add steam patch

dwm-steam-6.2.diff

@@ -0,0 +1,63 @@
+From 2550931c66e10e667ce56a6761cbadd12b331c52 Mon Sep 17 00:00:00 2001
+From: bakkeby <bakkeby@gmail.com>
+Date: Mon, 10 Aug 2020 16:45:00 +0200
+Subject: [PATCH] Steam patch
+
+Steam, and steam windows (games), trigger a ConfigureNotify request every time the window
+gets focus. More so, the configure event passed along from Steam tends to have the wrong
+x and y coordinates which can make the window, if floating, jump around the screen.
+
+This patch works around this age-old issue by ignoring the x and y co-ordinates for
+ConfigureNotify requests relating to Steam windows.
+---
+ dwm.c | 20 +++++++++++++-------
+ 1 file changed, 13 insertions(+), 7 deletions(-)
+
+diff --git a/dwm.c b/dwm.c
+index 4465af1..598d36d 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -93,6 +93,7 @@ struct Client {
+ 	int bw, oldbw;
+ 	unsigned int tags;
+ 	int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
++	int issteam;
+ 	Client *next;
+ 	Client *snext;
+ 	Monitor *mon;
+@@ -291,6 +292,9 @@ applyrules(Client *c)
+ 	class    = ch.res_class ? ch.res_class : broken;
+ 	instance = ch.res_name  ? ch.res_name  : broken;
+
++	if (strstr(class, "Steam") || strstr(class, "steam_app_"))
++		c->issteam = 1;
++
+ 	for (i = 0; i < LENGTH(rules); i++) {
+ 		r = &rules[i];
+ 		if ((!r->title || strstr(c->name, r->title))
+@@ -588,13 +592,15 @@ configurerequest(XEvent *e)
+ 			c->bw = ev->border_width;
+ 		else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
+ 			m = c->mon;
+-			if (ev->value_mask & CWX) {
+-				c->oldx = c->x;
+-				c->x = m->mx + ev->x;
+-			}
+-			if (ev->value_mask & CWY) {
+-				c->oldy = c->y;
+-				c->y = m->my + ev->y;
++			if (!c->issteam) {
++				if (ev->value_mask & CWX) {
++					c->oldx = c->x;
++					c->x = m->mx + ev->x;
++				}
++				if (ev->value_mask & CWY) {
++					c->oldy = c->y;
++					c->y = m->my + ev->y;
++				}
+ 			}
+ 			if (ev->value_mask & CWWidth) {
+ 				c->oldw = c->w;
+--
+2.19.1
+

dwm.c

@@ -93,6 +93,7 @@ struct Client {
 	int bw, oldbw;
 	unsigned int tags;
 	int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
+	int issteam;
 	Client *next;
 	Client *snext;
 	Monitor *mon;
@@ -322,6 +323,9 @@ applyrules(Client *c)
 	class    = ch.res_class ? ch.res_class : broken;
 	instance = ch.res_name  ? ch.res_name  : broken;
 
+	if (strstr(class, "Steam") || strstr(class, "steam_app_"))
+		c->issteam = 1;
+
 	for (i = 0; i < LENGTH(rules); i++) {
 		r = &rules[i];
 		if ((!r->title || strstr(c->name, r->title))
@@ -619,6 +623,7 @@ configurerequest(XEvent *e)
 			c->bw = ev->border_width;
 		else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
 			m = c->mon;
+			if (!c->issteam) {
 				if (ev->value_mask & CWX) {
 					c->oldx = c->x;
 					c->x = m->mx + ev->x;
@@ -627,6 +632,7 @@ configurerequest(XEvent *e)
 					c->oldy = c->y;
 					c->y = m->my + ev->y;
 				}
+			}
 			if (ev->value_mask & CWWidth) {
 				c->oldw = c->w;
 				c->w = ev->width;

dwm.c.orig

@@ -235,6 +235,7 @@ static int xerror(Display *dpy, XErrorEvent *ee);
 static int xerrordummy(Display *dpy, XErrorEvent *ee);
 static int xerrorstart(Display *dpy, XErrorEvent *ee);
 static void zoom(const Arg *arg);
+static void autostart_exec(void);
 
 /* variables */
 static const char broken[] = "broken";
@@ -276,6 +277,34 @@ static Window root, wmcheckwin;
 /* compile-time check if all tags fit into an unsigned int bit array. */
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
+/* dwm will keep pid's of processes from autostart array and kill them at quit */
+static pid_t *autostart_pids;
+static size_t autostart_len;
+
+/* execute command from autostart array */
+static void
+autostart_exec() {
+	const char *const *p;
+	size_t i = 0;
+
+	/* count entries */
+	for (p = autostart; *p; autostart_len++, p++)
+		while (*++p);
+
+	autostart_pids = malloc(autostart_len * sizeof(pid_t));
+	for (p = autostart; *p; i++, p++) {
+		if ((autostart_pids[i] = fork()) == 0) {
+			setsid();
+			execvp(*p, (char *const *)p);
+			fprintf(stderr, "dwm: execvp %s\n", *p);
+			perror(" failed");
+			_exit(EXIT_FAILURE);
+		}
+		/* skip arguments */
+		while (*++p);
+	}
+}
+
 /* function implementations */
 void
 applyrules(Client *c)
@@ -1277,6 +1306,16 @@ propertynotify(XEvent *e)
 void
 quit(const Arg *arg)
 {
+	size_t i;
+
+	/* kill child processes */
+	for (i = 0; i < autostart_len; i++) {
+		if (0 < autostart_pids[i]) {
+			kill(autostart_pids[i], SIGTERM);
+			waitpid(autostart_pids[i], NULL, 0);
+		}
+	}
+
 	running = 0;
 }
 
@@ -1670,9 +1709,25 @@ showhide(Client *c)
 void
 sigchld(int unused)
 {
+	pid_t pid;
+
 	if (signal(SIGCHLD, sigchld) == SIG_ERR)
 		die("can't install SIGCHLD handler:");
-	while (0 < waitpid(-1, NULL, WNOHANG));
+	while (0 < (pid = waitpid(-1, NULL, WNOHANG))) {
+		pid_t *p, *lim;
+
+		if (!(p = autostart_pids))
+			continue;
+		lim = &p[autostart_len];
+
+		for (; p < lim; p++) {
+			if (*p == pid) {
+				*p = -1;
+				break;
+			}
+		}
+
+	}
 }
 
 void
@@ -2175,6 +2230,7 @@ main(int argc, char *argv[])
 	if (!(dpy = XOpenDisplay(NULL)))
 		die("dwm: cannot open display");
 	checkotherwm();
+	autostart_exec();
 	setup();
 #ifdef __OpenBSD__
 	if (pledge("stdio rpath proc exec", NULL) == -1)