LinearLayout.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.widget; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.Gravity; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.RemoteViews.RemoteView; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport com.android.internal.R; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A Layout that arranges its children in a single column or a single row. The direction of 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the row can be set by calling {@link #setOrientation(int) setOrientation()}. 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You can also specify gravity, which specifies the alignment of all the child elements by 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * calling {@link #setGravity(int) setGravity()} or specify that specific children 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * grow to fill up any remaining space in the layout by setting the <em>weight</em> member of 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams}. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The default orientation is horizontal. 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Also see {@link LinearLayout.LayoutParams android.widget.LinearLayout.LayoutParams} 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes </p> 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project@RemoteView 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class LinearLayout extends ViewGroup { 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int HORIZONTAL = 0; 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int VERTICAL = 1; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether the children of this layout are baseline aligned. Only applicable 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if {@link #mOrientation} is horizontal. 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mBaselineAligned = true; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this layout is part of another layout that is baseline aligned, 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * use the child at this index as the baseline. 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note: this is orthogonal to {@link #mBaselineAligned}, which is concerned 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with whether the children of this layout are baseline aligned. 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBaselineAlignedChildIndex = 0; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The additional offset to the child's baseline. 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * We'll calculate the baseline of this layout as we measure vertically; for 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * horizontal linear layouts, the offset of 0 is appropriate. 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBaselineChildTop = 0; 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mOrientation; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mGravity = Gravity.LEFT | Gravity.TOP; 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTotalLength; 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mWeightSum; 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxAscent; 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxDescent; 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int VERTICAL_GRAVITY_COUNT = 4; 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_CENTER_VERTICAL = 0; 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_TOP = 1; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_BOTTOM = 2; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_FILL = 3; 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context) { 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context, AttributeSet attrs) { 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs); 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout); 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = a.getInt(com.android.internal.R.styleable.LinearLayout_orientation, -1); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = a.getInt(com.android.internal.R.styleable.LinearLayout_gravity, -1); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setGravity(index); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean baselineAligned = a.getBoolean(R.styleable.LinearLayout_baselineAligned, true); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!baselineAligned) { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setBaselineAligned(baselineAligned); 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = a.getFloat(R.styleable.LinearLayout_weightSum, -1.0f); 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1); 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the child at the specified index 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.EXACTLY && lp.height == 0 && lp.weight > 0) { 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += lp.topMargin + lp.bottomMargin; 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = Integer.MIN_VALUE; 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.height == 0 && lp.weight > 0) { 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // heightMode is either UNSPECIFIED OR AT_MOST, and this child 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wanted to stretch to fill available space. Translate that to 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // WRAP_CONTENT so that it does not end up with a height of 0 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldHeight = 0; 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = LayoutParams.WRAP_CONTENT; 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to. If this or 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildBeforeLayout( 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child, i, widthMeasureSpec, 0, heightMeasureSpec, 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0); 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldHeight != Integer.MIN_VALUE) { 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += child.getMeasuredHeight() + lp.topMargin + 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.bottomMargin + getNextLocationOffset(child); 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.FILL_PARENT) { 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project allFillParent = allFillParent && lp.width == LayoutParams.FILL_PARENT; 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = resolveSize(heightSize, heightMeasureSpec); 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = heightSize - mTotalLength; 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingLeft + mPaddingRight + 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.leftMargin + lp.rightMargin, lp.width); 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.height != 0) || (heightMode != MeasureSpec.EXACTLY)) { 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above... 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // base new measurement on stored values 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + share; 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childHeight < 0) { 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = 0; 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Measure for this first time here 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(share > 0 ? share : 0, 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY)); 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width == LayoutParams.FILL_PARENT; 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project allFillParent = allFillParent && lp.width == LayoutParams.FILL_PARENT; 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += child.getMeasuredHeight() + lp.topMargin + 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.bottomMargin + getNextLocationOffset(child); 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setMeasuredDimension(resolveSize(maxWidth, widthMeasureSpec), heightSize); 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.width == LayoutParams.FILL_PARENT) { 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.EXACTLY && lp.width == 0 && lp.weight > 0) { 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += lp.leftMargin + lp.rightMargin; 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // baseline offset (in particular for TextViews). 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The following defeats the optimization mentioned above. 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Allow the child to use as much space as it wants because we 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // can shrink things later (and re-measure). 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int freeSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(freeSpec, freeSpec); 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = Integer.MIN_VALUE; 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.width == 0 && lp.weight > 0) { 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // widthMode is either UNSPECIFIED OR AT_MOST, and this child 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wanted to stretch to fill available space. Translate that to 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // WRAP_CONTENT so that it does not end up with a width of 0 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldWidth = 0; 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildBeforeLayout(child, i, widthMeasureSpec, 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0, 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldWidth != Integer.MIN_VALUE) { 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += child.getMeasuredWidth() + lp.leftMargin + 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.rightMargin + getNextLocationOffset(child); 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.FILL_PARENT) { 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project allFillParent = allFillParent && lp.height == LayoutParams.FILL_PARENT; 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = resolveSize(widthSize, widthMeasureSpec); 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = widthSize - mTotalLength; 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeightMeasureSpec = getChildMeasureSpec( 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.width != 0) || (widthMode != MeasureSpec.EXACTLY)) { 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above ... base new measurement 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // on stored values 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = child.getMeasuredWidth() + share; 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childWidth < 0) { 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = 0; 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure( 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. Measure for this first time here 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(MeasureSpec.makeMeasureSpec( 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project share > 0 ? share : 0, MeasureSpec.EXACTLY), 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += child.getMeasuredWidth() + lp.leftMargin + 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.rightMargin + getNextLocationOffset(child); 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height == LayoutParams.FILL_PARENT; 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project allFillParent = allFillParent && lp.height == LayoutParams.FILL_PARENT; 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setMeasuredDimension(widthSize, resolveSize(maxHeight, heightMeasureSpec)); 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to accomodate the heightMesureSpec from the parent 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.height == LayoutParams.FILL_PARENT) { 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the size offset of the next sibling of the specified child. 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutVertical(); 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutHorizontal(); 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 9299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutVertical() { 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mPaddingTop; 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childLeft = paddingLeft; 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = mRight - mLeft; 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.HORIZONTAL_GRAVITY_MASK; 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mTotalLength contains the padding already, we add the top 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // padding to compensate 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop + mPaddingTop - mTotalLength; 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop) - mTotalLength) / 2; 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += measureNullChild(i); 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.LEFT: 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + lp.leftMargin; 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutHorizontal() { 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = paddingTop; 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childLeft = mPaddingLeft; 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = mBottom - mTop; 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.HORIZONTAL_GRAVITY_MASK; 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.LEFT) { 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mTotalLength contains the padding already, we add the left 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // padding to compensate 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = mRight - mLeft + mPaddingLeft - mTotalLength; 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += ((mRight - mLeft) - mTotalLength) / 2; 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += measureNullChild(i); 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned && lp.height != LayoutParams.FILL_PARENT) { 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Removed support for baselign alignment when layout_gravity or 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param orientation Pass HORIZONTAL or VERTICAL. Default 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * value is HORIZONTAL. 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOrientation(int orientation) { 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) { 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.LEFT; 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = horizontalGravity & Gravity.HORIZONTAL_GRAVITY_MASK; 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != gravity) { 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.HORIZONTAL_GRAVITY_MASK) | gravity; 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.ViewGroup.LayoutParams#FILL_PARENT} 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(p); 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty(mapping = { 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width the width, either {@link #FILL_PARENT}, 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height the height, either {@link #FILL_PARENT}, 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(MarginLayoutParams source) { 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1319