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/* 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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/* eslint-disable no-var */ |
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|
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'use strict'; |
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|
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var FontInspector = (function FontInspectorClosure() { |
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var fonts, createObjectURL; |
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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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|
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fonts = document.createElement('div'); |
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panel.appendChild(fonts); |
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|
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createObjectURL = pdfjsLib.createObjectURL; |
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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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download.href = createObjectURL(fontObj.data, fontObj.mimeType); |
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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(() => { |
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if (this.active) { |
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resetSelection(); |
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} |
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}, 2000); |
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}, |
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}; |
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})(); |
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|
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var opMap; |
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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(pdfjsLib) { |
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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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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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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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|
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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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|
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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.substring(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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|
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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(operatorList) { |
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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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this.updateOperatorList(operatorList); |
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}, |
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updateOperatorList: function updateOperatorList(operatorList) { |
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var self = this; |
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|
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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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|
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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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|
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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.includes(i); |
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var args = operatorList.argsArray[i] || []; |
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|
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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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|
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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) { |
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return a - b; |
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}); |
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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); |
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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; |
| 413 |
case 67: // continue |
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dom.removeEventListener('keydown', listener); |
| 415 |
var breakPoint = self.getNextBreakPoint(); |
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self.nextBreakPoint = breakPoint; |
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self.goTo(-1); |
| 418 |
callback(); |
| 419 |
break; |
| 420 |
} |
| 421 |
}; |
| 422 |
dom.addEventListener('keydown', listener); |
| 423 |
self.goTo(idx); |
| 424 |
}, |
| 425 |
goTo: function goTo(idx) { |
| 426 |
var allRows = this.panel.getElementsByClassName('line'); |
| 427 |
for (var x = 0, xx = allRows.length; x < xx; ++x) { |
| 428 |
var row = allRows[x]; |
| 429 |
if ((row.dataset.idx | 0) === idx) { |
| 430 |
row.style.backgroundColor = 'rgb(251,250,207)'; |
| 431 |
row.scrollIntoView(); |
| 432 |
} else { |
| 433 |
row.style.backgroundColor = null; |
| 434 |
} |
| 435 |
} |
| 436 |
}, |
| 437 |
}; |
| 438 |
return Stepper; |
| 439 |
})(); |
| 440 |
|
| 441 |
var Stats = (function Stats() { |
| 442 |
var stats = []; |
| 443 |
function clear(node) { |
| 444 |
while (node.hasChildNodes()) { |
| 445 |
node.removeChild(node.lastChild); |
| 446 |
} |
| 447 |
} |
| 448 |
function getStatIndex(pageNumber) { |
| 449 |
for (var i = 0, ii = stats.length; i < ii; ++i) { |
| 450 |
if (stats[i].pageNumber === pageNumber) { |
| 451 |
return i; |
| 452 |
} |
| 453 |
} |
| 454 |
return false; |
| 455 |
} |
| 456 |
return { |
| 457 |
// Properties/functions needed by PDFBug. |
| 458 |
id: 'Stats', |
| 459 |
name: 'Stats', |
| 460 |
panel: null, |
| 461 |
manager: null, |
| 462 |
init(pdfjsLib) { |
| 463 |
this.panel.setAttribute('style', 'padding: 5px;'); |
| 464 |
}, |
| 465 |
enabled: false, |
| 466 |
active: false, |
| 467 |
// Stats specific functions. |
| 468 |
add(pageNumber, stat) { |
| 469 |
if (!stat) { |
| 470 |
return; |
| 471 |
} |
| 472 |
var statsIndex = getStatIndex(pageNumber); |
| 473 |
if (statsIndex !== false) { |
| 474 |
var b = stats[statsIndex]; |
| 475 |
this.panel.removeChild(b.div); |
| 476 |
stats.splice(statsIndex, 1); |
| 477 |
} |
| 478 |
var wrapper = document.createElement('div'); |
| 479 |
wrapper.className = 'stats'; |
| 480 |
var title = document.createElement('div'); |
| 481 |
title.className = 'title'; |
| 482 |
title.textContent = 'Page: ' + pageNumber; |
| 483 |
var statsDiv = document.createElement('div'); |
| 484 |
statsDiv.textContent = stat.toString(); |
| 485 |
wrapper.appendChild(title); |
| 486 |
wrapper.appendChild(statsDiv); |
| 487 |
stats.push({ pageNumber, div: wrapper, }); |
| 488 |
stats.sort(function(a, b) { |
| 489 |
return a.pageNumber - b.pageNumber; |
| 490 |
}); |
| 491 |
clear(this.panel); |
| 492 |
for (var i = 0, ii = stats.length; i < ii; ++i) { |
| 493 |
this.panel.appendChild(stats[i].div); |
| 494 |
} |
| 495 |
}, |
| 496 |
cleanup() { |
| 497 |
stats = []; |
| 498 |
clear(this.panel); |
| 499 |
}, |
| 500 |
}; |
| 501 |
})(); |
| 502 |
|
| 503 |
// Manages all the debugging tools. |
| 504 |
window.PDFBug = (function PDFBugClosure() { |
| 505 |
var panelWidth = 300; |
| 506 |
var buttons = []; |
| 507 |
var activePanel = null; |
| 508 |
|
| 509 |
return { |
| 510 |
tools: [ |
| 511 |
FontInspector, |
| 512 |
StepperManager, |
| 513 |
Stats |
| 514 |
], |
| 515 |
enable(ids) { |
| 516 |
var all = false, tools = this.tools; |
| 517 |
if (ids.length === 1 && ids[0] === 'all') { |
| 518 |
all = true; |
| 519 |
} |
| 520 |
for (var i = 0; i < tools.length; ++i) { |
| 521 |
var tool = tools[i]; |
| 522 |
if (all || ids.includes(tool.id)) { |
| 523 |
tool.enabled = true; |
| 524 |
} |
| 525 |
} |
| 526 |
if (!all) { |
| 527 |
// Sort the tools by the order they are enabled. |
| 528 |
tools.sort(function(a, b) { |
| 529 |
var indexA = ids.indexOf(a.id); |
| 530 |
indexA = indexA < 0 ? tools.length : indexA; |
| 531 |
var indexB = ids.indexOf(b.id); |
| 532 |
indexB = indexB < 0 ? tools.length : indexB; |
| 533 |
return indexA - indexB; |
| 534 |
}); |
| 535 |
} |
| 536 |
}, |
| 537 |
init(pdfjsLib, container) { |
| 538 |
/* |
| 539 |
* Basic Layout: |
| 540 |
* PDFBug |
| 541 |
* Controls |
| 542 |
* Panels |
| 543 |
* Panel |
| 544 |
* Panel |
| 545 |
* ... |
| 546 |
*/ |
| 547 |
var ui = document.createElement('div'); |
| 548 |
ui.id = 'PDFBug'; |
| 549 |
|
| 550 |
var controls = document.createElement('div'); |
| 551 |
controls.setAttribute('class', 'controls'); |
| 552 |
ui.appendChild(controls); |
| 553 |
|
| 554 |
var panels = document.createElement('div'); |
| 555 |
panels.setAttribute('class', 'panels'); |
| 556 |
ui.appendChild(panels); |
| 557 |
|
| 558 |
container.appendChild(ui); |
| 559 |
container.style.right = panelWidth + 'px'; |
| 560 |
|
| 561 |
// Initialize all the debugging tools. |
| 562 |
var tools = this.tools; |
| 563 |
var self = this; |
| 564 |
for (var i = 0; i < tools.length; ++i) { |
| 565 |
var tool = tools[i]; |
| 566 |
var panel = document.createElement('div'); |
| 567 |
var panelButton = document.createElement('button'); |
| 568 |
panelButton.textContent = tool.name; |
| 569 |
panelButton.addEventListener('click', (function(selected) { |
| 570 |
return function(event) { |
| 571 |
event.preventDefault(); |
| 572 |
self.selectPanel(selected); |
| 573 |
}; |
| 574 |
})(i)); |
| 575 |
controls.appendChild(panelButton); |
| 576 |
panels.appendChild(panel); |
| 577 |
tool.panel = panel; |
| 578 |
tool.manager = this; |
| 579 |
if (tool.enabled) { |
| 580 |
tool.init(pdfjsLib); |
| 581 |
} else { |
| 582 |
panel.textContent = tool.name + ' is disabled. To enable add ' + |
| 583 |
' "' + tool.id + '" to the pdfBug parameter ' + |
| 584 |
'and refresh (separate multiple by commas).'; |
| 585 |
} |
| 586 |
buttons.push(panelButton); |
| 587 |
} |
| 588 |
this.selectPanel(0); |
| 589 |
}, |
| 590 |
cleanup() { |
| 591 |
for (var i = 0, ii = this.tools.length; i < ii; i++) { |
| 592 |
if (this.tools[i].enabled) { |
| 593 |
this.tools[i].cleanup(); |
| 594 |
} |
| 595 |
} |
| 596 |
}, |
| 597 |
selectPanel(index) { |
| 598 |
if (typeof index !== 'number') { |
| 599 |
index = this.tools.indexOf(index); |
| 600 |
} |
| 601 |
if (index === activePanel) { |
| 602 |
return; |
| 603 |
} |
| 604 |
activePanel = index; |
| 605 |
var tools = this.tools; |
| 606 |
for (var j = 0; j < tools.length; ++j) { |
| 607 |
if (j === index) { |
| 608 |
buttons[j].setAttribute('class', 'active'); |
| 609 |
tools[j].active = true; |
| 610 |
tools[j].panel.removeAttribute('hidden'); |
| 611 |
} else { |
| 612 |
buttons[j].setAttribute('class', ''); |
| 613 |
tools[j].active = false; |
| 614 |
tools[j].panel.setAttribute('hidden', 'true'); |
| 615 |
} |
| 616 |
} |
| 617 |
}, |
| 618 |
}; |
| 619 |
})(); |
| 620 |
|
