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How to use TextLayerRenderTask method in wpt

Best JavaScript code snippet using wpt

text_layer_builder.js

Source:text_layer_builder.js

1/**2 * @licstart The following is the entire license notice for the3 * JavaScript code in this page4 *5 * Copyright 2022 Mozilla Foundation6 *7 * Licensed under the Apache License, Version 2.0 (the "License");8 * you may not use this file except in compliance with the License.9 * You may obtain a copy of the License at10 *11 *     http://www.apache.org/licenses/LICENSE-2.012 *13 * Unless required by applicable law or agreed to in writing, software14 * distributed under the License is distributed on an "AS IS" BASIS,15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.16 * See the License for the specific language governing permissions and17 * limitations under the License.18 *19 * @licend The above is the entire license notice for the20 * JavaScript code in this page21 */22"use strict";23Object.defineProperty(exports, "__esModule", {24  value: true25});26exports.TextLayerBuilder = void 0;27var _pdf = require("../pdf");28const EXPAND_DIVS_TIMEOUT = 300;29class TextLayerBuilder {30  constructor({31    textLayerDiv,32    eventBus,33    pageIndex,34    viewport,35    highlighter = null,36    enhanceTextSelection = false37  }) {38    this.textLayerDiv = textLayerDiv;39    this.eventBus = eventBus;40    this.textContent = null;41    this.textContentItemsStr = [];42    this.textContentStream = null;43    this.renderingDone = false;44    this.pageNumber = pageIndex + 1;45    this.viewport = viewport;46    this.textDivs = [];47    this.textLayerRenderTask = null;48    this.highlighter = highlighter;49    this.enhanceTextSelection = enhanceTextSelection;50    this._bindMouse();51  }52  _finishRendering() {53    this.renderingDone = true;54    if (!this.enhanceTextSelection) {55      const endOfContent = document.createElement("div");56      endOfContent.className = "endOfContent";57      this.textLayerDiv.append(endOfContent);58    }59    this.eventBus.dispatch("textlayerrendered", {60      source: this,61      pageNumber: this.pageNumber,62      numTextDivs: this.textDivs.length63    });64  }65  render(timeout = 0) {66    if (!(this.textContent || this.textContentStream) || this.renderingDone) {67      return;68    }69    this.cancel();70    this.textDivs.length = 0;71    this.highlighter?.setTextMapping(this.textDivs, this.textContentItemsStr);72    const textLayerFrag = document.createDocumentFragment();73    this.textLayerRenderTask = (0, _pdf.renderTextLayer)({74      textContent: this.textContent,75      textContentStream: this.textContentStream,76      container: textLayerFrag,77      viewport: this.viewport,78      textDivs: this.textDivs,79      textContentItemsStr: this.textContentItemsStr,80      timeout,81      enhanceTextSelection: this.enhanceTextSelection82    });83    this.textLayerRenderTask.promise.then(() => {84      this.textLayerDiv.append(textLayerFrag);85      this._finishRendering();86      this.highlighter?.enable();87    }, function (reason) {});88  }89  cancel() {90    if (this.textLayerRenderTask) {91      this.textLayerRenderTask.cancel();92      this.textLayerRenderTask = null;93    }94    this.highlighter?.disable();95  }96  setTextContentStream(readableStream) {97    this.cancel();98    this.textContentStream = readableStream;99  }100  setTextContent(textContent) {101    this.cancel();102    this.textContent = textContent;103  }104  _bindMouse() {105    const div = this.textLayerDiv;106    let expandDivsTimer = null;107    div.addEventListener("mousedown", evt => {108      if (this.enhanceTextSelection && this.textLayerRenderTask) {109        this.textLayerRenderTask.expandTextDivs(true);110        if (expandDivsTimer) {111          clearTimeout(expandDivsTimer);112          expandDivsTimer = null;113        }114        return;115      }116      const end = div.querySelector(".endOfContent");117      if (!end) {118        return;119      }120      let adjustTop = evt.target !== div;121      adjustTop = adjustTop && window.getComputedStyle(end).getPropertyValue("-moz-user-select") !== "none";122      if (adjustTop) {123        const divBounds = div.getBoundingClientRect();124        const r = Math.max(0, (evt.pageY - divBounds.top) / divBounds.height);125        end.style.top = (r * 100).toFixed(2) + "%";126      }127      end.classList.add("active");128    });129    div.addEventListener("mouseup", () => {130      if (this.enhanceTextSelection && this.textLayerRenderTask) {131        expandDivsTimer = setTimeout(() => {132          if (this.textLayerRenderTask) {133            this.textLayerRenderTask.expandTextDivs(false);134          }135          expandDivsTimer = null;136        }, EXPAND_DIVS_TIMEOUT);137        return;138      }139      const end = div.querySelector(".endOfContent");140      if (!end) {141        return;142      }143      end.style.top = "";144      end.classList.remove("active");145    });146  }147}...

pdfjs-text-layer.component.ts

Source:pdfjs-text-layer.component.ts

...38  }39  ngOnInit() {40  }41  ngOnDestroy() {42    this.cancelTextLayerRenderTask();43  }44  private cancelTextLayerRenderTask() {45    if (!!this.textLayerRenderTask && this.textLayerRenderTask.cancel) {46      this.textLayerRenderTask.cancel();47    }48  }49  private writeTextLayer() {50    this.cancelTextLayerRenderTask();51    if (!!this.viewport && !!this.pdfPageProxy) {52      const container = this.document.createDocumentFragment();53      this.pdfPageProxy.getTextContent().then((textContent: TextContent) => {54        this.textLayerRenderTask = this.API.renderTextLayer({55          textContent,56          container,57          viewport: this.viewport58        });59        this.textLayerRenderTask.promise.then(() => {60          this.clear();61          (this.elementRef.nativeElement as HTMLElement).insertBefore(container, this.elementRef.nativeElement.firstChild);62        }, (error: any) => {63          console.log('error', error);64          if (error.name !== 'RenderingCancelledException') {...

Using AI Code Generation

1var task = new TextLayerRenderTask({2  container: document.getElementById('textLayer'),3  viewport: pdfPage.getViewport(scale),4});5task.promise.then(function () {6  console.log('Text rendered');7});

Using AI Code Generation

1var textLayer = new TextLayerBuilder({2  textLayerDiv: document.getElementById('textLayer'),3  viewport: pdfPage.getViewport(1.0)4});5pdfPage.getTextContent().then(function(textContent) {6  textLayer.setTextContent(textContent);7  textLayer.render();8});9var TextLayerBuilder = function TextLayerBuilder(options) {10  this.textLayerDiv = options.textLayerDiv;11  this.layoutDone = false;12  this.divContentDone = false;13  this.pageIdx = options.pageIndex;14  this.pageNumber = this.pageIdx + 1;15  this.matches = [];16  this.viewport = options.viewport;17  this.textDivs = [];18};19TextLayerBuilder.prototype = {20  setTextContent: function TextLayerBuilder_setTextContent(textContent) {21    this.textContent = textContent;22    this.render(TEXT_LAYER_RENDER_DELAY);23  },24  render: function TextLayerBuilder_render(timeout) {25    var self = this;26    if (!timeout) {27      clearTimeout(this.renderTimer);28      this.renderTimer = null;29      this._render();30    } else {31      if (!this.renderTimer) {32        this.renderTimer = setTimeout(function() {33          self.renderTimer = null;34          self._render();35        }, timeout);36      }37    }38  },39  _render: function TextLayerBuilder_render() {40    var textLayerFrag = document.createDocumentFragment();41    this.textDivs = [];42    var textItems = this.textContent.items;43    var textDivs = this.textDivs;44    var viewport = this.viewport;45    for (var i = 0, len = textItems.length; i < len; i++) {46      var textItem = textItems[i];47      var transform = viewport.transform;48      var tx = PDFJS.Util.transform(49        [textItem.transform[4], textItem.transform[5], 1]);50      var style = 'position: absolute; left: ' + tx[0] + 'px; top: ' +51        tx[1] + 'px; font-size: ' + textItem.transform[0] + 'px;';52      var textDiv = document.createElement('div');53      textDiv.setAttribute('style', style);54      textDiv.textContent = textItem.str;55      textLayerFrag.appendChild(textDiv);56      textDivs.push(textDiv);57    }

Using AI Code Generation

1var textLayerDiv = document.getElementById('textLayer');2var textLayer = new TextLayerBuilder({3});4pdfPage.getTextContent().then(function(textContent) {5  textLayer.setTextContent(textContent);6  textLayer.render();7});8var TextLayerBuilder = function TextLayerBuilder(options) {9  this.textLayerDiv = options.textLayerDiv;10  this.textContent = null;11  this.renderingDone = false;12  this.pageIdx = options.pageIndex;13  this.pageNumber = this.pageIdx + 1;14  this.matches = [];15  this.viewport = options.viewport;16  this.textDivs = [];17};18TextLayerBuilder.prototype = {19  setTextContent: function TextLayerBuilder_setTextContent(textContent) {20    this.textContent = textContent;21  },22  render: function TextLayerBuilder_render(timeout) {23    var textLayerFrag = document.createDocumentFragment();24    this.textDivs = [];25    var textItems = this.textContent.items;26    var textDivs = this.textDivs;27    var viewport = this.viewport;28    for (var i = 0, len = textItems.length; i < len; i++) {29      var textItem = textItems[i];30      var transform = viewport.transform;31      var div = document.createElement('div');32      div.setAttribute('dir', textItem.dir);33      this.textDivs.push(div);34      var tx = PDFJS.Util.transform(35        [textItem.transform[4], textItem.transform[5], 0]);36      PDFJS.Util.applyStyles(div, {37        transform: PDFJS.Util.transform(38        left: Math.floor(tx[0]) + 'px',39        top: Math.floor(tx[1]) + 'px',40        fontSize: Math.floor(textItem.transform[3] * 100) + '%'41      });42      if (textItem.fontName !== PDFJS.FontInspector.getSerifFontName()) {43        div.style.fontFamily = textItem.fontName;44      }45      div.textContent = textItem.str;46      textLayerFrag.appendChild(div);47    }48    this.textLayerDiv.appendChild(textLayerFrag);49    this.renderingDone = true;50  }51};

Using AI Code Generation

1var task = new TextLayerRenderTask({2  container: document.getElementById("div"),3});4task.promise.then(function () {5  console.log("done");6});7var TextLayerRenderTask = (function TextLayerRenderTaskClosure() {8  function TextLayerRenderTask(textLayerRenderParameters) {9    this._textContent = textLayerRenderParameters.textContent;10    this._container = textLayerRenderParameters.container;11    this._viewport = textLayerRenderParameters.viewport;12    this._textDivs = textLayerRenderParameters.textDivs;13    this._enhanceTextSelection = textLayerRenderParameters.enhanceTextSelection;14  }15  TextLayerRenderTask.prototype = {16    promise: function TextLayerRenderTask_promise() {17      return Promise.resolve();18    }19  };20  return TextLayerRenderTask;21})();22    canvas = document.getElementById('the-canvas'),23    ctx = canvas.getContext('2d');24pdfjsLib.getDocument(url).promise.then(function(pdfDoc_) {25  pdfDoc = pdfDoc_;26  renderPage(pageNum);27});28function renderPage(num) {29  pageRendering = true;30  pdfDoc.getPage(num).then(function(page) {31    var viewport = page.getViewport({scale: scale});32    canvas.height = viewport.height;33    canvas.width = viewport.width;34    var renderContext = {35    };36    var renderTask = page.render(renderContext);37    renderTask.promise.then(function () {38      pageRendering = false;39      if (pageNumPending !== null) {40        renderPage(pageNumPending);41        pageNumPending = null;42      }43    });44  });45  pdfDoc.getPage(num).then(function(page) {46    var textContent = page.getTextContent();47    textContent.then(function(text){48      console.log(text);49    });50  });51}

Using AI Code Generation

1var pdfjsLib = require('pdfjs-dist');2pdfjsLib.getDocument('file.pdf').then(function(pdf) {3  pdf.getPage(1).then(function(page) {4    var viewport = page.getViewport(1.0);5    var textContent = page.getTextContent();6    textContent.then(function(textContent) {7      var textLayer = new TextLayerBuilder({8        textLayerDiv: document.getElementById("textLayer"),9      });10      textLayer.setTextContent(textContent);11      textLayer.render();12    });13  });14});15var pdfjsLib = require('pdfjs-dist');16pdfjsLib.getDocument('file.pdf').then(function(pdf) {17  pdf.getPage(1).then(function(page) {18    var viewport = page.getViewport(1.0);19    var textContent = page.getTextContent();20    textContent.then(function(textContent) {21      var textLayer = new TextLayerBuilder({22        textLayerDiv: document.getElementById("textLayer"),23      });24      textLayer.setTextContent(textContent);25      textLayer.render();26    });27  });28});29    at TextLayerBuilder.setTextContent (C:\Users\user\Documents\pdfjs\wptextlayer.js:72:27)

Using AI Code Generation

1var pdfjsLib = require('pdfjs-dist');2var fs = require('fs');3var loadingTask = pdfjsLib.getDocument(pdfPath);4loadingTask.promise.then(function(pdf) {5  console.log('PDF loaded');6  var pageNumber = 1;7  pdf.getPage(pageNumber).then(function(page) {8    console.log('Page loaded');9    var viewport = page.getViewport(1.0);10    var canvas = document.createElement('canvas');11    var context = canvas.getContext('2d');12    canvas.height = viewport.height;13    canvas.width = viewport.width;14    var renderContext = {15    };16    var renderTask = page.render(renderContext);17    renderTask.promise.then(function () {18      console.log('Page rendered');19      var task = page.getTextContent();20      task.then(function (textContent) {21        console.log('Text content loaded');22        var textLayerDiv = document.getElementById('textLayer');23        var textLayer = new TextLayerBuilder({24        });25        textLayer.setTextContent(textContent);26        textLayer.render();27      });28    });29  });30}, function (reason) {31  console.error(reason);32});33'use strict';34var TextLayerRenderTask = (function TextLayerRenderTaskClosure() {35  function TextLayerRenderTask(textLayer) {36    this._textLayer = textLayer;37    this._renderingDone = false;38    this._capability = createPromiseCapability();39    this._renderTimer = null;40    this._renderingTimer = null;41    this._resumeTimer = null;42  }43  TextLayerRenderTask.prototype = {

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