Print Preview: Add option to rasterize PDFs and add JPEG compression.

chrome/browser/resources/print_preview/preview_generator.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Interface to the Chromium print preview generator.
    * @param {!print_preview.DestinationStore} destinationStore Used to get the
@@ skipping 68 matching lines @@
     this.isHeaderFooterEnabled_ = false;
 
     /**
      * Whether the previews are being generated in color.
      * @type {boolean}
      * @private
      */
     this.colorValue_ = false;
 
     /**
+     * Whether the document should be printed as a raster PDF.
+     * @type {boolean}
+     * @private
+     */
+    this.rasterizeValue_ = false;
+
+    /**
      * Whether the document should be fitted to the page.
      * @type {boolean}
      * @private
      */
     this.isFitToPageEnabled_ = false;
 
     /**
      * The scaling factor (in percent) for the document. Ignored if fit to page
      * is true.
      * @type {number}
@@ skipping 78 matching lines @@
         // Changes to these ticket items might not trigger a new preview, but
         // they still need to be recorded.
         this.marginsType_ = this.printTicketStore_.marginsType.getValue();
         return false;
       }
       this.mediaSize_ = this.printTicketStore_.mediaSize.getValue();
       this.isLandscapeEnabled_ = this.printTicketStore_.landscape.getValue();
       this.isHeaderFooterEnabled_ =
           this.printTicketStore_.headerFooter.getValue();
       this.colorValue_ = this.printTicketStore_.color.getValue();
+      this.rasterizeValue_ = this.printTicketStore_.rasterize.getValue();
       this.isFitToPageEnabled_ = this.printTicketStore_.fitToPage.getValue();
       this.scalingValue_ = this.printTicketStore_.scaling.getValueAsNumber();
       this.pageRanges_ = this.printTicketStore_.pageRange.getPageRanges();
       this.marginsType_ = this.printTicketStore_.marginsType.getValue();
       this.isCssBackgroundEnabled_ =
           this.printTicketStore_.cssBackground.getValue();
       this.isSelectionOnlyEnabled_ =
           this.printTicketStore_.selectionOnly.getValue();
       this.selectedDestination_ = this.destinationStore_.selectedDestination;
 
@@ skipping 80 matching lines @@
      *     determine whether a new preview request should be issued.
      * @private
      */
     hasPreviewChanged_: function() {
       var ticketStore = this.printTicketStore_;
       return this.inFlightRequestId_ == -1 ||
           !ticketStore.mediaSize.isValueEqual(this.mediaSize_) ||
           !ticketStore.landscape.isValueEqual(this.isLandscapeEnabled_) ||
           !ticketStore.headerFooter.isValueEqual(this.isHeaderFooterEnabled_) ||
           !ticketStore.color.isValueEqual(this.colorValue_) ||
+          !ticketStore.rasterize.isValueEqual(this.rasterizeValue_) ||
           !ticketStore.scaling.isValueEqual(this.scalingValue_) ||
           !ticketStore.fitToPage.isValueEqual(this.isFitToPageEnabled_) ||
           this.pageRanges_ == null ||
           !areRangesEqual(ticketStore.pageRange.getPageRanges(),
                           this.pageRanges_) ||
           (!ticketStore.marginsType.isValueEqual(this.marginsType_) &&
               !ticketStore.marginsType.isValueEqual(
                   print_preview.ticket_items.MarginsType.Value.CUSTOM)) ||
           (ticketStore.marginsType.isValueEqual(
               print_preview.ticket_items.MarginsType.Value.CUSTOM) &&
@@ skipping 107 matching lines @@
       // current one.
       cr.dispatchSimpleEvent(this, PreviewGenerator.EventType.FAIL);
     }
   };
 
   // Export
   return {
     PreviewGenerator: PreviewGenerator
   };
 });