Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper.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 <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 66 matching lines @@
          oldParams.params.min_shrink == newParams.params.min_shrink &&
          oldParams.params.dpi == newParams.params.dpi &&
          oldParams.params.printable_size == newParams.params.printable_size &&
          oldParams.params.selection_only == newParams.params.selection_only &&
          oldParams.params.page_size == newParams.params.page_size &&
          oldParams.params.margin_top == newParams.params.margin_top &&
          oldParams.params.margin_left == newParams.params.margin_left &&
          oldParams.params.supports_alpha_blend ==
              newParams.params.supports_alpha_blend &&
          oldParams.pages.size() == newParams.pages.size() &&
+         oldParams.params.header_footer ==
+             newParams.params.header_footer &&
          std::equal(oldParams.pages.begin(), oldParams.pages.end(),
              newParams.pages.begin());
 }
 
 }  // namespace
 
 PrepareFrameAndViewForPrint::PrepareFrameAndViewForPrint(
     const PrintMsg_Print_Params& print_params,
     WebFrame* frame,
     WebNode* node,
@@ skipping 50 matching lines @@
 }
 
 PrintWebViewHelper::PrintWebViewHelper(RenderView* render_view)
     : RenderViewObserver(render_view),
       RenderViewObserverTracker<PrintWebViewHelper>(render_view),
       print_web_view_(NULL),
       script_initiated_preview_frame_(NULL),
       context_menu_preview_node_(NULL),
       user_cancelled_scripted_print_count_(0),
       notify_browser_of_print_failure_(true),
-      preview_page_count_(0) {
+      preview_page_count_(0),
+      header_footer_interstice(7.2) {

[Lei Zhang, 2011/07/12 22:04:50]

where does this magical 7.2 value come from?

[Aayush Kumar, 2011/07/13 21:52:16]

Moved declaration of constant to job_constants.
On 2011/07/12 22:04:50, Lei Zhang wrote:

   is_preview_ = switches::IsPrintPreviewEnabled();
 }
 
 PrintWebViewHelper::~PrintWebViewHelper() {}
 
 // Prints |frame| which called window.print().
 void PrintWebViewHelper::PrintPage(WebKit::WebFrame* frame) {
   DCHECK(frame);
 
   // Allow Prerendering to cancel this print request if necessary.
@@ skipping 87 matching lines @@
       render_view()->webview()->mainFrame();
   return true;
 }
 
 void PrintWebViewHelper::OnPrintPages() {
   WebFrame* frame;
   if (GetPrintFrame(&frame))
     Print(frame, NULL);
 }
 
-void PrintWebViewHelper::OnPrintPreview(const DictionaryValue& settings) {
+void PrintWebViewHelper::OnPrintPreview(const DictionaryValue& settings,
+    const DictionaryValue& header_footer_info) {
   DCHECK(is_preview_);
   DCHECK(!context_menu_preview_node_.get() || !script_initiated_preview_frame_);
 
+  header_footer_info_ = header_footer_info.DeepCopy();
+
   if (script_initiated_preview_frame_) {
     // Script initiated print preview.
     PrintPreview(script_initiated_preview_frame_, NULL, settings);
   } else if (context_menu_preview_node_.get()) {
     // User initiated - print node under context menu.
     PrintPreview(context_menu_preview_node_->document().frame(),
                  context_menu_preview_node_.get(), settings);
   } else {
     // User initiated - normal print preview.
     WebFrame* frame;
@@ skipping 529 matching lines @@
   Send(new PrintHostMsg_RequestPrintPreview(routing_id()));
 }
 
 bool PrintWebViewHelper::PreviewPageRendered(int page_number) {
   bool cancel = false;
   Send(new PrintHostMsg_DidPreviewPage(routing_id(), page_number, &cancel));
   if (cancel)
     notify_browser_of_print_failure_ = false;
   return !cancel;
 }