dwm

my fork of dwm
Index Commits Files Refs README LICENSE
commit 985e3305249987739867f33879ddbb8bc3028e00
parent 5f19423c7bd2aa1ebb3010af15bebffbc3a9cbc3
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:
Mconfig.mk | 2+-
Mdwm.c | 756+++++++++++++++++++++++++++++++++++++++++++++++--------------------------------
2 files changed, 454 insertions(+), 304 deletions(-)
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}\"
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, "