LinearLayout.java revision 3a1fa10e13f72396eb0d218ee4d7aad2a77134e3
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; 223a1fa10e13f72396eb0d218ee4d7aad2a77134e3Scott Kennedyimport android.annotation.Nullable; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 25fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powellimport android.graphics.Canvas; 26fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powellimport android.graphics.drawable.Drawable; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.Gravity; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 328a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityEvent; 338a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityNodeInfo; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.RemoteViews.RemoteView; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbyeimport java.lang.annotation.Retention; 37d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbyeimport java.lang.annotation.RetentionPolicy; 38d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A Layout that arranges its children in a single column or a single row. The direction of 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the row can be set by calling {@link #setOrientation(int) setOrientation()}. 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You can also specify gravity, which specifies the alignment of all the child elements by 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * calling {@link #setGravity(int) setGravity()} or specify that specific children 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * grow to fill up any remaining space in the layout by setting the <em>weight</em> member of 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams}. 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The default orientation is horizontal. 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 494c359b76f9a030f92a302ba74a528faa170bad4eScott Main * <p>See the <a href="{@docRoot}guide/topics/ui/layout/linear.html">Linear Layout</a> 504c359b76f9a030f92a302ba74a528faa170bad4eScott Main * guide.</p> 5141ec65355bd6ded652769725b276d47c54a0d913Scott Main * 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Also see {@link LinearLayout.LayoutParams android.widget.LinearLayout.LayoutParams} 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for layout attributes </p> 559295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 569295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAligned 579295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 589295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_gravity 599295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 609295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_orientation 619295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @attr ref android.R.styleable#LinearLayout_weightSum 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project@RemoteView 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class LinearLayout extends ViewGroup { 65d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye /** @hide */ 66d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @IntDef({HORIZONTAL, VERTICAL}) 67d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @Retention(RetentionPolicy.SOURCE) 68d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public @interface OrientationMode {} 69d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int HORIZONTAL = 0; 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int VERTICAL = 1; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 73d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye /** @hide */ 74d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @IntDef(flag = true, 75d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye value = { 76d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_NONE, 77d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_BEGINNING, 78d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_MIDDLE, 79d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye SHOW_DIVIDER_END 80d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye }) 81d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @Retention(RetentionPolicy.SOURCE) 82d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public @interface DividerMode {} 83d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 85fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Don't show any dividers. 86fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 87fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_NONE = 0; 88fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 89fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the beginning of the group. 90fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 91fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_BEGINNING = 1; 92fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 93fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show dividers between each item in the group. 94fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 95fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_MIDDLE = 2; 96fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 97fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Show a divider at the end of the group. 98fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 99fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public static final int SHOW_DIVIDER_END = 4; 100fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 101fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether the children of this layout are baseline aligned. Only applicable 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if {@link #mOrientation} is horizontal. 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 105bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mBaselineAligned = true; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this layout is part of another layout that is baseline aligned, 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * use the child at this index as the baseline. 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note: this is orthogonal to {@link #mBaselineAligned}, which is concerned 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with whether the children of this layout are baseline aligned. 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 115bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 116c1f9c40c23a756a11394a35f37053f796494b224Karl Rosaen private int mBaselineAlignedChildIndex = -1; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The additional offset to the child's baseline. 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * We'll calculate the baseline of this layout as we measure vertically; for 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * horizontal linear layouts, the offset of 0 is appropriate. 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 123bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBaselineChildTop = 0; 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 126bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mOrientation; 128bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 129bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.ExportedProperty(category = "measurement", flagMapping = { 130bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = -1, 131bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = -1, name = "NONE"), 132bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.NO_GRAVITY, 133bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.NO_GRAVITY,name = "NONE"), 134bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.TOP, 135bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.TOP, name = "TOP"), 136bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.BOTTOM, 137bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.BOTTOM, name = "BOTTOM"), 138bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.LEFT, 139bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.LEFT, name = "LEFT"), 140bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.RIGHT, 141bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.RIGHT, name = "RIGHT"), 1429e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.START, 1439e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio equals = Gravity.START, name = "START"), 1449e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.END, 1459e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio equals = Gravity.END, name = "END"), 146bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER_VERTICAL, 147bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER_VERTICAL, name = "CENTER_VERTICAL"), 148bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL_VERTICAL, 149bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL_VERTICAL, name = "FILL_VERTICAL"), 150bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER_HORIZONTAL, 151bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER_HORIZONTAL, name = "CENTER_HORIZONTAL"), 152bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL_HORIZONTAL, 153bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL_HORIZONTAL, name = "FILL_HORIZONTAL"), 154bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.CENTER, 155bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.CENTER, name = "CENTER"), 156bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.FILL, 157bce84d2bcaa30b9d937b629111091e9f6286c3ebFabrice Di Meglio equals = Gravity.FILL, name = "FILL"), 158c46f7ffa9079f3ae8a5204e7519ed7a1250116d0Fabrice Di Meglio @ViewDebug.FlagToString(mask = Gravity.RELATIVE_LAYOUT_DIRECTION, 159c46f7ffa9079f3ae8a5204e7519ed7a1250116d0Fabrice Di Meglio equals = Gravity.RELATIVE_LAYOUT_DIRECTION, name = "RELATIVE") 1604597e9806948256e82b9f1cdaa7019cbbd912668Jon Miranda }, formatToHexString = true) 1619e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio private int mGravity = Gravity.START | Gravity.TOP; 162bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev 163bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "measurement") 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTotalLength; 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 166bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mWeightSum; 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 169bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 1705b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private boolean mUseLargestChild; 1715b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxAscent; 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mMaxDescent; 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int VERTICAL_GRAVITY_COUNT = 4; 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_CENTER_VERTICAL = 0; 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_TOP = 1; 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INDEX_BOTTOM = 2; 1805b1b2417106f161e4bc66296888f4685f213eebdRomain Guy private static final int INDEX_FILL = 3; 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 182fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private Drawable mDivider; 183fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerWidth; 184fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerHeight; 185fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mShowDividers; 186fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell private int mDividerPadding; 187fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LinearLayout(Context context) { 189d6479ec5eec13914f656f6be996d95fe1610fd57Alan Viverette this(context, null); 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1923a1fa10e13f72396eb0d218ee4d7aad2a77134e3Scott Kennedy public LinearLayout(Context context, @Nullable AttributeSet attrs) { 1939295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy this(context, attrs, 0); 1949295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 1959295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 1963a1fa10e13f72396eb0d218ee4d7aad2a77134e3Scott Kennedy public LinearLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 197617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette this(context, attrs, defStyleAttr, 0); 198617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette } 199617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette 200617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette public LinearLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 201617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette super(context, attrs, defStyleAttr, defStyleRes); 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 203617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette final TypedArray a = context.obtainStyledAttributes( 204617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette attrs, com.android.internal.R.styleable.LinearLayout, defStyleAttr, defStyleRes); 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = a.getInt(com.android.internal.R.styleable.LinearLayout_orientation, -1); 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOrientation(index); 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = a.getInt(com.android.internal.R.styleable.LinearLayout_gravity, -1); 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0) { 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setGravity(index); 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean baselineAligned = a.getBoolean(R.styleable.LinearLayout_baselineAligned, true); 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!baselineAligned) { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setBaselineAligned(baselineAligned); 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = a.getFloat(R.styleable.LinearLayout_weightSum, -1.0f); 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1); 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2269295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_measureWithLargestChild, false); 2275b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 228fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setDividerDrawable(a.getDrawable(R.styleable.LinearLayout_divider)); 229fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = a.getInt(R.styleable.LinearLayout_showDividers, SHOW_DIVIDER_NONE); 230fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerPadding = a.getDimensionPixelSize(R.styleable.LinearLayout_dividerPadding, 0); 231fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 236fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set how dividers should be shown between items in this layout 237fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * 238fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING}, 239fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END}, 240fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * or {@link #SHOW_DIVIDER_NONE} to show no dividers. 241fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 242d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public void setShowDividers(@DividerMode int showDividers) { 243fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (showDividers != mShowDividers) { 244fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 245fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 246fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mShowDividers = showDividers; 247fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 248fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 249e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy @Override 250e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy public boolean shouldDelayChildPressedState() { 251e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy return false; 252e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy } 253e0a799a2ac1ca78e30fbac9e4e12a063425c08d3Patrick Dubroy 254fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 255fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @return A flag set indicating how dividers should be shown around items. 256fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 257fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 258d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @DividerMode 259fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public int getShowDividers() { 260fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return mShowDividers; 261fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 262fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 263fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 2641018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @return the divider Drawable that will divide each item. 2651018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2661018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @see #setDividerDrawable(Drawable) 2671018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2681018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 2691018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne */ 2701018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne public Drawable getDividerDrawable() { 2711018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne return mDivider; 2721018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne } 2731018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne 2741018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne /** 275fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * Set a drawable to be used as a divider between items. 2761018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 277fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @param divider Drawable that will divide each item. 2781018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 279fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell * @see #setShowDividers(int) 2801018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 2811018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_divider 282fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell */ 283fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell public void setDividerDrawable(Drawable divider) { 284fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider == mDivider) { 285fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 286fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 287fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider = divider; 288fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (divider != null) { 289fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = divider.getIntrinsicWidth(); 290fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = divider.getIntrinsicHeight(); 291fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 292fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerWidth = 0; 293fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDividerHeight = 0; 294fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 295fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell setWillNotDraw(divider == null); 296fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell requestLayout(); 297fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 298fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 299696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 300696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Set padding displayed on both ends of dividers. 301696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 302696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param padding Padding value in pixels that will be applied to each end 303696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 304696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 305696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 306696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #getDividerPadding() 307696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 308696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public void setDividerPadding(int padding) { 309696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell mDividerPadding = padding; 310696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 311696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 312696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 313696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Get the padding size used to inset dividers in pixels 314696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 315696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setShowDividers(int) 316696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerDrawable(Drawable) 317696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @see #setDividerPadding(int) 318696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 319696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell public int getDividerPadding() { 320696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return mDividerPadding; 321696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 322696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 323640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell /** 324640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * Get the width of the current divider drawable. 325640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * 326640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell * @hide Used internally by framework. 327640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell */ 328640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell public int getDividerWidth() { 329640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell return mDividerWidth; 330640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell } 331640a66eac612b850b5dabd3b93bd94f83ed2d567Adam Powell 332fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell @Override 333fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell protected void onDraw(Canvas canvas) { 334fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mDivider == null) { 335fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell return; 336fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 337fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 338fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell if (mOrientation == VERTICAL) { 339fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersVertical(canvas); 340fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } else { 341fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawDividersHorizontal(canvas); 342fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 343fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 344fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 345fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersVertical(Canvas canvas) { 346fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 347fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 348fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 349fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 35035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 351696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 35235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 35320761fcdcd513a808e855708fe2e676e409beb36Vladimir Baryshnikov final int top = child.getTop() - lp.topMargin - mDividerHeight; 354fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell drawHorizontalDivider(canvas, top); 355fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 356fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 357fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 358fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 359696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 36035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final View child = getVirtualChildAt(count - 1); 36135aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell int bottom = 0; 36235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 36335aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = getHeight() - getPaddingBottom() - mDividerHeight; 36435aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 36535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 36635aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell bottom = child.getBottom() + lp.bottomMargin; 36735aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 36835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell drawHorizontalDivider(canvas, bottom); 369fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 370fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 371fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 372fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawDividersHorizontal(Canvas canvas) { 373fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final int count = getVirtualChildCount(); 3744ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 375fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell for (int i = 0; i < count; i++) { 376fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell final View child = getVirtualChildAt(i); 377fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 37835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child != null && child.getVisibility() != GONE) { 379696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 38035aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 3814ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio final int position; 3824ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 3834ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 3844ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 3854ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 3864ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 3874ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 388fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 389fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 390fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 391fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 392696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(count)) { 39335aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final View child = getVirtualChildAt(count - 1); 3944ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio int position; 39535aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell if (child == null) { 3964ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 3974ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getPaddingLeft(); 3984ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 3994ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = getWidth() - getPaddingRight() - mDividerWidth; 4004ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 40135aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } else { 40235aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell final LayoutParams lp = (LayoutParams) child.getLayoutParams(); 4034ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio if (isLayoutRtl) { 4044ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getLeft() - lp.leftMargin - mDividerWidth; 4054ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } else { 4064ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio position = child.getRight() + lp.rightMargin; 4074ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio } 40835aecd5884a5ccfe380903e39f30f468315e8f92Adam Powell } 4094ab6968bb7014e6f4c6c4e4bd076626cf07f218bFabrice Di Meglio drawVerticalDivider(canvas, position); 410fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 411fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 412fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 413fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawHorizontalDivider(Canvas canvas, int top) { 414fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(getPaddingLeft() + mDividerPadding, top, 415fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight); 416fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 417fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 418fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 419fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell void drawVerticalDivider(Canvas canvas, int left) { 420fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.setBounds(left, getPaddingTop() + mDividerPadding, 421fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding); 422fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mDivider.draw(canvas); 423fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 424fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 425fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell /** 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Indicates whether widgets contained within this layout are aligned 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on their baseline or not.</p> 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true when widgets are baseline-aligned, false otherwise 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isBaselineAligned() { 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAligned; 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Defines whether widgets contained in this layout are 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * baseline-aligned or not.</p> 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param baselineAligned true to align widgets on their baseline, 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false otherwise 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAligned 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAligned(boolean baselineAligned) { 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAligned = baselineAligned; 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4499295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4509295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When true, all children with a weight will be considered having 4519295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4529295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 4539295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4549295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @return True to measure children with a weight using the minimum 4559295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * size of the largest child, false otherwise. 4561018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 4571018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 4589295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 4599295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public boolean isMeasureWithLargestChildEnabled() { 4609295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy return mUseLargestChild; 4619295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 4629295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 4639295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy /** 4649295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * When set to true, all children with a weight will be considered having 4659295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * the minimum size of the largest child. If false, all children are 4669295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * measured normally. 4679295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4689295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * Disabled by default. 4699295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * 4709295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * @param enabled True to measure children with a weight using the 4719295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy * minimum size of the largest child, false otherwise. 4721018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * 4731018fb42cb4958511a141787705aa429c5ec9bd3Philip Milne * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild 4749295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy */ 4759295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy @android.view.RemotableViewMethod 4769295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy public void setMeasureWithLargestChildEnabled(boolean enabled) { 4779295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy mUseLargestChild = enabled; 4789295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy } 4799295ada0ec89fa7a666be4a2f1006a4b722adf4fRomain Guy 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaseline() { 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex < 0) { 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.getBaseline(); 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= mBaselineAlignedChildIndex) { 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "set to an index that is out of bounds."); 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mBaselineAlignedChildIndex); 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline == -1) { 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mBaselineAlignedChildIndex == 0) { 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // this is just the default case, safe to return -1 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the user picked an index that points to something that doesn't 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // know how to calculate its baseline. 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("mBaselineAlignedChildIndex of LinearLayout " 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "points to a View that doesn't know how to get its baseline."); 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: This should try to take into account the virtual offsets 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (See getNextLocationOffset and getLocationOffset) 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We should add to childTop: 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // sum([getNextLocationOffset(getChildAt(i)) / i < mBaselineAlignedChildIndex]) 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and also add: 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // getLocationOffset(child) 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childTop = mBaselineChildTop; 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (majorGravity != Gravity.TOP) { 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (majorGravity) { 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = mBottom - mTop - mPaddingBottom - mTotalLength; 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += ((mBottom - mTop - mPaddingTop - mPaddingBottom) - 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength) / 2; 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return childTop + lp.topMargin + childBaseline; 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The index of the child that will be used if this layout is 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned, or -1 if none has 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been set. 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBaselineAlignedChildIndex() { 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBaselineAlignedChildIndex; 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param i The index of the child that will be used if this layout is 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * part of a larger layout that is baseline aligned. 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setBaselineAlignedChildIndex(int i) { 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((i < 0) || (i >= getChildCount())) { 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("base aligned child index out " 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "of range (0, " + getChildCount() + ")"); 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineAlignedChildIndex = i; 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the view at the specified index. This method can be overriden 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to take into account virtual children. Refer to 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the child's index 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the child at the specified index 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getVirtualChildAt(int index) { 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(index); 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the virtual number of children. This number might be different 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than the actual number of children if the layout can hold virtual 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. Refer to 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.TableLayout} and {@link android.widget.TableRow} 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for an example.</p> 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the virtual number of children 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getVirtualChildCount() { 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildCount(); 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the desired weights sum. 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A number greater than 0.0f if the weight sum is defined, or 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a number lower than or equals to 0.0f if not weight sum is 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be used. 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getWeightSum() { 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWeightSum; 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the desired weights sum. If unspecified the weights sum is computed 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at layout time by adding the layout_weight of each child. 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used for instance to give a single child 50% of the total 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * available space by giving it a layout_weight of 0.5 and setting the 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * weightSum to 1.0. 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weightSum a number greater than 0.0f, or a number lower than or equals 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to 0.0f if the weight sum should be computed from the children's 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout_weight 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setWeightSum(float weightSum) { 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWeightSum = Math.max(0.0f, weightSum); 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureVertical(widthMeasureSpec, heightMeasureSpec); 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureHorizontal(widthMeasureSpec, heightMeasureSpec); 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 621696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * Determines where to position dividers between children. 622696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * 623696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @param childIndex Index of child to check for preceding divider 624696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @return true if there should be a divider before the child at childIndex 625696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell * @hide Pending API consideration. Currently only used internally by the system. 626696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell */ 627696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell protected boolean hasDividerBeforeChildAt(int childIndex) { 628696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (childIndex == 0) { 629696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0; 630696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } else if (childIndex == getChildCount()) { 631696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell return (mShowDividers & SHOW_DIVIDER_END) != 0; 632bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } else if ((mShowDividers & SHOW_DIVIDER_MIDDLE) != 0) { 633bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell boolean hasVisibleViewBefore = false; 634bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell for (int i = childIndex - 1; i >= 0; i--) { 635bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell if (getChildAt(i).getVisibility() != GONE) { 636bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell hasVisibleViewBefore = true; 637bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell break; 638bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } 639bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell } 640bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell return hasVisibleViewBefore; 641696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 642bf68f833fe835ce393264ecb2fdf3a7d8c38cfdeAdam Powell return false; 643696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 644696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 645696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell /** 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #VERTICAL}. 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureVertical(int widthMeasureSpec, int heightMeasureSpec) { 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxWidth = 0; 659189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxWidth = 0; 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxWidth = 0; 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidth = false; 67165be9cc34c1619d3ba71726c821820f394b694abAlan Viverette boolean skippedMeasure = false; 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int baselineChildIndex = mBaselineAlignedChildIndex; 6745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 6755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 6765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildHeight = Integer.MIN_VALUE; 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how tall everyone is. Also remember max width. 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 692696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 693fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 694fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 695fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.EXACTLY && lp.height == 0 && lp.weight > 0) { 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 704053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 705053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + lp.topMargin + lp.bottomMargin); 70665be9cc34c1619d3ba71726c821820f394b694abAlan Viverette skippedMeasure = true; 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7085b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int oldHeight = Integer.MIN_VALUE; 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (lp.height == 0 && lp.weight > 0) { 711f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // heightMode is either UNSPECIFIED or AT_MOST, and this 712f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child wanted to stretch to fill available space. 713f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Translate that to WRAP_CONTENT so that it does not end up 714f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // with a height of 0 715f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne oldHeight = 0; 716f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne lp.height = LayoutParams.WRAP_CONTENT; 7175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 719f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // Determine how big this child would like to be. If this or 7205b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // previous children have given a weight, then we allow it to 7215b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // use all available space (and we will shrink things later 7225b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // if needed). 7235b1b2417106f161e4bc66296888f4685f213eebdRomain Guy measureChildBeforeLayout( 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child, i, widthMeasureSpec, 0, heightMeasureSpec, 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0); 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7275b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (oldHeight != Integer.MIN_VALUE) { 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 7295b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7315b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childHeight = child.getMeasuredHeight(); 732053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 733053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childHeight + lp.topMargin + 734053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.bottomMargin + getNextLocationOffset(child)); 7355b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7365b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 7375b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildHeight = Math.max(childHeight, largestChildHeight); 7385b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If applicable, compute the additional offset to the child's baseline 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we'll need later when asked {@link #getBaseline}. 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((baselineChildIndex >= 0) && (baselineChildIndex == i + 1)) { 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBaselineChildTop = mTotalLength; 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are trying to use a child index for our baseline, the above 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // book keeping only works if there are no children above it with 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // weight. fail fast to aid the developer. 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i < baselineChildIndex && lp.weight > 0) { 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("A child of LinearLayout with index " 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "less than mBaselineAlignedChildIndex has weight > 0, which " 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "won't work. Either remove the weight, or don't set " 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "mBaselineAlignedChildIndex."); 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = false; 760980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (widthMode != MeasureSpec.EXACTLY && lp.width == LayoutParams.MATCH_PARENT) { 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The width of the linear layout will scale, and at least one 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our width. Set a flag 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indicating that we need to remeasure at least that view when 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we know our width. 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidth = true; 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally = true; 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 772189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 774980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Widths of weighted Views are bogus if we end up 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth = Math.max(weightedMaxWidth, 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7895b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 790696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 791fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerHeight; 792fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 793fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 794f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 795f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (heightMode == MeasureSpec.AT_MOST || heightMode == MeasureSpec.UNSPECIFIED)) { 7965b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 7975b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 7985b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 7995b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 8005b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8015b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 8025b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 8035b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 8045b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8055b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8065b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 8075b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 8085b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 8095b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8105b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8115b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 8125b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 813053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // Account for negative margins 814053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 815053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildHeight + 816053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 8175b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8185b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 8195b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingTop + mPaddingBottom; 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = mTotalLength; 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = Math.max(heightSize, getSuggestedMinimumHeight()); 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the heightMeasureSpec 829189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int heightSizeAndState = resolveSizeAndState(heightSize, heightMeasureSpec, 0); 830189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSize = heightSizeAndState & MEASURED_SIZE_MASK; 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 83365be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // shrink them if they extend beyond our current bounds. If we skipped 83465be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // measurement on any children, we need to measure them now. 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = heightSize - mTotalLength; 83665be9cc34c1619d3ba71726c821820f394b694abAlan Viverette if (skippedMeasure || delta != 0 && totalWeight > 0.0f) { 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.GONE) { 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingLeft + mPaddingRight + 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.leftMargin + lp.rightMargin, lp.width); 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.height != 0) || (heightMode != MeasureSpec.EXACTLY)) { 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above... 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // base new measurement on stored values 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + share; 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childHeight < 0) { 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = 0; 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Measure for this first time here 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthMeasureSpec, 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(share > 0 ? share : 0, 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY)); 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 880189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 881189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in vertical dimension. 882189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState() 883189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT)); 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.leftMargin + lp.rightMargin; 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measuredWidth = child.getMeasuredWidth() + margin; 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, measuredWidth); 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchWidthLocally = widthMode != MeasureSpec.EXACTLY && 891980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.width == LayoutParams.MATCH_PARENT; 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchWidthLocally ? margin : measuredWidth); 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 896980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.width == LayoutParams.MATCH_PARENT; 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 898053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy final int totalLength = mTotalLength; 899053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredHeight() + 900053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy lp.topMargin + lp.bottomMargin + getNextLocationOffset(child)); 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 904053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy mTotalLength += mPaddingTop + mPaddingBottom; 905053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we recompute the heightSpec based on the new total length? 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxWidth = Math.max(alternativeMaxWidth, 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxWidth); 909f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 910f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 911f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as tall as the largest child. 912f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 913eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && heightMode != MeasureSpec.EXACTLY) { 914f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 915f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 916f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 917f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 918f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 919f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 920f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 921f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 922f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 923f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 924f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 925f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 926f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 927f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredWidth(), 928f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY), 929f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildHeight, 930f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 931f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 932f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 933f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && widthMode != MeasureSpec.EXACTLY) { 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = alternativeMaxWidth; 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth += mPaddingLeft + mPaddingRight; 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 945189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState), 946189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn heightSizeAndState); 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchWidth) { 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformWidth(count, heightMeasureSpec); 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformWidth(int count, int heightMeasureSpec) { 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i< count; ++i) { 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = ((LinearLayout.LayoutParams)child.getLayoutParams()); 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 962980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.width == LayoutParams.MATCH_PARENT) { 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured height 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = lp.height; 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = child.getMeasuredHeight(); 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasue with new dimensions 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, uniformMeasureSpec, 0, heightMeasureSpec, 0); 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height = oldHeight; 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the children when the orientation of this LinearLayout is set 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to {@link #HORIZONTAL}. 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec Horizontal space requirements as imposed by the parent. 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec Vertical space requirements as imposed by the parent. 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onMeasure(int, int) 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec) { 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int maxHeight = 0; 990189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int alternativeMaxHeight = 0; 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int weightedMaxHeight = 0; 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean allFillParent = true; 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float totalWeight = 0; 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeight = false; 100265be9cc34c1619d3ba71726c821820f394b694abAlan Viverette boolean skippedMeasure = false; 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mMaxAscent == null || mMaxDescent == null) { 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxAscent = new int[VERTICAL_GRAVITY_COUNT]; 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaxDescent = new int[VERTICAL_GRAVITY_COUNT]; 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 10165b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final boolean useLargestChild = mUseLargestChild; 1017c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy 1018c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final boolean isExactly = widthMode == MeasureSpec.EXACTLY; 10195b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10205b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int largestChildWidth = Integer.MIN_VALUE; 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See how wide everyone is. Also remember max height. 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += measureNullChild(i); 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == GONE) { 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1036696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1037fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1038fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1039fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 10405b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 10415b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight += lp.weight; 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.EXACTLY && lp.width == 0 && lp.weight > 0) { 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Optimization: don't bother measuring children who are going to use 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leftover space. These views will get measured again down below if 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there is any leftover space. 1049c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1050c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += lp.leftMargin + lp.rightMargin; 1051c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1052c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1053c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + 1054c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin); 1055c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Baseline alignment requires to measure widgets to obtain the 10586c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // baseline offset (in particular for TextViews). The following 10596c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // defeats the optimization mentioned above. Allow the child to 10606c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // use as much space as it wants because we can shrink things 10616c5664ac58463fefb580acd0d9b5550b25511f85Romain Guy // later (and re-measure). 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int freeSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(freeSpec, freeSpec); 106565be9cc34c1619d3ba71726c821820f394b694abAlan Viverette } else { 106665be9cc34c1619d3ba71726c821820f394b694abAlan Viverette skippedMeasure = true; 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = Integer.MIN_VALUE; 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.width == 0 && lp.weight > 0) { 1072f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // widthMode is either UNSPECIFIED or AT_MOST, and this 1073f5c6eff63d19a9f7a970a4f90619edac873c006dGilles Debunne // child 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wanted to stretch to fill available space. Translate that to 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // WRAP_CONTENT so that it does not end up with a width of 0 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldWidth = 0; 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = LayoutParams.WRAP_CONTENT; 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Determine how big this child would like to be. If this or 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // previous children have given a weight, then we allow it to 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // use all available space (and we will shrink things later 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if needed). 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildBeforeLayout(child, i, widthMeasureSpec, 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project totalWeight == 0 ? mTotalLength : 0, 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 0); 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldWidth != Integer.MIN_VALUE) { 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10915b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 10925b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final int childWidth = child.getMeasuredWidth(); 1093c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1094c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += childWidth + lp.leftMargin + lp.rightMargin + 1095c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1096c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1097c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1098c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + childWidth + lp.leftMargin + 1099c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.rightMargin + getNextLocationOffset(child)); 1100c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11015b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11025b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (useLargestChild) { 11035b1b2417106f161e4bc66296888f4685f213eebdRomain Guy largestChildWidth = Math.max(childWidth, largestChildWidth); 11045b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = false; 1108980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (heightMode != MeasureSpec.EXACTLY && lp.height == LayoutParams.MATCH_PARENT) { 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The height of the linear layout will scale, and at least one 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child said it wanted to match our height. Set a flag indicating that 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to remeasure at least that view when we know our height. 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeight = true; 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally = true; 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp.bottomMargin; 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight() + margin; 1118189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the range 0..VERTICAL_GRAVITY_COUNT 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], childHeight - childBaseline); 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1137980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp.weight > 0) { 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Heights of weighted Views are bogus if we end up 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remeasuring, so keep them separate. 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightedMaxHeight = Math.max(weightedMaxHeight, 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1153696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (mTotalLength > 0 && hasDividerBeforeChildAt(count)) { 1154fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell mTotalLength += mDividerWidth; 1155fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1156fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1172f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (useLargestChild && 1173f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.UNSPECIFIED)) { 11745b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength = 0; 11755b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11765b1b2417106f161e4bc66296888f4685f213eebdRomain Guy for (int i = 0; i < count; ++i) { 11775b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final View child = getVirtualChildAt(i); 11785b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11795b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child == null) { 11805b1b2417106f161e4bc66296888f4685f213eebdRomain Guy mTotalLength += measureNullChild(i); 11815b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 11825b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11835b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11845b1b2417106f161e4bc66296888f4685f213eebdRomain Guy if (child.getVisibility() == GONE) { 11855b1b2417106f161e4bc66296888f4685f213eebdRomain Guy i += getChildrenSkipCount(child, i); 11865b1b2417106f161e4bc66296888f4685f213eebdRomain Guy continue; 11875b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 11885b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 11895b1b2417106f161e4bc66296888f4685f213eebdRomain Guy final LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) 11905b1b2417106f161e4bc66296888f4685f213eebdRomain Guy child.getLayoutParams(); 1191c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1192c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += largestChildWidth + lp.leftMargin + lp.rightMargin + 1193c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1194c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1195c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1196c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + largestChildWidth + 1197c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1198c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 11995b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12005b1b2417106f161e4bc66296888f4685f213eebdRomain Guy } 12015b1b2417106f161e4bc66296888f4685f213eebdRomain Guy 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = mTotalLength; 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum width 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = Math.max(widthSize, getSuggestedMinimumWidth()); 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reconcile our calculated size with the widthMeasureSpec 1211189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int widthSizeAndState = resolveSizeAndState(widthSize, widthMeasureSpec, 0); 1212189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize = widthSizeAndState & MEASURED_SIZE_MASK; 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either expand children with weight to take up available space or 121565be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // shrink them if they extend beyond our current bounds. If we skipped 121665be9cc34c1619d3ba71726c821820f394b694abAlan Viverette // measurement on any children, we need to measure them now. 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = widthSize - mTotalLength; 121865be9cc34c1619d3ba71726c821820f394b694abAlan Viverette if (skippedMeasure || delta != 0 && totalWeight > 0.0f) { 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float weightSum = mWeightSum > 0.0f ? mWeightSum : totalWeight; 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[0] = maxAscent[1] = maxAscent[2] = maxAscent[3] = -1; 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[0] = maxDescent[1] = maxDescent[2] = maxDescent[3] = -1; 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = -1; 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength = 0; 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null || child.getVisibility() == View.GONE) { 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float childExtra = lp.weight; 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childExtra > 0) { 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child said it could absorb extra space -- give him his share 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int share = (int) (childExtra * delta / weightSum); 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weightSum -= childExtra; 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= share; 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeightMeasureSpec = getChildMeasureSpec( 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin, 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.height); 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Use a field like lp.isMeasured to figure out if this 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child has been previously measured 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((lp.width != 0) || (widthMode != MeasureSpec.EXACTLY)) { 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was measured once already above ... base new measurement 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // on stored values 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = child.getMeasuredWidth() + share; 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childWidth < 0) { 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = 0; 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure( 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // child was skipped in the loop above. Measure for this first time here 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(MeasureSpec.makeMeasureSpec( 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project share > 0 ? share : 0, MeasureSpec.EXACTLY), 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightMeasureSpec); 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1268189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn 1269189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn // Child may now not fit in horizontal dimension. 1270189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, 1271189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn child.getMeasuredState() & MEASURED_STATE_MASK); 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1274c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy if (isExactly) { 1275c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin + 1276c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy getNextLocationOffset(child); 1277c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } else { 1278c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy final int totalLength = mTotalLength; 1279c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy mTotalLength = Math.max(totalLength, totalLength + child.getMeasuredWidth() + 1280c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy lp.leftMargin + lp.rightMargin + getNextLocationOffset(child)); 1281c352090c49b50a70aaddeb428bd5e27f7419884fRomain Guy } 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean matchHeightLocally = heightMode != MeasureSpec.EXACTLY && 1284980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy lp.height == LayoutParams.MATCH_PARENT; 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int margin = lp.topMargin + lp .bottomMargin; 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = child.getMeasuredHeight() + margin; 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, childHeight); 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project matchHeightLocally ? margin : childHeight); 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1292980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy allFillParent = allFillParent && lp.height == LayoutParams.MATCH_PARENT; 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (baselineAligned) { 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBaseline = child.getBaseline(); 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Translates the child's vertical gravity into an index in the range 0..2 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = (lp.gravity < 0 ? mGravity : lp.gravity) 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & Gravity.VERTICAL_GRAVITY_MASK; 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int index = ((gravity >> Gravity.AXIS_Y_SHIFT) 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project & ~Gravity.AXIS_SPECIFIED) >> 1; 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[index] = Math.max(maxAscent[index], childBaseline); 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxDescent[index] = Math.max(maxDescent[index], 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight - childBaseline); 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add in our padding 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTotalLength += mPaddingLeft + mPaddingRight; 1312053b48051abab0abd85995a23fcbc172e8c4c57fRomain Guy // TODO: Should we update widthSize with the new total length? 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check mMaxAscent[INDEX_TOP] first because it maps to Gravity.TOP, 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the most common case 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (maxAscent[INDEX_TOP] != -1 || 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_CENTER_VERTICAL] != -1 || 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_BOTTOM] != -1 || 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxAscent[INDEX_FILL] != -1) { 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ascent = Math.max(maxAscent[INDEX_FILL], 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_CENTER_VERTICAL], 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxAscent[INDEX_TOP], maxAscent[INDEX_BOTTOM]))); 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int descent = Math.max(maxDescent[INDEX_FILL], 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_CENTER_VERTICAL], 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Math.max(maxDescent[INDEX_TOP], maxDescent[INDEX_BOTTOM]))); 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, ascent + descent); 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project alternativeMaxHeight = Math.max(alternativeMaxHeight, weightedMaxHeight); 1330f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1331f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // We have no limit, so make all weighted views as wide as the largest child. 1332f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell // Children will have already been measured once. 1333eabc9198447c7f6253fcbee8af2887a650e79b00Adam Powell if (useLargestChild && widthMode != MeasureSpec.EXACTLY) { 1334f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell for (int i = 0; i < count; i++) { 1335f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final View child = getVirtualChildAt(i); 1336f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1337f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (child == null || child.getVisibility() == View.GONE) { 1338f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell continue; 1339f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1340f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1341f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell final LinearLayout.LayoutParams lp = 1342f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell (LinearLayout.LayoutParams) child.getLayoutParams(); 1343f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell 1344f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell float childExtra = lp.weight; 1345f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell if (childExtra > 0) { 1346f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell child.measure( 1347f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(largestChildWidth, MeasureSpec.EXACTLY), 1348f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.makeMeasureSpec(child.getMeasuredHeight(), 1349f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell MeasureSpec.EXACTLY)); 1350f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1351f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 1352f8ac6b7394cfd37f01471bb35475ff2930eee140Adam Powell } 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!allFillParent && heightMode != MeasureSpec.EXACTLY) { 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = alternativeMaxHeight; 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight += mPaddingTop + mPaddingBottom; 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check against our minimum height 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1364189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSizeAndState | (childState&MEASURED_STATE_MASK), 1365189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn resolveSizeAndState(maxHeight, heightMeasureSpec, 1366189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn (childState<<MEASURED_HEIGHT_STATE_SHIFT))); 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (matchHeight) { 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project forceUniformHeight(count, widthMeasureSpec); 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void forceUniformHeight(int count, int widthMeasureSpec) { 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend that the linear layout has an exact size. This is the measured height of 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ourselves. The measured height should be the max height of the children, changed 1376fc53e584d3d6ae106752cce334f143a68eb161bdFabrice Di Meglio // to accommodate the heightMeasureSpec from the parent 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uniformMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MeasureSpec.EXACTLY); 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() != GONE) { 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) child.getLayoutParams(); 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1384980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (lp.height == LayoutParams.MATCH_PARENT) { 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Temporarily force children to reuse their old measured width 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: this may not be right for something like wrapping text? 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldWidth = lp.width; 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = child.getMeasuredWidth(); 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remeasure with new dimensions 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, 0, uniformMeasureSpec, 0); 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lp.width = oldWidth; 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the number of children to skip after measuring/laying out 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the specified child.</p> 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child after which we want to skip children 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index the index of the child after which we want to skip children 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the number of children to skip, 0 by default 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getChildrenSkipCount(View child, int index) { 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Returns the size (width or height) that should be occupied by a null 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child.</p> 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the null child 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the width or height of the child depending on the orientation 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int measureNullChild(int childIndex) { 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Measure the child according to the parent's measure specs. This 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method should be overriden by subclasses to force the sizing of 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children. This method is called by {@link #measureVertical(int, int)} and 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #measureHorizontal(int, int)}.</p> 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child to measure 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex the index of the child in this view 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec horizontal space requirements as imposed by the parent 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalWidth extra space that has been used up by the parent horizontally 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param heightMeasureSpec vertical space requirements as imposed by the parent 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalHeight extra space that has been used up by the parent vertically 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void measureChildBeforeLayout(View child, int childIndex, 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMeasureSpec, int totalWidth, int heightMeasureSpec, 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalHeight) { 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureChildWithMargins(child, widthMeasureSpec, totalWidth, 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMeasureSpec, totalHeight); 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the location offset of the specified child. This can be used 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by subclasses to change the location of a given widget.</p> 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child for which to obtain the location offset 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset in pixels 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getLocationOffset(View child) { 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>Return the size offset of the next sibling of the specified child. 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This can be used by subclasses to change the location of the widget 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * following <code>child</code>.</p> 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child the child whose next sibling will be moved 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the location offset of the next child in pixels 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getNextLocationOffset(View child) { 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == VERTICAL) { 1467ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne layoutVertical(l, t, r, b); 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1469ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne layoutHorizontal(l, t, r, b); 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #VERTICAL}. 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 1480ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param left 1481ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param top 1482ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param right 1483ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param bottom 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1485ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne void layoutVertical(int left, int top, int right, int bottom) { 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingLeft = mPaddingLeft; 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14881e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childTop; 14895b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childLeft; 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where right end of child should go 1492ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne final int width = right - left; 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childRight = width - mPaddingRight; 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = width - paddingLeft - mPaddingRight; 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int majorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 15016a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int minorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15031e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio switch (majorGravity) { 15041e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.BOTTOM: 15051e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1506ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childTop = mPaddingTop + bottom - top - mTotalLength; 15071e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15081e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15091e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 15101e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_VERTICAL: 1511ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childTop = mPaddingTop + (bottom - top - mTotalLength) / 2; 15121e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15131e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15141e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.TOP: 15151e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 15161e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childTop = mPaddingTop; 15171e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1519fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getVirtualChildAt(i); 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += measureNullChild(i); 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1535e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1536c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio final int absoluteGravity = Gravity.getAbsoluteGravity(gravity, layoutDirection); 1537de35ceeeb9f8855c72dfd70593e917aa75b43770Fabrice Di Meglio switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_HORIZONTAL: 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = paddingLeft + ((childSpace - childWidth) / 2) 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.leftMargin - lp.rightMargin; 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.RIGHT: 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft = childRight - childWidth - lp.rightMargin; 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15461e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 15471e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 1548611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 15491e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = paddingLeft + lp.leftMargin; 1550611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15521e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 1553696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell if (hasDividerBeforeChildAt(i)) { 1554696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childTop += mDividerHeight; 1555696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1556696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += lp.topMargin; 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft, childTop + getLocationOffset(child), 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 15609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += childHeight + lp.bottomMargin + getNextLocationOffset(child); 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += getChildrenSkipCount(child, i); 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position the children during a layout pass if the orientation of this 15699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * LinearLayout is set to {@link #HORIZONTAL}. 15709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getOrientation() 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setOrientation(int) 15739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #onLayout(boolean, int, int, int, int) 1574ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param left 1575ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param top 1576ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param right 1577ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne * @param bottom 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1579ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne void layoutHorizontal(int left, int top, int right, int bottom) { 15801e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final boolean isLayoutRtl = isLayoutRtl(); 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int paddingTop = mPaddingTop; 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15835b1b2417106f161e4bc66296888f4685f213eebdRomain Guy int childTop; 15841e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childLeft; 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Where bottom of child should go 1587ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne final int height = bottom - top; 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBottom = height - mPaddingBottom; 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Space available for child 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childSpace = height - paddingTop - mPaddingBottom; 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getVirtualChildCount(); 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15956a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int majorGravity = mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int minorGravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean baselineAligned = mBaselineAligned; 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxAscent = mMaxAscent; 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] maxDescent = mMaxDescent; 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1603e56ffdc7b31b0937628609cc3bbaa15879023569Fabrice Di Meglio final int layoutDirection = getLayoutDirection(); 1604c0053223bedf33581b0830fb87be32c1f26e5372Fabrice Di Meglio switch (Gravity.getAbsoluteGravity(majorGravity, layoutDirection)) { 16051e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.RIGHT: 16061e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1607ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childLeft = mPaddingLeft + right - left - mTotalLength; 16081e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16091e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16101e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.CENTER_HORIZONTAL: 16111e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio // mTotalLength contains the padding already 1612ad365cc217c989c3b688ae839d6f94ee8889a84ePhilip Milne childLeft = mPaddingLeft + (right - left - mTotalLength) / 2; 16131e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16141e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16151e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio case Gravity.LEFT: 16161e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio default: 16171e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft = mPaddingLeft; 16181e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio break; 16191e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio } 16201e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio 16211e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int start = 0; 16221e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int dir = 1; 16231e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio //In case of RTL, start drawing from the last child. 16241e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (isLayoutRtl) { 16251e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio start = count - 1; 16261e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio dir = -1; 1627fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell } 1628fcca00accb923d3cbda4e0d6f5540b10e8279cd2Adam Powell 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 16301e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio int childIndex = start + dir * i; 16311e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio final View child = getVirtualChildAt(childIndex); 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == null) { 16341e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio childLeft += measureNullChild(childIndex); 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (child.getVisibility() != GONE) { 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childWidth = child.getMeasuredWidth(); 16379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childHeight = child.getMeasuredHeight(); 16389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childBaseline = -1; 16399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final LinearLayout.LayoutParams lp = 16419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (LinearLayout.LayoutParams) child.getLayoutParams(); 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1643980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy if (baselineAligned && lp.height != LayoutParams.MATCH_PARENT) { 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childBaseline = child.getBaseline(); 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int gravity = lp.gravity; 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gravity < 0) { 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = minorGravity; 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (gravity & Gravity.VERTICAL_GRAVITY_MASK) { 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.TOP: 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + lp.topMargin; 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop += maxAscent[INDEX_TOP] - childBaseline; 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.CENTER_VERTICAL: 16615b1b2417106f161e4bc66296888f4685f213eebdRomain Guy // Removed support for baseline alignment when layout_gravity or 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // gravity == center_vertical. See bug #1038483. 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep the code around if we need to re-enable this feature 16649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childBaseline != -1) { 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // // Align baselines vertically only if the child is smaller than us 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if (childSpace - childHeight > 0) { 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace / 2) - childBaseline; 16689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // childTop = paddingTop + (childSpace - childHeight) / 2; 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // } else { 16729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = paddingTop + ((childSpace - childHeight) / 2) 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + lp.topMargin - lp.bottomMargin; 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case Gravity.BOTTOM: 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop = childBottom - childHeight - lp.bottomMargin; 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childBaseline != -1) { 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int descent = child.getMeasuredHeight() - childBaseline; 16809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childTop -= (maxDescent[INDEX_BOTTOM] - descent); 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1683611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy default: 1684611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy childTop = paddingTop; 1685611cd3f4a921e2a170b670a536548e88e861f7deRomain Guy break; 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16881e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio if (hasDividerBeforeChildAt(childIndex)) { 1689696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell childLeft += mDividerWidth; 1690696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell } 1691696cba573e651b0e4f18a4718627c8ccecb3bda0Adam Powell 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += lp.leftMargin; 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildFrame(child, childLeft + getLocationOffset(child), childTop, 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth, childHeight); 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childLeft += childWidth + lp.rightMargin + 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getNextLocationOffset(child); 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16981e4cfbeba54898373c852097d1519a1d966c0854Fabrice Di Meglio i += getChildrenSkipCount(child, childIndex); 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setChildFrame(View child, int left, int top, int width, int height) { 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(left, top, left + width, top + height); 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should the layout be a column or a row. 1709d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye * @param orientation Pass {@link #HORIZONTAL} or {@link #VERTICAL}. Default 1710d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye * value is {@link #HORIZONTAL}. 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_orientation 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1714d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye public void setOrientation(@OrientationMode int orientation) { 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation != orientation) { 17169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOrientation = orientation; 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current orientation. 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return either {@link #HORIZONTAL} or {@link #VERTICAL} 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1726d9273d6f289d9b55da3fd0db2f659fdfb48106a8Tor Norbye @OrientationMode 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getOrientation() { 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOrientation; 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes how the child views are positioned. Defaults to GRAVITY_TOP. If 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this layout has a VERTICAL orientation, this controls where all the child 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views are placed if there is extra vertical space. If this layout has a 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * HORIZONTAL orientation, this controls the alignment of the children. 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param gravity See {@link android.view.Gravity} 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_gravity 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setGravity(int gravity) { 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mGravity != gravity) { 17446a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) { 17459e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio gravity |= Gravity.START; 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 17499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity |= Gravity.TOP; 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = gravity; 17539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHorizontalGravity(int horizontalGravity) { 17596a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio final int gravity = horizontalGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 17606a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio if ((mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) != gravity) { 17616a03640539405afbdefe72894759281b98aa6e6fFabrice Di Meglio mGravity = (mGravity & ~Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) | gravity; 17629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @android.view.RemotableViewMethod 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setVerticalGravity(int verticalGravity) { 17689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int gravity = verticalGravity & Gravity.VERTICAL_GRAVITY_MASK; 17699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != gravity) { 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGravity = (mGravity & ~Gravity.VERTICAL_GRAVITY_MASK) | gravity; 17719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 17729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 17779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LinearLayout.LayoutParams(getContext(), attrs); 17789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a set of layout parameters with a width of 1782980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 17839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 17849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when the layout's orientation is {@link #VERTICAL}. When the orientation is 17859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #HORIZONTAL}, the width is set to {@link LayoutParams#WRAP_CONTENT} 17869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and the height to {@link LayoutParams#WRAP_CONTENT}. 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateDefaultLayoutParams() { 17909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOrientation == HORIZONTAL) { 17919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 17929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mOrientation == VERTICAL) { 1793980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 17949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 17969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(p); 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Override to allow type-checking of LayoutParams. 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 18079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof LinearLayout.LayoutParams; 18089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18098a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 18108a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 1811a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn public CharSequence getAccessibilityClassName() { 1812a7bb6fbeab933326d58aa806d8194b7b13239d34Dianne Hackborn return LinearLayout.class.getName(); 18138a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 18148a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 18159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Per-child layout information associated with ViewLinearLayout. 18179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_weight 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#LinearLayout_Layout_layout_gravity 18209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.MarginLayoutParams { 18229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates how much of the extra space in the LinearLayout will be 18249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * allocated to the view associated with these LayoutParams. Specify 18259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 if the view should not be stretched. Otherwise the extra pixels 18269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be pro-rated among all views whose weight is greater than 0. 18279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1828bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout") 18299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float weight; 18309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gravity for the view associated with these LayoutParams. 18339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.Gravity 18359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1836bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "layout", mapping = { 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = -1, to = "NONE"), 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.NO_GRAVITY, to = "NONE"), 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.TOP, to = "TOP"), 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.BOTTOM, to = "BOTTOM"), 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.LEFT, to = "LEFT"), 18429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.RIGHT, to = "RIGHT"), 18439e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.IntToString(from = Gravity.START, to = "START"), 18449e3b002d3f9141d54948a65e0330fdcd09e75a30Fabrice Di Meglio @ViewDebug.IntToString(from = Gravity.END, to = "END"), 18459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_VERTICAL, to = "CENTER_VERTICAL"), 18469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_VERTICAL, to = "FILL_VERTICAL"), 18479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER_HORIZONTAL, to = "CENTER_HORIZONTAL"), 18489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL_HORIZONTAL, to = "FILL_HORIZONTAL"), 18499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.CENTER, to = "CENTER"), 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.IntToString(from = Gravity.FILL, to = "FILL") 18519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }) 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int gravity = -1; 18539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 18589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 18599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = 18609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project c.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout_Layout); 18619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = a.getFloat(com.android.internal.R.styleable.LinearLayout_Layout_layout_weight, 0); 18639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gravity = a.getInt(com.android.internal.R.styleable.LinearLayout_Layout_layout_gravity, -1); 18649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 18669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height) { 18729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 18739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project weight = 0; 18749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new set of layout parameters with the specified width, height 18789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and weight. 18799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1880980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param width the width, either {@link #MATCH_PARENT}, 18819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 1882980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy * @param height the height, either {@link #MATCH_PARENT}, 18839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #WRAP_CONTENT} or a fixed size in pixels 18849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param weight the weight 18859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int width, int height, float weight) { 18879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(width, height); 18889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.weight = weight; 18899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 18939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams p) { 18959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(p); 18969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 19009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19010a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette public LayoutParams(ViewGroup.MarginLayoutParams source) { 19029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 19039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19050a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette /** 19060a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * Copy constructor. Clones the width, height, margin values, weight, 19070a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * and gravity of the source. 19080a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * 19090a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette * @param source The layout params to copy from. 19100a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette */ 19110a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette public LayoutParams(LayoutParams source) { 19120a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette super(source); 19130a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette 19140a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette this.weight = source.weight; 19150a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette this.gravity = source.gravity; 19160a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette } 19170a0e155cadecd32599a7354a1836232c885f4bd2Alan Viverette 19189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 19199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String debug(String output) { 19209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return output + "LinearLayout.LayoutParams={width=" + sizeToString(width) + 19219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ", height=" + sizeToString(height) + " weight=" + weight + "}"; 19229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1925