anybar

config.def.h

@@ -19,6 +19,11 @@ static const char *colors[][3]      = {
 	[SchemeSel]  = { col_text,  col_base,  col_iris  },
 };
 
+// anybar config
+static const int usealtbar          = 1;              /* 1 means use non-dwm status bar */
+static const char *altbarclass      = "Polybar";      /* Alternate bar class name */
+static const char *altbarcmd        = "$HOME/bar.sh"; /* Alternate bar launch command */
+
 /* tagging */
 static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
 

dwm.c

@@ -47,8 +47,8 @@
 /* macros */
 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
 #define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
-#define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
+#define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->mx+(m)->mw) - MAX((x),(m)->mx)) \
-                               * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
+                               * MAX(0, MIN((y)+(h),(m)->my+(m)->mh) - MAX((y),(m)->my)))
 #define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
 #define WIDTH(X)                ((X)->w + 2 * (X)->bw)
@@ -117,7 +117,7 @@ struct Monitor {
 	float mfact;
 	int nmaster;
 	int num;
-	int by;               /* bar geometry */
+	int by, bh;           /* bar geometry */
 	int mx, my, mw, mh;   /* screen size */
 	int wx, wy, ww, wh;   /* window area  */
 	unsigned int seltags;
@@ -181,6 +181,7 @@ static void incnmaster(const Arg *arg);
 static void keypress(XEvent *e);
 static void killclient(const Arg *arg);
 static void manage(Window w, XWindowAttributes *wa);
+static void managealtbar(Window win, XWindowAttributes *wa);
 static void mappingnotify(XEvent *e);
 static void maprequest(XEvent *e);
 static void monocle(Monitor *m);
@@ -209,6 +210,7 @@ static void setup(void);
 static void seturgent(Client *c, int urg);
 static void showhide(Client *c);
 static void spawn(const Arg *arg);
+static void spawnbar(void);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
 static void tile(Monitor *m);
@@ -218,6 +220,7 @@ static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
 static void unfocus(Client *c, int setfocus);
 static void unmanage(Client *c, int destroyed);
+static void unmanagealtbar(Window w);
 static void unmapnotify(XEvent *e);
 static void updatebarpos(Monitor *m);
 static void updatebars(void);
@@ -232,6 +235,7 @@ static void updatewmhints(Client *c);
 static void view(const Arg *arg);
 static Client *wintoclient(Window w);
 static Monitor *wintomon(Window w);
+static int wmclasscontains(Window win, const char *class, const char *name);
 static int xerror(Display *dpy, XErrorEvent *ee);
 static int xerrordummy(Display *dpy, XErrorEvent *ee);
 static int xerrorstart(Display *dpy, XErrorEvent *ee);
@@ -519,8 +523,10 @@ cleanupmon(Monitor *mon)
 		for (m = mons; m && m->next != mon; m = m->next);
 		m->next = mon->next;
 	}
+	if (!usealtbar) {
 		XUnmapWindow(dpy, mon->barwin);
 		XDestroyWindow(dpy, mon->barwin);
+	}
 	free(mon);
 }
 
@@ -582,7 +588,7 @@ configurenotify(XEvent *e)
 				for (c = m->clients; c; c = c->next)
 					if (c->isfullscreen)
 						resizeclient(c, m->mx, m->my, m->mw, m->mh);
-				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
+				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, m->bh);
 			}
 			focus(NULL);
 			arrange(NULL);
@@ -654,6 +660,7 @@ createmon(void)
 	m->nmaster = nmaster;
 	m->showbar = showbar;
 	m->topbar = topbar;
+	m->bh = bh;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
@@ -678,10 +685,13 @@ void
 destroynotify(XEvent *e)
 {
 	Client *c;
+	Monitor *m;
 	XDestroyWindowEvent *ev = &e->xdestroywindow;
 
 	if ((c = wintoclient(ev->window)))
 		unmanage(c, 1);
+	else if ((m = wintomon(ev->window)) && m->barwin == ev->window)
+		unmanagealtbar(ev->window);
 }
 
 void
@@ -725,6 +735,9 @@ dirtomon(int dir)
 void
 drawbar(Monitor *m)
 {
+	if (usealtbar)
+		return;
+
 	int x, w, tw = 0;
 	int boxs = drw->fonts->h / 9;
 	int boxw = drw->fonts->h / 6 + 2;
@@ -1135,6 +1148,25 @@ manage(Window w, XWindowAttributes *wa)
 	focus(NULL);
 }
 
+void
+managealtbar(Window win, XWindowAttributes *wa)
+{
+	Monitor *m;
+	if (!(m = recttomon(wa->x, wa->y, wa->width, wa->height)))
+		return;
+
+	m->barwin = win;
+	m->by = wa->y;
+	bh = m->bh = wa->height;
+	updatebarpos(m);
+	arrange(m);
+	XSelectInput(dpy, win, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
+	XMoveResizeWindow(dpy, win, wa->x, wa->y, wa->width, wa->height);
+	XMapWindow(dpy, win);
+	XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
+		(unsigned char *) &win, 1);
+}
+
 void
 mappingnotify(XEvent *e)
 {
@@ -1149,11 +1181,13 @@ void
 maprequest(XEvent *e)
 {
 	static XWindowAttributes wa;
-	XMapRequestEvent *ev = &e->xmaprequest;
+	XMapRequestEvent *ev = &e->xaprequest;
 
 	if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
 		return;
-	if (!wintoclient(ev->window))
+	if (wmclasscontains(ev->window, altbarclass, ""))
+		managealtbar(ev->window, &wa);
+	else if (!wintoclient(ev->window))
 		manage(ev->window, &wa);
 }
 
@@ -1449,7 +1483,9 @@ scan(void)
 			if (!XGetWindowAttributes(dpy, wins[i], &wa)
 			|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
 				continue;
-			if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
+			if (wmclasscontains(wins[i], altbarclass, ""))
+				managealtbar(wins[i], &wa);
+			else if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
 				manage(wins[i], &wa);
 		}
 		for (i = 0; i < num; i++) { /* now the transients */
@@ -1610,7 +1646,7 @@ setup(void)
 	if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 		die("no fonts could be loaded.");
 	lrpad = drw->fonts->h;
-	bh = drw->fonts->h + 2;
+	bh = usealtbar ? 0 : drw->fonts->h + 2;
 	updategeom();
 	/* init atoms */
 	utf8string = XInternAtom(dpy, "UTF8_STRING", False);
@@ -1664,6 +1700,7 @@ setup(void)
 	XSelectInput(dpy, root, wa.event_mask);
 	grabkeys();
 	focus(NULL);
+	spawnbar();
 }
 
 void
@@ -1719,6 +1756,13 @@ spawn(const Arg *arg)
 	}
 }
 
+void
+spawnbar()
+{
+	if (*altbarcmd)
+		system(altbarcmd);
+}
+
 void
 setclienttagprop(Client *c)
 {
@@ -1781,7 +1825,7 @@ togglebar(const Arg *arg)
 {
 	selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
 	updatebarpos(selmon);
-	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, selmon->bh);
 	arrange(selmon);
 }
 
@@ -1890,10 +1934,26 @@ unmanage(Client *c, int destroyed)
 	arrange(m);
 }
 
+void
+unmanagealtbar(Window w)
+{
+    Monitor *m = wintomon(w);
+
+    if (!m)
+        return;
+
+    m->barwin = 0;
+    m->by = 0;
+    m->bh = 0;
+    updatebarpos(m);
+    arrange(m);
+}
+
 void
 unmapnotify(XEvent *e)
 {
 	Client *c;
+	Monitor *m;
 	XUnmapEvent *ev = &e->xunmap;
 
 	if ((c = wintoclient(ev->window))) {
@@ -1901,12 +1961,16 @@ unmapnotify(XEvent *e)
 			setclientstate(c, WithdrawnState);
 		else
 			unmanage(c, 0);
-	}
+	} else if ((m = wintomon(ev->window)) && m->barwin == ev->window)
+		unmanagealtbar(ev->window);
 }
 
 void
 updatebars(void)
 {
+	if (usealtbar)
+		return;
+
 	Monitor *m;
 	XSetWindowAttributes wa = {
 		.override_redirect = True,
@@ -1932,11 +1996,11 @@ updatebarpos(Monitor *m)
 	m->wy = m->my;
 	m->wh = m->mh;
 	if (m->showbar) {
-		m->wh -= bh;
+		m->wh -= m->bh;
 		m->by = m->topbar ? m->wy : m->wy + m->wh;
-		m->wy = m->topbar ? m->wy + bh : m->wy;
+		m->wy = m->topbar ? m->wy + m->bh : m->wy;
 	} else
-		m->by = -bh;
+		m->by = -m->bh;
 }
 
 void
@@ -2207,6 +2271,28 @@ wintomon(Window w)
 	return selmon;
 }
 
+int
+wmclasscontains(Window win, const char *class, const char *name)
+{
+	XClassHint ch = { NULL, NULL };
+	int res = 1;
+
+	if (XGetClassHint(dpy, win, &ch)) {
+		if (ch.res_name && strstr(ch.res_name, name) == NULL)
+			res = 0;
+		if (ch.res_class && strstr(ch.res_class, class) == NULL)
+			res = 0;
+	} else
+		res = 0;
+
+	if (ch.res_class)
+		XFree(ch.res_class);
+	if (ch.res_name)
+		XFree(ch.res_name);
+
+	return res;
+}
+
 /* There's no way to check accesses to destroyed windows, thus those cases are
  * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  * default error handler, which may call exit. */

patches/anybar.diff

@@ -0,0 +1,335 @@
+From 782f63d8f858b1c14df38aaf623438d7ea2f75e1 Mon Sep 17 00:00:00 2001
+From: mihirlad55 <mihirlad55@gmail.com>
+Date: Mon, 10 Aug 2020 01:39:35 +0000
+Subject: [PATCH] Add support for managing external status bars
+
+This patch allows dwm to manage other status bars such as
+polybar/lemonbar without them needing to set override-redirect. For
+all intents and purposes, DWM treats this bar as if it were its own
+and as a result helps the status bar and DWM live in harmony.
+
+This has a few advantages
+* The bar does not block fullscreen windows
+* DWM makes room for the status bar, so windows do not overlap the bar
+* The bar can be hidden/killed and DWM will not keep an unsightly gap
+  where the bar was
+* DWM receives EnterNotify events when your cursor enters the bar
+
+To use another status bar, set usealtbar to 1 in your config.h and set
+altbarclass to the class name (can be found using xprop) to the class
+name of your status bar. Also make sure that if your status bar will
+be displayed on top, topbar is set to 1 in your config, and if it will
+be displayed on bottom, topbar is set to 0. This patch does not
+support bars that are not docked at the top or at the bottom of your
+monitor.
+
+The patch is developed at https://github.com/mihirlad55/dwm-anybar
+---
+ config.def.h |   3 ++
+ dwm.c        | 114 ++++++++++++++++++++++++++++++++++++++++++++-------
+ 2 files changed, 103 insertions(+), 14 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 1c0b587..d0d60aa 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -5,6 +5,9 @@ static const unsigned int borderpx  = 1;        /* border pixel of windows */
+ static const unsigned int snap      = 32;       /* snap pixel */
+ static const int showbar            = 1;        /* 0 means no bar */
+ static const int topbar             = 1;        /* 0 means bottom bar */
++static const int usealtbar          = 1;        /* 1 means use non-dwm status bar */
++static const char *altbarclass      = "Polybar"; /* Alternate bar class name */
++static const char *altbarcmd        = "$HOME/bar.sh"; /* Alternate bar launch command */
+ static const char *fonts[]          = { "monospace:size=10" };
+ static const char dmenufont[]       = "monospace:size=10";
+ static const char col_gray1[]       = "#222222";
+diff --git a/dwm.c b/dwm.c
+index 9fd0286..f149ab4 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -47,8 +47,8 @@
+ /* macros */
+ #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
+ #define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
+-#define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
+-                               * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
++#define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->mx+(m)->mw) - MAX((x),(m)->mx)) \
++                               * MAX(0, MIN((y)+(h),(m)->my+(m)->mh) - MAX((y),(m)->my)))
+ #define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
+ #define LENGTH(X)               (sizeof X / sizeof X[0])
+ #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
+@@ -116,7 +116,7 @@ struct Monitor {
+ 	float mfact;
+ 	int nmaster;
+ 	int num;
+-	int by;               /* bar geometry */
++	int by, bh;           /* bar geometry */
+ 	int mx, my, mw, mh;   /* screen size */
+ 	int wx, wy, ww, wh;   /* window area  */
+ 	unsigned int seltags;
+@@ -179,6 +179,7 @@ static void incnmaster(const Arg *arg);
+ static void keypress(XEvent *e);
+ static void killclient(const Arg *arg);
+ static void manage(Window w, XWindowAttributes *wa);
++static void managealtbar(Window win, XWindowAttributes *wa);
+ static void mappingnotify(XEvent *e);
+ static void maprequest(XEvent *e);
+ static void monocle(Monitor *m);
+@@ -207,6 +208,7 @@ static void seturgent(Client *c, int urg);
+ static void showhide(Client *c);
+ static void sigchld(int unused);
+ static void spawn(const Arg *arg);
++static void spawnbar();
+ static void tag(const Arg *arg);
+ static void tagmon(const Arg *arg);
+ static void tile(Monitor *);
+@@ -216,6 +218,7 @@ static void toggletag(const Arg *arg);
+ static void toggleview(const Arg *arg);
+ static void unfocus(Client *c, int setfocus);
+ static void unmanage(Client *c, int destroyed);
++static void unmanagealtbar(Window w);
+ static void unmapnotify(XEvent *e);
+ static void updatebarpos(Monitor *m);
+ static void updatebars(void);
+@@ -230,6 +233,7 @@ static void updatewmhints(Client *c);
+ static void view(const Arg *arg);
+ static Client *wintoclient(Window w);
+ static Monitor *wintomon(Window w);
++static int wmclasscontains(Window win, const char *class, const char *name);
+ static int xerror(Display *dpy, XErrorEvent *ee);
+ static int xerrordummy(Display *dpy, XErrorEvent *ee);
+ static int xerrorstart(Display *dpy, XErrorEvent *ee);
+@@ -505,8 +509,10 @@ cleanupmon(Monitor *mon)
+ 		for (m = mons; m && m->next != mon; m = m->next);
+ 		m->next = mon->next;
+ 	}
+-	XUnmapWindow(dpy, mon->barwin);
+-	XDestroyWindow(dpy, mon->barwin);
++	if (!usealtbar) {
++		XUnmapWindow(dpy, mon->barwin);
++		XDestroyWindow(dpy, mon->barwin);
++	}
+ 	free(mon);
+ }
+ 
+@@ -568,7 +574,7 @@ configurenotify(XEvent *e)
+ 				for (c = m->clients; c; c = c->next)
+ 					if (c->isfullscreen)
+ 						resizeclient(c, m->mx, m->my, m->mw, m->mh);
+-				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
++				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, m->bh);
+ 			}
+ 			focus(NULL);
+ 			arrange(NULL);
+@@ -639,6 +645,7 @@ createmon(void)
+ 	m->nmaster = nmaster;
+ 	m->showbar = showbar;
+ 	m->topbar = topbar;
++	m->bh = bh;
+ 	m->lt[0] = &layouts[0];
+ 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
+ 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+@@ -649,10 +656,13 @@ void
+ destroynotify(XEvent *e)
+ {
+ 	Client *c;
++	Monitor *m;
+ 	XDestroyWindowEvent *ev = &e->xdestroywindow;
+ 
+ 	if ((c = wintoclient(ev->window)))
+ 		unmanage(c, 1);
++	else if ((m = wintomon(ev->window)) && m->barwin == ev->window)
++		unmanagealtbar(ev->window);
+ }
+ 
+ void
+@@ -696,6 +706,9 @@ dirtomon(int dir)
+ void
+ drawbar(Monitor *m)
+ {
++	if (usealtbar)
++		return;
++
+ 	int x, w, tw = 0;
+ 	int boxs = drw->fonts->h / 9;
+ 	int boxw = drw->fonts->h / 6 + 2;
+@@ -1077,6 +1090,25 @@ manage(Window w, XWindowAttributes *wa)
+ 	focus(NULL);
+ }
+ 
++void
++managealtbar(Window win, XWindowAttributes *wa)
++{
++	Monitor *m;
++	if (!(m = recttomon(wa->x, wa->y, wa->width, wa->height)))
++		return;
++
++	m->barwin = win;
++	m->by = wa->y;
++	bh = m->bh = wa->height;
++	updatebarpos(m);
++	arrange(m);
++	XSelectInput(dpy, win, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
++	XMoveResizeWindow(dpy, win, wa->x, wa->y, wa->width, wa->height);
++	XMapWindow(dpy, win);
++	XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
++		(unsigned char *) &win, 1);
++}
++
+ void
+ mappingnotify(XEvent *e)
+ {
+@@ -1097,7 +1129,9 @@ maprequest(XEvent *e)
+ 		return;
+ 	if (wa.override_redirect)
+ 		return;
+-	if (!wintoclient(ev->window))
++	if (wmclasscontains(ev->window, altbarclass, ""))
++		managealtbar(ev->window, &wa);
++	else if (!wintoclient(ev->window))
+ 		manage(ev->window, &wa);
+ }
+ 
+@@ -1393,7 +1427,9 @@ scan(void)
+ 			if (!XGetWindowAttributes(dpy, wins[i], &wa)
+ 			|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
+ 				continue;
+-			if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
++			if (wmclasscontains(wins[i], altbarclass, ""))
++				managealtbar(wins[i], &wa);
++			else if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
+ 				manage(wins[i], &wa);
+ 		}
+ 		for (i = 0; i < num; i++) { /* now the transients */
+@@ -1546,7 +1582,7 @@ setup(void)
+ 	if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
+ 		die("no fonts could be loaded.");
+ 	lrpad = drw->fonts->h;
+-	bh = drw->fonts->h + 2;
++	bh = usealtbar ? 0 : drw->fonts->h + 2;
+ 	updategeom();
+ 	/* init atoms */
+ 	utf8string = XInternAtom(dpy, "UTF8_STRING", False);
+@@ -1595,6 +1631,7 @@ setup(void)
+ 	XSelectInput(dpy, root, wa.event_mask);
+ 	grabkeys();
+ 	focus(NULL);
++	spawnbar();
+ }
+ 
+ 
+@@ -1653,6 +1690,13 @@ spawn(const Arg *arg)
+ 	}
+ }
+ 
++void
++spawnbar()
++{
++	if (*altbarcmd)
++		system(altbarcmd);
++}
++
+ void
+ tag(const Arg *arg)
+ {
+@@ -1704,7 +1748,7 @@ togglebar(const Arg *arg)
+ {
+ 	selmon->showbar = !selmon->showbar;
+ 	updatebarpos(selmon);
+-	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
++	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, selmon->bh);
+ 	arrange(selmon);
+ }
+ 
+@@ -1787,10 +1831,26 @@ unmanage(Client *c, int destroyed)
+ 	arrange(m);
+ }
+ 
++void
++unmanagealtbar(Window w)
++{
++    Monitor *m = wintomon(w);
++
++    if (!m)
++        return;
++
++    m->barwin = 0;
++    m->by = 0;
++    m->bh = 0;
++    updatebarpos(m);
++    arrange(m);
++}
++
+ void
+ unmapnotify(XEvent *e)
+ {
+ 	Client *c;
++	Monitor *m;
+ 	XUnmapEvent *ev = &e->xunmap;
+ 
+ 	if ((c = wintoclient(ev->window))) {
+@@ -1798,12 +1858,16 @@ unmapnotify(XEvent *e)
+ 			setclientstate(c, WithdrawnState);
+ 		else
+ 			unmanage(c, 0);
+-	}
++	} else if ((m = wintomon(ev->window)) && m->barwin == ev->window)
++		unmanagealtbar(ev->window);
+ }
+ 
+ void
+ updatebars(void)
+ {
++	if (usealtbar)
++		return;
++
+ 	Monitor *m;
+ 	XSetWindowAttributes wa = {
+ 		.override_redirect = True,
+@@ -1829,11 +1893,11 @@ updatebarpos(Monitor *m)
+ 	m->wy = m->my;
+ 	m->wh = m->mh;
+ 	if (m->showbar) {
+-		m->wh -= bh;
++		m->wh -= m->bh;
+ 		m->by = m->topbar ? m->wy : m->wy + m->wh;
+-		m->wy = m->topbar ? m->wy + bh : m->wy;
++		m->wy = m->topbar ? m->wy + m->bh : m->wy;
+ 	} else
+-		m->by = -bh;
++		m->by = -m->bh;
+ }
+ 
+ void
+@@ -2077,6 +2141,28 @@ wintomon(Window w)
+ 	return selmon;
+ }
+ 
++int
++wmclasscontains(Window win, const char *class, const char *name)
++{
++	XClassHint ch = { NULL, NULL };
++	int res = 1;
++
++	if (XGetClassHint(dpy, win, &ch)) {
++		if (ch.res_name && strstr(ch.res_name, name) == NULL)
++			res = 0;
++		if (ch.res_class && strstr(ch.res_class, class) == NULL)
++			res = 0;
++	} else
++		res = 0;
++
++	if (ch.res_class)
++		XFree(ch.res_class);
++	if (ch.res_name)
++		XFree(ch.res_name);
++
++	return res;
++}
++
+ /* There's no way to check accesses to destroyed windows, thus those cases are
+  * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
+  * default error handler, which may call exit. */
+-- 
+2.28.0
+