Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper_mac.mm

 // 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"
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
@@ skipping 19 matching lines @@
   if (!metafile.Init())
     return;
 
   float scale_factor = frame->getPrintPageShrink(params.page_number);
   int page_number = params.page_number;
   int page_slot = params.page_slot;
 
   // Render page for printing.
   gfx::Rect content_area(params.params.printable_size);
   RenderPage(params.params.printable_size, content_area, scale_factor,
-             page_number, page_slot, frame, &metafile);
+             page_number, page_slot, frame, false, &metafile);

[vandebo (ex-Chrome), 2011/08/01 21:07:37]

Same here.

[Aayush Kumar, 2011/08/02 00:18:13]

Done.

   metafile.FinishDocument();
 
   PrintHostMsg_DidPrintPage_Params page_params;
   page_params.data_size = metafile.GetDataSize();
   page_params.page_number = page_number;
   page_params.document_cookie = params.params.document_cookie;
   page_params.actual_shrink = scale_factor;
   page_params.page_size = params.params.page_size;
   page_params.content_area = gfx::Rect(params.params.margin_left,
                                        params.params.margin_top,
@@ skipping 24 matching lines @@
     if (!initial_render_metafile->Init()) {
       DidFinishPrinting(FAIL_PREVIEW);
       return;
     }
   }
 #endif
 
   base::TimeTicks begin_time = base::TimeTicks::Now();
   RenderPage(printParams.page_size, content_area, scale_factor, page_number,
              print_preview_context_.GetPageSlotForPage(page_number),
-             print_preview_context_.frame(), initial_render_metafile);
+             print_preview_context_.frame(), true, initial_render_metafile);
   print_preview_context_.RenderedPreviewPage(
       base::TimeTicks::Now() - begin_time);
 
   printing::Metafile* draft_metafile = NULL;
   if (print_preview_context_.IsModifiable()) {
 #if defined(USE_SKIA)
     draft_metafile = reinterpret_cast<printing::PreviewMetafile*>(
         print_preview_context_.metafile())->GetMetafileForCurrentPage();
 #else
     draft_metafile = initial_render_metafile;
@@ skipping 12 matching lines @@
                                true /*center_vertically*/);
 #endif
   }
 
   PreviewPageRendered(page_number, draft_metafile);
 }
 
 void PrintWebViewHelper::RenderPage(
     const gfx::Size& page_size, const gfx::Rect& content_area,
     const float& scale_factor, int page_number, int page_slot, WebFrame* frame,
-    printing::Metafile* metafile) {
+    bool is_preview, printing::Metafile* metafile) {
 
   {
 #if defined(USE_SKIA)
     SkDevice* device = metafile->StartPageForVectorCanvas(
         page_slot, page_size, content_area, scale_factor);
     if (!device)
       return;
 
     SkRefPtr<skia::VectorCanvas> canvas = new skia::VectorCanvas(device);
     canvas->unref();  // SkRefPtr and new both took a reference.
     WebKit::WebCanvas* canvasPtr = canvas.get();
     printing::MetafileSkiaWrapper::SetMetafileOnCanvas(canvasPtr, metafile);
 #else
     bool success = metafile->StartPage(page_size, content_area, scale_factor);
     DCHECK(success);
     // printPage can create autoreleased references to |context|. PDF contexts
     // don't write all their data until they are destroyed, so we need to make
     // certain that there are no lingering references.
     base::mac::ScopedNSAutoreleasePool pool;
     CGContextRef cgContext = metafile->context();
     CGContextRef canvasPtr = cgContext;
 #endif
-    frame->printPage(page_number, canvasPtr);
+    float webkit_scale_factor = frame->printPage(page_number, canvasPtr);
+#if defined(USE_SKIA)
+    PrintMsg_Print_Params printParams = print_preview_context_.print_params();
+    if (is_preview && printParams.display_header_footer) {
+      PageSizeMargins page_layout_in_points;
+      GetPageSizeAndMarginsInPoints(frame, page_number, printParams,
+                                    &page_layout_in_points);
+      // |page_number| is 0-based, so 1 is added.
+      PrintHeaderAndFooter(device, *canvas, page_number + 1,
+                           print_preview_context_.total_page_count(),
+                           webkit_scale_factor, page_layout_in_points,
+                           *header_footer_info_);
+    }
+#endif  // USE_SKIA
   }
 
   // Done printing. Close the device context to retrieve the compiled metafile.
   metafile->FinishPage();
 }