9d62ff80ca
Considering how extremely simple this patch turned out to be, I'm almost worried that I completely misunderstood why the current code looks like it does...
681 lines
22 KiB
JavaScript
681 lines
22 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* globals PDFJS, pdfjsSharedUtil */
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'use strict';
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var WAITING_TIME = 100; // ms
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var PDF_TO_CSS_UNITS = 96.0 / 72.0;
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/**
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* @class
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*/
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var LinkServiceMock = (function LinkServiceMockClosure() {
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function LinkServiceMock() {}
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LinkServiceMock.prototype = {
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get page() {
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return 0;
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},
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set page(value) {},
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navigateTo: function (dest) {},
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getDestinationHash: function (dest) {
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return '#';
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},
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getAnchorUrl: function (hash) {
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return '#';
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},
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setHash: function (hash) {},
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executeNamedAction: function (action) {},
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onFileAttachmentAnnotation: function (params) {},
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cachePageRef: function (pageNum, pageRef) {},
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};
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return LinkServiceMock;
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})();
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/**
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* @class
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*/
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var rasterizeTextLayer = (function rasterizeTextLayerClosure() {
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var SVG_NS = 'http://www.w3.org/2000/svg';
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var textLayerStylePromise = null;
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function getTextLayerStyle() {
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if (textLayerStylePromise) {
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return textLayerStylePromise;
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}
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textLayerStylePromise = new Promise(function (resolve) {
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var xhr = new XMLHttpRequest();
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xhr.open('GET', './text_layer_test.css');
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xhr.onload = function () {
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resolve(xhr.responseText);
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};
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xhr.send(null);
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});
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return textLayerStylePromise;
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}
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function rasterizeTextLayer(ctx, viewport, textContent,
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enhanceTextSelection) {
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return new Promise(function (resolve) {
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// Building SVG with size of the viewport.
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var svg = document.createElementNS(SVG_NS, 'svg:svg');
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svg.setAttribute('width', viewport.width + 'px');
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svg.setAttribute('height', viewport.height + 'px');
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// items are transformed to have 1px font size
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svg.setAttribute('font-size', 1);
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// Adding element to host our HTML (style + text layer div).
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var foreignObject = document.createElementNS(SVG_NS, 'svg:foreignObject');
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foreignObject.setAttribute('x', '0');
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foreignObject.setAttribute('y', '0');
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foreignObject.setAttribute('width', viewport.width + 'px');
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foreignObject.setAttribute('height', viewport.height + 'px');
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var style = document.createElement('style');
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var stylePromise = getTextLayerStyle();
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foreignObject.appendChild(style);
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var div = document.createElement('div');
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div.className = 'textLayer';
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foreignObject.appendChild(div);
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// Rendering text layer as HTML.
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var task = PDFJS.renderTextLayer({
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textContent: textContent,
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container: div,
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viewport: viewport,
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enhanceTextSelection: enhanceTextSelection,
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});
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Promise.all([stylePromise, task.promise]).then(function (results) {
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task.expandTextDivs(true);
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style.textContent = results[0];
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svg.appendChild(foreignObject);
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// We need to have UTF-8 encoded XML.
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var svg_xml = unescape(encodeURIComponent(
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(new XMLSerializer()).serializeToString(svg)));
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var img = new Image();
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img.src = 'data:image/svg+xml;base64,' + btoa(svg_xml);
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img.onload = function () {
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ctx.drawImage(img, 0, 0);
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resolve();
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};
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});
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});
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}
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return rasterizeTextLayer;
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})();
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/**
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* @class
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*/
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var rasterizeAnnotationLayer = (function rasterizeAnnotationLayerClosure() {
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var SVG_NS = 'http://www.w3.org/2000/svg';
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var annotationLayerStylePromise = null;
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function getAnnotationLayerStyle() {
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if (annotationLayerStylePromise) {
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return annotationLayerStylePromise;
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}
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annotationLayerStylePromise = new Promise(function (resolve) {
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var xhr = new XMLHttpRequest();
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xhr.open('GET', './annotation_layer_test.css');
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xhr.onload = function () {
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resolve(xhr.responseText);
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};
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xhr.send(null);
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});
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return annotationLayerStylePromise;
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}
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function inlineAnnotationImages(images) {
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var imagePromises = [];
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for (var i = 0, ii = images.length; i < ii; i++) {
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var imagePromise = new Promise(function(resolve) {
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var xhr = new XMLHttpRequest();
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xhr.responseType = 'blob';
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xhr.onload = function() {
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var reader = new FileReader();
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reader.onloadend = function() {
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resolve(reader.result);
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};
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reader.readAsDataURL(xhr.response);
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};
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xhr.onerror = function() {
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resolve('');
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};
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xhr.open('GET', images[i].src);
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xhr.send();
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});
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imagePromises.push(imagePromise);
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}
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return imagePromises;
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}
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function rasterizeAnnotationLayer(ctx, viewport, annotations, page,
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renderInteractiveForms) {
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return new Promise(function (resolve) {
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// Building SVG with size of the viewport.
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var svg = document.createElementNS(SVG_NS, 'svg:svg');
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svg.setAttribute('width', viewport.width + 'px');
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svg.setAttribute('height', viewport.height + 'px');
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// Adding element to host our HTML (style + annotation layer div).
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var foreignObject = document.createElementNS(SVG_NS, 'svg:foreignObject');
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foreignObject.setAttribute('x', '0');
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foreignObject.setAttribute('y', '0');
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foreignObject.setAttribute('width', viewport.width + 'px');
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foreignObject.setAttribute('height', viewport.height + 'px');
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var style = document.createElement('style');
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var stylePromise = getAnnotationLayerStyle();
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foreignObject.appendChild(style);
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var div = document.createElement('div');
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div.className = 'annotationLayer';
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// Rendering annotation layer as HTML.
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stylePromise.then(function (styles) {
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style.textContent = styles;
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var annotation_viewport = viewport.clone({ dontFlip: true });
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var parameters = {
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viewport: annotation_viewport,
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div: div,
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annotations: annotations,
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page: page,
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linkService: new LinkServiceMock(),
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renderInteractiveForms: renderInteractiveForms,
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};
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PDFJS.AnnotationLayer.render(parameters);
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// Inline SVG images from text annotations.
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var images = div.getElementsByTagName('img');
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var imagePromises = inlineAnnotationImages(images);
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var converted = Promise.all(imagePromises).then(function(data) {
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for (var i = 0, ii = data.length; i < ii; i++) {
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images[i].src = data[i];
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}
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});
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foreignObject.appendChild(div);
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svg.appendChild(foreignObject);
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// We need to have UTF-8 encoded XML.
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converted.then(function() {
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var svg_xml = unescape(encodeURIComponent(
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(new XMLSerializer()).serializeToString(svg)));
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var img = new Image();
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img.src = 'data:image/svg+xml;base64,' + btoa(svg_xml);
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img.onload = function () {
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ctx.drawImage(img, 0, 0);
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resolve();
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};
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});
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});
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});
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}
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return rasterizeAnnotationLayer;
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})();
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/**
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* @typedef {Object} DriverOptions
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* @property {HTMLSpanElement} inflight - Field displaying the number of
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* inflight requests.
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* @property {HTMLInputElement} disableScrolling - Checkbox to disable
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* automatic scrolling of the output container.
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* @property {HTMLPreElement} output - Container for all output messages.
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* @property {HTMLDivElement} end - Container for a completion message.
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*/
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/**
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* @class
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*/
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var Driver = (function DriverClosure() { // eslint-disable-line no-unused-vars
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/**
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* @constructs Driver
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* @param {DriverOptions} options
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*/
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function Driver(options) {
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// Configure the global PDFJS object
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PDFJS.workerSrc = '../src/worker_loader.js';
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PDFJS.cMapPacked = true;
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PDFJS.cMapUrl = '../external/bcmaps/';
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PDFJS.enableStats = true;
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PDFJS.imageResourcesPath = '/web/images/';
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// Opt-in to using the latest API.
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PDFJS.pdfjsNext = true;
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// Set the passed options
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this.inflight = options.inflight;
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this.disableScrolling = options.disableScrolling;
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this.output = options.output;
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this.end = options.end;
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// Set parameters from the query string
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var parameters = this._getQueryStringParameters();
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this.browser = parameters.browser;
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this.manifestFile = parameters.manifestFile;
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this.appPath = parameters.path;
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this.delay = (parameters.delay | 0) || 0;
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this.inFlightRequests = 0;
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this.testFilter = parameters.testFilter ?
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JSON.parse(parameters.testFilter) : [];
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// Create a working canvas
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this.canvas = document.createElement('canvas');
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}
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Driver.prototype = {
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_getQueryStringParameters: function Driver_getQueryStringParameters() {
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var queryString = window.location.search.substring(1);
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var values = queryString.split('&');
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var parameters = {};
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for (var i = 0, ii = values.length; i < ii; i++) {
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var value = values[i].split('=');
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parameters[unescape(value[0])] = unescape(value[1]);
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}
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return parameters;
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},
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run: function Driver_run() {
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var self = this;
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window.onerror = function(message, source, line, column, error) {
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self._info('Error: ' + message + ' Script: ' + source + ' Line: ' +
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line + ' Column: ' + column + ' StackTrace: ' + error);
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};
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this._info('User agent: ' + navigator.userAgent);
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this._log('Harness thinks this browser is "' + this.browser +
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'" with path "' + this.appPath + '"\n');
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this._log('Fetching manifest "' + this.manifestFile + '"... ');
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var r = new XMLHttpRequest();
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r.open('GET', this.manifestFile, false);
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r.onreadystatechange = function() {
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if (r.readyState === 4) {
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self._log('done\n');
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self.manifest = JSON.parse(r.responseText);
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if (self.testFilter && self.testFilter.length) {
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self.manifest = self.manifest.filter(function(item) {
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return self.testFilter.indexOf(item.id) !== -1;
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});
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}
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self.currentTask = 0;
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self._nextTask();
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}
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};
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if (this.delay > 0) {
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this._log('\nDelaying for ' + this.delay + ' ms...\n');
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}
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// When gathering the stats the numbers seem to be more reliable
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// if the browser is given more time to start.
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setTimeout(function() {
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r.send(null);
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}, this.delay);
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},
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_nextTask: function Driver_nextTask() {
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var self = this;
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var failure = '';
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this._cleanup();
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if (this.currentTask === this.manifest.length) {
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this._done();
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return;
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}
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var task = this.manifest[this.currentTask];
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task.round = 0;
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task.pageNum = task.firstPage || 1;
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task.stats = { times: [] };
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this._log('Loading file "' + task.file + '"\n');
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var absoluteUrl = new URL(task.file, window.location).href;
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PDFJS.disableRange = task.disableRange;
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PDFJS.disableAutoFetch = !task.enableAutoFetch;
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try {
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PDFJS.getDocument({
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url: absoluteUrl,
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password: task.password
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}).then(function(doc) {
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task.pdfDoc = doc;
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self._nextPage(task, failure);
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}, function(e) {
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failure = 'Loading PDF document: ' + e;
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self._nextPage(task, failure);
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});
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return;
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} catch (e) {
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failure = 'Loading PDF document: ' + this._exceptionToString(e);
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}
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this._nextPage(task, failure);
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},
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_cleanup: function Driver_cleanup() {
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// Clear out all the stylesheets since a new one is created for each font.
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while (document.styleSheets.length > 0) {
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var styleSheet = document.styleSheets[0];
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while (styleSheet.cssRules.length > 0) {
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styleSheet.deleteRule(0);
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}
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var ownerNode = styleSheet.ownerNode;
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ownerNode.parentNode.removeChild(ownerNode);
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}
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var body = document.body;
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while (body.lastChild !== this.end) {
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body.removeChild(body.lastChild);
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}
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// Wipe out the link to the pdfdoc so it can be GC'ed.
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for (var i = 0; i < this.manifest.length; i++) {
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if (this.manifest[i].pdfDoc) {
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this.manifest[i].pdfDoc.destroy();
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delete this.manifest[i].pdfDoc;
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}
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}
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},
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_exceptionToString: function Driver_exceptionToString(e) {
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if (typeof e !== 'object') {
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return String(e);
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}
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if (!('message' in e)) {
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return JSON.stringify(e);
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}
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return e.message + ('stack' in e ? ' at ' + e.stack.split('\n')[0] : '');
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},
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_getLastPageNumber: function Driver_getLastPageNumber(task) {
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if (!task.pdfDoc) {
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return task.firstPage || 1;
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}
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var lastPageNumber = task.lastPage || 0;
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if (!lastPageNumber || lastPageNumber > task.pdfDoc.numPages) {
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lastPageNumber = task.pdfDoc.numPages;
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}
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return lastPageNumber;
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},
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_nextPage: function Driver_nextPage(task, loadError) {
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var self = this;
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var failure = loadError || '';
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var ctx;
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if (!task.pdfDoc) {
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var dataUrl = this.canvas.toDataURL('image/png');
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this._sendResult(dataUrl, task, failure, function () {
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self._log('done' + (failure ? ' (failed !: ' + failure + ')' : '') +
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'\n');
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self.currentTask++;
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self._nextTask();
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});
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return;
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}
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if (task.pageNum > this._getLastPageNumber(task)) {
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if (++task.round < task.rounds) {
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this._log(' Round ' + (1 + task.round) + '\n');
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task.pageNum = task.firstPage || 1;
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} else {
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this.currentTask++;
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this._nextTask();
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return;
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}
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}
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if (task.skipPages && task.skipPages.indexOf(task.pageNum) >= 0) {
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this._log(' Skipping page ' + task.pageNum + '/' +
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task.pdfDoc.numPages + '...\n');
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task.pageNum++;
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this._nextPage(task);
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return;
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}
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if (!failure) {
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try {
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this._log(' Loading page ' + task.pageNum + '/' +
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task.pdfDoc.numPages + '... ');
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this.canvas.mozOpaque = true;
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ctx = this.canvas.getContext('2d', {alpha: false});
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task.pdfDoc.getPage(task.pageNum).then(function(page) {
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var viewport = page.getViewport(PDF_TO_CSS_UNITS);
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self.canvas.width = viewport.width;
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self.canvas.height = viewport.height;
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self._clearCanvas();
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// Initialize various `eq` test subtypes, see comment below.
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var renderAnnotations = false, renderForms = false;
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var textLayerCanvas, annotationLayerCanvas;
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var initPromise;
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if (task.type === 'text') {
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// Using a dummy canvas for PDF context drawing operations
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textLayerCanvas = self.textLayerCanvas;
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if (!textLayerCanvas) {
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textLayerCanvas = document.createElement('canvas');
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self.textLayerCanvas = textLayerCanvas;
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}
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textLayerCanvas.width = viewport.width;
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textLayerCanvas.height = viewport.height;
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var textLayerContext = textLayerCanvas.getContext('2d');
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textLayerContext.clearRect(0, 0,
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textLayerCanvas.width, textLayerCanvas.height);
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var enhanceText = !!task.enhance;
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// The text builder will draw its content on the test canvas
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initPromise = page.getTextContent({
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normalizeWhitespace: true,
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}).then(function(textContent) {
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return rasterizeTextLayer(textLayerContext, viewport,
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textContent, enhanceText);
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});
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} else {
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textLayerCanvas = null;
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// We fetch the `eq` specific test subtypes here, to avoid
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// accidentally changing the behaviour for other types of tests.
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renderAnnotations = !!task.annotations;
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renderForms = !!task.forms;
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// Render the annotation layer if necessary.
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if (renderAnnotations || renderForms) {
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// Create a dummy canvas for the drawing operations.
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annotationLayerCanvas = self.annotationLayerCanvas;
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if (!annotationLayerCanvas) {
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annotationLayerCanvas = document.createElement('canvas');
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self.annotationLayerCanvas = annotationLayerCanvas;
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}
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annotationLayerCanvas.width = viewport.width;
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annotationLayerCanvas.height = viewport.height;
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var annotationLayerContext =
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annotationLayerCanvas.getContext('2d');
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annotationLayerContext.clearRect(0, 0,
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annotationLayerCanvas.width, annotationLayerCanvas.height);
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// The annotation builder will draw its content on the canvas.
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initPromise =
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page.getAnnotations({ intent: 'display' }).then(
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function(annotations) {
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return rasterizeAnnotationLayer(annotationLayerContext,
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viewport, annotations,
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page, renderForms);
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});
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} else {
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annotationLayerCanvas = null;
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initPromise = Promise.resolve();
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}
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}
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var renderContext = {
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canvasContext: ctx,
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viewport: viewport,
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renderInteractiveForms: renderForms,
|
|
};
|
|
var completeRender = (function(error) {
|
|
// if text layer is present, compose it on top of the page
|
|
if (textLayerCanvas) {
|
|
ctx.save();
|
|
ctx.globalCompositeOperation = 'screen';
|
|
ctx.fillStyle = 'rgb(128, 255, 128)'; // making it green
|
|
ctx.fillRect(0, 0, viewport.width, viewport.height);
|
|
ctx.restore();
|
|
ctx.drawImage(textLayerCanvas, 0, 0);
|
|
}
|
|
// If we have annotation layer, compose it on top of the page.
|
|
if (annotationLayerCanvas) {
|
|
ctx.drawImage(annotationLayerCanvas, 0, 0);
|
|
}
|
|
page.cleanup();
|
|
task.stats = page.stats;
|
|
page.stats = new pdfjsSharedUtil.StatTimer();
|
|
self._snapshot(task, error);
|
|
});
|
|
initPromise.then(function () {
|
|
page.render(renderContext).promise.then(function() {
|
|
completeRender(false);
|
|
},
|
|
function(error) {
|
|
completeRender('render : ' + error);
|
|
});
|
|
});
|
|
},
|
|
function(error) {
|
|
self._snapshot(task, 'render : ' + error);
|
|
});
|
|
} catch (e) {
|
|
failure = 'page setup : ' + this._exceptionToString(e);
|
|
this._snapshot(task, failure);
|
|
}
|
|
}
|
|
},
|
|
|
|
_clearCanvas: function Driver_clearCanvas() {
|
|
var ctx = this.canvas.getContext('2d', {alpha: false});
|
|
ctx.beginPath();
|
|
ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
|
|
},
|
|
|
|
_snapshot: function Driver_snapshot(task, failure) {
|
|
var self = this;
|
|
this._log('Snapshotting... ');
|
|
|
|
var dataUrl = this.canvas.toDataURL('image/png');
|
|
this._sendResult(dataUrl, task, failure, function () {
|
|
self._log('done' + (failure ? ' (failed !: ' + failure + ')' : '') +
|
|
'\n');
|
|
task.pageNum++;
|
|
self._nextPage(task);
|
|
});
|
|
},
|
|
|
|
_quit: function Driver_quit() {
|
|
this._log('Done !');
|
|
this.end.textContent = 'Tests finished. Close this window!';
|
|
|
|
// Send the quit request
|
|
var r = new XMLHttpRequest();
|
|
r.open('POST', '/tellMeToQuit?path=' + escape(this.appPath), false);
|
|
r.onreadystatechange = function(e) {
|
|
if (r.readyState === 4) {
|
|
window.close();
|
|
}
|
|
};
|
|
r.send(null);
|
|
},
|
|
|
|
_info: function Driver_info(message) {
|
|
this._send('/info', JSON.stringify({
|
|
browser: this.browser,
|
|
message: message
|
|
}));
|
|
},
|
|
|
|
_log: function Driver_log(message) {
|
|
// Using insertAdjacentHTML yields a large performance gain and
|
|
// reduces runtime significantly.
|
|
if (this.output.insertAdjacentHTML) {
|
|
this.output.insertAdjacentHTML('BeforeEnd', message);
|
|
} else {
|
|
this.output.textContent += message;
|
|
}
|
|
|
|
if (message.lastIndexOf('\n') >= 0 && !this.disableScrolling.checked) {
|
|
// Scroll to the bottom of the page
|
|
this.output.scrollTop = this.output.scrollHeight;
|
|
}
|
|
},
|
|
|
|
_done: function Driver_done() {
|
|
if (this.inFlightRequests > 0) {
|
|
this.inflight.textContent = this.inFlightRequests;
|
|
setTimeout(this._done.bind(this), WAITING_TIME);
|
|
} else {
|
|
setTimeout(this._quit.bind(this), WAITING_TIME);
|
|
}
|
|
},
|
|
|
|
_sendResult: function Driver_sendResult(snapshot, task, failure,
|
|
callback) {
|
|
var result = JSON.stringify({
|
|
browser: this.browser,
|
|
id: task.id,
|
|
numPages: task.pdfDoc ?
|
|
(task.lastPage || task.pdfDoc.numPages) : 0,
|
|
lastPageNum: this._getLastPageNumber(task),
|
|
failure: failure,
|
|
file: task.file,
|
|
round: task.round,
|
|
page: task.pageNum,
|
|
snapshot: snapshot,
|
|
stats: task.stats.times
|
|
});
|
|
this._send('/submit_task_results', result, callback);
|
|
},
|
|
|
|
_send: function Driver_send(url, message, callback) {
|
|
var self = this;
|
|
var r = new XMLHttpRequest();
|
|
r.open('POST', url, true);
|
|
r.setRequestHeader('Content-Type', 'application/json');
|
|
r.onreadystatechange = function(e) {
|
|
if (r.readyState === 4) {
|
|
self.inFlightRequests--;
|
|
|
|
// Retry until successful
|
|
if (r.status !== 200) {
|
|
setTimeout(function() {
|
|
self._send(url, message);
|
|
});
|
|
}
|
|
if (callback) {
|
|
callback();
|
|
}
|
|
}
|
|
};
|
|
this.inflight.textContent = this.inFlightRequests++;
|
|
r.send(message);
|
|
}
|
|
};
|
|
|
|
return Driver;
|
|
})();
|