| // 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_SCROLLBAR_LAYER_IMPL_H_ |
| #define CC_LAYERS_SCROLLBAR_LAYER_IMPL_H_ |
| |
| #include "cc/base/cc_export.h" |
| #include "cc/input/scrollbar.h" |
| #include "cc/layers/layer_impl.h" |
| |
| namespace cc { |
| |
| class LayerTreeImpl; |
| class ScrollView; |
| |
| class CC_EXPORT ScrollbarLayerImpl : public LayerImpl { |
| public: |
| static scoped_ptr<ScrollbarLayerImpl> Create( |
| LayerTreeImpl* tree_impl, |
| int id, |
| ScrollbarOrientation orientation); |
| virtual ~ScrollbarLayerImpl(); |
| |
| // LayerImpl implementation. |
| virtual ScrollbarLayerImpl* ToScrollbarLayer() OVERRIDE; |
| virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) |
| OVERRIDE; |
| virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; |
| |
| virtual bool WillDraw(DrawMode draw_mode, |
| ResourceProvider* resource_provider) OVERRIDE; |
| virtual void AppendQuads(QuadSink* quad_sink, |
| AppendQuadsData* append_quads_data) OVERRIDE; |
| |
| virtual void DidLoseOutputSurface() OVERRIDE; |
| |
| int scroll_layer_id() const { return scroll_layer_id_; } |
| void set_scroll_layer_id(int id) { scroll_layer_id_ = id; } |
| |
| ScrollbarOrientation Orientation() const; |
| float CurrentPos() const; |
| int Maximum() const; |
| |
| void SetThumbThickness(int thumb_thickness); |
| int thumb_thickness() const { return thumb_thickness_; } |
| void SetThumbLength(int thumb_length); |
| void SetTrackStart(int track_start); |
| void SetTrackLength(int track_length); |
| void SetVerticalAdjust(float vertical_adjust); |
| void set_track_resource_id(ResourceProvider::ResourceId id) { |
| track_resource_id_ = id; |
| } |
| void set_thumb_resource_id(ResourceProvider::ResourceId id) { |
| thumb_resource_id_ = id; |
| } |
| void SetVisibleToTotalLengthRatio(float ratio); |
| void set_is_overlay_scrollbar(bool is_overlay_scrollbar) { |
| is_overlay_scrollbar_ = is_overlay_scrollbar; |
| } |
| bool is_overlay_scrollbar() const { return is_overlay_scrollbar_; } |
| |
| void SetCurrentPos(float current_pos); |
| void SetMaximum(int maximum); |
| |
| gfx::Rect ComputeThumbQuadRect() const; |
| |
| protected: |
| ScrollbarLayerImpl(LayerTreeImpl* tree_impl, |
| int id, |
| ScrollbarOrientation orientation); |
| |
| private: |
| virtual const char* LayerTypeAsString() const OVERRIDE; |
| |
| gfx::Rect ScrollbarLayerRectToContentRect(gfx::RectF layer_rect) const; |
| |
| ResourceProvider::ResourceId track_resource_id_; |
| ResourceProvider::ResourceId thumb_resource_id_; |
| |
| float current_pos_; |
| int maximum_; |
| int thumb_thickness_; |
| int thumb_length_; |
| int track_start_; |
| int track_length_; |
| ScrollbarOrientation orientation_; |
| |
| // Difference between the clip layer's height and the visible viewport |
| // height (which may differ in the presence of top-controls hiding). |
| float vertical_adjust_; |
| |
| float visible_to_total_length_ratio_; |
| |
| int scroll_layer_id_; |
| |
| bool is_overlay_scrollbar_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerImpl); |
| }; |
| |
| } // namespace cc |
| #endif // CC_LAYERS_SCROLLBAR_LAYER_IMPL_H_ |