public static UseDrawable Create(SvgUse svgUse, SKRect skViewport, DrawableBase?parent, IAssetLoader assetLoader, HashSet <Uri>?references, DrawAttributes ignoreAttributes = DrawAttributes.None)
{
var drawable = new UseDrawable(assetLoader, references)
{
Element = svgUse,
Parent = parent,
IgnoreAttributes = ignoreAttributes
};
drawable.IsDrawable = drawable.CanDraw(svgUse, drawable.IgnoreAttributes) && drawable.HasFeatures(svgUse, drawable.IgnoreAttributes);
if (!drawable.IsDrawable)
{
return(drawable);
}
if (SvgExtensions.HasRecursiveReference(svgUse, (e) => e.ReferencedElement, new HashSet <Uri>()))
{
drawable.IsDrawable = false;
return(drawable);
}
var svgReferencedElement = SvgExtensions.GetReference <SvgElement>(svgUse, svgUse.ReferencedElement);
if (svgReferencedElement is null)
{
drawable.IsDrawable = false;
return(drawable);
}
var x = svgUse.X.ToDeviceValue(UnitRenderingType.Horizontal, svgUse, skViewport);
var y = svgUse.Y.ToDeviceValue(UnitRenderingType.Vertical, svgUse, skViewport);
var width = svgUse.Width.ToDeviceValue(UnitRenderingType.Horizontal, svgUse, skViewport);
var height = svgUse.Height.ToDeviceValue(UnitRenderingType.Vertical, svgUse, skViewport);
if (width <= 0f)
{
width = new SvgUnit(SvgUnitType.Percentage, 100f).ToDeviceValue(UnitRenderingType.Horizontal, svgUse, skViewport);
}
if (height <= 0f)
{
height = new SvgUnit(SvgUnitType.Percentage, 100f).ToDeviceValue(UnitRenderingType.Vertical, svgUse, skViewport);
}
var originalReferencedElementParent = svgReferencedElement.Parent;
try
{
if (s_referencedElementParent is { })
{
s_referencedElementParent.SetValue(svgReferencedElement, svgUse);
}
}