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9term: home/end like acme

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R=rsc
http://codereview.appspot.com/4830052
This commit is contained in:
Russ Cox 2011-08-02 07:55:20 -04:00
parent 76864eb6cd
commit 65a5e5fe46
2 changed files with 19 additions and 2 deletions
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1
src/cmd/9term/dat.h
View file

@ -117,6 +117,7 @@ struct Window
uint q0;
uint q1;
uint qh;
uint iq1; /* last input position */
int id;
char name[32];
uint namecount;

20
src/cmd/9term/wind.c
View file

@ -623,10 +623,18 @@ wkeyctl(Window *w, Rune r)
}
return;
case Khome:
wshow(w, 0);
if(w->org > w->iq1) {
q0 = wbacknl(w, w->iq1, 1);
wsetorigin(w, q0, TRUE);
} else
wshow(w, 0);
return;
case Kend:
wshow(w, w->nr);
if(w->iq1 > w->org+w->f.nchars) {
q0 = wbacknl(w, w->iq1, 1);
wsetorigin(w, q0, TRUE);
} else
wshow(w, w->nr);
return;
case 0x01: /* ^A: beginning of line */
if(w->q0==0 || w->q0==w->qh || w->r[w->q0-1]=='\n')
@ -689,6 +697,7 @@ wkeyctl(Window *w, Rune r)
w->qh = w->nr;
wshow(w, w->qh);
winterrupt(w);
w->iq1 = w->q0;
return;
case 0x06: /* ^F: file name completion */
case Kins: /* Insert: file name completion */
@ -699,6 +708,7 @@ wkeyctl(Window *w, Rune r)
q0 = w->q0;
q0 = winsert(w, rp, nr, q0);
wshow(w, q0+nr);
w->iq1 = w->q0;
free(rp);
return;
case 0x08: /* ^H: erase character */
@ -717,12 +727,14 @@ wkeyctl(Window *w, Rune r)
wdelete(w, q0, q0+nb);
wsetselect(w, q0, q0);
}
w->iq1 = w->q0;
return;
}
/* otherwise ordinary character; just insert */
q0 = w->q0;
q0 = winsert(w, &r, 1, q0);
wshow(w, q0+1);
w->iq1 = w->q0;
}
void
@ -921,6 +933,8 @@ wdelete(Window *w, uint q0, uint q1)
return;
runemove(w->r+q0, w->r+q1, w->nr-q1);
w->nr -= n;
if(q0 < w->iq1)
w->iq1 -= min(n, w->iq1-q0);
if(q0 < w->q0)
w->q0 -= min(n, w->q0-q0);
if(q0 < w->q1)
@ -1609,6 +1623,8 @@ winsert(Window *w, Rune *r, int n, uint q0)
w->qh += n;
if(q0 < w->org)
w->org += n;
if(q0 < w->iq1)
w->iq1 += n;
else if(q0 <= w->org+w->f.nchars)
frinsert(&w->f, r, r+n, q0-w->org);
return q0;