public void Activate(VisualElement hierarchyParentElement, int hierarchyIndex)
{
Reset();
if (hierarchyParentElement.childCount == 0 || hierarchyParentElement == documentRootElement)
{
return;
}
var mouseOverElement = hierarchyIndex > -1 && hierarchyIndex < hierarchyParentElement.childCount - 1
? hierarchyParentElement.ElementAt(hierarchyIndex)
: hierarchyParentElement.ElementAt(hierarchyParentElement.childCount - 1);
var mouseOverElementCanvasRect = BuilderTracker.GetRelativeRectFromTargetElement(mouseOverElement, this.hierarchy.parent);
var shouldGoLast = hierarchyIndex >= hierarchyParentElement.childCount;
var isRow =
hierarchyParentElement.resolvedStyle.flexDirection == FlexDirection.Row ||
hierarchyParentElement.resolvedStyle.flexDirection == FlexDirection.RowReverse;
var reverseOrder =
hierarchyParentElement.resolvedStyle.flexDirection == FlexDirection.ColumnReverse ||
hierarchyParentElement.resolvedStyle.flexDirection == FlexDirection.RowReverse;
if (isRow)
{
if (!reverseOrder && !shouldGoLast)
{
style.top = mouseOverElementCanvasRect.y;
style.left = mouseOverElementCanvasRect.x - k_IndicatorHalfSize;
style.width = k_IndicatorSize;
style.height = mouseOverElementCanvasRect.height;
}
else if (reverseOrder || shouldGoLast)
{
style.top = mouseOverElementCanvasRect.y;
style.left = mouseOverElementCanvasRect.xMax - k_IndicatorHalfSize;
style.width = k_IndicatorSize;
style.height = mouseOverElementCanvasRect.height;
}
}
else if (!isRow)
{
if (!reverseOrder && !shouldGoLast)
{
style.top = mouseOverElementCanvasRect.y - k_IndicatorHalfSize;
style.left = mouseOverElementCanvasRect.x;
style.width = mouseOverElementCanvasRect.width;
style.height = k_IndicatorSize;
}
else if (reverseOrder || shouldGoLast)
{
style.top = mouseOverElementCanvasRect.yMax - k_IndicatorHalfSize;
style.left = mouseOverElementCanvasRect.x;
style.width = mouseOverElementCanvasRect.width;
style.height = k_IndicatorSize;
}
}
else
{
return;
}
style.display = DisplayStyle.Flex;
}
public void Activate(VisualElement mouseOverElement, Vector2 mousePosition)
{
Reset();
parentElement = mouseOverElement;
if (mouseOverElement == documentRootElement)
{
return;
}
var mouseOverElementMouse = mouseOverElement.WorldToLocal(mousePosition);
var mouseOverElementRect = mouseOverElement.rect;
var mouseOverElementCanvasRect = BuilderTracker.GetRelativeRectFromTargetElement(mouseOverElement, this.hierarchy.parent);
var isCloseToLeftEdge = mouseOverElementMouse.x < k_DistanceFromElementEdge;
var isCloseToRightEdge = mouseOverElementMouse.x > mouseOverElementRect.xMax - k_DistanceFromElementEdge;
var isCloseToTopEdge = mouseOverElementMouse.y < k_DistanceFromElementEdge;
var isCloseToBottomEdge = mouseOverElementMouse.y > mouseOverElementRect.yMax - k_DistanceFromElementEdge;
var reverseOrder =
mouseOverElement.parent.resolvedStyle.flexDirection == FlexDirection.ColumnReverse ||
mouseOverElement.parent.resolvedStyle.flexDirection == FlexDirection.RowReverse;
int indexOffset;
if (isCloseToLeftEdge)
{
style.top = mouseOverElementCanvasRect.y;
style.left = mouseOverElementCanvasRect.x - k_IndicatorHalfSize;
style.width = k_IndicatorSize;
style.height = mouseOverElementCanvasRect.height;
indexOffset = reverseOrder ? 1 : 0;
}
else if (isCloseToRightEdge)
{
style.top = mouseOverElementCanvasRect.y;
style.left = mouseOverElementCanvasRect.xMax - k_IndicatorHalfSize;
style.width = k_IndicatorSize;
style.height = mouseOverElementCanvasRect.height;
indexOffset = reverseOrder ? 0 : 1;
}
else if (isCloseToTopEdge)
{
style.top = mouseOverElementCanvasRect.y - k_IndicatorHalfSize;
style.left = mouseOverElementCanvasRect.x;
style.width = mouseOverElementCanvasRect.width;
style.height = k_IndicatorSize;
indexOffset = reverseOrder ? 1 : 0;
}
else if (isCloseToBottomEdge)
{
style.top = mouseOverElementCanvasRect.yMax - k_IndicatorHalfSize;
style.left = mouseOverElementCanvasRect.x;
style.width = mouseOverElementCanvasRect.width;
style.height = k_IndicatorSize;
indexOffset = reverseOrder ? 0 : 1;
}
else
{
return;
}
style.display = DisplayStyle.Flex;
parentElement = mouseOverElement.parent;
indexWithinParent = parentElement.IndexOf(mouseOverElement) + indexOffset;
}
