protected override GameObject Install(GameObject go, GridLayoutElement element, IReadOnlyLayoutContext context)
{
var gridLayout = go.AddComponent <GridLayoutGroup>();
if (!string.IsNullOrEmpty(element.Spacing))
{
gridLayout.spacing = context.ParseVector2(element.Spacing);
}
if (!string.IsNullOrEmpty(element.CellSize))
{
gridLayout.cellSize = context.ParseVector2(element.CellSize);
}
else
{
gridLayout.cellSize = Vector2.one * 250;
}
if (!string.IsNullOrEmpty(element.Padding))
{
var padding = context.ParsePadding(element.Padding);
gridLayout.padding.top = (int)padding.x;
gridLayout.padding.right = (int)padding.y;
gridLayout.padding.bottom = (int)padding.z;
gridLayout.padding.left = (int)padding.w;
}
if (string.IsNullOrEmpty(element.Align))
{
element.Align = "left";
}
if (string.IsNullOrEmpty(element.VertAlign))
{
element.VertAlign = "top";
}
var alignment = ParseUtils.ParseAlignment(element.Align, element.VertAlign);
if (alignment.HasValue)
{
gridLayout.childAlignment = alignment.Value;
}
if (!string.IsNullOrEmpty(element.Rows) &&
!string.IsNullOrEmpty(element.Columns))
{
Debug.LogError($"You cannot set both ROWS and COLS in GridLayout!");
}
else if (!string.IsNullOrEmpty(element.Rows))
{
gridLayout.constraint = GridLayoutGroup.Constraint.FixedRowCount;
gridLayout.constraintCount = context.ParseInt(element.Rows);
}
else if (!string.IsNullOrEmpty(element.Columns))
{
gridLayout.constraint = GridLayoutGroup.Constraint.FixedColumnCount;
gridLayout.constraintCount = context.ParseInt(element.Columns);
}
else
{
gridLayout.constraint = GridLayoutGroup.Constraint.Flexible;
}
if (!string.IsNullOrEmpty(element.Axis))
{
gridLayout.startAxis = (element.Axis == "vertical")
? GridLayoutGroup.Axis.Vertical
: GridLayoutGroup.Axis.Horizontal;
}
if (!string.IsNullOrEmpty(element.FitSize))
{
var fitsize = context.ParseString(element.FitSize);
var fitter = go.AddComponent <ContentSizeFitter>();
fitter.verticalFit = fitsize == "both" || fitsize == "vertical" ? ContentSizeFitter.FitMode.PreferredSize : ContentSizeFitter.FitMode.Unconstrained;
fitter.horizontalFit = fitsize == "both" || fitsize == "horizontal" ? ContentSizeFitter.FitMode.PreferredSize : ContentSizeFitter.FitMode.Unconstrained;
}
return(go);
}
private static GameObject CreateElement(RectTransformElement element, Transform parent, IReadOnlyLayoutContext context, out GameObject newParent)
{
GameObject go = null;
List <RectTransformElement> originalElements = null;
while (element is PrefabElement prefab)
{
var prefabElement = context.GetPrefab(prefab.Prefab);
if (prefabElement != null)
{
if (originalElements == null)
{
originalElements = new List <RectTransformElement>();
}
originalElements.Add(element);
element = prefabElement.Content.Elements[0] as RectTransformElement;
}
}
if (element is GameObjectElement gameobject)
{
go = PrefabUtility.InstantiatePrefab(context.GetAsset <GameObject>(gameobject.Path)) as GameObject;
go.name = element.Name;
}
else
{
go = new GameObject(element.Name);
}
go.transform.parent = parent;
go.transform.localScale = Vector3.one;
go.AddComponent <ExternalLayoutWarning>();
newParent = go;
if (element.Active == "false")
{
go.SetActive(false);
}
var rect = go.GetComponent <RectTransform>();
if (rect == null)
{
rect = go.AddComponent <RectTransform>();
}
if (!string.IsNullOrEmpty(element.Padding))
{
var padding = context.ParsePadding(element.Padding);
GameObject padder = new GameObject();
padder.name = $"Padding ({go.name})";
padder.transform.parent = rect;
padder.transform.localScale = Vector3.one;
rect = padder.AddComponent <RectTransform>();
rect.anchorMin = Vector2.zero;
rect.anchorMax = Vector2.one;
rect.offsetMin = new Vector2(padding.w, padding.z);
rect.offsetMax = new Vector2(-padding.y, -padding.x);
newParent = padder;
}
ApplyTransformSettings(element, parent, context, go);
if (originalElements != null)
{
for (int i = originalElements.Count - 1; i >= 0; --i)
{
var originalElement = originalElements[i];
ApplyTransformSettings(originalElement, parent, context, go);
if (!string.IsNullOrEmpty(originalElement.Name))
{
go.name = originalElement.Name;
}
}
}
return(go);
}
