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_IMPL_H_ 6 #define CC_LAYERS_NINE_PATCH_LAYER_IMPL_H_ 7 8 #include <string> 9 10 #include "cc/base/cc_export.h" 11 #include "cc/layers/layer_impl.h" 12 #include "cc/layers/ui_resource_layer_impl.h" 13 #include "cc/resources/resource_provider.h" 14 #include "cc/resources/ui_resource_client.h" 15 #include "ui/gfx/rect.h" 16 #include "ui/gfx/size.h" 17 18 namespace base { 19 class DictionaryValue; 20 } 21 22 namespace cc { 23 24 class CC_EXPORT NinePatchLayerImpl : public UIResourceLayerImpl { 25 public: Create(LayerTreeImpl * tree_impl,int id)26 static scoped_ptr<NinePatchLayerImpl> Create(LayerTreeImpl* tree_impl, 27 int id) { 28 return make_scoped_ptr(new NinePatchLayerImpl(tree_impl, id)); 29 } 30 virtual ~NinePatchLayerImpl(); 31 32 // The bitmap stretches out the bounds of the layer. The following picture 33 // illustrates the parameters associated with the dimensions. 34 // 35 // Layer space layout Bitmap space layout 36 // 37 // ------------------------ ~~~~~~~~~~ W ~~~~~~~~~~ 38 // | : | : : | 39 // | C | : Y | 40 // | : | : : | 41 // | ------------ | :~~X~~------------ | 42 // | | | | : | : | 43 // | | | | : | : | 44 // |~~A~~| |~~B~~| H | Q | 45 // | | | | : | : | 46 // | ------------ | : ~~~~~P~~~~~ | 47 // | : | : | 48 // | D | : | 49 // | : | : | 50 // ------------------------ ------------------------ 51 // 52 // |image_bounds| = (W, H) 53 // |image_aperture| = (X, Y, P, Q) 54 // |border| = (A, C, A + B, C + D) 55 // |fill_center| indicates whether to draw the center quad or not. 56 void SetLayout(const gfx::Rect& image_aperture, 57 const gfx::Rect& border, 58 bool fill_center); 59 60 virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) 61 OVERRIDE; 62 virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; 63 64 virtual void AppendQuads(QuadSink* quad_sink, 65 AppendQuadsData* append_quads_data) OVERRIDE; 66 67 virtual base::DictionaryValue* LayerTreeAsJson() const OVERRIDE; 68 69 protected: 70 NinePatchLayerImpl(LayerTreeImpl* tree_impl, int id); 71 72 private: 73 virtual const char* LayerTypeAsString() const OVERRIDE; 74 75 void CheckGeometryLimitations(); 76 77 // The transparent center region that shows the parent layer's contents in 78 // image space. 79 gfx::Rect image_aperture_; 80 81 // An inset border that the patches will be mapped to. 82 gfx::Rect border_; 83 84 bool fill_center_; 85 86 DISALLOW_COPY_AND_ASSIGN(NinePatchLayerImpl); 87 }; 88 89 } // namespace cc 90 91 #endif // CC_LAYERS_NINE_PATCH_LAYER_IMPL_H_ 92