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1 /* | 1 /* |
2 * Copyright (C) 2008, 2011 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008, 2011 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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246 // animations. | 246 // animations. |
247 virtual bool scheduleAnimation(); | 247 virtual bool scheduleAnimation(); |
248 virtual void serviceScrollAnimations(double monotonicTime); | 248 virtual void serviceScrollAnimations(double monotonicTime); |
249 virtual void updateCompositorScrollAnimations(); | 249 virtual void updateCompositorScrollAnimations(); |
250 virtual void registerForAnimation() {} | 250 virtual void registerForAnimation() {} |
251 virtual void deregisterForAnimation() {} | 251 virtual void deregisterForAnimation() {} |
252 | 252 |
253 virtual bool usesCompositedScrolling() const { return false; } | 253 virtual bool usesCompositedScrolling() const { return false; } |
254 virtual bool shouldScrollOnMainThread() const; | 254 virtual bool shouldScrollOnMainThread() const; |
255 | 255 |
| 256 // Overlay scrollbars can "fade-out" when inactive. |
| 257 virtual bool scrollbarsHidden() const; |
| 258 virtual void setScrollbarsHidden(bool); |
| 259 virtual void didChangeScrollbarsHidden(){}; |
| 260 |
256 // Returns true if the GraphicsLayer tree needs to be rebuilt. | 261 // Returns true if the GraphicsLayer tree needs to be rebuilt. |
257 virtual bool updateAfterCompositingChange() { return false; } | 262 virtual bool updateAfterCompositingChange() { return false; } |
258 | 263 |
259 virtual bool userInputScrollable(ScrollbarOrientation) const = 0; | 264 virtual bool userInputScrollable(ScrollbarOrientation) const = 0; |
260 virtual bool shouldPlaceVerticalScrollbarOnLeft() const = 0; | 265 virtual bool shouldPlaceVerticalScrollbarOnLeft() const = 0; |
261 | 266 |
262 // Convenience functions | 267 // Convenience functions |
263 float scrollOffset(ScrollbarOrientation orientation) { | 268 float scrollOffset(ScrollbarOrientation orientation) { |
264 return orientation == HorizontalScrollbar ? scrollOffsetInt().width() | 269 return orientation == HorizontalScrollbar ? scrollOffsetInt().width() |
265 : scrollOffsetInt().height(); | 270 : scrollOffsetInt().height(); |
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391 mutable Member<ScrollAnimatorBase> m_scrollAnimator; | 396 mutable Member<ScrollAnimatorBase> m_scrollAnimator; |
392 mutable Member<ProgrammaticScrollAnimator> m_programmaticScrollAnimator; | 397 mutable Member<ProgrammaticScrollAnimator> m_programmaticScrollAnimator; |
393 | 398 |
394 unsigned m_scrollbarOverlayColorTheme : 2; | 399 unsigned m_scrollbarOverlayColorTheme : 2; |
395 | 400 |
396 unsigned m_scrollOriginChanged : 1; | 401 unsigned m_scrollOriginChanged : 1; |
397 | 402 |
398 unsigned m_horizontalScrollbarNeedsPaintInvalidation : 1; | 403 unsigned m_horizontalScrollbarNeedsPaintInvalidation : 1; |
399 unsigned m_verticalScrollbarNeedsPaintInvalidation : 1; | 404 unsigned m_verticalScrollbarNeedsPaintInvalidation : 1; |
400 unsigned m_scrollCornerNeedsPaintInvalidation : 1; | 405 unsigned m_scrollCornerNeedsPaintInvalidation : 1; |
| 406 unsigned m_scrollbarsHidden : 1; |
401 | 407 |
402 // There are 6 possible combinations of writing mode and direction. Scroll | 408 // There are 6 possible combinations of writing mode and direction. Scroll |
403 // origin will be non-zero in the x or y axis if there is any reversed | 409 // origin will be non-zero in the x or y axis if there is any reversed |
404 // direction or writing-mode. The combinations are: | 410 // direction or writing-mode. The combinations are: |
405 // writing-mode / direction scrollOrigin.x() set scrollOrigin.y() set | 411 // writing-mode / direction scrollOrigin.x() set scrollOrigin.y() set |
406 // horizontal-tb / ltr NO NO | 412 // horizontal-tb / ltr NO NO |
407 // horizontal-tb / rtl YES NO | 413 // horizontal-tb / rtl YES NO |
408 // vertical-lr / ltr NO NO | 414 // vertical-lr / ltr NO NO |
409 // vertical-lr / rtl NO YES | 415 // vertical-lr / rtl NO YES |
410 // vertical-rl / ltr YES NO | 416 // vertical-rl / ltr YES NO |
411 // vertical-rl / rtl YES YES | 417 // vertical-rl / rtl YES YES |
412 IntPoint m_scrollOrigin; | 418 IntPoint m_scrollOrigin; |
413 }; | 419 }; |
414 | 420 |
415 } // namespace blink | 421 } // namespace blink |
416 | 422 |
417 #endif // ScrollableArea_h | 423 #endif // ScrollableArea_h |
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