Examples of org.geotools.styling.TextSymbolizer

org.geotools.styling.TextSymbolizer

l.opengeospatial.org/files/?artifact_id=1188"> OGC Styled-Layer Descriptor Report (OGC 02-070) version 1.0.0.:

 <xsd:element name="TextSymbolizer" substitutionGroup="sld:Symbolizer"> <xsd:annotation> <xsd:documentation> A "TextSymbolizer" is used to render text labels according to various graphical parameters. </xsd:documentation> </xsd:annotation> <xsd:complexType> <xsd:complexContent> <xsd:extension base="sld:SymbolizerType"> <xsd:sequence> <xsd:element ref="sld:Geometry" minOccurs="0"/> <xsd:element ref="sld:Label" minOccurs="0"/> <xsd:element ref="sld:Font" minOccurs="0"/> <xsd:element ref="sld:LabelPlacement" minOccurs="0"/> <xsd:element ref="sld:Halo" minOccurs="0"/> <xsd:element ref="sld:Fill" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element>

Renderers can use this information when displaying styled features, though it must be remembered that not all renderers will be able to fully represent strokes as set out by this interface. For example, opacity may not be supported.

Notes:

The graphical parameters and their values are derived from SVG/CSS2 standards with names and semantics which are as close as possible.

$Id$ @author Ian Turton, CCG @source $URL$

        String name = DEFAULT_GEOMETRY;


        Stroke stroke = null;
        Fill fill = null;
        Graphic graphic = null;
        TextSymbolizer text = null;
        LabelPlacement placement = null;


        List<Rule> rules = Collections.emptyList();
        if (fts != null)
            rules = fts.rules();
        if (rules.size() > 1) {
            // simple mode trimms away all but the first rule
            Rule keepRule = rules.get(0);
            rules.clear();
            rules.add(keepRule);
        }
        this.mode = determineMode(schema, true);


        if (mode == Mode.NONE) {
            pointMode.setSelection(false);
            polyMode.setSelection(false);
            lineMode.setSelection(false);
        } else if (mode == Mode.LINE) {
            lineMode.setSelection(true);
            LineSymbolizer sym = SLDs.lineSymbolizer(fts);
            stroke = SLDs.stroke(sym);
            placement = SLDs.getPlacement(SLDs.ALIGN_LEFT, SLDs.ALIGN_MIDDLE, 0);


            name = sym == null ? null : sym.getGeometryPropertyName();
        } else if (mode == Mode.POLYGON) {
            polyMode.setSelection(true);
            PolygonSymbolizer sym = SLDs.polySymbolizer(fts);
            stroke = SLDs.stroke(sym);
            fill = SLDs.fill(sym);
            placement = SLDs.getPlacement(SLDs.ALIGN_CENTER, SLDs.ALIGN_MIDDLE, 0);


            name = sym == null ? null : sym.getGeometryPropertyName();
        } else if (mode == Mode.POINT || mode == Mode.ALL) { // default to handling as Point
            pointMode.setSelection(true);


            PointSymbolizer sym = SLDs.pointSymbolizer(fts);
            stroke = SLDs.stroke(sym);
            fill = SLDs.fill(sym);
            graphic = SLDs.graphic(sym);
            placement = SLDs.getPlacement(SLDs.ALIGN_LEFT, SLDs.ALIGN_MIDDLE, 0);


            name = sym == null ? null : sym.getGeometryPropertyName();
        }


        text = SLDs.textSymbolizer(fts);
        if (text != null && placement != null) {
            text.setLabelPlacement(placement);
        }


        if (name == null) {
            name = DEFAULT_GEOMETRY;
            geometryName.getCombo().setText(name);

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    }


    /** Synchronize the SLD with the array of symbolizers */
    public void synchronize() {
        List<Symbolizer> acquire = new ArrayList<Symbolizer>();
        TextSymbolizer textSym = this.label.get(this.build);


        SimpleFeatureType schema = featureCollection.getSchema();
        this.mode = determineMode(schema, true);


        String geometryPropertyName = null;

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    }


    public void test() throws Exception {
        SLDMockData.textSymbolizer(document, document);


        TextSymbolizer ts = (TextSymbolizer) parse();
        assertNotNull(ts);
        assertNotNull(ts.getFill());
        assertEquals(1, ts.getFonts().length);
        assertNotNull(ts.getGeometryPropertyName());
        assertNotNull(ts.getPlacement());
        assertNotNull(ts.getHalo());
        assertNotNull(ts.getLabel());
    }

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    }
    
    public void testWithVendorOptions() throws Exception {
        SLDMockData.textSymbolizerWithVendorOptions(document, document);
        
        TextSymbolizer ts = (TextSymbolizer) parse();
        assertNotNull(ts);
        
        //vendorOption(document, textSymbolizer, "followLine", "true");
        //vendorOption(document, textSymbolizer, "spaceAround", "10");
        assertEquals("true", ts.getOptions().get("followLine"));
        assertEquals("10", ts.getOptions().get("spaceAround"));
    }

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        <Fill>
            <SvgParameter name="fill">#000000</SvgParameter>
        </Fill>
    </TextSymbolizer>*/
        
        TextSymbolizer sym = (TextSymbolizer) parse("example-textsymbolizer.xml");
        assertEquals("MyTextSymbolizer", sym.getName());
        assertEquals("Example TextSymbolizer", sym.getDescription().getTitle().toString());
        assertEquals("This is just an example of a text symbolizer using the FormatNumber function.", 
            sym.getDescription().getAbstract().toString());
        
        assertEquals("locatedAt", sym.getGeometryPropertyName());
        
        Function l = (Function) sym.getLabel();
        assertEquals("foobar (10)", l.evaluate(f1));
        //assertEquals("hospitalName", l);
        
        Font f = sym.getFont();
        assertEquals(2, f.getFamily().size());
        assertEquals("Arial", f.getFamily().get(0).evaluate(null, String.class));
        assertEquals("Sans-Serif", f.getFamily().get(1).evaluate(null, String.class));
        assertEquals("italic", f.getStyle().evaluate(null, String.class));
        assertEquals("10", f.getSize().evaluate(null, String.class));
        
        Fill fill = sym.getFill();
        assertEquals(Color.BLACK, fill.getColor().evaluate(null, Color.class));
    }

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        PointSymbolizer point = (PointSymbolizer) rule.symbolizers().get(2);
        assertEquals(1, point.getOptions().size());
        assertEquals("true", point.getOptions().get("labelObstacle"));
        
        TextSymbolizer text = (TextSymbolizer) rule.symbolizers().get(3);
        assertEquals(1, text.getOptions().size());
        assertEquals("100", text.getOptions().get("repeat"));
        
        // check it passes validation
        List errors = validate(file);
        assertEquals(0, errors.size());
    }

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     *
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value)
        throws Exception {
        TextSymbolizer ts = styleFactory.createTextSymbolizer();


        //&lt;xsd:element ref="sld:Geometry" minOccurs="0"/&gt;
        if(node.hasChild("Geometry")) {
            Expression geometry = (Expression) node.getChildValue("Geometry");
            if(geometry instanceof PropertyName) {
                PropertyName propertyName = (PropertyName) geometry;
                ts.setGeometryPropertyName(propertyName.getPropertyName());
            } else {
                ts.setGeometry(geometry);
            }
        }


        //&lt;xsd:element ref="sld:Label" minOccurs="0"/&gt;
        if (node.hasChild("Label")) {
            ts.setLabel((Expression) node.getChildValue("Label"));
        }


        //&lt;xsd:element ref="sld:Font" minOccurs="0"/&gt;
        if (node.hasChild("Font")) {
            ts.setFonts(new Font[] { (Font) node.getChildValue("Font") });
        }


        //&lt;xsd:element ref="sld:LabelPlacement" minOccurs="0"/&gt;
        if (node.hasChild("LabelPlacement")) {
            ts.setPlacement((LabelPlacement) node.getChildValue("LabelPlacement"));
        }


        //&lt;xsd:element ref="sld:Halo" minOccurs="0"/&gt;
        if (node.hasChild("Halo")) {
            ts.setHalo((Halo) node.getChildValue("Halo"));
        }


        //&lt;xsd:element ref="sld:Fill" minOccurs="0"/&gt;
        if (node.hasChild("Fill")) {
            ts.setFill((Fill) node.getChildValue("Fill"));
        }


        //&lt;xsd:element ref="sld:VendorOption" minOccurs="0" maxOccurs="unbounded"/&gt;
        for (CssParameter param : (List<CssParameter>) node.getChildValues(CssParameter.class)) {
            ts.getOptions().put(param.getName(), param.getExpression().evaluate(null, String.class));
        }
        return ts;
    }

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        assertEquals(20.0f, clone.getDashArray()[1], 0d);
    }
    
    @Test
    public void testTextSymbolizer() throws Exception {
        TextSymbolizer ts = sb.createTextSymbolizer(Color.BLACK, (Font) null, "label");
        ts.getOptions().put(TextSymbolizer.MAX_DISPLACEMENT_KEY, "10");
        ts.getOptions().put(TextSymbolizer.GRAPHIC_MARGIN_KEY, "10 20");
        
        ts.accept(visitor);
        TextSymbolizer clone = (TextSymbolizer) visitor.getCopy();
        assertEquals("20", clone.getOptions().get(TextSymbolizer.MAX_DISPLACEMENT_KEY));
        assertEquals("20 40", clone.getOptions().get(TextSymbolizer.GRAPHIC_MARGIN_KEY));
    }

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        assertEquals("20 40", clone.getOptions().get(TextSymbolizer.GRAPHIC_MARGIN_KEY));
    }
    
    @Test
    public void testTextSymbolizerArraySingleValue() throws Exception {
        TextSymbolizer ts = sb.createTextSymbolizer(Color.BLACK, (Font) null, "label");
        ts.getOptions().put(TextSymbolizer.GRAPHIC_MARGIN_KEY, "10");
        
        ts.accept(visitor);
        TextSymbolizer clone = (TextSymbolizer) visitor.getCopy();
        assertEquals("20", clone.getOptions().get(TextSymbolizer.GRAPHIC_MARGIN_KEY));
    }

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            placement = build.createLinePlacement(offset);
        }
        this.labelPlacement = placement;


        Expression exp = (Expression) CommonFactoryFinder.getFilterFactory(GeoTools.getDefaultHints()).property(this.labelType);
        TextSymbolizer text = build.createTextSymbolizer(fill, new Font[]{gtFont}, null, exp, placement, null);
        if (SLDs.isLine(this.schema)) {
            text.getOptions().put("group", "yes"); //$NON-NLS-1$ //$NON-NLS-2$
        }
        text.getOptions().put("spaceAround", "2"); //$NON-NLS-1$ //$NON-NLS-2$
        return text;
    }

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