LinearLayout.java revision 6a03640539405afbdefe72894759281b98aa6e6f
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"), 1136a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio @ViewDebug.IntToString(from = Gravity.BEFORE, to = "BEFORE"), 1146a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio @ViewDebug.IntToString(from = Gravity.AFTER, to = "AFTER"), 115d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 116d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 117d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 118d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 119d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 120d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 121d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn }) 1226a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio private int mGravity = Gravity.BEFORE | Gravity.TOP; 123bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 124bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTotalLength; 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 127bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mWeightSum; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 130bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1315b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private boolean mUseLargestChild; 1325b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxAscent; 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxDescent; 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int VERTICAL_GRAVITY_COUNT = 4; 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_CENTER_VERTICAL = 0; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_TOP = 1; 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_BOTTOM = 2; 1415b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private static final int INDEX_FILL = 3; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 143fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private Drawable mDivider; 144fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerWidth; 145fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerHeight; 146fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mShowDividers; 147fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerPadding; 148fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context) { 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context, AttributeSet attrs) { 1549295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy this(context, attrs, 0); 1559295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 1569295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 1579295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public LinearLayout(Context context, AttributeSet attrs, int defStyle) { 1589295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy super(context, attrs, defStyle); 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1603f7f7ac30af6ea572aca44df91363cff7fcd9fefAdam Powell TypedArray a = context.obtainStyledAttributes(attrs, 1613f7f7ac30af6ea572aca44df91363cff7fcd9fefAdam Powell com.android.internal.R.styleable.LinearLayout, defStyle, 0); 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = a.getInt(com.android.internal.R.styleable.LinearLayout_orientation, -1); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = a.getInt(com.android.internal.R.styleable.LinearLayout_gravity, -1); 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setGravity(index); 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean baselineAligned = a.getBoolean(R.styleable.LinearLayout_baselineAligned, true); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!baselineAligned) { 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setBaselineAligned(baselineAligned); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = a.getFloat(R.styleable.LinearLayout_weightSum, -1.0f); 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1); 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1839295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_measureWithLargestChild, false); 1845b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 185fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setDividerDrawable(a.getDrawable(R.styleable.LinearLayout_divider)); 186fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = a.getInt(R.styleable.LinearLayout_showDividers, SHOW_DIVIDER_NONE); 187fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerPadding = a.getDimensionPixelSize(R.styleable.LinearLayout_dividerPadding, 0); 188fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 193fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set how dividers should be shown between items in this layout 194fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * 195fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING}, 196fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END}, 197fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * or {@link #SHOW_DIVIDER_NONE} to show no dividers. 198fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 199fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setShowDividers(int showDividers) { 200fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividers != mShowDividers) { 201fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 202fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 203fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = showDividers; 204fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 205fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 206e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy @Override 207e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy public boolean shouldDelayChildPressedState() { 208e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy return false; 209e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy } 210e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy 211fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 212fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @return A flag set indicating how dividers should be shown around items. 213fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 214fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 215fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public int getShowDividers() { 216fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return mShowDividers; 217fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 218fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 219fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 220fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set a drawable to be used as a divider between items. 221fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param divider Drawable that will divide each item. 222fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 223fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 224fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setDividerDrawable(Drawable divider) { 225fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider == mDivider) { 226fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 227fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 228fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider = divider; 229fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider != null) { 230fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = divider.getIntrinsicWidth(); 231fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = divider.getIntrinsicHeight(); 232fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 233fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = 0; 234fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = 0; 235fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 236fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setWillNotDraw(divider == null); 237fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 238fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 239fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 240696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 241696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Set padding displayed on both ends of dividers. 242696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 243696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param padding Padding value in pixels that will be applied to each end 244696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 245696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 246696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 247696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #getDividerPadding() 248696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 249696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public void setDividerPadding(int padding) { 250696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell mDividerPadding = padding; 251696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 252696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 253696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 254696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Get the padding size used to inset dividers in pixels 255696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 256696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 257696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 258696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerPadding(int) 259696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 260696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public int getDividerPadding() { 261696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return mDividerPadding; 262696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 263696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 264640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell /** 265640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * Get the width of the current divider drawable. 266640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * 267640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * @hide Used internally by framework. 268640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell */ 269640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell public int getDividerWidth() { 270640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell return mDividerWidth; 271640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell } 272640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell 273fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell @Override 274fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell protected void onDraw(Canvas canvas) { 275fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mDivider == null) { 276fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 277fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 278fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 279fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mOrientation == VERTICAL) { 280fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersVertical(canvas); 281fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 282fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersHorizontal(canvas); 283fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 284fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 285fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 286fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersVertical(Canvas canvas) { 287fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 288fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell int top = getPaddingTop(); 289fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 290fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 291fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 292fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (child == null) { 293fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += measureNullChild(i); 294fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (child.getVisibility() != GONE) { 295696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 296fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 297fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += mDividerHeight; 298fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 299fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 300fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell LayoutParams lp = (LayoutParams) child.getLayoutParams(); 301fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell top += lp.topMargin + child.getHeight() + lp.bottomMargin; 302fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 303fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 304fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 305696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 306fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 307fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 308fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 309fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 310fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersHorizontal(Canvas canvas) { 311fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 312fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell int left = getPaddingLeft(); 313fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 314fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 315fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 316fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (child == null) { 317fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += measureNullChild(i); 318fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else if (child.getVisibility() != GONE) { 319696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 320fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawVerticalDivider(canvas, left); 321fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += mDividerWidth; 322fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 323fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 324fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell LayoutParams lp = (LayoutParams) child.getLayoutParams(); 325fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left += lp.leftMargin + child.getWidth() + lp.rightMargin; 326fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 327fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 328fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 329696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 330fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawVerticalDivider(canvas, left); 331fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 332fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 333fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 334fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawHorizontalDivider(Canvas canvas, int top) { 335fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(getPaddingLeft() + mDividerPadding, top, 336fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight); 337fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 338fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 339fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 340fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawVerticalDivider(Canvas canvas, int left) { 341fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(left, getPaddingTop() + mDividerPadding, 342fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding); 343fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 344fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 345fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 346fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3709295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 3719295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When 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 * @return True to measure children with a weight using the minimum 3769295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * size of the largest child, false otherwise. 3779295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 3789295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public boolean isMeasureWithLargestChildEnabled() { 3799295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy return mUseLargestChild; 3809295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 3819295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 3829295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 3839295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When set to true, all children with a weight will be considered having 3849295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 3859295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 3869295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 3879295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * Disabled by default. 3889295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 3899295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @param enabled True to measure children with a weight using the 3909295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * minimum size of the largest child, false otherwise. 3919295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 3929295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy @android.view.RemotableViewMethod 3939295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public void setMeasureWithLargestChildEnabled(boolean enabled) { 3949295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = enabled; 3959295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 3969295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the child at the specified index 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 538696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Determines where to position dividers between children. 539696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 540696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param childIndex Index of child to check for preceding divider 541696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @return true if there should be a divider before the child at childIndex 542696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @hide Pending API consideration. Currently only used internally by the system. 543696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 544696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell protected boolean hasDividerBeforeChildAt(int childIndex) { 545696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (childIndex == 0) { 546696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0; 547696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } else if (childIndex == getChildCount()) { 548696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_END) != 0; 549696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } else { 550696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_MIDDLE) != 0; 551696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 552696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 553696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 554696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 568189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 5825b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 5835b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 5845b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildHeight = Integer.MIN_VALUE; 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 600696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 601fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 602fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 603fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.EXACTLY && lp.height == 0 && lp.weight > 0) { 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 612053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 613053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + lp.topMargin + lp.bottomMargin); 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6155b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int oldHeight = Integer.MIN_VALUE; 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (lp.height == 0 && lp.weight > 0) { 618f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // heightMode is either UNSPECIFIED or AT_MOST, and this 619f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child wanted to stretch to fill available space. 620f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Translate that to WRAP_CONTENT so that it does not end up 621f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // with a height of 0 622f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne oldHeight = 0; 623f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne lp.height = LayoutParams.WRAP_CONTENT; 6245b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 626f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Determine how big this child would like to be. If this or 6275b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // previous children have given a weight, then we allow it to 6285b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // use all available space (and we will shrink things later 6295b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // if needed). 6305b1b2417106f161e4bc66296888f4685f213eebdRomain Guy measureChildBeforeLayout( 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child, i, widthMeasureSpec, 0, heightMeasureSpec, 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0); 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6345b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (oldHeight != Integer.MIN_VALUE) { 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 6365b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6385b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childHeight = child.getMeasuredHeight(); 639053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 640053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childHeight + lp.topMargin + 641053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.bottomMargin + getNextLocationOffset(child)); 6425b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6435b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 6445b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildHeight = Math.max(childHeight, largestChildHeight); 6455b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 667980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.MATCH_PARENT) { 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 679189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 681980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6965b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 697696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 698fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 699fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 700fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 701ff65c8c559941cac3f64ddaf350db318f3e993bbRomain Guy if (useLargestChild && heightMode == MeasureSpec.AT_MOST) { 7025b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 7035b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7045b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 7055b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 7065b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7075b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 7085b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 7095b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 7105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7115b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7125b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 7135b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 7145b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 7155b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7165b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 7185b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 719053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // Account for negative margins 720053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 721053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildHeight + 722053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 7235b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7245b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7255b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 735189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int heightSizeAndState = resolveSizeAndState(heightSize, heightMeasureSpec, 0); 736189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSize = heightSizeAndState & MEASURED_SIZE_MASK; 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = heightSize - mTotalLength; 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingLeft + mPaddingRight + 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.leftMargin + lp.rightMargin, lp.width); 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.height != 0) || (heightMode != MeasureSpec.EXACTLY)) { 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above... 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // base new measurement on stored values 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + share; 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childHeight < 0) { 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = 0; 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Measure for this first time here 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(share > 0 ? share : 0, 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY)); 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 785189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 786189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in vertical dimension. 787189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState() 788189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT)); 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 796980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.width == LayoutParams.MATCH_PARENT; 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 801980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 803053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 804053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredHeight() + 805053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 809053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength += mPaddingTop + mPaddingBottom; 810053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we recompute the heightSpec based on the new total length? 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 825189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState), 826189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSizeAndState); 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 842980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.width == LayoutParams.MATCH_PARENT) { 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 870189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 8955b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 896c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy 897c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final boolean isExactly = widthMode == MeasureSpec.EXACTLY; 8985b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8995b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildWidth = Integer.MIN_VALUE; 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 915696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 916fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 917fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 918fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 9195b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 9205b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.EXACTLY && lp.width == 0 && lp.weight > 0) { 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 928c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 929c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += lp.leftMargin + lp.rightMargin; 930c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 931c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 932c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + 933c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin); 934c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 9376c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // baseline offset (in particular for TextViews). The following 9386c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // defeats the optimization mentioned above. Allow the child to 9396c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // use as much space as it wants because we can shrink things 9406c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // later (and re-measure). 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int freeSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(freeSpec, freeSpec); 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = Integer.MIN_VALUE; 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.width == 0 && lp.weight > 0) { 949f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // widthMode is either UNSPECIFIED or AT_MOST, and this 950f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wanted to stretch to fill available space. Translate that to 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // WRAP_CONTENT so that it does not end up with a width of 0 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldWidth = 0; 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildBeforeLayout(child, i, widthMeasureSpec, 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0, 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldWidth != Integer.MIN_VALUE) { 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9685b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 9695b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childWidth = child.getMeasuredWidth(); 970c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 971c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += childWidth + lp.leftMargin + lp.rightMargin + 972c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 973c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 974c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 975c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childWidth + lp.leftMargin + 976c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.rightMargin + getNextLocationOffset(child)); 977c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 9785b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 9795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 9805b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildWidth = Math.max(childWidth, largestChildWidth); 9815b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 985980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.MATCH_PARENT) { 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 995189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1014980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1030696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 1031fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1032fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1033fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1049cf635ae7c65de34f62a41cd330f25f4ee9ddc95bRomain Guy if (useLargestChild && widthMode == MeasureSpec.AT_MOST) { 10505b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 10515b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10525b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 10535b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 10545b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 10565b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 10575b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 10585b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10595b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10605b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 10615b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 10625b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 10635b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10645b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10655b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 10665b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1067c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1068c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += largestChildWidth + lp.leftMargin + lp.rightMargin + 1069c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1070c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1071c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1072c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildWidth + 1073c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1074c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 10755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10775b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 1087189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int widthSizeAndState = resolveSizeAndState(widthSize, widthMeasureSpec, 0); 1088189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize = widthSizeAndState & MEASURED_SIZE_MASK; 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = widthSize - mTotalLength; 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeightMeasureSpec = getChildMeasureSpec( 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.width != 0) || (widthMode != MeasureSpec.EXACTLY)) { 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above ... base new measurement 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // on stored values 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = child.getMeasuredWidth() + share; 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childWidth < 0) { 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = 0; 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure( 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. Measure for this first time here 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(MeasureSpec.makeMeasureSpec( 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project share > 0 ? share : 0, MeasureSpec.EXACTLY), 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1143189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 1144189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in horizontal dimension. 1145189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, 1146189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn child.getMeasuredState() & MEASURED_STATE_MASK); 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1149c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1150c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin + 1151c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1152c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1153c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1154c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredWidth() + 1155c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1156c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 1159980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.height == LayoutParams.MATCH_PARENT; 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1167980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 1187053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we update widthSize with the new total length? 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1216189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSizeAndState | (childState&MEASURED_STATE_MASK), 1217189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn resolveSizeAndState(maxHeight, heightMeasureSpec, 1218189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn (childState<<MEASURED_HEIGHT_STATE_SHIFT))); 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to accomodate the heightMesureSpec from the parent 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1236980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.height == LayoutParams.MATCH_PARENT) { 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the size offset of the next sibling of the specified child. 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutVertical(); 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutHorizontal(); 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutVertical() { 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13361e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childTop; 13375b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childLeft; 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = mRight - mLeft; 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 13496a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int minorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13511e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio switch (majorGravity) { 13521e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.BOTTOM: 13531e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 13541e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop + mBottom - mTop - mTotalLength; 13551e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 13561e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 13571e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 13581e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_VERTICAL: 13591e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop + (mBottom - mTop - mTotalLength) / 2; 13601e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 13611e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 13621e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.TOP: 13631e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 13641e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop; 13651e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 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 } 13836a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio gravity = Gravity.getAbsoluteGravity(gravity, isLayoutRtl()); 13841e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio switch (gravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 13931e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 13941e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 1395611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 13961e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = paddingLeft + lp.leftMargin; 1397611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13991e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 1400696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1401696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childTop += mDividerHeight; 1402696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1403696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutHorizontal() { 14231e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14265b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childTop; 14271e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childLeft; 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = mBottom - mTop; 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14386a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int majorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14466a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio switch (Gravity.getAbsoluteGravity(majorGravity, isLayoutRtl())) { 14471e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.RIGHT: 14481e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 14491e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft + mRight - mLeft - mTotalLength; 14501e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 14511e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 14521e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_HORIZONTAL: 14531e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 14541e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft + (mRight - mLeft - mTotalLength) / 2; 14551e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 14561e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 14571e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 14581e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 14591e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft; 14601e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 14611e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio } 14621e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 14631e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int start = 0; 14641e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int dir = 1; 14651e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio //In case of RTL, start drawing from the last child. 14661e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (isLayoutRtl) { 14671e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio start = count - 1; 14681e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio dir = -1; 1469fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1470fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 14721e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childIndex = start + dir * i; 14731e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final View child = getVirtualChildAt(childIndex); 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 14761e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft += measureNullChild(childIndex); 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1485980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (baselineAligned && lp.height != LayoutParams.MATCH_PARENT) { 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 15035b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // Removed support for baseline alignment when layout_gravity or 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 15059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1525611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1526611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childTop = paddingTop; 1527611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15301e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (hasDividerBeforeChildAt(childIndex)) { 1531696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childLeft += mDividerWidth; 1532696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1533696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 15359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15401e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio i += getChildrenSkipCount(child, childIndex); 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param orientation Pass HORIZONTAL or VERTICAL. Default 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * value is HORIZONTAL. 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOrientation(int orientation) { 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 15609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 15699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 15709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 15759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 15769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 15779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 15799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 15849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 15856a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) { 15866a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio gravity |= Gravity.BEFORE; 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 15909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 15959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 16006a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int gravity = horizontalGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 16016a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) != gravity) { 16026a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio mGravity = (mGravity & ~Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) | gravity; 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 16089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 16099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 16109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 16119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 16129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 16139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 16189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 16199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 1623980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 16289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 1634980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 16379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { 16419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(p); 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 16609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 16619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1664bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1672bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout", mapping = { 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 16769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 16796a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio @ViewDebug.IntToString(from = Gravity.BEFORE, to = "BEFORE"), 16806a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio @ViewDebug.IntToString(from = Gravity.AFTER, to = "AFTER"), 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 16839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 16849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 16859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 16889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 16899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 17099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 17109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1716980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param width the width, either {@link #MATCH_PARENT}, 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 1718980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param height the height, either {@link #MATCH_PARENT}, 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(MarginLayoutParams source) { 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1748