94 lines
2.7 KiB
Java
94 lines
2.7 KiB
Java
/*
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* Copyright 2010, 2011, 2012 mapsforge.org
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*
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* This program is free software: you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.oscim.theme.renderinstruction;
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import java.io.IOException;
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import org.oscim.core.Tag;
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import org.oscim.theme.IRenderCallback;
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import org.oscim.theme.RenderThemeHandler;
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import org.xml.sax.Attributes;
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import android.graphics.Bitmap;
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/**
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* Represents an icon along a polyline on the map.
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*/
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public final class LineSymbol extends RenderInstruction {
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/**
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* @param elementName
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* the name of the XML element.
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* @param attributes
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* the attributes of the XML element.
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* @return a new LineSymbol with the given rendering attributes.
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* @throws IOException
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* if an I/O error occurs while reading a resource.
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*/
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public static LineSymbol create(String elementName, Attributes attributes)
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throws IOException {
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String src = null;
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boolean alignCenter = false;
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boolean repeat = false;
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for (int i = 0; i < attributes.getLength(); ++i) {
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String name = attributes.getLocalName(i);
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String value = attributes.getValue(i);
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if ("src".equals(name)) {
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src = value;
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} else if ("align-center".equals(name)) {
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alignCenter = Boolean.parseBoolean(value);
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} else if ("repeat".equals(name)) {
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repeat = Boolean.parseBoolean(value);
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} else {
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RenderThemeHandler.logUnknownAttribute(elementName, name, value, i);
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}
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}
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validate(elementName, src);
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return new LineSymbol(src, alignCenter, repeat);
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}
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private static void validate(String elementName, String src) {
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if (src == null) {
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throw new IllegalArgumentException("missing attribute src for element: "
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+ elementName);
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}
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}
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private final boolean mAlignCenter;
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private final Bitmap mBitmap;
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private final boolean mRepeat;
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private LineSymbol(String src, boolean alignCenter, boolean repeat)
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throws IOException {
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super();
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mBitmap = BitmapUtils.createBitmap(src);
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mAlignCenter = alignCenter;
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mRepeat = repeat;
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}
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@Override
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public void destroy() {
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mBitmap.recycle();
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}
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@Override
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public void renderWay(IRenderCallback renderCallback, Tag[] tags) {
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renderCallback.renderWaySymbol(mBitmap, mAlignCenter, mRepeat);
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}
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}
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