UltraOptionSet Alignment | Infragistics Forums

Hi,

Okay, not I see why your question didn't make sense to me in the first place. Your OptionSet is only tall enough to show one item. The sample code I posted here is intended for an OptionSet where the items are displayed vertically. If you make the OptionSet in your sample taller, you will see that all of the items are centered.

To center everything like you seem to want is a lot more complex. You have to get all of the elements, figure out the total width needed, then offset each element.


public class MyUltraOptionSetCreationFilter : Infragistics.Win.IUIElementCreationFilter
    {
        #region IUIElementCreationFilter Members

        void Infragistics.Win.IUIElementCreationFilter.AfterCreateChildElements(Infragistics.Win.UIElement parent)
        {
            if (parent is Infragistics.Win.OptionSetEmbeddableUIElement)
            {
                int? left = null;
                int? right = null;

                foreach (Infragistics.Win.UIElement element in parent.ChildElements)
                {   
                    if (element is Infragistics.Win.OptionSetOptionButtonUIElement)
                    {
                        Rectangle rect = element.Rect;
                        if (left == null)
                            left = rect.Left;
                        else
                            left = Math.Min(left.Value, rect.Left);

                        if (right == null)
                            right = rect.Right;
                        else
                            right = Math.Max(right.Value, rect.Right);
                    }
                }

                if (left.HasValue && right.HasValue)
                {
                    int requiredWidth = right.Value - left.Value;
                    int availableWidth = parent.RectInsideBorders.Width;

                    int newLeft = (availableWidth - requiredWidth) / 2;
                    int offset = newLeft - left.Value;

                    if (offset != 0)
                    {                        
                        foreach (Infragistics.Win.UIElement element in parent.ChildElements)
                        {
                            element.Rect = new Rectangle(
                                element.Rect.X + offset,
                                element.Rect.Y,
                                element.Rect.Width,
                                element.Rect.Height);                                
                        }
                    }
                }
            }
        }

        bool Infragistics.Win.IUIElementCreationFilter.BeforeCreateChildElements(Infragistics.Win.UIElement parent)
        {
            return false;
        }

        #endregion
    }

public class MyUltraOptionSetCreationFilter : Infragistics.Win.IUIElementCreationFilter
    {
        #region IUIElementCreationFilter Members

        void Infragistics.Win.IUIElementCreationFilter.AfterCreateChildElements(Infragistics.Win.UIElement parent)
        {
            if (parent is Infragistics.Win.OptionSetEmbeddableUIElement)
            {
                int? left = null;
                int? right = null;

                foreach (Infragistics.Win.UIElement element in parent.ChildElements)
                {
                    if (element is Infragistics.Win.OptionSetOptionButtonUIElement)
                    {
                        Rectangle rect = element.Rect;
                        if (left == null)
                            left = rect.Left;
                        else
                            left = Math.Min(left.Value, rect.Left);

                        if (right == null)
                            right = rect.Right;
                        else
                            right = Math.Max(right.Value, rect.Right);
                    }
                }

                if (left.HasValue && right.HasValue)
                {
                    int requiredWidth = right.Value - left.Value;
                    int availableWidth = parent.RectInsideBorders.Width;

                    int newLeft = (availableWidth - requiredWidth) / 2;
                    int offset = newLeft - left.Value;

                    if (offset != 0)
                    {
                        foreach (Infragistics.Win.UIElement element in parent.ChildElements)
                        {
                            element.Rect = new Rectangle(
                                element.Rect.X + offset,
                                element.Rect.Y,
                                element.Rect.Width,
                                element.Rect.Height);
                        }
                    }
                }
            }
        }

        bool Infragistics.Win.IUIElementCreationFilter.BeforeCreateChildElements(Infragistics.Win.UIElement parent)
        {
            //Infragistics.Win.OptionSetOptionButtonUIElement optionSetOptionButtonUIElement = parent as Infragistics.Win.OptionSetOptionButtonUIElement;
            //if (optionSetOptionButtonUIElement != null)
            //{
            //    //optionSetOptionButtonUIElement.Rect = new Rectangle(parent.Rect.X, parent.Rect.Y + 1, parent.Rect.Width - 2, optionSetOptionButtonUIElement.Rect.Height - 1);
            //    optionSetOptionButtonUIElement.CheckAlign = ContentAlignment.MiddleLeft;
            //    optionSetOptionButtonUIElement.TextHAlign = Infragistics.Win.HAlign.Center;
            //}

            return false;
        }

        #endregion
    }

It works like charm....

It works like charm....