Merge branch 'master' of github.com:andreasgal/pdf.js

fonts.js

@@ -64,7 +64,7 @@ var Fonts = {
       var unicode = encoding[charcode];
 
       // Check if the glyph has already been converted
-      if (unicode instanceof Name)
+      if (!IsNum(unicode))
           unicode = encoding[unicode] = GlyphsUnicode[unicode.name];
 
       // Handle surrogate pairs
@@ -165,6 +165,7 @@ var Font = (function () {
         warn("Font " + properties.type + " is not supported");
         break;
     }
+    this.data = data;
 
     Fonts[name] = {
       data: data,
@@ -779,9 +780,18 @@ var Font = (function () {
       });
     },
 
-    bindDOM: function font_bindDom(data) {
+    bindDOM: function font_bindDom(data, callback) {
       var fontName = this.name;
 
+      // Just adding the font-face to the DOM doesn't make it load. It
+      // seems it's loaded once Gecko notices it's used. Therefore,
+      // add a div on the page using the loaded font.
+      var div = document.createElement("div");
+      var style = 'font-family:"' + name + 
+        '";position: absolute;top:-99999;left:-99999;z-index:-99999';
+      div.setAttribute("style", style);
+      document.body.appendChild(div);
+
       /** Hack begin */
       // Actually there is not event when a font has finished downloading so
       // the following code are a dirty hack to 'guess' when a font is ready
@@ -801,15 +811,19 @@ var Font = (function () {
 
         // For some reasons the font has not loaded, so mark it loaded for the
         // page to proceed but cry
-        if ((Date.now() - this.start) >= kMaxWaitForFontFace) {
+        if (textWidth == ctx.measureText(testString).width) {
-          window.clearInterval(interval);
+          if ((Date.now() - this.start) < kMaxWaitForFontFace) {
-          Fonts[fontName].loading = false;
+            return;
+          } else {
             warn("Is " + fontName + " loaded?");
-          this.start = 0;
+          }
-        } else if (textWidth != ctx.measureText(testString).width) {
+        }
+        
         window.clearInterval(interval);
         Fonts[fontName].loading = false;
         this.start = 0;
+        if (callback) {
+          callback();
         }
       }, 30, this);
 

pdf.js

@@ -816,7 +816,7 @@ var DecryptStream = (function() {
         DecodeStream.call(this);
     }
 
-    const chunkSize = 512;
+    var chunkSize = 512;
 
     constructor.prototype = Object.create(DecodeStream.prototype);
     constructor.prototype.readBlock = function() {
@@ -910,18 +910,18 @@ var Ascii85Stream = (function() {
 
 var CCITTFaxStream = (function() {
 
-    const ccittEOL = -2;
+    var ccittEOL = -2;
-    const twoDimPass = 0;
+    var twoDimPass = 0;
-    const twoDimHoriz = 1;
+    var twoDimHoriz = 1;
-    const twoDimVert0 = 2;
+    var twoDimVert0 = 2;
-    const twoDimVertR1 = 3;
+    var twoDimVertR1 = 3;
-    const twoDimVertL1 = 4;
+    var twoDimVertL1 = 4;
-    const twoDimVertR2 = 5;
+    var twoDimVertR2 = 5;
-    const twoDimVertL2 = 6;
+    var twoDimVertL2 = 6;
-    const twoDimVertR3 = 7;
+    var twoDimVertR3 = 7;
-    const twoDimVertL3 = 8;
+    var twoDimVertL3 = 8;
 
-    const twoDimTable = [
+    var twoDimTable = [
     [-1, -1], [-1, -1],               // 000000x
     [7, twoDimVertL3],                // 0000010
     [7, twoDimVertR3],                // 0000011
@@ -989,7 +989,7 @@ var CCITTFaxStream = (function() {
     [1, twoDimVert0], [1, twoDimVert0]
     ];
 
-    const whiteTable1 = [
+    var whiteTable1 = [
         [-1, -1],                 // 00000
         [12, ccittEOL],               // 00001
         [-1, -1], [-1, -1],               // 0001x
@@ -1011,7 +1011,7 @@ var CCITTFaxStream = (function() {
         [12, 2560]                    // 11111
     ];
 
-    const whiteTable2 = [
+    var whiteTable2 = [
         [-1, -1], [-1, -1], [-1, -1], [-1, -1],   // 0000000xx
         [8, 29], [8, 29],             // 00000010x
         [8, 30], [8, 30],             // 00000011x
@@ -1175,7 +1175,7 @@ var CCITTFaxStream = (function() {
         [4, 7], [4, 7], [4, 7], [4, 7]
     ];
     
-    const blackTable1 = [
+    var blackTable1 = [
         [-1, -1], [-1, -1],                   // 000000000000x
         [12, ccittEOL], [12, ccittEOL],           // 000000000001x
         [-1, -1], [-1, -1], [-1, -1], [-1, -1],       // 00000000001xx
@@ -1236,7 +1236,7 @@ var CCITTFaxStream = (function() {
         [10, 64], [10, 64], [10, 64], [10, 64]
     ];
 
-    const blackTable2 = [
+    var blackTable2 = [
         [8, 13], [8, 13], [8, 13], [8, 13],           // 00000100xxxx
         [8, 13], [8, 13], [8, 13], [8, 13],
         [8, 13], [8, 13], [8, 13], [8, 13],
@@ -1315,7 +1315,7 @@ var CCITTFaxStream = (function() {
         [7, 12], [7, 12], [7, 12], [7, 12]    
     ];
 
-    const blackTable3 = [
+    var blackTable3 = [
         [-1, -1], [-1, -1], [-1, -1], [-1, -1],       // 0000xx
         [6, 9],                       // 000100
         [6, 8],                       // 000101
@@ -3819,6 +3819,9 @@ var CanvasGraphics = (function() {
 
             this.current.fontSize = size;
             this.ctx.font = this.current.fontSize +'px "' + fontName + '", Symbol';
+            if (this.ctx.$setFont) {
+              this.ctx.$setFont(fontName);
+            }
         },
         setTextRenderingMode: function(mode) {
             TODO("text rendering mode");

viewer_worker.html

@@ -1,7 +1,10 @@
 <html>
     <head>
         <title>Simple pdf.js page worker viewer</title>
-        <script type="text/javascript" src="worker_client.js"></script>
+        <script type="text/javascript" src="fonts.js"></script>
+        <script type="text/javascript" src="glyphlist.js"></script>
+        <script type="text/javascript" src="pdf.js"></script>
+        <script type="text/javascript" src="worker/client.js"></script>
 <script>
 
 

worker/canvas.js

@@ -119,7 +119,8 @@ function CanvasProxy(width, height) {
   "$addCurrentX",
   "$saveCurrentX",
   "$restoreCurrentX",
-  "$showText"
+  "$showText",
+  "$setFont"
   ];
 
   function buildFuncCall(name) {

worker/client.js

@@ -18,12 +18,124 @@ if (typeof console.time == "undefined") {
   };
 }
 
+function FontWorker() {
+  this.worker = new Worker("worker/font.js");
+  this.fontsWaiting = 0;
+  this.fontsWaitingCallbacks = [];
+
+  // Listen to the WebWorker for data and call actionHandler on it.
+  this.worker.onmessage = function(event) {
+    var data = event.data;
+    var actionHandler = this.actionHandler
+    if (data.action in actionHandler) {
+      actionHandler[data.action].call(this, data.data);
+    } else {
+      throw "Unkown action from worker: " + data.action;
+    }
+  }.bind(this);
+  
+  this.$handleFontLoadedCallback = this.handleFontLoadedCallback.bind(this);
+}
+
+FontWorker.prototype = {
+  handleFontLoadedCallback: function() {
+    // Decrease the number of fonts wainting to be loaded.
+    this.fontsWaiting--;
+    // If all fonts are available now, then call all the callbacks.
+    if (this.fontsWaiting == 0) {
+      var callbacks = this.fontsWaitingCallbacks;
+      for (var i = 0; i < callbacks.length; i++) {
+        callbacks[i]();
+      }
+      this.fontsWaitingCallbacks.length = 0;
+    }
+  },
+  
+  actionHandler: {
+    "log": function(data) {
+      console.log.apply(console, data);
+    },
+    
+    "fonts": function(data) {
+      // console.log("got processed fonts from worker", Object.keys(data));
+      for (name in data) {
+        // Update the 
+        Fonts[name].properties = {
+          encoding: data[name].encoding
+        }
+        
+        // Call `Font.prototype.bindDOM` to make the font get loaded on the page.
+        Font.prototype.bindDOM.call(
+          Fonts[name],
+          data[name].str,
+          // IsLoadedCallback.
+          this.$handleFontLoadedCallback
+        );
+      }
+    }
+  },
+
+  ensureFonts: function(data, callback) {
+    var font;
+    var notLoaded = [];
+    for (var i = 0; i < data.length; i++) {
+      font = data[i];
+      if (Fonts[font.name]) {
+        continue;
+      }
+    
+      // Store only the data on Fonts that is needed later on, such that we
+      // hold track on as lease memory as possible.
+      Fonts[font.name] = {
+        name:       font.name,
+        mimetype:   font.mimetype,
+        // This is set later on the worker replay. For some fonts, the encoding
+        // is calculated during the conversion process happening on the worker
+        // and therefore is not available right now.
+        // properties: {
+        //   encoding:  font.properties.encoding
+        // },
+        cache:      Object.create(null)
+      };
+
+      // Mark this font to be handled later.
+      notLoaded.push(font);
+      // Increate the number of fonts to wait for.
+      this.fontsWaiting++;
+    }
+    
+    console.time("ensureFonts");
+    // If there are fonts, that need to get loaded, tell the FontWorker to get
+    // started and push the callback on the waiting-callback-stack.
+    if (notLoaded.length != 0) {
+      console.log("fonts -> FontWorker");
+      // Send the worker the fonts to work on.
+      this.worker.postMessage({
+        action: "fonts",
+        data:   notLoaded
+      });
+      if (callback) {
+        this.fontsWaitingCallbacks.push(callback);
+      }
+    }
+    // All fonts are present? Well, then just call the callback if there is one.
+    else {
+      if (callback) {
+        callback();
+      }
+    }
+  },
+}
+
 function WorkerPDFDoc(canvas) {
   var timer = null
 
   this.ctx = canvas.getContext("2d");
   this.canvas = canvas;
-  this.worker = new Worker('pdf_worker.js');
+  this.worker = new Worker('worker/pdf.js');
+  this.fontWorker = new FontWorker();
+  this.waitingForFonts = false;
+  this.waitingForFontsCallback = [];
 
   this.numPage = 1;
   this.numPages = null;
@@ -56,6 +168,7 @@ function WorkerPDFDoc(canvas) {
     },
 
     "$showText": function(y, text) {
+      text = Fonts.charsToUnicode(text);
       this.translate(currentX, -1 * y);
       this.fillText(text, 0, 0);
       currentX += this.measureText(text).width;
@@ -136,6 +249,10 @@ function WorkerPDFDoc(canvas) {
         throw "Pattern not found";
       }
       this.strokeStyle = pattern;
+    },
+    
+    "$setFont": function(name) {
+      Fonts.active = name;
     }
   }
 
@@ -188,6 +305,18 @@ function WorkerPDFDoc(canvas) {
       document.body.appendChild(div);
     },
     
+    "fonts": function(data) {
+      this.waitingForFonts = true;
+      this.fontWorker.ensureFonts(data, function() {
+        this.waitingForFonts = false;
+        var callbacks = this.waitingForFontsCallback;
+        for (var i = 0; i < callbacks.length; i++) {
+          callbacks[i]();
+        }
+        this.waitingForFontsCallback.length = 0;
+      }.bind(this));
+    },
+
     "jpeg_stream": function(data) {
       var img = new Image();
       img.src = "data:image/jpeg;base64," + window.btoa(data.raw);
@@ -207,11 +336,9 @@ function WorkerPDFDoc(canvas) {
           canvasList[id] = newCanvas;
         }
 
-        // There might be fonts that need to get loaded. Shedule the
+        var renderData = function() {
-        // rendering at the end of the event queue ensures this.
-        setTimeout(function() {
           if (id == 0) {
-            console.time("canvas rendering");
+            console.time("main canvas rendering");
             var ctx = this.ctx;
             ctx.save();
             ctx.fillStyle = "rgb(255, 255, 255)";
@@ -219,12 +346,27 @@ function WorkerPDFDoc(canvas) {
             ctx.restore();
           }
           renderProxyCanvas(canvasList[id], cmdQueue);
-          if (id == 0) console.timeEnd("canvas rendering")
+          if (id == 0) {
-        }, 0, this);
+            console.timeEnd("main canvas rendering");
+            console.timeEnd(">>> total page display time:");
+          }
+        }.bind(this);
+
+        if (this.waitingForFonts) {
+          if (id == 0) {
+            console.log("want to render, but not all fonts are there", id);
+            this.waitingForFontsCallback.push(renderData);
+          } else {
+            // console.log("assume canvas doesn't have fonts", id);
+            renderData();
+          }
+        } else {
+          renderData();
+        }
     }
   }
 
-  // List to the WebWorker for data and call actionHandler on it.
+  // Listen to the WebWorker for data and call actionHandler on it.
   this.worker.onmessage = function(event) {
     var data = event.data;
     if (data.action in actionHandler) {
@@ -232,7 +374,7 @@ function WorkerPDFDoc(canvas) {
     } else {
       throw "Unkown action from worker: " + data.action;
     }
-  }
+  }.bind(this)
 }
 
 WorkerPDFDoc.prototype.open = function(url, callback) {
@@ -255,6 +397,8 @@ WorkerPDFDoc.prototype.open = function(url, callback) {
 
 WorkerPDFDoc.prototype.showPage = function(numPage) {
   this.numPage = parseInt(numPage);
+  console.log("=== start rendering page " + numPage + " ===");
+  console.time(">>> total page display time:");
   this.worker.postMessage(numPage);
   if (this.onChangePage) {
     this.onChangePage(numPage);

worker/console.js

@@ -0,0 +1,27 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+"use strict";
+
+var consoleTimer = {};
+var console = {
+  log: function log() {
+    var args = Array.prototype.slice.call(arguments);
+    postMessage({
+      action: "log",
+      data: args
+    });
+  },
+  
+  time: function(name) {
+    consoleTimer[name] = Date.now();
+  },
+  
+  timeEnd: function(name) {
+    var time = consoleTimer[name];
+    if (time == null) {
+      throw "Unkown timer name " + name;
+    }
+    this.log("Timer:", name, Date.now() - time);
+  }
+}

worker/font.js

@@ -0,0 +1,65 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+"use strict";
+
+importScripts("console.js");
+
+importScripts("../pdf.js");
+importScripts("../fonts.js");
+importScripts("../glyphlist.js")
+
+function fontDataToString(font) {
+  // Doing postMessage on objects make them lose their "shape". This adds the
+  // "shape" for all required objects agains, such that the encoding works as
+  // expected.
+  var fontFileDict = new Dict();
+  fontFileDict.map = font.file.dict.map;
+
+  var fontFile = new Stream(font.file.bytes, font.file.start, font.file.end - font.file.start, fontFileDict);
+  font.file = new FlateStream(fontFile);
+  
+  // This will encode the font.
+  var fontObj = new Font(font.name, font.file, font.properties);
+
+  // Create string that is used for css later.
+  var str = "";
+  var data = fontObj.data;
+  var length = data.length;
+  for (var j = 0; j < length; j++)
+    str += String.fromCharCode(data[j]);
+  
+  return {
+    str:      str,
+    encoding: font.properties.encoding
+  }
+}
+
+/**
+* Functions to handle data sent by the MainThread.
+*/
+var actionHandler = {
+  "fonts": function(data) {
+    var fontData;
+    var result = {};
+    for (var i = 0; i < data.length; i++) {
+      fontData = data[i];
+      result[fontData.name] = fontDataToString(fontData);
+    }
+    
+    postMessage({
+      action: "fonts",
+      data:   result
+    })
+  },
+}
+
+// Listen to the MainThread for data and call actionHandler on it.
+this.onmessage = function(event) {
+  var data = event.data;
+  if (data.action in actionHandler) {
+    actionHandler[data.action].call(this, data.data);
+  } else {
+    throw "Unkown action from worker: " + data.action;
+  }
+}

worker/pdf.js

@@ -27,10 +27,11 @@ var console = {
 }
 
 //
-importScripts("canvas_proxy.js");
+importScripts("console.js")
-importScripts("pdf.js");
+importScripts("canvas.js");
-importScripts("fonts.js");
+importScripts("../pdf.js");
-importScripts("glyphlist.js")
+importScripts("../fonts.js");
+importScripts("../glyphlist.js")
 
 // Use the JpegStreamProxy proxy.
 JpegStream = JpegStreamProxy;
@@ -65,19 +66,12 @@ onmessage = function(event) {
     page.compile(gfx, fonts);
     console.timeEnd("compile");
 
+    // Send fonts to the main thread.
     console.time("fonts");
-    // Inspect fonts and translate the missing one.
+    postMessage({
-    var count = fonts.length;
+      action: "fonts",
-    for (var i = 0; i < count; i++) {
+      data:   fonts
-      var font = fonts[i];
+    });
-      if (Fonts[font.name]) {
-        fontsReady = fontsReady && !Fonts[font.name].loading;
-        continue;
-      }
-
-      // This "builds" the font and sents it over to the main thread.
-      new Font(font.name, font.file, font.properties);
-    }
     console.timeEnd("fonts");
     
     console.time("display");