NSMenuItem CreateItem(object dataItem, int row)
{
var h = Handler;
var item = new NSMenuItem();
var title = h.Widget.ItemTextBinding?.GetValue(dataItem) ?? string.Empty;
item.Image = h.Widget.ItemImageBinding?.GetValue(dataItem).ToNS();
if (h.IsEventHandled(DropDown.FormatItemEvent))
{
var args = new DropDownFormatEventArgs(dataItem, row, h.Font);
h.Callback.OnFormatItem(h.Widget, args);
if (args.IsFontSet && args.Font != null)
{
var attr = new NSMutableAttributedString(title);
var font = args.Font.ToNS();
var range = new NSRange(0, attr.Length);
attr.AddAttribute(NSStringAttributeKey.Font, font, range);
item.AttributedTitle = attr;
}
else
{
item.Title = title;
}
}
else
{
item.Title = title;
}
return(item);
}
protected override void OnDrawItem(swf.DrawItemEventArgs e)
{
if (e.State.HasFlag(swf.DrawItemState.ComboBoxEdit))
{
var bounds = e.Bounds;
bounds.Inflate(2, 2);
// only show the background color for the drop down, not for each item
e.Graphics.FillRectangle(new sd.SolidBrush(BackColor), bounds);
}
else
{
e.DrawBackground();
}
if (e.Index >= 0)
{
var item = Items[e.Index];
var bounds = e.Bounds;
var etoitem = item as EtoComboBoxItem;
var image = etoitem?.Image;
if (image != null)
{
e.Graphics.DrawImage(image.ToSD(new Size(16, 16)), bounds.X, bounds.Y, 16, 16);
bounds.X += 18;
bounds.Width -= 18;
}
string text = item?.ToString();
var font = Font;
if (FormatItem != null)
{
var args = new DropDownFormatEventArgs(etoitem.Value, e.Index, font.ToEto());
FormatItem.Invoke(this, args);
font = args.Font.ToSD();
}
// Determine the forecolor based on whether or not the item is selected
swf.TextRenderer.DrawText(e.Graphics, text, font, bounds, ForeColor, swf.TextFormatFlags.Left);
}
e.DrawFocusRectangle();
}