Tao.SDL TTF fonts with SDL and C #
If we write text using TrueType fonts (the standard in Windows and Linux), the changes are not large:
We must include the DLL file in the folder called SDL_ttf.DLL our program executable and the TTF file for each type font you want to use. Wednesday, October 13, 2010
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We must declare a new data that will be our font, the generic type "IntPtr"
Then prepare the font you want to use, indicating which file from TTF and what size:
/ / A font in size 18
SdlTtf.TTF_OpenFont tipoDeLetra = ("FreeSansBold.ttf", 18); if (tipoDeLetra == IntPtr.Zero) {System.Console.WriteLine ("Type nonexistent letter: FreeSansBold.ttf! ");
Environment.Exit (5);}
Then we can create an image from a phrase
/ / And create an image from the text
Sdl.SDL_Color colorAzulIntenso = new Sdl.SDL_Color (50, 50, 255);
string text = "Sample text";Environment.Exit (6);}
textoComoImagen IntPtr = SdlTtf.TTF_RenderText_Solid (
tipoDeLetra text, colorAzulIntenso)
if (textoComoImagen == IntPtr.Zero) {
System.Console.WriteLine ("I can not render the text");
And we could draw that image anywhere on the screen, like any other image:
/ / Write the text, image source = new Sdl.SDL_Rect
(0.0, anchoPantalla, altoPantalla)
dest = new Sdl.SDL_Rect (200,100, anchoPantalla, altoPantalla)
Sdl.SDL_BlitSurface (textoComoImagen, ref origin
pantallaOculta, ref dest);
As this way of working can be cumbersome, soon we will improve, creating a class "source" that we hide all these details and allow us to easily write text.
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