/// <inheritdoc/>
protected override bool OnDraw(CanvasDevice device, CanvasDrawingSession session, Vector2 size)
{
// Create our Brush
if (GradientStops != null && GradientStops.Count > 0)
{
var gradientBrush = new CanvasRadialGradientBrush(
device,
GradientStops.ToWin2DGradientStops(),
SpreadMethod.ToEdgeBehavior(),
(CanvasAlphaMode)(int)AlphaMode,
ColorInterpolationMode.ToCanvasColorSpace(),
CanvasColorSpace.Srgb,
CanvasBufferPrecision.Precision8UIntNormalized)
{
// Calculate Surface coordinates from 0.0-1.0 range given in WPF brush
RadiusX = size.X * (float)RadiusX,
RadiusY = size.Y * (float)RadiusY,
Center = size * Center.ToVector2(),
// Calculate Win2D Offset from origin/center used in WPF brush
OriginOffset = size * (GradientOrigin.ToVector2() - Center.ToVector2()),
};
// Use brush to draw on our canvas
session.FillRectangle(size.ToRect(), gradientBrush);
gradientBrush.Dispose();
return(true);
}
return(false);
}
public bool Equals(CommonRadialGradientBrush other)
{
return(other != null &&
base.Equals(other) &&
Center.Equals(other.Center) &&
GradientOrigin.Equals(other.GradientOrigin) &&
RadiusX == other.RadiusX &&
RadiusY == other.RadiusY);
}
public override int GetHashCode()
{
var hashCode = base.GetHashCode();
unchecked {
hashCode = hashCode * -1521134295 + Center.GetHashCode();
hashCode = hashCode * -1521134295 + GradientOrigin.GetHashCode();
hashCode = hashCode * -1521134295 + RadiusX.GetHashCode();
hashCode = hashCode * -1521134295 + RadiusY.GetHashCode();
}
return(hashCode);
}
