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 17package com.android.internal.widget; 18 19import android.annotation.Nullable; 20import android.content.Context; 21import android.graphics.Rect; 22import android.util.AttributeSet; 23import android.widget.ImageView; 24import android.widget.RemoteViews; 25 26/** 27 * An expand button in a notification 28 */ 29@RemoteViews.RemoteView 30public class NotificationExpandButton extends ImageView { 31 public NotificationExpandButton(Context context) { 32 super(context); 33 } 34 35 public NotificationExpandButton(Context context, @Nullable AttributeSet attrs) { 36 super(context, attrs); 37 } 38 39 public NotificationExpandButton(Context context, @Nullable AttributeSet attrs, 40 int defStyleAttr) { 41 super(context, attrs, defStyleAttr); 42 } 43 44 public NotificationExpandButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr, 45 int defStyleRes) { 46 super(context, attrs, defStyleAttr, defStyleRes); 47 } 48 49 @Override 50 public void getBoundsOnScreen(Rect outRect, boolean clipToParent) { 51 super.getBoundsOnScreen(outRect, clipToParent); 52 extendRectToMinTouchSize(outRect); 53 } 54 55 private void extendRectToMinTouchSize(Rect rect) { 56 int touchTargetSize = (int) (getResources().getDisplayMetrics().density * 48); 57 rect.left = rect.centerX() - touchTargetSize / 2; 58 rect.right = rect.left + touchTargetSize; 59 rect.top = rect.centerY() - touchTargetSize / 2; 60 rect.bottom = rect.top + touchTargetSize; 61 } 62} 63