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rio: fix scrolling when cursor is above window

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This commit is contained in:
BurnZeZ 2015-10-24 22:57:07 -04:00
parent 847f3a0cf5
commit 8f27b8d04d
1 changed files with 7 additions and 4 deletions
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11
sys/src/cmd/rio/scrl.c
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@ -153,10 +153,13 @@ wscroll(Window *w, int but)
readmouse(&w->mc);
continue;
}
if(but == 1 || but == 4)
p0 = wbacknl(w, w->org, (my-s.min.y)/w->font->height);
else
p0 = w->org+frcharofpt(w, Pt(s.max.x, my));
if(but == 1 || but == 4){
y = max(1, (my-s.min.y)/w->font->height);
p0 = wbacknl(w, w->org, y);
}else{
y = max(my, s.min.y+w->font->height);
p0 = w->org+frcharofpt(w, Pt(s.max.x, y));
}
if(oldp0 != p0)
wsetorigin(w, p0, TRUE);
oldp0 = p0;