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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ | 5 #ifndef CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ |
6 #define CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ | 6 #define CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ |
7 | 7 |
8 #include "cc/base/cc_export.h" | 8 #include "cc/base/cc_export.h" |
9 #include "cc/input/scrollbar.h" | 9 #include "cc/input/scrollbar.h" |
10 #include "cc/layers/layer.h" | |
11 #include "cc/layers/layer_impl.h" | 10 #include "cc/layers/layer_impl.h" |
12 | 11 |
13 namespace cc { | 12 namespace cc { |
14 | 13 |
15 class LayerTreeImpl; | 14 class LayerTreeImpl; |
16 | 15 |
17 class CC_EXPORT ScrollbarLayerImplBase : public LayerImpl { | 16 class CC_EXPORT ScrollbarLayerImplBase : public LayerImpl { |
18 public: | 17 public: |
19 int ScrollLayerId() const { | 18 int ScrollLayerId() const { return scroll_layer_id_; } |
20 return scroll_layer_ ? scroll_layer_->id() : Layer::INVALID_ID; | 19 void set_scroll_layer_id(int id) { scroll_layer_id_ = id; } |
21 } | |
22 void ClearScrollLayer() { scroll_layer_ = NULL; } | |
23 void SetScrollLayerById(int id); | |
24 int ClipLayerId() const { | |
25 return clip_layer_ ? clip_layer_->id() : Layer::INVALID_ID; | |
26 } | |
27 void ClearClipLayer() { clip_layer_ = NULL; } | |
28 void SetClipLayerById(int id); | |
29 | 20 |
30 float current_pos() const { return current_pos_; } | 21 float current_pos() const { return current_pos_; } |
31 void SetCurrentPos(float current_pos); | 22 void SetCurrentPos(float current_pos); |
32 int maximum() const { return maximum_; } | 23 int maximum() const { return maximum_; } |
33 void SetMaximum(int maximum); | 24 void SetMaximum(int maximum); |
34 | 25 |
35 void SetVerticalAdjust(float vertical_adjust); | 26 void SetVerticalAdjust(float vertical_adjust); |
36 | 27 |
37 bool is_overlay_scrollbar() const { return is_overlay_scrollbar_; } | 28 bool is_overlay_scrollbar() const { return is_overlay_scrollbar_; } |
38 void set_is_overlay_scrollbar(bool is_overlay) { | 29 void set_is_overlay_scrollbar(bool is_overlay) { |
39 is_overlay_scrollbar_ = is_overlay; | 30 is_overlay_scrollbar_ = is_overlay; |
40 } | 31 } |
41 | 32 |
42 ScrollbarOrientation orientation() const { return orientation_; } | 33 ScrollbarOrientation orientation() const { return orientation_; } |
43 bool is_left_side_vertical_scrollbar() { | 34 bool is_left_side_vertical_scrollbar() { |
44 return is_left_side_vertical_scrollbar_; | 35 return is_left_side_vertical_scrollbar_; |
45 } | 36 } |
46 | 37 |
47 virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; | 38 virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE; |
48 virtual ScrollbarLayerImplBase* ToScrollbarLayer() OVERRIDE; | 39 virtual ScrollbarLayerImplBase* ToScrollbarLayer() OVERRIDE; |
49 void PushScrollClipPropertiesTo(LayerImpl* layer); | |
50 | 40 |
51 void SetVisibleToTotalLengthRatio(float ratio); | 41 void SetVisibleToTotalLengthRatio(float ratio); |
52 virtual gfx::Rect ComputeThumbQuadRect() const; | 42 virtual gfx::Rect ComputeThumbQuadRect() const; |
53 | 43 |
54 float thumb_thickness_scale_factor() { | 44 float thumb_thickness_scale_factor() { |
55 return thumb_thickness_scale_factor_; | 45 return thumb_thickness_scale_factor_; |
56 } | 46 } |
57 void SetThumbThicknessScaleFactor(float thumb_thickness_scale_factor); | 47 void SetThumbThicknessScaleFactor(float thumb_thickness_scale_factor); |
58 | 48 |
59 void ScrollbarParametersDidChange(); | |
60 | |
61 protected: | 49 protected: |
62 ScrollbarLayerImplBase(LayerTreeImpl* tree_impl, | 50 ScrollbarLayerImplBase(LayerTreeImpl* tree_impl, |
63 int id, | 51 int id, |
64 ScrollbarOrientation orientation, | 52 ScrollbarOrientation orientation, |
65 bool is_left_side_vertical_scrollbar, | 53 bool is_left_side_vertical_scrollbar); |
66 bool is_overlay); | 54 virtual ~ScrollbarLayerImplBase() {} |
67 virtual ~ScrollbarLayerImplBase(); | |
68 | 55 |
69 gfx::Rect ScrollbarLayerRectToContentRect(const gfx::RectF& layer_rect) const; | 56 gfx::Rect ScrollbarLayerRectToContentRect(const gfx::RectF& layer_rect) const; |
70 | 57 |
71 float visible_to_total_length_ratio() const { | 58 float visible_to_total_length_ratio() const { |
72 return visible_to_total_length_ratio_; | 59 return visible_to_total_length_ratio_; |
73 } | 60 } |
74 float vertical_adjust() const { return vertical_adjust_; } | 61 float vertical_adjust() const { return vertical_adjust_; } |
75 | 62 |
76 virtual int ThumbThickness() const = 0; | 63 virtual int ThumbThickness() const = 0; |
77 virtual int ThumbLength() const = 0; | 64 virtual int ThumbLength() const = 0; |
78 virtual float TrackLength() const = 0; | 65 virtual float TrackLength() const = 0; |
79 virtual int TrackStart() const = 0; | 66 virtual int TrackStart() const = 0; |
80 // Indicates whether the thumb length can be changed without going back to the | 67 // Indicates whether the thumb length can be changed without going back to the |
81 // main thread. | 68 // main thread. |
82 virtual bool IsThumbResizable() const = 0; | 69 virtual bool IsThumbResizable() const = 0; |
83 | 70 |
84 private: | 71 private: |
85 LayerImpl* scroll_layer_; | 72 int scroll_layer_id_; |
86 LayerImpl* clip_layer_; | |
87 bool is_overlay_scrollbar_; | 73 bool is_overlay_scrollbar_; |
88 | 74 |
89 float thumb_thickness_scale_factor_; | 75 float thumb_thickness_scale_factor_; |
90 float current_pos_; | 76 float current_pos_; |
91 int maximum_; | 77 int maximum_; |
92 ScrollbarOrientation orientation_; | 78 ScrollbarOrientation orientation_; |
93 bool is_left_side_vertical_scrollbar_; | 79 bool is_left_side_vertical_scrollbar_; |
94 | 80 |
95 // Difference between the clip layer's height and the visible viewport | 81 // Difference between the clip layer's height and the visible viewport |
96 // height (which may differ in the presence of top-controls hiding). | 82 // height (which may differ in the presence of top-controls hiding). |
97 float vertical_adjust_; | 83 float vertical_adjust_; |
98 | 84 |
99 float visible_to_total_length_ratio_; | 85 float visible_to_total_length_ratio_; |
100 | 86 |
101 DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerImplBase); | 87 DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerImplBase); |
102 }; | 88 }; |
103 | 89 |
104 } // namespace cc | 90 } // namespace cc |
105 | 91 |
106 #endif // CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ | 92 #endif // CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_ |
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