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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.deskclock;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.FrameLayout;
/**
* A container that frames a timer circle of some sort. The circle is allowed to grow naturally
* according to its layout constraints up to the {@link R.dimen#max_timer_circle_size largest}
* allowable size.
*/
public class TimerCircleFrameLayout extends FrameLayout {
public TimerCircleFrameLayout(Context context) {
super(context);
}
public TimerCircleFrameLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public TimerCircleFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
/**
* Note: this method assumes the parent container will specify {@link MeasureSpec#EXACTLY exact}
* width and height values.
*
* @param widthMeasureSpec horizontal space requirements as imposed by the parent
* @param heightMeasureSpec vertical space requirements as imposed by the parent
*/
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final int paddingLeft = getPaddingLeft();
final int paddingRight = getPaddingRight();
final int paddingTop = getPaddingTop();
final int paddingBottom = getPaddingBottom();
// Fetch the exact sizes imposed by the parent container.
final int width = MeasureSpec.getSize(widthMeasureSpec) - paddingLeft - paddingRight;
final int height = MeasureSpec.getSize(heightMeasureSpec) - paddingTop - paddingBottom;
final int smallestDimension = Math.min(width, height);
// Fetch the absolute maximum circle size allowed.
final int maxSize = getResources().getDimensionPixelSize(R.dimen.max_timer_circle_size);
final int size = Math.min(smallestDimension, maxSize);
// Set the size of this container.
widthMeasureSpec = MeasureSpec.makeMeasureSpec(size + paddingLeft + paddingRight,
MeasureSpec.EXACTLY);
heightMeasureSpec = MeasureSpec.makeMeasureSpec(size + paddingTop + paddingBottom,
MeasureSpec.EXACTLY);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
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