/**
* The destination page. ATTENTION: it is common have dangling destinations to invalid (null)
* pages around!
*
* @return The destination page. Be sure to handle null return values.
*/
public PDPage getPage(PDDocument doc) {
COSArray definition = cosGetArray();
COSObject page = definition.get(0);
if (page.asNumber() != null) {
int pageIndex = page.asNumber().intValue();
return doc.getPageTree().getPageAt(pageIndex);
}
if (page.asDictionary() != null) {
return (PDPage) PDPageNode.META.createFromCos(page.asDictionary());
}
return null;
}
protected void do_def(CSOperation operation) {
// define key / value association
Iterator it = operation.getOperands();
COSObject operand = COSNull.NULL;
if (it.hasNext()) {
operand = (COSObject) it.next();
}
COSDictionary dict = operand.asDictionary();
if (dict == null) {
COSName key = operand.asName();
if (key == null) {
return;
}
COSObject value = COSNull.NULL;
if (it.hasNext()) {
value = (COSObject) it.next();
}
addDefinition(key, value);
} else {
Iterator<Map.Entry<COSName, COSObject>> eit = dict.entryIterator();
while (eit.hasNext()) {
Map.Entry<COSName, COSObject> entry = eit.next();
COSName key = entry.getKey();
COSObject value = entry.getValue();
addDefinition(key, value);
}
}
}
/*
* (non-Javadoc)
*
* @see
* de.intarsys.pdf.cos.COSBasedObject.MetaClass#doDetermineClass(de.
* intarsys.pdf.cos.COSObject)
*/
@Override
protected COSBasedObject.MetaClass doDetermineClass(COSObject object) {
COSDictionary dict;
dict = object.asDictionary();
if (dict == null) {
throw new IllegalArgumentException("font object is not a COSDictionary as required");
}
COSName type = dict.get(DK_Type).asName();
if (type == null) {
throw new IllegalArgumentException("Dictionary has no type");
}
if (!type.equals(CN_Type_Font)) {
throw new IllegalArgumentException("type <" + type + "> is not a valid font type");
}
COSName subtype = dict.get(DK_Subtype).asName();
if (subtype == null) {
throw new IllegalArgumentException("font not identified by subtype");
}
if (subtype.equals(CN_Subtype_Type1)) {
return PDFontType1.META;
} else if (subtype.equals(CN_Subtype_TrueType)) {
if (dict.get(DK_FontDescriptor).isNull()) {
/*
* treat as if Type1 was specified, because that's probably
* what the creator meant; further processing would yield
* wrong results anyway as FontDescriptor is a required
* entry for TrueType fonts
*/
return PDFontType1.META;
}
return PDFontTrueType.META;
} else if (subtype.equals(CN_Subtype_MMType1)) {
return PDFontMMType1.META;
} else if (subtype.equals(CN_Subtype_Type0)) {
return PDFontType0.META;
} else if (subtype.equals(CN_Subtype_Type3)) {
return PDFontType3.META;
} else if (subtype.equals(CN_Subtype_CIDFontType0)) {
return CIDFontType0.META;
} else if (subtype.equals(CN_Subtype_CIDFontType2)) {
return CIDFontType2.META;
}
throw new IllegalArgumentException("font subtype <" + subtype + "> not supported");
}
