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sowm: swap to circular doubly linked list

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Dylan Araps 2019-10-19 00:16:19 +03:00
parent 0fa485eb7b
commit 7fe47aefc1
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1 changed files with 21 additions and 34 deletions
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sowm.c
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@ -66,7 +66,7 @@ static void (*events[LASTEvent])(XEvent *e) = {
#include "config.h" #include "config.h"
#define win (client *c=list;c;c=c->next) #define win (client *t=0, *c=list; c && t!=list->prev; t=c, c=c->next)
#define win_focus(W) XSetInputFocus(d, W, RevertToParent, CurrentTime) #define win_focus(W) XSetInputFocus(d, W, RevertToParent, CurrentTime)
#define ws_save(W) ws_list[W] = list #define ws_save(W) ws_list[W] = list
#define ws_sel(W) list = ws_list[ws = W] #define ws_sel(W) list = ws_list[ws = W]
@ -130,53 +130,40 @@ void button_release() {
} }
void win_add(Window w) { void win_add(Window w) {
client *c, *t; client *c;
if (!(c = (client *)calloc(1, sizeof(client)))) if (!(c = (client *) calloc(1, sizeof(client))))
exit(1); exit(1);
if (!list) { c->w = w;
c->next = c->prev = 0;
c->w = w; if (list) {
list = c; list->prev->next = c;
c->prev = list->prev;
list->prev = c;
c->next = list;
} else { } else {
for (t=list;t->next;t=t->next); list = c;
list->prev = list->next = list;
c->next = 0;
c->prev = t;
c->w = w;
t->next = c;
} }
ws_save(ws); ws_save(ws);
} }
void win_del(Window w) { void win_del(Window w) {
for win if (c->w == w) { client *x = 0;
if (!c->prev && !c->next) {
free(list);
list = 0;
ws_save(ws);
return;
}
if (!c->prev) { for win if (c->w == w) x = c;
list = c->next;
c->next->prev = 0;
} else if (!c->next) { if (!list || !x) return;
c->prev->next = 0; if (x->prev == x) list = 0;
if (list == x) list = x->next;
if (x->next) x->next->prev = x->prev;
if (x->prev) x->prev->next = x->next;
} else { free(x);
c->prev->next = c->next; ws_save(ws);
c->next->prev = c->prev;
}
free(c);
ws_save(ws);
return;
}
} }
void win_kill() { void win_kill() {