using Goo;
using Sandbox.UI;
using static Sandbox.DemoTokens;

namespace Sandbox.RadialWheel;

// Glassy inner disc behind the Center area. Smaller than the wheel; wedge gaps
// no longer reveal a dark ring. Blurs the game world that shows through the
// translucent wedges + center area.
public static class Backdrop
{
    public static Container Build( float innerDiameterPx, float alpha, float blurPx, float highlightAlpha ) => new Container
    {
        Key             = "backdrop",
        Position        = PositionMode.Absolute,
        Top             = Length.Percent( 50 ),
        Left            = Length.Percent( 50 ),
        Width           = innerDiameterPx,
        Height          = innerDiameterPx,
        Transform       = Goo.PanelTransform.Translate( -innerDiameterPx * 0.5f, -innerDiameterPx * 0.5f ),
        PointerEvents   = PointerEvents.None,
        BackgroundColor = Ink1.WithAlpha( alpha ),
        BackdropFilterBlur = blurPx,
        BorderColor     = FgPrimary.WithAlpha( highlightAlpha ),
        BorderWidth     = 1,
        BorderTopLeftRadius     = Length.Percent( 50 ),
        BorderTopRightRadius    = Length.Percent( 50 ),
        BorderBottomLeftRadius  = Length.Percent( 50 ),
        BorderBottomRightRadius = Length.Percent( 50 ),
    };
}