/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.internal.rendering.writer.vml;
import org.geomajas.configuration.FeatureStyleInfo;
import org.geomajas.configuration.ImageInfo;
import org.geomajas.configuration.RectInfo;
import org.geomajas.configuration.SymbolInfo;
import org.geomajas.internal.rendering.writer.GraphicsWriter;
import org.geomajas.layer.LayerType;
import org.geomajas.layer.feature.InternalFeature;
import org.geomajas.rendering.GraphicsDocument;
import org.geomajas.rendering.RenderException;
import org.geotools.geometry.jts.GeometryCoordinateSequenceTransformer;
import org.opengis.referencing.operation.TransformException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
/**
* Vml writer for features.
*
* @author Pieter De Graef
* @author Jan De Moerloose
*/
public class VmlFeatureWriter implements GraphicsWriter {
private final Logger log = LoggerFactory.getLogger(VmlFeatureWriter.class);
private GeometryCoordinateSequenceTransformer transformer;
private int coordWidth;
private int coordHeight;
public VmlFeatureWriter(GeometryCoordinateSequenceTransformer transformer, int coordWidth, int coordHeight) {
this.transformer = transformer;
this.coordWidth = coordWidth;
this.coordHeight = coordHeight;
}
public void writeObject(Object object, GraphicsDocument document, boolean asChild) throws RenderException {
try {
InternalFeature feature = (InternalFeature) object;
Geometry geom = feature.getGeometry();
if (feature.isClipped()) {
geom = feature.getClippedGeometry();
}
geom = transformer.transform(geom);
if (isPointLike(feature)) {
if (feature.getStyleInfo().getSymbol() != null) {
SymbolInfo info = feature.getStyleInfo().getSymbol();
for (Coordinate coordinate : geom.getCoordinates()) {
if (info.getRect() != null) {
writeRectangle(document, coordinate, feature, info.getRect());
} else if (info.getCircle() != null) {
RectInfo rectInfo = new RectInfo();
rectInfo.setW(info.getCircle().getR() * 2);
rectInfo.setH(info.getCircle().getR() * 2);
writeRectangle(document, coordinate, feature, rectInfo);
} else if (info.getImage() != null) {
writeImage(document, coordinate, feature, info.getImage());
}
}
}
} else {
document.writeObject(geom, asChild);
document.writeAttribute("style", "WIDTH: 100%; HEIGHT: 100%");
document.writeAttribute("coordsize", coordWidth + "," + coordHeight);
document.writeAttribute("type", "#" + feature.getStyleInfo().getStyleId());
document.writeAttribute("id", feature.getId());
}
} catch (TransformException e) {
log.warn("could not render feature");
}
}
private void writeImage(GraphicsDocument document, Coordinate coordinate, InternalFeature feature,
ImageInfo imageInfo) throws RenderException {
document.writeElement("vml:image", true);
document.writeAttribute("id", feature.getId());
int width = imageInfo.getWidth();
int height = imageInfo.getHeight();
int left = (int) coordinate.x - width / 2;
int top = (int) coordinate.y - height / 2;
document.writeAttribute("style", "WIDTH: " + width + "px; HEIGHT: " + height + "px;TOP: " + top + "px; LEFT: "
+ left + "px;");
document.writeAttribute("src", imageInfo.getHref());
document.closeElement();
}
private void writeRectangle(GraphicsDocument document, Coordinate coordinate, InternalFeature feature,
RectInfo rectInfo) throws RenderException {
document.writeElement("vml:rect", true);
document.writeAttribute("id", feature.getId());
int width = (int) rectInfo.getW();
int height = (int) rectInfo.getH();
int left = (int) coordinate.x - width / 2;
int top = (int) coordinate.y - height / 2;
document.writeAttribute("style", "WIDTH: " + width + "px; HEIGHT: " + height + "px;TOP: " + top + "px; LEFT: "
+ left + "px;");
FeatureStyleInfo style = feature.getStyleInfo();
document.writeAttribute("fillcolor", style.getFillColor());
document.writeAttribute("strokecolor", style.getStrokeColor());
document.writeAttribute("strokeweight", style.getStrokeWidth());
// Rect-fill element:
document.writeElement("vml:fill", true);
document.writeAttribute("opacity", Float.toString(style.getFillOpacity()));
document.closeElement();
// Rect-stroke element:
document.writeElement("vml:stroke", true);
document.writeAttribute("opacity", Float.toString(style.getStrokeOpacity()));
document.closeElement();
// Rect element
document.closeElement();
}
private boolean isPointLike(InternalFeature feature) {
return feature.getLayer().getLayerInfo().getLayerType() == LayerType.POINT
|| feature.getLayer().getLayerInfo().getLayerType() == LayerType.MULTIPOINT;
}
}