Hi Sergey, The problem is that the RenderingExecutor helper class used by JMapPane is drawing into a BufferedImage (the backing image of the map pane) and then this gets blitted to the screen, overwriting your custom drawing.
One solution would be for your listener to create a separate image with a transparent background and draw into that. The override onRenderingCompleted to blit that onto the screen after the pane's normal backing image has been displayed. I know that sounds like a bit clumsy - perhaps someone else here might have a better suggestion ? Michael On 27 September 2010 20:26, LSA <[email protected]> wrote: > Hi, Michael, > > I tried the following code to draw rectangle around each feature: > > mapPane.getRenderer().addRenderListener(new RenderListener() { > > @Override > public void featureRenderer(SimpleFeature feature) { > AffineTransform transform = > RendererUtilities.worldToScreenTransform( > mapPane.getMapContext().getAreaOfInterest(), > mapPane.getVisibleRect()); > > Graphics2D g = ((Graphics2D) mapPane.getGraphics()); > > if > (!org.apache.commons.lang.ArrayUtils.isEmpty(((Geometry)feature.getDefaultGeometry()).getBoundary().getCoordinates())){ > Coordinate c = > ((Geometry)feature.getDefaultGeometry()).getBoundary().getCoordinates()[0]; > Point2D point = new Point2D.Double(c.x, c.y); > Point2D result = new Point2D.Double(); > transform.transform(point, result); > > g.setColor(Color.BLUE); > g.drawRect((int)result.getX(), (int)result.getY(), 20, 20); > } > > > //UiGisUtils.highlightFeatureOnMap(ShapeFileRendererComposite.this, > feature, Color.YELLOW, 11); > } > > @Override > public void errorOccurred(Exception arg0) { > } > }); > > Rectangles appear around some features for a moment only to dissapear > after it... > > What am I doing wrong? > > Sergey > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
