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[client] x11: generate synthetic EnterNotify event on cursor leave

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If the cursor was grabbed the window the cursor moves over when it is
ungrabbed will recieve an EnterNotify event with the mode of
NotifyUngrab, unfortunatly some window manages such as i3 will ignore
this message and as such focus follows mouse will not function
correctly. This patch injects a normal EnterNotify to work around this
issue.
This commit is contained in:
Geoffrey McRae 2023-03-05 16:40:05 +11:00
parent 91b0cba145
commit 894b8b0c22
1 changed files with 40 additions and 0 deletions
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40
client/displayservers/X11/x11.c
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@ -1171,6 +1171,46 @@ static void x11XInputEvent(XGenericEventCookie *cookie)
app_updateCursorPos(xie->event_x, xie->event_y);
app_handleEnterEvent(false);
x11.entered = false;
/**
* Because there is a race with the pointer ungrab the enter event for the
* next window is sometimes sent with the mode NotifyUngrab, unfortunatly
* some window managers such as i3 will ignore these which breaks focus
* follows mouse mode. To correct this we generate and send a normal
* EnterNotify event.
*/
int root_x, root_y, win_x, win_y;
Window root_win, child_win;
unsigned int mask;
XQueryPointer(x11.display, DefaultRootWindow(x11.display), &root_win,
&child_win, &root_x, &root_y, &win_x, &win_y, &mask);
int target_x, target_y;
Window target_root;
XTranslateCoordinates(x11.display, DefaultRootWindow(x11.display),
child_win, root_x, root_y, &target_x, &target_y, &target_root);
XEvent event;
memset(&event, 0, sizeof(event));
event.type = EnterNotify;
event.xcrossing.serial = 0;
event.xcrossing.send_event = True;
event.xcrossing.display = x11.display;
event.xcrossing.window = child_win;
event.xcrossing.root = root_win;
event.xcrossing.subwindow = child_win;
event.xcrossing.time = CurrentTime;
event.xcrossing.mode = NotifyNormal;
event.xcrossing.detail = NotifyNonlinear;
event.xcrossing.same_screen = True;
event.xcrossing.focus = False;
event.xcrossing.x = target_x;
event.xcrossing.y = target_y;
event.xcrossing.x_root = root_x;
event.xcrossing.y_root = root_y;
XSendEvent(x11.display, child_win, True, EnterWindowMask, &event);
XFlush(x11.display);
return;
}