content/browser/renderer_host/backing_store_win.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_WIN_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_WIN_H_
   7
   8 #include <windows.h>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "content/browser/renderer_host/backing_store.h"
  13
  14 namespace content {
  15
  16 class BackingStoreWin : public BackingStore {
  17  public:
  18   BackingStoreWin(RenderWidgetHost* widget, const gfx::Size& size);
  19   virtual ~BackingStoreWin();
  20
  21   HDC hdc() { return hdc_; }
  22
  23   // Returns true if we should convert to the monitor profile when painting.
  24   static bool ColorManagementEnabled();
  25
  26   // BackingStore implementation.
  27   virtual size_t MemorySize() OVERRIDE;
  28   virtual void PaintToBackingStore(
  29       RenderProcessHost* process,
  30       TransportDIB::Id bitmap,
  31       const gfx::Rect& bitmap_rect,
  32       const std::vector<gfx::Rect>& copy_rects,
  33       float scale_factor,
  34       const base::Closure& completion_callback,
  35       bool* scheduled_completion_callback) OVERRIDE;
  36   virtual bool CopyFromBackingStore(const gfx::Rect& rect,
  37                                     skia::PlatformBitmap* output) OVERRIDE;
  38   virtual void ScrollBackingStore(const gfx::Vector2d& delta,
  39                                   const gfx::Rect& clip_rect,
  40                                   const gfx::Size& view_size) OVERRIDE;
  41
  42  private:
  43   // The backing store dc.
  44   HDC hdc_;
  45
  46   // Handle to the backing store dib.
  47   HANDLE backing_store_dib_;
  48
  49   // Handle to the original bitmap in the dc.
  50   HANDLE original_bitmap_;
  51
  52   // Number of bits per pixel of the screen.
  53   int color_depth_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(BackingStoreWin);
  56 };
  57
  58 }  // namespace content
  59
  60 #endif  // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_WIN_H_