+patches for scratchpad, color specification and gaps

config.def.h

@@ -16,6 +16,11 @@ static const char *colors[][3]      = {
 	/*               fg         bg         border   */
 	[SchemeNorm] = { col_gray3, col_gray1, col_gray2 },
 	[SchemeSel]  = { col_gray4, col_cyan,  col_cyan  },
+	[SchemeStatus]  = { col_gray3, col_gray1,  "#000000"  }, // Statusbar right {text,background,not used but cannot be empty}
+	[SchemeTagsSel]  = { col_gray4, col_cyan,  "#000000"  }, // Tagbar left selected {text,background,not used but cannot be empty}
+    [SchemeTagsNorm]  = { col_gray3, col_gray1,  "#000000"  }, // Tagbar left unselected {text,background,not used but cannot be empty}
+    [SchemeInfoSel]  = { col_gray4, col_cyan,  "#000000"  }, // infobar middle  selected {text,background,not used but cannot be empty}
+    [SchemeInfoNorm]  = { col_gray3, col_gray1,  "#000000"  }, // infobar middle  unselected {text,background,not used but cannot be empty}
 };
 
 /* tagging */
@@ -58,11 +63,14 @@ static const Layout layouts[] = {
 static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
 static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
 static const char *termcmd[]  = { "st", NULL };
+static const char scratchpadname[] = "scratchpad";
+static const char *scratchpadcmd[] = { "st", "-t", scratchpadname, "-g", "120x34", NULL };
 
 static Key keys[] = {
 	/* modifier                     key        function        argument */
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
 	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
+	{ MODKEY,                       XK_grave,  togglescratch,  {.v = scratchpadcmd } },
 	{ MODKEY,                       XK_b,      togglebar,      {0} },
 	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },
 	{ MODKEY,                       XK_k,      focusstack,     {.i = -1 } },

dwm.c

@@ -59,7 +59,7 @@
 
 /* enums */
 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
-enum { SchemeNorm, SchemeSel }; /* color schemes */
+enum { SchemeNorm, SchemeSel, SchemeStatus, SchemeTagsSel, SchemeTagsNorm, SchemeInfoSel, SchemeInfoNorm }; /* color schemes */
 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
        NetWMFullscreen, NetActiveWindow, NetWMWindowType,
        NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
@@ -119,6 +119,7 @@ struct Monitor {
 	int by;               /* bar geometry */
 	int mx, my, mw, mh;   /* screen size */
 	int wx, wy, ww, wh;   /* window area  */
+	int gappx;            /* gaps between windows */
 	unsigned int seltags;
 	unsigned int sellt;
 	unsigned int tagset[2];
@@ -156,6 +157,7 @@ static void clientmessage(XEvent *e);
 static void configure(Client *c);
 static void configurenotify(XEvent *e);
 static void configurerequest(XEvent *e);
+static void copyvalidchars(char *text, char *rawtext);
 static Monitor *createmon(void);
 static void destroynotify(XEvent *e);
 static void detach(Client *c);
@@ -200,6 +202,7 @@ static void sendmon(Client *c, Monitor *m);
 static void setclientstate(Client *c, long state);
 static void setfocus(Client *c);
 static void setfullscreen(Client *c, int fullscreen);
+static void setgaps(const Arg *arg);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
 static void setup(void);
@@ -212,6 +215,7 @@ static void tagmon(const Arg *arg);
 static void tile(Monitor *);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
+static void togglescratch(const Arg *arg);
 static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
 static void unfocus(Client *c, int setfocus);
@@ -238,6 +242,9 @@ static void zoom(const Arg *arg);
 /* variables */
 static const char broken[] = "broken";
 static char stext[256];
+static char rawstext[256];
+static int statuscmdn;
+static char lastbutton[] = "-";
 static int screen;
 static int sw, sh;           /* X display screen geometry width, height */
 static int bh, blw = 0;      /* bar geometry */
@@ -250,7 +257,7 @@ static void (*handler[LASTEvent]) (XEvent *) = {
 	[ConfigureRequest] = configurerequest,
 	[ConfigureNotify] = configurenotify,
 	[DestroyNotify] = destroynotify,
-	[EnterNotify] = enternotify,
+	/* [EnterNotify] = enternotify, */
 	[Expose] = expose,
 	[FocusIn] = focusin,
 	[KeyPress] = keypress,
@@ -272,6 +279,8 @@ static Window root, wmcheckwin;
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
+static unsigned int scratchtag = 1 << LENGTH(tags);
+
 /* compile-time check if all tags fit into an unsigned int bit array. */
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
@@ -417,11 +426,12 @@ attachstack(Client *c)
 void
 buttonpress(XEvent *e)
 {
-	unsigned int i, x, click;
+	unsigned int i, x, click, occ = 0;
 	Arg arg = {0};
 	Client *c;
 	Monitor *m;
 	XButtonPressedEvent *ev = &e->xbutton;
+	*lastbutton = '0' + ev->button;
 
 	click = ClkRootWin;
 	/* focus monitor if necessary */
@@ -432,17 +442,39 @@ buttonpress(XEvent *e)
 	}
 	if (ev->window == selmon->barwin) {
 		i = x = 0;
-		do
+		for (c = m->clients; c; c = c->next)
+			occ |= c->tags == 255 ? 0 : c->tags;
+		do {
+			/* do not reserve space for vacant tags */
+			if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+				continue;
 			x += TEXTW(tags[i]);
-		while (ev->x >= x && ++i < LENGTH(tags));
+		} while (ev->x >= x && ++i < LENGTH(tags));
 		if (i < LENGTH(tags)) {
 			click = ClkTagBar;
 			arg.ui = 1 << i;
 		} else if (ev->x < x + blw)
 			click = ClkLtSymbol;
-		else if (ev->x > selmon->ww - TEXTW(stext))
+		else if (ev->x > (x = selmon->ww - TEXTW(stext) + lrpad)) {
 			click = ClkStatusText;
-		else
+
+			char *text = rawstext;
+			int i = -1;
+			char ch;
+			statuscmdn = 0;
+			while (text[++i]) {
+				if ((unsigned char)text[i] < ' ') {
+					ch = text[i];
+					text[i] = '\0';
+					x += TEXTW(text) - lrpad;
+					text[i] = ch;
+					text += i+1;
+					i = -1;
+					if (x >= ev->x) break;
+					if (ch <= LENGTH(statuscmds)) statuscmdn = ch - 1;
+				}
+			}
+		} else
 			click = ClkWinTitle;
 	} else if ((c = wintoclient(ev->window))) {
 		focus(c);
@@ -628,6 +660,19 @@ configurerequest(XEvent *e)
 	XSync(dpy, False);
 }
 
+void
+copyvalidchars(char *text, char *rawtext)
+{
+	int i = -1, j = 0;
+
+	while(rawtext[++i]) {
+		if ((unsigned char)rawtext[i] >= ' ') {
+			text[j++] = rawtext[i];
+		}
+	}
+	text[j] = '\0';
+}
+
 Monitor *
 createmon(void)
 {
@@ -639,6 +684,7 @@ createmon(void)
 	m->nmaster = nmaster;
 	m->showbar = showbar;
 	m->topbar = topbar;
+	m->gappx = gappx;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
@@ -704,39 +750,42 @@ drawbar(Monitor *m)
 
 	/* draw status first so it can be overdrawn by tags later */
 	if (m == selmon) { /* status is only drawn on selected monitor */
-		drw_setscheme(drw, scheme[SchemeNorm]);
+		drw_setscheme(drw, scheme[SchemeStatus]);
 		tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
 		drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
 	}
 
 	for (c = m->clients; c; c = c->next) {
-		occ |= c->tags;
+		occ |= c->tags == 255 ? 0 : c->tags;
 		if (c->isurgent)
 			urg |= c->tags;
 	}
 	x = 0;
 	for (i = 0; i < LENGTH(tags); i++) {
+		/* do not draw vacant tags */
+		if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+			continue;
 		w = TEXTW(tags[i]);
-		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
+		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeTagsSel : SchemeTagsNorm]);
 		drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
-		if (occ & 1 << i)
+		/* if (occ & 1 << i) */
-			drw_rect(drw, x + boxs, boxs, boxw, boxw,
+		/* 	drw_rect(drw, x + boxs, boxs, boxw, boxw, */
-				m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
+		/* 		m == selmon && selmon->sel && selmon->sel->tags & 1 << i, */
-				urg & 1 << i);
+		/* 		urg & 1 << i); */
 		x += w;
 	}
 	w = blw = TEXTW(m->ltsymbol);
-	drw_setscheme(drw, scheme[SchemeNorm]);
+	drw_setscheme(drw, scheme[SchemeTagsNorm]);
 	x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
 
 	if ((w = m->ww - tw - x) > bh) {
 		if (m->sel) {
-			drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
+			drw_setscheme(drw, scheme[m == selmon ? SchemeInfoSel : SchemeInfoNorm]);
 			drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
 			if (m->sel->isfloating)
 				drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
 		} else {
-			drw_setscheme(drw, scheme[SchemeNorm]);
+			drw_setscheme(drw, scheme[SchemeInfoNorm]);
 			drw_rect(drw, x, 0, w, bh, 1, 1);
 		}
 	}
@@ -1050,6 +1099,14 @@ manage(Window w, XWindowAttributes *wa)
 		&& (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
 	c->bw = borderpx;
 
+	selmon->tagset[selmon->seltags] &= ~scratchtag;
+	if (!strcmp(c->name, scratchpadname)) {
+		c->mon->tagset[c->mon->seltags] |= c->tags = scratchtag;
+		c->isfloating = True;
+		c->x = c->mon->wx + (c->mon->ww / 2 - WIDTH(c) / 2);
+		c->y = c->mon->wy + (c->mon->wh / 2 - HEIGHT(c) / 2);
+	}
+
 	wc.border_width = c->bw;
 	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
 	XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
@@ -1498,6 +1555,16 @@ setfullscreen(Client *c, int fullscreen)
 	}
 }
 
+void
+setgaps(const Arg *arg)
+{
+	if ((arg->i == 0) || (selmon->gappx + arg->i < 0))
+		selmon->gappx = 0;
+	else
+		selmon->gappx += arg->i;
+	arrange(selmon);
+}
+
 void
 setlayout(const Arg *arg)
 {
@@ -1642,6 +1709,11 @@ spawn(const Arg *arg)
 {
 	if (arg->v == dmenucmd)
 		dmenumon[0] = '0' + selmon->num;
+	else if (arg->v == statuscmd) {
+		statuscmd[2] = statuscmds[statuscmdn];
+		setenv("BUTTON", lastbutton, 1);
+	}
+	selmon->tagset[selmon->seltags] &= ~scratchtag;
 	if (fork() == 0) {
 		if (dpy)
 			close(ConnectionNumber(dpy));
@@ -1684,18 +1756,17 @@ tile(Monitor *m)
 	if (n > m->nmaster)
 		mw = m->nmaster ? m->ww * m->mfact : 0;
 	else
-		mw = m->ww;
+		mw = m->ww - m->gappx;
-	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+	for (i = 0, my = ty = m->gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)		if (i < m->nmaster) {
-		if (i < m->nmaster) {
+			h = (m->wh - my) / (MIN(n, m->nmaster) - i) - m->gappx;
-			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
+			resize(c, m->wx + m->gappx, m->wy + my, mw - (2*c->bw) - m->gappx, h - (2*c->bw), 0);
-			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
 			if (my + HEIGHT(c) < m->wh)
-				my += HEIGHT(c);
+			my += HEIGHT(c) + m->gappx;
 		} else {
-			h = (m->wh - ty) / (n - i);
+			h = (m->wh - ty) / (n - i) - m->gappx;
-			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
+			resize(c, m->wx + mw + m->gappx, m->wy + ty, m->ww - mw - (2*c->bw) - 2*m->gappx, h - (2*c->bw), 0);
 			if (ty + HEIGHT(c) < m->wh)
-				ty += HEIGHT(c);
+				ty += HEIGHT(c) + m->gappx;
 		}
 }
 
@@ -1722,6 +1793,28 @@ togglefloating(const Arg *arg)
 	arrange(selmon);
 }
 
+void
+togglescratch(const Arg *arg)
+{
+	Client *c;
+	unsigned int found = 0;
+
+	for (c = selmon->clients; c && !(found = c->tags & scratchtag); c = c->next);
+	if (found) {
+		unsigned int newtagset = selmon->tagset[selmon->seltags] ^ scratchtag;
+		if (newtagset) {
+			selmon->tagset[selmon->seltags] = newtagset;
+			focus(NULL);
+			arrange(selmon);
+		}
+		if (ISVISIBLE(c)) {
+			focus(c);
+			restack(selmon);
+		}
+	} else
+		spawn(arg);
+}
+
 void
 toggletag(const Arg *arg)
 {
@@ -1990,8 +2083,10 @@ updatesizehints(Client *c)
 void
 updatestatus(void)
 {
-	if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
+	if (!gettextprop(root, XA_WM_NAME, rawstext, sizeof(rawstext)))
 		strcpy(stext, "dwm-"VERSION);
+	else
+		copyvalidchars(stext, rawstext);
 	drawbar(selmon);
 }