public static void TestPDFRendererControl()
{
Library library = Library.GuestInstance;
List <PDFDocument> pdf_documents = library.PDFDocuments;
if (0 < pdf_documents.Count)
{
PDFDocument pdf_document = pdf_documents[0];
PDFRenderer pdf_renderer = new PDFRenderer(pdf_document.DocumentPath, null, null);
PDFAnnotationList pdf_annotation_list = pdf_document.Annotations;
PDFRendererControl control = new PDFRendererControl(pdf_document, true);
ControlHostingWindow window = new ControlHostingWindow("PDFRenderer", control);
window.Show();
}
}
internal static void ReadFromDisk(PDFDocument pdf_document, PDFAnnotationList annotations, Dictionary <string, byte[]> library_items_annotations_cache)
{
byte[] annotations_data = null;
// Try the cache
if (null != library_items_annotations_cache)
{
library_items_annotations_cache.TryGetValue(pdf_document.Fingerprint, out annotations_data);
}
else // Try to load the annotations from file if they exist
{
var items = pdf_document.Library.LibraryDB.GetLibraryItems(pdf_document.Fingerprint, PDFDocumentFileLocations.ANNOTATIONS);
if (0 < items.Count)
{
annotations_data = items[0].data;
}
}
// If we actually have some annotations, load them
if (null != annotations_data)
{
List <DictionaryBasedObject> annotation_dictionaries = null;
try
{
annotation_dictionaries = ReadFromStream_JSON(annotations_data);
}
catch (Exception)
{
annotation_dictionaries = ReadFromStream_BINARY(annotations_data);
}
if (null != annotation_dictionaries)
{
foreach (DictionaryBasedObject annotation_dictionary in annotation_dictionaries)
{
PDFAnnotation pdf_annotation = new PDFAnnotation(annotation_dictionary, false);
annotations.AddUpdatedAnnotation(pdf_annotation);
}
}
}
}
internal static Dictionary <string, PDFAnnotationList> BulkReadFromDisk(WebLibraryDetail web_library_detail)
{
WPFDoEvents.AssertThisCodeIs_NOT_RunningInTheUIThread();
// Every document which has any annotations, may have many. So its one fingerprint, many annotation records.
// We do not (yet) bother about potential fringe cases where annotations end up in a corrupted database in duplicate:
// we KNOW that PDFAnnotationList code can manage that as it does compare incoming annotations
// to already existing ones (used by the GUI annotation editor, of course :-) )
// Hence we choose a PDFAnnotationList for the annotations.
Dictionary <string, PDFAnnotationList> rv = new Dictionary <string, PDFAnnotationList>();
// Try to load the annotations from file if they exist
Dictionary <string, byte[]> library_items_annotations_cache = web_library_detail.Xlibrary.LibraryDB.GetLibraryItemsAsCache(PDFDocumentFileLocations.ANNOTATIONS);
foreach (var item in library_items_annotations_cache)
{
string fingerprint = item.Key;
byte[] annotations_data = item.Value;
List <DictionaryBasedObject> annotation_dictionaries;
try
{
annotation_dictionaries = ReadFromStream_JSON(annotations_data);
}
catch (Exception)
{
annotation_dictionaries = ReadFromStream_BINARY(annotations_data);
}
if (null != annotation_dictionaries)
{
foreach (DictionaryBasedObject annotation_dictionary in annotation_dictionaries)
{
PDFAnnotation pdf_annotation = new PDFAnnotation(annotation_dictionary, false);
if (pdf_annotation.DocumentFingerprint != fingerprint)
{
Logging.Error($"Corrupted ANNOTATIONS record in database? Fingerprints do not match: key: '{fingerprint}' record-ref: '{pdf_annotation.DocumentFingerprint}'");
// We DO NOT know which one of those fingerprints is TRUE. We DO NOT want to loose the data, so we assign to BOTH.
// This happens when we first clone the annotation and modify that fingerprint to store the SECOND record,
// after which we follow the regular code path further below to store the FIRST (= ORIGINAL) record.
PDFAnnotationList lst = null;
_ = rv.TryGetValue(fingerprint, out lst);
if (lst == null)
{
lst = new PDFAnnotationList();
rv.Add(fingerprint, lst);
}
var dupdict = (DictionaryBasedObject)annotation_dictionary.Clone();
// HACK: override the fingerprint in the decoded record: this duplicates code from `PDFAnnotation.DocumentFingerprint`
dupdict["DocumentFingerprint"] = fingerprint;
PDFAnnotation dup = new PDFAnnotation(annotation_dictionary, true);
lst.__AddUpdatedAnnotation(dup);
}
{
PDFAnnotationList lst = null;
_ = rv.TryGetValue(pdf_annotation.DocumentFingerprint, out lst);
if (lst == null)
{
lst = new PDFAnnotationList();
rv.Add(pdf_annotation.DocumentFingerprint, lst);
}
lst.__AddUpdatedAnnotation(pdf_annotation);
}
}
}
}
return(rv);
}
