/* * 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); } } } }