| // Copyright 2013 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_SOLID_COLOR_SCROLLBAR_LAYER_H_ |
| #define CC_LAYERS_SOLID_COLOR_SCROLLBAR_LAYER_H_ |
| |
| #include "cc/cc_export.h" |
| #include "cc/layers/layer.h" |
| #include "cc/layers/scrollbar_layer_base.h" |
| |
| namespace cc { |
| |
| // A solid color scrollbar that can be fully drawn on the impl thread. In |
| // practice, this is used for overlay scrollbars on Android. |
| class CC_EXPORT SolidColorScrollbarLayer : public ScrollbarLayerBase { |
| public: |
| std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override; |
| |
| static scoped_refptr<SolidColorScrollbarLayer> CreateOrReuse( |
| scoped_refptr<Scrollbar>, |
| SolidColorScrollbarLayer* existing_layer); |
| |
| static scoped_refptr<SolidColorScrollbarLayer> Create( |
| ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar); |
| |
| SolidColorScrollbarLayer(const SolidColorScrollbarLayer&) = delete; |
| SolidColorScrollbarLayer& operator=(const SolidColorScrollbarLayer&) = delete; |
| |
| // Layer overrides. |
| bool OpacityCanAnimateOnImplThread() const override; |
| void SetOpacity(float opacity) override; |
| void SetNeedsDisplayRect(const gfx::Rect& rect) override; |
| bool HitTestable() const override; |
| |
| int thumb_thickness() const { return thumb_thickness_; } |
| int track_start() const { return track_start_; } |
| |
| ScrollbarLayerType GetScrollbarLayerType() const override; |
| |
| private: |
| SolidColorScrollbarLayer(ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar); |
| ~SolidColorScrollbarLayer() override; |
| |
| int thumb_thickness_; |
| int track_start_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_LAYERS_SOLID_COLOR_SCROLLBAR_LAYER_H_ |