AnimationContext.cpp revision c7e2993628a6c87500cb7e5369e6a52eacb3280c 
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 "TreeInfo.h"
21#include "renderthread/TimeLord.h"
22
23namespace android {
24namespace uirenderer {
25
26AnimationContext::AnimationContext(renderthread::TimeLord& clock)
27        : mClock(clock)
28        , mCurrentFrameAnimations(*this)
29        , mNextFrameAnimations(*this)
30        , mFrameTimeMs(0) {
31}
32
33AnimationContext::~AnimationContext() {
34    startFrame();
35    while (mCurrentFrameAnimations.mNextHandle) {
36        AnimationHandle* current = mCurrentFrameAnimations.mNextHandle;
37        AnimatorManager& animators = current->mRenderNode->animators();
38        animators.endAllAnimators();
39        LOG_ALWAYS_FATAL_IF(mCurrentFrameAnimations.mNextHandle == current,
40                "endAllAnimators failed to remove from current frame list!");
41    }
42}
43
44void AnimationContext::addAnimatingRenderNode(RenderNode& node) {
45    if (!node.animators().hasAnimationHandle()) {
46        AnimationHandle* handle = new AnimationHandle(node, *this);
47        addAnimationHandle(handle);
48    }
49}
50
51void AnimationContext::addAnimationHandle(AnimationHandle* handle) {
52    handle->insertAfter(&mNextFrameAnimations);
53}
54
55void AnimationContext::startFrame() {
56    LOG_ALWAYS_FATAL_IF(mCurrentFrameAnimations.mNextHandle,
57            "Missed running animations last frame!");
58    AnimationHandle* head = mNextFrameAnimations.mNextHandle;
59    if (head) {
60        mNextFrameAnimations.mNextHandle = NULL;
61        mCurrentFrameAnimations.mNextHandle = head;
62        head->mPreviousHandle = &mCurrentFrameAnimations;
63    }
64    mFrameTimeMs = mClock.computeFrameTimeMs();
65}
66
67void 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
78void AnimationContext::callOnFinished(BaseRenderNodeAnimator* animator,
79        AnimationListener* listener) {
80    listener->onAnimationFinished(animator);
81}
82
83AnimationHandle::AnimationHandle(AnimationContext& context)
84        : mContext(context)
85        , mPreviousHandle(NULL)
86        , mNextHandle(NULL) {
87}
88
89AnimationHandle::AnimationHandle(RenderNode& animatingNode, AnimationContext& context)
90        : mRenderNode(&animatingNode)
91        , mContext(context)
92        , mPreviousHandle(NULL)
93        , mNextHandle(NULL) {
94    mRenderNode->animators().setAnimationHandle(this);
95}
96
97AnimationHandle::~AnimationHandle() {
98    LOG_ALWAYS_FATAL_IF(mPreviousHandle || mNextHandle,
99            "AnimationHandle destroyed while still animating!");
100}
101
102void AnimationHandle::notifyAnimationsRan() {
103    removeFromList();
104    if (mRenderNode->animators().hasAnimators()) {
105        mContext.addAnimationHandle(this);
106    } else {
107        release();
108    }
109}
110
111void AnimationHandle::release() {
112    LOG_ALWAYS_FATAL_IF(mRenderNode->animators().hasAnimators(),
113            "Releasing the handle for an RenderNode with outstanding animators!");
114    removeFromList();
115    mRenderNode->animators().setAnimationHandle(NULL);
116    delete this;
117}
118
119void AnimationHandle::insertAfter(AnimationHandle* prev) {
120    removeFromList();
121    mNextHandle = prev->mNextHandle;
122    if (mNextHandle) {
123        mNextHandle->mPreviousHandle = this;
124    }
125    prev->mNextHandle = this;
126    mPreviousHandle = prev;
127}
128
129void AnimationHandle::removeFromList() {
130    if (mPreviousHandle) {
131        mPreviousHandle->mNextHandle = mNextHandle;
132    }
133    if (mNextHandle) {
134        mNextHandle->mPreviousHandle = mPreviousHandle;
135    }
136    mPreviousHandle = NULL;
137    mNextHandle = NULL;
138}
139
140} /* namespace uirenderer */
141} /* namespace android */
142