624 lines
18 KiB
JavaScript
624 lines
18 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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/* eslint-disable no-var */
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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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const divs = document.querySelectorAll(`span[${fontAttribute}]`);
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for (const div of divs) {
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div.className = "";
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}
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}
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function resetSelection() {
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const divs = document.querySelectorAll(`span[${fontAttribute}]`);
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for (const div of divs) {
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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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const divs = document.querySelectorAll(
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`span[${fontAttribute}=${fontName}]`
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);
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for (const div of divs) {
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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 (
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!e.target.dataset.fontName ||
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e.target.tagName.toUpperCase() !== "SPAN"
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) {
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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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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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const 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 = URL.createObjectURL(
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new Blob([fontObj.data], { type: fontObj.mimeType })
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);
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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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const 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 () {
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selectFont(fontName, select.checked);
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});
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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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var opMap;
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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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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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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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// 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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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
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? 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) {
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// array
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var simpleArgs = [],
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i,
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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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// eslint-disable-next-line no-shadow
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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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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(
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MAX_OPERATORS_COUNT,
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operatorList.fnArray.length
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);
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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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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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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;
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case 67: // continue
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dom.removeEventListener("keydown", listener);
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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);
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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(pdfjsLib) {},
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enabled: false,
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active: false,
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// Stats specific functions.
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add(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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const 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, div: wrapper });
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stats.sort(function (a, b) {
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return a.pageNumber - b.pageNumber;
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});
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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() {
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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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window.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: [FontInspector, StepperManager, Stats],
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enable(ids) {
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var all = false,
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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.includes(tool.id)) {
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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;
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var indexB = ids.indexOf(b.id);
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indexB = indexB < 0 ? tools.length : indexB;
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return indexA - indexB;
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});
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}
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},
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init(pdfjsLib, container) {
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/*
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* Basic Layout:
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* PDFBug
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* Controls
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* Panels
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* Panel
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* Panel
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* ...
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*/
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|
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 (separate multiple by commas).";
|
|
}
|
|
buttons.push(panelButton);
|
|
}
|
|
this.selectPanel(0);
|
|
},
|
|
cleanup() {
|
|
for (var i = 0, ii = this.tools.length; i < ii; i++) {
|
|
if (this.tools[i].enabled) {
|
|
this.tools[i].cleanup();
|
|
}
|
|
}
|
|
},
|
|
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");
|
|
}
|
|
}
|
|
},
|
|
};
|
|
})();
|