expandible scratchpad patch

super+shift+return for dropdown terminal

super+' for dropdown calculator

config.h

@@ -24,6 +24,18 @@ static char *colors[][3] = {
        [SchemeSel]  = { selfgcolor,  selbgcolor,  selbordercolor  },
 };
 
+typedef struct {
+	const char *name;
+	const void *cmd;
+} Sp;
+const char *spcmd1[] = {"st", "-n", "spterm", "-g", "120x34", NULL };
+const char *spcmd2[] = {"st", "-n", "spcalc", "-f", "monospace:size=16", "-g", "50x20", "-e", "bc", "-lq", NULL };
+static Sp scratchpads[] = {
+	/* name          cmd  */
+	{"spterm",      spcmd1},
+	{"spranger",    spcmd2},
+};
+
 /* tagging */
 static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
 
@@ -35,6 +47,8 @@ static const Rule rules[] = {
 	/* class      instance    title       tags mask     isfloating   isterminal noswallow monitor */
 	{ "Gimp",     NULL,       NULL,       1 << 8,       0,           0,         0,        -1 },
 	{ "St",       NULL,       NULL,       0,            0,           1,         0,        -1 },
+	{ NULL,      "spterm",    NULL,       SPTAG(0),     1,           1,         0,        -1 },
+	{ NULL,      "spcalc",      NULL,       SPTAG(1),     1,           1,         0,        -1 },
 };
 
 /* layout(s) */
@@ -156,10 +170,10 @@ static Key keys[] = {
 	{ MODKEY,			XK_l,		setmfact,      	{.f = +0.05} },
 	{ MODKEY,			XK_semicolon,	shiftview,	{ .i = 1 } },
 	/* { MODKEY|ShiftMask,		XK_semicolon,	shiftview,	SHCMD("") }, */
-	/* { MODKEY,			XK_apostrophe,	spawn,		SHCMD("") }, */
+	{ MODKEY,			XK_apostrophe,	togglescratch,	{.ui = 1} },
 	/* { MODKEY|ShiftMask,		XK_apostrophe,	spawn,		SHCMD("") }, */
 	{ MODKEY,			XK_Return,	spawn,		{.v = termcmd } },
-	/* { MODKEY|ShiftMask,		XK_Return,	togglescratch,	{.v = scratchpadcmd } }, */
+	{ MODKEY|ShiftMask,		XK_Return,	togglescratch,	{.ui = 0} },
 
 	{ MODKEY,			XK_z,		incrgaps,	{.i = +1 } },
 	{ MODKEY|ShiftMask,		XK_z,		incrgaps,	{.i = -1 } },
@@ -255,7 +269,6 @@ static Key keys[] = {
 	/* { MODKEY|ShiftMask,             XK_y,      incrovgaps,     {.i = +1 } }, */
 	/* { MODKEY|ShiftMask,             XK_o,      incrovgaps,     {.i = -1 } }, */
 
-
 };
 
 /* button definitions */

dwm.c

@@ -62,7 +62,10 @@
 #define MOD(N,M)                ((N)%(M) < 0 ? (N)%(M) + (M) : (N)%(M))
 #define WIDTH(X)                ((X)->w + 2 * (X)->bw)
 #define HEIGHT(X)               ((X)->h + 2 * (X)->bw)
-#define TAGMASK                 ((1 << LENGTH(tags)) - 1)
+#define NUMTAGS			(LENGTH(tags) + LENGTH(scratchpads))
+#define TAGMASK			((1 << NUMTAGS) - 1)
+#define SPTAG(i)		((1 << LENGTH(tags)) << (i))
+#define SPTAGMASK		(((1 << LENGTH(scratchpads))-1) << LENGTH(tags))
 #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
 #define TRUNC(X,A,B)            (MAX((A), MIN((X), (B))))
 #define XRDB_LOAD_COLOR(R,V)    if (XrmGetResource(xrdb, R, NULL, &type, &value) == True) { \
@@ -251,6 +254,7 @@ static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
+static void togglescratch(const Arg *arg);
 static void togglesticky(const Arg *arg);
 static void togglefullscr(const Arg *arg);
 static void toggletag(const Arg *arg);
@@ -356,6 +360,11 @@ applyrules(Client *c)
 			c->isterminal = r->isterminal;
 			c->isfloating = r->isfloating;
 			c->tags |= r->tags;
+			if ((r->tags & SPTAGMASK) && r->isfloating) {
+				c->x = c->mon->wx + (c->mon->ww / 2 - WIDTH(c) / 2);
+				c->y = c->mon->wy + (c->mon->wh / 2 - HEIGHT(c) / 2);
+			}
+
 			for (m = mons; m && m->num != r->monitor; m = m->next);
 			if (m)
 				c->mon = m;
@@ -365,7 +374,7 @@ applyrules(Client *c)
 		XFree(ch.res_class);
 	if (ch.res_name)
 		XFree(ch.res_name);
-	c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
+	c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : (c->mon->tagset[c->mon->seltags] & ~SPTAGMASK);
 }
 
 int
@@ -1854,6 +1863,10 @@ showhide(Client *c)
 	if (!c)
 		return;
 	if (ISVISIBLE(c)) {
+		if ((c->tags & SPTAGMASK) && c->isfloating) {
+			c->x = c->mon->wx + (c->mon->ww / 2 - WIDTH(c) / 2);
+			c->y = c->mon->wy + (c->mon->wh / 2 - HEIGHT(c) / 2);
+		}
 		/* show clients top down */
 		XMoveWindow(dpy, c->win, c->x, c->y);
 		if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
@@ -1978,6 +1991,32 @@ togglesticky(const Arg *arg)
 	arrange(selmon);
 }
 
+void
+togglescratch(const Arg *arg)
+{
+	Client *c;
+	unsigned int found = 0;
+	unsigned int scratchtag = SPTAG(arg->ui);
+	Arg sparg = {.v = scratchpads[arg->ui].cmd};
+
+	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 {
+		selmon->tagset[selmon->seltags] |= scratchtag;
+		spawn(&sparg);
+	}
+}
+
 void
 toggletag(const Arg *arg)
 {

larbs.mom

@@ -166,6 +166,8 @@ To type capital letters, hold down the \f(CWShift\fP key\(emthat might sound lik
 \f(CWMod+F4\fP \(en pulsemixer (audio system control)
 .ITEM
 \f(CWMod+Shift+Enter\fP \(en Show/hide dropdown terminal
+.ITEM
+\f(CWMod+'\fP \(en Show/hide dropdown calculator
 .LIST OFF
 .HEADING 2 "System"
 .LI