public override void CalcLargeButtonViewInfo(GraphicsCache cache, RibbonItemViewInfo item)
{
Rectangle glyph, bounds = item.Bounds;
SkinElementInfo info = GetLargeButtonElementInfo(item);
info.Bounds = bounds;
Rectangle client = ObjectPainter.GetObjectClientRectangle(cache, SkinElementPainter.Default, info);
glyph = client;
glyph.Size = (ViewInfo as CustomRibbonViewInfo).LargeImageSize;
glyph.X += (client.Width - glyph.Width) / 2;
item.GlyphBounds = glyph;
IRibbonGroupInfo groupInfo = item.Owner as IRibbonGroupInfo;
Rectangle caption = client;
caption.Height = GetLargeButtonTextHeight(groupInfo != null && groupInfo.IsSingleLineLargeButton);
caption.Y = client.Bottom - caption.Height;
item.CaptionBounds = caption;
}