Initial import of gtk2_ardour.

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

1 files changed, 1063 insertions, 0 deletions

diff --git a/gtk2_ardour/mixer_ui.cc b/gtk2_ardour/mixer_ui.cc
new file mode 100644
index 0000000000..e9eae0b3e2
--- /dev/null
+++ b/gtk2_ardour/mixer_ui.cc
@@ -0,0 +1,1063 @@
+/*
+    Copyright (C) 2000-2004 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 <algorithm>
+#include <sigc++/bind.h>
+
+#include <pbd/lockmonitor.h>
+#include <gtkmmext/gtk_ui.h>
+#include <gtkmmext/utils.h>
+#include <gtkmmext/stop_signal.h>
+
+#include <ardour/audioengine.h>
+#include <ardour/session.h>
+#include <ardour/session_route.h>
+#include <ardour/diskstream.h>
+#include <ardour/plugin_manager.h>
+
+#include "mixer_ui.h"
+#include "mixer_strip.h"
+#include "plugin_selector.h"
+#include "ardour_ui.h"
+#include "check_mark.h"
+#include "prompter.h"
+#include "utils.h"
+#include "gui_thread.h"
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace Gtk;
+using namespace Gtkmmext;
+using namespace SigC;
+
+static const gchar* track_display_titles[] = { 
+	N_("Strips"),
+	0
+};
+static const gchar* snapshot_display_titles[] = { 
+	N_("Snapshots"),
+	0
+};
+
+static const gchar* group_list_titles[] = { 
+	N_("***"), 
+	N_("Bar"),
+	0
+};
+
+GdkPixmap* Mixer_UI::check_pixmap = 0;
+GdkBitmap* Mixer_UI::check_mask = 0;
+GdkPixmap* Mixer_UI::empty_pixmap = 0;
+GdkBitmap* Mixer_UI::empty_mask = 0;
+
+
+Mixer_UI::Mixer_UI (AudioEngine& eng)
+	: Gtk::Window (GTK_WINDOW_TOPLEVEL),
+	  KeyboardTarget (*this, "mixer"),
+	  engine (eng),
+	  track_display_list (internationalize (track_display_titles)),
+	  group_list (internationalize (group_list_titles)),
+	  snapshot_display (internationalize (snapshot_display_titles))
+	
+{
+	_strip_width = Wide;
+	track_menu = 0;
+
+	check_pixmap = gdk_pixmap_colormap_create_from_xpm_d (NULL, 
+		      gtk_widget_get_colormap (GTK_WIDGET(group_list.gtkobj())),
+		      &check_mask, NULL, (gchar **) check_xpm);
+	empty_pixmap = gdk_pixmap_colormap_create_from_xpm_d (NULL, 
+		      gtk_widget_get_colormap (GTK_WIDGET(group_list.gtkobj())),
+		      &empty_mask, NULL, (gchar **) empty_xpm);
+
+	XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
+	set_state (*node);
+
+ 	scroller_base.add_events (GDK_BUTTON_PRESS_MASK|GDK_BUTTON_RELEASE_MASK);
+ 	scroller_base.set_name ("MixerWindow");
+ 	scroller_base.button_release_event.connect (slot (*this, &Mixer_UI::strip_scroller_button_release));
+	// add as last item of strip packer
+	strip_packer.pack_end (scroller_base, true, true);
+
+	scroller.add_with_viewport (strip_packer);
+	scroller.set_policy (GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+
+	track_display_list.column_titles_active();
+	track_display_list.set_name ("MixerTrackDisplayList");
+	track_display_list.set_shadow_type (GTK_SHADOW_IN);
+	track_display_list.set_selection_mode (GTK_SELECTION_MULTIPLE);
+	track_display_list.set_reorderable (true);
+	track_display_list.set_usize (75, -1);
+	track_display_scroller.add (track_display_list);
+	track_display_scroller.set_policy (GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+
+	snapshot_display.column_titles_active();
+	snapshot_display.set_name ("MixerSnapshotDisplayList");
+	snapshot_display.set_shadow_type (GTK_SHADOW_IN);
+	snapshot_display.set_selection_mode (GTK_SELECTION_SINGLE);
+	snapshot_display.set_reorderable (true);
+	snapshot_display.set_usize (75, -1);
+	snapshot_display_scroller.add (snapshot_display);
+	snapshot_display_scroller.set_policy (GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+
+	group_list_button_label.set_text (_("Mix Groups"));
+	group_list_button_label.set_name ("MixerGroupTitleButton");
+	group_list_button.add (group_list_button_label);
+	group_list_button.set_name ("MixerGroupTitleButton");
+
+	group_list.column_titles_hide();
+	group_list.set_name ("MixerGroupList");
+	group_list.set_shadow_type (GTK_SHADOW_IN);
+	group_list.set_selection_mode (GTK_SELECTION_MULTIPLE);
+	group_list.set_reorderable (false);
+	group_list.set_usize (75, -1);
+	group_list.set_column_auto_resize (0, true);
+	group_list_scroller.add (group_list);
+	group_list_scroller.set_policy (GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+	
+	group_list_vbox.pack_start (group_list_button, false, false);
+	group_list_vbox.pack_start (group_list_scroller, true, true);
+
+	list<string> stupid_list;
+
+	stupid_list.push_back ("");
+	stupid_list.push_back (_("-all-"));
+
+	group_list.rows().push_back (stupid_list);
+	group_list.rows().back().set_data (0);
+	group_list.rows().back().select();
+	group_list.cell(0,0).set_pixmap (check_pixmap);
+
+	track_display_frame.set_name("BaseFrame");
+	track_display_frame.set_shadow_type (GTK_SHADOW_IN);
+	track_display_frame.add(track_display_scroller);
+
+	group_list_frame.set_name ("BaseFrame");
+	group_list_frame.set_shadow_type (GTK_SHADOW_IN);
+	group_list_frame.add (group_list_vbox);
+
+	rhs_pane1.add1 (track_display_frame);
+	rhs_pane1.add2 (rhs_pane2);
+
+	rhs_pane2.add1 (group_list_frame);
+	rhs_pane2.add2 (snapshot_display_scroller);
+
+	list_vpacker.pack_start (rhs_pane1, true, true);
+
+	global_hpacker.pack_start (scroller, true, true);
+	global_hpacker.pack_start (out_packer, false, false);
+
+	list_hpane.add1(list_vpacker);
+	list_hpane.add2(global_hpacker);
+
+	rhs_pane1.size_allocate.connect_after (bind (slot (*this, &Mixer_UI::pane_allocation_handler), 
+						      static_cast<Gtk::Paned*> (&rhs_pane1)));
+	rhs_pane2.size_allocate.connect_after (bind (slot (*this, &Mixer_UI::pane_allocation_handler), 
+						      static_cast<Gtk::Paned*> (&rhs_pane2)));
+	list_hpane.size_allocate.connect_after (bind (slot (*this, &Mixer_UI::pane_allocation_handler), 
+						      static_cast<Gtk::Paned*> (&list_hpane)));
+
+
+	rhs_pane1.set_data ("collapse-direction", (gpointer) 0);
+	rhs_pane2.set_data ("collapse-direction", (gpointer) 0);
+	list_hpane.set_data ("collapse-direction", (gpointer) 1);
+
+	rhs_pane1.button_release_event.connect (bind (slot (pane_handler), static_cast<Paned*>(&rhs_pane1)));
+	rhs_pane2.button_release_event.connect (bind (slot (pane_handler), static_cast<Paned*>(&rhs_pane2)));
+	list_hpane.button_release_event.connect (bind (slot (pane_handler), static_cast<Paned*>(&list_hpane)));
+	
+	global_vpacker.pack_start (list_hpane, true, true);
+
+	add (global_vpacker);
+	set_name ("MixerWindow");
+	set_title (_("ardour: mixer"));
+	set_wmclass (_("ardour_mixer"), "Ardour");
+
+	delete_event.connect (bind (slot (just_hide_it), 
+						    static_cast<Gtk::Window *>(this)));
+	add_events (GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK);
+
+	snapshot_display.select_row.connect (slot (*this, &Mixer_UI::snapshot_display_selected));
+
+	track_display_list.select_row.connect (slot (*this, &Mixer_UI::track_display_selected));
+	track_display_list.unselect_row.connect (slot (*this, &Mixer_UI::track_display_unselected));
+	track_display_list.row_move.connect (slot (*this, &Mixer_UI::queue_track_display_reordered));
+	track_display_list.click_column.connect (slot (*this, &Mixer_UI::track_column_click));
+
+	group_list_button.clicked.connect (slot (*this, &Mixer_UI::group_list_button_clicked));
+	group_list.button_press_event.connect (slot (*this, &Mixer_UI::group_list_button_press_event));
+	group_list.select_row.connect (slot (*this, &Mixer_UI::group_selected));
+	group_list.unselect_row.connect (slot (*this, &Mixer_UI::group_unselected));
+
+	_plugin_selector = new PluginSelector (PluginManager::the_manager());
+	_plugin_selector->delete_event.connect (bind (slot (just_hide_it), 
+						     static_cast<Window *> (_plugin_selector)));
+
+	configure_event.connect (slot (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
+
+	_selection.RoutesChanged.connect (slot (*this, &Mixer_UI::follow_strip_selection));
+}
+
+Mixer_UI::~Mixer_UI ()
+{
+}
+
+void
+Mixer_UI::ensure_float (Window& win)
+{
+	win.set_transient_for (*this);
+}
+
+void
+Mixer_UI::show_window ()
+{
+	show_all ();
+
+	/* now reset each strips width so the right widgets are shown */
+	MixerStrip* ms;
+	CList_Helpers::RowList::iterator i;
+
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		ms = (MixerStrip *) i->get_data ();
+		ms->set_width (ms->get_width());
+	}
+}
+
+void
+Mixer_UI::add_strip (Route* route)
+{
+	ENSURE_GUI_THREAD(bind (slot (*this, &Mixer_UI::add_strip), route));
+	
+	MixerStrip* strip;
+	
+	if (route->hidden()) {
+		return;
+	}
+
+	strip = new MixerStrip (*this, *session, *route);
+	strips.push_back (strip);
+
+	strip->set_width (_strip_width);
+	show_strip (strip);
+
+	const gchar* rowdata[1];
+	rowdata[0] = route->name().c_str();
+	
+	track_display_list.freeze ();
+	track_display_list.rows().push_back (rowdata);
+	track_display_list.rows().back().set_data (strip);
+	track_display_list.thaw ();
+
+	if (strip->marked_for_display() || strip->packed()) {
+		track_display_list.rows().back().select ();
+	}
+	
+	route->name_changed.connect (bind (slot (*this, &Mixer_UI::strip_name_changed), strip));
+	strip->GoingAway.connect (bind (slot (*this, &Mixer_UI::remove_strip), strip));
+
+	strip->button_release_event.connect (bind (slot (*this, &Mixer_UI::strip_button_release_event), strip));
+
+//	if (width() < gdk_screen_width()) {
+//		set_usize (width() + (_strip_width == Wide ? 75 : 50), height());
+//	}
+}
+
+void
+Mixer_UI::remove_strip (MixerStrip* strip)
+{
+	ENSURE_GUI_THREAD(bind (slot (*this, &Mixer_UI::remove_strip), strip));
+	
+	CList_Helpers::RowList::iterator ri;
+	list<MixerStrip *>::iterator i;
+
+	if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
+		strips.erase (i);
+	}
+
+	for (ri = track_display_list.rows().begin(); ri != track_display_list.rows().end(); ++ri) {
+		if ((MixerStrip *) ri->get_data () == strip) {
+			track_display_list.rows().erase (ri);
+			break;
+		}
+	}
+}
+
+void
+Mixer_UI::follow_strip_selection ()
+{
+	for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+		(*i)->set_selected (_selection.selected (&(*i)->route()));
+	}
+}
+
+gint
+Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
+{
+	if (ev->button == 1) {
+
+		/* this allows the user to click on the strip to terminate comment
+		   editing. XXX it needs improving so that we don't select the strip
+		   at the same time.
+		*/
+		
+		ARDOUR_UI::instance()->allow_focus (false);
+		
+		if (_selection.selected (&strip->route())) {
+			_selection.remove (&strip->route());
+		} else {
+			if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
+				_selection.add (&strip->route());
+			} else {
+				_selection.set (&strip->route());
+			}
+		}
+	}
+
+	return TRUE;
+}
+
+void
+Mixer_UI::connect_to_session (Session* sess)
+{
+	session = sess;
+
+	string wintitle = _("ardour: mixer: ");
+	wintitle += session->name();
+	set_title (wintitle);
+
+	track_display_list.freeze ();
+	track_display_list.clear ();
+
+	session->foreach_route (this, &Mixer_UI::add_strip);
+	
+	track_display_list.thaw ();
+
+	session->going_away.connect (slot (*this, &Mixer_UI::disconnect_from_session));
+	session->RouteAdded.connect (slot (*this, &Mixer_UI::add_strip));
+	session->mix_group_added.connect (slot (*this, &Mixer_UI::add_mix_group));
+
+	session->foreach_mix_group(this, &Mixer_UI::add_mix_group);
+	
+	session->StateSaved.connect (slot (*this, &Mixer_UI::session_state_saved));
+	redisplay_snapshots ();
+	
+	_plugin_selector->set_session (session);
+
+	start_updating ();
+}
+
+void
+Mixer_UI::disconnect_from_session ()
+{
+	ENSURE_GUI_THREAD(slot (*this, &Mixer_UI::disconnect_from_session));
+	
+	group_list.clear ();
+	set_title (_("ardour: mixer"));
+	stop_updating ();
+	hide_all_strips (false);
+}
+
+void
+Mixer_UI::hide_all_strips (bool with_select)
+{
+	MixerStrip* ms;
+	CList_Helpers::RowList::iterator i;
+
+	track_display_list.freeze ();
+	
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		ms = (MixerStrip *) i->get_data ();
+
+		if (with_select) {
+			i->unselect ();
+		} else {
+			hide_strip (ms);
+		}
+	}
+
+	track_display_list.thaw ();
+}
+
+void
+Mixer_UI::unselect_all_strips ()
+{
+	hide_all_strips (false);
+}
+
+void
+Mixer_UI::select_all_strips ()
+{
+	CList_Helpers::RowList::iterator i;
+
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		i->select ();
+	}
+}
+
+void
+Mixer_UI::select_all_audiotrack_strips ()
+{
+	MixerStrip* ms;
+	CList_Helpers::RowList::iterator i;
+
+	track_display_list.freeze ();
+	
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		ms = (MixerStrip *) i->get_data ();
+
+		if (ms->is_audio_track()) {
+			i->select ();
+		}
+	}
+	
+	track_display_list.thaw ();	
+}
+
+void
+Mixer_UI::unselect_all_audiotrack_strips ()
+{
+	MixerStrip* ms;
+	CList_Helpers::RowList::iterator i;
+
+	track_display_list.freeze ();
+	
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		ms = (MixerStrip *) i->get_data ();
+
+		if (ms->is_audio_track()) {
+			i->unselect ();
+		}
+	}
+	
+	track_display_list.thaw ();	
+}
+
+void
+Mixer_UI::select_all_audiobus_strips ()
+{
+	MixerStrip* ms;
+	CList_Helpers::RowList::iterator i;
+
+	track_display_list.freeze ();
+	
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		ms = (MixerStrip *) i->get_data ();
+
+		if (!ms->is_audio_track()) {
+			i->select ();
+		}
+	}
+	
+	track_display_list.thaw ();
+}
+
+void
+Mixer_UI::unselect_all_audiobus_strips ()
+{
+	MixerStrip* ms;
+	CList_Helpers::RowList::iterator i;
+
+	track_display_list.freeze ();
+	
+	for (i = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i) {
+		ms = (MixerStrip *) i->get_data ();
+
+		if (!ms->is_audio_track()) {
+			i->unselect ();
+		}
+	}
+	
+	track_display_list.thaw ();
+}
+
+void
+Mixer_UI::show_strip (MixerStrip* ms)
+{
+	if (!ms->packed()) {
+		
+		if (ms->route().master() || ms->route().control()) {
+			out_packer.pack_start (*ms, false, false);
+		} else {
+			strip_packer.pack_start (*ms, false, false);
+		}
+		ms->set_packed (true);
+		ms->show ();
+
+	}
+}
+
+void
+Mixer_UI::hide_strip (MixerStrip* ms)
+{
+	if (ms->packed()) {
+		if (ms->route().master() || ms->route().control()) {
+			out_packer.remove (*ms);
+		} else {
+			strip_packer.remove (*ms);
+		}
+		ms->set_packed (false);
+	}
+}
+
+gint
+Mixer_UI::start_updating ()
+{
+	screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect (slot (*this, &Mixer_UI::update_strips));
+	fast_screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (slot (*this, &Mixer_UI::fast_update_strips));
+	return 0;
+}
+
+gint
+Mixer_UI::stop_updating ()
+{
+	screen_update_connection.disconnect();
+	fast_screen_update_connection.disconnect();
+	return 0;
+}
+
+void
+Mixer_UI::update_strips ()
+{
+	if (is_mapped () && session) {
+		for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+			(*i)->update ();
+		}
+	}
+}
+
+void
+Mixer_UI::fast_update_strips ()
+{
+	if (is_mapped () && session) {
+		for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+			(*i)->fast_update ();
+		}
+	}
+}
+
+void
+Mixer_UI::snapshot_display_selected (gint row, gint col, GdkEvent* ev)
+{
+	string* snap_name;
+	
+	if ((snap_name = (string*) snapshot_display.get_row_data(row)) != 0){
+		if (session->snap_name() == *snap_name){
+			return;
+		}
+		string path = session->path();
+		ARDOUR_UI::instance()->load_session(path, *snap_name);
+	}
+}
+
+void
+Mixer_UI::track_display_selected (gint row, gint col, GdkEvent* ev)
+{
+	MixerStrip* strip;
+
+	if ((strip = (MixerStrip *) track_display_list.get_row_data (row)) != 0) {
+		strip->set_marked_for_display  (true);
+		show_strip (strip);
+
+		/* just redraw the whole thing so that we get the right order
+		   when we reinsert the strip.
+		*/
+		
+		track_display_reordered ();
+	}
+}
+
+void
+Mixer_UI::track_display_unselected (gint row, gint col, GdkEvent* ev)
+{
+	MixerStrip* strip;
+
+	if ((strip = (MixerStrip *) track_display_list.get_row_data (row)) != 0) {
+		strip->set_marked_for_display (false);
+		hide_strip (strip);
+	}
+}
+
+void
+Mixer_UI::unselect_strip_in_display (MixerStrip *strip)
+{
+	CList_Helpers::RowIterator i;
+
+	if ((i = track_display_list.rows().find_data (strip)) != track_display_list.rows().end()) {
+		(*i).unselect ();
+	}
+}
+
+void
+Mixer_UI::select_strip_in_display (MixerStrip *strip)
+{
+	CList_Helpers::RowIterator i;
+
+	if ((i = track_display_list.rows().find_data (strip)) != track_display_list.rows().end()) {
+		(*i).select ();
+	}
+}
+
+void
+Mixer_UI::queue_track_display_reordered (gint arg1, gint arg2)
+{
+	/* the problem here is that we are called *before* the
+	   list has been reordered. so just queue up
+	   the actual re-drawer to happen once the re-ordering
+	   is complete.
+	*/
+
+	Main::idle.connect (slot (*this, &Mixer_UI::track_display_reordered));
+}
+
+int
+Mixer_UI::track_display_reordered ()
+{
+	CList_Helpers::RowList::iterator i;
+	long order;
+
+	// hide_all_strips (false);
+
+	for (order = 0, i  = track_display_list.rows().begin(); i != track_display_list.rows().end(); ++i, ++order) {
+		MixerStrip* strip = (MixerStrip *) (*i)->get_data ();
+		if (strip->marked_for_display()) {
+			strip->route().set_order_key (N_("signal"), order);
+			strip_packer.reorder_child (*strip, -1); /* put at end */
+		}
+	}
+
+	return FALSE;
+}
+
+void
+Mixer_UI::track_column_click (gint col)
+{
+	if (track_menu == 0) {
+		build_track_menu ();
+	}
+
+	track_menu->popup (0, 0);
+}
+
+void
+Mixer_UI::build_track_menu ()
+{
+	using namespace Menu_Helpers;
+	using namespace Gtk;
+
+	track_menu = new Menu;
+	track_menu->set_name ("ArdourContextMenu");
+	MenuList& items = track_menu->items();
+	track_menu->set_name ("ArdourContextMenu");
+	
+	items.push_back (MenuElem (_("Show All"), slot (*this, &Mixer_UI::select_all_strips)));
+	items.push_back (MenuElem (_("Hide All"), slot (*this, &Mixer_UI::unselect_all_strips)));
+	items.push_back (MenuElem (_("Show All AudioTrack MixerStrips"), slot (*this, &Mixer_UI::select_all_audiotrack_strips)));
+	items.push_back (MenuElem (_("Hide All AudioTrack MixerStrips"), slot (*this, &Mixer_UI::unselect_all_audiotrack_strips)));
+	items.push_back (MenuElem (_("Show All AudioBus MixerStrips"), slot (*this, &Mixer_UI::select_all_audiobus_strips)));
+	items.push_back (MenuElem (_("Hide All AudioBus MixerStrips"), slot (*this, &Mixer_UI::unselect_all_audiobus_strips)));
+
+}
+
+void
+Mixer_UI::strip_name_changed (void* src, MixerStrip* mx)
+{
+	ENSURE_GUI_THREAD(bind (slot (*this, &Mixer_UI::strip_name_changed), src, mx));
+	
+	CList_Helpers::RowList::iterator i;
+
+	if ((i = track_display_list.rows().find_data (mx)) == track_display_list.rows().end()) {
+		error << _("track display list item for renamed strip not found!") << endmsg;
+		return;
+	}
+
+	track_display_list.cell ((*i)->get_row_num(), 0).set_text (mx->route().name());
+}
+
+void
+Mixer_UI::new_mix_group ()
+{
+	ArdourPrompter prompter;
+	string result;
+
+	prompter.set_prompt (_("Name for new mix group"));
+	prompter.done.connect (Main::quit.slot());
+
+	prompter.show_all ();
+	
+	Main::run ();
+	
+	if (prompter.status != Gtkmmext::Prompter::entered) {
+		return;
+	}
+	
+	prompter.get_result (result);
+
+	if (result.length()) {
+		session->add_mix_group (result);
+	}
+}
+
+void
+Mixer_UI::group_list_button_clicked ()
+{
+	if (session) {
+		new_mix_group ();
+	}
+}
+
+gint
+Mixer_UI::group_list_button_press_event (GdkEventButton* ev)
+{
+	gint row, col;
+	RouteGroup* group;
+
+	if (group_list.get_selection_info ((int)ev->x, (int)ev->y, &row, &col) == 0) {
+		return FALSE;
+	}
+
+	switch (col) {
+	case 1:
+		if (Keyboard::is_edit_event (ev)) {
+			// RouteGroup* group = (RouteGroup *) group_list.row(row).get_data ();
+
+			// edit_mix_group (group);
+
+			return stop_signal (group_list, "button_press_event");
+
+		} else {
+			/* allow regular select to occur */
+			return FALSE;
+		}
+
+	case 0:
+		stop_signal (group_list, "button_press_event");
+		if ((group = (RouteGroup *) group_list.row(row).get_data ()) != 0) {
+			group->set_active (!group->is_active (), this);
+		}
+		break;
+	}
+		
+	return TRUE;
+}
+
+void
+Mixer_UI::group_selected (gint row, gint col, GdkEvent* ev)
+{
+	RouteGroup* group = (RouteGroup *) group_list.row(row).get_data ();
+
+	if (group) {
+		group->set_hidden (false, this);
+	} else {
+		/* the master group */
+
+		for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+			show_strip (*i);
+		}
+
+		track_display_reordered ();
+	}
+}
+
+void
+Mixer_UI::group_unselected (gint row, gint col, GdkEvent* ev)
+
+{
+	RouteGroup* group = (RouteGroup *) group_list.row(row).get_data ();
+
+	if (group) {
+		group->set_hidden (true, this);
+	} else {
+		/* the master group */
+
+		for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+			hide_strip (*i);
+		}
+	}
+}
+
+void
+Mixer_UI::group_flags_changed (void* src, RouteGroup* group)
+{
+	ENSURE_GUI_THREAD(bind (slot (*this, &Mixer_UI::group_flags_changed), src, group));
+	
+	if (src != this) {
+		// select row
+	}
+
+	CList_Helpers::RowIterator ri = group_list.rows().find_data (group);
+
+	for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+		if ((*i)->route().mix_group() == group) {
+			if (group->is_hidden ()) {
+				unselect_strip_in_display(*i);
+			} else {
+				select_strip_in_display(*i);
+				(*ri)->select();
+			}
+		}
+	}
+
+	if (group->is_active()) {
+		group_list.cell (ri->get_row_num(),0).set_pixmap (check_pixmap, check_mask);
+	} else {
+		group_list.cell (ri->get_row_num(),0).set_pixmap (empty_pixmap, empty_mask);
+	}
+}
+
+void
+Mixer_UI::add_mix_group (RouteGroup* group)
+
+{
+	ENSURE_GUI_THREAD(bind (slot (*this, &Mixer_UI::add_mix_group), group));
+	
+	list<string> names;
+
+	names.push_back ("");
+	names.push_back (group->name());
+
+	group_list.rows().push_back (names);
+	group_list.rows().back().set_data (group);
+	
+	/* update display to reflect group flags */
+
+	group_flags_changed (0, group);
+
+	group->FlagsChanged.connect (bind (slot (*this, &Mixer_UI::group_flags_changed), group));
+}
+
+void
+Mixer_UI::redisplay_snapshots ()
+{
+	if (session == 0) {
+		return;
+	}
+
+	vector<string*>* states;
+	if ((states = session->possible_states()) == 0) {
+		return;
+	}
+
+	snapshot_display.freeze();
+	snapshot_display.rows().clear ();
+	
+	for (vector<string*>::iterator i = states->begin(); i != states->end(); ++i) {
+		string statename = *(*i);
+		const char *rowtext[1];
+
+		rowtext[0] = statename.c_str();
+
+		snapshot_display.rows().push_back (rowtext);
+		snapshot_display.rows().back().set_data (new string (statename), deferred_delete<string>);
+
+		delete *i;
+	}
+
+	delete states;
+	snapshot_display.thaw();
+}
+
+void
+Mixer_UI::session_state_saved (string snap_name)
+{
+	ENSURE_GUI_THREAD (bind (slot (*this, &Mixer_UI::session_state_saved), snap_name));
+	redisplay_snapshots ();
+}
+
+gint
+Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
+{
+	using namespace Menu_Helpers;
+
+	if (Keyboard::is_context_menu_event (ev)) {
+		ARDOUR_UI::instance()->add_route();
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+void
+Mixer_UI::set_strip_width (Width w)
+{
+	_strip_width = w;
+
+	for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
+		(*i)->set_width (w);
+	}
+}
+
+
+int
+Mixer_UI::set_state (const XMLNode& node)
+{
+	const XMLProperty* prop;
+	XMLNode* geometry;
+	int x, y, width, height, xoff, yoff;
+	
+	if ((geometry = find_named_node (node, "geometry")) == 0) {
+
+		width = default_width;
+		height = default_height;
+		x = 1;
+		y = 1;
+		xoff = 0;
+		yoff = 21;
+
+	} else {
+
+		width = atoi(geometry->property("x_size")->value().c_str());
+		height = atoi(geometry->property("y_size")->value().c_str());
+		x = atoi(geometry->property("x_pos")->value().c_str());
+		y = atoi(geometry->property("y_pos")->value().c_str());
+		xoff = atoi(geometry->property("x_off")->value().c_str());
+		yoff = atoi(geometry->property("y_off")->value().c_str());
+	}
+		
+	set_default_size(width, height);
+	set_uposition(x, y-yoff);
+
+	if ((prop = node.property ("narrow-strips"))) {
+		if (prop->value() == "yes") {
+			set_strip_width (Narrow);
+		} else {
+			set_strip_width (Wide);
+		}
+	}
+
+	return 0;
+}
+
+XMLNode&
+Mixer_UI::get_state (void)
+{
+	XMLNode* node = new XMLNode ("Mixer");
+
+	if (is_realized()) {
+		Gdk_Window win = get_window();
+		
+		int x, y, xoff, yoff, width, height;
+		win.get_root_origin(x, y);
+		win.get_position(xoff, yoff);
+		win.get_size(width, height);
+
+		XMLNode* geometry = new XMLNode ("geometry");
+		char buf[32];
+		snprintf(buf, sizeof(buf), "%d", width);
+		geometry->add_property(X_("x_size"), string(buf));
+		snprintf(buf, sizeof(buf), "%d", height);
+		geometry->add_property(X_("y_size"), string(buf));
+		snprintf(buf, sizeof(buf), "%d", x);
+		geometry->add_property(X_("x_pos"), string(buf));
+		snprintf(buf, sizeof(buf), "%d", y);
+		geometry->add_property(X_("y_pos"), string(buf));
+		snprintf(buf, sizeof(buf), "%d", xoff);
+		geometry->add_property(X_("x_off"), string(buf));
+		snprintf(buf, sizeof(buf), "%d", yoff);
+		geometry->add_property(X_("y_off"), string(buf));
+
+		snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gtkobj()));
+		geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
+		snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane2)->gtkobj()));
+		geometry->add_property(X_("mixer_rhs_pane2_pos"), string(buf));
+		snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gtkobj()));
+		geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
+
+		node->add_child_nocopy (*geometry);
+	}
+
+	node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
+
+	return *node;
+}
+
+
+void 
+Mixer_UI::pane_allocation_handler (GtkAllocation *alloc, Gtk::Paned* which)
+{
+	int pos;
+	XMLProperty* prop = 0;
+	char buf[32];
+	XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
+	XMLNode* geometry;
+	int width, height;
+	static int32_t done[3] = { 0, 0, 0 };
+
+	if ((geometry = find_named_node (*node, "geometry")) == 0) {
+		width = default_width;
+		height = default_height;
+	} else {
+		width = atoi(geometry->property("x_size")->value());
+		height = atoi(geometry->property("y_size")->value());
+	}
+
+	if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
+
+		if (done[0]) {
+			return;
+		}
+
+		if (!geometry || (prop = geometry->property("mixer_rhs_pane1_pos")) == 0) {
+			pos = height / 3;
+			snprintf (buf, sizeof(buf), "%d", pos);
+		} else {
+			pos = atoi (prop->value());
+		}
+
+		if ((done[0] = GTK_WIDGET(rhs_pane1.gtkobj())->allocation.height > pos)) {
+			rhs_pane1.set_position (pos);
+		}
+
+	} else if (which == static_cast<Gtk::Paned*> (&rhs_pane2)) {
+
+		if (done[1]) {
+			return;
+		}
+
+		if (!geometry || (prop = geometry->property("mixer_rhs_pane2_pos")) == 0) {
+			pos = height / 3;
+			snprintf (buf, sizeof(buf), "%d", pos);
+		} else {
+			pos = atoi (prop->value());
+		}
+
+		if ((done[1] = GTK_WIDGET(rhs_pane2.gtkobj())->allocation.height > pos)) {
+			rhs_pane2.set_position (pos);
+		}
+
+	} else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
+
+		if (done[2]) {
+			return;
+		}
+
+		if (!geometry || (prop = geometry->property("mixer_list_hpane_pos")) == 0) {
+			pos = 75;
+			snprintf (buf, sizeof(buf), "%d", pos);
+		} else {
+			pos = atoi (prop->value());
+		}
+
+		if ((done[2] = GTK_WIDGET(list_hpane.gtkobj())->allocation.width > pos)) {
+			list_hpane.set_position (pos);
+		}
+	}
+}
+