void OnSyntaxHighlightingChanged(IHighlightingDefinition newValue)
{
if (colorizer != null) {
this.TextArea.TextView.LineTransformers.Remove(colorizer);
colorizer = null;
}
if (newValue != null) {
colorizer = CreateColorizer(newValue);
this.TextArea.TextView.LineTransformers.Insert(0, colorizer);
}
}
/// <summary>
/// Method is executed when the syntax highlighting defined through dp has changed.
/// </summary>
/// <param name="newValue"></param>
protected virtual void OnSyntaxHighlightingChanged(IHighlightingDefinition newValue)
{
if (_Colorizer != null)
{
this.TextArea.TextView.LineTransformers.Remove(_Colorizer);
_Colorizer = null;
}
if (newValue != null)
{
_Colorizer = CreateColorizer(newValue);
if (_Colorizer != null)
{
this.TextArea.TextView.LineTransformers.Insert(0, _Colorizer);
}
}
}
void OnColorizerChanged(IVisualLineTransformer newValue)
{
if (newValue != null && this.SyntaxHighlighting != null)
{
throw new InvalidOperationException("You can only set either 'Colorizer' or 'SyntaxHighlighting'! Attempting to set 'Colorizer' while 'SyntaxHighlighting' has already been set!");
}
if (colorizer != null)
{
this.TextArea.TextView.LineTransformers.Remove(colorizer);
colorizer = null;
}
if (newValue != null)
{
colorizer = newValue;
if (colorizer != null)
{
this.TextArea.TextView.LineTransformers.Insert(0, colorizer);
}
}
}
void OnSyntaxHighlightingChanged(IHighlightingDefinition newValue)
{
if (newValue != null && this.Colorizer != null)
{
throw new InvalidOperationException("You can only set either 'Colorizer' or 'SyntaxHighlighting'! Attempting to set 'SyntaxHighlighting' while 'Colorizer' has already been set!");
}
if (colorizer != null)
{
this.TextArea.TextView.LineTransformers.Remove(colorizer);
colorizer = null;
}
if (newValue != null)
{
colorizer = CreateColorizer(newValue);
if (colorizer != null)
{
this.TextArea.TextView.LineTransformers.Insert(0, colorizer);
}
}
}
internal void RunTransformers(ITextRunConstructionContext context, IVisualLineTransformer[] transformers)
{
Debug.Assert(phase == LifetimePhase.Transforming);
foreach (IVisualLineTransformer transformer in transformers) {
transformer.Transform(context, elements);
}
// For some strange reason, WPF requires that either all or none of the typography properties are set.
if (elements.Any(e => e.TextRunProperties.TypographyProperties != null)) {
// Fix typographic properties
foreach (VisualLineElement element in elements) {
if (element.TextRunProperties.TypographyProperties == null) {
element.TextRunProperties.SetTypographyProperties(new DefaultTextRunTypographyProperties());
}
}
}
phase = LifetimePhase.Live;
}
internal void RunTransformers(ITextRunConstructionContext context, IVisualLineTransformer[] transformers)
{
foreach (IVisualLineTransformer transformer in transformers) {
transformer.Transform(context, elements);
}
}
void OnSyntaxHighlightingChanged(IHighlightingDefinition newValue)
{
if (colorizer != null) {
this.TextArea.TextView.LineTransformers.Remove(colorizer);
colorizer = null;
}
if (newValue != null) {
colorizer = CreateColorizer(newValue);
if (colorizer != null)
this.TextArea.TextView.LineTransformers.Insert(0, colorizer);
}
}
void LineTransformer_Removed(IVisualLineTransformer lineTransformer)
{
DisconnectFromTextView(lineTransformer);
Redraw();
}
void LineTransformer_Added(IVisualLineTransformer lineTransformer)
{
ConnectToTextView(lineTransformer);
Redraw();
}
void LineTransformer_Removed(IVisualLineTransformer lineTransformer)
{
DisconnectFromTextView(lineTransformer);
Redraw();
}
void LineTransformer_Added(IVisualLineTransformer lineTransformer)
{
ConnectToTextView(lineTransformer);
Redraw();
}
internal void RunTransformers(ITextRunConstructionContext context, IVisualLineTransformer[] transformers)
{
//TODO: VisualLine.RunTransformers()
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;
}
internal void RunTransformers(VisualLine line, IVisualLineTransformer[] transformers)
{
Debug.Assert(phase == LifetimePhase.Transforming);
foreach (IVisualLineTransformer transformer in transformers) {
transformer.Transform(line, elements);
}
phase = LifetimePhase.Live;
}