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| 1 /* | 1 /* |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | 2 * Copyright (C) 2012 Google 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 |
| (...skipping 23 matching lines...) Expand all Loading... |
| 34 namespace WebCore { | 34 namespace WebCore { |
| 35 | 35 |
| 36 class PlatformGestureCurveTarget; | 36 class PlatformGestureCurveTarget; |
| 37 | 37 |
| 38 // Implementation of PlatformGestureCurve suitable for touch pad/screen-based | 38 // Implementation of PlatformGestureCurve suitable for touch pad/screen-based |
| 39 // fling scroll. Starts with a flat velocity profile based on 'velocity', which | 39 // fling scroll. Starts with a flat velocity profile based on 'velocity', which |
| 40 // tails off to zero. Time is scaled to that duration of the fling is proportion
al | 40 // tails off to zero. Time is scaled to that duration of the fling is proportion
al |
| 41 // the initial velocity. | 41 // the initial velocity. |
| 42 class TouchpadFlingPlatformGestureCurve : public PlatformGestureCurve { | 42 class TouchpadFlingPlatformGestureCurve : public PlatformGestureCurve { |
| 43 public: | 43 public: |
| 44 static PassOwnPtr<PlatformGestureCurve> create(const FloatPoint& velocity); | 44 static PassOwnPtr<PlatformGestureCurve> create(const FloatPoint& velocity, I
ntPoint cumulativeScroll = IntPoint()); |
| 45 static PassOwnPtr<PlatformGestureCurve> create(const FloatPoint& velocity, c
onst float unitTimeScaleLog10, const FloatPoint& bezierP1, const FloatPoint& bez
ierP2); | 45 static PassOwnPtr<PlatformGestureCurve> create(const FloatPoint& velocity, c
onst float unitTimeScaleLog10, const FloatPoint& bezierP1, const FloatPoint& bez
ierP2, IntPoint cumulativeScroll = IntPoint()); |
| 46 virtual ~TouchpadFlingPlatformGestureCurve(); | 46 virtual ~TouchpadFlingPlatformGestureCurve(); |
| 47 | 47 |
| 48 virtual const char* debugName() const { return "TouchpadFling"; } | 48 virtual const char* debugName() const { return "TouchpadFling"; } |
| 49 virtual bool apply(double monotonicTime, PlatformGestureCurveTarget*); | 49 virtual bool apply(double monotonicTime, PlatformGestureCurveTarget*); |
| 50 | 50 |
| 51 private: | 51 private: |
| 52 explicit TouchpadFlingPlatformGestureCurve(const FloatPoint& velocity, const
float unitTimeScaleLog10, const FloatPoint& bezierP1, const FloatPoint& bezierP
2); | 52 TouchpadFlingPlatformGestureCurve(const FloatPoint& velocity, const float un
itTimeScaleLog10, const FloatPoint& bezierP1, const FloatPoint& bezierP2, const
IntPoint& cumulativeScroll); |
| 53 | 53 |
| 54 FloatPoint m_velocity; | 54 FloatPoint m_velocity; |
| 55 float m_timeScaleFactor; | 55 float m_timeScaleFactor; |
| 56 IntPoint m_cumulativeScroll; | 56 IntPoint m_cumulativeScroll; |
| 57 UnitBezier m_flingBezier; | 57 UnitBezier m_flingBezier; |
| 58 }; | 58 }; |
| 59 | 59 |
| 60 } // namespace WebCore | 60 } // namespace WebCore |
| 61 | 61 |
| 62 #endif | 62 #endif |
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