Hello Salke,
I think your "strange" behavior comes from:
gc.show();
This (test method) opens a frame and shows the grid.
Comment this line out to avoid this.
To show your grid in "your own" JMapPane/MapContext it is additionally
necessary to invoke
JMapPane.setReset(true);
JMapPane.repaint();
after adding a new layer to the MapContext.
@Geotools-Developers:
Maybe it is time to provide the JavaDoc for JMapPane, where also the
setReset(.) issue is mentioned. There often are the same questions on
this list...
Kind regards
Martin Schmitz
Salke schrieb:
> Hi,
>
> I started using geotools today, so I am pretty new to this impressive
> library. I am using a JMapPane to display raster data I got from a WMS
> (geoserver). The layer is displayed properly, BUT: As soon as I create the
> JMapPane-object, it's opening its own frame displaying the loaded layer
> inside. 0o Looking at the documentation I found out that JMapPane is a
> subclass of a "normal" JPanel, how can it open it's own frame? :X
>
> I want the JMapPane to be displayed inside my mainframe, which is a normal
> JFrame.
>
> Another question: How can I use the controls for Zooming and Panning I read
> about in some posts and parts of the documentation) At the moment, it looks
> like a static image beeing simply displayed. Some source is following, maybe
> it helps to find a way out of the magic frame-creation :)
>
> URL myURL = new
> URL("http://localhost:8080/geoserver/wms";);
> WebMapServer wms = new WebMapServer(myURL);
> GetMapRequest mapRequest = wms.createGetMapRequest();
> mapRequest.addLayer(currentLayer);
> mapRequest.setFormat("image/png");
> mapRequest.setDimensions(600, 600);
> mapRequest.setBBox(currentLayer.getLatLonBoundingBox());
>
> BufferedImage image =
> ImageIO.read(wms.issueRequest(mapRequest).getInputStream());
> GeneralEnvelope envelope = new
> GeneralEnvelope(currentLayer.getLatLonBoundingBox());
>
> GridCoverageFactory factory = new
> GridCoverageFactory();
> GridCoverage2D gc = factory.create("GridCoverage",
> image, envelope);
> gc.show();
>
> MapContext mc = new DefaultMapContext();
> StyleBuilder sb = new StyleBuilder();
> org.geotools.styling.Style style =
> sb.createStyle(sb.createRasterSymbolizer());
>
> StreamingRenderer renderer = new StreamingRenderer();
>
> HashMap hints = new HashMap();
> hints.put("memoryPreloadingEnabled", Boolean.TRUE);
> renderer.setRendererHints(hints);
>
> mc.addLayer(gc, style);
> JMapPane mp = new JMapPane(null, true, renderer, mc);
>
> // this points to this class that is a subclass of
> JFrame
> // the JMapPane is even "displayed" (own frame) without
> this line 0o
> this.getContentPane().add(mp);
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