public static List <TagCloudEntry> BuildTagCloud(WebLibraryDetail web_library_detail, PDFDocument pdf_document)
{
int MAX_PAGE_LIMIT = 20;
AITags ai_tags = pdf_document.LibraryRef.Xlibrary.AITagManager.AITags;
HashSet <string> autotags = ai_tags.GetTagsWithDocument(pdf_document.Fingerprint);
foreach (var tag in TagTools.ConvertTagBundleToTags(pdf_document.Tags))
{
autotags.Add(tag);
}
CountingDictionary <string> word_counts = new CountingDictionary <string>();
{
Logging.Info("+Counting the autotags");
int total_tags = 0;
for (int page = 1; page <= pdf_document.PageCount && page < MAX_PAGE_LIMIT; ++page)
{
string page_text = pdf_document.GetFullOCRText(page);
foreach (string autotag in autotags)
{
int word_count = StringTools.CountStringOccurence(page_text, autotag);
if (0 < word_count)
{
++total_tags;
word_counts.TallyOne(autotag);
}
}
}
Logging.Info("-Counting the autotags: total_occurences={0} unique_tags={1}", total_tags, word_counts.Count);
}
Logging.Info("+Building the ratios");
List <TagCloudEntry> entries = new List <TagCloudEntry>();
foreach (var pair in word_counts)
{
int document_count = ai_tags.GetTagCount(pair.Key) + 1;
// Limit the wordcount to cull the hyperfrequent words
int word_count = pair.Value;
TagCloudEntry entry = new TagCloudEntry();
entry.word = pair.Key;
entry.word_count = word_count;
entry.document_count = document_count;
entry.importance = word_count / (double)document_count;
entries.Add(entry);
}
Logging.Info("-Building the ratios");
entries.Sort(delegate(TagCloudEntry a, TagCloudEntry b) { return(-Sorting.Compare(a.importance, b.importance)); });
return(entries);
}
private void text_block_word_MouseUp(object sender, MouseButtonEventArgs e)
{
if (null != TagClick)
{
FeatureTrackingManager.Instance.UseFeature(Features.Document_TagCloud);
// If they are not holding down CTRL, clear down the already selected items
if (!KeyboardTools.IsCTRLDown())
{
foreach (var tag in entries)
{
tag.selected = false;
}
foreach (TextBlock text_block_word in TagPanel.Children)
{
text_block_word.FontWeight = FontWeights.Normal;
}
}
{
// Find the clicked tag
TextBlock text_block_word = (TextBlock)sender;
TagCloudEntry entry = (TagCloudEntry)text_block_word.Tag;
entry.selected = !entry.selected;
text_block_word.FontWeight = entry.selected ? FontWeights.Bold : FontWeights.Normal;
}
// Get all the selected tags
List <string> tags_selected = new List <string>();
{
if (null != entries)
{
foreach (var tag in entries)
{
if (tag.selected)
{
tags_selected.Add(tag.word);
}
}
}
}
TagClick(tags_selected);
}
}
