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_SKPICTURE_CONTENT_LAYER_UPDATER_H_ 6 #define CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_ 7 8 #include "cc/resources/content_layer_updater.h" 9 #include "skia/ext/refptr.h" 10 #include "third_party/skia/include/core/SkPicture.h" 11 12 class SkCanvas; 13 14 namespace cc { 15 16 class LayerPainter; 17 18 // This class records the content_rect into an SkPicture. Subclass provides 19 // SkCanvas to DrawPicture() for tile updating based on this recorded picture. 20 class SkPictureContentLayerUpdater : public ContentLayerUpdater { 21 protected: 22 SkPictureContentLayerUpdater( 23 scoped_ptr<LayerPainter> painter, 24 RenderingStatsInstrumentation* stats_instrumentation, 25 int layer_id); 26 virtual ~SkPictureContentLayerUpdater(); 27 28 virtual void PrepareToUpdate(const gfx::Size& content_size, 29 const gfx::Rect& paint_rect, 30 const gfx::Size& tile_size, 31 float contents_width_scale, 32 float contents_height_scale) OVERRIDE; 33 void DrawPicture(SkCanvas* canvas); 34 35 private: 36 skia::RefPtr<SkPicture> picture_; 37 38 DISALLOW_COPY_AND_ASSIGN(SkPictureContentLayerUpdater); 39 }; 40 41 } // namespace cc 42 43 #endif // CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_ 44