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fixes for the listbox bugs described in issue #472

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ErrorFlynn 2019-08-05 14:11:02 -04:00 committed by GitHub
parent d845a82dc4
commit 1b0ac10475
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 2 deletions
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13
source/gui/widgets/listbox.cpp
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@ -2300,7 +2300,8 @@ namespace nana
size_type count_of_exposed(bool with_rest) const
{
auto lister_s = this->content_view->view_area().height;
return (lister_s / item_height()) + (with_rest && (lister_s % item_height()) ? 1 : 0);
return (lister_s / item_height()) + (with_rest &&
listbox_ptr->scroll_operation()->visible(true) && (lister_s % item_height()) ? 1 : 0);
}
void update(bool ignore_auto_draw = false) noexcept
@ -6062,7 +6063,15 @@ namespace nana
auto listbox::last_visible() const -> index_pair
{
return _m_ess().lister.advance(_m_ess().first_display(), static_cast<int>(_m_ess().count_of_exposed(true)));
if(!const_cast<listbox*>(this)->scroll_operation()->visible(true))
{
auto last_cat = size_categ()-1;
index_pair ip(last_cat, at(last_cat).size()-1);
if(last_cat == 0 && ip.item == npos) // if the listbox is empty
ip.cat = npos; // return empty index_pair
return ip;
}
return _m_ess().lister.advance(_m_ess().first_display(), static_cast<int>(_m_ess().count_of_exposed(true)-1));
}
auto listbox::visibles() const -> index_pairs