commit 13c44154665d91747e88d57a0cf5e339db18775f
Author: Syed Shah <syed@hp-1>
Date:   Sun Aug 30 14:14:08 2020 +0100

    fullgaps but with toggle function and Gap struct
    
    [Alt]+[Shift]+[=] toggles gaps. Re-enabling gaps will return to the
    previous gap size.
    
    [Alt]+[Shift]+[-] resets gaps to default value in `conifg.h`.
    
    The Gap struct is defined as follows:
    
    typdef struct {
            int isgap;
            int realgap;
            int gappx;
    } Gap;
    
    See `void setgaps(Arg *arg) {...}` for how this works.

diff --git 
a/dwm.suckless.org/patches/fullgaps/dwm-fullgaps-toggle-20200830.diff 
b/dwm.suckless.org/patches/fullgaps/dwm-fullgaps-toggle-20200830.diff
new file mode 100644
index 00000000..78a2b3d3
--- /dev/null
+++ b/dwm.suckless.org/patches/fullgaps/dwm-fullgaps-toggle-20200830.diff
@@ -0,0 +1,148 @@
+diff --git a/config.def.h b/config.def.h
+index 1c0b587..b172f63 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -2,6 +2,7 @@
+ 
+ /* appearance */
+ static const unsigned int borderpx  = 1;        /* border pixel of windows */
++static const Gap default_gap        = {.isgap = 1, .realgap = 10, .gappx = 
10};
+ static const unsigned int snap      = 32;       /* snap pixel */
+ static const int showbar            = 1;        /* 0 means no bar */
+ static const int topbar             = 1;        /* 0 means bottom bar */
+@@ -84,6 +85,10 @@ static Key keys[] = {
+       { MODKEY,                       XK_period, focusmon,       {.i = +1 } },
+       { MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
+       { MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
++      { MODKEY,                       XK_minus,  setgaps,        {.i = -5 } },
++      { MODKEY,                       XK_equal,  setgaps,        {.i = +5 } },
++      { MODKEY|ShiftMask,             XK_minus,  setgaps,        {.i = 
GAP_RESET } },
++      { MODKEY|ShiftMask,             XK_equal,  setgaps,        {.i = 
GAP_TOGGLE} },
+       TAGKEYS(                        XK_1,                      0)
+       TAGKEYS(                        XK_2,                      1)
+       TAGKEYS(                        XK_3,                      2)
+diff --git a/dwm.c b/dwm.c
+index 664c527..fc66348 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -57,6 +57,9 @@
+ #define TAGMASK                 ((1 << LENGTH(tags)) - 1)
+ #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
+ 
++#define GAP_TOGGLE 1 << 32
++#define GAP_RESET  0
++
+ /* enums */
+ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
+ enum { SchemeNorm, SchemeSel }; /* color schemes */
+@@ -111,6 +114,12 @@ typedef struct {
+       void (*arrange)(Monitor *);
+ } Layout;
+ 
++typedef struct {
++      int isgap;
++      int realgap;
++      int gappx;
++} Gap;
++
+ struct Monitor {
+       char ltsymbol[16];
+       float mfact;
+@@ -119,6 +128,7 @@ struct Monitor {
+       int by;               /* bar geometry */
+       int mx, my, mw, mh;   /* screen size */
+       int wx, wy, ww, wh;   /* window area  */
++      Gap *gap;
+       unsigned int seltags;
+       unsigned int sellt;
+       unsigned int tagset[2];
+@@ -169,6 +179,7 @@ static void focus(Client *c);
+ static void focusin(XEvent *e);
+ static void focusmon(const Arg *arg);
+ static void focusstack(const Arg *arg);
++static void gap_copy(Gap *to, const Gap *from);
+ static Atom getatomprop(Client *c, Atom prop);
+ static int getrootptr(int *x, int *y);
+ static long getstate(Window w);
+@@ -200,6 +211,7 @@ static void sendmon(Client *c, Monitor *m);
+ static void setclientstate(Client *c, long state);
+ static void setfocus(Client *c);
+ static void setfullscreen(Client *c, int fullscreen);
++static void setgaps(const Arg *arg);
+ static void setlayout(const Arg *arg);
+ static void setmfact(const Arg *arg);
+ static void setup(void);
+@@ -639,6 +651,8 @@ createmon(void)
+       m->nmaster = nmaster;
+       m->showbar = showbar;
+       m->topbar = topbar;
++      m->gap = malloc(sizeof(Gap));
++      gap_copy(m->gap, &default_gap);
+       m->lt[0] = &layouts[0];
+       m->lt[1] = &layouts[1 % LENGTH(layouts)];
+       strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+@@ -1498,6 +1512,35 @@ setfullscreen(Client *c, int fullscreen)
+       }
+ }
+ 
++void
++gap_copy(Gap *to, const Gap *from)
++{
++      to->isgap   = from->isgap;
++      to->realgap = from->realgap;
++      to->gappx   = from->gappx;
++}
++
++void
++setgaps(const Arg *arg)
++{
++      Gap *p = selmon->gap;
++      switch(arg->i)
++      {
++              case GAP_TOGGLE:
++                      p->isgap = 1 - p->isgap;
++                      break;
++              case GAP_RESET:
++                      gap_copy(p, &default_gap);
++                      break;
++              default:
++                      p->realgap += arg->i;
++                      p->isgap = 1;
++      }
++      p->realgap = MAX(p->realgap, 0);
++      p->gappx = p->realgap * p->isgap;
++      arrange(selmon);
++}
++
+ void
+ setlayout(const Arg *arg)
+ {
+@@ -1684,18 +1727,18 @@ tile(Monitor *m)
+       if (n > m->nmaster)
+               mw = m->nmaster ? m->ww * m->mfact : 0;
+       else
+-              mw = m->ww;
+-      for (i = my = ty = 0, c = nexttiled(m->clients); c; c = 
nexttiled(c->next), i++)
++              mw = m->ww - m->gap->gappx;
++      for (i = 0, my = ty = m->gap->gappx, c = nexttiled(m->clients); c; c = 
nexttiled(c->next), i++)
+               if (i < m->nmaster) {
+-                      h = (m->wh - my) / (MIN(n, m->nmaster) - i);
+-                      resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - 
(2*c->bw), 0);
+-                      if (my + HEIGHT(c) < m->wh)
+-                              my += HEIGHT(c);
++                      h = (m->wh - my) / (MIN(n, m->nmaster) - i) - 
m->gap->gappx;
++                      resize(c, m->wx + m->gap->gappx, m->wy + my, mw - 
(2*c->bw) - m->gap->gappx, h - (2*c->bw), 0);
++                      if (my + HEIGHT(c) + m->gap->gappx < m->wh)
++                              my += HEIGHT(c) + m->gap->gappx;
+               } else {
+-                      h = (m->wh - ty) / (n - i);
+-                      resize(c, m->wx + mw, m->wy + ty, m->ww - mw - 
(2*c->bw), h - (2*c->bw), 0);
+-                      if (ty + HEIGHT(c) < m->wh)
+-                              ty += HEIGHT(c);
++                      h = (m->wh - ty) / (n - i) - m->gap->gappx;
++                      resize(c, m->wx + mw + m->gap->gappx, m->wy + ty, m->ww 
- mw - (2*c->bw) - 2*m->gap->gappx, h - (2*c->bw), 0);
++                      if (ty + HEIGHT(c) + m->gap->gappx < m->wh)
++                              ty += HEIGHT(c) + m->gap->gappx;
+               }
+ }
+ 
diff --git a/dwm.suckless.org/patches/fullgaps/index.md 
b/dwm.suckless.org/patches/fullgaps/index.md
index 57344450..a8e5c458 100644
--- a/dwm.suckless.org/patches/fullgaps/index.md
+++ b/dwm.suckless.org/patches/fullgaps/index.md
@@ -17,7 +17,15 @@ Download
 * [dwm-fullgaps-6.2.diff](dwm-fullgaps-6.2.diff)
 * [dwm-fullgaps-20200508-7b77734.diff](dwm-fullgaps-20200508-7b77734.diff)
 
+The following patch allows for gaps to be toggled, and also uses a `Gap` struct
+to contain the gap information, in anticipation of this being used with
+[pertag](../pertag/). (To use this, apply the patch *instead* of the default
+fullgaps patch.)
+
+* [dwm-fullgaps-toggle-20200830.diff](dwm-fullgaps-toggle-20200830.diff)
+
 Author
 ------
 * Maciej Janicki <[email protected]>
 * David Julien <[email protected]> (20200504-b2e1dfc port)
+* Klein Bottle <[email protected]> (dwm-fullgaps-toggle...)


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