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
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* 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.java2d;
import java.awt.geom.AffineTransform;
import org.w3c.dom.Document;
import org.apache.fop.render.Renderer;
import org.apache.fop.render.XMLHandler;
import org.apache.fop.render.RendererContext;
import org.apache.fop.svg.SVGUserAgent;
// Commons-Logging
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.batik.bridge.GVTBuilder;
import org.apache.batik.bridge.BridgeContext;
import org.apache.batik.dom.svg.SVGDOMImplementation;
import org.apache.batik.gvt.GraphicsNode;
/**
* Java2D XML handler for SVG (uses Apache Batik).
* This handler handles XML for foreign objects when rendering to Java2D.
* The properties from the Java2D renderer are subject to change.
*/
public class Java2DSVGHandler implements XMLHandler, Java2DRendererContextConstants {
/** logging instance */
private static Log log = LogFactory.getLog(Java2DSVGHandler.class);
/**
* Create a new Java2D XML handler for use by the Java2D renderer and its subclasses.
*/
public Java2DSVGHandler() {
//nop
}
/** {@inheritDoc} */
public void handleXML(RendererContext context,
Document doc, String ns) throws Exception {
Java2DInfo pdfi = getJava2DInfo(context);
if (SVGDOMImplementation.SVG_NAMESPACE_URI.equals(ns)) {
renderSVGDocument(context, doc, pdfi);
}
}
/**
* Get the pdf information from the render context.
*
* @param context the renderer context
* @return the pdf information retrieved from the context
*/
public static Java2DInfo getJava2DInfo(RendererContext context) {
Java2DInfo pdfi = new Java2DInfo();
pdfi.state = (Java2DGraphicsState)context.getProperty(JAVA2D_STATE);
pdfi.width = ((Integer)context.getProperty(WIDTH)).intValue();
pdfi.height = ((Integer)context.getProperty(HEIGHT)).intValue();
pdfi.currentXPosition = ((Integer)context.getProperty(XPOS)).intValue();
pdfi.currentYPosition = ((Integer)context.getProperty(YPOS)).intValue();
return pdfi;
}
/**
* Java2D information structure for drawing the XML document.
*/
public static class Java2DInfo {
/** see Java2D_STATE */
public Java2DGraphicsState state;
/** see Java2D_WIDTH */
public int width;
/** see Java2D_HEIGHT */
public int height;
/** see Java2D_XPOS */
public int currentXPosition;
/** see Java2D_YPOS */
public int currentYPosition;
/** {@inheritDoc} */
public String toString() {
return "Java2DInfo {"
+ "state = " + state + ", "
+ "width = " + width + ", "
+ "height = " + height + ", "
+ "currentXPosition = " + currentXPosition + ", "
+ "currentYPosition = " + currentYPosition + "}";
}
}
/**
* Render the svg document.
* @param context the renderer context
* @param doc the svg document
* @param info the pdf information of the current context
*/
protected void renderSVGDocument(RendererContext context,
Document doc,
Java2DInfo info) {
log.debug("renderSVGDocument(" + context + ", " + doc + ", " + info + ")");
int x = info.currentXPosition;
int y = info.currentYPosition;
float ptom = context.getUserAgent().getSourcePixelUnitToMillimeter();
SVGUserAgent ua = new SVGUserAgent(ptom, new AffineTransform());
GVTBuilder builder = new GVTBuilder();
BridgeContext ctx = new BridgeContext(ua);
GraphicsNode root;
try {
root = builder.build(ctx, doc);
} catch (Exception e) {
log.error("SVG graphic could not be built: " + e.getMessage(), e);
return;
}
// If no viewbox is defined in the svg file, a viewbox of 100x100 is
// assumed, as defined in SVGUserAgent.getViewportSize()
float iw = (float) ctx.getDocumentSize().getWidth() * 1000f;
float ih = (float) ctx.getDocumentSize().getHeight() * 1000f;
float w = (float) info.width;
float h = (float) info.height;
AffineTransform origTransform = info.state.getGraph().getTransform();
// correct integer roundoff
info.state.getGraph().translate(x / 1000f, y / 1000f);
//SVGSVGElement svg = ((SVGDocument) doc).getRootElement();
// Aspect ratio preserved by layout engine, not here
AffineTransform at = AffineTransform.getScaleInstance(w / iw, h / ih);
if (!at.isIdentity()) {
info.state.getGraph().transform(at);
}
try {
root.paint(info.state.getGraph());
} catch (Exception e) {
log.error("Error while painting SVG", e);
}
info.state.getGraph().setTransform(origTransform);
}
/** {@inheritDoc} */
public boolean supportsRenderer(Renderer renderer) {
return (renderer instanceof Java2DRenderer);
}
/** {@inheritDoc} */
public String getNamespace() {
return SVGDOMImplementation.SVG_NAMESPACE_URI;
}
}
|
