| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | /* Copyright 2017 Mozilla Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ 'use strict'; Object.defineProperty(exports, "__esModule", { value: true }); exports.PDFThumbnailViewer = undefined; var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); var _ui_utils = require('./ui_utils'); var _pdf_thumbnail_view = require('./pdf_thumbnail_view'); function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } var THUMBNAIL_SCROLL_MARGIN = -19; var PDFThumbnailViewer = function () { function PDFThumbnailViewer(_ref) { var container = _ref.container, linkService = _ref.linkService, renderingQueue = _ref.renderingQueue, _ref$l10n = _ref.l10n, l10n = _ref$l10n === undefined ? _ui_utils.NullL10n : _ref$l10n; _classCallCheck(this, PDFThumbnailViewer); this.container = container; this.linkService = linkService; this.renderingQueue = renderingQueue; this.l10n = l10n; this.scroll = (0, _ui_utils.watchScroll)(this.container, this._scrollUpdated.bind(this)); this._resetView(); } _createClass(PDFThumbnailViewer, [{ key: '_scrollUpdated', value: function _scrollUpdated() { this.renderingQueue.renderHighestPriority(); } }, { key: 'getThumbnail', value: function getThumbnail(index) { return this._thumbnails[index]; } }, { key: '_getVisibleThumbs', value: function _getVisibleThumbs() { return (0, _ui_utils.getVisibleElements)(this.container, this._thumbnails); } }, { key: 'scrollThumbnailIntoView', value: function scrollThumbnailIntoView(page) { var selected = document.querySelector('.thumbnail.selected'); if (selected) { selected.classList.remove('selected'); } var thumbnail = document.querySelector('div.thumbnail[data-page-number="' + page + '"]'); if (thumbnail) { thumbnail.classList.add('selected'); } var visibleThumbs = this._getVisibleThumbs(); var numVisibleThumbs = visibleThumbs.views.length; if (numVisibleThumbs > 0) { var first = visibleThumbs.first.id; var last = numVisibleThumbs > 1 ? visibleThumbs.last.id : first; var shouldScroll = false; if (page <= first || page >= last) { shouldScroll = true; } else { visibleThumbs.views.some(function (view) { if (view.id !== page) { return false; } shouldScroll = view.percent < 100; return true; }); } if (shouldScroll) { (0, _ui_utils.scrollIntoView)(thumbnail, { top: THUMBNAIL_SCROLL_MARGIN }); } } } }, { key: 'cleanup', value: function cleanup() { _pdf_thumbnail_view.PDFThumbnailView.cleanup(); } }, { key: '_resetView', value: function _resetView() { this._thumbnails = []; this._pageLabels = null; this._pagesRotation = 0; this._pagesRequests = []; this.container.textContent = ''; } }, { key: 'setDocument', value: function setDocument(pdfDocument) { var _this = this; if (this.pdfDocument) { this._cancelRendering(); this._resetView(); } this.pdfDocument = pdfDocument; if (!pdfDocument) { return; } pdfDocument.getPage(1).then(function (firstPage) { var pagesCount = pdfDocument.numPages; var viewport = firstPage.getViewport(1.0); for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) { var thumbnail = new _pdf_thumbnail_view.PDFThumbnailView({ container: _this.container, id: pageNum, defaultViewport: viewport.clone(), linkService: _this.linkService, renderingQueue: _this.renderingQueue, disableCanvasToImageConversion: false, l10n: _this.l10n }); _this._thumbnails.push(thumbnail); } }).catch(function (reason) { console.error('Unable to initialize thumbnail viewer', reason); }); } }, { key: '_cancelRendering', value: function _cancelRendering() { for (var i = 0, ii = this._thumbnails.length; i < ii; i++) { if (this._thumbnails[i]) { this._thumbnails[i].cancelRendering(); } } } }, { key: 'setPageLabels', value: function setPageLabels(labels) { if (!this.pdfDocument) { return; } if (!labels) { this._pageLabels = null; } else if (!(labels instanceof Array && this.pdfDocument.numPages === labels.length)) { this._pageLabels = null; console.error('PDFThumbnailViewer_setPageLabels: Invalid page labels.'); } else { this._pageLabels = labels; } for (var i = 0, ii = this._thumbnails.length; i < ii; i++) { var label = this._pageLabels && this._pageLabels[i]; this._thumbnails[i].setPageLabel(label); } } }, { key: '_ensurePdfPageLoaded', value: function _ensurePdfPageLoaded(thumbView) { var _this2 = this; if (thumbView.pdfPage) { return Promise.resolve(thumbView.pdfPage); } var pageNumber = thumbView.id; if (this._pagesRequests[pageNumber]) { return this._pagesRequests[pageNumber]; } var promise = this.pdfDocument.getPage(pageNumber).then(function (pdfPage) { thumbView.setPdfPage(pdfPage); _this2._pagesRequests[pageNumber] = null; return pdfPage; }).catch(function (reason) { console.error('Unable to get page for thumb view', reason); _this2._pagesRequests[pageNumber] = null; }); this._pagesRequests[pageNumber] = promise; return promise; } }, { key: 'forceRendering', value: function forceRendering() { var _this3 = this; var visibleThumbs = this._getVisibleThumbs(); var thumbView = this.renderingQueue.getHighestPriority(visibleThumbs, this._thumbnails, this.scroll.down); if (thumbView) { this._ensurePdfPageLoaded(thumbView).then(function () { _this3.renderingQueue.renderView(thumbView); }); return true; } return false; } }, { key: 'pagesRotation', get: function get() { return this._pagesRotation; }, set: function set(rotation) { if (!(0, _ui_utils.isValidRotation)(rotation)) { throw new Error('Invalid thumbnails rotation angle.'); } if (!this.pdfDocument) { return; } if (this._pagesRotation === rotation) { return; } this._pagesRotation = rotation; for (var i = 0, ii = this._thumbnails.length; i < ii; i++) { this._thumbnails[i].update(rotation); } } }]); return PDFThumbnailViewer; }(); exports.PDFThumbnailViewer = PDFThumbnailViewer; |