[Print Preview] Modified PP_PrintSettings_Dev interface to support auto fit to page functionality.

chrome/renderer/print_web_view_helper.h

Index: chrome/renderer/print_web_view_helper.h
diff --git a/chrome/renderer/print_web_view_helper.h b/chrome/renderer/print_web_view_helper.h
index 99eb0a99b5349c1e9875494d507e61a291d1a48a..0994d1fab3d4552e83d18bc6ae47de90062c3ed1 100644
--- a/chrome/renderer/print_web_view_helper.h
+++ b/chrome/renderer/print_web_view_helper.h
@@ -42,7 +42,8 @@ class PrepareFrameAndViewForPrint {
   // printed.
   PrepareFrameAndViewForPrint(const PrintMsg_Print_Params& print_params,
                               WebKit::WebFrame* frame,
-                              const WebKit::WebNode& node);
+                              const WebKit::WebNode& node,
+                              bool print_for_preview);

[dmichael (off chromium), 2012/04/19 20:11:46]

optional suggestion: I like using enums instead of bools for parameters to make
the call-sites self-documenting.

[kmadhusu, 2012/04/20 22:29:57]

Done. Added an enum param to specify the print scaling option. 

   ~PrepareFrameAndViewForPrint();
 
   void UpdatePrintParams(const PrintMsg_Print_Params& print_params);
@@ -62,17 +63,24 @@ class PrepareFrameAndViewForPrint {
   void FinishPrinting();
 
  private:
-  void StartPrinting(const gfx::Size& print_params);
+  void StartPrinting(const gfx::Size& canvas_size,
+                     const gfx::Rect& printable_area,
+                     const gfx::Size& paper_size,
+                     bool fit_pdf_page_to_paper_size);

[dmichael (off chromium), 2012/04/19 20:11:46]

ditto

[kmadhusu, 2012/04/20 22:29:57]

This bool is no longer required. So I removed from the param list.

 
   WebKit::WebFrame* frame_;
   WebKit::WebNode node_to_print_;
   WebKit::WebView* web_view_;
   gfx::Size print_canvas_size_;
+  gfx::Rect printable_area_;
+  gfx::Size paper_size_;
   gfx::Size prev_view_size_;
   gfx::Size prev_scroll_offset_;
   int dpi_;
   int expected_pages_count_;
   bool use_browser_overlays_;
+  bool fit_pdf_page_to_paper_size_;
+  bool print_for_preview_;
   bool finished_;
 
   DISALLOW_COPY_AND_ASSIGN(PrepareFrameAndViewForPrint);