mirror of
https://github.com/janeczku/calibre-web
synced 2024-12-27 18:40:31 +00:00
617 lines
19 KiB
JavaScript
617 lines
19 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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'use strict';
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var FontInspector = (function FontInspectorClosure() {
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var fonts;
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var active = false;
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var fontAttribute = 'data-font-name';
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function removeSelection() {
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var divs = document.querySelectorAll('div[' + fontAttribute + ']');
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for (var i = 0, ii = divs.length; i < ii; ++i) {
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var div = divs[i];
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div.className = '';
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}
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}
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function resetSelection() {
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var divs = document.querySelectorAll('div[' + fontAttribute + ']');
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for (var i = 0, ii = divs.length; i < ii; ++i) {
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var div = divs[i];
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div.className = 'debuggerHideText';
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}
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}
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function selectFont(fontName, show) {
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var divs = document.querySelectorAll('div[' + fontAttribute + '=' +
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fontName + ']');
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for (var i = 0, ii = divs.length; i < ii; ++i) {
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var div = divs[i];
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div.className = show ? 'debuggerShowText' : 'debuggerHideText';
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}
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}
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function textLayerClick(e) {
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if (!e.target.dataset.fontName ||
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e.target.tagName.toUpperCase() !== 'DIV') {
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return;
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}
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var fontName = e.target.dataset.fontName;
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var selects = document.getElementsByTagName('input');
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for (var i = 0; i < selects.length; ++i) {
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var select = selects[i];
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if (select.dataset.fontName !== fontName) {
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continue;
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}
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select.checked = !select.checked;
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selectFont(fontName, select.checked);
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select.scrollIntoView();
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}
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}
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return {
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// Properties/functions needed by PDFBug.
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id: 'FontInspector',
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name: 'Font Inspector',
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panel: null,
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manager: null,
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init: function init(pdfjsLib) {
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var panel = this.panel;
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panel.setAttribute('style', 'padding: 5px;');
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var tmp = document.createElement('button');
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tmp.addEventListener('click', resetSelection);
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tmp.textContent = 'Refresh';
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panel.appendChild(tmp);
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fonts = document.createElement('div');
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panel.appendChild(fonts);
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},
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cleanup: function cleanup() {
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fonts.textContent = '';
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},
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enabled: false,
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get active() {
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return active;
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},
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set active(value) {
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active = value;
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if (active) {
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document.body.addEventListener('click', textLayerClick, true);
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resetSelection();
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} else {
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document.body.removeEventListener('click', textLayerClick, true);
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removeSelection();
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}
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},
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// FontInspector specific functions.
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fontAdded: function fontAdded(fontObj, url) {
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function properties(obj, list) {
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var moreInfo = document.createElement('table');
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for (var i = 0; i < list.length; i++) {
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var tr = document.createElement('tr');
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var td1 = document.createElement('td');
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td1.textContent = list[i];
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tr.appendChild(td1);
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var td2 = document.createElement('td');
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td2.textContent = obj[list[i]].toString();
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tr.appendChild(td2);
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moreInfo.appendChild(tr);
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}
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return moreInfo;
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}
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var moreInfo = properties(fontObj, ['name', 'type']);
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var fontName = fontObj.loadedName;
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var font = document.createElement('div');
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var name = document.createElement('span');
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name.textContent = fontName;
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var download = document.createElement('a');
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if (url) {
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url = /url\(['"]?([^\)"']+)/.exec(url);
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download.href = url[1];
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} else if (fontObj.data) {
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url = URL.createObjectURL(new Blob([fontObj.data], {
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type: fontObj.mimeType
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}));
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download.href = url;
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}
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download.textContent = 'Download';
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var logIt = document.createElement('a');
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logIt.href = '';
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logIt.textContent = 'Log';
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logIt.addEventListener('click', function(event) {
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event.preventDefault();
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console.log(fontObj);
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});
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var select = document.createElement('input');
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select.setAttribute('type', 'checkbox');
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select.dataset.fontName = fontName;
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select.addEventListener('click', (function(select, fontName) {
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return (function() {
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selectFont(fontName, select.checked);
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});
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})(select, fontName));
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font.appendChild(select);
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font.appendChild(name);
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font.appendChild(document.createTextNode(' '));
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font.appendChild(download);
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font.appendChild(document.createTextNode(' '));
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font.appendChild(logIt);
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font.appendChild(moreInfo);
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fonts.appendChild(font);
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// Somewhat of a hack, should probably add a hook for when the text layer
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// is done rendering.
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setTimeout(function() {
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if (this.active) {
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resetSelection();
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}
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}.bind(this), 2000);
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}
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};
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})();
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// Manages all the page steppers.
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var StepperManager = (function StepperManagerClosure() {
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var steppers = [];
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var stepperDiv = null;
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var stepperControls = null;
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var stepperChooser = null;
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var breakPoints = Object.create(null);
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return {
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// Properties/functions needed by PDFBug.
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id: 'Stepper',
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name: 'Stepper',
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panel: null,
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manager: null,
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init: function init() {
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var self = this;
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this.panel.setAttribute('style', 'padding: 5px;');
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stepperControls = document.createElement('div');
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stepperChooser = document.createElement('select');
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stepperChooser.addEventListener('change', function(event) {
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self.selectStepper(this.value);
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});
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stepperControls.appendChild(stepperChooser);
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stepperDiv = document.createElement('div');
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this.panel.appendChild(stepperControls);
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this.panel.appendChild(stepperDiv);
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if (sessionStorage.getItem('pdfjsBreakPoints')) {
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breakPoints = JSON.parse(sessionStorage.getItem('pdfjsBreakPoints'));
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}
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},
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cleanup: function cleanup() {
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stepperChooser.textContent = '';
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stepperDiv.textContent = '';
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steppers = [];
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},
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enabled: false,
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active: false,
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// Stepper specific functions.
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create: function create(pageIndex) {
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var debug = document.createElement('div');
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debug.id = 'stepper' + pageIndex;
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debug.setAttribute('hidden', true);
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debug.className = 'stepper';
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stepperDiv.appendChild(debug);
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var b = document.createElement('option');
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b.textContent = 'Page ' + (pageIndex + 1);
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b.value = pageIndex;
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stepperChooser.appendChild(b);
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var initBreakPoints = breakPoints[pageIndex] || [];
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var stepper = new Stepper(debug, pageIndex, initBreakPoints);
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steppers.push(stepper);
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if (steppers.length === 1) {
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this.selectStepper(pageIndex, false);
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}
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return stepper;
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},
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selectStepper: function selectStepper(pageIndex, selectPanel) {
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var i;
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pageIndex = pageIndex | 0;
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if (selectPanel) {
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this.manager.selectPanel(this);
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}
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for (i = 0; i < steppers.length; ++i) {
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var stepper = steppers[i];
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if (stepper.pageIndex === pageIndex) {
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stepper.panel.removeAttribute('hidden');
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} else {
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stepper.panel.setAttribute('hidden', true);
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}
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}
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var options = stepperChooser.options;
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for (i = 0; i < options.length; ++i) {
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var option = options[i];
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option.selected = (option.value | 0) === pageIndex;
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}
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},
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saveBreakPoints: function saveBreakPoints(pageIndex, bps) {
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breakPoints[pageIndex] = bps;
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sessionStorage.setItem('pdfjsBreakPoints', JSON.stringify(breakPoints));
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}
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};
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})();
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// The stepper for each page's IRQueue.
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var Stepper = (function StepperClosure() {
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// Shorter way to create element and optionally set textContent.
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function c(tag, textContent) {
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var d = document.createElement(tag);
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if (textContent) {
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d.textContent = textContent;
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}
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return d;
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}
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var opMap = null;
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function simplifyArgs(args) {
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if (typeof args === 'string') {
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var MAX_STRING_LENGTH = 75;
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return args.length <= MAX_STRING_LENGTH ? args :
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args.substr(0, MAX_STRING_LENGTH) + '...';
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}
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if (typeof args !== 'object' || args === null) {
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return args;
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}
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if ('length' in args) { // array
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var simpleArgs = [], i, ii;
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var MAX_ITEMS = 10;
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for (i = 0, ii = Math.min(MAX_ITEMS, args.length); i < ii; i++) {
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simpleArgs.push(simplifyArgs(args[i]));
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}
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if (i < args.length) {
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simpleArgs.push('...');
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}
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return simpleArgs;
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}
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var simpleObj = {};
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for (var key in args) {
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simpleObj[key] = simplifyArgs(args[key]);
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}
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return simpleObj;
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}
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function Stepper(panel, pageIndex, initialBreakPoints) {
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this.panel = panel;
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this.breakPoint = 0;
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this.nextBreakPoint = null;
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this.pageIndex = pageIndex;
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this.breakPoints = initialBreakPoints;
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this.currentIdx = -1;
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this.operatorListIdx = 0;
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}
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Stepper.prototype = {
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init: function init(pdfjsLib) {
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var panel = this.panel;
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var content = c('div', 'c=continue, s=step');
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var table = c('table');
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content.appendChild(table);
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table.cellSpacing = 0;
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var headerRow = c('tr');
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table.appendChild(headerRow);
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headerRow.appendChild(c('th', 'Break'));
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headerRow.appendChild(c('th', 'Idx'));
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headerRow.appendChild(c('th', 'fn'));
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headerRow.appendChild(c('th', 'args'));
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panel.appendChild(content);
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this.table = table;
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if (!opMap) {
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opMap = Object.create(null);
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for (var key in pdfjsLib.OPS) {
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opMap[pdfjsLib.OPS[key]] = key;
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}
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}
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},
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updateOperatorList: function updateOperatorList(operatorList) {
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var self = this;
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function cboxOnClick() {
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var x = +this.dataset.idx;
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if (this.checked) {
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self.breakPoints.push(x);
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} else {
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self.breakPoints.splice(self.breakPoints.indexOf(x), 1);
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}
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StepperManager.saveBreakPoints(self.pageIndex, self.breakPoints);
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}
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var MAX_OPERATORS_COUNT = 15000;
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if (this.operatorListIdx > MAX_OPERATORS_COUNT) {
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return;
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}
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var chunk = document.createDocumentFragment();
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var operatorsToDisplay = Math.min(MAX_OPERATORS_COUNT,
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operatorList.fnArray.length);
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for (var i = this.operatorListIdx; i < operatorsToDisplay; i++) {
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var line = c('tr');
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line.className = 'line';
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line.dataset.idx = i;
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chunk.appendChild(line);
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var checked = this.breakPoints.indexOf(i) !== -1;
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var args = operatorList.argsArray[i] || [];
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var breakCell = c('td');
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var cbox = c('input');
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cbox.type = 'checkbox';
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cbox.className = 'points';
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cbox.checked = checked;
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cbox.dataset.idx = i;
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cbox.onclick = cboxOnClick;
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breakCell.appendChild(cbox);
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line.appendChild(breakCell);
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line.appendChild(c('td', i.toString()));
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var fn = opMap[operatorList.fnArray[i]];
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var decArgs = args;
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if (fn === 'showText') {
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var glyphs = args[0];
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var newArgs = [];
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var str = [];
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for (var j = 0; j < glyphs.length; j++) {
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var glyph = glyphs[j];
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if (typeof glyph === 'object' && glyph !== null) {
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str.push(glyph.fontChar);
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} else {
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if (str.length > 0) {
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newArgs.push(str.join(''));
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str = [];
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}
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newArgs.push(glyph); // null or number
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}
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}
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if (str.length > 0) {
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newArgs.push(str.join(''));
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}
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decArgs = [newArgs];
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}
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line.appendChild(c('td', fn));
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line.appendChild(c('td', JSON.stringify(simplifyArgs(decArgs))));
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}
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if (operatorsToDisplay < operatorList.fnArray.length) {
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line = c('tr');
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var lastCell = c('td', '...');
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lastCell.colspan = 4;
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chunk.appendChild(lastCell);
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}
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this.operatorListIdx = operatorList.fnArray.length;
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this.table.appendChild(chunk);
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},
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getNextBreakPoint: function getNextBreakPoint() {
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this.breakPoints.sort(function(a, b) { return a - b; });
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for (var i = 0; i < this.breakPoints.length; i++) {
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if (this.breakPoints[i] > this.currentIdx) {
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return this.breakPoints[i];
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}
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}
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return null;
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},
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breakIt: function breakIt(idx, callback) {
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StepperManager.selectStepper(this.pageIndex, true);
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var self = this;
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var dom = document;
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self.currentIdx = idx;
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var listener = function(e) {
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switch (e.keyCode) {
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case 83: // step
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dom.removeEventListener('keydown', listener, false);
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self.nextBreakPoint = self.currentIdx + 1;
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self.goTo(-1);
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callback();
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break;
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case 67: // continue
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dom.removeEventListener('keydown', listener, false);
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var breakPoint = self.getNextBreakPoint();
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self.nextBreakPoint = breakPoint;
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self.goTo(-1);
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callback();
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break;
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}
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};
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dom.addEventListener('keydown', listener, false);
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self.goTo(idx);
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},
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goTo: function goTo(idx) {
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var allRows = this.panel.getElementsByClassName('line');
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for (var x = 0, xx = allRows.length; x < xx; ++x) {
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var row = allRows[x];
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if ((row.dataset.idx | 0) === idx) {
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row.style.backgroundColor = 'rgb(251,250,207)';
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row.scrollIntoView();
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} else {
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row.style.backgroundColor = null;
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}
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}
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}
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};
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return Stepper;
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})();
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var Stats = (function Stats() {
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var stats = [];
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function clear(node) {
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while (node.hasChildNodes()) {
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node.removeChild(node.lastChild);
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}
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}
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function getStatIndex(pageNumber) {
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for (var i = 0, ii = stats.length; i < ii; ++i) {
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if (stats[i].pageNumber === pageNumber) {
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return i;
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}
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}
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return false;
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}
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return {
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// Properties/functions needed by PDFBug.
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id: 'Stats',
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name: 'Stats',
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panel: null,
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manager: null,
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init: function init(pdfjsLib) {
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this.panel.setAttribute('style', 'padding: 5px;');
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pdfjsLib.PDFJS.enableStats = true;
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},
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enabled: false,
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active: false,
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// Stats specific functions.
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add: function(pageNumber, stat) {
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if (!stat) {
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return;
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}
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var statsIndex = getStatIndex(pageNumber);
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if (statsIndex !== false) {
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var b = stats[statsIndex];
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this.panel.removeChild(b.div);
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stats.splice(statsIndex, 1);
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}
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var wrapper = document.createElement('div');
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wrapper.className = 'stats';
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var title = document.createElement('div');
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title.className = 'title';
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title.textContent = 'Page: ' + pageNumber;
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var statsDiv = document.createElement('div');
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statsDiv.textContent = stat.toString();
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wrapper.appendChild(title);
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wrapper.appendChild(statsDiv);
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stats.push({ pageNumber: pageNumber, div: wrapper });
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stats.sort(function(a, b) { return a.pageNumber - b.pageNumber; });
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clear(this.panel);
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for (var i = 0, ii = stats.length; i < ii; ++i) {
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this.panel.appendChild(stats[i].div);
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}
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},
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cleanup: function () {
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stats = [];
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clear(this.panel);
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}
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};
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})();
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// Manages all the debugging tools.
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var PDFBug = (function PDFBugClosure() {
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var panelWidth = 300;
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var buttons = [];
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var activePanel = null;
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return {
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tools: [
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FontInspector,
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StepperManager,
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Stats
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],
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enable: function(ids) {
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var all = false, tools = this.tools;
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if (ids.length === 1 && ids[0] === 'all') {
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all = true;
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}
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for (var i = 0; i < tools.length; ++i) {
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var tool = tools[i];
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if (all || ids.indexOf(tool.id) !== -1) {
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tool.enabled = true;
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}
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}
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if (!all) {
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// Sort the tools by the order they are enabled.
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tools.sort(function(a, b) {
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var indexA = ids.indexOf(a.id);
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indexA = indexA < 0 ? tools.length : indexA;
|
|
var indexB = ids.indexOf(b.id);
|
|
indexB = indexB < 0 ? tools.length : indexB;
|
|
return indexA - indexB;
|
|
});
|
|
}
|
|
},
|
|
init: function init(pdfjsLib, container) {
|
|
/*
|
|
* Basic Layout:
|
|
* PDFBug
|
|
* Controls
|
|
* Panels
|
|
* Panel
|
|
* Panel
|
|
* ...
|
|
*/
|
|
var ui = document.createElement('div');
|
|
ui.id = 'PDFBug';
|
|
|
|
var controls = document.createElement('div');
|
|
controls.setAttribute('class', 'controls');
|
|
ui.appendChild(controls);
|
|
|
|
var panels = document.createElement('div');
|
|
panels.setAttribute('class', 'panels');
|
|
ui.appendChild(panels);
|
|
|
|
container.appendChild(ui);
|
|
container.style.right = panelWidth + 'px';
|
|
|
|
// Initialize all the debugging tools.
|
|
var tools = this.tools;
|
|
var self = this;
|
|
for (var i = 0; i < tools.length; ++i) {
|
|
var tool = tools[i];
|
|
var panel = document.createElement('div');
|
|
var panelButton = document.createElement('button');
|
|
panelButton.textContent = tool.name;
|
|
panelButton.addEventListener('click', (function(selected) {
|
|
return function(event) {
|
|
event.preventDefault();
|
|
self.selectPanel(selected);
|
|
};
|
|
})(i));
|
|
controls.appendChild(panelButton);
|
|
panels.appendChild(panel);
|
|
tool.panel = panel;
|
|
tool.manager = this;
|
|
if (tool.enabled) {
|
|
tool.init(pdfjsLib);
|
|
} else {
|
|
panel.textContent = tool.name + ' is disabled. To enable add ' +
|
|
' "' + tool.id + '" to the pdfBug parameter ' +
|
|
'and refresh (seperate multiple by commas).';
|
|
}
|
|
buttons.push(panelButton);
|
|
}
|
|
this.selectPanel(0);
|
|
},
|
|
cleanup: function cleanup() {
|
|
for (var i = 0, ii = this.tools.length; i < ii; i++) {
|
|
if (this.tools[i].enabled) {
|
|
this.tools[i].cleanup();
|
|
}
|
|
}
|
|
},
|
|
selectPanel: function selectPanel(index) {
|
|
if (typeof index !== 'number') {
|
|
index = this.tools.indexOf(index);
|
|
}
|
|
if (index === activePanel) {
|
|
return;
|
|
}
|
|
activePanel = index;
|
|
var tools = this.tools;
|
|
for (var j = 0; j < tools.length; ++j) {
|
|
if (j === index) {
|
|
buttons[j].setAttribute('class', 'active');
|
|
tools[j].active = true;
|
|
tools[j].panel.removeAttribute('hidden');
|
|
} else {
|
|
buttons[j].setAttribute('class', '');
|
|
tools[j].active = false;
|
|
tools[j].panel.setAttribute('hidden', 'true');
|
|
}
|
|
}
|
|
}
|
|
};
|
|
})();
|