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editor_canvas_events.cc

/*
    Copyright (C) 2000 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.

*/

#include <cstdlib>
#include <cmath>
#include <algorithm>

#include <pbd/stacktrace.h>

#include <ardour/audio_diskstream.h>
#include <ardour/audioplaylist.h>

#include "editor.h"
#include "keyboard.h"
#include "public_editor.h"
#include "audio_region_view.h"
#include "audio_streamview.h"
#include "crossfade_view.h"
#include "audio_time_axis.h"
#include "region_gain_line.h"
#include "automation_gain_line.h"
#include "automation_pan_line.h"
#include "automation_time_axis.h"
#include "redirect_automation_line.h"
#include "canvas_impl.h"
#include "simplerect.h"

#include "i18n.h"

using namespace sigc;
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;

bool
Editor::track_canvas_scroll (GdkEventScroll* ev)
{
      int x, y;
      double wx, wy;
      nframes_t xdelta;
      int direction = ev->direction;

  retry:
      switch (direction) {
      case GDK_SCROLL_UP:
            if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
                  //if (ev->state == GDK_CONTROL_MASK) {
                  /* XXX 
                     the ev->x will be out of step with the canvas
                     if we're in mid zoom, so we have to get the damn mouse 
                     pointer again
                  */
                  track_canvas.get_pointer (x, y);
                  track_canvas.window_to_world (x, y, wx, wy);
                  wx += horizontal_adjustment.get_value();
                  wy += vertical_adjustment.get_value();
                  
                  GdkEvent event;
                  event.type = GDK_BUTTON_RELEASE;
                  event.button.x = wx;
                  event.button.y = wy;
                  
                  nframes_t where = event_frame (&event, 0, 0);
                  temporal_zoom_to_frame (false, where);
                  return true;
            } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
                  direction = GDK_SCROLL_LEFT;
                  goto retry;
            } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
                  if (!current_stepping_trackview) {
                        step_timeout = Glib::signal_timeout().connect (mem_fun(*this, &Editor::track_height_step_timeout), 500);
                        if (!(current_stepping_trackview = trackview_by_y_position (ev->y))) {
                              return false;
                        }
                  }
                  gettimeofday (&last_track_height_step_timestamp, 0);
                  current_stepping_trackview->step_height (true);
                  return true;
            } else {
                  scroll_tracks_up_line ();
                  return true;
            }
            break;

      case GDK_SCROLL_DOWN:
            if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
                  //if (ev->state == GDK_CONTROL_MASK) {
                  track_canvas.get_pointer (x, y);
                  track_canvas.window_to_world (x, y, wx, wy);
                  wx += horizontal_adjustment.get_value();
                  wy += vertical_adjustment.get_value();
                  
                  GdkEvent event;
                  event.type = GDK_BUTTON_RELEASE;
                  event.button.x = wx;
                  event.button.y = wy;
                  
                  nframes_t where = event_frame (&event, 0, 0);
                  temporal_zoom_to_frame (true, where);
                  return true;
            } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
                  direction = GDK_SCROLL_RIGHT;
                  goto retry;
            } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
                  if (!current_stepping_trackview) {
                        step_timeout = Glib::signal_timeout().connect (mem_fun(*this, &Editor::track_height_step_timeout), 500);
                        if (!(current_stepping_trackview = trackview_by_y_position (ev->y))) {
                              return false;
                        }
                  }
                  gettimeofday (&last_track_height_step_timestamp, 0);
                  current_stepping_trackview->step_height (false);
                  return true;
            } else {
                  scroll_tracks_down_line ();
                  return true;
            }
            break;      

      case GDK_SCROLL_LEFT:
            xdelta = (current_page_frames() / 8);
            if (leftmost_frame > xdelta) {
                  reset_x_origin (leftmost_frame - xdelta);
            } else {
                  reset_x_origin (0);
            }
            break;

      case GDK_SCROLL_RIGHT:
            xdelta = (current_page_frames() / 8);
            if (max_frames - xdelta > leftmost_frame) {
                  reset_x_origin (leftmost_frame + xdelta);
            } else {
                  reset_x_origin (max_frames - current_page_frames());
            }
            break;

      default:
            /* what? */
            break;
      }

      return false;
}

bool
Editor::track_canvas_scroll_event (GdkEventScroll *event)
{
      track_canvas.grab_focus();
      track_canvas_scroll (event);
      return false;
}

bool
Editor::time_canvas_scroll (GdkEventScroll* ev)
{
      nframes_t xdelta;
      int direction = ev->direction;

      switch (direction) {
      case GDK_SCROLL_UP:
            temporal_zoom_step (true);
            break;

      case GDK_SCROLL_DOWN:
            temporal_zoom_step (false);
            break;      

      case GDK_SCROLL_LEFT:
            xdelta = (current_page_frames() / 2);
            if (leftmost_frame > xdelta) {
                  reset_x_origin (leftmost_frame - xdelta);
            } else {
                  reset_x_origin (0);
            }
            break;

      case GDK_SCROLL_RIGHT:
            xdelta = (current_page_frames() / 2);
            if (max_frames - xdelta > leftmost_frame) {
                  reset_x_origin (leftmost_frame + xdelta);
            } else {
                  reset_x_origin (max_frames - current_page_frames());
            }
            break;

      default:
            /* what? */
            break;
      }

      return false;
}

bool
Editor::time_canvas_scroll_event (GdkEventScroll *event)
{
      time_canvas.grab_focus();
      time_canvas_scroll (event);
      return false;
}

bool
Editor::track_canvas_button_press_event (GdkEventButton *event)
{
      selection->clear ();
      track_canvas.grab_focus();
      return false;
}

bool
Editor::track_canvas_button_release_event (GdkEventButton *event)
{
      if (drag_info.item) {
            end_grab (drag_info.item, (GdkEvent*) event);
      }
      return false;
}

bool
Editor::track_canvas_motion_notify_event (GdkEventMotion *event)
{
      int x, y;
      /* keep those motion events coming */
      track_canvas.get_pointer (x, y);
      return false;
}

bool
Editor::track_canvas_motion (GdkEvent *ev)
{
      if (verbose_cursor_visible) {
            verbose_canvas_cursor->property_x() = clamp_verbose_cursor_x (ev->motion.x + 20);
            verbose_canvas_cursor->property_y() = clamp_verbose_cursor_y (ev->motion.y + 20);
      }

#ifdef GTKOSX
      flush_canvas ();
#endif

      return false;
}

bool
Editor::typed_event (ArdourCanvas::Item* item, GdkEvent *event, ItemType type)
{
      gint ret = FALSE;
      
      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            ret = button_press_handler (item, event, type);
            break;
      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, type);
            break;
      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, type);
            break;

      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, type);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, type);
            break;

      default:
            break;
      }
      return ret;
}

bool
Editor::canvas_region_view_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView *rv)
{
      bool ret = false;

      if (!rv->sensitive ()) {
            return false;
      }


      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &rv->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            ret = button_press_handler (item, event, RegionItem);
            break;

      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, RegionItem);
            break;

      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, RegionItem);
            break;

      case GDK_ENTER_NOTIFY:
            set_entered_track (&rv->get_time_axis_view ());
            set_entered_regionview (rv);
            break;

      case GDK_LEAVE_NOTIFY:
            set_entered_track (0);
            set_entered_regionview (0);
            break;

      default:
            break;
      }

      return ret;
}

bool
Editor::canvas_stream_view_event (GdkEvent *event, ArdourCanvas::Item* item, RouteTimeAxisView *tv)
{
      bool ret = FALSE;
      
      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = 0;
            clicked_control_point = 0;
            clicked_trackview = tv;
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(tv);
            ret = button_press_handler (item, event, StreamItem);
            break;

      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, StreamItem);
            break;

      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, StreamItem);
            break;

      case GDK_ENTER_NOTIFY:
            set_entered_track (tv);
            break;

      case GDK_LEAVE_NOTIFY:
            set_entered_track (0);
            break;

      default:
            break;
      }

      return ret;
}

bool
Editor::canvas_automation_track_event (GdkEvent *event, ArdourCanvas::Item* item, AutomationTimeAxisView *atv)
{
      bool ret = false;

      
      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = 0;
            clicked_control_point = 0;
            clicked_trackview = atv;
            clicked_audio_trackview = 0;
            ret = button_press_handler (item, event, AutomationTrackItem);
            break;

      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, AutomationTrackItem);
            break;

      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, AutomationTrackItem);
            break;

      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, AutomationTrackItem);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, AutomationTrackItem);
            break;

      default:
            break;
      }

      return ret;
}

bool
Editor::canvas_fade_in_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
{
      /* we handle only button 3 press/release events */

      if (!rv->sensitive()) {
            return false;
      }

      switch (event->type) {
      case GDK_BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &rv->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            if (event->button.button == 3) {
                  return button_press_handler (item, event, FadeInItem);
            }
            break;

      case GDK_BUTTON_RELEASE:
            if (event->button.button == 3) {
                  return button_release_handler (item, event, FadeInItem);
            }
            break;

      default:
            break;
            
      }

      /* proxy for the regionview */
      
      return canvas_region_view_event (event, rv->get_canvas_group(), rv);
}

bool
Editor::canvas_fade_in_handle_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
{
      bool ret = false;
      
      if (!rv->sensitive()) {
            return false;
      }

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &rv->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            ret = button_press_handler (item, event, FadeInHandleItem);
            break;

      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, FadeInHandleItem);
            break;

      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, FadeInHandleItem);
            break;

      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, FadeInHandleItem);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, FadeInHandleItem);
            break;

      default:
            break;
      }

      return ret;
}

bool
Editor::canvas_fade_out_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
{
      /* we handle only button 3 press/release events */

      if (!rv->sensitive()) {
            return false;
      }

      switch (event->type) {
      case GDK_BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &rv->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            if (event->button.button == 3) {
                  return button_press_handler (item, event, FadeOutItem);
            }
            break;

      case GDK_BUTTON_RELEASE:
            if (event->button.button == 3) {
                  return button_release_handler (item, event, FadeOutItem);
            }
            break;

      default:
            break;
            
      }

      /* proxy for the regionview */
      
      return canvas_region_view_event (event, rv->get_canvas_group(), rv);
}

bool
Editor::canvas_fade_out_handle_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
{
      bool ret = false;
      
      if (!rv->sensitive()) {
            return false;
      }

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &rv->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            ret = button_press_handler (item, event, FadeOutHandleItem);
            break;

      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, FadeOutHandleItem);
            break;

      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, FadeOutHandleItem);
            break;

      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, FadeOutHandleItem);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, FadeOutHandleItem);
            break;

      default:
            break;
      }

      return ret;
}

struct DescendingRegionLayerSorter {
    bool operator()(boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
          return a->layer() > b->layer();
    }
};

bool
Editor::canvas_crossfade_view_event (GdkEvent* event, ArdourCanvas::Item* item, CrossfadeView* xfv)
{
      /* we handle only button 3 press/release events */

      switch (event->type) {
      case GDK_BUTTON_PRESS:
            clicked_crossfadeview = xfv;
            clicked_trackview = &clicked_crossfadeview->get_time_axis_view();
            if (event->button.button == 3) {
                  return button_press_handler (item, event, CrossfadeViewItem);
            } 
            break;

      case GDK_BUTTON_RELEASE:
            if (event->button.button == 3) {
                  bool ret = button_release_handler (item, event, CrossfadeViewItem);
                  return ret;
            }
            break;

      default:
            break;
            
      }

      /* XXX do not forward double clicks */

      if (event->type == GDK_2BUTTON_PRESS) {
            return false;
      }
      
      /* proxy for the upper most regionview */

      /* XXX really need to check if we are in the name highlight,
         and proxy to that when required.
      */
      
      TimeAxisView& tv (xfv->get_time_axis_view());
      AudioTimeAxisView* atv;

      if ((atv = dynamic_cast<AudioTimeAxisView*>(&tv)) != 0) {

            if (atv->is_audio_track()) {

                  boost::shared_ptr<AudioPlaylist> pl;
                  if ((pl = boost::dynamic_pointer_cast<AudioPlaylist> (atv->get_diskstream()->playlist())) != 0) {

                        Playlist::RegionList* rl = pl->regions_at (event_frame (event));

                        if (!rl->empty()) {
                              DescendingRegionLayerSorter cmp;
                              rl->sort (cmp);

                              RegionView* rv = atv->view()->find_view (rl->front());

                              delete rl;

                              /* proxy */
                              
                              return canvas_region_view_event (event, rv->get_canvas_group(), rv);
                        } 

                        delete rl;
                  }
            }
      }

      return TRUE;
}

bool
Editor::canvas_control_point_event (GdkEvent *event, ArdourCanvas::Item* item, ControlPoint* cp)
{
      ItemType type;

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_control_point = cp;
            clicked_trackview = &cp->line.trackview;
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            clicked_regionview = 0;
            break;

      case GDK_SCROLL_UP:
            break;

      case GDK_SCROLL_DOWN:
            break;

      default:
            break;
      }

      if (dynamic_cast<AudioRegionGainLine*> (&cp->line) != 0) {
            type = GainControlPointItem;
      } else if (dynamic_cast<AutomationGainLine*> (&cp->line) != 0) {
            type = GainAutomationControlPointItem;
      } else if (dynamic_cast<AutomationPanLine*> (&cp->line) != 0) {
            type = PanAutomationControlPointItem;
      } else if (dynamic_cast<RedirectAutomationLine*> (&cp->line) != 0) {
            type = RedirectAutomationControlPointItem;
      } else {
            return false;
      }

      return typed_event (item, event, type);
}

bool
Editor::canvas_line_event (GdkEvent *event, ArdourCanvas::Item* item, AutomationLine* al)
{
      ItemType type;

      if (dynamic_cast<AudioRegionGainLine*> (al) != 0) {
            type = GainLineItem;
      } else if (dynamic_cast<AutomationGainLine*> (al) != 0) {
            type = GainAutomationLineItem;
      } else if (dynamic_cast<AutomationPanLine*> (al) != 0) {
            type = PanAutomationLineItem;
      } else if (dynamic_cast<RedirectAutomationLine*> (al) != 0) {
            type = RedirectAutomationLineItem;
      } else {
            return false;
      }

      return typed_event (item, event, type);
}

bool
Editor::canvas_selection_rect_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
{
      bool ret = false;
      
      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_selection = rect->id;
            ret = button_press_handler (item, event, SelectionItem);
            break;
      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, SelectionItem);
            break;
      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, SelectionItem);
            break;
            /* Don't need these at the moment. */
      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, SelectionItem);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, SelectionItem);
            break;

      default:
            break;
      }
                  
      return ret;
}

bool
Editor::canvas_selection_start_trim_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
{
      bool ret = false;

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_selection = rect->id;
            ret = button_press_handler (item, event, StartSelectionTrimItem);
            break;
      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, StartSelectionTrimItem);
            break;
      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, StartSelectionTrimItem);
            break;
      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, StartSelectionTrimItem);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, StartSelectionTrimItem);
            break;

      default:
            break;
      }
                  
      return ret;
}

bool
Editor::canvas_selection_end_trim_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
{
      bool ret = false;

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_selection = rect->id;
            ret = button_press_handler (item, event, EndSelectionTrimItem);
            break;
      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, EndSelectionTrimItem);
            break;
      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, EndSelectionTrimItem);
            break;
      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, EndSelectionTrimItem);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, EndSelectionTrimItem);
            break;

      default:
            break;
      }
                  
      return ret;
}


bool
Editor::canvas_region_view_name_highlight_event (GdkEvent* event, ArdourCanvas::Item* item, RegionView* rv)
{
      bool ret = false;
      
      if (!rv->sensitive()) {
            return false;
      }

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &clicked_regionview->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            ret = button_press_handler (item, event, RegionViewNameHighlight);
            break;
      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, RegionViewNameHighlight);
            break;
      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, RegionViewNameHighlight);
            break;
      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, RegionViewNameHighlight);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, RegionViewNameHighlight);
            break;

      default:
            break;
      }

      return ret;
}

bool
Editor::canvas_region_view_name_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView* rv)
{
      bool ret = false;

      if (!rv->sensitive()) {
            return false;
      }

      switch (event->type) {
      case GDK_BUTTON_PRESS:
      case GDK_2BUTTON_PRESS:
      case GDK_3BUTTON_PRESS:
            clicked_regionview = rv;
            clicked_control_point = 0;
            clicked_trackview = &clicked_regionview->get_time_axis_view();
            clicked_audio_trackview = dynamic_cast<AudioTimeAxisView*>(clicked_trackview);
            ret = button_press_handler (item, event, RegionViewName);
            break;
      case GDK_BUTTON_RELEASE:
            ret = button_release_handler (item, event, RegionViewName);
            break;
      case GDK_MOTION_NOTIFY:
            ret = motion_handler (item, event, RegionViewName);
            break;
      case GDK_ENTER_NOTIFY:
            ret = enter_handler (item, event, RegionViewName);
            break;

      case GDK_LEAVE_NOTIFY:
            ret = leave_handler (item, event, RegionViewName);
            break;

      default:
            break;
      }

      return ret;
}

bool
Editor::canvas_marker_event (GdkEvent *event, ArdourCanvas::Item* item, Marker* marker)
{
      return typed_event (item, event, MarkerItem);
}

bool
Editor::canvas_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, MarkerBarItem);
}

bool
Editor::canvas_range_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, RangeMarkerBarItem);
}

bool
Editor::canvas_transport_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, TransportMarkerBarItem);
}

bool
Editor::canvas_cd_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, CdMarkerBarItem);
}

bool
Editor::canvas_tempo_marker_event (GdkEvent *event, ArdourCanvas::Item* item, TempoMarker* marker)
{
      return typed_event (item, event, TempoMarkerItem);
}

bool
Editor::canvas_meter_marker_event (GdkEvent *event, ArdourCanvas::Item* item, MeterMarker* marker)
{
      return typed_event (item, event, MeterMarkerItem);
}

bool
Editor::canvas_tempo_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, TempoBarItem);
}

bool
Editor::canvas_meter_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, MeterBarItem);
}

bool
Editor::canvas_playhead_cursor_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, PlayheadCursorItem);
}

bool
Editor::canvas_zoom_rect_event (GdkEvent *event, ArdourCanvas::Item* item)
{
      return typed_event (item, event, NoItem);
}


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