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Add support for VirtualBox guests #23

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59 changes: 59 additions & 0 deletions src/mice.c
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Original file line number Diff line number Diff line change
Expand Up @@ -254,6 +254,62 @@ static int M_evdev (Gpm_Event * state, unsigned char *data)
}
return 0;
}

/*
* USB Tablet emulated by VirtualBox for seamless mouse integration
*
* The 'VirtualBox USB Tablet' is an absolute pointing device which
* uses values of range 0-32767 for both axes, reports five button
* states (left, right, middle, side, extra) and two wheel states
* (vertical, horizontal; both relative)
*/
#define VBOX_MAX 32767

static int M_vbox (Gpm_Event * state, unsigned char *data)
{
struct input_event thisevent;
(void) memcpy (&thisevent, data, sizeof (struct input_event));

state->dx = state->dy = 0;
state->wdx = state->wdy = 0;

// Pointer
if (thisevent.type == EV_ABS) {
if (thisevent.code == REL_X) {
state->x = thisevent.value * (win.ws_col+1) / VBOX_MAX;
realposx = thisevent.value * REALPOS_MAX / VBOX_MAX;
} else if (thisevent.code == REL_Y) {
state->y = thisevent.value * (win.ws_row+1) / VBOX_MAX;
realposy = thisevent.value * REALPOS_MAX / VBOX_MAX;
}

// Wheels
} else if (thisevent.type == EV_REL) {
if (thisevent.code == REL_WHEEL) {
//state->buttons ^= thisevent.value > 0 ? GPM_B_UP : GPM_B_DOWN;
//state->wdy = thisevent.value > 0 ? +1 : -1;
state->wdy = thisevent.value;
} else if (thisevent.code == REL_HWHEEL) {
//state->buttons ^= thisevent.value > 0 ? GPM_B_RIGHT : GPM_B_LEFT;
//state->buttons ^= thisevent.value > 0 ? GPM_B_LEFT : GPM_B_RIGHT;
//state->wdx = thisevent.value > 0 ? +1 : -1;
//state->wdx = thisevent.value > 0 ? -1 : +1;
state->wdx = thisevent.value;
}

// Buttons
} else if (thisevent.type == EV_KEY) {
switch (thisevent.code) {
case BTN_LEFT: state->buttons ^= GPM_B_LEFT; break;
case BTN_MIDDLE: state->buttons ^= GPM_B_MIDDLE; break;
case BTN_RIGHT: state->buttons ^= GPM_B_RIGHT; break;
case BTN_SIDE: state->buttons ^= GPM_B_MIDDLE; break;
case BTN_EXTRA: state->buttons ^= GPM_B_MIDDLE; break;
}
}

return 0;
}
#endif /* HAVE_LINUX_INPUT_H */

static int M_ms(Gpm_Event *state, unsigned char *data)
Expand Down Expand Up @@ -2404,6 +2460,9 @@ Gpm_Type mice[]={
{"evdev", "Linux Event Device",
"", M_evdev, I_empty, STD_FLG,
{0x00, 0x00, 0x00, 0x00} , 16, 16, 0, 0, NULL},
{"vbox", "For USB Tablet emulated by VirtualBox for mouse integration",
"", M_vbox, I_empty, STD_FLG,
{0x00, 0x00, 0x00, 0x00} , 24, 24, 0, 1, NULL},
#endif /* HAVE_LINUX_INPUT_H */
{"exps2", "IntelliMouse Explorer (ps2) - 3 buttons, wheel unused",
"ExplorerPS/2", M_imps2, I_exps2, STD_FLG,
Expand Down