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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.statusbar.notification;
     18 
     19 import android.animation.Animator;
     20 import android.animation.AnimatorListenerAdapter;
     21 import android.animation.ValueAnimator;
     22 import android.graphics.ColorMatrix;
     23 import android.graphics.ColorMatrixColorFilter;
     24 import android.view.View;
     25 import android.widget.ImageView;
     26 
     27 import com.android.systemui.Interpolators;
     28 import com.android.systemui.R;
     29 import com.android.systemui.statusbar.phone.NotificationPanelView;
     30 
     31 import java.util.function.Consumer;
     32 
     33 public class NotificationDozeHelper {
     34     private static final int DOZE_ANIMATOR_TAG = R.id.doze_intensity_tag;
     35     private final ColorMatrix mGrayscaleColorMatrix = new ColorMatrix();
     36 
     37     public void fadeGrayscale(final ImageView target, final boolean dark, long delay) {
     38         startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
     39             @Override
     40             public void onAnimationUpdate(ValueAnimator animation) {
     41                 updateGrayscale(target, (float) animation.getAnimatedValue());
     42             }
     43         }, dark, delay, new AnimatorListenerAdapter() {
     44             @Override
     45             public void onAnimationEnd(Animator animation) {
     46                 if (!dark) {
     47                     target.setColorFilter(null);
     48                 }
     49             }
     50         });
     51     }
     52 
     53     public void updateGrayscale(ImageView target, boolean dark) {
     54         updateGrayscale(target, dark ? 1 : 0);
     55     }
     56 
     57     public void updateGrayscale(ImageView target, float darkAmount) {
     58         if (darkAmount > 0) {
     59             updateGrayscaleMatrix(darkAmount);
     60             target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
     61         } else {
     62             target.setColorFilter(null);
     63         }
     64     }
     65 
     66     public void startIntensityAnimation(ValueAnimator.AnimatorUpdateListener updateListener,
     67             boolean dark, long delay, Animator.AnimatorListener listener) {
     68         float startIntensity = dark ? 0f : 1f;
     69         float endIntensity = dark ? 1f : 0f;
     70         ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
     71         animator.addUpdateListener(updateListener);
     72         animator.setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
     73         animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
     74         animator.setStartDelay(delay);
     75         if (listener != null) {
     76             animator.addListener(listener);
     77         }
     78         animator.start();
     79     }
     80 
     81     public void setIntensityDark(Consumer<Float> listener, boolean dark,
     82             boolean animate, long delay, View view) {
     83         if (animate) {
     84             startIntensityAnimation(a -> listener.accept((Float) a.getAnimatedValue()), dark, delay,
     85                     new AnimatorListenerAdapter() {
     86 
     87                         @Override
     88                         public void onAnimationEnd(Animator animation) {
     89                             view.setTag(DOZE_ANIMATOR_TAG, null);
     90                         }
     91 
     92                         @Override
     93                         public void onAnimationStart(Animator animation) {
     94                             view.setTag(DOZE_ANIMATOR_TAG, animation);
     95                         }
     96                     } /* listener */);
     97         } else {
     98             Animator animator = (Animator) view.getTag(DOZE_ANIMATOR_TAG);
     99             if (animator != null) {
    100                 animator.cancel();
    101             }
    102             listener.accept(dark ? 1f : 0f);
    103         }
    104     }
    105 
    106     public void updateGrayscaleMatrix(float intensity) {
    107         mGrayscaleColorMatrix.setSaturation(1 - intensity);
    108     }
    109 
    110     public ColorMatrix getGrayscaleColorMatrix() {
    111         return mGrayscaleColorMatrix;
    112     }
    113 }
    114