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

Conflicts:
	pdf.js

.gitignore

@@ -3,3 +3,5 @@ pdf.pdf
 intelisa.pdf
 openweb_tm-PRINT.pdf
 local.mk
+build/
+

Makefile

@@ -1,36 +1,39 @@
 REPO = git@github.com:andreasgal/pdf.js.git
 BUILD_DIR := build
+BUILD_TARGET := $(BUILD_DIR)/pdf.js
 DEFAULT_BROWSERS := resources/browser_manifests/browser_manifest.json
 DEFAULT_TESTS := test_manifest.json
 
 EXTENSION_SRC := ./extensions/firefox
 EXTENSION_NAME := pdf.js.xpi
 
+all: bundle
+
 # Let folks define custom rules for their clones.
 -include local.mk
 
 # JS files needed for pdf.js.
-# This list doesn't account for the 'worker' directory.
 PDF_JS_FILES = \
-	pdf.js \
+  core.js \
-	crypto.js \
+  util.js \
-	fonts.js \
+  canvas.js \
-	metrics.js \
+  obj.js \
+  function.js \
   charsets.js \
-	glyphlist.js \
   cidmaps.js \
+  colorspace.js \
+  crypto.js \
+  evaluator.js \
+  fonts.js \
+  glyphlist.js \
+  image.js \
+  metrics.js \
+  parser.js \
+  pattern.js \
+  stream.js \
+  worker.js \
 	$(NULL)
 
-PDF_WORKER_FILES = \
-	worker/console.js \
-	worker/message_handler.js \
-	worker/pdf_worker_loader.js \
-	worker/processor_handler.js \
-	$(NULL)	
-
-# not sure what to do for all yet
-all: help
-
 # make server
 #
 # This target starts a local web server at localhost:8888. This can be
@@ -40,6 +43,28 @@ server:
 
 test: shell-test browser-test
 
+#
+# Create production output (pdf.js, and corresponding changes to web files)
+#
+production: | bundle
+	@echo "Preparing web/viewer-production.html"; \
+	cd web; \
+	sed '/PDFJSSCRIPT_REMOVE/d' viewer.html > viewer-1.tmp; \
+	sed '/PDFJSSCRIPT_INCLUDE_BUILD/ r viewer-snippet.html' viewer-1.tmp > viewer-production.html; \
+	rm -f *.tmp; \
+	cd ..
+
+#
+# Bundle pdf.js
+#
+bundle: | $(BUILD_DIR)
+	@echo "Bundling source files into $(BUILD_TARGET)"
+	@cd src; \
+	cat $(PDF_JS_FILES) > all_files.tmp; \
+	sed '/PDFJSSCRIPT_INCLUDE_ALL/ r all_files.tmp' pdf.js > ../$(BUILD_TARGET); \
+	rm -f *.tmp; \
+	cd ..
+
 # make browser-test
 #
 # This target runs in-browser tests using two primary arguments: a
@@ -99,11 +124,11 @@ browser-test:
 # To install gjslint, see:
 #
 # <http://code.google.com/closure/utilities/docs/linter_howto.html>
-SRC_DIRS := . utils worker web test examples/helloworld extensions/firefox \
+SRC_DIRS := . src utils web test examples/helloworld extensions/firefox \
             extensions/firefox/components
 GJSLINT_FILES = $(foreach DIR,$(SRC_DIRS),$(wildcard $(DIR)/*.js))
 lint:
-	gjslint $(GJSLINT_FILES)
+	gjslint --nojsdoc $(GJSLINT_FILES)
 
 # make web
 #
@@ -114,14 +139,14 @@ lint:
 # TODO: Use the Closure compiler to optimize the pdf.js files.
 #
 GH_PAGES = $(BUILD_DIR)/gh-pages
-web: | extension compiler pages-repo \
+web: | production extension compiler pages-repo \
-	$(addprefix $(GH_PAGES)/, $(PDF_JS_FILES)) \
+	$(addprefix $(GH_PAGES)/, $(BUILD_TARGET)) \
-	$(addprefix $(GH_PAGES)/, $(PDF_WORKER_FILES)) \
 	$(addprefix $(GH_PAGES)/, $(wildcard web/*.*)) \
 	$(addprefix $(GH_PAGES)/, $(wildcard web/images/*.*)) \
 	$(addprefix $(GH_PAGES)/, $(wildcard $(EXTENSION_SRC)/*.xpi))
 
 	@cp $(GH_PAGES)/web/index.html.template $(GH_PAGES)/index.html;
+	@mv -f $(GH_PAGES)/web/viewer-production.html $(GH_PAGES)/web/viewer.html;
 	@cd $(GH_PAGES); git add -A;
 	@echo
 	@echo "Website built in $(GH_PAGES)."
@@ -139,15 +164,12 @@ pages-repo: | $(BUILD_DIR)
 	git clone -b gh-pages $(REPO) $(GH_PAGES); \
 	rm -rf $(GH_PAGES)/*; \
 	fi;
-	@mkdir -p $(GH_PAGES)/worker;
 	@mkdir -p $(GH_PAGES)/web;
 	@mkdir -p $(GH_PAGES)/web/images;
+	@mkdir -p $(GH_PAGES)/build;
 	@mkdir -p $(GH_PAGES)/$(EXTENSION_SRC);
 
-$(GH_PAGES)/%.js: %.js
+$(GH_PAGES)/$(BUILD_DIR)/%.js: build/%.js
-	@cp $< $@
-
-$(GH_PAGES)/worker/%: worker/%
 	@cp $< $@
 
 $(GH_PAGES)/web/%: web/%
@@ -182,16 +204,16 @@ PDF_WEB_FILES = \
 	web/compatibility.js \
 	web/viewer.css \
 	web/viewer.js \
-	web/viewer.html \
+	web/viewer-production.html \
 	$(NULL)
-extension:
+extension: | production
 	# Copy a standalone version of pdf.js inside the content directory
 	@rm -Rf $(EXTENSION_SRC)/$(CONTENT_DIR)/
+	@mkdir -p $(EXTENSION_SRC)/$(CONTENT_DIR)/$(BUILD_DIR)
 	@mkdir -p $(EXTENSION_SRC)/$(CONTENT_DIR)/web
-	@mkdir -p $(EXTENSION_SRC)/$(CONTENT_DIR)/worker
+	@cp $(BUILD_TARGET) $(EXTENSION_SRC)/$(CONTENT_DIR)/$(BUILD_DIR)
-	@cp $(PDF_JS_FILES) $(EXTENSION_SRC)/$(CONTENT_DIR)/ 
 	@cp -r $(PDF_WEB_FILES) $(EXTENSION_SRC)/$(CONTENT_DIR)/web/
-	@cp -r $(PDF_WORKER_FILES) $(EXTENSION_SRC)/$(CONTENT_DIR)/worker/
+	@mv -f $(EXTENSION_SRC)/$(CONTENT_DIR)/web/viewer-production.html $(EXTENSION_SRC)/$(CONTENT_DIR)/web/viewer.html
 
 	# Create the xpi
 	@cd $(EXTENSION_SRC); zip -r $(EXTENSION_NAME) *
@@ -211,5 +233,5 @@ clean:
 help:
 	@echo "Read the comments in the Makefile for guidance.";
 
-.PHONY:: all test browser-test font-test shell-test \
+.PHONY:: production test browser-test font-test shell-test \
 	shell-msg lint clean web compiler help server

README.md

@@ -55,18 +55,20 @@ You can also view all the test pdf files on the right side serving
 
 + http://localhost:8888/test/pdfs/?frame
 
+### Building pdf.js
+
+In order to bundle all `src/` files into a final `pdf.js`, issue:
+
+    $ make
+
+This will generate the file `build/pdf.js` that can be included in your final project. (WARNING: That's a large file! Consider minifying it).
+
+
 ## Learning
 
 Here are some initial pointers to help contributors get off the ground. 
 Additional resources are available in a separate section below.
 
-#### Introductory video
-
-Check out the presentation by our contributor Julian Viereck on the inner 
-workings of PDF and pdf.js:
-
-+ http://www.youtube.com/watch?v=Iv15UY-4Fg8
-
 #### Hello world
 
 For a "hello world" example, take a look at:
@@ -76,6 +78,14 @@ For a "hello world" example, take a look at:
 This example illustrates the bare minimum ingredients for integrating pdf.js
 in a custom project.
 
+#### Introductory video
+
+Check out the presentation by our contributor Julian Viereck on the inner 
+workings of PDF and pdf.js:
+
++ http://www.youtube.com/watch?v=Iv15UY-4Fg8
+
+
 
 
 ## Contributing

examples/helloworld/hello.js

@@ -7,11 +7,11 @@
 
 'use strict';
 
-getPdf('helloworld.pdf', function getPdfHelloWorld(data) {
+PDFJS.getPdf('helloworld.pdf', function getPdfHelloWorld(data) {
   //
   // Instantiate PDFDoc with PDF data
   //
-  var pdf = new PDFDoc(data);
+  var pdf = new PDFJS.PDFDoc(data);
   var page = pdf.getPage(1);
   var scale = 1.5;
 

examples/helloworld/index.html

@@ -2,13 +2,25 @@
 <html>
 
 <head>
-  <!-- PDF.js-specific -->
+  <!-- In production, only one script (pdf.js) is necessary -->
-  <script type="text/javascript" src="../../pdf.js"></script>
+  <script type="text/javascript" src="../../src/core.js"></script> 
-  <script type="text/javascript" src="../../metrics.js"></script>
+  <script type="text/javascript" src="../../src/util.js"></script>  
-  <script type="text/javascript" src="../../fonts.js"></script>
+  <script type="text/javascript" src="../../src/canvas.js"></script>  
-  <script type="text/javascript" src="../../glyphlist.js"></script>
+  <script type="text/javascript" src="../../src/obj.js"></script>  
-  <script type="text/javascript" src="../../worker/message_handler.js"></script>
+  <script type="text/javascript" src="../../src/function.js"></script> 
-  <script type="text/javascript" src="../../worker/processor_handler.js"></script>
+  <script type="text/javascript" src="../../src/charsets.js"></script>  
+  <script type="text/javascript" src="../../src/cidmaps.js"></script>  
+  <script type="text/javascript" src="../../src/colorspace.js"></script>  
+  <script type="text/javascript" src="../../src/crypto.js"></script>  
+  <script type="text/javascript" src="../../src/evaluator.js"></script>  
+  <script type="text/javascript" src="../../src/fonts.js"></script>  
+  <script type="text/javascript" src="../../src/glyphlist.js"></script>  
+  <script type="text/javascript" src="../../src/image.js"></script>  
+  <script type="text/javascript" src="../../src/metrics.js"></script>  
+  <script type="text/javascript" src="../../src/parser.js"></script>  
+  <script type="text/javascript" src="../../src/pattern.js"></script>  
+  <script type="text/javascript" src="../../src/stream.js"></script>  
+  <script type="text/javascript" src="../../src/worker.js"></script>  
 
   <script type="text/javascript" src="hello.js"></script>
 </head>  

extensions/firefox/.gitignore

@@ -0,0 +1 @@
+content/

src/canvas.js

@@ -0,0 +1,848 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'use strict';
+
+// <canvas> contexts store most of the state we need natively.
+// However, PDF needs a bit more state, which we store here.
+
+var CanvasExtraState = (function canvasExtraState() {
+  function constructor(old) {
+    // Are soft masks and alpha values shapes or opacities?
+    this.alphaIsShape = false;
+    this.fontSize = 0;
+    this.textMatrix = IDENTITY_MATRIX;
+    this.leading = 0;
+    // Current point (in user coordinates)
+    this.x = 0;
+    this.y = 0;
+    // Start of text line (in text coordinates)
+    this.lineX = 0;
+    this.lineY = 0;
+    // Character and word spacing
+    this.charSpacing = 0;
+    this.wordSpacing = 0;
+    this.textHScale = 1;
+    // Color spaces
+    this.fillColorSpace = new DeviceGrayCS;
+    this.fillColorSpaceObj = null;
+    this.strokeColorSpace = new DeviceGrayCS;
+    this.strokeColorSpaceObj = null;
+    this.fillColorObj = null;
+    this.strokeColorObj = null;
+    // Default fore and background colors
+    this.fillColor = '#000000';
+    this.strokeColor = '#000000';
+
+    this.old = old;
+  }
+
+  constructor.prototype = {
+    clone: function canvasextra_clone() {
+      return Object.create(this);
+    },
+    setCurrentPoint: function canvasextra_setCurrentPoint(x, y) {
+      this.x = x;
+      this.y = y;
+    }
+  };
+  return constructor;
+})();
+
+function ScratchCanvas(width, height) {
+  var canvas = document.createElement('canvas');
+  canvas.width = width;
+  canvas.height = height;
+  return canvas;
+}
+
+var CanvasGraphics = (function canvasGraphics() {
+  // Defines the time the executeIRQueue is going to be executing
+  // before it stops and shedules a continue of execution.
+  var kExecutionTime = 50;
+
+  // Number of IR commands to execute before checking
+  // if we execute longer then `kExecutionTime`.
+  var kExecutionTimeCheck = 500;
+
+  function constructor(canvasCtx, objs) {
+    this.ctx = canvasCtx;
+    this.current = new CanvasExtraState();
+    this.stateStack = [];
+    this.pendingClip = null;
+    this.res = null;
+    this.xobjs = null;
+    this.ScratchCanvas = ScratchCanvas;
+    this.objs = objs;
+  }
+
+  var LINE_CAP_STYLES = ['butt', 'round', 'square'];
+  var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
+  var NORMAL_CLIP = {};
+  var EO_CLIP = {};
+
+  constructor.prototype = {
+    beginDrawing: function canvasGraphicsBeginDrawing(mediaBox) {
+      var cw = this.ctx.canvas.width, ch = this.ctx.canvas.height;
+      this.ctx.save();
+      switch (mediaBox.rotate) {
+        case 0:
+          this.ctx.transform(1, 0, 0, -1, 0, ch);
+          break;
+        case 90:
+          this.ctx.transform(0, 1, 1, 0, 0, 0);
+          break;
+        case 180:
+          this.ctx.transform(-1, 0, 0, 1, cw, 0);
+          break;
+        case 270:
+          this.ctx.transform(0, -1, -1, 0, cw, ch);
+          break;
+      }
+      this.ctx.scale(cw / mediaBox.width, ch / mediaBox.height);
+    },
+
+    executeIRQueue: function canvasGraphicsExecuteIRQueue(codeIR,
+                                  executionStartIdx, continueCallback) {
+      var argsArray = codeIR.argsArray;
+      var fnArray = codeIR.fnArray;
+      var i = executionStartIdx || 0;
+      var argsArrayLen = argsArray.length;
+
+      var executionEndIdx;
+      var startTime = Date.now();
+
+      var objs = this.objs;
+
+      do {
+        executionEndIdx = Math.min(argsArrayLen, i + kExecutionTimeCheck);
+
+        for (i; i < executionEndIdx; i++) {
+          if (fnArray[i] !== 'dependency') {
+            this[fnArray[i]].apply(this, argsArray[i]);
+          } else {
+            var deps = argsArray[i];
+            for (var n = 0; n < deps.length; n++) {
+              var depObjId = deps[n];
+
+              // If the promise isn't resolved yet, add the continueCallback
+              // to the promise and bail out.
+              if (!objs.isResolved(depObjId)) {
+                objs.get(depObjId, continueCallback);
+                return i;
+              }
+            }
+          }
+        }
+
+        // If the entire IRQueue was executed, stop as were done.
+        if (i == argsArrayLen) {
+          return i;
+        }
+
+        // If the execution took longer then a certain amount of time, shedule
+        // to continue exeution after a short delay.
+        // However, this is only possible if a 'continueCallback' is passed in.
+        if (continueCallback && (Date.now() - startTime) > kExecutionTime) {
+          setTimeout(continueCallback, 0);
+          return i;
+        }
+
+        // If the IRQueue isn't executed completly yet OR the execution time
+        // was short enough, do another execution round.
+      } while (true);
+    },
+
+    endDrawing: function canvasGraphicsEndDrawing() {
+      this.ctx.restore();
+    },
+
+    // Graphics state
+    setLineWidth: function canvasGraphicsSetLineWidth(width) {
+      this.ctx.lineWidth = width;
+    },
+    setLineCap: function canvasGraphicsSetLineCap(style) {
+      this.ctx.lineCap = LINE_CAP_STYLES[style];
+    },
+    setLineJoin: function canvasGraphicsSetLineJoin(style) {
+      this.ctx.lineJoin = LINE_JOIN_STYLES[style];
+    },
+    setMiterLimit: function canvasGraphicsSetMiterLimit(limit) {
+      this.ctx.miterLimit = limit;
+    },
+    setDash: function canvasGraphicsSetDash(dashArray, dashPhase) {
+      this.ctx.mozDash = dashArray;
+      this.ctx.mozDashOffset = dashPhase;
+    },
+    setRenderingIntent: function canvasGraphicsSetRenderingIntent(intent) {
+      TODO('set rendering intent: ' + intent);
+    },
+    setFlatness: function canvasGraphicsSetFlatness(flatness) {
+      TODO('set flatness: ' + flatness);
+    },
+    setGState: function canvasGraphicsSetGState(states) {
+      for (var i = 0; i < states.length; i++) {
+        var state = states[i];
+        var key = state[0];
+        var value = state[1];
+
+        switch (key) {
+          case 'LW':
+            this.setLineWidth(value);
+            break;
+          case 'LC':
+            this.setLineCap(value);
+            break;
+          case 'LJ':
+            this.setLineJoin(value);
+            break;
+          case 'ML':
+            this.setMiterLimit(value);
+            break;
+          case 'D':
+            this.setDash(value[0], value[1]);
+            break;
+          case 'RI':
+            this.setRenderingIntent(value);
+            break;
+          case 'FL':
+            this.setFlatness(value);
+            break;
+          case 'Font':
+            this.setFont(state[1], state[2]);
+            break;
+        }
+      }
+    },
+    save: function canvasGraphicsSave() {
+      this.ctx.save();
+      var old = this.current;
+      this.stateStack.push(old);
+      this.current = old.clone();
+    },
+    restore: function canvasGraphicsRestore() {
+      var prev = this.stateStack.pop();
+      if (prev) {
+        this.current = prev;
+        this.ctx.restore();
+      }
+    },
+    transform: function canvasGraphicsTransform(a, b, c, d, e, f) {
+      this.ctx.transform(a, b, c, d, e, f);
+    },
+
+    // Path
+    moveTo: function canvasGraphicsMoveTo(x, y) {
+      this.ctx.moveTo(x, y);
+      this.current.setCurrentPoint(x, y);
+    },
+    lineTo: function canvasGraphicsLineTo(x, y) {
+      this.ctx.lineTo(x, y);
+      this.current.setCurrentPoint(x, y);
+    },
+    curveTo: function canvasGraphicsCurveTo(x1, y1, x2, y2, x3, y3) {
+      this.ctx.bezierCurveTo(x1, y1, x2, y2, x3, y3);
+      this.current.setCurrentPoint(x3, y3);
+    },
+    curveTo2: function canvasGraphicsCurveTo2(x2, y2, x3, y3) {
+      var current = this.current;
+      this.ctx.bezierCurveTo(current.x, current.y, x2, y2, x3, y3);
+      current.setCurrentPoint(x3, y3);
+    },
+    curveTo3: function canvasGraphicsCurveTo3(x1, y1, x3, y3) {
+      this.curveTo(x1, y1, x3, y3, x3, y3);
+      this.current.setCurrentPoint(x3, y3);
+    },
+    closePath: function canvasGraphicsClosePath() {
+      this.ctx.closePath();
+    },
+    rectangle: function canvasGraphicsRectangle(x, y, width, height) {
+      this.ctx.rect(x, y, width, height);
+    },
+    stroke: function canvasGraphicsStroke() {
+      var ctx = this.ctx;
+      var strokeColor = this.current.strokeColor;
+      if (strokeColor && strokeColor.hasOwnProperty('type') &&
+          strokeColor.type === 'Pattern') {
+        // for patterns, we transform to pattern space, calculate
+        // the pattern, call stroke, and restore to user space
+        ctx.save();
+        ctx.strokeStyle = strokeColor.getPattern(ctx);
+        ctx.stroke();
+        ctx.restore();
+      } else {
+        ctx.stroke();
+      }
+
+      this.consumePath();
+    },
+    closeStroke: function canvasGraphicsCloseStroke() {
+      this.closePath();
+      this.stroke();
+    },
+    fill: function canvasGraphicsFill() {
+      var ctx = this.ctx;
+      var fillColor = this.current.fillColor;
+
+      if (fillColor && fillColor.hasOwnProperty('type') &&
+          fillColor.type === 'Pattern') {
+        ctx.save();
+        ctx.fillStyle = fillColor.getPattern(ctx);
+        ctx.fill();
+        ctx.restore();
+      } else {
+        ctx.fill();
+      }
+
+      this.consumePath();
+    },
+    eoFill: function canvasGraphicsEoFill() {
+      var savedFillRule = this.setEOFillRule();
+      this.fill();
+      this.restoreFillRule(savedFillRule);
+    },
+    fillStroke: function canvasGraphicsFillStroke() {
+      var ctx = this.ctx;
+
+      var fillColor = this.current.fillColor;
+      if (fillColor && fillColor.hasOwnProperty('type') &&
+          fillColor.type === 'Pattern') {
+        ctx.save();
+        ctx.fillStyle = fillColor.getPattern(ctx);
+        ctx.fill();
+        ctx.restore();
+      } else {
+        ctx.fill();
+      }
+
+      var strokeColor = this.current.strokeColor;
+      if (strokeColor && strokeColor.hasOwnProperty('type') &&
+          strokeColor.type === 'Pattern') {
+        ctx.save();
+        ctx.strokeStyle = strokeColor.getPattern(ctx);
+        ctx.stroke();
+        ctx.restore();
+      } else {
+        ctx.stroke();
+      }
+
+      this.consumePath();
+    },
+    eoFillStroke: function canvasGraphicsEoFillStroke() {
+      var savedFillRule = this.setEOFillRule();
+      this.fillStroke();
+      this.restoreFillRule(savedFillRule);
+    },
+    closeFillStroke: function canvasGraphicsCloseFillStroke() {
+      this.closePath();
+      this.fillStroke();
+    },
+    closeEOFillStroke: function canvasGraphicsCloseEOFillStroke() {
+      var savedFillRule = this.setEOFillRule();
+      this.closePath();
+      this.fillStroke();
+      this.restoreFillRule(savedFillRule);
+    },
+    endPath: function canvasGraphicsEndPath() {
+      this.consumePath();
+    },
+
+    // Clipping
+    clip: function canvasGraphicsClip() {
+      this.pendingClip = NORMAL_CLIP;
+    },
+    eoClip: function canvasGraphicsEoClip() {
+      this.pendingClip = EO_CLIP;
+    },
+
+    // Text
+    beginText: function canvasGraphicsBeginText() {
+      this.current.textMatrix = IDENTITY_MATRIX;
+      this.current.x = this.current.lineX = 0;
+      this.current.y = this.current.lineY = 0;
+    },
+    endText: function canvasGraphicsEndText() {
+    },
+    setCharSpacing: function canvasGraphicsSetCharSpacing(spacing) {
+      this.current.charSpacing = spacing;
+    },
+    setWordSpacing: function canvasGraphicsSetWordSpacing(spacing) {
+      this.current.wordSpacing = spacing;
+    },
+    setHScale: function canvasGraphicsSetHScale(scale) {
+      this.current.textHScale = scale / 100;
+    },
+    setLeading: function canvasGraphicsSetLeading(leading) {
+      this.current.leading = -leading;
+    },
+    setFont: function canvasGraphicsSetFont(fontRefName, size) {
+      var fontObj = this.objs.get(fontRefName).fontObj;
+
+      if (!fontObj) {
+        throw 'Can\'t find font for ' + fontRefName;
+      }
+
+      var name = fontObj.loadedName || 'sans-serif';
+
+      this.current.font = fontObj;
+      this.current.fontSize = size;
+
+      var name = fontObj.loadedName || 'sans-serif';
+      var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :
+                                 (fontObj.bold ? 'bold' : 'normal');
+
+      var italic = fontObj.italic ? 'italic' : 'normal';
+      var serif = fontObj.serif ? 'serif' : 'sans-serif';
+      var typeface = '"' + name + '", ' + serif;
+      var rule = italic + ' ' + bold + ' ' + size + 'px ' + typeface;
+      this.ctx.font = rule;
+    },
+    setTextRenderingMode: function canvasGraphicsSetTextRenderingMode(mode) {
+      TODO('text rendering mode: ' + mode);
+    },
+    setTextRise: function canvasGraphicsSetTextRise(rise) {
+      TODO('text rise: ' + rise);
+    },
+    moveText: function canvasGraphicsMoveText(x, y) {
+      this.current.x = this.current.lineX += x;
+      this.current.y = this.current.lineY += y;
+    },
+    setLeadingMoveText: function canvasGraphicsSetLeadingMoveText(x, y) {
+      this.setLeading(-y);
+      this.moveText(x, y);
+    },
+    setTextMatrix: function canvasGraphicsSetTextMatrix(a, b, c, d, e, f) {
+      this.current.textMatrix = [a, b, c, d, e, f];
+
+      this.current.x = this.current.lineX = 0;
+      this.current.y = this.current.lineY = 0;
+    },
+    nextLine: function canvasGraphicsNextLine() {
+      this.moveText(0, this.current.leading);
+    },
+    showText: function canvasGraphicsShowText(text) {
+      var ctx = this.ctx;
+      var current = this.current;
+      var font = current.font;
+      var glyphs = font.charsToGlyphs(text);
+      var fontSize = current.fontSize;
+      var charSpacing = current.charSpacing;
+      var wordSpacing = current.wordSpacing;
+      var textHScale = current.textHScale;
+      var glyphsLength = glyphs.length;
+      if (font.coded) {
+        ctx.save();
+        ctx.transform.apply(ctx, current.textMatrix);
+        ctx.translate(current.x, current.y);
+
+        var fontMatrix = font.fontMatrix || IDENTITY_MATRIX;
+        ctx.scale(1 / textHScale, 1);
+        for (var i = 0; i < glyphsLength; ++i) {
+
+          var glyph = glyphs[i];
+          if (glyph === null) {
+            // word break
+            this.ctx.translate(wordSpacing, 0);
+            continue;
+          }
+
+          this.save();
+          ctx.scale(fontSize, fontSize);
+          ctx.transform.apply(ctx, fontMatrix);
+          this.executeIRQueue(glyph.IRQueue);
+          this.restore();
+
+          var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
+          var width = transformed[0] * fontSize + charSpacing;
+
+          ctx.translate(width, 0);
+          current.x += width;
+
+        }
+        ctx.restore();
+      } else {
+        ctx.save();
+        ctx.transform.apply(ctx, current.textMatrix);
+        ctx.scale(1, -1);
+        ctx.translate(current.x, -1 * current.y);
+        ctx.transform.apply(ctx, font.fontMatrix || IDENTITY_MATRIX);
+
+        ctx.scale(1 / textHScale, 1);
+
+        var width = 0;
+        for (var i = 0; i < glyphsLength; ++i) {
+          var glyph = glyphs[i];
+          if (glyph === null) {
+            // word break
+            width += wordSpacing;
+            continue;
+          }
+
+          var unicode = glyph.unicode;
+          var char = (unicode >= 0x10000) ?
+            String.fromCharCode(0xD800 | ((unicode - 0x10000) >> 10),
+            0xDC00 | (unicode & 0x3FF)) : String.fromCharCode(unicode);
+
+          ctx.fillText(char, width, 0);
+          width += glyph.width * fontSize * 0.001 + charSpacing;
+        }
+        current.x += width;
+
+        ctx.restore();
+      }
+    },
+
+    showSpacedText: function canvasGraphicsShowSpacedText(arr) {
+      var ctx = this.ctx;
+      var current = this.current;
+      var fontSize = current.fontSize;
+      var textHScale = current.textHScale;
+      var arrLength = arr.length;
+      for (var i = 0; i < arrLength; ++i) {
+        var e = arr[i];
+        if (isNum(e)) {
+          current.x -= e * 0.001 * fontSize * textHScale;
+        } else if (isString(e)) {
+          this.showText(e);
+        } else {
+          malformed('TJ array element ' + e + ' is not string or num');
+        }
+      }
+    },
+    nextLineShowText: function canvasGraphicsNextLineShowText(text) {
+      this.nextLine();
+      this.showText(text);
+    },
+    nextLineSetSpacingShowText:
+      function canvasGraphicsNextLineSetSpacingShowText(wordSpacing,
+                                                        charSpacing,
+                                                        text) {
+      this.setWordSpacing(wordSpacing);
+      this.setCharSpacing(charSpacing);
+      this.nextLineShowText(text);
+    },
+
+    // Type3 fonts
+    setCharWidth: function canvasGraphicsSetCharWidth(xWidth, yWidth) {
+      // We can safely ignore this since the width should be the same
+      // as the width in the Widths array.
+    },
+    setCharWidthAndBounds: function canvasGraphicsSetCharWidthAndBounds(xWidth,
+                                                                        yWidth,
+                                                                        llx,
+                                                                        lly,
+                                                                        urx,
+                                                                        ury) {
+      // TODO According to the spec we're also suppose to ignore any operators
+      // that set color or include images while processing this type3 font.
+      this.rectangle(llx, lly, urx - llx, ury - lly);
+      this.clip();
+      this.endPath();
+    },
+
+    // Color
+    setStrokeColorSpace:
+    function canvasGraphicsSetStrokeColorSpacefunction(raw) {
+      this.current.strokeColorSpace = ColorSpace.fromIR(raw);
+    },
+    setFillColorSpace: function canvasGraphicsSetFillColorSpace(raw) {
+      this.current.fillColorSpace = ColorSpace.fromIR(raw);
+    },
+    setStrokeColor: function canvasGraphicsSetStrokeColor(/*...*/) {
+      var cs = this.current.strokeColorSpace;
+      var color = cs.getRgb(arguments);
+      this.setStrokeRGBColor.apply(this, color);
+    },
+    getColorN_IR_Pattern: function(IR, cs) {
+      if (IR[0] == 'TilingPattern') {
+        var args = IR[1];
+        var base = cs.base;
+        var color;
+        if (base) {
+          var baseComps = base.numComps;
+
+          color = [];
+          for (var i = 0; i < baseComps; ++i)
+            color.push(args[i]);
+
+          color = base.getRgb(color);
+        }
+        var pattern = new TilingPattern(IR, color, this.ctx, this.objs);
+      } else if (IR[0] == 'RadialAxial' || IR[0] == 'Dummy') {
+        var pattern = Pattern.shadingFromIR(this.ctx, IR);
+      } else {
+        throw 'Unkown IR type';
+      }
+      return pattern;
+    },
+    setStrokeColorN_IR: function canvasGraphicsSetStrokeColorN(/*...*/) {
+      var cs = this.current.strokeColorSpace;
+
+      if (cs.name == 'Pattern') {
+        this.current.strokeColor = this.getColorN_IR_Pattern(arguments, cs);
+      } else {
+        this.setStrokeColor.apply(this, arguments);
+      }
+    },
+    setFillColor: function canvasGraphicsSetFillColor(/*...*/) {
+      var cs = this.current.fillColorSpace;
+      var color = cs.getRgb(arguments);
+      this.setFillRGBColor.apply(this, color);
+    },
+    setFillColorN_IR: function canvasGraphicsSetFillColorN(/*...*/) {
+      var cs = this.current.fillColorSpace;
+
+      if (cs.name == 'Pattern') {
+        this.current.fillColor = this.getColorN_IR_Pattern(arguments, cs);
+      } else {
+        this.setFillColor.apply(this, arguments);
+      }
+    },
+    setStrokeGray: function canvasGraphicsSetStrokeGray(gray) {
+      this.setStrokeRGBColor(gray, gray, gray);
+    },
+    setFillGray: function canvasGraphicsSetFillGray(gray) {
+      this.setFillRGBColor(gray, gray, gray);
+    },
+    setStrokeRGBColor: function canvasGraphicsSetStrokeRGBColor(r, g, b) {
+      var color = Util.makeCssRgb(r, g, b);
+      this.ctx.strokeStyle = color;
+      this.current.strokeColor = color;
+    },
+    setFillRGBColor: function canvasGraphicsSetFillRGBColor(r, g, b) {
+      var color = Util.makeCssRgb(r, g, b);
+      this.ctx.fillStyle = color;
+      this.current.fillColor = color;
+    },
+    setStrokeCMYKColor: function canvasGraphicsSetStrokeCMYKColor(c, m, y, k) {
+      var color = Util.makeCssCmyk(c, m, y, k);
+      this.ctx.strokeStyle = color;
+      this.current.strokeColor = color;
+    },
+    setFillCMYKColor: function canvasGraphicsSetFillCMYKColor(c, m, y, k) {
+      var color = Util.makeCssCmyk(c, m, y, k);
+      this.ctx.fillStyle = color;
+      this.current.fillColor = color;
+    },
+
+    shadingFill: function canvasGraphicsShadingFill(patternIR) {
+      var ctx = this.ctx;
+
+      this.save();
+      ctx.fillStyle = Pattern.shadingFromIR(ctx, patternIR);
+
+      var inv = ctx.mozCurrentTransformInverse;
+      if (inv) {
+        var canvas = ctx.canvas;
+        var width = canvas.width;
+        var height = canvas.height;
+
+        var bl = Util.applyTransform([0, 0], inv);
+        var br = Util.applyTransform([0, width], inv);
+        var ul = Util.applyTransform([height, 0], inv);
+        var ur = Util.applyTransform([height, width], inv);
+
+        var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
+        var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
+        var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
+        var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
+
+        this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);
+      } else {
+        // HACK to draw the gradient onto an infinite rectangle.
+        // PDF gradients are drawn across the entire image while
+        // Canvas only allows gradients to be drawn in a rectangle
+        // The following bug should allow us to remove this.
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=664884
+
+        this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);
+      }
+
+      this.restore();
+    },
+
+    // Images
+    beginInlineImage: function canvasGraphicsBeginInlineImage() {
+      error('Should not call beginInlineImage');
+    },
+    beginImageData: function canvasGraphicsBeginImageData() {
+      error('Should not call beginImageData');
+    },
+
+    paintFormXObjectBegin:
+    function canvasGraphicsPaintFormXObject(matrix, bbox) {
+      this.save();
+
+      if (matrix && isArray(matrix) && 6 == matrix.length)
+        this.transform.apply(this, matrix);
+
+      if (bbox && isArray(bbox) && 4 == bbox.length) {
+        var width = bbox[2] - bbox[0];
+        var height = bbox[3] - bbox[1];
+        this.rectangle(bbox[0], bbox[1], width, height);
+        this.clip();
+        this.endPath();
+      }
+    },
+
+    paintFormXObjectEnd: function() {
+      this.restore();
+    },
+
+    paintJpegXObject: function(objId, w, h) {
+      var image = this.objs.get(objId);
+      if (!image) {
+        error('Dependent image isn\'t ready yet');
+      }
+
+      this.save();
+
+      var ctx = this.ctx;
+      // scale the image to the unit square
+      ctx.scale(1 / w, -1 / h);
+
+      var domImage = image.getImage();
+      ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
+                    0, -h, w, h);
+
+      this.restore();
+    },
+
+    paintImageMaskXObject: function(imgArray, inverseDecode, width, height) {
+      function applyStencilMask(buffer, inverseDecode) {
+        var imgArrayPos = 0;
+        var i, j, mask, buf;
+        // removing making non-masked pixels transparent
+        var bufferPos = 3; // alpha component offset
+        for (i = 0; i < height; i++) {
+          mask = 0;
+          for (j = 0; j < width; j++) {
+            if (!mask) {
+              buf = imgArray[imgArrayPos++];
+              mask = 128;
+            }
+            if (!(buf & mask) == inverseDecode) {
+              buffer[bufferPos] = 0;
+            }
+            bufferPos += 4;
+            mask >>= 1;
+          }
+        }
+      }
+
+      this.save();
+
+      var ctx = this.ctx;
+      var w = width, h = height;
+      // scale the image to the unit square
+      ctx.scale(1 / w, -1 / h);
+
+      var tmpCanvas = new this.ScratchCanvas(w, h);
+      var tmpCtx = tmpCanvas.getContext('2d');
+
+      var fillColor = this.current.fillColor;
+      tmpCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
+                          fillColor.type === 'Pattern') ?
+                          fillColor.getPattern(tmpCtx) : fillColor;
+      tmpCtx.fillRect(0, 0, w, h);
+
+      var imgData = tmpCtx.getImageData(0, 0, w, h);
+      var pixels = imgData.data;
+
+      applyStencilMask(pixels, inverseDecode);
+
+      tmpCtx.putImageData(imgData, 0, 0);
+      ctx.drawImage(tmpCanvas, 0, -h);
+      this.restore();
+    },
+
+    paintImageXObject: function(imgData) {
+      this.save();
+      var ctx = this.ctx;
+      var w = imgData.width;
+      var h = imgData.height;
+      // scale the image to the unit square
+      ctx.scale(1 / w, -1 / h);
+
+      var tmpCanvas = new this.ScratchCanvas(w, h);
+      var tmpCtx = tmpCanvas.getContext('2d');
+      var tmpImgData;
+
+      // Some browsers can set an UInt8Array directly as imageData, some
+      // can't. As long as we don't have proper feature detection, just
+      // copy over each pixel and set the imageData that way.
+      tmpImgData = tmpCtx.getImageData(0, 0, w, h);
+
+      // Copy over the imageData.
+      var tmpImgDataPixels = tmpImgData.data;
+      var len = tmpImgDataPixels.length;
+
+      while (len--) {
+        tmpImgDataPixels[len] = imgData.data[len];
+      }
+
+      tmpCtx.putImageData(tmpImgData, 0, 0);
+      ctx.drawImage(tmpCanvas, 0, -h);
+      this.restore();
+    },
+
+    // Marked content
+
+    markPoint: function canvasGraphicsMarkPoint(tag) {
+      TODO('Marked content');
+    },
+    markPointProps: function canvasGraphicsMarkPointProps(tag, properties) {
+      TODO('Marked content');
+    },
+    beginMarkedContent: function canvasGraphicsBeginMarkedContent(tag) {
+      TODO('Marked content');
+    },
+    beginMarkedContentProps:
+      function canvasGraphicsBeginMarkedContentProps(tag, properties) {
+      TODO('Marked content');
+    },
+    endMarkedContent: function canvasGraphicsEndMarkedContent() {
+      TODO('Marked content');
+    },
+
+    // Compatibility
+
+    beginCompat: function canvasGraphicsBeginCompat() {
+      TODO('ignore undefined operators (should we do that anyway?)');
+    },
+    endCompat: function canvasGraphicsEndCompat() {
+      TODO('stop ignoring undefined operators');
+    },
+
+    // Helper functions
+
+    consumePath: function canvasGraphicsConsumePath() {
+      if (this.pendingClip) {
+        var savedFillRule = null;
+        if (this.pendingClip == EO_CLIP)
+          savedFillRule = this.setEOFillRule();
+
+        this.ctx.clip();
+
+        this.pendingClip = null;
+        if (savedFillRule !== null)
+          this.restoreFillRule(savedFillRule);
+      }
+      this.ctx.beginPath();
+    },
+    // We generally keep the canvas context set for
+    // nonzero-winding, and just set evenodd for the operations
+    // that need them.
+    setEOFillRule: function canvasGraphicsSetEOFillRule() {
+      var savedFillRule = this.ctx.mozFillRule;
+      this.ctx.mozFillRule = 'evenodd';
+      return savedFillRule;
+    },
+    restoreFillRule: function canvasGraphicsRestoreFillRule(rule) {
+      this.ctx.mozFillRule = rule;
+    }
+  };
+
+  return constructor;
+})();
+

src/cidmaps.js

@@ -6930,3 +6930,4 @@ var CIDToUnicodeMaps = {
     {f: 39, c: 19576}, {f: 111, c: 19620}, {f: 148, c: 19738},
     {f: 7, c: 19887}]
 };
+

src/colorspace.js

@@ -0,0 +1,403 @@
+/* -*- 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 ColorSpace = (function colorSpaceColorSpace() {
+  // Constructor should define this.numComps, this.defaultColor, this.name
+  function constructor() {
+    error('should not call ColorSpace constructor');
+  }
+
+  constructor.prototype = {
+    // Input: array of size numComps representing color component values
+    // Output: array of rgb values, each value ranging from [0.1]
+    getRgb: function cs_getRgb(color) {
+      error('Should not call ColorSpace.getRgb: ' + color);
+    },
+    // Input: Uint8Array of component values, each value scaled to [0,255]
+    // Output: Uint8Array of rgb values, each value scaled to [0,255]
+    getRgbBuffer: function cs_getRgbBuffer(input) {
+      error('Should not call ColorSpace.getRgbBuffer: ' + input);
+    }
+  };
+
+  constructor.parse = function colorspace_parse(cs, xref, res) {
+    var IR = constructor.parseToIR(cs, xref, res, true);
+    if (IR instanceof SeparationCS)
+      return IR;
+
+    return constructor.fromIR(IR);
+  };
+
+  constructor.fromIR = function(IR) {
+    var name;
+    if (isArray(IR)) {
+      name = IR[0];
+    } else {
+      name = IR;
+    }
+
+    switch (name) {
+      case 'DeviceGrayCS':
+        return new DeviceGrayCS();
+      case 'DeviceRgbCS':
+        return new DeviceRgbCS();
+      case 'DeviceCmykCS':
+        return new DeviceCmykCS();
+      case 'PatternCS':
+        var baseCS = IR[1];
+        if (baseCS == null) {
+          return new PatternCS(null);
+        } else {
+          return new PatternCS(ColorSpace.fromIR(baseCS));
+        }
+      case 'IndexedCS':
+        var baseCS = IR[1];
+        var hiVal = IR[2];
+        var lookup = IR[3];
+        return new IndexedCS(ColorSpace.fromIR(baseCS), hiVal, lookup);
+      case 'SeparationCS':
+        var alt = IR[1];
+        var tintFnIR = IR[2];
+
+        return new SeparationCS(
+          ColorSpace.fromIR(alt),
+          PDFFunction.fromIR(tintFnIR)
+        );
+      default:
+        error('Unkown name ' + name);
+    }
+    return null;
+  }
+
+  constructor.parseToIR = function colorspace_parse(cs, xref, res, parseOnly) {
+    if (isName(cs)) {
+      var colorSpaces = xref.fetchIfRef(res.get('ColorSpace'));
+      if (isDict(colorSpaces)) {
+        var refcs = colorSpaces.get(cs.name);
+        if (refcs)
+          cs = refcs;
+      }
+    }
+
+    cs = xref.fetchIfRef(cs);
+
+    if (isName(cs)) {
+      var mode = cs.name;
+      this.mode = mode;
+
+      switch (mode) {
+        case 'DeviceGray':
+        case 'G':
+          return 'DeviceGrayCS';
+        case 'DeviceRGB':
+        case 'RGB':
+          return 'DeviceRgbCS';
+        case 'DeviceCMYK':
+        case 'CMYK':
+          return 'DeviceCmykCS';
+        case 'Pattern':
+          return ['PatternCS', null];
+        default:
+          error('unrecognized colorspace ' + mode);
+      }
+    } else if (isArray(cs)) {
+      var mode = cs[0].name;
+      this.mode = mode;
+
+      switch (mode) {
+        case 'DeviceGray':
+        case 'G':
+          return 'DeviceGrayCS';
+        case 'DeviceRGB':
+        case 'RGB':
+          return 'DeviceRgbCS';
+        case 'DeviceCMYK':
+        case 'CMYK':
+          return 'DeviceCmykCS';
+        case 'CalGray':
+          return 'DeviceGrayCS';
+        case 'CalRGB':
+          return 'DeviceRgbCS';
+        case 'ICCBased':
+          var stream = xref.fetchIfRef(cs[1]);
+          var dict = stream.dict;
+          var numComps = dict.get('N');
+          if (numComps == 1)
+            return 'DeviceGrayCS';
+          if (numComps == 3)
+            return 'DeviceRgbCS';
+          if (numComps == 4)
+            return 'DeviceCmykCS';
+          break;
+        case 'Pattern':
+          var baseCS = cs[1];
+          if (baseCS)
+            baseCS = ColorSpace.parseToIR(baseCS, xref, res);
+          return ['PatternCS', baseCS];
+        case 'Indexed':
+          var baseCS = ColorSpace.parseToIR(cs[1], xref, res);
+          var hiVal = cs[2] + 1;
+          var lookup = xref.fetchIfRef(cs[3]);
+          return ['IndexedCS', baseCS, hiVal, lookup];
+        case 'Separation':
+          var alt = ColorSpace.parseToIR(cs[2], xref, res);
+          var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3]));
+          return ['SeparationCS', alt, tintFnIR];
+        case 'Lab':
+        case 'DeviceN':
+        default:
+          error('unimplemented color space object "' + mode + '"');
+      }
+    } else {
+      error('unrecognized color space object: "' + cs + '"');
+    }
+    return null;
+  };
+
+  return constructor;
+})();
+
+var SeparationCS = (function separationCS() {
+  function constructor(base, tintFn) {
+    this.name = 'Separation';
+    this.numComps = 1;
+    this.defaultColor = [1];
+
+    this.base = base;
+    this.tintFn = tintFn;
+  }
+
+  constructor.prototype = {
+    getRgb: function sepcs_getRgb(color) {
+      var tinted = this.tintFn(color);
+      return this.base.getRgb(tinted);
+    },
+    getRgbBuffer: function sepcs_getRgbBuffer(input, bits) {
+      var tintFn = this.tintFn;
+      var base = this.base;
+      var scale = 1 / ((1 << bits) - 1);
+
+      var length = input.length;
+      var pos = 0;
+
+      var numComps = base.numComps;
+      var baseBuf = new Uint8Array(numComps * length);
+      for (var i = 0; i < length; ++i) {
+        var scaled = input[i] * scale;
+        var tinted = tintFn([scaled]);
+        for (var j = 0; j < numComps; ++j)
+          baseBuf[pos++] = 255 * tinted[j];
+      }
+      return base.getRgbBuffer(baseBuf, 8);
+    }
+  };
+
+  return constructor;
+})();
+
+var PatternCS = (function patternCS() {
+  function constructor(baseCS) {
+    this.name = 'Pattern';
+    this.base = baseCS;
+  }
+  constructor.prototype = {};
+
+  return constructor;
+})();
+
+var IndexedCS = (function indexedCS() {
+  function constructor(base, highVal, lookup) {
+    this.name = 'Indexed';
+    this.numComps = 1;
+    this.defaultColor = [0];
+
+    this.base = base;
+    var baseNumComps = base.numComps;
+    this.highVal = highVal;
+
+    var length = baseNumComps * highVal;
+    var lookupArray = new Uint8Array(length);
+    if (isStream(lookup)) {
+      var bytes = lookup.getBytes(length);
+      lookupArray.set(bytes);
+    } else if (isString(lookup)) {
+      for (var i = 0; i < length; ++i)
+        lookupArray[i] = lookup.charCodeAt(i);
+    } else {
+      error('Unrecognized lookup table: ' + lookup);
+    }
+    this.lookup = lookupArray;
+  }
+
+  constructor.prototype = {
+    getRgb: function indexcs_getRgb(color) {
+      var numComps = this.base.numComps;
+
+      var start = color[0] * numComps;
+      var c = [];
+
+      for (var i = start, ii = start + numComps; i < ii; ++i)
+        c.push(this.lookup[i]);
+
+      return this.base.getRgb(c);
+    },
+    getRgbBuffer: function indexcs_getRgbBuffer(input) {
+      var base = this.base;
+      var numComps = base.numComps;
+      var lookup = this.lookup;
+      var length = input.length;
+
+      var baseBuf = new Uint8Array(length * numComps);
+      var baseBufPos = 0;
+      for (var i = 0; i < length; ++i) {
+        var lookupPos = input[i] * numComps;
+        for (var j = 0; j < numComps; ++j) {
+          baseBuf[baseBufPos++] = lookup[lookupPos + j];
+        }
+      }
+
+      return base.getRgbBuffer(baseBuf, 8);
+    }
+  };
+  return constructor;
+})();
+
+var DeviceGrayCS = (function deviceGrayCS() {
+  function constructor() {
+    this.name = 'DeviceGray';
+    this.numComps = 1;
+    this.defaultColor = [0];
+  }
+
+  constructor.prototype = {
+    getRgb: function graycs_getRgb(color) {
+      var c = color[0];
+      return [c, c, c];
+    },
+    getRgbBuffer: function graycs_getRgbBuffer(input, bits) {
+      var scale = 255 / ((1 << bits) - 1);
+      var length = input.length;
+      var rgbBuf = new Uint8Array(length * 3);
+      for (var i = 0, j = 0; i < length; ++i) {
+        var c = (scale * input[i]) | 0;
+        rgbBuf[j++] = c;
+        rgbBuf[j++] = c;
+        rgbBuf[j++] = c;
+      }
+      return rgbBuf;
+    }
+  };
+  return constructor;
+})();
+
+var DeviceRgbCS = (function deviceRgbCS() {
+  function constructor(bits) {
+    this.name = 'DeviceRGB';
+    this.numComps = 3;
+    this.defaultColor = [0, 0, 0];
+  }
+  constructor.prototype = {
+    getRgb: function rgbcs_getRgb(color) {
+      return color;
+    },
+    getRgbBuffer: function rgbcs_getRgbBuffer(input, bits) {
+      if (bits == 8)
+        return input;
+      var scale = 255 / ((1 << bits) - 1);
+      var i, length = input.length;
+      var rgbBuf = new Uint8Array(length);
+      for (i = 0; i < length; ++i)
+        rgbBuf[i] = (scale * input[i]) | 0;
+      return rgbBuf;
+    }
+  };
+  return constructor;
+})();
+
+var DeviceCmykCS = (function deviceCmykCS() {
+  function constructor() {
+    this.name = 'DeviceCMYK';
+    this.numComps = 4;
+    this.defaultColor = [0, 0, 0, 1];
+  }
+  constructor.prototype = {
+    getRgb: function cmykcs_getRgb(color) {
+      var c = color[0], m = color[1], y = color[2], k = color[3];
+      var c1 = 1 - c, m1 = 1 - m, y1 = 1 - y, k1 = 1 - k;
+
+      var x, r, g, b;
+      // this is a matrix multiplication, unrolled for performance
+      // code is taken from the poppler implementation
+      x = c1 * m1 * y1 * k1; // 0 0 0 0
+      r = g = b = x;
+      x = c1 * m1 * y1 * k;  // 0 0 0 1
+      r += 0.1373 * x;
+      g += 0.1216 * x;
+      b += 0.1255 * x;
+      x = c1 * m1 * y * k1; // 0 0 1 0
+      r += x;
+      g += 0.9490 * x;
+      x = c1 * m1 * y * k;  // 0 0 1 1
+      r += 0.1098 * x;
+      g += 0.1020 * x;
+      x = c1 * m * y1 * k1; // 0 1 0 0
+      r += 0.9255 * x;
+      b += 0.5490 * x;
+      x = c1 * m * y1 * k;  // 0 1 0 1
+      r += 0.1412 * x;
+      x = c1 * m * y * k1; // 0 1 1 0
+      r += 0.9294 * x;
+      g += 0.1098 * x;
+      b += 0.1412 * x;
+      x = c1 * m * y * k;  // 0 1 1 1
+      r += 0.1333 * x;
+      x = c * m1 * y1 * k1; // 1 0 0 0
+      g += 0.6784 * x;
+      b += 0.9373 * x;
+      x = c * m1 * y1 * k;  // 1 0 0 1
+      g += 0.0588 * x;
+      b += 0.1412 * x;
+      x = c * m1 * y * k1; // 1 0 1 0
+      g += 0.6510 * x;
+      b += 0.3137 * x;
+      x = c * m1 * y * k;  // 1 0 1 1
+      g += 0.0745 * x;
+      x = c * m * y1 * k1; // 1 1 0 0
+      r += 0.1804 * x;
+      g += 0.1922 * x;
+      b += 0.5725 * x;
+      x = c * m * y1 * k;  // 1 1 0 1
+      b += 0.0078 * x;
+      x = c * m * y * k1; // 1 1 1 0
+      r += 0.2118 * x;
+      g += 0.2119 * x;
+      b += 0.2235 * x;
+
+      return [r, g, b];
+    },
+    getRgbBuffer: function cmykcs_getRgbBuffer(colorBuf, bits) {
+      var scale = 1 / ((1 << bits) - 1);
+      var length = colorBuf.length / 4;
+      var rgbBuf = new Uint8Array(length * 3);
+      var rgbBufPos = 0;
+      var colorBufPos = 0;
+
+      for (var i = 0; i < length; i++) {
+        var cmyk = [];
+        for (var j = 0; j < 4; ++j)
+          cmyk.push(scale * colorBuf[colorBufPos++]);
+
+        var rgb = this.getRgb(cmyk);
+        for (var j = 0; j < 3; ++j)
+          rgbBuf[rgbBufPos++] = Math.round(rgb[j] * 255);
+      }
+
+      return rgbBuf;
+    }
+  };
+
+  return constructor;
+})();
+

src/core.js

@@ -0,0 +1,613 @@
+/* -*- 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 globalScope = (typeof window === 'undefined') ? this : window;
+
+var ERRORS = 0, WARNINGS = 1, TODOS = 5;
+var verbosity = WARNINGS;
+var useWorker = false;
+
+// The global PDFJS object exposes the API
+// In production, it will be declared outside a global wrapper
+// In development, it will be declared here
+if (!globalScope.PDFJS) {
+  globalScope.PDFJS = {};
+}
+
+// getPdf()
+// Convenience function to perform binary Ajax GET
+// Usage: getPdf('http://...', callback)
+//        getPdf({
+//                 url:String ,
+//                 [,progress:Function, error:Function]
+//               },
+//               callback)
+function getPdf(arg, callback) {
+  var params = arg;
+  if (typeof arg === 'string')
+    params = { url: arg };
+
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', params.url);
+  xhr.mozResponseType = xhr.responseType = 'arraybuffer';
+  xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
+
+  if ('progress' in params)
+    xhr.onprogress = params.progress || undefined;
+
+  if ('error' in params)
+    xhr.onerror = params.error || undefined;
+
+  xhr.onreadystatechange = function getPdfOnreadystatechange() {
+    if (xhr.readyState === 4 && xhr.status === xhr.expected) {
+      var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
+                  xhr.responseArrayBuffer || xhr.response);
+      callback(data);
+    }
+  };
+  xhr.send(null);
+}
+globalScope.PDFJS.getPdf = getPdf;
+
+var Page = (function pagePage() {
+  function constructor(xref, pageNumber, pageDict, ref) {
+    this.pageNumber = pageNumber;
+    this.pageDict = pageDict;
+    this.stats = {
+      create: Date.now(),
+      compile: 0.0,
+      fonts: 0.0,
+      images: 0.0,
+      render: 0.0
+    };
+    this.xref = xref;
+    this.ref = ref;
+  }
+
+  constructor.prototype = {
+    getPageProp: function pageGetPageProp(key) {
+      return this.xref.fetchIfRef(this.pageDict.get(key));
+    },
+    inheritPageProp: function pageInheritPageProp(key) {
+      var dict = this.pageDict;
+      var obj = dict.get(key);
+      while (obj === undefined) {
+        dict = this.xref.fetchIfRef(dict.get('Parent'));
+        if (!dict)
+          break;
+        obj = dict.get(key);
+      }
+      return obj;
+    },
+    get content() {
+      return shadow(this, 'content', this.getPageProp('Contents'));
+    },
+    get resources() {
+      return shadow(this, 'resources', this.inheritPageProp('Resources'));
+    },
+    get mediaBox() {
+      var obj = this.inheritPageProp('MediaBox');
+      // Reset invalid media box to letter size.
+      if (!isArray(obj) || obj.length !== 4)
+        obj = [0, 0, 612, 792];
+      return shadow(this, 'mediaBox', obj);
+    },
+    get view() {
+      var obj = this.inheritPageProp('CropBox');
+      var view = {
+        x: 0,
+        y: 0,
+        width: this.width,
+        height: this.height
+      };
+      if (isArray(obj) && obj.length == 4) {
+        var tl = this.rotatePoint(obj[0], obj[1]);
+        var br = this.rotatePoint(obj[2], obj[3]);
+        view.x = Math.min(tl.x, br.x);
+        view.y = Math.min(tl.y, br.y);
+        view.width = Math.abs(tl.x - br.x);
+        view.height = Math.abs(tl.y - br.y);
+      }
+
+      return shadow(this, 'cropBox', view);
+    },
+    get annotations() {
+      return shadow(this, 'annotations', this.inheritPageProp('Annots'));
+    },
+    get width() {
+      var mediaBox = this.mediaBox;
+      var rotate = this.rotate;
+      var width;
+      if (rotate == 0 || rotate == 180) {
+        width = (mediaBox[2] - mediaBox[0]);
+      } else {
+        width = (mediaBox[3] - mediaBox[1]);
+      }
+      return shadow(this, 'width', width);
+    },
+    get height() {
+      var mediaBox = this.mediaBox;
+      var rotate = this.rotate;
+      var height;
+      if (rotate == 0 || rotate == 180) {
+        height = (mediaBox[3] - mediaBox[1]);
+      } else {
+        height = (mediaBox[2] - mediaBox[0]);
+      }
+      return shadow(this, 'height', height);
+    },
+    get rotate() {
+      var rotate = this.inheritPageProp('Rotate') || 0;
+      // Normalize rotation so it's a multiple of 90 and between 0 and 270
+      if (rotate % 90 != 0) {
+        rotate = 0;
+      } else if (rotate >= 360) {
+        rotate = rotate % 360;
+      } else if (rotate < 0) {
+        // The spec doesn't cover negatives, assume its counterclockwise
+        // rotation. The following is the other implementation of modulo.
+        rotate = ((rotate % 360) + 360) % 360;
+      }
+      return shadow(this, 'rotate', rotate);
+    },
+
+    startRenderingFromIRQueue: function startRenderingFromIRQueue(
+                                                IRQueue, fonts) {
+      var self = this;
+      this.IRQueue = IRQueue;
+      var gfx = new CanvasGraphics(this.ctx, this.objs);
+      var startTime = Date.now();
+
+      var displayContinuation = function pageDisplayContinuation() {
+        // Always defer call to display() to work around bug in
+        // Firefox error reporting from XHR callbacks.
+        setTimeout(function pageSetTimeout() {
+          try {
+            self.display(gfx, self.callback);
+          } catch (e) {
+            if (self.callback) self.callback(e.toString());
+            throw e;
+          }
+        });
+      };
+
+      this.ensureFonts(fonts, function() {
+        displayContinuation();
+      });
+    },
+
+    getIRQueue: function(handler, dependency) {
+      if (this.IRQueue) {
+        // content was compiled
+        return this.IRQueue;
+      }
+
+      var xref = this.xref;
+      var content = xref.fetchIfRef(this.content);
+      var resources = xref.fetchIfRef(this.resources);
+      if (isArray(content)) {
+        // fetching items
+        var i, n = content.length;
+        for (i = 0; i < n; ++i)
+          content[i] = xref.fetchIfRef(content[i]);
+        content = new StreamsSequenceStream(content);
+      }
+
+      var pe = this.pe = new PartialEvaluator(
+                                xref, handler, 'p' + this.pageNumber + '_');
+      var IRQueue = {};
+      return this.IRQueue = pe.getIRQueue(
+                                content, resources, IRQueue, dependency);
+    },
+
+    ensureFonts: function(fonts, callback) {
+      // Convert the font names to the corresponding font obj.
+      for (var i = 0; i < fonts.length; i++) {
+        fonts[i] = this.objs.objs[fonts[i]].data;
+      }
+
+      // Load all the fonts
+      var fontObjs = FontLoader.bind(
+        fonts,
+        function(fontObjs) {
+          this.stats.fonts = Date.now();
+
+          callback.call(this);
+        }.bind(this),
+        this.objs
+      );
+    },
+
+    display: function(gfx, callback) {
+      var xref = this.xref;
+      var resources = xref.fetchIfRef(this.resources);
+      var mediaBox = xref.fetchIfRef(this.mediaBox);
+      assertWellFormed(isDict(resources), 'invalid page resources');
+
+      gfx.xref = xref;
+      gfx.res = resources;
+      gfx.beginDrawing({ x: mediaBox[0], y: mediaBox[1],
+            width: this.width,
+            height: this.height,
+            rotate: this.rotate });
+
+      var startIdx = 0;
+      var length = this.IRQueue.fnArray.length;
+      var IRQueue = this.IRQueue;
+
+      var self = this;
+      var startTime = Date.now();
+      function next() {
+        startIdx = gfx.executeIRQueue(IRQueue, startIdx, next);
+        if (startIdx == length) {
+          self.stats.render = Date.now();
+          if (callback) callback();
+        }
+      }
+      next();
+    },
+    rotatePoint: function pageRotatePoint(x, y, reverse) {
+      var rotate = reverse ? (360 - this.rotate) : this.rotate;
+      switch (rotate) {
+        case 180:
+          return {x: this.width - x, y: y};
+        case 90:
+          return {x: this.width - y, y: this.height - x};
+        case 270:
+          return {x: y, y: x};
+        case 360:
+        case 0:
+        default:
+          return {x: x, y: this.height - y};
+      }
+    },
+    getLinks: function pageGetLinks() {
+      var xref = this.xref;
+      var annotations = xref.fetchIfRef(this.annotations) || [];
+      var i, n = annotations.length;
+      var links = [];
+      for (i = 0; i < n; ++i) {
+        var annotation = xref.fetch(annotations[i]);
+        if (!isDict(annotation))
+          continue;
+        var subtype = annotation.get('Subtype');
+        if (!isName(subtype) || subtype.name != 'Link')
+          continue;
+        var rect = annotation.get('Rect');
+        var topLeftCorner = this.rotatePoint(rect[0], rect[1]);
+        var bottomRightCorner = this.rotatePoint(rect[2], rect[3]);
+
+        var link = {};
+        link.x = Math.min(topLeftCorner.x, bottomRightCorner.x);
+        link.y = Math.min(topLeftCorner.y, bottomRightCorner.y);
+        link.width = Math.abs(topLeftCorner.x - bottomRightCorner.x);
+        link.height = Math.abs(topLeftCorner.y - bottomRightCorner.y);
+        var a = this.xref.fetchIfRef(annotation.get('A'));
+        if (a) {
+          switch (a.get('S').name) {
+            case 'URI':
+              link.url = a.get('URI');
+              break;
+            case 'GoTo':
+              link.dest = a.get('D');
+              break;
+            default:
+              TODO('other link types');
+          }
+        } else if (annotation.has('Dest')) {
+          // simple destination link
+          var dest = annotation.get('Dest');
+          link.dest = isName(dest) ? dest.name : dest;
+        }
+        links.push(link);
+      }
+      return links;
+    },
+    startRendering: function(ctx, callback)  {
+      this.ctx = ctx;
+      this.callback = callback;
+
+      this.startRenderingTime = Date.now();
+      this.pdf.startRendering(this);
+    }
+  };
+
+  return constructor;
+})();
+
+/**
+ * The `PDFDocModel` holds all the data of the PDF file. Compared to the
+ * `PDFDoc`, this one doesn't have any job management code.
+ * Right now there exists one PDFDocModel on the main thread + one object
+ * for each worker. If there is no worker support enabled, there are two
+ * `PDFDocModel` objects on the main thread created.
+ * TODO: Refactor the internal object structure, such that there is no
+ * need for the `PDFDocModel` anymore and there is only one object on the
+ * main thread and not one entire copy on each worker instance.
+ */
+var PDFDocModel = (function pdfDoc() {
+  function constructor(arg, callback) {
+    if (isStream(arg))
+      init.call(this, arg);
+    else if (isArrayBuffer(arg))
+      init.call(this, new Stream(arg));
+    else
+      error('PDFDocModel: Unknown argument type');
+  }
+
+  function init(stream) {
+    assertWellFormed(stream.length > 0, 'stream must have data');
+    this.stream = stream;
+    this.setup();
+  }
+
+  function find(stream, needle, limit, backwards) {
+    var pos = stream.pos;
+    var end = stream.end;
+    var str = '';
+    if (pos + limit > end)
+      limit = end - pos;
+    for (var n = 0; n < limit; ++n)
+      str += stream.getChar();
+    stream.pos = pos;
+    var index = backwards ? str.lastIndexOf(needle) : str.indexOf(needle);
+    if (index == -1)
+      return false; /* not found */
+    stream.pos += index;
+    return true; /* found */
+  }
+
+  constructor.prototype = {
+    get linearization() {
+      var length = this.stream.length;
+      var linearization = false;
+      if (length) {
+        linearization = new Linearization(this.stream);
+        if (linearization.length != length)
+          linearization = false;
+      }
+      // shadow the prototype getter with a data property
+      return shadow(this, 'linearization', linearization);
+    },
+    get startXRef() {
+      var stream = this.stream;
+      var startXRef = 0;
+      var linearization = this.linearization;
+      if (linearization) {
+        // Find end of first obj.
+        stream.reset();
+        if (find(stream, 'endobj', 1024))
+          startXRef = stream.pos + 6;
+      } else {
+        // Find startxref at the end of the file.
+        var start = stream.end - 1024;
+        if (start < 0)
+          start = 0;
+        stream.pos = start;
+        if (find(stream, 'startxref', 1024, true)) {
+          stream.skip(9);
+          var ch;
+          do {
+            ch = stream.getChar();
+          } while (Lexer.isSpace(ch));
+          var str = '';
+          while ((ch - '0') <= 9) {
+            str += ch;
+            ch = stream.getChar();
+          }
+          startXRef = parseInt(str, 10);
+          if (isNaN(startXRef))
+            startXRef = 0;
+        }
+      }
+      // shadow the prototype getter with a data property
+      return shadow(this, 'startXRef', startXRef);
+    },
+    get mainXRefEntriesOffset() {
+      var mainXRefEntriesOffset = 0;
+      var linearization = this.linearization;
+      if (linearization)
+        mainXRefEntriesOffset = linearization.mainXRefEntriesOffset;
+      // shadow the prototype getter with a data property
+      return shadow(this, 'mainXRefEntriesOffset', mainXRefEntriesOffset);
+    },
+    // Find the header, remove leading garbage and setup the stream
+    // starting from the header.
+    checkHeader: function pdfDocCheckHeader() {
+      var stream = this.stream;
+      stream.reset();
+      if (find(stream, '%PDF-', 1024)) {
+        // Found the header, trim off any garbage before it.
+        stream.moveStart();
+        return;
+      }
+      // May not be a PDF file, continue anyway.
+    },
+    setup: function pdfDocSetup(ownerPassword, userPassword) {
+      this.checkHeader();
+      this.xref = new XRef(this.stream,
+                           this.startXRef,
+                           this.mainXRefEntriesOffset);
+      this.catalog = new Catalog(this.xref);
+    },
+    get numPages() {
+      var linearization = this.linearization;
+      var num = linearization ? linearization.numPages : this.catalog.numPages;
+      // shadow the prototype getter
+      return shadow(this, 'numPages', num);
+    },
+    getPage: function pdfDocGetPage(n) {
+      return this.catalog.getPage(n);
+    }
+  };
+
+  return constructor;
+})();
+
+var PDFDoc = (function() {
+  function constructor(arg, callback) {
+    var stream = null;
+    var data = null;
+
+    if (isStream(arg)) {
+      stream = arg;
+      data = arg.bytes;
+    } else if (isArrayBuffer(arg)) {
+      stream = new Stream(arg);
+      data = arg;
+    } else {
+      error('PDFDoc: Unknown argument type');
+    }
+
+    this.data = data;
+    this.stream = stream;
+    this.pdf = new PDFDocModel(stream);
+
+    this.catalog = this.pdf.catalog;
+    this.objs = new PDFObjects();
+
+    this.pageCache = [];
+
+    if (useWorker) {
+      var worker = new Worker('../src/worker_loader.js');
+    } else {
+      // If we don't use a worker, just post/sendMessage to the main thread.
+      var worker = {
+        postMessage: function(obj) {
+          worker.onmessage({data: obj});
+        },
+        terminate: function() {}
+      };
+    }
+    this.worker = worker;
+
+    this.fontsLoading = {};
+
+    var processorHandler = this.processorHandler =
+                                        new MessageHandler('main', worker);
+
+    processorHandler.on('page', function(data) {
+      var pageNum = data.pageNum;
+      var page = this.pageCache[pageNum];
+      var depFonts = data.depFonts;
+
+      page.startRenderingFromIRQueue(data.IRQueue, depFonts);
+    }, this);
+
+    processorHandler.on('obj', function(data) {
+      var id = data[0];
+      var type = data[1];
+
+      switch (type) {
+        case 'JpegStream':
+          var IR = data[2];
+          new JpegImage(id, IR, this.objs);
+        break;
+        case 'Font':
+          var name = data[2];
+          var file = data[3];
+          var properties = data[4];
+
+          if (file) {
+            var fontFileDict = new Dict();
+            fontFileDict.map = file.dict.map;
+
+            var fontFile = new Stream(file.bytes, file.start,
+                                      file.end - file.start, fontFileDict);
+
+            // Check if this is a FlateStream. Otherwise just use the created
+            // Stream one. This makes complex_ttf_font.pdf work.
+            var cmf = file.bytes[0];
+            if ((cmf & 0x0f) == 0x08) {
+              file = new FlateStream(fontFile);
+            } else {
+              file = fontFile;
+            }
+          }
+
+          // For now, resolve the font object here direclty. The real font
+          // object is then created in FontLoader.bind().
+          this.objs.resolve(id, {
+            name: name,
+            file: file,
+            properties: properties
+          });
+        break;
+        default:
+          throw 'Got unkown object type ' + type;
+      }
+    }, this);
+
+    processorHandler.on('font_ready', function(data) {
+      var id = data[0];
+      var font = new FontShape(data[1]);
+
+      // If there is no string, then there is nothing to attach to the DOM.
+      if (!font.str) {
+        this.objs.resolve(id, font);
+      } else {
+        this.objs.setData(id, font);
+      }
+    }.bind(this));
+
+    if (!useWorker) {
+      // If the main thread is our worker, setup the handling for the messages
+      // the main thread sends to it self.
+      WorkerProcessorHandler.setup(processorHandler);
+    }
+
+    this.workerReadyPromise = new Promise('workerReady');
+    setTimeout(function() {
+      processorHandler.send('doc', this.data);
+      this.workerReadyPromise.resolve(true);
+    }.bind(this));
+  }
+
+  constructor.prototype = {
+    get numPages() {
+      return this.pdf.numPages;
+    },
+
+    startRendering: function(page) {
+      // The worker might not be ready to receive the page request yet.
+      this.workerReadyPromise.then(function() {
+        this.processorHandler.send('page_request', page.pageNumber + 1);
+      }.bind(this));
+    },
+
+    getPage: function(n) {
+      if (this.pageCache[n])
+        return this.pageCache[n];
+
+      var page = this.pdf.getPage(n);
+      // Add a reference to the objects such that Page can forward the reference
+      // to the CanvasGraphics and so on.
+      page.objs = this.objs;
+      page.pdf = this;
+      return this.pageCache[n] = page;
+    },
+
+    destroy: function() {
+      if (this.worker)
+        this.worker.terminate();
+
+      if (this.fontWorker)
+        this.fontWorker.terminate();
+
+      for (var n in this.pageCache)
+        delete this.pageCache[n];
+
+      delete this.data;
+      delete this.stream;
+      delete this.pdf;
+      delete this.catalog;
+    }
+  };
+
+  return constructor;
+})();
+
+globalScope.PDFJS.PDFDoc = PDFDoc;
+

src/crypto.js

@@ -595,3 +595,4 @@ var CipherTransformFactory = (function cipherTransformFactory() {
 
   return constructor;
 })();
+

src/evaluator.js

@@ -0,0 +1,921 @@
+/* -*- 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 PartialEvaluator = (function partialEvaluator() {
+  function constructor(xref, handler, uniquePrefix) {
+    this.state = new EvalState();
+    this.stateStack = [];
+
+    this.xref = xref;
+    this.handler = handler;
+    this.uniquePrefix = uniquePrefix;
+    this.objIdCounter = 0;
+  }
+
+  var OP_MAP = {
+    // Graphics state
+    w: 'setLineWidth',
+    J: 'setLineCap',
+    j: 'setLineJoin',
+    M: 'setMiterLimit',
+    d: 'setDash',
+    ri: 'setRenderingIntent',
+    i: 'setFlatness',
+    gs: 'setGState',
+    q: 'save',
+    Q: 'restore',
+    cm: 'transform',
+
+    // Path
+    m: 'moveTo',
+    l: 'lineTo',
+    c: 'curveTo',
+    v: 'curveTo2',
+    y: 'curveTo3',
+    h: 'closePath',
+    re: 'rectangle',
+    S: 'stroke',
+    s: 'closeStroke',
+    f: 'fill',
+    F: 'fill',
+    'f*': 'eoFill',
+    B: 'fillStroke',
+    'B*': 'eoFillStroke',
+    b: 'closeFillStroke',
+    'b*': 'closeEOFillStroke',
+    n: 'endPath',
+
+    // Clipping
+    W: 'clip',
+    'W*': 'eoClip',
+
+    // Text
+    BT: 'beginText',
+    ET: 'endText',
+    Tc: 'setCharSpacing',
+    Tw: 'setWordSpacing',
+    Tz: 'setHScale',
+    TL: 'setLeading',
+    Tf: 'setFont',
+    Tr: 'setTextRenderingMode',
+    Ts: 'setTextRise',
+    Td: 'moveText',
+    TD: 'setLeadingMoveText',
+    Tm: 'setTextMatrix',
+    'T*': 'nextLine',
+    Tj: 'showText',
+    TJ: 'showSpacedText',
+    "'": 'nextLineShowText',
+    '"': 'nextLineSetSpacingShowText',
+
+    // Type3 fonts
+    d0: 'setCharWidth',
+    d1: 'setCharWidthAndBounds',
+
+    // Color
+    CS: 'setStrokeColorSpace',
+    cs: 'setFillColorSpace',
+    SC: 'setStrokeColor',
+    SCN: 'setStrokeColorN',
+    sc: 'setFillColor',
+    scn: 'setFillColorN',
+    G: 'setStrokeGray',
+    g: 'setFillGray',
+    RG: 'setStrokeRGBColor',
+    rg: 'setFillRGBColor',
+    K: 'setStrokeCMYKColor',
+    k: 'setFillCMYKColor',
+
+    // Shading
+    sh: 'shadingFill',
+
+    // Images
+    BI: 'beginInlineImage',
+    ID: 'beginImageData',
+    EI: 'endInlineImage',
+
+    // XObjects
+    Do: 'paintXObject',
+
+    // Marked content
+    MP: 'markPoint',
+    DP: 'markPointProps',
+    BMC: 'beginMarkedContent',
+    BDC: 'beginMarkedContentProps',
+    EMC: 'endMarkedContent',
+
+    // Compatibility
+    BX: 'beginCompat',
+    EX: 'endCompat'
+  };
+
+  constructor.prototype = {
+    getIRQueue: function partialEvaluatorGetIRQueue(stream, resources,
+                                    queue, dependency) {
+
+      var self = this;
+      var xref = this.xref;
+      var handler = this.handler;
+      var uniquePrefix = this.uniquePrefix;
+
+      function insertDependency(depList) {
+        fnArray.push('dependency');
+        argsArray.push(depList);
+        for (var i = 0; i < depList.length; i++) {
+          var dep = depList[i];
+          if (dependency.indexOf(dep) == -1) {
+            dependency.push(depList[i]);
+          }
+        }
+      }
+
+      function handleSetFont(fontName, fontRef) {
+        var loadedName = null;
+
+        var fontRes = resources.get('Font');
+
+        // TODO: TOASK: Is it possible to get here? If so, what does
+        // args[0].name should be like???
+        assert(fontRes, 'fontRes not available');
+
+        fontRes = xref.fetchIfRef(fontRes);
+        fontRef = fontRef || fontRes.get(fontName);
+        var font = xref.fetchIfRef(fontRef);
+        assertWellFormed(isDict(font));
+        if (!font.translated) {
+          font.translated = self.translateFont(font, xref, resources, handler,
+                        uniquePrefix, dependency);
+          if (font.translated) {
+            // keep track of each font we translated so the caller can
+            // load them asynchronously before calling display on a page
+            loadedName = 'font_' + uniquePrefix + ++self.objIdCounter;
+            font.translated.properties.loadedName = loadedName;
+            font.loadedName = loadedName;
+
+            var translated = font.translated;
+            handler.send('obj', [
+                loadedName,
+                'Font',
+                translated.name,
+                translated.file,
+                translated.properties
+            ]);
+          }
+        }
+        loadedName = loadedName || font.loadedName;
+
+        // Ensure the font is ready before the font is set
+        // and later on used for drawing.
+        // TODO: This should get insert to the IRQueue only once per
+        // page.
+        insertDependency([loadedName]);
+        return loadedName;
+      }
+
+      function buildPaintImageXObject(image, inline) {
+        var dict = image.dict;
+        var w = dict.get('Width', 'W');
+        var h = dict.get('Height', 'H');
+
+        if (image instanceof JpegStream) {
+          var objId = 'img_' + uniquePrefix + ++self.objIdCounter;
+          handler.send('obj', [objId, 'JpegStream', image.getIR()]);
+
+          // Add the dependency on the image object.
+          insertDependency([objId]);
+
+          // The normal fn.
+          fn = 'paintJpegXObject';
+          args = [objId, w, h];
+
+          return;
+        }
+
+        // Needs to be rendered ourself.
+
+        // Figure out if the image has an imageMask.
+        var imageMask = dict.get('ImageMask', 'IM') || false;
+
+        // If there is no imageMask, create the PDFImage and a lot
+        // of image processing can be done here.
+        if (!imageMask) {
+          var imageObj = new PDFImage(xref, resources, image, inline);
+
+          if (imageObj.imageMask) {
+            throw 'Can\'t handle this in the web worker :/';
+          }
+
+          var imgData = {
+            width: w,
+            height: h,
+            data: new Uint8Array(w * h * 4)
+          };
+          var pixels = imgData.data;
+          imageObj.fillRgbaBuffer(pixels, imageObj.decode);
+
+          fn = 'paintImageXObject';
+          args = [imgData];
+          return;
+        }
+
+        // This depends on a tmpCanvas beeing filled with the
+        // current fillStyle, such that processing the pixel
+        // data can't be done here. Instead of creating a
+        // complete PDFImage, only read the information needed
+        // for later.
+        fn = 'paintImageMaskXObject';
+
+        var width = dict.get('Width', 'W');
+        var height = dict.get('Height', 'H');
+        var bitStrideLength = (width + 7) >> 3;
+        var imgArray = image.getBytes(bitStrideLength * height);
+        var decode = dict.get('Decode', 'D');
+        var inverseDecode = !!decode && decode[0] > 0;
+
+        args = [imgArray, inverseDecode, width, height];
+      }
+
+      uniquePrefix = uniquePrefix || '';
+      if (!queue.argsArray) {
+        queue.argsArray = [];
+      }
+      if (!queue.fnArray) {
+        queue.fnArray = [];
+      }
+
+      var fnArray = queue.fnArray, argsArray = queue.argsArray;
+      var dependencyArray = dependency || [];
+
+      resources = xref.fetchIfRef(resources) || new Dict();
+      var xobjs = xref.fetchIfRef(resources.get('XObject')) || new Dict();
+      var patterns = xref.fetchIfRef(resources.get('Pattern')) || new Dict();
+      var parser = new Parser(new Lexer(stream), false);
+      var res = resources;
+      var args = [], obj;
+      var getObjBt = function getObjBt() {
+        parser = this.oldParser;
+        return { name: 'BT' };
+      };
+      var TILING_PATTERN = 1, SHADING_PATTERN = 2;
+
+      while (!isEOF(obj = parser.getObj())) {
+        if (isCmd(obj)) {
+          var cmd = obj.cmd;
+          var fn = OP_MAP[cmd];
+          if (!fn) {
+            // invalid content command, trying to recover
+            if (cmd.substr(-2) == 'BT') {
+              fn = OP_MAP[cmd.substr(0, cmd.length - 2)];
+              // feeding 'BT' on next interation
+              parser = {
+                getObj: getObjBt,
+                oldParser: parser
+              };
+            }
+          }
+          assertWellFormed(fn, 'Unknown command "' + cmd + '"');
+          // TODO figure out how to type-check vararg functions
+
+          if ((cmd == 'SCN' || cmd == 'scn') && !args[args.length - 1].code) {
+            // Use the IR version for setStroke/FillColorN.
+            fn += '_IR';
+
+            // compile tiling patterns
+            var patternName = args[args.length - 1];
+            // SCN/scn applies patterns along with normal colors
+            if (isName(patternName)) {
+              var pattern = xref.fetchIfRef(patterns.get(patternName.name));
+              if (pattern) {
+                var dict = isStream(pattern) ? pattern.dict : pattern;
+                var typeNum = dict.get('PatternType');
+
+                if (typeNum == TILING_PATTERN) {
+                  // Create an IR of the pattern code.
+                  var depIdx = dependencyArray.length;
+                  var queueObj = {};
+                  var codeIR = this.getIRQueue(pattern, dict.get('Resources'),
+                                               queueObj, dependencyArray);
+
+                  // Add the dependencies that are required to execute the
+                  // codeIR.
+                  insertDependency(dependencyArray.slice(depIdx));
+
+                  args = TilingPattern.getIR(codeIR, dict, args);
+                }
+                else if (typeNum == SHADING_PATTERN) {
+                  var shading = xref.fetchIfRef(dict.get('Shading'));
+                  var matrix = dict.get('Matrix');
+                  var pattern = Pattern.parseShading(shading, matrix, xref, res,
+                                                                  null /*ctx*/);
+                  args = pattern.getIR();
+                } else {
+                  error('Unkown PatternType ' + typeNum);
+                }
+              }
+            }
+          } else if (cmd == 'Do' && !args[0].code) {
+            // eagerly compile XForm objects
+            var name = args[0].name;
+            var xobj = xobjs.get(name);
+            if (xobj) {
+              xobj = xref.fetchIfRef(xobj);
+              assertWellFormed(isStream(xobj), 'XObject should be a stream');
+
+              var type = xobj.dict.get('Subtype');
+              assertWellFormed(
+                isName(type),
+                'XObject should have a Name subtype'
+              );
+
+              if ('Form' == type.name) {
+                var matrix = xobj.dict.get('Matrix');
+                var bbox = xobj.dict.get('BBox');
+
+                fnArray.push('paintFormXObjectBegin');
+                argsArray.push([matrix, bbox]);
+
+                // This adds the IRQueue of the xObj to the current queue.
+                var depIdx = dependencyArray.length;
+
+                this.getIRQueue(xobj, xobj.dict.get('Resources'), queue,
+                                dependencyArray);
+
+               // Add the dependencies that are required to execute the
+               // codeIR.
+               insertDependency(dependencyArray.slice(depIdx));
+
+                fn = 'paintFormXObjectEnd';
+                args = [];
+              } else if ('Image' == type.name) {
+                buildPaintImageXObject(xobj, false);
+              } else {
+                error('Unhandled XObject subtype ' + type.name);
+              }
+            }
+          } else if (cmd == 'Tf') { // eagerly collect all fonts
+            args[0] = handleSetFont(args[0].name);
+          } else if (cmd == 'EI') {
+            buildPaintImageXObject(args[0], true);
+          }
+
+          switch (fn) {
+            // Parse the ColorSpace data to a raw format.
+            case 'setFillColorSpace':
+            case 'setStrokeColorSpace':
+              args = [ColorSpace.parseToIR(args[0], xref, resources)];
+              break;
+            case 'shadingFill':
+              var shadingRes = xref.fetchIfRef(res.get('Shading'));
+              if (!shadingRes)
+                error('No shading resource found');
+
+              var shading = xref.fetchIfRef(shadingRes.get(args[0].name));
+              if (!shading)
+                error('No shading object found');
+
+              var shadingFill = Pattern.parseShading(shading, null, xref, res,
+                                                      null);
+              var patternIR = shadingFill.getIR();
+              args = [patternIR];
+              fn = 'shadingFill';
+              break;
+            case 'setGState':
+              var dictName = args[0];
+              var extGState = xref.fetchIfRef(resources.get('ExtGState'));
+
+              if (!isDict(extGState) || !extGState.has(dictName.name))
+                break;
+
+              var gsState = xref.fetchIfRef(extGState.get(dictName.name));
+
+              // This array holds the converted/processed state data.
+              var gsStateObj = [];
+
+              gsState.forEach(
+                function canvasGraphicsSetGStateForEach(key, value) {
+                  switch (key) {
+                    case 'Type':
+                      break;
+                    case 'LW':
+                    case 'LC':
+                    case 'LJ':
+                    case 'ML':
+                    case 'D':
+                    case 'RI':
+                    case 'FL':
+                      gsStateObj.push([key, value]);
+                      break;
+                    case 'Font':
+                      gsStateObj.push([
+                        'Font',
+                        handleSetFont(null, value[0]),
+                        value[1]
+                      ]);
+                      break;
+                    case 'OP':
+                    case 'op':
+                    case 'OPM':
+                    case 'BG':
+                    case 'BG2':
+                    case 'UCR':
+                    case 'UCR2':
+                    case 'TR':
+                    case 'TR2':
+                    case 'HT':
+                    case 'SM':
+                    case 'SA':
+                    case 'BM':
+                    case 'SMask':
+                    case 'CA':
+                    case 'ca':
+                    case 'AIS':
+                    case 'TK':
+                      TODO('graphic state operator ' + key);
+                      break;
+                    default:
+                      warn('Unknown graphic state operator ' + key);
+                      break;
+                  }
+                }
+              );
+              args = [gsStateObj];
+              break;
+          } // switch
+
+          fnArray.push(fn);
+          argsArray.push(args);
+          args = [];
+        } else if (obj != null) {
+          assertWellFormed(args.length <= 33, 'Too many arguments');
+          args.push(obj);
+        }
+      }
+
+      return {
+        fnArray: fnArray,
+        argsArray: argsArray
+      };
+    },
+
+    extractEncoding: function partialEvaluatorExtractEncoding(dict,
+                                                              xref,
+                                                              properties) {
+      var type = properties.type, encoding;
+      if (properties.composite) {
+        var defaultWidth = xref.fetchIfRef(dict.get('DW')) || 1000;
+        properties.defaultWidth = defaultWidth;
+
+        var glyphsWidths = {};
+        var widths = xref.fetchIfRef(dict.get('W'));
+        if (widths) {
+          var start = 0, end = 0;
+          for (var i = 0; i < widths.length; i++) {
+            var code = widths[i];
+            if (isArray(code)) {
+              for (var j = 0; j < code.length; j++)
+                glyphsWidths[start++] = code[j];
+              start = 0;
+            } else if (start) {
+              var width = widths[++i];
+              for (var j = start; j <= code; j++)
+                glyphsWidths[j] = width;
+              start = 0;
+            } else {
+              start = code;
+            }
+          }
+        }
+        properties.widths = glyphsWidths;
+
+        // Glyph ids are big-endian 2-byte values
+        encoding = properties.encoding;
+
+        // CIDSystemInfo might help to match width and glyphs
+        var cidSystemInfo = dict.get('CIDSystemInfo');
+        if (isDict(cidSystemInfo)) {
+          properties.cidSystemInfo = {
+            registry: cidSystemInfo.get('Registry'),
+            ordering: cidSystemInfo.get('Ordering'),
+            supplement: cidSystemInfo.get('Supplement')
+          };
+        }
+
+        var cidToGidMap = dict.get('CIDToGIDMap');
+        if (!cidToGidMap || !isRef(cidToGidMap)) {
+
+
+          return Object.create(GlyphsUnicode);
+        }
+
+        // Extract the encoding from the CIDToGIDMap
+        var glyphsStream = xref.fetchIfRef(cidToGidMap);
+        var glyphsData = glyphsStream.getBytes(0);
+
+        // Set encoding 0 to later verify the font has an encoding
+        encoding[0] = { unicode: 0, width: 0 };
+        for (var j = 0; j < glyphsData.length; j++) {
+          var glyphID = (glyphsData[j++] << 8) | glyphsData[j];
+          if (glyphID == 0)
+            continue;
+
+          var code = j >> 1;
+          var width = glyphsWidths[code];
+          encoding[code] = {
+            unicode: glyphID,
+            width: isNum(width) ? width : defaultWidth
+          };
+        }
+
+        return Object.create(GlyphsUnicode);
+      }
+
+      var differences = properties.differences;
+      var map = properties.encoding;
+      var baseEncoding = null;
+      if (dict.has('Encoding')) {
+        encoding = xref.fetchIfRef(dict.get('Encoding'));
+        if (isDict(encoding)) {
+          var baseName = encoding.get('BaseEncoding');
+          if (baseName)
+            baseEncoding = Encodings[baseName.name].slice();
+
+          // Load the differences between the base and original
+          if (encoding.has('Differences')) {
+            var diffEncoding = encoding.get('Differences');
+            var index = 0;
+            for (var j = 0; j < diffEncoding.length; j++) {
+              var data = diffEncoding[j];
+              if (isNum(data))
+                index = data;
+              else
+                differences[index++] = data.name;
+            }
+          }
+        } else if (isName(encoding)) {
+          baseEncoding = Encodings[encoding.name].slice();
+        } else {
+          error('Encoding is not a Name nor a Dict');
+        }
+      }
+
+      if (!baseEncoding) {
+        switch (type) {
+          case 'TrueType':
+            baseEncoding = Encodings.WinAnsiEncoding.slice();
+            break;
+          case 'Type1':
+          case 'Type3':
+            baseEncoding = Encodings.StandardEncoding.slice();
+            break;
+          default:
+            warn('Unknown type of font: ' + type);
+            baseEncoding = [];
+            break;
+        }
+      }
+
+      // merge in the differences
+      var firstChar = properties.firstChar;
+      var lastChar = properties.lastChar;
+      var widths = properties.widths || [];
+      var glyphs = {};
+      for (var i = firstChar; i <= lastChar; i++) {
+        var glyph = differences[i];
+        var replaceGlyph = true;
+        if (!glyph) {
+          glyph = baseEncoding[i] || i;
+          replaceGlyph = false;
+        }
+        var index = GlyphsUnicode[glyph] || i;
+        var width = widths[i] || widths[glyph];
+        map[i] = {
+          unicode: index,
+          width: isNum(width) ? width : properties.defaultWidth
+        };
+
+        if (replaceGlyph || !glyphs[glyph])
+          glyphs[glyph] = map[i];
+        if (replaceGlyph || !glyphs[index])
+          glyphs[index] = map[i];
+
+        // If there is no file, the character mapping can't be modified
+        // but this is unlikely that there is any standard encoding with
+        // chars below 0x1f, so that's fine.
+        if (!properties.file)
+          continue;
+
+        if (index <= 0x1f || (index >= 127 && index <= 255))
+          map[i].unicode += kCmapGlyphOffset;
+      }
+
+      if (type == 'TrueType' && dict.has('ToUnicode') && differences) {
+        var cmapObj = dict.get('ToUnicode');
+        if (isRef(cmapObj)) {
+          cmapObj = xref.fetch(cmapObj);
+        }
+        if (isName(cmapObj)) {
+          error('ToUnicode file cmap translation not implemented');
+        } else if (isStream(cmapObj)) {
+          var tokens = [];
+          var token = '';
+          var beginArrayToken = {};
+
+          var cmap = cmapObj.getBytes(cmapObj.length);
+          for (var i = 0; i < cmap.length; i++) {
+            var byte = cmap[i];
+            if (byte == 0x20 || byte == 0x0D || byte == 0x0A ||
+                byte == 0x3C || byte == 0x5B || byte == 0x5D) {
+              switch (token) {
+                case 'usecmap':
+                  error('usecmap is not implemented');
+                  break;
+
+                case 'beginbfchar':
+                case 'beginbfrange':
+                case 'begincidchar':
+                case 'begincidrange':
+                  token = '';
+                  tokens = [];
+                  break;
+
+                case 'endcidrange':
+                case 'endbfrange':
+                  for (var j = 0; j < tokens.length; j += 3) {
+                    var startRange = tokens[j];
+                    var endRange = tokens[j + 1];
+                    var code = tokens[j + 2];
+                    while (startRange < endRange) {
+                      var mapping = map[startRange] || {};
+                      mapping.unicode = code++;
+                      map[startRange] = mapping;
+                      ++startRange;
+                    }
+                  }
+                  break;
+
+                case 'endcidchar':
+                case 'endbfchar':
+                  for (var j = 0; j < tokens.length; j += 2) {
+                    var index = tokens[j];
+                    var code = tokens[j + 1];
+                    var mapping = map[index] || {};
+                    mapping.unicode = code;
+                    map[index] = mapping;
+                  }
+                  break;
+
+                case '':
+                  break;
+
+                default:
+                  if (token[0] >= '0' && token[0] <= '9')
+                    token = parseInt(token, 10); // a number
+                  tokens.push(token);
+                  token = '';
+              }
+              switch (byte) {
+                case 0x5B:
+                  // begin list parsing
+                  tokens.push(beginArrayToken);
+                  break;
+                case 0x5D:
+                  // collect array items
+                  var items = [], item;
+                  while (tokens.length &&
+                         (item = tokens.pop()) != beginArrayToken)
+                    items.unshift(item);
+                  tokens.push(items);
+                  break;
+              }
+            } else if (byte == 0x3E) {
+              if (token.length) {
+                // parsing hex number
+                tokens.push(parseInt(token, 16));
+                token = '';
+              }
+            } else {
+              token += String.fromCharCode(byte);
+            }
+          }
+        }
+      }
+      return glyphs;
+    },
+
+    getBaseFontMetricsAndMap: function getBaseFontMetricsAndMap(name) {
+      var map = {};
+      if (/^Symbol(-?(Bold|Italic))*$/.test(name)) {
+        // special case for symbols
+        var encoding = Encodings.symbolsEncoding.slice();
+        for (var i = 0, n = encoding.length, j; i < n; i++) {
+          if (!(j = encoding[i]))
+            continue;
+          map[i] = GlyphsUnicode[j] || 0;
+        }
+      }
+
+      var defaultWidth = 0;
+      var widths = Metrics[stdFontMap[name] || name];
+      if (isNum(widths)) {
+        defaultWidth = widths;
+        widths = null;
+      }
+
+      return {
+        defaultWidth: defaultWidth,
+        widths: widths || [],
+        map: map
+      };
+    },
+
+    translateFont: function partialEvaluatorTranslateFont(dict, xref, resources,
+                                    queue, handler, uniquePrefix, dependency) {
+      var baseDict = dict;
+      var type = dict.get('Subtype');
+      assertWellFormed(isName(type), 'invalid font Subtype');
+
+      var composite = false;
+      if (type.name == 'Type0') {
+        // If font is a composite
+        //  - get the descendant font
+        //  - set the type according to the descendant font
+        //  - get the FontDescriptor from the descendant font
+        var df = dict.get('DescendantFonts');
+        if (!df)
+          return null;
+
+        if (isRef(df))
+          df = xref.fetch(df);
+
+        dict = xref.fetchIfRef(isRef(df) ? df : df[0]);
+
+        type = dict.get('Subtype');
+        assertWellFormed(isName(type), 'invalid font Subtype');
+        composite = true;
+      }
+
+      var descriptor = xref.fetchIfRef(dict.get('FontDescriptor'));
+      if (!descriptor) {
+        if (type.name == 'Type3') {
+          // FontDescriptor is only required for Type3 fonts when the document
+          // is a tagged pdf. Create a barbebones one to get by.
+          descriptor = new Dict();
+          descriptor.set('FontName', new Name(type.name));
+        } else {
+          // Before PDF 1.5 if the font was one of the base 14 fonts, having a
+          // FontDescriptor was not required.
+          // This case is here for compatibility.
+          var baseFontName = dict.get('BaseFont');
+          if (!isName(baseFontName))
+            return null;
+
+          // Using base font name as a font name.
+          baseFontName = baseFontName.name.replace(/[,_]/g, '-');
+          var metricsAndMap = this.getBaseFontMetricsAndMap(baseFontName);
+
+          var properties = {
+            type: type.name,
+            encoding: metricsAndMap.map,
+            differences: [],
+            widths: metricsAndMap.widths,
+            defaultWidth: metricsAndMap.defaultWidth,
+            firstChar: 0,
+            lastChar: 256
+          };
+          this.extractEncoding(dict, xref, properties);
+
+          return {
+            name: baseFontName,
+            dict: baseDict,
+            properties: properties
+          };
+        }
+
+      }
+
+      // According to the spec if 'FontDescriptor' is declared, 'FirstChar',
+      // 'LastChar' and 'Widths' should exists too, but some PDF encoders seems
+      // to ignore this rule when a variant of a standart font is used.
+      // TODO Fill the width array depending on which of the base font this is
+      // a variant.
+      var firstChar = xref.fetchIfRef(dict.get('FirstChar')) || 0;
+      var lastChar = xref.fetchIfRef(dict.get('LastChar')) || 256;
+      var defaultWidth = 0;
+      var glyphWidths = {};
+      var encoding = {};
+      var widths = xref.fetchIfRef(dict.get('Widths'));
+      if (widths) {
+        for (var i = 0, j = firstChar; i < widths.length; i++, j++)
+          glyphWidths[j] = widths[i];
+        defaultWidth = parseFloat(descriptor.get('MissingWidth')) || 0;
+      } else {
+        // Trying get the BaseFont metrics (see comment above).
+        var baseFontName = dict.get('BaseFont');
+        if (isName(baseFontName)) {
+          var metricsAndMap = this.getBaseFontMetricsAndMap(baseFontName.name);
+
+          glyphWidths = metricsAndMap.widths;
+          defaultWidth = metricsAndMap.defaultWidth;
+          encoding = metricsAndMap.map;
+        }
+      }
+
+      var fontName = xref.fetchIfRef(descriptor.get('FontName'));
+      assertWellFormed(isName(fontName), 'invalid font name');
+
+      var fontFile = descriptor.get('FontFile', 'FontFile2', 'FontFile3');
+      if (fontFile) {
+        fontFile = xref.fetchIfRef(fontFile);
+        if (fontFile.dict) {
+          var subtype = fontFile.dict.get('Subtype');
+          if (subtype)
+            subtype = subtype.name;
+
+          var length1 = fontFile.dict.get('Length1');
+          if (!isInt(length1))
+            length1 = xref.fetchIfRef(length1);
+
+          var length2 = fontFile.dict.get('Length2');
+          if (!isInt(length2))
+            length2 = xref.fetchIfRef(length2);
+        }
+      }
+
+      var properties = {
+        type: type.name,
+        subtype: subtype,
+        file: fontFile,
+        length1: length1,
+        length2: length2,
+        composite: composite,
+        fixedPitch: false,
+        fontMatrix: dict.get('FontMatrix') || IDENTITY_MATRIX,
+        firstChar: firstChar || 0,
+        lastChar: lastChar || 256,
+        bbox: descriptor.get('FontBBox'),
+        ascent: descriptor.get('Ascent'),
+        descent: descriptor.get('Descent'),
+        xHeight: descriptor.get('XHeight'),
+        capHeight: descriptor.get('CapHeight'),
+        defaultWidth: defaultWidth,
+        flags: descriptor.get('Flags'),
+        italicAngle: descriptor.get('ItalicAngle'),
+        differences: [],
+        widths: glyphWidths,
+        encoding: encoding,
+        coded: false
+      };
+      properties.glyphs = this.extractEncoding(dict, xref, properties);
+
+      if (type.name === 'Type3') {
+        properties.coded = true;
+        var charProcs = xref.fetchIfRef(dict.get('CharProcs'));
+        var fontResources = xref.fetchIfRef(dict.get('Resources')) || resources;
+        properties.resources = fontResources;
+        for (var key in charProcs.map) {
+          var glyphStream = xref.fetchIfRef(charProcs.map[key]);
+          var queueObj = {};
+          properties.glyphs[key].IRQueue = this.getIRQueue(glyphStream,
+                                                           fontResources,
+                                                           queueObj,
+                                                           dependency);
+        }
+      }
+
+      return {
+        name: fontName.name,
+        dict: baseDict,
+        file: fontFile,
+        properties: properties
+      };
+    }
+  };
+
+  return constructor;
+})();
+
+var EvalState = (function evalState() {
+  function constructor() {
+    // Are soft masks and alpha values shapes or opacities?
+    this.alphaIsShape = false;
+    this.fontSize = 0;
+    this.textMatrix = IDENTITY_MATRIX;
+    this.leading = 0;
+    // Start of text line (in text coordinates)
+    this.lineX = 0;
+    this.lineY = 0;
+    // Character and word spacing
+    this.charSpacing = 0;
+    this.wordSpacing = 0;
+    this.textHScale = 1;
+    // Color spaces
+    this.fillColorSpace = null;
+    this.strokeColorSpace = null;
+  }
+  constructor.prototype = {
+  };
+  return constructor;
+})();
+

src/fonts.js

@@ -2,6 +2,7 @@
 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
 
 'use strict';
+
 var isWorker = (typeof window == 'undefined');
 
 /**
@@ -20,6 +21,271 @@ var kPDFGlyphSpaceUnits = 1000;
 // Until hinting is fully supported this constant can be used
 var kHintingEnabled = false;
 
+var Encodings = {
+  get ExpertEncoding() {
+    return shadow(this, 'ExpertEncoding', ['', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', 'space', 'exclamsmall', 'Hungarumlautsmall', '',
+      'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', 'Acutesmall',
+      'parenleftsuperior', 'parenrightsuperior', 'twodotenleader',
+      'onedotenleader', 'comma', 'hyphen', 'period', 'fraction',
+      'zerooldstyle', 'oneoldstyle', 'twooldstyle', 'threeoldstyle',
+      'fouroldstyle', 'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle',
+      'eightoldstyle', 'nineoldstyle', 'colon', 'semicolon', 'commasuperior',
+      'threequartersemdash', 'periodsuperior', 'questionsmall', '',
+      'asuperior', 'bsuperior', 'centsuperior', 'dsuperior', 'esuperior', '',
+      '', 'isuperior', '', '', 'lsuperior', 'msuperior', 'nsuperior',
+      'osuperior', '', '', 'rsuperior', 'ssuperior', 'tsuperior', '', 'ff',
+      'fi', 'fl', 'ffi', 'ffl', 'parenleftinferior', '', 'parenrightinferior',
+      'Circumflexsmall', 'hyphensuperior', 'Gravesmall', 'Asmall', 'Bsmall',
+      'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', 'Hsmall', 'Ismall',
+      'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', 'Osmall', 'Psmall',
+      'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', 'Vsmall', 'Wsmall',
+      'Xsmall', 'Ysmall', 'Zsmall', 'colonmonetary', 'onefitted', 'rupiah',
+      'Tildesmall', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', 'exclamdownsmall', 'centoldstyle', 'Lslashsmall', '', '',
+      'Scaronsmall', 'Zcaronsmall', 'Dieresissmall', 'Brevesmall',
+      'Caronsmall', '', 'Dotaccentsmall', '', '', 'Macronsmall', '', '',
+      'figuredash', 'hypheninferior', '', '', 'Ogoneksmall', 'Ringsmall',
+      'Cedillasmall', '', '', '', 'onequarter', 'onehalf', 'threequarters',
+      'questiondownsmall', 'oneeighth', 'threeeighths', 'fiveeighths',
+      'seveneighths', 'onethird', 'twothirds', '', '', 'zerosuperior',
+      'onesuperior', 'twosuperior', 'threesuperior', 'foursuperior',
+      'fivesuperior', 'sixsuperior', 'sevensuperior', 'eightsuperior',
+      'ninesuperior', 'zeroinferior', 'oneinferior', 'twoinferior',
+      'threeinferior', 'fourinferior', 'fiveinferior', 'sixinferior',
+      'seveninferior', 'eightinferior', 'nineinferior', 'centinferior',
+      'dollarinferior', 'periodinferior', 'commainferior', 'Agravesmall',
+      'Aacutesmall', 'Acircumflexsmall', 'Atildesmall', 'Adieresissmall',
+      'Aringsmall', 'AEsmall', 'Ccedillasmall', 'Egravesmall', 'Eacutesmall',
+      'Ecircumflexsmall', 'Edieresissmall', 'Igravesmall', 'Iacutesmall',
+      'Icircumflexsmall', 'Idieresissmall', 'Ethsmall', 'Ntildesmall',
+      'Ogravesmall', 'Oacutesmall', 'Ocircumflexsmall', 'Otildesmall',
+      'Odieresissmall', 'OEsmall', 'Oslashsmall', 'Ugravesmall', 'Uacutesmall',
+      'Ucircumflexsmall', 'Udieresissmall', 'Yacutesmall', 'Thornsmall',
+      'Ydieresissmall'
+    ]);
+  },
+  get MacExpertEncoding() {
+    return shadow(this, 'MacExpertEncoding', ['', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', 'space', 'exclamsmall', 'Hungarumlautsmall',
+      'centoldstyle', 'dollaroldstyle', 'dollarsuperior', 'ampersandsmall',
+      'Acutesmall', 'parenleftsuperior', 'parenrightsuperior',
+      'twodotenleader', 'onedotenleader', 'comma', 'hyphen', 'period',
+      'fraction', 'zerooldstyle', 'oneoldstyle', 'twooldstyle',
+      'threeoldstyle', 'fouroldstyle', 'fiveoldstyle', 'sixoldstyle',
+      'sevenoldstyle', 'eightoldstyle', 'nineoldstyle', 'colon', 'semicolon',
+      '', 'threequartersemdash', '', 'questionsmall', '', '', '', '',
+      'Ethsmall', '', '', 'onequarter', 'onehalf', 'threequarters',
+      'oneeighth', 'threeeighths', 'fiveeighths', 'seveneighths', 'onethird',
+      'twothirds', '', '', '', '', '', '', 'ff', 'fi', 'fl', 'ffi', 'ffl',
+      'parenleftinferior', '', 'parenrightinferior', 'Circumflexsmall',
+      'hypheninferior', 'Gravesmall', 'Asmall', 'Bsmall', 'Csmall', 'Dsmall',
+      'Esmall', 'Fsmall', 'Gsmall', 'Hsmall', 'Ismall', 'Jsmall', 'Ksmall',
+      'Lsmall', 'Msmall', 'Nsmall', 'Osmall', 'Psmall', 'Qsmall', 'Rsmall',
+      'Ssmall', 'Tsmall', 'Usmall', 'Vsmall', 'Wsmall', 'Xsmall', 'Ysmall',
+      'Zsmall', 'colonmonetary', 'onefitted', 'rupiah', 'Tildesmall', '', '',
+      'asuperior', 'centsuperior', '', '', '', '', 'Aacutesmall',
+      'Agravesmall', 'Acircumflexsmall', 'Adieresissmall', 'Atildesmall',
+      'Aringsmall', 'Ccedillasmall', 'Eacutesmall', 'Egravesmall',
+      'Ecircumflexsmall', 'Edieresissmall', 'Iacutesmall', 'Igravesmall',
+      'Icircumflexsmall', 'Idieresissmall', 'Ntildesmall', 'Oacutesmall',
+      'Ogravesmall', 'Ocircumflexsmall', 'Odieresissmall', 'Otildesmall',
+      'Uacutesmall', 'Ugravesmall', 'Ucircumflexsmall', 'Udieresissmall', '',
+      'eightsuperior', 'fourinferior', 'threeinferior', 'sixinferior',
+      'eightinferior', 'seveninferior', 'Scaronsmall', '', 'centinferior',
+      'twoinferior', '', 'Dieresissmall', '', 'Caronsmall', 'osuperior',
+      'fiveinferior', '', 'commainferior', 'periodinferior', 'Yacutesmall', '',
+      'dollarinferior', '', 'Thornsmall', '', 'nineinferior', 'zeroinferior',
+      'Zcaronsmall', 'AEsmall', 'Oslashsmall', 'questiondownsmall',
+      'oneinferior', 'Lslashsmall', '', '', '', '', '', '', 'Cedillasmall', '',
+      '', '', '', '', 'OEsmall', 'figuredash', 'hyphensuperior', '', '', '',
+      '', 'exclamdownsmall', '', 'Ydieresissmall', '', 'onesuperior',
+      'twosuperior', 'threesuperior', 'foursuperior', 'fivesuperior',
+      'sixsuperior', 'sevensuperior', 'ninesuperior', 'zerosuperior', '',
+      'esuperior', 'rsuperior', 'tsuperior', '', '', 'isuperior', 'ssuperior',
+      'dsuperior', '', '', '', '', '', 'lsuperior', 'Ogoneksmall',
+      'Brevesmall', 'Macronsmall', 'bsuperior', 'nsuperior', 'msuperior',
+      'commasuperior', 'periodsuperior', 'Dotaccentsmall', 'Ringsmall'
+    ]);
+  },
+  get MacRomanEncoding() {
+    return shadow(this, 'MacRomanEncoding', ['', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', 'space', 'exclam', 'quotedbl', 'numbersign',
+      'dollar', 'percent', 'ampersand', 'quotesingle', 'parenleft',
+      'parenright', 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash',
+      'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
+      'nine', 'colon', 'semicolon', 'less', 'equal', 'greater', 'question',
+      'at', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+      'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+      'bracketleft', 'backslash', 'bracketright', 'asciicircum', 'underscore',
+      'grave', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+      'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+      'braceleft', 'bar', 'braceright', 'asciitilde', '', 'Adieresis', 'Aring',
+      'Ccedilla', 'Eacute', 'Ntilde', 'Odieresis', 'Udieresis', 'aacute',
+      'agrave', 'acircumflex', 'adieresis', 'atilde', 'aring', 'ccedilla',
+      'eacute', 'egrave', 'ecircumflex', 'edieresis', 'iacute', 'igrave',
+      'icircumflex', 'idieresis', 'ntilde', 'oacute', 'ograve', 'ocircumflex',
+      'odieresis', 'otilde', 'uacute', 'ugrave', 'ucircumflex', 'udieresis',
+      'dagger', 'degree', 'cent', 'sterling', 'section', 'bullet', 'paragraph',
+      'germandbls', 'registered', 'copyright', 'trademark', 'acute',
+      'dieresis', 'notequal', 'AE', 'Oslash', 'infinity', 'plusminus',
+      'lessequal', 'greaterequal', 'yen', 'mu', 'partialdiff', 'summation',
+      'product', 'pi', 'integral', 'ordfeminine', 'ordmasculine', 'Omega',
+      'ae', 'oslash', 'questiondown', 'exclamdown', 'logicalnot', 'radical',
+      'florin', 'approxequal', 'Delta', 'guillemotleft', 'guillemotright',
+      'ellipsis', 'space', 'Agrave', 'Atilde', 'Otilde', 'OE', 'oe', 'endash',
+      'emdash', 'quotedblleft', 'quotedblright', 'quoteleft', 'quoteright',
+      'divide', 'lozenge', 'ydieresis', 'Ydieresis', 'fraction', 'currency',
+      'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'daggerdbl',
+      'periodcentered', 'quotesinglbase', 'quotedblbase', 'perthousand',
+      'Acircumflex', 'Ecircumflex', 'Aacute', 'Edieresis', 'Egrave', 'Iacute',
+      'Icircumflex', 'Idieresis', 'Igrave', 'Oacute', 'Ocircumflex', 'apple',
+      'Ograve', 'Uacute', 'Ucircumflex', 'Ugrave', 'dotlessi', 'circumflex',
+      'tilde', 'macron', 'breve', 'dotaccent', 'ring', 'cedilla',
+      'hungarumlaut', 'ogonek', 'caron'
+    ]);
+  },
+  get StandardEncoding() {
+    return shadow(this, 'StandardEncoding', ['', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', 'space', 'exclam', 'quotedbl', 'numbersign',
+      'dollar', 'percent', 'ampersand', 'quoteright', 'parenleft',
+      'parenright', 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash',
+      'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
+      'nine', 'colon', 'semicolon', 'less', 'equal', 'greater', 'question',
+      'at', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+      'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+      'bracketleft', 'backslash', 'bracketright', 'asciicircum', 'underscore',
+      'quoteleft', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
+      'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+      'braceleft', 'bar', 'braceright', 'asciitilde', '', '', 'exclamdown',
+      'cent', 'sterling', 'fraction', 'yen', 'florin', 'section', 'currency',
+      'quotesingle', 'quotedblleft', 'guillemotleft', 'guilsinglleft',
+      'guilsinglright', 'fi', 'fl', '', 'endash', 'dagger', 'daggerdbl',
+      'periodcentered', '', 'paragraph', 'bullet', 'quotesinglbase',
+      'quotedblbase', 'quotedblright', 'guillemotright', 'ellipsis',
+      'perthousand', '', 'questiondown', '', 'grave', 'acute', 'circumflex',
+      'tilde', 'macron', 'breve', 'dotaccent', 'dieresis', '', 'ring',
+      'cedilla', '', 'hungarumlaut', 'ogonek', 'caron', 'emdash', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', 'AE', '',
+      'ordfeminine', '', '', '', '', 'Lslash', 'Oslash', 'OE', 'ordmasculine',
+      '', '', '', '', '', 'ae', '', '', '', 'dotlessi', '', '', 'lslash',
+      'oslash', 'oe', 'germandbls'
+    ]);
+  },
+  get WinAnsiEncoding() {
+    return shadow(this, 'WinAnsiEncoding', ['', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', 'space', 'exclam', 'quotedbl', 'numbersign',
+      'dollar', 'percent', 'ampersand', 'quotesingle', 'parenleft',
+      'parenright', 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash',
+      'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
+      'nine', 'colon', 'semicolon', 'less', 'equal', 'greater', 'question',
+      'at', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+      'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+      'bracketleft', 'backslash', 'bracketright', 'asciicircum', 'underscore',
+      'grave', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+      'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+      'braceleft', 'bar', 'braceright', 'asciitilde', 'bullet', 'Euro',
+      'bullet', 'quotesinglbase', 'florin', 'quotedblbase', 'ellipsis',
+      'dagger', 'daggerdbl', 'circumflex', 'perthousand', 'Scaron',
+      'guilsinglleft', 'OE', 'bullet', 'Zcaron', 'bullet', 'bullet',
+      'quoteleft', 'quoteright', 'quotedblleft', 'quotedblright', 'bullet',
+      'endash', 'emdash', 'tilde', 'trademark', 'scaron', 'guilsinglright',
+      'oe', 'bullet', 'zcaron', 'Ydieresis', 'space', 'exclamdown', 'cent',
+      'sterling', 'currency', 'yen', 'brokenbar', 'section', 'dieresis',
+      'copyright', 'ordfeminine', 'guillemotleft', 'logicalnot', 'hyphen',
+      'registered', 'macron', 'degree', 'plusminus', 'twosuperior',
+      'threesuperior', 'acute', 'mu', 'paragraph', 'periodcentered',
+      'cedilla', 'onesuperior', 'ordmasculine', 'guillemotright', 'onequarter',
+      'onehalf', 'threequarters', 'questiondown', 'Agrave', 'Aacute',
+      'Acircumflex', 'Atilde', 'Adieresis', 'Aring', 'AE', 'Ccedilla',
+      'Egrave', 'Eacute', 'Ecircumflex', 'Edieresis', 'Igrave', 'Iacute',
+      'Icircumflex', 'Idieresis', 'Eth', 'Ntilde', 'Ograve', 'Oacute',
+      'Ocircumflex', 'Otilde', 'Odieresis', 'multiply', 'Oslash', 'Ugrave',
+      'Uacute', 'Ucircumflex', 'Udieresis', 'Yacute', 'Thorn', 'germandbls',
+      'agrave', 'aacute', 'acircumflex', 'atilde', 'adieresis', 'aring', 'ae',
+      'ccedilla', 'egrave', 'eacute', 'ecircumflex', 'edieresis', 'igrave',
+      'iacute', 'icircumflex', 'idieresis', 'eth', 'ntilde', 'ograve',
+      'oacute', 'ocircumflex', 'otilde', 'odieresis', 'divide', 'oslash',
+      'ugrave', 'uacute', 'ucircumflex', 'udieresis', 'yacute', 'thorn',
+      'ydieresis'
+    ]);
+  },
+  get symbolsEncoding() {
+    return shadow(this, 'symbolsEncoding', ['', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', 'space', 'exclam', 'universal', 'numbersign',
+      'existential', 'percent', 'ampersand', 'suchthat', 'parenleft',
+      'parenright', 'asteriskmath', 'plus', 'comma', 'minus', 'period',
+      'slash', 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven',
+      'eight', 'nine', 'colon', 'semicolon', 'less', 'equal', 'greater',
+      'question', 'congruent', 'Alpha', 'Beta', 'Chi', 'Delta', 'Epsilon',
+      'Phi', 'Gamma', 'Eta', 'Iota', 'theta1', 'Kappa', 'Lambda', 'Mu', 'Nu',
+      'Omicron', 'Pi', 'Theta', 'Rho', 'Sigma', 'Tau', 'Upsilon', 'sigma1',
+      'Omega', 'Xi', 'Psi', 'Zeta', 'bracketleft', 'therefore', 'bracketright',
+      'perpendicular', 'underscore', 'radicalex', 'alpha', 'beta', 'chi',
+      'delta', 'epsilon', 'phi', 'gamma', 'eta', 'iota', 'phi1', 'kappa',
+      'lambda', 'mu', 'nu', 'omicron', 'pi', 'theta', 'rho', 'sigma', 'tau',
+      'upsilon', 'omega1', 'omega', 'xi', 'psi', 'zeta', 'braceleft', 'bar',
+      'braceright', 'similar', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', 'Euro', 'Upsilon1', 'minute', 'lessequal', 'fraction',
+      'infinity', 'florin', 'club', 'diamond', 'heart', 'spade', 'arrowboth',
+      'arrowleft', 'arrowup', 'arrowright', 'arrowdown', 'degree', 'plusminus',
+      'second', 'greaterequal', 'multiply', 'proportional', 'partialdiff',
+      'bullet', 'divide', 'notequal', 'equivalence', 'approxequal', 'ellipsis',
+      'arrowvertex', 'arrowhorizex', 'carriagereturn', 'aleph', 'Ifraktur',
+      'Rfraktur', 'weierstrass', 'circlemultiply', 'circleplus', 'emptyset',
+      'intersection', 'union', 'propersuperset', 'reflexsuperset', 'notsubset',
+      'propersubset', 'reflexsubset', 'element', 'notelement', 'angle',
+      'gradient', 'registerserif', 'copyrightserif', 'trademarkserif',
+      'product', 'radical', 'dotmath', 'logicalnot', 'logicaland', 'logicalor',
+      'arrowdblboth', 'arrowdblleft', 'arrowdblup', 'arrowdblright',
+      'arrowdbldown', 'lozenge', 'angleleft', 'registersans', 'copyrightsans',
+      'trademarksans', 'summation', 'parenlefttp', 'parenleftex',
+      'parenleftbt', 'bracketlefttp', 'bracketleftex', 'bracketleftbt',
+      'bracelefttp', 'braceleftmid', 'braceleftbt', 'braceex', '',
+      'angleright', 'integral', 'integraltp', 'integralex', 'integralbt',
+      'parenrighttp', 'parenrightex', 'parenrightbt', 'bracketrighttp',
+      'bracketrightex', 'bracketrightbt', 'bracerighttp', 'bracerightmid',
+      'bracerightbt'
+    ]);
+  },
+  get zapfDingbatsEncoding() {
+    return shadow(this, 'zapfDingbatsEncoding', ['', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', 'space', 'a1', 'a2', 'a202', 'a3', 'a4',
+      'a5', 'a119', 'a118', 'a117', 'a11', 'a12', 'a13', 'a14', 'a15', 'a16',
+      'a105', 'a17', 'a18', 'a19', 'a20', 'a21', 'a22', 'a23', 'a24', 'a25',
+      'a26', 'a27', 'a28', 'a6', 'a7', 'a8', 'a9', 'a10', 'a29', 'a30', 'a31',
+      'a32', 'a33', 'a34', 'a35', 'a36', 'a37', 'a38', 'a39', 'a40', 'a41',
+      'a42', 'a43', 'a44', 'a45', 'a46', 'a47', 'a48', 'a49', 'a50', 'a51',
+      'a52', 'a53', 'a54', 'a55', 'a56', 'a57', 'a58', 'a59', 'a60', 'a61',
+      'a62', 'a63', 'a64', 'a65', 'a66', 'a67', 'a68', 'a69', 'a70', 'a71',
+      'a72', 'a73', 'a74', 'a203', 'a75', 'a204', 'a76', 'a77', 'a78', 'a79',
+      'a81', 'a82', 'a83', 'a84', 'a97', 'a98', 'a99', 'a100', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+      '', '', '', '', '', '', '', '', '', '', '', '', 'a101', 'a102', 'a103',
+      'a104', 'a106', 'a107', 'a108', 'a112', 'a111', 'a110', 'a109', 'a120',
+      'a121', 'a122', 'a123', 'a124', 'a125', 'a126', 'a127', 'a128', 'a129',
+      'a130', 'a131', 'a132', 'a133', 'a134', 'a135', 'a136', 'a137', 'a138',
+      'a139', 'a140', 'a141', 'a142', 'a143', 'a144', 'a145', 'a146', 'a147',
+      'a148', 'a149', 'a150', 'a151', 'a152', 'a153', 'a154', 'a155', 'a156',
+      'a157', 'a158', 'a159', 'a160', 'a161', 'a163', 'a164', 'a196', 'a165',
+      'a192', 'a166', 'a167', 'a168', 'a169', 'a170', 'a171', 'a172', 'a173',
+      'a162', 'a174', 'a175', 'a176', 'a177', 'a178', 'a179', 'a193', 'a180',
+      'a199', 'a181', 'a200', 'a182', '', 'a201', 'a183', 'a184', 'a197',
+      'a185', 'a194', 'a198', 'a186', 'a195', 'a187', 'a188', 'a189', 'a190',
+      'a191'
+    ]);
+  }
+};
+
 /**
  * Hold a map of decoded fonts and of the standard fourteen Type1
  * fonts and their acronyms.
@@ -3006,3 +3272,4 @@ var Type2CFF = (function type2CFF() {
 
   return constructor;
 })();
+

src/function.js

@@ -0,0 +1,307 @@
+/* -*- 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 PDFFunction = (function() {
+  var CONSTRUCT_SAMPLED = 0;
+  var CONSTRUCT_INTERPOLATED = 2;
+  var CONSTRUCT_STICHED = 3;
+  var CONSTRUCT_POSTSCRIPT = 4;
+
+  return {
+    getSampleArray: function(size, outputSize, bps, str) {
+      var length = 1;
+      for (var i = 0; i < size.length; i++)
+        length *= size[i];
+      length *= outputSize;
+
+      var array = [];
+      var codeSize = 0;
+      var codeBuf = 0;
+
+      var strBytes = str.getBytes((length * bps + 7) / 8);
+      var strIdx = 0;
+      for (var i = 0; i < length; i++) {
+        while (codeSize < bps) {
+          codeBuf <<= 8;
+          codeBuf |= strBytes[strIdx++];
+          codeSize += 8;
+        }
+        codeSize -= bps;
+        array.push(codeBuf >> codeSize);
+        codeBuf &= (1 << codeSize) - 1;
+      }
+      return array;
+    },
+
+    getIR: function(xref, fn) {
+      var dict = fn.dict;
+      if (!dict)
+        dict = fn;
+
+      var types = [this.constructSampled,
+                   null,
+                   this.constructInterpolated,
+                   this.constructStiched,
+                   this.constructPostScript];
+
+      var typeNum = dict.get('FunctionType');
+      var typeFn = types[typeNum];
+      if (!typeFn)
+        error('Unknown type of function');
+
+      return typeFn.call(this, fn, dict, xref);
+    },
+
+    fromIR: function(IR) {
+      var type = IR[0];
+      switch (type) {
+        case CONSTRUCT_SAMPLED:
+          return this.constructSampledFromIR(IR);
+        case CONSTRUCT_INTERPOLATED:
+          return this.constructInterpolatedFromIR(IR);
+        case CONSTRUCT_STICHED:
+          return this.constructStichedFromIR(IR);
+        case CONSTRUCT_POSTSCRIPT:
+        default:
+          return this.constructPostScriptFromIR(IR);
+      }
+    },
+
+    parse: function(xref, fn) {
+      var IR = this.getIR(xref, fn);
+      return this.fromIR(IR);
+    },
+
+    constructSampled: function(str, dict) {
+      var domain = dict.get('Domain');
+      var range = dict.get('Range');
+
+      if (!domain || !range)
+        error('No domain or range');
+
+      var inputSize = domain.length / 2;
+      var outputSize = range.length / 2;
+
+      if (inputSize != 1)
+        error('No support for multi-variable inputs to functions: ' +
+              inputSize);
+
+      var size = dict.get('Size');
+      var bps = dict.get('BitsPerSample');
+      var order = dict.get('Order');
+      if (!order)
+        order = 1;
+      if (order !== 1)
+        error('No support for cubic spline interpolation: ' + order);
+
+      var encode = dict.get('Encode');
+      if (!encode) {
+        encode = [];
+        for (var i = 0; i < inputSize; ++i) {
+          encode.push(0);
+          encode.push(size[i] - 1);
+        }
+      }
+      var decode = dict.get('Decode');
+      if (!decode)
+        decode = range;
+
+      var samples = this.getSampleArray(size, outputSize, bps, str);
+
+      return [
+        CONSTRUCT_SAMPLED, inputSize, domain, encode, decode, samples, size,
+        outputSize, bps, range
+      ];
+    },
+
+    constructSampledFromIR: function(IR) {
+      var inputSize = IR[1];
+      var domain = IR[2];
+      var encode = IR[3];
+      var decode = IR[4];
+      var samples = IR[5];
+      var size = IR[6];
+      var outputSize = IR[7];
+      var bps = IR[8];
+      var range = IR[9];
+
+      return function(args) {
+        var clip = function(v, min, max) {
+          if (v > max)
+            v = max;
+          else if (v < min)
+            v = min;
+          return v;
+        };
+
+        if (inputSize != args.length)
+          error('Incorrect number of arguments: ' + inputSize + ' != ' +
+                args.length);
+
+        for (var i = 0; i < inputSize; i++) {
+          var i2 = i * 2;
+
+          // clip to the domain
+          var v = clip(args[i], domain[i2], domain[i2 + 1]);
+
+          // encode
+          v = encode[i2] + ((v - domain[i2]) *
+                            (encode[i2 + 1] - encode[i2]) /
+                            (domain[i2 + 1] - domain[i2]));
+
+          // clip to the size
+          args[i] = clip(v, 0, size[i] - 1);
+        }
+
+        // interpolate to table
+        TODO('Multi-dimensional interpolation');
+        var floor = Math.floor(args[0]);
+        var ceil = Math.ceil(args[0]);
+        var scale = args[0] - floor;
+
+        floor *= outputSize;
+        ceil *= outputSize;
+
+        var output = [], v = 0;
+        for (var i = 0; i < outputSize; ++i) {
+          if (ceil == floor) {
+            v = samples[ceil + i];
+          } else {
+            var low = samples[floor + i];
+            var high = samples[ceil + i];
+            v = low * scale + high * (1 - scale);
+          }
+
+          var i2 = i * 2;
+          // decode
+          v = decode[i2] + (v * (decode[i2 + 1] - decode[i2]) /
+                            ((1 << bps) - 1));
+
+          // clip to the domain
+          output.push(clip(v, range[i2], range[i2 + 1]));
+        }
+
+        return output;
+      }
+    },
+
+    constructInterpolated:
+    function pdfFunctionConstructInterpolated(str, dict) {
+      var c0 = dict.get('C0') || [0];
+      var c1 = dict.get('C1') || [1];
+      var n = dict.get('N');
+
+      if (!isArray(c0) || !isArray(c1))
+        error('Illegal dictionary for interpolated function');
+
+      var length = c0.length;
+      var diff = [];
+      for (var i = 0; i < length; ++i)
+        diff.push(c1[i] - c0[i]);
+
+      return [CONSTRUCT_INTERPOLATED, c0, diff, n];
+    },
+
+    constructInterpolatedFromIR:
+    function pdfFunctionconstructInterpolatedFromIR(IR) {
+      var c0 = IR[1];
+      var diff = IR[2];
+      var n = IR[3];
+
+      var length = diff.length;
+
+      return function(args) {
+        var x = n == 1 ? args[0] : Math.pow(args[0], n);
+
+        var out = [];
+        for (var j = 0; j < length; ++j)
+          out.push(c0[j] + (x * diff[j]));
+
+        return out;
+
+      }
+    },
+
+    constructStiched: function pdfFunctionConstructStiched(fn, dict, xref) {
+      var domain = dict.get('Domain');
+      var range = dict.get('Range');
+
+      if (!domain)
+        error('No domain');
+
+      var inputSize = domain.length / 2;
+      if (inputSize != 1)
+        error('Bad domain for stiched function');
+
+      var fnRefs = dict.get('Functions');
+      var fns = [];
+      for (var i = 0, ii = fnRefs.length; i < ii; ++i)
+        fns.push(PDFFunction.getIR(xref, xref.fetchIfRef(fnRefs[i])));
+
+      var bounds = dict.get('Bounds');
+      var encode = dict.get('Encode');
+
+      return [CONSTRUCT_STICHED, domain, bounds, encode, fns];
+    },
+
+    constructStichedFromIR: function pdfFunctionConstructStichedFromIR(IR) {
+      var domain = IR[1];
+      var bounds = IR[2];
+      var encode = IR[3];
+      var fnsIR = IR[4];
+      var fns = [];
+
+      for (var i = 0; i < fnsIR.length; i++) {
+        fns.push(PDFFunction.fromIR(fnsIR[i]));
+      }
+
+      return function(args) {
+        var clip = function(v, min, max) {
+          if (v > max)
+            v = max;
+          else if (v < min)
+            v = min;
+          return v;
+        };
+
+        // clip to domain
+        var v = clip(args[0], domain[0], domain[1]);
+        // calulate which bound the value is in
+        for (var i = 0, ii = bounds.length; i < ii; ++i) {
+          if (v < bounds[i])
+            break;
+        }
+
+        // encode value into domain of function
+        var dmin = domain[0];
+        if (i > 0)
+          dmin = bounds[i - 1];
+        var dmax = domain[1];
+        if (i < bounds.length)
+          dmax = bounds[i];
+
+        var rmin = encode[2 * i];
+        var rmax = encode[2 * i + 1];
+
+        var v2 = rmin + (v - dmin) * (rmax - rmin) / (dmax - dmin);
+
+        // call the appropropriate function
+        return fns[i]([v2]);
+      };
+    },
+
+    constructPostScript: function pdfFunctionConstructPostScript() {
+      return [CONSTRUCT_POSTSCRIPT];
+    },
+
+    constructPostScriptFromIR: function pdfFunctionConstructPostScriptFromIR() {
+      TODO('unhandled type of function');
+      return function() {
+        return [255, 105, 180];
+      };
+    }
+  };
+})();
+

src/image.js

@@ -0,0 +1,257 @@
+/* -*- 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 PDFImage = (function pdfImage() {
+  function constructor(xref, res, image, inline) {
+    this.image = image;
+    if (image.getParams) {
+      // JPX/JPEG2000 streams directly contain bits per component
+      // and color space mode information.
+      TODO('get params from actual stream');
+      // var bits = ...
+      // var colorspace = ...
+    }
+    // TODO cache rendered images?
+
+    var dict = image.dict;
+    this.width = dict.get('Width', 'W');
+    this.height = dict.get('Height', 'H');
+
+    if (this.width < 1 || this.height < 1)
+      error('Invalid image width: ' + this.width + ' or height: ' +
+            this.height);
+
+    this.interpolate = dict.get('Interpolate', 'I') || false;
+    this.imageMask = dict.get('ImageMask', 'IM') || false;
+
+    var bitsPerComponent = image.bitsPerComponent;
+    if (!bitsPerComponent) {
+      bitsPerComponent = dict.get('BitsPerComponent', 'BPC');
+      if (!bitsPerComponent) {
+        if (this.imageMask)
+          bitsPerComponent = 1;
+        else
+          error('Bits per component missing in image: ' + this.imageMask);
+      }
+    }
+    this.bpc = bitsPerComponent;
+
+    if (!this.imageMask) {
+      var colorSpace = dict.get('ColorSpace', 'CS');
+      if (!colorSpace) {
+        TODO('JPX images (which don"t require color spaces');
+        colorSpace = new Name('DeviceRGB');
+      }
+      this.colorSpace = ColorSpace.parse(colorSpace, xref, res);
+      this.numComps = this.colorSpace.numComps;
+    }
+
+    this.decode = dict.get('Decode', 'D');
+
+    var mask = xref.fetchIfRef(dict.get('Mask'));
+    var smask = xref.fetchIfRef(dict.get('SMask'));
+
+    if (mask) {
+      TODO('masked images');
+    } else if (smask) {
+      this.smask = new PDFImage(xref, res, smask);
+    }
+  }
+
+  constructor.prototype = {
+    getComponents: function getComponents(buffer, decodeMap) {
+      var bpc = this.bpc;
+      if (bpc == 8)
+        return buffer;
+
+      var width = this.width;
+      var height = this.height;
+      var numComps = this.numComps;
+
+      var length = width * height;
+      var bufferPos = 0;
+      var output = bpc <= 8 ? new Uint8Array(length) :
+        bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length);
+      var rowComps = width * numComps;
+
+      if (bpc == 1) {
+        var valueZero = 0, valueOne = 1;
+        if (decodeMap) {
+          valueZero = decodeMap[0] ? 1 : 0;
+          valueOne = decodeMap[1] ? 1 : 0;
+        }
+        var mask = 0;
+        var buf = 0;
+
+        for (var i = 0, ii = length; i < ii; ++i) {
+          if (i % rowComps == 0) {
+            mask = 0;
+            buf = 0;
+          } else {
+            mask >>= 1;
+          }
+
+          if (mask <= 0) {
+            buf = buffer[bufferPos++];
+            mask = 128;
+          }
+
+          output[i] = !(buf & mask) ? valueZero : valueOne;
+        }
+      } else {
+        if (decodeMap != null)
+          TODO('interpolate component values');
+        var bits = 0, buf = 0;
+        for (var i = 0, ii = length; i < ii; ++i) {
+          if (i % rowComps == 0) {
+            buf = 0;
+            bits = 0;
+          }
+
+          while (bits < bpc) {
+            buf = (buf << 8) | buffer[bufferPos++];
+            bits += 8;
+          }
+
+          var remainingBits = bits - bpc;
+          output[i] = buf >> remainingBits;
+          buf = buf & ((1 << remainingBits) - 1);
+          bits = remainingBits;
+        }
+      }
+      return output;
+    },
+    getOpacity: function getOpacity() {
+      var smask = this.smask;
+      var width = this.width;
+      var height = this.height;
+      var buf = new Uint8Array(width * height);
+
+      if (smask) {
+        if (smask.image.getImage) {
+          // smask is a DOM image
+          var tempCanvas = new ScratchCanvas(width, height);
+          var tempCtx = tempCanvas.getContext('2d');
+          var domImage = smask.image.getImage();
+          tempCtx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
+            0, 0, width, height);
+          var data = tempCtx.getImageData(0, 0, width, height).data;
+          for (var i = 0, j = 0, ii = width * height; i < ii; ++i, j += 4)
+            buf[i] = data[j]; // getting first component value
+          return buf;
+        }
+        var sw = smask.width;
+        var sh = smask.height;
+        if (sw != this.width || sh != this.height)
+          error('smask dimensions do not match image dimensions: ' + sw +
+                ' != ' + this.width + ', ' + sh + ' != ' + this.height);
+
+        smask.fillGrayBuffer(buf);
+        return buf;
+      } else {
+        for (var i = 0, ii = width * height; i < ii; ++i)
+          buf[i] = 255;
+      }
+      return buf;
+    },
+    applyStencilMask: function applyStencilMask(buffer, inverseDecode) {
+      var width = this.width, height = this.height;
+      var bitStrideLength = (width + 7) >> 3;
+      this.image.reset();
+      var imgArray = this.image.getBytes(bitStrideLength * height);
+      var imgArrayPos = 0;
+      var i, j, mask, buf;
+      // removing making non-masked pixels transparent
+      var bufferPos = 3; // alpha component offset
+      for (i = 0; i < height; i++) {
+        mask = 0;
+        for (j = 0; j < width; j++) {
+          if (!mask) {
+            buf = imgArray[imgArrayPos++];
+            mask = 128;
+          }
+          if (!(buf & mask) == inverseDecode) {
+            buffer[bufferPos] = 0;
+          }
+          bufferPos += 4;
+          mask >>= 1;
+        }
+      }
+    },
+    fillRgbaBuffer: function fillRgbaBuffer(buffer, decodeMap) {
+      var numComps = this.numComps;
+      var width = this.width;
+      var height = this.height;
+      var bpc = this.bpc;
+
+      // rows start at byte boundary;
+      var rowBytes = (width * numComps * bpc + 7) >> 3;
+      this.image.reset();
+      var imgArray = this.image.getBytes(height * rowBytes);
+
+      var comps = this.colorSpace.getRgbBuffer(
+        this.getComponents(imgArray, decodeMap), bpc);
+      var compsPos = 0;
+      var opacity = this.getOpacity();
+      var opacityPos = 0;
+      var length = width * height * 4;
+
+      for (var i = 0; i < length; i += 4) {
+        buffer[i] = comps[compsPos++];
+        buffer[i + 1] = comps[compsPos++];
+        buffer[i + 2] = comps[compsPos++];
+        buffer[i + 3] = opacity[opacityPos++];
+      }
+    },
+    fillGrayBuffer: function fillGrayBuffer(buffer) {
+      var numComps = this.numComps;
+      if (numComps != 1)
+        error('Reading gray scale from a color image: ' + numComps);
+
+      var width = this.width;
+      var height = this.height;
+      var bpc = this.bpc;
+
+      // rows start at byte boundary;
+      var rowBytes = (width * numComps * bpc + 7) >> 3;
+      this.image.reset();
+      var imgArray = this.image.getBytes(height * rowBytes);
+
+      var comps = this.getComponents(imgArray);
+      var length = width * height;
+
+      for (var i = 0; i < length; ++i)
+        buffer[i] = comps[i];
+    }
+  };
+  return constructor;
+})();
+
+var JpegImage = (function() {
+  function JpegImage(objId, imageData, objs) {
+    var src = 'data:image/jpeg;base64,' + window.btoa(imageData);
+
+    var img = new Image();
+    img.onload = (function() {
+      this.loaded = true;
+
+      objs.resolve(objId, this);
+
+      if (this.onLoad)
+        this.onLoad();
+    }).bind(this);
+    img.src = src;
+    this.domImage = img;
+  }
+
+  JpegImage.prototype = {
+    getImage: function() {
+      return this.domImage;
+    }
+  };
+
+  return JpegImage;
+})();
+

src/metrics.js

@@ -2941,3 +2941,4 @@ var Metrics = {
     'a191': 918
   }
 };
+

src/obj.js

@@ -0,0 +1,742 @@
+/* -*- 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 Name = (function nameName() {
+  function constructor(name) {
+    this.name = name;
+  }
+
+  constructor.prototype = {
+  };
+
+  return constructor;
+})();
+
+var Cmd = (function cmdCmd() {
+  function constructor(cmd) {
+    this.cmd = cmd;
+  }
+
+  constructor.prototype = {
+  };
+
+  return constructor;
+})();
+
+var Dict = (function dictDict() {
+  function constructor() {
+    this.map = Object.create(null);
+  }
+
+  constructor.prototype = {
+    get: function dictGet(key1, key2, key3) {
+      var value;
+      if (typeof (value = this.map[key1]) != 'undefined' || key1 in this.map ||
+          typeof key2 == 'undefined') {
+        return value;
+      }
+      if (typeof (value = this.map[key2]) != 'undefined' || key2 in this.map ||
+          typeof key3 == 'undefined') {
+        return value;
+      }
+
+      return this.map[key3] || null;
+    },
+
+    set: function dictSet(key, value) {
+      this.map[key] = value;
+    },
+
+    has: function dictHas(key) {
+      return key in this.map;
+    },
+
+    forEach: function dictForEach(callback) {
+      for (var key in this.map) {
+        callback(key, this.map[key]);
+      }
+    }
+  };
+
+  return constructor;
+})();
+
+var Ref = (function refRef() {
+  function constructor(num, gen) {
+    this.num = num;
+    this.gen = gen;
+  }
+
+  constructor.prototype = {
+  };
+
+  return constructor;
+})();
+
+// The reference is identified by number and generation,
+// this structure stores only one instance of the reference.
+var RefSet = (function refSet() {
+  function constructor() {
+    this.dict = {};
+  }
+
+  constructor.prototype = {
+    has: function refSetHas(ref) {
+      return !!this.dict['R' + ref.num + '.' + ref.gen];
+    },
+
+    put: function refSetPut(ref) {
+      this.dict['R' + ref.num + '.' + ref.gen] = ref;
+    }
+  };
+
+  return constructor;
+})();
+
+var Catalog = (function catalogCatalog() {
+  function constructor(xref) {
+    this.xref = xref;
+    var obj = xref.getCatalogObj();
+    assertWellFormed(isDict(obj), 'catalog object is not a dictionary');
+    this.catDict = obj;
+  }
+
+  constructor.prototype = {
+    get toplevelPagesDict() {
+      var pagesObj = this.catDict.get('Pages');
+      assertWellFormed(isRef(pagesObj), 'invalid top-level pages reference');
+      var xrefObj = this.xref.fetch(pagesObj);
+      assertWellFormed(isDict(xrefObj), 'invalid top-level pages dictionary');
+      // shadow the prototype getter
+      return shadow(this, 'toplevelPagesDict', xrefObj);
+    },
+    get documentOutline() {
+      var obj = this.catDict.get('Outlines');
+      var xref = this.xref;
+      var root = { items: [] };
+      if (isRef(obj)) {
+        obj = xref.fetch(obj).get('First');
+        var processed = new RefSet();
+        if (isRef(obj)) {
+          var queue = [{obj: obj, parent: root}];
+          // to avoid recursion keeping track of the items
+          // in the processed dictionary
+          processed.put(obj);
+          while (queue.length > 0) {
+            var i = queue.shift();
+            var outlineDict = xref.fetch(i.obj);
+            if (!outlineDict.has('Title'))
+              error('Invalid outline item');
+            var dest = outlineDict.get('A');
+            if (dest)
+              dest = xref.fetchIfRef(dest).get('D');
+            else if (outlineDict.has('Dest')) {
+              dest = outlineDict.get('Dest');
+              if (isName(dest))
+                dest = dest.name;
+            }
+            var title = xref.fetchIfRef(outlineDict.get('Title'));
+            var outlineItem = {
+              dest: dest,
+              title: stringToPDFString(title),
+              color: outlineDict.get('C') || [0, 0, 0],
+              count: outlineDict.get('Count'),
+              bold: !!(outlineDict.get('F') & 2),
+              italic: !!(outlineDict.get('F') & 1),
+              items: []
+            };
+            i.parent.items.push(outlineItem);
+            obj = outlineDict.get('First');
+            if (isRef(obj) && !processed.has(obj)) {
+              queue.push({obj: obj, parent: outlineItem});
+              processed.put(obj);
+            }
+            obj = outlineDict.get('Next');
+            if (isRef(obj) && !processed.has(obj)) {
+              queue.push({obj: obj, parent: i.parent});
+              processed.put(obj);
+            }
+          }
+        }
+      }
+      obj = root.items.length > 0 ? root.items : null;
+      return shadow(this, 'documentOutline', obj);
+    },
+    get numPages() {
+      var obj = this.toplevelPagesDict.get('Count');
+      assertWellFormed(
+        isInt(obj),
+        'page count in top level pages object is not an integer'
+      );
+      // shadow the prototype getter
+      return shadow(this, 'num', obj);
+    },
+    traverseKids: function catalogTraverseKids(pagesDict) {
+      var pageCache = this.pageCache;
+      var kids = pagesDict.get('Kids');
+      assertWellFormed(isArray(kids),
+                       'page dictionary kids object is not an array');
+      for (var i = 0; i < kids.length; ++i) {
+        var kid = kids[i];
+        assertWellFormed(isRef(kid),
+                         'page dictionary kid is not a reference');
+        var obj = this.xref.fetch(kid);
+        if (isDict(obj, 'Page') || (isDict(obj) && !obj.has('Kids'))) {
+          pageCache.push(new Page(this.xref, pageCache.length, obj, kid));
+        } else { // must be a child page dictionary
+          assertWellFormed(
+            isDict(obj),
+            'page dictionary kid reference points to wrong type of object'
+          );
+          this.traverseKids(obj);
+        }
+      }
+    },
+    get destinations() {
+      function fetchDestination(xref, ref) {
+        var dest = xref.fetchIfRef(ref);
+        return isDict(dest) ? dest.get('D') : dest;
+      }
+
+      var xref = this.xref;
+      var dests = {}, nameTreeRef, nameDictionaryRef;
+      var obj = this.catDict.get('Names');
+      if (obj)
+        nameTreeRef = xref.fetchIfRef(obj).get('Dests');
+      else if (this.catDict.has('Dests'))
+        nameDictionaryRef = this.catDict.get('Dests');
+
+      if (nameDictionaryRef) {
+        // reading simple destination dictionary
+        obj = xref.fetchIfRef(nameDictionaryRef);
+        obj.forEach(function catalogForEach(key, value) {
+          if (!value) return;
+          dests[key] = fetchDestination(xref, value);
+        });
+      }
+      if (nameTreeRef) {
+        // reading name tree
+        var processed = new RefSet();
+        processed.put(nameTreeRef);
+        var queue = [nameTreeRef];
+        while (queue.length > 0) {
+          var i, n;
+          obj = xref.fetch(queue.shift());
+          if (obj.has('Kids')) {
+            var kids = obj.get('Kids');
+            for (i = 0, n = kids.length; i < n; i++) {
+              var kid = kids[i];
+              if (processed.has(kid))
+                error('invalid destinations');
+              queue.push(kid);
+              processed.put(kid);
+            }
+            continue;
+          }
+          var names = obj.get('Names');
+          for (i = 0, n = names.length; i < n; i += 2) {
+            dests[names[i]] = fetchDestination(xref, names[i + 1]);
+          }
+        }
+      }
+      return shadow(this, 'destinations', dests);
+    },
+    getPage: function catalogGetPage(n) {
+      var pageCache = this.pageCache;
+      if (!pageCache) {
+        pageCache = this.pageCache = [];
+        this.traverseKids(this.toplevelPagesDict);
+      }
+      return this.pageCache[n - 1];
+    }
+  };
+
+  return constructor;
+})();
+
+var XRef = (function xRefXRef() {
+  function constructor(stream, startXRef, mainXRefEntriesOffset) {
+    this.stream = stream;
+    this.entries = [];
+    this.xrefstms = {};
+    var trailerDict = this.readXRef(startXRef);
+
+    // prepare the XRef cache
+    this.cache = [];
+
+    var encrypt = trailerDict.get('Encrypt');
+    if (encrypt) {
+      var fileId = trailerDict.get('ID');
+      this.encrypt = new CipherTransformFactory(this.fetch(encrypt),
+                                                fileId[0] /*, password */);
+    }
+
+    // get the root dictionary (catalog) object
+    if (!isRef(this.root = trailerDict.get('Root')))
+      error('Invalid root reference');
+  }
+
+  constructor.prototype = {
+    readXRefTable: function readXRefTable(parser) {
+      var obj;
+      while (true) {
+        if (isCmd(obj = parser.getObj(), 'trailer'))
+          break;
+        if (!isInt(obj))
+          error('Invalid XRef table');
+        var first = obj;
+        if (!isInt(obj = parser.getObj()))
+          error('Invalid XRef table');
+        var n = obj;
+        if (first < 0 || n < 0 || (first + n) != ((first + n) | 0))
+          error('Invalid XRef table: ' + first + ', ' + n);
+        for (var i = first; i < first + n; ++i) {
+          var entry = {};
+          if (!isInt(obj = parser.getObj()))
+            error('Invalid XRef table: ' + first + ', ' + n);
+          entry.offset = obj;
+          if (!isInt(obj = parser.getObj()))
+            error('Invalid XRef table: ' + first + ', ' + n);
+          entry.gen = obj;
+          obj = parser.getObj();
+          if (isCmd(obj, 'n')) {
+            entry.uncompressed = true;
+          } else if (isCmd(obj, 'f')) {
+            entry.free = true;
+          } else {
+            error('Invalid XRef table: ' + first + ', ' + n);
+          }
+          if (!this.entries[i]) {
+            // In some buggy PDF files the xref table claims to start at 1
+            // instead of 0.
+            if (i == 1 && first == 1 &&
+                entry.offset == 0 && entry.gen == 65535 && entry.free) {
+              i = first = 0;
+            }
+            this.entries[i] = entry;
+          }
+        }
+      }
+
+      // read the trailer dictionary
+      var dict;
+      if (!isDict(dict = parser.getObj()))
+        error('Invalid XRef table');
+
+      // get the 'Prev' pointer
+      var prev;
+      obj = dict.get('Prev');
+      if (isInt(obj)) {
+        prev = obj;
+      } else if (isRef(obj)) {
+        // certain buggy PDF generators generate "/Prev NNN 0 R" instead
+        // of "/Prev NNN"
+        prev = obj.num;
+      }
+      if (prev) {
+        this.readXRef(prev);
+      }
+
+      // check for 'XRefStm' key
+      if (isInt(obj = dict.get('XRefStm'))) {
+        var pos = obj;
+        // ignore previously loaded xref streams (possible infinite recursion)
+        if (!(pos in this.xrefstms)) {
+          this.xrefstms[pos] = 1;
+          this.readXRef(pos);
+        }
+      }
+
+      return dict;
+    },
+    readXRefStream: function readXRefStream(stream) {
+      var streamParameters = stream.parameters;
+      var byteWidths = streamParameters.get('W');
+      var range = streamParameters.get('Index');
+      if (!range)
+        range = [0, streamParameters.get('Size')];
+      var i, j;
+      while (range.length > 0) {
+        var first = range[0], n = range[1];
+        if (!isInt(first) || !isInt(n))
+          error('Invalid XRef range fields: ' + first + ', ' + n);
+        var typeFieldWidth = byteWidths[0];
+        var offsetFieldWidth = byteWidths[1];
+        var generationFieldWidth = byteWidths[2];
+        if (!isInt(typeFieldWidth) || !isInt(offsetFieldWidth) ||
+            !isInt(generationFieldWidth)) {
+          error('Invalid XRef entry fields length: ' + first + ', ' + n);
+        }
+        for (i = 0; i < n; ++i) {
+          var type = 0, offset = 0, generation = 0;
+          for (j = 0; j < typeFieldWidth; ++j)
+            type = (type << 8) | stream.getByte();
+          // if type field is absent, its default value = 1
+          if (typeFieldWidth == 0)
+            type = 1;
+          for (j = 0; j < offsetFieldWidth; ++j)
+            offset = (offset << 8) | stream.getByte();
+          for (j = 0; j < generationFieldWidth; ++j)
+            generation = (generation << 8) | stream.getByte();
+          var entry = {};
+          entry.offset = offset;
+          entry.gen = generation;
+          switch (type) {
+            case 0:
+              entry.free = true;
+              break;
+            case 1:
+              entry.uncompressed = true;
+              break;
+            case 2:
+              break;
+            default:
+              error('Invalid XRef entry type: ' + type);
+          }
+          if (!this.entries[first + i])
+            this.entries[first + i] = entry;
+        }
+        range.splice(0, 2);
+      }
+      var prev = streamParameters.get('Prev');
+      if (isInt(prev))
+        this.readXRef(prev);
+      return streamParameters;
+    },
+    indexObjects: function indexObjects() {
+      // Simple scan through the PDF content to find objects,
+      // trailers and XRef streams.
+      function readToken(data, offset) {
+        var token = '', ch = data[offset];
+        while (ch !== 13 && ch !== 10) {
+          if (++offset >= data.length)
+            break;
+          token += String.fromCharCode(ch);
+          ch = data[offset];
+        }
+        return token;
+      }
+      function skipUntil(data, offset, what) {
+        var length = what.length, dataLength = data.length;
+        var skipped = 0;
+        // finding byte sequence
+        while (offset < dataLength) {
+          var i = 0;
+          while (i < length && data[offset + i] == what[i])
+            ++i;
+          if (i >= length)
+            break; // sequence found
+
+          offset++;
+          skipped++;
+        }
+        return skipped;
+      }
+      var trailerBytes = new Uint8Array([116, 114, 97, 105, 108, 101, 114]);
+      var startxrefBytes = new Uint8Array([115, 116, 97, 114, 116, 120, 114,
+                                          101, 102]);
+      var endobjBytes = new Uint8Array([101, 110, 100, 111, 98, 106]);
+      var xrefBytes = new Uint8Array([47, 88, 82, 101, 102]);
+
+      var stream = this.stream;
+      stream.pos = 0;
+      var buffer = stream.getBytes();
+      var position = stream.start, length = buffer.length;
+      var trailers = [], xrefStms = [];
+      var state = 0;
+      var currentToken;
+      while (position < length) {
+        var ch = buffer[position];
+        if (ch === 32 || ch === 9 || ch === 13 || ch === 10) {
+          ++position;
+          continue;
+        }
+        if (ch === 37) { // %-comment
+          do {
+            ++position;
+            ch = buffer[position];
+          } while (ch !== 13 && ch !== 10);
+          continue;
+        }
+        var token = readToken(buffer, position);
+        var m;
+        if (token === 'xref') {
+          position += skipUntil(buffer, position, trailerBytes);
+          trailers.push(position);
+          position += skipUntil(buffer, position, startxrefBytes);
+        } else if ((m = /^(\d+)\s+(\d+)\s+obj\b/.exec(token))) {
+          this.entries[m[1]] = {
+            offset: position,
+            gen: m[2] | 0,
+            uncompressed: true
+          };
+
+          var contentLength = skipUntil(buffer, position, endobjBytes) + 7;
+          var content = buffer.subarray(position, position + contentLength);
+
+          // checking XRef stream suspect
+          // (it shall have '/XRef' and next char is not a letter)
+          var xrefTagOffset = skipUntil(content, 0, xrefBytes);
+          if (xrefTagOffset < contentLength &&
+              content[xrefTagOffset + 5] < 64) {
+            xrefStms.push(position);
+            this.xrefstms[position] = 1; // don't read it recursively
+          }
+
+          position += contentLength;
+        } else
+          position += token.length + 1;
+      }
+      // reading XRef streams
+      for (var i = 0; i < xrefStms.length; ++i) {
+          this.readXRef(xrefStms[i]);
+      }
+      // finding main trailer
+      var dict;
+      for (var i = 0; i < trailers.length; ++i) {
+        stream.pos = trailers[i];
+        var parser = new Parser(new Lexer(stream), true);
+        var obj = parser.getObj();
+        if (!isCmd(obj, 'trailer'))
+          continue;
+        // read the trailer dictionary
+        if (!isDict(dict = parser.getObj()))
+          continue;
+        // taking the first one with 'ID'
+        if (dict.has('ID'))
+          return dict;
+      }
+      // no tailer with 'ID', taking last one (if exists)
+      if (dict)
+        return dict;
+      // nothing helps
+      error('Invalid PDF structure');
+      return null;
+    },
+    readXRef: function readXref(startXRef) {
+      var stream = this.stream;
+      stream.pos = startXRef;
+      var parser = new Parser(new Lexer(stream), true);
+      var obj = parser.getObj();
+      // parse an old-style xref table
+      if (isCmd(obj, 'xref'))
+        return this.readXRefTable(parser);
+      // parse an xref stream
+      if (isInt(obj)) {
+        if (!isInt(parser.getObj()) ||
+            !isCmd(parser.getObj(), 'obj') ||
+            !isStream(obj = parser.getObj())) {
+          error('Invalid XRef stream');
+        }
+        return this.readXRefStream(obj);
+      }
+      return this.indexObjects();
+    },
+    getEntry: function xRefGetEntry(i) {
+      var e = this.entries[i];
+      if (e.free)
+        error('reading an XRef stream not implemented yet');
+      return e;
+    },
+    fetchIfRef: function xRefFetchIfRef(obj) {
+      if (!isRef(obj))
+        return obj;
+      return this.fetch(obj);
+    },
+    fetch: function xRefFetch(ref, suppressEncryption) {
+      var num = ref.num;
+      var e = this.cache[num];
+      if (e)
+        return e;
+
+      e = this.getEntry(num);
+      var gen = ref.gen;
+      var stream, parser;
+      if (e.uncompressed) {
+        if (e.gen != gen)
+          throw ('inconsistent generation in XRef');
+        stream = this.stream.makeSubStream(e.offset);
+        parser = new Parser(new Lexer(stream), true, this);
+        var obj1 = parser.getObj();
+        var obj2 = parser.getObj();
+        var obj3 = parser.getObj();
+        if (!isInt(obj1) || obj1 != num ||
+            !isInt(obj2) || obj2 != gen ||
+            !isCmd(obj3)) {
+          error('bad XRef entry');
+        }
+        if (!isCmd(obj3, 'obj')) {
+          // some bad pdfs use "obj1234" and really mean 1234
+          if (obj3.cmd.indexOf('obj') == 0) {
+            num = parseInt(obj3.cmd.substring(3), 10);
+            if (!isNaN(num))
+              return num;
+          }
+          error('bad XRef entry');
+        }
+        if (this.encrypt && !suppressEncryption) {
+          try {
+            e = parser.getObj(this.encrypt.createCipherTransform(num, gen));
+          } catch (ex) {
+            // almost all streams must be encrypted, but sometimes
+            // they are not probably due to some broken generators
+            // re-trying without encryption
+            return this.fetch(ref, true);
+          }
+        } else {
+          e = parser.getObj();
+        }
+        // Don't cache streams since they are mutable (except images).
+        if (!isStream(e) || e.getImage)
+          this.cache[num] = e;
+        return e;
+      }
+
+      // compressed entry
+      stream = this.fetch(new Ref(e.offset, 0));
+      if (!isStream(stream))
+        error('bad ObjStm stream');
+      var first = stream.parameters.get('First');
+      var n = stream.parameters.get('N');
+      if (!isInt(first) || !isInt(n)) {
+        error('invalid first and n parameters for ObjStm stream');
+      }
+      parser = new Parser(new Lexer(stream), false);
+      var i, entries = [], nums = [];
+      // read the object numbers to populate cache
+      for (i = 0; i < n; ++i) {
+        num = parser.getObj();
+        if (!isInt(num)) {
+          error('invalid object number in the ObjStm stream: ' + num);
+        }
+        nums.push(num);
+        var offset = parser.getObj();
+        if (!isInt(offset)) {
+          error('invalid object offset in the ObjStm stream: ' + offset);
+        }
+      }
+      // read stream objects for cache
+      for (i = 0; i < n; ++i) {
+        entries.push(parser.getObj());
+        this.cache[nums[i]] = entries[i];
+      }
+      e = entries[e.gen];
+      if (!e) {
+        error('bad XRef entry for compressed object');
+      }
+      return e;
+    },
+    getCatalogObj: function xRefGetCatalogObj() {
+      return this.fetch(this.root);
+    }
+  };
+
+  return constructor;
+})();
+
+/**
+ * A PDF document and page is built of many objects. E.g. there are objects
+ * for fonts, images, rendering code and such. These objects might get processed
+ * inside of a worker. The `PDFObjects` implements some basic functions to
+ * manage these objects.
+ */
+var PDFObjects = (function() {
+  function PDFObjects() {
+    this.objs = {};
+  }
+
+  PDFObjects.prototype = {
+    objs: null,
+
+    /**
+     * Internal function.
+     * Ensures there is an object defined for `objId`. Stores `data` on the
+     * object *if* it is created.
+     */
+    ensureObj: function(objId, data) {
+      if (this.objs[objId])
+        return this.objs[objId];
+      return this.objs[objId] = new Promise(objId, data);
+    },
+
+    /**
+     * If called *without* callback, this returns the data of `objId` but the
+     * object needs to be resolved. If it isn't, this function throws.
+     *
+     * If called *with* a callback, the callback is called with the data of the
+     * object once the object is resolved. That means, if you call this
+     * function and the object is already resolved, the callback gets called
+     * right away.
+     */
+    get: function(objId, callback) {
+      // If there is a callback, then the get can be async and the object is
+      // not required to be resolved right now
+      if (callback) {
+        this.ensureObj(objId).then(callback);
+        return null;
+      }
+
+      // If there isn't a callback, the user expects to get the resolved data
+      // directly.
+      var obj = this.objs[objId];
+
+      // If there isn't an object yet or the object isn't resolved, then the
+      // data isn't ready yet!
+      if (!obj || !obj.isResolved) {
+        throw 'Requesting object that isn\'t resolved yet ' + objId;
+        return null;
+      } else {
+        return obj.data;
+      }
+    },
+
+    /**
+     * Resolves the object `objId` with optional `data`.
+     */
+    resolve: function(objId, data) {
+      var objs = this.objs;
+
+      // In case there is a promise already on this object, just resolve it.
+      if (objs[objId]) {
+        objs[objId].resolve(data);
+      } else {
+        this.ensureObj(objId, data);
+      }
+    },
+
+    onData: function(objId, callback) {
+      this.ensureObj(objId).onData(callback);
+    },
+
+    isResolved: function(objId) {
+      var objs = this.objs;
+      if (!objs[objId]) {
+        return false;
+      } else {
+        return objs[objId].isResolved;
+      }
+    },
+
+    hasData: function(objId) {
+      var objs = this.objs;
+      if (!objs[objId]) {
+        return false;
+      } else {
+        return objs[objId].hasData;
+      }
+    },
+
+    /**
+     * Sets the data of an object but *doesn't* resolve it.
+     */
+    setData: function(objId, data) {
+      // Watchout! If you call `this.ensureObj(objId, data)` you're going to
+      // create a *resolved* promise which shouldn't be the case!
+      this.ensureObj(objId).data = data;
+    }
+  };
+  return PDFObjects;
+})();
+

src/parser.js

@@ -0,0 +1,636 @@
+/* -*- 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 EOF = {};
+
+function isEOF(v) {
+  return v == EOF;
+}
+
+var Parser = (function parserParser() {
+  function constructor(lexer, allowStreams, xref) {
+    this.lexer = lexer;
+    this.allowStreams = allowStreams;
+    this.xref = xref;
+    this.inlineImg = 0;
+    this.refill();
+  }
+
+  constructor.prototype = {
+    refill: function parserRefill() {
+      this.buf1 = this.lexer.getObj();
+      this.buf2 = this.lexer.getObj();
+    },
+    shift: function parserShift() {
+      if (isCmd(this.buf2, 'ID')) {
+        this.buf1 = this.buf2;
+        this.buf2 = null;
+        // skip byte after ID
+        this.lexer.skip();
+      } else {
+        this.buf1 = this.buf2;
+        this.buf2 = this.lexer.getObj();
+      }
+    },
+    getObj: function parserGetObj(cipherTransform) {
+      if (isCmd(this.buf1, 'BI')) { // inline image
+        this.shift();
+        return this.makeInlineImage(cipherTransform);
+      }
+      if (isCmd(this.buf1, '[')) { // array
+        this.shift();
+        var array = [];
+        while (!isCmd(this.buf1, ']') && !isEOF(this.buf1))
+          array.push(this.getObj());
+        if (isEOF(this.buf1))
+          error('End of file inside array');
+        this.shift();
+        return array;
+      }
+      if (isCmd(this.buf1, '<<')) { // dictionary or stream
+        this.shift();
+        var dict = new Dict();
+        while (!isCmd(this.buf1, '>>') && !isEOF(this.buf1)) {
+          if (!isName(this.buf1)) {
+            error('Dictionary key must be a name object');
+          } else {
+            var key = this.buf1.name;
+            this.shift();
+            if (isEOF(this.buf1))
+              break;
+            dict.set(key, this.getObj(cipherTransform));
+          }
+        }
+        if (isEOF(this.buf1))
+          error('End of file inside dictionary');
+
+        // stream objects are not allowed inside content streams or
+        // object streams
+        if (isCmd(this.buf2, 'stream')) {
+          return this.allowStreams ?
+            this.makeStream(dict, cipherTransform) : dict;
+        }
+        this.shift();
+        return dict;
+      }
+      if (isInt(this.buf1)) { // indirect reference or integer
+        var num = this.buf1;
+        this.shift();
+        if (isInt(this.buf1) && isCmd(this.buf2, 'R')) {
+          var ref = new Ref(num, this.buf1);
+          this.shift();
+          this.shift();
+          return ref;
+        }
+        return num;
+      }
+      if (isString(this.buf1)) { // string
+        var str = this.buf1;
+        this.shift();
+        if (cipherTransform)
+          str = cipherTransform.decryptString(str);
+        return str;
+      }
+
+      // simple object
+      var obj = this.buf1;
+      this.shift();
+      return obj;
+    },
+    makeInlineImage: function parserMakeInlineImage(cipherTransform) {
+      var lexer = this.lexer;
+      var stream = lexer.stream;
+
+      // parse dictionary
+      var dict = new Dict();
+      while (!isCmd(this.buf1, 'ID') && !isEOF(this.buf1)) {
+        if (!isName(this.buf1)) {
+          error('Dictionary key must be a name object');
+        } else {
+          var key = this.buf1.name;
+          this.shift();
+          if (isEOF(this.buf1))
+            break;
+          dict.set(key, this.getObj(cipherTransform));
+        }
+      }
+
+      // parse image stream
+      var startPos = stream.pos;
+
+      // searching for the /\sEI\s/
+      var state = 0, ch;
+      while (state != 4 && (ch = stream.getByte()) != null) {
+        switch (ch) {
+          case 0x20:
+          case 0x0D:
+          case 0x0A:
+            state = state === 3 ? 4 : 1;
+            break;
+          case 0x45:
+            state = state === 1 ? 2 : 0;
+            break;
+          case 0x49:
+            state = state === 2 ? 3 : 0;
+            break;
+          default:
+            state = 0;
+            break;
+        }
+      }
+
+      // TODO improve the small images performance to remove the limit
+      var inlineImgLimit = 500;
+      if (++this.inlineImg >= inlineImgLimit) {
+        if (this.inlineImg === inlineImgLimit)
+          warn('Too many inline images');
+        this.shift();
+        return null;
+      }
+
+      var length = (stream.pos - 4) - startPos;
+      var imageStream = stream.makeSubStream(startPos, length, dict);
+      if (cipherTransform)
+        imageStream = cipherTransform.createStream(imageStream);
+      imageStream = this.filter(imageStream, dict, length);
+      imageStream.parameters = dict;
+
+      this.buf2 = new Cmd('EI');
+      this.shift();
+
+      return imageStream;
+    },
+    makeStream: function parserMakeStream(dict, cipherTransform) {
+      var lexer = this.lexer;
+      var stream = lexer.stream;
+
+      // get stream start position
+      lexer.skipToNextLine();
+      var pos = stream.pos;
+
+      // get length
+      var length = dict.get('Length');
+      var xref = this.xref;
+      if (xref)
+        length = xref.fetchIfRef(length);
+      if (!isInt(length)) {
+        error('Bad ' + length + ' attribute in stream');
+        length = 0;
+      }
+
+      // skip over the stream data
+      stream.pos = pos + length;
+      this.shift(); // '>>'
+      this.shift(); // 'stream'
+      if (!isCmd(this.buf1, 'endstream'))
+        error('Missing endstream');
+      this.shift();
+
+      stream = stream.makeSubStream(pos, length, dict);
+      if (cipherTransform)
+        stream = cipherTransform.createStream(stream);
+      stream = this.filter(stream, dict, length);
+      stream.parameters = dict;
+      return stream;
+    },
+    filter: function parserFilter(stream, dict, length) {
+      var filter = dict.get('Filter', 'F');
+      var params = dict.get('DecodeParms', 'DP');
+      if (isName(filter))
+        return this.makeFilter(stream, filter.name, length, params);
+      if (isArray(filter)) {
+        var filterArray = filter;
+        var paramsArray = params;
+        for (var i = 0, ii = filterArray.length; i < ii; ++i) {
+          filter = filterArray[i];
+          if (!isName(filter))
+            error('Bad filter name: ' + filter);
+          else {
+            params = null;
+            if (isArray(paramsArray) && (i in paramsArray))
+              params = paramsArray[i];
+            stream = this.makeFilter(stream, filter.name, length, params);
+            // after the first stream the length variable is invalid
+            length = null;
+          }
+        }
+      }
+      return stream;
+    },
+    makeFilter: function parserMakeFilter(stream, name, length, params) {
+      if (name == 'FlateDecode' || name == 'Fl') {
+        if (params) {
+          return new PredictorStream(new FlateStream(stream), params);
+        }
+        return new FlateStream(stream);
+      } else if (name == 'LZWDecode' || name == 'LZW') {
+        var earlyChange = 1;
+        if (params) {
+          if (params.has('EarlyChange'))
+            earlyChange = params.get('EarlyChange');
+          return new PredictorStream(
+            new LZWStream(stream, earlyChange), params);
+        }
+        return new LZWStream(stream, earlyChange);
+      } else if (name == 'DCTDecode' || name == 'DCT') {
+        var bytes = stream.getBytes(length);
+        return new JpegStream(bytes, stream.dict);
+      } else if (name == 'ASCII85Decode' || name == 'A85') {
+        return new Ascii85Stream(stream);
+      } else if (name == 'ASCIIHexDecode' || name == 'AHx') {
+        return new AsciiHexStream(stream);
+      } else if (name == 'CCITTFaxDecode' || name == 'CCF') {
+        return new CCITTFaxStream(stream, params);
+      } else {
+        TODO('filter "' + name + '" not supported yet');
+      }
+      return stream;
+    }
+  };
+
+  return constructor;
+})();
+
+var Lexer = (function lexer() {
+  function constructor(stream) {
+    this.stream = stream;
+  }
+
+  constructor.isSpace = function lexerIsSpace(ch) {
+    return ch == ' ' || ch == '\t' || ch == '\x0d' || ch == '\x0a';
+  };
+
+  // A '1' in this array means the character is white space.  A '1' or
+  // '2' means the character ends a name or command.
+  var specialChars = [
+    1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0,   // 0x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 1x
+    1, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2,   // 2x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0,   // 3x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 4x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0,   // 5x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 6x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0,   // 7x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 8x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 9x
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // ax
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // bx
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // cx
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // dx
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // ex
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0    // fx
+  ];
+
+  function toHexDigit(ch) {
+    if (ch >= '0' && ch <= '9')
+      return ch.charCodeAt(0) - 48;
+    ch = ch.toUpperCase();
+    if (ch >= 'A' && ch <= 'F')
+      return ch.charCodeAt(0) - 55;
+    return -1;
+  }
+
+  constructor.prototype = {
+    getNumber: function lexerGetNumber(ch) {
+      var floating = false;
+      var str = ch;
+      var stream = this.stream;
+      for (;;) {
+        ch = stream.lookChar();
+        if (ch == '.' && !floating) {
+          str += ch;
+          floating = true;
+        } else if (ch == '-') {
+          // ignore minus signs in the middle of numbers to match
+          // Adobe's behavior
+          warn('Badly formated number');
+        } else if (ch >= '0' && ch <= '9') {
+          str += ch;
+        } else if (ch == 'e' || ch == 'E') {
+          floating = true;
+        } else {
+          // the last character doesn't belong to us
+          break;
+        }
+        stream.skip();
+      }
+      var value = parseFloat(str);
+      if (isNaN(value))
+        error('Invalid floating point number: ' + value);
+      return value;
+    },
+    getString: function lexerGetString() {
+      var numParen = 1;
+      var done = false;
+      var str = '';
+      var stream = this.stream;
+      var ch;
+      do {
+        ch = stream.getChar();
+        switch (ch) {
+          case undefined:
+            warn('Unterminated string');
+            done = true;
+            break;
+          case '(':
+            ++numParen;
+            str += ch;
+            break;
+          case ')':
+            if (--numParen == 0) {
+              done = true;
+            } else {
+              str += ch;
+            }
+            break;
+          case '\\':
+            ch = stream.getChar();
+            switch (ch) {
+              case undefined:
+                warn('Unterminated string');
+                done = true;
+                break;
+              case 'n':
+                str += '\n';
+                break;
+              case 'r':
+                str += '\r';
+                break;
+              case 't':
+                str += '\t';
+                break;
+              case 'b':
+                str += '\b';
+                break;
+              case 'f':
+                str += '\f';
+                break;
+              case '\\':
+              case '(':
+              case ')':
+                str += ch;
+                break;
+              case '0': case '1': case '2': case '3':
+              case '4': case '5': case '6': case '7':
+                var x = ch - '0';
+                ch = stream.lookChar();
+                if (ch >= '0' && ch <= '7') {
+                  stream.skip();
+                  x = (x << 3) + (ch - '0');
+                  ch = stream.lookChar();
+                  if (ch >= '0' && ch <= '7') {
+                    stream.skip();
+                    x = (x << 3) + (ch - '0');
+                  }
+                }
+
+                str += String.fromCharCode(x);
+                break;
+              case '\r':
+                ch = stream.lookChar();
+                if (ch == '\n')
+                  stream.skip();
+                break;
+              case '\n':
+                break;
+              default:
+                str += ch;
+            }
+            break;
+          default:
+            str += ch;
+        }
+      } while (!done);
+      return str;
+    },
+    getName: function lexerGetName(ch) {
+      var str = '';
+      var stream = this.stream;
+      while (!!(ch = stream.lookChar()) && !specialChars[ch.charCodeAt(0)]) {
+        stream.skip();
+        if (ch == '#') {
+          ch = stream.lookChar();
+          var x = toHexDigit(ch);
+          if (x != -1) {
+            stream.skip();
+            var x2 = toHexDigit(stream.getChar());
+            if (x2 == -1)
+              error('Illegal digit in hex char in name: ' + x2);
+            str += String.fromCharCode((x << 4) | x2);
+          } else {
+            str += '#';
+            str += ch;
+          }
+        } else {
+          str += ch;
+        }
+      }
+      if (str.length > 128)
+        error('Warning: name token is longer than allowed by the spec: ' +
+              str.length);
+      return new Name(str);
+    },
+    getHexString: function lexerGetHexString(ch) {
+      var str = '';
+      var stream = this.stream;
+      for (;;) {
+        ch = stream.getChar();
+        if (ch == '>') {
+          break;
+        }
+        if (!ch) {
+          warn('Unterminated hex string');
+          break;
+        }
+        if (specialChars[ch.charCodeAt(0)] != 1) {
+          var x, x2;
+          if ((x = toHexDigit(ch)) == -1)
+            error('Illegal character in hex string: ' + ch);
+
+          ch = stream.getChar();
+          while (specialChars[ch.charCodeAt(0)] == 1)
+            ch = stream.getChar();
+
+          if ((x2 = toHexDigit(ch)) == -1)
+            error('Illegal character in hex string: ' + ch);
+
+          str += String.fromCharCode((x << 4) | x2);
+        }
+      }
+      return str;
+    },
+    getObj: function lexerGetObj() {
+      // skip whitespace and comments
+      var comment = false;
+      var stream = this.stream;
+      var ch;
+      while (true) {
+        if (!(ch = stream.getChar()))
+          return EOF;
+        if (comment) {
+          if (ch == '\r' || ch == '\n')
+            comment = false;
+        } else if (ch == '%') {
+          comment = true;
+        } else if (specialChars[ch.charCodeAt(0)] != 1) {
+          break;
+        }
+      }
+
+      // start reading token
+      switch (ch) {
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case '+': case '-': case '.':
+          return this.getNumber(ch);
+        case '(':
+          return this.getString();
+        case '/':
+          return this.getName(ch);
+        // array punctuation
+        case '[':
+        case ']':
+          return new Cmd(ch);
+        // hex string or dict punctuation
+        case '<':
+          ch = stream.lookChar();
+          if (ch == '<') {
+            // dict punctuation
+            stream.skip();
+            return new Cmd('<<');
+          }
+          return this.getHexString(ch);
+        // dict punctuation
+        case '>':
+          ch = stream.lookChar();
+          if (ch == '>') {
+            stream.skip();
+            return new Cmd('>>');
+          }
+        case '{':
+        case '}':
+          return new Cmd(ch);
+        // fall through
+        case ')':
+          error('Illegal character: ' + ch);
+          return Error;
+      }
+
+      // command
+      var str = ch;
+      while (!!(ch = stream.lookChar()) && !specialChars[ch.charCodeAt(0)]) {
+        stream.skip();
+        if (str.length == 128) {
+          error('Command token too long: ' + str.length);
+          break;
+        }
+        str += ch;
+      }
+      if (str == 'true')
+        return true;
+      if (str == 'false')
+        return false;
+      if (str == 'null')
+        return null;
+      return new Cmd(str);
+    },
+    skipToNextLine: function lexerSkipToNextLine() {
+      var stream = this.stream;
+      while (true) {
+        var ch = stream.getChar();
+        if (!ch || ch == '\n')
+          return;
+        if (ch == '\r') {
+          if ((ch = stream.lookChar()) == '\n')
+            stream.skip();
+          return;
+        }
+      }
+    },
+    skip: function lexerSkip() {
+      this.stream.skip();
+    }
+  };
+
+  return constructor;
+})();
+
+var Linearization = (function linearizationLinearization() {
+  function constructor(stream) {
+    this.parser = new Parser(new Lexer(stream), false);
+    var obj1 = this.parser.getObj();
+    var obj2 = this.parser.getObj();
+    var obj3 = this.parser.getObj();
+    this.linDict = this.parser.getObj();
+    if (isInt(obj1) && isInt(obj2) && isCmd(obj3, 'obj') &&
+        isDict(this.linDict)) {
+      var obj = this.linDict.get('Linearized');
+      if (!(isNum(obj) && obj > 0))
+        this.linDict = null;
+    }
+  }
+
+  constructor.prototype = {
+    getInt: function linearizationGetInt(name) {
+      var linDict = this.linDict;
+      var obj;
+      if (isDict(linDict) &&
+          isInt(obj = linDict.get(name)) &&
+          obj > 0) {
+        return obj;
+      }
+      error('"' + name + '" field in linearization table is invalid');
+      return 0;
+    },
+    getHint: function linearizationGetHint(index) {
+      var linDict = this.linDict;
+      var obj1, obj2;
+      if (isDict(linDict) &&
+          isArray(obj1 = linDict.get('H')) &&
+          obj1.length >= 2 &&
+          isInt(obj2 = obj1[index]) &&
+          obj2 > 0) {
+        return obj2;
+      }
+      error('Hints table in linearization table is invalid: ' + index);
+      return 0;
+    },
+    get length() {
+      if (!isDict(this.linDict))
+        return 0;
+      return this.getInt('L');
+    },
+    get hintsOffset() {
+      return this.getHint(0);
+    },
+    get hintsLength() {
+      return this.getHint(1);
+    },
+    get hintsOffset2() {
+      return this.getHint(2);
+    },
+    get hintsLenth2() {
+      return this.getHint(3);
+    },
+    get objectNumberFirst() {
+      return this.getInt('O');
+    },
+    get endFirst() {
+      return this.getInt('E');
+    },
+    get numPages() {
+      return this.getInt('N');
+    },
+    get mainXRefEntriesOffset() {
+      return this.getInt('T');
+    },
+    get pageFirst() {
+      return this.getInt('P');
+    }
+  };
+
+  return constructor;
+})();
+

src/pattern.js

@@ -0,0 +1,290 @@
+/* -*- 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 Pattern = (function patternPattern() {
+  // Constructor should define this.getPattern
+  function constructor() {
+    error('should not call Pattern constructor');
+  }
+
+  constructor.prototype = {
+    // Input: current Canvas context
+    // Output: the appropriate fillStyle or strokeStyle
+    getPattern: function pattern_getStyle(ctx) {
+      error('Should not call Pattern.getStyle: ' + ctx);
+    }
+  };
+
+  constructor.shadingFromIR = function pattern_shadingFromIR(ctx, raw) {
+    return Shadings[raw[0]].fromIR(ctx, raw);
+  }
+
+  constructor.parseShading = function pattern_shading(shading, matrix,
+      xref, res, ctx) {
+
+    var dict = isStream(shading) ? shading.dict : shading;
+    var type = dict.get('ShadingType');
+
+    switch (type) {
+      case 2:
+      case 3:
+        // both radial and axial shadings are handled by RadialAxial shading
+        return new Shadings.RadialAxial(dict, matrix, xref, res, ctx);
+      default:
+        return new Shadings.Dummy();
+    }
+  };
+  return constructor;
+})();
+
+var Shadings = {};
+
+// Radial and axial shading have very similar implementations
+// If needed, the implementations can be broken into two classes
+Shadings.RadialAxial = (function radialAxialShading() {
+  function constructor(dict, matrix, xref, res, ctx) {
+    this.matrix = matrix;
+    this.coordsArr = dict.get('Coords');
+    this.shadingType = dict.get('ShadingType');
+    this.type = 'Pattern';
+
+    this.ctx = ctx;
+    var cs = dict.get('ColorSpace', 'CS');
+    cs = ColorSpace.parse(cs, xref, res);
+    this.cs = cs;
+
+    var t0 = 0.0, t1 = 1.0;
+    if (dict.has('Domain')) {
+      var domainArr = dict.get('Domain');
+      t0 = domainArr[0];
+      t1 = domainArr[1];
+    }
+
+    var extendStart = false, extendEnd = false;
+    if (dict.has('Extend')) {
+      var extendArr = dict.get('Extend');
+      extendStart = extendArr[0];
+      extendEnd = extendArr[1];
+      TODO('Support extend');
+    }
+
+    this.extendStart = extendStart;
+    this.extendEnd = extendEnd;
+
+    var fnObj = dict.get('Function');
+    fnObj = xref.fetchIfRef(fnObj);
+    if (isArray(fnObj))
+      error('No support for array of functions');
+    else if (!isPDFFunction(fnObj))
+      error('Invalid function');
+    var fn = PDFFunction.parse(xref, fnObj);
+
+    // 10 samples seems good enough for now, but probably won't work
+    // if there are sharp color changes. Ideally, we would implement
+    // the spec faithfully and add lossless optimizations.
+    var step = (t1 - t0) / 10;
+    var diff = t1 - t0;
+
+    var colorStops = [];
+    for (var i = t0; i <= t1; i += step) {
+      var color = fn([i]);
+      var rgbColor = Util.makeCssRgb.apply(this, cs.getRgb(color));
+      colorStops.push([(i - t0) / diff, rgbColor]);
+    }
+
+    this.colorStops = colorStops;
+  }
+
+  constructor.fromIR = function(ctx, raw) {
+    var type = raw[1];
+    var colorStops = raw[2];
+    var p0 = raw[3];
+    var p1 = raw[4];
+    var r0 = raw[5];
+    var r1 = raw[6];
+
+    var curMatrix = ctx.mozCurrentTransform;
+    if (curMatrix) {
+      var userMatrix = ctx.mozCurrentTransformInverse;
+
+      p0 = Util.applyTransform(p0, curMatrix);
+      p0 = Util.applyTransform(p0, userMatrix);
+
+      p1 = Util.applyTransform(p1, curMatrix);
+      p1 = Util.applyTransform(p1, userMatrix);
+    }
+
+    if (type == 2)
+      var grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
+    else if (type == 3)
+      var grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
+
+    for (var i = 0, ii = colorStops.length; i < ii; ++i) {
+      var c = colorStops[i];
+      grad.addColorStop(c[0], c[1]);
+    }
+    return grad;
+  }
+
+  constructor.prototype = {
+    getIR: function RadialAxialShading_getIR() {
+      var coordsArr = this.coordsArr;
+      var type = this.shadingType;
+      if (type == 2) {
+        var p0 = [coordsArr[0], coordsArr[1]];
+        var p1 = [coordsArr[2], coordsArr[3]];
+        var r0 = null;
+        var r1 = null;
+      } else if (type == 3) {
+        var p0 = [coordsArr[0], coordsArr[1]];
+        var p1 = [coordsArr[3], coordsArr[4]];
+        var r0 = coordsArr[2];
+        var r1 = coordsArr[5];
+      } else {
+        error('getPattern type unknown: ' + type);
+      }
+
+      var matrix = this.matrix;
+      if (matrix) {
+        p0 = Util.applyTransform(p0, matrix);
+        p1 = Util.applyTransform(p1, matrix);
+      }
+
+      return ['RadialAxial', type, this.colorStops, p0, p1, r0, r1];
+    }
+  };
+
+  return constructor;
+})();
+
+Shadings.Dummy = (function dummyShading() {
+  function constructor() {
+    this.type = 'Pattern';
+  }
+
+  constructor.fromIR = function() {
+    return 'hotpink';
+  }
+
+  constructor.prototype = {
+    getIR: function dummpy_getir() {
+      return ['Dummy'];
+    }
+  };
+  return constructor;
+})();
+
+var TilingPattern = (function tilingPattern() {
+  var PAINT_TYPE_COLORED = 1, PAINT_TYPE_UNCOLORED = 2;
+
+  function TilingPattern(IR, color, ctx, objs) {
+    var IRQueue = IR[2];
+    this.matrix = IR[3];
+    var bbox = IR[4];
+    var xstep = IR[5];
+    var ystep = IR[6];
+    var paintType = IR[7];
+
+    TODO('TilingType');
+
+    this.curMatrix = ctx.mozCurrentTransform;
+    this.invMatrix = ctx.mozCurrentTransformInverse;
+    this.ctx = ctx;
+    this.type = 'Pattern';
+
+    var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
+
+    var topLeft = [x0, y0];
+    // we want the canvas to be as large as the step size
+    var botRight = [x0 + xstep, y0 + ystep];
+
+    var width = botRight[0] - topLeft[0];
+    var height = botRight[1] - topLeft[1];
+
+    // TODO: hack to avoid OOM, we would idealy compute the tiling
+    // pattern to be only as large as the acual size in device space
+    // This could be computed with .mozCurrentTransform, but still
+    // needs to be implemented
+    while (Math.abs(width) > 512 || Math.abs(height) > 512) {
+      width = 512;
+      height = 512;
+    }
+
+    var tmpCanvas = new ScratchCanvas(width, height);
+
+    // set the new canvas element context as the graphics context
+    var tmpCtx = tmpCanvas.getContext('2d');
+    var graphics = new CanvasGraphics(tmpCtx, objs);
+
+    switch (paintType) {
+      case PAINT_TYPE_COLORED:
+        tmpCtx.fillStyle = ctx.fillStyle;
+        tmpCtx.strokeStyle = ctx.strokeStyle;
+        break;
+      case PAINT_TYPE_UNCOLORED:
+        color = Util.makeCssRgb.apply(this, color);
+        tmpCtx.fillStyle = color;
+        tmpCtx.strokeStyle = color;
+        break;
+      default:
+        error('Unsupported paint type: ' + paintType);
+    }
+
+    var scale = [width / xstep, height / ystep];
+    this.scale = scale;
+
+    // transform coordinates to pattern space
+    var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
+    var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
+    graphics.transform.apply(graphics, tmpScale);
+    graphics.transform.apply(graphics, tmpTranslate);
+
+    if (bbox && isArray(bbox) && 4 == bbox.length) {
+      var bboxWidth = bbox[2] - bbox[0];
+      var bboxHeight = bbox[3] - bbox[1];
+      graphics.rectangle(bbox[0], bbox[1], bboxWidth, bboxHeight);
+      graphics.clip();
+      graphics.endPath();
+    }
+
+    graphics.executeIRQueue(IRQueue);
+
+    this.canvas = tmpCanvas;
+  }
+
+  TilingPattern.getIR = function tiling_getIR(codeIR, dict, args) {
+    var matrix = dict.get('Matrix');
+    var bbox = dict.get('BBox');
+    var xstep = dict.get('XStep');
+    var ystep = dict.get('YStep');
+    var paintType = dict.get('PaintType');
+
+    return [
+      'TilingPattern', args, codeIR, matrix, bbox, xstep, ystep, paintType
+    ];
+  }
+
+  TilingPattern.prototype = {
+    getPattern: function tiling_getPattern() {
+      var matrix = this.matrix;
+      var curMatrix = this.curMatrix;
+      var ctx = this.ctx;
+
+      if (curMatrix)
+        ctx.setTransform.apply(ctx, curMatrix);
+
+      if (matrix)
+        ctx.transform.apply(ctx, matrix);
+
+      var scale = this.scale;
+      ctx.scale(1 / scale[0], 1 / scale[1]);
+
+      return ctx.createPattern(this.canvas, 'repeat');
+    }
+  };
+
+  return TilingPattern;
+})();
+

src/pdf.js

@@ -0,0 +1,15 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+var PDFJS = {};
+
+(function pdfjsWrapper() {
+
+  // Use strict in our context only - users might not want it
+  'use strict';
+
+  // Files are inserted below - see Makefile
+  /* PDFJSSCRIPT_INCLUDE_ALL */
+
+})();
+

src/util.js

@@ -0,0 +1,286 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'use strict';
+
+function log(msg) {
+  if (console && console.log)
+    console.log(msg);
+  else if (print)
+    print(msg);
+}
+
+function warn(msg) {
+  if (verbosity >= WARNINGS)
+    log('Warning: ' + msg);
+}
+
+function backtrace() {
+  try {
+    throw new Error();
+  } catch (e) {
+    return e.stack ? e.stack.split('\n').slice(2).join('\n') : "";
+  }
+}
+
+function error(msg) {
+  log("Error: " + msg);
+  log(backtrace());
+  throw new Error(msg);
+}
+
+function TODO(what) {
+  if (verbosity >= TODOS)
+    log('TODO: ' + what);
+}
+
+function malformed(msg) {
+  error('Malformed PDF: ' + msg);
+}
+
+function assert(cond, msg) {
+  if (!cond)
+    error(msg);
+}
+
+// In a well-formed PDF, |cond| holds.  If it doesn't, subsequent
+// behavior is undefined.
+function assertWellFormed(cond, msg) {
+  if (!cond)
+    malformed(msg);
+}
+
+function shadow(obj, prop, value) {
+  Object.defineProperty(obj, prop, { value: value,
+                                     enumerable: true,
+                                     configurable: true,
+                                     writable: false });
+  return value;
+}
+
+function bytesToString(bytes) {
+  var str = '';
+  var length = bytes.length;
+  for (var n = 0; n < length; ++n)
+    str += String.fromCharCode(bytes[n]);
+  return str;
+}
+
+function stringToBytes(str) {
+  var length = str.length;
+  var bytes = new Uint8Array(length);
+  for (var n = 0; n < length; ++n)
+    bytes[n] = str.charCodeAt(n) & 0xFF;
+  return bytes;
+}
+
+var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
+
+var Util = (function utilUtil() {
+  function constructor() {}
+  constructor.makeCssRgb = function makergb(r, g, b) {
+    var ri = (255 * r) | 0, gi = (255 * g) | 0, bi = (255 * b) | 0;
+    return 'rgb(' + ri + ',' + gi + ',' + bi + ')';
+  };
+  constructor.makeCssCmyk = function makecmyk(c, m, y, k) {
+    c = (new DeviceCmykCS()).getRgb([c, m, y, k]);
+    var ri = (255 * c[0]) | 0, gi = (255 * c[1]) | 0, bi = (255 * c[2]) | 0;
+    return 'rgb(' + ri + ',' + gi + ',' + bi + ')';
+  };
+  constructor.applyTransform = function apply(p, m) {
+    var xt = p[0] * m[0] + p[1] * m[2] + m[4];
+    var yt = p[0] * m[1] + p[1] * m[3] + m[5];
+    return [xt, yt];
+  };
+
+  return constructor;
+})();
+
+var PDFStringTranslateTable = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014,
+  0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C,
+  0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160,
+  0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC
+];
+
+function stringToPDFString(str) {
+  var i, n = str.length, str2 = '';
+  if (str[0] === '\xFE' && str[1] === '\xFF') {
+    // UTF16BE BOM
+    for (i = 2; i < n; i += 2)
+      str2 += String.fromCharCode(
+        (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1));
+  } else {
+    for (i = 0; i < n; ++i) {
+      var code = PDFStringTranslateTable[str.charCodeAt(i)];
+      str2 += code ? String.fromCharCode(code) : str.charAt(i);
+    }
+  }
+  return str2;
+}
+
+function isBool(v) {
+  return typeof v == 'boolean';
+}
+
+function isInt(v) {
+  return typeof v == 'number' && ((v | 0) == v);
+}
+
+function isNum(v) {
+  return typeof v == 'number';
+}
+
+function isString(v) {
+  return typeof v == 'string';
+}
+
+function isNull(v) {
+  return v === null;
+}
+
+function isName(v) {
+  return v instanceof Name;
+}
+
+function isCmd(v, cmd) {
+  return v instanceof Cmd && (!cmd || v.cmd == cmd);
+}
+
+function isDict(v, type) {
+  return v instanceof Dict && (!type || v.get('Type').name == type);
+}
+
+function isArray(v) {
+  return v instanceof Array;
+}
+
+function isStream(v) {
+  return typeof v == 'object' && v != null && ('getChar' in v);
+}
+
+function isArrayBuffer(v) {
+  return typeof v == 'object' && v != null && ('byteLength' in v);
+}
+
+function isRef(v) {
+  return v instanceof Ref;
+}
+
+function isPDFFunction(v) {
+  var fnDict;
+  if (typeof v != 'object')
+    return false;
+  else if (isDict(v))
+    fnDict = v;
+  else if (isStream(v))
+    fnDict = v.dict;
+  else
+    return false;
+  return fnDict.has('FunctionType');
+}
+
+/**
+ * 'Promise' object.
+ * Each object that is stored in PDFObjects is based on a Promise object that
+ * contains the status of the object and the data. There migth be situations,
+ * where a function want to use the value of an object, but it isn't ready at
+ * that time. To get a notification, once the object is ready to be used, s.o.
+ * can add a callback using the `then` method on the promise that then calls
+ * the callback once the object gets resolved.
+ * A promise can get resolved only once and only once the data of the promise
+ * can be set. If any of these happens twice or the data is required before
+ * it was set, an exception is throw.
+ */
+var Promise = (function() {
+  var EMPTY_PROMISE = {};
+
+  /**
+   * If `data` is passed in this constructor, the promise is created resolved.
+   * If there isn't data, it isn't resolved at the beginning.
+   */
+  function Promise(name, data) {
+    this.name = name;
+    // If you build a promise and pass in some data it's already resolved.
+    if (data != null) {
+      this.isResolved = true;
+      this._data = data;
+      this.hasData = true;
+    } else {
+      this.isResolved = false;
+      this._data = EMPTY_PROMISE;
+    }
+    this.callbacks = [];
+  };
+
+  Promise.prototype = {
+    hasData: false,
+
+    set data(value) {
+      if (value === undefined) {
+        return;
+      }
+      if (this._data !== EMPTY_PROMISE) {
+        throw 'Promise ' + this.name +
+                                ': Cannot set the data of a promise twice';
+      }
+      this._data = value;
+      this.hasData = true;
+
+      if (this.onDataCallback) {
+        this.onDataCallback(value);
+      }
+    },
+
+    get data() {
+      if (this._data === EMPTY_PROMISE) {
+        throw 'Promise ' + this.name + ': Cannot get data that isn\'t set';
+      }
+      return this._data;
+    },
+
+    onData: function(callback) {
+      if (this._data !== EMPTY_PROMISE) {
+        callback(this._data);
+      } else {
+        this.onDataCallback = callback;
+      }
+    },
+
+    resolve: function(data) {
+      if (this.isResolved) {
+        throw 'A Promise can be resolved only once ' + this.name;
+      }
+
+      this.isResolved = true;
+      this.data = data;
+      var callbacks = this.callbacks;
+
+      for (var i = 0; i < callbacks.length; i++) {
+        callbacks[i].call(null, data);
+      }
+    },
+
+    then: function(callback) {
+      if (!callback) {
+        throw 'Requiring callback' + this.name;
+      }
+
+      // If the promise is already resolved, call the callback directly.
+      if (this.isResolved) {
+        var data = this.data;
+        callback.call(null, data);
+      } else {
+        this.callbacks.push(callback);
+      }
+    }
+  };
+
+  return Promise;
+})();
+

src/utils/cffStandardStrings.js

@@ -1,8 +1,6 @@
 /* -*- 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 CFFEncodingMap = {
   '0': '-reserved-',
   '1': 'hstem',

src/utils/fonts_utils.js

@@ -1,8 +1,6 @@
 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
 
-'use strict';
-
 /*
  * The Type2 reader code below is only used for debugging purpose since Type2
  * is only a CharString format and is never used directly as a Font file.

src/worker.js

@@ -1,8 +1,48 @@
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
 
 'use strict';
 
+function MessageHandler(name, comObj) {
+  this.name = name;
+  this.comObj = comObj;
+  var ah = this.actionHandler = {};
+
+  ah['console_log'] = [function(data) {
+      console.log.apply(console, data);
+  }];
+  ah['console_error'] = [function(data) {
+      console.error.apply(console, data);
+  }];
+
+  comObj.onmessage = function(event) {
+    var data = event.data;
+    if (data.action in ah) {
+      var action = ah[data.action];
+      action[0].call(action[1], data.data);
+    } else {
+      throw 'Unkown action from worker: ' + data.action;
+    }
+  };
+}
+
+MessageHandler.prototype = {
+  on: function(actionName, handler, scope) {
+    var ah = this.actionHandler;
+    if (ah[actionName]) {
+      throw "There is already an actionName called '" + actionName + "'";
+    }
+    ah[actionName] = [handler, scope];
+  },
+
+  send: function(actionName, data) {
+    this.comObj.postMessage({
+      action: actionName,
+      data: data
+    });
+  }
+};
+
 var WorkerProcessorHandler = {
   setup: function(handler) {
     var pdfDoc = null;
@@ -82,11 +122,11 @@ var WorkerProcessorHandler = {
       var obj = new Font(font.name, font.file, font.properties);
 
       var str = '';
-      var data = obj.data;
+      var objData = obj.data;
-      if (data) {
+      if (objData) {
-        var length = data.length;
+        var length = objData.length;
-        for (var j = 0; j < length; j++)
+        for (var j = 0; j < length; ++j)
-          str += String.fromCharCode(data[j]);
+          str += String.fromCharCode(objData[j]);
       }
 
       obj.str = str;
@@ -99,3 +139,45 @@ var WorkerProcessorHandler = {
     });
   }
 };
+
+var consoleTimer = {};
+
+var workerConsole = {
+  log: function log() {
+    var args = Array.prototype.slice.call(arguments);
+    postMessage({
+      action: 'console_log',
+      data: args
+    });
+  },
+
+  error: function error() {
+    var args = Array.prototype.slice.call(arguments);
+    postMessage({
+      action: 'console_error',
+      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 thread?
+if (typeof window === 'undefined') {
+  globalScope.console = workerConsole;
+
+  // Listen for messages from the main thread.
+  var handler = new MessageHandler('worker_processor', globalScope);
+  WorkerProcessorHandler.setup(handler);
+}
+

src/worker_loader.js

@@ -0,0 +1,24 @@
+/* -*- 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('../src/core.js');
+importScripts('../src/util.js');
+importScripts('../src/canvas.js');
+importScripts('../src/obj.js');
+importScripts('../src/function.js');
+importScripts('../src/charsets.js');
+importScripts('../src/cidmaps.js');
+importScripts('../src/colorspace.js');
+importScripts('../src/crypto.js');
+importScripts('../src/evaluator.js');
+importScripts('../src/fonts.js');
+importScripts('../src/glyphlist.js');
+importScripts('../src/image.js');
+importScripts('../src/metrics.js');
+importScripts('../src/parser.js');
+importScripts('../src/pattern.js');
+importScripts('../src/stream.js');
+importScripts('../src/worker.js');
+

test/driver.js

@@ -82,7 +82,7 @@ function nextTask() {
   getPdf(task.file, function nextTaskGetPdf(data) {
     var failure;
     try {
-      task.pdfDoc = new PDFDoc(data);
+      task.pdfDoc = new PDFJS.PDFDoc(data);
     } catch (e) {
       failure = 'load PDF doc : ' + e.toString();
     }

test/test.py

@@ -318,7 +318,7 @@ def downloadLinkedPDFs(manifestList):
 
 def setUp(options):
     # Only serve files from a pdf.js clone
-    assert not ANAL or os.path.isfile('../pdf.js') and os.path.isdir('../.git')
+    assert not ANAL or os.path.isfile('../src/pdf.js') and os.path.isdir('../.git')
 
     if options.masterMode and os.path.isdir(TMPDIR):
         print 'Temporary snapshot dir tmp/ is still around.'

test/test_slave.html

@@ -3,16 +3,25 @@
   <head>
     <title>pdf.js test slave</title>
     <style type="text/css"></style>
-    <script type="text/javascript" src="/pdf.js"></script>
+    <script type="text/javascript" src="/src/core.js"></script> 
-    <script type="text/javascript" src="/fonts.js"></script>
+    <script type="text/javascript" src="/src/util.js"></script>  
-    <script type="text/javascript" src="/crypto.js"></script>
+    <script type="text/javascript" src="/src/canvas.js"></script>  
-    <script type="text/javascript" src="/glyphlist.js"></script>
+    <script type="text/javascript" src="/src/obj.js"></script>  
-    <script type="text/javascript" src="/metrics.js"></script>
+    <script type="text/javascript" src="/src/function.js"></script> 
-    <script type="text/javascript" src="/charsets.js"></script>
+    <script type="text/javascript" src="/src/charsets.js"></script>  
-    <script type="text/javascript" src="/cidmaps.js"></script>
+    <script type="text/javascript" src="/src/cidmaps.js"></script>  
+    <script type="text/javascript" src="/src/colorspace.js"></script>  
+    <script type="text/javascript" src="/src/crypto.js"></script>  
+    <script type="text/javascript" src="/src/evaluator.js"></script>  
+    <script type="text/javascript" src="/src/fonts.js"></script>  
+    <script type="text/javascript" src="/src/glyphlist.js"></script>  
+    <script type="text/javascript" src="/src/image.js"></script>  
+    <script type="text/javascript" src="/src/metrics.js"></script>  
+    <script type="text/javascript" src="/src/parser.js"></script>  
+    <script type="text/javascript" src="/src/pattern.js"></script>  
+    <script type="text/javascript" src="/src/stream.js"></script>  
+    <script type="text/javascript" src="/src/worker.js"></script>  
     <script type="text/javascript" src="driver.js"></script>
-    <script type="text/javascript" src="../worker/message_handler.js"></script>
-    <script type="text/javascript" src="../worker/processor_handler.js"></script>
   </head>
 
   <body>

web/.gitignore

@@ -0,0 +1 @@
+viewer-production.html

web/viewer-snippet.html

@@ -0,0 +1,2 @@
+<!-- This snippet is used in production, see Makefile -->
+<script type="text/javascript" src="../build/pdf.js"></script>

web/viewer.html

@@ -4,17 +4,29 @@
         <title>Simple pdf.js page viewer</title>
         <link rel="stylesheet" href="viewer.css"/>
         
+        <!-- PDFJSSCRIPT_INCLUDE_BUILD -->
+        
+        <script type="text/javascript" src="../src/core.js"></script> <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/util.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/canvas.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/obj.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/function.js"></script> <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/charsets.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/cidmaps.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/colorspace.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/crypto.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/evaluator.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/fonts.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/glyphlist.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/image.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/metrics.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/parser.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/pattern.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/stream.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+        <script type="text/javascript" src="../src/worker.js"></script>  <!-- PDFJSSCRIPT_REMOVE -->
+
         <script type="text/javascript" src="compatibility.js"></script>
         <script type="text/javascript" src="viewer.js"></script>
-        <script type="text/javascript" src="../pdf.js"></script>
-        <script type="text/javascript" src="../fonts.js"></script>
-        <script type="text/javascript" src="../crypto.js"></script>
-        <script type="text/javascript" src="../glyphlist.js"></script>
-        <script type="text/javascript" src="../metrics.js"></script>
-        <script type="text/javascript" src="../charsets.js"></script>
-        <script type="text/javascript" src="../cidmaps.js"></script>
-        <script type="text/javascript" src="../worker/message_handler.js"></script>
-        <script type="text/javascript" src="../worker/processor_handler.js"></script>
   </head>
 
   <body>

web/viewer.js

@@ -122,7 +122,7 @@ var PDFView = {
     document.title = this.url = url;
 
     var self = this;
-    getPdf(
+    PDFJS.getPdf(
       {
         url: url,
         progress: function getPdfProgress(evt) {
@@ -209,7 +209,7 @@ var PDFView = {
     while (container.hasChildNodes())
       container.removeChild(container.lastChild);
 
-    var pdf = new PDFDoc(data);
+    var pdf = new PDFJS.PDFDoc(data);
     var pagesCount = pdf.numPages;
     document.getElementById('numPages').innerHTML = pagesCount;
     document.getElementById('pageNumber').max = pagesCount;

worker/console.js

@@ -1,36 +0,0 @@
-/* -*- 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: 'console_log',
-      data: args
-    });
-  },
-
-  error: function error() {
-    var args = Array.prototype.slice.call(arguments);
-    postMessage({
-      action: 'console_error',
-      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/message_handler.js

@@ -1,46 +0,0 @@
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
-/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
-
-'use strict';
-
-
-function MessageHandler(name, comObj) {
-  this.name = name;
-  this.comObj = comObj;
-  var ah = this.actionHandler = {};
-
-  ah['console_log'] = [function(data) {
-      console.log.apply(console, data);
-  }];
-  ah['console_error'] = [function(data) {
-      console.error.apply(console, data);
-  }];
-
-  comObj.onmessage = function(event) {
-    var data = event.data;
-    if (data.action in ah) {
-      var action = ah[data.action];
-      action[0].call(action[1], data.data);
-    } else {
-      throw 'Unkown action from worker: ' + data.action;
-    }
-  };
-}
-
-MessageHandler.prototype = {
-  on: function(actionName, handler, scope) {
-    var ah = this.actionHandler;
-    if (ah[actionName]) {
-      throw "There is already an actionName called '" + actionName + "'";
-    }
-    ah[actionName] = [handler, scope];
-  },
-
-  send: function(actionName, data) {
-    this.comObj.postMessage({
-      action: actionName,
-      data: data
-    });
-  }
-};
-

worker/pdf_worker_loader.js

@@ -1,19 +0,0 @@
-/* -*- 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('message_handler.js');
-importScripts('../pdf.js');
-importScripts('../fonts.js');
-importScripts('../crypto.js');
-importScripts('../glyphlist.js');
-importScripts('../metrics.js');
-importScripts('processor_handler.js');
-
-// Listen for messages from the main thread.
-var pdfDoc = null;
-
-var handler = new MessageHandler('worker_processor', this);
-WorkerProcessorHandler.setup(handler);