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#include <stdio.h>
#include <stdarg.h>
#include <emx/syscalls.h>
#include <sys/video.h>
#include "libemx.h"
static int cursor_start = 0, cursor_end = 0;
static int gx = 0, gy = 0, gxx = 79, gyy = 24;
static char buf[4096];
void init_emx()
{
v_init();
v_getctype(&cursor_start, &cursor_end);
}
void deinit_emx()
{
// nothing to do
}
void _setcursortype(int curstype)
{
if ( curstype == _NOCURSOR )
v_hidecursor();
else
v_ctype(cursor_start, cursor_end);
}
void clrscr()
{
if ( (gx == 0) && (gy == 0) && (gxx == 79) && (gyy == 24) )
{
v_clear();
v_gotoxy(0, 0);
}
else
{
for (int i = gy; i <= gyy; ++i)
{
v_gotoxy(gx, i);
v_putn(' ', gxx - gx + 1);
}
v_gotoxy(gx, gy);
}
}
void gotoxy(int x, int y)
{
v_gotoxy(x - 1 + gx, y - 1 + gy);
}
void textcolor(int c)
{
v_attrib(c);
}
static void cprintf_aux(const char *s)
{
char *ptr = buf;
while (*s)
{
if ( *s == '\n' )
{
*ptr = 0;
v_puts(buf);
int x, y;
v_getxy(&x, &y);
if ( y != 24 )
v_gotoxy(gx, y + 1);
else
v_putc('\n');
ptr = buf;
}
else if ( *s != '\r' )
*ptr++ = *s;
++s;
}
*ptr = 0;
v_puts(buf);
}
void cprintf(const char *format, ...)
{
va_list argp;
char buffer[4096]; // one could hope it's enough
va_start( argp, format );
vsprintf(buffer, format, argp);
cprintf_aux(buffer);
va_end(argp);
}
void puttext(int x, int y, int lx, int ly, unsigned const char *buf)
{
puttext(x, y, lx, ly, (const char *) buf);
}
void puttext(int x, int y, int lx, int ly, const char *buf)
{
int count = (lx - x + 1);
for (int i = y - 1; i < ly; ++i)
{
v_putline(buf + 2 * count * i, x - 1, i, count);
}
}
void gettext(int x, int y, int lx, int ly, unsigned char *buf)
{
gettext(x, y, lx, ly, (char *) buf);
}
void gettext(int x, int y, int lx, int ly, char *buf)
{
int count = (lx - x + 1);
for (int i = y - 1; i < ly; ++i)
{
v_getline(buf + 2 * count * i, x - 1, i, count);
}
}
void window(int x, int y, int lx, int ly)
{
gx = x - 1;
gy = y - 1;
gxx = lx - 1;
gyy = ly - 1;
}
int wherex()
{
int x, y;
v_getxy(&x, &y);
return x + 1 - gx;
}
int wherey()
{
int x, y;
v_getxy(&x, &y);
return y + 1 - gy;
}
void putch(char c)
{
v_putc(c);
}
int kbhit()
{
return 0;
}
void delay(int ms)
{
__sleep2(ms);
}
void textbackground(int c)
{
if ( c != 0 )
{
fprintf(stderr, "bad background=%d", c);
exit(1);
}
}
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