private void FromSkipToNoSkip(int line, bool hasText, int textAt)
{
for (int i = 0; i < _activeSpans.Count; ++i)
{
var span = _activeSpans[i];
if (span == null)
{
continue;
}
bool remove = false;
if (hasText)
{
if (span.Indent > textAt || (span.Indent == textAt && !_options.VisibleAtTextEnd))
{
remove = true;
}
}
else if (!_options.VisibleEmpty)
{
remove = true;
}
if (remove)
{
LineSpan.Unlink(span, CancellationToken.None);
_activeSpans[i] = null;
}
else
{
span.FirstLine = span.LastLine = line;
}
}
if (!hasText && _options.VisibleEmpty)
{
var indents = GetIndents(_previousLine.TextAt);
for (int i = 0; i < _activeSpans.Count; ++i)
{
var span = _activeSpans[i];
if (span == null)
{
continue;
}
if (indents.Remove(span.Indent))
{
span.FirstLine = span.LastLine = line;
}
}
StartSpans(indents, line, int.MaxValue);
}
}
public override void AddLine(LineSpan lineSpan, bool willUpdateImmediately)
{
if (lineSpan.Highlight)
{
lineSpan.Highlight = false;
if (!willUpdateImmediately)
{
Modified.Add(lineSpan);
}
}
}
public override IEnumerable <LineSpan> GetModified()
{
if (Nearest != null)
{
while (Modified.Remove(Nearest))
{
}
Nearest.Highlight = true;
Modified.Add(Nearest);
Modified.AddRange(Nearest.LinkedLines);
Nearest = null;
}
return(Modified);
}
private LineSpan StartSpan(int line, int indent, LineSpanType lineType)
{
var span = new LineSpan(line, line, indent, lineType);
for (int i = 0; i < _activeSpans.Count; ++i)
{
if (_activeSpans[i] == null)
{
_activeSpans[i] = span;
return(span);
}
}
_activeSpans.Add(span);
return(span);
}
private void FromNoSkipToSkip(int line)
{
for (int i = 0; i < _activeSpans.Count; ++i)
{
var span = _activeSpans[i];
if (span == null)
{
continue;
}
span.LastLine = line - 1;
_completedSpans.Add(span);
var newSpan = new LineSpan(line, line, span.Indent, span.Type);
LineSpan.Link(span, newSpan, CancellationToken.None);
_activeSpans[i] = newSpan;
}
}
public override void AddLine(LineSpan line, bool willUpdateImmediately)
{
bool isTouching = false;
if (line.FirstLine - 1 == LineNumber ||
line.LastLine + 1 == LineNumber)
{
isTouching = true;
}
if (line.Highlight != isTouching)
{
line.Highlight = isTouching;
if (!willUpdateImmediately)
{
Modified.Add(line);
}
Modified.AddRange(line.LinkedLines);
}
}
void UpdateGuide(LineSpan lineSpan, Line adornment, double left, double top, double bottom)
{
if (bottom <= top)
{
adornment.Visibility = Visibility.Collapsed;
}
else
{
adornment.X1 = left + 0.5;
#if DEBUG
adornment.X2 = left + 1.5;
#else
adornment.X2 = left + 0.5;
#endif
adornment.Y1 = top;
adornment.Y2 = bottom;
adornment.StrokeDashOffset = top;
adornment.Visibility = Visibility.Visible;
UpdateGuide(lineSpan, adornment);
}
}
public override void AddLine(LineSpan line, bool willUpdateImmediately)
{
if (line.FirstLine <= LineNumber &&
LineNumber <= line.LastLine &&
((line.LastLine - line.FirstLine) >= MinimumLength || line.LinkedLines.Any()) &&
line.Indent <= Position &&
(Nearest == null || line.Indent > Nearest.Indent))
{
Nearest = line;
}
if (line.Highlight)
{
line.Highlight = false;
if (!willUpdateImmediately)
{
Modified.Add(line);
}
Modified.AddRange(line.LinkedLines);
}
}
public override void AddLine(LineSpan line, bool willUpdateImmediately)
{
bool isTouching = false;
if (line.FirstLine - 1 <= LineNumber &&
LineNumber <= line.LastLine + 1 &&
(line.LastLine - line.FirstLine) >= MinimumLength &&
line.Indent == Position)
{
isTouching = true;
}
if (line.Highlight != isTouching)
{
line.Highlight = isTouching;
if (!willUpdateImmediately)
{
Modified.Add(line);
}
Modified.AddRange(line.LinkedLines);
}
}
/// <summary>
/// Updates the line <paramref name="guide"/> with a new format.
/// </summary>
/// <param name="guide">The <see cref="Line"/> to update.</param>
/// <param name="formatIndex">The new format index.</param>
void UpdateGuide(LineSpan lineSpan, Line adornment)
{
if (lineSpan == null || adornment == null)
{
return;
}
LineFormat format;
if (lineSpan.Type == LineSpanType.PageWidthMarker)
{
if (!Theme.PageWidthMarkers.TryGetValue(lineSpan.Indent, out format))
{
format = Theme.DefaultLineFormat;
}
}
else if (!Theme.LineFormats.TryGetValue(lineSpan.FormatIndex, out format))
{
format = Theme.DefaultLineFormat;
}
if (!format.Visible)
{
adornment.Visibility = Visibility.Hidden;
return;
}
bool highlight = lineSpan.Highlight || lineSpan.LinkedLines.Any(ls => ls.Highlight);
var lineStyle = highlight ? format.HighlightStyle : format.LineStyle;
var lineColor = (highlight && !lineStyle.HasFlag(LineStyle.Glow)) ?
format.HighlightColor : format.LineColor;
Brush brush;
if (!GuideBrushCache.TryGetValue(lineColor, out brush))
{
brush = new SolidColorBrush(lineColor.ToSWMC());
if (brush.CanFreeze)
{
brush.Freeze();
}
GuideBrushCache[lineColor] = brush;
}
adornment.Stroke = brush;
adornment.StrokeThickness = lineStyle.GetStrokeThickness();
adornment.StrokeDashArray = lineStyle.GetStrokeDashArray();
if (lineStyle.HasFlag(LineStyle.Dotted) || lineStyle.HasFlag(LineStyle.Dashed))
{
adornment.SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Unspecified);
}
else
{
adornment.SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Aliased);
}
if (lineStyle.HasFlag(LineStyle.Glow))
{
Effect effect;
var glowColor = highlight ? format.HighlightColor : format.LineColor;
if (!GlowEffectCache.TryGetValue(glowColor, out effect))
{
effect = new DropShadowEffect
{
Color = glowColor.ToSWMC(),
BlurRadius = LineStyle.Thick.GetStrokeThickness(),
Opacity = 1.0,
ShadowDepth = 0.0,
RenderingBias = RenderingBias.Performance
};
if (effect.CanFreeze)
{
effect.Freeze();
}
GlowEffectCache[glowColor] = effect;
}
try
{
adornment.Effect = effect;
}
catch (COMException)
{
// No sensible way to deal with this exception, so we'll
// fall back on changing the color.
adornment.Effect = null;
if (!GuideBrushCache.TryGetValue(glowColor, out brush))
{
brush = new SolidColorBrush(glowColor.ToSWMC());
if (brush.CanFreeze)
{
brush.Freeze();
}
GuideBrushCache[glowColor] = brush;
}
adornment.Stroke = brush;
}
}
else
{
adornment.Effect = null;
}
}
/// <summary> /// Updates the internal state based on the line. All lines should be /// passed. /// </summary> /// <param name="lineSpan"> /// The line to use and potentially update. /// </param> /// <param name="willUpdateImmediately"> /// If True, lines modified directly will not be returned again by /// GetModified(). However, some lines may be modified indirectly, so a /// call to GetModified() is still required.</param> public abstract void AddLine(LineSpan lineSpan, bool willUpdateImmediately);
protected CaretNearestLeftBase(VirtualSnapshotPoint location, int tabSize, int minimumLength)
: base(location, tabSize)
{
Nearest = null;
MinimumLength = minimumLength - 1;
}