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/layers/ui_resource_layer.h" 12#include "cc/resources/ui_resource_client.h" 13#include "ui/gfx/rect.h" 14 15namespace cc { 16 17class LayerTreeHost; 18class ScopedUIResource; 19 20class CC_EXPORT NinePatchLayer : public UIResourceLayer { 21 public: 22 static scoped_refptr<NinePatchLayer> Create(); 23 24 virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; 25 26 // |border| is the space around the center rectangular region in layer space 27 // (known as aperture in image space). |border.x()| and |border.y()| are the 28 // size of the left and top boundary, respectively. 29 // |border.width()-border.x()| and |border.height()-border.y()| are the size 30 // of the right and bottom boundary, respectively. 31 void SetBorder(const gfx::Rect& border); 32 33 // aperture is in the pixel space of the bitmap resource and refers to 34 // the center patch of the ninepatch (which is unused in this 35 // implementation). We split off eight rects surrounding it and stick them 36 // on the edges of the layer. The corners are unscaled, the top and bottom 37 // rects are x-stretched to fit, and the left and right rects are 38 // y-stretched to fit. 39 void SetAperture(const gfx::Rect& aperture); 40 void SetFillCenter(bool fill_center); 41 42 private: 43 NinePatchLayer(); 44 virtual ~NinePatchLayer(); 45 virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) 46 OVERRIDE; 47 48 gfx::Rect border_; 49 bool fill_center_; 50 51 // The transparent center region that shows the parent layer's contents in 52 // image space. 53 gfx::Rect image_aperture_; 54 55 DISALLOW_COPY_AND_ASSIGN(NinePatchLayer); 56}; 57 58} // namespace cc 59 60#endif // CC_LAYERS_NINE_PATCH_LAYER_H_ 61