source: josm/trunk/src/com/kitfox/svg/Marker.java@ 14331

Last change on this file since 14331 was 11525, checked in by Don-vip, 8 years ago

see #14319 - update to latest version of svgSalamander (2017-01-07, patched)
  • Property svn:eol-style set to native
File size: 11.2 KB
Line 
1/*
2 * SVG Salamander
3 * Copyright (c) 2004, Mark McKay
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or
7 * without modification, are permitted provided that the following
8 * conditions are met:
9 *
10 * - Redistributions of source code must retain the above
11 * copyright notice, this list of conditions and the following
12 * disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials
16 * provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29 * OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
32 * projects can be found at http://www.kitfox.com
33 */
34package com.kitfox.svg;
35
36import com.kitfox.svg.xml.StyleAttribute;
37import java.awt.Graphics2D;
38import java.awt.Rectangle;
39import java.awt.Shape;
40import java.awt.geom.AffineTransform;
41import java.awt.geom.PathIterator;
42import java.awt.geom.Rectangle2D;
43import java.util.ArrayList;
44
45/**
46 *
47 * @author kitfox
48 */
49public class Marker extends Group
50{
51 public static final String TAG_NAME = "marker";
52
53 AffineTransform viewXform;
54 AffineTransform markerXform;
55 Rectangle2D viewBox;
56 float refX;
57 float refY;
58 float markerWidth = 1;
59 float markerHeight = 1;
60 float orient = Float.NaN;
61 boolean markerUnitsStrokeWidth = true; //if set to false 'userSpaceOnUse' is assumed
62
63 @Override
64 public String getTagName()
65 {
66 return TAG_NAME;
67 }
68
69 @Override
70 protected void build() throws SVGException
71 {
72 super.build();
73
74 StyleAttribute sty = new StyleAttribute();
75
76 if (getPres(sty.setName("refX")))
77 {
78 refX = sty.getFloatValueWithUnits();
79 }
80 if (getPres(sty.setName("refY")))
81 {
82 refY = sty.getFloatValueWithUnits();
83 }
84 if (getPres(sty.setName("markerWidth")))
85 {
86 markerWidth = sty.getFloatValueWithUnits();
87 }
88 if (getPres(sty.setName("markerHeight")))
89 {
90 markerHeight = sty.getFloatValueWithUnits();
91 }
92
93 if (getPres(sty.setName("orient")))
94 {
95 if ("auto".equals(sty.getStringValue()))
96 {
97 orient = Float.NaN;
98 } else
99 {
100 orient = sty.getFloatValue();
101 }
102 }
103
104 if (getPres(sty.setName("viewBox")))
105 {
106 float[] dim = sty.getFloatList();
107 viewBox = new Rectangle2D.Float(dim[0], dim[1], dim[2], dim[3]);
108 }
109
110 if (viewBox == null)
111 {
112 viewBox = new Rectangle(0, 0, 1, 1);
113 }
114
115 if (getPres(sty.setName("markerUnits")))
116 {
117 String markerUnits = sty.getStringValue();
118 if (markerUnits != null && markerUnits.equals("userSpaceOnUse"))
119 {
120 markerUnitsStrokeWidth = false;
121 }
122 }
123
124 //Transform pattern onto unit square
125 viewXform = new AffineTransform();
126 viewXform.scale(1.0 / viewBox.getWidth(), 1.0 / viewBox.getHeight());
127 viewXform.translate(-viewBox.getX(), -viewBox.getY());
128
129 markerXform = new AffineTransform();
130 markerXform.scale(markerWidth, markerHeight);
131 markerXform.concatenate(viewXform);
132 markerXform.translate(-refX, -refY);
133 }
134
135 @Override
136 protected boolean outsideClip(Graphics2D g) throws SVGException
137 {
138 Shape clip = g.getClip();
139 Rectangle2D rect = super.getBoundingBox();
140 if (clip == null || clip.intersects(rect))
141 {
142 return false;
143 }
144
145 return true;
146
147 }
148
149 @Override
150 public void render(Graphics2D g) throws SVGException
151 {
152 AffineTransform oldXform = g.getTransform();
153 g.transform(markerXform);
154
155 super.render(g);
156
157 g.setTransform(oldXform);
158 }
159
160 public void render(Graphics2D g, MarkerPos pos, float strokeWidth) throws SVGException
161 {
162 AffineTransform cacheXform = g.getTransform();
163
164 g.translate(pos.x, pos.y);
165 if (markerUnitsStrokeWidth)
166 {
167 g.scale(strokeWidth, strokeWidth);
168 }
169
170 g.rotate(Math.atan2(pos.dy, pos.dx));
171
172 g.transform(markerXform);
173
174 super.render(g);
175
176 g.setTransform(cacheXform);
177 }
178
179 @Override
180 public Shape getShape()
181 {
182 Shape shape = super.getShape();
183 return markerXform.createTransformedShape(shape);
184 }
185
186 @Override
187 public Rectangle2D getBoundingBox() throws SVGException
188 {
189 Rectangle2D rect = super.getBoundingBox();
190 return markerXform.createTransformedShape(rect).getBounds2D();
191 }
192
193 /**
194 * Updates all attributes in this diagram associated with a time event. Ie,
195 * all attributes with track information.
196 *
197 * @return - true if this node has changed state as a result of the time
198 * update
199 */
200 @Override
201 public boolean updateTime(double curTime) throws SVGException
202 {
203 boolean changeState = super.updateTime(curTime);
204
205 build();
206
207 //Marker properties do not change
208 return changeState;
209 }
210
211 //--------------------------------
212 public static final int MARKER_START = 0;
213 public static final int MARKER_MID = 1;
214 public static final int MARKER_END = 2;
215
216 public static class MarkerPos
217 {
218
219 int type;
220 double x;
221 double y;
222 double dx;
223 double dy;
224
225 public MarkerPos(int type, double x, double y, double dx, double dy)
226 {
227 this.type = type;
228 this.x = x;
229 this.y = y;
230 this.dx = dx;
231 this.dy = dy;
232 }
233 }
234
235 public static class MarkerLayout
236 {
237
238 private ArrayList<MarkerPos> markerList = new ArrayList<MarkerPos>();
239 boolean started = false;
240
241 public void layout(Shape shape)
242 {
243 double px = 0;
244 double py = 0;
245 double[] coords = new double[6];
246 for (PathIterator it = shape.getPathIterator(null);
247 !it.isDone(); it.next())
248 {
249 switch (it.currentSegment(coords))
250 {
251 case PathIterator.SEG_MOVETO:
252 px = coords[0];
253 py = coords[1];
254 started = false;
255 break;
256 case PathIterator.SEG_CLOSE:
257 started = false;
258 break;
259 case PathIterator.SEG_LINETO:
260 {
261 double x = coords[0];
262 double y = coords[1];
263 markerIn(px, py, x - px, y - py);
264 markerOut(x, y, x - px, y - py);
265 px = x;
266 py = y;
267 break;
268 }
269 case PathIterator.SEG_QUADTO:
270 {
271 double k0x = coords[0];
272 double k0y = coords[1];
273 double x = coords[2];
274 double y = coords[3];
275
276
277 //Best in tangent
278 if (px != k0x || py != k0y)
279 {
280 markerIn(px, py, k0x - px, k0y - py);
281 } else
282 {
283 markerIn(px, py, x - px, y - py);
284 }
285
286 //Best out tangent
287 if (x != k0x || y != k0y)
288 {
289 markerOut(x, y, x - k0x, y - k0y);
290 } else
291 {
292 markerOut(x, y, x - px, y - py);
293 }
294
295 markerIn(px, py, k0x - px, k0y - py);
296 markerOut(x, y, x - k0x, y - k0y);
297 px = x;
298 py = y;
299 break;
300 }
301 case PathIterator.SEG_CUBICTO:
302 {
303 double k0x = coords[0];
304 double k0y = coords[1];
305 double k1x = coords[2];
306 double k1y = coords[3];
307 double x = coords[4];
308 double y = coords[5];
309
310 //Best in tangent
311 if (px != k0x || py != k0y)
312 {
313 markerIn(px, py, k0x - px, k0y - py);
314 } else if (px != k1x || py != k1y)
315 {
316 markerIn(px, py, k1x - px, k1y - py);
317 } else
318 {
319 markerIn(px, py, x - px, y - py);
320 }
321
322 //Best out tangent
323 if (x != k1x || y != k1y)
324 {
325 markerOut(x, y, x - k1x, y - k1y);
326 } else if (x != k0x || y != k0y)
327 {
328 markerOut(x, y, x - k0x, y - k0y);
329 } else
330 {
331 markerOut(x, y, x - px, y - py);
332 }
333 px = x;
334 py = y;
335 break;
336 }
337 }
338 }
339
340 for (int i = 1; i < markerList.size(); ++i)
341 {
342 MarkerPos prev = (MarkerPos) markerList.get(i - 1);
343 MarkerPos cur = (MarkerPos) markerList.get(i);
344
345 if (cur.type == MARKER_START)
346 {
347 prev.type = MARKER_END;
348 }
349 }
350 MarkerPos last = (MarkerPos) markerList.get(markerList.size() - 1);
351 last.type = MARKER_END;
352 }
353
354 private void markerIn(double x, double y, double dx, double dy)
355 {
356 if (started == false)
357 {
358 started = true;
359 markerList.add(new MarkerPos(MARKER_START, x, y, dx, dy));
360 }
361 }
362
363 private void markerOut(double x, double y, double dx, double dy)
364 {
365 markerList.add(new MarkerPos(MARKER_MID, x, y, dx, dy));
366 }
367
368 /**
369 * @return the markerList
370 */
371 public ArrayList<MarkerPos> getMarkerList()
372 {
373 return markerList;
374 }
375 }
376}
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