8e5e11b99f
Adds themeable attribute support to InsetDrawable, adds support for attribute configuration changes to all themable drawables. BUG: 16045735 Change-Id: I3dc62d28801760ac69d303be81b6c78bb9bb5aca
1085 lines
34 KiB
Java
1085 lines
34 KiB
Java
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics.drawable;
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import android.annotation.NonNull;
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import android.content.res.ColorStateList;
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import android.content.res.Resources;
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import android.content.res.Resources.Theme;
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import android.content.res.TypedArray;
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import android.graphics.Canvas;
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import android.graphics.ColorFilter;
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import android.graphics.Outline;
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import android.graphics.PixelFormat;
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import android.graphics.PorterDuff.Mode;
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import android.graphics.Rect;
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import android.util.AttributeSet;
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import android.view.View;
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import com.android.internal.R;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import java.io.IOException;
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/**
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* A Drawable that manages an array of other Drawables. These are drawn in array
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* order, so the element with the largest index will be drawn on top.
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* <p>
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* It can be defined in an XML file with the <code><layer-list></code> element.
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* Each Drawable in the layer is defined in a nested <code><item></code>.
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* <p>
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* For more information, see the guide to
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* <a href="{@docRoot}guide/topics/resources/drawable-resource.html">Drawable Resources</a>.
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*
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* @attr ref android.R.styleable#LayerDrawable_paddingMode
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* @attr ref android.R.styleable#LayerDrawableItem_left
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* @attr ref android.R.styleable#LayerDrawableItem_top
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* @attr ref android.R.styleable#LayerDrawableItem_right
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* @attr ref android.R.styleable#LayerDrawableItem_bottom
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* @attr ref android.R.styleable#LayerDrawableItem_drawable
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* @attr ref android.R.styleable#LayerDrawableItem_id
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*/
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public class LayerDrawable extends Drawable implements Drawable.Callback {
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/**
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* Padding mode used to nest each layer inside the padding of the previous
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* layer.
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*
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* @see #setPaddingMode(int)
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*/
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public static final int PADDING_MODE_NEST = 0;
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/**
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* Padding mode used to stack each layer directly atop the previous layer.
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*
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* @see #setPaddingMode(int)
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*/
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public static final int PADDING_MODE_STACK = 1;
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LayerState mLayerState;
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private int mOpacityOverride = PixelFormat.UNKNOWN;
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private int[] mPaddingL;
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private int[] mPaddingT;
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private int[] mPaddingR;
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private int[] mPaddingB;
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private final Rect mTmpRect = new Rect();
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private boolean mMutated;
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/**
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* Create a new layer drawable with the list of specified layers.
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*
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* @param layers A list of drawables to use as layers in this new drawable.
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*/
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public LayerDrawable(Drawable[] layers) {
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this(layers, null);
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}
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/**
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* Create a new layer drawable with the specified list of layers and the
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* specified constant state.
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*
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* @param layers The list of layers to add to this drawable.
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* @param state The constant drawable state.
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*/
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LayerDrawable(Drawable[] layers, LayerState state) {
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this(state, null, null);
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int length = layers.length;
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ChildDrawable[] r = new ChildDrawable[length];
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for (int i = 0; i < length; i++) {
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r[i] = new ChildDrawable();
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r[i].mDrawable = layers[i];
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layers[i].setCallback(this);
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mLayerState.mChildrenChangingConfigurations |= layers[i].getChangingConfigurations();
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}
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mLayerState.mNum = length;
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mLayerState.mChildren = r;
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ensurePadding();
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}
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LayerDrawable() {
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this((LayerState) null, null, null);
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}
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LayerDrawable(LayerState state, Resources res, Theme theme) {
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final LayerState as = createConstantState(state, res);
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mLayerState = as;
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if (as.mNum > 0) {
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ensurePadding();
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}
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if (theme != null && canApplyTheme()) {
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applyTheme(theme);
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}
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}
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LayerState createConstantState(LayerState state, Resources res) {
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return new LayerState(state, this, res);
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}
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@Override
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public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs, Theme theme)
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throws XmlPullParserException, IOException {
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super.inflate(r, parser, attrs, theme);
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final TypedArray a = obtainAttributes(r, theme, attrs, R.styleable.LayerDrawable);
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updateStateFromTypedArray(a);
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a.recycle();
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inflateLayers(r, parser, attrs, theme);
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ensurePadding();
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onStateChange(getState());
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}
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/**
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* Initializes the constant state from the values in the typed array.
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*/
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private void updateStateFromTypedArray(TypedArray a) {
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final LayerState state = mLayerState;
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// Account for any configuration changes.
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state.mChangingConfigurations |= a.getChangingConfigurations();
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// Extract the theme attributes, if any.
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state.mThemeAttrs = a.extractThemeAttrs();
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mOpacityOverride = a.getInt(R.styleable.LayerDrawable_opacity, mOpacityOverride);
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state.mAutoMirrored = a.getBoolean(R.styleable.LayerDrawable_autoMirrored,
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state.mAutoMirrored);
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state.mPaddingMode = a.getInteger(R.styleable.LayerDrawable_paddingMode,
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state.mPaddingMode);
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}
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/**
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* Inflates child layers using the specified parser.
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*/
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private void inflateLayers(Resources r, XmlPullParser parser, AttributeSet attrs, Theme theme)
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throws XmlPullParserException, IOException {
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final LayerState state = mLayerState;
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final int innerDepth = parser.getDepth() + 1;
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int type;
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int depth;
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while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
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&& ((depth = parser.getDepth()) >= innerDepth || type != XmlPullParser.END_TAG)) {
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if (type != XmlPullParser.START_TAG) {
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continue;
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}
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if (depth > innerDepth || !parser.getName().equals("item")) {
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continue;
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}
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final ChildDrawable layer = new ChildDrawable();
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final TypedArray a = obtainAttributes(r, theme, attrs, R.styleable.LayerDrawableItem);
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updateLayerFromTypedArray(layer, a);
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a.recycle();
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if (layer.mDrawable == null) {
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while ((type = parser.next()) == XmlPullParser.TEXT) {
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}
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if (type != XmlPullParser.START_TAG) {
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throw new XmlPullParserException(parser.getPositionDescription()
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+ ": <item> tag requires a 'drawable' attribute or "
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+ "child tag defining a drawable");
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}
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layer.mDrawable = Drawable.createFromXmlInner(r, parser, attrs, theme);
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}
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if (layer.mDrawable != null) {
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state.mChildrenChangingConfigurations |=
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layer.mDrawable.getChangingConfigurations();
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layer.mDrawable.setCallback(this);
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}
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}
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}
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private void updateLayerFromTypedArray(ChildDrawable layer, TypedArray a) {
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final LayerState state = mLayerState;
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// Account for any configuration changes.
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state.mChildrenChangingConfigurations |= a.getChangingConfigurations();
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// Extract the theme attributes, if any.
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layer.mThemeAttrs = a.extractThemeAttrs();
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layer.mInsetL = a.getDimensionPixelOffset(
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R.styleable.LayerDrawableItem_left, layer.mInsetL);
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layer.mInsetT = a.getDimensionPixelOffset(
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R.styleable.LayerDrawableItem_top, layer.mInsetT);
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layer.mInsetR = a.getDimensionPixelOffset(
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R.styleable.LayerDrawableItem_right, layer.mInsetR);
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layer.mInsetB = a.getDimensionPixelOffset(
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R.styleable.LayerDrawableItem_bottom, layer.mInsetB);
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layer.mId = a.getResourceId(R.styleable.LayerDrawableItem_id, layer.mId);
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final Drawable dr = a.getDrawable(R.styleable.LayerDrawableItem_drawable);
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if (dr != null) {
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layer.mDrawable = dr;
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}
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}
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@Override
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public void applyTheme(Theme t) {
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super.applyTheme(t);
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final LayerState state = mLayerState;
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if (state == null) {
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return;
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}
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if (state.mThemeAttrs != null) {
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final TypedArray a = t.resolveAttributes(state.mThemeAttrs, R.styleable.LayerDrawable);
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updateStateFromTypedArray(a);
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a.recycle();
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}
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final ChildDrawable[] array = mLayerState.mChildren;
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final int N = mLayerState.mNum;
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for (int i = 0; i < N; i++) {
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final ChildDrawable layer = array[i];
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if (layer.mThemeAttrs != null) {
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final TypedArray a = t.resolveAttributes(layer.mThemeAttrs,
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R.styleable.LayerDrawableItem);
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updateLayerFromTypedArray(layer, a);
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a.recycle();
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}
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final Drawable d = layer.mDrawable;
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if (d.canApplyTheme()) {
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d.applyTheme(t);
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}
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}
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ensurePadding();
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onStateChange(getState());
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}
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@Override
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public boolean canApplyTheme() {
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final LayerState state = mLayerState;
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if (state == null) {
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return false;
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}
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if (state.mThemeAttrs != null) {
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return true;
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}
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final ChildDrawable[] array = state.mChildren;
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final int N = state.mNum;
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for (int i = 0; i < N; i++) {
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final ChildDrawable layer = array[i];
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if (layer.mThemeAttrs != null || layer.mDrawable.canApplyTheme()) {
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return true;
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}
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}
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return false;
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}
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/**
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* @hide
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*/
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@Override
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public boolean isProjected() {
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if (super.isProjected()) {
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return true;
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}
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final ChildDrawable[] layers = mLayerState.mChildren;
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final int N = mLayerState.mNum;
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for (int i = 0; i < N; i++) {
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if (layers[i].mDrawable.isProjected()) {
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return true;
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}
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}
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return false;
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}
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void addLayer(ChildDrawable layer) {
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final LayerState st = mLayerState;
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final int N = st.mChildren != null ? st.mChildren.length : 0;
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final int i = st.mNum;
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if (i >= N) {
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final ChildDrawable[] nu = new ChildDrawable[N + 10];
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if (i > 0) {
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System.arraycopy(st.mChildren, 0, nu, 0, i);
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}
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st.mChildren = nu;
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}
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st.mChildren[i] = layer;
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st.mNum++;
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st.invalidateCache();
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}
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/**
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* Add a new layer to this drawable. The new layer is identified by an id.
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*
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* @param layer The drawable to add as a layer.
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* @param themeAttrs Theme attributes extracted from the layer.
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* @param id The id of the new layer.
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* @param left The left padding of the new layer.
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* @param top The top padding of the new layer.
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* @param right The right padding of the new layer.
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* @param bottom The bottom padding of the new layer.
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*/
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ChildDrawable addLayer(Drawable layer, int[] themeAttrs, int id, int left, int top, int right,
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int bottom) {
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final ChildDrawable childDrawable = new ChildDrawable();
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childDrawable.mId = id;
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childDrawable.mThemeAttrs = themeAttrs;
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childDrawable.mDrawable = layer;
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childDrawable.mDrawable.setAutoMirrored(isAutoMirrored());
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childDrawable.mInsetL = left;
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childDrawable.mInsetT = top;
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childDrawable.mInsetR = right;
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childDrawable.mInsetB = bottom;
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addLayer(childDrawable);
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mLayerState.mChildrenChangingConfigurations |= layer.getChangingConfigurations();
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layer.setCallback(this);
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return childDrawable;
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}
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/**
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* Looks for a layer with the given ID and returns its {@link Drawable}.
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* <p>
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* If multiple layers are found for the given ID, returns the
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* {@link Drawable} for the matching layer at the highest index.
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*
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* @param id The layer ID to search for.
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* @return The {@link Drawable} for the highest-indexed layer that has the
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* given ID, or null if not found.
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*/
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public Drawable findDrawableByLayerId(int id) {
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final ChildDrawable[] layers = mLayerState.mChildren;
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for (int i = mLayerState.mNum - 1; i >= 0; i--) {
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if (layers[i].mId == id) {
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return layers[i].mDrawable;
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}
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}
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return null;
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}
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/**
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* Sets the ID of a layer.
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*
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* @param index The index of the layer which will received the ID.
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* @param id The ID to assign to the layer.
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*/
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public void setId(int index, int id) {
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mLayerState.mChildren[index].mId = id;
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}
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/**
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* Returns the number of layers contained within this.
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* @return The number of layers.
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*/
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public int getNumberOfLayers() {
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return mLayerState.mNum;
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}
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/**
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* Returns the drawable at the specified layer index.
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*
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* @param index The layer index of the drawable to retrieve.
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*
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* @return The {@link android.graphics.drawable.Drawable} at the specified layer index.
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*/
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public Drawable getDrawable(int index) {
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return mLayerState.mChildren[index].mDrawable;
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}
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/**
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* Returns the id of the specified layer.
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*
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* @param index The index of the layer.
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*
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* @return The id of the layer or {@link android.view.View#NO_ID} if the layer has no id.
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*/
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public int getId(int index) {
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return mLayerState.mChildren[index].mId;
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}
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/**
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* Sets (or replaces) the {@link Drawable} for the layer with the given id.
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*
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* @param id The layer ID to search for.
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* @param drawable The replacement {@link Drawable}.
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* @return Whether the {@link Drawable} was replaced (could return false if
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* the id was not found).
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*/
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public boolean setDrawableByLayerId(int id, Drawable drawable) {
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final ChildDrawable[] layers = mLayerState.mChildren;
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final int N = mLayerState.mNum;
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for (int i = 0; i < N; i++) {
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final ChildDrawable childDrawable = layers[i];
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if (childDrawable.mId == id) {
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if (childDrawable.mDrawable != null) {
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if (drawable != null) {
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final Rect bounds = childDrawable.mDrawable.getBounds();
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drawable.setBounds(bounds);
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}
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childDrawable.mDrawable.setCallback(null);
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}
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if (drawable != null) {
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drawable.setCallback(this);
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}
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childDrawable.mDrawable = drawable;
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mLayerState.invalidateCache();
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return true;
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}
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}
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return false;
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}
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/**
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* Specifies the insets in pixels for the drawable at the specified index.
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*
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* @param index the index of the drawable to adjust
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* @param l number of pixels to add to the left bound
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* @param t number of pixels to add to the top bound
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* @param r number of pixels to subtract from the right bound
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* @param b number of pixels to subtract from the bottom bound
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*/
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public void setLayerInset(int index, int l, int t, int r, int b) {
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final ChildDrawable childDrawable = mLayerState.mChildren[index];
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childDrawable.mInsetL = l;
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childDrawable.mInsetT = t;
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childDrawable.mInsetR = r;
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childDrawable.mInsetB = b;
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}
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/**
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* Specifies how layer padding should affect the bounds of subsequent
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* layers. The default value is {@link #PADDING_MODE_NEST}.
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*
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* @param mode padding mode, one of:
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* <ul>
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* <li>{@link #PADDING_MODE_NEST} to nest each layer inside the
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* padding of the previous layer
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* <li>{@link #PADDING_MODE_STACK} to stack each layer directly
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* atop the previous layer
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* </ul>
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*
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* @see #getPaddingMode()
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* @attr ref android.R.styleable#LayerDrawable_paddingMode
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*/
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public void setPaddingMode(int mode) {
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if (mLayerState.mPaddingMode != mode) {
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mLayerState.mPaddingMode = mode;
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}
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}
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/**
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* @return the current padding mode
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*
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* @see #setPaddingMode(int)
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* @attr ref android.R.styleable#LayerDrawable_paddingMode
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*/
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public int getPaddingMode() {
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return mLayerState.mPaddingMode;
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}
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@Override
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public void invalidateDrawable(Drawable who) {
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invalidateSelf();
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}
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@Override
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public void scheduleDrawable(Drawable who, Runnable what, long when) {
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scheduleSelf(what, when);
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}
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@Override
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public void unscheduleDrawable(Drawable who, Runnable what) {
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unscheduleSelf(what);
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}
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@Override
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public void draw(Canvas canvas) {
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final ChildDrawable[] array = mLayerState.mChildren;
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final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.draw(canvas);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int getChangingConfigurations() {
|
|
return super.getChangingConfigurations()
|
|
| mLayerState.mChangingConfigurations
|
|
| mLayerState.mChildrenChangingConfigurations;
|
|
}
|
|
|
|
@Override
|
|
public boolean getPadding(Rect padding) {
|
|
if (mLayerState.mPaddingMode == PADDING_MODE_NEST) {
|
|
computeNestedPadding(padding);
|
|
} else {
|
|
computeStackedPadding(padding);
|
|
}
|
|
|
|
return padding.left != 0 || padding.top != 0 || padding.right != 0 || padding.bottom != 0;
|
|
}
|
|
|
|
private void computeNestedPadding(Rect padding) {
|
|
padding.left = 0;
|
|
padding.top = 0;
|
|
padding.right = 0;
|
|
padding.bottom = 0;
|
|
|
|
// Add all the padding.
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
refreshChildPadding(i, array[i]);
|
|
|
|
padding.left += mPaddingL[i];
|
|
padding.top += mPaddingT[i];
|
|
padding.right += mPaddingR[i];
|
|
padding.bottom += mPaddingB[i];
|
|
}
|
|
}
|
|
|
|
private void computeStackedPadding(Rect padding) {
|
|
padding.left = 0;
|
|
padding.top = 0;
|
|
padding.right = 0;
|
|
padding.bottom = 0;
|
|
|
|
// Take the max padding.
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
refreshChildPadding(i, array[i]);
|
|
|
|
padding.left = Math.max(padding.left, mPaddingL[i]);
|
|
padding.top = Math.max(padding.top, mPaddingT[i]);
|
|
padding.right = Math.max(padding.right, mPaddingR[i]);
|
|
padding.bottom = Math.max(padding.bottom, mPaddingB[i]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Populates <code>outline</code> with the first available layer outline.
|
|
* Returns <code>true</code> if an outline is available, <code>false</code>
|
|
* otherwise.
|
|
*
|
|
* @param outline Outline in which to place the first available layer outline
|
|
* @return <code>true</code> if an outline is available
|
|
*/
|
|
@Override
|
|
public boolean getOutline(@NonNull Outline outline) {
|
|
final LayerState state = mLayerState;
|
|
final ChildDrawable[] children = state.mChildren;
|
|
final int N = state.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
if (children[i].mDrawable.getOutline(outline)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public void setHotspot(float x, float y) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setHotspot(x, y);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setHotspotBounds(int left, int top, int right, int bottom) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setHotspotBounds(left, top, right, bottom);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean setVisible(boolean visible, boolean restart) {
|
|
final boolean changed = super.setVisible(visible, restart);
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setVisible(visible, restart);
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
@Override
|
|
public void setDither(boolean dither) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setDither(dither);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setAlpha(int alpha) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setAlpha(alpha);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int getAlpha() {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
if (mLayerState.mNum > 0) {
|
|
// All layers should have the same alpha set on them - just return
|
|
// the first one
|
|
return array[0].mDrawable.getAlpha();
|
|
} else {
|
|
return super.getAlpha();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setColorFilter(ColorFilter cf) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setColorFilter(cf);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setTint(ColorStateList tint, Mode tintMode) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setTint(tint, tintMode);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the opacity of this drawable directly, instead of collecting the
|
|
* states from the layers
|
|
*
|
|
* @param opacity The opacity to use, or {@link PixelFormat#UNKNOWN
|
|
* PixelFormat.UNKNOWN} for the default behavior
|
|
* @see PixelFormat#UNKNOWN
|
|
* @see PixelFormat#TRANSLUCENT
|
|
* @see PixelFormat#TRANSPARENT
|
|
* @see PixelFormat#OPAQUE
|
|
*/
|
|
public void setOpacity(int opacity) {
|
|
mOpacityOverride = opacity;
|
|
}
|
|
|
|
@Override
|
|
public int getOpacity() {
|
|
if (mOpacityOverride != PixelFormat.UNKNOWN) {
|
|
return mOpacityOverride;
|
|
}
|
|
return mLayerState.getOpacity();
|
|
}
|
|
|
|
@Override
|
|
public void setAutoMirrored(boolean mirrored) {
|
|
mLayerState.mAutoMirrored = mirrored;
|
|
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setAutoMirrored(mirrored);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean isAutoMirrored() {
|
|
return mLayerState.mAutoMirrored;
|
|
}
|
|
|
|
@Override
|
|
public boolean isStateful() {
|
|
return mLayerState.isStateful();
|
|
}
|
|
|
|
@Override
|
|
protected boolean onStateChange(int[] state) {
|
|
boolean paddingChanged = false;
|
|
boolean changed = false;
|
|
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
final ChildDrawable r = array[i];
|
|
if (r.mDrawable.isStateful() && r.mDrawable.setState(state)) {
|
|
changed = true;
|
|
}
|
|
|
|
if (refreshChildPadding(i, r)) {
|
|
paddingChanged = true;
|
|
}
|
|
}
|
|
|
|
if (paddingChanged) {
|
|
onBoundsChange(getBounds());
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
@Override
|
|
protected boolean onLevelChange(int level) {
|
|
boolean paddingChanged = false;
|
|
boolean changed = false;
|
|
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
final ChildDrawable r = array[i];
|
|
if (r.mDrawable.setLevel(level)) {
|
|
changed = true;
|
|
}
|
|
|
|
if (refreshChildPadding(i, r)) {
|
|
paddingChanged = true;
|
|
}
|
|
}
|
|
|
|
if (paddingChanged) {
|
|
onBoundsChange(getBounds());
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
@Override
|
|
protected void onBoundsChange(Rect bounds) {
|
|
int padL = 0;
|
|
int padT = 0;
|
|
int padR = 0;
|
|
int padB = 0;
|
|
|
|
final boolean nest = mLayerState.mPaddingMode == PADDING_MODE_NEST;
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
final ChildDrawable r = array[i];
|
|
r.mDrawable.setBounds(bounds.left + r.mInsetL + padL, bounds.top + r.mInsetT + padT,
|
|
bounds.right - r.mInsetR - padR, bounds.bottom - r.mInsetB - padB);
|
|
|
|
if (nest) {
|
|
padL += mPaddingL[i];
|
|
padR += mPaddingR[i];
|
|
padT += mPaddingT[i];
|
|
padB += mPaddingB[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int getIntrinsicWidth() {
|
|
int width = -1;
|
|
int padL = 0;
|
|
int padR = 0;
|
|
|
|
final boolean nest = mLayerState.mPaddingMode == PADDING_MODE_NEST;
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
final ChildDrawable r = array[i];
|
|
final int w = r.mDrawable.getIntrinsicWidth() + r.mInsetL + r.mInsetR + padL + padR;
|
|
if (w > width) {
|
|
width = w;
|
|
}
|
|
|
|
if (nest) {
|
|
padL += mPaddingL[i];
|
|
padR += mPaddingR[i];
|
|
}
|
|
}
|
|
|
|
return width;
|
|
}
|
|
|
|
@Override
|
|
public int getIntrinsicHeight() {
|
|
int height = -1;
|
|
int padT = 0;
|
|
int padB = 0;
|
|
|
|
final boolean nest = mLayerState.mPaddingMode == PADDING_MODE_NEST;
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
final ChildDrawable r = array[i];
|
|
int h = r.mDrawable.getIntrinsicHeight() + r.mInsetT + r.mInsetB + padT + padB;
|
|
if (h > height) {
|
|
height = h;
|
|
}
|
|
|
|
if (nest) {
|
|
padT += mPaddingT[i];
|
|
padB += mPaddingB[i];
|
|
}
|
|
}
|
|
|
|
return height;
|
|
}
|
|
|
|
/**
|
|
* Refreshes the cached padding values for the specified child.
|
|
*
|
|
* @return true if the child's padding has changed
|
|
*/
|
|
private boolean refreshChildPadding(int i, ChildDrawable r) {
|
|
final Rect rect = mTmpRect;
|
|
r.mDrawable.getPadding(rect);
|
|
if (rect.left != mPaddingL[i] || rect.top != mPaddingT[i] ||
|
|
rect.right != mPaddingR[i] || rect.bottom != mPaddingB[i]) {
|
|
mPaddingL[i] = rect.left;
|
|
mPaddingT[i] = rect.top;
|
|
mPaddingR[i] = rect.right;
|
|
mPaddingB[i] = rect.bottom;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Ensures the child padding caches are large enough.
|
|
*/
|
|
void ensurePadding() {
|
|
final int N = mLayerState.mNum;
|
|
if (mPaddingL != null && mPaddingL.length >= N) {
|
|
return;
|
|
}
|
|
|
|
mPaddingL = new int[N];
|
|
mPaddingT = new int[N];
|
|
mPaddingR = new int[N];
|
|
mPaddingB = new int[N];
|
|
}
|
|
|
|
@Override
|
|
public ConstantState getConstantState() {
|
|
if (mLayerState.canConstantState()) {
|
|
mLayerState.mChangingConfigurations = getChangingConfigurations();
|
|
return mLayerState;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
@Override
|
|
public Drawable mutate() {
|
|
if (!mMutated && super.mutate() == this) {
|
|
mLayerState = createConstantState(mLayerState, null);
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.mutate();
|
|
}
|
|
mMutated = true;
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/** @hide */
|
|
@Override
|
|
public void setLayoutDirection(int layoutDirection) {
|
|
final ChildDrawable[] array = mLayerState.mChildren;
|
|
final int N = mLayerState.mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
array[i].mDrawable.setLayoutDirection(layoutDirection);
|
|
}
|
|
super.setLayoutDirection(layoutDirection);
|
|
}
|
|
|
|
static class ChildDrawable {
|
|
public Drawable mDrawable;
|
|
public int[] mThemeAttrs;
|
|
public int mInsetL, mInsetT, mInsetR, mInsetB;
|
|
public int mId = View.NO_ID;
|
|
|
|
ChildDrawable() {
|
|
// Default empty constructor.
|
|
}
|
|
|
|
ChildDrawable(ChildDrawable or, LayerDrawable owner, Resources res) {
|
|
if (res != null) {
|
|
mDrawable = or.mDrawable.getConstantState().newDrawable(res);
|
|
} else {
|
|
mDrawable = or.mDrawable.getConstantState().newDrawable();
|
|
}
|
|
mDrawable.setCallback(owner);
|
|
mDrawable.setLayoutDirection(or.mDrawable.getLayoutDirection());
|
|
mThemeAttrs = or.mThemeAttrs;
|
|
mInsetL = or.mInsetL;
|
|
mInsetT = or.mInsetT;
|
|
mInsetR = or.mInsetR;
|
|
mInsetB = or.mInsetB;
|
|
mId = or.mId;
|
|
}
|
|
}
|
|
|
|
static class LayerState extends ConstantState {
|
|
int mNum;
|
|
ChildDrawable[] mChildren;
|
|
int[] mThemeAttrs;
|
|
|
|
int mChangingConfigurations;
|
|
int mChildrenChangingConfigurations;
|
|
|
|
private boolean mHaveOpacity;
|
|
private int mOpacity;
|
|
|
|
private boolean mHaveIsStateful;
|
|
private boolean mIsStateful;
|
|
|
|
private boolean mAutoMirrored = false;
|
|
|
|
private int mPaddingMode = PADDING_MODE_NEST;
|
|
|
|
LayerState(LayerState orig, LayerDrawable owner, Resources res) {
|
|
if (orig != null) {
|
|
final ChildDrawable[] origChildDrawable = orig.mChildren;
|
|
final int N = orig.mNum;
|
|
|
|
mNum = N;
|
|
mChildren = new ChildDrawable[N];
|
|
|
|
mChangingConfigurations = orig.mChangingConfigurations;
|
|
mChildrenChangingConfigurations = orig.mChildrenChangingConfigurations;
|
|
|
|
for (int i = 0; i < N; i++) {
|
|
final ChildDrawable or = origChildDrawable[i];
|
|
mChildren[i] = new ChildDrawable(or, owner, res);
|
|
}
|
|
|
|
mHaveOpacity = orig.mHaveOpacity;
|
|
mOpacity = orig.mOpacity;
|
|
mHaveIsStateful = orig.mHaveIsStateful;
|
|
mIsStateful = orig.mIsStateful;
|
|
mAutoMirrored = orig.mAutoMirrored;
|
|
mPaddingMode = orig.mPaddingMode;
|
|
mThemeAttrs = orig.mThemeAttrs;
|
|
} else {
|
|
mNum = 0;
|
|
mChildren = null;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean canApplyTheme() {
|
|
return mThemeAttrs != null;
|
|
}
|
|
|
|
@Override
|
|
public Drawable newDrawable() {
|
|
return new LayerDrawable(this, null, null);
|
|
}
|
|
|
|
@Override
|
|
public Drawable newDrawable(Resources res) {
|
|
return new LayerDrawable(this, res, null);
|
|
}
|
|
|
|
@Override
|
|
public Drawable newDrawable(Resources res, Theme theme) {
|
|
return new LayerDrawable(this, res, theme);
|
|
}
|
|
|
|
@Override
|
|
public int getChangingConfigurations() {
|
|
return mChangingConfigurations;
|
|
}
|
|
|
|
public final int getOpacity() {
|
|
if (mHaveOpacity) {
|
|
return mOpacity;
|
|
}
|
|
|
|
final ChildDrawable[] array = mChildren;
|
|
final int N = mNum;
|
|
int op = N > 0 ? array[0].mDrawable.getOpacity() : PixelFormat.TRANSPARENT;
|
|
for (int i = 1; i < N; i++) {
|
|
op = Drawable.resolveOpacity(op, array[i].mDrawable.getOpacity());
|
|
}
|
|
|
|
mOpacity = op;
|
|
mHaveOpacity = true;
|
|
return op;
|
|
}
|
|
|
|
public final boolean isStateful() {
|
|
if (mHaveIsStateful) {
|
|
return mIsStateful;
|
|
}
|
|
|
|
final ChildDrawable[] array = mChildren;
|
|
final int N = mNum;
|
|
boolean isStateful = false;
|
|
for (int i = 0; i < N; i++) {
|
|
if (array[i].mDrawable.isStateful()) {
|
|
isStateful = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
mIsStateful = isStateful;
|
|
mHaveIsStateful = true;
|
|
return isStateful;
|
|
}
|
|
|
|
public final boolean canConstantState() {
|
|
final ChildDrawable[] array = mChildren;
|
|
final int N = mNum;
|
|
for (int i = 0; i < N; i++) {
|
|
if (array[i].mDrawable.getConstantState() == null) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Don't cache the result, this method is not called very often.
|
|
return true;
|
|
}
|
|
|
|
public void invalidateCache() {
|
|
mHaveOpacity = false;
|
|
mHaveIsStateful = false;
|
|
}
|
|
}
|
|
}
|
|
|