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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "io.h"
#include "dat.h"
#include "fns.h"
#include <draw.h>
#include <memdraw.h>
#include "screen.h"
extern Video *vid;
extern Memimage gscreen;
static Vctlr* init(Vctlr* vctlr, int x, int y, int d);
static int setcolour(ulong p, ulong r, ulong g, ulong b);
static void enable(void);
static void disable(void);
static void move(int cx, int cy);
static void load(Cursor *c);
static int isloaded(void);
extern void* memcpy(void*, void*, int);
extern void cursorupdate0(void);
Vctlr FSV = {
"FSV", /* name */
init, /* init */
0, /* page */
setcolour, /* setcolor */
enable, /* enable cursor fn */
disable, /* disable cursor fn */
move, /* move cursor fn */
load, /* load cursor fn */
isloaded, /* is cursor loaded? */
0, /* deprecated */
1024, /* screen width (x) */
768, /* screen height (y) */
3, /* depth */
0, /* hidecount */
0, /* loaded */
};
static int lastx=-1;
static int lasty=-1;
static Vctlr*
init(Vctlr* vctlr, int x, int y, int d)
{
USED(vctlr,x,y,d);
return &FSV;
}
static int
setcolour(ulong p, ulong r, ulong g, ulong b)
{
if(gscreen.ldepth == 0)
return 0; /* can't change mono screen colormap */
else{
vid->addr = p << 24;
vid->color = r << 24;
vid->color = g << 24;
vid->color = b << 24;
return 1;
}
}
static ulong backingstore[64];
static Memdata backingstoredata = {
nil,
backingstore
};
static ulong backingnocursor[64];
static Memdata backingnocursordata = {
nil,
backingnocursor
};
static ulong backwithcursor[64];
static Memdata backwithcursordata = {
nil,
backwithcursor
};
static Memimage backingnocursormem = {
{0,0,16,16},
{0,0,16,16},
3,
0,
&backingnocursordata,
0,
16/4,
0,
0,
};
static Memimage backingmem = {
{0,0,16,16},
{0,0,16,16},
3,
0,
&backingstoredata,
0,
16/4,
0,
0,
};
static void
disable(void)
{
if(FSV.hidecount++)
return;
if(lastx < 0 || lasty < 0)
return;
memimagedraw(&gscreen, Rect(lastx,lasty,lastx+16,lasty+16),
&backingnocursormem, Pt(0,0), memones, Pt(0,0));
}
static void
enable(void)
{
uchar *p;
uchar mask;
uchar *cset;
int i;
if(--FSV.hidecount > 0)
return;
FSV.hidecount = 0;
if(lastx < 0 || lasty < 0)
return;
memimagedraw(&backingmem,Rect(0,0,16,16),&gscreen,Pt(lastx,lasty),memones,
Pt(0,0));
memcpy(backingnocursor,backingstore,256);
p = (uchar*)backingmem.data->data;
cset = FSV.cursor.set;
for(i=0;i<32;i++) {
mask = ~cset[i];
if(!(mask&(1<<7))) *p = 0xff;
++p;
if(!(mask&(1<<6))) *p = 0xff;
++p;
if(!(mask&(1<<5))) *p = 0xff;
++p;
if(!(mask&(1<<4))) *p = 0xff;
++p;
if(!(mask&(1<<3))) *p = 0xff;
++p;
if(!(mask&(1<<2))) *p = 0xff;
++p;
if(!(mask&(1<<1))) *p = 0xff;
++p;
if(!(mask&(1<<0))) *p = 0xff;
++p;
}
memimagedraw(&gscreen,Rect(lastx,lasty,lastx+16,lasty+16),&backingmem,Pt(0,0),
memones,Pt(0,0));
}
static void
move(int cx, int cy)
{
if(!FSV.loaded)
return;
disable();
cursorupdate0();
lastx = cx;
lasty = cy;
enable();
}
static void
load(Cursor *curs)
{
FSV.cursor = *curs;
FSV.loaded=1;
}
static int
isloaded(void)
{
return FSV.loaded;
}
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