1 /* 2 * Copyright 2022 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.quickstep.views; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.util.FloatProperty; 22 import android.view.ViewGroup; 23 import android.widget.FrameLayout; 24 25 import androidx.annotation.Nullable; 26 import androidx.appcompat.widget.AppCompatTextView; 27 28 import com.android.launcher3.R; 29 import com.android.launcher3.statemanager.StatefulActivity; 30 31 /** 32 * A rounded rectangular component containing a single TextView. 33 * Appears when a split is in progress, and tells the user to select a second app to initiate 34 * splitscreen. 35 * 36 * Appears and disappears concurrently with a FloatingTaskView. 37 */ 38 public class SplitInstructionsView extends FrameLayout { 39 private final StatefulActivity mLauncher; 40 private AppCompatTextView mTextView; 41 42 public static final FloatProperty<SplitInstructionsView> UNFOLD = 43 new FloatProperty<SplitInstructionsView>("SplitInstructionsUnfold") { 44 @Override 45 public void setValue(SplitInstructionsView splitInstructionsView, float v) { 46 splitInstructionsView.setScaleY(v); 47 } 48 49 @Override 50 public Float get(SplitInstructionsView splitInstructionsView) { 51 return splitInstructionsView.getScaleY(); 52 } 53 }; 54 SplitInstructionsView(Context context)55 public SplitInstructionsView(Context context) { 56 this(context, null); 57 } 58 SplitInstructionsView(Context context, @Nullable AttributeSet attrs)59 public SplitInstructionsView(Context context, @Nullable AttributeSet attrs) { 60 this(context, attrs, 0); 61 } 62 SplitInstructionsView(Context context, AttributeSet attrs, int defStyleAttr)63 public SplitInstructionsView(Context context, AttributeSet attrs, int defStyleAttr) { 64 super(context, attrs, defStyleAttr); 65 mLauncher = (StatefulActivity) context; 66 } 67 getSplitInstructionsView(StatefulActivity launcher)68 static SplitInstructionsView getSplitInstructionsView(StatefulActivity launcher) { 69 ViewGroup dragLayer = launcher.getDragLayer(); 70 final SplitInstructionsView splitInstructionsView = 71 (SplitInstructionsView) launcher.getLayoutInflater().inflate( 72 R.layout.split_instructions_view, 73 dragLayer, 74 false 75 ); 76 77 splitInstructionsView.mTextView = splitInstructionsView.findViewById( 78 R.id.split_instructions_text); 79 80 // Since textview overlays base view, and we sometimes manipulate the alpha of each 81 // simultaneously, force overlapping rendering to false prevents redrawing of pixels, 82 // improving performance at the cost of some accuracy. 83 splitInstructionsView.forceHasOverlappingRendering(false); 84 85 dragLayer.addView(splitInstructionsView); 86 return splitInstructionsView; 87 } 88 89 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)90 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 91 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 92 ensureProperRotation(); 93 } 94 ensureProperRotation()95 void ensureProperRotation() { 96 ((RecentsView) mLauncher.getOverviewPanel()).getPagedOrientationHandler() 97 .setSplitInstructionsParams( 98 this, 99 mLauncher.getDeviceProfile(), 100 getMeasuredHeight(), 101 getMeasuredWidth() 102 ); 103 } 104 getTextView()105 public AppCompatTextView getTextView() { 106 return mTextView; 107 } 108 } 109