package org.geotools.renderer.label;
import static org.junit.Assert.assertEquals;
import java.awt.Color;
import java.util.Arrays;
import java.util.List;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.geometry.jts.LiteShape2;
import org.geotools.referencing.crs.DefaultGeographicCRS;
import org.geotools.styling.Font;
import org.geotools.styling.StyleBuilder;
import org.geotools.styling.TextSymbolizer;
import org.geotools.util.NumberRange;
import org.junit.Before;
import org.junit.Test;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;
public class LabelCacheImplTest {
private static final Geometry L3 = geometry("LINESTRING(20 20, 30 30)");
private static final Geometry L2 = geometry("LINESTRING(10 10, 20 20)");
private static final Geometry L1 = geometry("LINESTRING(0 0, 10 10)");
private static final String LAYER_ID = "layerId";
SimpleFeatureType schema;
SimpleFeatureBuilder fb;
LabelCacheImpl cache;
StyleBuilder sb;
NumberRange<Double> ALL_SCALES = new NumberRange<Double>(Double.class,
Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY);
@Before
public void setupSchema() {
SimpleFeatureTypeBuilder tb = new SimpleFeatureTypeBuilder();
tb.setName("test");
tb.add("name", String.class);
tb.add("geom", LineString.class, DefaultGeographicCRS.WGS84);
schema = tb.buildFeatureType();
fb = new SimpleFeatureBuilder(schema);
cache = new LabelCacheImpl();
cache.startLayer(LAYER_ID);
sb = new StyleBuilder();
}
@Test
public void testSimpleGrouping() throws Exception {
TextSymbolizer ts = sb.createTextSymbolizer(Color.BLACK, (Font) null, "name");
ts.getOptions().put(TextSymbolizer.GROUP_KEY, "true");
SimpleFeature f1 = createFeature("label1", L1);
SimpleFeature f2 = createFeature("label1", L2);
cache.put(LAYER_ID, ts, f1, new LiteShape2((Geometry) f1.getDefaultGeometry(), null, null,
false), ALL_SCALES);
cache.put(LAYER_ID, ts, f2, new LiteShape2((Geometry) f2.getDefaultGeometry(), null, null,
false), ALL_SCALES);
// we have just one
List<LabelCacheItem> labels = cache.getActiveLabels();
assertEquals(1, labels.size());
LabelCacheItem item = labels.get(0);
assertEquals("label1", item.getLabel());
assertEquals(2, item.getGeoms().size());
}
@Test
public void testGroupDifferentSymbolizers() throws Exception {
TextSymbolizer ts1 = sb.createTextSymbolizer(Color.BLACK, (Font) null, "name");
ts1.getOptions().put(TextSymbolizer.GROUP_KEY, "true");
TextSymbolizer ts2 = sb.createTextSymbolizer(Color.YELLOW, (Font) null, "name");
ts2.getOptions().put(TextSymbolizer.GROUP_KEY, "true");
SimpleFeature f1 = createFeature("label1", L1);
SimpleFeature f2 = createFeature("label1", L2);
cache.put(LAYER_ID, ts1, f1, new LiteShape2((Geometry) f1.getDefaultGeometry(), null, null,
false), ALL_SCALES);
cache.put(LAYER_ID, ts2, f2, new LiteShape2((Geometry) f2.getDefaultGeometry(), null, null,
false), ALL_SCALES);
// two different symbolizers, we should have two
List<LabelCacheItem> labels = cache.getActiveLabels();
assertEquals(2, labels.size());
}
@Test
public void testMinNonGrouped() throws Exception {
TextSymbolizer ts = sb.createTextSymbolizer(Color.BLACK, (Font) null, "name");
TextSymbolizer tsGroup = sb.createTextSymbolizer(Color.YELLOW, (Font) null, "name");
tsGroup.getOptions().put(TextSymbolizer.GROUP_KEY, "true");
SimpleFeature f1 = createFeature("label1", L1);
SimpleFeature f2 = createFeature("label1", L2);
SimpleFeature f3 = createFeature("label1", L3);
cache.put(LAYER_ID, tsGroup, f1, new LiteShape2((Geometry) f1.getDefaultGeometry(), null, null,
false), ALL_SCALES);
cache.put(LAYER_ID, ts, f2, new LiteShape2((Geometry) f2.getDefaultGeometry(), null, null,
false), ALL_SCALES);
cache.put(LAYER_ID, tsGroup, f3, new LiteShape2((Geometry) f3.getDefaultGeometry(), null, null,
false), ALL_SCALES);
// two different symbolizers, we should have two (the first grouped with the third)
List<LabelCacheItem> labels = cache.getActiveLabels();
assertEquals(2, labels.size());
LabelCacheItem item1 = labels.get(0);
assertEquals("label1", item1.getLabel());
assertEquals(Arrays.asList(L1, L3), item1.getGeoms());
LabelCacheItem item2 = labels.get(1);
assertEquals("label1", item2.getLabel());
assertEquals(Arrays.asList(L2), item2.getGeoms());
}
private SimpleFeature createFeature(String label, Geometry geom) {
fb.add(label);
fb.add(geom);
return fb.buildFeature(null);
}
private static Geometry geometry(String wkt) {
try {
return new WKTReader().read(wkt);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
}