private VisualElement PickAll(VisualElement root, Vector2 point, List <VisualElement> picked = null)
{
VisualElement result;
if ((root.pseudoStates & PseudoStates.Invisible) == PseudoStates.Invisible)
{
result = null;
}
else
{
Vector3 v = root.WorldToLocal(point);
bool flag = root.ContainsPoint(v);
if (!flag && root.clippingOptions != VisualElement.ClippingOptions.NoClipping)
{
result = null;
}
else
{
if (picked != null && root.enabledInHierarchy && root.pickingMode == PickingMode.Position)
{
picked.Add(root);
}
VisualElement visualElement = null;
for (int i = root.shadow.childCount - 1; i >= 0; i--)
{
VisualElement root2 = root.shadow[i];
VisualElement visualElement2 = this.PickAll(root2, point, picked);
if (visualElement == null && visualElement2 != null)
{
visualElement = visualElement2;
}
}
if (visualElement != null)
{
result = visualElement;
}
else
{
PickingMode pickingMode = root.pickingMode;
if (pickingMode != PickingMode.Position)
{
if (pickingMode != PickingMode.Ignore)
{
}
}
else if (flag && root.enabledInHierarchy)
{
result = root;
return(result);
}
result = null;
}
}
}
return(result);
}
VisualElement PickAll(VisualElement root, Vector2 point, List <VisualElement> picked = null)
{
// do not pick invisible
if ((root.pseudoStates & PseudoStates.Invisible) == PseudoStates.Invisible)
{
return(null);
}
Vector3 localPoint = root.WorldToLocal(point);
bool containsPoint = root.ContainsPoint(localPoint);
// we only skip children in the case we visually clip them
if (!containsPoint && root.clippingOptions != VisualElement.ClippingOptions.NoClipping)
{
return(null);
}
if (picked != null && root.enabledInHierarchy && root.pickingMode == PickingMode.Position)
{
picked.Add(root);
}
VisualElement returnedChild = null;
// Depth first in reverse order, do children
for (int i = root.shadow.childCount - 1; i >= 0; i--)
{
var child = root.shadow[i];
var result = PickAll(child, point, picked);
if (returnedChild == null && result != null)
{
returnedChild = result;
}
}
if (returnedChild != null)
{
return(returnedChild);
}
switch (root.pickingMode)
{
case PickingMode.Position:
{
if (containsPoint && root.enabledInHierarchy)
{
return(root);
}
}
break;
case PickingMode.Ignore:
break;
}
return(null);
}
private static VisualElement PerformPick(VisualElement root, Vector2 point, List <VisualElement> picked = null)
{
// do not pick invisible
if (root.visible == false)
{
return(null);
}
if (root.pickingMode == PickingMode.Ignore && root.shadow.childCount == 0)
{
return(null);
}
Vector3 localPoint = root.WorldToLocal(point);
bool containsPoint = root.ContainsPoint(localPoint);
// we only skip children in the case we visually clip them
if (!containsPoint && root.ShouldClip())
{
return(null);
}
VisualElement returnedChild = null;
// Depth first in reverse order, do children
for (int i = root.shadow.childCount - 1; i >= 0; i--)
{
var child = root.shadow[i];
var result = PerformPick(child, point, picked);
if (returnedChild == null && result != null)
{
returnedChild = result;
}
}
if (picked != null && root.enabledInHierarchy && root.pickingMode == PickingMode.Position && containsPoint)
{
picked.Add(root);
}
if (returnedChild != null)
{
return(returnedChild);
}
switch (root.pickingMode)
{
case PickingMode.Position:
{
if (containsPoint && root.enabledInHierarchy)
{
return(root);
}
}
break;
case PickingMode.Ignore:
break;
}
return(null);
}
public static Rect ChangeCoordinatesTo(this VisualElement src, VisualElement dest, Rect rect)
{
return(dest.WorldToLocal(src.LocalToWorld(rect)));
}
public static Vector2 ChangeCoordinatesTo(this VisualElement src, VisualElement dest, Vector2 point)
{
return(dest.WorldToLocal(src.LocalToWorld(point)));
}
