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      1 /*
      2  * Copyright (C) 2016 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 
     17 #pragma once
     18 
     19 #include "Animator.h"
     20 #include "PropertyValuesHolder.h"
     21 #include "Interpolator.h"
     22 
     23 namespace android {
     24 namespace uirenderer {
     25 
     26 class PropertyAnimator {
     27 public:
     28     PropertyAnimator(PropertyValuesHolder* holder, Interpolator* interpolator, nsecs_t startDelay,
     29             nsecs_t duration, int repeatCount, RepeatMode repeatMode);
     30     void setCurrentPlayTime(nsecs_t playTime);
     31     nsecs_t getTotalDuration() {
     32         return mTotalDuration;
     33     }
     34     // fraction range: [0, 1], iteration range [0, repeatCount]
     35     void setFraction(float fraction, long iteration);
     36 
     37 private:
     38     std::unique_ptr<PropertyValuesHolder> mPropertyValuesHolder;
     39     std::unique_ptr<Interpolator> mInterpolator;
     40     nsecs_t mStartDelay;
     41     nsecs_t mDuration;
     42     uint32_t mRepeatCount;
     43     nsecs_t mTotalDuration;
     44     RepeatMode mRepeatMode;
     45     double mLatestFraction = 0;
     46 };
     47 
     48 // TODO: This class should really be named VectorDrawableAnimator
     49 class ANDROID_API PropertyValuesAnimatorSet : public BaseRenderNodeAnimator {
     50 public:
     51     friend class PropertyAnimatorSetListener;
     52     PropertyValuesAnimatorSet();
     53 
     54     void start(AnimationListener* listener);
     55     void reverse(AnimationListener* listener);
     56     virtual void reset() override;
     57     virtual void end() override;
     58 
     59     void addPropertyAnimator(PropertyValuesHolder* propertyValuesHolder,
     60             Interpolator* interpolators, int64_t startDelays,
     61             nsecs_t durations, int repeatCount, RepeatMode repeatMode);
     62     virtual uint32_t dirtyMask();
     63     bool isInfinite() { return mIsInfinite; }
     64     void setVectorDrawable(VectorDrawableRoot* vd) { mVectorDrawable = vd; }
     65     VectorDrawableRoot* getVectorDrawable() const { return mVectorDrawable.get(); }
     66     AnimationListener* getOneShotListener() { return mOneShotListener.get(); }
     67     void clearOneShotListener() { mOneShotListener = nullptr; }
     68     uint32_t getRequestId() const { return mRequestId; }
     69 
     70 protected:
     71     virtual float getValue(RenderNode* target) const override;
     72     virtual void setValue(RenderNode* target, float value) override;
     73     virtual void onPlayTimeChanged(nsecs_t playTime) override;
     74 
     75 private:
     76     void init();
     77     void onFinished(BaseRenderNodeAnimator* animator);
     78     // Listener set from outside
     79     sp<AnimationListener> mOneShotListener;
     80     std::vector< std::unique_ptr<PropertyAnimator> > mAnimators;
     81     float mLastFraction = 0.0f;
     82     bool mInitialized = false;
     83     sp<VectorDrawableRoot> mVectorDrawable;
     84     bool mIsInfinite = false;
     85     // This request id gets incremented (on UI thread only) when a new request to modfiy the
     86     // lifecycle of an animation happens, namely when start/end/reset/reverse is called.
     87     uint32_t mRequestId = 0;
     88 };
     89 
     90 class PropertyAnimatorSetListener : public AnimationListener {
     91 public:
     92     PropertyAnimatorSetListener(PropertyValuesAnimatorSet* set) : mSet(set) {}
     93     virtual void onAnimationFinished(BaseRenderNodeAnimator* animator) override;
     94 
     95 private:
     96     PropertyValuesAnimatorSet* mSet;
     97 };
     98 
     99 } // namespace uirenderer
    100 } // namespace android
    101