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      1 /*
      2  * Copyright (C) 2012 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.internal.widget;
     18 
     19 import android.content.Context;
     20 import android.util.AttributeSet;
     21 import android.util.Log;
     22 import android.view.View;
     23 import android.widget.RelativeLayout;
     24 
     25 public class FaceUnlockView extends RelativeLayout {
     26     private static final String TAG = "FaceUnlockView";
     27 
     28     public FaceUnlockView(Context context) {
     29         this(context, null);
     30     }
     31 
     32     public FaceUnlockView(Context context, AttributeSet attrs) {
     33         super(context, attrs);
     34     }
     35 
     36     private int resolveMeasured(int measureSpec, int desired)
     37     {
     38         int result = 0;
     39         int specSize = MeasureSpec.getSize(measureSpec);
     40         switch (MeasureSpec.getMode(measureSpec)) {
     41             case MeasureSpec.UNSPECIFIED:
     42                 result = desired;
     43                 break;
     44             case MeasureSpec.AT_MOST:
     45                 result = Math.max(specSize, desired);
     46                 break;
     47             case MeasureSpec.EXACTLY:
     48             default:
     49                 result = specSize;
     50         }
     51         return result;
     52     }
     53 
     54     @Override
     55     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     56         final int minimumWidth = getSuggestedMinimumWidth();
     57         final int minimumHeight = getSuggestedMinimumHeight();
     58         int viewWidth = resolveMeasured(widthMeasureSpec, minimumWidth);
     59         int viewHeight = resolveMeasured(heightMeasureSpec, minimumHeight);
     60 
     61         final int chosenSize = Math.min(viewWidth, viewHeight);
     62         final int newWidthMeasureSpec =
     63                 MeasureSpec.makeMeasureSpec(chosenSize, MeasureSpec.AT_MOST);
     64         final int newHeightMeasureSpec =
     65                 MeasureSpec.makeMeasureSpec(chosenSize, MeasureSpec.AT_MOST);
     66 
     67         super.onMeasure(newWidthMeasureSpec, newHeightMeasureSpec);
     68     }
     69 }
     70