public static void DisplayMessage(Cube c, String msg, SiftColor color)
{
ImageSurface sr = new ImageSurface (Format.ARGB32, 128, 128);
Cairo.Context context = new Cairo.Context (sr);
context.Color = new Cairo.Color (0, 0, 0, 0);
context.Paint ();
Pango.Layout pango = Pango.CairoHelper.CreateLayout (context);
pango.FontDescription = Pango.FontDescription.FromString ("Arial 16");
pango.Alignment = Alignment.Center;
pango.Wrap = WrapMode.WordChar;
pango.Width = 128 * 1016;
pango.SetText (msg);
context.Color = color.ToCairo ();
int pWidth = 0, pHeight = 0;
pango.GetPixelSize (out pWidth, out pHeight);
Log.Debug ("pango Pixel size: " + pWidth + "x" + pHeight);
context.MoveTo (0, 64 - (pHeight / 2));
CairoHelper.ShowLayout (context, pango);
sr.Flush ();
byte[] data = sr.Data;
for (int i = 0, x = 0, y = 0; i < data.Length; i += 4, x++) {
if (x >= 128) {
x = 0;
y++;
}
byte b = data [i],
g = data [i + 1],
r = data [i + 2],
a = data [i + 3];
if (a != 0 || r != 0 || g != 0 || b != 0) {
SiftColor sc = new SiftColor (r, g, b);
c.FillRect (sc.ToSifteo (), x, y, 1, 1);
} else {
// we ignore it
}
}
((IDisposable)context).Dispose ();
((IDisposable)pango).Dispose ();
((IDisposable)sr).Dispose ();
}
private void ShowMessage(String[] affectedCubes, Dictionary<string, object> param)
{
String text_msg = JsonProtocolHelper.AssertTypeInDic<String> (
param,
"text_msg"
);
Dictionary<string, object> colors = JsonProtocolHelper.AssertTypeInDic<Dictionary<String, Object>> (param, "color");
SiftColor textColor = new SiftColor (colors);
BrowseCubes (delegate(Cube c) {
CubeScreenManager mgr = ScreenManagerLookup.getScreenManager (c);
mgr.WriteText (text_msg, textColor.ToSifteo ());
}, affectedCubes);
}
