Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper.h

 // 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.
 
 #ifndef CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #pragma once
 
 #include <utility>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/shared_memory.h"
 #include "base/time.h"
 #include "content/renderer/render_view_observer.h"
 #include "content/renderer/render_view_observer_tracker.h"
 #include "printing/metafile.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebViewClient.h"
 #include "ui/gfx/size.h"
 
 struct PrintMsg_Print_Params;
 struct PrintMsg_PrintPage_Params;
 struct PrintMsg_PrintPages_Params;
 
 namespace base {
 class DictionaryValue;
 }
+#if defined(USE_SKIA)
+namespace skia {
+class VectorCanvas;
+}
+#endif
 
 // Class that calls the Begin and End print functions on the frame and changes
 // the size of the view temporarily to support full page printing..
 // Do not serve any events in the time between construction and destruction of
 // this class because it will cause flicker.
 class PrepareFrameAndViewForPrint {
  public:
   // Prints |frame|.  If |node| is not NULL, then only that node will be
   // printed.
   PrepareFrameAndViewForPrint(const PrintMsg_Print_Params& print_params,
@@ skipping 213 matching lines @@
       int page_index,
       const PrintMsg_Print_Params& default_params,
       PageSizeMargins* page_layout_in_points);
 
   static void UpdatePrintableSizeInPrintParameters(
       WebKit::WebFrame* frame,
       WebKit::WebNode* node,
       PrepareFrameAndViewForPrint* prepare,
       PrintMsg_Print_Params* params);
 
+#if defined(USE_SKIA)
+  // Given the |device| and |canvas| to draw on, prints the appropriate headers
+  // and footers using strings from |header_footer_info| on to the canvas.
+  static void PrintHeaderAndFooter(
+      SkDevice* device,
+      skia::VectorCanvas* canvas,
+      int page_number,
+      int total_pages,
+      float webkit_scale_factor,
+      const PageSizeMargins& page_layout_in_points,
+      const base::DictionaryValue& header_footer_info);
+#endif  // USE_SKIA
+
   bool GetPrintFrame(WebKit::WebFrame** frame);
 
   // This reports the current time - |start_time| as the time to render a page.
   void ReportPreviewPageRenderTime(base::TimeTicks start_time);
 
   // Script Initiated Printing ------------------------------------------------
 
   // Returns true if script initiated printing occurs too often.
   bool IsScriptInitiatedPrintTooFrequent(WebKit::WebFrame* frame);
 
@@ skipping 23 matching lines @@
   // Used for scripted initiated printing blocking.
   base::Time last_cancelled_script_print_;
   int user_cancelled_scripted_print_count_;
 
   // Let the browser process know of a printing failure. Only set to false when
   // the failure came from the browser in the first place.
   bool notify_browser_of_print_failure_;
 
   scoped_ptr<PrintMsg_PrintPages_Params> old_print_pages_params_;
 
+  // Contains strings generated by the browser process to be printed as headers
+  // and footers if requested by the user.
+  scoped_ptr<base::DictionaryValue> header_footer_info_;
+
   // Keeps track of the state of print preview between messages.
   class PrintPreviewContext {
    public:
     PrintPreviewContext();
     ~PrintPreviewContext();
 
     // Initializes the print preview context. Need to be called to set
     // the |web_frame| / |web_node| to generate the print preview for.
     void InitWithFrame(WebKit::WebFrame* web_frame);
     void InitWithNode(const WebKit::WebNode& web_node);
@@ skipping 70 matching lines @@
 
     State state_;
   };
 
   PrintPreviewContext print_preview_context_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_