public VisualLineElement(VisualLine visualLine, int offset, int length )
: base(visualLine)
{
MouseInputEnabled = true;
TextRunProperties = visualLine.TextLayer.GlobalTextRunProperties;
Offset = offset;
Length = length;
UpdateText();
}
/// <summary>
/// <see cref="IVisualLineTransformer.Transform"/> implementation.
/// Sets <see cref="CurrentElements"/> and calls <see cref="Colorize"/>.
/// </summary>
public void Transform(VisualLine line, IList<VisualLineElement> elements)
{
if (elements == null)
throw new ArgumentNullException("elements");
if (this.CurrentElements != null)
throw new InvalidOperationException("Recursive Transform() call");
this.CurrentElements = elements;
try {
Colorize(line);
} finally {
this.CurrentElements = null;
}
}
/// <inheritdoc/>
protected override void Colorize(VisualLine line)
{
IHighlighter highlighter = line.TextLayer.Services.GetService(typeof(IHighlighter)) as IHighlighter;
if (highlighter != null) {
lineNumberBeingColorized = line.DocumentLine.LineNumber;
HighlightedLine hl = highlighter.HighlightLine(lineNumberBeingColorized);
lineNumberBeingColorized = 0;
foreach (HighlightedSection section in hl.Sections) {
if (IsEmptyColor(section.Color))
continue;
ChangeVisualElements(section.Offset, section.Offset + section.Length,
visualLineElement => ApplyColorToElement(visualLineElement, section.Color));
}
}
}
public void RebuildDocument()
{
lines.Clear();
DeleteAllChildren();
foreach (var docLine in Document.Lines)
{
var line = new VisualLine(this, docLine);
lines.Add(docLine,line);
}
}
public void LineInserted(DocumentLine insertionPos, DocumentLine newDocLine)
{
var prevLine = lines[insertionPos];
var line = new VisualLine(this, newDocLine);
line.BringNextToControl(prevLine,true);
lines.Add(newDocLine,line);
}
public VisualLine InitVisualLine(VisualLine visualLine)
{
Debug.WriteLine("Initializing line " + visualLine.DocumentLine.LineNumber);
visualLine.ConstructVisualElements(elementGenerators.ToArray());
visualLine.RunTransformers(visualLine, lineTransformers.ToArray());
return visualLine;
}
/// <summary>
/// Initializes the generator for the <see cref="ITextRunConstructionContext"/>
/// </summary>
public virtual void StartGeneration(VisualLine line)
{
}
internal void RunTransformers(VisualLine line, IVisualLineTransformer[] transformers)
{
Debug.Assert(phase == LifetimePhase.Transforming);
foreach (IVisualLineTransformer transformer in transformers) {
transformer.Transform(line, elements);
}
phase = LifetimePhase.Live;
}
/// <summary> /// Performs the colorization. /// </summary> protected abstract void Colorize(VisualLine line);