| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2011 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 "ui/base/animation/linear_animation.h" | |
| 6 | |
| 7 #include <math.h> | |
| 8 | |
| 9 #include "ui/base/animation/animation_container.h" | |
| 10 #include "ui/base/animation/animation_delegate.h" | |
| 11 | |
| 12 using base::Time; | |
| 13 using base::TimeDelta; | |
| 14 | |
| 15 namespace ui { | |
| 16 | |
| 17 static TimeDelta CalculateInterval(int frame_rate) { | |
| 18 int timer_interval = 1000000 / frame_rate; | |
| 19 if (timer_interval < 10000) | |
| 20 timer_interval = 10000; | |
| 21 return TimeDelta::FromMicroseconds(timer_interval); | |
| 22 } | |
| 23 | |
| 24 LinearAnimation::LinearAnimation(int frame_rate, | |
| 25 AnimationDelegate* delegate) | |
| 26 : Animation(CalculateInterval(frame_rate)), | |
| 27 state_(0.0), | |
| 28 in_end_(false) { | |
| 29 set_delegate(delegate); | |
| 30 } | |
| 31 | |
| 32 LinearAnimation::LinearAnimation(int duration, | |
| 33 int frame_rate, | |
| 34 AnimationDelegate* delegate) | |
| 35 : Animation(CalculateInterval(frame_rate)), | |
| 36 duration_(TimeDelta::FromMilliseconds(duration)), | |
| 37 state_(0.0), | |
| 38 in_end_(false) { | |
| 39 set_delegate(delegate); | |
| 40 SetDuration(duration); | |
| 41 } | |
| 42 | |
| 43 double LinearAnimation::GetCurrentValue() const { | |
| 44 // Default is linear relationship, subclass to adapt. | |
| 45 return state_; | |
| 46 } | |
| 47 | |
| 48 void LinearAnimation::SetCurrentValue(double new_value) { | |
| 49 new_value = std::max(0.0, std::min(1.0, new_value)); | |
| 50 base::TimeDelta time_delta = base::TimeDelta::FromMicroseconds( | |
| 51 duration_.InMicroseconds() * (new_value - state_)); | |
| 52 SetStartTime(start_time() - time_delta); | |
| 53 state_ = new_value; | |
| 54 } | |
| 55 | |
| 56 void LinearAnimation::End() { | |
| 57 if (!is_animating()) | |
| 58 return; | |
| 59 | |
| 60 // NOTE: We don't use AutoReset here as Stop may end up deleting us (by way | |
| 61 // of the delegate). | |
| 62 in_end_ = true; | |
| 63 Stop(); | |
| 64 } | |
| 65 | |
| 66 void LinearAnimation::SetDuration(int duration) { | |
| 67 duration_ = TimeDelta::FromMilliseconds(duration); | |
| 68 if (duration_ < timer_interval()) | |
| 69 duration_ = timer_interval(); | |
| 70 if (is_animating()) | |
| 71 SetStartTime(container()->last_tick_time()); | |
| 72 } | |
| 73 | |
| 74 void LinearAnimation::Step(base::TimeTicks time_now) { | |
| 75 TimeDelta elapsed_time = time_now - start_time(); | |
| 76 state_ = static_cast<double>(elapsed_time.InMicroseconds()) / | |
| 77 static_cast<double>(duration_.InMicroseconds()); | |
| 78 if (state_ >= 1.0) | |
| 79 state_ = 1.0; | |
| 80 | |
| 81 AnimateToState(state_); | |
| 82 | |
| 83 if (delegate()) | |
| 84 delegate()->AnimationProgressed(this); | |
| 85 | |
| 86 if (state_ == 1.0) | |
| 87 Stop(); | |
| 88 } | |
| 89 | |
| 90 void LinearAnimation::AnimationStarted() { | |
| 91 state_ = 0.0; | |
| 92 } | |
| 93 | |
| 94 void LinearAnimation::AnimationStopped() { | |
| 95 if (!in_end_) | |
| 96 return; | |
| 97 | |
| 98 in_end_ = false; | |
| 99 // Set state_ to ensure we send ended to delegate and not canceled. | |
| 100 state_ = 1; | |
| 101 AnimateToState(1.0); | |
| 102 } | |
| 103 | |
| 104 bool LinearAnimation::ShouldSendCanceledFromStop() { | |
| 105 return state_ != 1; | |
| 106 } | |
| 107 | |
| 108 } // namespace ui | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 23531053:
ui/base/animation -> ui/gfx/animation (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src