Added pertag patch

README.md

@@ -11,13 +11,15 @@ Refer to [https://dwm.suckless.org/](https://dwm.suckless.org/) for details on t
 
 ### Changelog:
 
-2019-09-05 - Systray patch added
+2019-09-05 - Alpha, systray and pertag patches added
-2019-09-05 - Alpha patch added
 
 ### Patches included:
 
    - [alpha](https://dwm.suckless.org/patches/alpha/)
       - adds transparency for the status bar
 
+   - [pertag](https://dwm.suckless.org/patches/pertag/)
+      - adds nmaster, mfact, layouts and more per tag rather than per monitor
+
    - [systray](https://dwm.suckless.org/patches/systray/)
       - adds system tray in the status bar

dwm.c

@@ -118,6 +118,9 @@ typedef struct {
 	void (*arrange)(Monitor *);
 } Layout;
 
+#if PERTAG_PATCH
+typedef struct Pertag Pertag;
+#endif // PERTAG_PATCH
 struct Monitor {
 	char ltsymbol[16];
 	float mfact;
@@ -137,6 +140,9 @@ struct Monitor {
 	Monitor *next;
 	Window barwin;
 	const Layout *lt[2];
+	#if PERTAG_PATCH
+	Pertag *pertag;
+	#endif // PERTAG_PATCH
 };
 
 typedef struct {
@@ -713,6 +719,9 @@ Monitor *
 createmon(void)
 {
 	Monitor *m;
+	#if PERTAG_PATCH
+	int i;
+	#endif // PERTAG_PATCH
 
 	m = ecalloc(1, sizeof(Monitor));
 	m->tagset[0] = m->tagset[1] = 1;
@@ -723,6 +732,31 @@ createmon(void)
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+	#if PERTAG_PATCH
+	if (!(m->pertag = (Pertag *)calloc(1, sizeof(Pertag))))
+		die("fatal: could not malloc() %u bytes\n", sizeof(Pertag));
+	m->pertag->curtag = m->pertag->prevtag = 1;
+	for (i=0; i <= LENGTH(tags); i++) {
+		/* init nmaster */
+		m->pertag->nmasters[i] = m->nmaster;
+
+		/* init mfacts */
+		m->pertag->mfacts[i] = m->mfact;
+
+		/* init layouts */
+		m->pertag->ltidxs[i][0] = m->lt[0];
+		m->pertag->ltidxs[i][1] = m->lt[1];
+		m->pertag->sellts[i] = m->sellt;
+
+		#if PERTAGBAR_PATCH
+		/* init showbar */
+		m->pertag->showbars[i] = m->showbar;
+
+		/* swap focus and zoomswap*/
+		m->pertag->prevzooms[i] = NULL;
+		#endif // PERTAGBAR_PATCH
+	}
+	#endif // PERTAG_PATCH
 	return m;
 }
 
@@ -1108,7 +1142,11 @@ grabkeys(void)
 void
 incnmaster(const Arg *arg)
 {
+	#if PERTAG_PATCH
+	selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag] = MAX(selmon->nmaster + arg->i, 0);
+	#else
 	selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
+	#endif // PERTAG_PATCH
 	arrange(selmon);
 }
 
@@ -1705,10 +1743,21 @@ setfullscreen(Client *c, int fullscreen)
 void
 setlayout(const Arg *arg)
 {
-	if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
+	if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt]) {
+		#if PERTAG_PATCH
+		selmon->pertag->sellts[selmon->pertag->curtag] ^= 1;
+		selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
+		#else
 		selmon->sellt ^= 1;
+		#endif // PERTAG_PATCH
+	}
 	if (arg && arg->v)
+	#if PERTAG_PATCH
+		selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt] = (Layout *)arg->v;
+	selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
+	#else
 		selmon->lt[selmon->sellt] = (Layout *)arg->v;
+	#endif // PERTAG_PATCH
 	strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
 	if (selmon->sel)
 		arrange(selmon);
@@ -1727,7 +1776,11 @@ setmfact(const Arg *arg)
 	f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
 	if (f < 0.1 || f > 0.9)
 		return;
+	#if PERTAG_PATCH
+	selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag] = f;
+	#else
 	selmon->mfact = f;
+	#endif // PERTAG_PATCH
 	arrange(selmon);
 }
 
@@ -1929,7 +1982,11 @@ tile(Monitor *m)
 void
 togglebar(const Arg *arg)
 {
+	#if PERTAG_PATCH && PERTAGBAR_PATCH
+	selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
+	#else
 	selmon->showbar = !selmon->showbar;
+	#endif // PERTAG_PATCH
 	updatebarpos(selmon);
 	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
 	#if SYSTRAY_PATCH
@@ -1981,9 +2038,36 @@ void
 toggleview(const Arg *arg)
 {
 	unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
+	#if PERTAG_PATCH
+	int i;
+	#endif // PERTAG_PATCH
 
 	if (newtagset) {
 		selmon->tagset[selmon->seltags] = newtagset;
+
+		#if PERTAG_PATCH
+		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 PERTAGBAR_PATCH
+		if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
+			togglebar(NULL);
+		#endif // PERTAGBAR_PATCH
+		#endif // PERTAG_PATCH
 		focus(NULL);
 		arrange(selmon);
 	}
@@ -2312,11 +2396,42 @@ updatewmhints(Client *c)
 void
 view(const Arg *arg)
 {
+	#if PERTAG_PATCH
+	int i;
+	unsigned int tmptag;
+	#endif // PERTAG_PATCH
+
 	if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
 		return;
 	selmon->seltags ^= 1; /* toggle sel tagset */
+	#if PERTAG_PATCH
+	if (arg->ui & TAGMASK) {
+		selmon->pertag->prevtag = selmon->pertag->curtag;
+		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+		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 PERTAGBAR_PATCH
+	if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
+		togglebar(NULL);
+	#endif // PERTAGBAR_PATCH
+	#else
 	if (arg->ui & TAGMASK)
 		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+	#endif // PERTAG_PATCH
 	focus(NULL);
 	arrange(selmon);
 }

patch/include.c

@@ -2,6 +2,10 @@
 #include "alpha.c"
 #endif
 
+#if PERTAG_PATCH
+#include "pertag.c"
+#endif
+
 #if SYSTRAY_PATCH
 #include "systray.c"
 #endif

patch/pertag.c

@@ -0,0 +1,11 @@
+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  */
+	#if PERTAGBAR_PATCH
+	Bool showbars[LENGTH(tags) + 1]; /* display bar for the current tag */
+	#endif // PERTAGBAR_PATCH
+	Client *prevzooms[LENGTH(tags) + 1]; /* store zoom information */
+};

patches.h

@@ -7,14 +7,23 @@
  * relevant descriptions.
  */
 
-/*
+/* The alpha patch adds transparency for the status bar.
- * The alpha patch adds transparency for the status bar.
  * https://dwm.suckless.org/patches/alpha/
  */
 #define ALPHA_PATCH 0
 
-/*
+/* The systray patch adds systray for the status bar.
- * The systray patch adds systray for the status bar.
  * https://dwm.suckless.org/patches/systray/
  */
 #define SYSTRAY_PATCH 0
+
+/* The pertag patch adds nmaster, mfacts and layouts per tag rather
+ * than per monitor (default).
+ * https://dwm.suckless.org/patches/pertag/
+ */
+#define PERTAG_PATCH 0
+
+/* This controls whether or not to also store bar position on a per
+ * tag basis, or leave it as one bar per monitor.
+ */
+#define PERTAGBAR_PATCH 0