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Fix process of gettign the active monitor

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- Get the window with keyboard focus using XGetInputFocus() instead of
  _NET_ACTIVE_WINDOW
- Handle edge cases of keyboard/mouse focus being on different X screen
- Set sane default in case the active monitor can't be determined
  (fixing issue #762)
This commit is contained in:
Mikau 2021-01-23 22:21:48 +01:00
parent 77bfbc4f7f
commit ebcd20d8d0
1 changed files with 20 additions and 36 deletions
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56
src/x11/screen.c
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@ -309,10 +309,7 @@ const struct screen_info *get_active_screen(void)
if (settings.f_mode == FOLLOW_NONE) {
if (settings.monitor >= 0 && settings.monitor < screens_len) {
ret = settings.monitor;
} else {
ret = XDefaultScreen(xctx.dpy);
}
goto sc_cleanup;
} else {
int x, y;
@ -327,19 +324,25 @@ const struct screen_info *get_active_screen(void)
if (settings.f_mode == FOLLOW_KEYBOARD) {
Window focused = get_focused_window();
if (focused == 0) {
if (!focused) {
/*
* This can happen in the case that the user
* just has the root window open, eg. in empty
* tags in dwm or similar window managers. In
* that case, fall back to FOLLOW_MOUSE, since
* it probably still has the right screen.
* If no window is focused, or the focus is set
* to dynamically change to the root window of
* the screen the pointer is on, force following
* the mouse.
*/
force_follow_mouse = true;
} else {
Window child_return;
XTranslateCoordinates(xctx.dpy, focused, root,
0, 0, &x, &y, &child_return);
/*
* The window with input focus might be on a
* different X screen. Use the mouse location
* in that case.
*/
force_follow_mouse = !XTranslateCoordinates(
xctx.dpy, focused,root,
0, 0, &x, &y,
&child_return);
}
}
@ -370,7 +373,7 @@ const struct screen_info *get_active_screen(void)
goto sc_cleanup;
/* something seems to be wrong. Fall back to default */
ret = XDefaultScreen(xctx.dpy);
ret = 0;
goto sc_cleanup;
}
sc_cleanup:
@ -386,32 +389,13 @@ sc_cleanup:
*/
static Window get_focused_window(void)
{
Window focused = 0;
Atom type;
int format;
unsigned long nitems, bytes_after;
unsigned char *prop_return = NULL;
Window root = RootWindow(xctx.dpy, DefaultScreen(xctx.dpy));
Atom netactivewindow =
XInternAtom(xctx.dpy, "_NET_ACTIVE_WINDOW", false);
Window focused;
int ignored;
XGetWindowProperty(xctx.dpy,
root,
netactivewindow,
0L,
sizeof(Window),
false,
XA_WINDOW,
&type,
&format,
&nitems,
&bytes_after,
&prop_return);
if (prop_return) {
focused = *(Window *)prop_return;
XFree(prop_return);
}
XGetInputFocus(xctx.dpy, &focused, &ignored);
if (focused == None || focused == PointerRoot)
focused = 0;
return focused;
}