2 Copyright (C) 2000-2004 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "gtk2ardour-config.h"
26 #include <sigc++/bind.h>
28 #include <gtkmm/accelmap.h>
30 #include "pbd/convert.h"
31 #include "pbd/unwind.h"
33 #include <glibmm/threads.h>
35 #include <gtkmm2ext/gtk_ui.h>
36 #include <gtkmm2ext/utils.h>
37 #include <gtkmm2ext/tearoff.h>
38 #include <gtkmm2ext/window_title.h>
40 #include "ardour/debug.h"
41 #include "ardour/midi_track.h"
42 #include "ardour/plugin_manager.h"
43 #include "ardour/route_group.h"
44 #include "ardour/session.h"
48 #include "mixer_strip.h"
49 #include "monitor_section.h"
50 #include "plugin_selector.h"
51 #include "public_editor.h"
52 #include "ardour_ui.h"
55 #include "route_sorter.h"
57 #include "gui_thread.h"
58 #include "mixer_group_tabs.h"
62 using namespace ARDOUR;
66 using namespace Gtkmm2ext;
72 Mixer_UI* Mixer_UI::_instance = 0;
78 _instance = new Mixer_UI;
85 : Window (Gtk::WINDOW_TOPLEVEL)
86 , VisibilityTracker (*((Gtk::Window*) this))
88 , no_track_list_redisplay (false)
89 , in_group_row_change (false)
91 , _monitor_section (0)
92 , _strip_width (Config->get_default_narrow_ms() ? Narrow : Wide)
93 , ignore_reorder (false)
94 , _following_editor_selection (false)
96 /* allow this window to become the key focus window */
97 set_flags (CAN_FOCUS);
99 Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
101 scroller.set_can_default (true);
102 set_default (scroller);
104 scroller_base.set_flags (Gtk::CAN_FOCUS);
105 scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
106 scroller_base.set_name ("MixerWindow");
107 scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
108 // add as last item of strip packer
109 strip_packer.pack_end (scroller_base, true, true);
111 _group_tabs = new MixerGroupTabs (this);
112 VBox* b = manage (new VBox);
113 b->pack_start (*_group_tabs, PACK_SHRINK);
114 b->pack_start (strip_packer);
118 scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
120 setup_track_display ();
122 group_model = ListStore::create (group_columns);
123 group_display.set_model (group_model);
124 group_display.append_column (_("Group"), group_columns.text);
125 group_display.append_column (_("Show"), group_columns.visible);
126 group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
127 group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
128 group_display.get_column (0)->set_expand(true);
129 group_display.get_column (1)->set_expand(false);
130 group_display.set_name ("EditGroupList");
131 group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
132 group_display.set_reorderable (true);
133 group_display.set_headers_visible (true);
134 group_display.set_rules_hint (true);
136 /* name is directly editable */
138 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
139 name_cell->property_editable() = true;
140 name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
142 /* use checkbox for the active column */
144 CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
145 active_cell->property_activatable() = true;
146 active_cell->property_radio() = false;
148 group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
149 /* We use this to notice drag-and-drop reorders of the group list */
150 group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
151 group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
153 group_display_scroller.add (group_display);
154 group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
156 HBox* route_group_display_button_box = manage (new HBox());
158 Button* route_group_add_button = manage (new Button ());
159 Button* route_group_remove_button = manage (new Button ());
163 w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
165 route_group_add_button->add (*w);
167 w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
169 route_group_remove_button->add (*w);
171 route_group_display_button_box->set_homogeneous (true);
173 route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
174 route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
176 route_group_display_button_box->add (*route_group_add_button);
177 route_group_display_button_box->add (*route_group_remove_button);
179 group_display_vbox.pack_start (group_display_scroller, true, true);
180 group_display_vbox.pack_start (*route_group_display_button_box, false, false);
182 group_display_frame.set_name ("BaseFrame");
183 group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
184 group_display_frame.add (group_display_vbox);
186 rhs_pane1.pack1 (track_display_frame);
187 rhs_pane1.pack2 (group_display_frame);
189 list_vpacker.pack_start (rhs_pane1, true, true);
191 global_hpacker.pack_start (scroller, true, true);
193 /* current gtk-quartz has dirty updates on borders like this one */
194 global_hpacker.pack_start (out_packer, false, false, 0);
196 global_hpacker.pack_start (out_packer, false, false, 12);
198 list_hpane.pack1(list_vpacker, true, true);
199 list_hpane.pack2(global_hpacker, true, false);
201 rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
202 static_cast<Gtk::Paned*> (&rhs_pane1)));
203 list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
204 static_cast<Gtk::Paned*> (&list_hpane)));
206 global_vpacker.pack_start (list_hpane, true, true);
208 add (global_vpacker);
209 set_name ("MixerWindow");
213 set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
215 signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
216 add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
218 signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
220 route_group_display_button_box->show();
221 route_group_add_button->show();
222 route_group_remove_button->show();
224 global_hpacker.show();
225 global_vpacker.show();
227 scroller_base.show();
228 scroller_hpacker.show();
229 mixer_scroller_vpacker.show();
231 group_display_button_label.show();
232 group_display_button.show();
233 group_display_scroller.show();
234 group_display_vbox.show();
235 group_display_frame.show();
240 group_display.show();
242 _in_group_rebuild_or_clear = false;
245 MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
247 MonitorSection::setup_knob_images ();
249 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
250 _plugin_selector = new PluginSelector (PluginManager::instance ());
254 Mixer_UI::~Mixer_UI ()
256 if (_monitor_section) {
257 delete _monitor_section;
262 Mixer_UI::track_editor_selection ()
264 PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
269 Mixer_UI::ensure_float (Window& win)
271 win.set_transient_for (*this);
275 Mixer_UI::show_window ()
279 set_window_pos_and_size ();
281 /* show/hide group tabs as required */
282 parameter_changed ("show-group-tabs");
284 /* now reset each strips width so the right widgets are shown */
287 TreeModel::Children rows = track_model->children();
288 TreeModel::Children::iterator ri;
290 for (ri = rows.begin(); ri != rows.end(); ++ri) {
291 ms = (*ri)[track_columns.strip];
292 ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
293 /* Fix visibility of mixer strip stuff */
294 ms->parameter_changed (X_("mixer-strip-visibility"));
298 /* force focus into main area */
299 scroller_base.grab_focus ();
305 Mixer_UI::hide_window (GdkEventAny *ev)
307 get_window_pos_and_size ();
310 return just_hide_it(ev, static_cast<Gtk::Window *>(this));
315 Mixer_UI::add_strips (RouteList& routes)
317 bool from_scratch = track_model->children().size() == 0;
318 Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
320 for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
321 boost::shared_ptr<Route> r = (*it)[track_columns.route];
323 if (r->order_key() == (routes.front()->order_key() + routes.size())) {
330 _selection.clear_routes ();
336 no_track_list_redisplay = true;
337 track_display.set_model (Glib::RefPtr<ListStore>());
339 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
340 boost::shared_ptr<Route> route = (*x);
342 if (route->is_auditioner()) {
346 if (route->is_monitor()) {
348 if (!_monitor_section) {
349 _monitor_section = new MonitorSection (_session);
351 XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
353 _monitor_section->tearoff().set_state (*mnode);
357 out_packer.pack_end (_monitor_section->tearoff(), false, false);
358 _monitor_section->set_session (_session);
359 _monitor_section->tearoff().show_all ();
361 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
363 /* no regular strip shown for control out */
368 strip = new MixerStrip (*this, _session, route);
369 strips.push_back (strip);
371 Config->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
373 if (strip->width_owner() != strip) {
374 strip->set_width_enum (_strip_width, this);
379 TreeModel::Row row = *(track_model->insert(insert_iter));
380 row[track_columns.text] = route->name();
381 row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
382 row[track_columns.route] = route;
383 row[track_columns.strip] = strip;
386 _selection.add (strip);
389 route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
391 strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
392 strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
398 no_track_list_redisplay = false;
399 track_display.set_model (track_model);
401 sync_order_keys_from_treeview ();
402 redisplay_track_list ();
406 Mixer_UI::remove_strip (MixerStrip* strip)
408 if (_session && _session->deletion_in_progress()) {
409 /* its all being taken care of */
413 TreeModel::Children rows = track_model->children();
414 TreeModel::Children::iterator ri;
415 list<MixerStrip *>::iterator i;
417 if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
421 for (ri = rows.begin(); ri != rows.end(); ++ri) {
422 if ((*ri)[track_columns.strip] == strip) {
423 track_model->erase (ri);
430 Mixer_UI::reset_remote_control_ids ()
432 if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
436 TreeModel::Children rows = track_model->children();
442 DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
444 TreeModel::Children::iterator ri;
445 bool rid_change = false;
447 uint32_t invisible_key = UINT32_MAX;
449 for (ri = rows.begin(); ri != rows.end(); ++ri) {
450 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
451 bool visible = (*ri)[track_columns.visible];
453 if (!route->is_master() && !route->is_monitor()) {
455 uint32_t new_rid = (visible ? rid : invisible_key--);
457 if (new_rid != route->remote_control_id()) {
458 route->set_remote_control_id_explicit (new_rid);
469 /* tell the world that we changed the remote control IDs */
470 _session->notify_remote_id_change ();
475 Mixer_UI::sync_order_keys_from_treeview ()
477 if (ignore_reorder || !_session || _session->deletion_in_progress()) {
481 TreeModel::Children rows = track_model->children();
487 DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
489 TreeModel::Children::iterator ri;
490 bool changed = false;
491 bool rid_change = false;
494 uint32_t invisible_key = UINT32_MAX;
496 for (ri = rows.begin(); ri != rows.end(); ++ri) {
497 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
498 bool visible = (*ri)[track_columns.visible];
500 uint32_t old_key = route->order_key ();
502 if (order != old_key) {
503 route->set_order_key (order);
507 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
509 uint32_t new_rid = (visible ? rid : invisible_key--);
511 if (new_rid != route->remote_control_id()) {
512 route->set_remote_control_id_explicit (new_rid);
526 /* tell everyone that we changed the mixer sort keys */
527 _session->sync_order_keys ();
531 /* tell the world that we changed the remote control IDs */
532 _session->notify_remote_id_change ();
537 Mixer_UI::sync_treeview_from_order_keys ()
539 if (!_session || _session->deletion_in_progress()) {
543 DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
545 /* we could get here after either a change in the Mixer or Editor sort
546 * order, but either way, the mixer order keys reflect the intended
547 * order for the GUI, so reorder the treeview model to match it.
550 vector<int> neworder;
551 TreeModel::Children rows = track_model->children();
552 uint32_t old_order = 0;
553 bool changed = false;
559 OrderKeySortedRoutes sorted_routes;
561 for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
562 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
563 sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
566 SortByNewDisplayOrder cmp;
568 sort (sorted_routes.begin(), sorted_routes.end(), cmp);
569 neworder.assign (sorted_routes.size(), 0);
573 for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
575 neworder[n] = sr->old_display_order;
577 if (sr->old_display_order != n) {
581 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
582 sr->route->name(), sr->old_display_order, n));
586 Unwinder<bool> uw (ignore_reorder, true);
587 track_model->reorder (neworder);
590 redisplay_track_list ();
594 Mixer_UI::follow_editor_selection ()
596 if (!Config->get_link_editor_and_mixer_selection() || _following_editor_selection) {
600 _following_editor_selection = true;
601 _selection.block_routes_changed (true);
603 TrackSelection& s (PublicEditor::instance().get_selection().tracks);
605 _selection.clear_routes ();
607 for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
608 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
610 MixerStrip* ms = strip_by_route (rtav->route());
617 _following_editor_selection = false;
618 _selection.block_routes_changed (false);
623 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
625 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
626 if ((*i)->route() == r) {
635 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
637 if (ev->button == 1) {
638 if (_selection.selected (strip)) {
639 /* primary-click: toggle selection state of strip */
640 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
641 _selection.remove (strip);
644 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
645 _selection.add (strip);
646 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
648 if (!_selection.selected(strip)) {
650 /* extend selection */
652 vector<MixerStrip*> tmp;
653 bool accumulate = false;
655 tmp.push_back (strip);
657 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
659 /* hit clicked strip, start accumulating till we hit the first
668 } else if (_selection.selected (*i)) {
669 /* hit selected strip. if currently accumulating others,
670 we're done. if not accumulating others, start doing so.
685 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
691 _selection.set (strip);
700 Mixer_UI::set_session (Session* sess)
702 SessionHandlePtr::set_session (sess);
704 if (_plugin_selector) {
705 _plugin_selector->set_session (_session);
708 _group_tabs->set_session (sess);
714 XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
719 initial_track_display ();
721 _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
722 _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
723 _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
724 _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
725 _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
726 _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
727 _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
729 Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
731 route_groups_changed ();
736 /* Bit of a hack; if we're here, we're opening the mixer because of our
737 instant XML state having a show-mixer property. Fix up the corresponding
740 ActionManager::check_toggleaction ("<Actions>/Common/toggle-mixer");
747 Mixer_UI::session_going_away ()
749 ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
751 _in_group_rebuild_or_clear = true;
752 group_model->clear ();
753 _in_group_rebuild_or_clear = false;
756 track_model->clear ();
758 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
762 if (_monitor_section) {
763 _monitor_section->tearoff().hide_visible ();
770 SessionHandlePtr::session_going_away ();
777 Mixer_UI::track_visibility_changed (std::string const & path)
779 if (_session && _session->deletion_in_progress()) {
785 if ((iter = track_model->get_iter (path))) {
786 MixerStrip* strip = (*iter)[track_columns.strip];
788 bool visible = (*iter)[track_columns.visible];
790 if (strip->set_marked_for_display (!visible)) {
791 update_track_visibility ();
798 Mixer_UI::update_track_visibility ()
800 TreeModel::Children rows = track_model->children();
801 TreeModel::Children::iterator i;
804 Unwinder<bool> uw (no_track_list_redisplay, true);
806 for (i = rows.begin(); i != rows.end(); ++i) {
807 MixerStrip *strip = (*i)[track_columns.strip];
808 (*i)[track_columns.visible] = strip->marked_for_display ();
811 /* force route order keys catch up with visibility changes
814 sync_order_keys_from_treeview ();
817 redisplay_track_list ();
821 Mixer_UI::show_strip (MixerStrip* ms)
823 TreeModel::Children rows = track_model->children();
824 TreeModel::Children::iterator i;
826 for (i = rows.begin(); i != rows.end(); ++i) {
828 MixerStrip* strip = (*i)[track_columns.strip];
830 (*i)[track_columns.visible] = true;
831 redisplay_track_list ();
838 Mixer_UI::hide_strip (MixerStrip* ms)
840 TreeModel::Children rows = track_model->children();
841 TreeModel::Children::iterator i;
843 for (i = rows.begin(); i != rows.end(); ++i) {
845 MixerStrip* strip = (*i)[track_columns.strip];
847 (*i)[track_columns.visible] = false;
848 redisplay_track_list ();
855 Mixer_UI::start_updating ()
857 fast_screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
862 Mixer_UI::stop_updating ()
864 fast_screen_update_connection.disconnect();
869 Mixer_UI::fast_update_strips ()
871 if (is_mapped () && _session) {
872 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
873 (*i)->fast_update ();
879 Mixer_UI::set_all_strips_visibility (bool yn)
881 TreeModel::Children rows = track_model->children();
882 TreeModel::Children::iterator i;
885 Unwinder<bool> uw (no_track_list_redisplay, true);
887 for (i = rows.begin(); i != rows.end(); ++i) {
889 TreeModel::Row row = (*i);
890 MixerStrip* strip = row[track_columns.strip];
896 if (strip->route()->is_master() || strip->route()->is_monitor()) {
900 (*i)[track_columns.visible] = yn;
904 redisplay_track_list ();
909 Mixer_UI::set_all_audio_visibility (int tracks, bool yn)
911 TreeModel::Children rows = track_model->children();
912 TreeModel::Children::iterator i;
915 Unwinder<bool> uw (no_track_list_redisplay, true);
917 for (i = rows.begin(); i != rows.end(); ++i) {
918 TreeModel::Row row = (*i);
919 MixerStrip* strip = row[track_columns.strip];
925 if (strip->route()->is_master() || strip->route()->is_monitor()) {
929 boost::shared_ptr<AudioTrack> at = strip->audio_track();
933 (*i)[track_columns.visible] = yn;
937 if (at) { /* track */
938 (*i)[track_columns.visible] = yn;
944 (*i)[track_columns.visible] = yn;
951 redisplay_track_list ();
955 Mixer_UI::hide_all_routes ()
957 set_all_strips_visibility (false);
961 Mixer_UI::show_all_routes ()
963 set_all_strips_visibility (true);
967 Mixer_UI::show_all_audiobus ()
969 set_all_audio_visibility (2, true);
972 Mixer_UI::hide_all_audiobus ()
974 set_all_audio_visibility (2, false);
978 Mixer_UI::show_all_audiotracks()
980 set_all_audio_visibility (1, true);
983 Mixer_UI::hide_all_audiotracks ()
985 set_all_audio_visibility (1, false);
989 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
991 DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
992 sync_order_keys_from_treeview ();
996 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
998 /* this happens as the second step of a DnD within the treeview as well
999 as when a row/route is actually deleted.
1001 DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1002 sync_order_keys_from_treeview ();
1006 Mixer_UI::redisplay_track_list ()
1008 TreeModel::Children rows = track_model->children();
1009 TreeModel::Children::iterator i;
1011 if (no_track_list_redisplay) {
1015 for (i = rows.begin(); i != rows.end(); ++i) {
1017 MixerStrip* strip = (*i)[track_columns.strip];
1020 /* we're in the middle of changing a row, don't worry */
1024 bool const visible = (*i)[track_columns.visible];
1027 strip->set_gui_property ("visible", true);
1029 if (strip->packed()) {
1031 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1032 out_packer.reorder_child (*strip, -1);
1035 strip_packer.reorder_child (*strip, -1); /* put at end */
1040 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1041 out_packer.pack_start (*strip, false, false);
1043 strip_packer.pack_start (*strip, false, false);
1045 strip->set_packed (true);
1050 strip->set_gui_property ("visible", false);
1052 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1053 /* do nothing, these cannot be hidden */
1055 if (strip->packed()) {
1056 strip_packer.remove (*strip);
1057 strip->set_packed (false);
1063 _group_tabs->set_dirty ();
1067 Mixer_UI::strip_width_changed ()
1069 _group_tabs->set_dirty ();
1072 TreeModel::Children rows = track_model->children();
1073 TreeModel::Children::iterator i;
1076 for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1077 MixerStrip* strip = (*i)[track_columns.strip];
1083 bool visible = (*i)[track_columns.visible];
1086 strip->queue_draw();
1093 struct SignalOrderRouteSorter {
1094 bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
1095 if (a->is_master() || a->is_monitor()) {
1096 /* "a" is a special route (master, monitor, etc), and comes
1097 * last in the mixer ordering
1100 } else if (b->is_master() || b->is_monitor()) {
1101 /* everything comes before b */
1104 return a->order_key () < b->order_key ();
1110 Mixer_UI::initial_track_display ()
1112 boost::shared_ptr<RouteList> routes = _session->get_routes();
1113 RouteList copy (*routes);
1114 SignalOrderRouteSorter sorter;
1119 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1120 Unwinder<bool> uw2 (ignore_reorder, true);
1122 track_model->clear ();
1126 _session->sync_order_keys ();
1128 redisplay_track_list ();
1132 Mixer_UI::show_track_list_menu ()
1134 if (track_menu == 0) {
1135 build_track_menu ();
1138 track_menu->popup (1, gtk_get_current_event_time());
1142 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1144 if (Keyboard::is_context_menu_event (ev)) {
1145 show_track_list_menu ();
1153 Mixer_UI::build_track_menu ()
1155 using namespace Menu_Helpers;
1156 using namespace Gtk;
1158 track_menu = new Menu;
1159 track_menu->set_name ("ArdourContextMenu");
1160 MenuList& items = track_menu->items();
1162 items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1163 items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1164 items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1165 items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1166 items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1167 items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1172 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1174 if (!what_changed.contains (ARDOUR::Properties::name)) {
1178 ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1180 TreeModel::Children rows = track_model->children();
1181 TreeModel::Children::iterator i;
1183 for (i = rows.begin(); i != rows.end(); ++i) {
1184 if ((*i)[track_columns.strip] == mx) {
1185 (*i)[track_columns.text] = mx->route()->name();
1190 error << _("track display list item for renamed strip not found!") << endmsg;
1194 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1196 TreeModel::Path path;
1197 TreeViewColumn* column;
1201 if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1205 TreeIter iter = group_model->get_iter (path);
1210 RouteGroup* group = (*iter)[group_columns.group];
1212 if (Keyboard::is_context_menu_event (ev)) {
1213 _group_tabs->get_menu(group)->popup (1, ev->time);
1217 switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1219 if (Keyboard::is_edit_event (ev)) {
1221 // edit_route_group (group);
1223 group_display.queue_draw();
1232 bool visible = (*iter)[group_columns.visible];
1233 (*iter)[group_columns.visible] = !visible;
1235 group_display.queue_draw();
1248 Mixer_UI::activate_all_route_groups ()
1250 _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1254 Mixer_UI::disable_all_route_groups ()
1256 _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1260 Mixer_UI::route_groups_changed ()
1262 ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1264 _in_group_rebuild_or_clear = true;
1266 /* just rebuild the while thing */
1268 group_model->clear ();
1272 row = *(group_model->append());
1273 row[group_columns.visible] = true;
1274 row[group_columns.text] = (_("-all-"));
1275 row[group_columns.group] = 0;
1278 _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1280 _group_tabs->set_dirty ();
1281 _in_group_rebuild_or_clear = false;
1285 Mixer_UI::new_route_group ()
1289 _group_tabs->run_new_group_dialog (rl);
1293 Mixer_UI::remove_selected_route_group ()
1295 Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1296 TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1302 TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1305 /* selection mode is single, so rows.begin() is it */
1307 if ((iter = group_model->get_iter (*i))) {
1309 RouteGroup* rg = (*iter)[group_columns.group];
1312 _session->remove_route_group (*rg);
1318 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1320 if (in_group_row_change) {
1324 /* force an update of any mixer strips that are using this group,
1325 otherwise mix group names don't change in mixer strips
1328 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1329 if ((*i)->route_group() == group) {
1330 (*i)->route_group_changed();
1334 TreeModel::iterator i;
1335 TreeModel::Children rows = group_model->children();
1336 Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1338 in_group_row_change = true;
1340 for (i = rows.begin(); i != rows.end(); ++i) {
1341 if ((*i)[group_columns.group] == group) {
1342 (*i)[group_columns.visible] = !group->is_hidden ();
1343 (*i)[group_columns.text] = group->name ();
1348 in_group_row_change = false;
1350 if (change.contains (Properties::name)) {
1351 _group_tabs->set_dirty ();
1354 for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1355 if ((*j)->route_group() == group) {
1356 if (group->is_hidden ()) {
1366 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1371 if ((iter = group_model->get_iter (path))) {
1373 if ((group = (*iter)[group_columns.group]) == 0) {
1377 if (new_text != group->name()) {
1378 group->set_name (new_text);
1384 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1388 if (in_group_row_change) {
1392 if ((group = (*iter)[group_columns.group]) == 0) {
1396 std::string name = (*iter)[group_columns.text];
1398 if (name != group->name()) {
1399 group->set_name (name);
1402 bool hidden = !(*iter)[group_columns.visible];
1404 if (hidden != group->is_hidden ()) {
1405 group->set_hidden (hidden, this);
1409 /** Called when a group model row is deleted, but also when the model is
1410 * reordered by a user drag-and-drop; the latter is what we are
1411 * interested in here.
1414 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1416 if (_in_group_rebuild_or_clear) {
1420 /* Re-write the session's route group list so that the new order is preserved */
1422 list<RouteGroup*> new_list;
1424 Gtk::TreeModel::Children children = group_model->children();
1425 for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1426 RouteGroup* g = (*i)[group_columns.group];
1428 new_list.push_back (g);
1432 _session->reorder_route_groups (new_list);
1437 Mixer_UI::add_route_group (RouteGroup* group)
1439 ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1442 in_group_row_change = true;
1444 TreeModel::Row row = *(group_model->append());
1445 row[group_columns.visible] = !group->is_hidden ();
1446 row[group_columns.group] = group;
1447 if (!group->name().empty()) {
1448 row[group_columns.text] = group->name();
1450 row[group_columns.text] = _("unnamed");
1454 group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1457 TreeViewColumn* col = group_display.get_column (0);
1458 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1459 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1462 _group_tabs->set_dirty ();
1464 in_group_row_change = false;
1468 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1470 using namespace Menu_Helpers;
1472 if (Keyboard::is_context_menu_event (ev)) {
1473 ARDOUR_UI::instance()->add_route (this);
1481 Mixer_UI::set_strip_width (Width w, bool save)
1485 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1486 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1491 Mixer_UI::set_window_pos_and_size ()
1493 resize (m_width, m_height);
1494 move (m_root_x, m_root_y);
1498 Mixer_UI::get_window_pos_and_size ()
1500 get_position(m_root_x, m_root_y);
1501 get_size(m_width, m_height);
1505 Mixer_UI::set_state (const XMLNode& node)
1507 const XMLProperty* prop;
1510 m_width = default_width;
1511 m_height = default_height;
1515 if ((geometry = find_named_node (node, "geometry")) != 0) {
1519 if ((prop = geometry->property("x_size")) == 0) {
1520 prop = geometry->property ("x-size");
1523 m_width = atoi(prop->value());
1525 if ((prop = geometry->property("y_size")) == 0) {
1526 prop = geometry->property ("y-size");
1529 m_height = atoi(prop->value());
1532 if ((prop = geometry->property ("x_pos")) == 0) {
1533 prop = geometry->property ("x-pos");
1536 m_root_x = atoi (prop->value());
1539 if ((prop = geometry->property ("y_pos")) == 0) {
1540 prop = geometry->property ("y-pos");
1543 m_root_y = atoi (prop->value());
1547 set_window_pos_and_size ();
1549 if ((prop = node.property ("narrow-strips"))) {
1550 if (string_is_affirmative (prop->value())) {
1551 set_strip_width (Narrow);
1553 set_strip_width (Wide);
1557 if ((prop = node.property ("show-mixer"))) {
1558 if (string_is_affirmative (prop->value())) {
1563 if ((prop = node.property ("maximised"))) {
1564 bool yn = string_is_affirmative (prop->value());
1565 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1567 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1568 bool fs = tact && tact->get_active();
1570 ActionManager::do_action ("Common",
1571 "ToggleMaximalMixer");
1580 Mixer_UI::get_state (void)
1582 XMLNode* node = new XMLNode ("Mixer");
1584 if (is_realized()) {
1585 Glib::RefPtr<Gdk::Window> win = get_window();
1587 get_window_pos_and_size ();
1589 XMLNode* geometry = new XMLNode ("geometry");
1591 snprintf(buf, sizeof(buf), "%d", m_width);
1592 geometry->add_property(X_("x_size"), string(buf));
1593 snprintf(buf, sizeof(buf), "%d", m_height);
1594 geometry->add_property(X_("y_size"), string(buf));
1595 snprintf(buf, sizeof(buf), "%d", m_root_x);
1596 geometry->add_property(X_("x_pos"), string(buf));
1597 snprintf(buf, sizeof(buf), "%d", m_root_y);
1598 geometry->add_property(X_("y_pos"), string(buf));
1600 // written only for compatibility, they are not used.
1601 snprintf(buf, sizeof(buf), "%d", 0);
1602 geometry->add_property(X_("x_off"), string(buf));
1603 snprintf(buf, sizeof(buf), "%d", 0);
1604 geometry->add_property(X_("y_off"), string(buf));
1606 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gobj()));
1607 geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
1608 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gobj()));
1609 geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
1611 node->add_child_nocopy (*geometry);
1614 node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1616 node->add_property ("show-mixer", _visible ? "yes" : "no");
1618 node->add_property ("maximised", _maximised ? "yes" : "no");
1625 Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
1628 XMLProperty* prop = 0;
1630 XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1633 static int32_t done[3] = { 0, 0, 0 };
1635 height = default_height;
1637 if ((geometry = find_named_node (*node, "geometry")) != 0) {
1639 if ((prop = geometry->property ("y_size")) == 0) {
1640 prop = geometry->property ("y-size");
1643 height = atoi (prop->value());
1647 if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1653 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1655 snprintf (buf, sizeof(buf), "%d", pos);
1657 pos = atoi (prop->value());
1660 if ((done[0] = GTK_WIDGET(rhs_pane1.gobj())->allocation.height > pos)) {
1661 rhs_pane1.set_position (pos);
1664 } else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1670 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1672 snprintf (buf, sizeof(buf), "%d", pos);
1674 pos = atoi (prop->value());
1677 if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
1678 list_hpane.set_position (pos);
1683 Mixer_UI::scroll_left ()
1685 if (!scroller.get_hscrollbar()) return;
1686 Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1687 /* stupid GTK: can't rely on clamping across versions */
1688 scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
1692 Mixer_UI::scroll_right ()
1694 if (!scroller.get_hscrollbar()) return;
1695 Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1696 /* stupid GTK: can't rely on clamping across versions */
1697 scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
1701 Mixer_UI::on_key_press_event (GdkEventKey* ev)
1703 /* focus widget gets first shot, then bindings, otherwise
1704 forward to main window
1707 if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1711 KeyboardKey k (ev->state, ev->keyval);
1713 if (bindings.activate (k, Bindings::Press)) {
1717 return forward_key_press (ev);
1721 Mixer_UI::on_key_release_event (GdkEventKey* ev)
1723 if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1727 KeyboardKey k (ev->state, ev->keyval);
1729 if (bindings.activate (k, Bindings::Release)) {
1733 /* don't forward releases */
1739 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
1741 switch (ev->direction) {
1742 case GDK_SCROLL_LEFT:
1746 if (ev->state & Keyboard::TertiaryModifier) {
1752 case GDK_SCROLL_RIGHT:
1756 case GDK_SCROLL_DOWN:
1757 if (ev->state & Keyboard::TertiaryModifier) {
1769 Mixer_UI::parameter_changed (string const & p)
1771 if (p == "show-group-tabs") {
1772 bool const s = _session->config.get_show_group_tabs ();
1774 _group_tabs->show ();
1776 _group_tabs->hide ();
1778 } else if (p == "default-narrow_ms") {
1779 bool const s = Config->get_default_narrow_ms ();
1780 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1781 (*i)->set_width_enum (s ? Narrow : Wide, this);
1783 } else if (p == "remote-model") {
1784 reset_remote_control_ids ();
1789 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
1791 g->set_active (a, this);
1795 Mixer_UI::plugin_selector()
1797 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
1798 if (!_plugin_selector)
1799 _plugin_selector = new PluginSelector (PluginManager::instance());
1802 return _plugin_selector;
1806 Mixer_UI::setup_track_display ()
1808 track_model = ListStore::create (track_columns);
1809 track_display.set_model (track_model);
1810 track_display.append_column (_("Strips"), track_columns.text);
1811 track_display.append_column (_("Show"), track_columns.visible);
1812 track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
1813 track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
1814 track_display.get_column (0)->set_expand(true);
1815 track_display.get_column (1)->set_expand(false);
1816 track_display.set_name (X_("EditGroupList"));
1817 track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
1818 track_display.set_reorderable (true);
1819 track_display.set_headers_visible (true);
1821 track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
1822 track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
1824 CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
1825 track_list_visible_cell->property_activatable() = true;
1826 track_list_visible_cell->property_radio() = false;
1827 track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
1829 track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
1831 track_display_scroller.add (track_display);
1832 track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1834 VBox* v = manage (new VBox);
1836 v->pack_start (track_display_scroller, true, true);
1838 Button* b = manage (new Button);
1840 Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
1844 b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
1846 v->pack_start (*b, false, false);
1848 track_display_frame.set_name("BaseFrame");
1849 track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
1850 track_display_frame.add (*v);
1852 track_display_scroller.show();
1853 track_display_frame.show();
1854 track_display.show();
1858 Mixer_UI::new_track_or_bus ()
1860 ARDOUR_UI::instance()->add_route (this);
1865 Mixer_UI::update_title ()
1870 if (_session->snap_name() != _session->name()) {
1871 n = _session->snap_name ();
1873 n = _session->name ();
1876 if (_session->dirty ()) {
1880 WindowTitle title (n);
1881 title += S_("Window|Mixer");
1882 title += Glib::get_application_name ();
1883 set_title (title.get_string());
1887 WindowTitle title (S_("Window|Mixer"));
1888 title += Glib::get_application_name ();
1889 set_title (title.get_string());
1894 Mixer_UI::strip_by_x (int x)
1896 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1899 (*i)->translate_coordinates (*this, 0, 0, x1, y);
1900 x2 = x1 + (*i)->get_width();
1902 if (x >= x1 && x <= x2) {
1911 Mixer_UI::set_route_targets_for_operation ()
1913 _route_targets.clear ();
1915 if (!_selection.empty()) {
1916 _route_targets = _selection.routes;
1920 /* nothing selected ... try to get mixer strip at mouse */
1925 MixerStrip* ms = strip_by_x (x);
1928 _route_targets.insert (ms);
1933 Mixer_UI::monitor_section_going_away ()
1935 if (_monitor_section) {
1936 out_packer.remove (_monitor_section->tearoff());
1937 _monitor_section->set_session (0);
1942 Mixer_UI::toggle_midi_input_active (bool flip_others)
1944 boost::shared_ptr<RouteList> rl (new RouteList);
1947 set_route_targets_for_operation ();
1949 for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
1950 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
1953 rl->push_back ((*r)->route());
1954 onoff = !mt->input_active();
1958 _session->set_exclusive_input_active (rl, onoff, flip_others);
1962 Mixer_UI::maximise_mixer_space ()
1974 Mixer_UI::restore_mixer_space ()