From dad17ed7e8f24740110d4b64633d0193a84935e0 Mon Sep 17 00:00:00 2001
From: zachir <zachir@librem.one>
Date: Sat, 20 Mar 2021 23:17:37 -0500
Subject: Add scratchpads (htop, term, pulsemixer, bluetoothctl, ncmpcpp)

---
 dwm.c | 43 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 41 insertions(+), 2 deletions(-)

(limited to 'dwm.c')

diff --git a/dwm.c b/dwm.c
index cecbe53..5fb86a6 100644
--- a/dwm.c
+++ b/dwm.c
@@ -56,7 +56,10 @@
 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
 #define WIDTH(X)                ((X)->w + 2 * (X)->bw + gappx)
 #define HEIGHT(X)               ((X)->h + 2 * (X)->bw + gappx)
-#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 SYSTEM_TRAY_REQUEST_DOCK    0
@@ -268,6 +271,7 @@ static void tile(Monitor *);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
 static void togglefullscr(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);
@@ -379,6 +383,11 @@ applyrules(Client *c)
 			c->noswallow  = r->noswallow;
 			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;
@@ -388,7 +397,7 @@ 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
@@ -2139,6 +2148,10 @@ 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)
@@ -2303,6 +2316,32 @@ 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)
 {
-- 
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