1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package android.support.v17.leanback.widget; 15 16 import android.content.Context; 17 import android.util.AttributeSet; 18 import android.view.View; 19 import android.widget.FrameLayout; 20 21 /** 22 * Customized FrameLayout excludes margin of child from calculating the child size. 23 * So we can change left margin of rows while keep the width of rows unchanged without 24 * using hardcoded DIPS. 25 * @hide 26 */ 27 public class BrowseRowsFrameLayout extends FrameLayout { 28 BrowseRowsFrameLayout(Context context)29 public BrowseRowsFrameLayout(Context context) { 30 this(context ,null); 31 } 32 BrowseRowsFrameLayout(Context context, AttributeSet attrs)33 public BrowseRowsFrameLayout(Context context, AttributeSet attrs) { 34 this(context, attrs, 0); 35 } 36 BrowseRowsFrameLayout(Context context, AttributeSet attrs, int defStyle)37 public BrowseRowsFrameLayout(Context context, AttributeSet attrs, 38 int defStyle) { 39 super(context, attrs, defStyle); 40 } 41 42 @Override measureChildWithMargins(View child, int parentWidthMeasureSpec, int widthUsed, int parentHeightMeasureSpec, int heightUsed)43 protected void measureChildWithMargins(View child, 44 int parentWidthMeasureSpec, int widthUsed, 45 int parentHeightMeasureSpec, int heightUsed) { 46 final MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams(); 47 final int childWidthMeasureSpec = getChildMeasureSpec(parentWidthMeasureSpec, 48 getPaddingLeft() + getPaddingRight() + widthUsed, lp.width); 49 final int childHeightMeasureSpec = getChildMeasureSpec(parentHeightMeasureSpec, 50 getPaddingTop() + getPaddingBottom() + heightUsed, lp.height); 51 child.measure(childWidthMeasureSpec, childHeightMeasureSpec); 52 } 53 54 } 55