protected override bool OnDrawn(Cairo.Context cr)
{
if (!pulsator.IsPulsing)
{
return(base.OnDrawn(cr));
}
double x = Allocation.Width / 2;
double y = Allocation.Height / 2;
double r = Math.Min(Allocation.Width, Allocation.Height) / 2;
double alpha = Choreographer.Compose(pulsator.Percent, Easing.Sine);
Gdk.RGBA rgba = StyleContext.GetBackgroundColor(StateFlags.Selected);
Cairo.Color color = CairoExtensions.GdkRGBAToCairoColor(rgba);
Cairo.RadialGradient fill = new Cairo.RadialGradient(x, y, 0, x, y, r);
color.A = alpha;
fill.AddColorStop(0, color);
fill.AddColorStop(0.5, color);
color.A = 0;
fill.AddColorStop(1, color);
cr.Arc(x, y, r, 0, 2 * Math.PI);
cr.Pattern = fill;
cr.Fill();
fill.Destroy();
return(base.OnDrawn(cr));
}
protected override bool OnExposeEvent(Gdk.EventExpose evnt)
{
if (!pulsator.IsPulsing)
{
return(base.OnExposeEvent(evnt));
}
Cairo.Context cr = Gdk.CairoHelper.Create(GdkWindow);
double x = Allocation.X + Allocation.Width / 2;
double y = Allocation.Y + Allocation.Height / 2;
double r = Math.Min(Allocation.Width, Allocation.Height) / 2;
double alpha = Choreographer.Compose(pulsator.Percent, Easing.Sine);
Cairo.Color color = CairoExtensions.GdkColorToCairoColor(Style.Background(StateType.Selected));
Cairo.RadialGradient fill = new Cairo.RadialGradient(x, y, 0, x, y, r);
color.A = alpha;
fill.AddColorStop(0, color);
fill.AddColorStop(0.5, color);
color.A = 0;
fill.AddColorStop(1, color);
cr.Arc(x, y, r, 0, 2 * Math.PI);
cr.Pattern = fill;
cr.Fill();
fill.Destroy();
CairoExtensions.DisposeContext(cr);
return(base.OnExposeEvent(evnt));
}
public static void Gradient (Cairo.Context cr, Theme theme, Rect rect, double opacity)
{
cr.Save ();
cr.Translate (rect.X, rect.Y);
var x = rect.Width / 2.0;
var y = rect.Height / 2.0;
var grad = new Cairo.RadialGradient (x, y, 0, x, y, rect.Width / 2.0);
grad.AddColorStop (0, new Cairo.Color (0, 0, 0, 0.1 * opacity));
grad.AddColorStop (1, new Cairo.Color (0, 0, 0, 0.35 * opacity));
cr.Pattern = grad;
CairoExtensions.RoundedRectangle (cr, rect.X, rect.Y, rect.Width, rect.Height, theme.Context.Radius);
cr.Fill ();
grad.Destroy ();
cr.Restore ();
}
public static void Gradient(Cairo.Context cr, Theme theme, Rect rect, double opacity)
{
cr.Save();
cr.Translate(rect.X, rect.Y);
var x = rect.Width / 2.0;
var y = rect.Height / 2.0;
var grad = new Cairo.RadialGradient(x, y, 0, x, y, rect.Width / 2.0);
grad.AddColorStop(0, new Cairo.Color(0, 0, 0, 0.1 * opacity));
grad.AddColorStop(1, new Cairo.Color(0, 0, 0, 0.35 * opacity));
cr.Pattern = grad;
CairoExtensions.RoundedRectangle(cr, rect.X, rect.Y, rect.Width, rect.Height, theme.Context.Radius);
cr.Fill();
grad.Destroy();
cr.Restore();
}
protected override bool OnDrawn(Cairo.Context cr)
{
if (!pulsator.IsPulsing) {
return base.OnDrawn (cr);
}
double x = Allocation.Width / 2;
double y = Allocation.Height / 2;
double r = Math.Min (Allocation.Width, Allocation.Height) / 2;
double alpha = Choreographer.Compose (pulsator.Percent, Easing.Sine);
Gdk.RGBA rgba = StyleContext.GetBackgroundColor (StateFlags.Selected);
Cairo.Color color = CairoExtensions.GdkRGBAToCairoColor (rgba);
Cairo.RadialGradient fill = new Cairo.RadialGradient (x, y, 0, x, y, r);
color.A = alpha;
fill.AddColorStop (0, color);
fill.AddColorStop (0.5, color);
color.A = 0;
fill.AddColorStop (1, color);
cr.Arc (x, y, r, 0, 2 * Math.PI);
cr.Pattern = fill;
cr.Fill ();
fill.Destroy ();
return base.OnDrawn (cr);
}
protected override bool OnExposeEvent (Gdk.EventExpose evnt)
{
if (!pulsator.IsPulsing) {
return base.OnExposeEvent (evnt);
}
Cairo.Context cr = Gdk.CairoHelper.Create (GdkWindow);
double x = Allocation.X + Allocation.Width / 2;
double y = Allocation.Y + Allocation.Height / 2;
double r = Math.Min (Allocation.Width, Allocation.Height) / 2;
double alpha = Choreographer.Compose (pulsator.Percent, Easing.Sine);
Cairo.Color color = CairoExtensions.GdkColorToCairoColor (Style.Background (StateType.Selected));
Cairo.RadialGradient fill = new Cairo.RadialGradient (x, y, 0, x, y, r);
color.A = alpha;
fill.AddColorStop (0, color);
fill.AddColorStop (0.5, color);
color.A = 0;
fill.AddColorStop (1, color);
cr.Arc (x, y, r, 0, 2 * Math.PI);
cr.Pattern = fill;
cr.Fill ();
fill.Destroy ();
CairoExtensions.DisposeContext (cr);
return base.OnExposeEvent (evnt);
}
