internal static bool FoldoutHeaderGroupInternal(Rect position, bool foldout, string label, Texture2D background, Color backgroundColor, string additionalLabel = "")
{
GUIStyle foldoutStyle = EditorStyles.titlebarFoldout;
var offset = 18;
position.x += offset;
// add some spaces so that we could draw a colored texture before the label
label = $" {label}";
GUIContent content = new GUIContent(label);
// Removing the default margin for inspectors
if (EditorGUIUtility.hierarchyMode)
{
position.xMin -= EditorStyles.inspectorDefaultMargins.padding.left - EditorStyles.inspectorDefaultMargins.padding.right;
position.xMax += EditorStyles.inspectorDefaultMargins.padding.right;
}
var labelSize = GUI.skin.label.CalcSize(new GUIContent(additionalLabel));
Rect menuRect = new Rect
{
x = position.xMax - foldoutStyle.padding.right - labelSize.x - offset,
y = position.y + 2,
size = labelSize
};
int id = GUIUtility.GetControlID(s_FoldoutHeaderHash, FocusType.Keyboard, position);
if (Event.current.type == EventType.KeyDown && GUIUtility.keyboardControl == id)
{
KeyCode kc = Event.current.keyCode;
if (kc == KeyCode.LeftArrow && foldout || (kc == KeyCode.RightArrow && foldout == false))
{
foldout = !foldout;
GUI.changed = true;
Event.current.Use();
}
}
else
{
foldout = EditorGUIInternal.DoToggleForward(position, id, foldout, content, foldoutStyle);
}
if (additionalLabel != null && Event.current.type == EventType.Repaint && labelSize.x < Screen.width * 0.8f)
{
GUI.Label(menuRect, additionalLabel);
menuRect.x = 24 + offset;
menuRect.y += 1;
menuRect.width = menuRect.height = 16;
GUI.DrawTexture(menuRect, background, ScaleMode.ScaleToFit, true, 1, backgroundColor, Vector4.zero, Vector4.one * 2, true);
}
return(foldout);
}
public static bool BeginFoldoutHeaderGroup(Rect position, bool foldout, GUIContent content, [DefaultValue("EditorStyles.foldoutHeader")] GUIStyle style = null, Action <Rect> menuAction = null, GUIStyle menuIcon = null)
{
// Removing the default margin for inspectors
if (EditorGUIUtility.hierarchyMode)
{
position.xMin -= EditorStyles.inspectorDefaultMargins.padding.left - EditorStyles.inspectorDefaultMargins.padding.right;
position.xMax += EditorStyles.inspectorDefaultMargins.padding.right;
}
if (style == null)
{
style = EditorStyles.foldoutHeader;
}
if (s_FoldoutHeaderGroupActive)
{
EditorGUI.HelpBox(position, L10n.Tr("You can't nest Foldout Headers, end it with EndHeaderFoldoutGroup."), MessageType.Error);
return(false);
}
s_FoldoutHeaderGroupActive = true;
const float iconSize = 16;
Rect menuRect = new Rect
{
x = position.xMax - style.padding.right - iconSize,
y = position.y + style.padding.top,
size = Vector2.one * iconSize
};
bool menuIconHover = menuRect.Contains(Event.current.mousePosition);
bool menuIconActive = (menuIconHover && Event.current.type == EventType.MouseDown && Event.current.button == 0);
if (menuAction != null && menuIconActive)
{
menuAction.Invoke(menuRect);
Event.current.Use();
}
int id = GUIUtility.GetControlID(s_FoldoutHeaderHash, FocusType.Keyboard, position);
if (Event.current.type == EventType.KeyDown && GUIUtility.keyboardControl == id)
{
KeyCode kc = Event.current.keyCode;
if (kc == KeyCode.LeftArrow && foldout || (kc == KeyCode.RightArrow && foldout == false))
{
foldout = !foldout;
GUI.changed = true;
Event.current.Use();
}
}
else
{
foldout = EditorGUIInternal.DoToggleForward(position, id, foldout, content, style);
}
// Menu icon
if (menuAction != null && Event.current.type == EventType.Repaint)
{
if (menuIcon == null)
{
menuIcon = EditorStyles.foldoutHeaderIcon;
}
menuIcon.Draw(menuRect, menuIconHover, menuIconActive, false, false);
}
return(foldout);
}