diff options
| -rw-r--r-- | dwm.c | 101 |
1 files changed, 77 insertions, 24 deletions
diff --git a/dwm.c b/dwm.c index 1cb07d3..2b4d6b0 100644 --- a/dwm.c +++ b/dwm.c @@ -221,7 +221,7 @@ static void toggleview(const Arg *arg); static void unfocus(Client *c); static void unmanage(Client *c, Bool destroyed); static void unmapnotify(XEvent *e); -static void updategeom(void); +static Bool updategeom(void); static void updatebarpos(Monitor *m); static void updatebars(void); static void updatenumlockmask(void); @@ -535,14 +535,15 @@ configurenotify(XEvent *e) { if(ev->window == root) { sw = ev->width; sh = ev->height; - updategeom(); - if(dc.drawable != 0) - XFreePixmap(dpy, dc.drawable); - dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); - updatebars(); - for(m = mons; m; m = m->next) - XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh); - arrange(); + if(updategeom()) { + if(dc.drawable != 0) + XFreePixmap(dpy, dc.drawable); + dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); + updatebars(); + for(m = mons; m; m = m->next) + XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh); + arrange(); + } } } @@ -1692,26 +1693,73 @@ updatebarpos(Monitor *m) { m->by = -bh; } -void +Bool updategeom(void) { - int i, n = 1; + int i, j, nn = 1, n = 1; Client *c; Monitor *newmons = NULL, *m = NULL, *tm; #ifdef XINERAMA - int nn; XineramaScreenInfo *info = NULL; + Bool *flags = NULL; if(XineramaIsActive(dpy)) info = XineramaQueryScreens(dpy, &n); - for(i = 1, nn = n; i < n; i++) - if(info[i - 1].x_org == info[i].x_org && info[i - 1].y_org == info[i].y_org - && info[i - 1].width == info[i].width && info[i - 1].height == info[i].height) - --nn; - n = nn; /* we only consider unique geometries as separate screens */ + flags = (Bool *)malloc(sizeof(Bool) * n); + for(i = 0; i < n; i++) + flags[i] = False; + /* next double-loop seeks any combination of retrieved Xinerama info + * with existing monitors, this is used to avoid unnecessary + * re-allocations of monitor structs */ + for(i = 0, nn = n; i < n; i++) + for(j = 0, m = mons; m; m = m->next, j++) + if(!flags[j]) { + if((flags[j] = ( + info[i].x_org == m->mx + && info[i].y_org == m->my + && info[i].width == m->mw + && info[i].height == m->mh) + )) + --nn; + } + if(nn == 0) { /* no need to re-allocate monitors */ + j = 0; + for(i = 0, m = mons; m; m = m->next, i++) { + m->num = info[i].screen_number; + if(info[i].x_org != m->mx + || info[i].y_org != m->my + || info[i].width != m->mw + || info[i].height != m->mh) + { + m->mx = m->wx = info[i].x_org; + m->my = m->wy = info[i].y_org; + m->mw = m->ww = info[i].width; + m->mh = m->wh = info[i].height; + updatebarpos(m); + j++; + } + } + XFree(info); + free(flags); + return j > 0; + } + /* next algorithm only considers unique geometries as separate screens */ + for(i = 0; i < n; i++) + flags[i] = False; /* used for ignoring certain monitors */ + for(i = 0, nn = n; i < n; i++) + for(j = 0; j < n; j++) + if(i != j && !flags[i]) { + if((flags[i] = ( + info[i].x_org == info[j].x_org + && info[i].y_org == info[j].y_org + && info[i].width == info[j].width + && info[i].height == info[j].height) + )) + --nn; + } #endif /* XINERAMA */ /* allocate monitor(s) for the new geometry setup */ - for(i = 0; i < n; i++) { + for(i = 0; i < nn; i++) { if(!(m = (Monitor *)malloc(sizeof(Monitor)))) die("fatal: could not malloc() %u bytes\n", sizeof(Monitor)); m->next = newmons; @@ -1720,14 +1768,18 @@ updategeom(void) { /* initialise monitor(s) */ #ifdef XINERAMA if(XineramaIsActive(dpy)) { - for(i = 0, m = newmons; m; m = m->next, i++) { - m->num = info[i].screen_number; - m->mx = m->wx = info[i].x_org; - m->my = m->wy = info[i].y_org; - m->mw = m->ww = info[i].width; - m->mh = m->wh = info[i].height; + for(i = 0, m = newmons; m && i < n; i++) { + if(!flags[i]) { /* only use screens that aren't dublettes */ + m->num = info[i].screen_number; + m->mx = m->wx = info[i].x_org; + m->my = m->wy = info[i].y_org; + m->mw = m->ww = info[i].width; + m->mh = m->wh = info[i].height; + m = m->next; + } } XFree(info); + free(flags); } else #endif /* XINERAMA */ @@ -1767,6 +1819,7 @@ updategeom(void) { cleanupmons(); selmon = mons = newmons; selmon = wintomon(root); + return True; } void |