diff options
Diffstat (limited to 'libs/gtkmm2ext/grouped_buttons.cc')
-rw-r--r-- | libs/gtkmm2ext/grouped_buttons.cc | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/libs/gtkmm2ext/grouped_buttons.cc b/libs/gtkmm2ext/grouped_buttons.cc new file mode 100644 index 0000000000..b16b983d02 --- /dev/null +++ b/libs/gtkmm2ext/grouped_buttons.cc @@ -0,0 +1,96 @@ +/* + Copyright (C) 2001 Paul Davis + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ +*/ + +#include <gtkmm.h> + +#include <gtkmm2ext/grouped_buttons.h> + +using namespace std; + +GroupedButtons::GroupedButtons (vector<Gtk::ToggleButton *>& buttonset) +{ + uint32_t n = 0; + + buttons = buttonset; + + for (vector<Gtk::ToggleButton *>::iterator i = buttons.begin(); i != buttons.end(); ++i, ++n) { + if ((*i)->get_active()) { + current_active = n; + } + (*i)->signal_clicked().connect (sigc::bind (mem_fun (*this, &GroupedButtons::one_clicked), n)); + } +} + +GroupedButtons::GroupedButtons (uint32_t nbuttons, uint32_t first_active) +{ + buttons.reserve (nbuttons); + current_active = first_active; + + for (uint32_t n = 0; n < nbuttons; ++n) { + + Gtk::ToggleButton *button; + + button = manage (new (Gtk::ToggleButton)); + + if (n == current_active) { + button->set_active (true); + } + + button->signal_clicked().connect (sigc::bind (mem_fun (*this, &GroupedButtons::one_clicked), n)); + buttons.push_back (button); + } +} + +static gint +reactivate_button (void *arg) +{ + Gtk::ToggleButton *b = (Gtk::ToggleButton *) arg; + b->set_active (true); + return FALSE; +} + +void +GroupedButtons::one_clicked (uint32_t which) +{ + if (buttons[which]->get_active()) { + + if (which != current_active) { + uint32_t old = current_active; + current_active = which; + buttons[old]->set_active (false); + } + + } else if (which == current_active) { + + /* Someobody tried to unset the current active + button by clicking on it. This caused + set_active (false) to be called. We don't + allow that, so just reactivate it. + + Don't try this right here, because of some + design glitches with GTK+ toggle buttons. + Setting the button back to active from + within the signal emission that marked + it as inactive causes a segfault ... + */ + + gtk_idle_add (reactivate_button, buttons[which]); + } +} |