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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.gradient.Function;
- import org.apache.fop.render.gradient.GradientMaker;
- 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);
-
- /**
- * 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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