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From 713fa8650f5a20006451ebcccf57a4512e83bae8 Mon Sep 17 00:00:00 2001
From: Arda Atci <arda@phytech.io>
Date: Wed, 18 May 2022 17:23:16 +0300
Subject: [PATCH] preserve clients on old tags when renewing dwm
By default, when dwm is recompiled-restarted all clients will
lose it's current tag and collapse to first tag. This patch preserves
clients on old tags, however note that layout order is not preserved.
---
dwm.c | 38 +++++++++++++++++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)
diff --git a/dwm.c b/dwm.c
index a96f33c..a12e0bd 100644
--- a/dwm.c
+++ b/dwm.c
@@ -62,7 +62,7 @@ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { SchemeNorm, SchemeSel }; /* color schemes */
enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
NetWMFullscreen, NetActiveWindow, NetWMWindowType,
- NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
+ NetWMWindowTypeDialog, NetClientList, NetClientInfo, NetLast }; /* EWMH atoms */
enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
@@ -198,6 +198,7 @@ static void scan(void);
static int sendevent(Client *c, Atom proto);
static void sendmon(Client *c, Monitor *m);
static void setclientstate(Client *c, long state);
+static void setclienttagprop(Client *c);
static void setfocus(Client *c);
static void setfullscreen(Client *c, int fullscreen);
static void setlayout(const Arg *arg);
@@ -1060,6 +1061,26 @@ manage(Window w, XWindowAttributes *wa)
updatewindowtype(c);
updatesizehints(c);
updatewmhints(c);
+ {
+ int format;
+ unsigned long *data, n, extra;
+ Monitor *m;
+ Atom atom;
+ if (XGetWindowProperty(dpy, c->win, netatom[NetClientInfo], 0L, 2L, False, XA_CARDINAL,
+ &atom, &format, &n, &extra, (unsigned char **)&data) == Success && n == 2) {
+ c->tags = *data;
+ for (m = mons; m; m = m->next) {
+ if (m->num == *(data+1)) {
+ c->mon = m;
+ break;
+ }
+ }
+ }
+ if (n > 0)
+ XFree(data);
+ }
+ setclienttagprop(c);
+
XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
grabbuttons(c, 0);
if (!c->isfloating)
@@ -1423,6 +1444,7 @@ sendmon(Client *c, Monitor *m)
c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
attach(c);
attachstack(c);
+ setclienttagprop(c);
focus(NULL);
arrange(NULL);
}
@@ -1566,6 +1588,7 @@ setup(void)
netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
+ netatom[NetClientInfo] = XInternAtom(dpy, "_NET_CLIENT_INFO", False);
/* init cursors */
cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
cursor[CurResize] = drw_cur_create(drw, XC_sizing);
@@ -1589,6 +1612,7 @@ setup(void)
XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
PropModeReplace, (unsigned char *) netatom, NetLast);
XDeleteProperty(dpy, root, netatom[NetClientList]);
+ XDeleteProperty(dpy, root, netatom[NetClientInfo]);
/* select events */
wa.cursor = cursor[CurNormal]->cursor;
wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
@@ -1656,11 +1680,22 @@ spawn(const Arg *arg)
}
}
+void
+setclienttagprop(Client *c)
+{
+ long data[] = { (long) c->tags, (long) c->mon->num };
+ XChangeProperty(dpy, c->win, netatom[NetClientInfo], XA_CARDINAL, 32,
+ PropModeReplace, (unsigned char *) data, 2);
+}
+
void
tag(const Arg *arg)
{
+ Client *c;
if (selmon->sel && arg->ui & TAGMASK) {
+ c = selmon->sel;
selmon->sel->tags = arg->ui & TAGMASK;
+ setclienttagprop(c);
focus(NULL);
arrange(selmon);
}
@@ -1735,6 +1770,7 @@ toggletag(const Arg *arg)
newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
if (newtags) {
selmon->sel->tags = newtags;
+ setclienttagprop(selmon->sel);
focus(NULL);
arrange(selmon);
}
--
2.36.1
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