1 /* 2 * Copyright (C) 2011 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.camera.ui; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.View; 22 import android.view.ViewGroup; 23 24 // A layout designed to make the children same size as the first child. 25 public class StackLayout extends ViewGroup { 26 private static final String TAG = "StackLayout"; 27 StackLayout(Context context, AttributeSet attrs)28 public StackLayout(Context context, AttributeSet attrs) { 29 super(context, attrs); 30 } 31 32 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)33 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 34 final int count = getChildCount(); 35 36 // Measure only the first child. 37 final View child = getChildAt(0); 38 measureChild(child, widthMeasureSpec, heightMeasureSpec); 39 40 // Ignore the paddings. 41 int width = child.getMeasuredWidth(); 42 int height = child.getMeasuredHeight(); 43 44 setMeasuredDimension(resolveSize(width, widthMeasureSpec), 45 resolveSize(height, heightMeasureSpec)); 46 } 47 48 @Override onLayout(boolean changed, int l, int t, int r, int b)49 protected void onLayout(boolean changed, int l, int t, int r, int b) { 50 final int count = super.getChildCount(); 51 52 for (int i = 0; i < count; i++) { 53 final View child = getChildAt(i); 54 if (child.getVisibility() != View.GONE) { 55 child.layout(0, 0, r - l, b - t); 56 } 57 } 58 } 59 } 60