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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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178 virtual IntRect constrainTrackRectToTrackPieces(const ScrollbarThemeClient&, | 178 virtual IntRect constrainTrackRectToTrackPieces(const ScrollbarThemeClient&, |
179 const IntRect& rect) { | 179 const IntRect& rect) { |
180 return rect; | 180 return rect; |
181 } | 181 } |
182 | 182 |
183 virtual void registerScrollbar(ScrollbarThemeClient&) {} | 183 virtual void registerScrollbar(ScrollbarThemeClient&) {} |
184 virtual void unregisterScrollbar(ScrollbarThemeClient&) {} | 184 virtual void unregisterScrollbar(ScrollbarThemeClient&) {} |
185 | 185 |
186 virtual bool isMockTheme() const { return false; } | 186 virtual bool isMockTheme() const { return false; } |
187 | 187 |
188 virtual bool usesNinePatchThumbResource() const { return false; } | |
189 | |
190 // For a nine-patch scrollbar, this defines the painting canvas size which the | |
191 // painting code will use to paint the scrollbar into. The actual scrollbar | |
192 // dimensions will be ignored for purposes of painting since the resource can | |
193 // be then resized without a repaint. | |
194 virtual IntSize ninePatchThumbCanvasSize(const ScrollbarThemeClient&) const { | |
195 NOTREACHED(); | |
196 return IntSize(); | |
197 } | |
198 | |
199 // For a nine-patch resource, the aperture defines the size of the center | |
jbroman
2017/03/01 15:27:18
Just the size? I'd expect it to define the center
bokan
2017/03/01 16:22:44
You're right, this was an error in the comment. Fi
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200 // patch that will be stretched out. | |
201 virtual IntRect ninePatchThumbAperture(const ScrollbarThemeClient&) const { | |
202 NOTREACHED(); | |
203 return IntRect(); | |
204 } | |
205 | |
188 static ScrollbarTheme& theme(); | 206 static ScrollbarTheme& theme(); |
189 | 207 |
190 static void setMockScrollbarsEnabled(bool flag); | 208 static void setMockScrollbarsEnabled(bool flag); |
191 static bool mockScrollbarsEnabled(); | 209 static bool mockScrollbarsEnabled(); |
192 | 210 |
193 protected: | 211 protected: |
194 virtual int tickmarkBorderWidth() { return 0; } | 212 virtual int tickmarkBorderWidth() { return 0; } |
195 static DisplayItem::Type buttonPartToDisplayItemType(ScrollbarPart); | 213 static DisplayItem::Type buttonPartToDisplayItemType(ScrollbarPart); |
196 static DisplayItem::Type trackPiecePartToDisplayItemType(ScrollbarPart); | 214 static DisplayItem::Type trackPiecePartToDisplayItemType(ScrollbarPart); |
197 | 215 |
198 private: | 216 private: |
199 static ScrollbarTheme& | 217 static ScrollbarTheme& |
200 nativeTheme(); // Must be implemented to return the correct theme subclass. | 218 nativeTheme(); // Must be implemented to return the correct theme subclass. |
201 static bool gMockScrollbarsEnabled; | 219 static bool gMockScrollbarsEnabled; |
202 }; | 220 }; |
203 | 221 |
204 } // namespace blink | 222 } // namespace blink |
205 #endif | 223 #endif |
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