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livetrax/gtk2_ardour/luainstance.h

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/*
* Copyright (C) 2016-2018 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 __gtkardour_luainstance_h__
#define __gtkardour_luainstance_h__
#include <bitset>
#include <cairo.h>
#include "pbd/id.h"
#include "pbd/signals.h"
#include "pbd/xml++.h"
#include "ardour/luascripting.h"
#include "ardour/lua_script_params.h"
#include "ardour/luabindings.h"
#include "ardour/session_handle.h"
#include "lua/luastate.h"
#include "luasignal.h"
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namespace luabridge {
class LuaRef;
}
typedef std::bitset<LuaSignal::LAST_SIGNAL> ActionHook;
class LuaCallback : public ARDOUR::SessionHandlePtr, public sigc::trackable
{
public:
LuaCallback (ARDOUR::Session*, const std::string&, const std::string&, const ActionHook&, const ARDOUR::LuaScriptParamList&);
LuaCallback (ARDOUR::Session*, XMLNode & node);
~LuaCallback ();
XMLNode& get_state (void);
void set_session (ARDOUR::Session *);
const PBD::ID& id () const { return _id; }
const std::string& name () const { return _name; }
ActionHook signals () const { return _signals; }
bool lua_slot (std::string&, std::string&, ActionHook&, ARDOUR::LuaScriptParamList&);
PBD::Signal0<void> drop_callback;
protected:
void session_going_away ();
private:
LuaState lua;
PBD::ID _id;
std::string _name;
ActionHook _signals;
void reconnect ();
template <class T> void reconnect_object (T);
void init ();
luabridge::LuaRef * _lua_add;
luabridge::LuaRef * _lua_get;
luabridge::LuaRef * _lua_call;
luabridge::LuaRef * _lua_save;
luabridge::LuaRef * _lua_load;
PBD::ScopedConnectionList _connections;
template <typename T, typename S> void connect_0 (enum LuaSignal::LuaSignal, T, S*);
template <typename T> void proxy_0 (enum LuaSignal::LuaSignal, T);
template <typename T, typename C1> void connect_1 (enum LuaSignal::LuaSignal, T, PBD::Signal1<void, C1>*);
template <typename T, typename C1> void proxy_1 (enum LuaSignal::LuaSignal, T, C1);
template <typename T, typename C1, typename C2> void connect_2 (enum LuaSignal::LuaSignal, T, PBD::Signal2<void, C1, C2>*);
template <typename T, typename C1, typename C2> void proxy_2 (enum LuaSignal::LuaSignal, T, C1, C2);
template <typename T, typename C1, typename C2, typename C3> void connect_3 (enum LuaSignal::LuaSignal, T, PBD::Signal3<void, C1, C2, C3>*);
template <typename T, typename C1, typename C2, typename C3> void proxy_3 (enum LuaSignal::LuaSignal, T, C1, C2, C3);
};
typedef boost::shared_ptr<LuaCallback> LuaCallbackPtr;
typedef std::map<PBD::ID, LuaCallbackPtr> LuaCallbackMap;
class LuaInstance : public PBD::ScopedConnectionList, public ARDOUR::SessionHandlePtr
{
public:
static LuaInstance* instance();
static void destroy_instance();
~LuaInstance();
static void register_classes (lua_State* L);
static void register_hooks (lua_State* L);
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static void bind_cairo (lua_State* L);
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static void bind_dialog (lua_State* L);
static void render_action_icon (cairo_t* cr, int w, int h, uint32_t c, void* i);
void set_session (ARDOUR::Session* s);
int set_state (const XMLNode&);
XMLNode& get_action_state (void);
XMLNode& get_hook_state (void);
int load_state ();
int save_state ();
bool interactive_add (ARDOUR::LuaScriptInfo::ScriptType, int);
/* actions */
void call_action (const int);
void render_icon (int i, cairo_t*, int, int, uint32_t);
bool set_lua_action (const int, const std::string&, const std::string&, const ARDOUR::LuaScriptParamList&);
bool remove_lua_action (const int);
bool lua_action_name (const int, std::string&);
std::vector<std::string> lua_action_names ();
bool lua_action (const int, std::string&, std::string&, ARDOUR::LuaScriptParamList&);
bool lua_action_has_icon (const int);
sigc::signal<void,int,std::string> ActionChanged;
/* callbacks */
bool register_lua_slot (const std::string&, const std::string&, const ARDOUR::LuaScriptParamList&);
bool unregister_lua_slot (const PBD::ID&);
std::vector<PBD::ID> lua_slots () const;
bool lua_slot_name (const PBD::ID&, std::string&) const;
std::vector<std::string> lua_slot_names () const;
bool lua_slot (const PBD::ID&, std::string&, std::string&, ActionHook&, ARDOUR::LuaScriptParamList&);
sigc::signal<void,PBD::ID,std::string,ActionHook> SlotChanged;
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static PBD::Signal0<void> LuaTimerS; // deci-seconds (Timer every 1s)
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static PBD::Signal0<void> LuaTimerDS; // deci-seconds (Timer every .1s)
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static PBD::Signal0<void> SetSession; // emitted when a session is loaded
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private:
LuaInstance();
static LuaInstance* _instance;
void init ();
void set_dirty ();
void session_going_away ();
LuaState lua;
luabridge::LuaRef * _lua_call_action;
luabridge::LuaRef * _lua_render_icon;
luabridge::LuaRef * _lua_add_action;
luabridge::LuaRef * _lua_del_action;
luabridge::LuaRef * _lua_get_action;
luabridge::LuaRef * _lua_load;
luabridge::LuaRef * _lua_save;
luabridge::LuaRef * _lua_clear;
LuaCallbackMap _callbacks;
PBD::ScopedConnectionList _slotcon;
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void every_second ();
sigc::connection second_connection;
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void every_point_one_seconds ();
sigc::connection point_one_second_connection;
};
#endif