LinearLayout.java revision 189ee18d6c6483ad63cc864267328259e2e00b95
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 19f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunneimport com.android.internal.R; 20f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 23fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powellimport android.graphics.Canvas; 24fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powellimport android.graphics.drawable.Drawable; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.Gravity; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.RemoteViews.RemoteView; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A Layout that arranges its children in a single column or a single row. The direction of 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the row can be set by calling {@link #setOrientation(int) setOrientation()}. 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You can also specify gravity, which specifies the alignment of all the child elements by 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * calling {@link #setGravity(int) setGravity()} or specify that specific children 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * grow to fill up any remaining space in the layout by setting the <em>weight</em> member of 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams}. 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The default orientation is horizontal. 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4241ec65355bd6ded652769725b276d47c54a0d913Scott Main * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-linearlayout.html">Linear Layout 4341ec65355bd6ded652769725b276d47c54a0d913Scott Main * tutorial</a>.</p> 4441ec65355bd6ded652769725b276d47c54a0d913Scott Main * 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Also see {@link LinearLayout.LayoutParams android.widget.LinearLayout.LayoutParams} 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes </p> 489295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 499295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAligned 509295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 519295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_gravity 529295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 539295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_orientation 549295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_weightSum 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project@RemoteView 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class LinearLayout extends ViewGroup { 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int HORIZONTAL = 0; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int VERTICAL = 1; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 62fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Don't show any dividers. 63fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 64fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_NONE = 0; 65fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 66fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the beginning of the group. 67fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 68fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_BEGINNING = 1; 69fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 70fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show dividers between each item in the group. 71fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 72fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_MIDDLE = 2; 73fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 74fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the end of the group. 75fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 76fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_END = 4; 77fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 78fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether the children of this layout are baseline aligned. Only applicable 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if {@link #mOrientation} is horizontal. 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 82bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mBaselineAligned = true; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this layout is part of another layout that is baseline aligned, 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * use the child at this index as the baseline. 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note: this is orthogonal to {@link #mBaselineAligned}, which is concerned 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with whether the children of this layout are baseline aligned. 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 92bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 93c1f9c40c23a756a11394a35f37053f796494b224Karl Rosaen private int mBaselineAlignedChildIndex = -1; 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The additional offset to the child's baseline. 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * We'll calculate the baseline of this layout as we measure vertically; for 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * horizontal linear layouts, the offset of 0 is appropriate. 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 100bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBaselineChildTop = 0; 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 103bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mOrientation; 105bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 106bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement", mapping = { 107d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = -1, to = "NONE"), 108d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 109d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 110d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 111d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 112d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 113d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 114d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 115d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 116d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 117d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 118d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 119d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn }) 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mGravity = Gravity.LEFT | Gravity.TOP; 121bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 122bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTotalLength; 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 125bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mWeightSum; 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 128bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1295b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private boolean mUseLargestChild; 1305b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxAscent; 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxDescent; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int VERTICAL_GRAVITY_COUNT = 4; 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_CENTER_VERTICAL = 0; 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_TOP = 1; 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_BOTTOM = 2; 1395b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private static final int INDEX_FILL = 3; 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 141fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private Drawable mDivider; 142fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerWidth; 143fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerHeight; 144fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mShowDividers; 145fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerPadding; 146fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context) { 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context, AttributeSet attrs) { 1529295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy this(context, attrs, 0); 1539295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 1549295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 1559295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public LinearLayout(Context context, AttributeSet attrs, int defStyle) { 1569295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy super(context, attrs, defStyle); 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = a.getInt(com.android.internal.R.styleable.LinearLayout_orientation, -1); 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = a.getInt(com.android.internal.R.styleable.LinearLayout_gravity, -1); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setGravity(index); 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean baselineAligned = a.getBoolean(R.styleable.LinearLayout_baselineAligned, true); 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!baselineAligned) { 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setBaselineAligned(baselineAligned); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = a.getFloat(R.styleable.LinearLayout_weightSum, -1.0f); 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1819295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_measureWithLargestChild, false); 1825b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 183fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setDividerDrawable(a.getDrawable(R.styleable.LinearLayout_divider)); 184fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = a.getInt(R.styleable.LinearLayout_showDividers, SHOW_DIVIDER_NONE); 185fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerPadding = a.getDimensionPixelSize(R.styleable.LinearLayout_dividerPadding, 0); 186fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 191fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set how dividers should be shown between items in this layout 192fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * 193fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING}, 194fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END}, 195fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * or {@link #SHOW_DIVIDER_NONE} to show no dividers. 196fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 197fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setShowDividers(int showDividers) { 198fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividers != mShowDividers) { 199fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 200fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 201fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = showDividers; 202fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 203fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 204fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 205fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @return A flag set indicating how dividers should be shown around items. 206fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 207fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 208fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public int getShowDividers() { 209fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return mShowDividers; 210fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 211fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 212fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 213fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set a drawable to be used as a divider between items. 214fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param divider Drawable that will divide each item. 215fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 216fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 217fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setDividerDrawable(Drawable divider) { 218fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider == mDivider) { 219fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 220fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 221fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider = divider; 222fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider != null) { 223fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = divider.getIntrinsicWidth(); 224fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = divider.getIntrinsicHeight(); 225fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 226fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = 0; 227fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = 0; 228fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 229fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setWillNotDraw(divider == null); 230fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 231fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 232fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 233fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell @Override 234fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell protected void onDraw(Canvas canvas) { 235fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mDivider == null) { 236fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 237fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 238fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 239fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mOrientation == VERTICAL) { 240fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersVertical(canvas); 241fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 242fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersHorizontal(canvas); 243fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 244fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 245fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 246fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersVertical(Canvas canvas) { 247fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerBeginning = 248fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_BEGINNING) == SHOW_DIVIDER_BEGINNING; 249fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerMiddle = 250fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_MIDDLE) == SHOW_DIVIDER_MIDDLE; 251fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerEnd = 252fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_END) == SHOW_DIVIDER_END; 253fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 254fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 255fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell int top = getPaddingTop(); 256fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell boolean firstVisible = true; 257fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 258fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 259fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 260fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (child == null) { 261fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += measureNullChild(i); 262fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (child.getVisibility() != GONE) { 263fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (firstVisible) { 264fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell firstVisible = false; 265fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerBeginning) { 266fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 267fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += mDividerHeight; 268fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 269fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (showDividerMiddle) { 270fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 271fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += mDividerHeight; 272fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 273fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 274fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell LayoutParams lp = (LayoutParams) child.getLayoutParams(); 275fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += lp.topMargin + child.getHeight() + lp.bottomMargin; 276fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 277fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 278fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 279fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerEnd) { 280fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 281fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 282fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 283fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 284fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersHorizontal(Canvas canvas) { 285fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerBeginning = 286fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_BEGINNING) == SHOW_DIVIDER_BEGINNING; 287fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerMiddle = 288fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_MIDDLE) == SHOW_DIVIDER_MIDDLE; 289fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerEnd = 290fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_END) == SHOW_DIVIDER_END; 291fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 292fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 293fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell int left = getPaddingLeft(); 294fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell boolean firstVisible = true; 295fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 296fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 297fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 298fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (child == null) { 299fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += measureNullChild(i); 300fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (child.getVisibility() != GONE) { 301fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (firstVisible) { 302fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell firstVisible = false; 303fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerBeginning) { 304fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawVerticalDivider(canvas, left); 305fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += mDividerWidth; 306fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 307fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (showDividerMiddle) { 308fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawVerticalDivider(canvas, left); 309fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += mDividerWidth; 310fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 311fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 312fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell LayoutParams lp = (LayoutParams) child.getLayoutParams(); 313fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += lp.leftMargin + child.getWidth() + lp.rightMargin; 314fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 315fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 316fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 317fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerEnd) { 318fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawVerticalDivider(canvas, left); 319fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 320fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 321fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 322fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawHorizontalDivider(Canvas canvas, int top) { 323fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(getPaddingLeft() + mDividerPadding, top, 324fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight); 325fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 326fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 327fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 328fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawVerticalDivider(Canvas canvas, int left) { 329fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(left, getPaddingTop() + mDividerPadding, 330fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding); 331fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 332fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 333fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 334fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3589295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 3599295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When true, all children with a weight will be considered having 3609295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 3619295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 3629295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 3639295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @return True to measure children with a weight using the minimum 3649295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * size of the largest child, false otherwise. 3659295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 3669295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public boolean isMeasureWithLargestChildEnabled() { 3679295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy return mUseLargestChild; 3689295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 3699295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 3709295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 3719295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When set to true, all children with a weight will be considered having 3729295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 3739295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 3749295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 3759295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * Disabled by default. 3769295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 3779295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @param enabled True to measure children with a weight using the 3789295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * minimum size of the largest child, false otherwise. 3799295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 3809295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy @android.view.RemotableViewMethod 3819295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public void setMeasureWithLargestChildEnabled(boolean enabled) { 3829295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = enabled; 3839295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 3849295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the child at the specified index 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 539189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 5535b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 5545b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 5555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildHeight = Integer.MIN_VALUE; 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 557fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell // A divider at the end will change how much space views can consume. 558fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerBeginning = 559fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_BEGINNING) == SHOW_DIVIDER_BEGINNING; 560fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerMiddle = 561fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_MIDDLE) == SHOW_DIVIDER_MIDDLE; 562fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 564fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell boolean firstVisible = true; 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 578fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (firstVisible) { 579fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell firstVisible = false; 580fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerBeginning) { 581fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 582fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 583fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (showDividerMiddle) { 584fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 585fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 586fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.EXACTLY && lp.height == 0 && lp.weight > 0) { 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 595053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 596053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + lp.topMargin + lp.bottomMargin); 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5985b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int oldHeight = Integer.MIN_VALUE; 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6005b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (lp.height == 0 && lp.weight > 0) { 601f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // heightMode is either UNSPECIFIED or AT_MOST, and this 602f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child wanted to stretch to fill available space. 603f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Translate that to WRAP_CONTENT so that it does not end up 604f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // with a height of 0 605f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne oldHeight = 0; 606f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne lp.height = LayoutParams.WRAP_CONTENT; 6075b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 609f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Determine how big this child would like to be. If this or 6105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // previous children have given a weight, then we allow it to 6115b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // use all available space (and we will shrink things later 6125b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // if needed). 6135b1b2417106f161e4bc66296888f4685f213eebdRomain Guy measureChildBeforeLayout( 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child, i, widthMeasureSpec, 0, heightMeasureSpec, 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0); 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (oldHeight != Integer.MIN_VALUE) { 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 6195b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6215b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childHeight = child.getMeasuredHeight(); 622053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 623053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childHeight + lp.topMargin + 624053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.bottomMargin + getNextLocationOffset(child)); 6255b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6265b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 6275b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildHeight = Math.max(childHeight, largestChildHeight); 6285b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 650980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.MATCH_PARENT) { 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 662189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 664980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 680fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mTotalLength > 0 && (mShowDividers & SHOW_DIVIDER_END) == SHOW_DIVIDER_END) { 681fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 682fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 683fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 684ff65c8c559941cac3f64ddaf350db318f3e993bbRomain Guy if (useLargestChild && heightMode == MeasureSpec.AT_MOST) { 6855b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 6865b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6875b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 6885b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 6895b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6905b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 6915b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 6925b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 6935b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6945b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6955b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 6965b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 6975b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 6985b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6995b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7005b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 7015b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 702053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // Account for negative margins 703053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 704053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildHeight + 705053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 7065b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7075b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7085b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 718189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int heightSizeAndState = resolveSizeAndState(heightSize, heightMeasureSpec, 0); 719189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSize = heightSizeAndState & MEASURED_SIZE_MASK; 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = heightSize - mTotalLength; 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingLeft + mPaddingRight + 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.leftMargin + lp.rightMargin, lp.width); 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.height != 0) || (heightMode != MeasureSpec.EXACTLY)) { 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above... 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // base new measurement on stored values 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + share; 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childHeight < 0) { 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = 0; 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Measure for this first time here 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(share > 0 ? share : 0, 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY)); 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 768189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 769189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in vertical dimension. 770189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState() 771189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT)); 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 779980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.width == LayoutParams.MATCH_PARENT; 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 784980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 786053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 787053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredHeight() + 788053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 792053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength += mPaddingTop + mPaddingBottom; 793053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we recompute the heightSpec based on the new total length? 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 808189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState), 809189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSizeAndState); 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 825980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.width == LayoutParams.MATCH_PARENT) { 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 853189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 8785b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 879c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy 880c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final boolean isExactly = widthMode == MeasureSpec.EXACTLY; 8815b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8825b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildWidth = Integer.MIN_VALUE; 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 884fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell // A divider at the end will change how much space views can consume. 885fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerBeginning = 886fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_BEGINNING) == SHOW_DIVIDER_BEGINNING; 887fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerMiddle = 888fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_MIDDLE) == SHOW_DIVIDER_MIDDLE; 889fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 891fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell boolean firstVisible = true; 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 905fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (firstVisible) { 906fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell firstVisible = false; 907fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerBeginning) { 908fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 909fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 910fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (showDividerMiddle) { 911fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 912fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 913fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 9145b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 9155b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.EXACTLY && lp.width == 0 && lp.weight > 0) { 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 923c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 924c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += lp.leftMargin + lp.rightMargin; 925c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 926c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 927c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + 928c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin); 929c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 9326c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // baseline offset (in particular for TextViews). The following 9336c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // defeats the optimization mentioned above. Allow the child to 9346c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // use as much space as it wants because we can shrink things 9356c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // later (and re-measure). 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int freeSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(freeSpec, freeSpec); 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = Integer.MIN_VALUE; 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.width == 0 && lp.weight > 0) { 944f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // widthMode is either UNSPECIFIED or AT_MOST, and this 945f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wanted to stretch to fill available space. Translate that to 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // WRAP_CONTENT so that it does not end up with a width of 0 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldWidth = 0; 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildBeforeLayout(child, i, widthMeasureSpec, 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0, 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldWidth != Integer.MIN_VALUE) { 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9635b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 9645b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childWidth = child.getMeasuredWidth(); 965c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 966c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += childWidth + lp.leftMargin + lp.rightMargin + 967c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 968c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 969c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 970c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childWidth + lp.leftMargin + 971c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.rightMargin + getNextLocationOffset(child)); 972c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 9735b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 9745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 9755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildWidth = Math.max(childWidth, largestChildWidth); 9765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 980980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.MATCH_PARENT) { 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 990189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1009980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1025fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mTotalLength > 0 && (mShowDividers & SHOW_DIVIDER_END) == SHOW_DIVIDER_END) { 1026fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1027fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1028fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1044cf635ae7c65de34f62a41cd330f25f4ee9ddc95bRomain Guy if (useLargestChild && widthMode == MeasureSpec.AT_MOST) { 10455b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 10465b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10475b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 10485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 10495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10505b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 10515b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 10525b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 10535b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10545b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 10565b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 10575b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 10585b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10595b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10605b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 10615b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1062c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1063c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += largestChildWidth + lp.leftMargin + lp.rightMargin + 1064c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1065c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1066c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1067c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildWidth + 1068c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1069c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 10705b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10715b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10725b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 1082189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int widthSizeAndState = resolveSizeAndState(widthSize, widthMeasureSpec, 0); 1083189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize = widthSizeAndState & MEASURED_SIZE_MASK; 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = widthSize - mTotalLength; 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeightMeasureSpec = getChildMeasureSpec( 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.width != 0) || (widthMode != MeasureSpec.EXACTLY)) { 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above ... base new measurement 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // on stored values 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = child.getMeasuredWidth() + share; 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childWidth < 0) { 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = 0; 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure( 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. Measure for this first time here 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(MeasureSpec.makeMeasureSpec( 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project share > 0 ? share : 0, MeasureSpec.EXACTLY), 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1138189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 1139189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in horizontal dimension. 1140189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, 1141189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn child.getMeasuredState() & MEASURED_STATE_MASK); 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1144c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1145c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin + 1146c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1147c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1148c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1149c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredWidth() + 1150c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1151c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 1154980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.height == LayoutParams.MATCH_PARENT; 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1162980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 1182053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we update widthSize with the new total length? 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1211189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSizeAndState | (childState&MEASURED_STATE_MASK), 1212189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn resolveSizeAndState(maxHeight, heightMeasureSpec, 1213189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn (childState<<MEASURED_HEIGHT_STATE_SHIFT))); 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to accomodate the heightMesureSpec from the parent 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1231980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.height == LayoutParams.MATCH_PARENT) { 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the size offset of the next sibling of the specified child. 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutVertical(); 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutHorizontal(); 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutVertical() { 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mPaddingTop; 13325b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childLeft; 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = mRight - mLeft; 13369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.HORIZONTAL_GRAVITY_MASK; 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mTotalLength contains the padding already, we add the top 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // padding to compensate 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop + mPaddingTop - mTotalLength; 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop) - mTotalLength) / 2; 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1360fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1361fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerMiddle = 1362fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_MIDDLE) == SHOW_DIVIDER_MIDDLE; 1363fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1364fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if ((mShowDividers & SHOW_DIVIDER_BEGINNING) == SHOW_DIVIDER_BEGINNING) { 1365fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell childTop += mDividerHeight; 1366fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1367fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += measureNullChild(i); 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.LEFT: 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + lp.leftMargin; 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1397611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1398611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childLeft = paddingLeft; 1399611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1407fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerMiddle) { 1408fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell childTop += mDividerHeight; 1409fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1410fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutHorizontal() { 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14275b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childTop; 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childLeft = mPaddingLeft; 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = mBottom - mTop; 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.HORIZONTAL_GRAVITY_MASK; 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.LEFT) { 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mTotalLength contains the padding already, we add the left 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // padding to compensate 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = mRight - mLeft + mPaddingLeft - mTotalLength; 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += ((mRight - mLeft) - mTotalLength) / 2; 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1459fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1460fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1461fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final boolean showDividerMiddle = 1462fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell (mShowDividers & SHOW_DIVIDER_MIDDLE) == SHOW_DIVIDER_MIDDLE; 1463fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1464fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if ((mShowDividers & SHOW_DIVIDER_BEGINNING) == SHOW_DIVIDER_BEGINNING) { 1465fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell childLeft += mDividerWidth; 1466fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += measureNullChild(i); 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1481980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (baselineAligned && lp.height != LayoutParams.MATCH_PARENT) { 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 14995b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // Removed support for baseline alignment when layout_gravity or 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 15059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1521611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1522611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childTop = paddingTop; 1523611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1532fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividerMiddle) { 1533fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell childLeft += mDividerWidth; 1534fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1535fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param orientation Pass HORIZONTAL or VERTICAL. Default 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * value is HORIZONTAL. 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOrientation(int orientation) { 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 15709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 15719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 15739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 15759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 15779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 15799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 15809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) { 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.LEFT; 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 15909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 15959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = horizontalGravity & Gravity.HORIZONTAL_GRAVITY_MASK; 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != gravity) { 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.HORIZONTAL_GRAVITY_MASK) | gravity; 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 16009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 16079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 16089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 16099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 16149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 1619980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 16219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 16239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 16289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 1630980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { 16379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(p); 16389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 16529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1660bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 16619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1668bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout", mapping = { 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 16729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 16769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 16809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 16839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 16889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 16899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 16909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 17099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1710980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param width the width, either {@link #MATCH_PARENT}, 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 1712980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param height the height, either {@link #MATCH_PARENT}, 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 17189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(MarginLayoutParams source) { 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1742