/*
* Send a mouse event from the client to the guest OS
*
* The QEMU mouse can be in either relative, or absolute mode.
* Movement is sent separately from button state, which has to
* be encoded as virtual key events. We also don't actually get
* given any button up/down events, so have to track changes in
* the button state.
*/
static void xenfb_mouse_event(void *opaque,
int dx, int dy, int dz, int button_state)
{
struct XenInput *xenfb = opaque;
DisplaySurface *surface = qemu_console_surface(xenfb->c.con);
int dw = surface_width(surface);
int dh = surface_height(surface);
int i;
trace_xenfb_mouse_event(opaque, dx, dy, dz, button_state,
xenfb->abs_pointer_wanted);
if (xenfb->abs_pointer_wanted)
xenfb_send_position(xenfb,
dx * (dw - 1) / 0x7fff,
dy * (dh - 1) / 0x7fff,
dz);
else
xenfb_send_motion(xenfb, dx, dy, dz);
for (i = 0 ; i < 8 ; i++) {
int lastDown = xenfb->button_state & (1 << i);
int down = button_state & (1 << i);
if (down == lastDown)
continue;
if (xenfb_send_key(xenfb, down, BTN_LEFT+i) < 0)
return;
}
xenfb->button_state = button_state;
}
static void xenfb_mouse_sync(DeviceState *dev)
{
struct XenInput *xenfb = (struct XenInput *)dev;
trace_xenfb_mouse_event(xenfb, xenfb->axis[INPUT_AXIS_X],
xenfb->axis[INPUT_AXIS_Y],
xenfb->wheel, 0,
xenfb->abs_pointer_wanted);
if (xenfb->abs_pointer_wanted) {
xenfb_send_position(xenfb, xenfb->axis[INPUT_AXIS_X],
xenfb->axis[INPUT_AXIS_Y],
xenfb->wheel);
} else {
xenfb_send_motion(xenfb, xenfb->axis[INPUT_AXIS_X],
xenfb->axis[INPUT_AXIS_Y],
xenfb->wheel);
xenfb->axis[INPUT_AXIS_X] = 0;
xenfb->axis[INPUT_AXIS_Y] = 0;
}
xenfb->wheel = 0;
}