| // Copyright 2012 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 CC_LAYERS_NINE_PATCH_LAYER_H_ |
| #define CC_LAYERS_NINE_PATCH_LAYER_H_ |
| |
| #include <memory> |
| |
| #include "cc/cc_export.h" |
| #include "cc/layers/layer.h" |
| #include "cc/layers/ui_resource_layer.h" |
| #include "cc/resources/ui_resource_client.h" |
| #include "ui/gfx/geometry/rect.h" |
| |
| namespace cc { |
| |
| class CC_EXPORT NinePatchLayer : public UIResourceLayer { |
| public: |
| static scoped_refptr<NinePatchLayer> Create(); |
| |
| NinePatchLayer(const NinePatchLayer&) = delete; |
| NinePatchLayer& operator=(const NinePatchLayer&) = delete; |
| |
| void PushPropertiesTo(LayerImpl* layer) override; |
| |
| // |border| is the space around the center rectangular region in layer space |
| // (known as aperture in image space). |border.x()| and |border.y()| are the |
| // size of the left and top boundary, respectively. |
| // |border.width()-border.x()| and |border.height()-border.y()| are the size |
| // of the right and bottom boundary, respectively. |
| void SetBorder(const gfx::Rect& border); |
| |
| // aperture is in the pixel space of the bitmap resource and refers to |
| // the center patch of the ninepatch (which is unused in this |
| // implementation). We split off eight rects surrounding it and stick them |
| // on the edges of the layer. The corners are unscaled, the top and bottom |
| // rects are x-stretched to fit, and the left and right rects are |
| // y-stretched to fit. |
| void SetAperture(const gfx::Rect& aperture); |
| void SetFillCenter(bool fill_center); |
| void SetNearestNeighbor(bool nearest_neighbor); |
| |
| // |rect| is the space completely occluded by another layer in layer |
| // space. This can be used for example to occlude the entire window's |
| // content when drawing the shadow with a 9 patches layer. |
| void SetLayerOcclusion(const gfx::Rect& occlusion); |
| |
| private: |
| NinePatchLayer(); |
| ~NinePatchLayer() override; |
| std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override; |
| |
| gfx::Rect border_; |
| bool fill_center_; |
| bool nearest_neighbor_; |
| |
| // The transparent center region that shows the parent layer's contents in |
| // image space. |
| gfx::Rect image_aperture_; |
| |
| // The occluded region in layer space set by SetLayerOcclusion. It is |
| // usually larger than |image_aperture_|. |
| gfx::Rect layer_occlusion_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_LAYERS_NINE_PATCH_LAYER_H_ |