source: josm/trunk/src/com/kitfox/svg/ImageSVG.java@ 5601

Last change on this file since 5601 was 4256, checked in by bastiK, 14 years ago

see #6560 - basic svg support, includes kitfox svgsalamander, r 98, patched
File size: 9.2 KB
Line 
1/*
2 * Font.java
3 *
4 *
5 * The Salamander Project - 2D and 3D graphics libraries in Java
6 * Copyright (C) 2004 Mark McKay
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
23 * projects can be found at http://www.kitfox.com
24 *
25 * Created on February 20, 2004, 10:00 PM
26 */
27
28package com.kitfox.svg;
29
30import com.kitfox.svg.app.data.Handler;
31import com.kitfox.svg.xml.*;
32
33import java.awt.*;
34import java.awt.geom.*;
35import java.awt.image.*;
36import java.net.*;
37import java.util.List;
38
39/**
40 * Implements an embedded font.
41 *
42 * SVG specification: http://www.w3.org/TR/SVG/fonts.html
43 *
44 * @author Mark McKay
45 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
46 */
47public class ImageSVG extends RenderableElement
48{
49 float x = 0f;
50 float y = 0f;
51 float width = 0f;
52 float height = 0f;
53
54// BufferedImage href = null;
55 URL imageSrc = null;
56
57 AffineTransform xform;
58 Rectangle2D bounds;
59
60 /** Creates a new instance of Font */
61 public ImageSVG()
62 {
63 }
64
65 protected void build() throws SVGException
66 {
67 super.build();
68
69 StyleAttribute sty = new StyleAttribute();
70
71 if (getPres(sty.setName("x"))) x = sty.getFloatValueWithUnits();
72
73 if (getPres(sty.setName("y"))) y = sty.getFloatValueWithUnits();
74
75 if (getPres(sty.setName("width"))) width = sty.getFloatValueWithUnits();
76
77 if (getPres(sty.setName("height"))) height = sty.getFloatValueWithUnits();
78
79 try {
80 if (getPres(sty.setName("xlink:href")))
81 {
82 URI src = sty.getURIValue(getXMLBase());
83 if ("data".equals(src.getScheme()))
84 {
85 imageSrc = new URL(null, src.toASCIIString(), new Handler());
86 }
87 else
88 {
89 try {
90 imageSrc = src.toURL();
91 }
92 catch (Exception e)
93 {
94 e.printStackTrace();
95 imageSrc = null;
96 }
97 }
98 }
99 }
100 catch (Exception e)
101 {
102 throw new SVGException(e);
103 }
104
105 diagram.getUniverse().registerImage(imageSrc);
106
107 //Set widths if not set
108 BufferedImage img = diagram.getUniverse().getImage(imageSrc);
109 if (img == null)
110 {
111 xform = new AffineTransform();
112 bounds = new Rectangle2D.Float();
113 return;
114 }
115
116 if (width == 0) width = img.getWidth();
117 if (height == 0) height = img.getHeight();
118
119 //Determine image xform
120 xform = new AffineTransform();
121// xform.setToScale(this.width / img.getWidth(), this.height / img.getHeight());
122// xform.translate(this.x, this.y);
123 xform.translate(this.x, this.y);
124 xform.scale(this.width / img.getWidth(), this.height / img.getHeight());
125
126 bounds = new Rectangle2D.Float(this.x, this.y, this.width, this.height);
127 }
128
129
130
131 public float getX() { return x; }
132 public float getY() { return y; }
133 public float getWidth() { return width; }
134 public float getHeight() { return height; }
135
136 void pick(Point2D point, boolean boundingBox, List retVec) throws SVGException
137 {
138 if (getBoundingBox().contains(point))
139 {
140 retVec.add(getPath(null));
141 }
142 }
143
144 void pick(Rectangle2D pickArea, AffineTransform ltw, boolean boundingBox, List retVec) throws SVGException
145 {
146 if (ltw.createTransformedShape(getBoundingBox()).intersects(pickArea))
147 {
148 retVec.add(getPath(null));
149 }
150 }
151
152 public void render(Graphics2D g) throws SVGException
153 {
154 StyleAttribute styleAttrib = new StyleAttribute();
155 if (getStyle(styleAttrib.setName("visibility")))
156 {
157 if (!styleAttrib.getStringValue().equals("visible")) return;
158 }
159
160 beginLayer(g);
161
162 float opacity = 1f;
163 if (getStyle(styleAttrib.setName("opacity")))
164 {
165 opacity = styleAttrib.getRatioValue();
166 }
167
168 if (opacity <= 0) return;
169
170 Composite oldComp = null;
171
172 if (opacity < 1)
173 {
174 oldComp = g.getComposite();
175 Composite comp = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity);
176 g.setComposite(comp);
177 }
178
179 BufferedImage img = diagram.getUniverse().getImage(imageSrc);
180 if (img == null) return;
181
182 AffineTransform curXform = g.getTransform();
183 g.transform(xform);
184
185 g.drawImage(img, 0, 0, null);
186
187 g.setTransform(curXform);
188 if (oldComp != null) g.setComposite(oldComp);
189
190 finishLayer(g);
191 }
192
193 public Rectangle2D getBoundingBox()
194 {
195 return boundsToParent(bounds);
196 }
197
198 /**
199 * Updates all attributes in this diagram associated with a time event.
200 * Ie, all attributes with track information.
201 * @return - true if this node has changed state as a result of the time
202 * update
203 */
204 public boolean updateTime(double curTime) throws SVGException
205 {
206// if (trackManager.getNumTracks() == 0) return false;
207 boolean changeState = super.updateTime(curTime);
208
209 //Get current values for parameters
210 StyleAttribute sty = new StyleAttribute();
211 boolean shapeChange = false;
212
213 if (getPres(sty.setName("x")))
214 {
215 float newVal = sty.getFloatValueWithUnits();
216 if (newVal != x)
217 {
218 x = newVal;
219 shapeChange = true;
220 }
221 }
222
223 if (getPres(sty.setName("y")))
224 {
225 float newVal = sty.getFloatValueWithUnits();
226 if (newVal != y)
227 {
228 y = newVal;
229 shapeChange = true;
230 }
231 }
232
233 if (getPres(sty.setName("width")))
234 {
235 float newVal = sty.getFloatValueWithUnits();
236 if (newVal != width)
237 {
238 width = newVal;
239 shapeChange = true;
240 }
241 }
242
243 if (getPres(sty.setName("height")))
244 {
245 float newVal = sty.getFloatValueWithUnits();
246 if (newVal != height)
247 {
248 height = newVal;
249 shapeChange = true;
250 }
251 }
252
253 try {
254 if (getPres(sty.setName("xlink:href")))
255 {
256 URI src = sty.getURIValue(getXMLBase());
257 URL newVal = src.toURL();
258
259 if (!newVal.equals(imageSrc))
260 {
261 imageSrc = newVal;
262 shapeChange = true;
263 }
264 }
265 }
266 catch (IllegalArgumentException ie)
267 {
268 new Exception("Image provided with illegal value for href: \"" + sty.getStringValue() + '"', ie).printStackTrace();
269 }
270 catch (Exception e)
271 {
272 e.printStackTrace();
273 }
274
275
276 if (shapeChange)
277 {
278 build();
279// diagram.getUniverse().registerImage(imageSrc);
280//
281// //Set widths if not set
282// BufferedImage img = diagram.getUniverse().getImage(imageSrc);
283// if (img == null)
284// {
285// xform = new AffineTransform();
286// bounds = new Rectangle2D.Float();
287// }
288// else
289// {
290// if (width == 0) width = img.getWidth();
291// if (height == 0) height = img.getHeight();
292//
293// //Determine image xform
294// xform = new AffineTransform();
295//// xform.setToScale(this.width / img.getWidth(), this.height / img.getHeight());
296//// xform.translate(this.x, this.y);
297// xform.translate(this.x, this.y);
298// xform.scale(this.width / img.getWidth(), this.height / img.getHeight());
299//
300// bounds = new Rectangle2D.Float(this.x, this.y, this.width, this.height);
301// }
302//
303// return true;
304 }
305
306 return changeState || shapeChange;
307 }
308}
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