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      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 
     35     public NotificationExpandButton(Context context) {
     36         super(context);
     37     }
     38 
     39     public NotificationExpandButton(Context context, @Nullable AttributeSet attrs) {
     40         super(context, attrs);
     41     }
     42 
     43     public NotificationExpandButton(Context context, @Nullable AttributeSet attrs,
     44             int defStyleAttr) {
     45         super(context, attrs, defStyleAttr);
     46     }
     47 
     48     public NotificationExpandButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr,
     49             int defStyleRes) {
     50         super(context, attrs, defStyleAttr, defStyleRes);
     51     }
     52 
     53     @Override
     54     public void getBoundsOnScreen(Rect outRect, boolean clipToParent) {
     55         super.getBoundsOnScreen(outRect, clipToParent);
     56         extendRectToMinTouchSize(outRect);
     57     }
     58 
     59     private void extendRectToMinTouchSize(Rect rect) {
     60         int touchTargetSize = (int) (getResources().getDisplayMetrics().density * 48);
     61         rect.left = rect.centerX() - touchTargetSize / 2;
     62         rect.right = rect.left + touchTargetSize;
     63         rect.top = rect.centerY() - touchTargetSize / 2;
     64         rect.bottom = rect.top + touchTargetSize;
     65     }
     66 
     67     @Override
     68     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
     69         super.onInitializeAccessibilityNodeInfo(info);
     70         info.setClassName(Button.class.getName());
     71     }
     72 }
     73