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vmx: emulate ps/2 intellimouse scrolling

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This commit is contained in:
Sigrid Solveig Haflínudóttir 2021-07-06 15:44:16 +00:00
parent 78cf847bfb
commit 16da8c0529
2 changed files with 19 additions and 6 deletions
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1
sys/src/cmd/vmx/fns.h
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@ -1,4 +1,5 @@
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
void *emalloc(ulong);
void loadkernel(char *);
uvlong rget(char *);

24
sys/src/cmd/vmx/io.c
View file

@ -671,8 +671,10 @@ struct PCMouse {
} state;
u8int buf[64];
u8int bufr, bufw;
u8int actcmd;
u8int scaling21, res, rate;
u8int actcmd, id;
u8int scaling21, res;
u8int ratepp, ratep, rate;
int scroll;
} mouse = {
.res = 2,
.rate = 100
@ -741,6 +743,8 @@ updatemouse(void)
while(nbrecv(mousech, &m) > 0){
mouse.xy = addpt(mouse.xy, m.xy);
mouse.buttons = m.buttons;
if(m.buttons & 24)
mouse.scroll += (m.buttons>>2 & 6) - 3;
mouse.gotmouse = 1;
}
}
@ -750,13 +754,14 @@ clearmouse(void)
{
updatemouse();
mouse.xy = Pt(0, 0);
mouse.scroll = 0;
mouse.gotmouse = 0;
}
static void
mousepacket(int force)
{
int dx, dy;
int dx, dy, dz;
u8int b0;
updatemouse();
@ -764,6 +769,7 @@ mousepacket(int force)
return;
dx = mouse.xy.x;
dy = -mouse.xy.y;
dz = MIN(7, MAX(-8, mouse.scroll));
b0 = 8;
if((ulong)(dx + 256) > 511) dx = dx >> 31 ^ 0xff;
if((ulong)(dy + 256) > 511) dy = dy >> 31 ^ 0xff;
@ -772,9 +778,12 @@ mousepacket(int force)
mouseputc(b0);
mouseputc((u8int)dx);
mouseputc((u8int)dy);
if(mouse.id == 3)
mouseputc((u8int)dz);
mouse.xy.x -= dx;
mouse.xy.y += dy;
mouse.gotmouse = mouse.xy.x != 0 || mouse.xy.y != 0;
mouse.scroll -= dz;
mouse.gotmouse = mouse.xy.x != 0 || mouse.xy.y != 0 || mouse.scroll != 0;
}
static void
@ -800,19 +809,22 @@ mousecmd(u8int val)
mouse.actcmd = 0;
break;
case 0xf3: /* set sampling rate */
mouse.ratepp = mouse.ratep;
mouse.ratep = mouse.rate;
mouse.rate = val;
if(mouse.ratepp == 200 && mouse.ratep == 100 && mouse.rate == 80)
mouse.id = 3; /* magic sequence for IntelliMouse */
mouseputc(0xfa);
mouse.actcmd = 0;
break;
default:
switch(val){
case 0xf3: case 0xe8: mouseputc(0xfa); mouse.actcmd = val; break;
case 0xff: mouseputc(0xfa); mousedefaults(); mouse.state = MOUSERESET; break; /* reset */
case 0xf6: mouseputc(0xfa); mousedefaults(); mouse.state = mouse.state & ~0xf | MOUSESTREAM; break; /* set defaults */
case 0xf5: mouseputc(0xfa); clearmouse(); if((mouse.state&0xf) == MOUSESTREAM) mouse.state &= ~MOUSEREP; break; /* disable reporting */
case 0xf4: mouseputc(0xfa); clearmouse(); if((mouse.state&0xf) == MOUSESTREAM) mouse.state |= MOUSEREP; break; /* enable reporting */
case 0xf2: mouseputc(0xfa); mouseputc(0x00); clearmouse(); break; /* report device id */
case 0xf2: mouseputc(0xfa); mouseputc(mouse.id); clearmouse(); break; /* report device id */
case 0xf0: mouseputc(0xfa); clearmouse(); mouse.state = mouse.state & ~0xf | MOUSEREMOTE; break; /* set remote mode */
case 0xee: mouseputc(0xfa); clearmouse(); mouse.state |= MOUSEWRAP; break; /* set wrap mode */
case 0xec: mouseputc(0xfa); clearmouse(); mouse.state &= ~MOUSEWRAP; break; /* reset wrap mode */