dwm

my fork of dwm
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commit 78f56672b5164f2d8f7ecabc3be0a9bbe0ae98bf
parent c2fff604a760d271c7e9311c2927954e87ac3a6e
Author: Anselm R Garbe <garbeam@gmail.com>
Date:   Mon, 22 Jun 2009 14:58:08 +0100

changes monitor structure to be a list
Diffstat:
Mdwm.c | 302++++++++++++++++++++++++++++++++++++++++++++-----------------------------------
1 file changed, 169 insertions(+), 133 deletions(-)
diff --git a/dwm.c b/dwm.c
@@ -44,7 +44,7 @@
 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 #define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask))
 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
-#define ISVISIBLE(M, C)         ((M) == (&mon[C->mon]) && (C->tags & M->tagset[M->seltags]))
+#define ISVISIBLE(M, C)         ((M) == (C->m) && (C->tags & M->tagset[M->seltags]))
 #define LENGTH(X)               (sizeof X / sizeof X[0])
 #define MAX(A, B)               ((A) > (B) ? (A) : (B))
 #define MIN(A, B)               ((A) < (B) ? (A) : (B))
@@ -77,6 +77,7 @@ typedef struct {
     const Arg arg;
 } Button;
 
+typedef struct Monitor Monitor;
 typedef struct Client Client;
 struct Client {
     char name[256];
@@ -85,10 +86,10 @@ struct Client {
     int basew, baseh, incw, inch, maxw, maxh, minw, minh;
     int bw, oldbw;
     unsigned int tags;
-    unsigned int mon;
     Bool isfixed, isfloating, isurgent;
     Client *next;
     Client *snext;
+    Monitor *m;
     Window win;
 };
 
@@ -115,7 +116,12 @@ typedef struct {
 } Key;
 
 typedef struct {
-    char symbol[4];
+    const char *symbol;
+    void (*arrange)(Monitor *);
+} Layout;
+
+struct Monitor {
+    int screen_number;
     float mfact;
     int by, btx;          /* bar geometry */
     int wx, wy, ww, wh;   /* window area  */
@@ -125,12 +131,8 @@ typedef struct {
     Bool showbar;
     Bool topbar;
     Window barwin;
-} Monitor;
-
-typedef struct {
-    const char *symbol;
-    void (*arrange)(Monitor *);
-} Layout;
+    Monitor *next;
+};
 
 typedef struct {
     const char *class;
@@ -149,6 +151,7 @@ static void attachstack(Client *c);
 static void buttonpress(XEvent *e);
 static void checkotherwm(void);
 static void cleanup(void);
+static void cleanupmons(void);
 static void clearurgent(Client *c);
 static void configure(Client *c);
 static void configurenotify(XEvent *e);
@@ -206,6 +209,7 @@ static void toggleview(const Arg *arg);
 static void unmanage(Client *c);
 static void unmapnotify(XEvent *e);
 static void updategeom(void);
+static void updatebars(void);
 static void updatenumlockmask(void);
 static void updatesizehints(Client *c);
 static void updatestatus(void);
@@ -252,8 +256,7 @@ static Cursor cursor[CurLast];
 static Display *dpy;
 static DC dc;
 static Layout *lt[] = { NULL, NULL };
-static Monitor *mon = NULL, *selmon = NULL;
-static unsigned int nmons = 0;
+static Monitor *mons = NULL, *selmon = NULL;
 static Window root;
 /* configuration, allows nested code to access above variables */
 #include "config.h"
@@ -285,7 +288,7 @@ applyrules(Client *c) {
         if(ch.res_name)
             XFree(ch.res_name);
     }
-    c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : mon[c->mon].tagset[mon[c->mon].seltags];
+    c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->m->tagset[c->m->seltags];
 }
 
 Bool
@@ -355,13 +358,14 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h) {
 
 void
 arrange(void) {
-    unsigned int i;
+    Monitor *m;
+
     showhide(stack);
     focus(NULL);
-    for(i = 0; i < nmons; i++) {
-        if(lt[mon[i].sellt]->arrange)
-            lt[mon[i].sellt]->arrange(&mon[i]);
-        restack(&mon[i]);
+    for(m = mons; m; m = m->next) {
+        if(lt[m->sellt]->arrange)
+            lt[m->sellt]->arrange(m);
+        restack(m);
     }
 }
 
@@ -429,7 +433,6 @@ checkotherwm(void) {
 
 void
 cleanup(void) {
-    unsigned int i;
     Arg a = {.ui = ~0};
     Layout foo = { "", NULL };
 
@@ -447,14 +450,25 @@ cleanup(void) {
     XFreeCursor(dpy, cursor[CurNormal]);
     XFreeCursor(dpy, cursor[CurResize]);
     XFreeCursor(dpy, cursor[CurMove]);
-    for(i = 0; i < nmons; i++)
-        XDestroyWindow(dpy, mon[i].barwin);
-    free(mon);
+    cleanupmons();
     XSync(dpy, False);
     XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
 }
 
 void
+cleanupmons(void) {
+    Monitor *m;
+
+    while(mons) {
+        m = mons->next;
+        XUnmapWindow(dpy, mons->barwin);
+        XDestroyWindow(dpy, mons->barwin);
+        free(mons);
+        mons = m;
+    }
+}
+
+void
 clearurgent(Client *c) {
     XWMHints *wmh;
 
@@ -486,7 +500,7 @@ configure(Client *c) {
 
 void
 configurenotify(XEvent *e) {
-    unsigned int i;
+    Monitor *m;
     XConfigureEvent *ev = &e->xconfigure;
 
     if(ev->window == root && (ev->width != sw || ev->height != sh)) {
@@ -496,8 +510,9 @@ configurenotify(XEvent *e) {
         if(dc.drawable != 0)
             XFreePixmap(dpy, dc.drawable);
         dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
-        for(i = 0; i < nmons; i++)
-            XMoveResizeWindow(dpy, mon[i].barwin, mon[i].wx, mon[i].by, mon[i].ww, bh);
+        updatebars();
+        for(m = mons; m; m = m->next)
+            XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
         arrange();
     }
 }
@@ -526,7 +541,7 @@ configurerequest(XEvent *e) {
                 c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
             if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
                 configure(c);
-            if(ISVISIBLE((&mon[c->mon]), c))
+            if(ISVISIBLE((c->m), c))
                 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
         }
         else
@@ -588,7 +603,7 @@ drawbar(Monitor *m) {
     Client *c;
 
     for(c = clients; c; c = c->next) {
-        if(m == &mon[c->mon]) {
+        if(m == c->m) {
             occ |= c->tags;
             if(c->isurgent)
                 urg |= c->tags;
@@ -598,9 +613,11 @@ drawbar(Monitor *m) {
     dc.x = 0;
 #ifdef XINERAMA
     {
+        /*
         dc.w = TEXTW(m->symbol);
-        drawtext(m->symbol, selmon == m ? dc.sel : dc.norm, False);
+        drawtext(NULL, selmon == m ? dc.sel : dc.norm, False);
         dc.x += dc.w;
+        */
     }
 #endif /* XINERAMA */
     m->btx = dc.x;
@@ -648,10 +665,10 @@ drawbar(Monitor *m) {
 
 void
 drawbars() {
-    unsigned int i;
+    Monitor *m;
 
-    for(i = 0; i < nmons; i++)
-        drawbar(&mon[i]);
+    for(m = mons; m; m = m->next)
+        drawbar(m);
 }
 
 void
@@ -718,20 +735,20 @@ enternotify(XEvent *e) {
 
 void
 expose(XEvent *e) {
-    unsigned int i;
+    Monitor *m;
     XExposeEvent *ev = &e->xexpose;
 
     if(ev->count == 0)
-        for(i = 0; i < nmons; i++)
-            if(ev->window == mon[i].barwin) {
-                drawbar(&mon[i]);
+        for(m = mons; m; m = m->next)
+            if(ev->window == m->barwin) {
+                drawbar(m);
                 break;
             }
 }
 
 void
 focus(Client *c) {
-    if(!c || !ISVISIBLE((&mon[c->mon]), c))
+    if(!c || !ISVISIBLE((c->m), c))
         for(c = stack; c && !ISVISIBLE(selmon, c); c = c->snext);
     if(sel && sel != c) {
         grabbuttons(sel, False);
@@ -763,11 +780,16 @@ focusin(XEvent *e) { /* there are some broken focus acquiring clients */
 #ifdef XINERAMA
 void
 focusmon(const Arg *arg) {
-    if(arg->ui >= nmons)
-        return;
-    selmon = &mon[arg->ui];
-    focus(NULL);
-    drawbars();
+    unsigned int i;
+    Monitor *m; 
+
+    for(i = 0, m = mons; m; m = m->next, i++)
+        if(i == arg->ui) {
+            selmon = m;
+            focus(NULL);
+            drawbars();
+            break;
+        }
 }
 #endif /* XINERAMA */
 
@@ -993,7 +1015,7 @@ manage(Window w, XWindowAttributes *wa) {
         die("fatal: could not malloc() %u bytes\n", sizeof(Client));
     *c = cz;
     c->win = w;
-    for(c->mon = 0; selmon != &mon[c->mon]; c->mon++);
+    c->m = selmon;
 
     /* geometry */
     c->x = wa->x;
@@ -1356,7 +1378,7 @@ setup(void) {
     netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
 
     /* init cursors */
-    wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
+    cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
     cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
     cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
 
@@ -1374,22 +1396,11 @@ setup(void) {
         XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 
     /* init bars */
-    wa.override_redirect = True;
-    wa.background_pixmap = ParentRelative;
-    wa.event_mask = ButtonPressMask|ExposureMask;
     for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
         w = TEXTW(layouts[i].symbol);
         blw = MAX(blw, w);
     }
-
-    for(i = 0; i < nmons; i++) {
-        mon[i].barwin = XCreateWindow(dpy, root, mon[i].wx, mon[i].by, mon[i].ww, bh, 0, DefaultDepth(dpy, screen),
-
-                                      CopyFromParent, DefaultVisual(dpy, screen),
-                                      CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
-        XDefineCursor(dpy, mon[i].barwin, cursor[CurNormal]);
-        XMapRaised(dpy, mon[i].barwin);
-    }
+    updatebars();
     updatestatus();
 
     /* EWMH support per view */
@@ -1410,9 +1421,9 @@ void
 showhide(Client *c) {
     if(!c)
         return;
-    if(ISVISIBLE((&mon[c->mon]), c)) { /* show clients top down */
+    if(ISVISIBLE((c->m), c)) { /* show clients top down */
         XMoveWindow(dpy, c->win, c->x, c->y);
-        if(!lt[mon[c->mon].sellt]->arrange || c->isfloating)
+        if(!lt[c->m->sellt]->arrange || c->isfloating)
             resize(c, c->x, c->y, c->w, c->h);
         showhide(c->snext);
     }
@@ -1453,10 +1464,15 @@ tag(const Arg *arg) {
 #ifdef XINERAMA
 void
 tagmon(const Arg *arg) {
-    if(!sel || arg->ui >= nmons)
-        return;
-    sel->mon = arg->ui;
-    arrange();
+    unsigned int i;
+    Monitor *m;
+
+    for(i = 0, m = mons; m; m = m->next, i++)
+        if(i == arg->ui) {
+            sel->m = m;
+            arrange();
+            break;
+        }
 }
 #endif /* XINERAMA */
 
@@ -1579,91 +1595,111 @@ unmapnotify(XEvent *e) {
 }
 
 void
+updatebars(void) {
+    Monitor *m;
+    XSetWindowAttributes wa;
+
+    wa.cursor = cursor[CurNormal];
+    wa.override_redirect = True;
+    wa.background_pixmap = ParentRelative;
+    wa.event_mask = ButtonPressMask|ExposureMask;
+
+    for(m = mons; m; m = m->next) {
+        m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
+
+                                  CopyFromParent, DefaultVisual(dpy, screen),
+                                  CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+        XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
+        XMapRaised(dpy, m->barwin);
+    }
+}
+
+void
 updategeom(void) {
-#ifdef XINERAMA
-    int n;
-    unsigned int i = 0;
+    int i, n;
     Client *c;
+    Monitor *newmons = NULL, *m;
+
+#ifdef XINERAMA
     XineramaScreenInfo *info = NULL;
 
-    /* window area geometry */
-    if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
-        if(n != nmons) {
-            for(c = clients; c; c = c->next)
-                if(c->mon >= n)
-                    c->mon = n - 1;
-            if(!(mon = (Monitor *)realloc(mon, sizeof(Monitor) * n)))
-                die("fatal: could not realloc() %u bytes\n", sizeof(Monitor) * nmons);
-            selmon = NULL;
-        }
-        for(i = 0; i < n ; i++) {
-            /* TODO: consider re-using XineramaScreenInfo */
-            mon[i].symbol[0] = '[';
-            mon[i].symbol[1] = '0' + info[i].screen_number;
-            mon[i].symbol[2] = ']';
-            mon[i].symbol[3] = 0;
-            if(!selmon) { /* not initialised yet */
-                mon[i].mfact = mfact;
-                mon[i].showbar = showbar;
-                mon[i].topbar = topbar;
-                mon[i].tagset[0] = mon[i].tagset[1] = 1;
-            }
-            mon[i].wx = info[i].x_org;
-            mon[i].wy = mon[i].showbar && mon[i].topbar ? info[i].y_org + bh : info[i].y_org;
-            mon[i].ww = info[i].width;
-            mon[i].wh = mon[i].showbar ? info[i].height - bh : info[i].height;
-            mon[i].seltags = 0;
-            mon[i].sellt = 0;
-            if(mon[i].showbar)
-                mon[i].by = mon[i].topbar ? info[i].y_org : mon[i].wy + mon[i].wh;
-            else
-                mon[i].by = -bh;
-        }
-        nmons = (unsigned int)n;
-        if(!selmon) {
-            selmon = &mon[0];
-            int di, x, y;
-            unsigned int dui;
-            Window dummy;
-            if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui)) 
-                for(i = 0; i < nmons; i++)
-                    if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height)) {
-                        selmon = &mon[i];
-                        break;
-                    }
+    if(XineramaIsActive(dpy))
+        info = XineramaQueryScreens(dpy, &n);
+#endif
+    /* allocate monitor(s) for the new geometry setup */
+    for(i = 0; i < n; i++) {
+        m = (Monitor *)malloc(sizeof(Monitor));
+        m->next = newmons;
+        newmons = m;
+    }
+
+    /* initialise monitor(s) */
+#ifdef XINERAMA
+    if(XineramaIsActive(dpy)) {
+        for(i = 0, m = newmons; m; m = m->next, i++) {
+            m->screen_number = info[i].screen_number;
+            m->wx = info[i].x_org;
+            m->wy = info[i].y_org;
+            m->ww = info[i].width;
+            m->wh = info[i].height;
         }
         XFree(info);
     }
     else
-#endif /* XINERAMA */
+#endif
+    /* default monitor setup */
     {
-        if(!mon) {
-            nmons = 1;
-            if(!(mon = (Monitor *)malloc(sizeof(Monitor))))
-                die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
-        }
-        if(!selmon) {
-            mon[0].symbol[0] = '[';
-            mon[0].symbol[1] = '0';
-            mon[0].symbol[2] = ']';
-            mon[0].symbol[3] = 0;
-            mon[0].mfact = mfact;
-            mon[0].showbar = showbar;
-            mon[0].topbar = topbar;
-            mon[0].tagset[0] = mon[0].tagset[1] = 1;
+        m->screen_number = 0;
+        m->wx = sx;
+        m->wy = sy;
+        m->ww = sw;
+        m->wh = sh;
+    }
+
+    /* bar geometry setup */
+    for(m = newmons; m; m = m->next) {
+        /* TODO: consider removing the following values from config.h */
+        m->seltags = 0;
+        m->sellt = 0;
+        m->tagset[0] = m->tagset[1] = 1;
+        m->mfact = mfact;
+        m->showbar = showbar;
+        m->topbar = topbar;
+        if(m->showbar) {
+            m->wh -= bh;
+            m->by = m->topbar ? m->wy : m->wy + m->wh;
+            m->wy = m->topbar ? m->wy + bh : m->wy;
         }
-        mon[0].wx = sx;
-        mon[0].wy = mon[0].showbar && mon[0].topbar ? sy + bh : sy;
-        mon[0].ww = sw;
-        mon[0].wh = mon[0].showbar ? sh - bh : sh;
-        mon[0].seltags = 0;
-        mon[0].sellt = 0;
-        if(mon[0].showbar)
-            mon[0].by = mon[0].topbar ? sy : mon[0].wy + mon[0].wh;
         else
-            mon[0].by = -bh;
-        selmon = &mon[0];
+            m->by = -bh;
+        /* reassign all clients with same screen number */
+        for(c = clients; c; c = c->next)
+            if(c->m->screen_number == m->screen_number)
+                c->m = m;
+    }
+
+    /* reassign left over clients with disappeared screen number */
+    for(c = clients; c; c = c->next)
+        if(c->m->screen_number >= n)
+            c->m = newmons;
+
+    /* select focused monitor */
+    if(!selmon) {
+        selmon = newmons;
+        int di, x, y;
+        unsigned int dui;
+        Window dummy;
+        if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui)) 
+            for(m = newmons; m; m = m->next)
+                if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh)) {
+                    selmon = m;
+                    break;
+                }
     }
+
+    /* final assignment of new monitors */
+    cleanupmons();
+    mons = newmons;
 }
 
 void