package org.apache.fop.render.ps.svg;
import java.awt.Graphics;
import java.awt.Paint;
import java.awt.geom.AffineTransform;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.batik.ext.awt.LinearGradientPaint;
import org.apache.batik.ext.awt.RadialGradientPaint;
import org.apache.xmlgraphics.java2d.ps.PSGraphics2D;
import org.apache.xmlgraphics.ps.PSGenerator;
import org.apache.fop.render.gradient.Function;
import org.apache.fop.render.gradient.Function.SubFunctionRenderer;
import org.apache.fop.render.gradient.GradientMaker;
import org.apache.fop.render.gradient.GradientMaker.DoubleFormatter;
import org.apache.fop.render.gradient.Pattern;
import org.apache.fop.render.gradient.Shading;
public class PSSVGGraphics2D extends PSGraphics2D {
private static final Log LOG = LogFactory.getLog(PSSVGGraphics2D.class);
public PSSVGGraphics2D(boolean textAsShapes) {
super(textAsShapes);
}
public PSSVGGraphics2D(boolean textAsShapes, PSGenerator gen) {
super(textAsShapes, gen);
}
public PSSVGGraphics2D(PSGraphics2D g) {
super(g);
}
protected void applyPaint(Paint paint, boolean fill) {
super.applyPaint(paint, fill);
if (paint instanceof LinearGradientPaint) {
Pattern pattern = GradientMaker.makeLinearGradient((LinearGradientPaint) paint,
new AffineTransform(), new AffineTransform());
try {
gen.write(outputPattern(pattern));
} catch (IOException ioe) {
handleIOException(ioe);
}
} else if (paint instanceof RadialGradientPaint) {
Pattern pattern = GradientMaker.makeRadialGradient((RadialGradientPaint) paint,
new AffineTransform(), new AffineTransform());
try {
gen.write(outputPattern(pattern));
} catch (IOException ioe) {
handleIOException(ioe);
}
}
}
private String outputPattern(Pattern pattern) {
StringBuilder p = new StringBuilder(64);
p.append("/Pattern setcolorspace\n");
p.append("<< \n/Type /Pattern \n");
p.append("/PatternType " + pattern.getPatternType() + " \n");
if (pattern.getShading() != null) {
p.append("/Shading ");
outputShading(p, pattern.getShading());
p.append(" \n");
}
p.append(">> \n");
p.append("[ ");
for (double m : pattern.getMatrix()) {
p.append(getPSGenerator().formatDouble(m));
p.append(" ");
}
p.append("] ");
p.append("makepattern setcolor\n");
return p.toString();
}
private void outputShading(StringBuilder out, Shading shading) {
final GradientMaker.DoubleFormatter doubleFormatter = new DoubleFormatter() {
public String formatDouble(double d) {
return getPSGenerator().formatDouble(d);
}
};
final Function function = shading.getFunction();
Shading.FunctionRenderer functionRenderer = new Shading.FunctionRenderer() {
public void outputFunction(StringBuilder out) {
SubFunctionRenderer subFunctionRenderer = new Function.SubFunctionRenderer() {
public void outputFunction(StringBuilder out, int functionIndex) {
Function subFunction = function.getFunctions().get(functionIndex);
assert subFunction.getFunctions().isEmpty();
subFunction.output(out, doubleFormatter, null);
}
};
function.output(out, doubleFormatter, subFunctionRenderer);
}
};
shading.output(out, doubleFormatter, functionRenderer);
}
@Override
public Graphics create() {
preparePainting();
return new PSSVGGraphics2D(this);
}
}