Rasterize page before printing.

chrome/renderer/print_web_view_helper.cc

 // 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.
 
 #include "chrome/renderer/print_web_view_helper.h"
 
 #include <string>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 86 matching lines @@
   return printing::kPointsPerInch;
 #else
   return static_cast<int>(print_params->dpi);
 #endif  // defined(OS_MACOSX)
 }
 
 bool PrintMsg_Print_Params_IsValid(const PrintMsg_Print_Params& params) {
   return !params.content_size.IsEmpty() && !params.page_size.IsEmpty() &&
          !params.printable_area.IsEmpty() && params.document_cookie &&
          params.desired_dpi && params.max_shrink && params.min_shrink &&
-         params.dpi && (params.margin_top >= 0) && (params.margin_left >= 0);
+         params.dpi && (params.margin_top >= 0) && (params.margin_left >= 0) &&
+         params.raster_size > 0;
 }
 
 bool PageLayoutIsEqual(const PrintMsg_PrintPages_Params& oldParams,
                        const PrintMsg_PrintPages_Params& newParams) {
   return oldParams.params.content_size == newParams.params.content_size &&
          oldParams.params.printable_area == newParams.params.printable_area &&
          oldParams.params.page_size == newParams.params.page_size &&
          oldParams.params.margin_top == newParams.params.margin_top &&
          oldParams.params.margin_left == newParams.params.margin_left &&
          oldParams.params.desired_dpi == newParams.params.desired_dpi &&
@@ skipping 12 matching lines @@
          oldParams.pages.size() == newParams.pages.size() &&
          oldParams.params.print_to_pdf == newParams.params.print_to_pdf &&
          oldParams.params.print_scaling_option ==
              newParams.params.print_scaling_option &&
          oldParams.params.display_header_footer ==
              newParams.params.display_header_footer &&
          oldParams.params.date == newParams.params.date &&
          oldParams.params.title == newParams.params.title &&
          oldParams.params.url == newParams.params.url &&
          std::equal(oldParams.pages.begin(), oldParams.pages.end(),
-             newParams.pages.begin());
+             newParams.pages.begin()) &&
+         oldParams.params.raster_type == newParams.params.raster_type &&
+         oldParams.params.raster_size == newParams.params.raster_size;
 }
 
 PrintMsg_Print_Params GetCssPrintParams(
     WebFrame* frame,
     int page_index,
     const PrintMsg_Print_Params& page_params) {
   PrintMsg_Print_Params page_css_params = page_params;
   int dpi = GetDPI(&page_params);
   WebSize page_size_in_pixels(
       ConvertUnit(page_params.page_size.width(),
@@ skipping 1729 matching lines @@
   DCHECK(IsRendering());
   return prep_frame_view_->GetPrintCanvasSize();
 }
 
 void PrintWebViewHelper::PrintPreviewContext::ClearContext() {
   prep_frame_view_.reset();
   metafile_.reset();
   pages_to_render_.clear();
   error_ = PREVIEW_ERROR_NONE;
 }