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/** \file server/drivers/lcd_lib.c
* LCD library of useful functions for drivers.
*
* Drawn from the "base driver" which really was the precursor
* to this library.
*
* \todo Make use of the \c options parameter to specify SEAMLESS_HBARS,
* the height of hbars, etc.
*/
#include "lcd.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
/**
* This function places a hbar using the v0.5 API format and the given cellwidth.
* It assumes that custom chars have been statically defined, so that number
* 1 has 1 pixel, number 2 has 2 etc.
*
* LCDs that have the custom chars at other char numbers than 0 should put the
* first custom char number in cc_offset.
*/
void
lib_hbar_static (Driver *drvthis, int x, int y, int len, int promille, int options, int cellwidth, int cc_offset)
{
int total_pixels = ((long) 2 * len * cellwidth + 1 ) * promille / 2000;
int pos;
for (pos = 0; pos < len; pos ++ ) {
int pixels = total_pixels - cellwidth * pos;
if ( pixels >= cellwidth ) {
/* write a "full" block to the screen... */
#if defined(SEAMLESS_HBARS)
drvthis->chr (drvthis, x+pos, y, cellwidth + cc_offset);
#else
drvthis->icon (drvthis, x+pos, y, ICON_BLOCK_FILLED);
#endif
}
else if ( pixels > 0 ) {
/* write a partial block... */
drvthis->chr (drvthis, x+pos, y, pixels + cc_offset);
break;
}
else {
; /* write nothing (not even a space) */
}
}
}
/**
* This function places a vbar using the v0.5 API format and the given cellwidth.
* It assumes that custom chars have been statically defined, so that number
* 1 has 1 pixel, number 2 has 2 etc., just like in good old times.
*
* LCDs that have the custom chars at other char numbers than 0 should put the
* first custom char number in cc_offset.
*/
void
lib_vbar_static (Driver *drvthis, int x, int y, int len, int promille, int options, int cellheight, int cc_offset)
{
int total_pixels = ((long) 2 * len * cellheight + 1 ) * promille / 2000;
int pos;
for (pos = 0; pos < len; pos ++ ) {
int pixels = total_pixels - cellheight * pos;
if ( pixels >= cellheight ) {
/* write a "full" block to the screen... */
drvthis->icon (drvthis, x, y-pos, ICON_BLOCK_FILLED);
}
else if ( pixels > 0 ) {
/* write a partial block... */
drvthis->chr (drvthis, x, y-pos, pixels + cc_offset);
break;
}
else {
; /* write nothing (not even a space) */
}
}
}
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