/**
* Send an absolute pointer event to a pointing device (the VMM device if
* possible or whatever emulated absolute device seems best to us if not).
*
* @returns COM status code
*/
HRESULT Mouse::reportAbsEvent(int32_t x, int32_t y,
int32_t dz, int32_t dw, uint32_t fButtons,
bool fUsesVMMDevEvent)
{
HRESULT rc = S_OK;
/** If we are using the VMMDev to report absolute position but without
* VMMDev IRQ support then we need to send a small "jiggle" to the emulated
* relative mouse device to alert the guest to changes. */
LONG cJiggle = 0;
/*
* Send the absolute mouse position to the device.
*/
if (x != mcLastX || y != mcLastY)
{
if (vmmdevCanAbs())
{
rc = reportAbsEventToVMMDev(x, y);
cJiggle = !fUsesVMMDevEvent;
}
else
{
rc = reportAbsEventToMouseDev(x, y, 0, 0, fButtons);
fButtons = 0;
}
}
if (SUCCEEDED(rc))
rc = reportRelEventToMouseDev(cJiggle, 0, dz, dw, fButtons);
mcLastX = x;
mcLastY = y;
return rc;
}
/**
* Send an absolute pointer event to a pointing device (the VMM device if
* possible or whatever emulated absolute device seems best to us if not).
*
* @returns COM status code
*/
HRESULT Mouse::reportAbsEvent(int32_t mouseXAbs, int32_t mouseYAbs,
int32_t dz, int32_t dw, uint32_t fButtons,
bool fUsesVMMDevEvent)
{
HRESULT rc;
/** If we are using the VMMDev to report absolute position but without
* VMMDev IRQ support then we need to send a small "jiggle" to the emulated
* relative mouse device to alert the guest to changes. */
LONG cJiggle = 0;
if (vmmdevCanAbs())
{
/*
* Send the absolute mouse position to the VMM device.
*/
if (mouseXAbs != mcLastAbsX || mouseYAbs != mcLastAbsY)
{
rc = reportAbsEventToVMMDev(mouseXAbs, mouseYAbs);
cJiggle = !fUsesVMMDevEvent;
}
rc = reportRelEventToMouseDev(cJiggle, 0, dz, dw, fButtons);
}
else
rc = reportAbsEventToMouseDev(mouseXAbs, mouseYAbs, dz, dw, fButtons);
mcLastAbsX = mouseXAbs;
mcLastAbsY = mouseYAbs;
return rc;
}
/**
* Send a relative mouse event to the guest.
* @note the VMMDev capability change is so that the guest knows we are sending
* real events over the PS/2 device and not dummy events to signal the
* arrival of new absolute pointer data
*
* @returns COM status code
* @param dx X movement
* @param dy Y movement
* @param dz Z movement
* @param buttonState The mouse button state
*/
STDMETHODIMP Mouse::PutMouseEvent(LONG dx, LONG dy, LONG dz, LONG dw, LONG buttonState)
{
HRESULT rc;
uint32_t fButtons;
AutoCaller autoCaller(this);
if (FAILED(autoCaller.rc())) return autoCaller.rc();
LogRel3(("%s: dx=%d, dy=%d, dz=%d, dw=%d\n", __PRETTY_FUNCTION__,
dx, dy, dz, dw));
fButtons = mouseButtonsToPDM(buttonState);
/* Make sure that the guest knows that we are sending real movement
* events to the PS/2 device and not just dummy wake-up ones. */
updateVMMDevMouseCaps(0, VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE);
rc = reportRelEventToMouseDev(dx, dy, dz, dw, fButtons);
fireMouseEvent(false, dx, dy, dz, dw, buttonState);
return rc;
}