Initial import of gtk2_ardour.

git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 999 insertions, 0 deletions

diff --git a/gtk2_ardour/editor_canvas_events.cc b/gtk2_ardour/editor_canvas_events.cc
new file mode 100644
index 0000000000..060b7d4842
--- /dev/null
+++ b/gtk2_ardour/editor_canvas_events.cc
@@ -0,0 +1,999 @@
+/*
+    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.
+
+    $Id$
+*/
+
+#include <cstdlib>
+#include <cmath>
+
+#include <gtk-canvas.h>
+
+#include <ardour/diskstream.h>
+#include <ardour/audioplaylist.h>
+
+#include "editor.h"
+#include "public_editor.h"
+#include "regionview.h"
+#include "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 "i18n.h"
+
+using namespace SigC;
+using namespace ARDOUR;
+using namespace Gtk;
+
+gint
+Editor::_canvas_copy_region_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = (Editor*)data;
+	return editor->canvas_copy_region_event (item, event);
+}
+
+gint
+Editor::_canvas_crossfade_view_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	CrossfadeView* xfv = static_cast<CrossfadeView*> (data);
+	Editor* editor = dynamic_cast<Editor*>(&xfv->get_time_axis_view().editor);
+	return editor->canvas_crossfade_view_event (item, event, xfv);
+}
+
+gint
+Editor::_canvas_fade_in_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView* rv = static_cast<AudioRegionView*> (data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+	return editor->canvas_fade_in_event (item, event, rv);
+}
+
+gint
+Editor::_canvas_fade_in_handle_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView* rv = static_cast<AudioRegionView*> (data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+	return editor->canvas_fade_in_handle_event (item, event, rv);
+}
+
+gint
+Editor::_canvas_fade_out_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView* rv = static_cast<AudioRegionView*> (data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+	return editor->canvas_fade_out_event (item, event, rv);
+}
+
+gint
+Editor::_canvas_fade_out_handle_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView* rv = static_cast<AudioRegionView*> (data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+	return editor->canvas_fade_out_handle_event (item, event, rv);
+}
+
+gint
+Editor::_canvas_region_view_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView *rv = reinterpret_cast<AudioRegionView *>(data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+
+	return editor->canvas_region_view_event (item, event, rv);
+}
+
+gint
+Editor::_canvas_region_view_name_highlight_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView *rv = reinterpret_cast<AudioRegionView *> (data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+
+	return editor->canvas_region_view_name_highlight_event (item, event);
+}
+
+gint
+Editor::_canvas_region_view_name_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AudioRegionView *rv = reinterpret_cast<AudioRegionView *> (data);
+	Editor* editor = dynamic_cast<Editor*>(&rv->get_time_axis_view().editor);
+	
+	return editor->canvas_region_view_name_event (item, event);
+}
+
+gint
+Editor::_canvas_stream_view_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* note that stream views are by definition audio track views */
+
+	AudioTimeAxisView *tv = (AudioTimeAxisView *) data;
+	Editor* editor = dynamic_cast<Editor*>(&tv->editor);
+
+	return editor->canvas_stream_view_event (item, event, tv);
+}
+
+gint
+Editor::_canvas_automation_track_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AutomationTimeAxisView* atv = (AutomationTimeAxisView*) data;
+	Editor* editor = dynamic_cast<Editor*>(&atv->editor);
+
+	return editor->canvas_automation_track_event (item, event, atv);
+}
+
+gint
+Editor::_canvas_control_point_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	ControlPoint *cp = reinterpret_cast<ControlPoint *>(data);
+	Editor* editor = dynamic_cast<Editor*>(&cp->line.trackview.editor);
+
+	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;
+
+	default:
+		break;
+	}
+
+	return editor->canvas_control_point_event (item, event);
+}
+
+gint
+Editor::_canvas_line_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	AutomationLine *line = reinterpret_cast<AutomationLine*> (data);
+	Editor* editor = dynamic_cast<Editor*>(&line->trackview.editor);
+
+	return editor->canvas_line_event (item, event);
+}
+
+gint
+Editor::_canvas_tempo_marker_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor*) data);
+	return editor->canvas_tempo_marker_event (item, event);
+}
+
+gint
+Editor::_canvas_meter_marker_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor *) data);
+	return editor->canvas_meter_marker_event (item, event);
+}
+
+gint
+Editor::_canvas_tempo_bar_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* XXX NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_tempo_bar_event (item, event);
+}
+
+gint
+Editor::_canvas_meter_bar_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* XXX NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_meter_bar_event (item, event);
+}
+
+gint
+Editor::_canvas_marker_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor*) data);
+	return editor->canvas_marker_event (item, event);
+}
+
+gint
+Editor::_canvas_marker_bar_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_marker_bar_event (item, event);
+}
+
+gint
+Editor::_canvas_range_marker_bar_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_range_marker_bar_event (item, event);
+}
+
+gint
+Editor::_canvas_transport_marker_bar_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_transport_marker_bar_event (item, event);
+}
+
+gint
+Editor::_canvas_playhead_cursor_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_playhead_cursor_event (item, event);
+}
+
+gint
+Editor::_canvas_edit_cursor_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* NO CAST */
+	Editor* editor = (Editor*) data;
+	return editor->canvas_edit_cursor_event (item, event);
+}
+
+gint
+Editor::_canvas_zoom_rect_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor*) data);
+	return editor->canvas_zoom_rect_event (item, event);
+}
+
+gint
+Editor::_canvas_selection_rect_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor*) data);
+	return editor->canvas_selection_rect_event (item, event);
+}
+
+gint
+Editor::_canvas_selection_start_trim_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor*) data);
+	return editor->canvas_selection_start_trim_event (item, event);
+}
+
+gint
+Editor::_canvas_selection_end_trim_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	Editor* editor = dynamic_cast<Editor*>((PublicEditor*) data);
+	return editor->canvas_selection_end_trim_event (item, event);
+}
+
+gint
+Editor::_track_canvas_event (GtkCanvasItem *item, GdkEvent *event, gpointer data)
+{
+	/* NO CAST */
+
+	Editor* editor = (Editor*) data;
+	return editor->track_canvas_event (item, event);
+}
+
+/********** END OF.TATIC EVENT HANDLERS */
+
+gint
+Editor::track_canvas_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	gint x, y;
+
+	switch (event->type) {
+	case GDK_MOTION_NOTIFY:
+		/* keep those motion events coming */
+		track_canvas->get_pointer (x, y);
+		return track_canvas_motion (item, event);
+
+	case GDK_BUTTON_RELEASE:
+		switch (event->button.button) {
+		case 4:
+		case 5:
+			button_release_handler (item, event, NoItem);
+			break;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return FALSE;
+}
+
+gint
+Editor::track_canvas_motion (GtkCanvasItem *item, GdkEvent *ev)
+{
+	if (verbose_cursor_visible) {
+		gtk_canvas_item_set (verbose_canvas_cursor,
+				     "x", ev->motion.x + 20,
+				     "y", ev->motion.y + 20,
+				     NULL);
+	}
+	return FALSE;
+}
+
+gint
+Editor::typed_event (GtkCanvasItem *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;
+}
+
+gint
+Editor::canvas_region_view_event (GtkCanvasItem *item, GdkEvent *event, AudioRegionView *rv)
+{
+	gint ret = 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_regionview (rv);
+		break;
+
+	case GDK_LEAVE_NOTIFY:
+		set_entered_regionview (0);
+		break;
+
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+gint
+Editor::canvas_stream_view_event (GtkCanvasItem *item, GdkEvent *event, AudioTimeAxisView *tv)
+{
+	gint 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 = 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:
+		break;
+
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+
+
+gint
+Editor::canvas_automation_track_event (GtkCanvasItem *item, GdkEvent *event, AutomationTimeAxisView *atv)
+{
+	gint 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;
+}
+
+gint
+Editor::canvas_fade_in_event (GtkCanvasItem *item, GdkEvent *event, AudioRegionView *rv)
+{
+	/* we handle only button 3 press/release events */
+
+	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 (rv->get_canvas_group(), event, rv);
+}
+
+gint
+Editor::canvas_fade_in_handle_event (GtkCanvasItem *item, GdkEvent *event, AudioRegionView *rv)
+{
+	gint ret = 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;
+}
+
+gint
+Editor::canvas_fade_out_event (GtkCanvasItem *item, GdkEvent *event, AudioRegionView *rv)
+{
+	/* we handle only button 3 press/release events */
+
+	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 (rv->get_canvas_group(), event, rv);
+}
+
+gint
+Editor::canvas_fade_out_handle_event (GtkCanvasItem *item, GdkEvent *event, AudioRegionView *rv)
+{
+	gint ret = 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()(Region* a, Region* b) {
+	    return a->layer() > b->layer();
+    }
+};
+
+gint
+Editor::canvas_crossfade_view_event (GtkCanvasItem* item, GdkEvent* event, 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) {
+			gint ret = button_release_handler (item, event, CrossfadeViewItem);
+			return ret;
+		}
+		break;
+
+	default:
+		break;
+		
+	}
+
+	
+	/* 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()) {
+
+			AudioPlaylist* pl = atv->get_diskstream()->playlist();
+			Playlist::RegionList* rl = pl->regions_at (event_frame (event));
+
+			if (!rl->empty()) {
+				DescendingRegionLayerSorter cmp;
+				rl->sort (cmp);
+
+				AudioRegionView* arv = atv->view->find_view (*(dynamic_cast<AudioRegion*> (rl->front())));
+
+				/* proxy */
+				
+				delete rl;
+
+				return canvas_region_view_event (arv->get_canvas_group(), event, arv);
+			}
+		}
+	}
+
+	return TRUE;
+}
+
+gint
+Editor::canvas_control_point_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	ItemType type;
+	ControlPoint *cp;
+	
+	if ((cp = static_cast<ControlPoint *> (gtk_object_get_data (GTK_OBJECT(item), "control_point"))) == 0) {
+		fatal << _("programming error: control point canvas item has no control point object pointer!") << endmsg;
+		/*NOTREACHED*/
+	}
+
+	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);
+}
+
+gint
+Editor::canvas_line_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	ItemType type;
+	AutomationLine *al;
+	
+	if ((al = static_cast<AutomationLine *> (gtk_object_get_data (GTK_OBJECT(item), "line"))) == 0) {
+		fatal << _("programming error: line canvas item has no line object pointer!") << endmsg;
+		/*NOTREACHED*/
+	}
+
+	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);
+}
+
+
+gint
+Editor::canvas_selection_rect_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	gint ret = FALSE;
+	SelectionRect *rect = 0;
+
+	if ((rect = reinterpret_cast<SelectionRect*> (gtk_object_get_data (GTK_OBJECT(item), "rect"))) == 0) {
+		fatal << _("programming error: no \"rect\" pointer associated with selection item") << endmsg;
+		/*NOTREACHED*/
+	}
+
+	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;
+}
+
+gint
+Editor::canvas_selection_start_trim_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	gint ret = FALSE;
+	SelectionRect *rect = 0;
+
+	if ((rect = reinterpret_cast<SelectionRect*> (gtk_object_get_data (GTK_OBJECT(item), "rect"))) == 0) {
+		fatal << _("programming error: no \"rect\" pointer associated with selection item") << endmsg;
+		/*NOTREACHED*/
+	}
+
+	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;
+}
+
+gint
+Editor::canvas_selection_end_trim_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	gint ret = FALSE;
+	SelectionRect *rect = 0;
+
+	if ((rect = reinterpret_cast<SelectionRect*> (gtk_object_get_data (GTK_OBJECT(item), "rect"))) == 0) {
+		fatal << _("programming error: no \"rect\" pointer associated with selection item") << endmsg;
+		/*NOTREACHED*/
+	}
+
+	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;
+}
+
+
+gint
+Editor::canvas_region_view_name_highlight_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	gint ret = FALSE;
+
+	switch (event->type) {
+	case GDK_BUTTON_PRESS:
+	case GDK_2BUTTON_PRESS:
+	case GDK_3BUTTON_PRESS:
+		clicked_regionview = reinterpret_cast<AudioRegionView *> (gtk_object_get_data(GTK_OBJECT(item), "regionview"));
+		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, AudioRegionViewNameHighlight);
+		break;
+	case GDK_BUTTON_RELEASE:
+		ret = button_release_handler (item, event, AudioRegionViewNameHighlight);
+		break;
+	case GDK_MOTION_NOTIFY:
+		ret = motion_handler (item, event, AudioRegionViewNameHighlight);
+		break;
+	case GDK_ENTER_NOTIFY:
+		ret = enter_handler (item, event, AudioRegionViewNameHighlight);
+		break;
+
+	case GDK_LEAVE_NOTIFY:
+		ret = leave_handler (item, event, AudioRegionViewNameHighlight);
+		break;
+
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+gint
+Editor::canvas_region_view_name_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	gint ret = FALSE;
+
+	switch (event->type) {
+	case GDK_BUTTON_PRESS:
+	case GDK_2BUTTON_PRESS:
+	case GDK_3BUTTON_PRESS:
+		clicked_regionview = reinterpret_cast<AudioRegionView *> (gtk_object_get_data(GTK_OBJECT(item), "regionview"));
+		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, AudioRegionViewName);
+		break;
+	case GDK_BUTTON_RELEASE:
+		ret = button_release_handler (item, event, AudioRegionViewName);
+		break;
+	case GDK_MOTION_NOTIFY:
+		ret = motion_handler (item, event, AudioRegionViewName);
+		break;
+	case GDK_ENTER_NOTIFY:
+		ret = enter_handler (item, event, AudioRegionViewName);
+		break;
+
+	case GDK_LEAVE_NOTIFY:
+		ret = leave_handler (item, event, AudioRegionViewName);
+		break;
+
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+gint
+Editor::canvas_marker_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, MarkerItem);
+}
+
+gint
+Editor::canvas_marker_bar_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, MarkerBarItem);
+}
+
+gint
+Editor::canvas_range_marker_bar_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, RangeMarkerBarItem);
+}
+
+gint
+Editor::canvas_transport_marker_bar_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, TransportMarkerBarItem);
+}
+
+gint
+Editor::canvas_tempo_marker_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, TempoMarkerItem);
+}
+
+gint
+Editor::canvas_meter_marker_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, MeterMarkerItem);
+}
+
+gint
+Editor::canvas_tempo_bar_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, TempoBarItem);
+}
+
+gint
+Editor::canvas_meter_bar_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, MeterBarItem);
+}
+
+gint
+Editor::canvas_playhead_cursor_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, PlayheadCursorItem);
+}
+
+gint
+Editor::canvas_edit_cursor_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, EditCursorItem);
+}
+
+gint
+Editor::canvas_zoom_rect_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, NoItem);
+}
+
+gint
+Editor::canvas_copy_region_event (GtkCanvasItem *item, GdkEvent *event)
+{
+	return typed_event (item, event, RegionItem);
+}
+