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540 lines (522 loc) · 17.2 KB
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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/* Copyright 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* globals PDFJS */
'use strict';
var FontInspector = (function FontInspectorClosure() {
var fonts;
var panelWidth = 300;
var active = false;
var fontAttribute = 'data-font-name';
function removeSelection() {
var divs = document.querySelectorAll('div[' + fontAttribute + ']');
for (var i = 0, ii = divs.length; i < ii; ++i) {
var div = divs[i];
div.className = '';
}
}
function resetSelection() {
var divs = document.querySelectorAll('div[' + fontAttribute + ']');
for (var i = 0, ii = divs.length; i < ii; ++i) {
var div = divs[i];
div.className = 'debuggerHideText';
}
}
function selectFont(fontName, show) {
var divs = document.querySelectorAll('div[' + fontAttribute + '=' +
fontName + ']');
for (var i = 0, ii = divs.length; i < ii; ++i) {
var div = divs[i];
div.className = show ? 'debuggerShowText' : 'debuggerHideText';
}
}
function textLayerClick(e) {
if (!e.target.dataset.fontName || e.target.tagName.toUpperCase() !== 'DIV')
return;
var fontName = e.target.dataset.fontName;
var selects = document.getElementsByTagName('input');
for (var i = 0; i < selects.length; ++i) {
var select = selects[i];
if (select.dataset.fontName != fontName) continue;
select.checked = !select.checked;
selectFont(fontName, select.checked);
select.scrollIntoView();
}
}
return {
// Properties/functions needed by PDFBug.
id: 'FontInspector',
name: 'Font Inspector',
panel: null,
manager: null,
init: function init() {
var panel = this.panel;
panel.setAttribute('style', 'padding: 5px;');
var tmp = document.createElement('button');
tmp.addEventListener('click', resetSelection);
tmp.textContent = 'Refresh';
panel.appendChild(tmp);
fonts = document.createElement('div');
panel.appendChild(fonts);
},
enabled: false,
get active() {
return active;
},
set active(value) {
active = value;
if (active) {
document.body.addEventListener('click', textLayerClick, true);
resetSelection();
} else {
document.body.removeEventListener('click', textLayerClick, true);
removeSelection();
}
},
// FontInspector specific functions.
fontAdded: function fontAdded(fontObj, url) {
function properties(obj, list) {
var moreInfo = document.createElement('table');
for (var i = 0; i < list.length; i++) {
var tr = document.createElement('tr');
var td1 = document.createElement('td');
td1.textContent = list[i];
tr.appendChild(td1);
var td2 = document.createElement('td');
td2.textContent = obj[list[i]].toString();
tr.appendChild(td2);
moreInfo.appendChild(tr);
}
return moreInfo;
}
var moreInfo = properties(fontObj, ['name', 'type']);
var m = /url\(['"]?([^\)"']+)/.exec(url);
var fontName = fontObj.loadedName;
var font = document.createElement('div');
var name = document.createElement('span');
name.textContent = fontName;
var download = document.createElement('a');
download.href = m[1];
download.textContent = 'Download';
var logIt = document.createElement('a');
logIt.href = '';
logIt.textContent = 'Log';
logIt.addEventListener('click', function(event) {
event.preventDefault();
console.log(fontObj);
});
var select = document.createElement('input');
select.setAttribute('type', 'checkbox');
select.dataset.fontName = fontName;
select.addEventListener('click', (function(select, fontName) {
return (function() {
selectFont(fontName, select.checked);
});
})(select, fontName));
font.appendChild(select);
font.appendChild(name);
font.appendChild(document.createTextNode(' '));
font.appendChild(download);
font.appendChild(document.createTextNode(' '));
font.appendChild(logIt);
font.appendChild(moreInfo);
fonts.appendChild(font);
// Somewhat of a hack, should probably add a hook for when the text layer
// is done rendering.
setTimeout(function() {
if (this.active)
resetSelection();
}.bind(this), 2000);
}
};
})();
// Manages all the page steppers.
var StepperManager = (function StepperManagerClosure() {
var steppers = [];
var stepperDiv = null;
var stepperControls = null;
var stepperChooser = null;
var breakPoints = {};
return {
// Properties/functions needed by PDFBug.
id: 'Stepper',
name: 'Stepper',
panel: null,
manager: null,
init: function init() {
var self = this;
this.panel.setAttribute('style', 'padding: 5px;');
stepperControls = document.createElement('div');
stepperChooser = document.createElement('select');
stepperChooser.addEventListener('change', function(event) {
self.selectStepper(this.value);
});
stepperControls.appendChild(stepperChooser);
stepperDiv = document.createElement('div');
this.panel.appendChild(stepperControls);
this.panel.appendChild(stepperDiv);
if (sessionStorage.getItem('pdfjsBreakPoints'))
breakPoints = JSON.parse(sessionStorage.getItem('pdfjsBreakPoints'));
},
enabled: false,
active: false,
// Stepper specific functions.
create: function create(pageIndex) {
var debug = document.createElement('div');
debug.id = 'stepper' + pageIndex;
debug.setAttribute('hidden', true);
debug.className = 'stepper';
stepperDiv.appendChild(debug);
var b = document.createElement('option');
b.textContent = 'Page ' + (pageIndex + 1);
b.value = pageIndex;
stepperChooser.appendChild(b);
var initBreakPoints = breakPoints[pageIndex] || [];
var stepper = new Stepper(debug, pageIndex, initBreakPoints);
steppers.push(stepper);
if (steppers.length === 1)
this.selectStepper(pageIndex, false);
return stepper;
},
selectStepper: function selectStepper(pageIndex, selectPanel) {
if (selectPanel)
this.manager.selectPanel(1);
for (var i = 0; i < steppers.length; ++i) {
var stepper = steppers[i];
if (stepper.pageIndex == pageIndex)
stepper.panel.removeAttribute('hidden');
else
stepper.panel.setAttribute('hidden', true);
}
var options = stepperChooser.options;
for (var i = 0; i < options.length; ++i) {
var option = options[i];
option.selected = option.value == pageIndex;
}
},
saveBreakPoints: function saveBreakPoints(pageIndex, bps) {
breakPoints[pageIndex] = bps;
sessionStorage.setItem('pdfjsBreakPoints', JSON.stringify(breakPoints));
}
};
})();
// The stepper for each page's IRQueue.
var Stepper = (function StepperClosure() {
// Shorter way to create element and optionally set textContent.
function c(tag, textContent) {
var d = document.createElement(tag);
if (textContent)
d.textContent = textContent;
return d;
}
function glyphsToString(glyphs) {
var out = '';
for (var i = 0; i < glyphs.length; i++) {
if (glyphs[i] === null) {
out += ' ';
} else {
out += glyphs[i].fontChar;
}
}
return out;
}
var opMap = null;
var glyphCommands = {
'showText': 0,
'showSpacedText': 0,
'nextLineShowText': 0,
'nextLineSetSpacingShowText': 2
};
function Stepper(panel, pageIndex, initialBreakPoints) {
this.panel = panel;
this.breakPoint = 0;
this.nextBreakPoint = null;
this.pageIndex = pageIndex;
this.breakPoints = initialBreakPoints;
this.currentIdx = -1;
this.operatorListIdx = 0;
}
Stepper.prototype = {
init: function init() {
var panel = this.panel;
var content = c('div', 'c=continue, s=step');
var table = c('table');
content.appendChild(table);
table.cellSpacing = 0;
var headerRow = c('tr');
table.appendChild(headerRow);
headerRow.appendChild(c('th', 'Break'));
headerRow.appendChild(c('th', 'Idx'));
headerRow.appendChild(c('th', 'fn'));
headerRow.appendChild(c('th', 'args'));
panel.appendChild(content);
this.table = table;
if (!opMap) {
opMap = Object.create(null);
for (var key in PDFJS.OPS) {
opMap[PDFJS.OPS[key]] = key;
}
}
},
updateOperatorList: function updateOperatorList(operatorList) {
var self = this;
for (var i = this.operatorListIdx; i < operatorList.fnArray.length; i++) {
var line = c('tr');
line.className = 'line';
line.dataset.idx = i;
this.table.appendChild(line);
var checked = this.breakPoints.indexOf(i) != -1;
var args = operatorList.argsArray[i] ? operatorList.argsArray[i] : [];
var breakCell = c('td');
var cbox = c('input');
cbox.type = 'checkbox';
cbox.className = 'points';
cbox.checked = checked;
cbox. {
return function() {
if (this.checked)
self.breakPoints.push(x);
else
self.breakPoints.splice(self.breakPoints.indexOf(x), 1);
StepperManager.saveBreakPoints(self.pageIndex, self.breakPoints);
};
})(i);
breakCell.appendChild(cbox);
line.appendChild(breakCell);
line.appendChild(c('td', i.toString()));
var fn = opMap[operatorList.fnArray[i]];
var decArgs = args;
if (fn in glyphCommands) {
var glyphIndex = glyphCommands[fn];
var glyphs = args[glyphIndex];
var decArgs = args.slice();
var newArg;
if (fn === 'showSpacedText') {
newArg = [];
for (var j = 0; j < glyphs.length; j++) {
if (typeof glyphs[j] === 'number') {
newArg.push(glyphs[j]);
} else {
newArg.push(glyphsToString(glyphs[j]));
}
}
} else {
newArg = glyphsToString(glyphs);
}
decArgs[glyphIndex] = newArg;
}
line.appendChild(c('td', fn));
line.appendChild(c('td', JSON.stringify(decArgs)));
}
},
getNextBreakPoint: function getNextBreakPoint() {
this.breakPoints.sort(function(a, b) { return a - b; });
for (var i = 0; i < this.breakPoints.length; i++) {
if (this.breakPoints[i] > this.currentIdx)
return this.breakPoints[i];
}
return null;
},
breakIt: function breakIt(idx, callback) {
StepperManager.selectStepper(this.pageIndex, true);
var self = this;
var dom = document;
self.currentIdx = idx;
var listener = function(e) {
switch (e.keyCode) {
case 83: // step
dom.removeEventListener('keydown', listener, false);
self.nextBreakPoint = self.currentIdx + 1;
self.goTo(-1);
callback();
break;
case 67: // continue
dom.removeEventListener('keydown', listener, false);
var breakPoint = self.getNextBreakPoint();
self.nextBreakPoint = breakPoint;
self.goTo(-1);
callback();
break;
}
};
dom.addEventListener('keydown', listener, false);
self.goTo(idx);
},
goTo: function goTo(idx) {
var allRows = this.panel.getElementsByClassName('line');
for (var x = 0, xx = allRows.length; x < xx; ++x) {
var row = allRows[x];
if (row.dataset.idx == idx) {
row.style.backgroundColor = 'rgb(251,250,207)';
row.scrollIntoView();
} else {
row.style.backgroundColor = null;
}
}
}
};
return Stepper;
})();
var Stats = (function Stats() {
var stats = [];
function clear(node) {
while (node.hasChildNodes())
node.removeChild(node.lastChild);
}
function getStatIndex(pageNumber) {
for (var i = 0, ii = stats.length; i < ii; ++i)
if (stats[i].pageNumber === pageNumber)
return i;
return false;
}
return {
// Properties/functions needed by PDFBug.
id: 'Stats',
name: 'Stats',
panel: null,
manager: null,
init: function init() {
this.panel.setAttribute('style', 'padding: 5px;');
PDFJS.enableStats = true;
},
enabled: false,
active: false,
// Stats specific functions.
add: function(pageNumber, stat) {
if (!stat)
return;
var statsIndex = getStatIndex(pageNumber);
if (statsIndex !== false) {
var b = stats[statsIndex];
this.panel.removeChild(b.div);
stats.splice(statsIndex, 1);
}
var wrapper = document.createElement('div');
wrapper.className = 'stats';
var title = document.createElement('div');
title.className = 'title';
title.textContent = 'Page: ' + pageNumber;
var statsDiv = document.createElement('div');
statsDiv.textContent = stat.toString();
wrapper.appendChild(title);
wrapper.appendChild(statsDiv);
stats.push({ pageNumber: pageNumber, div: wrapper });
stats.sort(function(a, b) { return a.pageNumber - b.pageNumber; });
clear(this.panel);
for (var i = 0, ii = stats.length; i < ii; ++i)
this.panel.appendChild(stats[i].div);
}
};
})();
// Manages all the debugging tools.
var PDFBug = (function PDFBugClosure() {
var panelWidth = 300;
var buttons = [];
var activePanel = null;
return {
tools: [
FontInspector,
StepperManager,
Stats
],
enable: function(ids) {
var all = false, tools = this.tools;
if (ids.length === 1 && ids[0] === 'all')
all = true;
for (var i = 0; i < tools.length; ++i) {
var tool = tools[i];
if (all || ids.indexOf(tool.id) !== -1)
tool.enabled = true;
}
if (!all) {
// Sort the tools by the order they are enabled.
tools.sort(function(a, b) {
var indexA = ids.indexOf(a.id);
indexA = indexA < 0 ? tools.length : indexA;
var indexB = ids.indexOf(b.id);
indexB = indexB < 0 ? tools.length : indexB;
return indexA - indexB;
});
}
},
init: function init() {
/*
* 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);
var container = document.getElementById('viewerContainer');
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();
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);
},
selectPanel: function selectPanel(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');
}
}
}
};
})();