From 02c4a28dd7f3a88eef3a4e533ace35f79cf09d57 Mon Sep 17 00:00:00 2001
From: Daniel Bylinka <daniel.bylinka@gmail.com>
Date: Fri, 2 Apr 2021 19:34:38 +0200
Subject: [PATCH] [statuscmd] Run shell commands based on mouse location and
 button

---
 config.def.h | 10 ++++++-
 dwm.c        | 76 +++++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 81 insertions(+), 5 deletions(-)

diff --git a/config.def.h b/config.def.h
index 1c0b587..8f88366 100644
--- a/config.def.h
+++ b/config.def.h
@@ -59,6 +59,12 @@ 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 };
 
+/* commands spawned when clicking statusbar, the mouse button pressed is exported as BUTTON */
+static const StatusCmd statuscmds[] = {
+	{ "notify-send Mouse$BUTTON", 1 },
+};
+static const char *statuscmd[] = { "/bin/sh", "-c", NULL, NULL };
+
 static Key keys[] = {
 	/* modifier                     key        function        argument */
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
@@ -103,7 +109,9 @@ static Button buttons[] = {
 	{ ClkLtSymbol,          0,              Button1,        setlayout,      {0} },
 	{ ClkLtSymbol,          0,              Button3,        setlayout,      {.v = &layouts[2]} },
 	{ ClkWinTitle,          0,              Button2,        zoom,           {0} },
-	{ ClkStatusText,        0,              Button2,        spawn,          {.v = termcmd } },
+	{ ClkStatusText,        0,              Button1,        spawn,          {.v = statuscmd } },
+	{ ClkStatusText,        0,              Button2,        spawn,          {.v = statuscmd } },
+	{ ClkStatusText,        0,              Button3,        spawn,          {.v = statuscmd } },
 	{ ClkClientWin,         MODKEY,         Button1,        movemouse,      {0} },
 	{ ClkClientWin,         MODKEY,         Button2,        togglefloating, {0} },
 	{ ClkClientWin,         MODKEY,         Button3,        resizemouse,    {0} },
diff --git a/dwm.c b/dwm.c
index b0b3466..eb478a5 100644
--- a/dwm.c
+++ b/dwm.c
@@ -141,6 +141,11 @@ typedef struct {
 	int monitor;
 } Rule;
 
+typedef struct {
+	const char *cmd;
+	int id;
+} StatusCmd;
+
 /* function declarations */
 static void applyrules(Client *c);
 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
@@ -238,6 +243,9 @@ static void zoom(const Arg *arg);
 /* variables */
 static const char broken[] = "broken";
 static char stext[256];
+static int statusw;
+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 */
@@ -440,8 +448,27 @@ buttonpress(XEvent *e)
 			arg.ui = 1 << i;
 		} else if (ev->x < x + blw)
 			click = ClkLtSymbol;
-		else if (ev->x > selmon->ww - (int)TEXTW(stext))
+		else if (ev->x > selmon->ww - statusw) {
+			char *text, *s, ch;
+			*lastbutton = '0' + ev->button;
+
+			x = selmon->ww - statusw;
 			click = ClkStatusText;
+
+			statuscmdn = 0;
+			for (text = s = stext; *s && x <= ev->x; s++) {
+				if ((unsigned char)(*s) < ' ') {
+					ch = *s;
+					*s = '\0';
+					x += TEXTW(text) - lrpad;
+					*s = ch;
+					text = s + 1;
+					if (x >= ev->x)
+						break;
+					statuscmdn = ch;
+				}
+			}
+		}
 		else
 			click = ClkWinTitle;
 	} else if ((c = wintoclient(ev->window))) {
@@ -704,9 +731,24 @@ drawbar(Monitor *m)
 
 	/* draw status first so it can be overdrawn by tags later */
 	if (m == selmon) { /* status is only drawn on selected monitor */
+		char *text, *s, ch;
 		drw_setscheme(drw, scheme[SchemeNorm]);
-		tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
-		drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
+
+		x = 0;
+		for (text = s = stext; *s; s++) {
+			if ((unsigned char)(*s) < ' ') {
+				ch = *s;
+				*s = '\0';
+				tw = TEXTW(text) - lrpad;
+				drw_text(drw, m->ww - statusw + x, 0, tw, bh, 0, text, 0);
+				x += tw;
+				*s = ch;
+				text = s + 1;
+			}
+		}
+		tw = TEXTW(text) - lrpad + 2;
+		drw_text(drw, m->ww - statusw + x, 0, tw, bh, 0, text, 0);
+		tw = statusw;
 	}
 
 	for (c = m->clients; c; c = c->next) {
@@ -1645,6 +1687,17 @@ spawn(const Arg *arg)
 	if (fork() == 0) {
 		if (dpy)
 			close(ConnectionNumber(dpy));
+		if (arg->v == statuscmd) {
+			for (int i = 0; i < LENGTH(statuscmds); i++) {
+				if (statuscmdn == statuscmds[i].id) {
+					statuscmd[2] = statuscmds[i].cmd;
+					setenv("BUTTON", lastbutton, 1);
+					break;
+				}
+			}
+			if (!statuscmd[2])
+				exit(EXIT_SUCCESS);
+		}
 		setsid();
 		execvp(((char **)arg->v)[0], (char **)arg->v);
 		fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
@@ -1990,8 +2043,23 @@ updatesizehints(Client *c)
 void
 updatestatus(void)
 {
-	if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
+	if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext))) {
 		strcpy(stext, "dwm-"VERSION);
+		statusw = TEXTW(stext) - lrpad + 2;
+	} else {
+		char *text, *s, ch;
+		statusw = 0;
+		for (text = s = stext; *s; s++) {
+			if ((unsigned char)(*s) < ' ') {
+				ch = *s;
+				*s = '\0';
+				statusw += TEXTW(text) - lrpad;
+				*s = ch;
+				text = s + 1;
+			}
+		}
+		statusw += TEXTW(text) - lrpad + 2;
+	}
 	drawbar(selmon);
 }
 
-- 
2.31.0