#include <stdint.h>
#include <X11/extensions/XI2proto.h>
#include <X11/Xlibint.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/extutil.h>
#include "XIint.h"
#define FP1616toDBL(x) ((x) * 1.0 / (1 << 16))
Bool
XIQueryPointer(Display *dpy,
int deviceid,
Window w,
Window *root,
Window *child,
double *root_x,
double *root_y,
double *win_x,
double *win_y,
XIButtonState *buttons,
XIModifierState *mods,
XIGroupState *group)
{
xXIQueryPointerReq *req;
xXIQueryPointerReply rep;
XExtDisplayInfo *info = XInput_find_display(dpy);
LockDisplay(dpy);
if (_XiCheckExtInit(dpy, XInput_2_0, info) == -1)
return False;
GetReq(XIQueryPointer, req);
req->reqType = info->codes->major_opcode;
req->ReqType = X_XIQueryPointer;
req->deviceid = deviceid;
req->win = w;
if (!_XReply(dpy, (xReply *)&rep,
(sizeof(xXIQueryPointerReply) - sizeof(xReply))/4, xFalse)) {
UnlockDisplay(dpy);
SyncHandle();
return False;
}
*root = rep.root;
*child = rep.child;
*root_x = FP1616toDBL(cvtINT16toInt(rep.root_x));
*root_y = FP1616toDBL(cvtINT16toInt(rep.root_y));
*win_x = FP1616toDBL(cvtINT16toInt(rep.win_x));
*win_y = FP1616toDBL(cvtINT16toInt(rep.win_y));
mods->base = rep.mods.base_mods;
mods->latched = rep.mods.latched_mods;
mods->locked = rep.mods.locked_mods;
mods->effective = mods->base | mods->latched | mods->locked;
group->base = rep.group.base_group;
group->latched = rep.group.latched_group;
group->locked = rep.group.locked_group;
group->effective = group->base | group->latched | group->locked;
buttons->mask_len = rep.buttons_len * 4;
buttons->mask = malloc(buttons->mask_len);
if (buttons->mask)
_XRead(dpy, (char*)buttons->mask, buttons->mask_len);
UnlockDisplay(dpy);
SyncHandle();
return rep.same_screen;
}