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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.Drawing.Drawing2D;
internal static class BrushExtensions
{
internal static Brush ToGdiBrush(this System.Windows.Media.Brush brush)
{
if (brush.GetType() == typeof(System.Windows.Media.SolidColorBrush))
{
return new SolidBrush((brush as System.Windows.Media.SolidColorBrush).Color.ToGdiColor());
}
else if (brush.GetType() == typeof(System.Windows.Media.LinearGradientBrush))
{
System.Windows.Media.LinearGradientBrush b = brush as System.Windows.Media.LinearGradientBrush;
double angle = Math.Atan2(b.EndPoint.Y - b.StartPoint.Y, b.EndPoint.X - b.StartPoint.X) * 180 / Math.PI;
LinearGradientBrush gradient = new LinearGradientBrush(new Rectangle(0, 0, 200, 100), Color.Black, Color.Black, (float)angle);
ColorBlend blend = new ColorBlend();
List<Color> colors = new List<Color>();
List<float> offsets = new List<float>();
foreach (var stop in b.GradientStops)
{
colors.Add(stop.Color.ToGdiColor());
offsets.Add((float)stop.Offset);
}
blend.Colors = colors.ToArray();
blend.Positions = offsets.ToArray();
gradient.InterpolationColors = blend;
return gradient;
}
else
{
return new LinearGradientBrush(new PointF(0, 0), new Point(200, 100), Color.Black, Color.Black);
}
}
}
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