dwm/patch/tab.c
2021-03-09 13:23:39 +01:00

132 lines
3.0 KiB
C

static int th = 0; /* tab bar geometry */
void
drawtabs(void)
{
Monitor *m;
for (m = mons; m; m = m->next)
drawtab(m);
}
static int
cmpint(const void *p1, const void *p2)
{
/* The actual arguments to this function are "pointers to
pointers to char", but strcmp(3) arguments are "pointers
to char", hence the following cast plus dereference */
return *((int*) p1) > * (int*) p2;
}
void
drawtab(Monitor *m)
{
Client *c;
int i;
int itag = -1;
char view_info[50];
int view_info_w = 0;
int sorted_label_widths[MAXTABS];
int tot_width;
int maxsize = bh;
int x = 0;
int w = 0;
// view_info: indicate the tag which is displayed in the view
for (i = 0; i < NUMTAGS; ++i) {
if ((selmon->tagset[selmon->seltags] >> i) & 1) {
if (itag >=0) { // more than one tag selected
itag = -1;
break;
}
itag = i;
}
}
if (0 <= itag && itag < NUMTAGS) {
snprintf(view_info, sizeof view_info, "[%s]", tagicon(m, itag));
} else {
strncpy(view_info, "[...]", sizeof view_info);
}
view_info[sizeof(view_info) - 1 ] = 0;
view_info_w = TEXTW(view_info);
tot_width = view_info_w;
/* Calculates number of labels and their width */
m->ntabs = 0;
for (c = m->clients; c; c = c->next) {
if (!ISVISIBLE(c) || HIDDEN(c))
continue;
m->tab_widths[m->ntabs] = TEXTW(c->name);
tot_width += m->tab_widths[m->ntabs];
++m->ntabs;
if (m->ntabs >= MAXTABS)
break;
}
if (tot_width > m->ww) { // not enough space to display the labels, they need to be truncated
memcpy(sorted_label_widths, m->tab_widths, sizeof(int) * m->ntabs);
qsort(sorted_label_widths, m->ntabs, sizeof(int), cmpint);
tot_width = view_info_w;
for (i = 0; i < m->ntabs; ++i) {
if (tot_width + (m->ntabs - i) * sorted_label_widths[i] > m->ww)
break;
tot_width += sorted_label_widths[i];
}
maxsize = (m->ww - tot_width) / (m->ntabs - i);
} else {
maxsize = m->ww;
}
i = 0;
for (c = m->clients; c; c = c->next) {
if (!ISVISIBLE(c) || HIDDEN(c))
continue;
if (i >= m->ntabs)
break;
if (m->tab_widths[i] > maxsize)
m->tab_widths[i] = maxsize;
w = m->tab_widths[i];
drw_setscheme(drw, scheme[(c == m->sel) ? SchemeSel : SchemeNorm]);
drw_text(drw, x, 0, w, th, 0, c->name, 0, False);
x += w;
++i;
}
drw_setscheme(drw, scheme[SchemeNorm]);
/* cleans interspace between window names and current viewed tag label */
w = m->ww - view_info_w - x;
drw_text(drw, x, 0, w, th, 0, "", 0, False);
/* view info */
x += w;
w = view_info_w;
drw_text(drw, x, 0, w, th, 0, view_info, 0, False);
drw_map(drw, m->tabwin, 0, 0, m->ww, th);
}
void
focuswin(const Arg* arg)
{
int iwin = arg->i;
Client* c = NULL;
for (c = selmon->clients; c && (iwin || !ISVISIBLE(c)) ; c = c->next) {
if (ISVISIBLE(c) && !HIDDEN(c))
--iwin;
};
if (c) {
focus(c);
restack(selmon);
}
}
void
tabmode(const Arg *arg)
{
if (arg && arg->i >= 0)
selmon->showtab = arg->ui % showtab_nmodes;
else
selmon->showtab = (selmon->showtab + 1 ) % showtab_nmodes;
arrange(selmon);
}