add scratchpads patch

config.def.h

@@ -20,9 +20,22 @@ 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", "spfm", "-g", "144x41", "-e", "ranger", NULL };
+const char *spcmd3[] = {"keepassxc", NULL };
+static Sp scratchpads[] = {
+	/* name          cmd  */
+	{"spterm",      spcmd1},
+	{"spranger",    spcmd2},
+	{"keepassxc",   spcmd3},
+};
+
 /* tagging */
 static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
-
 static const Rule rules[] = {
 	/* xprop(1):
 	 *	WM_CLASS(STRING) = instance, class
@@ -31,6 +44,9 @@ static const Rule rules[] = {
 	/* class      instance    title       tags mask     isfloating   monitor */
 	{ "Gimp",	  NULL,			NULL,		0,				1,			 -1 },
 	{ "Firefox",  NULL,			NULL,		1 << 8,			0,			 -1 },
+	{ NULL,		  "spterm",		NULL,		SPTAG(0),		1,			 -1 },
+	{ NULL,		  "spfm",		NULL,		SPTAG(1),		1,			 -1 },
+	{ NULL,		  "keepassxc",	NULL,		SPTAG(2),		0,			 -1 },
 };
 
 /* layout(s) */
@@ -111,6 +127,9 @@ static const Key keys[] = {
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
+	{ MODKEY,            			XK_y,  	   togglescratch,  {.ui = 0 } },
+	{ MODKEY,            			XK_u,	   togglescratch,  {.ui = 1 } },
+	{ MODKEY,            			XK_x,	   togglescratch,  {.ui = 2 } },
 	TAGKEYS(                        XK_1,                      0)
 	TAGKEYS(                        XK_2,                      1)
 	TAGKEYS(                        XK_3,                      2)
@@ -133,7 +152,7 @@ static const Button buttons[] = {
 	{ ClkStatusText,        0,              Button2,        spawn,          {.v = termcmd } },
 	{ ClkClientWin,         MODKEY,         Button1,        movemouse,      {0} },
 	{ ClkClientWin,         MODKEY,         Button2,        togglefloating, {0} },
-	{ ClkClientWin,         MODKEY,         Button3,        resizemouse,    {0} },
+	{ ClkClientWin,         MODKEY,         Button1,        resizemouse,    {0} },
 	{ ClkTagBar,            0,              Button1,        view,           {0} },
 	{ ClkTagBar,            0,              Button3,        toggleview,     {0} },
 	{ ClkTagBar,            MODKEY,         Button1,        tag,            {0} },

dwm.c

@@ -55,7 +55,10 @@
 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
 #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)
 
 /* enums */
@@ -224,6 +227,7 @@ static void tagmon(const Arg *arg);
 static void tile(Monitor *m);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
+static void togglescratch(const Arg *arg);
 static void togglefullscr(const Arg *arg);
 static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
@@ -316,6 +320,11 @@ applyrules(Client *c)
 		{
 			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;
@@ -325,7 +334,7 @@ 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
@@ -1639,6 +1648,10 @@ 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)
@@ -1749,6 +1762,32 @@ togglefullscr(const Arg *arg)
     setfullscreen(selmon->sel, !selmon->sel->isfullscreen);
 }
 
+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)
 {

patches/dwm-scratchpads-20200414-728d397b.diff

@@ -0,0 +1,199 @@
+From 728d397b21982af88737277fd9d6939a7b558786 Mon Sep 17 00:00:00 2001
+From: Christian Tenllado <ctenllado@gmail.com>
+Date: Tue, 14 Apr 2020 23:31:15 +0200
+Subject: [PATCH] Multiple scratchpads
+
+This patch enables multiple scratchpads, each with one asigned window.
+This enables the same scratchpad workflow that you have in i3.
+
+Scratchpads are implemented as special tags, whose mask does not
+apply to new spawned windows. To assign a window to a scratchpad you
+have to set up a rule, as you do with regular tags.
+
+Windows tagged with scratchpad tags can be set floating or not in the
+rules array. Most users would probably want them floating (i3 style),
+but having them tiled does also perfectly work and might fit better the
+DWM approach. In case they are set floating, the patch moves them to the
+center of the screen whenever they are shown. The patch can easily be
+modified to make this last feature configurable in the rules array (see
+the center patch).
+
+The togglescratch function, borrowed from the previous scratchpad patch
+and slightly modified, can be used to spawn a registered scratchpad
+process or toggle its view. This function looks for a window tagged with
+the selected scratchpad tag. If it is found its view is toggled. If it is
+not found the corresponding registered command is spawned. The
+config.def.h shows three examples of its use to spawn a terminal in the
+first scratchpad tag, a second terminal running ranger on the second
+scratchpad tag and the keepassxc application to manage passwords on a
+third scratchpad tag.
+
+If you prefer to spawn your scratchpad applications from the startup
+script, you might opt for binding keys to toggleview instead, as
+scratchpads are just special tags (you may even extend the TAGKEYS macro
+to generalize the key bindings).
+---
+ config.def.h | 28 ++++++++++++++++++++++++----
+ dwm.c        | 43 +++++++++++++++++++++++++++++++++++++++++--
+ 2 files changed, 65 insertions(+), 6 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 1c0b587..06265e1 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -18,17 +18,33 @@ static const char *colors[][3]      = {
+ 	[SchemeSel]  = { col_gray4, col_cyan,  col_cyan  },
+ };
+ 
++typedef struct {
++	const char *name;
++	const void *cmd;
++} Sp;
++const char *spcmd1[] = {"st", "-n", "spterm", "-g", "120x34", NULL };
++const char *spcmd2[] = {"st", "-n", "spfm", "-g", "144x41", "-e", "ranger", NULL };
++const char *spcmd3[] = {"keepassxc", NULL };
++static Sp scratchpads[] = {
++	/* name          cmd  */
++	{"spterm",      spcmd1},
++	{"spranger",    spcmd2},
++	{"keepassxc",   spcmd3},
++};
++
+ /* tagging */
+ static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
+-
+ static const Rule rules[] = {
+ 	/* xprop(1):
+ 	 *	WM_CLASS(STRING) = instance, class
+ 	 *	WM_NAME(STRING) = title
+ 	 */
+ 	/* class      instance    title       tags mask     isfloating   monitor */
+-	{ "Gimp",     NULL,       NULL,       0,            1,           -1 },
+-	{ "Firefox",  NULL,       NULL,       1 << 8,       0,           -1 },
++	{ "Gimp",	  NULL,			NULL,		0,				1,			 -1 },
++	{ "Firefox",  NULL,			NULL,		1 << 8,			0,			 -1 },
++	{ NULL,		  "spterm",		NULL,		SPTAG(0),		1,			 -1 },
++	{ NULL,		  "spfm",		NULL,		SPTAG(1),		1,			 -1 },
++	{ NULL,		  "keepassxc",	NULL,		SPTAG(2),		0,			 -1 },
+ };
+ 
+ /* layout(s) */
+@@ -59,6 +75,7 @@ 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 Key keys[] = {
+ 	/* modifier                     key        function        argument */
+ 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
+@@ -84,6 +101,9 @@ static Key keys[] = {
+ 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
+ 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
+ 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
++	{ MODKEY,            			XK_y,  	   togglescratch,  {.ui = 0 } },
++	{ MODKEY,            			XK_u,	   togglescratch,  {.ui = 1 } },
++	{ MODKEY,            			XK_x,	   togglescratch,  {.ui = 2 } },
+ 	TAGKEYS(                        XK_1,                      0)
+ 	TAGKEYS(                        XK_2,                      1)
+ 	TAGKEYS(                        XK_3,                      2)
+@@ -106,7 +126,7 @@ static Button buttons[] = {
+ 	{ ClkStatusText,        0,              Button2,        spawn,          {.v = termcmd } },
+ 	{ ClkClientWin,         MODKEY,         Button1,        movemouse,      {0} },
+ 	{ ClkClientWin,         MODKEY,         Button2,        togglefloating, {0} },
+-	{ ClkClientWin,         MODKEY,         Button3,        resizemouse,    {0} },
++	{ ClkClientWin,         MODKEY,         Button1,        resizemouse,    {0} },
+ 	{ ClkTagBar,            0,              Button1,        view,           {0} },
+ 	{ ClkTagBar,            0,              Button3,        toggleview,     {0} },
+ 	{ ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
+diff --git a/dwm.c b/dwm.c
+index 4465af1..646aa1a 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -54,7 +54,10 @@
+ #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
+ #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)
+ 
+ /* enums */
+@@ -211,6 +214,7 @@ 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);
+@@ -299,6 +303,11 @@ applyrules(Client *c)
+ 		{
+ 			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;
+@@ -308,7 +317,7 @@ 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
+@@ -1616,6 +1625,10 @@ 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)
+@@ -1719,6 +1732,32 @@ togglefloating(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)
+ {
+-- 
+2.20.1
+