Julien "_FrnchFrgg_" RIVAUD
6a985df81e
Because all uses of the function positioning menus anchored to a widget were as callback argument to Gtk::Menu::popup() where the caller needed to correctly bind arguments, this led to repeated and a bit obscure code. Wrap the logic into an helper function that takes care of all that, and update the callers.
161 lines
3.5 KiB
C++
161 lines
3.5 KiB
C++
/*
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Copyright (C) 2014 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <iostream>
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#include <cmath>
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#include <algorithm>
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#include <pangomm/layout.h>
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "pbd/stacktrace.h"
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#include "gtkmm2ext/utils.h"
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#include "gtkmm2ext/rgb_macros.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "ardour/rc_configuration.h" // for widget prelight preference
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#include "ardour_dropdown.h"
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#include "pbd/i18n.h"
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#define REFLECTION_HEIGHT 2
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using namespace Gdk;
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using namespace Gtk;
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using namespace Glib;
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using namespace PBD;
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using namespace std;
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ArdourDropdown::ArdourDropdown (Element e)
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: _scrolling_disabled(false)
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{
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// signal_button_press_event().connect (sigc::mem_fun(*this, &ArdourDropdown::on_mouse_pressed));
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_menu.signal_size_request().connect (sigc::mem_fun(*this, &ArdourDropdown::menu_size_request));
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_menu.set_reserve_toggle_size(false);
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add_elements(e);
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add_elements(ArdourButton::Menu);
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}
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ArdourDropdown::~ArdourDropdown ()
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{
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}
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void
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ArdourDropdown::menu_size_request(Requisition *req) {
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req->width = max(req->width, get_allocation().get_width());
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}
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bool
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ArdourDropdown::on_button_press_event (GdkEventButton* ev)
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{
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if (ev->type == GDK_BUTTON_PRESS) {
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Gtkmm2ext::anchored_menu_popup(&_menu, this, get_text(), 1, ev->time);
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}
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return true;
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}
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bool
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ArdourDropdown::on_scroll_event (GdkEventScroll* ev)
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{
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using namespace Menu_Helpers;
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if (_scrolling_disabled) {
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return false;
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}
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const MenuItem * current_active = _menu.get_active();
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const MenuList& items = _menu.items ();
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int c = 0;
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if (!current_active) {
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return true;
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}
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/* work around another gtkmm API clusterfuck
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* const MenuItem* get_active () const
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* void set_active (guint index)
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*
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* also MenuList.activate_item does not actually
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* set it as active in the menu.
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*
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*/
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switch (ev->direction) {
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case GDK_SCROLL_UP:
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for (MenuList::const_reverse_iterator i = items.rbegin(); i != items.rend(); ++i, ++c) {
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if ( &(*i) != current_active) {
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continue;
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}
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if (++i != items.rend()) {
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c = items.size() - 2 - c;
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assert(c >= 0);
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_menu.set_active(c);
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_menu.activate_item(*i);
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}
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break;
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}
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break;
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case GDK_SCROLL_DOWN:
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for (MenuList::const_iterator i = items.begin(); i != items.end(); ++i, ++c) {
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if ( &(*i) != current_active) {
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continue;
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}
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if (++i != items.end()) {
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assert(c + 1 < (int) items.size());
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_menu.set_active(c + 1);
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_menu.activate_item(*i);
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}
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break;
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}
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break;
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default:
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break;
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}
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return true;
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}
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void
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ArdourDropdown::clear_items ()
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{
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_menu.items ().clear ();
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}
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void
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ArdourDropdown::AddMenuElem (Menu_Helpers::Element e)
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{
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using namespace Menu_Helpers;
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MenuList& items = _menu.items ();
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items.push_back (e);
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}
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void
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ArdourDropdown::disable_scrolling()
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{
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_scrolling_disabled = true;
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}
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