Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper_win.cc

 // Copyright (c) 2011 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 "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/process_util.h"
@@ skipping 127 matching lines @@
   // Release since |print_preview_context_| is the real owner.
   metafile.release();
   print_preview_context_.RenderedPreviewPage(
       base::TimeTicks::Now() - begin_time);
   PreviewPageRendered(page_number);
 }
 
 void PrintWebViewHelper::RenderPage(
     const PrintMsg_Print_Params& params, float* scale_factor, int page_number,
     bool is_preview, WebFrame* frame, scoped_ptr<Metafile>* metafile) {
-  double content_width_in_points;
-  double content_height_in_points;
-  double margin_top_in_points;
-  double margin_left_in_points;
-  GetPageSizeAndMarginsInPoints(frame, page_number, params,
-                                &content_width_in_points,
-                                &content_height_in_points,
-                                &margin_top_in_points, NULL, NULL,
-                                &margin_left_in_points);
+  PageSizeMargins page_size_margins_in_points =
+      GetPageSizeAndMarginsInPoints(frame, page_number, params);
 
   int width;
   int height;
   if (is_preview) {
     int dpi = static_cast<int>(params.dpi);
     int desired_dpi = printing::kPointsPerInch;
     width = ConvertUnit(params.page_size.width(), dpi, desired_dpi);
     height = ConvertUnit(params.page_size.height(), dpi, desired_dpi);
   } else {
     // Since WebKit extends the page width depending on the magical scale factor
     // we make sure the canvas covers the worst case scenario (x2.0 currently).
     // PrintContext will then set the correct clipping region.
-    width = static_cast<int>(content_width_in_points * params.max_shrink);
-    height = static_cast<int>(content_height_in_points * params.max_shrink);
+    width = static_cast<int>(page_size_margins_in_points.content_width *
+                             params.max_shrink);
+    height = static_cast<int>(page_size_margins_in_points.content_height *
+                              params.max_shrink);
   }
 
   gfx::Size page_size(width, height);
-  gfx::Rect content_area(static_cast<int>(margin_left_in_points),
-                         static_cast<int>(margin_top_in_points),
-                         static_cast<int>(content_width_in_points),
-                         static_cast<int>(content_height_in_points));
+  gfx::Rect content_area(
+      static_cast<int>(page_size_margins_in_points.margin_left),
+      static_cast<int>(page_size_margins_in_points.margin_top),
+      static_cast<int>(page_size_margins_in_points.content_width),
+      static_cast<int>(page_size_margins_in_points.content_height));
   SkDevice* device = (*metafile)->StartPageForVectorCanvas(
       page_size, content_area, frame->getPrintPageShrink(page_number));
   DCHECK(device);
   // The printPage method may take a reference to the canvas we pass down, so it
   // can't be a stack object.
   SkRefPtr<skia::VectorCanvas> canvas = new skia::VectorCanvas(device);
   canvas->unref();  // SkRefPtr and new both took a reference.
   if (is_preview) {
     printing::MetafileSkiaWrapper::SetMetafileOnCanvas(canvas.get(),
                                                        metafile->get());
   }
 
   float webkit_scale_factor = frame->printPage(page_number, canvas.get());
+
+  if (is_preview && params.display_header_footer) {
+    // The page_number count starts from 0, so we add 1.
+    PrintHeaderAndFooter(static_cast<skia::VectorPlatformDeviceSkia*>(device),
+                         canvas, page_number + 1,
+                         print_preview_context_.total_page_count(),
+                         webkit_scale_factor, page_size_margins_in_points,
+                         header_footer_info_);
+  }
+
   if (*scale_factor <= 0 || webkit_scale_factor <= 0) {
     NOTREACHED() << "Printing page " << page_number << " failed.";
   } else {
     // Update the dpi adjustment with the "page |scale_factor|" calculated in
     // webkit.
     *scale_factor /= webkit_scale_factor;
   }
 
   bool result = (*metafile)->FinishPage();
   DCHECK(result);
@@ skipping 76 matching lines @@
   // Copy the bits into shared memory.
   if (!metafile->GetData(shared_buf.memory(), buf_size)) {
     NOTREACHED() << "GetData() failed";
     shared_buf.Unmap();
     return false;
   }
   shared_buf.GiveToProcess(base::GetCurrentProcessHandle(), shared_mem_handle);
   shared_buf.Unmap();
   return true;
 }