1 /*
2  * Copyright (C) 2020 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.deskclock.widget
18 
19 import android.content.Context
20 import android.util.AttributeSet
21 import androidx.appcompat.widget.AppCompatTextView
22 
23 /**
24  * A TextView which automatically re-sizes its text to fit within its boundaries.
25  */
26 class AutoSizingTextView @JvmOverloads constructor(
27     context: Context,
28     attrs: AttributeSet? = null,
29     defStyleAttr: Int = android.R.attr.textViewStyle
30 ) : AppCompatTextView(context, attrs, defStyleAttr) {
31     private val mTextSizeHelper: TextSizeHelper? = TextSizeHelper(this)
32 
onMeasurenull33     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
34         mTextSizeHelper!!.onMeasure(widthMeasureSpec, heightMeasureSpec)
35         super.onMeasure(widthMeasureSpec, heightMeasureSpec)
36     }
37 
onTextChangednull38     override fun onTextChanged(
39         text: CharSequence?,
40         start: Int,
41         lengthBefore: Int,
42         lengthAfter: Int
43     ) {
44         super.onTextChanged(text, start, lengthBefore, lengthAfter)
45         if (mTextSizeHelper != null) {
46             mTextSizeHelper.onTextChanged(lengthBefore, lengthAfter)
47         } else {
48             requestLayout()
49         }
50     }
51 
requestLayoutnull52     override fun requestLayout() {
53         if (mTextSizeHelper == null || !mTextSizeHelper.shouldIgnoreRequestLayout()) {
54             super.requestLayout()
55         }
56     }
57 }