public void SetForegroundBrush(IBrush brush, int startIndex, int count)
{
var scb = brush as SolidColorBrush;
if (scb != null)
{
var color = new Pango.Color();
color.Parse(string.Format("#{0}", scb.Color.ToString().Substring(3)));
var brushAttr = new Pango.AttrForeground(color);
brushAttr.StartIndex = (uint)TextIndexToPangoIndex(startIndex);
brushAttr.EndIndex = (uint)TextIndexToPangoIndex(startIndex + count);
Layout.Attributes.Insert(brushAttr);
}
}
public FormattedTextImpl(
Pango.Context context,
string text,
Typeface typeface,
TextAlignment textAlignment,
TextWrapping wrapping,
Size constraint,
IReadOnlyList <FormattedTextStyleSpan> spans)
{
Contract.Requires <ArgumentNullException>(context != null);
Contract.Requires <ArgumentNullException>(text != null);
Layout = new Pango.Layout(context);
Layout.SetText(text);
Layout.FontDescription = new Pango.FontDescription
{
Family = typeface?.FontFamilyName ?? "monospace",
Size = Pango.Units.FromDouble(CorrectScale(typeface?.FontSize ?? 12)),
Style = (Pango.Style)(typeface?.Style ?? FontStyle.Normal),
Weight = (typeface?.Weight ?? FontWeight.Normal).ToCairo(),
};
Layout.Alignment = textAlignment.ToCairo();
Layout.Attributes = new Pango.AttrList();
Layout.Width = double.IsPositiveInfinity(constraint.Width) ? -1 : Pango.Units.FromDouble(constraint.Width);
if (spans != null)
{
foreach (var span in spans)
{
if (span.ForegroundBrush is SolidColorBrush scb)
{
var color = new Pango.Color();
color.Parse(string.Format("#{0}", scb.Color.ToString().Substring(3)));
var brushAttr = new Pango.AttrForeground(color);
brushAttr.StartIndex = (uint)TextIndexToPangoIndex(span.StartIndex);
brushAttr.EndIndex = (uint)TextIndexToPangoIndex(span.StartIndex + span.Length);
this.Layout.Attributes.Insert(brushAttr);
}
}
}
Size = Measure();
}
public void SetForegroundBrush(IBrush brush, int startIndex, int count)
{
var scb = brush as SolidColorBrush;
if (scb != null)
{
var color = new Pango.Color();
color.Parse(string.Format("#{0}", scb.Color.ToString().Substring(3)));
var brushAttr = new Pango.AttrForeground(color);
brushAttr.StartIndex = (uint)TextIndexToPangoIndex(startIndex);
brushAttr.EndIndex = (uint)TextIndexToPangoIndex(startIndex + count);
Layout.Attributes.Insert(brushAttr);
}
}
