PDF.js version 1.3.10 - See mozilla/pdf.js@fc2d7e88b67fa487fc79d906ac8feaa8e84227db

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.3.6",
+  "version": "1.3.10",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"

build/pdf.combined.js

@@ -20,8 +20,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.3.6';
-PDFJS.build = '1250e35';
+PDFJS.version = '1.3.10';
+PDFJS.build = 'fc2d7e8';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -6812,6 +6812,63 @@ var FontFaceObject = (function FontFaceObjectClosure() {
 })();
 
 
+/**
+ * Optimised CSS custom property getter/setter.
+ * @class
+ */
+var CustomStyle = (function CustomStyleClosure() {
+
+  // As noted on: http://www.zachstronaut.com/posts/2009/02/17/
+  //              animate-css-transforms-firefox-webkit.html
+  // in some versions of IE9 it is critical that ms appear in this list
+  // before Moz
+  var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
+  var _cache = {};
+
+  function CustomStyle() {}
+
+  CustomStyle.getProp = function get(propName, element) {
+    // check cache only when no element is given
+    if (arguments.length === 1 && typeof _cache[propName] === 'string') {
+      return _cache[propName];
+    }
+
+    element = element || document.documentElement;
+    var style = element.style, prefixed, uPropName;
+
+    // test standard property first
+    if (typeof style[propName] === 'string') {
+      return (_cache[propName] = propName);
+    }
+
+    // capitalize
+    uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
+
+    // test vendor specific properties
+    for (var i = 0, l = prefixes.length; i < l; i++) {
+      prefixed = prefixes[i] + uPropName;
+      if (typeof style[prefixed] === 'string') {
+        return (_cache[propName] = prefixed);
+      }
+    }
+
+    //if all fails then set to undefined
+    return (_cache[propName] = 'undefined');
+  };
+
+  CustomStyle.setProp = function set(propName, element, str) {
+    var prop = this.getProp(propName);
+    if (prop !== 'undefined') {
+      element.style[prop] = str;
+    }
+  };
+
+  return CustomStyle;
+})();
+
+PDFJS.CustomStyle = CustomStyle;
+
+
 var ANNOT_MIN_SIZE = 10; // px
 
 var AnnotationUtils = (function AnnotationUtilsClosure() {
@@ -7084,6 +7141,224 @@ var AnnotationUtils = (function AnnotationUtilsClosure() {
 PDFJS.AnnotationUtils = AnnotationUtils;
 
 
+/**
+ * Text layer render parameters.
+ *
+ * @typedef {Object} TextLayerRenderParameters
+ * @property {TextContent} textContent - Text content to render (the object is
+ *   returned by the page's getTextContent() method).
+ * @property {HTMLElement} container - HTML element that will contain text runs.
+ * @property {PDFJS.PageViewport} viewport - The target viewport to properly
+ *   layout the text runs.
+ * @property {Array} textDivs - (optional) HTML elements that are correspond
+ *   the text items of the textContent input. This is output and shall be
+ *   initially be set to empty array.
+ * @property {number} timeout - (optional) Delay in milliseconds before
+ *   rendering of the text  runs occurs.
+ */
+var renderTextLayer = (function renderTextLayerClosure() {
+  var MAX_TEXT_DIVS_TO_RENDER = 100000;
+
+  var NonWhitespaceRegexp = /\S/;
+
+  function isAllWhitespace(str) {
+    return !NonWhitespaceRegexp.test(str);
+  }
+
+  function appendText(textDivs, viewport, geom, styles) {
+    var style = styles[geom.fontName];
+    var textDiv = document.createElement('div');
+    textDivs.push(textDiv);
+    if (isAllWhitespace(geom.str)) {
+      textDiv.dataset.isWhitespace = true;
+      return;
+    }
+    var tx = PDFJS.Util.transform(viewport.transform, geom.transform);
+    var angle = Math.atan2(tx[1], tx[0]);
+    if (style.vertical) {
+      angle += Math.PI / 2;
+    }
+    var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
+    var fontAscent = fontHeight;
+    if (style.ascent) {
+      fontAscent = style.ascent * fontAscent;
+    } else if (style.descent) {
+      fontAscent = (1 + style.descent) * fontAscent;
+    }
+
+    var left;
+    var top;
+    if (angle === 0) {
+      left = tx[4];
+      top = tx[5] - fontAscent;
+    } else {
+      left = tx[4] + (fontAscent * Math.sin(angle));
+      top = tx[5] - (fontAscent * Math.cos(angle));
+    }
+    textDiv.style.left = left + 'px';
+    textDiv.style.top = top + 'px';
+    textDiv.style.fontSize = fontHeight + 'px';
+    textDiv.style.fontFamily = style.fontFamily;
+
+    textDiv.textContent = geom.str;
+    // |fontName| is only used by the Font Inspector. This test will succeed
+    // when e.g. the Font Inspector is off but the Stepper is on, but it's
+    // not worth the effort to do a more accurate test.
+    if (PDFJS.pdfBug) {
+      textDiv.dataset.fontName = geom.fontName;
+    }
+    // Storing into dataset will convert number into string.
+    if (angle !== 0) {
+      textDiv.dataset.angle = angle * (180 / Math.PI);
+    }
+    // We don't bother scaling single-char text divs, because it has very
+    // little effect on text highlighting. This makes scrolling on docs with
+    // lots of such divs a lot faster.
+    if (geom.str.length > 1) {
+      if (style.vertical) {
+        textDiv.dataset.canvasWidth = geom.height * viewport.scale;
+      } else {
+        textDiv.dataset.canvasWidth = geom.width * viewport.scale;
+      }
+    }
+  }
+
+  function render(task) {
+    if (task._canceled) {
+      return;
+    }
+    var textLayerFrag = task._container;
+    var textDivs = task._textDivs;
+    var capability = task._capability;
+    var textDivsLength = textDivs.length;
+
+    // No point in rendering many divs as it would make the browser
+    // unusable even after the divs are rendered.
+    if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
+      capability.resolve();
+      return;
+    }
+
+    var canvas = document.createElement('canvas');
+    var ctx = canvas.getContext('2d', {alpha: false});
+
+    var lastFontSize;
+    var lastFontFamily;
+    for (var i = 0; i < textDivsLength; i++) {
+      var textDiv = textDivs[i];
+      if (textDiv.dataset.isWhitespace !== undefined) {
+        continue;
+      }
+
+      var fontSize = textDiv.style.fontSize;
+      var fontFamily = textDiv.style.fontFamily;
+
+      // Only build font string and set to context if different from last.
+      if (fontSize !== lastFontSize || fontFamily !== lastFontFamily) {
+        ctx.font = fontSize + ' ' + fontFamily;
+        lastFontSize = fontSize;
+        lastFontFamily = fontFamily;
+      }
+
+      var width = ctx.measureText(textDiv.textContent).width;
+      if (width > 0) {
+        textLayerFrag.appendChild(textDiv);
+        var transform;
+        if (textDiv.dataset.canvasWidth !== undefined) {
+          // Dataset values come of type string.
+          var textScale = textDiv.dataset.canvasWidth / width;
+          transform = 'scaleX(' + textScale + ')';
+        } else {
+          transform = '';
+        }
+        var rotation = textDiv.dataset.angle;
+        if (rotation) {
+          transform = 'rotate(' + rotation + 'deg) ' + transform;
+        }
+        if (transform) {
+          PDFJS.CustomStyle.setProp('transform' , textDiv, transform);
+        }
+      }
+    }
+    capability.resolve();
+  }
+
+  /**
+   * Text layer rendering task.
+   *
+   * @param {TextContent} textContent
+   * @param {HTMLElement} container
+   * @param {PDFJS.PageViewport} viewport
+   * @param {Array} textDivs
+   * @private
+   */
+  function TextLayerRenderTask(textContent, container, viewport, textDivs) {
+    this._textContent = textContent;
+    this._container = container;
+    this._viewport = viewport;
+    textDivs = textDivs || [];
+    this._textDivs = textDivs;
+    this._canceled = false;
+    this._capability = createPromiseCapability();
+    this._renderTimer = null;
+  }
+  TextLayerRenderTask.prototype = {
+    get promise() {
+      return this._capability.promise;
+    },
+
+    cancel: function TextLayer_cancel() {
+      this._canceled = true;
+      if (this._renderTimer !== null) {
+        clearTimeout(this._renderTimer);
+        this._renderTimer = null;
+      }
+      this._capability.reject('canceled');
+    },
+
+    _render: function TextLayer_render(timeout) {
+      var textItems = this._textContent.items;
+      var styles = this._textContent.styles;
+      var textDivs = this._textDivs;
+      var viewport = this._viewport;
+      for (var i = 0, len = textItems.length; i < len; i++) {
+        appendText(textDivs, viewport, textItems[i], styles);
+      }
+
+      if (!timeout) { // Render right away
+        render(this);
+      } else { // Schedule
+        var self = this;
+        this._renderTimer = setTimeout(function() {
+          render(self);
+          self._renderTimer = null;
+        }, timeout);
+      }
+    }
+  };
+
+
+  /**
+   * Starts rendering of the text layer.
+   *
+   * @param {TextLayerRenderParameters} renderParameters
+   * @returns {TextLayerRenderTask}
+   */
+  function renderTextLayer(renderParameters) {
+    var task = new TextLayerRenderTask(renderParameters.textContent,
+                                       renderParameters.container,
+                                       renderParameters.viewport,
+                                       renderParameters.textDivs);
+    task._render(renderParameters.timeout);
+    return task;
+  }
+
+  return renderTextLayer;
+})();
+
+PDFJS.renderTextLayer = renderTextLayer;
+
+
 var SVG_DEFAULTS = {
   fontStyle: 'normal',
   fontWeight: 'normal',

build/pdf.js

@@ -20,8 +20,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.3.6';
-PDFJS.build = '1250e35';
+PDFJS.version = '1.3.10';
+PDFJS.build = 'fc2d7e8';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -6865,6 +6865,63 @@ var FontFaceObject = (function FontFaceObjectClosure() {
 })();
 
 
+/**
+ * Optimised CSS custom property getter/setter.
+ * @class
+ */
+var CustomStyle = (function CustomStyleClosure() {
+
+  // As noted on: http://www.zachstronaut.com/posts/2009/02/17/
+  //              animate-css-transforms-firefox-webkit.html
+  // in some versions of IE9 it is critical that ms appear in this list
+  // before Moz
+  var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
+  var _cache = {};
+
+  function CustomStyle() {}
+
+  CustomStyle.getProp = function get(propName, element) {
+    // check cache only when no element is given
+    if (arguments.length === 1 && typeof _cache[propName] === 'string') {
+      return _cache[propName];
+    }
+
+    element = element || document.documentElement;
+    var style = element.style, prefixed, uPropName;
+
+    // test standard property first
+    if (typeof style[propName] === 'string') {
+      return (_cache[propName] = propName);
+    }
+
+    // capitalize
+    uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
+
+    // test vendor specific properties
+    for (var i = 0, l = prefixes.length; i < l; i++) {
+      prefixed = prefixes[i] + uPropName;
+      if (typeof style[prefixed] === 'string') {
+        return (_cache[propName] = prefixed);
+      }
+    }
+
+    //if all fails then set to undefined
+    return (_cache[propName] = 'undefined');
+  };
+
+  CustomStyle.setProp = function set(propName, element, str) {
+    var prop = this.getProp(propName);
+    if (prop !== 'undefined') {
+      element.style[prop] = str;
+    }
+  };
+
+  return CustomStyle;
+})();
+
+PDFJS.CustomStyle = CustomStyle;
+
+
 var ANNOT_MIN_SIZE = 10; // px
 
 var AnnotationUtils = (function AnnotationUtilsClosure() {
@@ -7137,6 +7194,225 @@ var AnnotationUtils = (function AnnotationUtilsClosure() {
 PDFJS.AnnotationUtils = AnnotationUtils;
 
 
+/**
+ * Text layer render parameters.
+ *
+ * @typedef {Object} TextLayerRenderParameters
+ * @property {TextContent} textContent - Text content to render (the object is
+ *   returned by the page's getTextContent() method).
+ * @property {HTMLElement} container - HTML element that will contain text runs.
+ * @property {PDFJS.PageViewport} viewport - The target viewport to properly
+ *   layout the text runs.
+ * @property {Array} textDivs - (optional) HTML elements that are correspond
+ *   the text items of the textContent input. This is output and shall be
+ *   initially be set to empty array.
+ * @property {number} timeout - (optional) Delay in milliseconds before
+ *   rendering of the text  runs occurs.
+ */
+var renderTextLayer = (function renderTextLayerClosure() {
+  var MAX_TEXT_DIVS_TO_RENDER = 100000;
+
+  var NonWhitespaceRegexp = /\S/;
+
+  function isAllWhitespace(str) {
+    return !NonWhitespaceRegexp.test(str);
+  }
+
+  function appendText(textDivs, viewport, geom, styles) {
+    var style = styles[geom.fontName];
+    var textDiv = document.createElement('div');
+    textDivs.push(textDiv);
+    if (isAllWhitespace(geom.str)) {
+      textDiv.dataset.isWhitespace = true;
+      return;
+    }
+    var tx = PDFJS.Util.transform(viewport.transform, geom.transform);
+    var angle = Math.atan2(tx[1], tx[0]);
+    if (style.vertical) {
+      angle += Math.PI / 2;
+    }
+    var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
+    var fontAscent = fontHeight;
+    if (style.ascent) {
+      fontAscent = style.ascent * fontAscent;
+    } else if (style.descent) {
+      fontAscent = (1 + style.descent) * fontAscent;
+    }
+
+    var left;
+    var top;
+    if (angle === 0) {
+      left = tx[4];
+      top = tx[5] - fontAscent;
+    } else {
+      left = tx[4] + (fontAscent * Math.sin(angle));
+      top = tx[5] - (fontAscent * Math.cos(angle));
+    }
+    textDiv.style.left = left + 'px';
+    textDiv.style.top = top + 'px';
+    textDiv.style.fontSize = fontHeight + 'px';
+    textDiv.style.fontFamily = style.fontFamily;
+
+    textDiv.textContent = geom.str;
+    // |fontName| is only used by the Font Inspector. This test will succeed
+    // when e.g. the Font Inspector is off but the Stepper is on, but it's
+    // not worth the effort to do a more accurate test.
+    if (PDFJS.pdfBug) {
+      textDiv.dataset.fontName = geom.fontName;
+    }
+    // Storing into dataset will convert number into string.
+    if (angle !== 0) {
+      textDiv.dataset.angle = angle * (180 / Math.PI);
+    }
+    // We don't bother scaling single-char text divs, because it has very
+    // little effect on text highlighting. This makes scrolling on docs with
+    // lots of such divs a lot faster.
+    if (geom.str.length > 1) {
+      if (style.vertical) {
+        textDiv.dataset.canvasWidth = geom.height * viewport.scale;
+      } else {
+        textDiv.dataset.canvasWidth = geom.width * viewport.scale;
+      }
+    }
+  }
+
+  function render(task) {
+    if (task._canceled) {
+      return;
+    }
+    var textLayerFrag = task._container;
+    var textDivs = task._textDivs;
+    var capability = task._capability;
+    var textDivsLength = textDivs.length;
+
+    // No point in rendering many divs as it would make the browser
+    // unusable even after the divs are rendered.
+    if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
+      capability.resolve();
+      return;
+    }
+
+    var canvas = document.createElement('canvas');
+    canvas.mozOpaque = true;
+    var ctx = canvas.getContext('2d', {alpha: false});
+
+    var lastFontSize;
+    var lastFontFamily;
+    for (var i = 0; i < textDivsLength; i++) {
+      var textDiv = textDivs[i];
+      if (textDiv.dataset.isWhitespace !== undefined) {
+        continue;
+      }
+
+      var fontSize = textDiv.style.fontSize;
+      var fontFamily = textDiv.style.fontFamily;
+
+      // Only build font string and set to context if different from last.
+      if (fontSize !== lastFontSize || fontFamily !== lastFontFamily) {
+        ctx.font = fontSize + ' ' + fontFamily;
+        lastFontSize = fontSize;
+        lastFontFamily = fontFamily;
+      }
+
+      var width = ctx.measureText(textDiv.textContent).width;
+      if (width > 0) {
+        textLayerFrag.appendChild(textDiv);
+        var transform;
+        if (textDiv.dataset.canvasWidth !== undefined) {
+          // Dataset values come of type string.
+          var textScale = textDiv.dataset.canvasWidth / width;
+          transform = 'scaleX(' + textScale + ')';
+        } else {
+          transform = '';
+        }
+        var rotation = textDiv.dataset.angle;
+        if (rotation) {
+          transform = 'rotate(' + rotation + 'deg) ' + transform;
+        }
+        if (transform) {
+          PDFJS.CustomStyle.setProp('transform' , textDiv, transform);
+        }
+      }
+    }
+    capability.resolve();
+  }
+
+  /**
+   * Text layer rendering task.
+   *
+   * @param {TextContent} textContent
+   * @param {HTMLElement} container
+   * @param {PDFJS.PageViewport} viewport
+   * @param {Array} textDivs
+   * @private
+   */
+  function TextLayerRenderTask(textContent, container, viewport, textDivs) {
+    this._textContent = textContent;
+    this._container = container;
+    this._viewport = viewport;
+    textDivs = textDivs || [];
+    this._textDivs = textDivs;
+    this._canceled = false;
+    this._capability = createPromiseCapability();
+    this._renderTimer = null;
+  }
+  TextLayerRenderTask.prototype = {
+    get promise() {
+      return this._capability.promise;
+    },
+
+    cancel: function TextLayer_cancel() {
+      this._canceled = true;
+      if (this._renderTimer !== null) {
+        clearTimeout(this._renderTimer);
+        this._renderTimer = null;
+      }
+      this._capability.reject('canceled');
+    },
+
+    _render: function TextLayer_render(timeout) {
+      var textItems = this._textContent.items;
+      var styles = this._textContent.styles;
+      var textDivs = this._textDivs;
+      var viewport = this._viewport;
+      for (var i = 0, len = textItems.length; i < len; i++) {
+        appendText(textDivs, viewport, textItems[i], styles);
+      }
+
+      if (!timeout) { // Render right away
+        render(this);
+      } else { // Schedule
+        var self = this;
+        this._renderTimer = setTimeout(function() {
+          render(self);
+          self._renderTimer = null;
+        }, timeout);
+      }
+    }
+  };
+
+
+  /**
+   * Starts rendering of the text layer.
+   *
+   * @param {TextLayerRenderParameters} renderParameters
+   * @returns {TextLayerRenderTask}
+   */
+  function renderTextLayer(renderParameters) {
+    var task = new TextLayerRenderTask(renderParameters.textContent,
+                                       renderParameters.container,
+                                       renderParameters.viewport,
+                                       renderParameters.textDivs);
+    task._render(renderParameters.timeout);
+    return task;
+  }
+
+  return renderTextLayer;
+})();
+
+PDFJS.renderTextLayer = renderTextLayer;
+
+
 var SVG_DEFAULTS = {
   fontStyle: 'normal',
   fontWeight: 'normal',

build/pdf.worker.js

@@ -20,8 +20,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.3.6';
-PDFJS.build = '1250e35';
+PDFJS.version = '1.3.10';
+PDFJS.build = 'fc2d7e8';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.3.6",
+  "version": "1.3.10",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",

web/pdf_viewer.js

@@ -34,57 +34,6 @@ var MAX_AUTO_SCALE = 1.25;
 var SCROLLBAR_PADDING = 40;
 var VERTICAL_PADDING = 5;
 
-// optimised CSS custom property getter/setter
-var CustomStyle = (function CustomStyleClosure() {
-
-  // As noted on: http://www.zachstronaut.com/posts/2009/02/17/
-  //              animate-css-transforms-firefox-webkit.html
-  // in some versions of IE9 it is critical that ms appear in this list
-  // before Moz
-  var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
-  var _cache = {};
-
-  function CustomStyle() {}
-
-  CustomStyle.getProp = function get(propName, element) {
-    // check cache only when no element is given
-    if (arguments.length === 1 && typeof _cache[propName] === 'string') {
-      return _cache[propName];
-    }
-
-    element = element || document.documentElement;
-    var style = element.style, prefixed, uPropName;
-
-    // test standard property first
-    if (typeof style[propName] === 'string') {
-      return (_cache[propName] = propName);
-    }
-
-    // capitalize
-    uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
-
-    // test vendor specific properties
-    for (var i = 0, l = prefixes.length; i < l; i++) {
-      prefixed = prefixes[i] + uPropName;
-      if (typeof style[prefixed] === 'string') {
-        return (_cache[propName] = prefixed);
-      }
-    }
-
-    //if all fails then set to undefined
-    return (_cache[propName] = 'undefined');
-  };
-
-  CustomStyle.setProp = function set(propName, element, str) {
-    var prop = this.getProp(propName);
-    if (prop !== 'undefined') {
-      element.style[prop] = str;
-    }
-  };
-
-  return CustomStyle;
-})();
-
 var NullCharactersRegExp = /\x00/g;
 
 function removeNullCharacters(str) {
@@ -955,6 +904,8 @@ var TEXT_LAYER_RENDER_DELAY = 200; // ms
  * @implements {IRenderableView}
  */
 var PDFPageView = (function PDFPageViewClosure() {
+  var CustomStyle = PDFJS.CustomStyle;
+
   /**
    * @constructs PDFPageView
    * @param {PDFPageViewOptions} options
@@ -1490,14 +1441,6 @@ var PDFPageView = (function PDFPageViewClosure() {
 })();
 
 
-var MAX_TEXT_DIVS_TO_RENDER = 100000;
-
-var NonWhitespaceRegexp = /\S/;
-
-function isAllWhitespace(str) {
-  return !NonWhitespaceRegexp.test(str);
-}
-
 /**
  * @typedef {Object} TextLayerBuilderOptions
  * @property {HTMLDivElement} textLayerDiv - The text layer container.
@@ -1524,6 +1467,7 @@ var TextLayerBuilder = (function TextLayerBuilderClosure() {
     this.viewport = options.viewport;
     this.textDivs = [];
     this.findController = options.findController || null;
+    this.textLayerRenderTask = null;
     this._bindMouse();
   }
 
@@ -1542,64 +1486,6 @@ var TextLayerBuilder = (function TextLayerBuilderClosure() {
       this.textLayerDiv.dispatchEvent(event);
     },
 
-    renderLayer: function TextLayerBuilder_renderLayer() {
-      var textLayerFrag = document.createDocumentFragment();
-      var textDivs = this.textDivs;
-      var textDivsLength = textDivs.length;
-      var canvas = document.createElement('canvas');
-      var ctx = canvas.getContext('2d', {alpha: false});
-
-      // No point in rendering many divs as it would make the browser
-      // unusable even after the divs are rendered.
-      if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
-        this._finishRendering();
-        return;
-      }
-
-      var lastFontSize;
-      var lastFontFamily;
-      for (var i = 0; i < textDivsLength; i++) {
-        var textDiv = textDivs[i];
-        if (textDiv.dataset.isWhitespace !== undefined) {
-          continue;
-        }
-
-        var fontSize = textDiv.style.fontSize;
-        var fontFamily = textDiv.style.fontFamily;
-
-        // Only build font string and set to context if different from last.
-        if (fontSize !== lastFontSize || fontFamily !== lastFontFamily) {
-          ctx.font = fontSize + ' ' + fontFamily;
-          lastFontSize = fontSize;
-          lastFontFamily = fontFamily;
-        }
-
-        var width = ctx.measureText(textDiv.textContent).width;
-        if (width > 0) {
-          textLayerFrag.appendChild(textDiv);
-          var transform;
-          if (textDiv.dataset.canvasWidth !== undefined) {
-            // Dataset values come of type string.
-            var textScale = textDiv.dataset.canvasWidth / width;
-            transform = 'scaleX(' + textScale + ')';
-          } else {
-            transform = '';
-          }
-          var rotation = textDiv.dataset.angle;
-          if (rotation) {
-            transform = 'rotate(' + rotation + 'deg) ' + transform;
-          }
-          if (transform) {
-            CustomStyle.setProp('transform' , textDiv, transform);
-          }
-        }
-      }
-
-      this.textLayerDiv.appendChild(textLayerFrag);
-      this._finishRendering();
-      this.updateMatches();
-    },
-
     /**
      * Renders the text layer.
      * @param {number} timeout (optional) if specified, the rendering waits
@@ -1610,87 +1496,35 @@ var TextLayerBuilder = (function TextLayerBuilderClosure() {
         return;
       }
 
-      if (this.renderTimer) {
-        clearTimeout(this.renderTimer);
-        this.renderTimer = null;
-      }
-
-      if (!timeout) { // Render right away
-        this.renderLayer();
-      } else { // Schedule
-        var self = this;
-        this.renderTimer = setTimeout(function() {
-          self.renderLayer();
-          self.renderTimer = null;
-        }, timeout);
+      if (this.textLayerRenderTask) {
+        this.textLayerRenderTask.cancel();
+        this.textLayerRenderTask = null;
       }
-    },
 
-    appendText: function TextLayerBuilder_appendText(geom, styles) {
-      var style = styles[geom.fontName];
-      var textDiv = document.createElement('div');
-      this.textDivs.push(textDiv);
-      if (isAllWhitespace(geom.str)) {
-        textDiv.dataset.isWhitespace = true;
-        return;
-      }
-      var tx = PDFJS.Util.transform(this.viewport.transform, geom.transform);
-      var angle = Math.atan2(tx[1], tx[0]);
-      if (style.vertical) {
-        angle += Math.PI / 2;
-      }
-      var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
-      var fontAscent = fontHeight;
-      if (style.ascent) {
-        fontAscent = style.ascent * fontAscent;
-      } else if (style.descent) {
-        fontAscent = (1 + style.descent) * fontAscent;
-      }
-
-      var left;
-      var top;
-      if (angle === 0) {
-        left = tx[4];
-        top = tx[5] - fontAscent;
-      } else {
-        left = tx[4] + (fontAscent * Math.sin(angle));
-        top = tx[5] - (fontAscent * Math.cos(angle));
-      }
-      textDiv.style.left = left + 'px';
-      textDiv.style.top = top + 'px';
-      textDiv.style.fontSize = fontHeight + 'px';
-      textDiv.style.fontFamily = style.fontFamily;
-
-      textDiv.textContent = geom.str;
-      // |fontName| is only used by the Font Inspector. This test will succeed
-      // when e.g. the Font Inspector is off but the Stepper is on, but it's
-      // not worth the effort to do a more accurate test.
-      if (PDFJS.pdfBug) {
-        textDiv.dataset.fontName = geom.fontName;
-      }
-      // Storing into dataset will convert number into string.
-      if (angle !== 0) {
-        textDiv.dataset.angle = angle * (180 / Math.PI);
-      }
-      // We don't bother scaling single-char text divs, because it has very
-      // little effect on text highlighting. This makes scrolling on docs with
-      // lots of such divs a lot faster.
-      if (geom.str.length > 1) {
-        if (style.vertical) {
-          textDiv.dataset.canvasWidth = geom.height * this.viewport.scale;
-        } else {
-          textDiv.dataset.canvasWidth = geom.width * this.viewport.scale;
-        }
-      }
+      this.textDivs = [];
+      var textLayerFrag = document.createDocumentFragment();
+      this.textLayerRenderTask = PDFJS.renderTextLayer({
+        textContent: this.textContent,
+        container: textLayerFrag,
+        viewport: this.viewport,
+        textDivs: this.textDivs,
+        timeout: timeout
+      });
+      this.textLayerRenderTask.promise.then(function () {
+        this.textLayerDiv.appendChild(textLayerFrag);
+        this._finishRendering();
+        this.updateMatches();
+      }.bind(this), function (reason) {
+        // canceled or failed to render text layer -- skipping errors
+      });
     },
 
     setTextContent: function TextLayerBuilder_setTextContent(textContent) {
-      this.textContent = textContent;
-
-      var textItems = textContent.items;
-      for (var i = 0, len = textItems.length; i < len; i++) {
-        this.appendText(textItems[i], textContent.styles);
+      if (this.textLayerRenderTask) {
+        this.textLayerRenderTask.cancel();
+        this.textLayerRenderTask = null;
       }
+      this.textContent = textContent;
       this.divContentDone = true;
     },
 
@@ -1942,6 +1776,8 @@ DefaultTextLayerFactory.prototype = {
  * @class
  */
 var AnnotationsLayerBuilder = (function AnnotationsLayerBuilderClosure() {
+  var CustomStyle = PDFJS.CustomStyle;
+
   /**
    * @param {AnnotationsLayerBuilderOptions} options
    * @constructs AnnotationsLayerBuilder