[hackers] [slock] Fix resize with multiple monitors and portrait mode || Bob Uhl

[git]

commit 7a604ec1fae1eda36f210a28a2cf466583a9cb87
Author:     Bob Uhl <b...@zvelo.com>
AuthorDate: Mon Nov 7 10:15:20 2016 -0700
Commit:     Markus Teich <tei...@fs.tum.de>
CommitDate: Wed Nov 23 00:26:51 2016 +0100

    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.

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);
                                }
                        }