mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-07 20:31:06 -05:00
852 lines
27 KiB
JavaScript
852 lines
27 KiB
JavaScript
import _ from 'lodash'
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/* eslint-disable
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node/handle-callback-err,
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max-len,
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new-cap,
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no-return-assign,
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no-sequences,
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no-unused-vars,
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*/
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// TODO: This file was created by bulk-decaffeinate.
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// Fix any style issues and re-enable lint.
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/*
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* decaffeinate suggestions:
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* DS101: Remove unnecessary use of Array.from
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* DS102: Remove unnecessary code created because of implicit returns
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* DS103: Rewrite code to no longer use __guard__
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* DS104: Avoid inline assignments
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* DS207: Consider shorter variations of null checks
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* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
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*/
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import App from '../../../base'
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import { captureMessage } from '../../../infrastructure/error-reporter'
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import pdfTextLayer from './pdfTextLayer'
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import pdfAnnotations from './pdfAnnotations'
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import pdfHighlights from './pdfHighlights'
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import pdfRenderer from './pdfRenderer'
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import pdfPage from './pdfPage'
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import pdfSpinner from './pdfSpinner'
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App.controller('pdfViewerController', function(
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$scope,
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$q,
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$timeout,
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PDFRenderer,
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$element,
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pdfHighlights,
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pdfSpinner
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) {
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this.load = function() {
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// $scope.pages = []
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// Ensure previous document is torn down before loading the next one (to
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// prevent race conditions)
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const documentTearDown =
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$scope.document != null ? $scope.document.destroy() : Promise.resolve()
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return documentTearDown.then(() => {
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$scope.loadCount = $scope.loadCount != null ? $scope.loadCount + 1 : 1
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// TODO need a proper url manipulation library to add to query string
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let url = $scope.pdfSrc
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// add 'pdfng=true' to show that we are using the angular pdfjs viewer
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const queryStringExists = /\?/.test(url)
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url = url + (!queryStringExists ? '?' : '&') + 'pdfng=true'
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// for isolated compiles, load the pdf on-demand because nobody will overwrite it
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const onDemandLoading = true
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$scope.document = new PDFRenderer(url, {
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scale: 1,
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disableAutoFetch: onDemandLoading ? true : undefined,
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navigateFn(ref) {
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// this function captures clicks on the annotation links
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$scope.navigateTo = ref
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return $scope.$apply()
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},
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progressCallback(progress) {
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return $scope.$emit('progress', progress)
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},
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loadedCallback() {
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return $scope.$emit('loaded')
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},
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errorCallback(error) {
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// MissingPDFException is "expected" as the pdf file can be on a
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// CLSI server that has been cycled out.
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// Currently, there is NO error handling to handle this situation,
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// but we plan to add this in the future
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// (https://github.com/overleaf/issues/issues/2985) and this error
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// is causing noise in Sentry so ignore it
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if (!error || error.name !== 'MissingPDFException') {
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captureMessage(`pdfng error ${error}`)
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}
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return $scope.$emit('pdf:error', error)
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},
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pageSizeChangeCallback(pageNum, deltaH) {
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return $scope.$broadcast('pdf:page:size-change', pageNum, deltaH)
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}
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})
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// we will have all the main information needed to start display
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// after the following promise is resolved
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$scope.loaded = $q
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.all({
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numPages: $scope.document.getNumPages(),
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// get size of first page as default @ scale 1
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pdfViewport: $scope.document.getPdfViewport(1, 1)
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})
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.then(function(result) {
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$scope.pdfViewport = result.pdfViewport
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$scope.pdfPageSize = [
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result.pdfViewport.height,
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result.pdfViewport.width
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]
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// console.log 'resolved q.all, page size is', result
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$scope.$emit('loaded')
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return ($scope.numPages = result.numPages)
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})
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.catch(function(error) {
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$scope.$emit('pdf:error', error)
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return $q.reject(error)
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})
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return $scope.loaded
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})
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}
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this.setScale = (scale, containerHeight, containerWidth) =>
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$scope.loaded
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.then(function() {
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let numScale
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if (scale == null) {
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scale = {}
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}
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if (containerHeight === 0 || containerWidth === 0) {
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numScale = 1
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} else if (scale.scaleMode === 'scale_mode_fit_width') {
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// TODO make this dynamic
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numScale = (containerWidth - 40) / $scope.pdfPageSize[1]
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} else if (scale.scaleMode === 'scale_mode_fit_height') {
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// TODO magic numbers for jquery ui layout
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numScale = (containerHeight - 20) / $scope.pdfPageSize[0]
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} else if (scale.scaleMode === 'scale_mode_value') {
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numScale = scale.scale
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} else if (scale.scaleMode === 'scale_mode_auto') {
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// TODO
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} else {
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scale.scaleMode = 'scale_mode_fit_width'
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numScale = (containerWidth - 40) / $scope.pdfPageSize[1]
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}
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// TODO
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$scope.scale.scale = numScale
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$scope.document.setScale(numScale)
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return ($scope.defaultPageSize = [
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numScale * $scope.pdfPageSize[0],
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numScale * $scope.pdfPageSize[1]
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])
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})
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// console.log 'in setScale result', $scope.scale.scale, $scope.defaultPageSize
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.catch(function(error) {
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$scope.$emit('pdf:error', error)
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return $q.reject(error)
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})
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this.redraw = function(position) {
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// console.log 'in redraw'
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// console.log 'reseting pages array for', $scope.numPages
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$scope.pages = __range__(0, $scope.numPages - 1, true).map(i => ({
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pageNum: i + 1
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}))
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if (position != null && position.page != null) {
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// console.log 'position is', position.page, position.offset
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// console.log 'setting current page', position.page
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let pagenum = position.page
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if (pagenum > $scope.numPages - 1) {
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pagenum = $scope.numPages - 1
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}
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$scope.pages[pagenum].current = true
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return ($scope.pages[pagenum].position = position)
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}
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}
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this.zoomIn = function() {
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// console.log 'zoom in'
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const newScale = $scope.scale.scale * 1.2
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return ($scope.forceScale = {
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scaleMode: 'scale_mode_value',
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scale: newScale
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})
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}
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this.zoomOut = function() {
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// console.log 'zoom out'
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const newScale = $scope.scale.scale / 1.2
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return ($scope.forceScale = {
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scaleMode: 'scale_mode_value',
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scale: newScale
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})
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}
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this.fitWidth = () =>
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// console.log 'fit width'
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($scope.forceScale = { scaleMode: 'scale_mode_fit_width' })
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this.fitHeight = () =>
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// console.log 'fit height'
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($scope.forceScale = { scaleMode: 'scale_mode_fit_height' })
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this.checkPosition = () =>
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// console.log 'check position'
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($scope.forceCheck = ($scope.forceCheck || 0) + 1)
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this.showRandomHighlights = () =>
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// console.log 'show highlights'
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($scope.highlights = [
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{
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page: 3,
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h: 100,
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v: 100,
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height: 30,
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width: 200
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}
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])
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// we work with (pagenumber, % of height down page from top)
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// pdfListView works with (pagenumber, vertical position up page from
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// bottom measured in pts)
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this.getPdfPosition = function() {
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// console.log 'in getPdfPosition'
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let canvasOffset, pdfOffset, viewport
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let topPageIdx = 0
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let topPage = $scope.pages[0]
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// find first visible page
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const visible = $scope.pages.some(function(page, i) {
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if (page.visible) {
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let ref
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return ([topPageIdx, topPage] = Array.from((ref = [i, page]))), ref
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}
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})
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if (visible && topPage.element != null) {
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// console.log 'found it', topPageIdx
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} else {
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// console.log 'CANNOT FIND TOP PAGE'
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return
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}
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// console.log 'top page is', topPage.pageNum, topPage.elemTop, topPage.elemBottom, topPage
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const { top } = topPage.element.offset()
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const bottom = top + topPage.element.innerHeight()
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const viewportTop = $element.offset().top
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const viewportBottom = viewportTop + $element.height()
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const topVisible = top >= viewportTop && top < viewportBottom
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const someContentVisible = top < viewportTop && bottom > viewportTop
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// console.log 'in PdfListView', top, topVisible, someContentVisible, viewportTop
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if (topVisible) {
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canvasOffset = 0
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} else if (someContentVisible) {
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canvasOffset = viewportTop - top
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} else {
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canvasOffset = null
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}
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// console.log 'pdfListview position = ', canvasOffset
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// instead of using promise, check if size is known and revert to
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// default otherwise
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// console.log 'looking up viewport', topPage.viewport, $scope.pdfViewport
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if (topPage.viewport) {
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;({ viewport } = topPage)
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pdfOffset = viewport.convertToPdfPoint(0, canvasOffset)
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} else {
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// console.log 'WARNING: had to default to global page size'
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viewport = $scope.pdfViewport
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const scaledOffset = canvasOffset / $scope.scale.scale
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pdfOffset = viewport.convertToPdfPoint(0, scaledOffset)
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}
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// console.log 'converted to offset = ', pdfOffset
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const newPosition = {
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page: topPageIdx,
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offset: { top: pdfOffset[1], left: 0 },
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pageSize: { height: viewport.viewBox[3], width: viewport.viewBox[2] }
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}
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return newPosition
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}
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this.computeOffset = function(page, position) {
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// console.log 'computing offset for', page, position
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const { element } = page
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// console.log 'element =', $(element), 'parent =', $(element).parent()
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const t1 = __guard__($(element).offset(), x => x.top)
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const t2 = __guard__(
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$(element)
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.parent()
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.offset(),
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x1 => x1.top
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)
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if (!(t1 != null && t2 != null)) {
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return $q((resolve, reject) => reject('elements destroyed'))
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}
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const pageTop =
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$(element).offset().top -
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$(element)
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.parent()
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.offset().top
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// console.log('top of page scroll is', pageTop, 'vs', page.elemTop)
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// console.log('inner height is', $(element).innerHeight())
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const currentScroll = $(element)
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.parent()
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.scrollTop()
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const { offset } = position
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// convert offset to pixels
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return $scope.document
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.getPdfViewport(page.pageNum)
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.then(function(viewport) {
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page.viewport = viewport
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const pageOffset = viewport.convertToViewportPoint(
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offset.left,
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offset.top
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)
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// if the passed-in position doesn't have the page height/width add them now
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if (position.pageSize == null) {
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position.pageSize = {
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height: viewport.viewBox[3],
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width: viewport.viewBox[2]
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}
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}
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// console.log 'addition offset =', pageOffset
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// console.log 'total', pageTop + pageOffset[1]
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return Math.round(pageTop + pageOffset[1] + currentScroll)
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}) // # 10 is margin
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}
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this.setPdfPosition = function(page, position) {
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// console.log 'required pdf Position is', position
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return this.computeOffset(page, position).then(function(offset) {
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return $scope.$apply(() => {
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$scope.pleaseScrollTo = offset
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$scope.position = position
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})
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})
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}
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return this
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})
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export default App.directive('pdfViewer', ($q, $timeout, pdfSpinner) => ({
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controller: 'pdfViewerController',
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controllerAs: 'ctrl',
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scope: {
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pdfSrc: '=',
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highlights: '=',
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position: '=',
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scale: '=',
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pleaseJumpTo: '='
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},
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template: `\
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<div data-pdf-page class='pdf-page-container page-container' ng-repeat='page in pages'></div>\
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`,
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link(scope, element, attrs, ctrl) {
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// console.log 'in pdfViewer element is', element
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// console.log 'attrs', attrs
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const spinner = new pdfSpinner()
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let layoutReady = $q.defer()
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layoutReady.notify('waiting for layout')
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layoutReady.promise.then(function() {})
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// console.log 'layoutReady was resolved'
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const renderVisiblePages = function() {
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const visiblePages = getVisiblePages()
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const pages = getExtraPages(visiblePages)
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return scope.document.renderPages(pages)
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}
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var getVisiblePages = function() {
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const top = element[0].scrollTop
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const bottom = top + element[0].clientHeight
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const visiblePages = _.filter(scope.pages, function(page) {
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if (page.element == null) {
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return false
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}
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const pageElement = page.element[0]
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const pageTop = pageElement.offsetTop
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const pageBottom = pageTop + pageElement.clientHeight
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page.visible = pageTop < bottom && pageBottom > top
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return page.visible
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})
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return visiblePages
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}
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var getExtraPages = function(visiblePages) {
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const extra = []
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if (visiblePages.length > 0) {
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const firstVisiblePage = visiblePages[0].pageNum
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const firstVisiblePageIdx = firstVisiblePage - 1
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const len = visiblePages.length
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const lastVisiblePage = visiblePages[len - 1].pageNum
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const lastVisiblePageIdx = lastVisiblePage - 1
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// first page after
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if (lastVisiblePageIdx + 1 < scope.pages.length) {
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extra.push(scope.pages[lastVisiblePageIdx + 1])
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}
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// page before
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if (firstVisiblePageIdx > 0) {
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extra.push(scope.pages[firstVisiblePageIdx - 1])
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}
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// second page after
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if (lastVisiblePageIdx + 2 < scope.pages.length) {
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extra.push(scope.pages[lastVisiblePageIdx + 2])
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}
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}
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return visiblePages.concat(extra)
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}
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let rescaleTimer = null
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const queueRescale = function(scale) {
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// console.log 'call to queueRescale'
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if (rescaleTimer != null || layoutTimer != null || elementTimer != null) {
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return
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}
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// console.log 'adding to rescale queue'
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return (rescaleTimer = setTimeout(function() {
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doRescale(scale)
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return (rescaleTimer = null)
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}, 0))
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}
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let spinnerTimer = null
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var doRescale = function(scale) {
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// console.log 'doRescale', scale
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if (scale == null) {
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return
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}
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const origposition = angular.copy(scope.position)
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// console.log 'origposition', origposition
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if (spinnerTimer == null) {
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spinnerTimer = setTimeout(function() {
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spinner.add(element)
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return (spinnerTimer = null)
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}, 100)
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}
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return layoutReady.promise.then(function(parentSize) {
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const [h, w] = Array.from(parentSize)
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// console.log 'in promise', h, w
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return ctrl
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.setScale(scale, h, w)
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.then(() =>
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// console.log 'in setscale then', scale, h, w
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scope.$evalAsync(function() {
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if (spinnerTimer) {
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clearTimeout(spinnerTimer)
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} else {
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spinner.remove(element)
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}
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// stop displaying the text layer
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element.removeClass('pdfjs-viewer-show-text')
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ctrl.redraw(origposition)
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$timeout(renderVisiblePages)
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return (scope.loadSuccess = true)
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})
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)
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.catch(error => scope.$emit('pdf:error', error))
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})
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}
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var elementTimer = null
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var updateLayout = function() {
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// if element is zero-sized keep checking until it is ready
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// console.log 'checking element ready', element.height(), element.width()
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if (element.height() === 0 || element.width() === 0) {
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if (elementTimer != null) {
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return
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}
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return (elementTimer = setTimeout(function() {
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elementTimer = null
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return updateLayout()
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}, 1000))
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} else {
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scope.parentSize = [element.innerHeight(), element.innerWidth()]
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// console.log 'resolving layoutReady with', scope.parentSize
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return $timeout(function() {
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layoutReady.resolve(scope.parentSize)
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return scope.$emit('flash-controls')
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})
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}
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}
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var layoutTimer = null
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const queueLayout = function() {
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// console.log 'call to queue layout'
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if (layoutTimer != null) {
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return
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}
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// console.log 'added to queue layoyt'
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layoutReady = $q.defer()
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return (layoutTimer = setTimeout(function() {
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// console.log 'calling update layout'
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updateLayout()
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// console.log 'setting layout timer to null'
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return (layoutTimer = null)
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}, 0))
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}
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queueLayout()
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// scope.$on 'layout:pdf:view', (e, args) ->
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// console.log 'pdf view change', element, e, args
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// queueLayout()
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scope.$on('layout:main:resize', () =>
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// console.log 'GOT LAYOUT-MAIN-RESIZE EVENT'
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queueLayout()
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)
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scope.$on('layout:pdf:resize', () =>
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// FIXME we get this event twice
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// also we need to start a new layout when we get it
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// console.log 'GOT LAYOUT-PDF-RESIZE EVENT'
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queueLayout()
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)
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scope.$on('pdf:error', function(event, error) {
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if (error.name === 'RenderingCancelledException') {
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return
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}
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// check if too many retries or file is missing
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const message = (error != null ? error.message : undefined) || error
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if (
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scope.loadCount > 3 ||
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/^Missing PDF/i.test(message) ||
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/^loading/i.test(message)
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) {
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scope.$emit('pdf:error:display')
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return
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}
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if (scope.loadSuccess) {
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return ctrl
|
|
.load()
|
|
.then(
|
|
() =>
|
|
// trigger a redraw
|
|
(scope.scale = angular.copy(scope.scale))
|
|
)
|
|
.catch(error => scope.$emit('pdf:error:display'))
|
|
} else {
|
|
scope.$emit('pdf:error:display')
|
|
}
|
|
})
|
|
|
|
scope.$on('pdf:page:size-change', function(event, pageNum, delta) {
|
|
// console.log 'page size change event', pageNum, delta
|
|
const origposition = angular.copy(scope.position)
|
|
// console.log 'orig position', JSON.stringify(origposition)
|
|
if (
|
|
origposition != null &&
|
|
pageNum - 1 < origposition.page &&
|
|
delta !== 0
|
|
) {
|
|
const currentScrollTop = element.scrollTop()
|
|
// console.log 'adjusting scroll from', currentScrollTop, 'by', delta
|
|
scope.adjustingScroll = true
|
|
return element.scrollTop(currentScrollTop + delta)
|
|
}
|
|
})
|
|
|
|
element.on('mousedown', function(e) {
|
|
// We're checking that the event target isn't the directive root element
|
|
// to make sure that the click was within a PDF page - no point in showing
|
|
// the text layer when the click is outside.
|
|
// If the user clicks a PDF page, the mousedown target will be the canvas
|
|
// element (or the text layer one). Alternatively, if the event target is
|
|
// the root element, we can assume that the user has clicked either the
|
|
// grey background area or the scrollbars.
|
|
if (e.target !== element[0] && !_hasSelection()) {
|
|
element.addClass('pdfjs-viewer-show-text')
|
|
return _setMouseUpHandler()
|
|
}
|
|
})
|
|
|
|
let mouseUpHandler = null // keep track of the handler to avoid adding multiple times
|
|
|
|
var _setMouseUpHandler = function() {
|
|
if (mouseUpHandler == null) {
|
|
return (mouseUpHandler = $(document.body).one(
|
|
'mouseup',
|
|
_handleSelectionMouseUp
|
|
))
|
|
}
|
|
}
|
|
|
|
var _handleSelectionMouseUp = function() {
|
|
mouseUpHandler = null // reset handler, has now fired
|
|
window.setTimeout(function() {
|
|
const removedClass = _removeClassIfNoSelection()
|
|
// if we still have a selection we need to keep the handler going
|
|
if (!removedClass) {
|
|
return _setMouseUpHandler()
|
|
}
|
|
}, 10)
|
|
return true
|
|
}
|
|
|
|
var _removeClassIfNoSelection = function() {
|
|
if (_hasSelection()) {
|
|
return false // didn't remove the text layer
|
|
} else {
|
|
element.removeClass('pdfjs-viewer-show-text')
|
|
return true
|
|
}
|
|
}
|
|
|
|
var _hasSelection = function() {
|
|
const selection =
|
|
typeof window.getSelection === 'function'
|
|
? window.getSelection()
|
|
: undefined
|
|
// check the selection collapsed state in preference to
|
|
// using selection.toString() as the latter is "" when
|
|
// the selection is hidden (e.g. while viewing logs)
|
|
return (
|
|
selection != null &&
|
|
_isSelectionWithinPDF(selection) &&
|
|
!selection.isCollapsed
|
|
)
|
|
}
|
|
|
|
var _isSelectionWithinPDF = function(selection) {
|
|
if (selection.rangeCount === 0) {
|
|
return false
|
|
}
|
|
const selectionAncestorNode = selection.getRangeAt(0)
|
|
.commonAncestorContainer
|
|
return (
|
|
element.find(selectionAncestorNode).length > 0 ||
|
|
element.is(selectionAncestorNode)
|
|
)
|
|
}
|
|
|
|
element.on('scroll', function() {
|
|
// console.log 'scroll event', element.scrollTop(), 'adjusting?', scope.adjustingScroll
|
|
// scope.scrollPosition = element.scrollTop()
|
|
if (scope.adjustingScroll) {
|
|
renderVisiblePages()
|
|
scope.adjustingScroll = false
|
|
return
|
|
}
|
|
if (scope.scrollHandlerTimeout) {
|
|
clearTimeout(scope.scrollHandlerTimeout)
|
|
}
|
|
return (scope.scrollHandlerTimeout = setTimeout(scrollHandler, 25))
|
|
})
|
|
|
|
var scrollHandler = function() {
|
|
renderVisiblePages()
|
|
const newPosition = ctrl.getPdfPosition()
|
|
if (newPosition != null) {
|
|
scope.position = newPosition
|
|
}
|
|
return (scope.scrollHandlerTimeout = null)
|
|
}
|
|
|
|
scope.$watch('pdfSrc', function(newVal, oldVal) {
|
|
// console.log 'loading pdf', newVal, oldVal
|
|
if (newVal == null) {
|
|
return
|
|
}
|
|
scope.loadCount = 0 // new pdf, so reset load count
|
|
scope.loadSuccess = false
|
|
return ctrl
|
|
.load()
|
|
.then(
|
|
() =>
|
|
// trigger a redraw
|
|
(scope.scale = angular.copy(scope.scale))
|
|
)
|
|
.catch(error => scope.$emit('pdf:error', error))
|
|
})
|
|
|
|
scope.$watch('scale', function(newVal, oldVal) {
|
|
// no need to set scale when initialising, done in pdfSrc
|
|
if (newVal === oldVal) {
|
|
return
|
|
}
|
|
// console.log 'XXX calling Setscale in scale watch'
|
|
return queueRescale(newVal)
|
|
})
|
|
|
|
scope.$watch('forceScale', function(newVal, oldVal) {
|
|
// console.log 'got change in numscale watcher', newVal, oldVal
|
|
if (newVal == null) {
|
|
return
|
|
}
|
|
return queueRescale(newVal)
|
|
})
|
|
|
|
// scope.$watch 'position', (newVal, oldVal) ->
|
|
// console.log 'got change in position watcher', newVal, oldVal
|
|
|
|
scope.$watch('forceCheck', function(newVal, oldVal) {
|
|
// console.log 'forceCheck', newVal, oldVal
|
|
if (newVal == null) {
|
|
return
|
|
}
|
|
scope.adjustingScroll = true // temporarily disable scroll
|
|
return queueRescale(scope.scale)
|
|
})
|
|
|
|
scope.$watch(
|
|
'parentSize',
|
|
function(newVal, oldVal) {
|
|
// console.log 'XXX in parentSize watch', newVal, oldVal
|
|
// if newVal == oldVal
|
|
// console.log 'returning because old and new are the same'
|
|
// return
|
|
// return unless oldVal?
|
|
// console.log 'XXX calling setScale in parentSize watcher'
|
|
if (newVal == null) {
|
|
return
|
|
}
|
|
return queueRescale(scope.scale)
|
|
},
|
|
true
|
|
)
|
|
|
|
// scope.$watch 'elementWidth', (newVal, oldVal) ->
|
|
// console.log '*** watch INTERVAL element width is', newVal, oldVal
|
|
|
|
scope.$watch('pleaseScrollTo', function(newVal, oldVal) {
|
|
// console.log 'got request to ScrollTo', newVal, 'oldVal', oldVal
|
|
if (newVal == null) {
|
|
return
|
|
}
|
|
scope.adjustingScroll = true // temporarily disable scroll
|
|
// handler while we reposition
|
|
$(element).scrollTop(newVal)
|
|
return (scope.pleaseScrollTo = undefined)
|
|
})
|
|
|
|
scope.$watch('pleaseJumpTo', function(newPosition, oldPosition) {
|
|
// console.log 'in pleaseJumpTo', newPosition, oldPosition
|
|
if (newPosition == null) {
|
|
return
|
|
}
|
|
return ctrl.setPdfPosition(scope.pages[newPosition.page - 1], newPosition)
|
|
})
|
|
|
|
scope.$watch('navigateTo', function(newVal, oldVal) {
|
|
if (newVal == null) {
|
|
return
|
|
}
|
|
// console.log 'got request to navigate to', newVal, 'oldVal', oldVal
|
|
scope.navigateTo = undefined
|
|
// console.log 'navigate to', newVal
|
|
// console.log 'look up page num'
|
|
return scope.document.getDestination(newVal.dest).then(r =>
|
|
// console.log 'need to go to', r
|
|
// console.log 'page ref is', r[0]
|
|
scope.document.getPageIndex(r[0]).then(function(pidx) {
|
|
// console.log 'page num is', pidx
|
|
const page = scope.pages[pidx]
|
|
return scope.document
|
|
.getPdfViewport(page.pageNum)
|
|
.then(function(viewport) {
|
|
// console.log 'got viewport', viewport
|
|
const coords = viewport.convertToViewportPoint(r[2], r[3])
|
|
// console.log 'viewport position', coords
|
|
// console.log 'r is', r, 'r[1]', r[1], 'r[1].name', r[1].name
|
|
if (r[1].name === 'XYZ') {
|
|
// console.log 'XYZ:', r[2], r[3]
|
|
const newPosition = {
|
|
page: pidx,
|
|
offset: { top: r[3], left: r[2] }
|
|
}
|
|
return ctrl.setPdfPosition(scope.pages[pidx], newPosition)
|
|
}
|
|
})
|
|
})
|
|
)
|
|
}) // XXX?
|
|
|
|
scope.$watch('highlights', function(areas) {
|
|
// console.log 'got HIGHLIGHTS in pdfViewer', areas
|
|
if (areas == null) {
|
|
return
|
|
}
|
|
// console.log 'areas are', areas
|
|
const highlights = Array.from(areas || []).map(area => ({
|
|
page: area.page - 1,
|
|
highlight: {
|
|
left: area.h,
|
|
top: area.v,
|
|
height: area.height,
|
|
width: area.width
|
|
}
|
|
}))
|
|
// console.log 'highlights', highlights
|
|
|
|
if (!highlights.length) {
|
|
return
|
|
}
|
|
|
|
scope.$broadcast('pdf:highlights', areas)
|
|
|
|
const first = highlights[0]
|
|
|
|
// switching between split and full pdf views can cause
|
|
// highlights to appear before rendering
|
|
if (!scope.pages) {
|
|
return // ignore highlight scroll if still rendering
|
|
}
|
|
|
|
const pageNum =
|
|
scope.pages[first.page] != null
|
|
? scope.pages[first.page].pageNum
|
|
: undefined
|
|
|
|
if (pageNum == null) {
|
|
return // ignore highlight scroll if page not found
|
|
}
|
|
|
|
// use a visual offset of 72pt to match the offset in PdfController syncToCode
|
|
return scope.document.getPdfViewport(pageNum).then(function(viewport) {
|
|
const position = {
|
|
page: first.page,
|
|
offset: {
|
|
left: first.highlight.left,
|
|
top:
|
|
viewport.viewBox[3] -
|
|
first.highlight.top +
|
|
first.highlight.height +
|
|
72
|
|
}
|
|
}
|
|
return ctrl.setPdfPosition(scope.pages[first.page], position)
|
|
})
|
|
})
|
|
|
|
return scope.$on('$destroy', function() {
|
|
// console.log 'handle pdfng directive destroy'
|
|
if (elementTimer != null) {
|
|
clearTimeout(elementTimer)
|
|
}
|
|
if (layoutTimer != null) {
|
|
clearTimeout(layoutTimer)
|
|
}
|
|
if (rescaleTimer != null) {
|
|
clearTimeout(rescaleTimer)
|
|
}
|
|
if (spinnerTimer != null) {
|
|
return clearTimeout(spinnerTimer)
|
|
}
|
|
})
|
|
}
|
|
}))
|
|
|
|
function __range__(left, right, inclusive) {
|
|
let range = []
|
|
let ascending = left < right
|
|
let end = !inclusive ? right : ascending ? right + 1 : right - 1
|
|
for (let i = left; ascending ? i < end : i > end; ascending ? i++ : i--) {
|
|
range.push(i)
|
|
}
|
|
return range
|
|
}
|
|
function __guard__(value, transform) {
|
|
return typeof value !== 'undefined' && value !== null
|
|
? transform(value)
|
|
: undefined
|
|
}
|