LinearLayout.java revision fc53e584d3d6ae106752cce334f143a68eb161bd
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; 308a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityEvent; 318a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityNodeInfo; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.RemoteViews.RemoteView; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A Layout that arranges its children in a single column or a single row. The direction of 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the row can be set by calling {@link #setOrientation(int) setOrientation()}. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You can also specify gravity, which specifies the alignment of all the child elements by 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * calling {@link #setGravity(int) setGravity()} or specify that specific children 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * grow to fill up any remaining space in the layout by setting the <em>weight</em> member of 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams}. 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The default orientation is horizontal. 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 444c359b76f9a030f92a302ba74a528faa170bad4eScott Main * <p>See the <a href="{@docRoot}guide/topics/ui/layout/linear.html">Linear Layout</a> 454c359b76f9a030f92a302ba74a528faa170bad4eScott Main * guide.</p> 4641ec65355bd6ded652769725b276d47c54a0d913Scott Main * 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Also see {@link LinearLayout.LayoutParams android.widget.LinearLayout.LayoutParams} 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes </p> 509295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 519295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAligned 529295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 539295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_gravity 549295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 559295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_orientation 569295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_weightSum 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project@RemoteView 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class LinearLayout extends ViewGroup { 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int HORIZONTAL = 0; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int VERTICAL = 1; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 64fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Don't show any dividers. 65fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 66fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_NONE = 0; 67fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 68fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the beginning of the group. 69fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 70fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_BEGINNING = 1; 71fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 72fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show dividers between each item in the group. 73fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 74fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_MIDDLE = 2; 75fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 76fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the end of the group. 77fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 78fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_END = 4; 79fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 80fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether the children of this layout are baseline aligned. Only applicable 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if {@link #mOrientation} is horizontal. 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 84bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mBaselineAligned = true; 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this layout is part of another layout that is baseline aligned, 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * use the child at this index as the baseline. 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note: this is orthogonal to {@link #mBaselineAligned}, which is concerned 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with whether the children of this layout are baseline aligned. 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 94bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 95c1f9c40c23a756a11394a35f37053f796494b224Karl Rosaen private int mBaselineAlignedChildIndex = -1; 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The additional offset to the child's baseline. 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * We'll calculate the baseline of this layout as we measure vertically; for 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * horizontal linear layouts, the offset of 0 is appropriate. 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 102bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBaselineChildTop = 0; 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 105bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mOrientation; 107bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 108bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.ExportedProperty(category = "measurement", flagMapping = { 109bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = -1, 110bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = -1, name = "NONE"), 111bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.NO_GRAVITY, 112bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.NO_GRAVITY,name = "NONE"), 113bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.TOP, 114bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.TOP, name = "TOP"), 115bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.BOTTOM, 116bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.BOTTOM, name = "BOTTOM"), 117bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.LEFT, 118bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.LEFT, name = "LEFT"), 119bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.RIGHT, 120bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.RIGHT, name = "RIGHT"), 1219e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.START, 1229e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio equals = Gravity.START, name = "START"), 1239e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.END, 1249e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio equals = Gravity.END, name = "END"), 125bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER_VERTICAL, 126bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER_VERTICAL, name = "CENTER_VERTICAL"), 127bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL_VERTICAL, 128bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL_VERTICAL, name = "FILL_VERTICAL"), 129bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER_HORIZONTAL, 130bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER_HORIZONTAL, name = "CENTER_HORIZONTAL"), 131bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL_HORIZONTAL, 132bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL_HORIZONTAL, name = "FILL_HORIZONTAL"), 133bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER, 134bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER, name = "CENTER"), 135bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL, 136bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL, name = "FILL"), 137c46f7ffa9079f3ae8a5204e7519ed7a1250116d0Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.RELATIVE_LAYOUT_DIRECTION, 138c46f7ffa9079f3ae8a5204e7519ed7a1250116d0Fabrice Di Meglio equals = Gravity.RELATIVE_LAYOUT_DIRECTION, name = "RELATIVE") 139d68478467e3f837511196c80891d7245d0e163dfDianne Hackborn }) 1409e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio private int mGravity = Gravity.START | Gravity.TOP; 141bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 142bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTotalLength; 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 145bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mWeightSum; 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 148bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private boolean mUseLargestChild; 1505b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxAscent; 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxDescent; 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int VERTICAL_GRAVITY_COUNT = 4; 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_CENTER_VERTICAL = 0; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_TOP = 1; 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_BOTTOM = 2; 1595b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private static final int INDEX_FILL = 3; 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 161fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private Drawable mDivider; 162fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerWidth; 163fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerHeight; 164fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mShowDividers; 165fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerPadding; 166fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context) { 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context, AttributeSet attrs) { 1729295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy this(context, attrs, 0); 1739295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 1749295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 1759295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public LinearLayout(Context context, AttributeSet attrs, int defStyle) { 1769295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy super(context, attrs, defStyle); 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1783f7f7ac30af6ea572aca44df91363cff7fcd9fefAdam Powell TypedArray a = context.obtainStyledAttributes(attrs, 1793f7f7ac30af6ea572aca44df91363cff7fcd9fefAdam Powell com.android.internal.R.styleable.LinearLayout, defStyle, 0); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = a.getInt(com.android.internal.R.styleable.LinearLayout_orientation, -1); 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = a.getInt(com.android.internal.R.styleable.LinearLayout_gravity, -1); 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setGravity(index); 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean baselineAligned = a.getBoolean(R.styleable.LinearLayout_baselineAligned, true); 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!baselineAligned) { 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setBaselineAligned(baselineAligned); 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = a.getFloat(R.styleable.LinearLayout_weightSum, -1.0f); 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1); 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2019295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_measureWithLargestChild, false); 2025b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 203fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setDividerDrawable(a.getDrawable(R.styleable.LinearLayout_divider)); 204fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = a.getInt(R.styleable.LinearLayout_showDividers, SHOW_DIVIDER_NONE); 205fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerPadding = a.getDimensionPixelSize(R.styleable.LinearLayout_dividerPadding, 0); 206fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 211fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set how dividers should be shown between items in this layout 212fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * 213fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING}, 214fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END}, 215fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * or {@link #SHOW_DIVIDER_NONE} to show no dividers. 216fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 217fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setShowDividers(int showDividers) { 218fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividers != mShowDividers) { 219fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 220fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 221fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = showDividers; 222fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 223fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 224e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy @Override 225e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy public boolean shouldDelayChildPressedState() { 226e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy return false; 227e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy } 228e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy 229fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 230fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @return A flag set indicating how dividers should be shown around items. 231fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 232fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 233fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public int getShowDividers() { 234fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return mShowDividers; 235fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 236fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 237fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 2381018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @return the divider Drawable that will divide each item. 2391018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2401018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @see #setDividerDrawable(Drawable) 2411018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2421018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 2431018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne */ 2441018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne public Drawable getDividerDrawable() { 2451018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne return mDivider; 2461018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne } 2471018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne 2481018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne /** 249fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set a drawable to be used as a divider between items. 2501018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 251fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param divider Drawable that will divide each item. 2521018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 253fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 2541018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2551018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 256fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 257fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setDividerDrawable(Drawable divider) { 258fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider == mDivider) { 259fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 260fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 261fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider = divider; 262fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider != null) { 263fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = divider.getIntrinsicWidth(); 264fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = divider.getIntrinsicHeight(); 265fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 266fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = 0; 267fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = 0; 268fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 269fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setWillNotDraw(divider == null); 270fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 271fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 272fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 273696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 274696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Set padding displayed on both ends of dividers. 275696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 276696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param padding Padding value in pixels that will be applied to each end 277696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 278696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 279696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 280696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #getDividerPadding() 281696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 282696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public void setDividerPadding(int padding) { 283696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell mDividerPadding = padding; 284696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 285696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 286696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 287696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Get the padding size used to inset dividers in pixels 288696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 289696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 290696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 291696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerPadding(int) 292696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 293696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public int getDividerPadding() { 294696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return mDividerPadding; 295696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 296696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 297640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell /** 298640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * Get the width of the current divider drawable. 299640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * 300640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * @hide Used internally by framework. 301640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell */ 302640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell public int getDividerWidth() { 303640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell return mDividerWidth; 304640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell } 305640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell 306fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell @Override 307fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell protected void onDraw(Canvas canvas) { 308fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mDivider == null) { 309fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 310fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 311fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 312fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mOrientation == VERTICAL) { 313fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersVertical(canvas); 314fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 315fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersHorizontal(canvas); 316fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 317fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 318fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 319fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersVertical(Canvas canvas) { 320fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 321fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 322fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 323fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 32435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 325696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 32635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 32720761fcdcd513a808e855708fe2e676e409beb36Vladimir Baryshnikov final int top = child.getTop() - lp.topMargin - mDividerHeight; 328fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 329fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 330fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 331fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 332fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 333696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 33435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final View child = getVirtualChildAt(count - 1); 33535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell int bottom = 0; 33635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 33735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = getHeight() - getPaddingBottom() - mDividerHeight; 33835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 33935aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 34035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = child.getBottom() + lp.bottomMargin; 34135aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 34235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell drawHorizontalDivider(canvas, bottom); 343fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 344fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 345fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 346fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersHorizontal(Canvas canvas) { 347fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 3484ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 349fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 350fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 351fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 35235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 353696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 35435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 3554ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final int position; 3564ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 3574ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 3584ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 3594ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 3604ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 3614ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 362fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 363fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 364fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 365fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 366696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 36735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final View child = getVirtualChildAt(count - 1); 3684ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio int position; 36935aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 3704ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 3714ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getPaddingLeft(); 3724ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 3734ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getWidth() - getPaddingRight() - mDividerWidth; 3744ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 37535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 37635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 3774ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 3784ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 3794ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 3804ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 3814ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 38235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 3834ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 384fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 385fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 386fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 387fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawHorizontalDivider(Canvas canvas, int top) { 388fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(getPaddingLeft() + mDividerPadding, top, 389fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight); 390fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 391fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 392fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 393fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawVerticalDivider(Canvas canvas, int left) { 394fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(left, getPaddingTop() + mDividerPadding, 395fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding); 396fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 397fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 398fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 399fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4239295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4249295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When true, all children with a weight will be considered having 4259295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4269295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 4279295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4289295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @return True to measure children with a weight using the minimum 4299295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * size of the largest child, false otherwise. 4301018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 4311018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 4329295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 4339295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public boolean isMeasureWithLargestChildEnabled() { 4349295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy return mUseLargestChild; 4359295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 4369295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 4379295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4389295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When set to true, all children with a weight will be considered having 4399295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4409295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 4419295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4429295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * Disabled by default. 4439295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4449295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @param enabled True to measure children with a weight using the 4459295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * minimum size of the largest child, false otherwise. 4461018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 4471018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 4489295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 4499295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy @android.view.RemotableViewMethod 4509295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public void setMeasureWithLargestChildEnabled(boolean enabled) { 4519295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = enabled; 4529295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 4539295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the child at the specified index 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 595696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Determines where to position dividers between children. 596696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 597696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param childIndex Index of child to check for preceding divider 598696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @return true if there should be a divider before the child at childIndex 599696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @hide Pending API consideration. Currently only used internally by the system. 600696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 601696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell protected boolean hasDividerBeforeChildAt(int childIndex) { 602696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (childIndex == 0) { 603696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0; 604696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } else if (childIndex == getChildCount()) { 605696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_END) != 0; 606bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } else if ((mShowDividers & SHOW_DIVIDER_MIDDLE) != 0) { 607bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell boolean hasVisibleViewBefore = false; 608bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell for (int i = childIndex - 1; i >= 0; i--) { 609bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell if (getChildAt(i).getVisibility() != GONE) { 610bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell hasVisibleViewBefore = true; 611bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell break; 612bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } 613bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } 614bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell return hasVisibleViewBefore; 615696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 616bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell return false; 617696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 618696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 619696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 633189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 6475b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 6485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildHeight = Integer.MIN_VALUE; 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 651fbc21e126f329b7b7c161858c1390ccb023be07eFabrice Di Meglio final int layoutDirection = getLayoutDirection(); 652fbc21e126f329b7b7c161858c1390ccb023be07eFabrice Di Meglio 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 667696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 668fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 669fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 670fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 672f6215e55df1ab4f6cda33dd081c0a91062a1be63Fabrice Di Meglio lp.resolveLayoutDirection(layoutDirection); 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.EXACTLY && lp.height == 0 && lp.weight > 0) { 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 680053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 681053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + lp.topMargin + lp.bottomMargin); 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6835b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int oldHeight = Integer.MIN_VALUE; 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6855b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (lp.height == 0 && lp.weight > 0) { 686f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // heightMode is either UNSPECIFIED or AT_MOST, and this 687f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child wanted to stretch to fill available space. 688f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Translate that to WRAP_CONTENT so that it does not end up 689f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // with a height of 0 690f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne oldHeight = 0; 691f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne lp.height = LayoutParams.WRAP_CONTENT; 6925b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 694f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Determine how big this child would like to be. If this or 6955b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // previous children have given a weight, then we allow it to 6965b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // use all available space (and we will shrink things later 6975b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // if needed). 6985b1b2417106f161e4bc66296888f4685f213eebdRomain Guy measureChildBeforeLayout( 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child, i, widthMeasureSpec, 0, heightMeasureSpec, 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0); 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7025b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (oldHeight != Integer.MIN_VALUE) { 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 7045b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7065b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childHeight = child.getMeasuredHeight(); 707053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 708053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childHeight + lp.topMargin + 709053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.bottomMargin + getNextLocationOffset(child)); 7105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7115b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 7125b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildHeight = Math.max(childHeight, largestChildHeight); 7135b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 735980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.MATCH_PARENT) { 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 747189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 749980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7645b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 765696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 766fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 767fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 768fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 769f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 770f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (heightMode == MeasureSpec.AT_MOST || heightMode == MeasureSpec.UNSPECIFIED)) { 7715b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 7725b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7735b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 7745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 7755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 7775b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 7785b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 7795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7805b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7815b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 7825b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 7835b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 7845b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7855b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7865b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 7875b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 788053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // Account for negative margins 789053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 790053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildHeight + 791053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 7925b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7935b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7945b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 804189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int heightSizeAndState = resolveSizeAndState(heightSize, heightMeasureSpec, 0); 805189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSize = heightSizeAndState & MEASURED_SIZE_MASK; 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = heightSize - mTotalLength; 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingLeft + mPaddingRight + 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.leftMargin + lp.rightMargin, lp.width); 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.height != 0) || (heightMode != MeasureSpec.EXACTLY)) { 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above... 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // base new measurement on stored values 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + share; 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childHeight < 0) { 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = 0; 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Measure for this first time here 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(share > 0 ? share : 0, 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY)); 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 854189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 855189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in vertical dimension. 856189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState() 857189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT)); 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 865980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.width == LayoutParams.MATCH_PARENT; 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 870980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 872053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 873053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredHeight() + 874053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 878053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength += mPaddingTop + mPaddingBottom; 879053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we recompute the heightSpec based on the new total length? 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 883f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 884f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 885f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as tall as the largest child. 886f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 887eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && heightMode != MeasureSpec.EXACTLY) { 888f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 889f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 890f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 891f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 892f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 893f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 894f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 895f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 896f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 897f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 898f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 899f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 900f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 901f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredWidth(), 902f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY), 903f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildHeight, 904f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 905f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 906f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 907f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState), 920189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSizeAndState); 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 9289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 9299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 936980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.width == LayoutParams.MATCH_PARENT) { 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 964189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 9895b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 990c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy 991c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final boolean isExactly = widthMode == MeasureSpec.EXACTLY; 9925b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 9935b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildWidth = Integer.MIN_VALUE; 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 995fbc21e126f329b7b7c161858c1390ccb023be07eFabrice Di Meglio final int layoutDirection = getLayoutDirection(); 996fbc21e126f329b7b7c161858c1390ccb023be07eFabrice Di Meglio 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1011696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1012fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1013fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1014fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 10155b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 10165b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1017f6215e55df1ab4f6cda33dd081c0a91062a1be63Fabrice Di Meglio lp.resolveLayoutDirection(layoutDirection); 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.EXACTLY && lp.width == 0 && lp.weight > 0) { 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 1025c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1026c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += lp.leftMargin + lp.rightMargin; 1027c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1028c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1029c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + 1030c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin); 1031c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 10346c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // baseline offset (in particular for TextViews). The following 10356c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // defeats the optimization mentioned above. Allow the child to 10366c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // use as much space as it wants because we can shrink things 10376c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // later (and re-measure). 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int freeSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(freeSpec, freeSpec); 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = Integer.MIN_VALUE; 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.width == 0 && lp.weight > 0) { 1046f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // widthMode is either UNSPECIFIED or AT_MOST, and this 1047f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wanted to stretch to fill available space. Translate that to 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // WRAP_CONTENT so that it does not end up with a width of 0 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldWidth = 0; 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildBeforeLayout(child, i, widthMeasureSpec, 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0, 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldWidth != Integer.MIN_VALUE) { 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10655b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10665b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childWidth = child.getMeasuredWidth(); 1067c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1068c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += childWidth + lp.leftMargin + lp.rightMargin + 1069c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1070c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1071c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1072c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childWidth + lp.leftMargin + 1073c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.rightMargin + getNextLocationOffset(child)); 1074c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 10755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 10775b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildWidth = Math.max(childWidth, largestChildWidth); 10785b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 1082980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.MATCH_PARENT) { 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 1092189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1111980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1127696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 1128fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1129fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1130fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1146f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 1147f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.UNSPECIFIED)) { 11485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 11495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11505b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 11515b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 11525b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11535b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 11545b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 11555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 11565b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11575b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11585b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 11595b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 11605b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 11615b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11625b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11635b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 11645b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1165c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1166c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += largestChildWidth + lp.leftMargin + lp.rightMargin + 1167c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1168c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1169c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1170c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildWidth + 1171c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1172c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11735b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 1185189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int widthSizeAndState = resolveSizeAndState(widthSize, widthMeasureSpec, 0); 1186189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize = widthSizeAndState & MEASURED_SIZE_MASK; 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shrink them if they extend beyond our current bounds 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = widthSize - mTotalLength; 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0 && totalWeight > 0.0f) { 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeightMeasureSpec = getChildMeasureSpec( 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.width != 0) || (widthMode != MeasureSpec.EXACTLY)) { 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above ... base new measurement 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // on stored values 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = child.getMeasuredWidth() + share; 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childWidth < 0) { 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = 0; 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure( 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. Measure for this first time here 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(MeasureSpec.makeMeasureSpec( 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project share > 0 ? share : 0, MeasureSpec.EXACTLY), 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1241189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 1242189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in horizontal dimension. 1243189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, 1244189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn child.getMeasuredState() & MEASURED_STATE_MASK); 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1247c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1248c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin + 1249c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1250c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1251c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1252c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredWidth() + 1253c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1254c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 1257980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.height == LayoutParams.MATCH_PARENT; 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1265980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 1285053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we update widthSize with the new total length? 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 1303f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1304f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as wide as the largest child. 1305f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 1306eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && widthMode != MeasureSpec.EXACTLY) { 1307f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 1308f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 1309f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1310f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 1311f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 1312f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1313f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1314f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 1315f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 1316f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1317f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 1318f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 1319f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 1320f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildWidth, MeasureSpec.EXACTLY), 1321f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredHeight(), 1322f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 1323f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1324f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1325f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 13369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1337189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSizeAndState | (childState&MEASURED_STATE_MASK), 1338189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn resolveSizeAndState(maxHeight, heightMeasureSpec, 1339189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn (childState<<MEASURED_HEIGHT_STATE_SHIFT))); 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 1349fc53e584d3d6ae106752cce334f143a68eb161bdFabrice Di Meglio // to accommodate the heightMeasureSpec from the parent 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1357980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.height == LayoutParams.MATCH_PARENT) { 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 13999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the size offset of the next sibling of the specified child. 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutVertical(); 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutHorizontal(); 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutVertical() { 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14571e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childTop; 14585b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childLeft; 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = mRight - mLeft; 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 14706a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int minorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14721e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio switch (majorGravity) { 14731e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.BOTTOM: 14741e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 14751e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop + mBottom - mTop - mTotalLength; 14761e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 14771e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 14781e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 14791e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_VERTICAL: 14801e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop + (mBottom - mTop - mTotalLength) / 2; 14811e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 14821e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 14831e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.TOP: 14841e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 14851e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop; 14861e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1488fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += measureNullChild(i); 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1504e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1505c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio final int absoluteGravity = Gravity.getAbsoluteGravity(gravity, layoutDirection); 1506de35ceeeb9f8855c72dfd70593e917aa75b43770Fabrice Di Meglio switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15151e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15161e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 1517611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 15181e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = paddingLeft + lp.leftMargin; 1519611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15211e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 1522696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1523696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childTop += mDividerHeight; 1524696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1525696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void layoutHorizontal() { 15451e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childTop; 15491e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childLeft; 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = mBottom - mTop; 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15606a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int majorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1568e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1569c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio switch (Gravity.getAbsoluteGravity(majorGravity, layoutDirection)) { 15701e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.RIGHT: 15711e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 15721e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft + mRight - mLeft - mTotalLength; 15731e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15741e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15751e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_HORIZONTAL: 15761e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 15771e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft + (mRight - mLeft - mTotalLength) / 2; 15781e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15791e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15801e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 15811e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 15821e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft; 15831e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15841e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio } 15851e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15861e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int start = 0; 15871e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int dir = 1; 15881e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio //In case of RTL, start drawing from the last child. 15891e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (isLayoutRtl) { 15901e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio start = count - 1; 15911e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio dir = -1; 1592fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1593fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 15951e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childIndex = start + dir * i; 15961e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final View child = getVirtualChildAt(childIndex); 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 15991e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft += measureNullChild(childIndex); 16009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 16079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1608980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (baselineAligned && lp.height != LayoutParams.MATCH_PARENT) { 16099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 16109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 16139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 16149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 16189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 16199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 16219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 16265b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // Removed support for baseline alignment when layout_gravity or 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 16289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 16309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 16349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 16379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 16389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 16399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1648611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1649611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childTop = paddingTop; 1650611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16531e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (hasDividerBeforeChildAt(childIndex)) { 1654696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childLeft += mDividerWidth; 1655696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1656696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 16609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 16619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16631e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio i += getChildrenSkipCount(child, childIndex); 16649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param orientation Pass HORIZONTAL or VERTICAL. Default 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * value is HORIZONTAL. 16769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOrientation(int orientation) { 16809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 16839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 16889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 16909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 16989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 17079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 17086a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) { 17099e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio gravity |= Gravity.START; 17109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 17236a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int gravity = horizontalGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 17246a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) != gravity) { 17256a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio mGravity = (mGravity & ~Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) | gravity; 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 1746980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 17479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 17489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 17499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 17549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 17559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 17569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 1757980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 17609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(p); 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 17699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 17719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 17729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17738a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 17748a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 17758a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 17768a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov super.onInitializeAccessibilityEvent(event); 17778a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov event.setClassName(LinearLayout.class.getName()); 17788a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 17798a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 17808a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 17818a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 17828a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov super.onInitializeAccessibilityNodeInfo(info); 17838a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov info.setClassName(LinearLayout.class.getName()); 17848a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 17858a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 17869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 17909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 17919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 17939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 17959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 17969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 17979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 17989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1799bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 18049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 18069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1807bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout", mapping = { 18089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 18099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 18109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 18119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 18129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 18139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 18149e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.IntToString(from = Gravity.START, to = "START"), 18159e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.IntToString(from = Gravity.END, to = "END"), 18169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 18179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 18209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 18219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 18229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 18239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 18249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 18299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 18309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 18319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 18329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 18349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 18359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 18439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 18449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 18459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 18499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1851980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param width the width, either {@link #MATCH_PARENT}, 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 1853980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param height the height, either {@link #MATCH_PARENT}, 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 18569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 18589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 18599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 18609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 18669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 18679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(MarginLayoutParams source) { 18739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 18749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 18789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 18799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 18809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1883