/*
* Copyright (C) 2016 Bilibili
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bilibili.magicasakura.utils;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.util.AttributeSet;
import com.wm.remusic.R;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
/**
* @author xyczero617@gmail.com
* @time 16/3/17
*/
public class LayerDrawableUtils extends DrawableUtils {
private static final int STEP = 1;
private static final int[] ATTRS = new int[]{
android.R.attr.left, android.R.attr.top, android.R.attr.right,
android.R.attr.bottom, android.R.attr.id};
@Override
protected Drawable inflateDrawable(Context context, XmlPullParser parser, AttributeSet attrs) throws IOException, XmlPullParserException {
final int innerDepth = parser.getDepth() + 1;
int type;
int depth;
int layerAttrUseCount = 0;
int drawableUseCount = 0;
int space = STEP << 1;
//L,T,R,B,S,E,id
int[][] childLayersAttrs = new int[space][ATTRS.length];
Drawable[] drawables = new Drawable[space];
while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
&& ((depth = parser.getDepth()) >= innerDepth || type != XmlPullParser.END_TAG)) {
if (type != XmlPullParser.START_TAG) {
continue;
}
if (depth > innerDepth || !parser.getName().equals("item")) {
continue;
}
if (layerAttrUseCount >= childLayersAttrs.length) {
int[][] dstInt = new int[drawables.length + STEP][ATTRS.length];
System.arraycopy(childLayersAttrs, 0, dstInt, 0, childLayersAttrs.length);
childLayersAttrs = dstInt;
}
updateLayerAttrs(context, attrs, childLayersAttrs[layerAttrUseCount]);
layerAttrUseCount++;
Drawable drawable = getAttrDrawable(context, attrs, android.R.attr.drawable);
// If the layer doesn't have a drawable or unresolved theme
// attribute for a drawable, attempt to parse one from the child
// element.
if (drawable == null) {
while ((type = parser.next()) == XmlPullParser.TEXT) {
}
if (type != XmlPullParser.START_TAG) {
throw new XmlPullParserException(parser.getPositionDescription()
+ ": <item> tag requires a 'drawable' attribute or "
+ "child tag defining a drawable");
}
drawable = createFromXmlInner(context, parser, attrs);
} else {
final ColorStateList cls = getTintColorList(context, attrs, R.attr.drawableTint);
if (cls != null) {
drawable = ThemeUtils.tintDrawable(drawable, cls, getTintMode(context, attrs, R.attr.drawableTintMode));
}
}
if (drawable != null) {
if (drawableUseCount >= drawables.length) {
Drawable[] dst = new Drawable[drawables.length + STEP];
System.arraycopy(drawables, 0, dst, 0, drawables.length);
drawables = dst;
}
drawables[drawableUseCount] = drawable;
drawableUseCount++;
}
}
if (drawables[0] == null || drawableUseCount != layerAttrUseCount) {
return null;
} else {
LayerDrawable layerDrawable = new LayerDrawable(drawables);
for (int i = 0; i < drawables.length; i++) {
int[] childLayersAttr = childLayersAttrs[i];
if (childLayersAttr[0] != 0 || childLayersAttr[1] != 0 || childLayersAttr[2] != 0 || childLayersAttr[3] != 0) {
layerDrawable.setLayerInset(i, childLayersAttr[0], childLayersAttr[1], childLayersAttr[2], childLayersAttr[3]);
}
if (childLayersAttr[4] != 0) {
layerDrawable.setId(i, childLayersAttr[4]);
}
}
return layerDrawable;
}
}
void updateLayerAttrs(Context context, AttributeSet attrs, int[] childLayersAttrs) {
childLayersAttrs[0] = getAttrDimensionPixelOffset(context, attrs, ATTRS[0]);
childLayersAttrs[1] = getAttrDimensionPixelOffset(context, attrs, ATTRS[1]);
childLayersAttrs[2] = getAttrDimensionPixelOffset(context, attrs, ATTRS[2]);
childLayersAttrs[3] = getAttrDimensionPixelOffset(context, attrs, ATTRS[3]);
childLayersAttrs[4] = getAttrResourceId(context, attrs, ATTRS[4], 0);
}
}