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editor.h

/*
    Copyright (C) 2000-2003 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.

    $Id: editor.h,v 1.296 2006/02/14 04:58:39 essej Exp $
*/

#ifndef __ardour_editor_h__
#define __ardour_editor_h__

#include <list>
#include <map>
#include <set>
#include <string>
#include <sys/time.h>

#include <cmath>

#include <sndfile.h>

#include <gtk--.h>
#include <gtk--/layout.h>
#include <gtk-canvas.h>
#include <gtk-canvas/gtk-canvas-util.h>
#include <gtkmmext/selector.h>
#include <gtkmmext/click_box.h>

#include <ardour/stateful.h>
#include <ardour/session.h>
#include <ardour/tempo.h>
#include <ardour/location.h>
#include <ardour/region.h>

#include "keyboard_target.h"
#include "audio_clock.h"
#include "gtk-custom-ruler.h"
#include "ardour_dialog.h"
#include "public_editor.h"
#include "editing.h"
#include "enums.h"
#include "region_selection.h"

namespace Gtkmmext {
      class TearOff;
}

namespace LinuxAudioSystems {
      class AudioEngine;
}

namespace ARDOUR {
      class DiskStream;
      class RouteGroup;
      class Source;
      class Playlist;
      class Region;
      class Location;
      class TempoSection;
      class NamedSelection;
      class Session;
      class AudioFilter;
      class Crossfade;
}

namespace LADSPA {
      class Plugin;
}

class TimeAxisView;
class AudioTimeAxisView;
class AutomationTimeAxisView;
class AudioRegionView;
class CrossfadeView;
class PluginSelector;
class PlaylistSelector;
class Marker;
class GroupedButtons;
class AutomationLine;
class UIExportSpecification;
class ExportDialog;
class Selection;
class TimeSelection;
class TrackSelection;
class AutomationSelection;
class MixerStrip;
class SoundFileSelector;
class StreamView;
class ControlPoint;

/* <CMT Additions> */
class ImageFrameView;
class ImageFrameTimeAxisView;
class ImageFrameTimeAxis;
class MarkerTimeAxis ;
class MarkerView ;
class ImageFrameSocketHandler ;
class TimeAxisViewItem ;
/* </CMT Additions> */


class Editor : public PublicEditor
{
  public:
      Editor (ARDOUR::AudioEngine&);
      ~Editor ();

      void             connect_to_session (ARDOUR::Session *);
      ARDOUR::Session* current_session() const { return session; }

      jack_nframes_t leftmost_position() const { return leftmost_frame; }
      jack_nframes_t current_page_frames() const {
            return (jack_nframes_t) floor (canvas_width * frames_per_unit);
      }

      void set_snap_to (Editing::SnapType);
      void set_snap_mode (Editing::SnapMode);
      void set_snap_threshold (double pixel_distance) {snap_threshold = pixel_distance;}

      void undo (uint32_t n = 1);
      void redo (uint32_t n = 1);

      XMLNode& get_state ();
      int set_state (const XMLNode& );

      void set_mouse_mode (Editing::MouseMode, bool force=true);
      void step_mouse_mode (bool next);
      Editing::MouseMode current_mouse_mode () { return mouse_mode; }

      void add_imageframe_time_axis(std::string track_name, void*) ;
      void add_imageframe_marker_time_axis(std::string track_name, TimeAxisView* marked_track, void*) ;
      void connect_to_image_compositor() ;
      void scroll_timeaxis_to_imageframe_item(const TimeAxisViewItem* item) ;
      TimeAxisView* get_named_time_axis(std::string name) ;
      /* </CMT Additions> */

      /* public access to auditioning */

      bool consider_auditioning (ARDOUR::AudioRegion*);

      /* option editor-access */

      void set_show_waveforms (bool yn);
      bool show_waveforms() const { return _show_waveforms; }

      void set_show_waveforms_recording (bool yn);
      bool show_waveforms_recording() const { return _show_waveforms_recording; }
      
      /* things that need to be public to be used in the main menubar */

      void new_region_from_selection ();
      void separate_region_from_selection ();
      void toggle_playback (bool with_abort);

      /* undo related */

      void set_edit_menu (Gtk::Menu&);

      jack_nframes_t unit_to_frame (double unit) {
            return (jack_nframes_t) rint (unit * frames_per_unit);
      }
      
      double frame_to_unit (jack_nframes_t frame) {
            return rint ((double) frame / (double) frames_per_unit);
      }

      double frame_to_unit (double frame) {
            return rint (frame / frames_per_unit);
      }

      /* NOTE: these functions assume that the "pixel" coordinate is
         the result of using the world->canvas affine transform on a
         world coordinate. These coordinates already take into
         account any scrolling carried out by adjusting the
         xscroll_adjustment.  
      */

      jack_nframes_t pixel_to_frame (double pixel) {
            
            /* pixel can be less than zero when motion events
               are processed. since we've already run the world->canvas
               affine, that means that the location *really* is "off
               to the right" and thus really is "before the start".
            */

            if (pixel >= 0) {
                  return (jack_nframes_t) rint (pixel * frames_per_unit * GTK_CANVAS(track_gtk_canvas)->pixels_per_unit);
            } else {
                  return 0;
            }
      }

      gulong frame_to_pixel (jack_nframes_t frame) {
            return (gulong) rint ((frame / (frames_per_unit *  GTK_CANVAS(track_gtk_canvas)->pixels_per_unit)));
      }

      /* selection */

      Selection& get_selection() const { return *selection; }
      Selection& get_cut_buffer() const { return *cut_buffer; }

      void play_selection ();
      void select_all_in_track (bool add);
      void select_all (bool add);
      void invert_selection_in_track ();
      void invert_selection ();

      /* tempo */

      void set_show_measures (bool yn);
      bool show_measures () const { return _show_measures; }

      /* export */

      /* these initiate export ... */
      
      void export_session();
      void export_selection();

      /* this is what actually does it */
      
      void export_audiofile (ARDOUR::AudioExportSpecification&);

      /* */

      void add_toplevel_controls (Gtk::Container&);

      void      set_zoom_focus (Editing::ZoomFocus);
      Editing::ZoomFocus get_zoom_focus () const { return zoom_focus; }
      gdouble   get_current_zoom () { return frames_per_unit; }

      void temporal_zoom_step (bool coarser);

      /* stuff that AudioTimeAxisView and related classes use */

      PlaylistSelector& playlist_selector() const;
      void route_name_changed (TimeAxisView *);
      gdouble        frames_per_unit;
      jack_nframes_t leftmost_frame;
      void clear_playlist (ARDOUR::Playlist&);

      TrackViewList* get_valid_views (TimeAxisView*, ARDOUR::RouteGroup* grp = 0);

      Width editor_mixer_strip_width;
      void show_editor_mixer (bool yn);
      void set_selected_mixer_strip (TimeAxisView&);
      void unselect_strip_in_display (TimeAxisView& tv);
      void select_strip_in_display (TimeAxisView& tv);

      /* nudge is initiated by transport controls owned by ARDOUR_UI */

      void nudge_forward (bool next);
      void nudge_backward (bool next);

      /* nudge initiated from context menu */

      void nudge_forward_capture_offset ();
      void nudge_backward_capture_offset ();

      /* playhead/screen stuff */
      
      void set_follow_playhead (bool yn);
      void toggle_follow_playhead ();
      bool follow_playhead() const { return _follow_playhead; }

      /* xfades */

      void toggle_xfades_active();
      void toggle_xfade_visibility ();
      void set_xfade_visibility (bool yn);
      bool xfade_visibility() const { return _xfade_visibility; }

      /* redirect shared ops menu. caller must free returned menu */

      Gtk::Menu* redirect_menu ();

      /* floating windows/transient */

      void ensure_float (Gtk::Window&);

      void show_window ();
      
      void scroll_tracks_down_line ();
      void scroll_tracks_up_line ();

      bool new_regionviews_display_gain () { return _new_regionviews_show_envelope; }
      void prepare_for_cleanup ();

      void reposition_x_origin (jack_nframes_t sample);

  protected:
      void map_transport_state ();
      void map_position_change (jack_nframes_t);

      void realize_impl();
      void map__impl();

  private:
      
      ARDOUR::Session     *session;
      ARDOUR::AudioEngine& engine;
      bool                 constructed;

      PlaylistSelector* _playlist_selector;

      enum ItemType {
            RegionItem,
            StreamItem,
            PlayheadCursorItem,
            EditCursorItem,
            MarkerItem,
            MarkerBarItem,
            RangeMarkerBarItem,
            TransportMarkerBarItem,
            SelectionItem,
            GainControlPointItem,
            GainLineItem,
            GainAutomationControlPointItem,
            GainAutomationLineItem,
            PanAutomationControlPointItem,
            PanAutomationLineItem,
            RedirectAutomationControlPointItem,
            RedirectAutomationLineItem,
            MeterMarkerItem,
            TempoMarkerItem,
            MeterBarItem,
            TempoBarItem,
            AudioRegionViewNameHighlight,
            AudioRegionViewName,
            StartSelectionTrimItem,
            EndSelectionTrimItem,
            AutomationTrackItem,
            FadeInItem,
            FadeInHandleItem,
            FadeOutItem,
            FadeOutHandleItem,

            /* <CMT Additions> */
            MarkerViewItem,
            MarkerTimeAxisItem,
            MarkerViewHandleStartItem,
            MarkerViewHandleEndItem,
            ImageFrameItem,
            ImageFrameTimeAxisItem,
            ImageFrameHandleStartItem,
            ImageFrameHandleEndItem,
            /* </CMT Additions> */

            CrossfadeViewItem,
            
            /* don't remove this */

            NoItem
      };

      void          set_frames_per_unit (double);
      void          frames_per_unit_modified ();

      Editing::MouseMode mouse_mode;
      void      mouse_insert (GdkEventButton *);

      void pane_allocation_handler (GtkAllocation*, Gtk::Paned*);

      Gtk::HPaned   canvas_region_list_pane;
      Gtk::HPaned   track_list_canvas_pane;

      Gtk::EventBox meter_base;
      Gtk::HBox     meter_box;
      Gtk::EventBox marker_base;
      Gtk::HBox     marker_box;
      Gtk::VBox     scrollers_rulers_markers_box;

      void location_changed (ARDOUR::Location *);
      void location_flags_changed (ARDOUR::Location *, void *);
      void refresh_location_display ();
      void refresh_location_display_s (ARDOUR::Change);
      void refresh_location_display_internal (ARDOUR::Locations::LocationList&);
      void add_new_location (ARDOUR::Location *);
      void location_gone (ARDOUR::Location *);
      void remove_marker (GtkCanvasItem*, GdkEvent*);
      gint really_remove_marker (ARDOUR::Location* loc);

      uint32_t location_marker_color;
      uint32_t location_range_color;
      uint32_t location_loop_color;
      uint32_t location_punch_color;
      uint32_t location_cd_marker_color;

      struct LocationMarkers {
          Marker* start;
          Marker* end;

          ~LocationMarkers ();

          void hide();
          void show ();
          void set_name (const string&);
          void set_position (jack_nframes_t start, jack_nframes_t end = 0);
          void set_color_rgba (uint32_t);
      };

      LocationMarkers  *find_location_markers (ARDOUR::Location *);
      ARDOUR::Location* find_location_from_marker (Marker *, bool& is_start);

      typedef map<ARDOUR::Location*,LocationMarkers *> LocationMarkerMap;
      LocationMarkerMap location_markers;

      void hide_marker (GtkCanvasItem*, GdkEvent*);
      void clear_marker_display ();
      void mouse_add_new_marker (jack_nframes_t where);

      TimeAxisView*      clicked_trackview;
      AudioTimeAxisView* clicked_audio_trackview;
      AudioRegionView*   clicked_regionview;
      AudioRegionView*   latest_regionview;
      uint32_t           clicked_selection;
      CrossfadeView*     clicked_crossfadeview;
      ControlPoint*      clicked_control_point;

      void catch_vanishing_audio_regionview (AudioRegionView *);
      void set_selected_control_point_from_click (bool add = false, bool with_undo = true, bool no_remove=false);
      void set_selected_track_from_click (bool add = false, bool with_undo = true, bool no_remove=false);
      void set_selected_regionview_from_click (bool add = false, bool no_track_remove=false);
      void set_selected_regionview_from_region_list (ARDOUR::Region& region, bool add = false);
      gint set_selected_regionview_from_map_event (GdkEventAny*, StreamView*, ARDOUR::Region*);
      void collect_new_region_view (AudioRegionView *);

      Gtk::Menu track_context_menu;
      Gtk::Menu track_region_context_menu;
      Gtk::Menu track_selection_context_menu;
      Gtk::Menu track_crossfade_context_menu;

      Gtk::MenuItem* region_edit_menu_split_item;
      Gtk::MenuItem* region_edit_menu_split_multichannel_item;
      Gtk::Menu * track_region_edit_playlist_menu;
      Gtk::Menu * track_edit_playlist_submenu;
      Gtk::Menu * track_selection_edit_playlist_submenu;
      
      void popup_track_context_menu (int, int, ItemType, bool, jack_nframes_t);
      Gtk::Menu* build_track_context_menu (jack_nframes_t);
      Gtk::Menu* build_track_bus_context_menu (jack_nframes_t);
      Gtk::Menu* build_track_region_context_menu (jack_nframes_t frame);
      Gtk::Menu* build_track_crossfade_context_menu (jack_nframes_t);
      Gtk::Menu* build_track_selection_context_menu (jack_nframes_t);
      void add_dstream_context_items (Gtk::Menu_Helpers::MenuList&);
      void add_bus_context_items (Gtk::Menu_Helpers::MenuList&);
      void add_region_context_items (StreamView*, ARDOUR::Region*, Gtk::Menu_Helpers::MenuList&);
      void add_crossfade_context_items (StreamView*, ARDOUR::Crossfade*, Gtk::Menu_Helpers::MenuList&, bool many);
      void add_selection_context_items (Gtk::Menu_Helpers::MenuList&);

      void handle_new_route (ARDOUR::Route&);
      void handle_new_route_p (ARDOUR::Route*);
      void remove_route (TimeAxisView *);
      bool route_removal;

      Gtk::HBox           global_hpacker;
      Gtk::VBox           global_vpacker;
      Gtk::VBox           vpacker;

      GdkCursor          *current_canvas_cursor;

      GtkWidget          *track_gtk_canvas;
      GtkWidget          *time_gtk_canvas;
      Gtk::Widget        *track_canvas;
      Gtk::Widget        *time_canvas;

      GtkCanvasItem*      first_action_message;
      GtkCanvasItem      *verbose_canvas_cursor;
      bool                verbose_cursor_visible;

      void session_control_changed (ARDOUR::Session::ControlType);
      void queue_session_control_changed (ARDOUR::Session::ControlType);

      
      gint track_canvas_motion (GtkCanvasItem*, GdkEvent*);
      void set_verbose_canvas_cursor (string, double x, double y);
      void set_verbose_canvas_cursor_text (string);
      void show_verbose_canvas_cursor();
      void hide_verbose_canvas_cursor();

      bool verbose_cursor_on; // so far unused

      void flush_track_canvas ();
      void flush_time_canvas ();

      Gtk::EventBox      time_canvas_event_box;
      Gtk::EventBox      track_canvas_event_box;
      Gtk::EventBox      time_button_event_box;

      GtkCanvasItem      *minsec_group;
      GtkCanvasItem      *bbt_group;
      GtkCanvasItem      *smpte_group;
      GtkCanvasItem      *frame_group;
      GtkCanvasItem      *tempo_group;
      GtkCanvasItem      *meter_group;
      GtkCanvasItem      *marker_group;
      GtkCanvasItem      *range_marker_group;
      GtkCanvasItem      *transport_marker_group;
      
      enum {
            ruler_metric_smpte = 0,
            ruler_metric_bbt = 1,
            ruler_metric_frames = 2,
            ruler_metric_minsec = 3,

            ruler_time_tempo = 4,
            ruler_time_meter = 5,
            ruler_time_marker = 6,
            ruler_time_range_marker = 7,
            ruler_time_transport_marker = 8,
      };

      static GtkCustomMetric ruler_metrics[4];
      bool                   ruler_shown[9];
      bool                   no_ruler_shown_update;
      
      gint ruler_button_press (GdkEventButton*);
      gint ruler_button_release (GdkEventButton*);
      gint ruler_mouse_motion (GdkEventMotion*);

      gint ruler_pressed_button;
      Gtk::Widget * ruler_grabbed_widget;
      
      void initialize_rulers ();
      void update_just_smpte ();
      void update_fixed_rulers ();
      void update_tempo_based_rulers (); 
      void popup_ruler_menu (jack_nframes_t where = 0, ItemType type = RegionItem);
      void update_ruler_visibility ();
      void ruler_toggled (int);
      gint ruler_label_button_release (GdkEventButton*);
      void store_ruler_visibility ();
      void restore_ruler_visibility ();
      
      static gint _metric_get_smpte (GtkCustomRulerMark **, gulong, gulong, gint);
      static gint _metric_get_bbt (GtkCustomRulerMark **, gulong, gulong, gint);
      static gint _metric_get_frames (GtkCustomRulerMark **, gulong, gulong, gint);
      static gint _metric_get_minsec (GtkCustomRulerMark **, gulong, gulong, gint);
      
      gint metric_get_smpte (GtkCustomRulerMark **, gulong, gulong, gint);
      gint metric_get_bbt (GtkCustomRulerMark **, gulong, gulong, gint);
      gint metric_get_frames (GtkCustomRulerMark **, gulong, gulong, gint);
      gint metric_get_minsec (GtkCustomRulerMark **, gulong, gulong, gint);

      GtkWidget          *_smpte_ruler;
      GtkWidget          *_bbt_ruler;
      GtkWidget          *_frames_ruler;
      GtkWidget          *_minsec_ruler;
      Gtk::Widget        *smpte_ruler;
      Gtk::Widget        *bbt_ruler;
      Gtk::Widget        *frames_ruler;
      Gtk::Widget        *minsec_ruler;
      static Editor      *ruler_editor;

      static const double timebar_height;
      guint32 visible_timebars;
      Gtk::Menu          *editor_ruler_menu;

      
      GtkCanvasItem      *tempo_bar;
      GtkCanvasItem      *meter_bar;
      GtkCanvasItem      *marker_bar;
      GtkCanvasItem      *range_marker_bar;

      GtkCanvasItem      *transport_marker_bar;

      
      GtkCanvasItem      *tempo_line;
      GtkCanvasItem      *meter_line;
      GtkCanvasItem      *marker_line;
      GtkCanvasItem      *range_marker_line;
      GtkCanvasItem      *transport_marker_line;

      GtkCanvasPoints    *tempo_line_points;
      GtkCanvasPoints    *meter_line_points;
      GtkCanvasPoints    *marker_line_points;
      GtkCanvasPoints    *range_marker_line_points;
      GtkCanvasPoints    *transport_marker_line_points;

      Gtk::Label  minsec_label;
      Gtk::Label  bbt_label;
      Gtk::Label  smpte_label;
      Gtk::Label  frame_label;
      Gtk::Label  tempo_label;
      Gtk::Label  meter_label;
      Gtk::Label  mark_label;
      Gtk::Label  range_mark_label;
      Gtk::Label  transport_mark_label;
      

      Gtk::VBox          time_button_vbox;
      Gtk::HBox          time_button_hbox;

      struct Cursor {
          Editor&             editor;
          GtkCanvasPoints    *points;
          GtkCanvasItem      *canvas_item;
          jack_nframes_t      current_frame;
          GtkSignalFunc       callback;
            double                        length;

          Cursor (Editor&, const string& color, GtkSignalFunc callback);
          ~Cursor ();

          void set_position (jack_nframes_t);
          void set_length (double units);
            void set_y_axis (double position);
      };

      friend struct Cursor; /* it needs access to several private
                         fields. XXX fix me.
                        */

      Cursor* playhead_cursor;
      Cursor* edit_cursor;
      GtkCanvasItem* cursor_group;

      void    cursor_to_next_region_point (Cursor*, ARDOUR::RegionPoint);
      void    cursor_to_previous_region_point (Cursor*, ARDOUR::RegionPoint);
      void    cursor_to_region_point (Cursor*, ARDOUR::RegionPoint, int32_t dir);
      void    cursor_to_selection_start (Cursor *);
      void    cursor_to_selection_end   (Cursor *);

      ARDOUR::Region* find_next_region (jack_nframes_t, ARDOUR::RegionPoint, int32_t dir, TrackViewList&, TimeAxisView ** = 0);

      vector<jack_nframes_t> region_boundary_cache;
      void build_region_boundary_cache ();

      Gtk::VBox           trackview_vpacker;

      Gtk::HBox           top_hbox;
      Gtk::HBox           bottom_hbox;
      
      Gtk::Table          edit_packer;
      Gtk::Frame          edit_frame;
      Gtk::VScrollbar     edit_vscrollbar;

      /* the horizontal scroller works in a rather different way
         than a regular scrollbar, since its used for
         zoom control/indication as well. But more importantly,
         its different components (slider, left arrow, right arrow) 
         have to be packed separately into the edit_packer.
      */

      Gtk::HScrollbar     edit_hscrollbar;
      Gtk::DrawingArea    edit_hscroll_slider;
      Gtk::Arrow          edit_hscroll_left_arrow;
      Gtk::Arrow          edit_hscroll_right_arrow;
      Gtk::EventBox       edit_hscroll_left_arrow_event;
      Gtk::EventBox       edit_hscroll_right_arrow_event;
      gint                edit_hscroll_slider_width;
      gint                edit_hscroll_slider_height;
      static const gint   edit_hscroll_edge_width = 3;
      bool                edit_hscroll_dragging;
      double              edit_hscroll_drag_last;
      
      void hscroll_slider_allocate (GtkAllocation *);
      gint hscroll_slider_expose (GdkEventExpose*);
      gint hscroll_slider_button_press (GdkEventButton*);
      gint hscroll_slider_button_release (GdkEventButton*);
      gint hscroll_slider_motion (GdkEventMotion*);

      gint hscroll_trough_expose (GdkEventExpose*);
      gint hscroll_trough_button_press (GdkEventButton*);
      gint hscroll_trough_button_release (GdkEventButton*);

      void update_hscroller ();

      gint hscroll_left_arrow_button_press (GdkEventButton *);
      gint hscroll_left_arrow_button_release (GdkEventButton *);
      gint hscroll_right_arrow_button_press (GdkEventButton *);
      gint hscroll_right_arrow_button_release (GdkEventButton *);
      
      guint32             canvas_width;
      guint32             canvas_height;

      Gtk::ScrolledWindow  track_canvas_scroller;
      Gtk::ScrolledWindow  time_canvas_scroller;
      Gtk::ScrolledWindow  edit_controls_scroller;

      gint edit_controls_button_release (GdkEventButton*);
      Gtk::Menu *edit_controls_left_menu;
      Gtk::Menu *edit_controls_right_menu;

      void track_canvas_scroller_realized ();
      void time_canvas_scroller_realized ();

      Gtk::VBox           track_canvas_vbox;
      Gtk::VBox           time_canvas_vbox;
      Gtk::VBox           edit_controls_vbox;
      Gtk::HBox           edit_controls_hbox;

      void tie_vertical_scrolling ();
      void canvas_horizontally_scrolled ();
      void reposition_and_zoom (jack_nframes_t sample, double fpu);
      gint deferred_reposition_and_zoom (jack_nframes_t sample, double fpu);
      void end_location_changed (ARDOUR::Location*);
      bool repos_zoom_queued;
      bool no_zoom_repos_update;
      bool no_tempo_map_update;

      Gtk::CTree          region_list_display;
      Gtk::CTree_Helpers::RowList::iterator region_list_hidden_node;
      Gtk::Menu          *region_list_menu;
      vector<Gtk::MenuItem*> rl_context_menu_region_items;
      Gtk::ScrolledWindow region_list_scroller;
      Gtk::Frame          region_list_frame;

      gint region_list_display_key_press (GdkEventKey *);
      gint region_list_display_key_release (GdkEventKey *);
      gint region_list_display_button_press (GdkEventButton *);
      gint region_list_display_button_release (GdkEventButton *);
      gint region_list_display_enter_notify (GdkEventCrossing *);
      gint region_list_display_leave_notify (GdkEventCrossing *);
      void region_list_display_selected (gint row, gint col, GdkEvent* ev);
      void region_list_display_unselected (gint row, gint col, GdkEvent* ev);
      void region_list_column_click (gint);
      void region_list_clear ();
      void build_region_list_menu ();

      Gtk::CheckMenuItem* toggle_auto_regions_item;
      Gtk::CheckMenuItem* toggle_full_region_list_item;

      Gtk::MenuItem* import_audio_item;
      Gtk::MenuItem* embed_audio_item;

      bool show_automatic_regions_in_region_list;
      Editing::RegionListSortType region_list_sort_type;

      void reset_region_list_sort_direction (bool);
      void reset_region_list_sort_type (Editing::RegionListSortType);

      void toggle_full_region_list ();
      void toggle_show_auto_regions ();

      static gint _region_list_sorter (GtkCList*, gconstpointer, gconstpointer);
      gint region_list_sorter (gconstpointer, gconstpointer);

      /* named selections */

      Gtk::VPaned         region_selection_vpane;
      Gtk::CList          named_selection_display;
      Gtk::ScrolledWindow named_selection_scroller;

      void name_selection();
      void named_selection_name_chosen ();
      void create_named_selection (string);
      void paste_named_selection (float times);

      void handle_new_named_selection ();
      void add_named_selection_to_named_selection_display (ARDOUR::NamedSelection&);
      void redisplay_named_selections ();

      gint named_selection_display_button_press (GdkEventButton *ev);
      void named_selection_display_selected (gint row, gint col, GdkEvent *ev);
      void named_selection_display_unselected (gint row, gint col, GdkEvent *ev);

      /* track views */
      int track_spacing;
      TrackViewList  track_views;
      TimeAxisView     *trackview_by_y_position (double ypos);

      static GdkCursor* cross_hair_cursor;
      static GdkCursor* trimmer_cursor;
      static GdkCursor* selector_cursor;
      static GdkCursor* grabber_cursor;
      static GdkCursor* zoom_cursor;
      static GdkCursor* time_fx_cursor;
      static GdkCursor* fader_cursor;
      static GdkCursor* speaker_cursor;
      static GdkCursor* null_cursor;
      static GdkCursor* wait_cursor;
      static GdkCursor* timebar_cursor;

      static void build_cursors ();

      SigC::Connection scroll_connection;
      jack_nframes_t last_update_frame;
      void center_screen (jack_nframes_t);
      void center_screen_internal (jack_nframes_t, float);
      
      void update_current_screen ();
      SigC::Connection slower_update_connection;
      void update_slower ();
      
      gint show_track_context_menu (GdkEventButton *);
      void hide_track_context_menu ();

      void session_going_away ();

      jack_nframes_t cut_buffer_start;
      jack_nframes_t cut_buffer_length;

      gint typed_event (GtkCanvasItem*, GdkEvent*, ItemType);
      gint button_press_handler (GtkCanvasItem*, GdkEvent*, ItemType);
      gint button_release_handler (GtkCanvasItem*, GdkEvent*, ItemType);
      gint motion_handler (GtkCanvasItem*, GdkEvent*, ItemType);
      gint enter_handler (GtkCanvasItem*, GdkEvent*, ItemType);
      gint leave_handler (GtkCanvasItem*, GdkEvent*, ItemType);
      
      /* KEYMAP HANDLING */

      void install_keybindings ();

      int ensure_cursor (jack_nframes_t* pos);

      void fake_handle_new_audio_region (ARDOUR::AudioRegion *);
      void handle_new_audio_region (ARDOUR::AudioRegion *);
      void fake_handle_audio_region_removed (ARDOUR::AudioRegion *);
      void handle_audio_region_removed (ARDOUR::AudioRegion *);
      void add_audio_region_to_region_display (ARDOUR::AudioRegion *);
      void region_hidden (ARDOUR::Region*);
      void redisplay_regions ();
      void insert_into_tmp_audio_regionlist(ARDOUR::AudioRegion *);

      list<ARDOUR::AudioRegion *> tmp_audio_region_list;

      void cut_copy (Editing::CutCopyOp);
      void cut_copy_points (Editing::CutCopyOp);
      void cut_copy_regions (Editing::CutCopyOp);
      void cut_copy_ranges (Editing::CutCopyOp);

      void mouse_paste ();
      void paste_internal (jack_nframes_t position, float times);

      /* EDITING OPERATIONS */
      
      void toggle_region_mute ();
      void toggle_region_opaque ();
      void raise_region ();
      void raise_region_to_top ();
      void lower_region ();
      void lower_region_to_bottom ();
      void split_region ();
      void split_region_at (jack_nframes_t);
      void split_regions_at (jack_nframes_t, AudioRegionSelection&);
      void crop_region_to_selection ();
      void set_region_sync_from_edit_cursor ();
      void remove_region_sync();
      void align_selection (ARDOUR::RegionPoint, jack_nframes_t position);
      void align_selection_relative (ARDOUR::RegionPoint point, jack_nframes_t position);
      void align_region (ARDOUR::Region&, ARDOUR::RegionPoint point, jack_nframes_t position);
      void align_region_internal (ARDOUR::Region&, ARDOUR::RegionPoint point, jack_nframes_t position);
      void remove_some_regions ();
      void remove_clicked_region ();
      void destroy_clicked_region ();
      void edit_region ();
      void duplicate_some_regions (AudioRegionSelection&, float times);
      void duplicate_selection (float times);
      void region_fill_selection ();

      void region_fill_track ();
      void audition_playlist_region_standalone (ARDOUR::AudioRegion&);
      void audition_playlist_region_via_route (ARDOUR::AudioRegion&, ARDOUR::Route&);
      void split_multichannel_region();
      void reverse_region ();
      void normalize_region ();
      void denormalize_region ();

      ARDOUR::Region* region_list_button_region;
      void audition_region_from_region_list ();
      void remove_region_from_region_list ();
      void hide_region_from_region_list ();
      void remove_selected_regions_from_region_list ();

      void align (ARDOUR::RegionPoint);
      void align_relative (ARDOUR::RegionPoint);
      void naturalize ();

      void cut ();
      void copy ();
      void paste (float times);

      int  get_prefix (float&, bool&);

      void keyboard_paste ();
      void keyboard_duplicate_region ();
      void keyboard_duplicate_selection ();
      void keyboard_nudge ();
      void keyboard_insert_region_list_selection ();

      void region_from_selection ();
      void create_region_from_selection (std::vector<ARDOUR::AudioRegion*>&);

      bool region_renamed;
      void rename_region ();
      void rename_region_finished (bool);

      void play_from_start ();
      void play_from_edit_cursor ();
      void play_selected_region ();
      void audition_selected_region ();
      void toggle_loop_playback ();
      void loop_selected_region ();
      void play_location (ARDOUR::Location&);
      void loop_location (ARDOUR::Location&);

      Editing::ZoomFocus zoom_focus;

      void temporal_zoom_selection ();
      void temporal_zoom_session ();
      void temporal_zoom (gdouble scale);
      void temporal_zoom_by_frame (jack_nframes_t start, jack_nframes_t end, string op);
      void temporal_zoom_to_frame (bool coarser, jack_nframes_t frame);

      void amplitude_zoom (gdouble scale);
      void amplitude_zoom_step (bool in);

      ARDOUR::AudioRegion* region_list_display_drag_region;
      char                 need_wave_cursor;
      gint                 region_list_display_motion (GdkEventMotion*);

      void insert_region_list_drag (ARDOUR::AudioRegion&);
      void insert_region_list_selection (float times);

      void insert_sndfile (bool as_tracks);
      void embed_audio ();    // inserts into region list
      int  reject_because_rate_differs (string path, SF_INFO& finfo, string action, bool multiple_pending);

      void do_embed_sndfiles (vector<string> paths, bool split);
      void embed_sndfile (string path, bool split, bool multiple_files, bool& check_sr);

      void do_insert_sndfile (vector<string> path, bool multi, jack_nframes_t frame);
      void insert_paths_as_new_tracks (std::vector<std::string> paths, bool multi); // inserts files as new tracks
      void insert_sndfile_into (string path, bool multi, AudioTimeAxisView* tv, jack_nframes_t& frame, bool prompt=true);
      static void* _insert_sndfile_thread (void*);
      void*  insert_sndfile_thread (void*);

      /* generic interthread progress window */
      
      ArdourDialog* interthread_progress_window;
      Gtk::Label interthread_progress_label;
      Gtk::VBox interthread_progress_vbox;
      Gtk::ProgressBar interthread_progress_bar;
      Gtk::Button interthread_cancel_button;
      Gtk::Label interthread_cancel_label;
      SigC::Connection  interthread_progress_connection;
      void interthread_cancel_clicked ();
      void build_interthread_progress_window ();
      ARDOUR::InterThreadInfo* current_interthread_info;

      /* import specific info */

      ARDOUR::Session::import_status import_status;
      gint import_progress_timeout (void *);
      static void *_import_thread (void *);
      void* import_thread ();
      void catch_new_audio_region (ARDOUR::AudioRegion*);
      ARDOUR::AudioRegion* last_audio_region;

      /* to support this ... */

      void import_audio (bool as_tracks);
      void do_import (vector<string> paths, bool split, bool as_tracks);

      void move_to_start ();
      void move_to_end ();
      void goto_frame ();
      void center_playhead ();
      void center_edit_cursor ();
      void edit_cursor_backward ();
      void edit_cursor_forward ();
      void playhead_backward ();
      void playhead_forward ();
      void scroll_backward (float pages=0.8f);
      void scroll_forward (float pages=0.8f);
      void scroll_tracks_down ();
      void scroll_tracks_up ();
      void delete_sample_forward ();
      void delete_sample_backward ();
      void delete_screen ();
      void search_backwards ();
      void search_forwards ();
      void set_mark ();
      void clear_markers ();
      void clear_ranges ();
      void clear_locations ();
      void jump_forward_to_mark ();
      void jump_backward_to_mark ();
      void cursor_align (bool playhead_to_edit);

      void remove_last_capture ();

      void set_selection_from_range (ARDOUR::Location&);
      void set_selection_from_punch ();
      void set_selection_from_loop ();

      void add_location_from_selection ();
      void set_route_loop_selection ();

      void add_location_from_playhead_cursor ();

      void reverse_selection ();
      void edit_envelope ();

      void start_scrolling ();
      void stop_scrolling ();

      void keyboard_selection_begin ();
      void keyboard_selection_finish (bool add);
      bool have_pending_keyboard_selection;
      jack_nframes_t pending_keyboard_selection_start;

      ARDOUR::AudioRegion* select_region_for_operation (int dir, TimeAxisView **tv);
      void extend_selection_to_end_of_region (bool next);
      void extend_selection_to_start_of_region (bool previous);

      Editing::SnapType snap_type;
      Editing::SnapMode snap_mode;
      double snap_threshold;

      void soundfile_chosen_for_insert (string selection, bool split_channels);
      void soundfile_chosen_for_embed (string selection, bool split_channels);
      void soundfile_chosen_for_import (string selection, bool split_channels);

      void handle_gui_changes (string, void *);

      void    hide_all_tracks (bool with_select);

      void route_list_selected (gint row, gint col, GdkEvent* ev);
      void route_list_unselected (gint row, gint col, GdkEvent* ev);
      void redisplay_route_list();
      gint route_list_reordered ();
      bool ignore_route_list_reorder;
      void queue_route_list_reordered (gint row, gint col);

      struct DragInfo {
          GtkCanvasItem* item;
          void* data;
          jack_nframes_t last_frame_position;
          int32_t pointer_frame_offset;
          jack_nframes_t grab_frame;
          jack_nframes_t last_pointer_frame;
          jack_nframes_t current_pointer_frame;
          double grab_x, grab_y;
          double cumulative_x_drag;
          double cumulative_y_drag;
          double current_pointer_x;
          double current_pointer_y;
          void (Editor::*motion_callback)(GtkCanvasItem*, GdkEvent*);
          void (Editor::*finished_callback)(GtkCanvasItem*, GdkEvent*);
          TimeAxisView* last_trackview;
          bool x_constrained;
          bool copy;
          bool was_rolling;
          bool first_move;
          bool move_threshold_passsed;
          bool want_move_threshold;
          bool brushing;
          ARDOUR::Location* copied_location;
      } drag_info;

      struct LineDragInfo {
          uint32_t before;
          uint32_t after;
      };

      LineDragInfo current_line_drag_info;

      void start_grab (GdkEvent*, GdkCursor* cursor = 0);
      bool end_grab (GtkCanvasItem*, GdkEvent*);

      Gtk::Menu fade_context_menu;
      void popup_fade_context_menu (int, int, GtkCanvasItem*, ItemType);

      void start_fade_in_grab (GtkCanvasItem*, GdkEvent*);
      void start_fade_out_grab (GtkCanvasItem*, GdkEvent*);
      void fade_in_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void fade_out_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void fade_in_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      void fade_out_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      
      std::set<ARDOUR::Playlist*> motion_frozen_playlists;
      void region_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void region_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      void region_copy_drag_finished_callback (GtkCanvasItem*, GdkEvent*);

      void cursor_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void cursor_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      void marker_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void marker_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      void control_point_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void control_point_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      void line_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void line_drag_finished_callback (GtkCanvasItem*, GdkEvent*);

      void tempo_marker_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void tempo_marker_drag_finished_callback (GtkCanvasItem*, GdkEvent*);
      void meter_marker_drag_motion_callback (GtkCanvasItem*, GdkEvent*);
      void meter_marker_drag_finished_callback (GtkCanvasItem*, GdkEvent*);

      gint mouse_rename_region (GtkCanvasItem*, GdkEvent*);

      void start_region_grab (GtkCanvasItem*, GdkEvent*);
      void start_region_copy_grab (GtkCanvasItem*, GdkEvent*);
      void start_region_brush_grab (GtkCanvasItem*, GdkEvent*);
      void start_selection_grab (GtkCanvasItem*, GdkEvent*);
      void start_cursor_grab (GtkCanvasItem*, GdkEvent*);
      void start_marker_grab (GtkCanvasItem*, GdkEvent*);
      void start_control_point_grab (GtkCanvasItem*, GdkEvent*);
      void start_line_grab_from_regionview (GtkCanvasItem*, GdkEvent*);
      void start_line_grab_from_line (GtkCanvasItem*, GdkEvent*);
      void start_line_grab (AutomationLine *, GdkEvent*);
      void start_tempo_marker_grab (GtkCanvasItem*, GdkEvent*);
      void start_meter_marker_grab (GtkCanvasItem*, GdkEvent*);

      void region_view_item_click (AudioRegionView&, GdkEventButton*);

      void remove_gain_control_point (GtkCanvasItem*, GdkEvent*);
      void remove_control_point (GtkCanvasItem*, GdkEvent*);

      void mouse_brush_insert_region (AudioRegionView*, jack_nframes_t pos);
      void brush (jack_nframes_t);

      void show_verbose_time_cursor (jack_nframes_t frame, double offset = 0, double xpos=-1, double ypos=-1);
      void show_verbose_duration_cursor (jack_nframes_t start, jack_nframes_t end, double offset = 0, double xpos=-1, double ypos=-1);

      /* static versions of these are public in PublicEditor */
      
      gint _canvas_crossfade_view_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_fade_in_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_fade_in_handle_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_fade_out_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_fade_out_handle_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_region_view_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_region_view_name_highlight_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_region_view_name_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_stream_view_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_automation_track_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_marker_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_zoom_rect_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_selection_rect_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_selection_start_trim_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_selection_end_trim_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_control_point_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_line_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_tempo_marker_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_meter_marker_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_tempo_bar_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_meter_bar_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_marker_bar_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_range_marker_bar_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_transport_marker_bar_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint _canvas_imageframe_item_view_event(GtkCanvasItem *item, GdkEvent* event, gpointer data) ;
      gint _canvas_imageframe_view_event(GtkCanvasItem *item, GdkEvent* event, gpointer data) ;
      gint _canvas_imageframe_start_handle_event(GtkCanvasItem* item, GdkEvent* event, gpointer data) ;
      gint _canvas_imageframe_end_handle_event(GtkCanvasItem* item, GdkEvent* event, gpointer data) ;
      gint _canvas_marker_time_axis_view_event(GtkCanvasItem* item, GdkEvent* event, gpointer data) ;
      gint _canvas_markerview_item_view_event(GtkCanvasItem* item, GdkEvent* event, gpointer data) ;
      gint _canvas_markerview_start_handle_event(GtkCanvasItem* item, GdkEvent* event, gpointer data) ;
      gint _canvas_markerview_end_handle_event(GtkCanvasItem* item, GdkEvent* event, gpointer data) ;

      /* now the real things */

      gint canvas_crossfade_view_event (GtkCanvasItem* item, GdkEvent* event, CrossfadeView*);
      gint canvas_fade_in_event (GtkCanvasItem* item, GdkEvent* event, AudioRegionView*);
      gint canvas_fade_in_handle_event (GtkCanvasItem* item, GdkEvent* event, AudioRegionView*);
      gint canvas_fade_out_event (GtkCanvasItem* item, GdkEvent* event, AudioRegionView*);
      gint canvas_fade_out_handle_event (GtkCanvasItem* item, GdkEvent* event, AudioRegionView*);
      gint canvas_region_view_event (GtkCanvasItem* item, GdkEvent* event, AudioRegionView*);
      gint canvas_stream_view_event (GtkCanvasItem* item, GdkEvent* event, AudioTimeAxisView*);
      gint canvas_automation_track_event (GtkCanvasItem* item, GdkEvent* event, AutomationTimeAxisView*);
      gint canvas_marker_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_zoom_rect_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_selection_rect_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_selection_start_trim_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_selection_end_trim_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_control_point_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_line_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_tempo_marker_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_meter_marker_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_tempo_bar_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_meter_bar_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_marker_bar_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_range_marker_bar_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_transport_marker_bar_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_region_view_name_highlight_event (GtkCanvasItem* item, GdkEvent* event);
      gint canvas_region_view_name_event (GtkCanvasItem* item, GdkEvent* event);

      /* these are not publically accessible, but we still need the static versions
         till we use Gnome::Canvas.
      */
      
      static gint _canvas_copy_region_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint canvas_copy_region_event (GtkCanvasItem* item, GdkEvent* event);

      static gint _canvas_playhead_cursor_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint canvas_playhead_cursor_event (GtkCanvasItem* item, GdkEvent* event);

      static gint _canvas_edit_cursor_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint canvas_edit_cursor_event (GtkCanvasItem* item, GdkEvent* event);
      
      static gint _track_canvas_event (GtkCanvasItem* item, GdkEvent* event, gpointer data);
      gint track_canvas_event (GtkCanvasItem* item, GdkEvent* event);

      gint track_canvas_button_press_event (GdkEventButton *);
      gint track_canvas_button_release_event (GdkEventButton *);
      
      void track_canvas_allocate (GtkAllocation* alloc);
      void time_canvas_allocate (GtkAllocation* alloc);

      void set_edit_cursor (GdkEvent* event);
      void set_playhead_cursor (GdkEvent* event);

      void kbd_driver (SigC::Slot1<void,GdkEvent*>, bool use_track_canvas = true, bool use_time_canvas = true, bool can_select = true);
      void kbd_set_playhead_cursor ();
      void kbd_set_edit_cursor ();
      void kbd_split ();
      void kbd_align (ARDOUR::RegionPoint);
      void kbd_align_relative (ARDOUR::RegionPoint);
      void kbd_brush ();
      void kbd_audition ();

      void kbd_do_split (GdkEvent*);
      void kbd_do_align (GdkEvent*, ARDOUR::RegionPoint);
      void kbd_do_align_relative (GdkEvent*, ARDOUR::RegionPoint);
      void kbd_do_brush (GdkEvent*);
      void kbd_do_audition (GdkEvent*);

      void fake_handle_new_duration ();
      void handle_new_duration ();
      void initialize_canvas ();
      void reset_scrolling_region (GtkAllocation* alloc = 0);
      void scroll_canvas ();

        /* sub-event loop handling */

        int32_t sub_event_loop_status;
        void run_sub_event_loop ();
        void finish_sub_event_loop (int status);
        gint finish_sub_event_loop_on_delete (GdkEventAny*, int32_t status);
      
      /* display control */
      
      bool _show_measures;
      bool _show_waveforms;
      bool _follow_playhead;
      bool _show_waveforms_recording;
      
      void add_bbt_marks (ARDOUR::TempoMap::BBTPointList&);

      ARDOUR::TempoMap::BBTPointList *current_bbt_points;
      
      typedef vector<GtkCanvasItem*> TimeLineList;
      TimeLineList free_measure_lines;
      TimeLineList used_measure_lines;

      GtkCanvasItem* time_line_group;
      GtkCanvasItem* get_time_line ();
      void hide_measures ();
      void draw_measures ();
      void draw_time_bars ();

      void new_tempo_section ();

      void mouse_add_new_tempo_event (jack_nframes_t where);
      void mouse_add_new_meter_event (jack_nframes_t where);

      void remove_tempo_marker (GtkCanvasItem*);
      void remove_meter_marker (GtkCanvasItem*);
      gint real_remove_tempo_marker (ARDOUR::TempoSection*);
      gint real_remove_meter_marker (ARDOUR::MeterSection*);
      
      void edit_tempo_section (ARDOUR::TempoSection*);
      void edit_meter_section (ARDOUR::MeterSection*);
      void edit_tempo_marker (GtkCanvasItem*);
      void edit_meter_marker (GtkCanvasItem*);
      
      void marker_menu_edit ();
      void marker_menu_remove ();
      void marker_menu_rename ();
      void marker_menu_hide ();
      void marker_menu_loop_range ();
      void marker_menu_play_from ();
      void marker_menu_set_playhead ();
      void marker_menu_set_from_playhead ();
      void marker_menu_set_from_selection ();
      void new_transport_marker_menu_set_loop ();
      void new_transport_marker_menu_set_punch ();
      void update_loop_range_view (bool visibility=false);
      void update_punch_range_view (bool visibility=false);
        gint new_transport_marker_menu_popdown (GdkEventAny*);
      void marker_context_menu (GdkEventButton*, GtkCanvasItem*);
      void tm_marker_context_menu (GdkEventButton*, GtkCanvasItem*);
      void transport_marker_context_menu (GdkEventButton*, GtkCanvasItem*);
      void new_transport_marker_context_menu (GdkEventButton*, GtkCanvasItem*);
      void build_marker_menu ();
      void build_tm_marker_menu ();
      void build_transport_marker_menu ();
      void build_new_transport_marker_menu ();

      Gtk::Menu* tm_marker_menu;
      Gtk::Menu* marker_menu;
      Gtk::Menu* transport_marker_menu;
      Gtk::Menu* new_transport_marker_menu;
      GtkCanvasItem* marker_menu_item;

      typedef list<Marker*> Marks;
      Marks metric_marks;

      void remove_metric_marks ();
      void draw_metric_marks (const ARDOUR::Metrics& metrics);

      void tempo_map_changed (ARDOUR::Change);
      void redisplay_tempo ();
      
      void snap_to (jack_nframes_t& first, int32_t direction = 0, bool for_mark = false);
      uint32_t bbt_beat_subdivision;

      /* toolbar */
      
      void editor_mixer_button_toggled ();

      AudioClock               selection_start_clock;
      Gtk::Label               selection_start_clock_label;
      AudioClock               selection_end_clock;
      Gtk::Label               selection_end_clock_label;
      AudioClock               edit_cursor_clock;
      Gtk::Label               edit_cursor_clock_label;
      AudioClock               zoom_range_clock;
      Gtk::Button              zoom_in_button;
      Gtk::Button              zoom_out_button;
      Gtk::Button              zoom_out_full_button;
      Gtk::Button              zoom_onetoone_button;

      Gtk::VBox                toolbar_clock_vbox;
      Gtk::VBox                toolbar_selection_clock_vbox; 
      Gtk::Table               toolbar_selection_clock_table;
      Gtk::Label               toolbar_selection_cursor_label;
      
      Gtk::Table               mouse_mode_button_table;
      Gtkmmext::TearOff*       mouse_mode_tearoff;
      Gtk::ToggleButton        mouse_select_button;
      Gtk::ToggleButton        mouse_move_button;
      Gtk::ToggleButton        mouse_gain_button;
      Gtk::ToggleButton        mouse_zoom_button;
      Gtk::ToggleButton        mouse_timefx_button;
      Gtk::ToggleButton        mouse_audition_button;
      GroupedButtons          *mouse_mode_button_set;
      void                     mouse_mode_toggled (Editing::MouseMode m);
      bool                     ignore_mouse_mode_toggle;

      gint                     mouse_select_button_release (GdkEventButton*);

      Gtk::VBox                automation_box;
      Gtk::Button              automation_mode_button;
      Gtk::ToggleButton        global_automation_button;

      Gtk::Combo               edit_mode_selector;
      Gtk::Label               edit_mode_label;
      Gtk::VBox                edit_mode_box;

      gint edit_mode_selection_done (GdkEventAny*);

      Gtk::Combo               snap_type_selector;
      Gtk::Label               snap_type_label;
      Gtk::VBox                snap_type_box;

      gint snap_type_selection_done (GdkEventAny*);

      Gtk::Combo               snap_mode_selector;
      Gtk::Label               snap_mode_label;
      Gtk::VBox                snap_mode_box;

      gint snap_mode_selection_done (GdkEventAny*);

      Gtk::Combo               zoom_focus_selector;
      Gtk::Label               zoom_focus_label;
      Gtk::VBox                zoom_focus_box;
      
      gint zoom_focus_selection_done (GdkEventAny*);

      Gtk::Label          zoom_indicator_label;
      Gtk::HBox           zoom_indicator_box;
      Gtk::VBox           zoom_indicator_vbox;

      void                update_zoom_indicator ();
      void                zoom_adjustment_changed();

      void                edit_cursor_clock_changed();
      
      void setup_toolbar ();

      Gtkmmext::TearOff*       tools_tearoff;
      Gtk::HBox                toolbar_hbox;
      Gtk::EventBox            toolbar_base;
      Gtk::Frame               toolbar_frame;

      /* selection process */

      Selection* selection;
      Selection* cut_buffer;

      void time_selection_changed ();
      void track_selection_changed ();
      void region_selection_changed ();
      void point_selection_changed ();
      void audio_track_selection_changed ();
      void line_selection_changed ();

      enum SelectionOp {
            CreateSelection,
            SelectionStartTrim,
            SelectionEndTrim,
            SelectionMove
      } selection_op;

      void start_selection_op (GtkCanvasItem* item, GdkEvent* event, SelectionOp);
      void drag_selection (GtkCanvasItem* item, GdkEvent* event);
      void end_selection_op (GtkCanvasItem* item, GdkEvent* event);
      void cancel_selection ();

      void region_selection_op (void (ARDOUR::Region::*pmf)(void));
      void region_selection_op (void (ARDOUR::Region::*pmf)(void*), void*);
      void region_selection_op (void (ARDOUR::Region::*pmf)(bool), bool);

      bool audio_region_selection_covers (jack_nframes_t where);

      Gtk::VPaned  route_group_vpane;
      Gtk::Frame   route_list_frame;
      Gtk::Frame   edit_group_list_frame;

      /* transport range select process */
      enum RangeMarkerOp {
            CreateRangeMarker,
            CreateTransportMarker
      } range_marker_op;

      void start_range_markerbar_op (GtkCanvasItem* item, GdkEvent* event, RangeMarkerOp);
      void drag_range_markerbar_op (GtkCanvasItem* item, GdkEvent* event);
      void end_range_markerbar_op (GtkCanvasItem* item, GdkEvent* event);

      
      GtkCanvasItem      *range_bar_drag_rect;
      GtkCanvasItem      *transport_bar_drag_rect;
      GtkCanvasItem      *marker_drag_line;
      GtkCanvasPoints    *marker_drag_line_points;
      GtkCanvasItem      *range_marker_drag_rect;

      void update_marker_drag_item (ARDOUR::Location *);
      
      GtkCanvasItem      *transport_bar_range_rect;
      GtkCanvasItem      *transport_bar_preroll_rect;
      GtkCanvasItem      *transport_bar_postroll_rect;
      GtkCanvasItem      *transport_loop_range_rect;
      GtkCanvasItem      *transport_punch_range_rect;
      GtkCanvasItem      *transport_punchin_line;
      GtkCanvasItem      *transport_punchout_line;
      GtkCanvasItem      *transport_preroll_rect;
      GtkCanvasItem      *transport_postroll_rect;

      ARDOUR::Location*  transport_loop_location();
      ARDOUR::Location*  transport_punch_location();

      ARDOUR::Location   *temp_location;
      
      /* object rubberband select process */
      
      void start_rubberband_select (GtkCanvasItem* item, GdkEvent* event);
      void drag_rubberband_select (GtkCanvasItem* item, GdkEvent* event);
      void end_rubberband_select (GtkCanvasItem* item, GdkEvent* event);

      bool select_all_within (jack_nframes_t start, jack_nframes_t end, gdouble topy, gdouble boty, bool add);
      
      GtkCanvasItem   *rubberband_rect;
      
      /* mouse zoom process */

      void start_mouse_zoom (GtkCanvasItem* item, GdkEvent* event);
      void drag_mouse_zoom (GtkCanvasItem* item, GdkEvent* event);
      void end_mouse_zoom (GtkCanvasItem* item, GdkEvent* event);

      GtkCanvasItem   *zoom_rect;
      void reposition_zoom_rect (jack_nframes_t start, jack_nframes_t end);
      
      /* diskstream/route display management */

      Gtk::CList          route_list;
      Gtk::ScrolledWindow route_list_scroller;
      Gtk::Menu          *route_list_menu;

      void route_list_column_click (gint);
      void build_route_list_menu ();
      void select_all_routes ();
      void unselect_all_routes ();
      void select_all_audiotracks ();
      void unselect_all_audiotracks ();
      void select_all_audiobus ();
      void unselect_all_audiobus ();

      /* edit group management */

      Gtk::Button         edit_group_list_button;
      Gtk::Label          edit_group_list_button_label;
      Gtk::CList          edit_group_list;
      Gtk::ScrolledWindow edit_group_list_scroller;
      Gtk::Menu          *edit_group_list_menu;
      Gtk::VBox           edit_group_vbox;


      void edit_group_list_column_click (gint);
      void build_edit_group_list_menu ();
      void select_all_edit_groups ();
      void unselect_all_edit_groups ();
      void new_edit_group ();
      void edit_group_list_button_clicked ();
      gint edit_group_list_button_press_event (GdkEventButton* ev);
      void edit_group_selected (gint row, gint col, GdkEvent* ev);
      void edit_group_unselected (gint row, gint col, GdkEvent* ev);
      void fake_add_edit_group (ARDOUR::RouteGroup* group);
      void add_edit_group (ARDOUR::RouteGroup* group);
      void group_flags_changed (void*, ARDOUR::RouteGroup*);

      Gtk::VBox           list_vpacker;

      static GdkPixmap* check_pixmap;
      static GdkBitmap* check_mask;
      static GdkPixmap* empty_pixmap;
      static GdkBitmap* empty_mask;

      /* autoscrolling */

      int autoscroll_timeout_tag;
      int autoscroll_direction;
      uint32_t autoscroll_cnt;
      jack_nframes_t autoscroll_distance;
     
      static gint _autoscroll_canvas (void *);
      gint autoscroll_canvas ();
      void start_canvas_autoscroll (int direction);
      void stop_canvas_autoscroll ();
      void maybe_autoscroll (GdkEvent*);

      /* trimming */
      enum TrimOp {
            StartTrim,
            EndTrim,
            ContentsTrim,
      } trim_op;

      void start_trim (GtkCanvasItem*, GdkEvent*);
      void point_trim (GdkEvent*);
      void trim_motion_callback (GtkCanvasItem*, GdkEvent*);
      void single_contents_trim (AudioRegionView&, jack_nframes_t, bool, bool, bool);
      void single_start_trim (AudioRegionView&, jack_nframes_t, bool, bool);
      void single_end_trim (AudioRegionView&, jack_nframes_t, bool, bool);

      void trim_finished_callback (GtkCanvasItem*, GdkEvent*);
      void thaw_region_after_trim (AudioRegionView& rv);
      
      void trim_region_to_edit_cursor ();
      void trim_region_from_edit_cursor ();

      bool show_gain_after_trim;

      /* Drag-n-Drop */

      int convert_drop_to_paths (std::vector<std::string>& paths,
                           GdkDragContext     *context,
                           gint                x,
                           gint                y,
                           GtkSelectionData   *data,
                           guint               info,
                           guint               time);

      void  track_canvas_drag_data_received  (GdkDragContext     *context,
                                    gint                x,
                                    gint                y,
                                    GtkSelectionData   *data,
                                    guint               info,
                                    guint               time);

      void  region_list_display_drag_data_received  (GdkDragContext     *context,
                                           gint                x,
                                           gint                y,
                                           GtkSelectionData   *data,
                                           guint               info,
                                           guint               time);
      
      /* audio export */

      ExportDialog *export_dialog;
      void export_range (jack_nframes_t start, jack_nframes_t end);

      int write_region_selection(AudioRegionSelection&);
      bool write_region (string path, ARDOUR::AudioRegion&);
      void export_region ();
      void write_a_region ();
      void bounce_region_selection ();
      void bounce_range_selection ();
      void external_edit_region ();

      int write_audio_selection (TimeSelection&);
      bool write_audio_range (ARDOUR::Playlist&, uint32_t channels, list<ARDOUR::AudioRange>&);

      void write_selection ();

      /* history */

      UndoAction get_memento() const;

      void begin_reversible_command (string cmd_name);
      void commit_reversible_command ();

      /* visual history */

      UndoHistory visual_history;
      UndoCommand current_visual_command;

      void begin_reversible_visual_command (string cmd_name);
      void commit_reversible_visual_command ();

      void update_title ();   
      void update_title_s (string snapshot_name);

      struct State {
          Selection* selection;
          double     frames_per_unit;

          State();
          ~State();
      };

      gint autosave_session ();
      SigC::Connection autosave_timeout_connection;
      void toggle_autosave ();

      void store_state (State&) const;
      void restore_state (State *);

      void instant_save ();

      ARDOUR::AudioRegion* last_audition_region;
      
      /* freeze operations */

      ARDOUR::InterThreadInfo freeze_status;
      gint freeze_progress_timeout (void *);
      static void* _freeze_thread (void*);
      void* freeze_thread ();

      void freeze_route ();
      void unfreeze_route ();

      /* edit-group solo + mute */

      void set_edit_group_solo (ARDOUR::Route&, bool);
      void set_edit_group_mute (ARDOUR::Route&, bool);

      /* duplication */

      void duplicate_dialog (bool for_region);
      
      /* edit menu */

      Gtk::Menu* edit_menu;
      void edit_menu_map_handler ();

      jack_nframes_t event_frame (GdkEvent*, double* px = 0, double* py = 0);

      void time_fx_motion (GtkCanvasItem*, GdkEvent*);
      void start_time_fx (GtkCanvasItem*, GdkEvent*);
      void end_time_fx (GtkCanvasItem*, GdkEvent*);

      struct TimeStretchDialog : public ArdourDialog {
          ARDOUR::Session::TimeStretchRequest request;
          Editor&               editor;
          AudioRegionSelection  regions;
          Gtk::ProgressBar      progress_bar;
          Gtk::ToggleButton     quick_button;
          Gtk::ToggleButton     antialias_button;
          Gtk::Button           cancel_button;
          Gtk::Button           action_button;
          Gtk::HBox             lower_button_box;
          Gtk::HBox             upper_button_box;
          Gtk::VBox             packer;
          int                   status;

          TimeStretchDialog (Editor& e);

          gint update_progress ();
          SigC::Connection first_cancel;
          SigC::Connection first_delete;
          void cancel_timestretch_in_progress ();
          gint delete_timestretch_in_progress (GdkEventAny*);
      };

      /* "whats mine is yours" */

      friend class TimeStretchDialog;

      TimeStretchDialog* current_timestretch;

      static void* timestretch_thread (void *arg);
      int run_timestretch (AudioRegionSelection&, float fraction);
      void do_timestretch (TimeStretchDialog&);

      /* editor-mixer strip */

      MixerStrip *current_mixer_strip;
      Gtk::VBox current_mixer_strip_vbox;
      void cms_deleted ();
      void current_mixer_strip_hidden ();
      void current_mixer_strip_removed ();

      void detach_tearoff (Gtk::Box* b, Gtk::Widget* w);
      void reattach_tearoff (Gtk::Box* b, Gtk::Widget* w, int32_t n);

      /* nudging tracks */

      void nudge_track (bool use_edit_cursor, bool forwards);

      /* xfades */

      bool _xfade_visibility;
      
      /* <CMT Additions> */
      void handle_new_imageframe_time_axis_view(std::string track_name, void* src) ;
      void handle_new_imageframe_marker_time_axis_view(std::string track_name, TimeAxisView* marked_track) ;

      void start_imageframe_grab(GtkCanvasItem*, GdkEvent*) ;
      void start_markerview_grab(GtkCanvasItem*, GdkEvent*) ;

      void imageframe_drag_motion_callback(GtkCanvasItem*, GdkEvent*) ;
      void markerview_drag_motion_callback(GtkCanvasItem*, GdkEvent*) ;
      void timeaxis_item_drag_finished_callback(GtkCanvasItem*, GdkEvent*) ;

      gint canvas_imageframe_item_view_event(GtkCanvasItem* item, GdkEvent* event, ImageFrameView* ifv);
      gint canvas_imageframe_view_event(GtkCanvasItem* item, GdkEvent* event, ImageFrameTimeAxis* ifta);
      gint canvas_imageframe_start_handle_event(GtkCanvasItem* item, GdkEvent* event, ImageFrameView* ifv);
      gint canvas_imageframe_end_handle_event(GtkCanvasItem* item, GdkEvent* event, ImageFrameView* ifv);

      gint canvas_marker_time_axis_view_event(GtkCanvasItem* item, GdkEvent* event, MarkerTimeAxis* mta);
      gint canvas_markerview_item_view_event(GtkCanvasItem* item, GdkEvent* event, MarkerView* mv);
      gint canvas_markerview_start_handle_event(GtkCanvasItem* item, GdkEvent* event, MarkerView* mv);
      gint canvas_markerview_end_handle_event(GtkCanvasItem* item, GdkEvent* event, MarkerView* mv);

      void imageframe_start_handle_op(GtkCanvasItem* item, GdkEvent* event) ;
      void imageframe_end_handle_op(GtkCanvasItem* item, GdkEvent* event) ;
      void imageframe_start_handle_trim_motion(GtkCanvasItem* item, GdkEvent* event) ;
      void imageframe_start_handle_end_trim(GtkCanvasItem* item, GdkEvent* event) ;
      void imageframe_end_handle_trim_motion(GtkCanvasItem* item, GdkEvent* event) ;
      void imageframe_end_handle_end_trim(GtkCanvasItem* item, GdkEvent* event) ;
      
      void markerview_item_start_handle_op(GtkCanvasItem* item, GdkEvent* event) ;
      void markerview_item_end_handle_op(GtkCanvasItem* item, GdkEvent* event) ;
      void markerview_start_handle_trim_motion(GtkCanvasItem* item, GdkEvent* event) ;
      void markerview_start_handle_end_trim(GtkCanvasItem* item, GdkEvent* event) ;
      void markerview_end_handle_trim_motion(GtkCanvasItem* item, GdkEvent* event) ;
      void markerview_end_handle_end_trim(GtkCanvasItem* item, GdkEvent* event) ;

      void popup_imageframe_edit_menu(int button, int32_t time, GtkCanvasItem* ifv, bool with_frame) ;
      void popup_marker_time_axis_edit_menu(int button, int32_t time, GtkCanvasItem* ifv, bool with_frame) ;

      ImageFrameSocketHandler* image_socket_listener ;
      /* </CMT Additions> */

      void toggle_xfade_active (ARDOUR::Crossfade*);
      void toggle_xfade_length (ARDOUR::Crossfade*);
      void edit_xfade (ARDOUR::Crossfade*);
      void remove_xfade ();
      void xfade_edit_left_region ();
      void xfade_edit_right_region ();

      static const int32_t default_width = 995;
      static const int32_t default_height = 765;

      /* nudge */

      Gtk::Button      nudge_forward_button;
      Gtk::Button      nudge_backward_button;
      Gtk::HBox        nudge_hbox;
      Gtk::VBox        nudge_vbox;
      Gtk::Label       nudge_label;
      AudioClock       nudge_clock;

      jack_nframes_t get_nudge_distance (jack_nframes_t pos, jack_nframes_t& next);
      
      /* audio filters */

      void apply_filter (ARDOUR::AudioFilter&, string cmd);

      /* handling cleanup */

      int playlist_deletion_dialog (ARDOUR::Playlist*);

      vector<SigC::Connection> session_connections;

      /* tracking step changes of track height */

      TimeAxisView* current_stepping_trackview;
      struct timeval last_track_height_step_timestamp;
      gint track_height_step_timeout();
      SigC::Connection step_timeout;

      TimeAxisView* entered_track;
      AudioRegionView* entered_regionview;
      bool clear_entered_track;
      gint left_track_canvas (GdkEventCrossing*);
      void set_entered_track (TimeAxisView*);
      void set_entered_regionview (AudioRegionView*);
      gint left_automation_track ();

      bool _new_regionviews_show_envelope;

      void toggle_gain_envelope_visibility ();
      void toggle_gain_envelope_active ();
      
      typedef map<Editing::ColorID,std::string> ColorStyleMap;
      void init_colormap ();
};

#endif /* __ardour_editor_h__ */

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