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| 1 /* | |
| 2 * Copyright (c) 2011, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #ifndef ScrollAnimatorNone_h | |
| 32 #define ScrollAnimatorNone_h | |
| 33 | |
| 34 #include "core/platform/ScrollAnimator.h" | |
| 35 #include "platform/Timer.h" | |
| 36 #include "platform/geometry/FloatPoint.h" | |
| 37 #include "wtf/OwnPtr.h" | |
| 38 | |
| 39 class ScrollAnimatorNoneTest; | |
| 40 | |
| 41 namespace WebCore { | |
| 42 | |
| 43 class IntPoint; | |
| 44 class ActivePlatformGestureAnimation; | |
| 45 struct ScrollAnimatorParameters; | |
| 46 | |
| 47 class ScrollAnimatorNone : public ScrollAnimator { | |
| 48 public: | |
| 49 explicit ScrollAnimatorNone(ScrollableArea*); | |
| 50 virtual ~ScrollAnimatorNone(); | |
| 51 | |
| 52 virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, flo
at multiplier); | |
| 53 virtual void scrollToOffsetWithoutAnimation(const FloatPoint&); | |
| 54 | |
| 55 virtual void cancelAnimations(); | |
| 56 virtual void serviceScrollAnimations(); | |
| 57 | |
| 58 virtual void willEndLiveResize(); | |
| 59 virtual void didAddVerticalScrollbar(Scrollbar*); | |
| 60 virtual void didAddHorizontalScrollbar(Scrollbar*); | |
| 61 | |
| 62 enum Curve { | |
| 63 Linear, | |
| 64 Quadratic, | |
| 65 Cubic, | |
| 66 Quartic, | |
| 67 Bounce | |
| 68 }; | |
| 69 | |
| 70 struct Parameters { | |
| 71 Parameters(); | |
| 72 Parameters(bool isEnabled, double animationTime, double repeatMinimumSus
tainTime, Curve attackCurve, double attackTime, Curve releaseCurve, double relea
seTime, Curve coastTimeCurve, double maximumCoastTime); | |
| 73 | |
| 74 // Note that the times can be overspecified such that releaseTime or rel
easeTime and attackTime are greater | |
| 75 // than animationTime. animationTime takes priority over releaseTime, ca
pping it. attackTime is capped at | |
| 76 // whatever time remains, or zero if none. | |
| 77 bool m_isEnabled; | |
| 78 double m_animationTime; | |
| 79 double m_repeatMinimumSustainTime; | |
| 80 | |
| 81 Curve m_attackCurve; | |
| 82 double m_attackTime; | |
| 83 | |
| 84 Curve m_releaseCurve; | |
| 85 double m_releaseTime; | |
| 86 | |
| 87 Curve m_coastTimeCurve; | |
| 88 double m_maximumCoastTime; | |
| 89 }; | |
| 90 | |
| 91 protected: | |
| 92 virtual void animationWillStart() { } | |
| 93 virtual void animationDidFinish() { } | |
| 94 | |
| 95 Parameters parametersForScrollGranularity(ScrollGranularity) const; | |
| 96 | |
| 97 friend class ::ScrollAnimatorNoneTest; | |
| 98 | |
| 99 struct PerAxisData { | |
| 100 PerAxisData(ScrollAnimatorNone* parent, float* currentPos, int visibleLe
ngth); | |
| 101 void reset(); | |
| 102 bool updateDataFromParameters(float step, float multiplier, float scroll
ableSize, double currentTime, Parameters*); | |
| 103 bool animateScroll(double currentTime); | |
| 104 void updateVisibleLength(int visibleLength); | |
| 105 | |
| 106 static double curveAt(Curve, double t); | |
| 107 static double attackCurve(Curve, double deltaT, double curveT, double st
artPos, double attackPos); | |
| 108 static double releaseCurve(Curve, double deltaT, double curveT, double r
eleasePos, double desiredPos); | |
| 109 static double coastCurve(Curve, double factor); | |
| 110 | |
| 111 static double curveIntegralAt(Curve, double t); | |
| 112 static double attackArea(Curve, double startT, double endT); | |
| 113 static double releaseArea(Curve, double startT, double endT); | |
| 114 | |
| 115 float* m_currentPosition; | |
| 116 double m_currentVelocity; | |
| 117 | |
| 118 double m_desiredPosition; | |
| 119 double m_desiredVelocity; | |
| 120 | |
| 121 double m_startPosition; | |
| 122 double m_startTime; | |
| 123 double m_startVelocity; | |
| 124 | |
| 125 double m_animationTime; | |
| 126 double m_lastAnimationTime; | |
| 127 | |
| 128 double m_attackPosition; | |
| 129 double m_attackTime; | |
| 130 Curve m_attackCurve; | |
| 131 | |
| 132 double m_releasePosition; | |
| 133 double m_releaseTime; | |
| 134 Curve m_releaseCurve; | |
| 135 | |
| 136 int m_visibleLength; | |
| 137 }; | |
| 138 | |
| 139 void startNextTimer(); | |
| 140 void animationTimerFired(); | |
| 141 | |
| 142 void stopAnimationTimerIfNeeded(); | |
| 143 bool animationTimerActive(); | |
| 144 void updateVisibleLengths(); | |
| 145 | |
| 146 PerAxisData m_horizontalData; | |
| 147 PerAxisData m_verticalData; | |
| 148 | |
| 149 double m_startTime; | |
| 150 bool m_animationActive; | |
| 151 }; | |
| 152 | |
| 153 } // namespace WebCore | |
| 154 | |
| 155 #endif // ScrollAnimatorNone_h | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk