new experimental updategeom() additions that should avoid several problems with Xinerama, this is EXPERIMENTAL and might break something, the algorithms in use are quite complex and cumbersome, patches and comments welcome
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Anselm R Garbe
parent
e7300e0f6f
commit
82ec7a7ed4
101
dwm.c
101
dwm.c
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@ -221,7 +221,7 @@ static void toggleview(const Arg *arg);
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static void unfocus(Client *c);
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static void unmanage(Client *c, Bool destroyed);
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static void unmapnotify(XEvent *e);
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static void updategeom(void);
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static Bool updategeom(void);
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static void updatebarpos(Monitor *m);
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static void updatebars(void);
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static void updatenumlockmask(void);
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@ -535,14 +535,15 @@ configurenotify(XEvent *e) {
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if(ev->window == root) {
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sw = ev->width;
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sh = ev->height;
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updategeom();
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if(dc.drawable != 0)
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XFreePixmap(dpy, dc.drawable);
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dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
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updatebars();
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for(m = mons; m; m = m->next)
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XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
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arrange();
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if(updategeom()) {
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if(dc.drawable != 0)
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XFreePixmap(dpy, dc.drawable);
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dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
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updatebars();
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for(m = mons; m; m = m->next)
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XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
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arrange();
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}
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}
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}
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@ -1692,26 +1693,73 @@ updatebarpos(Monitor *m) {
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m->by = -bh;
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}
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void
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Bool
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updategeom(void) {
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int i, n = 1;
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int i, j, nn = 1, n = 1;
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Client *c;
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Monitor *newmons = NULL, *m = NULL, *tm;
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#ifdef XINERAMA
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int nn;
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XineramaScreenInfo *info = NULL;
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Bool *flags = NULL;
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if(XineramaIsActive(dpy))
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info = XineramaQueryScreens(dpy, &n);
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for(i = 1, nn = n; i < n; i++)
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if(info[i - 1].x_org == info[i].x_org && info[i - 1].y_org == info[i].y_org
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&& info[i - 1].width == info[i].width && info[i - 1].height == info[i].height)
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--nn;
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n = nn; /* we only consider unique geometries as separate screens */
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flags = (Bool *)malloc(sizeof(Bool) * n);
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for(i = 0; i < n; i++)
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flags[i] = False;
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/* next double-loop seeks any combination of retrieved Xinerama info
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* with existing monitors, this is used to avoid unnecessary
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* re-allocations of monitor structs */
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for(i = 0, nn = n; i < n; i++)
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for(j = 0, m = mons; m; m = m->next, j++)
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if(!flags[j]) {
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if((flags[j] = (
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info[i].x_org == m->mx
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&& info[i].y_org == m->my
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&& info[i].width == m->mw
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&& info[i].height == m->mh)
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))
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--nn;
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}
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if(nn == 0) { /* no need to re-allocate monitors */
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j = 0;
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for(i = 0, m = mons; m; m = m->next, i++) {
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m->num = info[i].screen_number;
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if(info[i].x_org != m->mx
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|| info[i].y_org != m->my
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|| info[i].width != m->mw
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|| info[i].height != m->mh)
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{
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m->mx = m->wx = info[i].x_org;
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m->my = m->wy = info[i].y_org;
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m->mw = m->ww = info[i].width;
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m->mh = m->wh = info[i].height;
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updatebarpos(m);
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j++;
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}
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}
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XFree(info);
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free(flags);
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return j > 0;
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}
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/* next algorithm only considers unique geometries as separate screens */
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for(i = 0; i < n; i++)
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flags[i] = False; /* used for ignoring certain monitors */
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for(i = 0, nn = n; i < n; i++)
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for(j = 0; j < n; j++)
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if(i != j && !flags[i]) {
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if((flags[i] = (
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info[i].x_org == info[j].x_org
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&& info[i].y_org == info[j].y_org
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&& info[i].width == info[j].width
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&& info[i].height == info[j].height)
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))
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--nn;
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}
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#endif /* XINERAMA */
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/* allocate monitor(s) for the new geometry setup */
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for(i = 0; i < n; i++) {
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for(i = 0; i < nn; i++) {
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if(!(m = (Monitor *)malloc(sizeof(Monitor))))
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die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
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m->next = newmons;
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@ -1720,14 +1768,18 @@ updategeom(void) {
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/* initialise monitor(s) */
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#ifdef XINERAMA
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if(XineramaIsActive(dpy)) {
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for(i = 0, m = newmons; m; m = m->next, i++) {
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m->num = info[i].screen_number;
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m->mx = m->wx = info[i].x_org;
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m->my = m->wy = info[i].y_org;
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m->mw = m->ww = info[i].width;
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m->mh = m->wh = info[i].height;
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for(i = 0, m = newmons; m && i < n; i++) {
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if(!flags[i]) { /* only use screens that aren't dublettes */
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m->num = info[i].screen_number;
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m->mx = m->wx = info[i].x_org;
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m->my = m->wy = info[i].y_org;
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m->mw = m->ww = info[i].width;
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m->mh = m->wh = info[i].height;
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m = m->next;
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}
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}
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XFree(info);
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free(flags);
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}
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else
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#endif /* XINERAMA */
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@ -1767,6 +1819,7 @@ updategeom(void) {
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cleanupmons();
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selmon = mons = newmons;
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selmon = wintomon(root);
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return True;
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}
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void
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