/*
* Copyright 2010, 2011, 2012 mapsforge.org
*
* This program is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mapsforge.map.rendertheme.renderinstruction;
import java.io.IOException;
import java.util.Locale;
import java.util.regex.Pattern;
import org.mapsforge.map.graphics.Cap;
import org.mapsforge.map.graphics.Paint;
import org.mapsforge.map.graphics.Style;
import org.mapsforge.map.rendertheme.GraphicAdapter;
import org.mapsforge.map.rendertheme.GraphicAdapter.Color;
import org.mapsforge.map.rendertheme.XmlUtils;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* A builder for {@link Line} instances.
*/
public class LineBuilder {
private static final Pattern SPLIT_PATTERN = Pattern.compile(",");
static final String SRC = "src";
static final String STROKE = "stroke";
static final String STROKE_DASHARRAY = "stroke-dasharray";
static final String STROKE_LINECAP = "stroke-linecap";
static final String STROKE_WIDTH = "stroke-width";
private static float[] parseFloatArray(String name, String dashString) throws SAXException {
String[] dashEntries = SPLIT_PATTERN.split(dashString);
float[] dashIntervals = new float[dashEntries.length];
for (int i = 0; i < dashEntries.length; ++i) {
dashIntervals[i] = XmlUtils.parseNonNegativeFloat(name, dashEntries[i]);
}
return dashIntervals;
}
final int level;
final Paint stroke;
float strokeWidth;
public LineBuilder(GraphicAdapter graphicAdapter, String elementName, Attributes attributes, int level,
String relativePathPrefix) throws IOException, SAXException {
this.level = level;
this.stroke = graphicAdapter.getPaint();
this.stroke.setColor(graphicAdapter.getColor(Color.BLACK));
this.stroke.setStyle(Style.STROKE);
this.stroke.setStrokeCap(Cap.ROUND);
extractValues(graphicAdapter, elementName, attributes, relativePathPrefix);
}
/**
* @return a new {@code Line} instance.
*/
public Line build() {
return new Line(this);
}
private void extractValues(GraphicAdapter graphicAdapter, String elementName, Attributes attributes,
String relativePathPrefix) throws IOException, SAXException {
for (int i = 0; i < attributes.getLength(); ++i) {
String name = attributes.getQName(i);
String value = attributes.getValue(i);
if (SRC.equals(name)) {
this.stroke.setBitmapShader(XmlUtils.createBitmap(graphicAdapter, relativePathPrefix, value));
} else if (STROKE.equals(name)) {
this.stroke.setColor(graphicAdapter.parseColor(value));
} else if (STROKE_WIDTH.equals(name)) {
this.strokeWidth = XmlUtils.parseNonNegativeFloat(name, value);
} else if (STROKE_DASHARRAY.equals(name)) {
this.stroke.setDashPathEffect(parseFloatArray(name, value));
} else if (STROKE_LINECAP.equals(name)) {
this.stroke.setStrokeCap(Cap.valueOf(value.toUpperCase(Locale.ENGLISH)));
} else {
throw XmlUtils.createSAXException(elementName, name, value, i);
}
}
}
}