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; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.widget.FrameLayout; 22 23 /** 24 * A container that frames a timer circle of some sort. The circle is allowed to grow naturally 25 * according to its layout constraints up to the {@link R.dimen#max_timer_circle_size largest} 26 * allowable size. 27 */ 28 public class TimerCircleFrameLayout extends FrameLayout { 29 30 public TimerCircleFrameLayout(Context context) { 31 super(context); 32 } 33 34 public TimerCircleFrameLayout(Context context, AttributeSet attrs) { 35 super(context, attrs); 36 } 37 38 public TimerCircleFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) { 39 super(context, attrs, defStyleAttr); 40 } 41 42 /** 43 * Note: this method assumes the parent container will specify {@link MeasureSpec#EXACTLY exact} 44 * width and height values. 45 * 46 * @param widthMeasureSpec horizontal space requirements as imposed by the parent 47 * @param heightMeasureSpec vertical space requirements as imposed by the parent 48 */ 49 @Override 50 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 51 final int paddingLeft = getPaddingLeft(); 52 final int paddingRight = getPaddingRight(); 53 54 final int paddingTop = getPaddingTop(); 55 final int paddingBottom = getPaddingBottom(); 56 57 // Fetch the exact sizes imposed by the parent container. 58 final int width = MeasureSpec.getSize(widthMeasureSpec) - paddingLeft - paddingRight; 59 final int height = MeasureSpec.getSize(heightMeasureSpec) - paddingTop - paddingBottom; 60 final int smallestDimension = Math.min(width, height); 61 62 // Fetch the absolute maximum circle size allowed. 63 final int maxSize = getResources().getDimensionPixelSize(R.dimen.max_timer_circle_size); 64 final int size = Math.min(smallestDimension, maxSize); 65 66 // Set the size of this container. 67 widthMeasureSpec = MeasureSpec.makeMeasureSpec(size + paddingLeft + paddingRight, 68 MeasureSpec.EXACTLY); 69 heightMeasureSpec = MeasureSpec.makeMeasureSpec(size + paddingTop + paddingBottom, 70 MeasureSpec.EXACTLY); 71 72 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 73 } 74 } 75
