dwm/layout.c

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/* See LICENSE file for copyright and license details. */
#include "dwm.h"
#include <stdio.h>
#include <stdlib.h>
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unsigned int blw = 0;
Layout *lt = NULL;
/* static */
static double hratio = HRATIO;
static double vratio = VRATIO;
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static unsigned int nlayouts = 0;
static unsigned int nmaster = NMASTER;
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static double /* simple pow() */
spow(double x, double y)
{
if(y == 0)
return 1;
while(--y)
x *= x;
return x;
}
static void
tile(void) {
Bool mmaxtile = False, smaxtile = False; /* fallback tiling */
double mscale = 0, sscale = 0, sum = 0;
unsigned int i, n, nx, ny, nw, nh, mw, tw;
Client *c;
/* preparation */
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for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
n++;
nx = wax;
ny = way;
mw = (n <= nmaster) ? waw : waw / (1 + hratio);
tw = waw - mw;
if(n > 0) {
if(n <= nmaster) {
for(i = 0; i < n; i++)
sum += spow(vratio, i);
mscale = wah / sum;
if(vratio >= 1)
mmaxtile = bh > (mscale * spow(vratio, 0));
else
mmaxtile = bh > (mscale * spow(vratio, n - 1));
}
else {
for(i = 0; i < nmaster; i++)
sum += spow(vratio, i);
mscale = wah / sum;
for(sum = 0, i = 0; i < (n - nmaster); i++)
sum += spow(vratio, i);
sscale = wah / sum;
if(vratio >= 1) {
mmaxtile = bh > (mscale * spow(vratio, 0));
smaxtile = bh > (sscale * spow(vratio, 0));
}
else {
mmaxtile = bh > (mscale * spow(vratio, nmaster - 1));
smaxtile = bh > (sscale * spow(vratio, n - nmaster - 1));
}
}
}
/* tiling */
for(i = 0, c = clients; c; c = c->next)
if(isvisible(c)) {
unban(c);
if(c->isfloating)
continue;
c->ismax = False;
if(i < nmaster) { /* master window */
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nw = mw - 2 * c->border;
if(mmaxtile) {
ny = way;
nh = wah - 2 * c->border;
}
else if(i + 1 == (n < nmaster ? n : nmaster))
nh = (way + wah) - ny - 2 * c->border;
else
nh = (mscale * spow(vratio, i)) - 2 * c->border;
}
else { /* tile window */
nw = tw - 2 * c->border;
if(i == nmaster) {
ny = way;
nx = wax + mw;
}
if(smaxtile) {
ny = way;
nh = wah - 2 * c->border;
}
else if(i + 1 == n)
nh = (way + wah) - ny - 2 * c->border;
else
nh = (sscale * spow(vratio, i - nmaster)) - 2 * c->border;
}
resize(c, nx, ny, nw, nh, False);
ny += nh;
i++;
}
else
ban(c);
focus(NULL);
restack();
}
LAYOUTS
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static void
incratio(const char *arg, double *ratio, double def) {
double delta;
if(lt->arrange != tile)
return;
if(!arg)
*ratio = def;
else {
if(1 == sscanf(arg, "%lf", &delta)) {
if(delta + (*ratio) < .1 || delta + (*ratio) > 1.9)
return;
*ratio += delta;
}
}
lt->arrange();
}
/* extern */
void
floating(void) {
Client *c;
for(c = clients; c; c = c->next)
if(isvisible(c)) {
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unban(c);
resize(c, c->x, c->y, c->w, c->h, True);
}
else
ban(c);
focus(NULL);
restack();
}
void
focusclient(const char *arg) {
Client *c;
if(!sel || !arg)
return;
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if(atoi(arg) < 0) {
for(c = sel->prev; c && !isvisible(c); c = c->prev);
if(!c) {
for(c = clients; c && c->next; c = c->next);
for(; c && !isvisible(c); c = c->prev);
}
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}
else {
for(c = sel->next; c && !isvisible(c); c = c->next);
if(!c)
for(c = clients; c && !isvisible(c); c = c->next);
}
if(c) {
focus(c);
restack();
}
}
void
inchratio(const char *arg) {
incratio(arg, &hratio, HRATIO);
}
void
incvratio(const char *arg) {
incratio(arg, &vratio, VRATIO);
}
void
incnmaster(const char *arg) {
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int i;
if(!arg)
nmaster = NMASTER;
else {
i = atoi(arg);
if((lt->arrange != tile) || (nmaster + i < 1)
|| (wah / (nmaster + i) <= 2 * BORDERPX))
return;
nmaster += i;
}
if(sel)
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lt->arrange();
else
drawstatus();
}
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void
initlayouts(void) {
unsigned int i, w;
lt = &layout[0];
nlayouts = sizeof layout / sizeof layout[0];
for(blw = i = 0; i < nlayouts; i++) {
w = textw(layout[i].symbol);
if(w > blw)
blw = w;
}
}
Client *
nexttiled(Client *c) {
for(; c && (c->isfloating || !isvisible(c)); c = c->next);
return c;
}
void
restack(void) {
Client *c;
XEvent ev;
XWindowChanges wc;
drawstatus();
if(!sel)
return;
if(sel->isfloating || lt->arrange == floating)
XRaiseWindow(dpy, sel->win);
if(lt->arrange != floating) {
wc.stack_mode = Below;
wc.sibling = barwin;
if(!sel->isfloating) {
XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
wc.sibling = sel->win;
}
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for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
if(c == sel)
continue;
XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
wc.sibling = c->win;
}
}
XSync(dpy, False);
while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
}
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void
setlayout(const char *arg) {
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int i;
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if(!arg) {
lt++;
if(lt == layout + nlayouts)
lt = layout;
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}
else {
i = atoi(arg);
if(i < 0 || i >= nlayouts)
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return;
lt = &layout[i];
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}
if(sel)
lt->arrange();
else
drawstatus();
}
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void
togglebar(const char *arg) {
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if(bpos == BarOff)
bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
else
bpos = BarOff;
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updatebarpos();
lt->arrange();
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}
void
togglemax(const char *arg) {
XEvent ev;
if(!sel || (lt->arrange != floating && !sel->isfloating) || sel->isfixed)
return;
if((sel->ismax = !sel->ismax)) {
sel->rx = sel->x;
sel->ry = sel->y;
sel->rw = sel->w;
sel->rh = sel->h;
resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
}
else
resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
drawstatus();
while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
}
void
zoom(const char *arg) {
Client *c;
if(!sel || lt->arrange == floating || sel->isfloating)
return;
if((c = sel) == nexttiled(clients))
if(!(c = nexttiled(c->next)))
return;
detach(c);
attach(c);
focus(c);
lt->arrange();
}