329 lines
13 KiB
Java
329 lines
13 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.transition;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.AnimatorSet;
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import android.animation.ObjectAnimator;
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import android.animation.TimeInterpolator;
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import android.animation.TypeEvaluator;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Rect;
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import android.transition.TransitionValues;
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import android.transition.Visibility;
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import android.util.AttributeSet;
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import android.util.Property;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.animation.AnimationUtils;
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import com.android.internal.R;
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/**
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* EpicenterTranslateClipReveal captures the clip bounds and translation values
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* before and after the scene change and animates between those and the
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* epicenter bounds during a visibility transition.
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*/
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public class EpicenterTranslateClipReveal extends Visibility {
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private static final String PROPNAME_CLIP = "android:epicenterReveal:clip";
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private static final String PROPNAME_BOUNDS = "android:epicenterReveal:bounds";
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private static final String PROPNAME_TRANSLATE_X = "android:epicenterReveal:translateX";
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private static final String PROPNAME_TRANSLATE_Y = "android:epicenterReveal:translateY";
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private static final String PROPNAME_TRANSLATE_Z = "android:epicenterReveal:translateZ";
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private static final String PROPNAME_Z = "android:epicenterReveal:z";
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private final TimeInterpolator mInterpolatorX;
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private final TimeInterpolator mInterpolatorY;
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private final TimeInterpolator mInterpolatorZ;
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public EpicenterTranslateClipReveal() {
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mInterpolatorX = null;
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mInterpolatorY = null;
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mInterpolatorZ = null;
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}
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public EpicenterTranslateClipReveal(Context context, AttributeSet attrs) {
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super(context, attrs);
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final TypedArray a = context.obtainStyledAttributes(attrs,
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R.styleable.EpicenterTranslateClipReveal, 0, 0);
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final int interpolatorX = a.getResourceId(
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R.styleable.EpicenterTranslateClipReveal_interpolatorX, 0);
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if (interpolatorX != 0) {
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mInterpolatorX = AnimationUtils.loadInterpolator(context, interpolatorX);
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} else {
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mInterpolatorX = TransitionConstants.LINEAR_OUT_SLOW_IN;
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}
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final int interpolatorY = a.getResourceId(
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R.styleable.EpicenterTranslateClipReveal_interpolatorY, 0);
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if (interpolatorY != 0) {
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mInterpolatorY = AnimationUtils.loadInterpolator(context, interpolatorY);
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} else {
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mInterpolatorY = TransitionConstants.FAST_OUT_SLOW_IN;
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}
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final int interpolatorZ = a.getResourceId(
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R.styleable.EpicenterTranslateClipReveal_interpolatorZ, 0);
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if (interpolatorZ != 0) {
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mInterpolatorZ = AnimationUtils.loadInterpolator(context, interpolatorZ);
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} else {
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mInterpolatorZ = TransitionConstants.FAST_OUT_SLOW_IN;
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}
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a.recycle();
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}
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@Override
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public void captureStartValues(TransitionValues transitionValues) {
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super.captureStartValues(transitionValues);
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captureValues(transitionValues);
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}
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@Override
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public void captureEndValues(TransitionValues transitionValues) {
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super.captureEndValues(transitionValues);
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captureValues(transitionValues);
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}
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private void captureValues(TransitionValues values) {
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final View view = values.view;
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if (view.getVisibility() == View.GONE) {
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return;
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}
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final Rect bounds = new Rect(0, 0, view.getWidth(), view.getHeight());
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values.values.put(PROPNAME_BOUNDS, bounds);
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values.values.put(PROPNAME_TRANSLATE_X, view.getTranslationX());
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values.values.put(PROPNAME_TRANSLATE_Y, view.getTranslationY());
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values.values.put(PROPNAME_TRANSLATE_Z, view.getTranslationZ());
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values.values.put(PROPNAME_Z, view.getZ());
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final Rect clip = view.getClipBounds();
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values.values.put(PROPNAME_CLIP, clip);
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}
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@Override
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public Animator onAppear(ViewGroup sceneRoot, View view,
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TransitionValues startValues, TransitionValues endValues) {
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if (endValues == null) {
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return null;
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}
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final Rect endBounds = (Rect) endValues.values.get(PROPNAME_BOUNDS);
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final Rect startBounds = getEpicenterOrCenter(endBounds);
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final float startX = startBounds.centerX() - endBounds.centerX();
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final float startY = startBounds.centerY() - endBounds.centerY();
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final float startZ = 0 - (float) endValues.values.get(PROPNAME_Z);
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// Translate the view to be centered on the epicenter.
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view.setTranslationX(startX);
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view.setTranslationY(startY);
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view.setTranslationZ(startZ);
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final float endX = (float) endValues.values.get(PROPNAME_TRANSLATE_X);
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final float endY = (float) endValues.values.get(PROPNAME_TRANSLATE_Y);
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final float endZ = (float) endValues.values.get(PROPNAME_TRANSLATE_Z);
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final Rect endClip = getBestRect(endValues);
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final Rect startClip = getEpicenterOrCenter(endClip);
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// Prepare the view.
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view.setClipBounds(startClip);
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final State startStateX = new State(startClip.left, startClip.right, startX);
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final State endStateX = new State(endClip.left, endClip.right, endX);
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final State startStateY = new State(startClip.top, startClip.bottom, startY);
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final State endStateY = new State(endClip.top, endClip.bottom, endY);
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return createRectAnimator(view, startStateX, startStateY, startZ, endStateX, endStateY,
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endZ, endValues, mInterpolatorX, mInterpolatorY, mInterpolatorZ);
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}
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@Override
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public Animator onDisappear(ViewGroup sceneRoot, View view,
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TransitionValues startValues, TransitionValues endValues) {
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if (startValues == null) {
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return null;
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}
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final Rect startBounds = (Rect) endValues.values.get(PROPNAME_BOUNDS);
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final Rect endBounds = getEpicenterOrCenter(startBounds);
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final float endX = endBounds.centerX() - startBounds.centerX();
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final float endY = endBounds.centerY() - startBounds.centerY();
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final float endZ = 0 - (float) startValues.values.get(PROPNAME_Z);
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final float startX = (float) endValues.values.get(PROPNAME_TRANSLATE_X);
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final float startY = (float) endValues.values.get(PROPNAME_TRANSLATE_Y);
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final float startZ = (float) endValues.values.get(PROPNAME_TRANSLATE_Z);
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final Rect startClip = getBestRect(startValues);
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final Rect endClip = getEpicenterOrCenter(startClip);
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// Prepare the view.
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view.setClipBounds(startClip);
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final State startStateX = new State(startClip.left, startClip.right, startX);
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final State endStateX = new State(endClip.left, endClip.right, endX);
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final State startStateY = new State(startClip.top, startClip.bottom, startY);
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final State endStateY = new State(endClip.top, endClip.bottom, endY);
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return createRectAnimator(view, startStateX, startStateY, startZ, endStateX, endStateY,
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endZ, endValues, mInterpolatorX, mInterpolatorY, mInterpolatorZ);
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}
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private Rect getEpicenterOrCenter(Rect bestRect) {
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final Rect epicenter = getEpicenter();
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if (epicenter != null) {
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return epicenter;
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}
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final int centerX = bestRect.centerX();
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final int centerY = bestRect.centerY();
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return new Rect(centerX, centerY, centerX, centerY);
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}
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private Rect getBestRect(TransitionValues values) {
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final Rect clipRect = (Rect) values.values.get(PROPNAME_CLIP);
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if (clipRect == null) {
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return (Rect) values.values.get(PROPNAME_BOUNDS);
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}
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return clipRect;
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}
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private static Animator createRectAnimator(final View view, State startX, State startY,
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float startZ, State endX, State endY, float endZ, TransitionValues endValues,
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TimeInterpolator interpolatorX, TimeInterpolator interpolatorY,
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TimeInterpolator interpolatorZ) {
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final StateEvaluator evaluator = new StateEvaluator();
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final ObjectAnimator animZ = ObjectAnimator.ofFloat(view, View.TRANSLATION_Z, startZ, endZ);
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if (interpolatorZ != null) {
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animZ.setInterpolator(interpolatorZ);
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}
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final StateProperty propX = new StateProperty(StateProperty.TARGET_X);
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final ObjectAnimator animX = ObjectAnimator.ofObject(view, propX, evaluator, startX, endX);
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if (interpolatorX != null) {
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animX.setInterpolator(interpolatorX);
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}
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final StateProperty propY = new StateProperty(StateProperty.TARGET_Y);
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final ObjectAnimator animY = ObjectAnimator.ofObject(view, propY, evaluator, startY, endY);
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if (interpolatorY != null) {
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animY.setInterpolator(interpolatorY);
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}
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final Rect terminalClip = (Rect) endValues.values.get(PROPNAME_CLIP);
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final AnimatorListenerAdapter animatorListener = new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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view.setClipBounds(terminalClip);
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}
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};
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final AnimatorSet animSet = new AnimatorSet();
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animSet.playTogether(animX, animY, animZ);
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animSet.addListener(animatorListener);
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return animSet;
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}
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private static class State {
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int lower;
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int upper;
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float trans;
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public State() {}
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public State(int lower, int upper, float trans) {
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this.lower = lower;
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this.upper = upper;
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this.trans = trans;
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}
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}
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private static class StateEvaluator implements TypeEvaluator<State> {
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private final State mTemp = new State();
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@Override
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public State evaluate(float fraction, State startValue, State endValue) {
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mTemp.upper = startValue.upper + (int) ((endValue.upper - startValue.upper) * fraction);
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mTemp.lower = startValue.lower + (int) ((endValue.lower - startValue.lower) * fraction);
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mTemp.trans = startValue.trans + (int) ((endValue.trans - startValue.trans) * fraction);
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return mTemp;
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}
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}
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private static class StateProperty extends Property<View, State> {
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public static final char TARGET_X = 'x';
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public static final char TARGET_Y = 'y';
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private final Rect mTempRect = new Rect();
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private final State mTempState = new State();
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private final int mTargetDimension;
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public StateProperty(char targetDimension) {
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super(State.class, "state_" + targetDimension);
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mTargetDimension = targetDimension;
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}
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@Override
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public State get(View object) {
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final Rect tempRect = mTempRect;
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if (!object.getClipBounds(tempRect)) {
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tempRect.setEmpty();
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}
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final State tempState = mTempState;
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if (mTargetDimension == TARGET_X) {
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tempState.trans = object.getTranslationX();
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tempState.lower = tempRect.left + (int) tempState.trans;
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tempState.upper = tempRect.right + (int) tempState.trans;
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} else {
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tempState.trans = object.getTranslationY();
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tempState.lower = tempRect.top + (int) tempState.trans;
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tempState.upper = tempRect.bottom + (int) tempState.trans;
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}
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return tempState;
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}
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@Override
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public void set(View object, State value) {
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final Rect tempRect = mTempRect;
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if (object.getClipBounds(tempRect)) {
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if (mTargetDimension == TARGET_X) {
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tempRect.left = value.lower - (int) value.trans;
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tempRect.right = value.upper - (int) value.trans;
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} else {
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tempRect.top = value.lower - (int) value.trans;
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tempRect.bottom = value.upper - (int) value.trans;
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}
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object.setClipBounds(tempRect);
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}
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if (mTargetDimension == TARGET_X) {
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object.setTranslationX(value.trans);
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} else {
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object.setTranslationY(value.trans);
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}
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}
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}
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}
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