Heavy-duty abstraction work to split type-specific classes into

specializations of (new, for the most part) generic bases.  (eg. most everything
from the MIDI branch except for actual MIDI things, so merges have a chance of
succeeding).  Also the new edit toolbar, and various other cleanup things I did
along the way.

Should be functionally equivalent (except the toolbar), this is just design work.

She's a big'un....



git-svn-id: svn://localhost/ardour2/trunk@727 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 731 insertions, 0 deletions

diff --git a/gtk2_ardour/audio_region_editor.cc b/gtk2_ardour/audio_region_editor.cc
new file mode 100644
index 0000000000..194f358b42
--- /dev/null
+++ b/gtk2_ardour/audio_region_editor.cc
@@ -0,0 +1,731 @@
+/*
+    Copyright (C) 2001 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 <ardour/audioregion.h>
+#include <ardour/utils.h>
+#include <gtkmm2ext/utils.h>
+#include <gtkmm2ext/stop_signal.h>
+#include <cmath>
+
+#include "audio_region_editor.h"
+#include "audio_region_view.h"
+#include "ardour_ui.h"
+#include "utils.h"
+#include "gui_thread.h"
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+using namespace sigc;
+using namespace std;
+
+AudioRegionEditor::AudioRegionEditor (Session& s, AudioRegion& r, AudioRegionView& rv)
+	: RegionEditor (s),
+	  _region (r),
+	  _region_view (rv),
+	  name_label (_("NAME:")),
+	  lock_button (_("lock")),
+	  mute_button (_("mute")),
+	  opaque_button (_("opaque")),
+	  envelope_active_button(_("active")),
+	  envelope_view_button(_("visible")),
+	  raise_arrow (Gtk::ARROW_UP, Gtk::SHADOW_OUT),
+	  lower_arrow (Gtk::ARROW_DOWN, Gtk::SHADOW_OUT),
+	  layer_label (_("Layer")),
+	  audition_button (_("play")),
+	  time_table (3, 2),
+	  start_clock ("AudioRegionEditorClock", true),
+	  end_clock ("AudioRegionEditorClock", true),
+	  length_clock ("AudioRegionEditorClock", true, true),
+	  sync_offset_clock ("AudioRegionEditorClock", true, true),
+	  envelope_loop_table (1, 3),
+	  envelope_label (_("ENVELOPE")),
+	  fade_in_table (4, 3),
+	  fade_in_length_adjustment (5.0, 0.0, 10000, 0.05, 1),
+	  fade_in_length_spinner (fade_in_length_adjustment, 10),
+	  fade_out_table (4, 3),
+	  fade_out_length_adjustment (5.0, 0.0, 10000, 0.05, 1),
+	  fade_out_length_spinner (fade_out_length_adjustment, 10)
+
+{
+	start_clock.set_session (&_session);
+	end_clock.set_session (&_session);
+	length_clock.set_session (&_session);
+
+	name_entry.set_name ("AudioRegionEditorEntry");
+	name_label.set_name ("AudioRegionEditorLabel");
+
+	name_hbox.set_spacing (5);
+	name_hbox.pack_start (name_label, false, false);
+	name_hbox.pack_start (name_entry, false, false);
+
+	raise_button.add (raise_arrow);
+	lower_button.add (lower_arrow);
+	layer_frame.set_name ("BaseFrame");
+	layer_frame.set_shadow_type (Gtk::SHADOW_IN);
+	layer_frame.add (layer_value_label);
+	layer_label.set_name ("AudioRegionEditorLabel");
+	layer_value_label.set_name ("AudioRegionEditorLabel");
+	Gtkmm2ext::set_size_request_to_display_given_text (layer_value_label, "99", 5, 2);
+
+	layer_hbox.set_spacing (5);
+	layer_hbox.pack_start (layer_label, false, false);
+	layer_hbox.pack_start (layer_frame, false, false);
+#if 0
+	layer_hbox.pack_start (raise_button, false, false);
+	layer_hbox.pack_start (lower_button, false, false);
+#endif
+
+	mute_button.set_name ("AudioRegionEditorToggleButton");
+	opaque_button.set_name ("AudioRegionEditorToggleButton");
+	lock_button.set_name ("AudioRegionEditorToggleButton");
+	envelope_active_button.set_name ("AudioRegionEditorToggleButton");
+	envelope_view_button.set_name ("AudioRegionEditorToggleButton");
+	fade_in_active_button.set_name ("AudioRegionEditorToggleButton");
+	fade_out_active_button.set_name ("AudioRegionEditorToggleButton");
+	audition_button.set_name ("AudioRegionEditorToggleButton");
+
+	ARDOUR_UI::instance()->tooltips().set_tip (mute_button, _("mute this region"));
+	ARDOUR_UI::instance()->tooltips().set_tip (opaque_button, _("regions underneath this one cannot be heard"));
+	ARDOUR_UI::instance()->tooltips().set_tip (lock_button, _("prevent any changes to this region"));
+	ARDOUR_UI::instance()->tooltips().set_tip (envelope_active_button, _("use the gain envelope during playback"));
+	ARDOUR_UI::instance()->tooltips().set_tip (envelope_view_button, _("show the gain envelope"));
+	ARDOUR_UI::instance()->tooltips().set_tip (fade_in_active_button, _("use fade in curve during playback"));
+	ARDOUR_UI::instance()->tooltips().set_tip (fade_out_active_button, _("use fade out curve during playback"));
+	ARDOUR_UI::instance()->tooltips().set_tip (audition_button, _("audition this region"));
+
+	mute_button.unset_flags (Gtk::CAN_FOCUS);
+	opaque_button.unset_flags (Gtk::CAN_FOCUS);
+	lock_button.unset_flags (Gtk::CAN_FOCUS);
+	envelope_active_button.unset_flags (Gtk::CAN_FOCUS);
+	envelope_view_button.unset_flags (Gtk::CAN_FOCUS);
+	fade_in_active_button.unset_flags (Gtk::CAN_FOCUS);
+	fade_out_active_button.unset_flags (Gtk::CAN_FOCUS);
+	audition_button.unset_flags (Gtk::CAN_FOCUS);
+	
+	mute_button.set_events (mute_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	opaque_button.set_events (opaque_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	lock_button.set_events (lock_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	envelope_active_button.set_events (envelope_active_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	envelope_view_button.set_events (envelope_view_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	fade_in_active_button.set_events (fade_in_active_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	fade_out_active_button.set_events (fade_out_active_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+	audition_button.set_events (audition_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));
+
+	top_row_button_hbox.set_border_width (5);
+	top_row_button_hbox.set_spacing (5);
+	top_row_button_hbox.set_homogeneous (false);
+	top_row_button_hbox.pack_start (mute_button, false, false);
+	top_row_button_hbox.pack_start (opaque_button, false, false);
+	top_row_button_hbox.pack_start (lock_button, false, false);
+	top_row_button_hbox.pack_start (layer_hbox, false, false, 5);
+	top_row_button_hbox.pack_end (audition_button, false, false);
+	
+	top_row_hbox.pack_start (name_hbox, true, true);
+	top_row_hbox.pack_end (top_row_button_hbox, true, true);
+
+	start_label.set_name ("AudioRegionEditorLabel");
+	start_label.set_text (_("START:"));
+	end_label.set_name ("AudioRegionEditorLabel");
+	end_label.set_text (_("END:"));
+	length_label.set_name ("AudioRegionEditorLabel");
+	length_label.set_text (_("LENGTH:"));
+	
+	time_table.set_col_spacings (2);
+	time_table.set_row_spacings (5);
+	time_table.set_border_width (5);
+
+	start_alignment.set (1.0, 0.5);
+	end_alignment.set (1.0, 0.5);
+	length_alignment.set (1.0, 0.5);
+
+	start_alignment.add (start_label);
+	end_alignment.add (end_label);
+	length_alignment.add (length_label);
+
+	time_table.attach (start_alignment, 0, 1, 0, 1, Gtk::FILL, Gtk::FILL);
+	time_table.attach (start_clock, 1, 2, 0, 1, Gtk::FILL, Gtk::FILL);
+
+	time_table.attach (end_alignment, 0, 1, 1, 2, Gtk::FILL, Gtk::FILL);
+	time_table.attach (end_clock, 1, 2, 1, 2, Gtk::FILL, Gtk::FILL);
+
+	time_table.attach (length_alignment, 0, 1, 2, 3, Gtk::FILL, Gtk::FILL);
+	time_table.attach (length_clock, 1, 2, 2, 3, Gtk::FILL, Gtk::FILL);
+
+	envelope_label.set_name ("AudioRegionEditorLabel");
+
+	envelope_loop_table.set_border_width (5);
+	envelope_loop_table.set_row_spacings (2);
+	envelope_loop_table.attach (envelope_label, 0, 1, 0, 1, Gtk::FILL, Gtk::FILL);
+	envelope_loop_table.attach (envelope_active_button, 0, 1, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+	envelope_loop_table.attach (envelope_view_button, 0, 1, 2, 3, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	/* fade in */
+
+	fade_in_table.set_border_width (5);
+	fade_in_table.set_homogeneous (false);
+
+	fade_in_label.set_name ("AudioRegionEditorLabel");
+	fade_in_active_button_label.set_name ("AudioRegionEditorSmallLabel");
+	fade_in_length_label.set_name ("AudioRegionEditorSmallLabel");
+
+	fade_in_label.set_text (_("FADE IN"));
+	fade_in_active_button_label.set_text (_("active"));
+	fade_in_length_label.set_text (_("msecs"));
+
+	fade_in_active_button.add (fade_in_active_button_label);
+
+	fade_in_length_spinner.set_name("GenericSpinner");
+
+	fade_in_length_spinner.set_digits (3);
+
+	// fade_in_length_spinner.signal_activate().connect (mem_fun(*this, &AudioRegionEditor::activation));
+
+	Gtkmm2ext::set_size_request_to_display_given_text (fade_in_length_spinner, "500g", 20, -1);
+
+	fade_in_label_align.add (fade_in_label);
+	fade_in_label_align.set (0.5);
+
+
+	fade_in_table.attach (fade_in_label_align,   0, 2, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	fade_in_table.attach (fade_in_length_label,   0, 1, 1, 2, Gtk::EXPAND, Gtk::FILL);
+	fade_in_table.attach (fade_in_length_spinner, 0, 1, 2, 3, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	fade_in_table.attach (fade_in_active_button,        0, 2, 3, 5, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	/* fade out */
+
+	fade_out_table.set_border_width (5);
+	fade_out_table.set_homogeneous (false);
+
+	fade_out_label.set_name ("AudioRegionEditorLabel");
+	fade_out_active_button_label.set_name ("AudioRegionEditorSmallLabel");
+	fade_out_length_label.set_name ("AudioRegionEditorSmallLabel");
+
+	fade_out_label.set_text (_("FADE OUT"));
+	fade_out_active_button_label.set_text (_("active"));
+	fade_out_length_label.set_text (_("msecs"));
+
+	fade_out_active_button.add (fade_out_active_button_label);
+
+	fade_out_length_spinner.set_name("GenericSpinner");
+	
+	fade_out_length_spinner.set_digits (3);
+
+	fade_out_length_spinner.signal_activate().connect (mem_fun(*this, &AudioRegionEditor::activation));
+
+	Gtkmm2ext::set_size_request_to_display_given_text (fade_out_length_spinner, "500g", 20, -1);
+
+	fade_out_label_align.add (fade_out_label);
+	fade_out_label_align.set (0.5);
+
+	fade_out_table.attach (fade_out_label_align,   0, 2, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	fade_out_table.attach (fade_out_length_label,   0, 1, 1, 2, Gtk::EXPAND, Gtk::FILL);
+	fade_out_table.attach (fade_out_length_spinner, 0, 1, 2, 3, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	fade_out_table.attach (fade_out_active_button,        0, 2, 3, 5, Gtk::FILL|Gtk::EXPAND, Gtk::FILL);
+
+	lower_hbox.pack_start (time_table, true, true);
+	lower_hbox.pack_start (sep1, false, false);
+	lower_hbox.pack_start (envelope_loop_table, true, true);
+	lower_hbox.pack_start (sep2, false, false);
+	lower_hbox.pack_start (fade_in_table, true, true);
+	lower_hbox.pack_start (fade_out_table, true, true);
+
+	get_vbox()->pack_start (top_row_hbox, true, true);
+	get_vbox()->pack_start (sep3, false, false);
+	get_vbox()->pack_start (lower_hbox, true, true);
+
+	set_name ("AudioRegionEditorWindow");
+	add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
+
+	signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), static_cast<Window *> (this)));
+
+	string title = _("ardour: region ");
+	title += _region.name();
+	set_title (title);
+
+	show_all();
+
+	name_changed ();
+	bounds_changed (Change (StartChanged|LengthChanged|PositionChanged));
+	envelope_active_changed ();
+	mute_changed ();
+	opacity_changed ();
+	lock_changed ();
+	layer_changed ();
+	fade_in_changed ();
+	fade_out_changed ();
+
+	XMLNode *node  = _region.extra_xml ("GUI");
+	XMLProperty *prop = 0;
+	bool showing_envelope = false;
+
+	if (node && (prop = node->property ("envelope-visible")) != 0) {
+		if (prop->value() == "yes") {
+			showing_envelope = true;
+		} 
+	} 
+
+	if (showing_envelope) {
+		envelope_view_button.set_active (true);
+	} else {
+		envelope_view_button.set_active (false);
+	}
+
+	_region.StateChanged.connect (mem_fun(*this, &AudioRegionEditor::region_changed));
+	
+	spin_arrow_grab = false;
+	
+	connect_editor_events ();
+}
+
+AudioRegionEditor::~AudioRegionEditor ()
+{
+}
+
+void
+AudioRegionEditor::region_changed (Change what_changed)
+{
+	if (what_changed & NameChanged) {
+		name_changed ();
+	}
+	if (what_changed & BoundsChanged) {
+		bounds_changed (what_changed);
+	}
+
+	if (what_changed & Region::OpacityChanged) {
+		opacity_changed ();
+	}
+	if (what_changed & Region::MuteChanged) {
+		mute_changed ();
+	}
+	if (what_changed & Region::LockChanged) {
+		lock_changed ();
+	}
+	if (what_changed & Region::LayerChanged) {
+		layer_changed ();
+	}
+
+	if (what_changed & AudioRegion::EnvelopeActiveChanged) {
+		envelope_active_changed ();
+	}
+	if (what_changed & AudioRegion::FadeInChanged) {
+		fade_in_changed ();
+	}
+	if (what_changed & AudioRegion::FadeOutChanged) {
+		fade_out_changed ();
+	}
+	if (what_changed & AudioRegion::FadeInActiveChanged) {
+		fade_in_active_changed ();
+	}
+	if (what_changed & AudioRegion::FadeOutActiveChanged) {
+		fade_out_active_changed ();
+	}
+}
+
+void
+AudioRegionEditor::fade_in_realized ()
+{
+	fade_in_changed ();
+}
+
+void
+AudioRegionEditor::fade_out_realized ()
+{
+	fade_out_changed ();
+}
+
+gint 
+AudioRegionEditor::bpressed (GdkEventButton* ev, Gtk::SpinButton* but, void (AudioRegionEditor::*pmf)())
+{
+	switch (ev->button) {
+	case 1:
+	case 2:
+	case 3:
+		if (ev->type == GDK_BUTTON_PRESS) { /* no double clicks here */
+			if (!spin_arrow_grab) {
+				// GTK2FIX probably nuke the region editor
+				// if ((ev->window == but->gobj()->panel)) {
+				// spin_arrow_grab = true;
+				// (this->*pmf)();
+				// } 
+			} 
+		} 
+		break;
+	default:
+		break;
+	}
+	return FALSE;
+}
+
+gint 
+AudioRegionEditor::breleased (GdkEventButton* ev, Gtk::SpinButton* but, void (AudioRegionEditor::*pmf)())
+{
+	if (spin_arrow_grab) {
+		(this->*pmf)();
+		spin_arrow_grab = false;
+	}
+	return FALSE;
+}
+
+void
+AudioRegionEditor::start_editing_fade_in ()
+{
+	_region.freeze ();
+}
+
+void
+AudioRegionEditor::stop_editing_fade_in ()
+{
+	_region.thaw (_("fade in edit"));
+}
+
+void
+AudioRegionEditor::start_editing_fade_out ()
+{
+	_region.freeze ();
+}
+
+void
+AudioRegionEditor::stop_editing_fade_out ()
+{
+	_region.thaw (_("fade out edit"));
+}
+
+void
+AudioRegionEditor::connect_editor_events ()
+{
+  name_entry.signal_changed().connect (mem_fun(*this, &AudioRegionEditor::name_entry_changed));
+
+	start_clock.ValueChanged.connect (mem_fun(*this, &AudioRegionEditor::start_clock_changed));
+	end_clock.ValueChanged.connect (mem_fun(*this, &AudioRegionEditor::end_clock_changed));
+	length_clock.ValueChanged.connect (mem_fun(*this, &AudioRegionEditor::length_clock_changed));
+
+	fade_in_length_spinner.signal_button_press_event().connect (bind (mem_fun(*this, &AudioRegionEditor::bpressed), &fade_in_length_spinner, 
+								 &AudioRegionEditor::start_editing_fade_in));
+	fade_in_length_spinner.signal_button_release_event().connect (bind (mem_fun (*this, &AudioRegionEditor::breleased), &fade_in_length_spinner, 
+								   &AudioRegionEditor::stop_editing_fade_in));
+
+	fade_out_length_spinner.signal_button_press_event().connect (bind (mem_fun(*this, &AudioRegionEditor::bpressed), &fade_out_length_spinner, 
+								 &AudioRegionEditor::start_editing_fade_out));
+	fade_out_length_spinner.signal_button_release_event().connect (bind (mem_fun (*this, &AudioRegionEditor::breleased), &fade_out_length_spinner, 
+								   &AudioRegionEditor::stop_editing_fade_out));
+
+	fade_in_length_adjustment.signal_value_changed().connect (mem_fun(*this, &AudioRegionEditor::fade_in_length_adjustment_changed));
+	fade_out_length_adjustment.signal_value_changed().connect (mem_fun(*this, &AudioRegionEditor::fade_out_length_adjustment_changed));
+
+	fade_in_active_button.signal_toggled().connect (mem_fun(*this, &AudioRegionEditor::fade_in_active_toggled));
+	fade_out_active_button.signal_toggled().connect (mem_fun(*this, &AudioRegionEditor::fade_out_active_toggled));
+
+	envelope_active_button.signal_button_press_event().connect (mem_fun(*this, &AudioRegionEditor::envelope_active_button_press));
+	envelope_active_button.signal_button_release_event().connect (mem_fun(*this, &AudioRegionEditor::envelope_active_button_release));
+	audition_button.signal_toggled().connect (mem_fun(*this, &AudioRegionEditor::audition_button_toggled));
+	envelope_view_button.signal_toggled().connect (mem_fun(*this, &AudioRegionEditor::envelope_view_button_toggled));
+	lock_button.signal_clicked().connect (mem_fun(*this, &AudioRegionEditor::lock_button_clicked));
+	mute_button.signal_clicked().connect (mem_fun(*this, &AudioRegionEditor::mute_button_clicked));
+	opaque_button.signal_clicked().connect (mem_fun(*this, &AudioRegionEditor::opaque_button_clicked));
+	raise_button.signal_clicked().connect (mem_fun(*this, &AudioRegionEditor::raise_button_clicked));
+	lower_button.signal_clicked().connect (mem_fun(*this, &AudioRegionEditor::lower_button_clicked));
+	_session.AuditionActive.connect (mem_fun(*this, &AudioRegionEditor::audition_state_changed));
+}
+
+void
+AudioRegionEditor::start_clock_changed ()
+{
+	_region.set_position (start_clock.current_time(), this);
+}
+
+void
+AudioRegionEditor::end_clock_changed ()
+{
+	_region.trim_end (end_clock.current_time(), this);
+
+	end_clock.set (_region.position() + _region.length(), true);
+}
+
+void
+AudioRegionEditor::length_clock_changed ()
+{
+	jack_nframes_t frames = length_clock.current_time();
+	_region.trim_end (_region.position() + frames, this);
+
+	length_clock.set (_region.length());
+}
+
+gint
+AudioRegionEditor::envelope_active_button_press(GdkEventButton *ev)
+{
+	return stop_signal (envelope_active_button, "button_press_event");
+}
+
+gint
+AudioRegionEditor::envelope_active_button_release (GdkEventButton *ev)
+{
+	_region.set_envelope_active (!_region.envelope_active());
+	return stop_signal (envelope_active_button, "button_release_event");
+}
+
+void
+AudioRegionEditor::envelope_view_button_toggled ()
+{
+	bool visible = envelope_view_button.get_active ();
+
+	_region_view.set_envelope_visible (visible);
+}
+
+void
+AudioRegionEditor::audition_button_toggled ()
+{
+	if (audition_button.get_active()) {
+		_session.audition_region (_region);
+	} else {
+		_session.cancel_audition ();
+	}
+}
+
+void
+AudioRegionEditor::raise_button_clicked ()
+{
+	_region.raise ();
+}
+
+void
+AudioRegionEditor::lower_button_clicked ()
+{
+	_region.lower ();
+}
+
+void
+AudioRegionEditor::opaque_button_clicked ()
+{
+	bool ractive = _region.opaque();
+
+	if (opaque_button.get_active() != ractive) {
+		_region.set_opaque (!ractive);
+	}
+}
+
+void
+AudioRegionEditor::mute_button_clicked ()
+{
+	bool ractive = _region.muted();
+
+	if (mute_button.get_active() != ractive) {
+		_region.set_muted (!ractive);
+	}
+}
+
+void
+AudioRegionEditor::lock_button_clicked ()
+{
+	bool ractive = _region.locked();
+
+	if (lock_button.get_active() != ractive) {
+		_region.set_locked (!ractive);
+	}
+}
+
+void
+AudioRegionEditor::layer_changed ()
+{
+	char buf[8];
+	snprintf (buf, sizeof(buf), "%d", (int) _region.layer() + 1);
+	layer_value_label.set_text (buf);
+}
+
+void
+AudioRegionEditor::name_changed ()
+{
+	if (name_entry.get_text() != _region.name()) {
+		name_entry.set_text (_region.name());
+	}
+}
+
+void
+AudioRegionEditor::lock_changed ()
+{
+	bool yn;
+
+	if ((yn = _region.locked()) != lock_button.get_active()) {
+		lock_button.set_active (yn);
+	}
+
+	start_clock.set_sensitive (!yn);
+	end_clock.set_sensitive (!yn);
+	length_clock.set_sensitive (!yn);
+}
+
+void
+AudioRegionEditor::envelope_active_changed ()
+{
+	bool yn;
+
+	if ((yn = _region.envelope_active()) != envelope_active_button.get_active()) {
+		envelope_active_button.set_active (yn);
+	}
+}
+
+void
+AudioRegionEditor::opacity_changed ()
+{
+	bool yn;
+	if ((yn = _region.opaque()) != opaque_button.get_active()) {
+		opaque_button.set_active (yn);
+	}
+}
+
+void
+AudioRegionEditor::mute_changed ()
+{
+	bool yn;
+	if ((yn = _region.muted()) != mute_button.get_active()) {
+		mute_button.set_active (yn);
+	}
+}
+
+void
+AudioRegionEditor::bounds_changed (Change what_changed)
+{
+	if (what_changed & Change ((PositionChanged|LengthChanged))) {
+		start_clock.set (_region.position(), true);
+		end_clock.set (_region.position() + _region.length(), true);
+		length_clock.set (_region.length(), true);
+	}
+}
+
+void
+AudioRegionEditor::activation ()
+{
+	
+}	
+
+void
+AudioRegionEditor::name_entry_changed ()
+{
+	if (name_entry.get_text() != _region.name()) {
+		_region.set_name (name_entry.get_text());
+	}
+}
+
+void
+AudioRegionEditor::fade_in_changed ()
+{
+	float msecs = fade_in_length_adjustment.get_value();
+	jack_nframes_t sr = _session.frame_rate();
+	jack_nframes_t adj_frames = (jack_nframes_t) floor (msecs * (sr/1000.0f));
+	jack_nframes_t frames;
+	bool x;
+
+	if (adj_frames != (frames = (jack_nframes_t) _region.fade_in().back()->when)) {
+		fade_in_length_adjustment.set_value ((frames * 1000.0f) / sr);
+	}
+
+	if ((x = _region.fade_in_active()) != fade_in_active_button.get_active()) {
+		fade_in_active_button.set_active (x);
+	}
+}
+
+void
+AudioRegionEditor::fade_out_changed ()
+{
+	float msecs = fade_out_length_adjustment.get_value();
+	jack_nframes_t sr = _session.frame_rate();
+	jack_nframes_t adj_frames = (jack_nframes_t) floor (msecs * (sr/1000.0f));
+	jack_nframes_t frames;
+	bool x;
+	if (adj_frames != (frames = (jack_nframes_t) _region.fade_out().back()->when)) {
+		fade_out_length_adjustment.set_value ((frames * 1000.0f) / sr);
+	}
+
+	if ((x = _region.fade_out_active()) != fade_out_active_button.get_active()) {
+		fade_out_active_button.set_active (x);
+	}
+}
+
+void
+AudioRegionEditor::fade_in_length_adjustment_changed ()
+{
+	jack_nframes_t fade_length = (jack_nframes_t) floor (fade_in_length_adjustment.get_value() * _session.frame_rate() * 0.001); 
+	fade_length = max (fade_length, (jack_nframes_t) 64);
+	fade_length = min (fade_length, _region.length());
+	
+	_region.set_fade_in_length (fade_length);
+	/* region is frozen, no worries */
+	fade_in_changed();
+}
+
+void
+AudioRegionEditor::fade_out_length_adjustment_changed ()
+{
+	jack_nframes_t fade_length = (jack_nframes_t) floor (fade_out_length_adjustment.get_value() * _session.frame_rate() * 0.001); 
+	fade_length = max (fade_length, (jack_nframes_t) 64);
+	fade_length = min (fade_length, _region.length());
+	
+	_region.set_fade_out_length (fade_length);	
+	/* region is frozen, no worries */
+	fade_out_changed();
+}
+
+void
+AudioRegionEditor::fade_in_active_toggled ()
+{
+	_region.set_fade_in_active (fade_in_active_button.get_active());
+}
+
+void
+AudioRegionEditor::fade_out_active_toggled ()
+{
+	_region.set_fade_out_active (fade_out_active_button.get_active());
+}
+
+void
+AudioRegionEditor::fade_out_active_changed ()
+{
+	bool x;
+
+	if ((x = _region.fade_out_active()) != fade_out_active_button.get_active()) {
+		fade_out_active_button.set_active (x);
+	}
+}
+
+void
+AudioRegionEditor::fade_in_active_changed ()
+{
+	bool x;
+
+	if ((x = _region.fade_in_active()) != fade_in_active_button.get_active()) {
+		fade_in_active_button.set_active (x);
+	}
+}
+
+void
+AudioRegionEditor::audition_state_changed (bool yn)
+{
+	ENSURE_GUI_THREAD (bind (mem_fun(*this, &AudioRegionEditor::audition_state_changed), yn));
+
+	if (!yn) {
+		audition_button.set_active (false);
+	}
+}
+