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Add MetaButton Widget

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A Button that changes functionality.

* right click: show a drop-down to pick what left click will do
* left click: activate selected action
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Robin Gareus 2025-01-28 06:04:42 +01:00
parent d280c46d44
commit ff2c33e42e
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libs/widgets/widgets/metabutton.h Normal file
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/*
* Copyright (C) 2025 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <gtkmm/menu.h>
#include <gtkmm/menuitem.h>
#include "widgets/ardour_button.h"
#include "widgets/visibility.h"
namespace ArdourWidgets {
class LIBWIDGETS_API MetaButton : public ArdourButton
{
public:
MetaButton ();
virtual ~MetaButton ();
void add_item (std::string const& label, std::string const& menutext, sigc::slot<void> const&);
void clear_items ();
void set_active (std::string const&);
void set_index (guint);
guint index () const
{
return _active;
}
protected:
bool on_button_press_event (GdkEventButton*);
void menu_size_request (Gtk::Requisition*);
private:
class MetaMenuItem : public Gtk::MenuItem
{
public:
MetaMenuItem (std::string const& label, std::string const& menutext, sigc::slot<void> const& cb)
: Gtk::MenuItem (menutext, false)
, _label (label)
, _cb (cb)
{
}
void activate () const
{
_cb ();
}
std::string label () const
{
return _label;
}
std::string menutext () const
{
return get_label ();
}
private:
std::string _label;
sigc::slot<void> _cb;
};
class MetaElement : public Gtk::Menu_Helpers::MenuElem
{
public:
typedef sigc::slot<void, MetaMenuItem const*> SlotActivate;
MetaElement (std::string const& label, std::string const& menutext, sigc::slot<void> const& cb, SlotActivate const& wrap)
: Gtk::Menu_Helpers::MenuElem ("")
{
MetaMenuItem* mmi = manage (new MetaMenuItem (label, menutext, cb));
child_->unreference ();
set_child (mmi);
child_->signal_activate ().connect (sigc::bind (wrap, mmi));
child_->show ();
}
};
void activate_item (MetaMenuItem const*);
Gtk::Menu _menu;
guint _active;
};
} // namespace ArdourWidgets