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Free text annotation graphics

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Jakub Melka
2020-04-05 12:34:29 +02:00
parent 5dd9888906
commit a3ce271349
6 changed files with 621 additions and 19 deletions
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119
PdfForQtLib/sources/pdfdocumentbuilder.cpp
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@ -899,12 +899,33 @@ void PDFDocumentBuilder::updateDocumentInfo(PDFObject info)
std::vector<PDFObject> PDFDocumentBuilder::copyFrom(const std::vector<PDFObject>& objects, const PDFObjectStorage& storage, bool createReferences)
{
// 1) Collect all references, which we must copy
// 1) Collect all references, which we must copy. If object is referenced, then
// we must also collect references of referenced object.
std::set<PDFObjectReference> references;
PDFCollectReferencesVisitor collectReferencesVisitor(references);
for (const PDFObject& object : objects)
{
object.accept(&collectReferencesVisitor);
PDFCollectReferencesVisitor collectReferencesVisitor(references);
for (const PDFObject& object : objects)
{
object.accept(&collectReferencesVisitor);
}
}
// Iterative algorihm, which adds additional references from referenced objects.
// If new reference is added, then we must also check, that all referenced objects
// from this object are added.
std::set<PDFObjectReference> workSet = references;
while (!workSet.empty())
{
std::set<PDFObjectReference> addedReferences;
PDFCollectReferencesVisitor collectReferencesVisitor(addedReferences);
for (const PDFObjectReference& objectReference : workSet)
{
storage.getObject(objectReference).accept(&collectReferencesVisitor);
}
workSet.clear();
std::set_difference(addedReferences.cbegin(), addedReferences.cend(), references.cbegin(), references.cend(), std::inserter(workSet, workSet.cend()));
references.merge(addedReferences);
}
// 2) Make room for new objects, together with mapping
@ -1264,10 +1285,92 @@ PDFObjectReference PDFDocumentBuilder::createAnnotationFreeText(PDFObjectReferen
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("CL");
objectBuilder.beginArray();
objectBuilder << startPoint.x();
objectBuilder << startPoint.y();
objectBuilder << endPoint.x();
objectBuilder << endPoint.y();
objectBuilder << startPoint;
objectBuilder << endPoint;
objectBuilder.endArray();
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("LE");
objectBuilder.beginArray();
objectBuilder << startLineType;
objectBuilder << endLineType;
objectBuilder.endArray();
objectBuilder.endDictionaryItem();
objectBuilder.endDictionary();
PDFObjectReference annotationObject = addObject(objectBuilder.takeObject());
objectBuilder.beginDictionary();
objectBuilder.beginDictionaryItem("Annots");
objectBuilder.beginArray();
objectBuilder << annotationObject;
objectBuilder.endArray();
objectBuilder.endDictionaryItem();
objectBuilder.endDictionary();
PDFObject pageAnnots = objectBuilder.takeObject();
appendTo(page, pageAnnots);
updateAnnotationAppearanceStreams(annotationObject);
return annotationObject;
}
PDFObjectReference PDFDocumentBuilder::createAnnotationFreeText(PDFObjectReference page,
QRectF boundingRectangle,
QRectF textRectangle,
QString title,
QString subject,
QString contents,
TextAlignment textAlignment,
QPointF startPoint,
QPointF kneePoint,
QPointF endPoint,
AnnotationLineEnding startLineType,
AnnotationLineEnding endLineType)
{
PDFObjectFactory objectBuilder;
objectBuilder.beginDictionary();
objectBuilder.beginDictionaryItem("Type");
objectBuilder << WrapName("Annot");
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("Subtype");
objectBuilder << WrapName("FreeText");
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("Rect");
objectBuilder << boundingRectangle;
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("F");
objectBuilder << 4;
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("P");
objectBuilder << page;
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("M");
objectBuilder << WrapCurrentDateTime();
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("CreationDate");
objectBuilder << WrapCurrentDateTime();
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("T");
objectBuilder << title;
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("Contents");
objectBuilder << contents;
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("Subj");
objectBuilder << subject;
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("Q");
objectBuilder << WrapFreeTextAlignment(textAlignment);
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("DA");
objectBuilder << WrapString("/Arial 10 Tf");
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("RD");
objectBuilder << getAnnotationReductionRectangle(boundingRectangle, textRectangle);
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("CL");
objectBuilder.beginArray();
objectBuilder << startPoint;
objectBuilder << kneePoint;
objectBuilder << endPoint;
objectBuilder.endArray();
objectBuilder.endDictionaryItem();
objectBuilder.beginDictionaryItem("LE");