netsurf/atari/gemtk/utils.c

#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <mt_gem.h>
#include "gemtk.h"

/* -------------------------------------------------------------------------- */
/* GEM Utillity functions:                                                    */
/* -------------------------------------------------------------------------- */

unsigned short _systype_v;
unsigned short _systype (void)
{
    int32_t * cptr = NULL;
    _systype_v = SYS_TOS;

    cptr = (int32_t *)Setexc(0x0168, -1L);
    if (cptr == NULL ) {
        return _systype_v;   /* stone old TOS without any cookie support */
    }
    while (*cptr) {
        if (*cptr == C_MgMc || *cptr == C_MgMx ) {
            _systype_v = (_systype_v & ~0xF) | SYS_MAGIC;
        } else if (*cptr == C_MiNT ) {
            _systype_v = (_systype_v & ~0xF) | SYS_MINT;
        } else if (*cptr == C_Gnva /* Gnva */ ) {
            _systype_v |= SYS_GENEVA;
        } else if (*cptr == C_nAES /* nAES */ ) {
            _systype_v |= SYS_NAES;
        }
        cptr += 2;
    }
    if (_systype_v & SYS_MINT) { /* check for XaAES */
        short out = 0, u;
        if (wind_get (0, (((short)'X') <<8)|'A', &out, &u,&u,&u) && out) {
            _systype_v |= SYS_XAAES;
        }
    }
    return _systype_v;
}

bool rc_intersect_ro(GRECT *a, GRECT *b)
{
    GRECT r1, r2;

    r1 = *a;
    r2 = *b;

    return((bool)rc_intersect(&r1, &r2));
}


typedef struct {
    char *unshift;
    char *shift;
    char *capslock;
} KEYTAB;

int keybd2ascii( int keybd, int shift)
{

    KEYTAB *key;
    key = (KEYTAB *)Keytbl( (char*)-1, (char*)-1, (char*)-1);
    return (shift)?key->shift[keybd>>8]:key->unshift[keybd>>8];
}


void gemtk_clip_grect(VdiHdl vh, GRECT *rect)
{
	PXY pxy[2];

	pxy[0].p_x = rect->g_x;
	pxy[0].p_y = rect->g_y;
	pxy[1].p_x = pxy[0].p_x + rect->g_w - 1;
	pxy[1].p_y = pxy[0].p_y + rect->g_h - 1;

	vs_clip_pxy(vh, pxy);
}