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 "ui/compositor/compositor_export.h"
  10
  11 namespace gfx {
  12 class Canvas;
  13 }
  14
  15 namespace ui {
  16 class PaintContext;
  17
  18 // A class to hide the complexity behind setting up a recording into a
  19 // DisplayItem. This is meant to be short-lived within the scope of recording
  20 // taking place, the DisplayItem should be removed from the PaintRecorder once
  21 // recording is complete and can be cached.
  22 class COMPOSITOR_EXPORT PaintRecorder {
  23  public:
  24   explicit PaintRecorder(const PaintContext& context);
  25   ~PaintRecorder();
  26
  27   // Gets a gfx::Canvas for painting into.
  28   gfx::Canvas* canvas() { return canvas_; }
  29
  30  private:
  31   gfx::Canvas* canvas_;
  32
  33   DISALLOW_COPY_AND_ASSIGN(PaintRecorder);
  34 };
  35
  36 }  // namespace ui
  37
  38 #endif  // UI_COMPOSITOR_PAINT_RECORDER_H_