/// <summary>
/// Creates a HTML fragment from a part of a document.
/// </summary>
/// <param name="document">The document to create HTML from.</param>
/// <param name="highlighter">The highlighter used to highlight the document.</param>
/// <param name="segment">The part of the document to create HTML for. You can pass null to create HTML for the whole document.</param>
/// <param name="options">The options for the HTML creation.</param>
/// <returns>HTML code for the document part.</returns>
public static string CreateHtmlFragment(TextDocument document, DocumentHighlighter highlighter, ISegment segment, HtmlOptions options)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
if (segment == null)
{
segment = new SimpleSegment(0, document.TextLength);
}
StringBuilder html = new StringBuilder();
int segmentEndOffset = segment.EndOffset;
DocumentLine line = document.GetLineByOffset(segment.Offset);
while (line != null && line.Offset < segmentEndOffset)
{
HighlightedLine highlightedLine;
if (highlighter != null)
{
highlightedLine = highlighter.HighlightLine(line);
}
else
{
highlightedLine = new HighlightedLine(line);
}
SimpleSegment s = segment.GetOverlap(line);
if (html.Length > 0)
{
html.AppendLine("<br>");
}
html.Append(highlightedLine.ToHtml(s.Offset, s.EndOffset, options));
line = line.NextLine;
}
return(html.ToString());
}
public Run[] GetInlines(int lineIndex)
{
if (_encoding == null)
{
return(new Run[0]); //TODO: Refactor whole viewfilelister, syntax, preview
}
var docLine = _textDocument.GetLineByNumber(lineIndex);
var text = _textDocument.GetText(docLine.Offset, docLine.Length);
if (_highlighter != null)
{
var hLine = _highlighter.HighlightLine(lineIndex);
return(hLine.ToRichText().CreateRuns());
}
var run = new Run(text)
{
Foreground = _currentForeground
};
return(new[] { run });
}
// See: http://stackoverflow.com/questions/21558386/avalonedit-getting-syntax-highlighted-text
public void ApplyHighlighter(string code)
{
Inlines.Clear();
if (string.IsNullOrEmpty(code))
{
return;
}
var item = this;
var document = new TextDocument(code);
var highlighter = new DocumentHighlighter(document, SyntaxHighlighting);
var lineCount = document.LineCount;
for (var lineNumber = 1; lineNumber <= document.LineCount; lineNumber++)
{
var line = highlighter.HighlightLine(lineNumber);
var lineText = document.GetText(line.DocumentLine);
var offset = line.DocumentLine.Offset;
var sectionCount = line.Sections.Count;
for (var sectionNumber = 0; sectionNumber < sectionCount; sectionNumber++)
{
var section = line.Sections[sectionNumber];
//Deal with previous text
if (section.Offset > offset)
{
item.Inlines.Add(new Run(document.GetText(offset, section.Offset - offset)));
}
var runItem = new Run(document.GetText(section));
if (runItem.Foreground != null)
{
runItem.Foreground = section.Color.Foreground.GetBrush(null);
}
if (section.Color.FontWeight != null)
{
runItem.FontWeight = section.Color.FontWeight.Value;
}
item.Inlines.Add(runItem);
offset = section.Offset + section.Length;
}
//Deal with stuff at end of line
var lineEnd = line.DocumentLine.Offset + lineText.Length;
if (lineEnd > offset)
{
item.Inlines.Add(new Run(document.GetText(offset, lineEnd - offset)));
}
//If not last line add a new line
if (lineNumber < lineCount)
{
item.Inlines.Add(new Run("\n"));
}
}
}
