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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_SCROLL_VIEW_H_ | 5 #ifndef UI_VIEWS_CONTROLS_SCROLL_VIEW_H_ |
6 #define UI_VIEWS_CONTROLS_SCROLL_VIEW_H_ | 6 #define UI_VIEWS_CONTROLS_SCROLL_VIEW_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
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98 // View overrides: | 98 // View overrides: |
99 gfx::Size GetPreferredSize() const override; | 99 gfx::Size GetPreferredSize() const override; |
100 int GetHeightForWidth(int width) const override; | 100 int GetHeightForWidth(int width) const override; |
101 void Layout() override; | 101 void Layout() override; |
102 bool OnKeyPressed(const ui::KeyEvent& event) override; | 102 bool OnKeyPressed(const ui::KeyEvent& event) override; |
103 bool OnMouseWheel(const ui::MouseWheelEvent& e) override; | 103 bool OnMouseWheel(const ui::MouseWheelEvent& e) override; |
104 void OnScrollEvent(ui::ScrollEvent* event) override; | 104 void OnScrollEvent(ui::ScrollEvent* event) override; |
105 void OnGestureEvent(ui::GestureEvent* event) override; | 105 void OnGestureEvent(ui::GestureEvent* event) override; |
106 const char* GetClassName() const override; | 106 const char* GetClassName() const override; |
107 void OnNativeThemeChanged(const ui::NativeTheme* theme) override; | 107 void OnNativeThemeChanged(const ui::NativeTheme* theme) override; |
| 108 void OnChildLayerChanged(View* child) override; |
108 | 109 |
109 // ScrollBarController overrides: | 110 // ScrollBarController overrides: |
110 void ScrollToPosition(ScrollBar* source, int position) override; | 111 void ScrollToPosition(ScrollBar* source, int position) override; |
111 int GetScrollIncrement(ScrollBar* source, | 112 int GetScrollIncrement(ScrollBar* source, |
112 bool is_page, | 113 bool is_page, |
113 bool is_positive) override; | 114 bool is_positive) override; |
114 | 115 |
115 // TODO(djacobo): Remove this method when http://crbug.com/656198 is closed. | 116 // TODO(djacobo): Remove this method when http://crbug.com/656198 is closed. |
116 // Force |contents_viewport_| to enable a Layer(). | 117 // Force |contents_viewport_| to enable a Layer(). |
117 void EnableViewPortLayer(); | 118 void EnableViewPortLayer(); |
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197 // In Harmony, the indicator is a focus ring. Pre-Harmony, the indicator is a | 198 // In Harmony, the indicator is a focus ring. Pre-Harmony, the indicator is a |
198 // different border painter. | 199 // different border painter. |
199 bool draw_focus_indicator_ = false; | 200 bool draw_focus_indicator_ = false; |
200 | 201 |
201 // Only needed for pre-Harmony. Remove when Harmony is default. | 202 // Only needed for pre-Harmony. Remove when Harmony is default. |
202 bool draw_border_ = false; | 203 bool draw_border_ = false; |
203 | 204 |
204 // Focus ring, if one is installed. | 205 // Focus ring, if one is installed. |
205 View* focus_ring_ = nullptr; | 206 View* focus_ring_ = nullptr; |
206 | 207 |
| 208 // Set to true if we enabled layering for the viewport. |
| 209 bool viewport_layer_enabled_ = false; |
| 210 |
207 DISALLOW_COPY_AND_ASSIGN(ScrollView); | 211 DISALLOW_COPY_AND_ASSIGN(ScrollView); |
208 }; | 212 }; |
209 | 213 |
210 // VariableRowHeightScrollHelper is intended for views that contain rows of | 214 // VariableRowHeightScrollHelper is intended for views that contain rows of |
211 // varying height. To use a VariableRowHeightScrollHelper create one supplying | 215 // varying height. To use a VariableRowHeightScrollHelper create one supplying |
212 // a Controller and delegate GetPageScrollIncrement and GetLineScrollIncrement | 216 // a Controller and delegate GetPageScrollIncrement and GetLineScrollIncrement |
213 // to the helper. VariableRowHeightScrollHelper calls back to the | 217 // to the helper. VariableRowHeightScrollHelper calls back to the |
214 // Controller to determine row boundaries. | 218 // Controller to determine row boundaries. |
215 class VariableRowHeightScrollHelper { | 219 class VariableRowHeightScrollHelper { |
216 public: | 220 public: |
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273 private: | 277 private: |
274 int top_margin_; | 278 int top_margin_; |
275 int row_height_; | 279 int row_height_; |
276 | 280 |
277 DISALLOW_COPY_AND_ASSIGN(FixedRowHeightScrollHelper); | 281 DISALLOW_COPY_AND_ASSIGN(FixedRowHeightScrollHelper); |
278 }; | 282 }; |
279 | 283 |
280 } // namespace views | 284 } // namespace views |
281 | 285 |
282 #endif // UI_VIEWS_CONTROLS_SCROLL_VIEW_H_ | 286 #endif // UI_VIEWS_CONTROLS_SCROLL_VIEW_H_ |
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