From 2761ad72b4b8a80e434e7eba1a24676119ab666d Mon Sep 17 00:00:00 2001
From: Daniel Bylinka <daniel.bylinka@gmail.com>
Date: Sat, 18 Apr 2020 01:41:03 +0200
Subject: [PATCH] statuscmd: run shell commands based on mouse button and
 position when clicking statusbar

---
 config.def.h |  8 +++++++-
 dwm.c        | 47 ++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 51 insertions(+), 4 deletions(-)

diff --git a/config.def.h b/config.def.h
index 1c0b587..5cd7efa 100644
--- a/config.def.h
+++ b/config.def.h
@@ -59,6 +59,10 @@ 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 char *statuscmds[] = { "notify-send Mouse$BUTTON" };
+static char *statuscmd[] = { "/bin/sh", "-c", NULL, NULL };
+
 static Key keys[] = {
 	/* modifier                     key        function        argument */
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
@@ -103,7 +107,9 @@ 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 4465af1..d35d173 100644
--- a/dwm.c
+++ b/dwm.c
@@ -156,6 +156,7 @@ 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);
@@ -237,6 +238,9 @@ 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 */
@@ -421,6 +425,7 @@ buttonpress(XEvent *e)
 	Client *c;
 	Monitor *m;
 	XButtonPressedEvent *ev = &e->xbutton;
+	*lastbutton = '0' + ev->button;
 
 	click = ClkRootWin;
 	/* focus monitor if necessary */
@@ -439,9 +444,26 @@ buttonpress(XEvent *e)
 			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);
@@ -627,6 +649,19 @@ 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)
 {
@@ -1641,6 +1676,10 @@ 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);
+	}
 	if (fork() == 0) {
 		if (dpy)
 			close(ConnectionNumber(dpy));
@@ -1987,8 +2026,10 @@ 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);
 }
 
-- 
2.26.1