LinearLayout.java revision 61c41bf6175222c265973b5fb0063b3e3c5d02c8
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 /** 249fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set how dividers should be shown between items in this layout 250fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * 251fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING}, 252fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END}, 253fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * or {@link #SHOW_DIVIDER_NONE} to show no dividers. 254fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 255d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public void setShowDividers(@DividerMode int showDividers) { 256fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividers != mShowDividers) { 257fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 258fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 259fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = showDividers; 260fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 261fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 262e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy @Override 263e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy public boolean shouldDelayChildPressedState() { 264e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy return false; 265e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy } 266e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy 267fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 268fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @return A flag set indicating how dividers should be shown around items. 269fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 270fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 271d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @DividerMode 272fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public int getShowDividers() { 273fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return mShowDividers; 274fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 275fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 276fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 2771018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @return the divider Drawable that will divide each item. 2781018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2791018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @see #setDividerDrawable(Drawable) 2801018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2811018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 2821018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne */ 2831018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne public Drawable getDividerDrawable() { 2841018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne return mDivider; 2851018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne } 2861018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne 2871018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne /** 288fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set a drawable to be used as a divider between items. 2891018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 290fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param divider Drawable that will divide each item. 2911018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 292fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 2931018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2941018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 295fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 296fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setDividerDrawable(Drawable divider) { 297fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider == mDivider) { 298fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 299fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 300fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider = divider; 301fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider != null) { 302fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = divider.getIntrinsicWidth(); 303fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = divider.getIntrinsicHeight(); 304fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 305fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = 0; 306fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = 0; 307fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 308fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setWillNotDraw(divider == null); 309fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 310fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 311fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 312696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 313696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Set padding displayed on both ends of dividers. 314696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 315696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param padding Padding value in pixels that will be applied to each end 316696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 317696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 318696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 319696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #getDividerPadding() 320696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 321696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public void setDividerPadding(int padding) { 322696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell mDividerPadding = padding; 323696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 324696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 325696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 326696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Get the padding size used to inset dividers in pixels 327696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 328696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 329696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 330696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerPadding(int) 331696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 332696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public int getDividerPadding() { 333696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return mDividerPadding; 334696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 335696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 336640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell /** 337640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * Get the width of the current divider drawable. 338640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * 339640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * @hide Used internally by framework. 340640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell */ 341640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell public int getDividerWidth() { 342640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell return mDividerWidth; 343640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell } 344640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell 345fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell @Override 346fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell protected void onDraw(Canvas canvas) { 347fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mDivider == null) { 348fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 349fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 350fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 351fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mOrientation == VERTICAL) { 352fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersVertical(canvas); 353fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 354fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersHorizontal(canvas); 355fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 356fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 357fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 358fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersVertical(Canvas canvas) { 359fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 360fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 361fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 36235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 363696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 36435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 36520761fcdcd513a808e855708fe2e676e409beb36Vladimir Baryshnikov final int top = child.getTop() - lp.topMargin - mDividerHeight; 366fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 367fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 368fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 369fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 370fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 371696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 372ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu final View child = getLastNonGoneChild(); 37335aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell int bottom = 0; 37435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 37535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = getHeight() - getPaddingBottom() - mDividerHeight; 37635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 37735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 37835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = child.getBottom() + lp.bottomMargin; 37935aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 38035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell drawHorizontalDivider(canvas, bottom); 381fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 382fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 383fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 384ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu /** 385ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu * Finds the last child that is not gone. The last child will be used as the reference for 386ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu * where the end divider should be drawn. 387ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu */ 388ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu private View getLastNonGoneChild() { 389ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu for (int i = getVirtualChildCount() - 1; i >= 0; i--) { 390ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette final View child = getVirtualChildAt(i); 391ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu if (child != null && child.getVisibility() != GONE) { 392ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return child; 393ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 394ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 395ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return null; 396ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 397ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu 398fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersHorizontal(Canvas canvas) { 399fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 4004ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 401fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 402fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 40335aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 404696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 40535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 4064ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final int position; 4074ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4084ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 4094ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4104ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 4114ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 4124ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 413fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 414fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 415fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 416fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 417696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 418ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu final View child = getLastNonGoneChild(); 4194ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio int position; 42035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 4214ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4224ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getPaddingLeft(); 4234ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4244ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getWidth() - getPaddingRight() - mDividerWidth; 4254ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 42635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 42735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 4284ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4294ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 4304ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4314ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 4324ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 43335aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 4344ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 435fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 436fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 437fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 438fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawHorizontalDivider(Canvas canvas, int top) { 439fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(getPaddingLeft() + mDividerPadding, top, 440fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight); 441fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 442fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 443fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 444fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawVerticalDivider(Canvas canvas, int left) { 445fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(left, getPaddingTop() + mDividerPadding, 446fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding); 447fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 448fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 449fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 450fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4749295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4759295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When true, all children with a weight will be considered having 4769295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4779295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 4789295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4799295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @return True to measure children with a weight using the minimum 4809295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * size of the largest child, false otherwise. 4811018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 4821018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 4839295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 4849295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public boolean isMeasureWithLargestChildEnabled() { 4859295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy return mUseLargestChild; 4869295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 4879295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 4889295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4899295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When set to true, all children with a weight will be considered having 4909295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4919295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 4929295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4939295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * Disabled by default. 4949295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4959295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @param enabled True to measure children with a weight using the 4969295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * minimum size of the largest child, false otherwise. 4971018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 4981018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 4999295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 5009295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy @android.view.RemotableViewMethod 5019295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public void setMeasureWithLargestChildEnabled(boolean enabled) { 5029295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = enabled; 5039295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 5049295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 589ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette * @return the child at the specified index, may be {@code null} 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 591ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette @Nullable 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 647696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Determines where to position dividers between children. 648696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 649696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param childIndex Index of child to check for preceding divider 650696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @return true if there should be a divider before the child at childIndex 651696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @hide Pending API consideration. Currently only used internally by the system. 652696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 653696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell protected boolean hasDividerBeforeChildAt(int childIndex) { 654ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu if (childIndex == getVirtualChildCount()) { 655ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu // Check whether the end divider should draw. 656696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_END) != 0; 657ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 658ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu boolean allViewsAreGoneBefore = allViewsAreGoneBefore(childIndex); 659ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu if (allViewsAreGoneBefore) { 660ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu // This is the first view that's not gone, check if beginning divider is enabled. 661ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0; 662ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } else { 663ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return (mShowDividers & SHOW_DIVIDER_MIDDLE) != 0; 664ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 665ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu } 666ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu 667ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu /** 668ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu * Checks whether all (virtual) child views before the given index are gone. 669ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu */ 670ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu private boolean allViewsAreGoneBefore(int childIndex) { 671ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu for (int i = childIndex - 1; i >= 0; i--) { 672ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette final View child = getVirtualChildAt(i); 673f102d4266be803e16543c81df6f380bd4c447c86Doris Liu if (child != null && child.getVisibility() != GONE) { 674ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return false; 675bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } 676696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 677ec6a4cdedab7faaf933dbbd86f7f74c7bd856bafDoris Liu return true; 678696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 679696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 680696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 694189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 70665be9cc34c1619d3ba71726c821820f394b694abAlan Viverette boolean skippedMeasure = false; 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 7095b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 7105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7115b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildHeight = Integer.MIN_VALUE; 71240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette int consumedExcessSpace = 0; 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 727696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 728fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 729fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 730fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 73140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 73261c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette 73361c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette totalWeight += lp.weight; 73440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 73540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final boolean useExcessSpace = lp.height == 0 && lp.weight > 0; 73640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (heightMode == MeasureSpec.EXACTLY && useExcessSpace) { 73740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Optimization: don't bother measuring children who are only 73840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // laid out using excess space. These views will get measured 73940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // later if we have space to distribute. 740053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 741053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + lp.topMargin + lp.bottomMargin); 74265be9cc34c1619d3ba71726c821820f394b694abAlan Viverette skippedMeasure = true; 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 74440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 74540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // The heightMode is either UNSPECIFIED or AT_MOST, and 74640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // this child is only laid out using excess space. Measure 74740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // using WRAP_CONTENT so that we can find out the view's 74840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // optimal height. We'll restore the original height of 0 74940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // after measurement. 750f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne lp.height = LayoutParams.WRAP_CONTENT; 7515b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 753f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Determine how big this child would like to be. If this or 7545b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // previous children have given a weight, then we allow it to 7555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // use all available space (and we will shrink things later 7565b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // if needed). 75740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int usedHeight = totalWeight == 0 ? mTotalLength : 0; 75840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette measureChildBeforeLayout(child, i, widthMeasureSpec, 0, 75940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette heightMeasureSpec, usedHeight); 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 76140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeight = child.getMeasuredHeight(); 76240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 76340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Restore the original height and record how much space 76440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // we've allocated to excess-only children so that we can 76540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // match the behavior of EXACTLY measurement. 76640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette lp.height = 0; 76740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette consumedExcessSpace += childHeight; 7685b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 770053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 771053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childHeight + lp.topMargin + 772053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.bottomMargin + getNextLocationOffset(child)); 7735b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 7755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildHeight = Math.max(childHeight, largestChildHeight); 7765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 798980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.MATCH_PARENT) { 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 810189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 812980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8275b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 828696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 829fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 830fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 831fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 832f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 833f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (heightMode == MeasureSpec.AT_MOST || heightMode == MeasureSpec.UNSPECIFIED)) { 8345b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 8355b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8365b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 8375b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 8385b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 8395b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 8405b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 8415b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8425b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8435b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 8445b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 8455b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 8465b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8475b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 8495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 850053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // Account for negative margins 851053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 852053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildHeight + 853053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 8545b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8555b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8565b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 866189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int heightSizeAndState = resolveSizeAndState(heightSize, heightMeasureSpec, 0); 867189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSize = heightSizeAndState & MEASURED_SIZE_MASK; 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 87065be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // shrink them if they extend beyond our current bounds. If we skipped 87165be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // measurement on any children, we need to measure them now. 872918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette int remainingExcess = heightSize - mTotalLength 87340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + (mAllowInconsistentMeasurement ? 0 : consumedExcessSpace); 874918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (skippedMeasure || remainingExcess != 0 && totalWeight > 0.0f) { 875918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette float remainingWeightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 88140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (child == null || child.getVisibility() == View.GONE) { 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8845a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette 88540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 886918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette final float childWeight = lp.weight; 887918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (childWeight > 0) { 88861c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette final int share = (int) (childWeight * remainingExcess / remainingWeightSum); 889918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingExcess -= share; 890918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingWeightSum -= childWeight; 891918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette 89240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeight; 89340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (lp.height == 0 && (!mAllowInconsistentMeasurement 89440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette || heightMode == MeasureSpec.EXACTLY)) { 89540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child needs to be laid out from scratch using 89640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // only its share of excess space. 89740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childHeight = share; 8985a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette } else { 89940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child had some intrinsic height to which we 90040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // need to add its share of excess space. 90140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childHeight = child.getMeasuredHeight() + share; 9025a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette } 903189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 90440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeightMeasureSpec = MeasureSpec.makeMeasureSpec( 90540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette Math.max(0, childHeight), MeasureSpec.EXACTLY); 90640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 90740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mPaddingLeft + mPaddingRight + lp.leftMargin + lp.rightMargin, 90840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette lp.width); 90940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette child.measure(childWidthMeasureSpec, childHeightMeasureSpec); 91040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 911189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in vertical dimension. 912189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState() 913189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT)); 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 921980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.width == LayoutParams.MATCH_PARENT; 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 926980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 928053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 929053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredHeight() + 930053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 934053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength += mPaddingTop + mPaddingBottom; 935053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we recompute the heightSpec based on the new total length? 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 939f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 940f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 941f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as tall as the largest child. 942f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 943eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && heightMode != MeasureSpec.EXACTLY) { 944f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 945f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 946f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 947f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 948f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 949f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 950f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 951f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 952f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 953f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 954f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 955f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 956f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredWidth(), 957f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY), 958f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildHeight, 959f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 960f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 961f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 962f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 974189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState), 975189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSizeAndState); 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 988ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette if (child != null && child.getVisibility() != GONE) { 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 991980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.width == LayoutParams.MATCH_PARENT) { 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 1019189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 103165be9cc34c1619d3ba71726c821820f394b694abAlan Viverette boolean skippedMeasure = false; 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 10455b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 1046c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy 1047c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final boolean isExactly = widthMode == MeasureSpec.EXACTLY; 10485b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10495b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildWidth = Integer.MIN_VALUE; 105040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette int usedExcessSpace = 0; 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1065696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1066fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1067fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1068fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 106940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 107061c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette 107161c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette totalWeight += lp.weight; 107240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette 107340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final boolean useExcessSpace = lp.width == 0 && lp.weight > 0; 107440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (widthMode == MeasureSpec.EXACTLY && useExcessSpace) { 107540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Optimization: don't bother measuring children who are only 107640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // laid out using excess space. These views will get measured 107740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // later if we have space to distribute. 1078c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1079c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += lp.leftMargin + lp.rightMargin; 1080c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1081c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1082c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + 1083c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin); 1084c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 10876c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // baseline offset (in particular for TextViews). The following 10886c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // defeats the optimization mentioned above. Allow the child to 10896c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // use as much space as it wants because we can shrink things 10906c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // later (and re-measure). 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 1092d5dbf4b2a09c9cf2d17fa6af3fdf75d1fb774056Adam Powell final int freeWidthSpec = MeasureSpec.makeSafeMeasureSpec( 1093b6824bf58a0cd34395993fa204217e8e246de6fbFilip Gruszczynski MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.UNSPECIFIED); 1094d5dbf4b2a09c9cf2d17fa6af3fdf75d1fb774056Adam Powell final int freeHeightSpec = MeasureSpec.makeSafeMeasureSpec( 1095b6824bf58a0cd34395993fa204217e8e246de6fbFilip Gruszczynski MeasureSpec.getSize(heightMeasureSpec), MeasureSpec.UNSPECIFIED); 1096b6824bf58a0cd34395993fa204217e8e246de6fbFilip Gruszczynski child.measure(freeWidthSpec, freeHeightSpec); 109765be9cc34c1619d3ba71726c821820f394b694abAlan Viverette } else { 109865be9cc34c1619d3ba71726c821820f394b694abAlan Viverette skippedMeasure = true; 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 110140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 110240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // The widthMode is either UNSPECIFIED or AT_MOST, and 110340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // this child is only laid out using excess space. Measure 110440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // using WRAP_CONTENT so that we can find out the view's 110540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // optimal width. We'll restore the original width of 0 110640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // after measurement. 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 111440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int usedWidth = totalWeight == 0 ? mTotalLength : 0; 111540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette measureChildBeforeLayout(child, i, widthMeasureSpec, usedWidth, 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 111840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidth = child.getMeasuredWidth(); 111940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (useExcessSpace) { 112040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // Restore the original width and record how much space 112140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // we've allocated to excess-only children so that we can 112240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // match the behavior of EXACTLY measurement. 112340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette lp.width = 0; 112440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette usedExcessSpace += childWidth; 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11265b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1127c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 112840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mTotalLength += childWidth + lp.leftMargin + lp.rightMargin 112940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + getNextLocationOffset(child); 1130c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1131c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 113240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette mTotalLength = Math.max(totalLength, totalLength + childWidth + lp.leftMargin 113340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + lp.rightMargin + getNextLocationOffset(child)); 1134c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11355b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11365b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 11375b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildWidth = Math.max(childWidth, largestChildWidth); 11385b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 1142980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.MATCH_PARENT) { 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 1152189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1171980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1187696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 1188fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1189fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1190fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1206f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 1207f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.UNSPECIFIED)) { 12085b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 12095b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 12115b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 12125b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 12135b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 12145b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 12155b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12165b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 12185b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 12195b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 12205b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12215b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12225b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 12235b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1224c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1225c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += largestChildWidth + lp.leftMargin + lp.rightMargin + 1226c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1227c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1228c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1229c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildWidth + 1230c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1231c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 12325b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12335b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12345b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 1244189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int widthSizeAndState = resolveSizeAndState(widthSize, widthMeasureSpec, 0); 1245189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize = widthSizeAndState & MEASURED_SIZE_MASK; 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 124865be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // shrink them if they extend beyond our current bounds. If we skipped 124965be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // measurement on any children, we need to measure them now. 1250918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette int remainingExcess = widthSize - mTotalLength 125140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette + (mAllowInconsistentMeasurement ? 0 : usedExcessSpace); 1252918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (skippedMeasure || remainingExcess != 0 && totalWeight > 0.0f) { 1253918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette float remainingWeightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 126740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 1268918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette final float childWeight = lp.weight; 1269918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette if (childWeight > 0) { 127061c41bf6175222c265973b5fb0063b3e3c5d02c8Alan Viverette final int share = (int) (childWeight * remainingExcess / remainingWeightSum); 1271918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingExcess -= share; 1272918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette remainingWeightSum -= childWeight; 1273918f88696668e66de4eb72dabf16a5ad68cc0cc1Alan Viverette 127440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidth; 127540e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette if (lp.width == 0 && (!mAllowInconsistentMeasurement 127640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette || widthMode == MeasureSpec.EXACTLY)) { 127740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child needs to be laid out from scratch using 127840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // only its share of excess space. 127940e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childWidth = share; 128040e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette } else { 128140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // This child had some intrinsic width to which we 128240e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette // need to add its share of excess space. 128340e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette childWidth = child.getMeasuredWidth() + share; 128440e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette } 12855a969dfd8e45f6650d3dc35d3438d13754c70c2eAlan Viverette 128640e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec( 128740e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette Math.max(0, childWidth), MeasureSpec.EXACTLY); 128840e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette final int childHeightMeasureSpec = getChildMeasureSpec(heightMeasureSpec, 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 129140e1df34a9549a25020a325d0abc4d43c5a6b6e2Alan Viverette child.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1292189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 1293189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in horizontal dimension. 1294189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, 1295189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn child.getMeasuredState() & MEASURED_STATE_MASK); 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1298c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1299c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin + 1300c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1301c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1302c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1303c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredWidth() + 1304c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1305c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 1308980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.height == LayoutParams.MATCH_PARENT; 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1316980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 1336053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we update widthSize with the new total length? 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 1354f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1355f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as wide as the largest child. 1356f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 1357eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && widthMode != MeasureSpec.EXACTLY) { 1358f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 1359f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 1360f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 1361f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 1362f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1363f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1364f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 1365f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 1366f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1367f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 1368f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 1369f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 1370f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildWidth, MeasureSpec.EXACTLY), 1371f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredHeight(), 1372f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 1373f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1374f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1375f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1387189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSizeAndState | (childState&MEASURED_STATE_MASK), 1388189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn resolveSizeAndState(maxHeight, heightMeasureSpec, 1389189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn (childState<<MEASURED_HEIGHT_STATE_SHIFT))); 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 1399fc53e584d3d6ae106752cce334f143a68eb161bdFabrice Di Meglio // to accommodate the heightMeasureSpec from the parent 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 1404ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette if (child != null && child.getVisibility() != GONE) { 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1407980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.height == LayoutParams.MATCH_PARENT) { 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 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>Return the size offset of the next sibling of the specified child. 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 1490ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne layoutVertical(l, t, r, b); 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1492ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne layoutHorizontal(l, t, r, b); 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 1503ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param left 1504ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param top 1505ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param right 1506ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param bottom 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1508ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne void layoutVertical(int left, int top, int right, int bottom) { 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15111e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childTop; 15125b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childLeft; 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 1515ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne final int width = right - left; 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 15246a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int minorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15261e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio switch (majorGravity) { 15271e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.BOTTOM: 15281e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1529ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childTop = mPaddingTop + bottom - top - mTotalLength; 15301e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15311e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15321e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 15331e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_VERTICAL: 1534ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childTop = mPaddingTop + (bottom - top - mTotalLength) / 2; 15351e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15361e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15371e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.TOP: 15381e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 15391e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop; 15401e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1542fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += measureNullChild(i); 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1558e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1559c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio final int absoluteGravity = Gravity.getAbsoluteGravity(gravity, layoutDirection); 1560de35ceeeb9f8855c72dfd70593e917aa75b43770Fabrice Di Meglio switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15691e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15701e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 1571611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 15721e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = paddingLeft + lp.leftMargin; 1573611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15751e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 1576696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1577696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childTop += mDividerHeight; 1578696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1579696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 15809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 15849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 159078528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek @Override 159178528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek public void onRtlPropertiesChanged(@ResolvedLayoutDir int layoutDirection) { 159278528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek super.onRtlPropertiesChanged(layoutDirection); 159378528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek if (layoutDirection != mLayoutDirection) { 159478528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek mLayoutDirection = layoutDirection; 159578528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek if (mOrientation == HORIZONTAL) { 159678528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek requestLayout(); 159778528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek } 159878528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek } 159978528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek } 160078528b22c29f570469fe3c75328042f83a5a24c3Selim Cinek 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 16079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 1608ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param left 1609ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param top 1610ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param right 1611ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param bottom 16129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1613ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne void layoutHorizontal(int left, int top, int right, int bottom) { 16141e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childTop; 16181e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childLeft; 16199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 1621ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne final int height = bottom - top; 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 16239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 16289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16296a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int majorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 16309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1637e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1638c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio switch (Gravity.getAbsoluteGravity(majorGravity, layoutDirection)) { 16391e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.RIGHT: 16401e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1641ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childLeft = mPaddingLeft + right - left - mTotalLength; 16421e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16431e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16441e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_HORIZONTAL: 16451e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1646ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childLeft = mPaddingLeft + (right - left - mTotalLength) / 2; 16471e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16481e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16491e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 16501e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 16511e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft; 16521e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16531e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio } 16541e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16551e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int start = 0; 16561e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int dir = 1; 16571e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio //In case of RTL, start drawing from the last child. 16581e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (isLayoutRtl) { 16591e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio start = count - 1; 16601e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio dir = -1; 1661fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1662fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 1664ad52693cf3dfe3f5e84f5a22fe4c3787f2f2cbfbAlan Viverette final int childIndex = start + dir * i; 16651e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final View child = getVirtualChildAt(childIndex); 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 16671e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft += measureNullChild(childIndex); 16689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 16729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1676980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (baselineAligned && lp.height != LayoutParams.MATCH_PARENT) { 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 16839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 16889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 16899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 16909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 16945b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // Removed support for baseline alignment when layout_gravity or 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 16989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 17079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 17109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1716611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1717611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childTop = paddingTop; 1718611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17211e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (hasDividerBeforeChildAt(childIndex)) { 1722696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childLeft += mDividerWidth; 1723696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1724696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17311e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio i += getChildrenSkipCount(child, childIndex); 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 1742d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye * @param orientation Pass {@link #HORIZONTAL} or {@link #VERTICAL}. Default 1743d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye * value is {@link #HORIZONTAL}. 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1747d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public void setOrientation(@OrientationMode int orientation) { 17489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 17499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 17569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1759d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @OrientationMode 17609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 17619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 17629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 17689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 17699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 17719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 17739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 17769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 17776a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) { 17789e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio gravity |= Gravity.START; 17799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 17829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 17839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 17869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1790efe916c3c795b680152d229fd937cf112cf28086Jason Monk /** 1791efe916c3c795b680152d229fd937cf112cf28086Jason Monk * Returns the current gravity. See {@link android.view.Gravity} 1792efe916c3c795b680152d229fd937cf112cf28086Jason Monk * 1793efe916c3c795b680152d229fd937cf112cf28086Jason Monk * @return the current gravity. 1794efe916c3c795b680152d229fd937cf112cf28086Jason Monk * @see #setGravity 1795efe916c3c795b680152d229fd937cf112cf28086Jason Monk */ 1796efe916c3c795b680152d229fd937cf112cf28086Jason Monk public int getGravity() { 1797efe916c3c795b680152d229fd937cf112cf28086Jason Monk return mGravity; 1798efe916c3c795b680152d229fd937cf112cf28086Jason Monk } 1799efe916c3c795b680152d229fd937cf112cf28086Jason Monk 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 18026a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int gravity = horizontalGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 18036a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) != gravity) { 18046a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio mGravity = (mGravity & ~Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) | gravity; 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 18069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 18109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 18119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 18129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 18139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 18149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 18159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 18209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 18219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 1825980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 18269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 18279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 18289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 18299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 18309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 18339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 18349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 18359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 1836980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1842885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams lp) { 1843885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar if (lp instanceof LayoutParams) { 1844885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar return new LayoutParams((LayoutParams) lp); 1845885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar } else if (lp instanceof MarginLayoutParams) { 1846885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar return new LayoutParams((MarginLayoutParams) lp); 1847885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar } else { 1848885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar return new LayoutParams(lp); 1849885c50b6df08270642016c1f24a3b7e381341742Yigit Boyar } 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 18569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18588a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 18598a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 1860a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn public CharSequence getAccessibilityClassName() { 1861a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn return LinearLayout.class.getName(); 18628a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 18638a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 186494a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy /** @hide */ 186594a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy @Override 186694a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy protected void encodeProperties(@NonNull ViewHierarchyEncoder encoder) { 186794a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy super.encodeProperties(encoder); 186894a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:baselineAligned", mBaselineAligned); 186994a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:baselineAlignedChildIndex", mBaselineAlignedChildIndex); 187094a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:baselineChildTop", mBaselineChildTop); 187194a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:orientation", mOrientation); 187294a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:gravity", mGravity); 187394a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("measurement:totalLength", mTotalLength); 187494a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:totalLength", mTotalLength); 187594a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:useLargestChild", mUseLargestChild); 187694a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy } 187794a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy 18789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 18809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 18829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 18839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 18859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 18879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 18889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 18899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 18909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1891bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 18929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 18939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 18969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 18989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1899bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout", mapping = { 19009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 19019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 19029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 19039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 19049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 19059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 19069e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.IntToString(from = Gravity.START, to = "START"), 19079e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.IntToString(from = Gravity.END, to = "END"), 19089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 19099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 19109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 19119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 19129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 19139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 19149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 19159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 19169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 19219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 19229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 19239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 19249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 19269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 19279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 19299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 19359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 19369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 19379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 19419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 19429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1943980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param width the width, either {@link #MATCH_PARENT}, 19449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 1945980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param height the height, either {@link #MATCH_PARENT}, 19469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 19479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 19489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 19509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 19519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 19529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 19589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 19599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19640a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette public LayoutParams(ViewGroup.MarginLayoutParams source) { 19659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 19669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19680a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette /** 19690a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * Copy constructor. Clones the width, height, margin values, weight, 19700a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * and gravity of the source. 19710a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * 19720a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * @param source The layout params to copy from. 19730a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette */ 19740a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette public LayoutParams(LayoutParams source) { 19750a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette super(source); 19760a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette 19770a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette this.weight = source.weight; 19780a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette this.gravity = source.gravity; 19790a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette } 19800a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette 19819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 19829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 19839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 19849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 19859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 198694a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy 198794a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy /** @hide */ 198894a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy @Override 198994a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy protected void encodeProperties(@NonNull ViewHierarchyEncoder encoder) { 199094a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy super.encodeProperties(encoder); 199194a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy 199294a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:weight", weight); 199394a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy encoder.addProperty("layout:gravity", gravity); 199494a6d15ede149189bba9e5f474ed853c98230e75Siva Velusamy } 19959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1997