root / trunk / extensions / extSymbology / src / org / gvsig / symbology / fmap / labeling / GeneralLabelingStrategy.java @ 24226
History | View | Annotate | Download (23.9 KB)
1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* as published by the Free Software Foundation; either version 2
|
8 |
* of the License, or (at your option) any later version.
|
9 |
*
|
10 |
* This program is distributed in the hope that it will be useful,
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
* GNU General Public License for more details.
|
14 |
*
|
15 |
* You should have received a copy of the GNU General Public License
|
16 |
* along with this program; if not, write to the Free Software
|
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
18 |
*
|
19 |
* For more information, contact:
|
20 |
*
|
21 |
* Generalitat Valenciana
|
22 |
* Conselleria d'Infraestructures i Transport
|
23 |
* Av. Blasco Ib??ez, 50
|
24 |
* 46010 VALENCIA
|
25 |
* SPAIN
|
26 |
*
|
27 |
* +34 963862235
|
28 |
* gvsig@gva.es
|
29 |
* www.gvsig.gva.es
|
30 |
*
|
31 |
* or
|
32 |
*
|
33 |
* IVER T.I. S.A
|
34 |
* Salamanca 50
|
35 |
* 46005 Valencia
|
36 |
* Spain
|
37 |
*
|
38 |
* +34 963163400
|
39 |
* dac@iver.es
|
40 |
*/
|
41 |
|
42 |
/* CVS MESSAGES:
|
43 |
*
|
44 |
* $Id: GeneralLabelingStrategy.java 13749 2007-09-17 14:16:11Z jaume $
|
45 |
* $Log$
|
46 |
* Revision 1.2 2007-09-17 14:16:11 jaume
|
47 |
* multilayer symbols sizing bug fixed
|
48 |
*
|
49 |
* Revision 1.1 2007/05/22 12:17:41 jaume
|
50 |
* *** empty log message ***
|
51 |
*
|
52 |
* Revision 1.1 2007/05/22 10:05:31 jaume
|
53 |
* *** empty log message ***
|
54 |
*
|
55 |
* Revision 1.10 2007/05/17 09:32:06 jaume
|
56 |
* *** empty log message ***
|
57 |
*
|
58 |
* Revision 1.9 2007/05/09 11:04:58 jaume
|
59 |
* refactored legend hierarchy
|
60 |
*
|
61 |
* Revision 1.8 2007/04/13 11:59:30 jaume
|
62 |
* *** empty log message ***
|
63 |
*
|
64 |
* Revision 1.7 2007/04/12 14:28:43 jaume
|
65 |
* basic labeling support for lines
|
66 |
*
|
67 |
* Revision 1.6 2007/04/11 16:01:08 jaume
|
68 |
* maybe a label placer refactor
|
69 |
*
|
70 |
* Revision 1.5 2007/04/10 16:34:01 jaume
|
71 |
* towards a styled labeling
|
72 |
*
|
73 |
* Revision 1.4 2007/04/02 16:34:56 jaume
|
74 |
* Styled labeling (start commiting)
|
75 |
*
|
76 |
* Revision 1.3 2007/03/28 16:48:01 jaume
|
77 |
* *** empty log message ***
|
78 |
*
|
79 |
* Revision 1.2 2007/03/26 14:40:38 jaume
|
80 |
* added print method (BUT UNIMPLEMENTED)
|
81 |
*
|
82 |
* Revision 1.1 2007/03/20 16:16:20 jaume
|
83 |
* refactored to use ISymbol instead of FSymbol
|
84 |
*
|
85 |
* Revision 1.2 2007/03/09 11:20:57 jaume
|
86 |
* Advanced symbology (start committing)
|
87 |
*
|
88 |
* Revision 1.1 2007/03/09 08:33:43 jaume
|
89 |
* *** empty log message ***
|
90 |
*
|
91 |
* Revision 1.1.2.5 2007/02/21 07:34:08 jaume
|
92 |
* labeling starts working
|
93 |
*
|
94 |
* Revision 1.1.2.4 2007/02/15 16:23:44 jaume
|
95 |
* *** empty log message ***
|
96 |
*
|
97 |
* Revision 1.1.2.3 2007/02/09 07:47:05 jaume
|
98 |
* Isymbol moved
|
99 |
*
|
100 |
* Revision 1.1.2.2 2007/02/02 16:21:24 jaume
|
101 |
* start commiting labeling stuff
|
102 |
*
|
103 |
* Revision 1.1.2.1 2007/02/01 17:46:49 jaume
|
104 |
* *** empty log message ***
|
105 |
*
|
106 |
*
|
107 |
*/
|
108 |
package org.gvsig.symbology.fmap.labeling; |
109 |
|
110 |
import java.awt.Graphics2D; |
111 |
import java.awt.geom.NoninvertibleTransformException; |
112 |
import java.awt.geom.PathIterator; |
113 |
import java.awt.geom.Point2D; |
114 |
import java.awt.geom.Rectangle2D; |
115 |
import java.awt.image.BufferedImage; |
116 |
import java.io.CharArrayReader; |
117 |
import java.io.StringReader; |
118 |
import java.text.NumberFormat; |
119 |
import java.util.ArrayList; |
120 |
import java.util.Hashtable; |
121 |
import java.util.TreeSet; |
122 |
|
123 |
import javax.print.attribute.PrintRequestAttributeSet; |
124 |
|
125 |
import org.apache.log4j.Logger; |
126 |
import org.cresques.cts.ICoordTrans; |
127 |
import org.gvsig.symbology.fmap.labeling.parse.LabelExpressionParser; |
128 |
import org.gvsig.symbology.fmap.labeling.parse.ParseException; |
129 |
import org.gvsig.symbology.fmap.labeling.placements.AbstractPlacementConstraints; |
130 |
import org.gvsig.symbology.fmap.labeling.placements.ILabelPlacement; |
131 |
import org.gvsig.symbology.fmap.labeling.placements.LinePlacementConstraints; |
132 |
import org.gvsig.symbology.fmap.labeling.placements.MultiShapePlacementConstraints; |
133 |
import org.gvsig.symbology.fmap.labeling.placements.PointPlacementConstraints; |
134 |
import org.gvsig.symbology.fmap.labeling.placements.PolygonPlacementConstraints; |
135 |
import org.gvsig.symbology.fmap.labeling.placements.PolygonPlacementOnCentroid; |
136 |
import org.gvsig.symbology.fmap.labeling.placements.PolygonPlacementParallel; |
137 |
import org.gvsig.symbology.fmap.labeling.placements.RemoveDuplicatesComparator; |
138 |
import org.gvsig.symbology.fmap.rendering.filter.operations.Expression; |
139 |
import org.gvsig.symbology.fmap.rendering.filter.operations.ExpressionException; |
140 |
import org.gvsig.symbology.fmap.symbols.SmartTextSymbol; |
141 |
|
142 |
import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
143 |
import com.hardcode.gdbms.engine.values.Value; |
144 |
import com.iver.andami.PluginServices; |
145 |
import com.iver.cit.gvsig.fmap.MapContext; |
146 |
import com.iver.cit.gvsig.fmap.ViewPort; |
147 |
import com.iver.cit.gvsig.fmap.core.CartographicSupport; |
148 |
import com.iver.cit.gvsig.fmap.core.CartographicSupportToolkit; |
149 |
import com.iver.cit.gvsig.fmap.core.FShape; |
150 |
import com.iver.cit.gvsig.fmap.core.GeneralPathX; |
151 |
import com.iver.cit.gvsig.fmap.core.IFeature; |
152 |
import com.iver.cit.gvsig.fmap.core.IGeometry; |
153 |
import com.iver.cit.gvsig.fmap.core.SymbologyFactory; |
154 |
import com.iver.cit.gvsig.fmap.core.symbols.ITextSymbol; |
155 |
import com.iver.cit.gvsig.fmap.core.v02.FConstant; |
156 |
import com.iver.cit.gvsig.fmap.core.v02.FConverter; |
157 |
import com.iver.cit.gvsig.fmap.drivers.IFeatureIterator; |
158 |
import com.iver.cit.gvsig.fmap.layers.FLayer; |
159 |
import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
160 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.ILabelingMethod; |
161 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.ILabelingStrategy; |
162 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.IPlacementConstraints; |
163 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.IZoomConstraints; |
164 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.LabelClass; |
165 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.LabelLocationMetrics; |
166 |
import com.iver.cit.gvsig.fmap.rendering.styling.labeling.LabelingFactory; |
167 |
import com.iver.utiles.XMLEntity; |
168 |
import com.iver.utiles.swing.threads.Cancellable; |
169 |
|
170 |
/**
|
171 |
*
|
172 |
* GeneralLabelingStrategy.java
|
173 |
*
|
174 |
*
|
175 |
* @author jaume dominguez faus - jaume.dominguez@iver.es Jan 4, 2008
|
176 |
*
|
177 |
*/
|
178 |
public class GeneralLabelingStrategy implements ILabelingStrategy, Cloneable,CartographicSupport { |
179 |
public static IPlacementConstraints DefaultPointPlacementConstraints = new PointPlacementConstraints(); |
180 |
public static IPlacementConstraints DefaultLinePlacementConstraints = new LinePlacementConstraints(); |
181 |
public static IPlacementConstraints DefaultPolygonPlacementConstraints = new PolygonPlacementConstraints(); |
182 |
private static String[] NO_TEXT = {PluginServices.getText(null, "text_field")}; |
183 |
private static MultiShapePlacementConstraints DefaultMultiShapePlacementConstratints = new MultiShapePlacementConstraints(); |
184 |
private ILabelingMethod method;
|
185 |
private IPlacementConstraints placementConstraints;
|
186 |
protected FLyrVect layer;
|
187 |
private IZoomConstraints zoomConstraints;
|
188 |
private boolean allowOverlapping; |
189 |
private long parseTime; |
190 |
private int unit; |
191 |
private int referenceSystem; |
192 |
|
193 |
public void setLayer(FLayer layer) throws ReadDriverException { |
194 |
FLyrVect l = (FLyrVect) layer; |
195 |
this.layer = l;
|
196 |
} |
197 |
|
198 |
public ILabelingMethod getLabelingMethod() {
|
199 |
return method;
|
200 |
} |
201 |
|
202 |
public void setLabelingMethod(ILabelingMethod method) { |
203 |
this.method = method;
|
204 |
} |
205 |
|
206 |
public void draw(BufferedImage mapImage, Graphics2D mapGraphics, |
207 |
ViewPort viewPort, Cancellable cancel, double dpi) throws ReadDriverException { |
208 |
|
209 |
// boolean bVisualFXEnabled = false; // if true, the user can see how the labeling is drawing up
|
210 |
TreeSet<?> placedLabels = null; |
211 |
parseTime =0;
|
212 |
long t1 = System.currentTimeMillis(); |
213 |
String[] usedFields = getUsedFields(); |
214 |
|
215 |
int notPlacedCount = 0; |
216 |
int placedCount = 0; |
217 |
|
218 |
/*
|
219 |
* Get the label placement solvers according the user's settings
|
220 |
*/
|
221 |
ILabelPlacement placement = PlacementManager.getPlacement(getPlacementConstraints(), layer.getShapeType()); |
222 |
|
223 |
/*
|
224 |
* get an ordered set of the LabelClasses up on the
|
225 |
* label priority
|
226 |
*/
|
227 |
LabelClass[] lcs = method.getLabelClasses();
|
228 |
TreeSet<LabelClass> ts = new TreeSet<LabelClass>(new LabelClassComparatorByPriority()); |
229 |
|
230 |
for (int i = 0; i < lcs.length; i++) ts.add(lcs[i]); |
231 |
|
232 |
if (ts.size()==0) return; |
233 |
|
234 |
// // -- visual FX stuff
|
235 |
// BufferedImage visualFXim = null;
|
236 |
// Graphics2D visualFXgr = null;
|
237 |
// if (bVisualFXEnabled) {
|
238 |
// visualFXim = new BufferedImage(mapImage.getWidth(),
|
239 |
// mapImage.getHeight(),
|
240 |
// BufferedImage.TYPE_INT_ARGB);
|
241 |
// visualFXgr = visualFXim.createGraphics();
|
242 |
// visualFXgr.drawImage(mapImage, null, null);
|
243 |
// }
|
244 |
// int drawEach = 300; // (milliseconds)
|
245 |
// long lastTime = System.currentTimeMillis();
|
246 |
// // -- end visual FX stuff
|
247 |
|
248 |
/*
|
249 |
* now we have an ordered set, it is only need to give a pass
|
250 |
* for each label class to render by priorities.
|
251 |
*
|
252 |
* If no priorities were defined, the following loop only executes
|
253 |
* once
|
254 |
*/
|
255 |
for (LabelClass lc : ts) {
|
256 |
IFeatureIterator it = method.getFeatureIteratorByLabelClass(layer, lc, viewPort, usedFields); |
257 |
|
258 |
// duplicates treatment stuff
|
259 |
/* handle the duplicates mode */
|
260 |
int duplicateMode = getDuplicateLabelsMode();
|
261 |
if (duplicateMode == IPlacementConstraints.REMOVE_DUPLICATE_LABELS) {
|
262 |
// we need to register the labels already placed
|
263 |
if (placedLabels == null) |
264 |
placedLabels = new TreeSet<String[]>( |
265 |
new RemoveDuplicatesComparator());
|
266 |
else placedLabels.clear();
|
267 |
} |
268 |
|
269 |
|
270 |
boolean bLabelsReallocatable = !isAllowingOverlap();
|
271 |
|
272 |
BufferedImage overlapDetectImage = null; |
273 |
Graphics2D overlapDetectGraphics = null; |
274 |
if (bLabelsReallocatable) {
|
275 |
overlapDetectImage = new BufferedImage( |
276 |
mapImage.getWidth()+(int)viewPort.getOffset().getX(),
|
277 |
mapImage.getHeight()+(int)viewPort.getOffset().getY(),
|
278 |
BufferedImage.TYPE_INT_ARGB
|
279 |
); |
280 |
overlapDetectGraphics = overlapDetectImage.createGraphics(); |
281 |
overlapDetectGraphics.setRenderingHints(mapGraphics.getRenderingHints()); |
282 |
} |
283 |
|
284 |
while ( !cancel.isCanceled() && it.hasNext()) {
|
285 |
IFeature feat = it.next(); |
286 |
IGeometry geom = feat.getGeometry(); |
287 |
|
288 |
if (!setupLabel(feat, lc, cancel, usedFields, viewPort, dpi, duplicateMode, placedLabels))
|
289 |
continue;
|
290 |
|
291 |
// Check if size is a pixel
|
292 |
if (isOnePoint(viewPort, geom)) {
|
293 |
continue;
|
294 |
} |
295 |
|
296 |
ArrayList<LabelLocationMetrics> llm = null; |
297 |
// Calculate the label possible places
|
298 |
// if (placement instanceof PolygonPlacementOnCentroid){
|
299 |
// llm = ((PolygonPlacementOnCentroid)placement).guess(
|
300 |
// lc,
|
301 |
// (FShape)geom.getInternalShape(),
|
302 |
// getPlacementConstraints(),
|
303 |
// 0,
|
304 |
// cancel,viewPort);
|
305 |
// }else if(placement instanceof PolygonPlacementParallel){
|
306 |
// llm = ((PolygonPlacementParallel)placement).guess(
|
307 |
// lc,
|
308 |
// (FShape)geom.getInternalShape(),
|
309 |
// getPlacementConstraints(),
|
310 |
// 0,
|
311 |
// cancel,viewPort);
|
312 |
// }else{
|
313 |
// llm = placement.guess(
|
314 |
// lc,
|
315 |
// FConverter.transformToInts(geom, viewPort.getAffineTransform()),
|
316 |
// getPlacementConstraints(),
|
317 |
// 0,
|
318 |
// cancel);
|
319 |
// }
|
320 |
|
321 |
|
322 |
|
323 |
|
324 |
|
325 |
llm = placement.guess( |
326 |
lc, |
327 |
geom, |
328 |
getPlacementConstraints(), |
329 |
0,
|
330 |
cancel,viewPort); |
331 |
|
332 |
BufferedImage targetBI;
|
333 |
Graphics2D targetGr;
|
334 |
if (bLabelsReallocatable) {
|
335 |
targetBI = overlapDetectImage; |
336 |
targetGr = overlapDetectGraphics; |
337 |
} else {
|
338 |
// // -- visual FX stuff
|
339 |
// if (bVisualFXEnabled) {
|
340 |
// targetBI = visualFXim;
|
341 |
// targetGr = visualFXgr;
|
342 |
// } else {
|
343 |
// // -- end visual FX stuff
|
344 |
targetBI = mapImage; |
345 |
targetGr = mapGraphics; |
346 |
// }
|
347 |
} |
348 |
|
349 |
|
350 |
|
351 |
setReferenceSystem(lc.getReferenceSystem()); |
352 |
setUnit(lc.getUnit()); |
353 |
|
354 |
double sizeBefore = lc.getTextSymbol().getFont().getSize();
|
355 |
|
356 |
|
357 |
double sizeAfter = CartographicSupportToolkit.getCartographicLength(this, |
358 |
sizeBefore, |
359 |
viewPort, |
360 |
MapContext.getScreenDPI()); |
361 |
|
362 |
lc.getTextSymbol().setFontSize(sizeAfter * FConstant.FONT_HEIGHT_SCALE_FACTOR); |
363 |
|
364 |
|
365 |
/*
|
366 |
* search if there is room left by the previous and
|
367 |
* with more priority labels, then check the current
|
368 |
* level
|
369 |
*/
|
370 |
if (lookupAndPlaceLabel(targetBI, targetGr, llm,
|
371 |
placement, lc, geom, viewPort, cancel, bLabelsReallocatable)) { |
372 |
placedCount++; |
373 |
} else {
|
374 |
notPlacedCount++; |
375 |
} |
376 |
|
377 |
lc.getTextSymbol().setFontSize(sizeBefore); |
378 |
|
379 |
// // -- visual FX stuff
|
380 |
// if (bVisualFXEnabled && System.currentTimeMillis() - lastTime > drawEach) {
|
381 |
// lastTime = System.currentTimeMillis();
|
382 |
// mapGraphics.drawImage(visualFXim, null, null);
|
383 |
// }
|
384 |
// // -- end visual FX stuff
|
385 |
} |
386 |
|
387 |
if (bLabelsReallocatable) {
|
388 |
// // -- visual FX stuff
|
389 |
// if (bVisualFXEnabled)
|
390 |
// visualFXgr.drawImage(overlapDetectImage, null, null);
|
391 |
// else
|
392 |
// // -- end visual FX stuff
|
393 |
mapGraphics.drawImage(overlapDetectImage, null, null); |
394 |
} |
395 |
} |
396 |
|
397 |
int total = placedCount+notPlacedCount;
|
398 |
|
399 |
double totalTime = (System.currentTimeMillis()-t1); |
400 |
|
401 |
if (total>0) |
402 |
Logger.getLogger(getClass()).info("Labeled layer '"+layer.getName()+ |
403 |
"' "+totalTime/1000D+" seconds. "+placedCount+"/"+total+ |
404 |
" labels placed ("+NumberFormat.getInstance(). |
405 |
format(100*placedCount/(double) total)+"%)"); |
406 |
|
407 |
if (cancel.isCanceled()) {
|
408 |
Logger.getLogger(getClass()).info("Layer labeling canceled: '"+ |
409 |
layer.getName()+"'");
|
410 |
} else {
|
411 |
Logger.getLogger(getClass()).info("Total labels parse time = "+ |
412 |
parseTime+" ("+NumberFormat.getInstance(). |
413 |
format(parseTime*100/totalTime)+"%)"); |
414 |
} |
415 |
|
416 |
// // -- visual FX stuff
|
417 |
// if (bVisualFXEnabled) {
|
418 |
// mapGraphics.drawImage(visualFXim, null, null);
|
419 |
// }
|
420 |
// // -- end visual FX stuff
|
421 |
} |
422 |
|
423 |
private int getDuplicateLabelsMode() { |
424 |
if (getPlacementConstraints() == null) { |
425 |
return IPlacementConstraints.DefaultDuplicateLabelsMode;
|
426 |
} |
427 |
return getPlacementConstraints().getDuplicateLabelsMode();
|
428 |
} |
429 |
|
430 |
private boolean lookupAndPlaceLabel(BufferedImage bi, Graphics2D g, |
431 |
ArrayList<LabelLocationMetrics> llm, ILabelPlacement placement,
|
432 |
LabelClass lc, IGeometry geom, ViewPort viewPort, |
433 |
Cancellable cancel, boolean bLabelsReallocatable) {
|
434 |
int i;
|
435 |
|
436 |
for (i = 0; !cancel.isCanceled() && i < llm.size(); i++) { |
437 |
LabelLocationMetrics labelMetrics = llm.get(i); |
438 |
|
439 |
if (bLabelsReallocatable) {
|
440 |
if (!isOverlapping(bi, lc.getShape(labelMetrics))) {
|
441 |
if(!getPlacementConstraints().isFollowingLine()){
|
442 |
lc.draw(g, labelMetrics, (FShape) geom.getInternalShape()); |
443 |
} |
444 |
else{
|
445 |
SmartTextSymbolLabelClass smsLc = new SmartTextSymbolLabelClass();
|
446 |
SmartTextSymbol sms = new SmartTextSymbol(lc.getTextSymbol(),getPlacementConstraints());
|
447 |
smsLc.setTextSymbol(sms); |
448 |
geom.transform(viewPort.getAffineTransform()); |
449 |
smsLc.draw(g, null, (FShape) geom.getInternalShape());
|
450 |
|
451 |
} |
452 |
return true; |
453 |
} |
454 |
} else {
|
455 |
if(!getPlacementConstraints().isFollowingLine())
|
456 |
lc.draw(g, labelMetrics, null);
|
457 |
else{
|
458 |
SmartTextSymbolLabelClass smsLc = new SmartTextSymbolLabelClass();
|
459 |
SmartTextSymbol sms = new SmartTextSymbol(lc.getTextSymbol(),getPlacementConstraints());
|
460 |
smsLc.setTextSymbol(sms); |
461 |
geom.transform(viewPort.getAffineTransform()); |
462 |
smsLc.draw(g, null, (FShape) geom.getInternalShape());
|
463 |
} |
464 |
return true; |
465 |
} |
466 |
} |
467 |
return false; |
468 |
} |
469 |
|
470 |
@SuppressWarnings("unchecked") |
471 |
private boolean setupLabel(IFeature feat, LabelClass lc, |
472 |
Cancellable cancel, String[] usedFields, ViewPort viewPort, |
473 |
double dpi, int duplicateMode, TreeSet<?> placedLabels) { |
474 |
|
475 |
Value[] vv = feat.getAttributes();
|
476 |
String expr = lc.getStringLabelExpression();
|
477 |
|
478 |
long pt1 = System.currentTimeMillis(); |
479 |
String[] texts = NO_TEXT; |
480 |
// String[] texts = {PluginServices.getText(this, "text_field")};
|
481 |
try {
|
482 |
|
483 |
for (int i = 0; !cancel.isCanceled() && i < usedFields.length; i++) { |
484 |
try {
|
485 |
int index = layer.getSource().getRecordset().getFieldIndexByName(usedFields[i]);
|
486 |
if(index != -1) |
487 |
symbol_table.put(usedFields[i], feat.getAttribute(index)); |
488 |
} catch (ReadDriverException e) {
|
489 |
// TODO Auto-generated catch block
|
490 |
e.printStackTrace(); |
491 |
} |
492 |
} |
493 |
|
494 |
if (expr != null) { |
495 |
|
496 |
if(expr.equals("") || expr.equals(LabelExpressionParser.tokenFor(LabelExpressionParser.EOEXPR))) |
497 |
expr = texts[0];
|
498 |
|
499 |
// parse (if it hasn't been parsed yet) and evaluate the expression
|
500 |
Object labelContents = getEvaluator(expr).evaluate();
|
501 |
if (String[].class.equals(labelContents.getClass())) { |
502 |
texts = (String[]) labelContents; |
503 |
} else {
|
504 |
texts = new String[] { labelContents.toString() }; |
505 |
} |
506 |
parseTime += System.currentTimeMillis()-pt1;
|
507 |
} |
508 |
if (duplicateMode == IPlacementConstraints.REMOVE_DUPLICATE_LABELS) {
|
509 |
// check if this text (so label) is already present in the map
|
510 |
if (placedLabels.contains(texts))
|
511 |
// the label has already placed before
|
512 |
return false; |
513 |
|
514 |
/*
|
515 |
* the text is not present, it will be registered for next to
|
516 |
* be avoided
|
517 |
*/
|
518 |
((TreeSet<String[]>) placedLabels).add(texts); |
519 |
} |
520 |
lc.setTexts(texts); |
521 |
|
522 |
} catch (ExpressionException e) {
|
523 |
e.printStackTrace(); |
524 |
return false; |
525 |
} |
526 |
|
527 |
lc.toCartographicSize(viewPort, dpi, null);
|
528 |
return true; |
529 |
} |
530 |
private Hashtable<String, Value> symbol_table = new Hashtable<String, Value>(); |
531 |
private Hashtable<String, Expression> evaluators = new Hashtable<String, Expression>(); |
532 |
|
533 |
private Expression getEvaluator(String strExpr) { |
534 |
Expression expr = evaluators.get(strExpr);
|
535 |
if (expr == null) { |
536 |
LabelExpressionParser p = new LabelExpressionParser(
|
537 |
new StringReader(strExpr),symbol_table); |
538 |
|
539 |
try {
|
540 |
p.LabelExpression(); |
541 |
} catch (ParseException e) { |
542 |
e.printStackTrace(); |
543 |
} |
544 |
expr = (Expression) p.getStack().pop();
|
545 |
evaluators.put(strExpr, expr); |
546 |
} |
547 |
return expr;
|
548 |
} |
549 |
|
550 |
private boolean isOverlapping(BufferedImage bi, FShape labelShape) { |
551 |
|
552 |
Rectangle2D rPixels = labelShape.getBounds2D();
|
553 |
for (int i= (int) rPixels.getX(); i<rPixels.getMaxX(); i++){ |
554 |
for (int j= (int) rPixels.getY(); j<rPixels.getMaxY(); j++){ |
555 |
if (!labelShape.contains(i, j)) {
|
556 |
continue;
|
557 |
} |
558 |
|
559 |
if (i<0 || j<0) { |
560 |
continue;
|
561 |
} |
562 |
|
563 |
if (bi.getWidth()<i+1 || bi.getHeight()<j+1) { |
564 |
continue;
|
565 |
} |
566 |
|
567 |
if (bi.getRGB(i,j)!=0){ |
568 |
return true; |
569 |
} |
570 |
} |
571 |
} |
572 |
return false; |
573 |
} |
574 |
|
575 |
private boolean isOnePoint(ViewPort viewPort, IGeometry geom) { |
576 |
boolean onePoint = false; |
577 |
int shapeType = geom.getGeometryType();
|
578 |
if (shapeType!=FShape.POINT && shapeType!=FShape.MULTIPOINT) {
|
579 |
|
580 |
Rectangle2D geomBounds = geom.getBounds2D();
|
581 |
ICoordTrans ct = layer.getCoordTrans(); |
582 |
|
583 |
if (ct!=null) { |
584 |
geomBounds = ct.convert(geomBounds); |
585 |
} |
586 |
|
587 |
double dist1Pixel = viewPort.getDist1pixel();
|
588 |
onePoint = (geomBounds.getWidth() <= dist1Pixel |
589 |
&& geomBounds.getHeight() <= dist1Pixel); |
590 |
} |
591 |
return onePoint;
|
592 |
} |
593 |
|
594 |
public String getClassName() { |
595 |
return getClass().getName();
|
596 |
} |
597 |
|
598 |
public XMLEntity getXMLEntity() {
|
599 |
XMLEntity xml = new XMLEntity();
|
600 |
xml.putProperty("className", getClassName());
|
601 |
xml.putProperty("allowsOverlapping", allowOverlapping);
|
602 |
// xml.putProperty("minScaleView", minScaleView);
|
603 |
// xml.putProperty("maxScaleView", maxScaleView);
|
604 |
|
605 |
if (method!=null) { |
606 |
XMLEntity methodEntity = method.getXMLEntity(); |
607 |
methodEntity.putProperty("id", "LabelingMethod"); |
608 |
xml.addChild(methodEntity); |
609 |
} |
610 |
|
611 |
if (placementConstraints != null) { |
612 |
XMLEntity pcEntity = placementConstraints.getXMLEntity(); |
613 |
pcEntity.putProperty("id", "PlacementConstraints"); |
614 |
xml.addChild(pcEntity); |
615 |
} |
616 |
|
617 |
if (zoomConstraints != null) { |
618 |
XMLEntity zcEntity = zoomConstraints.getXMLEntity(); |
619 |
zcEntity.putProperty("id", "ZoomConstraints"); |
620 |
xml.addChild(zcEntity); |
621 |
} |
622 |
return xml;
|
623 |
} |
624 |
|
625 |
public void setXMLEntity(XMLEntity xml) { |
626 |
XMLEntity aux = xml.firstChild("id", "LabelingMethod"); |
627 |
|
628 |
// overlapping mode
|
629 |
if (xml.contains("allowsOverlapping")) { |
630 |
allowOverlapping = xml.getBooleanProperty("allowsOverlapping");
|
631 |
} |
632 |
|
633 |
|
634 |
if (aux != null) { |
635 |
method = LabelingFactory.createMethodFromXML(aux); |
636 |
} |
637 |
|
638 |
aux = xml.firstChild("id", "PlacementConstraints"); |
639 |
if (aux != null) { |
640 |
placementConstraints = LabelingFactory.createPlacementConstraintsFromXML(aux); |
641 |
} |
642 |
|
643 |
aux = xml.firstChild("id", "ZoomConstraints"); |
644 |
if (aux != null) { |
645 |
zoomConstraints = LabelingFactory.createZoomConstraintsFromXML(aux); |
646 |
} |
647 |
} |
648 |
|
649 |
public boolean isAllowingOverlap() { |
650 |
return allowOverlapping;
|
651 |
} |
652 |
|
653 |
public void setAllowOverlapping(boolean allowOverlapping) { |
654 |
this.allowOverlapping = allowOverlapping;
|
655 |
} |
656 |
|
657 |
public IPlacementConstraints getPlacementConstraints() {
|
658 |
if (placementConstraints != null) |
659 |
return placementConstraints;
|
660 |
|
661 |
try {
|
662 |
switch (layer.getShapeType()) {
|
663 |
case FShape.POINT:
|
664 |
case FShape.MULTIPOINT:
|
665 |
return DefaultPointPlacementConstraints;
|
666 |
case FShape.LINE:
|
667 |
return DefaultLinePlacementConstraints;
|
668 |
case FShape.POLYGON:
|
669 |
return DefaultPolygonPlacementConstraints;
|
670 |
case FShape.MULTI:
|
671 |
DefaultMultiShapePlacementConstratints.setPointConstraints(DefaultPointPlacementConstraints); |
672 |
DefaultMultiShapePlacementConstratints.setLineConstraints(DefaultLinePlacementConstraints); |
673 |
DefaultMultiShapePlacementConstratints.setPolygonConstraints(DefaultPolygonPlacementConstraints); |
674 |
return DefaultMultiShapePlacementConstratints;
|
675 |
} |
676 |
|
677 |
} catch (ReadDriverException e) {
|
678 |
|
679 |
} |
680 |
return null; |
681 |
} |
682 |
|
683 |
public void setPlacementConstraints(IPlacementConstraints constraints) { |
684 |
this.placementConstraints = constraints;
|
685 |
} |
686 |
|
687 |
public IZoomConstraints getZoomConstraints() {
|
688 |
return zoomConstraints;
|
689 |
} |
690 |
|
691 |
public void setZoomConstraints(IZoomConstraints constraints) { |
692 |
this.zoomConstraints = constraints;
|
693 |
} |
694 |
|
695 |
public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, PrintRequestAttributeSet properties) throws ReadDriverException { |
696 |
|
697 |
} |
698 |
|
699 |
public String[] getUsedFields() { |
700 |
LabelClass[] lcs = method.getLabelClasses();
|
701 |
ArrayList<String> fieldNames = new ArrayList<String>(); |
702 |
for (int i = 0; i < lcs.length; i++) { |
703 |
if(lcs[i].getLabelExpressions() != null){ |
704 |
for (int j = 0; j < lcs[i].getLabelExpressions().length; j++) { |
705 |
String expr = lcs[i].getLabelExpressions()[j];
|
706 |
int start;
|
707 |
while (expr != null && |
708 |
(start = expr.indexOf("[")) != -1) { |
709 |
int end = expr.indexOf("]"); |
710 |
String field = expr.substring(start+1, end).trim(); |
711 |
if (!fieldNames.contains(field))
|
712 |
fieldNames.add(field); |
713 |
expr = expr.substring(end+1, expr.length());
|
714 |
} |
715 |
} |
716 |
} |
717 |
} |
718 |
return fieldNames.toArray(new String[fieldNames.size()]); |
719 |
} |
720 |
|
721 |
|
722 |
public boolean shouldDrawLabels(double scale) { |
723 |
double minScaleView = -1; |
724 |
double maxScaleView = -1; |
725 |
|
726 |
if (zoomConstraints != null) { |
727 |
minScaleView = zoomConstraints.getMinScale(); |
728 |
maxScaleView = zoomConstraints.getMaxScale(); |
729 |
} |
730 |
|
731 |
if (minScaleView == -1 && maxScaleView == -1) { |
732 |
// parameters not set, so the layer decides.
|
733 |
return layer.isWithinScale(scale);
|
734 |
} |
735 |
|
736 |
if (minScaleView <= scale) {
|
737 |
return (maxScaleView != -1) ? maxScaleView >= scale : true; |
738 |
} |
739 |
|
740 |
return false; |
741 |
} |
742 |
|
743 |
public void setUnit(int unitIndex) { |
744 |
unit = unitIndex; |
745 |
|
746 |
} |
747 |
|
748 |
public int getUnit() { |
749 |
return unit;
|
750 |
} |
751 |
|
752 |
public int getReferenceSystem() { |
753 |
return referenceSystem;
|
754 |
} |
755 |
|
756 |
public void setReferenceSystem(int referenceSystem) { |
757 |
this.referenceSystem = referenceSystem;
|
758 |
} |
759 |
|
760 |
public double toCartographicSize(ViewPort viewPort, double dpi, FShape shp) { |
761 |
// TODO Auto-generated method stub
|
762 |
return 0; |
763 |
} |
764 |
|
765 |
public void setCartographicSize(double cartographicSize, FShape shp) { |
766 |
// TODO Auto-generated method stub
|
767 |
|
768 |
} |
769 |
|
770 |
public double getCartographicSize(ViewPort viewPort, double dpi, FShape shp) { |
771 |
// TODO Auto-generated method stub
|
772 |
return 0; |
773 |
} |
774 |
|
775 |
} |