/// <summary>
/// Create "ui" node. If children supported - GameObject container for them should be returned.
/// </summary>
/// <param name="widget">Ui widget.</param>
/// <param name="node">Xml node.</param>
/// <param name="container">Markup container.</param>
public static RectTransform Create(RectTransform widget, XmlNode node, MarkupContainer container)
{
#if UNITY_EDITOR
widget.name = "ui";
#endif
var go = widget.gameObject;
var canvas = go.AddComponent <Canvas> ();
Camera uiCamera = null;
if (Application.isPlaying)
{
canvas.renderMode = RenderMode.ScreenSpaceCamera;
uiCamera = MarkupUtils.GetUiCamera();
canvas.worldCamera = uiCamera;
}
else
{
canvas.renderMode = RenderMode.ScreenSpaceOverlay;
}
canvas.planeDistance = 0f;
canvas.pixelPerfect = false;
var pixelSize = 1f;
var dragTreshold = 5;
var scaler = go.AddComponent <CanvasScaler> ();
var attrValue = node.GetAttribute(HashedBase);
if (attrValue != null)
{
var refWidth = 1024;
var refHeight = 768;
var refBalance = 1f;
try {
var parts = MarkupUtils.SplitAttrValue(attrValue);
var w = int.Parse(parts[0]);
var h = int.Parse(parts[1]);
var b = Mathf.Clamp01(float.Parse(parts[2], NumberFormatInfo.InvariantInfo));
refWidth = w;
refHeight = h;
refBalance = b;
} catch { }
scaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
scaler.referenceResolution = new Vector2(refWidth, refHeight);
scaler.matchWidthOrHeight = refBalance;
if (Application.isPlaying)
{
if (refBalance < 1f)
{
Debug.LogWarning("Only height-based balance supported");
}
uiCamera.orthographicSize = refHeight * 0.5f;
pixelSize = MathFast.Lerp(Screen.width / (float)refWidth, Screen.height / (float)refHeight, refBalance);
}
else
{
pixelSize = 1f;
}
}
attrValue = node.GetAttribute(HashedDragTreshold);
if (attrValue != null)
{
if (int.TryParse(attrValue, NumberStyles.Float, NumberFormatInfo.InvariantInfo, out dragTreshold))
{
dragTreshold = Mathf.Max(1, dragTreshold);
}
}
attrValue = node.GetAttribute(MarkupUtils.HashedNav);
var disableNav = string.CompareOrdinal(attrValue, "false") == 0;
container.PixelSize = pixelSize;
container.DragTreshold = dragTreshold * pixelSize;
container.UseNavigation = !disableNav;
go.AddComponent <GraphicRaycaster> ();
if (Application.isPlaying)
{
var es = Object.FindObjectOfType <EventSystem> ();
if ((object)es == null)
{
es = new GameObject("EventSystem").AddComponent <EventSystem> ();
es.gameObject.AddComponent <StandaloneInputModule> ();
}
}
return(widget);
}