libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/TaskFragmentAnimationSpec.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2021 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package androidx.window.extensions.embedding;

 import static android.view.RemoteAnimationTarget.MODE_CLOSING;

 import android.app.ActivityThread;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.database.ContentObserver;
 import android.graphics.Rect;
 import android.os.Handler;
 import android.provider.Settings;
 import android.view.RemoteAnimationTarget;
 import android.view.animation.AlphaAnimation;
 import android.view.animation.Animation;
 import android.view.animation.AnimationSet;
 import android.view.animation.AnimationUtils;
 import android.view.animation.ClipRectAnimation;
 import android.view.animation.Interpolator;
 import android.view.animation.LinearInterpolator;
 import android.view.animation.ScaleAnimation;
 import android.view.animation.TranslateAnimation;

 import androidx.annotation.NonNull;

 import com.android.internal.R;
 import com.android.internal.policy.AttributeCache;
 import com.android.internal.policy.TransitionAnimation;

 /** Animation spec for TaskFragment transition. */
 // TODO(b/206557124): provide an easier way to customize animation
 class TaskFragmentAnimationSpec {

     private static final String TAG = "TaskFragAnimationSpec";
     private static final int CHANGE_ANIMATION_DURATION = 517;
     private static final int CHANGE_ANIMATION_FADE_DURATION = 80;
     private static final int CHANGE_ANIMATION_FADE_OFFSET = 30;

     private final Context mContext;
     private final TransitionAnimation mTransitionAnimation;
     private final Interpolator mFastOutExtraSlowInInterpolator;
     private final LinearInterpolator mLinearInterpolator;
     private float mTransitionAnimationScaleSetting;

     TaskFragmentAnimationSpec(@NonNull Handler handler) {
         mContext = ActivityThread.currentActivityThread().getApplication();
         mTransitionAnimation = new TransitionAnimation(mContext, false /* debug */, TAG);
         // Initialize the AttributeCache for the TransitionAnimation.
         AttributeCache.init(mContext);
         mFastOutExtraSlowInInterpolator = AnimationUtils.loadInterpolator(
                 mContext, android.R.interpolator.fast_out_extra_slow_in);
         mLinearInterpolator = new LinearInterpolator();

         // The transition animation should be adjusted based on the developer option.
         final ContentResolver resolver = mContext.getContentResolver();
         mTransitionAnimationScaleSetting = Settings.Global.getFloat(resolver,
                 Settings.Global.TRANSITION_ANIMATION_SCALE,
                 mContext.getResources().getFloat(
                         R.dimen.config_appTransitionAnimationDurationScaleDefault));
         resolver.registerContentObserver(
                 Settings.Global.getUriFor(Settings.Global.TRANSITION_ANIMATION_SCALE), false,
                 new SettingsObserver(handler));
     }

     /** For target that doesn't need to be animated. */
     static Animation createNoopAnimation(@NonNull RemoteAnimationTarget target) {
         // Noop but just keep the target showing/hiding.
         final float alpha = target.mode == MODE_CLOSING ? 0f : 1f;
         return new AlphaAnimation(alpha, alpha);
     }

     /** Animation for target that is opening in a change transition. */
     Animation createChangeBoundsOpenAnimation(@NonNull RemoteAnimationTarget target) {
         final Rect bounds = target.localBounds;
         // The target will be animated in from left or right depends on its position.
         final int startLeft = bounds.left == 0 ? -bounds.width() : bounds.width();

         // The position should be 0-based as we will post translate in
         // TaskFragmentAnimationAdapter#onAnimationUpdate
         final Animation animation = new TranslateAnimation(startLeft, 0, 0, 0);
         animation.setInterpolator(mFastOutExtraSlowInInterpolator);
         animation.setDuration(CHANGE_ANIMATION_DURATION);
         animation.initialize(bounds.width(), bounds.height(), bounds.width(), bounds.height());
         animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
         return animation;
     }

     /** Animation for target that is closing in a change transition. */
     Animation createChangeBoundsCloseAnimation(@NonNull RemoteAnimationTarget target) {
         final Rect bounds = target.localBounds;
         // The target will be animated out to left or right depends on its position.
         final int endLeft = bounds.left == 0 ? -bounds.width() : bounds.width();

         // The position should be 0-based as we will post translate in
         // TaskFragmentAnimationAdapter#onAnimationUpdate
         final Animation animation = new TranslateAnimation(0, endLeft, 0, 0);
         animation.setInterpolator(mFastOutExtraSlowInInterpolator);
         animation.setDuration(CHANGE_ANIMATION_DURATION);
         animation.initialize(bounds.width(), bounds.height(), bounds.width(), bounds.height());
         animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
         return animation;
     }

     /**
      * Animation for target that is changing (bounds change) in a change transition.
      * @return the return array always has two elements. The first one is for the start leash, and
      *         the second one is for the end leash.
      */
     Animation[] createChangeBoundsChangeAnimations(@NonNull RemoteAnimationTarget target) {
         // Both start bounds and end bounds are in screen coordinates. We will post translate
         // to the local coordinates in TaskFragmentAnimationAdapter#onAnimationUpdate
         final Rect startBounds = target.startBounds;
         final Rect parentBounds = target.taskInfo.configuration.windowConfiguration.getBounds();
         final Rect endBounds = target.screenSpaceBounds;
         float scaleX = ((float) startBounds.width()) / endBounds.width();
         float scaleY = ((float) startBounds.height()) / endBounds.height();
         // Start leash is a child of the end leash. Reverse the scale so that the start leash won't
         // be scaled up with its parent.
         float startScaleX = 1.f / scaleX;
         float startScaleY = 1.f / scaleY;

         // The start leash will be fade out.
         final AnimationSet startSet = new AnimationSet(false /* shareInterpolator */);
         final Animation startAlpha = new AlphaAnimation(1f, 0f);
         startAlpha.setInterpolator(mLinearInterpolator);
         startAlpha.setDuration(CHANGE_ANIMATION_FADE_DURATION);
         startAlpha.setStartOffset(CHANGE_ANIMATION_FADE_OFFSET);
         startSet.addAnimation(startAlpha);
         final Animation startScale = new ScaleAnimation(startScaleX, startScaleX, startScaleY,
                 startScaleY);
         startScale.setInterpolator(mFastOutExtraSlowInInterpolator);
         startScale.setDuration(CHANGE_ANIMATION_DURATION);
         startSet.addAnimation(startScale);
         startSet.initialize(startBounds.width(), startBounds.height(), endBounds.width(),
                 endBounds.height());
         startSet.scaleCurrentDuration(mTransitionAnimationScaleSetting);

         // The end leash will be moved into the end position while scaling.
         final AnimationSet endSet = new AnimationSet(true /* shareInterpolator */);
         endSet.setInterpolator(mFastOutExtraSlowInInterpolator);
         final Animation endScale = new ScaleAnimation(scaleX, 1, scaleY, 1);
         endScale.setDuration(CHANGE_ANIMATION_DURATION);
         endSet.addAnimation(endScale);
         // The position should be 0-based as we will post translate in
         // TaskFragmentAnimationAdapter#onAnimationUpdate
         final Animation endTranslate = new TranslateAnimation(startBounds.left - endBounds.left, 0,
                 0, 0);
         endTranslate.setDuration(CHANGE_ANIMATION_DURATION);
         endSet.addAnimation(endTranslate);
         // The end leash is resizing, we should update the window crop based on the clip rect.
         final Rect startClip = new Rect(startBounds);
         final Rect endClip = new Rect(endBounds);
         startClip.offsetTo(0, 0);
         endClip.offsetTo(0, 0);
         final Animation clipAnim = new ClipRectAnimation(startClip, endClip);
         clipAnim.setDuration(CHANGE_ANIMATION_DURATION);
         endSet.addAnimation(clipAnim);
         endSet.initialize(startBounds.width(), startBounds.height(), parentBounds.width(),
                 parentBounds.height());
         endSet.scaleCurrentDuration(mTransitionAnimationScaleSetting);

         return new Animation[]{startSet, endSet};
     }

     Animation loadOpenAnimation(@NonNull RemoteAnimationTarget target,
             @NonNull Rect wholeAnimationBounds) {
         final boolean isEnter = target.mode != MODE_CLOSING;
         final Animation animation = mTransitionAnimation.loadDefaultAnimationRes(isEnter
                 ? com.android.internal.R.anim.task_fragment_open_enter
                 : com.android.internal.R.anim.task_fragment_open_exit);
         animation.initialize(target.localBounds.width(), target.localBounds.height(),
                 wholeAnimationBounds.width(), wholeAnimationBounds.height());
         animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
         return animation;
     }

     Animation loadCloseAnimation(@NonNull RemoteAnimationTarget target,
             @NonNull Rect wholeAnimationBounds) {
         final boolean isEnter = target.mode != MODE_CLOSING;
         final Animation animation = mTransitionAnimation.loadDefaultAnimationRes(isEnter
                 ? com.android.internal.R.anim.task_fragment_close_enter
                 : com.android.internal.R.anim.task_fragment_close_exit);
         animation.initialize(target.localBounds.width(), target.localBounds.height(),
                 wholeAnimationBounds.width(), wholeAnimationBounds.height());
         animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
         return animation;
     }

     private class SettingsObserver extends ContentObserver {
         SettingsObserver(@NonNull Handler handler) {
             super(handler);
         }

         @Override
         public void onChange(boolean selfChange) {
             mTransitionAnimationScaleSetting = Settings.Global.getFloat(
                     mContext.getContentResolver(), Settings.Global.TRANSITION_ANIMATION_SCALE,
                     mTransitionAnimationScaleSetting);
         }
     }
 }
	/*
	* Copyright (C) 2021 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package androidx.window.extensions.embedding;

	import static android.view.RemoteAnimationTarget.MODE_CLOSING;

	import android.app.ActivityThread;
	import android.content.ContentResolver;
	import android.content.Context;
	import android.database.ContentObserver;
	import android.graphics.Rect;
	import android.os.Handler;
	import android.provider.Settings;
	import android.view.RemoteAnimationTarget;
	import android.view.animation.AlphaAnimation;
	import android.view.animation.Animation;
	import android.view.animation.AnimationSet;
	import android.view.animation.AnimationUtils;
	import android.view.animation.ClipRectAnimation;
	import android.view.animation.Interpolator;
	import android.view.animation.LinearInterpolator;
	import android.view.animation.ScaleAnimation;
	import android.view.animation.TranslateAnimation;

	import androidx.annotation.NonNull;

	import com.android.internal.R;
	import com.android.internal.policy.AttributeCache;
	import com.android.internal.policy.TransitionAnimation;

	/** Animation spec for TaskFragment transition. */
	// TODO(b/206557124): provide an easier way to customize animation
	class TaskFragmentAnimationSpec {

	private static final String TAG = "TaskFragAnimationSpec";
	private static final int CHANGE_ANIMATION_DURATION = 517;
	private static final int CHANGE_ANIMATION_FADE_DURATION = 80;
	private static final int CHANGE_ANIMATION_FADE_OFFSET = 30;

	private final Context mContext;
	private final TransitionAnimation mTransitionAnimation;
	private final Interpolator mFastOutExtraSlowInInterpolator;
	private final LinearInterpolator mLinearInterpolator;
	private float mTransitionAnimationScaleSetting;

	TaskFragmentAnimationSpec(@NonNull Handler handler) {
	mContext = ActivityThread.currentActivityThread().getApplication();
	mTransitionAnimation = new TransitionAnimation(mContext, false /* debug */, TAG);
	// Initialize the AttributeCache for the TransitionAnimation.
	AttributeCache.init(mContext);
	mFastOutExtraSlowInInterpolator = AnimationUtils.loadInterpolator(
	mContext, android.R.interpolator.fast_out_extra_slow_in);
	mLinearInterpolator = new LinearInterpolator();

	// The transition animation should be adjusted based on the developer option.
	final ContentResolver resolver = mContext.getContentResolver();
	mTransitionAnimationScaleSetting = Settings.Global.getFloat(resolver,
	Settings.Global.TRANSITION_ANIMATION_SCALE,
	mContext.getResources().getFloat(
	R.dimen.config_appTransitionAnimationDurationScaleDefault));
	resolver.registerContentObserver(
	Settings.Global.getUriFor(Settings.Global.TRANSITION_ANIMATION_SCALE), false,
	new SettingsObserver(handler));
	}

	/** For target that doesn't need to be animated. */
	static Animation createNoopAnimation(@NonNull RemoteAnimationTarget target) {
	// Noop but just keep the target showing/hiding.
	final float alpha = target.mode == MODE_CLOSING ? 0f : 1f;
	return new AlphaAnimation(alpha, alpha);
	}

	/** Animation for target that is opening in a change transition. */
	Animation createChangeBoundsOpenAnimation(@NonNull RemoteAnimationTarget target) {
	final Rect bounds = target.localBounds;
	// The target will be animated in from left or right depends on its position.
	final int startLeft = bounds.left == 0 ? -bounds.width() : bounds.width();

	// The position should be 0-based as we will post translate in
	// TaskFragmentAnimationAdapter#onAnimationUpdate
	final Animation animation = new TranslateAnimation(startLeft, 0, 0, 0);
	animation.setInterpolator(mFastOutExtraSlowInInterpolator);
	animation.setDuration(CHANGE_ANIMATION_DURATION);
	animation.initialize(bounds.width(), bounds.height(), bounds.width(), bounds.height());
	animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
	return animation;
	}

	/** Animation for target that is closing in a change transition. */
	Animation createChangeBoundsCloseAnimation(@NonNull RemoteAnimationTarget target) {
	final Rect bounds = target.localBounds;
	// The target will be animated out to left or right depends on its position.
	final int endLeft = bounds.left == 0 ? -bounds.width() : bounds.width();

	// The position should be 0-based as we will post translate in
	// TaskFragmentAnimationAdapter#onAnimationUpdate
	final Animation animation = new TranslateAnimation(0, endLeft, 0, 0);
	animation.setInterpolator(mFastOutExtraSlowInInterpolator);
	animation.setDuration(CHANGE_ANIMATION_DURATION);
	animation.initialize(bounds.width(), bounds.height(), bounds.width(), bounds.height());
	animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
	return animation;
	}

	/**
	* Animation for target that is changing (bounds change) in a change transition.
	* @return the return array always has two elements. The first one is for the start leash, and
	* the second one is for the end leash.
	*/
	Animation[] createChangeBoundsChangeAnimations(@NonNull RemoteAnimationTarget target) {
	// Both start bounds and end bounds are in screen coordinates. We will post translate
	// to the local coordinates in TaskFragmentAnimationAdapter#onAnimationUpdate
	final Rect startBounds = target.startBounds;
	final Rect parentBounds = target.taskInfo.configuration.windowConfiguration.getBounds();
	final Rect endBounds = target.screenSpaceBounds;
	float scaleX = ((float) startBounds.width()) / endBounds.width();
	float scaleY = ((float) startBounds.height()) / endBounds.height();
	// Start leash is a child of the end leash. Reverse the scale so that the start leash won't
	// be scaled up with its parent.
	float startScaleX = 1.f / scaleX;
	float startScaleY = 1.f / scaleY;

	// The start leash will be fade out.
	final AnimationSet startSet = new AnimationSet(false /* shareInterpolator */);
	final Animation startAlpha = new AlphaAnimation(1f, 0f);
	startAlpha.setInterpolator(mLinearInterpolator);
	startAlpha.setDuration(CHANGE_ANIMATION_FADE_DURATION);
	startAlpha.setStartOffset(CHANGE_ANIMATION_FADE_OFFSET);
	startSet.addAnimation(startAlpha);
	final Animation startScale = new ScaleAnimation(startScaleX, startScaleX, startScaleY,
	startScaleY);
	startScale.setInterpolator(mFastOutExtraSlowInInterpolator);
	startScale.setDuration(CHANGE_ANIMATION_DURATION);
	startSet.addAnimation(startScale);
	startSet.initialize(startBounds.width(), startBounds.height(), endBounds.width(),
	endBounds.height());
	startSet.scaleCurrentDuration(mTransitionAnimationScaleSetting);

	// The end leash will be moved into the end position while scaling.
	final AnimationSet endSet = new AnimationSet(true /* shareInterpolator */);
	endSet.setInterpolator(mFastOutExtraSlowInInterpolator);
	final Animation endScale = new ScaleAnimation(scaleX, 1, scaleY, 1);
	endScale.setDuration(CHANGE_ANIMATION_DURATION);
	endSet.addAnimation(endScale);
	// The position should be 0-based as we will post translate in
	// TaskFragmentAnimationAdapter#onAnimationUpdate
	final Animation endTranslate = new TranslateAnimation(startBounds.left - endBounds.left, 0,
	0, 0);
	endTranslate.setDuration(CHANGE_ANIMATION_DURATION);
	endSet.addAnimation(endTranslate);
	// The end leash is resizing, we should update the window crop based on the clip rect.
	final Rect startClip = new Rect(startBounds);
	final Rect endClip = new Rect(endBounds);
	startClip.offsetTo(0, 0);
	endClip.offsetTo(0, 0);
	final Animation clipAnim = new ClipRectAnimation(startClip, endClip);
	clipAnim.setDuration(CHANGE_ANIMATION_DURATION);
	endSet.addAnimation(clipAnim);
	endSet.initialize(startBounds.width(), startBounds.height(), parentBounds.width(),
	parentBounds.height());
	endSet.scaleCurrentDuration(mTransitionAnimationScaleSetting);

	return new Animation[]{startSet, endSet};
	}

	Animation loadOpenAnimation(@NonNull RemoteAnimationTarget target,
	@NonNull Rect wholeAnimationBounds) {
	final boolean isEnter = target.mode != MODE_CLOSING;
	final Animation animation = mTransitionAnimation.loadDefaultAnimationRes(isEnter
	? com.android.internal.R.anim.task_fragment_open_enter
	: com.android.internal.R.anim.task_fragment_open_exit);
	animation.initialize(target.localBounds.width(), target.localBounds.height(),
	wholeAnimationBounds.width(), wholeAnimationBounds.height());
	animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
	return animation;
	}

	Animation loadCloseAnimation(@NonNull RemoteAnimationTarget target,
	@NonNull Rect wholeAnimationBounds) {
	final boolean isEnter = target.mode != MODE_CLOSING;
	final Animation animation = mTransitionAnimation.loadDefaultAnimationRes(isEnter
	? com.android.internal.R.anim.task_fragment_close_enter
	: com.android.internal.R.anim.task_fragment_close_exit);
	animation.initialize(target.localBounds.width(), target.localBounds.height(),
	wholeAnimationBounds.width(), wholeAnimationBounds.height());
	animation.scaleCurrentDuration(mTransitionAnimationScaleSetting);
	return animation;
	}

	private class SettingsObserver extends ContentObserver {
	SettingsObserver(@NonNull Handler handler) {
	super(handler);
	}

	@Override
	public void onChange(boolean selfChange) {
	mTransitionAnimationScaleSetting = Settings.Global.getFloat(
	mContext.getContentResolver(), Settings.Global.TRANSITION_ANIMATION_SCALE,
	mTransitionAnimationScaleSetting);
	}
	}
	}