livetrax/gtk2_ardour/ardour_ui.h

/*
    Copyright (C) 1999-2002 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.

*/

#ifndef __ardour_gui_h__
#define __ardour_gui_h__

#include <time.h>

/* need _BSD_SOURCE to get timersub macros */

#ifdef _BSD_SOURCE
#include <sys/time.h>
#else
#define _BSD_SOURCE
#include <sys/time.h>
#undef _BSD_SOURCE
#endif

#include <list>
#include <cmath>


#include "pbd/xml++.h"
#include <gtkmm/box.h>
#include <gtkmm/frame.h>
#include <gtkmm/label.h>
#include <gtkmm/table.h>
#include <gtkmm/fixed.h>
#include <gtkmm/drawingarea.h>
#include <gtkmm/eventbox.h>
#include <gtkmm/menu.h>
#include <gtkmm/menuitem.h>
#include <gtkmm/messagedialog.h>
#include <gtkmm/notebook.h>
#include <gtkmm/button.h>
#include <gtkmm/togglebutton.h>
#include <gtkmm/treeview.h>
#include <gtkmm/menubar.h>
#include <gtkmm/textbuffer.h>
#include <gtkmm/adjustment.h>

#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/bindings.h"
#include "gtkmm2ext/visibility_tracker.h"

#include "ardour/ardour.h"
#include "ardour/types.h"
#include "ardour/utils.h"
#include "ardour/plugin.h"
#include "ardour/session_handle.h"
#include "ardour/system_exec.h"

#include "video_timeline.h"

#include "widgets/ardour_button.h"
#include "widgets/ardour_spacer.h"

#include "add_route_dialog.h"
#include "ardour_dialog.h"
#include "ardour_window.h"
#include "editing.h"
#include "enums.h"
#include "mini_timeline.h"
#include "shuttle_control.h"
#include "transport_control.h"
#include "transport_control_ui.h"
#include "visibility_group.h"
#include "window_manager.h"

#ifdef COMPILER_MSVC
#include "about.h"
#include "add_video_dialog.h"
#include "big_clock_window.h"
#include "big_transport_window.h"
#include "bundle_manager.h"
#include "engine_dialog.h"
#include "export_video_dialog.h"
#include "global_port_matrix.h"
#include "idleometer.h"
#include "keyeditor.h"
#include "location_ui.h"
#include "lua_script_manager.h"
#include "plugin_dspload_window.h"
#include "rc_option_editor.h"
#include "route_dialogs.h"
#include "route_params_ui.h"
#include "session_option_editor.h"
#include "speaker_dialog.h"
#include "transport_masters_dialog.h"
#else
class About;
class AddRouteDialog;
class AddVideoDialog;
class BigClockWindow;
class BigTransportWindow;
class BundleManager;
class EngineControl;
class ExportVideoDialog;
class KeyEditor;
class LocationUIWindow;
class LuaScriptManager;
class RCOptionEditor;
class RouteParams_UI;
class SessionOptionEditor;
class SpeakerDialog;
class GlobalPortMatrixWindow;
class IdleOMeter;
class PluginDSPLoadWindow;
class TransportMastersWindow;
#endif

class VideoTimeLine;
class ArdourKeyboard;
class AudioClock;
class ConnectionEditor;
class DuplicateRouteDialog;
class MainClock;
class Mixer_UI;
class PublicEditor;
class SaveAsDialog;
class SaveTemplateDialog;
class SessionDialog;
class SessionOptionEditorWindow;
class Splash;
class TimeInfoBox;
class Meterbridge;
class LuaWindow;
class MidiTracer;
class NSM_Client;
class LevelMeterHBox;
class GUIObjectState;

namespace ARDOUR {
	class ControlProtocolInfo;
	class IO;
	class Port;
	class Route;
	class RouteGroup;
	class Location;
	class ProcessThread;
}

namespace Gtk {
	class ProgressBar;
}

namespace ArdourWidgets {
	class Prompter;
	class Tabbable;
}

#define MAX_LUA_ACTION_SCRIPTS 12

class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr, public TransportControlProvider
{
public:
	ARDOUR_UI (int *argcp, char **argvp[], const char* localedir);
	~ARDOUR_UI();

	bool run_startup (bool should_be_new, std::string load_template);

	void show_splash ();
	void hide_splash ();

	void launch_chat ();
	void launch_manual ();
	void launch_reference ();
	void launch_tracker ();
	void launch_subscribe ();
	void launch_cheat_sheet ();
	void launch_website ();
	void launch_website_dev ();
	void launch_forums ();
	void launch_howto_report ();
	void show_about ();
	void hide_about ();

	void load_from_application_api (const std::string& path);
	void finish();

	int load_session (const std::string& path, const std::string& snapshot, std::string mix_template = std::string());
	bool session_load_in_progress;
	int build_session (const std::string& path, const std::string& snapshot, ARDOUR::BusProfile*);
	bool session_is_new() const { return _session_is_new; }

	ARDOUR::Session* the_session() { return _session; }

	bool get_smart_mode () const;

	RCOptionEditor* get_rc_option_editor() { return rc_option_editor; }
	void show_tabbable (ArdourWidgets::Tabbable*);

	int get_session_parameters (bool quit_on_cancel, bool should_be_new = false, std::string load_template = "");
	int  build_session_from_dialog (SessionDialog&, const std::string& session_name, const std::string& session_path);
	bool ask_about_loading_existing_session (const std::string& session_path);

	/// @return true if session was successfully unloaded.
	int unload_session (bool hide_stuff = false);
	void close_session();

	int  save_state_canfail (std::string state_name = "", bool switch_to_it = false);
	void save_state (const std::string & state_name = "", bool switch_to_it = false);

	static ARDOUR_UI *instance () { return theArdourUI; }

	/* signal emitted when escape key is pressed. All UI components that
	   need to respond to Escape in some way (e.g. break drag, clear
	   selection, etc) should connect to and handle this.
	*/
	PBD::Signal0<void> Escape;

	PublicEditor&	  the_editor() { return *editor;}
	Mixer_UI* the_mixer() { return mixer; }

	Gtk::Menu* shared_popup_menu ();

	void new_midi_tracer_window ();
	void toggle_editing_space();
	void toggle_mixer_space();
	void toggle_keep_tearoffs();

	void reset_focus (Gtk::Widget*);

	static PublicEditor* _instance;

	/** Emitted frequently with the audible sample, false, and the edit point as
	 *  parameters respectively.
	 *
	 *  (either RapidScreenUpdate || SuperRapidScreenUpdate - user-config)
	 */
	static sigc::signal<void, samplepos_t> Clock;

	static void close_all_dialogs () { CloseAllDialogs(); }
	static sigc::signal<void> CloseAllDialogs;

	XMLNode* main_window_settings() const;
	XMLNode* editor_settings() const;
	XMLNode* preferences_settings() const;
	XMLNode* mixer_settings () const;
	XMLNode* keyboard_settings () const;
	XMLNode* tearoff_settings (const char*) const;

	void save_ardour_state ();
	gboolean configure_handler (GdkEventConfigure* conf);

	void halt_on_xrun_message ();
	void xrun_handler (samplepos_t);
	void create_xrun_marker (samplepos_t);

	GUIObjectState* gui_object_state;

	MainClock* primary_clock;
	MainClock* secondary_clock;
	void focus_on_clock ();
	AudioClock*   big_clock;

	VideoTimeLine *video_timeline;

	void store_clock_modes ();
	void restore_clock_modes ();
	void reset_main_clocks ();

	void synchronize_sync_source_and_video_pullup ();

	void add_route ();
	void add_route_dialog_response (int);

	void add_routes_part_two ();
	void add_routes_thread ();

	void start_duplicate_routes ();

	void add_video (Gtk::Window* float_window);
	void remove_video ();
	void start_video_server_menu (Gtk::Window* float_window);
	bool start_video_server (Gtk::Window* float_window, bool popup_msg);
	void stop_video_server (bool ask_confirm=false);
	void flush_videotimeline_cache (bool localcacheonly=false);
	void export_video (bool range = false);

	void session_add_audio_route (bool, int32_t, int32_t, ARDOUR::TrackMode, ARDOUR::RouteGroup *,
	                              uint32_t, std::string const &, bool, ARDOUR::PresentationInfo::order_t order);

	void session_add_mixed_track (const ARDOUR::ChanCount&, const ARDOUR::ChanCount&, ARDOUR::RouteGroup*,
	                              uint32_t, std::string const &, bool strict_io,
	                              ARDOUR::PluginInfoPtr, ARDOUR::Plugin::PresetRecord* pset,
	                              ARDOUR::PresentationInfo::order_t order);

	void session_add_midi_bus (ARDOUR::RouteGroup*, uint32_t, std::string const &, bool strict_io,
	                           ARDOUR::PluginInfoPtr, ARDOUR::Plugin::PresetRecord* pset,
	                           ARDOUR::PresentationInfo::order_t order);

	void session_add_midi_route (bool, ARDOUR::RouteGroup *, uint32_t, std::string const &, bool,
	                             ARDOUR::PluginInfoPtr, ARDOUR::Plugin::PresetRecord*,
	                             ARDOUR::PresentationInfo::order_t order);

	void session_add_foldback_bus (uint32_t, std::string const &);

	void display_insufficient_ports_message ();

	void attach_to_engine ();
	void post_engine ();

	gint exit_on_main_window_close (GdkEventAny *);

	void maximise_editing_space ();
	void restore_editing_space ();

	void show_ui_prefs ();

	bool check_audioengine(Gtk::Window&);

	void setup_profile ();
	void setup_tooltips ();

	void set_shuttle_fract (double);

	void get_process_buffers ();
	void drop_process_buffers ();

	void reset_peak_display ();
	void reset_route_peak_display (ARDOUR::Route*);
	void reset_group_peak_display (ARDOUR::RouteGroup*);

	const std::string& announce_string() const { return _announce_string; }

	void hide_application ();

	Gtk::Notebook& tabs();
	Gtk::Window& main_window () { return _main_window; }

	void setup_toplevel_window (Gtk::Window&, const std::string& name, void* owner);

	/* called from a static C function */

	GtkNotebook* tab_window_root_drop (GtkNotebook* src,
	                                   GtkWidget* w,
	                                   gint x,
	                                   gint y,
	                                   gpointer user_data);

	bool tabbed_window_state_event_handler (GdkEventWindowState*, void* object);
	bool key_event_handler (GdkEventKey*, Gtk::Window* window);

	ARDOUR::PresentationInfo::order_t translate_order (RouteDialogs::InsertAt);

	std::map<std::string, std::string> route_setup_info (const std::string& script_path);

protected:
	friend class PublicEditor;

	void toggle_use_monitor_section ();
	void monitor_dim_all ();
	void monitor_cut_all ();
	void monitor_mono ();

	void toggle_auto_play ();
	void toggle_auto_input ();
	void toggle_punch ();
	void unset_dual_punch ();
	bool ignore_dual_punch;
	void toggle_punch_in ();
	void toggle_punch_out ();
	void toggle_session_monitoring_in ();
	void toggle_session_monitoring_disk ();
	void show_loop_punch_ruler_and_disallow_hide ();
	void reenable_hide_loop_punch_ruler_if_appropriate ();
	void toggle_auto_return ();
	void toggle_click ();
	void toggle_audio_midi_setup ();
	void toggle_session_auto_loop ();
	void toggle_rc_options_window ();
	void toggle_session_options_window ();

private:

	Gtk::Window   _main_window;
	Gtkmm2ext::VisibilityTracker* main_window_visibility;
	Gtk::VBox      main_vpacker;
	Gtk::HBox      status_bar_hpacker;
	Gtk::Notebook _tabs;
	PublicEditor*  editor;
	Mixer_UI*      mixer;
	Gtk::Tooltips _tooltips;
	NSM_Client*    nsm;
	bool          _was_dirty;
	bool          _mixer_on_top;
	bool          _initial_verbose_plugin_scan;

	Gtk::Menu*    _shared_popup_menu;

	void hide_tabbable (ArdourWidgets::Tabbable*);
	void detach_tabbable (ArdourWidgets::Tabbable*);
	void attach_tabbable (ArdourWidgets::Tabbable*);
	void button_change_tabbable_visibility (ArdourWidgets::Tabbable*);
	void key_change_tabbable_visibility (ArdourWidgets::Tabbable*);
	void toggle_editor_and_mixer ();

	void tabbable_state_change (ArdourWidgets::Tabbable&);

	void toggle_meterbridge ();
	void toggle_luawindow ();

	int  setup_windows ();
	void setup_transport ();
	void setup_clock ();

	static ARDOUR_UI *theArdourUI;
	SessionDialog *_session_dialog;

	int starting ();

	int  ask_about_saving_session (const std::vector<std::string>& actions);

	void save_session_at_its_request (std::string);
	/* periodic safety backup, to be precise */
	gint autosave_session();
	void update_autosave();
	sigc::connection _autosave_connection;

	void session_dirty_changed ();
	void update_title ();

	void map_transport_state ();
	int32_t do_engine_start ();

	void engine_halted (const char* reason, bool free_reason);
	void engine_stopped ();
	void engine_running (uint32_t cnt);

	void use_config ();

	void about_signal_response(int response);

	Gtk::VBox    top_packer;

	sigc::connection clock_signal_connection;
	void         update_clocks ();
	void         start_clocking ();
	void         stop_clocking ();

	void update_transport_clocks (samplepos_t pos);
	void record_state_changed ();

	std::list<MidiTracer*> _midi_tracer_windows;

	/* Transport Control */

	Gtk::Table               transport_table;
	Gtk::Frame               transport_frame;
	Gtk::HBox                transport_hbox;

	ArdourWidgets::ArdourVSpacer* secondary_clock_spacer;
	void repack_transport_hbox ();
	void update_clock_visibility ();
	void toggle_follow_edits ();

	void set_transport_controllable_state (const XMLNode&);
	XMLNode& get_transport_controllable_state ();

	TransportControlUI transport_ctrl;

	ArdourWidgets::ArdourButton punch_in_button;
	ArdourWidgets::ArdourButton punch_out_button;
	ArdourWidgets::ArdourButton layered_button;

	ArdourWidgets::ArdourVSpacer recpunch_spacer;
	ArdourWidgets::ArdourVSpacer monitoring_spacer;

	ArdourWidgets::ArdourButton monitor_in_button;
	ArdourWidgets::ArdourButton monitor_disk_button;
	ArdourWidgets::ArdourButton auto_input_button;

	Gtk::Label   punch_label;
	Gtk::Label   layered_label;

	Gtk::Label   punch_space;
	Gtk::Label   mon_space;

	void toggle_external_sync ();
	void toggle_time_master ();
	void toggle_video_sync ();

	ShuttleControl     shuttle_box;
	MiniTimeline       mini_timeline;
	TimeInfoBox*       time_info_box;


	ArdourWidgets::ArdourVSpacer      meterbox_spacer;
	ArdourWidgets::ArdourVSpacer      meterbox_spacer2;

	ArdourWidgets::ArdourButton auto_return_button;
	ArdourWidgets::ArdourButton follow_edits_button;
	ArdourWidgets::ArdourButton sync_button;

	ArdourWidgets::ArdourButton auditioning_alert_button;
	ArdourWidgets::ArdourButton solo_alert_button;
	ArdourWidgets::ArdourButton feedback_alert_button;
	ArdourWidgets::ArdourButton error_alert_button;

	ArdourWidgets::ArdourButton action_script_call_btn[MAX_LUA_ACTION_SCRIPTS];
	Gtk::Table action_script_table;

	Gtk::VBox alert_box;
	Gtk::Table editor_meter_table;
	ArdourWidgets::ArdourButton editor_meter_peak_display;
	LevelMeterHBox *            editor_meter;
	float                       editor_meter_max_peak;
	bool                        editor_meter_peak_button_release (GdkEventButton*);

	void blink_handler (bool);
	sigc::connection blink_connection;

	void cancel_solo ();
	void solo_blink (bool);
	void sync_blink (bool);
	void audition_blink (bool);
	void feedback_blink (bool);
	void error_blink (bool);

	void set_flat_buttons();

	void soloing_changed (bool);
	void auditioning_changed (bool);
	void _auditioning_changed (bool);

	bool solo_alert_press (GdkEventButton* ev);
	void audition_alert_clicked ();
	bool error_alert_press (GdkEventButton *);

	void layered_button_clicked ();

	void big_clock_value_changed ();
	void primary_clock_value_changed ();
	void secondary_clock_value_changed ();

	/* called by Blink signal */

	void transport_rec_enable_blink (bool onoff);

	/* menu bar and associated stuff */

	Gtk::MenuBar* menu_bar;
	Gtk::EventBox menu_bar_base;
	Gtk::HBox     menu_hbox;

	void use_menubar_as_top_menubar ();
	void build_menu_bar ();

	Gtk::Label   wall_clock_label;
	gint update_wall_clock ();

	Gtk::Label  disk_space_label;
	void update_disk_space ();
	void format_disk_space_label (float);

	Gtk::Label   timecode_format_label;
	void update_timecode_format ();

	Gtk::Label  dsp_load_label;
	void update_cpu_load ();

	Gtk::Label   peak_thread_work_label;
	void update_peak_thread_work ();

	Gtk::Label   sample_rate_label;
	void update_sample_rate (ARDOUR::samplecnt_t);

	Gtk::Label    format_label;
	void update_format ();

	void every_second ();
	void every_point_one_seconds ();
	void every_point_zero_something_seconds ();

	sigc::connection second_connection;
	sigc::connection point_one_second_connection;
	sigc::connection point_zero_something_second_connection;
	sigc::connection fps_connection;

	void set_fps_timeout_connection ();

	void open_session ();
	void open_recent_session ();
	void save_template_dialog_response (int response, SaveTemplateDialog* d);
	void save_template ();
	void manage_templates ();

	void meta_session_setup (const std::string& script_path);
	void meta_route_setup (const std::string& script_path);

	void edit_metadata ();
	void import_metadata ();

	void set_transport_sensitivity (bool);

	//stuff for ProTools-style numpad
	void transport_numpad_event (int num);
	void transport_numpad_decimal ();
	bool _numpad_locate_happening;
	int _pending_locate_num;
	gint transport_numpad_timeout ();
	sigc::connection _numpad_timeout_connection;

	void transport_goto_nth_marker (int nth);
	void transport_goto_zero ();
	void transport_goto_start ();
	void transport_goto_end ();
	void transport_goto_wallclock ();
	void transport_stop ();
	void transport_record (bool roll);
	void transport_roll ();
	void transport_play_selection();
	void transport_play_preroll();
	void transport_rec_preroll();
	void transport_rec_count_in();
	void transport_forward (int option);
	void transport_rewind (int option);
	void transport_loop ();
	void toggle_roll (bool with_abort, bool roll_out_of_bounded_mode);
	bool trx_record_enable_all_tracks ();

	bool _session_is_new;
	void set_session (ARDOUR::Session *);
	void connect_dependents_to_session (ARDOUR::Session *);
	void we_have_dependents ();

	void setup_session_options ();

	guint32  last_key_press_time;

	bool process_snapshot_session_prompter (ArdourWidgets::Prompter& prompter, bool switch_to_it);
	void snapshot_session (bool switch_to_it);

	void quick_snapshot_session (bool switch_to_it);  //does not promtp for name, just makes a timestamped file

	SaveAsDialog* save_as_dialog;

	bool save_as_progress_update (float fraction, int64_t cnt, int64_t total, Gtk::Label* label, Gtk::ProgressBar* bar);
	void save_session_as ();
	void archive_session ();
	void rename_session ();

	int         create_mixer ();
	int         create_editor ();
	int         create_meterbridge ();
	int         create_luawindow ();
	int         create_masters ();

	Meterbridge  *meterbridge;
	LuaWindow    *luawindow;

	/* Dialogs that can be created via new<T> */

	RCOptionEditor* rc_option_editor;
	Gtk::HBox rc_option_editor_placeholder;

	WM::Proxy<SpeakerDialog> speaker_config_window;
	WM::Proxy<AddRouteDialog> add_route_dialog;
	WM::Proxy<About> about;
	WM::Proxy<LocationUIWindow> location_ui;
	WM::Proxy<RouteParams_UI> route_params;
	WM::Proxy<EngineControl> audio_midi_setup;
	WM::Proxy<ExportVideoDialog> export_video_dialog;
	WM::Proxy<LuaScriptManager> lua_script_window;
	WM::Proxy<IdleOMeter> idleometer;
	WM::Proxy<PluginDSPLoadWindow> plugin_dsp_load_window;
	WM::Proxy<TransportMastersWindow> transport_masters_window;

	/* Windows/Dialogs that require a creator method */

	WM::ProxyWithConstructor<SessionOptionEditor> session_option_editor;
	WM::ProxyWithConstructor<AddVideoDialog> add_video_dialog;
	WM::ProxyWithConstructor<BundleManager> bundle_manager;
	WM::ProxyWithConstructor<BigClockWindow> big_clock_window;
	WM::ProxyWithConstructor<BigTransportWindow> big_transport_window;
	WM::ProxyWithConstructor<GlobalPortMatrixWindow> audio_port_matrix;
	WM::ProxyWithConstructor<GlobalPortMatrixWindow> midi_port_matrix;
	WM::ProxyWithConstructor<KeyEditor> key_editor;

	/* creator methods */

	SessionOptionEditor*    create_session_option_editor ();
	BundleManager*          create_bundle_manager ();
	AddVideoDialog*         create_add_video_dialog ();
	BigClockWindow*         create_big_clock_window();
	BigTransportWindow*     create_big_transport_window();
	GlobalPortMatrixWindow* create_global_port_matrix (ARDOUR::DataType);
	KeyEditor*              create_key_editor ();

	ARDOUR::SystemExec *video_server_process;

	void handle_locations_change (ARDOUR::Location*);

	/* Keyboard Handling */

	ArdourKeyboard* keyboard;

	/* Keymap handling */

	void install_actions ();
	void install_dependent_actions ();

	void toggle_record_enable (uint16_t);

	uint32_t rec_enabled_streams;
	void count_recenabled_streams (ARDOUR::Route&);

	Splash* splash;

	void pop_back_splash (Gtk::Window&);

	/* cleanup */

	Gtk::MenuItem *cleanup_item;

	void display_cleanup_results (ARDOUR::CleanupReport& rep, const gchar* list_title, const bool msg_delete);
	void cleanup ();
	void cleanup_peakfiles ();
	void flush_trash ();

	bool have_configure_timeout;
	ARDOUR::microseconds_t last_configure_time;
	gint configure_timeout ();

	ARDOUR::microseconds_t last_peak_grab;
	ARDOUR::microseconds_t last_shuttle_request;

	bool have_disk_speed_dialog_displayed;
	void disk_speed_dialog_gone (int ignored_response, Gtk::MessageDialog*);
	void disk_overrun_handler ();
	void disk_underrun_handler ();
	void gui_idle_handler ();

	void cancel_plugin_scan ();
	void cancel_plugin_timeout ();
	void plugin_scan_dialog (std::string type, std::string plugin, bool);
	void plugin_scan_timeout (int);

	void session_format_mismatch (std::string, std::string);

	void session_dialog (std::string);
	int pending_state_dialog ();
	int sr_mismatch_dialog (ARDOUR::samplecnt_t, ARDOUR::samplecnt_t);
	void sr_mismatch_message (ARDOUR::samplecnt_t, ARDOUR::samplecnt_t);

	Gtk::MenuItem* jack_disconnect_item;
	Gtk::MenuItem* jack_reconnect_item;
	Gtk::Menu*     jack_bufsize_menu;

	Glib::RefPtr<Gtk::ActionGroup> common_actions;

	void editor_realized ();

	std::vector<std::string> positional_sync_strings;

	void toggle_use_mmc ();
	void toggle_send_mmc ();
	void toggle_send_mtc ();
	void toggle_send_midi_clock ();

	void toggle_use_osc ();

	void parameter_changed (std::string);
	void session_parameter_changed (std::string);

	bool first_idle ();

	void check_memory_locking ();

	void audioengine_setup ();

	void display_message (const char* prefix, gint prefix_len, Glib::RefPtr<Gtk::TextBuffer::Tag>, Glib::RefPtr<Gtk::TextBuffer::Tag>, const char* msg);
	Gtk::Label status_bar_label;
	bool status_bar_button_press (GdkEventButton*);

	void loading_message (const std::string& msg);

	PBD::ScopedConnectionList forever_connections;
	PBD::ScopedConnection halt_connection;
	PBD::ScopedConnection editor_meter_connection;

	/* these are used only in response to a platform-specific "ShouldQuit" signal */
	bool idle_finish ();
	void queue_finish ();
	void fontconfig_dialog ();

	int missing_file (ARDOUR::Session*s, std::string str, ARDOUR::DataType type);
	int ambiguous_file (std::string file, std::vector<std::string> hits);

	bool click_button_clicked (GdkEventButton *);
	bool sync_button_clicked (GdkEventButton *);

	VisibilityGroup _status_bar_visibility;

	/** A ProcessThread so that we have some thread-local buffers for use by
	 *  PluginEqGui::impulse_analysis ().
	 */
	ARDOUR::ProcessThread* _process_thread;

	void feedback_detected ();

	ArdourWidgets::ArdourButton             midi_panic_button;
	void                     midi_panic ();

	void successful_graph_sort ();
	bool _feedback_exists;

	enum ArdourLogLevel {
		LogLevelNone = 0,
		LogLevelInfo,
		LogLevelWarning,
		LogLevelError
	};

	ArdourLogLevel _log_not_acknowledged;

	void resize_text_widgets ();

	bool xrun_button_release (GdkEventButton* ev);

	std::string _announce_string;
	void check_announcements ();

	int do_audio_midi_setup (uint32_t);
	void audioengine_became_silent ();

	DuplicateRouteDialog* duplicate_routes_dialog;

	void grab_focus_after_dialog ();

	void tabs_switch (GtkNotebookPage*, guint page_number);
	void tabs_page_added (Gtk::Widget*, guint);
	void tabs_page_removed (Gtk::Widget*, guint);
	ArdourWidgets::ArdourButton editor_visibility_button;
	ArdourWidgets::ArdourButton mixer_visibility_button;
	ArdourWidgets::ArdourButton prefs_visibility_button;

	bool key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev, Gtkmm2ext::Bindings*);
	bool try_gtk_accel_binding (GtkWindow* win, GdkEventKey* ev, bool translate, GdkModifierType modifier);

	bool main_window_delete_event (GdkEventAny*);
	bool idle_ask_about_quit ();

	bool tabbable_visibility_button_press (GdkEventButton* ev, std::string const& tabbable_name);

	void step_up_through_tabs ();
	void step_down_through_tabs ();

	void escape ();
	void close_current_dialog ();
	void pre_release_dialog ();

	bool bind_lua_action_script (GdkEventButton*, int);
	void update_action_script_btn (int i, const std::string&);
};

#endif /* __ardour_gui_h__ */