LinearLayout.java revision 8b9ed44f8d559be2590b25cb4b72d2aefd3b3784
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 21d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbyeimport android.annotation.IntDef; 2294a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamyimport android.annotation.NonNull; 233a1fa10e13f72396eb0d218ee4d7aad2a77134e3Scott Kennedyimport android.annotation.Nullable; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 26fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powellimport android.graphics.Canvas; 27fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powellimport android.graphics.drawable.Drawable; 2840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viveretteimport android.os.Build; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.Gravity; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 3494a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamyimport android.view.ViewHierarchyEncoder; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.RemoteViews.RemoteView; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbyeimport java.lang.annotation.Retention; 38d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbyeimport java.lang.annotation.RetentionPolicy; 39d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A Layout that arranges its children in a single column or a single row. The direction of 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the row can be set by calling {@link #setOrientation(int) setOrientation()}. 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You can also specify gravity, which specifies the alignment of all the child elements by 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * calling {@link #setGravity(int) setGravity()} or specify that specific children 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * grow to fill up any remaining space in the layout by setting the <em>weight</em> member of 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams}. 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The default orientation is horizontal. 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 504c359b76f9a030f92a302ba74a528faa170bad4eScott Main * <p>See the <a href="{@docRoot}guide/topics/ui/layout/linear.html">Linear Layout</a> 514c359b76f9a030f92a302ba74a528faa170bad4eScott Main * guide.</p> 5241ec65355bd6ded652769725b276d47c54a0d913Scott Main * 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Also see {@link LinearLayout.LayoutParams android.widget.LinearLayout.LayoutParams} 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes </p> 569295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 579295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAligned 589295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 599295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_gravity 609295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 619295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_orientation 629295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_weightSum 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project@RemoteView 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class LinearLayout extends ViewGroup { 66d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye /** @hide */ 67d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @IntDef({HORIZONTAL, VERTICAL}) 68d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @Retention(RetentionPolicy.SOURCE) 69d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public @interface OrientationMode {} 70d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int HORIZONTAL = 0; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int VERTICAL = 1; 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 74d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye /** @hide */ 75d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @IntDef(flag = true, 76d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye value = { 77d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_NONE, 78d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_BEGINNING, 79d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_MIDDLE, 80d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_END 81d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye }) 82d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @Retention(RetentionPolicy.SOURCE) 83d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public @interface DividerMode {} 84d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 86fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Don't show any dividers. 87fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 88fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_NONE = 0; 89fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 90fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the beginning of the group. 91fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 92fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_BEGINNING = 1; 93fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 94fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show dividers between each item in the group. 95fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 96fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_MIDDLE = 2; 97fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 98fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the end of the group. 99fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 100fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_END = 4; 101fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 102fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 10340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette * Compatibility check. Old versions of the platform would give different 10440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette * results from measurement passes using EXACTLY and non-EXACTLY modes, 10540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette * even when the resulting size was the same. 10640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette */ 10740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette private final boolean mAllowInconsistentMeasurement; 10840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 10940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette /** 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether the children of this layout are baseline aligned. Only applicable 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if {@link #mOrientation} is horizontal. 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 113bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mBaselineAligned = true; 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this layout is part of another layout that is baseline aligned, 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * use the child at this index as the baseline. 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note: this is orthogonal to {@link #mBaselineAligned}, which is concerned 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with whether the children of this layout are baseline aligned. 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 123bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 124c1f9c40c23a756a11394a35f37053f796494b224Karl Rosaen private int mBaselineAlignedChildIndex = -1; 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The additional offset to the child's baseline. 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * We'll calculate the baseline of this layout as we measure vertically; for 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * horizontal linear layouts, the offset of 0 is appropriate. 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 131bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBaselineChildTop = 0; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 134bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mOrientation; 136bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 137bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.ExportedProperty(category = "measurement", flagMapping = { 138bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = -1, 139bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = -1, name = "NONE"), 140bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.NO_GRAVITY, 141bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.NO_GRAVITY,name = "NONE"), 142bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.TOP, 143bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.TOP, name = "TOP"), 144bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.BOTTOM, 145bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.BOTTOM, name = "BOTTOM"), 146bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.LEFT, 147bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.LEFT, name = "LEFT"), 148bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.RIGHT, 149bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.RIGHT, name = "RIGHT"), 1509e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.START, 1519e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio equals = Gravity.START, name = "START"), 1529e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.END, 1539e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio equals = Gravity.END, name = "END"), 154bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER_VERTICAL, 155bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER_VERTICAL, name = "CENTER_VERTICAL"), 156bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL_VERTICAL, 157bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL_VERTICAL, name = "FILL_VERTICAL"), 158bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER_HORIZONTAL, 159bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER_HORIZONTAL, name = "CENTER_HORIZONTAL"), 160bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL_HORIZONTAL, 161bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL_HORIZONTAL, name = "FILL_HORIZONTAL"), 162bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER, 163bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER, name = "CENTER"), 164bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL, 165bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL, name = "FILL"), 166c46f7ffa9079f3ae8a5204e7519ed7a1250116d0Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.RELATIVE_LAYOUT_DIRECTION, 167c46f7ffa9079f3ae8a5204e7519ed7a1250116d0Fabrice Di Meglio equals = Gravity.RELATIVE_LAYOUT_DIRECTION, name = "RELATIVE") 1684597e9806948256e82b9f1cdaa7019cbbd912668Jon Miranda }, formatToHexString = true) 1699e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio private int mGravity = Gravity.START | Gravity.TOP; 170bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 171bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTotalLength; 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 174bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mWeightSum; 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 177bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1785b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private boolean mUseLargestChild; 1795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxAscent; 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxDescent; 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int VERTICAL_GRAVITY_COUNT = 4; 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_CENTER_VERTICAL = 0; 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_TOP = 1; 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_BOTTOM = 2; 1885b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private static final int INDEX_FILL = 3; 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 190fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private Drawable mDivider; 191fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerWidth; 192fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerHeight; 193fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mShowDividers; 194fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerPadding; 195fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 19678528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek private int mLayoutDirection = View.LAYOUT_DIRECTION_UNDEFINED; 19778528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context) { 199d6479ec5eec13914f656f6be996d95fe1610fd57Alan Viverette this(context, null); 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2023a1fa10e13f72396eb0d218ee4d7aad2a77134e3Scott Kennedy public LinearLayout(Context context, @Nullable AttributeSet attrs) { 2039295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy this(context, attrs, 0); 2049295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 2059295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 2063a1fa10e13f72396eb0d218ee4d7aad2a77134e3Scott Kennedy public LinearLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 207617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette this(context, attrs, defStyleAttr, 0); 208617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette } 209617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette 210617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette public LinearLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 211617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette super(context, attrs, defStyleAttr, defStyleRes); 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 213617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette final TypedArray a = context.obtainStyledAttributes( 214617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette attrs, com.android.internal.R.styleable.LinearLayout, defStyleAttr, defStyleRes); 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = a.getInt(com.android.internal.R.styleable.LinearLayout_orientation, -1); 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = a.getInt(com.android.internal.R.styleable.LinearLayout_gravity, -1); 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setGravity(index); 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean baselineAligned = a.getBoolean(R.styleable.LinearLayout_baselineAligned, true); 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!baselineAligned) { 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setBaselineAligned(baselineAligned); 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = a.getFloat(R.styleable.LinearLayout_weightSum, -1.0f); 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1); 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2369295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_measureWithLargestChild, false); 2375b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 238fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setDividerDrawable(a.getDrawable(R.styleable.LinearLayout_divider)); 239fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = a.getInt(R.styleable.LinearLayout_showDividers, SHOW_DIVIDER_NONE); 240fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerPadding = a.getDimensionPixelSize(R.styleable.LinearLayout_dividerPadding, 0); 241fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 24240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int version = context.getApplicationInfo().targetSdkVersion; 24340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mAllowInconsistentMeasurement = version <= Build.VERSION_CODES.M; 24440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2499df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * Returns <code>true</code> if this layout is currently configured to show at least one 2509df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * divider. 2519df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov */ 2529df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov private boolean isShowingDividers() { 2539df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov return (mShowDividers != SHOW_DIVIDER_NONE) && (mDivider != null); 2549df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov } 2559df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov 2569df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov /** 257fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set how dividers should be shown between items in this layout 258fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * 259fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING}, 2609df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END} 2619df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * to show dividers, or {@link #SHOW_DIVIDER_NONE} to show no dividers. 262fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 263d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public void setShowDividers(@DividerMode int showDividers) { 2649df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov if (showDividers == mShowDividers) { 2659df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov return; 266fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 267fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = showDividers; 2689df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov 2699df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov setWillNotDraw(!isShowingDividers()); 2709df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov requestLayout(); 271fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 272fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 273e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy @Override 274e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy public boolean shouldDelayChildPressedState() { 275e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy return false; 276e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy } 277e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy 278fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 279fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @return A flag set indicating how dividers should be shown around items. 280fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 281fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 282d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @DividerMode 283fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public int getShowDividers() { 284fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return mShowDividers; 285fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 286fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 287fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 2881018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @return the divider Drawable that will divide each item. 2891018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2901018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @see #setDividerDrawable(Drawable) 2911018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2921018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 2931018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne */ 2941018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne public Drawable getDividerDrawable() { 2951018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne return mDivider; 2961018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne } 2971018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne 2981018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne /** 299fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set a drawable to be used as a divider between items. 3001018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 301fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param divider Drawable that will divide each item. 3021018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 303fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 3041018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 3051018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 306fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 307fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setDividerDrawable(Drawable divider) { 308fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider == mDivider) { 309fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 310fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 311fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider = divider; 312fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider != null) { 313fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = divider.getIntrinsicWidth(); 314fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = divider.getIntrinsicHeight(); 315fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 316fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = 0; 317fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = 0; 318fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 3199df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov 3209df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov setWillNotDraw(!isShowingDividers()); 321fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 322fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 323fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 324696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 3259df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * Set padding displayed on both ends of dividers. For a vertical layout, the padding is applied 3269df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * to left and right end of dividers. For a horizontal layout, the padding is applied to top and 3279df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov * bottom end of dividers. 328696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 329696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param padding Padding value in pixels that will be applied to each end 330696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 331696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 332696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 333696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #getDividerPadding() 334696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 335696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public void setDividerPadding(int padding) { 3369df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov if (padding == mDividerPadding) { 3379df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov return; 3389df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov } 339696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell mDividerPadding = padding; 3409df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov 3419df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov if (isShowingDividers()) { 3429df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov requestLayout(); 3439df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov invalidate(); 3449df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov } 345696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 346696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 347696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 348696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Get the padding size used to inset dividers in pixels 349696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 350696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 351696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 352696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerPadding(int) 353696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 354696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public int getDividerPadding() { 355696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return mDividerPadding; 356696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 357696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 358640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell /** 359640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * Get the width of the current divider drawable. 360640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * 361640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * @hide Used internally by framework. 362640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell */ 363640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell public int getDividerWidth() { 364640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell return mDividerWidth; 365640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell } 366640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell 367fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell @Override 368fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell protected void onDraw(Canvas canvas) { 369fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mDivider == null) { 370fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 371fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 372fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 373fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mOrientation == VERTICAL) { 374fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersVertical(canvas); 375fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 376fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersHorizontal(canvas); 377fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 378fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 379fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 380fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersVertical(Canvas canvas) { 381fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 382fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 383fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 38435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 385696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 38635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 38720761fcdcd513a808e855708fe2e676e409beb36Vladimir Baryshnikov final int top = child.getTop() - lp.topMargin - mDividerHeight; 388fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 389fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 390fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 391fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 392fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 393696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 394ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu final View child = getLastNonGoneChild(); 39535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell int bottom = 0; 39635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 39735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = getHeight() - getPaddingBottom() - mDividerHeight; 39835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 39935aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 40035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = child.getBottom() + lp.bottomMargin; 40135aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 40235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell drawHorizontalDivider(canvas, bottom); 403fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 404fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 405fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 406ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu /** 407ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu * Finds the last child that is not gone. The last child will be used as the reference for 408ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu * where the end divider should be drawn. 409ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu */ 410ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu private View getLastNonGoneChild() { 411ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu for (int i = getVirtualChildCount() - 1; i >= 0; i--) { 412ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette final View child = getVirtualChildAt(i); 413ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu if (child != null && child.getVisibility() != GONE) { 414ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return child; 415ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 416ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 417ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return null; 418ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 419ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu 420fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersHorizontal(Canvas canvas) { 421fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 4224ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 423fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 424fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 42535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 426696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 42735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 4284ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final int position; 4294ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4304ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 4314ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4324ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 4334ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 4344ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 435fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 436fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 437fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 438fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 439696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 440ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu final View child = getLastNonGoneChild(); 4414ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio int position; 44235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 4434ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4444ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getPaddingLeft(); 4454ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4464ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getWidth() - getPaddingRight() - mDividerWidth; 4474ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 44835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 44935aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 4504ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4514ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 4524ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4534ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 4544ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 45535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 4564ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 457fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 458fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 459fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 460fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawHorizontalDivider(Canvas canvas, int top) { 461fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(getPaddingLeft() + mDividerPadding, top, 462fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight); 463fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 464fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 465fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 466fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawVerticalDivider(Canvas canvas, int left) { 467fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(left, getPaddingTop() + mDividerPadding, 468fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding); 469fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 470fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 471fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 472fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4969295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4979295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When true, all children with a weight will be considered having 4989295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4999295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 5009295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 5019295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @return True to measure children with a weight using the minimum 5029295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * size of the largest child, false otherwise. 5031018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 5041018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 5059295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 5069295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public boolean isMeasureWithLargestChildEnabled() { 5079295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy return mUseLargestChild; 5089295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 5099295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 5109295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 5119295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When set to true, all children with a weight will be considered having 5129295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 5139295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 5149295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 5159295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * Disabled by default. 5169295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 5179295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @param enabled True to measure children with a weight using the 5189295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * minimum size of the largest child, false otherwise. 5191018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 5201018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 5219295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 5229295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy @android.view.RemotableViewMethod 5239295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public void setMeasureWithLargestChildEnabled(boolean enabled) { 5249295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = enabled; 5259295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 5269295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 611ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette * @return the child at the specified index, may be {@code null} 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 613ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette @Nullable 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 669696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Determines where to position dividers between children. 670696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 671696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param childIndex Index of child to check for preceding divider 672696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @return true if there should be a divider before the child at childIndex 673696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @hide Pending API consideration. Currently only used internally by the system. 674696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 675696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell protected boolean hasDividerBeforeChildAt(int childIndex) { 676ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu if (childIndex == getVirtualChildCount()) { 677ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu // Check whether the end divider should draw. 678696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_END) != 0; 679ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 680ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu boolean allViewsAreGoneBefore = allViewsAreGoneBefore(childIndex); 681ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu if (allViewsAreGoneBefore) { 682ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu // This is the first view that's not gone, check if beginning divider is enabled. 683ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0; 684ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } else { 685ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return (mShowDividers & SHOW_DIVIDER_MIDDLE) != 0; 686ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 687ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 688ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu 689ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu /** 690ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu * Checks whether all (virtual) child views before the given index are gone. 691ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu */ 692ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu private boolean allViewsAreGoneBefore(int childIndex) { 693ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu for (int i = childIndex - 1; i >= 0; i--) { 694ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette final View child = getVirtualChildAt(i); 695f102d4266be803e16543c81df6f380bd4c447c86Doris Liu if (child != null && child.getVisibility() != GONE) { 696ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return false; 697bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } 698696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 699ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return true; 700696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 701696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 702696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 716189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 72865be9cc34c1619d3ba71726c821820f394b694abAlan Viverette boolean skippedMeasure = false; 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 7315b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 7325b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7335b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildHeight = Integer.MIN_VALUE; 73440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette int consumedExcessSpace = 0; 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7369df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov int nonSkippedChildCount = 0; 7379df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7519df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov nonSkippedChildCount++; 752696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 753fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 754fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 755fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 75640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 75761c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette 75861c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette totalWeight += lp.weight; 75940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 76040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final boolean useExcessSpace = lp.height == 0 && lp.weight > 0; 76140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (heightMode == MeasureSpec.EXACTLY && useExcessSpace) { 76240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Optimization: don't bother measuring children who are only 76340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // laid out using excess space. These views will get measured 76440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // later if we have space to distribute. 765053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 766053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + lp.topMargin + lp.bottomMargin); 76765be9cc34c1619d3ba71726c821820f394b694abAlan Viverette skippedMeasure = true; 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 76940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 77040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // The heightMode is either UNSPECIFIED or AT_MOST, and 77140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // this child is only laid out using excess space. Measure 77240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // using WRAP_CONTENT so that we can find out the view's 77340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // optimal height. We'll restore the original height of 0 77440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // after measurement. 775f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne lp.height = LayoutParams.WRAP_CONTENT; 7765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 778f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Determine how big this child would like to be. If this or 7795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // previous children have given a weight, then we allow it to 7805b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // use all available space (and we will shrink things later 7815b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // if needed). 78240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int usedHeight = totalWeight == 0 ? mTotalLength : 0; 78340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette measureChildBeforeLayout(child, i, widthMeasureSpec, 0, 78440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette heightMeasureSpec, usedHeight); 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 78640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeight = child.getMeasuredHeight(); 78740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 78840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Restore the original height and record how much space 78940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // we've allocated to excess-only children so that we can 79040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // match the behavior of EXACTLY measurement. 79140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette lp.height = 0; 79240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette consumedExcessSpace += childHeight; 7935b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 795053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 796053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childHeight + lp.topMargin + 797053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.bottomMargin + getNextLocationOffset(child)); 7985b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7995b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 8005b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildHeight = Math.max(childHeight, largestChildHeight); 8015b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 823980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.MATCH_PARENT) { 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 835189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 837980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8525b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8539df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov if (nonSkippedChildCount > 0 && hasDividerBeforeChildAt(count)) { 854fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 855fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 856fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 857f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 858f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (heightMode == MeasureSpec.AT_MOST || heightMode == MeasureSpec.UNSPECIFIED)) { 8595b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 8605b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8615b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 8625b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 8635b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 8645b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 8655b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 8665b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8675b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8685b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 8695b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 8705b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 8715b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8725b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8735b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 8745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 875053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // Account for negative margins 876053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 877053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildHeight + 878053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 8795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8805b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8815b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 891189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int heightSizeAndState = resolveSizeAndState(heightSize, heightMeasureSpec, 0); 892189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSize = heightSizeAndState & MEASURED_SIZE_MASK; 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 89465be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // shrink them if they extend beyond our current bounds. If we skipped 89565be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // measurement on any children, we need to measure them now. 896918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette int remainingExcess = heightSize - mTotalLength 89740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + (mAllowInconsistentMeasurement ? 0 : consumedExcessSpace); 898918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (skippedMeasure || remainingExcess != 0 && totalWeight > 0.0f) { 899918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette float remainingWeightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 90540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (child == null || child.getVisibility() == View.GONE) { 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9085a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette 90940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 910918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette final float childWeight = lp.weight; 911918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (childWeight > 0) { 91261c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette final int share = (int) (childWeight * remainingExcess / remainingWeightSum); 913918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingExcess -= share; 914918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingWeightSum -= childWeight; 915918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette 91640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeight; 917070b22bdeebfc3b69b38fe30df0f026e628e847bAlan Viverette if (mUseLargestChild && heightMode != MeasureSpec.EXACTLY) { 918070b22bdeebfc3b69b38fe30df0f026e628e847bAlan Viverette childHeight = largestChildHeight; 919070b22bdeebfc3b69b38fe30df0f026e628e847bAlan Viverette } else if (lp.height == 0 && (!mAllowInconsistentMeasurement 92040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette || heightMode == MeasureSpec.EXACTLY)) { 92140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child needs to be laid out from scratch using 92240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // only its share of excess space. 92340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childHeight = share; 9245a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette } else { 92540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child had some intrinsic height to which we 92640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // need to add its share of excess space. 92740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childHeight = child.getMeasuredHeight() + share; 9285a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette } 929189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 93040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeightMeasureSpec = MeasureSpec.makeMeasureSpec( 93140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette Math.max(0, childHeight), MeasureSpec.EXACTLY); 93240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 93340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mPaddingLeft + mPaddingRight + lp.leftMargin + lp.rightMargin, 93440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette lp.width); 93540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette child.measure(childWidthMeasureSpec, childHeightMeasureSpec); 93640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 937189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in vertical dimension. 938189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState() 939189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT)); 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 947980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.width == LayoutParams.MATCH_PARENT; 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 952980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 954053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 955053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredHeight() + 956053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 960053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength += mPaddingTop + mPaddingBottom; 961053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we recompute the heightSpec based on the new total length? 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 965f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 966f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 967f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as tall as the largest child. 968f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 969eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && heightMode != MeasureSpec.EXACTLY) { 970f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 971f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 972f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 973f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 974f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 975f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 976f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 977f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 978f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 979f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 980f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 981f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 982f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredWidth(), 983f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY), 984f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildHeight, 985f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 986f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 987f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 988f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1000189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState), 1001189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSizeAndState); 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 1014ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette if (child != null && child.getVisibility() != GONE) { 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1017980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.width == LayoutParams.MATCH_PARENT) { 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 1045189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 105765be9cc34c1619d3ba71726c821820f394b694abAlan Viverette boolean skippedMeasure = false; 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 10715b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 1072c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy 1073c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final boolean isExactly = widthMode == MeasureSpec.EXACTLY; 10745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildWidth = Integer.MIN_VALUE; 107640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette int usedExcessSpace = 0; 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10789df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov int nonSkippedChildCount = 0; 10799df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10939df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov nonSkippedChildCount++; 1094696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1095fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1096fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1097fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 109840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 109961c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette 110061c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette totalWeight += lp.weight; 110140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 110240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final boolean useExcessSpace = lp.width == 0 && lp.weight > 0; 110340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (widthMode == MeasureSpec.EXACTLY && useExcessSpace) { 110440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Optimization: don't bother measuring children who are only 110540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // laid out using excess space. These views will get measured 110640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // later if we have space to distribute. 1107c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1108c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += lp.leftMargin + lp.rightMargin; 1109c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1110c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1111c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + 1112c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin); 1113c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 11166c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // baseline offset (in particular for TextViews). The following 11176c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // defeats the optimization mentioned above. Allow the child to 11186c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // use as much space as it wants because we can shrink things 11196c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // later (and re-measure). 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 1121d5dbf4b2a09c9cf2d17fa6af3fdf75d1fb774056Adam Powell final int freeWidthSpec = MeasureSpec.makeSafeMeasureSpec( 1122b6824bf58a0cd34395993fa204217e8e246de6fbFilip Gruszczynski MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.UNSPECIFIED); 1123d5dbf4b2a09c9cf2d17fa6af3fdf75d1fb774056Adam Powell final int freeHeightSpec = MeasureSpec.makeSafeMeasureSpec( 1124b6824bf58a0cd34395993fa204217e8e246de6fbFilip Gruszczynski MeasureSpec.getSize(heightMeasureSpec), MeasureSpec.UNSPECIFIED); 1125b6824bf58a0cd34395993fa204217e8e246de6fbFilip Gruszczynski child.measure(freeWidthSpec, freeHeightSpec); 112665be9cc34c1619d3ba71726c821820f394b694abAlan Viverette } else { 112765be9cc34c1619d3ba71726c821820f394b694abAlan Viverette skippedMeasure = true; 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 113040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 113140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // The widthMode is either UNSPECIFIED or AT_MOST, and 113240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // this child is only laid out using excess space. Measure 113340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // using WRAP_CONTENT so that we can find out the view's 113440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // optimal width. We'll restore the original width of 0 113540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // after measurement. 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 114340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int usedWidth = totalWeight == 0 ? mTotalLength : 0; 114440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette measureChildBeforeLayout(child, i, widthMeasureSpec, usedWidth, 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 114740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidth = child.getMeasuredWidth(); 114840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 114940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Restore the original width and record how much space 115040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // we've allocated to excess-only children so that we can 115140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // match the behavior of EXACTLY measurement. 115240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette lp.width = 0; 115340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette usedExcessSpace += childWidth; 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1156c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 115740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mTotalLength += childWidth + lp.leftMargin + lp.rightMargin 115840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + getNextLocationOffset(child); 1159c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1160c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 116140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mTotalLength = Math.max(totalLength, totalLength + childWidth + lp.leftMargin 116240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + lp.rightMargin + getNextLocationOffset(child)); 1163c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11645b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11655b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 11665b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildWidth = Math.max(childWidth, largestChildWidth); 11675b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 1171980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.MATCH_PARENT) { 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 1181189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1200980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12169df0846498b2be2e03c487d0dba73c1d7c20f39cKirill Grouchnikov if (nonSkippedChildCount > 0 && hasDividerBeforeChildAt(count)) { 1217fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1218fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1219fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1235f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 1236f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.UNSPECIFIED)) { 12375b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 12385b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12395b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 12405b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 12415b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 12425b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 12435b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 12445b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12455b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12465b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 12475b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 12485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 12495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12505b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12515b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 12525b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1253c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1254c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += largestChildWidth + lp.leftMargin + lp.rightMargin + 1255c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1256c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1257c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1258c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildWidth + 1259c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1260c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 12615b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12625b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12635b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 1273189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int widthSizeAndState = resolveSizeAndState(widthSize, widthMeasureSpec, 0); 1274189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize = widthSizeAndState & MEASURED_SIZE_MASK; 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 127765be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // shrink them if they extend beyond our current bounds. If we skipped 127865be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // measurement on any children, we need to measure them now. 1279918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette int remainingExcess = widthSize - mTotalLength 128040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + (mAllowInconsistentMeasurement ? 0 : usedExcessSpace); 1281918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (skippedMeasure || remainingExcess != 0 && totalWeight > 0.0f) { 1282918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette float remainingWeightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 129640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 1297918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette final float childWeight = lp.weight; 1298918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (childWeight > 0) { 129961c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette final int share = (int) (childWeight * remainingExcess / remainingWeightSum); 1300918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingExcess -= share; 1301918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingWeightSum -= childWeight; 1302918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette 130340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidth; 1304070b22bdeebfc3b69b38fe30df0f026e628e847bAlan Viverette if (mUseLargestChild && widthMode != MeasureSpec.EXACTLY) { 1305070b22bdeebfc3b69b38fe30df0f026e628e847bAlan Viverette childWidth = largestChildWidth; 1306070b22bdeebfc3b69b38fe30df0f026e628e847bAlan Viverette } else if (lp.width == 0 && (!mAllowInconsistentMeasurement 130740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette || widthMode == MeasureSpec.EXACTLY)) { 130840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child needs to be laid out from scratch using 130940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // only its share of excess space. 131040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childWidth = share; 131140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette } else { 131240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child had some intrinsic width to which we 131340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // need to add its share of excess space. 131440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childWidth = child.getMeasuredWidth() + share; 131540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette } 13165a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette 131740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec( 131840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette Math.max(0, childWidth), MeasureSpec.EXACTLY); 131940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeightMeasureSpec = getChildMeasureSpec(heightMeasureSpec, 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 132240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette child.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1323189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 1324189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in horizontal dimension. 1325189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, 1326189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn child.getMeasuredState() & MEASURED_STATE_MASK); 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1329c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1330c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin + 1331c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1332c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1333c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1334c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredWidth() + 1335c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1336c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 1339980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.height == LayoutParams.MATCH_PARENT; 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1347980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 1367053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we update widthSize with the new total length? 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 1385f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1386f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as wide as the largest child. 1387f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 1388eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && widthMode != MeasureSpec.EXACTLY) { 1389f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 1390f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 1391f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 1392f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 1393f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1394f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1395f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 1396f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 1397f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1398f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 1399f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 1400f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 1401f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildWidth, MeasureSpec.EXACTLY), 1402f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredHeight(), 1403f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 1404f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1405f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1406f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1418189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSizeAndState | (childState&MEASURED_STATE_MASK), 1419189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn resolveSizeAndState(maxHeight, heightMeasureSpec, 1420189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn (childState<<MEASURED_HEIGHT_STATE_SHIFT))); 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 1430fc53e584d3d6ae106752cce334f143a68eb161bdFabrice Di Meglio // to accommodate the heightMeasureSpec from the parent 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 1435ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette if (child != null && child.getVisibility() != GONE) { 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1438980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.height == LayoutParams.MATCH_PARENT) { 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the size offset of the next sibling of the specified child. 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 1521ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne layoutVertical(l, t, r, b); 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1523ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne layoutHorizontal(l, t, r, b); 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 1534ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param left 1535ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param top 1536ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param right 1537ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param bottom 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1539ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne void layoutVertical(int left, int top, int right, int bottom) { 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15421e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childTop; 15435b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childLeft; 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 1546ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne final int width = right - left; 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 15556a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int minorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15571e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio switch (majorGravity) { 15581e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.BOTTOM: 15591e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1560ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childTop = mPaddingTop + bottom - top - mTotalLength; 15611e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15621e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15631e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 15641e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_VERTICAL: 1565ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childTop = mPaddingTop + (bottom - top - mTotalLength) / 2; 15661e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15671e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15681e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.TOP: 15691e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 15701e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop; 15711e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1573fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 15759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 15769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 15779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += measureNullChild(i); 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 15799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 15809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 15849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1589e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1590c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio final int absoluteGravity = Gravity.getAbsoluteGravity(gravity, layoutDirection); 1591de35ceeeb9f8855c72dfd70593e917aa75b43770Fabrice Di Meglio switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 15959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16001e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16011e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 1602611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 16031e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = paddingLeft + lp.leftMargin; 1604611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16061e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 1607696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1608696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childTop += mDividerHeight; 1609696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1610696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 16119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 16129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 16139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 16149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 162178528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek @Override 162278528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek public void onRtlPropertiesChanged(@ResolvedLayoutDir int layoutDirection) { 162378528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek super.onRtlPropertiesChanged(layoutDirection); 162478528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek if (layoutDirection != mLayoutDirection) { 162578528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek mLayoutDirection = layoutDirection; 162678528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek if (mOrientation == HORIZONTAL) { 162778528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek requestLayout(); 162878528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek } 162978528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek } 163078528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek } 163178528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 16349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 16379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 16389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 1639ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param left 1640ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param top 1641ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param right 1642ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param bottom 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1644ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne void layoutHorizontal(int left, int top, int right, int bottom) { 16451e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childTop; 16491e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childLeft; 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 1652ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne final int height = bottom - top; 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16606a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int majorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 16619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 16649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1668e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1669c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio switch (Gravity.getAbsoluteGravity(majorGravity, layoutDirection)) { 16701e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.RIGHT: 16711e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1672ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childLeft = mPaddingLeft + right - left - mTotalLength; 16731e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16741e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16751e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_HORIZONTAL: 16761e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1677ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childLeft = mPaddingLeft + (right - left - mTotalLength) / 2; 16781e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16791e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16801e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 16811e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 16821e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft; 16831e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16841e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio } 16851e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16861e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int start = 0; 16871e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int dir = 1; 16881e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio //In case of RTL, start drawing from the last child. 16891e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (isLayoutRtl) { 16901e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio start = count - 1; 16911e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio dir = -1; 1692fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1693fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 1695ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette final int childIndex = start + dir * i; 16961e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final View child = getVirtualChildAt(childIndex); 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 16981e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft += measureNullChild(childIndex); 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1707980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (baselineAligned && lp.height != LayoutParams.MATCH_PARENT) { 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 17099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 17189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 17255b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // Removed support for baseline alignment when layout_gravity or 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1747611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1748611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childTop = paddingTop; 1749611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17521e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (hasDividerBeforeChildAt(childIndex)) { 1753696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childLeft += mDividerWidth; 1754696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1755696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 17569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 17579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 17599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 17609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 17619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17621e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio i += getChildrenSkipCount(child, childIndex); 17639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 17689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 17699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 1773d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye * @param orientation Pass {@link #HORIZONTAL} or {@link #VERTICAL}. Default 1774d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye * value is {@link #HORIZONTAL}. 17759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 17779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1778d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public void setOrientation(@OrientationMode int orientation) { 17799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 17809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 17819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1790d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @OrientationMode 17919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 17929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 17939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 17979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 17989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 17999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 18029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 18049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 18069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 18079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 18086a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) { 18099e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio gravity |= Gravity.START; 18109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 18139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 18149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 18179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1821efe916c3c795b680152d229fd937cf112cf28086Jason Monk /** 1822efe916c3c795b680152d229fd937cf112cf28086Jason Monk * Returns the current gravity. See {@link android.view.Gravity} 1823efe916c3c795b680152d229fd937cf112cf28086Jason Monk * 1824efe916c3c795b680152d229fd937cf112cf28086Jason Monk * @return the current gravity. 1825efe916c3c795b680152d229fd937cf112cf28086Jason Monk * @see #setGravity 1826efe916c3c795b680152d229fd937cf112cf28086Jason Monk */ 1827efe916c3c795b680152d229fd937cf112cf28086Jason Monk public int getGravity() { 1828efe916c3c795b680152d229fd937cf112cf28086Jason Monk return mGravity; 1829efe916c3c795b680152d229fd937cf112cf28086Jason Monk } 1830efe916c3c795b680152d229fd937cf112cf28086Jason Monk 18319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 18329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 18336a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int gravity = horizontalGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 18346a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) != gravity) { 18356a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio mGravity = (mGravity & ~Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) | gravity; 18369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 18429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 18439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 18449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 18459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 18469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 18519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 1856980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 18589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 18599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 18609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 18619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 18649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 18659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 18669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 1867980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 18689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 18709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1873885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams lp) { 18742dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar if (sPreserveMarginParamsInLayoutParamConversion) { 18752dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar if (lp instanceof LayoutParams) { 18762dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar return new LayoutParams((LayoutParams) lp); 18772dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar } else if (lp instanceof MarginLayoutParams) { 18782dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar return new LayoutParams((MarginLayoutParams) lp); 18792dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar } 1880885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar } 18812dd20a61e959f9a0acb0639664e063101b6e3bacYigit Boyar return new LayoutParams(lp); 18829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 18869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 18889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 18899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18908a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 18918a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 1892a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn public CharSequence getAccessibilityClassName() { 1893a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn return LinearLayout.class.getName(); 18948a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 18958a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 189694a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy /** @hide */ 189794a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy @Override 189894a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy protected void encodeProperties(@NonNull ViewHierarchyEncoder encoder) { 189994a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy super.encodeProperties(encoder); 190094a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:baselineAligned", mBaselineAligned); 190194a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:baselineAlignedChildIndex", mBaselineAlignedChildIndex); 190294a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:baselineChildTop", mBaselineChildTop); 190394a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:orientation", mOrientation); 190494a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:gravity", mGravity); 190594a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:totalLength", mTotalLength); 190694a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:totalLength", mTotalLength); 190794a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:useLargestChild", mUseLargestChild); 190894a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy } 190994a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy 19109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 19129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 19139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 19149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 19159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 19179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 19199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 19209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 19219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 19229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1923bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 19249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 19259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 19289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 19299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 19309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1931bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout", mapping = { 19329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 19339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 19349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 19359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 19369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 19379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 19388b9ed44f8d559be2590b25cb4b72d2aefd3b3784Chet Haase @ViewDebug.IntToString(from = Gravity.START, to = "START"), 19398b9ed44f8d559be2590b25cb4b72d2aefd3b3784Chet Haase @ViewDebug.IntToString(from = Gravity.END, to = "END"), 19409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 19419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 19429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 19439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 19449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 19459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 19469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 19479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 19489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 19539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 19549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 19559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 19569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 19589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 19599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 19619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 19679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 19689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 19699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 19739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 19749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1975980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param width the width, either {@link #MATCH_PARENT}, 19769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 1977980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param height the height, either {@link #MATCH_PARENT}, 19789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 19799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 19809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 19829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 19839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 19849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 19909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 19919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19960a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette public LayoutParams(ViewGroup.MarginLayoutParams source) { 19979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 19989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20000a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette /** 20010a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * Copy constructor. Clones the width, height, margin values, weight, 20020a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * and gravity of the source. 20030a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * 20040a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * @param source The layout params to copy from. 20050a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette */ 20060a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette public LayoutParams(LayoutParams source) { 20070a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette super(source); 20080a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette 20090a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette this.weight = source.weight; 20100a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette this.gravity = source.gravity; 20110a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette } 20120a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette 20139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 20159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 20169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 20179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 201894a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy 201994a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy /** @hide */ 202094a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy @Override 202194a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy protected void encodeProperties(@NonNull ViewHierarchyEncoder encoder) { 202294a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy super.encodeProperties(encoder); 202394a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy 202494a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:weight", weight); 202594a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:gravity", gravity); 202694a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy } 20279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 2029