protected override void ArrangeCore(SKRect finalRect)
{
base.ArrangeCore(finalRect);
//on construit le rectangle des fils
_childrenBounds = new SKRect(0, 0, boundsMinusMargin.Width - Padding.Right, boundsMinusMargin.Height - Padding.Bottom);
//on construit la transfromation
_childrenVisualTransform = VisualTransform.Translate(Padding.Left, Padding.Top);
ArrangeChildren(_childrenBounds);
}
public Matrix TransformToAncestor(Visual ancestor)
{
Matrix transformMatrix = !VisualTransform.IsNullOrIdentity() ? VisualTransform : Matrix.Identity;
Matrix offsetMatrix = VisualOffset != Point.Zero ? Matrix.TranslationMatrix(VisualOffset.X, VisualOffset.Y) : Matrix.Identity;
Matrix parentMatrix = VisualParent != null && VisualParent != ancestor?VisualParent.TransformToAncestor(ancestor) : Matrix.Identity;
Matrix value = transformMatrix * offsetMatrix * parentMatrix;
return(value);
}
public Visual HitTest(Point position)
{
if (!GetHitTestBounds().Contains(position))
{
return(null);
}
Point relativePosition = VisualTransform.IsNullOrIdentity() ? position - VisualOffset : (position - VisualOffset) * VisualTransform.Inverse;
for (int i = VisualChildren.Count - 1; i >= 0; i--)
{
Visual childHit = ((UIElement)VisualChildren[i]).HitTest(relativePosition);
if (childHit != null)
{
return(childHit);
}
}
return(HitTestOverride(relativePosition) ? this : null);
}
