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 "ui/compositor/compositor_export.h"
  12
  13 namespace cc {
  14 class DisplayItemList;
  15 }
  16
  17 namespace gfx {
  18 class Canvas;
  19 }
  20
  21 class SkCanvas;
  22 class SkPictureRecorder;
  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   const PaintContext& context_;
  41   gfx::Canvas* canvas_;
  42   scoped_ptr<gfx::Canvas> owned_canvas_;
  43
  44   DISALLOW_COPY_AND_ASSIGN(PaintRecorder);
  45 };
  46
  47 }  // namespace ui
  48
  49 #endif  // UI_COMPOSITOR_PAINT_RECORDER_H_