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