overleaf/services/web/frontend/js/ide/pdfng/directives/pdfPage.js
Jakob Ackermann a6f05109a3 Merge pull request #5352 from overleaf/jpa-no-var
[misc] fix eslint violations for `no-var`

GitOrigin-RevId: c52e82f3a8a993b8662cc5aa56e7b95ca3c55832
2021-10-27 08:03:00 +00:00

166 lines
5.2 KiB
JavaScript

/* eslint-disable
max-len,
new-cap,
no-return-assign,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS101: Remove unnecessary use of Array.from
* DS102: Remove unnecessary code created because of implicit returns
* DS205: Consider reworking code to avoid use of IIFEs
* DS207: Consider shorter variations of null checks
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
import App from '../../../base'
export default App.directive(
'pdfPage',
($timeout, pdfHighlights, pdfSpinner) => ({
require: '^pdfViewer',
template: `\
<div class="plv-page-view page-view">
<div class="pdf-canvas pdfng-empty"></div>
<div class="plv-text-layer text-layer"></div>
<div class="plv-annotations-layer annotations-layer"></div>
<div class="plv-highlights-layer highlights-layer"></div>
</div>\
`,
link(scope, element, attrs, ctrl) {
const canvasElement = $(element).find('.pdf-canvas')
const textElement = $(element).find('.text-layer')
const annotationsElement = $(element).find('.annotations-layer')
const highlightsElement = $(element).find('.highlights-layer')
const updatePageSize = function (size) {
const h = Math.floor(size[0])
const w = Math.floor(size[1])
element.height(h)
element.width(w)
canvasElement.height(h)
canvasElement.width(w)
return (scope.page.sized = true)
}
// keep track of our page element, so we can access it in the
// parent with scope.pages[i].element, and the contained
// elements for each part
scope.page.element = element
scope.page.elementChildren = {
canvas: canvasElement,
text: textElement,
annotations: annotationsElement,
highlights: highlightsElement,
container: element,
}
if (!scope.page.sized) {
if (scope.defaultPageSize != null) {
updatePageSize(scope.defaultPageSize)
} else {
// shouldn't get here - the default page size should now
// always be set before redraw is called
const handler = scope.$watch(
'defaultPageSize',
function (defaultPageSize) {
if (defaultPageSize == null) {
return
}
updatePageSize(defaultPageSize)
return handler()
}
)
}
}
if (scope.page.current) {
// console.log 'we must scroll to this page', scope.page.pageNum, 'at position', scope.page.position
// this is the current page, we want to scroll it into view
// and render it immediately
scope.document.renderPage(scope.page)
ctrl.setPdfPosition(scope.page, scope.page.position)
}
element.on('dblclick', function (e) {
const offset = $(element).find('.pdf-canvas').offset()
const dx = e.pageX - offset.left
const dy = e.pageY - offset.top
return scope.document
.getPdfViewport(scope.page.pageNum)
.then(function (viewport) {
const pdfPoint = viewport.convertToPdfPoint(dx, dy)
const event = {
page: scope.page.pageNum,
x: pdfPoint[0],
y: viewport.viewBox[3] - pdfPoint[1],
}
return scope.$emit('pdfDoubleClick', event)
})
})
const highlightsLayer = new pdfHighlights({
highlights: highlightsElement,
})
scope.$on('pdf:highlights', function (event, highlights) {
let h
if (highlights == null) {
return
}
if (!(highlights.length > 0)) {
return
}
if (scope.timeoutHandler) {
$timeout.cancel(scope.timeoutHandler)
highlightsLayer.clearHighlights()
scope.timeoutHandler = null
}
// console.log 'got highlight watch in pdfPage', scope.page
const pageHighlights = (() => {
const result = []
for (h of Array.from(highlights)) {
if (h.page === scope.page.pageNum) {
result.push(h)
}
}
return result
})()
if (!pageHighlights.length) {
return
}
scope.document.getPdfViewport(scope.page.pageNum).then(viewport =>
(() => {
const result1 = []
for (const hl of Array.from(pageHighlights)) {
// console.log 'adding highlight', h, viewport
const top = viewport.viewBox[3] - hl.v
result1.push(
highlightsLayer.addHighlight(
viewport,
hl.h,
top,
hl.width,
hl.height
)
)
}
return result1
})()
)
return (scope.timeoutHandler = $timeout(function () {
highlightsLayer.clearHighlights()
return (scope.timeoutHandler = null)
}, 1000))
})
return scope.$on('$destroy', function () {
if (scope.timeoutHandler != null) {
$timeout.cancel(scope.timeoutHandler)
return highlightsLayer.clearHighlights()
}
})
},
})
)