Yury Delendik
11 years ago
5 changed files with 208 additions and 115 deletions
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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ |
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/* Copyright 2014 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, CustomStyle, mozL10n */ |
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'use strict'; |
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/** |
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* @typedef {Object} AnnotationsLayerBuilderOptions |
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* @property {HTMLDivElement} pageDiv |
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* @property {PDFPage} pdfPage |
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* @property {IPDFLinkService} linkService |
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*/ |
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/** |
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* @class |
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*/ |
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var AnnotationsLayerBuilder = (function AnnotationsLayerBuilderClosure() { |
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/** |
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* @param {AnnotationsLayerBuilderOptions} options |
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* @constructs AnnotationsLayerBuilder |
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*/ |
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function AnnotationsLayerBuilder(options) { |
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this.pageDiv = options.pageDiv; |
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this.pdfPage = options.pdfPage; |
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this.linkService = options.linkService; |
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this.div = null; |
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} |
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AnnotationsLayerBuilder.prototype = |
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/** @lends AnnotationsLayerBuilder.prototype */ { |
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/** |
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* @param {PageViewport} viewport |
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*/ |
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setupAnnotations: |
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function AnnotationsLayerBuilder_setupAnnotations(viewport) { |
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function bindLink(link, dest) { |
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link.href = linkService.getDestinationHash(dest); |
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link.onclick = function annotationsLayerBuilderLinksOnclick() { |
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if (dest) { |
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linkService.navigateTo(dest); |
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} |
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return false; |
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}; |
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if (dest) { |
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link.className = 'internalLink'; |
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} |
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} |
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function bindNamedAction(link, action) { |
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link.href = linkService.getAnchorUrl(''); |
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link.onclick = function annotationsLayerBuilderNamedActionOnClick() { |
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linkService.executeNamedAction(action); |
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return false; |
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}; |
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link.className = 'internalLink'; |
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} |
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var linkService = this.linkService; |
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var pdfPage = this.pdfPage; |
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var self = this; |
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pdfPage.getAnnotations().then(function (annotationsData) { |
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viewport = viewport.clone({ dontFlip: true }); |
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var transform = viewport.transform; |
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var transformStr = 'matrix(' + transform.join(',') + ')'; |
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var data, element, i, ii; |
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if (self.div) { |
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// If an annotationLayer already exists, refresh its children's
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// transformation matrices
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for (i = 0, ii = annotationsData.length; i < ii; i++) { |
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data = annotationsData[i]; |
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element = self.div.querySelector( |
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'[data-annotation-id="' + data.id + '"]'); |
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if (element) { |
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CustomStyle.setProp('transform', element, transformStr); |
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} |
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} |
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// See PDFPageView.reset()
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self.div.removeAttribute('hidden'); |
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} else { |
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for (i = 0, ii = annotationsData.length; i < ii; i++) { |
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data = annotationsData[i]; |
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if (!data || !data.hasHtml) { |
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continue; |
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} |
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element = PDFJS.AnnotationUtils.getHtmlElement(data, |
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pdfPage.commonObjs); |
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element.setAttribute('data-annotation-id', data.id); |
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mozL10n.translate(element); |
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var rect = data.rect; |
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var view = pdfPage.view; |
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rect = PDFJS.Util.normalizeRect([ |
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rect[0], |
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view[3] - rect[1] + view[1], |
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rect[2], |
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view[3] - rect[3] + view[1] |
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]); |
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element.style.left = rect[0] + 'px'; |
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element.style.top = rect[1] + 'px'; |
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element.style.position = 'absolute'; |
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CustomStyle.setProp('transform', element, transformStr); |
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var transformOriginStr = -rect[0] + 'px ' + -rect[1] + 'px'; |
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CustomStyle.setProp('transformOrigin', element, transformOriginStr); |
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if (data.subtype === 'Link' && !data.url) { |
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var link = element.getElementsByTagName('a')[0]; |
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if (link) { |
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if (data.action) { |
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bindNamedAction(link, data.action); |
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} else { |
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bindLink(link, ('dest' in data) ? data.dest : null); |
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} |
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} |
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} |
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if (!self.div) { |
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var annotationLayerDiv = document.createElement('div'); |
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annotationLayerDiv.className = 'annotationLayer'; |
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self.pageDiv.appendChild(annotationLayerDiv); |
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self.div = annotationLayerDiv; |
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} |
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self.div.appendChild(element); |
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} |
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} |
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}); |
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}, |
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hide: function () { |
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if (!this.div) { |
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return; |
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} |
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this.div.setAttribute('hidden', 'true'); |
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} |
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}; |
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return AnnotationsLayerBuilder; |
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})(); |
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