| /* |
| * 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.content.Intent; |
| import android.graphics.drawable.ColorDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.transition.Transition; |
| import android.transition.TransitionManager; |
| import android.view.View; |
| import android.view.ViewTreeObserver; |
| |
| 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 boolean mExitComplete; |
| |
| 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 boolean mExitTransitionStarted; |
| |
| private Bundle mExitSharedElementBundle; |
| |
| public ExitTransitionCoordinator(Activity activity, ArrayList<String> names, |
| ArrayList<String> accepted, ArrayList<String> mapped, boolean isReturning) { |
| super(activity.getWindow(), names, accepted, mapped, getListener(activity, isReturning), |
| isReturning); |
| mIsBackgroundReady = !isReturning; |
| mActivity = activity; |
| } |
| |
| private static SharedElementListener getListener(Activity activity, boolean isReturning) { |
| return isReturning ? activity.mEnterTransitionListener : activity.mExitTransitionListener; |
| } |
| |
| @Override |
| protected void onReceiveResult(int resultCode, Bundle resultData) { |
| switch (resultCode) { |
| case MSG_SET_REMOTE_RECEIVER: |
| mResultReceiver = resultData.getParcelable(KEY_REMOTE_RECEIVER); |
| if (mIsCanceled) { |
| mResultReceiver.send(MSG_CANCEL, null); |
| mResultReceiver = null; |
| } else { |
| if (mHandler != null) { |
| mHandler.removeMessages(MSG_CANCEL); |
| } |
| notifyComplete(); |
| } |
| break; |
| case MSG_HIDE_SHARED_ELEMENTS: |
| if (!mIsCanceled) { |
| hideSharedElements(); |
| } |
| break; |
| case MSG_START_EXIT_TRANSITION: |
| startExit(); |
| break; |
| case MSG_ACTIVITY_STOPPED: |
| setViewVisibility(mTransitioningViews, View.VISIBLE); |
| setViewVisibility(mSharedElements, View.VISIBLE); |
| mIsHidden = true; |
| break; |
| case MSG_SHARED_ELEMENT_DESTINATION: |
| mExitSharedElementBundle = resultData; |
| if (mExitTransitionStarted) { |
| startSharedElementExit(); |
| } |
| break; |
| } |
| } |
| |
| private void startSharedElementExit() { |
| if (!mSharedElements.isEmpty() && getSharedElementTransition() != null) { |
| Transition transition = getSharedElementExitTransition(); |
| TransitionManager.beginDelayedTransition(getDecor(), transition); |
| ArrayList<View> sharedElementSnapshots = createSnapshots(mExitSharedElementBundle, |
| mSharedElementNames); |
| setSharedElementState(mExitSharedElementBundle, sharedElementSnapshots); |
| } |
| } |
| |
| private void hideSharedElements() { |
| setViewVisibility(mSharedElements, View.INVISIBLE); |
| finishIfNecessary(); |
| } |
| |
| public void startExit() { |
| beginTransitions(); |
| setViewVisibility(mTransitioningViews, View.INVISIBLE); |
| } |
| |
| public void startExit(int resultCode, Intent data) { |
| mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| mIsCanceled = true; |
| mActivity.finish(); |
| mActivity = null; |
| } |
| }; |
| mHandler.sendEmptyMessageDelayed(MSG_CANCEL, MAX_WAIT_MS); |
| if (getDecor().getBackground() == null) { |
| ColorDrawable black = new ColorDrawable(0xFF000000); |
| black.setAlpha(0); |
| getWindow().setBackgroundDrawable(black); |
| black.setAlpha(255); |
| } |
| ActivityOptions options = ActivityOptions.makeSceneTransitionAnimation(mActivity, this, |
| mAllSharedElementNames, resultCode, data); |
| mActivity.convertToTranslucent(new Activity.TranslucentConversionListener() { |
| @Override |
| public void onTranslucentConversionComplete(boolean drawComplete) { |
| if (!mIsCanceled) { |
| fadeOutBackground(); |
| } |
| } |
| }, options); |
| Transition sharedElementTransition = mSharedElements.isEmpty() |
| ? null : getSharedElementTransition(); |
| if (sharedElementTransition == null) { |
| sharedElementTransitionComplete(); |
| } |
| Transition transition = mergeTransitions(sharedElementTransition, getExitTransition()); |
| if (transition == null) { |
| mExitTransitionStarted = true; |
| } else { |
| TransitionManager.beginDelayedTransition(getDecor(), transition); |
| setViewVisibility(mTransitioningViews, View.INVISIBLE); |
| getDecor().getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() { |
| @Override |
| public boolean onPreDraw() { |
| getDecor().getViewTreeObserver().removeOnPreDrawListener(this); |
| mExitTransitionStarted = true; |
| if (mExitSharedElementBundle != null) { |
| startSharedElementExit(); |
| } |
| notifyComplete(); |
| return true; |
| } |
| }); |
| } |
| } |
| |
| private void fadeOutBackground() { |
| if (mBackgroundAnimator == null) { |
| Drawable background = getDecor().getBackground(); |
| mBackgroundAnimator = ObjectAnimator.ofInt(background, "alpha", 0); |
| mBackgroundAnimator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mBackgroundAnimator = null; |
| if (!mIsCanceled) { |
| mIsBackgroundReady = true; |
| notifyComplete(); |
| } |
| } |
| }); |
| mBackgroundAnimator.setDuration(FADE_BACKGROUND_DURATION_MS); |
| mBackgroundAnimator.start(); |
| } |
| } |
| |
| private Transition getExitTransition() { |
| Transition viewsTransition = null; |
| if (!mTransitioningViews.isEmpty()) { |
| viewsTransition = configureTransition(getViewsTransition()); |
| } |
| if (viewsTransition == null) { |
| exitTransitionComplete(); |
| } else { |
| viewsTransition.addListener(new Transition.TransitionListenerAdapter() { |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| exitTransitionComplete(); |
| if (mIsHidden) { |
| setViewVisibility(mTransitioningViews, View.VISIBLE); |
| } |
| } |
| |
| @Override |
| public void onTransitionCancel(Transition transition) { |
| super.onTransitionCancel(transition); |
| } |
| }); |
| } |
| return viewsTransition; |
| } |
| |
| private Transition getSharedElementExitTransition() { |
| Transition sharedElementTransition = null; |
| if (!mSharedElements.isEmpty()) { |
| sharedElementTransition = configureTransition(getSharedElementTransition()); |
| } |
| if (sharedElementTransition == null) { |
| sharedElementTransitionComplete(); |
| } else { |
| sharedElementTransition.addListener(new Transition.TransitionListenerAdapter() { |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| sharedElementTransitionComplete(); |
| if (mIsHidden) { |
| setViewVisibility(mSharedElements, View.VISIBLE); |
| } |
| } |
| }); |
| mSharedElements.get(0).invalidate(); |
| } |
| return sharedElementTransition; |
| } |
| |
| private void beginTransitions() { |
| Transition sharedElementTransition = getSharedElementExitTransition(); |
| Transition viewsTransition = getExitTransition(); |
| |
| Transition transition = mergeTransitions(sharedElementTransition, viewsTransition); |
| mExitTransitionStarted = true; |
| if (transition != null) { |
| TransitionManager.beginDelayedTransition(getDecor(), transition); |
| } |
| } |
| |
| private void exitTransitionComplete() { |
| mExitComplete = true; |
| notifyComplete(); |
| } |
| |
| protected boolean isReadyToNotify() { |
| return mSharedElementBundle != null && mResultReceiver != null && mIsBackgroundReady |
| && mExitTransitionStarted; |
| } |
| |
| private void sharedElementTransitionComplete() { |
| mSharedElementBundle = captureSharedElementState(); |
| notifyComplete(); |
| } |
| |
| protected void notifyComplete() { |
| if (isReadyToNotify()) { |
| if (!mSharedElementNotified) { |
| mSharedElementNotified = true; |
| mResultReceiver.send(MSG_TAKE_SHARED_ELEMENTS, mSharedElementBundle); |
| } |
| if (!mExitNotified && mExitComplete) { |
| mExitNotified = true; |
| mResultReceiver.send(MSG_EXIT_TRANSITION_COMPLETE, null); |
| mResultReceiver = null; // done talking |
| finishIfNecessary(); |
| } |
| } |
| } |
| |
| private void finishIfNecessary() { |
| if (mIsReturning && mExitNotified && (mSharedElements.isEmpty() |
| || mSharedElements.get(0).getVisibility() == View.INVISIBLE)) { |
| mActivity.finish(); |
| mActivity.overridePendingTransition(0, 0); |
| mActivity = null; |
| } |
| if (!mIsReturning && mExitNotified) { |
| mActivity = null; // don't need it anymore |
| } |
| } |
| |
| @Override |
| protected Transition getViewsTransition() { |
| if (mIsReturning) { |
| return getWindow().getEnterTransition(); |
| } else { |
| return getWindow().getExitTransition(); |
| } |
| } |
| |
| protected Transition getSharedElementTransition() { |
| if (mIsReturning) { |
| return getWindow().getSharedElementEnterTransition(); |
| } else { |
| return getWindow().getSharedElementExitTransition(); |
| } |
| } |
| } |