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// 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_IMPL_H_
#define CC_LAYERS_NINE_PATCH_LAYER_IMPL_H_
#include <string>
#include "cc/base/cc_export.h"
#include "cc/layers/layer_impl.h"
#include "cc/layers/ui_resource_layer_impl.h"
#include "cc/resources/resource_provider.h"
#include "cc/resources/ui_resource_client.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/size.h"
namespace base {
class DictionaryValue;
}
namespace cc {
class CC_EXPORT NinePatchLayerImpl : public UIResourceLayerImpl {
public:
static scoped_ptr<NinePatchLayerImpl> Create(LayerTreeImpl* tree_impl,
int id) {
return make_scoped_ptr(new NinePatchLayerImpl(tree_impl, id));
}
virtual ~NinePatchLayerImpl();
// The bitmap stretches out the bounds of the layer. The following picture
// illustrates the parameters associated with the dimensions.
//
// Layer space layout Bitmap space layout
//
// ------------------------ ~~~~~~~~~~ W ~~~~~~~~~~
// | : | : : |
// | C | : Y |
// | : | : : |
// | ------------ | :~~X~~------------ |
// | | | | : | : |
// | | | | : | : |
// |~~A~~| |~~B~~| H | Q |
// | | | | : | : |
// | ------------ | : ~~~~~P~~~~~ |
// | : | : |
// | D | : |
// | : | : |
// ------------------------ ------------------------
//
// |image_bounds| = (W, H)
// |image_aperture| = (X, Y, P, Q)
// |border| = (A, C, A + B, C + D)
// |fill_center| indicates whether to draw the center quad or not.
void SetLayout(const gfx::Rect& image_aperture,
const gfx::Rect& border,
bool fill_center);
virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
OVERRIDE;
virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
virtual void AppendQuads(QuadSink* quad_sink,
AppendQuadsData* append_quads_data) OVERRIDE;
virtual base::DictionaryValue* LayerTreeAsJson() const OVERRIDE;
protected:
NinePatchLayerImpl(LayerTreeImpl* tree_impl, int id);
private:
virtual const char* LayerTypeAsString() const OVERRIDE;
void CheckGeometryLimitations();
// The transparent center region that shows the parent layer's contents in
// image space.
gfx::Rect image_aperture_;
// An inset border that the patches will be mapped to.
gfx::Rect border_;
bool fill_center_;
DISALLOW_COPY_AND_ASSIGN(NinePatchLayerImpl);
};
} // namespace cc
#endif // CC_LAYERS_NINE_PATCH_LAYER_IMPL_H_
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