/// <summary>
/// Creates WPF Run instances that can be used for TextBlock.Inlines.
/// </summary>
public TextRunProperties[] CreateRuns()
{
TextRunProperties[] runs = new TextRunProperties[stateChanges.Count];
for (int i = 0; i < runs.Length; i++)
{
int startOffset = stateChangeOffsets[i];
int endOffset = i + 1 < stateChangeOffsets.Count ? stateChangeOffsets[i + 1] : text.Length;
string runString = text.Substring(startOffset, endOffset - startOffset);
TextRunProperties r = new TextRunProperties();
HighlightingState state = stateChanges[i];
r.Foreground = state.Foreground;
r.Background = state.Background;
if (state.Weight != null)
{
r.FontWeight = state.Weight.Value;
}
if (state.Family != null)
{
r.FontFamily = state.Family.Value;
}
if (state.Style != null)
{
r.FontStyle = state.Style.Value;
}
runs[i] = r;
}
return(runs);
}
/// <summary>
/// Applies the properties from the HighlightingColor to the specified text segment.
/// </summary>
public void SetHighlighting(int offset, int length, HighlightingColor color)
{
if (color == null)
{
throw new ArgumentNullException("color");
}
int startIndex = GetIndexForOffset(offset);
int endIndex = GetIndexForOffset(offset + length);
for (int i = startIndex; i < endIndex; i++)
{
HighlightingState state = stateChanges[i];
if (color.Foreground != null)
{
state.Foreground = color.Foreground.GetBrush(null);
}
if (color.FontStyle != null)
{
state.Style = color.FontStyle;
}
if (color.FontWeight != null)
{
state.Weight = color.FontWeight;
}
}
}
/// <summary>
/// Creates WPF Run instances that can be used for TextBlock.Inlines.
/// </summary>
public Run[] CreateRuns()
{
Run[] runs = new Run[stateChanges.Count];
for (int i = 0; i < runs.Length; i++)
{
int startOffset = stateChangeOffsets[i];
int endOffset = i + 1 < stateChangeOffsets.Count ? stateChangeOffsets[i + 1] : text.Length;
Run r = new Run(text.Substring(startOffset, endOffset - startOffset));
HighlightingState state = stateChanges[i];
if (state.Foreground != null)
{
r.Foreground = state.Foreground;
}
if (state.Weight != null)
{
r.FontWeight = state.Weight.Value;
}
if (state.Family != null)
{
r.FontFamily = state.Family;
}
if (state.Style != null)
{
r.FontStyle = state.Style.Value;
}
runs[i] = r;
}
return(runs);
}
/// <summary>
/// Applies the properties from the HighlightingColor to the specified text segment.
/// </summary>
public void SetHighlighting(int offset, int length, HighlightingColor color)
{
if (color == null)
{
throw new ArgumentNullException("color");
}
if (color.Foreground == null && color.FontStyle == null && color.FontWeight == null)
{
// Optimization: don't split the HighlightingState when we're not changing
// any property. For example, the "Punctuation" color in C# is
// empty by default.
return;
}
int startIndex = GetIndexForOffset(offset);
int endIndex = GetIndexForOffset(offset + length);
for (int i = startIndex; i < endIndex; i++)
{
HighlightingState state = stateChanges[i];
if (color.Foreground != null)
{
state.Foreground = color.Foreground.GetBrush(null);
}
if (color.FontStyle != null)
{
state.Style = color.FontStyle;
}
if (color.FontWeight != null)
{
state.Weight = color.FontWeight;
}
}
}
HighlightedInlineBuilder(string text, int[] offsets, HighlightingState[] states)
{
this.text = text;
stateChangeOffsets.AddRange(offsets);
stateChanges.AddRange(states);
}
