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| 1 // Copyright 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "config.h" | |
| 6 | |
| 7 #include "CCScrollbarAnimationControllerLinearFade.h" | |
| 8 | |
| 9 #include "CCScrollbarLayerImpl.h" | |
| 10 | |
| 11 namespace cc { | |
| 12 | |
| 13 PassOwnPtr<CCScrollbarAnimationControllerLinearFade> CCScrollbarAnimationControl
lerLinearFade::create(CCLayerImpl* scrollLayer, double fadeoutDelay, double fade
outLength) | |
| 14 { | |
| 15 return adoptPtr(new CCScrollbarAnimationControllerLinearFade(scrollLayer, fa
deoutDelay, fadeoutLength)); | |
| 16 } | |
| 17 | |
| 18 CCScrollbarAnimationControllerLinearFade::CCScrollbarAnimationControllerLinearFa
de(CCLayerImpl* scrollLayer, double fadeoutDelay, double fadeoutLength) | |
| 19 : CCScrollbarAnimationController(scrollLayer) | |
| 20 , m_lastAwakenTime(-100000000) // arbitrary invalid timestamp | |
| 21 , m_pinchGestureInEffect(false) | |
| 22 , m_fadeoutDelay(fadeoutDelay) | |
| 23 , m_fadeoutLength(fadeoutLength) | |
| 24 { | |
| 25 } | |
| 26 | |
| 27 CCScrollbarAnimationControllerLinearFade::~CCScrollbarAnimationControllerLinearF
ade() | |
| 28 { | |
| 29 } | |
| 30 | |
| 31 bool CCScrollbarAnimationControllerLinearFade::animate(double monotonicTime) | |
| 32 { | |
| 33 float opacity = opacityAtTime(monotonicTime); | |
| 34 if (horizontalScrollbarLayer()) | |
| 35 horizontalScrollbarLayer()->setOpacity(opacity); | |
| 36 if (verticalScrollbarLayer()) | |
| 37 verticalScrollbarLayer()->setOpacity(opacity); | |
| 38 return opacity; | |
| 39 } | |
| 40 | |
| 41 void CCScrollbarAnimationControllerLinearFade::didPinchGestureUpdateAtTime(doubl
e) | |
| 42 { | |
| 43 m_pinchGestureInEffect = true; | |
| 44 } | |
| 45 | |
| 46 void CCScrollbarAnimationControllerLinearFade::didPinchGestureEndAtTime(double m
onotonicTime) | |
| 47 { | |
| 48 m_pinchGestureInEffect = false; | |
| 49 m_lastAwakenTime = monotonicTime; | |
| 50 } | |
| 51 | |
| 52 void CCScrollbarAnimationControllerLinearFade::updateScrollOffsetAtTime(CCLayerI
mpl* scrollLayer, double monotonicTime) | |
| 53 { | |
| 54 FloatPoint previousPos = currentPos(); | |
| 55 CCScrollbarAnimationController::updateScrollOffsetAtTime(scrollLayer, monoto
nicTime); | |
| 56 | |
| 57 if (previousPos == currentPos()) | |
| 58 return; | |
| 59 | |
| 60 m_lastAwakenTime = monotonicTime; | |
| 61 } | |
| 62 | |
| 63 float CCScrollbarAnimationControllerLinearFade::opacityAtTime(double monotonicTi
me) | |
| 64 { | |
| 65 if (m_pinchGestureInEffect) | |
| 66 return 1; | |
| 67 | |
| 68 double delta = monotonicTime - m_lastAwakenTime; | |
| 69 | |
| 70 if (delta <= m_fadeoutDelay) | |
| 71 return 1; | |
| 72 if (delta < m_fadeoutDelay + m_fadeoutLength) | |
| 73 return (m_fadeoutDelay + m_fadeoutLength - delta) / m_fadeoutLength; | |
| 74 return 0; | |
| 75 } | |
| 76 | |
| 77 } // namespace cc | |
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Chromium Code Reviews
Issue 11122003:
[cc] Rename all cc/ filenames to Chromium style (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src