Tk*
tkfindfocus(TkTop *t, int x, int y, int descend)
{
Point p, q;
Tk *tk, *f;
TkWin *tkw;
p.x = x;
p.y = y;
for(f = t->windows; f != nil; f = TKobj(TkWin, f)->next) {
assert(f->flag&Tkwindow);
if(f->flag & Tkmapped) {
tkw = TKobj(TkWin, f);
q.x = p.x - (tkw->act.x+f->borderwidth);
q.y = p.y - (tkw->act.y+f->borderwidth);
tk = tkinwindow(f, q, descend);
if(tk != nil)
return tk;
}
}
return nil;
}
static Tk*
tktdeliver(Tk *tk, TkTitem *i, TkTitem *tagit, int event, void *data, Point deltasv)
{
Tk *ftk, *dest;
TkTwind *w;
TkText *tkt;
TkTtaginfo *t;
TkTline *l;
TkMouse m;
Point mp, p;
TkTindex ix;
int bd;
dest = nil;
if(i != nil) {
tkt = TKobj(TkText, tk);
if(i->kind == TkTwin) {
w = i->iwin;
if(w->sub != nil) {
if(!(event & TkKey) && (event & TkEmouse)) {
m = *(TkMouse*)data;
mp.x = m.x;
mp.y = m.y;
ix.item = i;
ix.pos = 0;
ix.line = tktitemline(i);
p = tktitempos(tk, &ix);
bd = w->sub->borderwidth;
mp.x = m.x - (deltasv.x + p.x + w->sub->act.x + bd);
mp.y = m.y - (deltasv.y + p.y + w->sub->act.y + bd);
ftk = tkinwindow(w->sub, mp, 0);
if(ftk != w->focus) {
tkdeliver(w->focus, TkLeave, data);
tkdeliver(ftk, TkEnter, data);
w->focus = ftk;
}
if(ftk != nil)
dest = tkdeliver(ftk, event, &m);
}
else {
if ((event & TkLeave) && (w->focus != w->sub)) {
tkdeliver(w->focus, TkLeave, data);
w->focus = nil;
event &= ~TkLeave;
}
if (event)
tkdeliver(w->sub, event, data);
}
if(Dx(w->sub->dirty) > 0) {
l = tktitemline(i);
tktfixgeom(tk, tktprevwrapline(tk, l), l, 0);
}
if(event & TkKey)
return dest;
}
}
if(tagit != 0) {
for(t = tkt->tags; t != nil; t = t->next) {
if(t->binds != nil && tkttagset(tagit, t->id)) {
if(tksubdeliver(tk, t->binds, event, data, 0) == TkDbreak) {
return dest;
}
}
}
}
}
return dest;
}