests in order how they were queued while (context.requests.length > 0 && context.requests[0].end) { var otherRequest = context.requests.shift(); setTimeout(otherRequest.callback, 0); } } var context = this.loadingContext; var requestId = 'pdfjs-font-loading-' + (context.nextRequestId++); var request = { id: requestId, complete: LoadLoader_completeRequest, callback: callback, started: Date.now() }; context.requests.push(request); return request; }, prepareFontLoadEvent: function fontLoaderPrepareFontLoadEvent(rules, fonts, request) { /** Hack begin */ // There's currently no event when a font has finished downloading so the // following code is a dirty hack to 'guess' when a font is // ready. It's assumed fonts are loaded in order, so add a known test // font after the desired fonts and then test for the loading of that // test font. function int32(data, offset) { return (data.charCodeAt(offset) << 24) | (data.charCodeAt(offset + 1) << 16) | (data.charCodeAt(offset + 2) << 8) | (data.charCodeAt(offset + 3) & 0xff); } function spliceString(s, offset, remove, insert) { var chunk1 = s.substr(0, offset); var chunk2 = s.substr(offset + remove); return chunk1 + insert + chunk2; } var i, ii; var canvas = document.createElement('canvas'); canvas.width = 1; canvas.height = 1; var ctx = canvas.getContext('2d'); var called = 0; function isFontReady(name, callback) { called++; // With setTimeout clamping this gives the font ~100ms to load. if(called > 30) { warn('Load test font never loaded.'); callback(); return; } ctx.font = '30px ' + name; ctx.fillText('.', 0, 20); var imageData = ctx.getImageData(0, 0, 1, 1); if (imageData.data[3] > 0) { callback(); return; } setTimeout(isFontReady.bind(null, name, callback)); } var loadTestFontId = 'lt' + Date.now() + this.loadTestFontId++; // Chromium seems to cache fonts based on a hash of the actual font data, // so the font must be modified for each load test else it will appear to // be loaded already. // TODO: This could maybe be made faster by avoiding the btoa of the full // font by splitting it in chunks before hand and padding the font id. var data = this.loadTestFont; var COMMENT_OFFSET = 976; // has to be on 4 byte boundary (for checksum) data = spliceString(data, COMMENT_OFFSET, loadTestFontId.length, loadTestFontId); // CFF checksum is important for IE, adjusting it var CFF_CHECKSUM_OFFSET = 16; var XXXX_VALUE = 0x58585858; // the "comment" filled with 'X' var checksum = int32(data, CFF_CHECKSUM_OFFSET); for (i = 0, ii = loadTestFontId.length - 3; i < ii; i += 4) { checksum = (checksum - XXXX_VALUE + int32(loadTestFontId, i)) | 0; } if (i < loadTestFontId.length) { // align to 4 bytes boundary checksum = (checksum - XXXX_VALUE + int32(loadTestFontId + 'XXX', i)) | 0; } data = spliceString(data, CFF_CHECKSUM_OFFSET, 4, string32(checksum)); var url = 'url(data:font/opentype;base64,' + btoa(data) + ');'; var rule = '@font-face { font-family:"' + loadTestFontId + '";src:' + url + '}'; this.insertRule(rule); var names = []; for (i = 0, ii = fonts.length; i < ii; i++) { names.push(fonts[i].loadedName); } names.push(loadTestFontId); var div = document.createElement('div'); div.setAttribute('style', 'visibility: hidden;' + 'width: 10px; height: 10px;' + 'position: absolute; top: 0px; left: 0px;'); for (i = 0, ii = names.length; i < ii; ++i) { var span = document.createElement('span'); span.textContent = 'Hi'; span.style.fontFamily = names[i]; div.appendChild(span); } document.body.appendChild(div); isFontReady(loadTestFontId, function() { document.body.removeChild(div); request.complete(); }); /** Hack end */ } }; FontLoader.isFontLoadingAPISupported = (!isWorker && typeof document !== 'undefined' && !!document.fonts); Object.defineProperty(FontLoader, 'isSyncFontLoadingSupported', { get: function () { var supported = false; // User agent string sniffing is bad, but there is no reliable way to tell // if font is fully loaded and ready to be used with canvas. var userAgent = window.navigator.userAgent; var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(userAgent); if (m && m[1] >= 14) { supported = true; } // TODO other browsers if (userAgent === 'node') { supported = true; } return shadow(FontLoader, 'isSyncFontLoadingSupported', supported); }, enumerable: true, configurable: true }); var FontFaceObject = (function FontFaceObjectClosure() { function FontFaceObject(translatedData) { this.compiledGlyphs = {}; // importing translated data for (var i in translatedData) { this[i] = translatedData[i]; } } Object.defineProperty(FontFaceObject, 'isEvalSupported', { get: function () { var evalSupport = false; if (PDFJS.isEvalSupported) { try { /* jshint evil: true */ new Function(''); evalSupport = true; } catch (e) {} } return shadow(this, 'isEvalSupported', evalSupport); }, enumerable: true, configurable: true }); FontFaceObject.prototype = { createNativeFontFace: function FontFaceObject_createNativeFontFace() { if (!this.data) { return null; } if (PDFJS.disableFontFace) { this.disableFontFace = true; return null; } var nativeFontFace = new FontFace(this.loadedName, this.data, {}); if (PDFJS.pdfBug && 'FontInspector' in globalScope && globalScope['FontInspector'].enabled) { globalScope['FontInspector'].fontAdded(this); } return nativeFontFace; }, createFontFaceRule: function FontFaceObject_createFontFaceRule() { if (!this.data) { return null; } if (PDFJS.disableFontFace) { this.disableFontFace = true; return null; } var data = bytesToString(new Uint8Array(this.data)); var fontName = this.loadedName; // Add the font-face rule to the document var url = ('url(data:' + this.mimetype + ';base64,' + window.btoa(data) + ');'); var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}'; if (PDFJS.pdfBug && 'FontInspector' in globalScope && globalScope['FontInspector'].enabled) { globalScope['FontInspector'].fontAdded(this, url); } return rule; }, getPathGenerator: function FontFaceObject_getPathGenerator(objs, character) { if (!(character in this.compiledGlyphs)) { var cmds = objs.get(this.loadedName + '_path_' + character); var current, i, len; // If we can, compile cmds into JS for MAXIMUM SPEED if (FontFaceObject.isEvalSupported) { var args, js = ''; for (i = 0, len = cmds.length; i < len; i++) { current = cmds[i]; if (current.args !== undefined) { args = current.args.join(','); } else { args = ''; } js += 'c.' + current.cmd + '(' + args + ');\n'; } /* jshint -W054 */ this.compiledGlyphs[character] = new Function('c', 'size', js); } else { // But fall back on using Function.prototype.apply() if we're // blocked from using eval() for whatever reason (like CSP policies) this.compiledGlyphs[character] = function(c, size) { for (i = 0, len = cmds.length; i < len; i++) { current = cmds[i]; if (current.cmd === 'scale') { current.args = [size, -size]; } c[current.cmd].apply(c, current.args); } }; } } return this.compiledGlyphs[character]; } }; return FontFaceObject; })(); /** * Optimised CSS custom property getter/setter. * @class */ var CustomStyle = (function CustomStyleClosure() { // As noted on: http://www.zachstronaut.com/posts/2009/02/17/ // animate-css-transforms-firefox-webkit.html // in some versions of IE9 it is critical that ms appear in this list // before Moz var prefixes = ['ms', 'Moz', 'Webkit', 'O']; var _cache = {}; function CustomStyle() {} CustomStyle.getProp = function get(propName, element) { // check cache only when no element is given if (arguments.length === 1 && typeof _cache[propName] === 'string') { return _cache[propName]; } element = element || document.documentElement; var style = element.style, prefixed, uPropName; // test standard property first if (typeof style[propName] === 'string') { return (_cache[propName] = propName); } // capitalize uPropName = propName.charAt(0).toUpperCase() + propName.slice(1); // test vendor specific properties for (var i = 0, l = prefixes.length; i < l; i++) { prefixed = prefixes[i] + uPropName; if (typeof style[prefixed] === 'string') { return (_cache[propName] = prefixed); } } //if all fails then set to undefined return (_cache[propName] = 'undefined'); }; CustomStyle.setProp = function set(propName, element, str) { var prop = this.getProp(propName); if (prop !== 'undefined') { element.style[prop] = str; } }; return CustomStyle; })(); PDFJS.CustomStyle = CustomStyle; var ANNOT_MIN_SIZE = 10; // px var AnnotationLayer = (function AnnotationLayerClosure() { // TODO(mack): This dupes some of the logic in CanvasGraphics.setFont() function setTextStyles(element, item, fontObj) { var style = element.style; style.fontSize = item.fontSize + 'px'; style.direction = item.fontDirection < 0 ? 'rtl': 'ltr'; if (!fontObj) { return; } style.fontWeight = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') : (fontObj.bold ? 'bold' : 'normal'); style.fontStyle = fontObj.italic ? 'italic' : 'normal'; var fontName = fontObj.loadedName; var fontFamily = fontName ? '"' + fontName + '", ' : ''; // Use a reasonable default font if the font doesn't specify a fallback var fallbackName = fontObj.fallbackName || 'Helvetica, sans-serif'; style.fontFamily = fontFamily + fallbackName; } function getContainer(data, page, viewport) { var container = document.createElement('section'); var width = data.rect[2] - data.rect[0]; var height = data.rect[3] - data.rect[1]; container.setAttribute('data-annotation-id', data.id); data.rect = Util.normalizeRect([ data.rect[0], page.view[3] - data.rect[1] + page.view[1], data.rect[2], page.view[3] - data.rect[3] + page.view[1] ]); CustomStyle.setProp('transform', container, 'matrix(' + viewport.transform.join(',') + ')'); CustomStyle.setProp('transformOrigin', container, -data.rect[0] + 'px ' + -data.rect[1] + 'px'); if (data.borderStyle.width > 0) { container.style.borderWidth = data.borderStyle.width + 'px'; if (data.borderStyle.style !== AnnotationBorderStyleType.UNDERLINE) { // Underline styles only have a bottom border, so we do not need // to adjust for all borders. This yields a similar result as // Adobe Acrobat/Reader. width = width - 2 * data.borderStyle.width; height = height - 2 * data.borderStyle.width; } var horizontalRadius = data.borderStyle.horizontalCornerRadius; var verticalRadius = data.borderStyle.verticalCornerRadius; if (horizontalRadius > 0 || verticalRadius > 0) { var radius = horizontalRadius + 'px / ' + verticalRadius + 'px'; CustomStyle.setProp('borderRadius', container, radius); } switch (data.borderStyle.style) { case AnnotationBorderStyleType.SOLID: container.style.borderStyle = 'solid'; break; case AnnotationBorderStyleType.DASHED: container.style.borderStyle = 'dashed'; break; case AnnotationBorderStyleType.BEVELED: warn('Unimplemented border style: beveled'); break; case AnnotationBorderStyleType.INSET: warn('Unimplemented border style: inset'); break; case AnnotationBorderStyleType.UNDERLINE: container.style.borderBottomStyle = 'solid'; break; default: break; } if (data.color) { container.style.borderColor = Util.makeCssRgb(data.color[0] | 0, data.color[1] | 0, data.color[2] | 0); } else { // Transparent (invisible) border, so do not draw it at all. container.style.borderWidth = 0; } } container.style.left = data.rect[0] + 'px'; container.style.top = data.rect[1] + 'px'; container.style.width = width + 'px'; container.style.height = height + 'px'; return container; } function getHtmlElementForTextWidgetAnnotation(item, page) { var element = document.createElement('div'); var width = item.rect[2] - item.rect[0]; var height = item.rect[3] - item.rect[1]; element.style.width = width + 'px'; element.style.height = height + 'px'; element.style.display = 'table'; var content = document.createElement('div'); content.textContent = item.fieldValue; var textAlignment = item.textAlignment; content.style.textAlign = ['left', 'center', 'right'][textAlignment]; content.style.verticalAlign = 'middle'; content.style.display = 'table-cell'; var fontObj = item.fontRefName ? page.commonObjs.getData(item.fontRefName) : null; setTextStyles(content, item, fontObj); element.appendChild(content); return element; } function getHtmlElementForTextAnnotation(item, page, viewport) { var rect = item.rect; // sanity check because of OOo-generated PDFs if ((rect[3] - rect[1]) < ANNOT_MIN_SIZE) { rect[3] = rect[1] + ANNOT_MIN_SIZE; } if ((rect[2] - rect[0]) < ANNOT_MIN_SIZE) { rect[2] = rect[0] + (rect[3] - rect[1]); // make it square } var container = getContainer(item, page, viewport); container.className = 'annotText'; var image = document.createElement('img'); image.style.height = container.style.height; image.style.width = container.style.width; var iconName = item.name; image.src = PDFJS.imageResourcesPath + 'annotation-' + iconName.toLowerCase() + '.svg'; image.alt = '[{{type}} Annotation]'; image.dataset.l10nId = 'text_annotation_type'; image.dataset.l10nArgs = JSON.stringify({type: iconName}); var contentWrapper = document.createElement('div'); contentWrapper.className = 'annotTextContentWrapper'; contentWrapper.style.left = Math.floor(rect[2] - rect[0] + 5) + 'px'; contentWrapper.style.top = '-10px'; var content = document.createElement('div'); content.className = 'annotTextContent'; content.setAttribute('hidden', true); var i, ii; if (item.hasBgColor && item.color) { var color = item.color; // Enlighten the color (70%) var BACKGROUND_ENLIGHT = 0.7; var r = BACKGROUND_ENLIGHT * (255 - color[0]) + color[0]; var g = BACKGROUND_ENLIGHT * (255 - color[1]) + color[1]; var b = BACKGROUND_ENLIGHT * (255 - color[2]) + color[2]; content.style.backgroundColor = Util.makeCssRgb(r | 0, g | 0, b | 0); } var title = document.createElement('h1'); var text = document.createElement('p'); title.textContent = item.title; if (!item.content && !item.title) { content.setAttribute('hidden', true); } else { var e = document.createElement('span'); var lines = item.content.split(/(?:\r\n?|\n)/); for (i = 0, ii = lines.length; i < ii; ++i) { var line = lines[i]; e.appendChild(document.createTextNode(line)); if (i < (ii - 1)) { e.appendChild(document.createElement('br')); } } text.appendChild(e); var pinned = false; var showAnnotation = function showAnnotation(pin) { if (pin) { pinned = true; } if (content.hasAttribute('hidden')) { container.style.zIndex += 1; content.removeAttribute('hidden'); } }; var hideAnnotation = function hideAnnotation(unpin) { if (unpin) { pinned = false; } if (!content.hasAttribute('hidden') && !pinned) { container.style.zIndex -= 1; content.setAttribute('hidden', true); } }; var toggleAnnotation = function toggleAnnotation() { if (pinned) { hideAnnotation(true); } else { showAnnotation(true); } }; image.addEventListener('click', function image_clickHandler() { toggleAnnotation(); }, false); image.addEventListener('mouseover', function image_mouseOverHandler() { showAnnotation(); }, false); image.addEventListener('mouseout', function image_mouseOutHandler() { hideAnnotation(); }, false); content.addEventListener('click', function content_clickHandler() { hideAnnotation(true); }, false); } content.appendChild(title); content.appendChild(text); contentWrapper.appendChild(content); container.appendChild(image); container.appendChild(contentWrapper); return container; } function getHtmlElementForLinkAnnotation(item, page, viewport, linkService) { function bindLink(link, dest) { link.href = linkService.getDestinationHash(dest); link.onclick = function annotationsLayerBuilderLinksOnclick() { if (dest) { linkService.navigateTo(dest); } return false; }; if (dest) { link.className = 'internalLink'; } } function bindNamedAction(link, action) { link.href = linkService.getAnchorUrl(''); link.onclick = function annotationsLayerBuilderNamedActionOnClick() { linkService.executeNamedAction(action); return false; }; link.className = 'internalLink'; } var container = getContainer(item, page, viewport); container.className = 'annotLink'; var link = document.createElement('a'); link.href = link.title = item.url || ''; if (item.url && isExternalLinkTargetSet()) { link.target = LinkTargetStringMap[PDFJS.externalLinkTarget]; } if (!item.url) { if (item.action) { bindNamedAction(link, item.action); } else { bindLink(link, ('dest' in item) ? item.dest : null); } } container.appendChild(link); return container; } function getHtmlElement(data, page, viewport, linkService) { switch (data.annotationType) { case AnnotationType.WIDGET: return getHtmlElementForTextWidgetAnnotation(data, page); case AnnotationType.TEXT: return getHtmlElementForTextAnnotation(data, page, viewport); case AnnotationType.LINK: return getHtmlElementForLinkAnnotation(data, page, viewport, linkService); default: throw new Error('Unsupported annotationType: ' + data.annotationType); } } function render(viewport, div, annotations, page, linkService) { for (var i = 0, ii = annotations.length; i < ii; i++) { var data = annotations[i]; if (!data || !data.hasHtml) { continue; } var element = getHtmlElement(data, page, viewport, linkService); div.appendChild(element); } } function update(viewport, div, annotations) { for (var i = 0, ii = annotations.length; i < ii; i++) { var data = annotations[i]; var element = div.querySelector( '[data-annotation-id="' + data.id + '"]'); if (element) { CustomStyle.setProp('transform', element, 'matrix(' + viewport.transform.join(',') + ')'); } } div.removeAttribute('hidden'); } return { render: render, update: update }; })(); PDFJS.AnnotationLayer = AnnotationLayer; /** * Text layer render parameters. * * @typedef {Object} TextLayerRenderParameters * @property {TextContent} textContent - Text content to render (the object is * returned by the page's getTextContent() method). * @property {HTMLElement} container - HTML element that will contain text runs. * @property {PDFJS.PageViewport} viewport - The target viewport to properly * layout the text runs. * @property {Array} textDivs - (optional) HTML elements that are correspond * the text items of the textContent input. This is output and shall be * initially be set to empty array. * @property {number} timeout - (optional) Delay in milliseconds before * rendering of the text runs occurs. */ var renderTextLayer = (function renderTextLayerClosure() { var MAX_TEXT_DIVS_TO_RENDER = 100000; var NonWhitespaceRegexp = /\S/; function isAllWhitespace(str) { return !NonWhitespaceRegexp.test(str); } function appendText(textDivs, viewport, geom, styles) { var style = styles[geom.fontName]; var textDiv = document.createElement('div'); textDivs.push(textDiv); if (isAllWhitespace(geom.str)) { textDiv.dataset.isWhitespace = true; return; } var tx = PDFJS.Util.transform(viewport.transform, geom.transform); var angle = Math.atan2(tx[1], tx[0]); if (style.vertical) { angle += Math.PI / 2; } var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3])); var fontAscent = fontHeight; if (style.ascent) { fontAscent = style.ascent * fontAscent; } else if (style.descent) { fontAscent = (1 + style.descent) * fontAscent; } var left; var top; if (angle === 0) { left = tx[4]; top = tx[5] - fontAscent; } else { left = tx[4] + (fontAscent * Math.sin(angle)); top = tx[5] - (fontAscent * Math.cos(angle)); } textDiv.style.left = left + 'px'; textDiv.style.top = top + 'px'; textDiv.style.fontSize = fontHeight + 'px'; textDiv.style.fontFamily = style.fontFamily; textDiv.textContent = geom.str; // |fontName| is only used by the Font Inspector. This test will succeed // when e.g. the Font Inspector is off but the Stepper is on, but it's // not worth the effort to do a more accurate test. if (PDFJS.pdfBug) { textDiv.dataset.fontName = geom.fontName; } // Storing into dataset will convert number into string. if (angle !== 0) { textDiv.dataset.angle = angle * (180 / Math.PI); } // We don't bother scaling single-char text divs, because it has very // little effect on text highlighting. This makes scrolling on docs with // lots of such divs a lot faster. if (geom.str.length > 1) { if (style.vertical) { textDiv.dataset.canvasWidth = geom.height * viewport.scale; } else { textDiv.dataset.canvasWidth = geom.width * viewport.scale; } } } function render(task) { if (task._canceled) { return; } var textLayerFrag = task._container; var textDivs = task._textDivs; var capability = task._capability; var textDivsLength = textDivs.length; // No point in rendering many divs as it would make the browser // unusable even after the divs are rendered. if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) { capability.resolve(); return; } var canvas = document.createElement('canvas'); canvas.mozOpaque = true; var ctx = canvas.getContext('2d', {alpha: false}); var lastFontSize; var lastFontFamily; for (var i = 0; i < textDivsLength; i++) { var textDiv = textDivs[i]; if (textDiv.dataset.isWhitespace !== undefined) { continue; } var fontSize = textDiv.style.fontSize; var fontFamily = textDiv.style.fontFamily; // Only build font string and set to context if different from last. if (fontSize !== lastFontSize || fontFamily !== lastFontFamily) { ctx.font = fontSize + ' ' + fontFamily; lastFontSize = fontSize; lastFontFamily = fontFamily; } var width = ctx.measureText(textDiv.textContent).width; if (width > 0) { textLayerFrag.appendChild(textDiv); var transform; if (textDiv.dataset.canvasWidth !== undefined) { // Dataset values come of type string. var textScale = textDiv.dataset.canvasWidth / width; transform = 'scaleX(' + textScale + ')'; } else { transform = ''; } var rotation = textDiv.dataset.angle; if (rotation) { transform = 'rotate(' + rotation + 'deg) ' + transform; } if (transform) { PDFJS.CustomStyle.setProp('transform' , textDiv, transform); } } } capability.resolve(); } /** * Text layer rendering task. * * @param {TextContent} textContent * @param {HTMLElement} container * @param {PDFJS.PageViewport} viewport * @param {Array} textDivs * @private */ function TextLayerRenderTask(textContent, container, viewport, textDivs) { this._textContent = textContent; this._container = container; this._viewport = viewport; textDivs = textDivs || []; this._textDivs = textDivs; this._canceled = false; this._capability = createPromiseCapability(); this._renderTimer = null; } TextLayerRenderTask.prototype = { get promise() { return this._capability.promise; }, cancel: function TextLayer_cancel() { this._canceled = true; if (this._renderTimer !== null) { clearTimeout(this._renderTimer); this._renderTimer = null; } this._capability.reject('canceled'); }, _render: function TextLayer_render(timeout) { var textItems = this._textContent.items; var styles = this._textContent.styles; var textDivs = this._textDivs; var viewport = this._viewport; for (var i = 0, len = textItems.length; i < len; i++) { appendText(textDivs, viewport, textItems[i], styles); } if (!timeout) { // Render right away render(this); } else { // Schedule var self = this; this._renderTimer = setTimeout(function() { render(self); self._renderTimer = null; }, timeout); } } }; /** * Starts rendering of the text layer. * * @param {TextLayerRenderParameters} renderParameters * @returns {TextLayerRenderTask} */ function renderTextLayer(renderParameters) { var task = new TextLayerRenderTask(renderParameters.textContent, renderParameters.container, renderParameters.viewport, renderParameters.textDivs); task._render(renderParameters.timeout); return task; } return renderTextLayer; })(); PDFJS.renderTextLayer = renderTextLayer; var SVG_DEFAULTS = { fontStyle: 'normal', fontWeight: 'normal', fillColor: '#000000' }; var convertImgDataToPng = (function convertImgDataToPngClosure() { var PNG_HEADER = new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]); var CHUNK_WRAPPER_SIZE = 12; var crcTable = new Int32Array(256); for (var i = 0; i < 256; i++) { var c = i; for (var h = 0; h < 8; h++) { if (c & 1) { c = 0xedB88320 ^ ((c >> 1) & 0x7fffffff); } else { c = (c >> 1) & 0x7fffffff; } } crcTable[i] = c; } function crc32(data, start, end) { var crc = -1; for (var i = start; i < end; i++) { var a = (crc ^ data[i]) & 0xff; var b = crcTable[a]; crc = (crc >>> 8) ^ b; } return crc ^ -1; } function writePngChunk(type, body, data, offset) { var p = offset; var len = body.length; data[p] = len >> 24 & 0xff; data[p + 1] = len >> 16 & 0xff; data[p + 2] = len >> 8 & 0xff; data[p + 3] = len & 0xff; p += 4; data[p] = type.charCodeAt(0) & 0xff; data[p + 1] = type.charCodeAt(1) & 0xff; data[p + 2] = type.charCodeAt(2) & 0xff; data[p + 3] = type.charCodeAt(3) & 0xff; p += 4; data.set(body, p); p += body.length; var crc = crc32(data, offset + 4, p); data[p] = crc >> 24 & 0xff; data[p + 1] = crc >> 16 & 0xff; data[p + 2] = crc >> 8 & 0xff; data[p + 3] = crc & 0xff; } function adler32(data, start, end) { var a = 1; var b = 0; for (var i = start; i < end; ++i) { a = (a + (data[i] & 0xff)) % 65521; b = (b + a) % 65521; } return (b << 16) | a; } function encode(imgData, kind) { var width = imgData.width; var height = imgData.height; var bitDepth, colorType, lineSize; var bytes = imgData.data; switch (kind) { case ImageKind.GRAYSCALE_1BPP: colorType = 0; bitDepth = 1; lineSize = (width + 7) >> 3; break; case ImageKind.RGB_24BPP: colorType = 2; bitDepth = 8; lineSize = width * 3; break; case ImageKind.RGBA_32BPP: colorType = 6; bitDepth = 8; lineSize = width * 4; break; default: throw new Error('invalid format'); } // prefix every row with predictor 0 var literals = new Uint8Array((1 + lineSize) * height); var offsetLiterals = 0, offsetBytes = 0; var y, i; for (y = 0; y < height; ++y) { literals[offsetLiterals++] = 0; // no prediction literals.set(bytes.subarray(offsetBytes, offsetBytes + lineSize), offsetLiterals); offsetBytes += lineSize; offsetLiterals += lineSize; } if (kind === ImageKind.GRAYSCALE_1BPP) { // inverting for B/W offsetLiterals = 0; for (y = 0; y < height; y++) { offsetLiterals++; // skipping predictor for (i = 0; i < lineSize; i++) { literals[offsetLiterals++] ^= 0xFF; } } } var ihdr = new Uint8Array([ width >> 24 & 0xff, width >> 16 & 0xff, width >> 8 & 0xff, width & 0xff, height >> 24 & 0xff, height >> 16 & 0xff, height >> 8 & 0xff, height & 0xff, bitDepth, // bit depth colorType, // color type 0x00, // compression method 0x00, // filter method 0x00 // interlace method ]); var len = literals.length; var maxBlockLength = 0xFFFF; var deflateBlocks = Math.ceil(len / maxBlockLength); var idat = new Uint8Array(2 + len + deflateBlocks * 5 + 4); var pi = 0; idat[pi++] = 0x78; // compression method and flags idat[pi++] = 0x9c; // flags var pos = 0; while (len > maxBlockLength) { // writing non-final DEFLATE blocks type 0 and length of 65535 idat[pi++] = 0x00; idat[pi++] = 0xff; idat[pi++] = 0xff; idat[pi++] = 0x00; idat[pi++] = 0x00; idat.set(literals.subarray(pos, pos + maxBlockLength), pi); pi += maxBlockLength; pos += maxBlockLength; len -= maxBlockLength; } // writing non-final DEFLATE blocks type 0 idat[pi++] = 0x01; idat[pi++] = len & 0xff; idat[pi++] = len >> 8 & 0xff; idat[pi++] = (~len & 0xffff) & 0xff; idat[pi++] = (~len & 0xffff) >> 8 & 0xff; idat.set(literals.subarray(pos), pi); pi += literals.length - pos; var adler = adler32(literals, 0, literals.length); // checksum idat[pi++] = adler >> 24 & 0xff; idat[pi++] = adler >> 16 & 0xff; idat[pi++] = adler >> 8 & 0xff; idat[pi++] = adler & 0xff; // PNG will consists: header, IHDR+data, IDAT+data, and IEND. var pngLength = PNG_HEADER.length + (CHUNK_WRAPPER_SIZE * 3) + ihdr.length + idat.length; var data = new Uint8Array(pngLength); var offset = 0; data.set(PNG_HEADER, offset); offset += PNG_HEADER.length; writePngChunk('IHDR', ihdr, data, offset); offset += CHUNK_WRAPPER_SIZE + ihdr.length; writePngChunk('IDATA', idat, data, offset); offset += CHUNK_WRAPPER_SIZE + idat.length; writePngChunk('IEND', new Uint8Array(0), data, offset); return PDFJS.createObjectURL(data, 'image/png'); } return function convertImgDataToPng(imgData) { var kind = (imgData.kind === undefined ? ImageKind.GRAYSCALE_1BPP : imgData.kind); return encode(imgData, kind); }; })(); var SVGExtraState = (function SVGExtraStateClosure() { function SVGExtraState() { this.fontSizeScale = 1; this.fontWeight = SVG_DEFAULTS.fontWeight; this.fontSize = 0; this.textMatrix = IDENTITY_MATRIX; this.fontMatrix = FONT_IDENTITY_MATRIX; this.leading = 0; // Current point (in user coordinates) this.x = 0; this.y = 0; // Start of text line (in text coordinates) this.lineX = 0; this.lineY = 0; // Character and word spacing this.charSpacing = 0; this.wordSpacing = 0; this.textHScale = 1; this.textRise = 0; // Default foreground and background colors this.fillColor = SVG_DEFAULTS.fillColor; this.strokeColor = '#000000'; this.fillAlpha = 1; this.strokeAlpha = 1; this.lineWidth = 1; this.lineJoin = ''; this.lineCap = ''; this.miterLimit = 0; this.dashArray = []; this.dashPhase = 0; this.dependencies = []; // Clipping this.clipId = ''; this.pendingClip = false; this.maskId = ''; } SVGExtraState.prototype = { clone: function SVGExtraState_clone() { return Object.create(this); }, setCurrentPoint: function SVGExtraState_setCurrentPoint(x, y) { this.x = x; this.y = y; } }; return SVGExtraState; })(); var SVGGraphics = (function SVGGraphicsClosure() { function createScratchSVG(width, height) { var NS = 'http://www.w3.org/2000/svg'; var svg = document.createElementNS(NS, 'svg:svg'); svg.setAttributeNS(null, 'version', '1.1'); svg.setAttributeNS(null, 'width', width + 'px'); svg.setAttributeNS(null, 'height', height + 'px'); svg.setAttributeNS(null, 'viewBox', '0 0 ' + width + ' ' + height); return svg; } function opListToTree(opList) { var opTree = []; var tmp = []; var opListLen = opList.length; for (var x = 0; x < opListLen; x++) { if (opList[x].fn === 'save') { opTree.push({'fnId': 92, 'fn': 'group', 'items': []}); tmp.push(opTree); opTree = opTree[opTree.length - 1].items; continue; } if(opList[x].fn === 'restore') { opTree = tmp.pop(); } else { opTree.push(opList[x]); } } return opTree; } /** * Formats float number. * @param value {number} number to format. * @returns {string} */ function pf(value) { if (value === (value | 0)) { // integer number return value.toString(); } var s = value.toFixed(10); var i = s.length - 1; if (s[i] !== '0') { return s; } // removing trailing zeros do { i--; } while (s[i] === '0'); return s.substr(0, s[i] === '.' ? i : i + 1); } /** * Formats transform matrix. The standard rotation, scale and translate * matrices are replaced by their shorter forms, and for identity matrix * returns empty string to save the memory. * @param m {Array} matrix to format. * @returns {string} */ function pm(m) { if (m[4] === 0 && m[5] === 0) { if (m[1] === 0 && m[2] === 0) { if (m[0] === 1 && m[3] === 1) { return ''; } return 'scale(' + pf(m[0]) + ' ' + pf(m[3]) + ')'; } if (m[0] === m[3] && m[1] === -m[2]) { var a = Math.acos(m[0]) * 180 / Math.PI; return 'rotate(' + pf(a) + ')'; } } else { if (m[0] === 1 && m[1] === 0 && m[2] === 0 && m[3] === 1) { return 'translate(' + pf(m[4]) + ' ' + pf(m[5]) + ')'; } } return 'matrix(' + pf(m[0]) + ' ' + pf(m[1]) + ' ' + pf(m[2]) + ' ' + pf(m[3]) + ' ' + pf(m[4]) + ' ' + pf(m[5]) + ')'; } function SVGGraphics(commonObjs, objs) { this.current = new SVGExtraState(); this.transformMatrix = IDENTITY_MATRIX; // Graphics state matrix this.transformStack = []; this.extraStack = []; this.commonObjs = commonObjs; this.objs = objs; this.pendingEOFill = false; this.embedFonts = false; this.embeddedFonts = {}; this.cssStyle = null; } var NS = 'http://www.w3.org/2000/svg'; var XML_NS = 'http://www.w3.org/XML/1998/namespace'; var XLINK_NS = 'http://www.w3.org/1999/xlink'; var LINE_CAP_STYLES = ['butt', 'round', 'square']; var LINE_JOIN_STYLES = ['miter', 'round', 'bevel']; var clipCount = 0; var maskCount = 0; SVGGraphics.prototype = { save: function SVGGraphics_save() { this.transformStack.push(this.transformMatrix); var old = this.current; this.extraStack.push(old); this.current = old.clone(); }, restore: function SVGGraphics_restore() { this.transformMatrix = this.transformStack.pop(); this.current = this.extraStack.pop(); this.tgrp = document.createElementNS(NS, 'svg:g'); this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); this.pgrp.appendChild(this.tgrp); }, group: function SVGGraphics_group(items) { this.save(); this.executeOpTree(items); this.restore(); }, loadDependencies: function SVGGraphics_loadDependencies(operatorList) { var fnArray = operatorList.fnArray; var fnArrayLen = fnArray.length; var argsArray = operatorList.argsArray; var self = this; for (var i = 0; i < fnArrayLen; i++) { if (OPS.dependency === fnArray[i]) { var deps = argsArray[i]; for (var n = 0, nn = deps.length; n < nn; n++) { var obj = deps[n]; var common = obj.substring(0, 2) === 'g_'; var promise; if (common) { promise = new Promise(function(resolve) { self.commonObjs.get(obj, resolve); }); } else { promise = new Promise(function(resolve) { self.objs.get(obj, resolve); }); } this.current.dependencies.push(promise); } } } return Promise.all(this.current.dependencies); }, transform: function SVGGraphics_transform(a, b, c, d, e, f) { var transformMatrix = [a, b, c, d, e, f]; this.transformMatrix = PDFJS.Util.transform(this.transformMatrix, transformMatrix); this.tgrp = document.createElementNS(NS, 'svg:g'); this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); }, getSVG: function SVGGraphics_getSVG(operatorList, viewport) { this.svg = createScratchSVG(viewport.width, viewport.height); this.viewport = viewport; return this.loadDependencies(operatorList).then(function () { this.transformMatrix = IDENTITY_MATRIX; this.pgrp = document.createElementNS(NS, 'svg:g'); // Parent group this.pgrp.setAttributeNS(null, 'transform', pm(viewport.transform)); this.tgrp = document.createElementNS(NS, 'svg:g'); // Transform group this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); this.defs = document.createElementNS(NS, 'svg:defs'); this.pgrp.appendChild(this.defs); this.pgrp.appendChild(this.tgrp); this.svg.appendChild(this.pgrp); var opTree = this.convertOpList(operatorList); this.executeOpTree(opTree); return this.svg; }.bind(this)); }, convertOpList: function SVGGraphics_convertOpList(operatorList) { var argsArray = operatorList.argsArray; var fnArray = operatorList.fnArray; var fnArrayLen = fnArray.length; var REVOPS = []; var opList = []; for (var op in OPS) { REVOPS[OPS[op]] = op; } for (var x = 0; x < fnArrayLen; x++) { var fnId = fnArray[x]; opList.push({'fnId' : fnId, 'fn': REVOPS[fnId], 'args': argsArray[x]}); } return opListToTree(opList); }, executeOpTree: function SVGGraphics_executeOpTree(opTree) { var opTreeLen = opTree.length; for(var x = 0; x < opTreeLen; x++) { var fn = opTree[x].fn; var fnId = opTree[x].fnId; var args = opTree[x].args; switch (fnId | 0) { case OPS.beginText: this.beginText(); break; case OPS.setLeading: this.setLeading(args); break; case OPS.setLeadingMoveText: this.setLeadingMoveText(args[0], args[1]); break; case OPS.setFont: this.setFont(args); break; case OPS.showText: this.showText(args[0]); break; case OPS.showSpacedText: this.showText(args[0]); break; case OPS.endText: this.endText(); break; case OPS.moveText: this.moveText(args[0], args[1]); break; case OPS.setCharSpacing: this.setCharSpacing(args[0]); break; case OPS.setWordSpacing: this.setWordSpacing(args[0]); break; case OPS.setHScale: this.setHScale(args[0]); break; case OPS.setTextMatrix: this.setTextMatrix(args[0], args[1], args[2], args[3], args[4], args[5]); break; case OPS.setLineWidth: this.setLineWidth(args[0]); break; case OPS.setLineJoin: this.setLineJoin(args[0]); break; case OPS.setLineCap: this.setLineCap(args[0]); break; case OPS.setMiterLimit: this.setMiterLimit(args[0]); break; case OPS.setFillRGBColor: this.setFillRGBColor(args[0], args[1], args[2]); break; case OPS.setStrokeRGBColor: this.setStrokeRGBColor(args[0], args[1], args[2]); break; case OPS.setDash: this.setDash(args[0], args[1]); break; case OPS.setGState: this.setGState(args[0]); break; case OPS.fill: this.fill(); break; case OPS.eoFill: this.eoFill(); break; case OPS.stroke: this.stroke(); break; case OPS.fillStroke: this.fillStroke(); break; case OPS.eoFillStroke: this.eoFillStroke(); break; case OPS.clip: this.clip('nonzero'); break; case OPS.eoClip: this.clip('evenodd'); break; case OPS.paintSolidColorImageMask: this.paintSolidColorImageMask(); break; case OPS.paintJpegXObject: this.paintJpegXObject(args[0], args[1], args[2]); break; case OPS.paintImageXObject: this.paintImageXObject(args[0]); break; case OPS.paintInlineImageXObject: this.paintInlineImageXObject(args[0]); break; case OPS.paintImageMaskXObject: this.paintImageMaskXObject(args[0]); break; case OPS.paintFormXObjectBegin: this.paintFormXObjectBegin(args[0], args[1]); break; case OPS.paintFormXObjectEnd: this.paintFormXObjectEnd(); break; case OPS.closePath: this.closePath(); break; case OPS.closeStroke: this.closeStroke(); break; case OPS.closeFillStroke: this.closeFillStroke(); break; case OPS.nextLine: this.nextLine(); break; case OPS.transform: this.transform(args[0], args[1], args[2], args[3], args[4], args[5]); break; case OPS.constructPath: this.constructPath(args[0], args[1]); break; case OPS.endPath: this.endPath(); break; case 92: this.group(opTree[x].items); break; default: warn('Unimplemented method '+ fn); break; } } }, setWordSpacing: function SVGGraphics_setWordSpacing(wordSpacing) { this.current.wordSpacing = wordSpacing; }, setCharSpacing: function SVGGraphics_setCharSpacing(charSpacing) { this.current.charSpacing = charSpacing; }, nextLine: function SVGGraphics_nextLine() { this.moveText(0, this.current.leading); }, setTextMatrix: function SVGGraphics_setTextMatrix(a, b, c, d, e, f) { var current = this.current; this.current.textMatrix = this.current.lineMatrix = [a, b, c, d, e, f]; this.current.x = this.current.lineX = 0; this.current.y = this.current.lineY = 0; current.xcoords = []; current.tspan = document.createElementNS(NS, 'svg:tspan'); current.tspan.setAttributeNS(null, 'font-family', current.fontFamily); current.tspan.setAttributeNS(null, 'font-size', pf(current.fontSize) + 'px'); current.tspan.setAttributeNS(null, 'y', pf(-current.y)); current.txtElement = document.createElementNS(NS, 'svg:text'); current.txtElement.appendChild(current.tspan); }, beginText: function SVGGraphics_beginText() { this.current.x = this.current.lineX = 0; this.current.y = this.current.lineY = 0; this.current.textMatrix = IDENTITY_MATRIX; this.current.lineMatrix = IDENTITY_MATRIX; this.current.tspan = document.createElementNS(NS, 'svg:tspan'); this.current.txtElement = document.createElementNS(NS, 'svg:text'); this.current.txtgrp = document.createElementNS(NS, 'svg:g'); this.current.xcoords = []; }, moveText: function SVGGraphics_moveText(x, y) { var current = this.current; this.current.x = this.current.lineX += x; this.current.y = this.current.lineY += y; current.xcoords = []; current.tspan = document.createElementNS(NS, 'svg:tspan'); current.tspan.setAttributeNS(null, 'font-family', current.fontFamily); current.tspan.setAttributeNS(null, 'font-size', pf(current.fontSize) + 'px'); current.tspan.setAttributeNS(null, 'y', pf(-current.y)); }, showText: function SVGGraphics_showText(glyphs) { var current = this.current; var font = current.font; var fontSize = current.fontSize; if (fontSize === 0) { return; } var charSpacing = current.charSpacing; var wordSpacing = current.wordSpacing; var fontDirection = current.fontDirection; var textHScale = current.textHScale * fontDirection; var glyphsLength = glyphs.length; var vertical = font.vertical; var widthAdvanceScale = fontSize * current.fontMatrix[0]; var x = 0, i; for (i = 0; i < glyphsLength; ++i) { var glyph = glyphs[i]; if (glyph === null) { // word break x += fontDirection * wordSpacing; continue; } else if (isNum(glyph)) { x += -glyph * fontSize * 0.001; continue; } current.xcoords.push(current.x + x * textHScale); var width = glyph.width; var character = glyph.fontChar; var charWidth = width * widthAdvanceScale + charSpacing * fontDirection; x += charWidth; current.tspan.textContent += character; } if (vertical) { current.y -= x * textHScale; } else { current.x += x * textHScale; } current.tspan.setAttributeNS(null, 'x', current.xcoords.map(pf).join(' ')); current.tspan.setAttributeNS(null, 'y', pf(-current.y)); current.tspan.setAttributeNS(null, 'font-family', current.fontFamily); current.tspan.setAttributeNS(null, 'font-size', pf(current.fontSize) + 'px'); if (current.fontStyle !== SVG_DEFAULTS.fontStyle) { current.tspan.setAttributeNS(null, 'font-style', current.fontStyle); } if (current.fontWeight !== SVG_DEFAULTS.fontWeight) { current.tspan.setAttributeNS(null, 'font-weight', current.fontWeight); } if (current.fillColor !== SVG_DEFAULTS.fillColor) { current.tspan.setAttributeNS(null, 'fill', current.fillColor); } current.txtElement.setAttributeNS(null, 'transform', pm(current.textMatrix) + ' scale(1, -1)' ); current.txtElement.setAttributeNS(XML_NS, 'xml:space', 'preserve'); current.txtElement.appendChild(current.tspan); current.txtgrp.appendChild(current.txtElement); this.tgrp.appendChild(current.txtElement); }, setLeadingMoveText: function SVGGraphics_setLeadingMoveText(x, y) { this.setLeading(-y); this.moveText(x, y); }, addFontStyle: function SVGGraphics_addFontStyle(fontObj) { if (!this.cssStyle) { this.cssStyle = document.createElementNS(NS, 'svg:style'); this.cssStyle.setAttributeNS(null, 'type', 'text/css'); this.defs.appendChild(this.cssStyle); } var url = PDFJS.createObjectURL(fontObj.data, fontObj.mimetype); this.cssStyle.textContent += '@font-face { font-family: "' + fontObj.loadedName + '";' + ' src: url(' + url + '); }\n'; }, setFont: function SVGGraphics_setFont(details) { var current = this.current; var fontObj = this.commonObjs.get(details[0]); var size = details[1]; this.current.font = fontObj; if (this.embedFonts && fontObj.data && !this.embeddedFonts[fontObj.loadedName]) { this.addFontStyle(fontObj); this.embeddedFonts[fontObj.loadedName] = fontObj; } current.fontMatrix = (fontObj.fontMatrix ? fontObj.fontMatrix : FONT_IDENTITY_MATRIX); var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') : (fontObj.bold ? 'bold' : 'normal'); var italic = fontObj.italic ? 'italic' : 'normal'; if (size < 0) { size = -size; current.fontDirection = -1; } else { current.fontDirection = 1; } current.fontSize = size; current.fontFamily = fontObj.loadedName; current.fontWeight = bold; current.fontStyle = italic; current.tspan = document.createElementNS(NS, 'svg:tspan'); current.tspan.setAttributeNS(null, 'y', pf(-current.y)); current.xcoords = []; }, endText: function SVGGraphics_endText() { if (this.current.pendingClip) { this.cgrp.appendChild(this.tgrp); this.pgrp.appendChild(this.cgrp); } else { this.pgrp.appendChild(this.tgrp); } this.tgrp = document.createElementNS(NS, 'svg:g'); this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); }, // Path properties setLineWidth: function SVGGraphics_setLineWidth(width) { this.current.lineWidth = width; }, setLineCap: function SVGGraphics_setLineCap(style) { this.current.lineCap = LINE_CAP_STYLES[style]; }, setLineJoin: function SVGGraphics_setLineJoin(style) { this.current.lineJoin = LINE_JOIN_STYLES[style]; }, setMiterLimit: function SVGGraphics_setMiterLimit(limit) { this.current.miterLimit = limit; }, setStrokeRGBColor: function SVGGraphics_setStrokeRGBColor(r, g, b) { var color = Util.makeCssRgb(r, g, b); this.current.strokeColor = color; }, setFillRGBColor: function SVGGraphics_setFillRGBColor(r, g, b) { var color = Util.makeCssRgb(r, g, b); this.current.fillColor = color; this.current.tspan = document.createElementNS(NS, 'svg:tspan'); this.current.xcoords = []; }, setDash: function SVGGraphics_setDash(dashArray, dashPhase) { this.current.dashArray = dashArray; this.current.dashPhase = dashPhase; }, constructPath: function SVGGraphics_constructPath(ops, args) { var current = this.current; var x = current.x, y = current.y; current.path = document.createElementNS(NS, 'svg:path'); var d = []; var opLength = ops.length; for (var i = 0, j = 0; i < opLength; i++) { switch (ops[i] | 0) { case OPS.rectangle: x = args[j++]; y = args[j++]; var width = args[j++]; var height = args[j++]; var xw = x + width; var yh = y + height; d.push('M', pf(x), pf(y), 'L', pf(xw) , pf(y), 'L', pf(xw), pf(yh), 'L', pf(x), pf(yh), 'Z'); break; case OPS.moveTo: x = args[j++]; y = args[j++]; d.push('M', pf(x), pf(y)); break; case OPS.lineTo: x = args[j++]; y = args[j++]; d.push('L', pf(x) , pf(y)); break; case OPS.curveTo: x = args[j + 4]; y = args[j + 5]; d.push('C', pf(args[j]), pf(args[j + 1]), pf(args[j + 2]), pf(args[j + 3]), pf(x), pf(y)); j += 6; break; case OPS.curveTo2: x = args[j + 2]; y = args[j + 3]; d.push('C', pf(x), pf(y), pf(args[j]), pf(args[j + 1]), pf(args[j + 2]), pf(args[j + 3])); j += 4; break; case OPS.curveTo3: x = args[j + 2]; y = args[j + 3]; d.push('C', pf(args[j]), pf(args[j + 1]), pf(x), pf(y), pf(x), pf(y)); j += 4; break; case OPS.closePath: d.push('Z'); break; } } current.path.setAttributeNS(null, 'd', d.join(' ')); current.path.setAttributeNS(null, 'stroke-miterlimit', pf(current.miterLimit)); current.path.setAttributeNS(null, 'stroke-linecap', current.lineCap); current.path.setAttributeNS(null, 'stroke-linejoin', current.lineJoin); current.path.setAttributeNS(null, 'stroke-width', pf(current.lineWidth) + 'px'); current.path.setAttributeNS(null, 'stroke-dasharray', current.dashArray.map(pf).join(' ')); current.path.setAttributeNS(null, 'stroke-dashoffset', pf(current.dashPhase) + 'px'); current.path.setAttributeNS(null, 'fill', 'none'); this.tgrp.appendChild(current.path); if (current.pendingClip) { this.cgrp.appendChild(this.tgrp); this.pgrp.appendChild(this.cgrp); } else { this.pgrp.appendChild(this.tgrp); } // Saving a reference in current.element so that it can be addressed // in 'fill' and 'stroke' current.element = current.path; current.setCurrentPoint(x, y); }, endPath: function SVGGraphics_endPath() { var current = this.current; if (current.pendingClip) { this.cgrp.appendChild(this.tgrp); this.pgrp.appendChild(this.cgrp); } else { this.pgrp.appendChild(this.tgrp); } this.tgrp = document.createElementNS(NS, 'svg:g'); this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); }, clip: function SVGGraphics_clip(type) { var current = this.current; // Add current path to clipping path current.clipId = 'clippath' + clipCount; clipCount++; this.clippath = document.createElementNS(NS, 'svg:clipPath'); this.clippath.setAttributeNS(null, 'id', current.clipId); var clipElement = current.element.cloneNode(); if (type === 'evenodd') { clipElement.setAttributeNS(null, 'clip-rule', 'evenodd'); } else { clipElement.setAttributeNS(null, 'clip-rule', 'nonzero'); } this.clippath.setAttributeNS(null, 'transform', pm(this.transformMatrix)); this.clippath.appendChild(clipElement); this.defs.appendChild(this.clippath); // Create a new group with that attribute current.pendingClip = true; this.cgrp = document.createElementNS(NS, 'svg:g'); this.cgrp.setAttributeNS(null, 'clip-path', 'url(#' + current.clipId + ')'); this.pgrp.appendChild(this.cgrp); }, closePath: function SVGGraphics_closePath() { var current = this.current; var d = current.path.getAttributeNS(null, 'd'); d += 'Z'; current.path.setAttributeNS(null, 'd', d); }, setLeading: function SVGGraphics_setLeading(leading) { this.current.leading = -leading; }, setTextRise: function SVGGraphics_setTextRise(textRise) { this.current.textRise = textRise; }, setHScale: function SVGGraphics_setHScale(scale) { this.current.textHScale = scale / 100; }, setGState: function SVGGraphics_setGState(states) { for (var i = 0, ii = states.length; i < ii; i++) { var state = states[i]; var key = state[0]; var value = state[1]; switch (key) { case 'LW': this.setLineWidth(value); break; case 'LC': this.setLineCap(value); break; case 'LJ': this.setLineJoin(value); break; case 'ML': this.setMiterLimit(value); break; case 'D': this.setDash(value[0], value[1]); break; case 'RI': break; case 'FL': break; case 'Font': this.setFont(value); break; case 'CA': break; case 'ca': break; case 'BM': break; case 'SMask': break; } } }, fill: function SVGGraphics_fill() { var current = this.current; current.element.setAttributeNS(null, 'fill', current.fillColor); }, stroke: function SVGGraphics_stroke() { var current = this.current; current.element.setAttributeNS(null, 'stroke', current.strokeColor); current.element.setAttributeNS(null, 'fill', 'none'); }, eoFill: function SVGGraphics_eoFill() { var current = this.current; current.element.setAttributeNS(null, 'fill', current.fillColor); current.element.setAttributeNS(null, 'fill-rule', 'evenodd'); }, fillStroke: function SVGGraphics_fillStroke() { // Order is important since stroke wants fill to be none. // First stroke, then if fill needed, it will be overwritten. this.stroke(); this.fill(); }, eoFillStroke: function SVGGraphics_eoFillStroke() { this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd'); this.fillStroke(); }, closeStroke: function SVGGraphics_closeStroke() { this.closePath(); this.stroke(); }, closeFillStroke: function SVGGraphics_closeFillStroke() { this.closePath(); this.fillStroke(); }, paintSolidColorImageMask: function SVGGraphics_paintSolidColorImageMask() { var current = this.current; var rect = document.createElementNS(NS, 'svg:rect'); rect.setAttributeNS(null, 'x', '0'); rect.setAttributeNS(null, 'y', '0'); rect.setAttributeNS(null, 'width', '1px'); rect.setAttributeNS(null, 'height', '1px'); rect.setAttributeNS(null, 'fill', current.fillColor); this.tgrp.appendChild(rect); }, paintJpegXObject: function SVGGraphics_paintJpegXObject(objId, w, h) { var current = this.current; var imgObj = this.objs.get(objId); var imgEl = document.createElementNS(NS, 'svg:image'); imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgObj.src); imgEl.setAttributeNS(null, 'width', imgObj.width + 'px'); imgEl.setAttributeNS(null, 'height', imgObj.height + 'px'); imgEl.setAttributeNS(null, 'x', '0'); imgEl.setAttributeNS(null, 'y', pf(-h)); imgEl.setAttributeNS(null, 'transform', 'scale(' + pf(1 / w) + ' ' + pf(-1 / h) + ')'); this.tgrp.appendChild(imgEl); if (current.pendingClip) { this.cgrp.appendChild(this.tgrp); this.pgrp.appendChild(this.cgrp); } else { this.pgrp.appendChild(this.tgrp); } }, paintImageXObject: function SVGGraphics_paintImageXObject(objId) { var imgData = this.objs.get(objId); if (!imgData) { warn('Dependent image isn\'t ready yet'); return; } this.paintInlineImageXObject(imgData); }, paintInlineImageXObject: function SVGGraphics_paintInlineImageXObject(imgData, mask) { var current = this.current; var width = imgData.width; var height = imgData.height; var imgSrc = convertImgDataToPng(imgData); var cliprect = document.createElementNS(NS, 'svg:rect'); cliprect.setAttributeNS(null, 'x', '0'); cliprect.setAttributeNS(null, 'y', '0'); cliprect.setAttributeNS(null, 'width', pf(width)); cliprect.setAttributeNS(null, 'height', pf(height)); current.element = cliprect; this.clip('nonzero'); var imgEl = document.createElementNS(NS, 'svg:image'); imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgSrc); imgEl.setAttributeNS(null, 'x', '0'); imgEl.setAttributeNS(null, 'y', pf(-height)); imgEl.setAttributeNS(null, 'width', pf(width) + 'px'); imgEl.setAttributeNS(null, 'height', pf(height) + 'px'); imgEl.setAttributeNS(null, 'transform', 'scale(' + pf(1 / width) + ' ' + pf(-1 / height) + ')'); if (mask) { mask.appendChild(imgEl); } else { this.tgrp.appendChild(imgEl); } if (current.pendingClip) { this.cgrp.appendChild(this.tgrp); this.pgrp.appendChild(this.cgrp); } else { this.pgrp.appendChild(this.tgrp); } }, paintImageMaskXObject: function SVGGraphics_paintImageMaskXObject(imgData) { var current = this.current; var width = imgData.width; var height = imgData.height; var fillColor = current.fillColor; current.maskId = 'mask' + maskCount++; var mask = document.createElementNS(NS, 'svg:mask'); mask.setAttributeNS(null, 'id', current.maskId); var rect = document.createElementNS(NS, 'svg:rect'); rect.setAttributeNS(null, 'x', '0'); rect.setAttributeNS(null, 'y', '0'); rect.setAttributeNS(null, 'width', pf(width)); rect.setAttributeNS(null, 'height', pf(height)); rect.setAttributeNS(null, 'fill', fillColor); rect.setAttributeNS(null, 'mask', 'url(#' + current.maskId +')'); this.defs.appendChild(mask); this.tgrp.appendChild(rect); this.paintInlineImageXObject(imgData, mask); }, paintFormXObjectBegin: function SVGGraphics_paintFormXObjectBegin(matrix, bbox) { this.save(); if (isArray(matrix) && matrix.length === 6) { this.transform(matrix[0], matrix[1], matrix[2], matrix[3], matrix[4], matrix[5]); } if (isArray(bbox) && bbox.length === 4) { var width = bbox[2] - bbox[0]; var height = bbox[3] - bbox[1]; var cliprect = document.createElementNS(NS, 'svg:rect'); cliprect.setAttributeNS(null, 'x', bbox[0]); cliprect.setAttributeNS(null, 'y', bbox[1]); cliprect.setAttributeNS(null, 'width', pf(width)); cliprect.setAttributeNS(null, 'height', pf(height)); this.current.element = cliprect; this.clip('nonzero'); this.endPath(); } }, paintFormXObjectEnd: function SVGGraphics_paintFormXObjectEnd() { this.restore(); } }; return SVGGraphics; })(); PDFJS.SVGGraphics = SVGGraphics; }).call((typeof window === 'undefined') ? this : window); if (!PDFJS.workerSrc && typeof document !== 'undefined') { // workerSrc is not set -- using last script url to define default location PDFJS.workerSrc = (function () { 'use strict'; var pdfJsSrc = document.currentScript.src; return pdfJsSrc && pdfJsSrc.replace(/\.js$/i, '.worker.js'); })(); }