bool ScrollBar::Set(int apagepos) {
int op = pagepos;
pagepos = apagepos;
if(pagepos > totalsize - pagesize) pagepos = totalsize - pagesize;
if(pagepos < 0) pagepos = 0;
int slsize = GetRange();
int mint = max(minthumb, style->thumbmin);
if(totalsize <= 0)
SetThumb(0, slsize);
else {
double thumbsize = slsize * pagesize / (double) totalsize;
double rest = slsize * pagesize - thumbsize * totalsize;
double ts, ps;
if(thumbsize >= slsize || thumbsize < 0) {
ts = slsize;
ps = 0;
}
else
if(thumbsize <= mint) {
ps = ((slsize - mint) * (double)pagepos + rest) / (double) (totalsize - pagesize);
ts = mint;
}
else {
ps = (slsize * (double)pagepos + rest) / (double) totalsize;
ts = thumbsize;
}
SetThumb(ffloor(ps), fceil(ts));
}
if(pagepos != op) {
Refresh();
WhenScroll();
return true;
}
return false;
}
void ScrollBar::Position() {
int slsize = GetRange();
int mint = max(minthumb, style->thumbmin);
if(slsize < mint || totalsize <= pagesize)
pagepos = 0;
else
if(thumbpos == slsize - thumbsize)
pagepos = totalsize - pagesize;
else
if(thumbsize == mint)
pagepos = iscale(thumbpos, (totalsize - pagesize), (slsize - mint));
else
pagepos = iscale(thumbpos, totalsize, slsize);
Action();
WhenScroll();
}
void HeaderCtrl::Scroll()
{
Refresh();
WhenScroll();
}
void ScrollBars::Scroll() {
WhenScroll();
}
