package com.mxgraph.reader;
import com.mxgraph.canvas.mxICanvas2D;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import java.util.Hashtable;
import java.util.Map;
/**
* XMLReader reader = SAXParserFactory.newInstance().newSAXParser()
* .getXMLReader();
* reader.setContentHandler(new mxSaxExportHandler(
* new mxGraphicsExportCanvas(g2)));
* reader.parse(new InputSource(new StringReader(xml)));
*/
public class mxSaxOutputHandler extends DefaultHandler {
/**
*
*/
protected mxICanvas2D canvas;
/**
*
*/
protected transient Map<String, IElementHandler> handlers = new Hashtable<String, IElementHandler>();
/**
*
*/
public mxSaxOutputHandler(mxICanvas2D canvas) {
setCanvas(canvas);
initHandlers();
}
/**
* Sets the canvas for rendering.
*/
public void setCanvas(mxICanvas2D value) {
canvas = value;
}
/**
* Returns the canvas for rendering.
*/
public mxICanvas2D getCanvas() {
return canvas;
}
/**
*
*/
public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
IElementHandler handler = handlers.get(qName.toLowerCase());
if (handler != null) {
handler.parseElement(atts);
}
}
/**
*
*/
protected void initHandlers() {
handlers.put("save", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.save();
}
});
handlers.put("restore", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.restore();
}
});
handlers.put("scale", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.scale(Double.parseDouble(atts.getValue("scale")));
}
});
handlers.put("translate", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.translate(Double.parseDouble(atts.getValue("dx")), Double.parseDouble(atts.getValue("dy")));
}
});
handlers.put("rotate", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.rotate(Double.parseDouble(atts.getValue("theta")), atts.getValue("flipH").equals("1"), atts.getValue("flipV").equals("1"),
Double.parseDouble(atts.getValue("cx")), Double.parseDouble(atts.getValue("cy")));
}
});
handlers.put("strokewidth", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setStrokeWidth(Double.parseDouble(atts.getValue("width")));
}
});
handlers.put("strokecolor", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setStrokeColor(atts.getValue("color"));
}
});
handlers.put("dashed", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setDashed(atts.getValue("dashed").equals("1"));
}
});
handlers.put("dashpattern", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setDashPattern(atts.getValue("pattern"));
}
});
handlers.put("linecap", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setLineCap(atts.getValue("cap"));
}
});
handlers.put("linejoin", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setLineJoin(atts.getValue("join"));
}
});
handlers.put("miterlimit", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setMiterLimit(Double.parseDouble(atts.getValue("limit")));
}
});
handlers.put("fontsize", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFontSize(Double.parseDouble(atts.getValue("size")));
}
});
handlers.put("fontcolor", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFontColor(atts.getValue("color"));
}
});
handlers.put("fontbackgroundcolor", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFontBackgroundColor(atts.getValue("color"));
}
});
handlers.put("fontbordercolor", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFontBorderColor(atts.getValue("color"));
}
});
handlers.put("fontfamily", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFontFamily(atts.getValue("family"));
}
});
handlers.put("fontstyle", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFontStyle(Integer.parseInt(atts.getValue("style")));
}
});
handlers.put("alpha", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setAlpha(Double.parseDouble(atts.getValue("alpha")));
}
});
handlers.put("fillcolor", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setFillColor(atts.getValue("color"));
}
});
handlers.put("shadowcolor", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setShadowColor(atts.getValue("color"));
}
});
handlers.put("shadowalpha", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setShadowAlpha(Double.parseDouble(atts.getValue("alpha")));
}
});
handlers.put("shadowoffset", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setShadowOffset(Double.parseDouble(atts.getValue("dx")), Double.parseDouble(atts.getValue("dy")));
}
});
handlers.put("shadow", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setShadow(getValue(atts, "enabled", "1").equals("1"));
}
});
handlers.put("gradient", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.setGradient(atts.getValue("c1"), atts.getValue("c2"), Double.parseDouble(atts.getValue("x")),
Double.parseDouble(atts.getValue("y")), Double.parseDouble(atts.getValue("w")),
Double.parseDouble(atts.getValue("h")), atts.getValue("direction"),
Double.parseDouble(getValue(atts, "alpha1", "1")), Double.parseDouble(getValue(atts, "alpha2", "1")));
}
});
handlers.put("rect", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.rect(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")), Double.parseDouble(atts.getValue("w")),
Double.parseDouble(atts.getValue("h")));
}
});
handlers.put("roundrect", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas
.roundrect(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")), Double.parseDouble(atts.getValue("w")),
Double.parseDouble(atts.getValue("h")), Double.parseDouble(atts.getValue("dx")),
Double.parseDouble(atts.getValue("dy")));
}
});
handlers.put("ellipse", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas
.ellipse(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")), Double.parseDouble(atts.getValue("w")),
Double.parseDouble(atts.getValue("h")));
}
});
handlers.put("image", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.image(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")), Double.parseDouble(atts.getValue("w")),
Double.parseDouble(atts.getValue("h")), atts.getValue("src"), atts.getValue("aspect").equals("1"),
atts.getValue("flipH").equals("1"), atts.getValue("flipV").equals("1"));
}
});
handlers.put("text", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.text(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")), Double.parseDouble(atts.getValue("w")),
Double.parseDouble(atts.getValue("h")), atts.getValue("str"), atts.getValue("align"), atts.getValue("valign"),
getValue(atts, "wrap", "").equals("1"), atts.getValue("format"), atts.getValue("overflow"),
getValue(atts, "clip", "").equals("1"), Double.parseDouble(getValue(atts, "rotation", "0")));
}
});
handlers.put("begin", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.begin();
}
});
handlers.put("move", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.moveTo(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")));
}
});
handlers.put("line", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.lineTo(Double.parseDouble(atts.getValue("x")), Double.parseDouble(atts.getValue("y")));
}
});
handlers.put("quad", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas
.quadTo(Double.parseDouble(atts.getValue("x1")), Double.parseDouble(atts.getValue("y1")), Double.parseDouble(atts.getValue("x2")),
Double.parseDouble(atts.getValue("y2")));
}
});
handlers.put("curve", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.curveTo(Double.parseDouble(atts.getValue("x1")), Double.parseDouble(atts.getValue("y1")),
Double.parseDouble(atts.getValue("x2")), Double.parseDouble(atts.getValue("y2")),
Double.parseDouble(atts.getValue("x3")), Double.parseDouble(atts.getValue("y3")));
}
});
handlers.put("close", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.close();
}
});
handlers.put("stroke", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.stroke();
}
});
handlers.put("fill", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.fill();
}
});
handlers.put("fillstroke", new IElementHandler() {
public void parseElement(Attributes atts) {
canvas.fillAndStroke();
}
});
}
/**
* Returns the given attribute value or an empty string.
*/
protected String getValue(Attributes atts, String name, String defaultValue) {
String value = atts.getValue(name);
if (value == null) {
value = defaultValue;
}
return value;
}
;
/**
*
*/
protected interface IElementHandler {
void parseElement(Attributes atts);
}
}