@Override
public void sendContent(
OutputStream out, Range range, final Map<String, String> params, String rContentType)
throws IOException, BadRequestException {
final int width = params.containsKey("width") ? Integer.parseInt(params.get("width")) : 300;
final int height =
params.containsKey("height") ? Integer.parseInt(params.get("height")) : 300;
List<Job> jobs = new ArrayList();
final Map<ILayer, Image> images = new HashMap();
// run jobs for all layers
WorkbenchState state = WorkbenchState.instance(SessionContext.current());
final IMap map = state.getMap();
if (map != null) {
for (final ILayer layer : map.getLayers()) {
if (layer.isVisible()) {
UIJob job =
new UIJob(getClass().getSimpleName() + ": " + layer.getLabel()) {
protected void runWithException(IProgressMonitor monitor) throws Exception {
try {
IGeoResource res = layer.getGeoResource();
if (res == null) {
throw new RuntimeException(
"Unable to find geo resource of layer: " + layer);
}
IService service = res.service(null);
Pipeline pipeline =
pipelineIncubator.newPipeline(
LayerUseCase.IMAGE, layer.getMap(), layer, service);
if (pipeline.length() == 0) {
throw new RuntimeException(
"Unable to build processor pipeline for layer: " + layer);
}
// processor request
GetMapRequest request =
new GetMapRequest(
null, // layers
map.getCRSCode(),
map.getExtent(),
contentType,
width,
height,
-1);
// process request
pipeline.process(
request,
new ResponseHandler() {
public void handle(ProcessorResponse pipeResponse) throws Exception {
Image image = ((ImageResponse) pipeResponse).getImage();
images.put(layer, image);
}
});
} catch (Exception e) {
// XXX put a special image in the map
log.warn("", e);
images.put(layer, null);
throw e;
}
}
};
jobs.add(job);
job.schedule();
}
}
// join jobs
for (Job job : jobs) {
try {
job.join();
} catch (InterruptedException e) {
// XXX put a special image in the map
log.warn("", e);
}
}
}
// put images together (MapContext order)
Graphics2D g = null;
try {
// create image
BufferedImage result = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
g = result.createGraphics();
// 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));
g.setRenderingHints(hints);
if (map == null) {
g.setFont(new Font("Serif", Font.PLAIN, 14));
g.setColor(Color.RED);
g.drawString("Melden Sie sich in der Workbench an, um hier eine Karte zu sehen!", 50, 50);
}
// FIXME honor layer.getOrderKey()
for (Map.Entry<ILayer, Image> entry : images.entrySet()) {
int rule = AlphaComposite.SRC_OVER;
float alpha = ((float) entry.getKey().getOpacity()) / 100;
g.setComposite(AlphaComposite.getInstance(rule, alpha));
g.drawImage(entry.getValue(), 0, 0, null);
}
// encode image
encodeImage(result, out);
} finally {
if (g != null) {
g.dispose();
}
}
}
public void writeTo(final OutputStream out) throws ServiceException, IOException {
Timer timer = new Timer();
// single layer? -> request ENCODED_IMAGE
if (mapContext.getLayerCount() == 1) {
MapLayer mapLayer = mapContext.getLayers()[0];
ILayer layer = loader.findLayer(mapLayer);
try {
Pipeline pipeline = loader.getOrCreatePipeline(layer, LayerUseCase.ENCODED_IMAGE);
ProcessorRequest request = prepareProcessorRequest();
pipeline.process(
request,
new ResponseHandler() {
public void handle(ProcessorResponse pipeResponse) throws Exception {
HttpServletResponse response = GeoServerWms.response.get();
if (pipeResponse == EncodedImageResponse.NOT_MODIFIED) {
log.info("Response: 304!");
response.setStatus(304);
} else {
long lastModified = ((EncodedImageResponse) pipeResponse).getLastModified();
// allow caches and browser clients to cache for 1h
// response.setHeader( "Cache-Control", "public,max-age=3600" );
if (lastModified > 0) {
response.setHeader("Cache-Control", "no-cache,must-revalidate");
response.setDateHeader("Last-Modified", lastModified);
} else {
response.setHeader("Cache-Control", "no-cache,must-revalidate");
response.setDateHeader("Expires", 0);
}
byte[] chunk = ((EncodedImageResponse) pipeResponse).getChunk();
int len = ((EncodedImageResponse) pipeResponse).getChunkSize();
out.write(chunk, 0, len);
}
}
});
log.debug(" flushing response stream. (" + timer.elapsedTime() + "ms)");
out.flush();
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException(e);
}
}
// multiple layers -> render into one image
else {
List<Job> jobs = new ArrayList();
final Map<MapLayer, Image> images = new HashMap();
// run jobs for all layers
for (final MapLayer mapLayer : mapContext.getLayers()) {
final ILayer layer = loader.findLayer(mapLayer);
// job
UIJob job =
new UIJob(getClass().getSimpleName() + ": " + layer.getLabel()) {
protected void runWithException(IProgressMonitor monitor) throws Exception {
try {
// XXX this excludes Cache304 (which supports EncodedImageResponse only)
Pipeline pipeline = loader.getOrCreatePipeline(layer, LayerUseCase.IMAGE);
GetMapRequest targetRequest = prepareProcessorRequest();
pipeline.process(
targetRequest,
new ResponseHandler() {
public void handle(ProcessorResponse pipeResponse) throws Exception {
Image layerImage = ((ImageResponse) pipeResponse).getImage();
images.put(mapLayer, layerImage);
}
});
} catch (Exception e) {
// XXX put a special image in the map
log.warn("", e);
images.put(mapLayer, null);
throw e;
}
}
};
job.schedule();
jobs.add(job);
}
// join jobs
for (Job job : jobs) {
try {
job.join();
} catch (InterruptedException e) {
// XXX put a special image in the map
log.warn("", e);
}
}
// put images together (MapContext order)
Graphics2D g = null;
try {
// result image
BufferedImage result =
ImageUtils.createImage(mapContext.getMapWidth(), mapContext.getMapHeight(), null, true);
g = result.createGraphics();
// 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));
g.setRenderingHints(hints);
for (MapLayer mapLayer : mapContext.getLayers()) {
Image layerImage = images.get(mapLayer);
// load image data
// new javax.swing.ImageIcon( image ).getImage();
ILayer layer = loader.findLayer(mapLayer);
int rule = AlphaComposite.SRC_OVER;
float alpha = ((float) layer.getOpacity()) / 100;
g.setComposite(AlphaComposite.getInstance(rule, alpha));
g.drawImage(layerImage, 0, 0, null);
}
encodeImage(result, out);
} finally {
if (g != null) {
g.dispose();
}
}
}
}
