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| author | jamesr@chromium.org <jamesr@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-03-18 07:09:09 +0000 |
|---|---|---|
| committer | jamesr@chromium.org <jamesr@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-03-18 07:09:09 +0000 |
| commit | 95e4e1a0fda6929b47702e69e4ddfe384b5d014b (patch) | |
| tree | 1cf6fc6d2d063aac4a14388de969a5214e2e9243 /cc/animation/scrollbar_animation_controller_linear_fade.h | |
| parent | a2f3755a9e22ced917b1dda50c57e4e912594e9d (diff) | |
| download | chromium_src-95e4e1a0fda6929b47702e69e4ddfe384b5d014b.zip chromium_src-95e4e1a0fda6929b47702e69e4ddfe384b5d014b.tar.gz chromium_src-95e4e1a0fda6929b47702e69e4ddfe384b5d014b.tar.bz2 | |
Part 3 of cc/ directory shuffles: animation
Continuation of https://src.chromium.org/viewvc/chrome?view=rev&revision=188681
BUG=190824
TBR=enne@chromium.org, vollick@chromium.org
Review URL: https://codereview.chromium.org/12822004
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@188688 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'cc/animation/scrollbar_animation_controller_linear_fade.h')
| -rw-r--r-- | cc/animation/scrollbar_animation_controller_linear_fade.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/cc/animation/scrollbar_animation_controller_linear_fade.h b/cc/animation/scrollbar_animation_controller_linear_fade.h new file mode 100644 index 0000000..a126306 --- /dev/null +++ b/cc/animation/scrollbar_animation_controller_linear_fade.h @@ -0,0 +1,50 @@ +// Copyright 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef CC_ANIMATION_SCROLLBAR_ANIMATION_CONTROLLER_LINEAR_FADE_H_ +#define CC_ANIMATION_SCROLLBAR_ANIMATION_CONTROLLER_LINEAR_FADE_H_ + +#include "base/memory/scoped_ptr.h" +#include "cc/animation/scrollbar_animation_controller.h" +#include "cc/base/cc_export.h" + +namespace cc { +class LayerImpl; + +class CC_EXPORT ScrollbarAnimationControllerLinearFade : public ScrollbarAnimationController { +public: + static scoped_ptr<ScrollbarAnimationControllerLinearFade> create(LayerImpl* scrollLayer, base::TimeDelta fadeoutDelay, base::TimeDelta fadeoutLength); + + virtual ~ScrollbarAnimationControllerLinearFade(); + + // ScrollbarAnimationController overrides. + virtual bool isScrollGestureInProgress() const OVERRIDE; + virtual bool isAnimating() const OVERRIDE; + virtual base::TimeDelta delayBeforeStart(base::TimeTicks now) const OVERRIDE; + + virtual bool animate(base::TimeTicks) OVERRIDE; + virtual void didScrollGestureBegin() OVERRIDE; + virtual void didScrollGestureEnd(base::TimeTicks now) OVERRIDE; + virtual void didProgrammaticallyUpdateScroll(base::TimeTicks now) OVERRIDE; + +protected: + ScrollbarAnimationControllerLinearFade(LayerImpl* scrollLayer, base::TimeDelta fadeoutDelay, base::TimeDelta fadeoutLength); + +private: + float opacityAtTime(base::TimeTicks); + + LayerImpl* m_scrollLayer; + + base::TimeTicks m_lastAwakenTime; + bool m_scrollGestureInProgress; + + base::TimeDelta m_fadeoutDelay; + base::TimeDelta m_fadeoutLength; + + double m_currentTimeForTesting; +}; + +} // namespace cc + +#endif // CC_ANIMATION_SCROLLBAR_ANIMATION_CONTROLLER_LINEAR_FADE_H_ |