| /* |
| * Copyright (C) 2015 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 com.android.internal.transition; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.animation.RectEvaluator; |
| import android.animation.TimeInterpolator; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Rect; |
| import android.transition.TransitionValues; |
| import android.transition.Visibility; |
| import android.util.AttributeSet; |
| import android.util.Property; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.PathInterpolator; |
| |
| import com.android.internal.R; |
| |
| /** |
| * EpicenterClipReveal captures the {@link View#getClipBounds()} before and |
| * after the scene change and animates between those and the epicenter bounds |
| * during a visibility transition. |
| */ |
| public class EpicenterClipReveal extends Visibility { |
| private static final String PROPNAME_CLIP = "android:epicenterReveal:clip"; |
| private static final String PROPNAME_BOUNDS = "android:epicenterReveal:bounds"; |
| |
| private final TimeInterpolator mInterpolatorX; |
| private final TimeInterpolator mInterpolatorY; |
| private final boolean mCenterClipBounds; |
| |
| public EpicenterClipReveal() { |
| mInterpolatorX = null; |
| mInterpolatorY = null; |
| mCenterClipBounds = false; |
| } |
| |
| public EpicenterClipReveal(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| final TypedArray a = context.obtainStyledAttributes(attrs, |
| R.styleable.EpicenterClipReveal, 0, 0); |
| |
| mCenterClipBounds = a.getBoolean(R.styleable.EpicenterClipReveal_centerClipBounds, false); |
| |
| final int interpolatorX = a.getResourceId(R.styleable.EpicenterClipReveal_interpolatorX, 0); |
| if (interpolatorX != 0) { |
| mInterpolatorX = AnimationUtils.loadInterpolator(context, interpolatorX); |
| } else { |
| mInterpolatorX = TransitionConstants.LINEAR_OUT_SLOW_IN; |
| } |
| |
| final int interpolatorY = a.getResourceId(R.styleable.EpicenterClipReveal_interpolatorY, 0); |
| if (interpolatorY != 0) { |
| mInterpolatorY = AnimationUtils.loadInterpolator(context, interpolatorY); |
| } else { |
| mInterpolatorY = TransitionConstants.FAST_OUT_SLOW_IN; |
| } |
| |
| a.recycle(); |
| } |
| |
| @Override |
| public void captureStartValues(TransitionValues transitionValues) { |
| super.captureStartValues(transitionValues); |
| captureValues(transitionValues); |
| } |
| |
| @Override |
| public void captureEndValues(TransitionValues transitionValues) { |
| super.captureEndValues(transitionValues); |
| captureValues(transitionValues); |
| } |
| |
| private void captureValues(TransitionValues values) { |
| final View view = values.view; |
| if (view.getVisibility() == View.GONE) { |
| return; |
| } |
| |
| final Rect clip = view.getClipBounds(); |
| values.values.put(PROPNAME_CLIP, clip); |
| |
| if (clip == null) { |
| final Rect bounds = new Rect(0, 0, view.getWidth(), view.getHeight()); |
| values.values.put(PROPNAME_BOUNDS, bounds); |
| } |
| } |
| |
| @Override |
| public Animator onAppear(ViewGroup sceneRoot, View view, |
| TransitionValues startValues, TransitionValues endValues) { |
| if (endValues == null) { |
| return null; |
| } |
| |
| final Rect end = getBestRect(endValues); |
| final Rect start = getEpicenterOrCenter(end); |
| |
| // Prepare the view. |
| view.setClipBounds(start); |
| |
| return createRectAnimator(view, start, end, endValues, mInterpolatorX, mInterpolatorY); |
| } |
| |
| @Override |
| public Animator onDisappear(ViewGroup sceneRoot, View view, |
| TransitionValues startValues, TransitionValues endValues) { |
| if (startValues == null) { |
| return null; |
| } |
| |
| final Rect start = getBestRect(startValues); |
| final Rect end = getEpicenterOrCenter(start); |
| |
| // Prepare the view. |
| view.setClipBounds(start); |
| |
| return createRectAnimator(view, start, end, endValues, mInterpolatorX, mInterpolatorY); |
| } |
| |
| private Rect getEpicenterOrCenter(Rect bestRect) { |
| final Rect epicenter = getEpicenter(); |
| if (epicenter != null) { |
| // Translate the clip bounds to be centered within the target bounds. |
| if (mCenterClipBounds) { |
| final int offsetX = bestRect.centerX() - epicenter.centerX(); |
| final int offsetY = bestRect.centerY() - epicenter.centerY(); |
| epicenter.offset(offsetX, offsetY); |
| } |
| return epicenter; |
| } |
| |
| final int centerX = bestRect.centerX(); |
| final int centerY = bestRect.centerY(); |
| return new Rect(centerX, centerY, centerX, centerY); |
| } |
| |
| private Rect getBestRect(TransitionValues values) { |
| final Rect clipRect = (Rect) values.values.get(PROPNAME_CLIP); |
| if (clipRect == null) { |
| return (Rect) values.values.get(PROPNAME_BOUNDS); |
| } |
| return clipRect; |
| } |
| |
| private static Animator createRectAnimator(final View view, Rect start, Rect end, |
| TransitionValues endValues, TimeInterpolator interpolatorX, |
| TimeInterpolator interpolatorY) { |
| final RectEvaluator evaluator = new RectEvaluator(new Rect()); |
| final Rect terminalClip = (Rect) endValues.values.get(PROPNAME_CLIP); |
| |
| final ClipDimenProperty propX = new ClipDimenProperty(ClipDimenProperty.TARGET_X); |
| final ObjectAnimator animX = ObjectAnimator.ofObject(view, propX, evaluator, start, end); |
| if (interpolatorX != null) { |
| animX.setInterpolator(interpolatorX); |
| } |
| |
| final ClipDimenProperty propY = new ClipDimenProperty(ClipDimenProperty.TARGET_Y); |
| final ObjectAnimator animY = ObjectAnimator.ofObject(view, propY, evaluator, start, end); |
| if (interpolatorY != null) { |
| animY.setInterpolator(interpolatorY); |
| } |
| |
| final AnimatorSet animSet = new AnimatorSet(); |
| animSet.playTogether(animX, animY); |
| animSet.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| view.setClipBounds(terminalClip); |
| } |
| }); |
| return animSet; |
| } |
| |
| private static class ClipDimenProperty extends Property<View, Rect> { |
| public static final char TARGET_X = 'x'; |
| public static final char TARGET_Y = 'y'; |
| |
| private final Rect mTempRect = new Rect(); |
| |
| private final int mTargetDimension; |
| |
| public ClipDimenProperty(char targetDimension) { |
| super(Rect.class, "clip_bounds_" + targetDimension); |
| |
| mTargetDimension = targetDimension; |
| } |
| |
| @Override |
| public Rect get(View object) { |
| final Rect tempRect = mTempRect; |
| if (!object.getClipBounds(tempRect)) { |
| tempRect.setEmpty(); |
| } |
| return tempRect; |
| } |
| |
| @Override |
| public void set(View object, Rect value) { |
| final Rect tempRect = mTempRect; |
| if (object.getClipBounds(tempRect)) { |
| if (mTargetDimension == TARGET_X) { |
| tempRect.left = value.left; |
| tempRect.right = value.right; |
| } else { |
| tempRect.top = value.top; |
| tempRect.bottom = value.bottom; |
| } |
| object.setClipBounds(tempRect); |
| } |
| } |
| } |
| } |