source: josm/trunk/src/org/openstreetmap/josm/gui/mappaint/ElemStyles.java@ 7447

Last change on this file since 7447 was 7447, checked in by bastiK, 10 years ago

fixed #10425 - ConcurrentModificationException when auto update mappaint file
  • Property svn:eol-style set to native
File size: 19.1 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui.mappaint;
3
4import java.awt.Color;
5import java.util.ArrayList;
6import java.util.Collection;
7import java.util.Collections;
8import java.util.Iterator;
9import java.util.List;
10import java.util.Map.Entry;
11
12import org.openstreetmap.josm.data.osm.Node;
13import org.openstreetmap.josm.data.osm.OsmPrimitive;
14import org.openstreetmap.josm.data.osm.Relation;
15import org.openstreetmap.josm.data.osm.Way;
16import org.openstreetmap.josm.data.osm.visitor.paint.relations.Multipolygon;
17import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache;
18import org.openstreetmap.josm.gui.NavigatableComponent;
19import org.openstreetmap.josm.gui.mappaint.StyleCache.StyleList;
20import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSStyleSource;
21import org.openstreetmap.josm.gui.util.GuiHelper;
22import org.openstreetmap.josm.tools.Pair;
23import org.openstreetmap.josm.tools.Utils;
24
25public class ElemStyles {
26 private List<StyleSource> styleSources;
27 private boolean drawMultipolygon;
28
29 private int cacheIdx = 1;
30
31 private boolean defaultNodes, defaultLines;
32 private int defaultNodesIdx, defaultLinesIdx;
33
34 /**
35 * Constructs a new {@code ElemStyles}.
36 */
37 public ElemStyles() {
38 styleSources = new ArrayList<>();
39 }
40
41 /**
42 * Clear the style cache for all primitives of all DataSets.
43 */
44 public void clearCached() {
45 // run in EDT to make sure this isn't called during rendering run
46 // {@link org.openstreetmap.josm.data.osm.visitor.paint.StyledMapRenderer#render}
47 GuiHelper.runInEDT(new Runnable() {
48 @Override
49 public void run() {
50 cacheIdx++;
51 }
52 });
53 }
54
55 public List<StyleSource> getStyleSources() {
56 return Collections.<StyleSource>unmodifiableList(styleSources);
57 }
58
59 /**
60 * Create the list of styles for one primitive.
61 *
62 * @param osm the primitive
63 * @param scale the scale (in meters per 100 pixel)
64 * @param nc display component
65 * @return list of styles
66 */
67 public StyleList get(OsmPrimitive osm, double scale, NavigatableComponent nc) {
68 return getStyleCacheWithRange(osm, scale, nc).a;
69 }
70
71 /**
72 * Create the list of styles and its valid scale range for one primitive.
73 *
74 * Automatically adds default styles in case no proper style was found.
75 * Uses the cache, if possible, and saves the results to the cache.
76 */
77 public Pair<StyleList, Range> getStyleCacheWithRange(OsmPrimitive osm, double scale, NavigatableComponent nc) {
78 if (osm.mappaintStyle == null || osm.mappaintCacheIdx != cacheIdx || scale <= 0) {
79 osm.mappaintStyle = StyleCache.EMPTY_STYLECACHE;
80 } else {
81 Pair<StyleList, Range> lst = osm.mappaintStyle.getWithRange(scale);
82 if (lst.a != null)
83 return lst;
84 }
85 Pair<StyleList, Range> p = getImpl(osm, scale, nc);
86 if (osm instanceof Node && isDefaultNodes()) {
87 if (p.a.isEmpty()) {
88 if (TextElement.AUTO_LABEL_COMPOSITION_STRATEGY.compose(osm) != null) {
89 p.a = NodeElemStyle.DEFAULT_NODE_STYLELIST_TEXT;
90 } else {
91 p.a = NodeElemStyle.DEFAULT_NODE_STYLELIST;
92 }
93 } else {
94 boolean hasNonModifier = false;
95 boolean hasText = false;
96 for (ElemStyle s : p.a) {
97 if (s instanceof BoxTextElemStyle) {
98 hasText = true;
99 } else {
100 if (!s.isModifier) {
101 hasNonModifier = true;
102 }
103 }
104 }
105 if (!hasNonModifier) {
106 p.a = new StyleList(p.a, NodeElemStyle.SIMPLE_NODE_ELEMSTYLE);
107 if (!hasText) {
108 if (TextElement.AUTO_LABEL_COMPOSITION_STRATEGY.compose(osm) != null) {
109 p.a = new StyleList(p.a, BoxTextElemStyle.SIMPLE_NODE_TEXT_ELEMSTYLE);
110 }
111 }
112 }
113 }
114 } else if (osm instanceof Way && isDefaultLines()) {
115 boolean hasProperLineStyle = false;
116 for (ElemStyle s : p.a) {
117 if (s.isProperLineStyle()) {
118 hasProperLineStyle = true;
119 break;
120 }
121 }
122 if (!hasProperLineStyle) {
123 AreaElemStyle area = Utils.find(p.a, AreaElemStyle.class);
124 LineElemStyle line = area == null ? LineElemStyle.UNTAGGED_WAY : LineElemStyle.createSimpleLineStyle(area.color, true);
125 p.a = new StyleList(p.a, line);
126 }
127 }
128 StyleCache style = osm.mappaintStyle != null ? osm.mappaintStyle : StyleCache.EMPTY_STYLECACHE;
129 try {
130 osm.mappaintStyle = style.put(p.a, p.b);
131 } catch (StyleCache.RangeViolatedError e) {
132 throw new AssertionError("Range violated. object: " + osm.getPrimitiveId() + ", current style: "+osm.mappaintStyle
133 + ", scale: " + scale + ", new stylelist: " + p.a + ", new range: " + p.b, e);
134 }
135 osm.mappaintCacheIdx = cacheIdx;
136 return p;
137 }
138
139 /**
140 * Create the list of styles and its valid scale range for one primitive.
141 *
142 * This method does multipolygon handling.
143 *
144 *
145 * There are different tagging styles for multipolygons, that have to be respected:
146 * - tags on the relation
147 * - tags on the outer way
148 * - tags on both, the outer and the inner way (very old style)
149 *
150 * If the primitive is a way, look for multipolygon parents. In case it
151 * is indeed member of some multipolygon as role "outer", all area styles
152 * are removed. (They apply to the multipolygon area.)
153 * Outer ways can have their own independent line styles, e.g. a road as
154 * boundary of a forest. Otherwise, in case, the way does not have an
155 * independent line style, take a line style from the multipolygon.
156 * If the multipolygon does not have a line style either, at least create a
157 * default line style from the color of the area.
158 *
159 * Now consider the case that the way is not an outer way of any multipolygon,
160 * but is member of a multipolygon as "inner".
161 * First, the style list is regenerated, considering only tags of this way
162 * minus the tags of outer way of the multipolygon (to care for the "very
163 * old style").
164 * Then check, if the way describes something in its own right. (linear feature
165 * or area) If not, add a default line style from the area color of the multipolygon.
166 *
167 */
168 private Pair<StyleList, Range> getImpl(OsmPrimitive osm, double scale, NavigatableComponent nc) {
169 if (osm instanceof Node)
170 return generateStyles(osm, scale, null, false);
171 else if (osm instanceof Way)
172 {
173 Pair<StyleList, Range> p = generateStyles(osm, scale, null, false);
174
175 boolean isOuterWayOfSomeMP = false;
176 Color wayColor = null;
177
178 for (OsmPrimitive referrer : osm.getReferrers()) {
179 Relation r = (Relation) referrer;
180 if (!drawMultipolygon || !r.isMultipolygon() || !r.isUsable()) {
181 continue;
182 }
183 Multipolygon multipolygon = MultipolygonCache.getInstance().get(nc, r);
184
185 if (multipolygon.getOuterWays().contains(osm)) {
186 boolean hasIndependentLineStyle = false;
187 if (!isOuterWayOfSomeMP) { // do this only one time
188 List<ElemStyle> tmp = new ArrayList<>(p.a.size());
189 for (ElemStyle s : p.a) {
190 if (s instanceof AreaElemStyle) {
191 wayColor = ((AreaElemStyle) s).color;
192 } else {
193 tmp.add(s);
194 if (s.isProperLineStyle()) {
195 hasIndependentLineStyle = true;
196 }
197 }
198 }
199 p.a = new StyleList(tmp);
200 isOuterWayOfSomeMP = true;
201 }
202
203 if (!hasIndependentLineStyle) {
204 Pair<StyleList, Range> mpElemStyles;
205 synchronized(r) {
206 mpElemStyles = getStyleCacheWithRange(r, scale, nc);
207 }
208 ElemStyle mpLine = null;
209 for (ElemStyle s : mpElemStyles.a) {
210 if (s.isProperLineStyle()) {
211 mpLine = s;
212 break;
213 }
214 }
215 p.b = Range.cut(p.b, mpElemStyles.b);
216 if (mpLine != null) {
217 p.a = new StyleList(p.a, mpLine);
218 break;
219 } else if (wayColor == null && isDefaultLines()) {
220 AreaElemStyle mpArea = Utils.find(mpElemStyles.a, AreaElemStyle.class);
221 if (mpArea != null) {
222 wayColor = mpArea.color;
223 }
224 }
225 }
226 }
227 }
228 if (isOuterWayOfSomeMP) {
229 if (isDefaultLines()) {
230 boolean hasLineStyle = false;
231 for (ElemStyle s : p.a) {
232 if (s.isProperLineStyle()) {
233 hasLineStyle = true;
234 break;
235 }
236 }
237 if (!hasLineStyle) {
238 p.a = new StyleList(p.a, LineElemStyle.createSimpleLineStyle(wayColor, true));
239 }
240 }
241 return p;
242 }
243
244 if (!isDefaultLines()) return p;
245
246 for (OsmPrimitive referrer : osm.getReferrers()) {
247 Relation ref = (Relation) referrer;
248 if (!drawMultipolygon || !ref.isMultipolygon() || !ref.isUsable()) {
249 continue;
250 }
251 final Multipolygon multipolygon = MultipolygonCache.getInstance().get(nc, ref);
252
253 if (multipolygon.getInnerWays().contains(osm)) {
254 Iterator<Way> it = multipolygon.getOuterWays().iterator();
255 p = generateStyles(osm, scale, it.hasNext() ? it.next() : null, false);
256 boolean hasIndependentElemStyle = false;
257 for (ElemStyle s : p.a) {
258 if (s.isProperLineStyle() || s instanceof AreaElemStyle) {
259 hasIndependentElemStyle = true;
260 break;
261 }
262 }
263 if (!hasIndependentElemStyle && !multipolygon.getOuterWays().isEmpty()) {
264 Color mpColor = null;
265 StyleList mpElemStyles = null;
266 synchronized (ref) {
267 mpElemStyles = get(ref, scale, nc);
268 }
269 for (ElemStyle mpS : mpElemStyles) {
270 if (mpS instanceof AreaElemStyle) {
271 mpColor = ((AreaElemStyle) mpS).color;
272 break;
273 }
274 }
275 p.a = new StyleList(p.a, LineElemStyle.createSimpleLineStyle(mpColor, true));
276 }
277 return p;
278 }
279 }
280 return p;
281 }
282 else if (osm instanceof Relation)
283 {
284 Pair<StyleList, Range> p = generateStyles(osm, scale, null, true);
285 if (drawMultipolygon && ((Relation)osm).isMultipolygon()) {
286 if (!Utils.exists(p.a, AreaElemStyle.class)) {
287 // look at outer ways to find area style
288 Multipolygon multipolygon = MultipolygonCache.getInstance().get(nc, (Relation) osm);
289 for (Way w : multipolygon.getOuterWays()) {
290 Pair<StyleList, Range> wayStyles = generateStyles(w, scale, null, false);
291 p.b = Range.cut(p.b, wayStyles.b);
292 ElemStyle area = Utils.find(wayStyles.a, AreaElemStyle.class);
293 if (area != null) {
294 p.a = new StyleList(p.a, area);
295 break;
296 }
297 }
298 }
299 }
300 return p;
301 }
302 return null;
303 }
304
305 /**
306 * Create the list of styles and its valid scale range for one primitive.
307 *
308 * Loops over the list of style sources, to generate the map of properties.
309 * From these properties, it generates the different types of styles.
310 *
311 * @param osm the primitive to create styles for
312 * @param scale the scale (in meters per 100 px), must be &gt; 0
313 * @param multipolyOuterWay support for a very old multipolygon tagging style
314 * where you add the tags both to the outer and the inner way.
315 * However, independent inner way style is also possible.
316 * @param pretendWayIsClosed For styles that require the way to be closed,
317 * we pretend it is. This is useful for generating area styles from the (segmented)
318 * outer ways of a multipolygon.
319 * @return the generated styles and the valid range as a pair
320 */
321 public Pair<StyleList, Range> generateStyles(OsmPrimitive osm, double scale, OsmPrimitive multipolyOuterWay, boolean pretendWayIsClosed) {
322
323 List<ElemStyle> sl = new ArrayList<>();
324 MultiCascade mc = new MultiCascade();
325 Environment env = new Environment(osm, mc, null, null);
326
327 for (StyleSource s : styleSources) {
328 if (s.active) {
329 s.apply(mc, osm, scale, multipolyOuterWay, pretendWayIsClosed);
330 }
331 }
332
333 for (Entry<String, Cascade> e : mc.getLayers()) {
334 if ("*".equals(e.getKey())) {
335 continue;
336 }
337 env.layer = e.getKey();
338 if (osm instanceof Way) {
339 addIfNotNull(sl, AreaElemStyle.create(env));
340 addIfNotNull(sl, RepeatImageElemStyle.create(env));
341 addIfNotNull(sl, LineElemStyle.createLine(env));
342 addIfNotNull(sl, LineElemStyle.createLeftCasing(env));
343 addIfNotNull(sl, LineElemStyle.createRightCasing(env));
344 addIfNotNull(sl, LineElemStyle.createCasing(env));
345 addIfNotNull(sl, LineTextElemStyle.create(env));
346 } else if (osm instanceof Node) {
347 NodeElemStyle nodeStyle = NodeElemStyle.create(env);
348 if (nodeStyle != null) {
349 sl.add(nodeStyle);
350 addIfNotNull(sl, BoxTextElemStyle.create(env, nodeStyle.getBoxProvider()));
351 } else {
352 addIfNotNull(sl, BoxTextElemStyle.create(env, NodeElemStyle.SIMPLE_NODE_ELEMSTYLE.getBoxProvider()));
353 }
354 } else if (osm instanceof Relation) {
355 if (((Relation)osm).isMultipolygon()) {
356 addIfNotNull(sl, AreaElemStyle.create(env));
357 addIfNotNull(sl, RepeatImageElemStyle.create(env));
358 addIfNotNull(sl, LineElemStyle.createLine(env));
359 addIfNotNull(sl, LineElemStyle.createCasing(env));
360 addIfNotNull(sl, LineTextElemStyle.create(env));
361 } else if ("restriction".equals(osm.get("type"))) {
362 addIfNotNull(sl, NodeElemStyle.create(env));
363 }
364 }
365 }
366 return new Pair<>(new StyleList(sl), mc.range);
367 }
368
369 private static <T> void addIfNotNull(List<T> list, T obj) {
370 if (obj != null) {
371 list.add(obj);
372 }
373 }
374
375 /**
376 * Draw a default node symbol for nodes that have no style?
377 */
378 private boolean isDefaultNodes() {
379 if (defaultNodesIdx == cacheIdx)
380 return defaultNodes;
381 defaultNodes = fromCanvas("default-points", true, Boolean.class);
382 defaultNodesIdx = cacheIdx;
383 return defaultNodes;
384 }
385
386 /**
387 * Draw a default line for ways that do not have an own line style?
388 */
389 private boolean isDefaultLines() {
390 if (defaultLinesIdx == cacheIdx)
391 return defaultLines;
392 defaultLines = fromCanvas("default-lines", true, Boolean.class);
393 defaultLinesIdx = cacheIdx;
394 return defaultLines;
395 }
396
397 private <T> T fromCanvas(String key, T def, Class<T> c) {
398 MultiCascade mc = new MultiCascade();
399 Relation r = new Relation();
400 r.put("#canvas", "query");
401
402 for (StyleSource s : styleSources) {
403 if (s.active) {
404 s.apply(mc, r, 1, null, false);
405 }
406 }
407 return mc.getCascade("default").get(key, def, c);
408 }
409
410 public boolean isDrawMultipolygon() {
411 return drawMultipolygon;
412 }
413
414 public void setDrawMultipolygon(boolean drawMultipolygon) {
415 this.drawMultipolygon = drawMultipolygon;
416 }
417
418 /**
419 * remove all style sources; only accessed from MapPaintStyles
420 */
421 void clear() {
422 styleSources.clear();
423 }
424
425 /**
426 * add a style source; only accessed from MapPaintStyles
427 */
428 void add(StyleSource style) {
429 styleSources.add(style);
430 }
431
432 /**
433 * set the style sources; only accessed from MapPaintStyles
434 */
435 void setStyleSources(Collection<StyleSource> sources) {
436 styleSources.clear();
437 styleSources.addAll(sources);
438 }
439
440 /**
441 * Returns the first AreaElemStyle for a given primitive.
442 * @param p the OSM primitive
443 * @param pretendWayIsClosed For styles that require the way to be closed,
444 * we pretend it is. This is useful for generating area styles from the (segmented)
445 * outer ways of a multipolygon.
446 * @return first AreaElemStyle found or {@code null}.
447 */
448 public static AreaElemStyle getAreaElemStyle(OsmPrimitive p, boolean pretendWayIsClosed) {
449 synchronized (MapCSSStyleSource.STYLE_SOURCE_LOCK) {
450 if (MapPaintStyles.getStyles() == null)
451 return null;
452 for (ElemStyle s : MapPaintStyles.getStyles().generateStyles(p, 1.0, null, pretendWayIsClosed).a) {
453 if (s instanceof AreaElemStyle)
454 return (AreaElemStyle) s;
455 }
456 return null;
457 }
458 }
459
460 /**
461 * Determines whether primitive has an AreaElemStyle.
462 * @param p the OSM primitive
463 * @param pretendWayIsClosed For styles that require the way to be closed,
464 * we pretend it is. This is useful for generating area styles from the (segmented)
465 * outer ways of a multipolygon.
466 * @return {@code true} if primitive has an AreaElemStyle
467 */
468 public static boolean hasAreaElemStyle(OsmPrimitive p, boolean pretendWayIsClosed) {
469 return getAreaElemStyle(p, pretendWayIsClosed) != null;
470 }
471}
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