internal override void PrepareForSave()
{
base.PrepareForSave();
//set or update the default appearance stream
string textAppearanceStream = string.Format("/{0} {1:0.##} Tf", Font.FamilyName, Font.Size);
string colorStream = string.Empty;
switch (ForeColor.ColorSpace)
{
case XColorSpace.Rgb:
colorStream = string.Format("{0:0.#} {1:0.#} {2:0.#} rg", ForeColor.R / 255d, ForeColor.G / 255d, ForeColor.B / 255);
break;
case XColorSpace.GrayScale:
colorStream = string.Format("{0:0.#} g", ForeColor.GS);
break;
}
var mk = Elements.GetDictionary(PdfWidgetAnnotation.Keys.MK);
if (mk == null && (BorderColor != XColor.Empty || BackColor != XColor.Empty))
{
mk = new PdfDictionary(_document);
Elements.SetObject(PdfWidgetAnnotation.Keys.MK, mk);
}
if (BorderColor != XColor.Empty)
{
var bc = BorderColor.ToArray();
mk.Elements.SetObject("/BC", bc);
}
else if (mk != null && mk.Elements.ContainsKey("/BC"))
{
mk.Elements.Remove("/BC");
}
if (BackColor != XColor.Empty)
{
var bg = BackColor.ToArray();
mk.Elements.SetObject("/BG", bg);
}
else if (mk != null && mk.Elements.ContainsKey("/BG"))
{
mk.Elements.Remove("/BG");
}
Elements.SetString(Keys.DA, textAppearanceStream + " " + colorStream);
}