protected override bool OnDrawn(Context cr)
{
int w, h;
this.GdkWindow.GetSize(out w, out h);
// We clear the surface with a transparent color if possible
if (supportAlpha)
{
cr.SetSourceRGBA(1.0, 1.0, 1.0, 0.0);
}
else
{
cr.SetSourceRGB(1.0, 1.0, 1.0);
}
cr.Operator = Operator.Source;
cr.Paint();
cr.LineWidth = GtkWorkarounds.GetScaleFactor(Content) > 1 ? 2 : 1;
var bounds = new Xwt.Rectangle(cr.LineWidth / 2, cr.LineWidth / 2, w - cr.LineWidth, h - cr.LineWidth);
var calibratedRect = RecalibrateChildRectangle(bounds);
// Fill it with one round rectangle
RoundRectangle(cr, calibratedRect, radius);
// Triangle
// We first begin by positionning ourselves at the top-center or bottom center of the previous rectangle
var arrowX = bounds.Center.X + arrowDelta;
var arrowY = arrowPosition == Xwt.Popover.Position.Top ? calibratedRect.Top + cr.LineWidth : calibratedRect.Bottom;
cr.MoveTo(arrowX, arrowY);
// We draw the rectangle path
DrawTriangle(cr);
// We use it
if (supportAlpha)
{
cr.SetSourceRGBA(0.0, 0.0, 0.0, 0.2);
}
else
{
cr.SetSourceRGB(238d / 255d, 238d / 255d, 238d / 255d);
}
cr.StrokePreserve();
cr.SetSourceRGBA(BackgroundColor.R, BackgroundColor.G, BackgroundColor.B, BackgroundColor.A);
cr.Fill();
return(base.OnDrawn(cr));
}
public static double GetScaleFactor(Gtk.Widget w)
{
return(GtkWorkarounds.GetScaleFactor(w));
}
