My dwm config.
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void
centeredmaster(Monitor *m)
{
unsigned int i, n;
int mx = 0, my = 0, mh = 0, mw = 0;
int lx = 0, ly = 0, lw = 0, lh = 0;
int rx = 0, ry = 0, rw = 0, rh = 0;
float mfacts = 0, lfacts = 0, rfacts = 0;
int mtotal = 0, ltotal = 0, rtotal = 0;
int mrest = 0, lrest = 0, rrest = 0;
Client *c;
#if VANITYGAPS_PATCH
int oh, ov, ih, iv;
getgaps(m, &oh, &ov, &ih, &iv, &n);
#else
for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
#endif // VANITYGAPS_PATCH
if (n == 0)
return;
/* initialize areas */
#if VANITYGAPS_PATCH
mx = m->wx + ov;
my = m->wy + oh;
mh = m->wh - 2*oh - ih * ((!m->nmaster ? n : MIN(n, m->nmaster)) - 1);
mw = m->ww - 2*ov;
lh = m->wh - 2*oh - ih * (((n - m->nmaster) / 2) - 1);
rh = m->wh - 2*oh - ih * (((n - m->nmaster) / 2) - ((n - m->nmaster) % 2 ? 0 : 1));
if (m->nmaster && n > m->nmaster) {
/* go mfact box in the center if more than nmaster clients */
if (n - m->nmaster > 1) {
/* ||<-S->|<---M--->|<-S->|| */
mw = (m->ww - 2*ov - 2*iv) * m->mfact;
lw = (m->ww - mw - 2*ov - 2*iv) / 2;
mx += lw + iv;
} else {
/* ||<---M--->|<-S->|| */
mw = (mw - iv) * m->mfact;
lw = m->ww - mw - iv - 2*ov;
}
rw = lw;
lx = m->wx + ov;
ly = m->wy + oh;
rx = mx + mw + iv;
ry = m->wy + oh;
}
#else
mx = m->wx;
my = m->wy;
mh = m->wh;
mw = m->ww;
lh = m->wh;
rh = m->wh;
if (m->nmaster && n > m->nmaster) {
/* go mfact box in the center if more than nmaster clients */
if (n - m->nmaster > 1) {
/* ||<-S->|<---M--->|<-S->|| */
mw = m->ww * m->mfact;
lw = (m->ww - mw) / 2;
mx += lw;
} else {
/* ||<---M--->|<-S->|| */
mw = mw * m->mfact;
lw = m->ww - mw;
}
rw = lw;
lx = m->wx;
ly = m->wy;
rx = mx + mw;
ry = m->wy;
}
#endif // VANITYGAPS_PATCH
/* calculate facts */
#if CFACTS_PATCH
for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) {
if (!m->nmaster || n < m->nmaster)
mfacts += c->cfact; // total factor of master area
else if ((n - m->nmaster) % 2)
lfacts += c->cfact; // total factor of left hand stack area
else
rfacts += c->cfact; // total factor of right hand stack area
}
for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++)
if (!m->nmaster || n < m->nmaster)
mtotal += mh / mfacts;
else if ((n - m->nmaster) % 2)
ltotal += lh * (c->cfact / lfacts);
else
rtotal += rh * (c->cfact / rfacts);
#else
for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) {
if (!m->nmaster || n < m->nmaster)
mfacts += 1;
else if ((n - m->nmaster) % 2)
lfacts += 1; // total factor of left hand stack area
else
rfacts += 1; // total factor of right hand stack area
}
for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++)
if (!m->nmaster || n < m->nmaster)
mtotal += mh / mfacts;
else if ((n - m->nmaster) % 2)
ltotal += lh / lfacts;
else
rtotal += rh / rfacts;
#endif // CFACTS_PATCH
mrest = mh - mtotal;
lrest = lh - ltotal;
rrest = rh - rtotal;
for (i = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++) {
if (!m->nmaster || i < m->nmaster) {
/* nmaster clients are stacked vertically, in the center of the screen */
#if CFACTS_PATCH
resize(c, mx, my, mw - (2*c->bw), (mh / mfacts) * c->cfact + (i < mrest ? 1 : 0) - (2*c->bw), 0);
#else
resize(c, mx, my, mw - (2*c->bw), (mh / mfacts) + (i < mrest ? 1 : 0) - (2*c->bw), 0);
#endif // CFACTS_PATCH
#if VANITYGAPS_PATCH
my += HEIGHT(c) + ih;
#else
my += HEIGHT(c);
#endif
} else {
/* stack clients are stacked vertically */
if ((i - m->nmaster) % 2 ) {
#if CFACTS_PATCH
resize(c, lx, ly, lw - (2*c->bw), (lh / lfacts) * c->cfact + ((i - 2*m->nmaster) < 2*lrest ? 1 : 0) - (2*c->bw), 0);
#else
resize(c, lx, ly, lw - (2*c->bw), (lh / lfacts) + ((i - 2*m->nmaster) < 2*lrest ? 1 : 0) - (2*c->bw), 0);
#endif // CFACTS_PATCH
#if VANITYGAPS_PATCH
ly += HEIGHT(c) + ih;
#else
ly += HEIGHT(c);
#endif
} else {
#if CFACTS_PATCH
resize(c, rx, ry, rw - (2*c->bw), (rh / rfacts) * c->cfact + ((i - 2*m->nmaster) < 2*rrest ? 1 : 0) - (2*c->bw), 0);
#else
resize(c, rx, ry, rw - (2*c->bw), (rh / rfacts) + ((i - 2*m->nmaster) < 2*rrest ? 1 : 0) - (2*c->bw), 0);
#endif // CFACTS_PATCH
#if VANITYGAPS_PATCH
ry += HEIGHT(c) + ih;
#else
ry += HEIGHT(c);
#endif
}
}
}
}