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TI Nspire specific functions and macros

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Christoffer Rehn edited this page May 11, 2014 · 61 revisions

These functions and macros are not part of standard SDL. As such, they are not portable across different platforms.

Functions

Type Function Description 
SDL_Surface *
 
nSDL_LoadImage
(Uint16 *data)
 Loads an NTI image. Returns NULL on error, a pointer to a 16-bit surface of the image on success. 
nSDL_Font *
 
nSDL_LoadFont
(int font_index,
 Uint8 r, Uint8 g, Uint8 b)
 Loads a font. Returns NULL on error. For a list of available fonts, click here. 
int
 
nSDL_DrawString
(SDL_Surface *surface,
 nSDL_Font *font,
 int x, int y,
 const char *format, ...)
 Draws a string to surface. Supports printf-like string formatting. Returns -1 on error, 0 on success. 
int
 
nSDL_GetStringWidth
(nSDL_Font *font,
 const char *s)
 Returns the width of a string, or a negative value on error. 
int
 
nSDL_GetStringHeight
(nSDL_Font *font,
 const char *s)
 Returns the height of a string, or a negative value on error. 
void
 
nSDL_EnableFontMonospaced
(nSDL_Font *font,
 SDL_bool toggle)
 Enables or disables fixed font spacing. 
void
 
nSDL_SetFontSpacing
(nSDL_Font *font,
 int hspacing, int vspacing)
 Sets horizontal and vertical font spacing. 
void
 
nSDL_FreeFont
(nSDL_Font *font)
 Frees a font from memory. 
int
 
nSDL_EnableRelativePaths
(char **argv)
 Enables the use of relative paths whenever loading files. 
Uint32
 
nSDL_GetPixel
(SDL_Surface *surface,
 int x, int y)
 Returns the pixel's color at (x, y). Assumes the surface has been locked. Does no clipping. Supports 8-, 16- and 32-bit surfaces. 
void
 
nSDL_SetPixel
(SDL_Surface *surface,
 int x, int y,
 Uint32 color)
 Draws a pixel to (x, y). Assumes the surface has been locked. Does no clipping. Supports 8-, 16- and 32-bit surfaces.

Macros

Name Description 
NSDL_VERSION
 String containing nSDL's version.
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