Home | History | Annotate | Download | only in widget 
      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.deskclock.widget;
     18 
     19 import android.content.Context;
     20 import android.util.AttributeSet;
     21 import android.widget.TextClock;
     22 
     23 /**
     24  *  Wrapper around TextClock that automatically re-sizes itself to fit within the given bounds.
     25  */
     26 public class AutoSizingTextClock extends TextClock {
     27 
     28     private final TextSizeHelper mTextSizeHelper;
     29     private boolean mSuppressLayout = false;
     30 
     31     public AutoSizingTextClock(Context context) {
     32         this(context, null);
     33     }
     34 
     35     public AutoSizingTextClock(Context context, AttributeSet attrs) {
     36         this(context, attrs, 0);
     37     }
     38 
     39     public AutoSizingTextClock(Context context, AttributeSet attrs, int defStyleAttr) {
     40         super(context, attrs, defStyleAttr);
     41         mTextSizeHelper = new TextSizeHelper(this);
     42     }
     43 
     44     @Override
     45     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     46         mTextSizeHelper.onMeasure(widthMeasureSpec, heightMeasureSpec);
     47         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     48     }
     49 
     50     @Override
     51     protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
     52         super.onTextChanged(text, start, lengthBefore, lengthAfter);
     53         if (mTextSizeHelper != null) {
     54             if (lengthBefore != lengthAfter) {
     55                 mSuppressLayout = false;
     56             }
     57             mTextSizeHelper.onTextChanged(lengthBefore, lengthAfter);
     58         } else {
     59             requestLayout();
     60         }
     61     }
     62 
     63     @Override
     64     public void setText(CharSequence text, BufferType type) {
     65         mSuppressLayout = true;
     66         super.setText(text, type);
     67         mSuppressLayout = false;
     68     }
     69 
     70     @Override
     71     public void requestLayout() {
     72         if (mTextSizeHelper == null || !mTextSizeHelper.shouldIgnoreRequestLayout()) {
     73             if (!mSuppressLayout) {
     74                 super.requestLayout();
     75             }
     76         }
     77     }
     78 }