| // 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_SCROLLBAR_LAYER_IMPL_BASE_H_ |
| #define CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ |
| |
| #include "cc/base/cc_export.h" |
| #include "cc/input/scrollbar.h" |
| #include "cc/layers/layer_impl.h" |
| |
| namespace cc { |
| |
| class LayerTreeImpl; |
| |
| class CC_EXPORT ScrollbarLayerImplBase : public LayerImpl { |
| public: |
| int ScrollLayerId() const { return scroll_layer_id_; } |
| void set_scroll_layer_id(int id) { scroll_layer_id_ = id; } |
| |
| float current_pos() const { return current_pos_; } |
| void SetCurrentPos(float current_pos); |
| int maximum() const { return maximum_; } |
| void SetMaximum(int maximum); |
| |
| void SetVerticalAdjust(float vertical_adjust); |
| |
| bool is_overlay_scrollbar() const { return is_overlay_scrollbar_; } |
| void set_is_overlay_scrollbar(bool is_overlay) { |
| is_overlay_scrollbar_ = is_overlay; |
| } |
| |
| ScrollbarOrientation orientation() const { return orientation_; } |
| bool is_left_side_vertical_scrollbar() { |
| return is_left_side_vertical_scrollbar_; |
| } |
| |
| virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; |
| virtual ScrollbarLayerImplBase* ToScrollbarLayer() OVERRIDE; |
| |
| void SetVisibleToTotalLengthRatio(float ratio); |
| virtual gfx::Rect ComputeThumbQuadRect() const; |
| |
| float thumb_thickness_scale_factor() { |
| return thumb_thickness_scale_factor_; |
| } |
| void SetThumbThicknessScaleFactor(float thumb_thickness_scale_factor); |
| |
| protected: |
| ScrollbarLayerImplBase(LayerTreeImpl* tree_impl, |
| int id, |
| ScrollbarOrientation orientation, |
| bool is_left_side_vertical_scrollbar); |
| virtual ~ScrollbarLayerImplBase() {} |
| |
| gfx::Rect ScrollbarLayerRectToContentRect(gfx::RectF layer_rect) const; |
| |
| float visible_to_total_length_ratio() const { |
| return visible_to_total_length_ratio_; |
| } |
| float vertical_adjust() const { return vertical_adjust_; } |
| |
| virtual int ThumbThickness() const = 0; |
| virtual int ThumbLength() const = 0; |
| virtual float TrackLength() const = 0; |
| virtual int TrackStart() const = 0; |
| |
| private: |
| int scroll_layer_id_; |
| bool is_overlay_scrollbar_; |
| |
| float thumb_thickness_scale_factor_; |
| float current_pos_; |
| int maximum_; |
| ScrollbarOrientation orientation_; |
| bool is_left_side_vertical_scrollbar_; |
| |
| // 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_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerImplBase); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ |