Expose webkit scaling factor before calling WebFrame::PrintPage()

webkit/glue/webframe.h

 // Copyright (c) 2006-2008 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 WEBKIT_GLUE_WEBFRAME_H_
 #define WEBKIT_GLUE_WEBFRAME_H_
 
 #include "base/scoped_ptr.h"
 #include "googleurl/src/gurl.h"
 #include "skia/ext/bitmap_platform_device.h"
@@ skipping 359 matching lines @@
 
   // Reformats the web frame for printing. |page_size_px| is the page size in
   // pixels.
   // |width| is the resulting document width in pixel.
   // |page_count| is the number of printed pages.
   // Returns false if it fails. It'll fail if the main frame failed to load but
   // will succeed even if a child frame failed to load.
   virtual bool BeginPrint(const WebKit::WebSize& page_size_px,
                           int* page_count) = 0;
 
+  // Returns the page shrinking factor calculated by webkit (usually between
+  // 1/1.25 and 1/2). Returns 0 if the page number is invalid or not in printing
+  // mode.
+  virtual float GetPrintPageShrink(int page) =0;

[M-A Ruel, 2009/04/27 18:41:13]

spacing is "...) = 0;"

+
   // Prints one page. |page| is 0-based.
   // Returns the page shrinking factor calculated by webkit (usually between
   // 1/1.25 and 1/2). Returns 0 if the page number is invalid or not in printing
   // mode.
   virtual float PrintPage(int page, skia::PlatformCanvas* canvas) = 0;
 
   // Reformats the web frame for screen display.
   virtual void EndPrint() = 0;
 
   // Initiates app cache selection for the context with the resource currently
   // committed in the webframe.
   virtual void SelectAppCacheWithoutManifest() = 0;
   virtual void SelectAppCacheWithManifest(const GURL& manifest_url) = 0;
 
   // Returns a pointer to the WebAppCacheContext for this frame.
   virtual WebAppCacheContext* GetAppCacheContext() const = 0;
 
   // Only for test_shell
   virtual int PendingFrameUnloadEventCount() const = 0;
 
  protected:
   virtual ~WebFrame() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebFrame);
 };
 
 #endif  // WEBKIT_GLUE_WEBFRAME_H_