Examples with Halo org.opengis.style.Halo used on opensource projects

Example 1 with Halo

use of org.opengis.style.Halo in project geotoolkit by Geomatys.

the class TextSymbolizerTest method pointLabelTest.

/**
 * Render a label at check it is correctly located in the image.
 */
@Test
public void pointLabelTest() throws Exception {
    final FeatureTypeBuilder ftb = new FeatureTypeBuilder();
    ftb.setName("test");
    ftb.addAttribute(Point.class).setName("geom").setCRS(CommonCRS.defaultGeographic()).addRole(AttributeRole.DEFAULT_GEOMETRY);
    final FeatureType type = ftb.build();
    final Feature feature = type.newInstance();
    feature.setPropertyValue("geom", GF.createPoint(new Coordinate(0, 0)));
    final FeatureSet collection = new InMemoryFeatureSet(type, Arrays.asList(feature));
    // text symbolizer style
    final String name = "mySymbol";
    final Description desc = DEFAULT_DESCRIPTION;
    // use the default geometry of the feature
    final String geometry = null;
    final Unit unit = Units.POINT;
    final Expression label = FF.literal("LABEL");
    final Font font = SF.font(FF.literal("Arial"), FONT_STYLE_ITALIC, FONT_WEIGHT_BOLD, FF.literal(14));
    final LabelPlacement placement = SF.pointPlacement();
    final Halo halo = SF.halo(Color.WHITE, 0);
    final Fill fill = SF.fill(Color.BLUE);
    final TextSymbolizer symbol = SF.textSymbolizer(name, geometry, desc, unit, label, font, placement, halo, fill);
    final MutableStyle style = SF.style(symbol);
    final MapLayer layer = MapBuilder.createLayer(collection);
    layer.setStyle(style);
    final MapLayers context = MapBuilder.createContext();
    context.getComponents().add(layer);
    final GeneralEnvelope env = new GeneralEnvelope(CommonCRS.defaultGeographic());
    env.setRange(0, -180, +180);
    env.setRange(1, -90, +90);
    final Hints hints = new Hints();
    hints.put(GO2Hints.KEY_COLOR_MODEL, ColorModel.getRGBdefault());
    final SceneDef scenedef = new SceneDef(context, hints);
    final CanvasDef canvasdef = new CanvasDef(new Dimension(360, 180), env);
    canvasdef.setBackground(Color.WHITE);
    final BufferedImage buffer = DefaultPortrayalService.portray(canvasdef, scenedef);
    // ImageIO.write(buffer, "PNG", new File("test.png"));
    // we expect to have a blue label at the center of the image
    final int[] pixel = new int[4];
    final int[] blue = new int[] { 0, 0, 255, 255 };
    final Raster raster = buffer.getData();
    boolean found = false;
    for (int x = 160; x < 200; x++) {
        // should be exactly at the center
        raster.getPixel(x, 90, pixel);
        if (Arrays.equals(blue, pixel)) {
            found = true;
        }
    }
    assertTrue("label not found", found);
}

Example 2 with Halo

use of org.opengis.style.Halo in project geotoolkit by Geomatys.

the class Tester method createTextSymbolizer.

private static TextSymbolizer createTextSymbolizer() {
    String name = "Text symbolizer name";
    Description desc = STYLE_FACTORY.description("Text symbolizer title", "Text symbolizer description");
    Unit uom = Units.FOOT;
    String geom = "geom";
    Fill fill = STYLE_FACTORY.fill(Color.ORANGE);
    Halo halo = STYLE_FACTORY.halo(Color.PINK, 12);
    PointPlacement placement = STYLE_FACTORY.pointPlacement();
    Font font = STYLE_FACTORY.font();
    Expression label = FILTER_FACTORY.literal("the feature field name");
    return STYLE_FACTORY.textSymbolizer(name, geom, desc, uom, label, font, placement, halo, fill);
}

Example 3 with Halo

use of org.opengis.style.Halo in project geotoolkit by Geomatys.

the class XMLUtilitiesTest method createTextSymbolizer.

private static TextSymbolizer createTextSymbolizer() {
    String name = "Text symbolizer name";
    Description desc = STYLE_FACTORY.description("Text symbolizer title", "Text symbolizer description");
    Unit uom = Units.FOOT;
    String geom = "geom";
    Fill fill = STYLE_FACTORY.fill(Color.ORANGE);
    Halo halo = STYLE_FACTORY.halo(Color.PINK, 12);
    PointPlacement placement = STYLE_FACTORY.pointPlacement();
    Font font = STYLE_FACTORY.font();
    Expression label = FILTER_FACTORY.literal("the feature field name");
    return STYLE_FACTORY.textSymbolizer(name, geom, desc, uom, label, font, placement, halo, fill);
}

Example 4 with Halo

use of org.opengis.style.Halo in project geotoolkit by Geomatys.

the class PrepareStyleVisitor method visit.

@Override
public Object visit(TextSymbolizer ts, Object o) {
    Fill fill = ts.getFill();
    Font font = ts.getFont();
    Halo halo = ts.getHalo();
    Expression label = ts.getLabel();
    LabelPlacement place = ts.getLabelPlacement();
    if (fill != null) {
        fill = (Fill) fill.accept(this, o);
    }
    if (font != null) {
        font = (Font) font.accept(this, o);
    }
    if (halo != null) {
        halo = (Halo) halo.accept(this, o);
    }
    if (label != null) {
        label = (Expression) visit(label);
    }
    if (place != null) {
        place = (LabelPlacement) place.accept(this, o);
    }
    // recreate symbolizer
    return SF.textSymbolizer(ts.getName(), visitGeometryExpression(ts, o), ts.getDescription(), ts.getUnitOfMeasure(), label, font, place, halo, fill);
}

Example 5 with Halo

use of org.opengis.style.Halo in project geotoolkit by Geomatys.

the class Styles method centeredText.

public static MutableStyle centeredText() {
    // general informations
    final String name = "mySymbol";
    final Description desc = DEFAULT_DESCRIPTION;
    // use the default geometry of the feature
    final String geometry = null;
    final Unit unit = Units.POINT;
    final Expression label = FF.property("CNTRY_NAME");
    final Font font = SF.font(FF.literal("Arial"), FONT_STYLE_ITALIC, FONT_WEIGHT_BOLD, FF.literal(14));
    final LabelPlacement placement = SF.pointPlacement();
    final Halo halo = SF.halo(Color.WHITE, 1);
    final Fill fill = SF.fill(Color.BLUE);
    final TextSymbolizer symbol = SF.textSymbolizer(name, geometry, desc, unit, label, font, placement, halo, fill);
    final MutableStyle style = SF.style(DEFAULT_POLYGON_SYMBOLIZER, symbol);
    return style;
}