/**
* <code>FOTreeBuilder</code> constructor
*
* @param outputFormat the MIME type of the output format to use (ex. "application/pdf").
* @param foUserAgent the {@link FOUserAgent} in effect for this process
* @param stream the <code>OutputStream</code> to direct the results to
* @throws FOPException if the <code>FOTreeBuilder</code> cannot be properly created
*/
public FOTreeBuilder(String outputFormat, FOUserAgent foUserAgent, OutputStream stream)
throws FOPException {
this.userAgent = foUserAgent;
this.elementMappingRegistry = userAgent.getFactory().getElementMappingRegistry();
// This creates either an AreaTreeHandler and ultimately a Renderer, or
// one of the RTF-, MIF- etc. Handlers.
foEventHandler =
foUserAgent.getRendererFactory().createFOEventHandler(foUserAgent, outputFormat, stream);
builderContext = new FOTreeBuilderContext();
builderContext.setPropertyListMaker(
new PropertyListMaker() {
public PropertyList make(FObj fobj, PropertyList parentPropertyList) {
return new StaticPropertyList(fobj, parentPropertyList);
}
});
}
/** {@inheritDoc} */
public void activateLayout() {
initialize();
FOUserAgent userAgent = pageSeq.getUserAgent();
ImageManager imageManager = userAgent.getFactory().getImageManager();
String uri = getExternalDocument().getSrc();
Integer firstPageIndex = ImageUtil.getPageIndexFromURI(uri);
boolean hasPageIndex = (firstPageIndex != null);
try {
ImageInfo info = imageManager.getImageInfo(uri, userAgent.getImageSessionContext());
Object moreImages = info.getCustomObjects().get(ImageInfo.HAS_MORE_IMAGES);
boolean hasMoreImages = moreImages != null && !Boolean.FALSE.equals(moreImages);
Dimension intrinsicSize = info.getSize().getDimensionMpt();
ImageLayout layout = new ImageLayout(getExternalDocument(), this, intrinsicSize);
PageSequence pageSequence = new PageSequence(null);
transferExtensions(pageSequence);
areaTreeHandler.getAreaTreeModel().startPageSequence(pageSequence);
if (log.isDebugEnabled()) {
log.debug("Starting layout");
}
makePageForImage(info, layout);
if (!hasPageIndex && hasMoreImages) {
if (log.isTraceEnabled()) {
log.trace("Starting multi-page processing...");
}
URI originalURI;
try {
originalURI = new URI(URISpecification.escapeURI(uri));
int pageIndex = 1;
while (hasMoreImages) {
URI tempURI =
new URI(
originalURI.getScheme(),
originalURI.getSchemeSpecificPart(),
"page=" + Integer.toString(pageIndex + 1));
if (log.isTraceEnabled()) {
log.trace("Subimage: " + tempURI.toASCIIString());
}
ImageInfo subinfo =
imageManager.getImageInfo(
tempURI.toASCIIString(), userAgent.getImageSessionContext());
moreImages = subinfo.getCustomObjects().get(ImageInfo.HAS_MORE_IMAGES);
hasMoreImages = moreImages != null && !Boolean.FALSE.equals(moreImages);
intrinsicSize = subinfo.getSize().getDimensionMpt();
layout = new ImageLayout(getExternalDocument(), this, intrinsicSize);
makePageForImage(subinfo, layout);
pageIndex++;
}
} catch (URISyntaxException e) {
getResourceEventProducer().uriError(this, uri, e, getExternalDocument().getLocator());
return;
}
}
} catch (FileNotFoundException fnfe) {
getResourceEventProducer().imageNotFound(this, uri, fnfe, getExternalDocument().getLocator());
} catch (IOException ioe) {
getResourceEventProducer().imageIOError(this, uri, ioe, getExternalDocument().getLocator());
} catch (ImageException ie) {
getResourceEventProducer().imageError(this, uri, ie, getExternalDocument().getLocator());
}
}