protected override bool OnExposeEvent(Gdk.EventExpose evnt)
{
Gdk.Rectangle rect = Allocation;
//Gdk.Rectangle.Right and Bottom are inconsistent
int right = rect.X + rect.Width, bottom = rect.Y + rect.Height;
var bcolor = backgroundColorSet ? BackgroundColor : Style.Background(Gtk.StateType.Normal);
using (Cairo.Context cr = Gdk.CairoHelper.Create(evnt.Window)) {
if (GradientBackround)
{
cr.NewPath();
cr.MoveTo(rect.X, rect.Y);
cr.RelLineTo(rect.Width, 0);
cr.RelLineTo(0, rect.Height);
cr.RelLineTo(-rect.Width, 0);
cr.RelLineTo(0, -rect.Height);
cr.ClosePath();
using (Cairo.Gradient pat = new Cairo.LinearGradient(rect.X, rect.Y, rect.X, bottom)) {
pat.AddColorStop(0, bcolor.ToCairoColor());
Xwt.Drawing.Color gcol = bcolor.ToXwtColor();
gcol.Light -= 0.1;
if (gcol.Light < 0)
{
gcol.Light = 0;
}
pat.AddColorStop(1, gcol.ToCairoColor());
cr.SetSource(pat);
cr.Fill();
}
}
else
{
if (backgroundColorSet)
{
Gdk.GC gc = new Gdk.GC(GdkWindow);
gc.RgbFgColor = bcolor;
evnt.Window.DrawRectangle(gc, true, rect.X, rect.Y, rect.Width, rect.Height);
gc.Dispose();
}
}
}
base.OnExposeEvent(evnt);
using (Cairo.Context cr = Gdk.CairoHelper.Create(evnt.Window)) {
cr.SetSourceColor(Style.Dark(Gtk.StateType.Normal).ToCairoColor());
double y = rect.Y + topMargin / 2d;
cr.LineWidth = topMargin;
cr.Line(rect.X, y, right, y);
cr.Stroke();
y = bottom - bottomMargin / 2d;
cr.LineWidth = bottomMargin;
cr.Line(rect.X, y, right, y);
cr.Stroke();
double x = rect.X + leftMargin / 2d;
cr.LineWidth = leftMargin;
cr.Line(x, rect.Y, x, bottom);
cr.Stroke();
x = right - rightMargin / 2d;
cr.LineWidth = rightMargin;
cr.Line(x, rect.Y, x, bottom);
cr.Stroke();
return(false);
}
}
public override void AddColorStop(object backend, double position, Xwt.Drawing.Color color)
{
Cairo.Gradient g = (Cairo.Gradient)backend;
g.AddColorStop(position, color.ToCairoColor());
}
