/*
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* Copyright (C) 2016 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.systemui.statusbar.notification;
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import android.graphics.drawable.Icon;
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import android.util.Pools;
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import android.view.View;
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import android.widget.ImageView;
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import com.android.systemui.Interpolators;
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import com.android.systemui.R;
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import com.android.systemui.statusbar.CrossFadeHelper;
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import com.android.systemui.statusbar.TransformableView;
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import com.android.systemui.statusbar.notification.row.HybridNotificationView;
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import com.android.systemui.statusbar.notification.stack.StackStateAnimator;
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/**
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* A transform state of a image view.
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*/
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public class ImageTransformState extends TransformState {
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public static final long ANIMATION_DURATION_LENGTH = 210;
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public static final int ICON_TAG = R.id.image_icon_tag;
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private static Pools.SimplePool<ImageTransformState> sInstancePool
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= new Pools.SimplePool<>(40);
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private Icon mIcon;
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@Override
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public void initFrom(View view, TransformInfo transformInfo) {
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super.initFrom(view, transformInfo);
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if (view instanceof ImageView) {
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mIcon = (Icon) view.getTag(ICON_TAG);
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}
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}
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@Override
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protected boolean sameAs(TransformState otherState) {
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if (super.sameAs(otherState)) {
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return true;
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}
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if (otherState instanceof ImageTransformState) {
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return mIcon != null && mIcon.sameAs(((ImageTransformState) otherState).getIcon());
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}
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return false;
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}
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@Override
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public void appear(float transformationAmount, TransformableView otherView) {
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if (otherView instanceof HybridNotificationView) {
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if (transformationAmount == 0.0f) {
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mTransformedView.setPivotY(0);
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mTransformedView.setPivotX(mTransformedView.getWidth() / 2);
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prepareFadeIn();
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}
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transformationAmount = mapToDuration(transformationAmount);
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CrossFadeHelper.fadeIn(mTransformedView, transformationAmount, false /* remap */);
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transformationAmount = Interpolators.LINEAR_OUT_SLOW_IN.getInterpolation(
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transformationAmount);
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mTransformedView.setScaleX(transformationAmount);
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mTransformedView.setScaleY(transformationAmount);
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} else {
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super.appear(transformationAmount, otherView);
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}
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}
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@Override
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public void disappear(float transformationAmount, TransformableView otherView) {
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if (otherView instanceof HybridNotificationView) {
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if (transformationAmount == 0.0f) {
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mTransformedView.setPivotY(0);
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mTransformedView.setPivotX(mTransformedView.getWidth() / 2);
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}
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transformationAmount = mapToDuration(1.0f - transformationAmount);
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CrossFadeHelper.fadeOut(mTransformedView, 1.0f - transformationAmount,
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false /* remap */);
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transformationAmount = Interpolators.LINEAR_OUT_SLOW_IN.getInterpolation(
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transformationAmount);
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mTransformedView.setScaleX(transformationAmount);
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mTransformedView.setScaleY(transformationAmount);
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} else {
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super.disappear(transformationAmount, otherView);
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}
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}
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private static float mapToDuration(float scaleAmount) {
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// Assuming a linear interpolator, we can easily map it to our new duration
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scaleAmount = (scaleAmount * StackStateAnimator.ANIMATION_DURATION_STANDARD
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- (StackStateAnimator.ANIMATION_DURATION_STANDARD - ANIMATION_DURATION_LENGTH))
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/ ANIMATION_DURATION_LENGTH;
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return Math.max(Math.min(scaleAmount, 1.0f), 0.0f);
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}
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public Icon getIcon() {
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return mIcon;
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}
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public static ImageTransformState obtain() {
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ImageTransformState instance = sInstancePool.acquire();
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if (instance != null) {
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return instance;
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}
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return new ImageTransformState();
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}
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@Override
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protected boolean transformScale(TransformState otherState) {
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return sameAs(otherState);
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}
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@Override
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public void recycle() {
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super.recycle();
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if (getClass() == ImageTransformState.class) {
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sInstancePool.release(this);
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}
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}
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@Override
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protected void reset() {
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super.reset();
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mIcon = null;
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}
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}
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