1 /* 2 * Copyright (C) 2018 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 package com.android.quickstep.util; 17 18 import android.animation.Animator; 19 import android.animation.AnimatorListenerAdapter; 20 import android.animation.ValueAnimator; 21 import android.graphics.Canvas; 22 import android.graphics.ColorFilter; 23 import android.graphics.PixelFormat; 24 import android.graphics.drawable.Drawable; 25 import android.util.FloatProperty; 26 import android.view.View; 27 28 import com.android.launcher3.Utilities; 29 import com.android.quickstep.views.RecentsView; 30 import com.android.quickstep.views.TaskThumbnailView; 31 import com.android.quickstep.views.TaskView; 32 33 public class TaskViewDrawable extends Drawable { 34 35 public static final FloatProperty<TaskViewDrawable> PROGRESS = 36 new FloatProperty<TaskViewDrawable>("progress") { 37 @Override 38 public void setValue(TaskViewDrawable taskViewDrawable, float v) { 39 taskViewDrawable.setProgress(v); 40 } 41 42 @Override 43 public Float get(TaskViewDrawable taskViewDrawable) { 44 return taskViewDrawable.mProgress; 45 } 46 }; 47 48 /** 49 * The progress at which we play the atomic icon scale animation. 50 */ 51 private static final float ICON_SCALE_THRESHOLD = 0.95f; 52 53 private final RecentsView mParent; 54 private final View mIconView; 55 private final int[] mIconPos; 56 57 private final TaskThumbnailView mThumbnailView; 58 59 private final ClipAnimationHelper mClipAnimationHelper; 60 61 private float mProgress = 1; 62 private boolean mPassedIconScaleThreshold; 63 private ValueAnimator mIconScaleAnimator; 64 private float mIconScale; 65 TaskViewDrawable(TaskView tv, RecentsView parent)66 public TaskViewDrawable(TaskView tv, RecentsView parent) { 67 mParent = parent; 68 mIconView = tv.getIconView(); 69 mIconPos = new int[2]; 70 mIconScale = mIconView.getScaleX(); 71 Utilities.getDescendantCoordRelativeToAncestor(mIconView, parent, mIconPos, true); 72 73 mThumbnailView = tv.getThumbnail(); 74 mClipAnimationHelper = new ClipAnimationHelper(); 75 mClipAnimationHelper.fromTaskThumbnailView(mThumbnailView, parent); 76 } 77 setProgress(float progress)78 public void setProgress(float progress) { 79 mProgress = progress; 80 mParent.invalidate(); 81 boolean passedIconScaleThreshold = progress <= ICON_SCALE_THRESHOLD; 82 if (mPassedIconScaleThreshold != passedIconScaleThreshold) { 83 mPassedIconScaleThreshold = passedIconScaleThreshold; 84 animateIconScale(mPassedIconScaleThreshold ? 0 : 1); 85 } 86 } 87 animateIconScale(float toScale)88 private void animateIconScale(float toScale) { 89 if (mIconScaleAnimator != null) { 90 mIconScaleAnimator.cancel(); 91 } 92 mIconScaleAnimator = ValueAnimator.ofFloat(mIconScale, toScale); 93 mIconScaleAnimator.addUpdateListener(valueAnimator -> { 94 mIconScale = (float) valueAnimator.getAnimatedValue(); 95 if (mProgress > ICON_SCALE_THRESHOLD) { 96 // Speed up the icon scale to ensure it is 1 when progress is 1. 97 float iconProgress = (mProgress - ICON_SCALE_THRESHOLD) / (1 - ICON_SCALE_THRESHOLD); 98 if (iconProgress > mIconScale) { 99 mIconScale = iconProgress; 100 } 101 } 102 invalidateSelf(); 103 }); 104 mIconScaleAnimator.addListener(new AnimatorListenerAdapter() { 105 @Override 106 public void onAnimationEnd(Animator animation) { 107 mIconScaleAnimator = null; 108 } 109 }); 110 mIconScaleAnimator.setDuration(TaskView.SCALE_ICON_DURATION); 111 mIconScaleAnimator.start(); 112 } 113 114 @Override draw(Canvas canvas)115 public void draw(Canvas canvas) { 116 canvas.save(); 117 canvas.translate(mParent.getScrollX(), mParent.getScrollY()); 118 mClipAnimationHelper.drawForProgress(mThumbnailView, canvas, mProgress); 119 canvas.restore(); 120 121 canvas.save(); 122 canvas.translate(mIconPos[0], mIconPos[1]); 123 canvas.scale(mIconScale, mIconScale, mIconView.getWidth() / 2, mIconView.getHeight() / 2); 124 mIconView.draw(canvas); 125 canvas.restore(); 126 } 127 getClipAnimationHelper()128 public ClipAnimationHelper getClipAnimationHelper() { 129 return mClipAnimationHelper; 130 } 131 132 @Override setAlpha(int i)133 public void setAlpha(int i) { } 134 135 @Override setColorFilter(ColorFilter colorFilter)136 public void setColorFilter(ColorFilter colorFilter) { } 137 138 @Override getOpacity()139 public int getOpacity() { 140 return PixelFormat.TRANSLUCENT; 141 } 142 } 143