C++ (Cpp) caca_canvas_set_figfont Examples

Example #1

File: canvas.c Project: mwgoldsmith/caca

/** \brief Free a \e libcaca canvas.
 *
 *  Free all resources allocated by caca_create_canvas(). The canvas
 *  pointer becomes invalid and must no longer be used unless a new call
 *  to caca_create_canvas() is made.
 *
 *  If an error occurs, -1 is returned and \b errno is set accordingly:
 *  - \c EBUSY The canvas is in use by a display driver and cannot be freed.
 *
 *  \param cv A libcaca canvas.
 *  \return 0 in case of success, -1 if an error occurred.
 */
int caca_free_canvas(caca_canvas_t *cv)
{
    int f;

    if(cv->refcount)
    {
        seterrno(EBUSY);
        return -1;
    }

    for(f = 0; f < cv->framecount; f++)
    {
        free(cv->frames[f].chars);
        free(cv->frames[f].attrs);
        free(cv->frames[f].name);
    }

    caca_canvas_set_figfont(cv, NULL);

    free(cv->frames);
    free(cv);

    return 0;
}

Example #2

File: cacaclock.c Project: gitpan/Term-Caca

int main(int argc, char *argv[]) {

	caca_canvas_t *cv;
	caca_canvas_t *figcv;
	caca_display_t *dp;
	uint32_t w, h, fw, fh;

	char *format = "%R:%S"; 
	char *font   = "/usr/share/figlet/mono12.tlf";


	for(;;)
	{
		int option_index = 0;
		static struct caca_option long_options[] =
		{
			{ "font",        1, NULL, 'f' },
			{ "dateformat",  1, NULL, 'd' },
			{ "help",        0, NULL, 'h' },
			{ "version",     0, NULL, 'v' },
		};
		int c = caca_getopt(argc, argv, "f:d:hv",
				long_options, &option_index);
		if(c == -1)
			break;

		switch(c)
		{
			case 'h': /* --help       */
				usage(argc, argv);
				return 0;
				break;
			case 'v': /* --version    */
				version();
				return 0;
				break;
			case 'f': /* --font       */
				font = caca_optarg;
				break;
			case 'd': /* --dateformat */
				format = caca_optarg;
				break;
			default:
				return 1;
				break;
		}
	}



	cv = caca_create_canvas(0, 0);
	figcv = caca_create_canvas(0, 0);
	if(!cv || !figcv)
	{  
		fprintf(stderr, "%s: unable to initialise libcaca\n", argv[0]);
		return 1;
	}

	if(caca_canvas_set_figfont(figcv, font))
	{  
		fprintf(stderr, "Could not open font\n");
		return -1;
	}


	dp = caca_create_display(cv);
	if(!dp) {
		printf("Can't open window. CACA_DRIVER problem ?\n");
		return -1;
	}

	caca_set_color_ansi(figcv, CACA_DEFAULT, CACA_DEFAULT);
	caca_clear_canvas(cv);
	for(;;) {
		caca_event_t ev;

		while(caca_get_event(dp, CACA_EVENT_KEY_PRESS
					| CACA_EVENT_QUIT, &ev, 1))
		{  
			if(caca_get_event_type(&ev))
				goto end;
		}
		char *d = get_date(format);
		uint32_t o = 0;

		// figfont API is not complete, and does not allow us to put a string
		// at another position than 0,0
		// So, we have to create a canvas which will hold the figfont string,
		// then blit this canvas to the main one at the desired position.
		caca_clear_canvas(cv);
		caca_clear_canvas(figcv);
		while(d[o])
		{  
			caca_put_figchar(figcv, d[o++]);
		}
		caca_flush_figlet (figcv);
		free(d);

		w = caca_get_canvas_width (cv);
		h = caca_get_canvas_height(cv);
        fw = caca_get_canvas_width (figcv);
		fh = caca_get_canvas_height(figcv);	

		uint32_t x = (w/2) - (fw/2);
		uint32_t y = (h/2) - (fh/2);

		caca_blit(cv, x, y, figcv, NULL);
		caca_refresh_display(dp);
		usleep(250000);
	}
end:

	caca_free_canvas(figcv);
	caca_free_canvas(cv);
	caca_free_display(dp);

	return 0;
}