void IChunkMarker.ChangeForeColor(MonoTextEditor editor, MonoDevelop.Ide.Editor.Highlighting.ColoredSegment chunk, ref Cairo.Color color)
{
//if (forground == null || editor == null) {
// return;
//}
//int markerStart = Segment.Offset;
//int markerEnd = Segment.EndOffset;
//if (chunk.EndOffset <= markerStart || markerEnd <= chunk.Offset)
// return;
//color = forground(editor).Foreground;
}
public async Task <HighlightedLine> GetHighlightedLineAsync(IDocumentLine line, CancellationToken cancellationToken)
{
var document = workspace.GetDocument(DocumentId);
if (document == null)
{
return(await DefaultSyntaxHighlighting.Instance.GetHighlightedLineAsync(line, cancellationToken));
}
// Empirical testing shows that we end up not reallocating the list if we pre-allocate that we have at least 2 times more colored segments than classifiers per line.
// Current Roslyn API does not allow for a Count getting without iteration, so leave it with a magic number which yields similar results.
var coloredSegments = new List <ColoredSegment> (32);
int offset = line.Offset;
int length = line.Length;
var span = new TextSpan(offset, length);
var classifications = Classifier.GetClassifiedSpans(await document.GetSemanticModelAsync().ConfigureAwait(false), span, workspace, cancellationToken);
int lastClassifiedOffsetEnd = offset;
ScopeStack scopeStack;
foreach (var curSpan in classifications)
{
var start = Math.Max(offset, curSpan.TextSpan.Start);
if (start < lastClassifiedOffsetEnd) // Work around for : https://github.com/dotnet/roslyn/issues/25648
{
continue;
}
if (start > lastClassifiedOffsetEnd)
{
scopeStack = userScope;
ColoredSegment whitespaceSegment = new ColoredSegment(lastClassifiedOffsetEnd - offset, start - lastClassifiedOffsetEnd, scopeStack);
coloredSegments.Add(whitespaceSegment);
}
scopeStack = GetStyleScopeStackFromClassificationType(curSpan.ClassificationType);
ColoredSegment curColoredSegment = new ColoredSegment(start - offset, curSpan.TextSpan.Length, scopeStack);
coloredSegments.Add(curColoredSegment);
lastClassifiedOffsetEnd = curSpan.TextSpan.End;
}
if (offset + length > lastClassifiedOffsetEnd)
{
scopeStack = userScope;
ColoredSegment whitespaceSegment = new ColoredSegment(lastClassifiedOffsetEnd - offset, offset + length - lastClassifiedOffsetEnd, scopeStack);
coloredSegments.Add(whitespaceSegment);
}
return(new HighlightedLine(line, coloredSegments));
}
internal static void ReplaceSegment(List <ColoredSegment> list, ColoredSegment newSegment)
{
if (list.Count == 0)
{
list.Add(newSegment);
return;
}
int i = list.Count;
while (i > 0 && list [i - 1].EndOffset > newSegment.Offset)
{
i--;
}
if (i >= list.Count)
{
list.Add(newSegment);
return;
}
int j = i;
while (j + 1 < list.Count && newSegment.EndOffset > list [j + 1].Offset)
{
j++;
}
var startItem = list [i];
var endItem = list [j];
list.RemoveRange(i, j - i + 1);
var lengthAfter = endItem.EndOffset - newSegment.EndOffset;
if (lengthAfter > 0)
{
list.Insert(i, new ColoredSegment(newSegment.EndOffset, lengthAfter, endItem.ScopeStack));
}
list.Insert(i, newSegment);
var lengthBefore = newSegment.Offset - startItem.Offset;
if (lengthBefore > 0)
{
list.Insert(i, new ColoredSegment(startItem.Offset, lengthBefore, startItem.ScopeStack));
}
}
void IChunkMarker.ChangeForeColor(MonoTextEditor editor, MonoDevelop.Ide.Editor.Highlighting.ColoredSegment chunk, ref Cairo.Color color)
{
if (Debugger.DebuggingService.IsDebugging)
{
return;
}
int markerStart = Segment.Offset;
int markerEnd = Segment.EndOffset;
if (chunk.EndOffset <= markerStart || markerEnd <= chunk.Offset)
{
return;
}
color = new Cairo.Color(
color.R,
color.G,
color.B,
0.6
);
}
public async Task <HighlightedLine> GetHighlightedLineAsync(IDocumentLine line, CancellationToken cancellationToken)
{
List <ColoredSegment> coloredSegments = new List <ColoredSegment> ();
int offset = line.Offset;
int length = line.Length;
var span = new TextSpan(offset, length);
var classifications = Classifier.GetClassifiedSpans(await workspace.GetDocument(documentId).GetSemanticModelAsync(), span, workspace, cancellationToken);
int lastClassifiedOffsetEnd = offset;
ScopeStack scopeStack;
foreach (var curSpan in classifications)
{
if (curSpan.TextSpan.Start > lastClassifiedOffsetEnd)
{
scopeStack = defaultScopeStack.Push(EditorThemeColors.UserTypes);
ColoredSegment whitespaceSegment = new ColoredSegment(lastClassifiedOffsetEnd - offset, curSpan.TextSpan.Start - lastClassifiedOffsetEnd, scopeStack);
coloredSegments.Add(whitespaceSegment);
}
string styleName = GetStyleNameFromClassificationType(curSpan.ClassificationType);
scopeStack = defaultScopeStack.Push(styleName);
ColoredSegment curColoredSegment = new ColoredSegment(curSpan.TextSpan.Start - offset, curSpan.TextSpan.Length, scopeStack);
coloredSegments.Add(curColoredSegment);
lastClassifiedOffsetEnd = curSpan.TextSpan.End;
}
if (offset + length > lastClassifiedOffsetEnd)
{
scopeStack = defaultScopeStack.Push(EditorThemeColors.UserTypes);
ColoredSegment whitespaceSegment = new ColoredSegment(lastClassifiedOffsetEnd - offset, offset + length - lastClassifiedOffsetEnd, scopeStack);
coloredSegments.Add(whitespaceSegment);
}
return(new HighlightedLine(line, coloredSegments));
}
void IChunkMarker.ChangeForeColor(MonoTextEditor editor, MonoDevelop.Ide.Editor.Highlighting.ColoredSegment chunk, ref Cairo.Color color)
{
if (Debugger.DebuggingService.IsDebugging)
{
return;
}
int markerStart = Segment.Offset;
int markerEnd = Segment.EndOffset;
if (chunk.EndOffset <= markerStart || markerEnd <= chunk.Offset)
{
return;
}
var bgc = (Cairo.Color)SyntaxHighlightingService.GetColor(editor.EditorTheme, EditorThemeColors.Background);
double alpha = 0.6;
color = new Cairo.Color(
color.R * alpha + bgc.R * (1.0 - alpha),
color.G * alpha + bgc.G * (1.0 - alpha),
color.B * alpha + bgc.B * (1.0 - alpha)
);
}
