bindings.h

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/*
 * Copyright (C) 2010-2019 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2017 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.
 */
 
#ifndef __libgtkmm2ext_bindings_h__
#define __libgtkmm2ext_bindings_h__
 
#include <map>
#include <vector>
#include <list>
 
#include <stdint.h>
 
#include <gdk/gdkkeysyms.h>
#include <gtkmm/action.h>
#include <gtkmm/radioaction.h>
#include <gtkmm/toggleaction.h>
 
#include "pbd/signals.h"
 
#include "gtkmm2ext/visibility.h"
 
class XMLNode;
class XMLProperty;
 
namespace Gtkmm2ext {
 
class LIBGTKMM2EXT_API KeyboardKey
{
  public:
        KeyboardKey () {
                _val = GDK_VoidSymbol;
        }
 
        KeyboardKey (uint32_t state, uint32_t keycode);
 
        static KeyboardKey null_key() { return KeyboardKey (0, 0); }
 
        uint32_t state() const { return _val >> 32; }
        uint32_t key() const { return _val & 0xffffffff; }
 
        bool operator<(const KeyboardKey& other) const {
                return _val < other._val;
        }
 
        bool operator==(const KeyboardKey& other) const {
                return _val == other._val;
        }
 
        std::string name() const;
        std::string native_name() const;
        std::string native_short_name() const;
        static bool make_key (const std::string&, KeyboardKey&);
 
        std::string display_label() const;
 
  private:
        uint64_t _val;
};
 
class LIBGTKMM2EXT_API MouseButton {
  public:
        MouseButton () {
                _val = ~0ULL;
        }
 
        MouseButton (uint32_t state, uint32_t button_number);
        uint32_t state() const { return _val >> 32; }
        uint32_t button() const { return _val & 0xffff; }
 
        bool operator<(const MouseButton& other) const {
                return _val < other._val;
        }
 
        bool operator==(const MouseButton& other) const {
                return _val == other._val;
        }
 
        std::string name() const;
        static bool make_button (const std::string&, MouseButton&);
 
  private:
        uint64_t _val;
};
 
class LIBGTKMM2EXT_API Bindings;
 
class LIBGTKMM2EXT_API Bindings {
  public:
        enum Operation {
                Press,
                Release
        };
 
        struct ActionInfo {
                ActionInfo (std::string const& name) : action_name (name) {}
                ActionInfo (std::string const& name, std::string const& grp) : action_name (name), group_name (grp) {}
 
                std::string action_name;
                std::string group_name; /* may be empty */
                mutable Glib::RefPtr<Gtk::Action> action;
        };
        typedef std::map<KeyboardKey,ActionInfo> KeybindingMap;
 
        Bindings (std::string const& name);
        ~Bindings ();
 
        std::string const& name() const { return _name; }
 
        void reassociate ();
        void associate ();
        void dissociate ();
 
        bool empty() const;
        bool empty_keys () const;
        bool empty_mouse () const;
 
        bool add (KeyboardKey, Operation, std::string const&, XMLProperty const*, bool can_save = false);
        bool replace (KeyboardKey, Operation, std::string const& action_name, bool can_save = true);
        bool remove (Operation, std::string const& action_name, bool can_save = false);
 
        bool activate (KeyboardKey, Operation);
 
        void add (MouseButton, Operation, std::string const&, XMLProperty const*);
        void remove (MouseButton, Operation);
        bool activate (MouseButton, Operation);
 
        bool is_bound (KeyboardKey const&, Operation, std::string* path = 0) const;
        std::string bound_name (KeyboardKey const&, Operation) const;
        bool is_registered (Operation op, std::string const& action_name) const;
 
        KeyboardKey get_binding_for_action (Glib::RefPtr<Gtk::Action>, Operation& op);
 
        bool load (XMLNode const& node);
        void load_operation (XMLNode const& node);
        void save (XMLNode& root);
        void save_as_html (std::ostream&, bool) const;
 
        /* used for editing bindings */
        void get_all_actions (std::vector<std::string>& paths,
                              std::vector<std::string>& labels,
                              std::vector<std::string>& tooltips,
                              std::vector<std::string>& keys,
                              std::vector<Glib::RefPtr<Gtk::Action> >& actions);
 
        /* all bindings currently in existence, as grouped into Bindings */
        static void reset_bindings () { bindings.clear (); }
        static std::list<Bindings*> bindings;
        static Bindings* get_bindings (std::string const & name);
        static void associate_all ();
        static void save_all_bindings_as_html (std::ostream&);
 
        static PBD::Signal<void(Bindings*)> BindingsChanged;
 
        struct DragsBlockBindings {
                DragsBlockBindings() { Bindings::_drag_active++; }
                ~DragsBlockBindings() {
                        if (Bindings::_drag_active) {
                                Bindings::_drag_active--;
                        }
                }
        };
 
  private:
        std::string  _name;
        KeybindingMap press_bindings;
        KeybindingMap release_bindings;
 
        typedef std::map<MouseButton,ActionInfo> MouseButtonBindingMap;
        MouseButtonBindingMap button_press_bindings;
        MouseButtonBindingMap button_release_bindings;
 
        void push_to_gtk (KeyboardKey, Glib::RefPtr<Gtk::Action>);
 
        KeybindingMap& get_keymap (Operation op);
        const KeybindingMap& get_keymap (Operation op) const;
        MouseButtonBindingMap& get_mousemap (Operation op);
 
        /* GTK has the following position a Gtk::Action:
         *
         *  accel_path: <Actions>/GroupName/ActionName
         *  name: ActionName
         *
         * We want proper namespacing and we're not interested in
         * the silly <Actions> "extra" namespace. So in Ardour:
         *
         * accel_path: <Actions>/GroupName/ActionName
         * name: GroupName/ActionName
         *
         * This (static) method returns the "ardour" name for the action.
         */
        static std::string ardour_action_name (Glib::RefPtr<Gtk::Action>);
 
        static int _drag_active;
        friend struct DragsBlockBindings;
};
 
} // namespace
 
std::ostream& operator<<(std::ostream& out, Gtkmm2ext::KeyboardKey const & k);
 
#endif /* __libgtkmm2ext_bindings_h__ */