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vbox: support more mouse event combinations

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VirtualBox can receive absolute or relative mouse motion events from the
'Input' service and the VM can support either or both of them. With this
patch, more of the possible combinations are handled.

Fixes #1470
This commit is contained in:
Christian Prochaska 2015-03-26 15:02:05 +01:00 committed by Christian Helmuth
parent 70aa98d837
commit 0e344c9830
1 changed files with 42 additions and 7 deletions
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49
repos/ports/src/virtualbox/frontend/console.h
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@ -109,6 +109,7 @@ class GenodeConsole : public Console {
Genode::Signal_context _context;
Input::Event *_ev_buf;
unsigned _ax, _ay;
bool _last_received_motion_event_was_absolute;
bool _key_status[Input::KEY_MAX + 1];
@ -125,7 +126,8 @@ class GenodeConsole : public Console {
:
Console(),
_ev_buf(static_cast<Input::Event *>(Genode::env()->rm_session()->attach(_input.dataspace()))),
_ax(0), _ay(0)
_ax(0), _ay(0),
_last_received_motion_event_was_absolute(false)
{
for (unsigned i = 0; i <= Input::KEY_MAX; i++)
_key_status[i] = 0;
@ -191,22 +193,55 @@ class GenodeConsole : public Console {
| (_key_status[Input::BTN_RIGHT] ? MouseButtonState_RightButton : 0)
| (_key_status[Input::BTN_MIDDLE] ? MouseButtonState_MiddleButton : 0);
if (ev.is_absolute_motion()) {
_last_received_motion_event_was_absolute = true;
/* transform absolute to relative if guest is so odd */
if (!guest_abs && guest_rel) {
int const boundary = 20;
int rx = ev.ax() - _ax; _ax = ev.ax();
int ry = ev.ay() - _ay; _ay = ev.ay();
int rx = ev.ax() - _ax;
int ry = ev.ay() - _ay;
rx = Genode::min(boundary, Genode::max(-boundary, rx));
ry = Genode::min(boundary, Genode::max(-boundary, ry));
gMouse->PutMouseEvent(rx, ry, 0, 0, buttons);
} else
gMouse->PutMouseEventAbsolute(ev.ax(), ev.ay(), 0,
0, buttons);
} else if (ev.is_relative_motion())
gMouse->PutMouseEvent(ev.rx(), ev.ry(), 0, 0, buttons);
_ax = ev.ax();
_ay = ev.ay();
} else if (ev.is_relative_motion()) {
_last_received_motion_event_was_absolute = false;
/* prefer relative motion event */
if (guest_rel)
gMouse->PutMouseEvent(ev.rx(), ev.ry(), 0, 0, buttons);
else if (guest_abs) {
_ax += ev.rx();
_ay += ev.ry();
gMouse->PutMouseEventAbsolute(_ax, _ay, 0, 0, buttons);
}
}
/* only the buttons changed */
else
gMouse->PutMouseEvent(0, 0, 0, 0, buttons);
else {
if (_last_received_motion_event_was_absolute) {
/* prefer absolute button event */
if (guest_abs)
gMouse->PutMouseEventAbsolute(_ax, _ay, 0, 0, buttons);
else if (guest_rel)
gMouse->PutMouseEvent(0, 0, 0, 0, buttons);
} else {
/* prefer relative button event */
if (guest_rel)
gMouse->PutMouseEvent(0, 0, 0, 0, buttons);
else if (guest_abs)
gMouse->PutMouseEventAbsolute(_ax, _ay, 0, 0, buttons);
}
}
}
if (is_wheel)