| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_COMPOSITOR_CANVAS_PAINTER_H_ |
| #define UI_COMPOSITOR_CANVAS_PAINTER_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "ui/compositor/compositor_export.h" |
| #include "ui/compositor/paint_context.h" |
| #include "ui/gfx/geometry/rect.h" |
| |
| namespace cc { |
| class DisplayItemList; |
| } |
| |
| namespace gfx { |
| class Canvas; |
| } |
| |
| namespace ui { |
| |
| // This class provides a simple helper for painting directly to a bitmap |
| // backed canvas (for painting use-cases other than compositing). After |
| // constructing an instance of a CanvasPainter, the context() can be used |
| // to do painting using the normal composited paint paths. When |
| // the painter is destroyed, any painting done with the context() will be |
| // rastered into the canvas. |
| class COMPOSITOR_EXPORT CanvasPainter { |
| public: |
| CanvasPainter(gfx::Canvas* canvas, float raster_scale_factor); |
| ~CanvasPainter(); |
| |
| const PaintContext& context() const { return context_; } |
| |
| private: |
| gfx::Canvas* const canvas_; |
| const float raster_scale_factor_; |
| const gfx::Rect rect_; |
| scoped_refptr<cc::DisplayItemList> list_; |
| PaintContext context_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CanvasPainter); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_COMPOSITOR_CANVAS_PAINTER_H_ |