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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 UI_VIEWS_CONTROLS_SLIDER_H_ | 5 #ifndef UI_VIEWS_CONTROLS_SLIDER_H_ |
6 #define UI_VIEWS_CONTROLS_SLIDER_H_ | 6 #define UI_VIEWS_CONTROLS_SLIDER_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "ui/gfx/animation/animation_delegate.h" | 9 #include "ui/gfx/animation/animation_delegate.h" |
10 #include "ui/gfx/animation/slide_animation.h" | |
10 #include "ui/views/view.h" | 11 #include "ui/views/view.h" |
11 #include "ui/views/views_export.h" | 12 #include "ui/views/views_export.h" |
12 | 13 |
13 typedef unsigned int SkColor; | 14 typedef unsigned int SkColor; |
14 | 15 |
15 namespace gfx { | |
16 class SlideAnimation; | |
17 } | |
18 | |
19 namespace views { | 16 namespace views { |
20 | 17 |
21 namespace test { | 18 namespace test { |
22 class SliderTestApi; | 19 class SliderTestApi; |
23 } | 20 } |
24 | 21 |
25 class Slider; | 22 class Slider; |
26 | 23 |
27 enum SliderChangeReason { | 24 enum SliderChangeReason { |
28 VALUE_CHANGED_BY_USER, // value was changed by the user (by clicking, e.g.) | 25 VALUE_CHANGED_BY_USER, // value was changed by the user (by clicking, e.g.) |
(...skipping 14 matching lines...) Expand all Loading... | |
43 | 40 |
44 protected: | 41 protected: |
45 virtual ~SliderListener() {} | 42 virtual ~SliderListener() {} |
46 }; | 43 }; |
47 | 44 |
48 class VIEWS_EXPORT Slider : public View, public gfx::AnimationDelegate { | 45 class VIEWS_EXPORT Slider : public View, public gfx::AnimationDelegate { |
49 public: | 46 public: |
50 // Internal class name. | 47 // Internal class name. |
51 static const char kViewClassName[]; | 48 static const char kViewClassName[]; |
52 | 49 |
53 // Based on the bool |is_material_design|, either a md version or a non-md | 50 explicit Slider(SliderListener* listener); |
54 // version of the slider will be created. | |
55 static Slider* CreateSlider(bool is_material_design, | |
56 SliderListener* listener); | |
57 ~Slider() override; | 51 ~Slider() override; |
58 | 52 |
59 float value() const { return value_; } | 53 float value() const { return value_; } |
60 void SetValue(float value); | 54 void SetValue(float value); |
61 | 55 |
62 void SetAccessibleName(const base::string16& name); | 56 void SetAccessibleName(const base::string16& name); |
63 | 57 |
64 void set_enable_accessibility_events(bool enabled) { | 58 void set_enable_accessibility_events(bool enabled) { |
65 accessibility_events_enabled_ = enabled; | 59 accessibility_events_enabled_ = enabled; |
66 } | 60 } |
67 | 61 |
68 // Update UI based on control on/off state. | 62 // Update UI based on control on/off state. |
69 virtual void UpdateState(bool control_on) = 0; | 63 void UpdateState(bool control_on); |
70 | 64 |
71 protected: | 65 protected: |
72 explicit Slider(SliderListener* listener); | |
73 | |
74 // Returns the current position of the thumb on the slider. | 66 // Returns the current position of the thumb on the slider. |
75 float GetAnimatingValue() const; | 67 float GetAnimatingValue() const; |
76 | 68 |
77 // Shows or hides the highlight on the slider thumb. The default | 69 // Shows or hides the highlight on the slider thumb. The default |
78 // implementation does nothing. | 70 // implementation does nothing. |
79 virtual void SetHighlighted(bool is_highlighted); | 71 void SetHighlighted(bool is_highlighted); |
80 | |
81 // Gets the size of the slider's thumb. | |
82 virtual int GetThumbWidth() = 0; | |
83 | |
84 // views::View: | |
85 void OnPaint(gfx::Canvas* canvas) override; | |
86 | 72 |
87 // gfx::AnimationDelegate: | 73 // gfx::AnimationDelegate: |
88 void AnimationProgressed(const gfx::Animation* animation) override; | 74 void AnimationProgressed(const gfx::Animation* animation) override; |
89 void AnimationEnded(const gfx::Animation* animation) override; | 75 void AnimationEnded(const gfx::Animation* animation) override; |
90 | 76 |
91 private: | 77 private: |
92 friend class test::SliderTestApi; | 78 friend class test::SliderTestApi; |
93 | 79 |
94 void SetValueInternal(float value, SliderChangeReason reason); | 80 void SetValueInternal(float value, SliderChangeReason reason); |
95 | 81 |
96 // Should be called on the Mouse Down event. Used to calculate relative | 82 // Should be called on the Mouse Down event. Used to calculate relative |
97 // position of the mouse cursor (or the touch point) on the button to | 83 // position of the mouse cursor (or the touch point) on the button to |
98 // accurately move the button using the MoveButtonTo() method. | 84 // accurately move the button using the MoveButtonTo() method. |
99 void PrepareForMove(const int new_x); | 85 void PrepareForMove(const int new_x); |
100 | 86 |
101 // Moves the button to the specified point and updates the value accordingly. | 87 // Moves the button to the specified point and updates the value accordingly. |
102 void MoveButtonTo(const gfx::Point& point); | 88 void MoveButtonTo(const gfx::Point& point); |
103 | 89 |
104 void OnPaintFocus(gfx::Canvas* canvas); | 90 void OnPaintFocus(gfx::Canvas* canvas); |
105 | 91 |
106 // Notify the listener_, if not NULL, that dragging started. | 92 // Notify the listener_, if not NULL, that dragging started. |
107 void OnSliderDragStarted(); | 93 void OnSliderDragStarted(); |
108 | 94 |
109 // Notify the listener_, if not NULL, that dragging ended. | 95 // Notify the listener_, if not NULL, that dragging ended. |
110 void OnSliderDragEnded(); | 96 void OnSliderDragEnded(); |
111 | 97 |
112 // views::View: | 98 // views::View: |
99 void OnPaint(gfx::Canvas* canvas) override; | |
msw
2017/02/16 21:08:20
nit: match order to view.h (btw GetAccessibleNodeD
Evan Stade
2017/02/16 22:48:01
Done.
| |
113 const char* GetClassName() const override; | 100 const char* GetClassName() const override; |
114 gfx::Size GetPreferredSize() const override; | 101 gfx::Size GetPreferredSize() const override; |
115 bool OnMousePressed(const ui::MouseEvent& event) override; | 102 bool OnMousePressed(const ui::MouseEvent& event) override; |
116 bool OnMouseDragged(const ui::MouseEvent& event) override; | 103 bool OnMouseDragged(const ui::MouseEvent& event) override; |
117 void OnMouseReleased(const ui::MouseEvent& event) override; | 104 void OnMouseReleased(const ui::MouseEvent& event) override; |
118 bool OnKeyPressed(const ui::KeyEvent& event) override; | 105 bool OnKeyPressed(const ui::KeyEvent& event) override; |
119 void GetAccessibleNodeData(ui::AXNodeData* node_data) override; | 106 void GetAccessibleNodeData(ui::AXNodeData* node_data) override; |
120 void OnFocus() override; | 107 void OnFocus() override; |
121 void OnBlur() override; | 108 void OnBlur() override; |
122 | 109 |
123 // ui::EventHandler: | 110 // ui::EventHandler: |
124 void OnGestureEvent(ui::GestureEvent* event) override; | 111 void OnGestureEvent(ui::GestureEvent* event) override; |
125 | 112 |
126 void set_listener(SliderListener* listener) { | 113 void set_listener(SliderListener* listener) { |
127 listener_ = listener; | 114 listener_ = listener; |
128 } | 115 } |
129 | 116 |
130 SliderListener* listener_; | 117 SliderListener* listener_; |
131 | 118 |
132 std::unique_ptr<gfx::SlideAnimation> move_animation_; | 119 std::unique_ptr<gfx::SlideAnimation> move_animation_; |
133 | 120 |
134 float value_; | 121 float value_ = 0.f; |
135 float keyboard_increment_; | 122 float keyboard_increment_ = 0.1f; |
136 float initial_animating_value_; | 123 float initial_animating_value_ = 0.f; |
137 bool value_is_valid_; | 124 bool value_is_valid_ = false; |
138 base::string16 accessible_name_; | 125 base::string16 accessible_name_; |
139 bool accessibility_events_enabled_; | 126 bool accessibility_events_enabled_ = true; |
140 | 127 |
141 // Relative position of the mouse cursor (or the touch point) on the slider's | 128 // Relative position of the mouse cursor (or the touch point) on the slider's |
142 // button. | 129 // button. |
143 int initial_button_offset_; | 130 int initial_button_offset_ = 0; |
131 | |
132 // Record whether the slider is in the active state or the disabled state. | |
133 bool is_active_ = true; | |
134 | |
135 // Animating value of the current radius of the thumb's highlight. | |
136 float thumb_highlight_radius_ = 0.f; | |
137 | |
138 gfx::SlideAnimation highlight_animation_; | |
144 | 139 |
145 DISALLOW_COPY_AND_ASSIGN(Slider); | 140 DISALLOW_COPY_AND_ASSIGN(Slider); |
146 }; | 141 }; |
147 | 142 |
148 } // namespace views | 143 } // namespace views |
149 | 144 |
150 #endif // UI_VIEWS_CONTROLS_SLIDER_H_ | 145 #endif // UI_VIEWS_CONTROLS_SLIDER_H_ |
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