static bool WasSelectableDescendantHitByMouse(GraphElement currentTarget, MouseDownEvent evt)
{
VisualElement targetElement = evt.target as VisualElement;
if (targetElement == null || currentTarget == targetElement)
{
return(false);
}
VisualElement descendant = targetElement;
while (descendant != null && currentTarget != descendant)
{
GraphElement selectableDescendant = descendant as GraphElement;
if (selectableDescendant != null && selectableDescendant.enabledInHierarchy && selectableDescendant.pickingMode != PickingMode.Ignore && selectableDescendant.IsSelectable())
{
Vector2 localMousePosition = currentTarget.ChangeCoordinatesTo(descendant, evt.localMousePosition);
if (selectableDescendant.HitTest(localMousePosition))
{
return(true);
}
}
descendant = descendant.parent;
}
return(false);
}
Rect CalculateElementRect(GraphElement elem)
{
Rect rect = elem.ChangeCoordinatesTo(graphView.contentViewContainer, elem.GetRect());
rect.x = m_ContentRect.x + ((rect.x - m_ContentRectLocal.x) * m_ContentRect.width / m_ContentRectLocal.width);
rect.y = m_ContentRect.y + ((rect.y - m_ContentRectLocal.y) * m_ContentRect.height / m_ContentRectLocal.height);
rect.width *= m_ContentRect.width / m_ContentRectLocal.width;
rect.height *= m_ContentRect.height / m_ContentRectLocal.height;
// Clip using a minimal 2 pixel wide frame around edges
// (except yMin since we already have the titleBar offset which is enough for clipping)
var xMin = 2;
var yMin = windowed ? 2 : 0;
var xMax = layout.width - 2;
var yMax = layout.height - 2;
if (rect.x < xMin)
{
if (rect.x < xMin - rect.width)
{
return(new Rect(0, 0, 0, 0));
}
rect.width -= xMin - rect.x;
rect.x = xMin;
}
if (rect.x + rect.width >= xMax)
{
if (rect.x >= xMax)
{
return(new Rect(0, 0, 0, 0));
}
rect.width -= rect.x + rect.width - xMax;
}
if (rect.y < yMin + titleBarOffset)
{
if (rect.y < yMin + titleBarOffset - rect.height)
{
return(new Rect(0, 0, 0, 0));
}
rect.height -= yMin + titleBarOffset - rect.y;
rect.y = yMin + titleBarOffset;
}
if (rect.y + rect.height >= yMax)
{
if (rect.y >= yMax)
{
return(new Rect(0, 0, 0, 0));
}
rect.height -= rect.y + rect.height - yMax;
}
return(rect);
}