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1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include "AnimationContext.h"
17 
18 #include "Animator.h"
19 #include "RenderNode.h"
20 #include "renderthread/TimeLord.h"
21 
22 namespace android {
23 namespace uirenderer {
24 
AnimationContext(renderthread::TimeLord & clock)25 AnimationContext::AnimationContext(renderthread::TimeLord& clock)
26         : mClock(clock)
27         , mCurrentFrameAnimations(*this)
28         , mNextFrameAnimations(*this)
29         , mFrameTimeMs(0) {}
30 
~AnimationContext()31 AnimationContext::~AnimationContext() {}
32 
destroy()33 void AnimationContext::destroy() {
34     startFrame(TreeInfo::MODE_RT_ONLY);
35     while (mCurrentFrameAnimations.mNextHandle) {
36         AnimationHandle* current = mCurrentFrameAnimations.mNextHandle;
37         AnimatorManager& animators = current->mRenderNode->animators();
38         animators.endAllActiveAnimators();
39         LOG_ALWAYS_FATAL_IF(mCurrentFrameAnimations.mNextHandle == current,
40                             "endAllAnimators failed to remove from current frame list!");
41     }
42 }
43 
addAnimatingRenderNode(RenderNode & node)44 void AnimationContext::addAnimatingRenderNode(RenderNode& node) {
45     if (!node.animators().hasAnimationHandle()) {
46         AnimationHandle* handle = new AnimationHandle(node, *this);
47         addAnimationHandle(handle);
48     }
49 }
50 
addAnimationHandle(AnimationHandle * handle)51 void AnimationContext::addAnimationHandle(AnimationHandle* handle) {
52     handle->insertAfter(&mNextFrameAnimations);
53 }
54 
startFrame(TreeInfo::TraversalMode mode)55 void AnimationContext::startFrame(TreeInfo::TraversalMode mode) {
56     LOG_ALWAYS_FATAL_IF(mCurrentFrameAnimations.mNextHandle,
57                         "Missed running animations last frame!");
58     AnimationHandle* head = mNextFrameAnimations.mNextHandle;
59     if (head) {
60         mNextFrameAnimations.mNextHandle = nullptr;
61         mCurrentFrameAnimations.mNextHandle = head;
62         head->mPreviousHandle = &mCurrentFrameAnimations;
63     }
64     mFrameTimeMs = ns2ms(mClock.latestVsync());
65 }
66 
runRemainingAnimations(TreeInfo & info)67 void AnimationContext::runRemainingAnimations(TreeInfo& info) {
68     while (mCurrentFrameAnimations.mNextHandle) {
69         AnimationHandle* current = mCurrentFrameAnimations.mNextHandle;
70         AnimatorManager& animators = current->mRenderNode->animators();
71         animators.pushStaging();
72         animators.animateNoDamage(info);
73         LOG_ALWAYS_FATAL_IF(mCurrentFrameAnimations.mNextHandle == current,
74                             "Animate failed to remove from current frame list!");
75     }
76 }
77 
callOnFinished(BaseRenderNodeAnimator * animator,AnimationListener * listener)78 void AnimationContext::callOnFinished(BaseRenderNodeAnimator* animator,
79                                       AnimationListener* listener) {
80     listener->onAnimationFinished(animator);
81 }
82 
AnimationHandle(AnimationContext & context)83 AnimationHandle::AnimationHandle(AnimationContext& context)
84         : mContext(context), mPreviousHandle(nullptr), mNextHandle(nullptr) {}
85 
AnimationHandle(RenderNode & animatingNode,AnimationContext & context)86 AnimationHandle::AnimationHandle(RenderNode& animatingNode, AnimationContext& context)
87         : mRenderNode(&animatingNode)
88         , mContext(context)
89         , mPreviousHandle(nullptr)
90         , mNextHandle(nullptr) {
91     mRenderNode->animators().setAnimationHandle(this);
92 }
93 
~AnimationHandle()94 AnimationHandle::~AnimationHandle() {
95     LOG_ALWAYS_FATAL_IF(mPreviousHandle || mNextHandle,
96                         "AnimationHandle destroyed while still animating!");
97 }
98 
notifyAnimationsRan()99 void AnimationHandle::notifyAnimationsRan() {
100     removeFromList();
101     if (mRenderNode->animators().hasAnimators()) {
102         mContext.addAnimationHandle(this);
103     } else {
104         release();
105     }
106 }
107 
release()108 void AnimationHandle::release() {
109     LOG_ALWAYS_FATAL_IF(mRenderNode->animators().hasAnimators(),
110                         "Releasing the handle for an RenderNode with outstanding animators!");
111     removeFromList();
112     mRenderNode->animators().setAnimationHandle(nullptr);
113     delete this;
114 }
115 
insertAfter(AnimationHandle * prev)116 void AnimationHandle::insertAfter(AnimationHandle* prev) {
117     removeFromList();
118     mNextHandle = prev->mNextHandle;
119     if (mNextHandle) {
120         mNextHandle->mPreviousHandle = this;
121     }
122     prev->mNextHandle = this;
123     mPreviousHandle = prev;
124 }
125 
removeFromList()126 void AnimationHandle::removeFromList() {
127     if (mPreviousHandle) {
128         mPreviousHandle->mNextHandle = mNextHandle;
129     }
130     if (mNextHandle) {
131         mNextHandle->mPreviousHandle = mPreviousHandle;
132     }
133     mPreviousHandle = nullptr;
134     mNextHandle = nullptr;
135 }
136 
137 } /* namespace uirenderer */
138 } /* namespace android */
139