1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* 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);
}
}
|
