public static MaskDrawable Create(SvgMask svgMask, SKRect skViewport, DrawableBase?parent, IAssetLoader assetLoader, HashSet <Uri>?references, DrawAttributes ignoreAttributes = DrawAttributes.None)
{
var drawable = new MaskDrawable(assetLoader, references)
{
Element = svgMask,
Parent = parent,
IgnoreAttributes = ignoreAttributes,
IsDrawable = true
};
if (!drawable.IsDrawable)
{
return(drawable);
}
var maskUnits = svgMask.MaskUnits;
var maskContentUnits = svgMask.MaskContentUnits;
var xUnit = svgMask.X;
var yUnit = svgMask.Y;
var widthUnit = svgMask.Width;
var heightUnit = svgMask.Height;
// TODO: Pass correct skViewport
var skRectTransformed = SvgExtensions.CalculateRect(xUnit, yUnit, widthUnit, heightUnit, maskUnits, skViewport, skViewport, svgMask);
if (skRectTransformed is null)
{
drawable.IsDrawable = false;
return(drawable);
}
var skMatrix = SKMatrix.CreateIdentity();
if (maskContentUnits == SvgCoordinateUnits.ObjectBoundingBox)
{
var skBoundsTranslateTransform = SKMatrix.CreateTranslation(skViewport.Left, skViewport.Top);
skMatrix = skMatrix.PreConcat(skBoundsTranslateTransform);
var skBoundsScaleTransform = SKMatrix.CreateScale(skViewport.Width, skViewport.Height);
skMatrix = skMatrix.PreConcat(skBoundsScaleTransform);
}
drawable.CreateChildren(svgMask, skViewport, drawable, assetLoader, references, ignoreAttributes);
drawable.Initialize(skRectTransformed.Value, skMatrix);
return(drawable);
}