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</*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
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 java.util.ArrayList;
import java.util.List;
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.shading.Function;
import org.apache.fop.render.shading.GradientMaker;
import org.apache.fop.render.shading.Pattern;
import org.apache.fop.render.shading.Shading;
public class PSSVGGraphics2D extends PSGraphics2D {
private static final Log LOG = LogFactory.getLog(PSSVGGraphics2D.class);
/**
* Create a new Graphics2D that generates PostScript code.
* @param textAsShapes True if text should be rendered as graphics
* @see org.apache.xmlgraphics.java2d.AbstractGraphics2D#AbstractGraphics2D(boolean)
*/
public PSSVGGraphics2D(boolean textAsShapes) {
super(textAsShapes);
}
/**
* Create a new Graphics2D that generates PostScript code.
* @param textAsShapes True if text should be rendered as graphics
* @param gen PostScript generator to use for output
* @see org.apache.xmlgraphics.java2d.AbstractGraphics2D#AbstractGraphics2D(boolean)
*/
public PSSVGGraphics2D(boolean textAsShapes, PSGenerator gen) {
super(textAsShapes, gen);
}
/**
* Constructor for creating copies
* @param g parent PostScript Graphics2D
*/
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,
getBaseTransform(), getTransform());
try {
gen.write(toString(pattern));
} catch (IOException ioe) {
handleIOException(ioe);
}
} else if (paint instanceof RadialGradientPaint) {
Pattern pattern = GradientMaker.makeRadialGradient((RadialGradientPaint) paint,
getBaseTransform(), getTransform());
try {
gen.write(toString(pattern));
} catch (IOException ioe) {
handleIOException(ioe);
}
}
}
/**
* Outputs the radial or axial pattern as a string dictionary to insert
* into a postscript document.
* @param pattern
*/
private String toString(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(Double.toString(m)); // TODO refactor so that PSGenerator.formatDouble can be used
p.append(" ");
}
p.append("] ");
p.append("makepattern setcolor\n");
return p.toString();
}
private void outputShading(StringBuilder p, Shading shading) {
final Function function = shading.getFunction();
Shading.FunctionRenderer functionRenderer = new Shading.FunctionRenderer() {
public void outputFunction(StringBuilder out) {
List<String> functionsStrings = new ArrayList<String>(function.getFunctions().size());
for (Function f : function.getFunctions()) {
functionsStrings.add(functionToString(f));
}
out.append(function.toWriteableString(functionsStrings));
}
};
shading.output(p, functionRenderer);
}
private String functionToString(Function function) {
List<String> functionsStrings = new ArrayList<String>(function.getFunctions().size());
for (Function f : function.getFunctions()) {
functionsStrings.add(functionToString(f));
}
return function.toWriteableString(functionsStrings);
}
protected AffineTransform getBaseTransform() {
AffineTransform at = new AffineTransform(this.getTransform());
return at;
}
/**
* Creates a new <code>Graphics</code> object that is
* a copy of this <code>Graphics</code> object.
* @return a new graphics context that is a copy of
* this graphics context.
*/
@Override
public Graphics create() {
preparePainting();
return new PSSVGGraphics2D(this);
}
}
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