cc/output/software_output_device.h

   1 // Copyright 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 CC_OUTPUT_SOFTWARE_OUTPUT_DEVICE_H_
   6 #define CC_OUTPUT_SOFTWARE_OUTPUT_DEVICE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "cc/base/cc_export.h"
  10 #include "skia/ext/refptr.h"
  11 #include "ui/gfx/rect.h"
  12 #include "ui/gfx/size.h"
  13 #include "ui/gfx/vector2d.h"
  14 #include "ui/surface/transport_dib.h"
  15
  16 class SkBitmap;
  17 class SkDevice;
  18 class SkCanvas;
  19
  20 namespace cc {
  21
  22 class SoftwareFrameData;
  23
  24 // This is a "tear-off" class providing software drawing support to
  25 // OutputSurface, such as to a platform-provided window framebuffer.
  26 class CC_EXPORT SoftwareOutputDevice {
  27  public:
  28   SoftwareOutputDevice();
  29   virtual ~SoftwareOutputDevice();
  30
  31   // SoftwareOutputDevice implementation.
  32   virtual void Resize(gfx::Size size);
  33
  34   virtual SkCanvas* BeginPaint(gfx::Rect damage_rect);
  35   virtual void EndPaint(SoftwareFrameData* frame_data);
  36
  37   virtual void CopyToBitmap(gfx::Rect rect, SkBitmap* output);
  38   virtual void Scroll(gfx::Vector2d delta,
  39                       gfx::Rect clip_rect);
  40
  41   // TODO(skaslev) Remove this after UberCompositor lands.
  42   virtual void ReclaimDIB(const TransportDIB::Id& id);
  43
  44  protected:
  45   gfx::Size viewport_size_;
  46   gfx::Rect damage_rect_;
  47   skia::RefPtr<SkDevice> device_;
  48   skia::RefPtr<SkCanvas> canvas_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(SoftwareOutputDevice);
  51 };
  52
  53 }  // namespace cc
  54
  55 #endif  // CC_OUTPUT_SOFTWARE_OUTPUT_DEVICE_H_