[dwm] mastertag patch for dwm 3.1

[Archie Elberling]

Hello,
I have a vague idea this has been discussed before, but since it was a simple 
patch, I wrote it anyway and you can do what you like with it.
My main irratation with stock dwm* is that if you have multiple tags selected 
then when you create a window it will be tagged with all the currently selected 
tags.
Personally I have a tag I'm working on primarily, but will swap other tags in 
and out as I work which contain specific window(s). This tag adds a mastertag 
variable which is used as follows:
 * initally tag 0 is the master tag.
 * new windows are tagged with mastertag only.
 * if you switch tag with view, that tag becomes the mastertag.
 * if you toggle the master tag off the lowest selected tag becomes master.
This patch won't be for everybody, but I thought someone might have a use for 
it.

Regards,
Archie

*Apart from java, but my ire for that is fully aimed at sun

diff -r d6ca0f0dd71c dwm.h
--- a/dwm.h     Tue Jan 16 12:38:08 2007 +0000
+++ b/dwm.h     Tue Jan 16 12:41:15 2007 +0000
@@ -95,6 +95,7 @@ extern int wax, way, wah, waw;                        /* wind
 extern int wax, way, wah, waw;                 /* windowarea geometry */
 extern unsigned int master, nmaster;           /* master percent, number of 
master clients */
 extern unsigned int ntags, numlockmask;                /* number of tags, 
dynamic lock mask */
+extern unsigned int mastertag;            /* which tag is the current 'master' 
tag */ 
 extern void (*handler[LASTEvent])(XEvent *);   /* event handler */
 extern void (*arrange)(void);                  /* arrange function, indicates 
mode  */
 extern Atom wmatom[WMLast], netatom[NetLast];
diff -r d6ca0f0dd71c main.c
--- a/main.c    Tue Jan 16 12:38:08 2007 +0000
+++ b/main.c    Tue Jan 16 12:41:15 2007 +0000
@@ -20,7 +20,7 @@ char stext[256];
 char stext[256];
 Bool *seltag;
 int bh, bmw, screen, sx, sy, sw, sh, wax, way, waw, wah;
-unsigned int master, nmaster, ntags, numlockmask;
+unsigned int master, nmaster, ntags, numlockmask, mastertag;
 Atom wmatom[WMLast], netatom[NetLast];
 Bool running = True;
 Bool issel = True;
@@ -120,6 +120,7 @@ setup(void) {
        for(ntags = 0; tags[ntags]; ntags++);
        seltag = emallocz(sizeof(Bool) * ntags);
        seltag[0] = True;
+  mastertag = 0;
        /* style */
        dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
        dc.norm[ColBG] = getcolor(NORMBGCOLOR);
diff -r d6ca0f0dd71c tag.c
--- a/tag.c     Tue Jan 16 12:38:08 2007 +0000
+++ b/tag.c     Tue Jan 16 12:41:15 2007 +0000
@@ -103,7 +103,7 @@ settags(Client *c, Client *trans) {
        }
        if(!matched)
                for(i = 0; i < ntags; i++)
-                       c->tags[i] = seltag[i];
+                       c->tags[i] = mastertag == i;
 }
 
 void
diff -r d6ca0f0dd71c view.c
--- a/view.c    Tue Jan 16 12:38:08 2007 +0000
+++ b/view.c    Tue Jan 16 12:41:15 2007 +0000
@@ -225,9 +225,12 @@ toggleview(Arg *arg) {
        unsigned int i;
 
        seltag[arg->i] = !seltag[arg->i];
+        
        for(i = 0; i < ntags && !seltag[i]; i++);
        if(i == ntags)
                seltag[arg->i] = True; /* cannot toggle last view */
+  else
+    mastertag = (mastertag == arg->i) ? i : mastertag; /* check for new master 
*/
        arrange();
 }
 
@@ -239,6 +242,7 @@ view(Arg *arg) {
                seltag[i] = (arg->i == -1) ? True : False;
        if(arg->i >= 0 && arg->i < ntags)
                seltag[arg->i] = True;
+    mastertag = arg->i;
        arrange();
 }
 

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