1 // Copyright 2012 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_LAYERS_NINE_PATCH_LAYER_H_ 6 #define CC_LAYERS_NINE_PATCH_LAYER_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "cc/base/cc_export.h" 10 #include "cc/layers/layer.h" 11 #include "cc/resources/image_layer_updater.h" 12 #include "third_party/skia/include/core/SkBitmap.h" 13 #include "ui/gfx/rect.h" 14 15 namespace cc { 16 17 class ResourceUpdateQueue; 18 19 class CC_EXPORT NinePatchLayer : public Layer { 20 public: 21 static scoped_refptr<NinePatchLayer> Create(); 22 23 virtual bool DrawsContent() const OVERRIDE; 24 virtual void SetTexturePriorities(const PriorityCalculator& priority_calc) 25 OVERRIDE; 26 virtual bool Update(ResourceUpdateQueue* queue, 27 const OcclusionTracker* occlusion) OVERRIDE; 28 virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; 29 30 // aperture is in the pixel space of the bitmap resource and refers to 31 // the center patch of the ninepatch (which is unused in this 32 // implementation). We split off eight rects surrounding it and stick them 33 // on the edges of the layer. The corners are unscaled, the top and bottom 34 // rects are x-stretched to fit, and the left and right rects are 35 // y-stretched to fit. 36 void SetBitmap(const SkBitmap& bitmap, gfx::Rect aperture); 37 38 private: 39 NinePatchLayer(); 40 virtual ~NinePatchLayer(); 41 virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) 42 OVERRIDE; 43 44 void CreateUpdaterIfNeeded(); 45 void CreateResource(); 46 47 scoped_refptr<ImageLayerUpdater> updater_; 48 scoped_ptr<LayerUpdater::Resource> resource_; 49 50 SkBitmap bitmap_; 51 bool bitmap_dirty_; 52 53 // The transparent center region that shows the parent layer's contents in 54 // image space. 55 gfx::Rect image_aperture_; 56 57 DISALLOW_COPY_AND_ASSIGN(NinePatchLayer); 58 }; 59 60 } // namespace cc 61 62 #endif // CC_LAYERS_NINE_PATCH_LAYER_H_ 63
