| // 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 ui { |
| |
| // This class provides a simple helper for rasterizing from a PaintContext |
| // interface directly into a bitmap. 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 provided output bitmap. |
| // |
| // TODO(enne): rename this class to be PaintContextRasterizer or some such. |
| class COMPOSITOR_EXPORT CanvasPainter { |
| public: |
| CanvasPainter(SkBitmap* output, |
| const gfx::Size& output_size, |
| float device_scale_factor, |
| SkColor clear_color, |
| bool is_pixel_canvas); |
| ~CanvasPainter(); |
| |
| const PaintContext& context() const { return context_; } |
| |
| private: |
| friend class CanvasPainterTest; |
| |
| SkBitmap* const output_; |
| const gfx::Size pixel_output_size_; |
| const float raster_scale_; |
| const SkColor clear_color_; |
| scoped_refptr<cc::DisplayItemList> list_; |
| PaintContext context_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CanvasPainter); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_COMPOSITOR_CANVAS_PAINTER_H_ |