1/* 2 * Copyright (C) 2015 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 17package android.support.v7.widget; 18 19import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; 20 21import android.content.Context; 22import android.content.res.TypedArray; 23import android.support.annotation.RestrictTo; 24import android.support.v7.appcompat.R; 25import android.text.Layout; 26import android.util.AttributeSet; 27import android.util.TypedValue; 28import android.widget.TextView; 29 30/** 31 * Used by dialogs to change the font size and number of lines to try to fit 32 * the text to the available space. 33 * 34 * @hide 35 */ 36@RestrictTo(LIBRARY_GROUP) 37public class DialogTitle extends TextView { 38 39 public DialogTitle(Context context, AttributeSet attrs, int defStyleAttr) { 40 super(context, attrs, defStyleAttr); 41 } 42 43 public DialogTitle(Context context, AttributeSet attrs) { 44 super(context, attrs); 45 } 46 47 public DialogTitle(Context context) { 48 super(context); 49 } 50 51 @Override 52 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 53 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 54 55 final Layout layout = getLayout(); 56 if (layout != null) { 57 final int lineCount = layout.getLineCount(); 58 if (lineCount > 0) { 59 final int ellipsisCount = layout.getEllipsisCount(lineCount - 1); 60 if (ellipsisCount > 0) { 61 setSingleLine(false); 62 setMaxLines(2); 63 64 final TypedArray a = getContext().obtainStyledAttributes(null, 65 R.styleable.TextAppearance, 66 android.R.attr.textAppearanceMedium, 67 android.R.style.TextAppearance_Medium); 68 final int textSize = a.getDimensionPixelSize( 69 R.styleable.TextAppearance_android_textSize, 0); 70 if (textSize != 0) { 71 // textSize is already expressed in pixels 72 setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize); 73 } 74 a.recycle(); 75 76 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 77 } 78 } 79 } 80 } 81}