/// <summary>
/// Adds a new string to the text surface manager. This creates
/// the associated text surface so that text can be rendered with
/// a fast Blt rather than with a DrawText call. Note that caching
/// could be done in a much more efficient manner and some text
/// surfaces will have identical contents.
/// </summary>
/// <param name="key">The string to add.</param>
internal void Add(string key)
{
if (string.IsNullOrEmpty(key))
{
return;
}
var text = key;
if (text.Length > 16)
{
text = text.Substring(0, 16);
text += "...";
}
// Set up the surface
IGraphicsSurface ddSurface = GraphicsEngine.Current.CreateSurface(StandardFontRect.Right, StandardFontRect.Bottom);
ddSurface.TransparencyKey = new ColorKey(DirectDrawSurface.MagentaColorKey);
var rect = new Rectangle();
// Color in the back and add the text
ddSurface.BltColorFill(ref rect, DirectDrawSurface.MagentaColorKey.low);
ddSurface.SetForeColor(0);
using (var font = new Font("Verdana", 6.75f, FontStyle.Regular))
{
IntPtr dcHandle = ddSurface.GetDC();
using (var graphics = Graphics.FromHdc(dcHandle))
{
graphics.DrawString(text, font, Brushes.Black, 1, 1);
graphics.DrawString(text, font, Brushes.WhiteSmoke, 0, 0);
}
ddSurface.ReleaseDC(dcHandle);
}
sprites.Add(key, ddSurface);
}
