URI: 
       merged Christof Musik's Xinerama support patches, though this needs some polishing! - dwm - dynamic window manager
  HTML git clone https://git.parazyd.org/dwm
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit 985e3305249987739867f33879ddbb8bc3028e00
   DIR parent 5f19423c7bd2aa1ebb3010af15bebffbc3a9cbc3
  HTML Author: anselm@anselm1 <unknown>
       Date:   Fri, 21 Dec 2007 12:54:45 +0000
       
       merged Christof Musik's Xinerama support patches, though this needs some polishing!
       Diffstat:
         M config.mk                           |       2 +-
         M dwm.c                               |     756 ++++++++++++++++++-------------
       
       2 files changed, 454 insertions(+), 304 deletions(-)
       ---
   DIR diff --git a/config.mk b/config.mk
       @@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
        
        # includes and libs
        INCS = -I. -I/usr/include -I${X11INC}
       -LIBS = -L/usr/lib -lc -L${X11LIB} -lX11
       +LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lXinerama
        
        # flags
        CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"
   DIR diff --git a/dwm.c b/dwm.c
       @@ -40,6 +40,9 @@
        #include <X11/Xlib.h>
        #include <X11/Xproto.h>
        #include <X11/Xutil.h>
       +//#ifdef XINERAMA
       +#include <X11/extensions/Xinerama.h>
       +//#endif
        
        /* macros */
        #define BUTTONMASK                (ButtonPressMask | ButtonReleaseMask)
       @@ -71,6 +74,7 @@ struct Client {
                Client *prev;
                Client *snext;
                Window win;
       +        int monitor;
        };
        
        typedef struct {
       @@ -104,6 +108,7 @@ typedef struct {
                const char *prop;
                const char *tags;
                Bool isfloating;
       +        int monitor;
        } Rule;
        
        typedef struct {
       @@ -111,6 +116,17 @@ typedef struct {
                regex_t *tagregex;
        } Regs;
        
       +typedef struct {
       +        int id;
       +        Window barwin;
       +        int sx, sy, sw, sh, wax, way, wah, waw;
       +        DC dc;
       +        Bool *seltags;
       +        Bool *prevtags;
       +        Layout *layout;
       +        double mwfact;
       +} Monitor;
       +
        /* function declarations */
        void applyrules(Client *c);
        void arrange(void);
       @@ -128,8 +144,8 @@ void destroynotify(XEvent *e);
        void detach(Client *c);
        void detachstack(Client *c);
        void drawbar(void);
       -void drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]);
       -void drawtext(const char *text, unsigned long col[ColLast]);
       +void drawsquare(Monitor *, Bool filled, Bool empty, unsigned long col[ColLast]);
       +void drawtext(Monitor *, const char *text, unsigned long col[ColLast]);
        void *emallocz(unsigned int size);
        void enternotify(XEvent *e);
        void eprint(const char *errstr, ...);
       @@ -146,10 +162,10 @@ Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
        void grabbuttons(Client *c, Bool focused);
        void grabkeys(void);
        unsigned int idxoftag(const char *tag);
       -void initfont(const char *fontstr);
       -Bool isoccupied(unsigned int t);
       +void initfont(Monitor*, const char *fontstr);
       +Bool isoccupied(Monitor *m, unsigned int t);
        Bool isprotodel(Client *c);
       -Bool isvisible(Client *c);
       +Bool isvisible(Client *c, Monitor *m);
        void keypress(XEvent *e);
        void killclient(const char *arg);
        void leavenotify(XEvent *e);
       @@ -158,7 +174,7 @@ void mappingnotify(XEvent *e);
        void maprequest(XEvent *e);
        void maximize(const char *arg);
        void movemouse(Client *c);
       -Client *nexttiled(Client *c);
       +Client *nexttiled(Client *c, Monitor *m);
        void propertynotify(XEvent *e);
        void quit(const char *arg);
        void reapply(const char *arg);
       @@ -173,8 +189,8 @@ void setmwfact(const char *arg);
        void setup(void);
        void spawn(const char *arg);
        void tag(const char *arg);
       -unsigned int textnw(const char *text, unsigned int len);
       -unsigned int textw(const char *text);
       +unsigned int textnw(Monitor*, const char *text, unsigned int len);
       +unsigned int textw(Monitor*, const char *text);
        void tile(void);
        void togglebar(const char *arg);
        void togglefloating(const char *arg);
       @@ -183,7 +199,7 @@ void toggleview(const char *arg);
        void unban(Client *c);
        void unmanage(Client *c);
        void unmapnotify(XEvent *e);
       -void updatebarpos(void);
       +void updatebarpos(Monitor *s);
        void updatesizehints(Client *c);
        void updatetitle(Client *c);
        void view(const char *arg);
       @@ -192,11 +208,15 @@ int xerror(Display *dpy, XErrorEvent *ee);
        int xerrordummy(Display *dsply, XErrorEvent *ee);
        int xerrorstart(Display *dsply, XErrorEvent *ee);
        void zoom(const char *arg);
       +int monitorat(int, int);
       +void movetomonitor(const char *arg);
       +void selectmonitor(const char *arg);
        
        /* variables */
        char stext[256];
       -double mwfact;
       -int screen, sx, sy, sw, sh, wax, way, waw, wah;
       +int mcount, screen;
       +//double mwfact;
       +//int screen, sx, sy, sw, sh, wax, way, waw, wah;
        int (*xerrorxlib)(Display *, XErrorEvent *);
        unsigned int bh, bpos;
        unsigned int blw = 0;
       @@ -221,21 +241,24 @@ Bool domwfact = True;
        Bool dozoom = True;
        Bool otherwm, readin;
        Bool running = True;
       -Bool selscreen = True;
       +//Bool selscreen = True;
        Client *clients = NULL;
        Client *sel = NULL;
        Client *stack = NULL;
        Cursor cursor[CurLast];
        Display *dpy;
        DC dc = {0};
       -Layout *layout = NULL;
       -Window barwin, root;
       +Window root;
       +//Layout *layout = NULL;
       +//Window barwin, root;
        Regs *regs = NULL;
       +Monitor *monitors;
       +int selmonitor = 0;
        
        /* configuration, allows nested code to access above variables */
        #include "config.h"
        
       -Bool prevtags[LENGTH(tags)];
       +//Bool prevtags[LENGTH(tags)];
        
        /* function implementations */
        void
       @@ -243,7 +266,8 @@ applyrules(Client *c) {
                static char buf[512];
                unsigned int i, j;
                regmatch_t tmp;
       -        Bool matched = False;
       +        Bool matched_tag = False;
       +        Bool matched_monitor = False;
                XClassHint ch = { 0 };
        
                /* rule matching */
       @@ -253,10 +277,15 @@ applyrules(Client *c) {
                                ch.res_name ? ch.res_name : "", c->name);
                for(i = 0; i < LENGTH(rules); i++)
                        if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
       +                        if (rules[i].monitor >= 0 && rules[i].monitor < mcount) {
       +                                matched_monitor = True;
       +                                c->monitor = rules[i].monitor;
       +                        }
       +
                                c->isfloating = rules[i].isfloating;
                                for(j = 0; regs[i].tagregex && j < LENGTH(tags); j++) {
                                        if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
       -                                        matched = True;
       +                                        matched_tag = True;
                                                c->tags[j] = True;
                                        }
                                }
       @@ -265,8 +294,10 @@ applyrules(Client *c) {
                        XFree(ch.res_class);
                if(ch.res_name)
                        XFree(ch.res_name);
       -        if(!matched)
       -                memcpy(c->tags, seltags, sizeof seltags);
       +        if(!matched_tag)
       +                memcpy(c->tags, monitors[monitorat(-1, -1)].seltags, sizeof seltags);
       +        if (!matched_monitor)
       +                c->monitor = monitorat(-1, -1);
        }
        
        void
       @@ -274,11 +305,12 @@ arrange(void) {
                Client *c;
        
                for(c = clients; c; c = c->next)
       -                if(isvisible(c))
       +                if(isvisible(c, &monitors[c->monitor]))
                                unban(c);
                        else
                                ban(c);
       -        layout->arrange();
       +
       +        monitors[selmonitor].layout->arrange();
                focus(NULL);
                restack();
        }
       @@ -301,7 +333,7 @@ void
        ban(Client *c) {
                if(c->isbanned)
                        return;
       -        XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
       +        XMoveWindow(dpy, c->win, c->x + 3 * monitors[c->monitor].sw, c->y);
                c->isbanned = True;
        }
        
       @@ -311,10 +343,12 @@ buttonpress(XEvent *e) {
                Client *c;
                XButtonPressedEvent *ev = &e->xbutton;
        
       -        if(ev->window == barwin) {
       +        Monitor s = monitors[monitorat(-1, -1)];
       +
       +        if(ev->window == s.barwin) {
                        x = 0;
                        for(i = 0; i < LENGTH(tags); i++) {
       -                        x += textw(tags[i]);
       +                        x += textw(&s, tags[i]);
                                if(ev->x < x) {
                                        if(ev->button == Button1) {
                                                if(ev->state & MODKEY)
       @@ -339,20 +373,20 @@ buttonpress(XEvent *e) {
                        if(CLEANMASK(ev->state) != MODKEY)
                                return;
                        if(ev->button == Button1) {
       -                        if((layout->arrange == floating) || c->isfloating)
       +                        if((s.layout->arrange == floating) || c->isfloating)
                                        restack();
                                else
                                        togglefloating(NULL);
                                movemouse(c);
                        }
                        else if(ev->button == Button2) {
       -                        if((floating != layout->arrange) && c->isfloating)
       +                        if((floating != s.layout->arrange) && c->isfloating)
                                        togglefloating(NULL);
                                else
                                        zoom(NULL);
                        }
                        else if(ev->button == Button3 && !c->isfixed) {
       -                        if((floating == layout->arrange) || c->isfloating)
       +                        if((floating == s.layout->arrange) || c->isfloating)
                                        restack();
                                else
                                        togglefloating(NULL);
       @@ -379,24 +413,28 @@ checkotherwm(void) {
        
        void
        cleanup(void) {
       +        unsigned int i;
                close(STDIN_FILENO);
                while(stack) {
                        unban(stack);
                        unmanage(stack);
                }
       -        if(dc.font.set)
       -                XFreeFontSet(dpy, dc.font.set);
       -        else
       -                XFreeFont(dpy, dc.font.xfont);
       -        XUngrabKey(dpy, AnyKey, AnyModifier, root);
       -        XFreePixmap(dpy, dc.drawable);
       -        XFreeGC(dpy, dc.gc);
       -        XDestroyWindow(dpy, barwin);
       -        XFreeCursor(dpy, cursor[CurNormal]);
       -        XFreeCursor(dpy, cursor[CurResize]);
       -        XFreeCursor(dpy, cursor[CurMove]);
       -        XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
       -        XSync(dpy, False);
       +        for(i = 0; i < mcount; i++) {
       +                Monitor *m = &monitors[i];
       +                if(m->dc.font.set)
       +                        XFreeFontSet(dpy, m->dc.font.set);
       +                else
       +                        XFreeFont(dpy, m->dc.font.xfont);
       +                XUngrabKey(dpy, AnyKey, AnyModifier, root);
       +                XFreePixmap(dpy, m->dc.drawable);
       +                XFreeGC(dpy, m->dc.gc);
       +                XDestroyWindow(dpy, m->barwin);
       +                XFreeCursor(dpy, cursor[CurNormal]);
       +                XFreeCursor(dpy, cursor[CurResize]);
       +                XFreeCursor(dpy, cursor[CurMove]);
       +                XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
       +                XSync(dpy, False);
       +        }
        }
        
        void
       @@ -446,14 +484,15 @@ configure(Client *c) {
        void
        configurenotify(XEvent *e) {
                XConfigureEvent *ev = &e->xconfigure;
       +        Monitor *m = &monitors[selmonitor];
        
       -        if(ev->window == root && (ev->width != sw || ev->height != sh)) {
       -                sw = ev->width;
       -                sh = ev->height;
       +        if(ev->window == root && (ev->width != m->sw || ev->height != m->sh)) {
       +                m->sw = ev->width;
       +                m->sh = ev->height;
                        XFreePixmap(dpy, dc.drawable);
       -                dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
       -                XResizeWindow(dpy, barwin, sw, bh);
       -                updatebarpos();
       +                dc.drawable = XCreatePixmap(dpy, root, m->sw, bh, DefaultDepth(dpy, screen));
       +                XResizeWindow(dpy, m->barwin, m->sw, bh);
       +                updatebarpos(m);
                        arrange();
                }
        }
       @@ -465,25 +504,26 @@ configurerequest(XEvent *e) {
                XWindowChanges wc;
        
                if((c = getclient(ev->window))) {
       +                Monitor *m = &monitors[c->monitor];
                        if(ev->value_mask & CWBorderWidth)
                                c->border = ev->border_width;
       -                if(c->isfixed || c->isfloating || (floating == layout->arrange)) {
       +                if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
                                if(ev->value_mask & CWX)
       -                                c->x = ev->x;
       +                                c->x = m->sx+ev->x;
                                if(ev->value_mask & CWY)
       -                                c->y = ev->y;
       +                                c->y = m->sy+ev->y;
                                if(ev->value_mask & CWWidth)
                                        c->w = ev->width;
                                if(ev->value_mask & CWHeight)
                                        c->h = ev->height;
       -                        if((c->x + c->w) > sw && c->isfloating)
       -                                c->x = sw / 2 - c->w / 2; /* center in x direction */
       -                        if((c->y + c->h) > sh && c->isfloating)
       -                                c->y = sh / 2 - c->h / 2; /* center in y direction */
       +                        if((c->x - m->sx + c->w) > m->sw && c->isfloating)
       +                                c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
       +                        if((c->y - m->sy + c->h) > m->sh && c->isfloating)
       +                                c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
                                if((ev->value_mask & (CWX | CWY))
                                && !(ev->value_mask & (CWWidth | CWHeight)))
                                        configure(c);
       -                        if(isvisible(c))
       +                        if(isvisible(c, &monitors[monitorat(-1,-1)]))
                                        XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
                        }
                        else
       @@ -532,74 +572,77 @@ detachstack(Client *c) {
        
        void
        drawbar(void) {
       -        int i, x;
       -
       -        dc.x = dc.y = 0;
       -        for(i = 0; i < LENGTH(tags); i++) {
       -                dc.w = textw(tags[i]);
       -                if(seltags[i]) {
       -                        drawtext(tags[i], dc.sel);
       -                        drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
       +        int i, x, s;
       +
       +        for(s = 0; s < mcount; ++s) {
       +                Monitor *m = &monitors[s];
       +                m->dc.x = 0;
       +                for(i = 0; i < LENGTH(tags); i++) {
       +                        m->dc.w = textw(m, tags[i]);
       +                        if(m->seltags[i]) {
       +                                drawtext(m, tags[i], m->dc.sel);
       +                                drawsquare(m, sel && sel->tags[i] && sel->monitor == m->id, isoccupied(m, i), m->dc.sel);
       +                        }
       +                        else {
       +                                drawtext(m, tags[i], m->dc.norm);
       +                                drawsquare(m, sel && sel->tags[i] && sel->monitor == m->id, isoccupied(m, i), m->dc.norm);
       +                        }
       +                        m->dc.x += m->dc.w;
                        }
       -                else {
       -                        drawtext(tags[i], dc.norm);
       -                        drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
       +                m->dc.w = blw;
       +                drawtext(m, m->layout->symbol, m->dc.norm);
       +                x = m->dc.x + m->dc.w;
       +                m->dc.w = textw(m, stext);
       +                m->dc.x = m->sw - m->dc.w;
       +                if(m->dc.x < x) {
       +                        m->dc.x = x;
       +                        m->dc.w = m->sw - x;
                        }
       -                dc.x += dc.w;
       -        }
       -        dc.w = blw;
       -        drawtext(layout->symbol, dc.norm);
       -        x = dc.x + dc.w;
       -        dc.w = textw(stext);
       -        dc.x = sw - dc.w;
       -        if(dc.x < x) {
       -                dc.x = x;
       -                dc.w = sw - x;
       -        }
       -        drawtext(stext, dc.norm);
       -        if((dc.w = dc.x - x) > bh) {
       -                dc.x = x;
       -                if(sel) {
       -                        drawtext(sel->name, dc.sel);
       -                        drawsquare(False, sel->isfloating, dc.sel);
       +                drawtext(m, stext, m->dc.norm);
       +                if((m->dc.w = m->dc.x - x) > bh) {
       +                        m->dc.x = x;
       +                        if(sel && sel->monitor == m->id) {
       +                                drawtext(m, sel->name, m->dc.sel);
       +                                drawsquare(m, False, sel->isfloating, m->dc.sel);
       +                        }
       +                        else
       +                                drawtext(m, NULL, m->dc.norm);
                        }
       -                else
       -                        drawtext(NULL, dc.norm);
       +                XCopyArea(dpy, m->dc.drawable, m->barwin, m->dc.gc, 0, 0, m->sw, bh, 0, 0);
       +                XSync(dpy, False);
                }
       -        XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
       -        XSync(dpy, False);
        }
        
        void
       -drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
       +drawsquare(Monitor *m, Bool filled, Bool empty, unsigned long col[ColLast]) {
                int x;
                XGCValues gcv;
       -        XRectangle r = { dc.x, dc.y, dc.w, dc.h };
       +        XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
        
                gcv.foreground = col[ColFG];
       -        XChangeGC(dpy, dc.gc, GCForeground, &gcv);
       -        x = (dc.font.ascent + dc.font.descent + 2) / 4;
       -        r.x = dc.x + 1;
       -        r.y = dc.y + 1;
       +        XChangeGC(dpy, m->dc.gc, GCForeground, &gcv);
       +        x = (m->dc.font.ascent + m->dc.font.descent + 2) / 4;
       +        r.x = m->dc.x + 1;
       +        r.y = m->dc.y + 1;
                if(filled) {
                        r.width = r.height = x + 1;
       -                XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
       +                XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
                }
                else if(empty) {
                        r.width = r.height = x;
       -                XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
       +                XDrawRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
                }
        }
        
        void
       -drawtext(const char *text, unsigned long col[ColLast]) {
       +drawtext(Monitor *m, const char *text, unsigned long col[ColLast]) {
                int x, y, w, h;
                static char buf[256];
                unsigned int len, olen;
       -        XRectangle r = { dc.x, dc.y, dc.w, dc.h };
       +        XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
        
       -        XSetForeground(dpy, dc.gc, col[ColBG]);
       -        XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
       +        XSetForeground(dpy, m->dc.gc, col[ColBG]);
       +        XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
                if(!text)
                        return;
                w = 0;
       @@ -608,11 +651,11 @@ drawtext(const char *text, unsigned long col[ColLast]) {
                        len = sizeof buf - 1;
                memcpy(buf, text, len);
                buf[len] = 0;
       -        h = dc.font.ascent + dc.font.descent;
       -        y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
       -        x = dc.x + (h / 2);
       +        h = m->dc.font.ascent + m->dc.font.descent;
       +        y = m->dc.y + (m->dc.h / 2) - (h / 2) + m->dc.font.ascent;
       +        x = m->dc.x + (h / 2);
                /* shorten text if necessary */
       -        while(len && (w = textnw(buf, len)) > dc.w - h)
       +        while(len && (w = textnw(m, buf, len)) > m->dc.w - h)
                        buf[--len] = 0;
                if(len < olen) {
                        if(len > 1)
       @@ -622,13 +665,13 @@ drawtext(const char *text, unsigned long col[ColLast]) {
                        if(len > 3)
                                buf[len - 3] = '.';
                }
       -        if(w > dc.w)
       +        if(w > m->dc.w)
                        return; /* too long */
       -        XSetForeground(dpy, dc.gc, col[ColFG]);
       -        if(dc.font.set)
       -                XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
       +        XSetForeground(dpy, m->dc.gc, col[ColFG]);
       +        if(m->dc.font.set)
       +                XmbDrawString(dpy, m->dc.drawable, m->dc.font.set, m->dc.gc, x, y, buf, len);
                else
       -                XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
       +                XDrawString(dpy, m->dc.drawable, m->dc.gc, x, y, buf, len);
        }
        
        void *
       @@ -650,7 +693,7 @@ enternotify(XEvent *e) {
                if((c = getclient(ev->window)))
                        focus(c);
                else if(ev->window == root) {
       -                selscreen = True;
       +                selmonitor = True;
                        focus(NULL);
                }
        }
       @@ -670,7 +713,7 @@ expose(XEvent *e) {
                XExposeEvent *ev = &e->xexpose;
        
                if(ev->count == 0) {
       -                if(ev->window == barwin)
       +                if(ev->window == monitors[selmonitor].barwin)
                                drawbar();
                }
        }
       @@ -681,17 +724,18 @@ floating(void) { /* default floating layout */
        
                domwfact = dozoom = False;
                for(c = clients; c; c = c->next)
       -                if(isvisible(c))
       +                if(isvisible(c, &monitors[selmonitor]))
                                resize(c, c->x, c->y, c->w, c->h, True);
        }
        
        void
        focus(Client *c) {
       -        if((!c && selscreen) || (c && !isvisible(c)))
       -                for(c = stack; c && !isvisible(c); c = c->snext);
       +        Monitor *m = &monitors[monitorat(-1, -1)];
       +        if(!c || (c && !isvisible(c, m)))
       +                for(c = stack; c && !isvisible(c, m); c = c->snext);
                if(sel && sel != c) {
                        grabbuttons(sel, False);
       -                XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
       +                XSetWindowBorder(dpy, sel->win, monitors[sel->monitor].dc.norm[ColBorder]);
                }
                if(c) {
                        detachstack(c);
       @@ -700,14 +744,15 @@ focus(Client *c) {
                }
                sel = c;
                drawbar();
       -        if(!selscreen)
       -                return;
                if(c) {
       -                XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
       +                XSetWindowBorder(dpy, c->win, monitors[c->monitor].dc.sel[ColBorder]);
                        XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
       +                selmonitor = monitorat(c->x, c->y);
                }
       -        else
       +        else {
                        XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
       +                selmonitor = monitorat(-1, -1);
       +        }
        }
        
        void
       @@ -721,12 +766,13 @@ focusin(XEvent *e) { /* there are some broken focus acquiring clients */
        void
        focusnext(const char *arg) {
                Client *c;
       +        Monitor *m = &monitors[selmonitor];
        
                if(!sel)
                        return;
       -        for(c = sel->next; c && !isvisible(c); c = c->next);
       +        for(c = sel->next; c && !isvisible(c, m); c = c->next);
                if(!c)
       -                for(c = clients; c && !isvisible(c); c = c->next);
       +                for(c = clients; c && !isvisible(c, m); c = c->next);
                if(c) {
                        focus(c);
                        restack();
       @@ -736,13 +782,14 @@ focusnext(const char *arg) {
        void
        focusprev(const char *arg) {
                Client *c;
       +        Monitor *m = &monitors[selmonitor];
        
                if(!sel)
                        return;
       -        for(c = sel->prev; c && !isvisible(c); c = c->prev);
       +        for(c = sel->prev; c && !isvisible(c, m); c = c->prev);
                if(!c) {
                        for(c = clients; c && c->next; c = c->next);
       -                for(; c && !isvisible(c); c = c->prev);
       +                for(; c && !isvisible(c, m); c = c->prev);
                }
                if(c) {
                        focus(c);
       @@ -877,53 +924,53 @@ idxoftag(const char *tag) {
        }
        
        void
       -initfont(const char *fontstr) {
       +initfont(Monitor *m, const char *fontstr) {
                char *def, **missing;
                int i, n;
        
                missing = NULL;
       -        if(dc.font.set)
       -                XFreeFontSet(dpy, dc.font.set);
       -        dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
       +        if(m->dc.font.set)
       +                XFreeFontSet(dpy, m->dc.font.set);
       +        m->dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
                if(missing) {
                        while(n--)
                                fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
                        XFreeStringList(missing);
                }
       -        if(dc.font.set) {
       +        if(m->dc.font.set) {
                        XFontSetExtents *font_extents;
                        XFontStruct **xfonts;
                        char **font_names;
       -                dc.font.ascent = dc.font.descent = 0;
       -                font_extents = XExtentsOfFontSet(dc.font.set);
       -                n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
       -                for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
       -                        if(dc.font.ascent < (*xfonts)->ascent)
       -                                dc.font.ascent = (*xfonts)->ascent;
       -                        if(dc.font.descent < (*xfonts)->descent)
       -                                dc.font.descent = (*xfonts)->descent;
       +                m->dc.font.ascent = m->dc.font.descent = 0;
       +                font_extents = XExtentsOfFontSet(m->dc.font.set);
       +                n = XFontsOfFontSet(m->dc.font.set, &xfonts, &font_names);
       +                for(i = 0, m->dc.font.ascent = 0, m->dc.font.descent = 0; i < n; i++) {
       +                        if(m->dc.font.ascent < (*xfonts)->ascent)
       +                                m->dc.font.ascent = (*xfonts)->ascent;
       +                        if(m->dc.font.descent < (*xfonts)->descent)
       +                                m->dc.font.descent = (*xfonts)->descent;
                                xfonts++;
                        }
                }
                else {
       -                if(dc.font.xfont)
       -                        XFreeFont(dpy, dc.font.xfont);
       -                dc.font.xfont = NULL;
       -                if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
       -                && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
       +                if(m->dc.font.xfont)
       +                        XFreeFont(dpy, m->dc.font.xfont);
       +                m->dc.font.xfont = NULL;
       +                if(!(m->dc.font.xfont = XLoadQueryFont(dpy, fontstr))
       +                && !(m->dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
                                eprint("error, cannot load font: '%s'\n", fontstr);
       -                dc.font.ascent = dc.font.xfont->ascent;
       -                dc.font.descent = dc.font.xfont->descent;
       +                m->dc.font.ascent = m->dc.font.xfont->ascent;
       +                m->dc.font.descent = m->dc.font.xfont->descent;
                }
       -        dc.font.height = dc.font.ascent + dc.font.descent;
       +        m->dc.font.height = m->dc.font.ascent + m->dc.font.descent;
        }
        
        Bool
       -isoccupied(unsigned int t) {
       +isoccupied(Monitor *m, unsigned int t) {
                Client *c;
        
                for(c = clients; c; c = c->next)
       -                if(c->tags[t])
       +                if(c->tags[t] && c->monitor == m->id)
                                return True;
                return False;
        }
       @@ -944,11 +991,11 @@ isprotodel(Client *c) {
        }
        
        Bool
       -isvisible(Client *c) {
       +isvisible(Client *c, Monitor *m) {
                unsigned int i;
        
                for(i = 0; i < LENGTH(tags); i++)
       -                if(c->tags[i] && seltags[i])
       +                if(c->tags[i] && monitors[c->monitor].seltags[i] && m->id == c->monitor)
                                return True;
                return False;
        }
       @@ -994,7 +1041,7 @@ leavenotify(XEvent *e) {
                XCrossingEvent *ev = &e->xcrossing;
        
                if((ev->window == root) && !ev->same_screen) {
       -                selscreen = False;
       +                selmonitor = False;
                        focus(NULL);
                }
        }
       @@ -1009,30 +1056,40 @@ manage(Window w, XWindowAttributes *wa) {
                c = emallocz(sizeof(Client));
                c->tags = emallocz(sizeof seltags);
                c->win = w;
       -        c->x = wa->x;
       -        c->y = wa->y;
       +
       +        applyrules(c);
       +        Monitor *m = &monitors[c->monitor];
       +
       +        c->x = wa->x+m->sx;
       +        c->y = wa->y+m->sy;
                c->w = wa->width;
                c->h = wa->height;
                c->oldborder = wa->border_width;
       -        if(c->w == sw && c->h == sh) {
       -                c->x = sx;
       -                c->y = sy;
       +
       +        if (monitorat(c->x, c->y) != c->monitor) {
       +                c->x = m->sx;
       +                c->y = m->sy;
       +        }
       +
       +        if(c->w == m->sw && c->h == m->sh) {
       +                c->x = m->sx;
       +                c->y = m->sy;
                        c->border = wa->border_width;
                }
                else {
       -                if(c->x + c->w + 2 * c->border > wax + waw)
       -                        c->x = wax + waw - c->w - 2 * c->border;
       -                if(c->y + c->h + 2 * c->border > way + wah)
       -                        c->y = way + wah - c->h - 2 * c->border;
       -                if(c->x < wax)
       -                        c->x = wax;
       -                if(c->y < way)
       -                        c->y = way;
       +                if(c->x + c->w + 2 * c->border > m->wax + m->waw)
       +                        c->x = m->wax + m->waw - c->w - 2 * c->border;
       +                if(c->y + c->h + 2 * c->border > m->way + m->wah)
       +                        c->y = m->way + m->wah - c->h - 2 * c->border;
       +                if(c->x < m->wax)
       +                        c->x = m->wax;
       +                if(c->y < m->way)
       +                        c->y = m->way;
                        c->border = BORDERPX;
                }
                wc.border_width = c->border;
                XConfigureWindow(dpy, w, CWBorderWidth, &wc);
       -        XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
       +        XSetWindowBorder(dpy, w, m->dc.norm[ColBorder]);
                configure(c); /* propagates border_width, if size doesn't change */
                updatesizehints(c);
                XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
       @@ -1042,7 +1099,6 @@ manage(Window w, XWindowAttributes *wa) {
                        for(t = clients; t && t->win != trans; t = t->next);
                if(t)
                        memcpy(c->tags, t->tags, sizeof seltags);
       -        applyrules(c);
                if(!c->isfloating)
                        c->isfloating = (rettrans == Success) || c->isfixed;
                attach(c);
       @@ -1078,9 +1134,11 @@ maprequest(XEvent *e) {
        
        void
        maximize(const char *arg) {
       +/*
                if(!sel || (!sel->isfloating && layout->arrange != floating))
                        return;
                resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
       +*/
        }
        
        void
       @@ -1111,23 +1169,25 @@ movemouse(Client *c) {
                                XSync(dpy, False);
                                nx = ocx + (ev.xmotion.x - x1);
                                ny = ocy + (ev.xmotion.y - y1);
       -                        if(abs(wax + nx) < SNAP)
       -                                nx = wax;
       -                        else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
       -                                nx = wax + waw - c->w - 2 * c->border;
       -                        if(abs(way - ny) < SNAP)
       -                                ny = way;
       -                        else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
       -                                ny = way + wah - c->h - 2 * c->border;
       +                        Monitor *m = &monitors[monitorat(nx, ny)];
       +                        if(abs(m->wax - nx) < SNAP)
       +                                nx = m->wax;
       +                        else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
       +                                nx = m->wax + m->waw - c->w - 2 * c->border;
       +                        if(abs(m->way - ny) < SNAP)
       +                                ny = m->way;
       +                        else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
       +                                ny = m->way + m->wah - c->h - 2 * c->border;
                                resize(c, nx, ny, c->w, c->h, False);
       +                        memcpy(c->tags, monitors[monitorat(nx, ny)].seltags, sizeof seltags);
                                break;
                        }
                }
        }
        
        Client *
       -nexttiled(Client *c) {
       -        for(; c && (c->isfloating || !isvisible(c)); c = c->next);
       +nexttiled(Client *c, Monitor *m) {
       +        for(; c && (c->isfloating || !isvisible(c, m)); c = c->next);
                return c;
        }
        
       @@ -1179,6 +1239,8 @@ reapply(const char *arg) {
        void
        resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
                XWindowChanges wc;
       +        Monitor scr = monitors[monitorat(x, y)];
       +        c->monitor = scr.id;
        
                if(sizehints) {
                        /* set minimum possible */
       @@ -1220,15 +1282,17 @@ resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
                }
                if(w <= 0 || h <= 0)
                        return;
       -        /* offscreen appearance fixes */
       -        if(x > sw)
       -                x = sw - w - 2 * c->border;
       -        if(y > sh)
       -                y = sh - h - 2 * c->border;
       -        if(x + w + 2 * c->border < sx)
       -                x = sx;
       -        if(y + h + 2 * c->border < sy)
       -                y = sy;
       +        /* TODO: offscreen appearance fixes */
       +        /*
       +        if(x > scr.sw)
       +                x = scr.sw - w - 2 * c->border;
       +        if(y > scr.sh)
       +                y = scr.sh - h - 2 * c->border;
       +        if(x + w + 2 * c->border < scr.sx)
       +                x = scr.sx;
       +        if(y + h + 2 * c->border < scr.sy)
       +                y = scr.sy;
       +        */
                if(c->x != x || c->y != y || c->w != w || c->h != h) {
                        c->x = wc.x = x;
                        c->y = wc.y = y;
       @@ -1284,24 +1348,27 @@ restack(void) {
                Client *c;
                XEvent ev;
                XWindowChanges wc;
       +        int s;
        
                drawbar();
                if(!sel)
                        return;
       -        if(sel->isfloating || (layout->arrange == floating))
       +        if(sel->isfloating || (monitors[selmonitor].layout->arrange == floating))
                        XRaiseWindow(dpy, sel->win);
       -        if(layout->arrange != floating) {
       +        if(monitors[selmonitor].layout->arrange != floating) {
                        wc.stack_mode = Below;
       -                wc.sibling = barwin;
       +                wc.sibling = monitors[selmonitor].barwin;
                        if(!sel->isfloating) {
                                XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
                                wc.sibling = sel->win;
                        }
       -                for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
       -                        if(c == sel)
       -                                continue;
       -                        XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
       -                        wc.sibling = c->win;
       +                for(s = 0; s < mcount; s++) {
       +                        for(c = nexttiled(clients, &monitors[s]); c; c = nexttiled(c->next, &monitors[s])) {
       +                                if(c == sel)
       +                                        continue;
       +                                XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
       +                                wc.sibling = c->win;
       +                        }
                        }
                }
                XSync(dpy, False);
       @@ -1406,10 +1473,12 @@ setclientstate(Client *c, long state) {
        void
        setlayout(const char *arg) {
                unsigned int i;
       +        Monitor *m = &monitors[monitorat(-1, -1)];
        
                if(!arg) {
       -                if(++layout == &layouts[LENGTH(layouts)])
       -                        layout = &layouts[0];
       +                m->layout++;
       +                if(m->layout == &layouts[LENGTH(layouts)])
       +                        m->layout = &layouts[0];
                }
                else {
                        for(i = 0; i < LENGTH(layouts); i++)
       @@ -1417,7 +1486,7 @@ setlayout(const char *arg) {
                                        break;
                        if(i == LENGTH(layouts))
                                return;
       -                layout = &layouts[i];
       +                m->layout = &layouts[i];
                }
                if(sel)
                        arrange();
       @@ -1429,31 +1498,34 @@ void
        setmwfact(const char *arg) {
                double delta;
        
       +        Monitor *m = &monitors[monitorat(-1, -1)];
       +
                if(!domwfact)
                        return;
                /* arg handling, manipulate mwfact */
                if(arg == NULL)
       -                mwfact = MWFACT;
       +                m->mwfact = MWFACT;
                else if(sscanf(arg, "%lf", &delta) == 1) {
                        if(arg[0] == '+' || arg[0] == '-')
       -                        mwfact += delta;
       +                        m->mwfact += delta;
                        else
       -                        mwfact = delta;
       -                if(mwfact < 0.1)
       -                        mwfact = 0.1;
       -                else if(mwfact > 0.9)
       -                        mwfact = 0.9;
       +                        m->mwfact = delta;
       +                if(m->mwfact < 0.1)
       +                        m->mwfact = 0.1;
       +                else if(m->mwfact > 0.9)
       +                        m->mwfact = 0.9;
                }
                arrange();
        }
        
        void
        setup(void) {
       -        int d;
       -        unsigned int i, j, mask;
       -        Window w;
       +        unsigned int i, j, k;
                XModifierKeymap *modmap;
                XSetWindowAttributes wa;
       +        int s = 1;
       +        GC g;
       +        XineramaScreenInfo *info = NULL;
        
                /* init atoms */
                wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
       @@ -1470,10 +1542,6 @@ setup(void) {
                cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
                cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
        
       -        /* init geometry */
       -        sx = sy = 0;
       -        sw = DisplayWidth(dpy, screen);
       -        sh = DisplayHeight(dpy, screen);
        
                /* init modifier map */
                modmap = XGetModifierMapping(dpy);
       @@ -1496,49 +1564,76 @@ setup(void) {
                grabkeys();
        
                /* init tags */
       -        memcpy(prevtags, seltags, sizeof seltags);
                compileregs();
        
       -        /* init appearance */
       -        dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
       -        dc.norm[ColBG] = getcolor(NORMBGCOLOR);
       -        dc.norm[ColFG] = getcolor(NORMFGCOLOR);
       -        dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
       -        dc.sel[ColBG] = getcolor(SELBGCOLOR);
       -        dc.sel[ColFG] = getcolor(SELFGCOLOR);
       -        initfont(FONT);
       -        dc.h = bh = dc.font.height + 2;
       -
       -        /* init layouts */
       -        mwfact = MWFACT;
       -        layout = &layouts[0];
       -        for(blw = i = 0; i < LENGTH(layouts); i++) {
       -                j = textw(layouts[i].symbol);
       -                if(j > blw)
       -                        blw = j;
       +        if (XineramaIsActive(dpy)) {
       +                info = XineramaQueryScreens(dpy, &s);
                }
        
       -        /* init bar */
       -        bpos = BARPOS;
       -        wa.override_redirect = 1;
       -        wa.background_pixmap = ParentRelative;
       -        wa.event_mask = ButtonPressMask | ExposureMask;
       -        barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
       -                        DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
       -                        CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
       -        XDefineCursor(dpy, barwin, cursor[CurNormal]);
       -        updatebarpos();
       -        XMapRaised(dpy, barwin);
       -        strcpy(stext, "dwm-"VERSION);
       -        dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
       -        dc.gc = XCreateGC(dpy, root, 0, 0);
       -        XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
       -        if(!dc.font.set)
       -                XSetFont(dpy, dc.gc, dc.font.xfont->fid);
       +        monitors = emallocz(s*sizeof(Monitor));
       +        mcount = s;
        
       -        /* multihead support */
       -        selscreen = XQueryPointer(dpy, root, &w, &w, &d, &d, &d, &d, &mask);
       +        for(i = 0; i < s; i++) {
       +                /* init geometry */
       +                if (mcount != 1) {
       +                        monitors[i].sx = info[i].x_org;
       +                        monitors[i].sy = info[i].y_org;
       +                        monitors[i].sw = info[i].width;
       +                        monitors[i].sh = info[i].height;
       +                }
       +                else {
       +                        monitors[i].sx = 0;
       +                        monitors[i].sy = 0;
       +                        monitors[i].sw = DisplayWidth(dpy, screen);
       +                        monitors[i].sh = DisplayHeight(dpy, screen);
       +                }
       +
       +                monitors[i].id = i;
       +                monitors[i].seltags = emallocz(LENGTH(tags)*sizeof(char*));
       +                monitors[i].prevtags = emallocz(LENGTH(tags)*sizeof(char*));
       +
       +                memcpy(monitors[i].seltags, seltags, sizeof seltags);
       +                memcpy(monitors[i].prevtags, seltags, sizeof seltags);
       +
       +                /* init appearance */
       +                monitors[i].dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
       +                monitors[i].dc.norm[ColBG] = getcolor(NORMBGCOLOR);
       +                monitors[i].dc.norm[ColFG] = getcolor(NORMFGCOLOR);
       +                monitors[i].dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
       +                monitors[i].dc.sel[ColBG] = getcolor(SELBGCOLOR);
       +                monitors[i].dc.sel[ColFG] = getcolor(SELFGCOLOR);
       +                initfont(&(monitors[i]), FONT);
       +                monitors[i].dc.h = bh = monitors[i].dc.font.height + 2;
       +
       +                /* init layouts */
       +                monitors[i].mwfact = MWFACT;
       +                monitors[i].layout = &layouts[0];
       +                for(blw = k = 0; k < LENGTH(layouts); k++) {
       +                        j = textw(&monitors[i], layouts[k].symbol);
       +                        if(j > blw)
       +                                blw = j;
       +                }
        
       +                bpos = BARPOS;
       +                wa.override_redirect = 1;
       +                wa.background_pixmap = ParentRelative;
       +                wa.event_mask = ButtonPressMask | ExposureMask;
       +
       +                /* init bars */
       +                monitors[i].barwin = XCreateWindow(dpy, root, monitors[i].sx, monitors[i].sy, monitors[i].sw, bh, 0,
       +                                DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
       +                                CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
       +                XDefineCursor(dpy, monitors[i].barwin, cursor[CurNormal]);
       +                updatebarpos(&monitors[i]);
       +                XMapRaised(dpy, monitors[i].barwin);
       +                strcpy(stext, "dwm-"VERSION);
       +                monitors[i].dc.drawable = XCreatePixmap(dpy, root, monitors[i].sw, bh, DefaultDepth(dpy, screen));
       +                g = XCreateGC(dpy, root, 0, 0);
       +                monitors[i].dc.gc = XCreateGC(dpy, root, 0, 0);
       +                XSetLineAttributes(dpy, monitors[i].dc.gc, 1, LineSolid, CapButt, JoinMiter);
       +                if(!monitors[i].dc.font.set)
       +                        XSetFont(dpy, monitors[i].dc.gc, monitors[i].dc.font.xfont->fid);
       +        }
        }
        
        void
       @@ -1578,71 +1673,78 @@ tag(const char *arg) {
        }
        
        unsigned int
       -textnw(const char *text, unsigned int len) {
       +textnw(Monitor *m, const char *text, unsigned int len) {
                XRectangle r;
        
       -        if(dc.font.set) {
       -                XmbTextExtents(dc.font.set, text, len, NULL, &r);
       +        if(m->dc.font.set) {
       +                XmbTextExtents(m->dc.font.set, text, len, NULL, &r);
                        return r.width;
                }
       -        return XTextWidth(dc.font.xfont, text, len);
       +        return XTextWidth(m->dc.font.xfont, text, len);
        }
        
        unsigned int
       -textw(const char *text) {
       -        return textnw(text, strlen(text)) + dc.font.height;
       +textw(Monitor *m, const char *text) {
       +        return textnw(m, text, strlen(text)) + m->dc.font.height;
        }
        
        void
        tile(void) {
                unsigned int i, n, nx, ny, nw, nh, mw, th;
       +        int s;
                Client *c, *mc;
        
                domwfact = dozoom = True;
       -        for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
       -                n++;
       -
       -        /* window geoms */
       -        mw = (n == 1) ? waw : mwfact * waw;
       -        th = (n > 1) ? wah / (n - 1) : 0;
       -        if(n > 1 && th < bh)
       -                th = wah;
        
       -        nx = wax;
       -        ny = way;
                nw = 0; /* gcc stupidity requires this */
       -        for(i = 0, c = mc = nexttiled(clients); c; c = nexttiled(c->next), i++) {
       -                if(i == 0) { /* master */
       -                        nw = mw - 2 * c->border;
       -                        nh = wah - 2 * c->border;
       -                }
       -                else {  /* tile window */
       -                        if(i == 1) {
       -                                ny = way;
       -                                nx += mc->w + 2 * mc->border;
       -                                nw = waw - nx - 2 * c->border;
       +
       +        for (s = 0; s < mcount; s++) {
       +                Monitor *m = &monitors[s];
       +
       +                for(n = 0, c = nexttiled(clients, m); c; c = nexttiled(c->next, m))
       +                        n++;
       +
       +                for(i = 0, c = mc = nexttiled(clients, m); c; c = nexttiled(c->next, m)) {
       +                        /* window geoms */
       +                        mw = (n == 1) ? m->waw : m->mwfact * m->waw;
       +                        th = (n > 1) ? m->wah / (n - 1) : 0;
       +                        if(n > 1 && th < bh)
       +                                th = m->wah;
       +                        if(i == 0) { /* master */
       +                                nx = m->wax;
       +                                ny = m->way;
       +                                nw = mw - 2 * c->border;
       +                                nh = m->wah - 2 * c->border;
                                }
       -                        if(i + 1 == n) /* remainder */
       -                                nh = (way + wah) - ny - 2 * c->border;
       -                        else
       -                                nh = th - 2 * c->border;
       +                        else {  /* tile window */
       +                                if(i == 1) {
       +                                        ny = m->way;
       +                                        nx += mc->w + 2 * mc->border;
       +                                        nw = m->waw - mw - 2 * c->border;
       +                                }
       +                                if(i + 1 == n) /* remainder */
       +                                        nh = (m->way + m->wah) - ny - 2 * c->border;
       +                                else
       +                                        nh = th - 2 * c->border;
       +                        }
       +                        resize(c, nx, ny, nw, nh, RESIZEHINTS);
       +                        if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
       +                                /* client doesn't accept size constraints */
       +                                resize(c, nx, ny, nw, nh, False);
       +                        if(n > 1 && th != m->wah)
       +                                ny = c->y + c->h + 2 * c->border;
       +
       +                        i++;
                        }
       -                resize(c, nx, ny, nw, nh, RESIZEHINTS);
       -                if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
       -                        /* client doesn't accept size constraints */
       -                        resize(c, nx, ny, nw, nh, False);
       -                if(n > 1 && th != wah)
       -                        ny = c->y + c->h + 2 * c->border;
                }
        }
       -
        void
        togglebar(const char *arg) {
                if(bpos == BarOff)
                        bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
                else
                        bpos = BarOff;
       -        updatebarpos();
       +        updatebarpos(&monitors[monitorat(-1,-1)]);
                arrange();
        }
        
       @@ -1674,11 +1776,13 @@ void
        toggleview(const char *arg) {
                unsigned int i, j;
        
       +        Monitor *m = &monitors[monitorat(-1, -1)];
       +
                i = idxoftag(arg);
       -        seltags[i] = !seltags[i];
       -        for(j = 0; j < LENGTH(tags) && !seltags[j]; j++);
       +        m->seltags[i] = !m->seltags[i];
       +        for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
                if(j == LENGTH(tags))
       -                seltags[i] = True; /* at least one tag must be viewed */
       +                m->seltags[i] = True; /* at least one tag must be viewed */
                arrange();
        }
        
       @@ -1723,25 +1827,25 @@ unmapnotify(XEvent *e) {
        }
        
        void
       -updatebarpos(void) {
       +updatebarpos(Monitor *s) {
                XEvent ev;
        
       -        wax = sx;
       -        way = sy;
       -        wah = sh;
       -        waw = sw;
       +        s->wax = s->sx;
       +        s->way = s->sy;
       +        s->wah = s->sh;
       +        s->waw = s->sw;
                switch(bpos) {
                default:
       -                wah -= bh;
       -                way += bh;
       -                XMoveWindow(dpy, barwin, sx, sy);
       +                s->wah -= bh;
       +                s->way += bh;
       +                XMoveWindow(dpy, s->barwin, s->sx, s->sy);
                        break;
                case BarBot:
       -                wah -= bh;
       -                XMoveWindow(dpy, barwin, sx, sy + wah);
       +                s->wah -= bh;
       +                XMoveWindow(dpy, s->barwin, s->sx, s->sy + s->wah);
                        break;
                case BarOff:
       -                XMoveWindow(dpy, barwin, sx, sy - bh);
       +                XMoveWindow(dpy, s->barwin, s->sx, s->sy - bh);
                        break;
                }
                XSync(dpy, False);
       @@ -1842,10 +1946,12 @@ void
        view(const char *arg) {
                unsigned int i;
        
       -        memcpy(prevtags, seltags, sizeof seltags);
       +        Monitor *m = &monitors[monitorat(-1, -1)];
       +
       +        memcpy(m->prevtags, seltags, sizeof seltags);
                for(i = 0; i < LENGTH(tags); i++)
       -                seltags[i] = (NULL == arg);
       -        seltags[idxoftag(arg)] = True;
       +                m->seltags[i] = (NULL == arg);
       +        m->seltags[idxoftag(arg)] = True;
                arrange();
        }
        
       @@ -1853,9 +1959,11 @@ void
        viewprevtag(const char *arg) {
                static Bool tmp[LENGTH(tags)];
        
       -        memcpy(tmp, seltags, sizeof seltags);
       -        memcpy(seltags, prevtags, sizeof seltags);
       -        memcpy(prevtags, tmp, sizeof seltags);
       +        Monitor *m = &monitors[monitorat(-1, -1)];
       +
       +        memcpy(tmp, m->seltags, sizeof seltags);
       +        memcpy(m->seltags, m->prevtags, sizeof seltags);
       +        memcpy(m->prevtags, tmp, sizeof seltags);
                arrange();
        }
        
       @@ -1865,8 +1973,8 @@ zoom(const char *arg) {
        
                if(!sel || !dozoom || sel->isfloating)
                        return;
       -        if((c = sel) == nexttiled(clients))
       -                if(!(c = nexttiled(c->next)))
       +        if((c = sel) == nexttiled(clients, &monitors[c->monitor]))
       +                if(!(c = nexttiled(c->next, &monitors[c->monitor])))
                                return;
                detach(c);
                attach(c);
       @@ -1875,6 +1983,48 @@ zoom(const char *arg) {
        }
        
        int
       +monitorat(int x, int y) {
       +        int i;
       +
       +        if(!XineramaIsActive(dpy))
       +                return 0;
       +
       +        if (x < 0 || y < 0) {
       +                Window win;
       +                unsigned int mask;
       +                XQueryPointer(dpy, root, &win, &win, &x, &y, &i, &i, &mask);
       +        }
       +
       +        for(i = 0; i < mcount; i++)
       +                if((x < 0 || (x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw))
       +                                && (y < 0 || (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)))
       +                {
       +                        return i;
       +                }
       +        return 0;
       +}
       +
       +void
       +movetomonitor(const char *arg) {
       +        if (sel) {
       +                sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
       +
       +                memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof seltags);
       +                resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
       +                arrange();
       +        }
       +}
       +
       +void
       +selectmonitor(const char *arg) {
       +        Monitor *m = &monitors[arg ? atoi(arg) : (monitorat(-1, -1)+1) % mcount];
       +
       +        XWarpPointer(dpy, None, root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
       +        focus(NULL);
       +}
       +
       +
       +int
        main(int argc, char *argv[]) {
                if(argc == 2 && !strcmp("-v", argv[1]))
                        eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "