Examples with PointLabelDescriptor org.geotoolkit.display2d.style.labeling.PointLabelDescriptor used on opensource projects

Example 1 with PointLabelDescriptor

use of org.geotoolkit.display2d.style.labeling.PointLabelDescriptor in project geotoolkit by Geomatys.

the class PointLabelCandidateRenderer method render.

@Override
public void render(final Candidate candidate) {
    if (!(candidate instanceof PointCandidate))
        return;
    final PointCandidate pointCandidate = (PointCandidate) candidate;
    final PointLabelDescriptor label = pointCandidate.getDescriptor();
    final double rotation = Math.toRadians(label.getRotation());
    context.switchToDisplayCRS();
    // rotation--------------------------------------------------------------
    if (rotation != 0) {
        g2.rotate(rotation, pointCandidate.getCorrectedX(), pointCandidate.getCorrectedY());
    }
    final String text = label.getText();
    final Font font = label.getTextFont();
    g2.setFont(font);
    // paint halo------------------------------------------------------------
    final float haloWidth = label.getHaloWidth();
    if (haloWidth > 0) {
        final float haloWidth2 = haloWidth + haloWidth;
        final GlyphVector glyphVector = font.createGlyphVector(g2.getFontRenderContext(), text);
        final Rectangle2D bounds = glyphVector.getVisualBounds();
        Shape shape = new RoundRectangle2D.Double(bounds.getMinX() + pointCandidate.getCorrectedX() - haloWidth, bounds.getMinY() + pointCandidate.getCorrectedY() - haloWidth, bounds.getWidth() + haloWidth2, bounds.getHeight() + haloWidth2, 2 + haloWidth2, 2 + haloWidth2);
        g2.setPaint(label.getHaloPaint());
        g2.fill(shape);
    }
    // paint text------------------------------------------------------------
    g2.setPaint(label.getTextPaint());
    g2.drawString(text, pointCandidate.getCorrectedX(), pointCandidate.getCorrectedY());
    // reset rotation
    if (rotation != 0) {
        g2.rotate(-rotation, pointCandidate.getCorrectedX(), pointCandidate.getCorrectedY());
    }
}

Example 2 with PointLabelDescriptor

use of org.geotoolkit.display2d.style.labeling.PointLabelDescriptor in project geotoolkit by Geomatys.

the class DisplacementLabelRenderer method portrayLabels.

/**
 * {@inheritDoc }
 */
@Override
public boolean portrayLabels() {
    final Graphics2D g2 = context.getGraphics();
    // enable antialiasing for labels
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    List<Candidate> candidates = new ArrayList<Candidate>();
    // generate all the candidates
    // priority is in the order of the layers provided.
    int priority = layers.size();
    for (final LabelLayer layer : layers) {
        for (LabelDescriptor label : layer.labels()) {
            Candidate[] cs = null;
            if (label instanceof PointLabelDescriptor) {
                cs = pointRenderer.generateCandidat((PointLabelDescriptor) label);
            } else if (label instanceof LinearLabelDescriptor) {
                cs = LinearRenderer.generateCandidat((LinearLabelDescriptor) label);
            } else {
                cs = null;
            }
            if (cs != null) {
                for (Candidate c : cs) {
                    c.setPriority(priority);
                    candidates.add(c);
                }
            }
        }
        priority--;
    }
    // displace or remove the candidates
    candidates = optimize(candidates);
    // paint the remaining candidates
    for (Candidate candidate : candidates) {
        if (candidate instanceof PointCandidate) {
            pointRenderer.render(candidate);
        } else if (candidate instanceof LinearCandidate) {
            LinearRenderer.render(candidate);
        }
    }
    layers.clear();
    return !candidates.isEmpty();
}