Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper_linux.cc

Index: chrome/renderer/print_web_view_helper_linux.cc
diff --git a/chrome/renderer/print_web_view_helper_linux.cc b/chrome/renderer/print_web_view_helper_linux.cc
index 27667d63c2afc8fe5c9f8943500504bfc04ee119..f89fa14e8c650cc903a64fe8c05d57db4c5ad3f5 100644
--- a/chrome/renderer/print_web_view_helper_linux.cc
+++ b/chrome/renderer/print_web_view_helper_linux.cc
@@ -36,6 +36,7 @@ void PrintWebViewHelper::RenderPreviewPage(int page_number) {
   PrintPageInternal(page_params,
                     print_preview_context_.GetPrintCanvasSize(),
                     print_preview_context_.frame(),
+                    true,
                     print_preview_context_.metafile());
 
   print_preview_context_.RenderedPreviewPage(
@@ -163,13 +164,13 @@ bool PrintWebViewHelper::RenderPages(const PrintMsg_PrintPages_Params& params,
     for (int i = 0; i < *page_count; ++i) {
       page_params.page_number = i;
       page_params.page_slot = i;
-      PrintPageInternal(page_params, canvas_size, frame, metafile);
+      PrintPageInternal(page_params, canvas_size, frame, false, metafile);

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

Instead of changing the signature of this method, why not just set
params.params.display_header_footer = false before the for loop?

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

Done.

     }
   } else {
     for (size_t i = 0; i < params.pages.size(); ++i) {
       page_params.page_number = params.pages[i];
       page_params.page_slot = i;
-      PrintPageInternal(page_params, canvas_size, frame, metafile);
+      PrintPageInternal(page_params, canvas_size, frame, false, metafile);
     }
   }
 
@@ -184,6 +185,7 @@ void PrintWebViewHelper::PrintPageInternal(
     const PrintMsg_PrintPage_Params& params,
     const gfx::Size& canvas_size,
     WebFrame* frame,
+    bool is_preview,
     printing::Metafile* metafile) {
   PageSizeMargins page_layout_in_points;
   GetPageSizeAndMarginsInPoints(frame, params.page_number, params.params,
@@ -213,7 +215,13 @@ void PrintWebViewHelper::PrintPageInternal(
   printing::MetafileSkiaWrapper::SetMetafileOnCanvas(canvas.get(), metafile);
   frame->printPage(params.page_number, canvas.get());
 
-  // TODO(myhuang): We should render the header and the footer.
+  if (is_preview && params.params.display_header_footer) {
+    // |page_number| is 0-based, so 1 is added.
+    // The scale factor on Linux is 1.
+    PrintHeaderAndFooter(device, *canvas, params.page_number + 1,
+                         print_preview_context_.total_page_count(), 1,
+                         page_layout_in_points, *header_footer_info_);
+  }
 
   // Done printing. Close the device context to retrieve the compiled metafile.
   if (!metafile->FinishPage())