@Override
public void write(Object value, OutputStream output, Operation operation) throws IOException,
ServiceException {
Assert.isInstanceOf(PDFMap.class, value);
WMSMapContext mapContext = ((PDFMap) value).getContext();
final int width = mapContext.getMapWidth();
final int height = mapContext.getMapHeight();
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("setting up " + width + "x" + height + " image");
}
try {
// step 1: creation of a document-object
// width of document-object is width*72 inches
// height of document-object is height*72 inches
com.lowagie.text.Rectangle pageSize = new com.lowagie.text.Rectangle(width, height);
Document document = new Document(pageSize);
document.setMargins(0, 0, 0, 0);
// step 2: creation of the writer
PdfWriter writer = PdfWriter.getInstance(document, output);
// step 3: we open the document
document.open();
// step 4: we grab the ContentByte and do some stuff with it
// we create a fontMapper and read all the fonts in the font
// directory
DefaultFontMapper mapper = new DefaultFontMapper();
FontFactory.registerDirectories();
// we create a template and a Graphics2D object that corresponds
// with it
PdfContentByte cb = writer.getDirectContent();
PdfTemplate tp = cb.createTemplate(width, height);
PdfGraphics2D graphic = (PdfGraphics2D) tp.createGraphics(width, height, mapper);
// we set graphics options
if (!mapContext.isTransparent()) {
graphic.setColor(mapContext.getBgColor());
graphic.fillRect(0, 0, width, height);
} else {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("setting to transparent");
}
int type = AlphaComposite.SRC;
graphic.setComposite(AlphaComposite.getInstance(type));
Color c = new Color(mapContext.getBgColor().getRed(), mapContext.getBgColor()
.getGreen(), mapContext.getBgColor().getBlue(), 0);
graphic.setBackground(mapContext.getBgColor());
graphic.setColor(c);
graphic.fillRect(0, 0, width, height);
type = AlphaComposite.SRC_OVER;
graphic.setComposite(AlphaComposite.getInstance(type));
}
Rectangle paintArea = new Rectangle(width, height);
StreamingRenderer renderer = new StreamingRenderer();
renderer.setContext(mapContext);
// TODO: expose the generalization distance as a param
// ((StreamingRenderer) renderer).setGeneralizationDistance(0);
RenderingHints hints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
renderer.setJava2DHints(hints);
// we already do everything that the optimized data loading does...
// if we set it to true then it does it all twice...
java.util.Map rendererParams = new HashMap();
rendererParams.put("optimizedDataLoadingEnabled", new Boolean(true));
rendererParams.put("renderingBuffer", new Integer(mapContext.getBuffer()));
// we need the renderer to draw everything on the batik provided graphics object
rendererParams.put(StreamingRenderer.OPTIMIZE_FTS_RENDERING_KEY, Boolean.FALSE);
// render everything in vector form if possible
rendererParams.put(StreamingRenderer.VECTOR_RENDERING_KEY, Boolean.TRUE);
if (DefaultWebMapService.isLineWidthOptimizationEnabled()) {
rendererParams.put(StreamingRenderer.LINE_WIDTH_OPTIMIZATION_KEY, true);
}
renderer.setRendererHints(rendererParams);
Envelope dataArea = mapContext.getAreaOfInterest();
// enforce no more than x rendering errors
int maxErrors = wms.getMaxRenderingErrors();
MaxErrorEnforcer errorChecker = new MaxErrorEnforcer(renderer, maxErrors);
// Add a render listener that ignores well known rendering exceptions and reports back
// non
// ignorable ones
final RenderExceptionStrategy nonIgnorableExceptionListener;
nonIgnorableExceptionListener = new RenderExceptionStrategy(renderer);
renderer.addRenderListener(nonIgnorableExceptionListener);
// enforce max memory usage
int maxMemory = wms.getMaxRequestMemory() * KB;
PDFMaxSizeEnforcer memoryChecker = new PDFMaxSizeEnforcer(renderer, graphic, maxMemory);
// render the map
renderer.paint(graphic, paintArea, mapContext.getRenderingArea(),
mapContext.getRenderingTransform());
// render the watermark
MapDecorationLayout.Block watermark = RenderedImageMapOutputFormat.getWatermark(wms
.getServiceInfo());