internal void ConstructVisualElements(ITextRunConstructionContext context, VisualLineElementGenerator[] generators)
{
//TODO: VisualLine.ConstructVisualElements()
throw new NotImplementedException();
}
VisualLine BuildVisualLine(DocumentLine documentLine, TextRunProperties textRunProperties,
TextParagraphProperties paragraphProperties, VisualLineElementGenerator[] generators,
IVisualLineTransformer[] transformers, Size availableSize)
{
if (heightTree.GetIsCollapsed(documentLine)) {
throw new InvalidOperationException();
}
var visualLine = new VisualLine(documentLine);
var textSource = new VisualLineTextSource(visualLine) {
Document = this.Document,
GlobalTextRunProperties = textRunProperties,
TextView = this
};
visualLine.ConstructVisualElements(textSource, generators);
visualLine.RunTransformers(textSource, transformers);
int offset = 0;
TextLineBreak lineBreak = null;
var textLines = new List<TextLine>();
while (offset <= visualLine.VisualLength) {
TextLine tl = textFormatter.FormatLine(textSource, offset,
availableSize.Width, paragraphProperties, lineBreak);
textLines.Add(tl);
offset += tl.Length;
lineBreak = tl.GetTextLineBreak();
}
visualLine.SetTextLines(textLines);
heightTree.SetHeight(visualLine.FirstDocumentLine, visualLine.Height);
return visualLine;
}