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 17 package com.android.internal.widget; 18 19 import android.annotation.Nullable; 20 import android.content.Context; 21 import android.graphics.Rect; 22 import android.util.AttributeSet; 23 import android.view.View; 24 import android.view.accessibility.AccessibilityNodeInfo; 25 import android.widget.Button; 26 import android.widget.ImageView; 27 import android.widget.RemoteViews; 28 29 /** 30 * An expand button in a notification 31 */ 32 @RemoteViews.RemoteView 33 public class NotificationExpandButton extends ImageView { 34 private View mLabeledBy; 35 NotificationExpandButton(Context context)36 public NotificationExpandButton(Context context) { 37 super(context); 38 } 39 NotificationExpandButton(Context context, @Nullable AttributeSet attrs)40 public NotificationExpandButton(Context context, @Nullable AttributeSet attrs) { 41 super(context, attrs); 42 } 43 NotificationExpandButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr)44 public NotificationExpandButton(Context context, @Nullable AttributeSet attrs, 45 int defStyleAttr) { 46 super(context, attrs, defStyleAttr); 47 } 48 NotificationExpandButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes)49 public NotificationExpandButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr, 50 int defStyleRes) { 51 super(context, attrs, defStyleAttr, defStyleRes); 52 } 53 54 @Override getBoundsOnScreen(Rect outRect, boolean clipToParent)55 public void getBoundsOnScreen(Rect outRect, boolean clipToParent) { 56 super.getBoundsOnScreen(outRect, clipToParent); 57 extendRectToMinTouchSize(outRect); 58 } 59 extendRectToMinTouchSize(Rect rect)60 private void extendRectToMinTouchSize(Rect rect) { 61 int touchTargetSize = (int) (getResources().getDisplayMetrics().density * 48); 62 rect.left = rect.centerX() - touchTargetSize / 2; 63 rect.right = rect.left + touchTargetSize; 64 rect.top = rect.centerY() - touchTargetSize / 2; 65 rect.bottom = rect.top + touchTargetSize; 66 } 67 68 @Override onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)69 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 70 super.onInitializeAccessibilityNodeInfo(info); 71 info.setClassName(Button.class.getName()); 72 if (mLabeledBy != null) { 73 info.setLabeledBy(mLabeledBy); 74 } 75 } 76 setLabeledBy(View labeledBy)77 public void setLabeledBy(View labeledBy) { 78 mLabeledBy = labeledBy; 79 } 80 } 81