mirror of
https://github.com/zen-browser/pdf.js.git
synced 2025-07-10 10:15:37 +02:00
Fixed vim indentation rules.
This commit is contained in:
Justin D'Arcangelo
parent
78ce1863bb
commit
fa045139ad
3 changed files with 596 additions and 604 deletions
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@ -1,466 +1,458 @@
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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
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/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
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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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"use strict";
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var PDFViewer = {
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queryParams: {},
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element: null,
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previousPageButton: null,
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nextPageButton: null,
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pageNumberInput: null,
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scaleSelect: null,
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fileInput: null,
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willJumpToPage: false,
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pdf: null,
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url: 'compressed.tracemonkey-pldi-09.pdf',
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pageNumber: 1,
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numberOfPages: 1,
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scale: 1.0,
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pageWidth: function() {
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return 816 * PDFViewer.scale;
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},
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pageHeight: function() {
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return 1056 * PDFViewer.scale;
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},
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lastPagesDrawn: [],
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visiblePages: function() {
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var pageHeight = PDFViewer.pageHeight() + 20; // Add 20 for the margins.
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var windowTop = window.pageYOffset;
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var windowBottom = window.pageYOffset + window.innerHeight;
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var pageStartIndex = Math.floor(windowTop / pageHeight);
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var pageStopIndex = Math.ceil(windowBottom / pageHeight);
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var pages = [];
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for (var i = pageStartIndex; i <= pageStopIndex; i++) {
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pages.push(i + 1);
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}
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return pages;
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},
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queryParams: {},
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createPage: function(num) {
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var anchor = document.createElement('a');
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anchor.name = '' + num;
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var div = document.createElement('div');
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div.id = 'pageContainer' + num;
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div.className = 'page';
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div.style.width = PDFViewer.pageWidth() + 'px';
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div.style.height = PDFViewer.pageHeight() + 'px';
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PDFViewer.element.appendChild(anchor);
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PDFViewer.element.appendChild(div);
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},
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removePage: function(num) {
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var div = document.getElementById('pageContainer' + num);
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if (div) {
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while (div.hasChildNodes()) {
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div.removeChild(div.firstChild);
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}
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}
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},
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drawPage: function(num) {
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if (!PDFViewer.pdf) {
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return;
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}
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var div = document.getElementById('pageContainer' + num);
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var canvas = document.createElement('canvas');
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if (div && !div.hasChildNodes()) {
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div.appendChild(canvas);
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var page = PDFViewer.pdf.getPage(num);
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canvas.id = 'page' + num;
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canvas.mozOpaque = true;
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// Canvas dimensions must be specified in CSS pixels. CSS pixels
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// are always 96 dpi. These dimensions are 8.5in x 11in at 96dpi.
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canvas.width = PDFViewer.pageWidth();
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canvas.height = PDFViewer.pageHeight();
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var ctx = canvas.getContext('2d');
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ctx.save();
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ctx.fillStyle = 'rgb(255, 255, 255)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.restore();
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var gfx = new CanvasGraphics(ctx);
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var fonts = [];
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// page.compile will collect all fonts for us, once we have loaded them
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// we can trigger the actual page rendering with page.display
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page.compile(gfx, fonts);
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var areFontsReady = true;
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// Inspect fonts and translate the missing one
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var fontCount = fonts.length;
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for (var i = 0; i < fontCount; i++) {
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var font = fonts[i];
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if (Fonts[font.name]) {
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areFontsReady = areFontsReady && !Fonts[font.name].loading;
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continue;
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}
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new Font(font.name, font.file, font.properties);
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areFontsReady = false;
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}
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var pageInterval;
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var delayLoadFont = function() {
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for (var i = 0; i < fontCount; i++) {
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if (Fonts[font.name].loading) {
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return;
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}
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}
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clearInterval(pageInterval);
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while (div.hasChildNodes()) {
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div.removeChild(div.firstChild);
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}
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PDFViewer.drawPage(num);
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}
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if (!areFontsReady) {
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pageInterval = setInterval(delayLoadFont, 10);
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return;
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}
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page.display(gfx);
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}
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},
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changeScale: function(num) {
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while (PDFViewer.element.hasChildNodes()) {
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PDFViewer.element.removeChild(PDFViewer.element.firstChild);
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}
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PDFViewer.scale = num / 100;
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var i;
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if (PDFViewer.pdf) {
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for (i = 1; i <= PDFViewer.numberOfPages; i++) {
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PDFViewer.createPage(i);
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}
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if (PDFViewer.numberOfPages > 0) {
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PDFViewer.drawPage(1);
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}
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}
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for (i = 0; i < PDFViewer.scaleSelect.childNodes; i++) {
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var option = PDFViewer.scaleSelect.childNodes[i];
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if (option.value == num) {
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if (!option.selected) {
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option.selected = 'selected';
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}
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} else {
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if (option.selected) {
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option.removeAttribute('selected');
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}
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}
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}
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PDFViewer.scaleSelect.value = Math.floor(PDFViewer.scale * 100) + '%';
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},
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goToPage: function(num) {
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if (1 <= num && num <= PDFViewer.numberOfPages) {
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PDFViewer.pageNumber = num;
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PDFViewer.pageNumberInput.value = PDFViewer.pageNumber;
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PDFViewer.willJumpToPage = true;
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document.location.hash = PDFViewer.pageNumber;
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PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ?
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'disabled' : '';
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PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ?
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'disabled' : '';
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}
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},
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element: null,
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goToPreviousPage: function() {
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if (PDFViewer.pageNumber > 1) {
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PDFViewer.goToPage(--PDFViewer.pageNumber);
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}
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},
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previousPageButton: null,
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nextPageButton: null,
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pageNumberInput: null,
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scaleSelect: null,
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fileInput: null,
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goToNextPage: function() {
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if (PDFViewer.pageNumber < PDFViewer.numberOfPages) {
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PDFViewer.goToPage(++PDFViewer.pageNumber);
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}
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},
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willJumpToPage: false,
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openURL: function(url) {
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PDFViewer.url = url;
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document.title = url;
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var req = new XMLHttpRequest();
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req.open('GET', url);
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req.mozResponseType = req.responseType = 'arraybuffer';
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req.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
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req.onreadystatechange = function() {
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if (req.readyState === 4 && req.status === req.expected) {
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var data = req.mozResponseArrayBuffer ||
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req.mozResponse ||
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req.responseArrayBuffer ||
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req.response;
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PDFViewer.readPDF(data);
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}
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};
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req.send(null);
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},
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readPDF: function(data) {
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while (PDFViewer.element.hasChildNodes()) {
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PDFViewer.element.removeChild(PDFViewer.element.firstChild);
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}
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PDFViewer.pdf = new PDFDoc(new Stream(data));
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PDFViewer.numberOfPages = PDFViewer.pdf.numPages;
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document.getElementById('numPages').innerHTML = PDFViewer.numberOfPages.toString();
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pdf: null,
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for (var i = 1; i <= PDFViewer.numberOfPages; i++) {
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PDFViewer.createPage(i);
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}
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if (PDFViewer.numberOfPages > 0) {
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PDFViewer.drawPage(1);
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document.location.hash = 1;
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}
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PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ?
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'disabled' : '';
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PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ?
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'disabled' : '';
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url: 'compressed.tracemonkey-pldi-09.pdf',
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pageNumber: 1,
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numberOfPages: 1,
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scale: 1.0,
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pageWidth: function() {
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return 816 * PDFViewer.scale;
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},
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pageHeight: function() {
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return 1056 * PDFViewer.scale;
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},
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lastPagesDrawn: [],
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visiblePages: function() {
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var pageHeight = PDFViewer.pageHeight() + 20; // Add 20 for the margins.
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var windowTop = window.pageYOffset;
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var windowBottom = window.pageYOffset + window.innerHeight;
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var pageStartIndex = Math.floor(windowTop / pageHeight);
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var pageStopIndex = Math.ceil(windowBottom / pageHeight);
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var pages = [];
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for (var i = pageStartIndex; i <= pageStopIndex; i++) {
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pages.push(i + 1);
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}
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return pages;
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},
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createPage: function(num) {
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var anchor = document.createElement('a');
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anchor.name = '' + num;
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var div = document.createElement('div');
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div.id = 'pageContainer' + num;
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div.className = 'page';
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div.style.width = PDFViewer.pageWidth() + 'px';
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div.style.height = PDFViewer.pageHeight() + 'px';
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PDFViewer.element.appendChild(anchor);
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PDFViewer.element.appendChild(div);
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},
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removePage: function(num) {
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var div = document.getElementById('pageContainer' + num);
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if (div) {
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while (div.hasChildNodes()) {
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div.removeChild(div.firstChild);
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}
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}
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},
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drawPage: function(num) {
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if (!PDFViewer.pdf) {
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return;
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}
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var div = document.getElementById('pageContainer' + num);
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var canvas = document.createElement('canvas');
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if (div && !div.hasChildNodes()) {
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div.appendChild(canvas);
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var page = PDFViewer.pdf.getPage(num);
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canvas.id = 'page' + num;
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canvas.mozOpaque = true;
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// Canvas dimensions must be specified in CSS pixels. CSS pixels
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// are always 96 dpi. These dimensions are 8.5in x 11in at 96dpi.
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canvas.width = PDFViewer.pageWidth();
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canvas.height = PDFViewer.pageHeight();
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var ctx = canvas.getContext('2d');
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ctx.save();
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ctx.fillStyle = 'rgb(255, 255, 255)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.restore();
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var gfx = new CanvasGraphics(ctx);
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var fonts = [];
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// page.compile will collect all fonts for us, once we have loaded them
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// we can trigger the actual page rendering with page.display
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page.compile(gfx, fonts);
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var areFontsReady = true;
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// Inspect fonts and translate the missing one
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var fontCount = fonts.length;
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for (var i = 0; i < fontCount; i++) {
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var font = fonts[i];
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if (Fonts[font.name]) {
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areFontsReady = areFontsReady && !Fonts[font.name].loading;
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continue;
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}
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new Font(font.name, font.file, font.properties);
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areFontsReady = false;
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}
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var pageInterval;
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var delayLoadFont = function() {
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for (var i = 0; i < fontCount; i++) {
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if (Fonts[font.name].loading) {
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return;
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}
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}
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clearInterval(pageInterval);
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while (div.hasChildNodes()) {
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div.removeChild(div.firstChild);
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}
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PDFViewer.drawPage(num);
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}
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if (!areFontsReady) {
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pageInterval = setInterval(delayLoadFont, 10);
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return;
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}
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page.display(gfx);
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}
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},
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changeScale: function(num) {
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while (PDFViewer.element.hasChildNodes()) {
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PDFViewer.element.removeChild(PDFViewer.element.firstChild);
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}
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PDFViewer.scale = num / 100;
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var i;
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if (PDFViewer.pdf) {
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for (i = 1; i <= PDFViewer.numberOfPages; i++) {
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PDFViewer.createPage(i);
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}
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if (PDFViewer.numberOfPages > 0) {
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PDFViewer.drawPage(1);
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}
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}
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for (i = 0; i < PDFViewer.scaleSelect.childNodes; i++) {
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var option = PDFViewer.scaleSelect.childNodes[i];
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if (option.value == num) {
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if (!option.selected) {
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option.selected = 'selected';
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}
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} else {
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if (option.selected) {
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option.removeAttribute('selected');
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}
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}
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}
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PDFViewer.scaleSelect.value = Math.floor(PDFViewer.scale * 100) + '%';
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},
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goToPage: function(num) {
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if (1 <= num && num <= PDFViewer.numberOfPages) {
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PDFViewer.pageNumber = num;
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PDFViewer.pageNumberInput.value = PDFViewer.pageNumber;
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PDFViewer.willJumpToPage = true;
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document.location.hash = PDFViewer.pageNumber;
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PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ? 'disabled' : '';
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PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ? 'disabled' : '';
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}
|
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},
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goToPreviousPage: function() {
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if (PDFViewer.pageNumber > 1) {
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PDFViewer.goToPage(--PDFViewer.pageNumber);
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}
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},
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goToNextPage: function() {
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if (PDFViewer.pageNumber < PDFViewer.numberOfPages) {
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PDFViewer.goToPage(++PDFViewer.pageNumber);
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}
|
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},
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openURL: function(url) {
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PDFViewer.url = url;
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document.title = url;
|
||||
|
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var req = new XMLHttpRequest();
|
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req.open('GET', url);
|
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req.mozResponseType = req.responseType = 'arraybuffer';
|
||||
req.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
|
||||
|
||||
req.onreadystatechange = function() {
|
||||
if (req.readyState === 4 && req.status === req.expected) {
|
||||
var data = req.mozResponseArrayBuffer || req.mozResponse || req.responseArrayBuffer || req.response;
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||||
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PDFViewer.readPDF(data);
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}
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};
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||||
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req.send(null);
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},
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readPDF: function(data) {
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while (PDFViewer.element.hasChildNodes()) {
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PDFViewer.element.removeChild(PDFViewer.element.firstChild);
|
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}
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PDFViewer.pdf = new PDFDoc(new Stream(data));
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PDFViewer.numberOfPages = PDFViewer.pdf.numPages;
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document.getElementById('numPages').innerHTML = PDFViewer.numberOfPages.toString();
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for (var i = 1; i <= PDFViewer.numberOfPages; i++) {
|
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PDFViewer.createPage(i);
|
||||
}
|
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|
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if (PDFViewer.numberOfPages > 0) {
|
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PDFViewer.drawPage(1);
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document.location.hash = 1;
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}
|
||||
|
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PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ? 'disabled' : '';
|
||||
PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ? 'disabled' : '';
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||||
}
|
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};
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window.onload = function() {
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// Parse the URL query parameters into a cached object.
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PDFViewer.queryParams = function() {
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var qs = window.location.search.substring(1);
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||||
var kvs = qs.split('&');
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||||
var params = {};
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||||
for (var i = 0; i < kvs.length; ++i) {
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||||
var kv = kvs[i].split('=');
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||||
params[unescape(kv[0])] = unescape(kv[1]);
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||||
}
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||||
return params;
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||||
}();
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PDFViewer.element = document.getElementById('viewer');
|
||||
|
||||
PDFViewer.pageNumberInput = document.getElementById('pageNumber');
|
||||
PDFViewer.pageNumberInput.onkeydown = function(evt) {
|
||||
var charCode = evt.charCode || evt.keyCode;
|
||||
|
||||
// Up arrow key.
|
||||
if (charCode === 38) {
|
||||
PDFViewer.goToNextPage();
|
||||
this.select();
|
||||
}
|
||||
|
||||
// Down arrow key.
|
||||
else if (charCode === 40) {
|
||||
PDFViewer.goToPreviousPage();
|
||||
this.select();
|
||||
}
|
||||
|
||||
// All other non-numeric keys (excluding Left arrow, Right arrow,
|
||||
// Backspace, and Delete keys).
|
||||
else if ((charCode < 48 || charCode > 57) &&
|
||||
charCode !== 8 && // Backspace
|
||||
charCode !== 46 && // Delete
|
||||
charCode !== 37 && // Left arrow
|
||||
charCode !== 39 // Right arrow
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
};
|
||||
PDFViewer.pageNumberInput.onkeyup = function(evt) {
|
||||
var charCode = evt.charCode || evt.keyCode;
|
||||
|
||||
// All numeric keys, Backspace, and Delete.
|
||||
if ((charCode >= 48 && charCode <= 57) ||
|
||||
charCode === 8 || // Backspace
|
||||
charCode === 46 // Delete
|
||||
) {
|
||||
PDFViewer.goToPage(this.value);
|
||||
}
|
||||
|
||||
this.focus();
|
||||
};
|
||||
|
||||
PDFViewer.previousPageButton = document.getElementById('previousPageButton');
|
||||
PDFViewer.previousPageButton.onclick = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
PDFViewer.goToPreviousPage();
|
||||
}
|
||||
};
|
||||
PDFViewer.previousPageButton.onmousedown = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
this.className = 'down';
|
||||
}
|
||||
};
|
||||
PDFViewer.previousPageButton.onmouseup = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
PDFViewer.previousPageButton.onmouseout = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
|
||||
// Parse the URL query parameters into a cached object.
|
||||
PDFViewer.queryParams = function() {
|
||||
var qs = window.location.search.substring(1);
|
||||
var kvs = qs.split('&');
|
||||
var params = {};
|
||||
|
||||
PDFViewer.nextPageButton = document.getElementById('nextPageButton');
|
||||
PDFViewer.nextPageButton.onclick = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
PDFViewer.goToNextPage();
|
||||
}
|
||||
};
|
||||
PDFViewer.nextPageButton.onmousedown = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
this.className = 'down';
|
||||
}
|
||||
};
|
||||
PDFViewer.nextPageButton.onmouseup = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
PDFViewer.nextPageButton.onmouseout = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
|
||||
PDFViewer.scaleSelect = document.getElementById('scaleSelect');
|
||||
PDFViewer.scaleSelect.onchange = function(evt) {
|
||||
PDFViewer.changeScale(parseInt(this.value));
|
||||
};
|
||||
|
||||
if (window.File && window.FileReader && window.FileList && window.Blob) {
|
||||
var openFileButton = document.getElementById('openFileButton');
|
||||
openFileButton.onclick = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
PDFViewer.fileInput.click();
|
||||
}
|
||||
};
|
||||
openFileButton.onmousedown = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
this.className = 'down';
|
||||
}
|
||||
};
|
||||
openFileButton.onmouseup = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
openFileButton.onmouseout = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
|
||||
PDFViewer.fileInput = document.getElementById('fileInput');
|
||||
PDFViewer.fileInput.onchange = function(evt) {
|
||||
var files = evt.target.files;
|
||||
|
||||
if (files.length > 0) {
|
||||
var file = files[0];
|
||||
var fileReader = new FileReader();
|
||||
|
||||
document.title = file.name;
|
||||
|
||||
// Read the local file into a Uint8Array.
|
||||
fileReader.onload = function(evt) {
|
||||
var data = evt.target.result;
|
||||
var buffer = new ArrayBuffer(data.length);
|
||||
var uint8Array = new Uint8Array(buffer);
|
||||
|
||||
for (var i = 0; i < data.length; i++) {
|
||||
uint8Array[i] = data.charCodeAt(i);
|
||||
}
|
||||
|
||||
PDFViewer.readPDF(uint8Array);
|
||||
};
|
||||
|
||||
// Read as a binary string since "readAsArrayBuffer" is not yet
|
||||
// implemented in Firefox.
|
||||
fileReader.readAsBinaryString(file);
|
||||
}
|
||||
};
|
||||
PDFViewer.fileInput.value = null;
|
||||
} else {
|
||||
document.getElementById('fileWrapper').style.display = 'none';
|
||||
for (var i = 0; i < kvs.length; ++i) {
|
||||
var kv = kvs[i].split('=');
|
||||
params[unescape(kv[0])] = unescape(kv[1]);
|
||||
}
|
||||
|
||||
PDFViewer.pageNumber = parseInt(PDFViewer.queryParams.page) || PDFViewer.pageNumber;
|
||||
PDFViewer.scale = parseInt(PDFViewer.scaleSelect.value) / 100 || 1.0;
|
||||
|
||||
PDFViewer.openURL(PDFViewer.queryParams.file || PDFViewer.url);
|
||||
return params;
|
||||
}();
|
||||
|
||||
window.onscroll = function(evt) {
|
||||
var lastPagesDrawn = PDFViewer.lastPagesDrawn;
|
||||
var visiblePages = PDFViewer.visiblePages();
|
||||
|
||||
var pagesToDraw = [];
|
||||
var pagesToKeep = [];
|
||||
var pagesToRemove = [];
|
||||
|
||||
var i;
|
||||
|
||||
// Determine which visible pages were not previously drawn.
|
||||
for (i = 0; i < visiblePages.length; i++) {
|
||||
if (lastPagesDrawn.indexOf(visiblePages[i]) === -1) {
|
||||
pagesToDraw.push(visiblePages[i]);
|
||||
PDFViewer.drawPage(visiblePages[i]);
|
||||
} else {
|
||||
pagesToKeep.push(visiblePages[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// Determine which previously drawn pages are no longer visible.
|
||||
for (i = 0; i < lastPagesDrawn.length; i++) {
|
||||
if (visiblePages.indexOf(lastPagesDrawn[i]) === -1) {
|
||||
pagesToRemove.push(lastPagesDrawn[i]);
|
||||
PDFViewer.removePage(lastPagesDrawn[i]);
|
||||
}
|
||||
}
|
||||
|
||||
PDFViewer.lastPagesDrawn = pagesToDraw.concat(pagesToKeep);
|
||||
|
||||
// Update the page number input with the current page number.
|
||||
if (!PDFViewer.willJumpToPage && visiblePages.length > 0) {
|
||||
PDFViewer.pageNumber = PDFViewer.pageNumberInput.value = visiblePages[0];
|
||||
PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ?
|
||||
'disabled' : '';
|
||||
PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ?
|
||||
'disabled' : '';
|
||||
} else {
|
||||
PDFViewer.willJumpToPage = false;
|
||||
}
|
||||
PDFViewer.element = document.getElementById('viewer');
|
||||
|
||||
PDFViewer.pageNumberInput = document.getElementById('pageNumber');
|
||||
PDFViewer.pageNumberInput.onkeydown = function(evt) {
|
||||
var charCode = evt.charCode || evt.keyCode;
|
||||
|
||||
// Up arrow key.
|
||||
if (charCode === 38) {
|
||||
PDFViewer.goToNextPage();
|
||||
this.select();
|
||||
}
|
||||
|
||||
// Down arrow key.
|
||||
else if (charCode === 40) {
|
||||
PDFViewer.goToPreviousPage();
|
||||
this.select();
|
||||
}
|
||||
|
||||
// All other non-numeric keys (excluding Left arrow, Right arrow,
|
||||
// Backspace, and Delete keys).
|
||||
else if ((charCode < 48 || charCode > 57) &&
|
||||
charCode !== 8 && // Backspace
|
||||
charCode !== 46 && // Delete
|
||||
charCode !== 37 && // Left arrow
|
||||
charCode !== 39 // Right arrow
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
};
|
||||
PDFViewer.pageNumberInput.onkeyup = function(evt) {
|
||||
var charCode = evt.charCode || evt.keyCode;
|
||||
|
||||
// All numeric keys, Backspace, and Delete.
|
||||
if ((charCode >= 48 && charCode <= 57) ||
|
||||
charCode === 8 || // Backspace
|
||||
charCode === 46 // Delete
|
||||
) {
|
||||
PDFViewer.goToPage(this.value);
|
||||
}
|
||||
|
||||
this.focus();
|
||||
};
|
||||
|
||||
PDFViewer.previousPageButton = document.getElementById('previousPageButton');
|
||||
PDFViewer.previousPageButton.onclick = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
PDFViewer.goToPreviousPage();
|
||||
}
|
||||
};
|
||||
PDFViewer.previousPageButton.onmousedown = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
this.className = 'down';
|
||||
}
|
||||
};
|
||||
PDFViewer.previousPageButton.onmouseup = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
PDFViewer.previousPageButton.onmouseout = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
|
||||
PDFViewer.nextPageButton = document.getElementById('nextPageButton');
|
||||
PDFViewer.nextPageButton.onclick = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
PDFViewer.goToNextPage();
|
||||
}
|
||||
};
|
||||
PDFViewer.nextPageButton.onmousedown = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
this.className = 'down';
|
||||
}
|
||||
};
|
||||
PDFViewer.nextPageButton.onmouseup = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
PDFViewer.nextPageButton.onmouseout = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
|
||||
PDFViewer.scaleSelect = document.getElementById('scaleSelect');
|
||||
PDFViewer.scaleSelect.onchange = function(evt) {
|
||||
PDFViewer.changeScale(parseInt(this.value));
|
||||
};
|
||||
|
||||
if (window.File && window.FileReader && window.FileList && window.Blob) {
|
||||
var openFileButton = document.getElementById('openFileButton');
|
||||
openFileButton.onclick = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
PDFViewer.fileInput.click();
|
||||
}
|
||||
};
|
||||
openFileButton.onmousedown = function(evt) {
|
||||
if (this.className.indexOf('disabled') === -1) {
|
||||
this.className = 'down';
|
||||
}
|
||||
};
|
||||
openFileButton.onmouseup = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
openFileButton.onmouseout = function(evt) {
|
||||
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
|
||||
};
|
||||
|
||||
PDFViewer.fileInput = document.getElementById('fileInput');
|
||||
PDFViewer.fileInput.onchange = function(evt) {
|
||||
var files = evt.target.files;
|
||||
|
||||
if (files.length > 0) {
|
||||
var file = files[0];
|
||||
var fileReader = new FileReader();
|
||||
|
||||
document.title = file.name;
|
||||
|
||||
// Read the local file into a Uint8Array.
|
||||
fileReader.onload = function(evt) {
|
||||
var data = evt.target.result;
|
||||
var buffer = new ArrayBuffer(data.length);
|
||||
var uint8Array = new Uint8Array(buffer);
|
||||
|
||||
for (var i = 0; i < data.length; i++) {
|
||||
uint8Array[i] = data.charCodeAt(i);
|
||||
}
|
||||
|
||||
PDFViewer.readPDF(uint8Array);
|
||||
};
|
||||
|
||||
// Read as a binary string since "readAsArrayBuffer" is not yet
|
||||
// implemented in Firefox.
|
||||
fileReader.readAsBinaryString(file);
|
||||
}
|
||||
};
|
||||
PDFViewer.fileInput.value = null;
|
||||
} else {
|
||||
document.getElementById('fileWrapper').style.display = 'none';
|
||||
}
|
||||
|
||||
PDFViewer.pageNumber = parseInt(PDFViewer.queryParams.page) || PDFViewer.pageNumber;
|
||||
PDFViewer.scale = parseInt(PDFViewer.scaleSelect.value) / 100 || 1.0;
|
||||
|
||||
PDFViewer.openURL(PDFViewer.queryParams.file || PDFViewer.url);
|
||||
|
||||
window.onscroll = function(evt) {
|
||||
var lastPagesDrawn = PDFViewer.lastPagesDrawn;
|
||||
var visiblePages = PDFViewer.visiblePages();
|
||||
|
||||
var pagesToDraw = [];
|
||||
var pagesToKeep = [];
|
||||
var pagesToRemove = [];
|
||||
|
||||
var i;
|
||||
|
||||
// Determine which visible pages were not previously drawn.
|
||||
for (i = 0; i < visiblePages.length; i++) {
|
||||
if (lastPagesDrawn.indexOf(visiblePages[i]) === -1) {
|
||||
pagesToDraw.push(visiblePages[i]);
|
||||
PDFViewer.drawPage(visiblePages[i]);
|
||||
} else {
|
||||
pagesToKeep.push(visiblePages[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// Determine which previously drawn pages are no longer visible.
|
||||
for (i = 0; i < lastPagesDrawn.length; i++) {
|
||||
if (visiblePages.indexOf(lastPagesDrawn[i]) === -1) {
|
||||
pagesToRemove.push(lastPagesDrawn[i]);
|
||||
PDFViewer.removePage(lastPagesDrawn[i]);
|
||||
}
|
||||
}
|
||||
|
||||
PDFViewer.lastPagesDrawn = pagesToDraw.concat(pagesToKeep);
|
||||
|
||||
// Update the page number input with the current page number.
|
||||
if (!PDFViewer.willJumpToPage && visiblePages.length > 0) {
|
||||
PDFViewer.pageNumber = PDFViewer.pageNumberInput.value = visiblePages[0];
|
||||
PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ? 'disabled' : '';
|
||||
PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ? 'disabled' : '';
|
||||
} else {
|
||||
PDFViewer.willJumpToPage = false;
|
||||
}
|
||||
};
|
||||
};
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue