StateListDrawable.java revision 39e33621a725bcdaa21a723866e53c6ea3356169
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.graphics.drawable; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viveretteimport com.android.internal.R; 20ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport org.xmlpull.v1.XmlPullParser; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport org.xmlpull.v1.XmlPullParserException; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.IOException; 25079e23575024e103358c982152afb7a720ae1a8aDianne Hackbornimport java.util.Arrays; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.Resources; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 2952b999f0721b53e9c6e18a4bd664e89aeb65b2d5Alan Viveretteimport android.content.res.Resources.Theme; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.StateSet; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Lets you assign a number of graphic images to a single Drawable and swap out the visible item by a string 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * ID value. 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p/> 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>It can be defined in an XML file with the <code><selector></code> element. 38dfe5c204403bc56c29bb36410574eab8b1950417Scott Main * Each state Drawable is defined in a nested <code><item></code> element. For more 39dfe5c204403bc56c29bb36410574eab8b1950417Scott Main * information, see the guide to <a 40dfe5c204403bc56c29bb36410574eab8b1950417Scott Main * href="{@docRoot}guide/topics/resources/drawable-resource.html">Drawable Resources</a>.</p> 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#StateListDrawable_visible 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#StateListDrawable_variablePadding 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#StateListDrawable_constantSize 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_focused 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_window_focused 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_enabled 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_checkable 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_checked 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_selected 51079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn * @attr ref android.R.styleable#DrawableStates_state_activated 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_active 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_single 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_first 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_middle 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_last 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#DrawableStates_state_pressed 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class StateListDrawable extends DrawableContainer { 605e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette private static final String TAG = StateListDrawable.class.getSimpleName(); 615e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette 62079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn private static final boolean DEBUG = false; 63079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn 64211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed /** 65211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * To be proper, we should have a getter for dither (and alpha, etc.) 66211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * so that proxy classes like this can save/restore their delegates' 67211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * values, but we don't have getters. Since we do have setters 68211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * (e.g. setDither), which this proxy forwards on, we have to have some 69211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * default/initial setting. 70211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * 71211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * The initial setting for dither is now true, since it almost always seems 72211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed * to improve the quality at negligible cost. 73211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed */ 74211db4a2874f1a2d0e7a8cb8d33e81fa08801763Mike Reed private static final boolean DEFAULT_DITHER = true; 755e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette 765e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette private StateListState mStateListState; 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mMutated; 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StateListDrawable() { 80c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn this(null, null); 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a new image/string ID to the set of images. 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stateSet - An array of resource Ids to associate with the image. 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Switch to this image by calling setState(). 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param drawable -The image to show. 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addState(int[] stateSet, Drawable drawable) { 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (drawable != null) { 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateListState.addStateSet(stateSet, drawable); 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in case the new state matches our current state... 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project onStateChange(getState()); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isStateful() { 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean onStateChange(int[] stateSet) { 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int idx = mStateListState.indexOfStateSet(stateSet); 106079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn if (DEBUG) android.util.Log.i(TAG, "onStateChange " + this + " states " 107079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn + Arrays.toString(stateSet) + " found " + idx); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (idx < 0) { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project idx = mStateListState.indexOfStateSet(StateSet.WILD_CARD); 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectDrawable(idx)) { 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onStateChange(stateSet); 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11852b999f0721b53e9c6e18a4bd664e89aeb65b2d5Alan Viverette public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs, Theme theme) 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws XmlPullParserException, IOException { 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12139e33621a725bcdaa21a723866e53c6ea3356169Alan Viverette final TypedArray a = obtainAttributes(r, theme, attrs, R.styleable.StateListDrawable); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.inflateWithAttributes(r, parser, a, 124ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette R.styleable.StateListDrawable_visible); 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateListState.setVariablePadding(a.getBoolean( 127ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette R.styleable.StateListDrawable_variablePadding, false)); 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateListState.setConstantSize(a.getBoolean( 129ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette R.styleable.StateListDrawable_constantSize, false)); 130079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn mStateListState.setEnterFadeDuration(a.getInt( 131ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette R.styleable.StateListDrawable_enterFadeDuration, 0)); 132079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn mStateListState.setExitFadeDuration(a.getInt( 133ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette R.styleable.StateListDrawable_exitFadeDuration, 0)); 1346afa16feb32d44c4977b3eb6007246a99f22fdbfJeff Sharkey 135ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette setDither(a.getBoolean(R.styleable.StateListDrawable_dither, DEFAULT_DITHER)); 136ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette setAutoMirrored(a.getBoolean(R.styleable.StateListDrawable_autoMirrored, false)); 1373f5a90b2fbba2a83a8a2c5babd5d466a5e0ad2aaFabrice Di Meglio 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int innerDepth = parser.getDepth() + 1; 141ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette int type; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int depth; 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && ((depth = parser.getDepth()) >= innerDepth 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || type != XmlPullParser.END_TAG)) { 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (type != XmlPullParser.START_TAG) { 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (depth > innerDepth || !parser.getName().equals("item")) { 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int drawableRes = 0; 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int i; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int j = 0; 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numAttrs = attrs.getAttributeCount(); 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] states = new int[numAttrs]; 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (i = 0; i < numAttrs; i++) { 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int stateResId = attrs.getAttributeNameResource(i); 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stateResId == 0) break; 163ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette if (stateResId == R.attr.drawable) { 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project drawableRes = attrs.getAttributeResourceValue(i, 0); 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project states[j++] = attrs.getAttributeBooleanValue(i, false) 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ? stateResId 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : -stateResId; 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project states = StateSet.trimStateSet(states, j); 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 173ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette final Drawable dr; 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (drawableRes != 0) { 175ad55abdc748f2cba6955e9e60cf7964dc027f2b5Alan Viverette dr = r.getDrawable(drawableRes, theme); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while ((type = parser.next()) == XmlPullParser.TEXT) { 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (type != XmlPullParser.START_TAG) { 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new XmlPullParserException( 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project parser.getPositionDescription() 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + ": <item> tag requires a 'drawable' attribute or " 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "child tag defining a drawable"); 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1856dbe51b50e82057af4d29882889444d22ac19c9cAlan Viverette dr = Drawable.createFromXmlInner(r, parser, attrs, theme); 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateListState.addStateSet(states, dr); 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project onStateChange(getState()); 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StateListState getStateListState() { 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mStateListState; 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the number of states contained in this drawable. 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The number of states contained in this drawable. 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide pending API council 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateSet(int) 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateDrawable(int) 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getStateCount() { 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mStateListState.getChildCount(); 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the state set at an index. 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index The index of the state set. 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The state set at the index. 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide pending API council 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateCount() 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateDrawable(int) 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int[] getStateSet(int index) { 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mStateListState.mStateSets[index]; 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the drawable at an index. 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index The index of the drawable. 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The drawable at the index. 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide pending API council 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateCount() 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateSet(int) 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Drawable getStateDrawable(int index) { 23372146433322588c1116ee06c27ac758ad09d869cAlan Viverette return mStateListState.getChild(index); 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 235b3c56086d802ae28888dd97ba1f49bd6cee0b673Alan Viverette 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the index of the drawable with the provided state set. 238b3c56086d802ae28888dd97ba1f49bd6cee0b673Alan Viverette * 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stateSet the state set to look up 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the index of the provided state set, or -1 if not found 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide pending API council 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateDrawable(int) 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getStateSet(int) 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getStateDrawableIndex(int[] stateSet) { 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mStateListState.indexOfStateSet(stateSet); 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 248b3c56086d802ae28888dd97ba1f49bd6cee0b673Alan Viverette 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Drawable mutate() { 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mMutated && super.mutate() == this) { 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[][] sets = mStateListState.mStateSets; 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = sets.length; 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateListState.mStateSets = new int[count][]; 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 2562b95c2413838c2e2b127ebab8fb4fead7d52e460Jeff Sharkey final int[] set = sets[i]; 2572b95c2413838c2e2b127ebab8fb4fead7d52e460Jeff Sharkey if (set != null) { 2582b95c2413838c2e2b127ebab8fb4fead7d52e460Jeff Sharkey mStateListState.mStateSets[i] = set.clone(); 2592b95c2413838c2e2b127ebab8fb4fead7d52e460Jeff Sharkey } 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMutated = true; 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return this; 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 266fc4947491f785600b8770112fa1d19ece06d42f9Dianne Hackborn /** @hide */ 2670af4b8b0c8b038bca9b4f60eb81f71e186f471ceFabrice Di Meglio @Override 2680af4b8b0c8b038bca9b4f60eb81f71e186f471ceFabrice Di Meglio public void setLayoutDirection(int layoutDirection) { 2690af4b8b0c8b038bca9b4f60eb81f71e186f471ceFabrice Di Meglio super.setLayoutDirection(layoutDirection); 270f390f770ee570f1f4def41b165cb9492e381be40Alan Viverette 271f390f770ee570f1f4def41b165cb9492e381be40Alan Viverette // Let the container handle setting its own layout direction. Otherwise, 272f390f770ee570f1f4def41b165cb9492e381be40Alan Viverette // we're accessing potentially unused states. 273f390f770ee570f1f4def41b165cb9492e381be40Alan Viverette mStateListState.setLayoutDirection(layoutDirection); 2740af4b8b0c8b038bca9b4f60eb81f71e186f471ceFabrice Di Meglio } 2750af4b8b0c8b038bca9b4f60eb81f71e186f471ceFabrice Di Meglio 2765e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette static class StateListState extends DrawableContainerState { 277079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn int[][] mStateSets; 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn StateListState(StateListState orig, StateListDrawable owner, Resources res) { 280c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn super(orig, owner, res); 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (orig != null) { 28372146433322588c1116ee06c27ac758ad09d869cAlan Viverette mStateSets = Arrays.copyOf(orig.mStateSets, orig.mStateSets.length); 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 28572146433322588c1116ee06c27ac758ad09d869cAlan Viverette mStateSets = new int[getCapacity()][]; 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int addStateSet(int[] stateSet, Drawable drawable) { 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int pos = addChild(drawable); 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateSets[pos] = stateSet; 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return pos; 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2955e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette int indexOfStateSet(int[] stateSet) { 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[][] stateSets = mStateSets; 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int N = getChildCount(); 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < N; i++) { 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (StateSet.stateSetMatches(stateSets[i], stateSet)) { 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return i; 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Drawable newDrawable() { 308c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn return new StateListDrawable(this, null); 309c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn } 310c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn 311c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn @Override 312c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn public Drawable newDrawable(Resources res) { 313c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn return new StateListDrawable(this, res); 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void growArray(int oldSize, int newSize) { 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.growArray(oldSize, newSize); 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[][] newStateSets = new int[newSize][]; 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project System.arraycopy(mStateSets, 0, newStateSets, 0, oldSize); 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStateSets = newStateSets; 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3255e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette void setConstantState(StateListState state) { 3265e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette super.setConstantState(state); 3275e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette 3285e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette mStateListState = state; 3295e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette } 3305e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette 331c2974809373697147cbe5754835cc871fb93aef1Dianne Hackborn private StateListDrawable(StateListState state, Resources res) { 3325e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette final StateListState newState = new StateListState(state, this, res); 3335e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette setConstantState(newState); 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project onStateChange(getState()); 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3365e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette 3375e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette /** 3385e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette * This constructor exists so subclasses can avoid calling the default 3395e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette * constructor and setting up a StateListDrawable-specific constant state. 3405e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette */ 3415e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette StateListDrawable(StateListState state) { 3425e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette if (state != null) { 3435e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette setConstantState(state); 3445e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette } 3455e92c95d847a68178cf6099c801f82dcb7e4fa47Alan Viverette } 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 348