void ApplyStyle(Dictionary <string, string> style, ref Pen pen, out bool hasPen, ref Brush brush, out bool hasBrush)
{
//
// Pen attributes
//
var strokeWidth = GetString(style, "stroke-width");
if (!string.IsNullOrWhiteSpace(strokeWidth))
{
if (pen == null)
{
pen = new Pen();
}
pen.Width = ReadNumber(strokeWidth);
}
var strokeOpacity = GetString(style, "stroke-opacity");
if (!string.IsNullOrWhiteSpace(strokeOpacity))
{
if (pen == null)
{
pen = new Pen();
}
pen.Color = pen.Color.WithAlpha(ReadNumber(strokeOpacity));
}
//
// Pen
//
var stroke = GetString(style, "stroke").Trim();
if (string.IsNullOrEmpty(stroke))
{
// No change
hasPen = false;
}
else if (stroke.Equals("none", StringComparison.OrdinalIgnoreCase))
{
hasPen = true;
pen = null;
}
else
{
hasPen = true;
if (pen == null)
{
pen = new Pen();
}
Color color;
if (Colors.TryParse(stroke, out color))
{
if (pen.Color.Alpha == 1)
{
pen.Color = color;
}
else
{
pen.Color = color.WithAlpha(pen.Color.Alpha);
}
}
}
//
// Brush attributes
//
var fillOpacity = GetString(style, "fill-opacity");
if (!string.IsNullOrWhiteSpace(fillOpacity))
{
if (brush == null)
{
brush = new SolidBrush();
}
var sb = brush as SolidBrush;
if (sb != null)
{
sb.Color = sb.Color.WithAlpha(ReadNumber(fillOpacity));
}
}
//
// Brush
//
var fill = GetString(style, "fill").Trim();
if (string.IsNullOrEmpty(fill))
{
// No change
hasBrush = false;
}
else if (fill.Equals("none", StringComparison.OrdinalIgnoreCase))
{
hasBrush = true;
brush = null;
}
else
{
hasBrush = true;
Color color;
if (Colors.TryParse(fill, out color))
{
var sb = brush as SolidBrush;
if (sb == null)
{
brush = new SolidBrush(color);
}
else
{
if (sb.Color.Alpha == 1)
{
sb.Color = color;
}
else
{
sb.Color = color.WithAlpha(sb.Color.Alpha);
}
}
}
else
{
var urlM = fillUrlRe.Match(fill);
if (urlM.Success)
{
var id = urlM.Groups [1].Value.Trim();
brush = GetGradientBrush(id, null);
}
else
{
throw new NotSupportedException("Fill " + fill);
}
}
}
}
