Move margin processing code to the browser process.

printing/page_setup.h

 // 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.
 
 #ifndef PRINTING_PAGE_SETUP_H_
 #define PRINTING_PAGE_SETUP_H_
 
 #include "printing/printing_export.h"
 #include "ui/gfx/rect.h"
 
@@ skipping 28 matching lines @@
   ~PageSetup();
 
   void Clear();
 
   // Equality operator.
   bool Equals(const PageSetup& rhs) const;
 
   void Init(const gfx::Size& physical_size, const gfx::Rect& printable_area,
             int text_height);
 
+  // Use |requested_margins| as long as they fall inside the printable area.
   void SetRequestedMargins(const PageMargins& requested_margins);
 
+  // Ignore the printable area, and set the margins to |requested_margins|.
+  void ForceRequestedMargins(const PageMargins& requested_margins);
+
   // Flips the orientation of the page and recalculates all page areas.
   void FlipOrientation();
 
   const gfx::Size& physical_size() const { return physical_size_; }
   const gfx::Rect& overlay_area() const { return overlay_area_; }
   const gfx::Rect& content_area() const { return content_area_; }
   const gfx::Rect& printable_area() const { return printable_area_; }
   const PageMargins& effective_margins() const {
     return effective_margins_;
   }
 
  private:
+  // Calculate overlay_area_, effective_margins_, and content_area_, based on
+  // a contstraint of |printable_area|

[Lei Zhang, 2011/10/15 03:42:19]

nit: contstraint -> constraint, printable_area -> bounds

[vandebo (ex-Chrome), 2011/10/15 20:52:08]

Done.

+  void CalculateSizesWithinRect(const gfx::Rect& bounds);
+
   // Physical size of the page, including non-printable margins.
   gfx::Size physical_size_;
 
   // The printable area as specified by the printer driver. We can't get
   // larger than this.
   gfx::Rect printable_area_;
 
   // The printable area for headers and footers.
   gfx::Rect overlay_area_;
 
   // The printable area as selected by the user's margins.
   gfx::Rect content_area_;
 
   // Effective margins.
   PageMargins effective_margins_;
 
   // Requested margins.
   PageMargins requested_margins_;
 
   // Space that must be kept free for the overlays.
   int text_height_;
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PAGE_SETUP_H_