ui/compositor/paint_recorder.h

   1 // Copyright 2015 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 UI_COMPOSITOR_PAINT_RECORDER_H_
   6 #define UI_COMPOSITOR_PAINT_RECORDER_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "skia/ext/refptr.h"
  11 #include "third_party/skia/include/core/SkPictureRecorder.h"
  12 #include "ui/compositor/compositor_export.h"
  13
  14 namespace cc {
  15 class DisplayItemList;
  16 }
  17
  18 namespace gfx {
  19 class Canvas;
  20 }
  21
  22 class SkCanvas;
  23
  24 namespace ui {
  25 class PaintContext;
  26
  27 // A class to hide the complexity behind setting up a recording into a
  28 // DisplayItem. This is meant to be short-lived within the scope of recording
  29 // taking place, the DisplayItem should be removed from the PaintRecorder once
  30 // recording is complete and can be cached.
  31 class COMPOSITOR_EXPORT PaintRecorder {
  32  public:
  33   explicit PaintRecorder(const PaintContext& context);
  34   ~PaintRecorder();
  35
  36   // Gets a gfx::Canvas for painting into.
  37   gfx::Canvas* canvas() { return canvas_; }
  38
  39  private:
  40   gfx::Canvas* canvas_;
  41   cc::DisplayItemList* list_;
  42   SkPictureRecorder recorder_;
  43   scoped_ptr<gfx::Canvas> owned_canvas_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(PaintRecorder);
  46 };
  47
  48 }  // namespace ui
  49
  50 #endif  // UI_COMPOSITOR_PAINT_RECORDER_H_