Examples with RenderListener org.geotools.renderer.RenderListener used on opensource projects

Example 1 with RenderListener

use of org.geotools.renderer.RenderListener in project sldeditor by robward-scisys.

the class RendererErrorsTest method testRendererErrors.

/**
 * Test method for {@link com.sldeditor.render.RendererErrors#RendererErrors(boolean)}.
 */
@Test
public void testRendererErrors() {
    RenderListener instance1 = RendererErrors.getInstance();
    RenderListener instance2 = RendererErrors.getInstance();
    String exceptionMessage1 = "test exception";
    Exception e = new FileNotFoundException(exceptionMessage1);
    instance1.errorOccurred(null);
    instance1.errorOccurred(e);
    instance2.errorOccurred(e);
    instance1.featureRenderer(null);
    instance2.featureRenderer(null);
}

Example 2 with RenderListener

use of org.geotools.renderer.RenderListener in project polymap4-core by Polymap4.

the class FeatureRenderProcessor2 method getMapRequest.

@Override
public void getMapRequest(GetMapRequest request, ProcessorContext context) throws Exception {
    long start = System.currentTimeMillis();
    // result
    BufferedImage result = new BufferedImage(request.getWidth(), request.getHeight(), TYPE_4BYTE_ABGR);
    result.setAccelerationPriority(1);
    final Graphics2D g = result.createGraphics();
    // log.info( "IMAGE: accelerated=" + result.getCapabilities( g.getDeviceConfiguration() ).isAccelerated() );
    MapContent mapContent = new MapContent();
    try {
        // MapContent
        mapContent.getViewport().setCoordinateReferenceSystem(request.getBoundingBox().getCoordinateReferenceSystem());
        mapContent.addLayer(new FeatureLayer(fs.get(), style.get()));
        StreamingRenderer renderer = new NoThreadStreamingRenderer();
        // error handler
        renderer.addRenderListener(new RenderListener() {

            @Override
            public void featureRenderer(SimpleFeature feature) {
            }

            @Override
            public void errorOccurred(Exception e) {
                if (e.getMessage() == null || e.getMessage().contains("Error transforming bbox") || e.getMessage().contains("too close to a pole")) {
                    log.warn("Renderer: " + e.getMessage());
                } else {
                    log.error("Renderer error: ", e);
                    drawErrorMsg(g, "Unable to render.", e);
                }
            }
        });
        // rendering hints
        RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        hints.add(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
        hints.add(new RenderingHints(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON));
        hints.add(new RenderingHints(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON));
        // hints.add( new RenderingHints(
        // RenderingHints.KEY_TEXT_ANTIALIASING,
        // RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB ) );
        // geoserver compatibility to support *env* in SLD functions
        double scale = RendererUtilities.calculateOGCScale(request.getBoundingBox(), request.getWidth(), Collections.EMPTY_MAP);
        EnvFunction.setLocalValue("wms_scale_denominator", scale);
        renderer.setJava2DHints(hints);
        g.setRenderingHints(hints);
        // render params
        Map rendererParams = new HashMap();
        rendererParams.put("optimizedDataLoadingEnabled", Boolean.TRUE);
        renderer.setRendererHints(rendererParams);
        renderer.setMapContent(mapContent);
        Rectangle paintArea = new Rectangle(request.getWidth(), request.getHeight());
        renderer.paint(g, paintArea, request.getBoundingBox());
    } catch (Throwable e) {
        log.error("Renderer error: ", e);
        drawErrorMsg(g, "Unable to render.", e);
    } finally {
        mapContent.dispose();
        EnvFunction.clearLocalValues();
        if (g != null) {
            g.dispose();
        }
    }
    log.debug("   ...done: (" + (System.currentTimeMillis() - start) + "ms).");
    context.sendResponse(new ImageResponse(result));
}

Example 3 with RenderListener

use of org.geotools.renderer.RenderListener in project polymap4-core by Polymap4.

the class RasterRenderProcessor method getMapRequest.

@Override
public void getMapRequest(GetMapRequest request, ProcessorContext context) throws Exception {
    // result
    BufferedImage result = new BufferedImage(request.getWidth(), request.getHeight(), TYPE_4BYTE_ABGR);
    final Graphics2D g = result.createGraphics();
    MapContent mapContent = new MapContent();
    try {
        mapContent.getViewport().setCoordinateReferenceSystem(request.getBoundingBox().getCoordinateReferenceSystem());
        mapContent.addLayer(new GridReaderLayer(reader, style.get()));
        // renderer
        StreamingRenderer renderer = new StreamingRenderer();
        // error handler
        renderer.addRenderListener(new RenderListener() {

            public void featureRenderer(SimpleFeature feature) {
            }

            public void errorOccurred(Exception e) {
                log.error("Renderer error: ", e);
                drawErrorMsg(g, "Fehler bei der Darstellung.", e);
            }
        });
        // rendering hints
        RenderingHints hints = new RenderingHints(KEY_RENDERING, VALUE_RENDER_QUALITY);
        hints.add(new RenderingHints(KEY_ANTIALIASING, VALUE_ANTIALIAS_ON));
        hints.add(new RenderingHints(KEY_TEXT_ANTIALIASING, VALUE_TEXT_ANTIALIAS_ON));
        renderer.setJava2DHints(hints);
        // render params
        Map rendererParams = new HashMap();
        rendererParams.put("optimizedDataLoadingEnabled", Boolean.TRUE);
        renderer.setRendererHints(rendererParams);
        renderer.setMapContent(mapContent);
        Rectangle paintArea = new Rectangle(request.getWidth(), request.getHeight());
        renderer.paint(g, paintArea, request.getBoundingBox());
    } catch (Throwable e) {
        log.error("Renderer error: ", e);
        drawErrorMsg(g, null, e);
    } finally {
        mapContent.dispose();
        EnvFunction.clearLocalValues();
        if (g != null) {
            g.dispose();
        }
    }
    context.sendResponse(new ImageResponse(result));
}