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"
 #include "chrome/common/print_messages.h"
 #include "printing/metafile.h"
 #include "printing/metafile_impl.h"
 #include "printing/metafile_skia_wrapper.h"
 #include "printing/units.h"
 #include "skia/ext/vector_canvas.h"
 #include "skia/ext/vector_platform_device_emf_win.h"
+#include "skia/ext/vector_platform_device_skia.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "ui/gfx/gdi_util.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 using printing::ConvertUnit;
 using printing::ConvertUnitDouble;
 using printing::kPointsPerInch;
@@ skipping 150 matching lines @@
   // 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) {
+    // |page_number| is 0-based, so 1 is added.
+    PrintHeaderAndFooter(static_cast<skia::VectorPlatformDeviceSkia*>(device),

[vandebo (ex-Chrome), 2011/07/26 06:11:37]

I didn't realize that doing the casting outside the function was going to lead
to including vector_platform_device_skia.h in all three platform files.  Go
ahead and do the cast in PrintHeaderAndFooter.

[Aayush Kumar, 2011/07/26 07:37:33]

Done.

+                         *canvas, page_number + 1,
+                         print_preview_context_.total_page_count(),
+                         webkit_scale_factor, page_layout_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;
 }