1 /* 2 * Copyright (C) 2016 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.test.uibench; 17 18 import android.content.Context; 19 import android.graphics.drawable.Drawable; 20 import android.os.Bundle; 21 import androidx.annotation.Nullable; 22 import androidx.appcompat.app.AppCompatActivity; 23 import android.view.GestureDetector; 24 import android.view.LayoutInflater; 25 import android.view.MotionEvent; 26 import android.view.View; 27 import android.view.ViewConfiguration; 28 import android.widget.LinearLayout; 29 import android.widget.Scroller; 30 import android.widget.TextView; 31 32 import java.util.ArrayList; 33 34 public class NotificationShadeActivity extends AppCompatActivity { 35 36 private static class FakeNotificationStackView extends LinearLayout { 37 private static final int INITIAL_ELEVATION = 40; 38 39 private LayoutInflater mLayoutInflater; 40 private GestureDetector mGestureDetector; 41 private Scroller mScroller; 42 private ArrayList<View> mChildren = new ArrayList<>(); 43 private int mChildrenCount = 0; 44 private int mFullHeight = 0; 45 private int mScaledTouchSlop; 46 47 private Runnable mUpdateAction = new Runnable() { 48 @Override 49 public void run() { 50 if (mScroller.computeScrollOffset()) { 51 updateState(mScroller.getCurrY()); 52 postOnAnimation(this); 53 } 54 } 55 }; 56 57 private GestureDetector.OnGestureListener mGestureListener = 58 new GestureDetector.SimpleOnGestureListener() { 59 @Override 60 public boolean onDown(MotionEvent motionEvent) { 61 return true; 62 } 63 64 @Override 65 public boolean onFling(MotionEvent e1, MotionEvent e2, float vX, float vY) { 66 if (Math.abs(e1.getY() - e2.getY()) <= mScaledTouchSlop) { 67 return false; 68 } 69 mScroller.fling(0, mFullHeight, 0, (int) vY, 0, 0, 0, getHeight()); 70 postOnAnimation(mUpdateAction); 71 return true; 72 } 73 }; 74 generateNextView()75 private void generateNextView() { 76 View view = mLayoutInflater.inflate(R.layout.notification, this, false); 77 boolean even = mChildren.size() % 2 == 0; 78 Context context = getContext(); 79 ((TextView) view.findViewById(R.id.title)).setText(even ? 80 "Very important notification" : "Next video to watch"); 81 ((TextView) view.findViewById(R.id.line2)).setText(even ? 82 "Wifi nearby" : "Amazing cats"); 83 TextView infoView = (TextView) view.findViewById(R.id.info); 84 Drawable drawable = context.getDrawable(even ? R.drawable.ic_menu_manage 85 : R.drawable.ic_menu_slideshow); 86 int size = context.getResources().getDimensionPixelSize(R.dimen.notification_icon_size); 87 drawable.setBounds(0, 0, size, size); 88 infoView.setCompoundDrawables(drawable, null, null, null); 89 infoView.setText(even ? "Android System" : "Youtube"); 90 mChildren.add(view); 91 } 92 FakeNotificationStackView(Context context)93 public FakeNotificationStackView(Context context) { 94 super(context); 95 setOrientation(LinearLayout.VERTICAL); 96 mLayoutInflater = LayoutInflater.from(getContext()); 97 mGestureDetector = new GestureDetector(getContext(), mGestureListener); 98 mScaledTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); 99 mScroller = new Scroller(getContext()); 100 } 101 lastChildHeight()102 private int lastChildHeight() { 103 return (int) mChildren.get(mChildrenCount - 1).getTag(); 104 } 105 updateState(int expectedHeight)106 private void updateState(int expectedHeight) { 107 if (expectedHeight == 0 && mChildrenCount == 0) { 108 return; 109 } 110 for (View v: mChildren) { 111 v.setTranslationY(0); 112 v.setElevation(INITIAL_ELEVATION); 113 } 114 if (mChildrenCount != 0 && expectedHeight < mFullHeight - lastChildHeight()) { 115 while (mChildrenCount > 0){ 116 if (expectedHeight > mFullHeight - lastChildHeight()) { 117 break; 118 } 119 mFullHeight -= lastChildHeight(); 120 removeView(mChildren.get(mChildrenCount - 1)); 121 mChildrenCount--; 122 } 123 } else if (expectedHeight > mFullHeight) { 124 while (expectedHeight > mFullHeight) { 125 if (mChildrenCount == mChildren.size()) { 126 generateNextView(); 127 } 128 mChildrenCount++; 129 View child = mChildren.get(mChildrenCount - 1); 130 child.setElevation(INITIAL_ELEVATION); 131 int widthSpec = MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST); 132 int heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 133 child.measure(widthSpec, heightSpec); 134 addView(child); 135 int measuredHeight = child.getMeasuredHeight(); 136 child.setTag(measuredHeight); 137 mFullHeight += measuredHeight; 138 } 139 } 140 if (mChildrenCount == 0) { 141 return; 142 } 143 View lastChild = mChildren.get(mChildrenCount - 1); 144 int translationY = expectedHeight - mFullHeight; 145 lastChild.setTranslationY(translationY); 146 float p = - ((float) translationY) / lastChildHeight(); 147 lastChild.setElevation((1 - p) * INITIAL_ELEVATION); 148 } 149 150 @Override onTouchEvent(MotionEvent ev)151 public boolean onTouchEvent(MotionEvent ev) { 152 return mGestureDetector.onTouchEvent(ev); 153 } 154 } 155 156 @Override onCreate(@ullable Bundle savedInstanceState)157 protected void onCreate(@Nullable Bundle savedInstanceState) { 158 super.onCreate(savedInstanceState); 159 setContentView(new FakeNotificationStackView(this)); 160 } 161 } 162