dwm/view.c

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/*
* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include "dwm.h"
/* static */
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static Client *
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minclient(void) {
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Client *c, *min;
if((clients && clients->isfloat) || arrange == dofloat)
return clients; /* don't touch floating order */
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for(min = c = clients; c; c = c->next)
if(c->weight < min->weight)
min = c;
return min;
}
static Client *
nexttiled(Client *c) {
for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
return c;
}
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static void
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reorder(void) {
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Client *c, *newclients, *tail;
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newclients = tail = NULL;
while((c = minclient())) {
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detach(c);
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if(tail) {
c->prev = tail;
tail->next = c;
tail = c;
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}
else
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tail = newclients = c;
}
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clients = newclients;
}
static void
togglemax(Client *c)
{
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XEvent ev;
if((c->ismax = !c->ismax)) {
c->rx = c->x; c->x = sx;
c->ry = c->y; c->y = bh;
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c->rw = c->w; c->w = sw - 2 * BORDERPX;
c->rh = c->h; c->h = sh - bh - 2 * BORDERPX;
}
else {
c->x = c->rx;
c->y = c->ry;
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c->w = c->rw;
c->h = c->rh;
}
resize(c, True, TopLeft);
while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
}
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/* extern */
void (*arrange)(Arg *) = DEFMODE;
StackPos stackpos = STACKPOS;
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void
detach(Client *c) {
if(c->prev)
c->prev->next = c->next;
if(c->next)
c->next->prev = c->prev;
if(c == clients)
clients = c->next;
c->next = c->prev = NULL;
}
void
dofloat(Arg *arg) {
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Client *c;
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for(c = clients; c; c = c->next) {
if(isvisible(c)) {
resize(c, True, TopLeft);
}
else
ban(c);
}
if(!sel || !isvisible(sel)) {
for(c = stack; c && !isvisible(c); c = c->snext);
focus(c);
}
restack();
}
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/* This algorithm is based on a (M)aster area and a (S)tacking area.
* It supports following arrangements:
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* SSMMM MMMMM MMMSS
* SSMMM SSSSS MMMSS
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*/
void
dotile(Arg *arg) {
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int i, n, stackw, stackh, tw, th;
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Client *c;
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for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
n++;
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if(stackpos == StackBottom) {
stackw = sw;
stackh = sh - bh - master;
}
else {
stackw = sw - master;
stackh = sh - bh;
}
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tw = stackw;
if(n > 1)
th = stackh / (n - 1);
else
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th = stackh;
for(i = 0, c = clients; c; c = c->next) {
if(isvisible(c)) {
if(c->isfloat) {
resize(c, True, TopLeft);
continue;
}
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c->ismax = False;
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if(n == 1) { /* only 1 window */
c->x = sx;
c->y = sy + bh;
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c->w = sw - 2 * BORDERPX;
c->h = sh - 2 * BORDERPX - bh;
}
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else if(i == 0) { /* master window */
switch(stackpos) {
case StackLeft:
c->x = sx + stackw;
c->y = sy + bh;
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c->w = master - 2 * BORDERPX;
c->h = sh - bh - 2 * BORDERPX;
break;
case StackBottom:
c->x = sx;
c->y = sy + bh;
c->w = sw - 2 * BORDERPX;
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c->h = master - 2 * BORDERPX;
break;
case StackRight:
c->x = sx;
c->y = sy + bh;
c->w = master - 2 * BORDERPX;
c->h = sh - bh - 2 * BORDERPX;
break;
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}
}
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else if(th > bh) {
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/* tile window */
c->w = tw - 2 * BORDERPX;
c->h = th - 2 * BORDERPX;
switch(stackpos) {
case StackLeft:
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c->x = sx;
c->y = sy + (i - 1) * th + bh;
if(i + 1 == n)
c->h = sh - c->y - 2 * BORDERPX;
break;
case StackBottom:
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c->x = sx;
c->y = sy + master + (i - 1) * th + bh;
if(i + 1 == n)
c->h = sh - c->y - 2 * BORDERPX;
break;
case StackRight:
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c->x = sx + master;
c->y = sy + (i - 1) * th + bh;
if(i + 1 == n)
c->h = sh - c->y - 2 * BORDERPX;
break;
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}
}
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else { /* fallback if th < bh */
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c->w = stackw - 2 * BORDERPX;
c->h = stackh - 2 * BORDERPX;
switch(stackpos) {
case StackLeft:
c->x = sx;
c->y = sy + bh;
break;
case StackBottom:
c->x = sx;
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c->y = sy + master + bh;
break;
case StackRight:
c->x = sx + master;
c->y = sy + bh;
break;
}
}
resize(c, False, TopLeft);
i++;
}
else
ban(c);
}
if(!sel || !isvisible(sel)) {
for(c = stack; c && !isvisible(c); c = c->snext);
focus(c);
}
restack();
}
void
focusnext(Arg *arg) {
Client *c;
if(!sel)
return;
if(!(c = getnext(sel->next)))
c = getnext(clients);
if(c) {
focus(c);
restack();
}
}
void
focusprev(Arg *arg) {
Client *c;
if(!sel)
return;
if(!(c = getprev(sel->prev))) {
for(c = clients; c && c->next; c = c->next);
c = getprev(c);
}
if(c) {
focus(c);
restack();
}
}
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Bool
isvisible(Client *c) {
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unsigned int i;
for(i = 0; i < ntags; i++)
if(c->tags[i] && seltag[i])
return True;
return False;
}
void
resizecol(Arg *arg) {
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int s;
unsigned int n;
Client *c;
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for(n = 0, c = clients; c; c = c->next)
if(isvisible(c) && !c->isfloat)
n++;
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if(!sel || sel->isfloat || n < 2 || (arrange == dofloat))
return;
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s = stackpos == StackBottom ? sh - bh : sw;
if(sel == getnext(clients)) {
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if(master + arg->i > s - MINW || master + arg->i < MINW)
return;
master += arg->i;
}
else {
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if(master - arg->i > s - MINW || master - arg->i < MINW)
return;
master -= arg->i;
}
arrange(NULL);
}
void
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restack(void) {
Client *c;
XEvent ev;
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if(!sel) {
drawstatus();
return;
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}
if(sel->isfloat || arrange == dofloat) {
XRaiseWindow(dpy, sel->win);
XRaiseWindow(dpy, sel->twin);
}
if(arrange != dofloat) {
if(!sel->isfloat) {
XLowerWindow(dpy, sel->twin);
XLowerWindow(dpy, sel->win);
}
for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
if(c == sel)
continue;
XLowerWindow(dpy, c->twin);
XLowerWindow(dpy, c->win);
}
}
drawall();
XSync(dpy, False);
while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
}
void
togglemode(Arg *arg) {
arrange = (arrange == dofloat) ? dotile : dofloat;
if(sel)
arrange(NULL);
else
drawstatus();
}
void
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 */
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reorder();
arrange(NULL);
}
void
togglestackpos(Arg *arg) {
if(arrange == dofloat)
return;
if(stackpos == StackBottom)
stackpos = STACKPOS;
else
stackpos = StackBottom;
master = ((stackpos == StackBottom ? sh - bh : sw) * MASTER) / 100;
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arrange(NULL);
}
void
view(Arg *arg) {
unsigned int i;
for(i = 0; i < ntags; i++)
seltag[i] = False;
seltag[arg->i] = True;
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reorder();
arrange(NULL);
}
void
viewall(Arg *arg) {
unsigned int i;
for(i = 0; i < ntags; i++)
seltag[i] = True;
reorder();
arrange(NULL);
}
void
zoom(Arg *arg) {
unsigned int n;
Client *c;
if(!sel)
return;
if(sel->isfloat || (arrange == dofloat)) {
togglemax(sel);
return;
}
for(n = 0, c = clients; c; c = c->next)
if(isvisible(c) && !c->isfloat)
n++;
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if(n < 2 || (arrange == dofloat))
return;
if((c = sel) == nexttiled(clients))
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if(!(c = nexttiled(c->next)))
return;
detach(c);
if(clients)
clients->prev = c;
c->next = clients;
clients = c;
focus(c);
arrange(NULL);
}