From ea7c5b14499b89b30ac95155db7e8ded0fbfde9d Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.dev>
Date: Thu, 13 Feb 2025 20:36:26 +0000
Subject: [PATCH] dwm: add pertag patch
> More general approach to taglayouts patch. This patch keeps layout,
mwfact, barpos and nmaster per tag.
https://dwm.suckless.org/patches/pertag
---
nix/overlays/default.nix | 1 +
patches/dwm/dwm-pertag-20200914-61bb8b2.diff | 177 +++++++++++++++++++
2 files changed, 178 insertions(+)
create mode 100644 patches/dwm/dwm-pertag-20200914-61bb8b2.diff
diff --git a/nix/overlays/default.nix b/nix/overlays/default.nix
index 93f0674d..67a75626 100644
--- a/nix/overlays/default.nix
+++ b/nix/overlays/default.nix
@@ -15,6 +15,7 @@
"${self}/patches/dwm/add-custom-commands-and-keys.patch"
"${self}/patches/dwm/change-mod-key.patch"
"${self}/patches/dwm/dwm-hide_vacant_tags-6.4.diff"
+ "${self}/patches/dwm/dwm-pertag-20200914-61bb8b2.diff"
];
};
diff --git a/patches/dwm/dwm-pertag-20200914-61bb8b2.diff b/patches/dwm/dwm-pertag-20200914-61bb8b2.diff
new file mode 100644
index 00000000..c8d7fbcb
--- /dev/null
+++ b/patches/dwm/dwm-pertag-20200914-61bb8b2.diff
@@ -0,0 +1,177 @@
+diff --git a/dwm.c b/dwm.c
+index 664c527..ac8e4ec 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -111,6 +111,7 @@ typedef struct {
+ void (*arrange)(Monitor *);
+ } Layout;
+
++typedef struct Pertag Pertag;
+ struct Monitor {
+ char ltsymbol[16];
+ float mfact;
+@@ -130,6 +131,7 @@ struct Monitor {
+ Monitor *next;
+ Window barwin;
+ const Layout *lt[2];
++ Pertag *pertag;
+ };
+
+ typedef struct {
+@@ -272,6 +274,15 @@ static Window root, wmcheckwin;
+ /* configuration, allows nested code to access above variables */
+ #include "config.h"
+
++struct Pertag {
++ unsigned int curtag, prevtag; /* current and previous tag */
++ int nmasters[LENGTH(tags) + 1]; /* number of windows in master area */
++ float mfacts[LENGTH(tags) + 1]; /* mfacts per tag */
++ unsigned int sellts[LENGTH(tags) + 1]; /* selected layouts */
++ const Layout *ltidxs[LENGTH(tags) + 1][2]; /* matrix of tags and layouts indexes */
++ int showbars[LENGTH(tags) + 1]; /* display bar for the current tag */
++};
++
+ /* compile-time check if all tags fit into an unsigned int bit array. */
+ struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
+
+@@ -632,6 +643,7 @@ Monitor *
+ createmon(void)
+ {
+ Monitor *m;
++ unsigned int i;
+
+ m = ecalloc(1, sizeof(Monitor));
+ m->tagset[0] = m->tagset[1] = 1;
+@@ -642,6 +654,20 @@ createmon(void)
+ m->lt[0] = &layouts[0];
+ m->lt[1] = &layouts[1 % LENGTH(layouts)];
+ strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
++ m->pertag = ecalloc(1, sizeof(Pertag));
++ m->pertag->curtag = m->pertag->prevtag = 1;
++
++ for (i = 0; i <= LENGTH(tags); i++) {
++ m->pertag->nmasters[i] = m->nmaster;
++ m->pertag->mfacts[i] = m->mfact;
++
++ m->pertag->ltidxs[i][0] = m->lt[0];
++ m->pertag->ltidxs[i][1] = m->lt[1];
++ m->pertag->sellts[i] = m->sellt;
++
++ m->pertag->showbars[i] = m->showbar;
++ }
++
+ return m;
+ }
+
+@@ -967,7 +993,7 @@ grabkeys(void)
+ void
+ incnmaster(const Arg *arg)
+ {
+- selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
++ selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag] = MAX(selmon->nmaster + arg->i, 0);
+ arrange(selmon);
+ }
+
+@@ -1502,9 +1528,9 @@ void
+ setlayout(const Arg *arg)
+ {
+ if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
+- selmon->sellt ^= 1;
++ selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag] ^= 1;
+ if (arg && arg->v)
+- selmon->lt[selmon->sellt] = (Layout *)arg->v;
++ selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt] = (Layout *)arg->v;
+ strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
+ if (selmon->sel)
+ arrange(selmon);
+@@ -1523,7 +1549,7 @@ setmfact(const Arg *arg)
+ f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
+ if (f < 0.05 || f > 0.95)
+ return;
+- selmon->mfact = f;
++ selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag] = f;
+ arrange(selmon);
+ }
+
+@@ -1702,7 +1728,7 @@ tile(Monitor *m)
+ void
+ togglebar(const Arg *arg)
+ {
+- selmon->showbar = !selmon->showbar;
++ selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
+ updatebarpos(selmon);
+ XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+ arrange(selmon);
+@@ -1741,9 +1767,33 @@ void
+ toggleview(const Arg *arg)
+ {
+ unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
++ int i;
+
+ if (newtagset) {
+ selmon->tagset[selmon->seltags] = newtagset;
++
++ if (newtagset == ~0) {
++ selmon->pertag->prevtag = selmon->pertag->curtag;
++ selmon->pertag->curtag = 0;
++ }
++
++ /* test if the user did not select the same tag */
++ if (!(newtagset & 1 << (selmon->pertag->curtag - 1))) {
++ selmon->pertag->prevtag = selmon->pertag->curtag;
++ for (i = 0; !(newtagset & 1 << i); i++) ;
++ selmon->pertag->curtag = i + 1;
++ }
++
++ /* apply settings for this view */
++ selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
++ selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
++ selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
++ selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
++ selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
++
++ if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
++ togglebar(NULL);
++
+ focus(NULL);
+ arrange(selmon);
+ }
+@@ -2038,11 +2088,37 @@ updatewmhints(Client *c)
+ void
+ view(const Arg *arg)
+ {
++ int i;
++ unsigned int tmptag;
++
+ if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
+ return;
+ selmon->seltags ^= 1; /* toggle sel tagset */
+- if (arg->ui & TAGMASK)
++ if (arg->ui & TAGMASK) {
+ selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
++ selmon->pertag->prevtag = selmon->pertag->curtag;
++
++ if (arg->ui == ~0)
++ selmon->pertag->curtag = 0;
++ else {
++ for (i = 0; !(arg->ui & 1 << i); i++) ;
++ selmon->pertag->curtag = i + 1;
++ }
++ } else {
++ tmptag = selmon->pertag->prevtag;
++ selmon->pertag->prevtag = selmon->pertag->curtag;
++ selmon->pertag->curtag = tmptag;
++ }
++
++ selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
++ selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
++ selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
++ selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
++ selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
++
++ if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
++ togglebar(NULL);
++
+ focus(NULL);
+ arrange(selmon);
+ }