public void PaintHeaderBackground()
{
Graphics g = Graphics;
Rectangle r = ClientBounds;
Color color = BackColor;
Color startColor = ColorConverter.AlphaBlendColor(Color.White, color, 100);
if (IsTransparent)
{
color = ColorConverter.AlphaColor(color, 200);
startColor = ColorConverter.AlphaColor(startColor, 150);
using (GraphicsPlus gp = new GraphicsPlus(g))
{
PointF p1 = new PointF(r.X, r.Y);
PointF p2 = new PointF(r.X, r.Bottom);
using (LinearGradientBrush backGround = new LinearGradientBrush(p1, p2, startColor, color))
{
gp.FillRectangle(backGround, r);
}
}
}
else
{
GdiExt.GradientFill(g, r, startColor, color, GdiExt.FillDirection.TopToBottom);
}
}
private void PaintTemplateBackground()
{
Graphics g = Graphics;
Rectangle r = ClientBounds;
Color color = BackColor;
if (IsTransparent)
{
color = ColorConverter.AlphaColor(color, 220);
using (GraphicsPlus gp = new GraphicsPlus(g))
{
using (SolidBrushPlus backGround = new SolidBrushPlus(color))
{
gp.FillRectangle(backGround, r);
}
}
}
else
{
using (SolidBrush brush = new SolidBrush(color))
{
g.FillRectangle(brush, r);
}
}
}
protected virtual void OnPaintBackground(FluidPaintEventArgs e)
{
if (PaintBackground != null) PaintBackground(this, e);
else
{
if (!BackColor.IsEmpty && BackColor != Color.Transparent)
{
Graphics g = e.Graphics;
if (BackColor.A == 255 || BackColor.A == 0)
{
SolidBrush brush = Brushes.GetBrush(BackColor);
g.FillRectangle(brush, e.ControlBounds);
}
else
{
using (GraphicsPlus gp = new GraphicsPlus(g))
{
using (SolidBrushPlus brush = new SolidBrushPlus(BackColor))
{
gp.FillRectangle(brush, e.ControlBounds);
}
}
}
}
}
}
