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Diffstat (limited to 'cc/layers/nine_patch_layer.h')
-rw-r--r-- | cc/layers/nine_patch_layer.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/cc/layers/nine_patch_layer.h b/cc/layers/nine_patch_layer.h new file mode 100644 index 0000000..21b8cb9 --- /dev/null +++ b/cc/layers/nine_patch_layer.h @@ -0,0 +1,61 @@ +// 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 "base/memory/scoped_ptr.h" +#include "cc/base/cc_export.h" +#include "cc/layers/layer.h" +#include "cc/resources/image_layer_updater.h" +#include "third_party/skia/include/core/SkBitmap.h" +#include "ui/gfx/rect.h" + +namespace cc { + +class ResourceUpdateQueue; + +class CC_EXPORT NinePatchLayer : public Layer { + public: + static scoped_refptr<NinePatchLayer> Create(); + + virtual bool DrawsContent() const OVERRIDE; + virtual void SetTexturePriorities(const PriorityCalculator& priority_calc) + OVERRIDE; + virtual void Update(ResourceUpdateQueue* queue, + const OcclusionTracker* occlusion, + RenderingStats* stats) OVERRIDE; + virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; + + // 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 SetBitmap(const SkBitmap& bitmap, gfx::Rect aperture); + + private: + NinePatchLayer(); + virtual ~NinePatchLayer(); + virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) + OVERRIDE; + + void CreateUpdaterIfNeeded(); + void CreateResource(); + + scoped_refptr<ImageLayerUpdater> updater_; + scoped_ptr<LayerUpdater::Resource> resource_; + + SkBitmap bitmap_; + bool bitmap_dirty_; + + // The transparent center region that shows the parent layer's contents in + // image space. + gfx::Rect image_aperture_; +}; + +} // namespace cc + +#endif // CC_LAYERS_NINE_PATCH_LAYER_H_ |