static void
tkentrysee(Tk *tk, int index, int jump)
{
TkEntry *tke = TKobj(TkEntry, tk);
int dx, margin;
Rectangle r;
r = tkentrybbox(tk, index);
dx = tk->act.width - 2*xinset(tk);
if (jump)
margin = dx / 4;
else
margin = 0;
if (r.min.x <= tke->x0 || r.max.x > tke->x0 + dx) {
if (r.min.x <= tke->x0) {
tke->x0 = r.min.x - margin;
if (tke->x0 < 0)
tke->x0 = 0;
} else if (r.max.x >= tke->x0 + dx) {
tke->x0 = r.max.x - dx + margin;
if (tke->x0 > tke->xlen - dx)
tke->x0 = tke->xlen - dx;
}
tk->dirty = tkrect(tk, 0);
}
r = rectaddpt(r, Pt(xinset(tk) - tke->x0, yinset(tk)));
tksee(tk, r, r.min);
}
char*
tkseecmd(TkTop *t, char *arg, char **ret)
{
TkOptab tko[2];
TkSee opts;
TkName *names;
Tk *tk;
char *e;
Rectangle vr;
Point vp;
opts.r[0] = bbnil.min.x;
opts.r[1] = bbnil.min.y;
opts.r[2] = bbnil.max.x;
opts.r[3] = bbnil.max.y;
opts.p[0] = bbnil.max.x;
opts.p[1] = bbnil.max.y;
opts.query = 0;
tko[0].ptr = &opts;
tko[0].optab = seeopts;
tko[1].ptr = nil;
names = nil;
e = tkparse(t, arg, tko, &names);
if (e != nil)
return e;
if (names == nil)
return TkBadwp;
tk = tklook(t, names->name, 0);
tkfreename(names);
if (tk == nil)
return TkBadwp;
if (opts.query) {
if (!tkvisiblerect(tk, &vr))
return nil;
/* XXX should this be converted into screen coords? */
return tkvalue(ret, "%d %d %d %d", vr.min.x, vr.min.y, vr.max.x, vr.max.y);
}
vr.min.x = opts.r[0];
vr.min.y = opts.r[1];
vr.max.x = opts.r[2];
vr.max.y = opts.r[3];
vp.x = opts.p[0];
vp.y = opts.p[1];
if (eqrect(vr, bbnil))
vr = tkrect(tk, 1);
if (eqpt(vp, bbnil.max))
vp = vr.min;
tksee(tk, vr, vp);
return nil;
}