Fix resize with multiple monitors and portrait mode

When connecting/disconnecting a portrait monitor, the
XRRScreenChangeNotifyEvent height & width are reversed due to the XRandR
rotation; detect this and DTRT.

1 files changed, 7 insertions, 2 deletions

diff --git a/slock.c b/slock.c
index d2f0886..61fe9ee 100644
--- a/slock.c
+++ b/slock.c
@@ -201,8 +201,13 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
                         rre = (XRRScreenChangeNotifyEvent*)&ev;
                         for (screen = 0; screen < nscreens; screen++) {
                                 if (locks[screen]->win == rre->window) {
-                                        XResizeWindow(dpy, locks[screen]->win,
-                                                      rre->width, rre->height);
+                                        if (rre->rotation == RR_Rotate_90 ||
+                                            rre->rotation == RR_Rotate_270)
+                                                XResizeWindow(dpy, locks[screen]->win,
+                                                              rre->height, rre->width);
+                                        else
+                                                XResizeWindow(dpy, locks[screen]->win,
+                                                              rre->width, rre->height);
                                         XClearWindow(dpy, locks[screen]->win);
                                 }
                         }