1 /*
2  * Copyright (C) 2008 Google Inc.
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.packageinstaller;
18 
19 import android.content.Context;
20 import android.content.res.TypedArray;
21 import android.text.Layout;
22 import android.util.AttributeSet;
23 import android.util.TypedValue;
24 import android.widget.TextView;
25 
26 import com.android.packageinstaller.R;
27 /**
28  * Used by dialogs to change the font size and number of lines to try to fit
29  * the text to the available space.
30  */
31 public class DialogTitle extends TextView {
32 
DialogTitle(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)33     public DialogTitle(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
34         super(context, attrs, defStyleAttr, defStyleRes);
35     }
36 
DialogTitle(Context context, AttributeSet attrs, int defStyleAttr)37     public DialogTitle(Context context, AttributeSet attrs, int defStyleAttr) {
38         super(context, attrs, defStyleAttr);
39     }
40 
DialogTitle(Context context, AttributeSet attrs)41     public DialogTitle(Context context, AttributeSet attrs) {
42         super(context, attrs);
43     }
44 
DialogTitle(Context context)45     public DialogTitle(Context context) {
46         super(context);
47     }
48 
49     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)50     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
51         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
52 
53         final Layout layout = getLayout();
54         if (layout != null) {
55             final int lineCount = layout.getLineCount();
56             if (lineCount > 0) {
57                 final int ellipsisCount = layout.getEllipsisCount(lineCount - 1);
58                 if (ellipsisCount > 0) {
59                     setSingleLine(false);
60                     setMaxLines(2);
61 
62                     final TypedArray a = getContext().obtainStyledAttributes(null,
63                             R.styleable.TextAppearance, android.R.attr.textAppearanceMedium,
64                             android.R.style.TextAppearance_Medium);
65                     final int textSize = a.getDimensionPixelSize(
66                             R.styleable.TextAppearance_textSize, 0);
67                     if (textSize != 0) {
68                         // textSize is already expressed in pixels
69                         setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
70                     }
71                     a.recycle();
72 
73                     super.onMeasure(widthMeasureSpec, heightMeasureSpec);
74                 }
75             }
76         }
77     }
78 }
79