diff options
author | Robin Gareus <robin@gareus.org> | 2015-05-03 00:58:54 +0200 |
---|---|---|
committer | Robin Gareus <robin@gareus.org> | 2015-05-03 01:00:44 +0200 |
commit | 62a2d6a0647cd636f8711acceccc22142bb899aa (patch) | |
tree | 0559f4259ef24aff071d40f473e63a3550ca9065 /gtk2_ardour/ardour_dropdown.cc | |
parent | 198c4d1d8899296da19daff08de2395d13494fc1 (diff) |
implement scroll wheel support for ardour-dropdown
Diffstat (limited to 'gtk2_ardour/ardour_dropdown.cc')
-rw-r--r-- | gtk2_ardour/ardour_dropdown.cc | 63 |
1 files changed, 61 insertions, 2 deletions
diff --git a/gtk2_ardour/ardour_dropdown.cc b/gtk2_ardour/ardour_dropdown.cc index cd1bfefed3..84c54489ec 100644 --- a/gtk2_ardour/ardour_dropdown.cc +++ b/gtk2_ardour/ardour_dropdown.cc @@ -63,9 +63,68 @@ ArdourDropdown::~ArdourDropdown () } bool -ArdourDropdown::on_button_press_event (GdkEventButton*) +ArdourDropdown::on_button_press_event (GdkEventButton* ev) { - _menu.popup (1, gtk_get_current_event_time()); + if (ev->type == GDK_BUTTON_PRESS) { + _menu.popup (1, gtk_get_current_event_time()); + } + return true; +} + +bool +ArdourDropdown::on_scroll_event (GdkEventScroll* ev) +{ + using namespace Menu_Helpers; + + const MenuItem * current_active = _menu.get_active(); + const MenuList& items = _menu.items (); + int c = 0; + + if (!current_active) { + return true; + } + + /* work around another gtkmm API clusterfuck + * const MenuItem* get_active () const + * void set_active (guint index) + * + * also MenuList.activate_item does not actually + * set it as active in the menu. + * + */ + + switch (ev->direction) { + case GDK_SCROLL_UP: + + for (MenuList::const_reverse_iterator i = items.rbegin(); i != items.rend(); ++i, ++c) { + if ( &(*i) != current_active) { + continue; + } + if (++i != items.rend()) { + c = items.size() - 2 - c; + assert(c >= 0); + _menu.set_active(c); + _menu.activate_item(*i); + } + break; + } + break; + case GDK_SCROLL_DOWN: + for (MenuList::const_iterator i = items.begin(); i != items.end(); ++i, ++c) { + if ( &(*i) != current_active) { + continue; + } + if (++i != items.end()) { + assert(c + 1 < items.size()); + _menu.set_active(c + 1); + _menu.activate_item(*i); + } + break; + } + break; + default: + break; + } return true; } |