1 // Copyright 2011 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 CC_RESOURCES_CONTENT_LAYER_UPDATER_H_ 6 #define CC_RESOURCES_CONTENT_LAYER_UPDATER_H_ 7 8 #include "cc/base/cc_export.h" 9 #include "cc/resources/layer_updater.h" 10 #include "ui/gfx/rect.h" 11 12 class SkCanvas; 13 14 namespace cc { 15 16 class LayerPainter; 17 class RenderingStatsInstrumentation; 18 19 // Base class for BitmapContentLayerUpdater and 20 // SkPictureContentLayerUpdater that reduces code duplication between 21 // their respective PaintContents implementations. 22 class CC_EXPORT ContentLayerUpdater : public LayerUpdater { 23 public: 24 void set_rendering_stats_instrumentation(RenderingStatsInstrumentation* rsi); 25 virtual void SetOpaque(bool opaque) OVERRIDE; 26 virtual void SetFillsBoundsCompletely(bool fills_bounds) OVERRIDE; 27 28 protected: 29 ContentLayerUpdater(scoped_ptr<LayerPainter> painter, 30 RenderingStatsInstrumentation* stats_instrumentation, 31 int layer_id); 32 virtual ~ContentLayerUpdater(); 33 34 void PaintContents(SkCanvas* canvas, 35 const gfx::Rect& content_rect, 36 float contents_width_scale, 37 float contents_height_scale, 38 gfx::Rect* resulting_opaque_rect); content_rect()39 gfx::Rect content_rect() const { return content_rect_; } 40 layer_is_opaque()41 bool layer_is_opaque() const { return layer_is_opaque_; } layer_fills_bounds_completely()42 bool layer_fills_bounds_completely() const { 43 return layer_fills_bounds_completely_; 44 } 45 46 RenderingStatsInstrumentation* rendering_stats_instrumentation_; 47 int layer_id_; 48 49 // True when it is known that all output pixels will be opaque. 50 bool layer_is_opaque_; 51 // True when it is known that all output pixels will be filled. 52 bool layer_fills_bounds_completely_; 53 54 private: 55 gfx::Rect content_rect_; 56 scoped_ptr<LayerPainter> painter_; 57 58 DISALLOW_COPY_AND_ASSIGN(ContentLayerUpdater); 59 }; 60 61 } // namespace cc 62 63 #endif // CC_RESOURCES_CONTENT_LAYER_UPDATER_H_ 64