| /* |
| * Copyright (C) 2014 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 android.app; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.ObjectAnimator; |
| import android.app.SharedElementCallback.OnSharedElementsReadyListener; |
| import android.content.Intent; |
| import android.graphics.Color; |
| import android.graphics.Matrix; |
| import android.graphics.RectF; |
| import android.graphics.drawable.ColorDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.os.Build.VERSION_CODES; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.ResultReceiver; |
| import android.transition.Transition; |
| import android.transition.TransitionListenerAdapter; |
| import android.transition.TransitionManager; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.Window; |
| |
| import com.android.internal.view.OneShotPreDrawListener; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * This ActivityTransitionCoordinator is created in ActivityOptions#makeSceneTransitionAnimation |
| * to govern the exit of the Scene and the shared elements when calling an Activity as well as |
| * the reentry of the Scene when coming back from the called Activity. |
| */ |
| class ExitTransitionCoordinator extends ActivityTransitionCoordinator { |
| private static final String TAG = "ExitTransitionCoordinator"; |
| private static final long MAX_WAIT_MS = 1000; |
| |
| private Bundle mSharedElementBundle; |
| private boolean mExitNotified; |
| private boolean mSharedElementNotified; |
| private Activity mActivity; |
| private boolean mIsBackgroundReady; |
| private boolean mIsCanceled; |
| private Handler mHandler; |
| private ObjectAnimator mBackgroundAnimator; |
| private boolean mIsHidden; |
| private Bundle mExitSharedElementBundle; |
| private boolean mIsExitStarted; |
| private boolean mSharedElementsHidden; |
| private HideSharedElementsCallback mHideSharedElementsCallback; |
| |
| public ExitTransitionCoordinator(Activity activity, Window window, |
| SharedElementCallback listener, ArrayList<String> names, |
| ArrayList<String> accepted, ArrayList<View> mapped, boolean isReturning) { |
| super(window, names, listener, isReturning); |
| viewsReady(mapSharedElements(accepted, mapped)); |
| stripOffscreenViews(); |
| mIsBackgroundReady = !isReturning; |
| mActivity = activity; |
| } |
| |
| void setHideSharedElementsCallback(HideSharedElementsCallback callback) { |
| mHideSharedElementsCallback = callback; |
| } |
| |
| @Override |
| protected void onReceiveResult(int resultCode, Bundle resultData) { |
| switch (resultCode) { |
| case MSG_SET_REMOTE_RECEIVER: |
| stopCancel(); |
| mResultReceiver = resultData.getParcelable(KEY_REMOTE_RECEIVER); |
| if (mIsCanceled) { |
| mResultReceiver.send(MSG_CANCEL, null); |
| mResultReceiver = null; |
| } else { |
| notifyComplete(); |
| } |
| break; |
| case MSG_HIDE_SHARED_ELEMENTS: |
| stopCancel(); |
| if (!mIsCanceled) { |
| hideSharedElements(); |
| } |
| break; |
| case MSG_START_EXIT_TRANSITION: |
| mHandler.removeMessages(MSG_CANCEL); |
| startExit(); |
| break; |
| case MSG_SHARED_ELEMENT_DESTINATION: |
| mExitSharedElementBundle = resultData; |
| sharedElementExitBack(); |
| break; |
| case MSG_CANCEL: |
| mIsCanceled = true; |
| finish(); |
| break; |
| } |
| } |
| |
| private void stopCancel() { |
| if (mHandler != null) { |
| mHandler.removeMessages(MSG_CANCEL); |
| } |
| } |
| |
| private void delayCancel() { |
| if (mHandler != null) { |
| mHandler.sendEmptyMessageDelayed(MSG_CANCEL, MAX_WAIT_MS); |
| } |
| } |
| |
| public void resetViews() { |
| ViewGroup decorView = getDecor(); |
| if (decorView != null) { |
| TransitionManager.endTransitions(decorView); |
| } |
| if (mTransitioningViews != null) { |
| showViews(mTransitioningViews, true); |
| setTransitioningViewsVisiblity(View.VISIBLE, true); |
| } |
| showViews(mSharedElements, true); |
| mIsHidden = true; |
| if (!mIsReturning && decorView != null) { |
| decorView.suppressLayout(false); |
| } |
| moveSharedElementsFromOverlay(); |
| clearState(); |
| } |
| |
| private void sharedElementExitBack() { |
| final ViewGroup decorView = getDecor(); |
| if (decorView != null) { |
| decorView.suppressLayout(true); |
| } |
| if (decorView != null && mExitSharedElementBundle != null && |
| !mExitSharedElementBundle.isEmpty() && |
| !mSharedElements.isEmpty() && getSharedElementTransition() != null) { |
| startTransition(new Runnable() { |
| public void run() { |
| startSharedElementExit(decorView); |
| } |
| }); |
| } else { |
| sharedElementTransitionComplete(); |
| } |
| } |
| |
| private void startSharedElementExit(final ViewGroup decorView) { |
| Transition transition = getSharedElementExitTransition(); |
| transition.addListener(new TransitionListenerAdapter() { |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| transition.removeListener(this); |
| if (isViewsTransitionComplete()) { |
| delayCancel(); |
| } |
| } |
| }); |
| final ArrayList<View> sharedElementSnapshots = createSnapshots(mExitSharedElementBundle, |
| mSharedElementNames); |
| OneShotPreDrawListener.add(decorView, () -> { |
| setSharedElementState(mExitSharedElementBundle, sharedElementSnapshots); |
| }); |
| setGhostVisibility(View.INVISIBLE); |
| scheduleGhostVisibilityChange(View.INVISIBLE); |
| if (mListener != null) { |
| mListener.onSharedElementEnd(mSharedElementNames, mSharedElements, |
| sharedElementSnapshots); |
| } |
| TransitionManager.beginDelayedTransition(decorView, transition); |
| scheduleGhostVisibilityChange(View.VISIBLE); |
| setGhostVisibility(View.VISIBLE); |
| decorView.invalidate(); |
| } |
| |
| private void hideSharedElements() { |
| moveSharedElementsFromOverlay(); |
| if (mHideSharedElementsCallback != null) { |
| mHideSharedElementsCallback.hideSharedElements(); |
| } |
| if (!mIsHidden) { |
| hideViews(mSharedElements); |
| } |
| mSharedElementsHidden = true; |
| finishIfNecessary(); |
| } |
| |
| public void startExit() { |
| if (!mIsExitStarted) { |
| backgroundAnimatorComplete(); |
| mIsExitStarted = true; |
| pauseInput(); |
| ViewGroup decorView = getDecor(); |
| if (decorView != null) { |
| decorView.suppressLayout(true); |
| } |
| moveSharedElementsToOverlay(); |
| startTransition(new Runnable() { |
| @Override |
| public void run() { |
| if (mActivity != null) { |
| beginTransitions(); |
| } else { |
| startExitTransition(); |
| } |
| } |
| }); |
| } |
| } |
| |
| public void startExit(int resultCode, Intent data) { |
| if (!mIsExitStarted) { |
| mIsExitStarted = true; |
| pauseInput(); |
| ViewGroup decorView = getDecor(); |
| if (decorView != null) { |
| decorView.suppressLayout(true); |
| } |
| mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| mIsCanceled = true; |
| finish(); |
| } |
| }; |
| delayCancel(); |
| moveSharedElementsToOverlay(); |
| if (decorView != null && decorView.getBackground() == null) { |
| getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); |
| } |
| final boolean targetsM = decorView == null || decorView.getContext() |
| .getApplicationInfo().targetSdkVersion >= VERSION_CODES.M; |
| ArrayList<String> sharedElementNames = targetsM ? mSharedElementNames : |
| mAllSharedElementNames; |
| ActivityOptions options = ActivityOptions.makeSceneTransitionAnimation(mActivity, this, |
| sharedElementNames, resultCode, data); |
| mActivity.convertToTranslucent(new Activity.TranslucentConversionListener() { |
| @Override |
| public void onTranslucentConversionComplete(boolean drawComplete) { |
| if (!mIsCanceled) { |
| fadeOutBackground(); |
| } |
| } |
| }, options); |
| startTransition(new Runnable() { |
| @Override |
| public void run() { |
| startExitTransition(); |
| } |
| }); |
| } |
| } |
| |
| public void stop() { |
| if (mIsReturning && mActivity != null) { |
| // Override the previous ActivityOptions. We don't want the |
| // activity to have options since we're essentially canceling the |
| // transition and finishing right now. |
| mActivity.convertToTranslucent(null, null); |
| finish(); |
| } |
| } |
| |
| private void startExitTransition() { |
| Transition transition = getExitTransition(); |
| ViewGroup decorView = getDecor(); |
| if (transition != null && decorView != null && mTransitioningViews != null) { |
| setTransitioningViewsVisiblity(View.VISIBLE, false); |
| TransitionManager.beginDelayedTransition(decorView, transition); |
| setTransitioningViewsVisiblity(View.INVISIBLE, false); |
| decorView.invalidate(); |
| } else { |
| transitionStarted(); |
| } |
| } |
| |
| private void fadeOutBackground() { |
| if (mBackgroundAnimator == null) { |
| ViewGroup decor = getDecor(); |
| Drawable background; |
| if (decor != null && (background = decor.getBackground()) != null) { |
| background = background.mutate(); |
| getWindow().setBackgroundDrawable(background); |
| mBackgroundAnimator = ObjectAnimator.ofInt(background, "alpha", 0); |
| mBackgroundAnimator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mBackgroundAnimator = null; |
| if (!mIsCanceled) { |
| mIsBackgroundReady = true; |
| notifyComplete(); |
| } |
| backgroundAnimatorComplete(); |
| } |
| }); |
| mBackgroundAnimator.setDuration(getFadeDuration()); |
| mBackgroundAnimator.start(); |
| } else { |
| backgroundAnimatorComplete(); |
| mIsBackgroundReady = true; |
| } |
| } |
| } |
| |
| private Transition getExitTransition() { |
| Transition viewsTransition = null; |
| if (mTransitioningViews != null && !mTransitioningViews.isEmpty()) { |
| viewsTransition = configureTransition(getViewsTransition(), true); |
| } |
| if (viewsTransition == null) { |
| viewsTransitionComplete(); |
| } else { |
| final ArrayList<View> transitioningViews = mTransitioningViews; |
| viewsTransition.addListener(new ContinueTransitionListener() { |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| viewsTransitionComplete(); |
| if (mIsHidden && transitioningViews != null) { |
| showViews(transitioningViews, true); |
| setTransitioningViewsVisiblity(View.VISIBLE, true); |
| } |
| if (mSharedElementBundle != null) { |
| delayCancel(); |
| } |
| super.onTransitionEnd(transition); |
| } |
| }); |
| } |
| return viewsTransition; |
| } |
| |
| private Transition getSharedElementExitTransition() { |
| Transition sharedElementTransition = null; |
| if (!mSharedElements.isEmpty()) { |
| sharedElementTransition = configureTransition(getSharedElementTransition(), false); |
| } |
| if (sharedElementTransition == null) { |
| sharedElementTransitionComplete(); |
| } else { |
| sharedElementTransition.addListener(new ContinueTransitionListener() { |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| sharedElementTransitionComplete(); |
| if (mIsHidden) { |
| showViews(mSharedElements, true); |
| } |
| super.onTransitionEnd(transition); |
| } |
| }); |
| mSharedElements.get(0).invalidate(); |
| } |
| return sharedElementTransition; |
| } |
| |
| private void beginTransitions() { |
| Transition sharedElementTransition = getSharedElementExitTransition(); |
| Transition viewsTransition = getExitTransition(); |
| |
| Transition transition = mergeTransitions(sharedElementTransition, viewsTransition); |
| ViewGroup decorView = getDecor(); |
| if (transition != null && decorView != null) { |
| setGhostVisibility(View.INVISIBLE); |
| scheduleGhostVisibilityChange(View.INVISIBLE); |
| if (viewsTransition != null) { |
| setTransitioningViewsVisiblity(View.VISIBLE, false); |
| } |
| TransitionManager.beginDelayedTransition(decorView, transition); |
| scheduleGhostVisibilityChange(View.VISIBLE); |
| setGhostVisibility(View.VISIBLE); |
| if (viewsTransition != null) { |
| setTransitioningViewsVisiblity(View.INVISIBLE, false); |
| } |
| decorView.invalidate(); |
| } else { |
| transitionStarted(); |
| } |
| } |
| |
| protected boolean isReadyToNotify() { |
| return mSharedElementBundle != null && mResultReceiver != null && mIsBackgroundReady; |
| } |
| |
| @Override |
| protected void sharedElementTransitionComplete() { |
| mSharedElementBundle = mExitSharedElementBundle == null |
| ? captureSharedElementState() : captureExitSharedElementsState(); |
| super.sharedElementTransitionComplete(); |
| } |
| |
| private Bundle captureExitSharedElementsState() { |
| Bundle bundle = new Bundle(); |
| RectF bounds = new RectF(); |
| Matrix matrix = new Matrix(); |
| for (int i = 0; i < mSharedElements.size(); i++) { |
| String name = mSharedElementNames.get(i); |
| Bundle sharedElementState = mExitSharedElementBundle.getBundle(name); |
| if (sharedElementState != null) { |
| bundle.putBundle(name, sharedElementState); |
| } else { |
| View view = mSharedElements.get(i); |
| captureSharedElementState(view, name, bundle, matrix, bounds); |
| } |
| } |
| return bundle; |
| } |
| |
| @Override |
| protected void onTransitionsComplete() { |
| notifyComplete(); |
| } |
| |
| protected void notifyComplete() { |
| if (isReadyToNotify()) { |
| if (!mSharedElementNotified) { |
| mSharedElementNotified = true; |
| delayCancel(); |
| if (mListener == null) { |
| mResultReceiver.send(MSG_TAKE_SHARED_ELEMENTS, mSharedElementBundle); |
| notifyExitComplete(); |
| } else { |
| final ResultReceiver resultReceiver = mResultReceiver; |
| final Bundle sharedElementBundle = mSharedElementBundle; |
| mListener.onSharedElementsArrived(mSharedElementNames, mSharedElements, |
| new OnSharedElementsReadyListener() { |
| @Override |
| public void onSharedElementsReady() { |
| resultReceiver.send(MSG_TAKE_SHARED_ELEMENTS, |
| sharedElementBundle); |
| notifyExitComplete(); |
| } |
| }); |
| } |
| } else { |
| notifyExitComplete(); |
| } |
| } |
| } |
| |
| private void notifyExitComplete() { |
| if (!mExitNotified && isViewsTransitionComplete()) { |
| mExitNotified = true; |
| mResultReceiver.send(MSG_EXIT_TRANSITION_COMPLETE, null); |
| mResultReceiver = null; // done talking |
| ViewGroup decorView = getDecor(); |
| if (!mIsReturning && decorView != null) { |
| decorView.suppressLayout(false); |
| } |
| finishIfNecessary(); |
| } |
| } |
| |
| private void finishIfNecessary() { |
| if (mIsReturning && mExitNotified && mActivity != null && (mSharedElements.isEmpty() || |
| mSharedElementsHidden)) { |
| finish(); |
| } |
| if (!mIsReturning && mExitNotified) { |
| mActivity = null; // don't need it anymore |
| } |
| } |
| |
| private void finish() { |
| stopCancel(); |
| if (mActivity != null) { |
| mActivity.mActivityTransitionState.clear(); |
| mActivity.finish(); |
| mActivity.overridePendingTransition(0, 0); |
| mActivity = null; |
| } |
| // Clear the state so that we can't hold any references accidentally and leak memory. |
| clearState(); |
| } |
| |
| @Override |
| protected void clearState() { |
| mHandler = null; |
| mSharedElementBundle = null; |
| if (mBackgroundAnimator != null) { |
| mBackgroundAnimator.cancel(); |
| mBackgroundAnimator = null; |
| } |
| mExitSharedElementBundle = null; |
| super.clearState(); |
| } |
| |
| @Override |
| protected boolean moveSharedElementWithParent() { |
| return !mIsReturning; |
| } |
| |
| @Override |
| protected Transition getViewsTransition() { |
| if (mIsReturning) { |
| return getWindow().getReturnTransition(); |
| } else { |
| return getWindow().getExitTransition(); |
| } |
| } |
| |
| protected Transition getSharedElementTransition() { |
| if (mIsReturning) { |
| return getWindow().getSharedElementReturnTransition(); |
| } else { |
| return getWindow().getSharedElementExitTransition(); |
| } |
| } |
| |
| interface HideSharedElementsCallback { |
| void hideSharedElements(); |
| } |
| } |