Merge branch 'ardour'

* allow for left side resizable pane
* automatically set attachment button sensitivity
* remove right-side pane box when unused

gtk2_ardour/ardour_ui2.cc

@@ -163,6 +163,29 @@ bool drag_failed (const Glib::RefPtr<Gdk::DragContext>& context, DragResult resu
 void
 ARDOUR_UI::setup_transport ()
 {
+	/* NOTE - LIVETRAX does not call this */
+
+	RefPtr<Action> act;
+	/* setup actions */
+
+	/* CANNOT sigc::bind these to clicked or toggled, must use pressed or released */
+	error_alert_button.signal_button_release_event().connect (sigc::mem_fun(*this,&ARDOUR_UI::error_alert_press), false);
+	act = ActionManager::get_action (X_("Editor"), X_("toggle-log-window"));
+	error_alert_button.set_related_action(act);
+	error_alert_button.set_fallthrough_to_parent(true);
+
+#ifndef LIVETRAX
+	editor_visibility_button.set_related_action (ActionManager::get_action (X_("Common"), X_("change-editor-visibility")));
+	mixer_visibility_button.set_related_action (ActionManager::get_action (X_("Common"), X_("change-mixer-visibility")));
+	prefs_visibility_button.set_related_action (ActionManager::get_action (X_("Common"), X_("change-preferences-visibility")));
+	recorder_visibility_button.set_related_action (ActionManager::get_action (X_("Common"), X_("change-recorder-visibility")));
+	trigger_page_visibility_button.set_related_action (ActionManager::get_action (X_("Common"), X_("change-trigger-visibility")));
+#endif
+
+	/* connect signals */
+	ARDOUR_UI::Clock.connect (sigc::bind (sigc::mem_fun (primary_clock, &MainClock::set), false));
+	ARDOUR_UI::Clock.connect (sigc::bind (sigc::mem_fun (secondary_clock, &MainClock::set), false));
+
 	editor_visibility_button.signal_drag_failed().connect (sigc::bind (sigc::ptr_fun (drag_failed), editor));
 	mixer_visibility_button.signal_drag_failed().connect (sigc::bind (sigc::ptr_fun (drag_failed), mixer));
 #ifndef LIVETRAX

gtk2_ardour/ardour_ui_dependents.cc

@@ -525,6 +525,11 @@ ARDOUR_UI::livetrax_setup_windows ()
 	act = ActionManager::get_action (X_("Common"), X_("open-media-folder"));
 	livetrax_view_in_folder_button->set_related_action (act);
 
+	error_alert_button.signal_button_release_event().connect (sigc::mem_fun(*this,&ARDOUR_UI::error_alert_press), false);
+	act = ActionManager::get_action (X_("Editor"), X_("toggle-log-window"));
+	error_alert_button.set_related_action(act);
+	error_alert_button.set_fallthrough_to_parent(true);
+
 	_main_window.signal_delete_event().connect (sigc::mem_fun (*this, &ARDOUR_UI::main_window_delete_event));
 
 	/* pack the main vpacker into the main window and show everything

gtk2_ardour/audio_route_properties_box.cc

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2011-2017 Paul Davis <paul@linuxaudiosystems.com>
+ * Copyright (C) 2024 Ben Loftis <ben@harrisonconsoles.com>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "pbd/compose.h"
+#include <algorithm>
+
+#include "gtkmm2ext/actions.h"
+#include "gtkmm2ext/gui_thread.h"
+#include "gtkmm2ext/utils.h"
+
+#include "ardour/location.h"
+#include "ardour/profile.h"
+#include "ardour/session.h"
+
+#include "audio_clock.h"
+#include "automation_line.h"
+#include "control_point.h"
+#include "editor.h"
+#include "region_view.h"
+
+#include "audio_route_properties_box.h"
+
+#include "pbd/i18n.h"
+
+using namespace Gtk;
+using namespace ARDOUR;
+using namespace ArdourWidgets;
+using std::max;
+using std::min;
+
+AudioRoutePropertiesBox::AudioRoutePropertiesBox ()
+{
+	_header_label.set_text (_("AUDIO Region Properties:"));
+
+	Gtk::Table* audio_t = manage (new Gtk::Table ());
+	audio_t->set_homogeneous (true);
+	audio_t->set_spacings (4);
+
+	pack_start (*audio_t);
+}
+
+AudioRoutePropertiesBox::~AudioRoutePropertiesBox ()
+{
+}

gtk2_ardour/audio_route_properties_box.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 Paul Davis <paul@linuxaudiosystems.com>
+ * Copyright (C) 2024 Ben Loftis <ben@harrisonconsoles.com>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <map>
+
+#include <gtkmm/box.h>
+#include <gtkmm/label.h>
+#include <gtkmm/table.h>
+
+#include "ardour/ardour.h"
+#include "ardour/session_handle.h"
+
+#include "widgets/ardour_button.h"
+
+#include "gtkmm2ext/cairo_packer.h"
+
+#include "route_properties_box.h"
+
+class AudioRoutePropertiesBox : public RoutePropertiesBox
+{
+public:
+	AudioRoutePropertiesBox ();
+	~AudioRoutePropertiesBox ();
+
+private:
+
+};

gtk2_ardour/editing_context.cc

@@ -61,6 +61,7 @@ using namespace Gtk;
 using namespace Gtkmm2ext;
 using namespace PBD;
 using namespace Temporal;
+using namespace ArdourWidgets;
 using std::string;
 
 sigc::signal<void> EditingContext::DropDownKeys;
@@ -124,11 +125,15 @@ EditingContext::EditingContext (std::string const & name)
 #endif
 	, _snap_mode (SnapOff)
 	, _timeline_origin (0.)
+	, play_note_selection_button (_("Ear"), ArdourButton::Text, true)
+	, follow_playhead_button (_("F"), ArdourButton::Text, true)
+	, full_zoom_button (_("<->"), ArdourButton::Text)
 	, _drags (new DragManager (this))
 	, _leftmost_sample (0)
 	, _playhead_cursor (nullptr)
 	, _snapped_cursor (nullptr)
 	, _follow_playhead (false)
+	, visible_channel_label (_("MIDI|Channel"))
 	, selection (new Selection (this, true))
 	, cut_buffer (new Selection (this, false))
 	, _selection_memento (new SelectionMemento())
@@ -153,6 +158,8 @@ EditingContext::EditingContext (std::string const & name)
 	, entered_regionview (nullptr)
 	, clear_entered_track (false)
 {
+	using namespace Gtk::Menu_Helpers;
+
 	if (!button_bindings) {
 		button_bindings = new Bindings ("editor-mouse");
 
@@ -188,15 +195,46 @@ EditingContext::EditingContext (std::string const & name)
 	set_tooltip (grid_type_selector, _("Grid Mode"));
 	set_tooltip (snap_mode_button, _("Snap Mode\n\nRight-click to visit Snap preferences."));
 
+	set_tooltip (play_note_selection_button, _("Play notes when selected"));
+	set_tooltip (follow_playhead_button, _("Scroll automatically to keep playhead visible"));
+	/* Leave tip for full zoom button to derived class */
+	set_tooltip (visible_channel_selector, _("Select visible MIDI channel"));
+
+	play_note_selection_button.signal_clicked.connect (sigc::mem_fun (*this, &EditingContext::play_note_selection_clicked));
+	follow_playhead_button.signal_clicked.connect (sigc::mem_fun (*this, &EditingContext::follow_playhead_clicked));
+	full_zoom_button.signal_clicked.connect (sigc::mem_fun (*this, &EditingContext::full_zoom_clicked));
+
+	for (int i = 0; i < 16; i++) {
+		char buf[4];
+		sprintf(buf, "%d", i+1);
+		visible_channel_selector.AddMenuElem (MenuElem (buf, [this,i]() { EditingContext::set_visible_channel (i); }));
+	}
+
 	/* handle escape */
 
 	ARDOUR_UI::instance()->Escape.connect (escape_connection, MISSING_INVALIDATOR, std::bind (&EditingContext::escape, this), gui_context());
+
+	Config->ParameterChanged.connect (parameter_connections, MISSING_INVALIDATOR, std::bind (&EditingContext::parameter_changed, this, _1), gui_context());
+	UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &EditingContext::ui_parameter_changed));
 }
 
 EditingContext::~EditingContext()
 {
 }
 
+void
+EditingContext::ui_parameter_changed (string parameter)
+{
+	if (parameter == "sound-midi-note") {
+	}
+}
+
+
+void
+EditingContext::parameter_changed (string parameter)
+{
+}
+
 void
 EditingContext::set_session (ARDOUR::Session* s)
 {
@@ -2043,6 +2081,7 @@ EditingContext::set_canvas_cursor (Gdk::Cursor* cursor)
 		   For now, drop down and use C API
 		*/
 		gdk_window_set_cursor (win->gobj(), cursor ? cursor->gobj() : 0);
+		gdk_flush ();
 	}
 }
 
@@ -2050,6 +2089,12 @@ size_t
 EditingContext::push_canvas_cursor (Gdk::Cursor* cursor)
 {
 	if (!_cursors->is_invalid (cursor)) {
+		if (!_cursor_stack.empty()) {
+			if (cursor == _cursor_stack.back()) {
+				return _cursor_stack.size() - 1;
+			}
+		}
+
 		_cursor_stack.push_back (cursor);
 		set_canvas_cursor (cursor);
 	}
@@ -2066,7 +2111,7 @@ EditingContext::pop_canvas_cursor ()
 		}
 
 		_cursor_stack.pop_back();
-		if (_cursor_stack.back()) {
+		if (!_cursor_stack.empty()) {
 			/* Popped to an existing cursor, we're done.  Otherwise, the
 			   context that created this cursor has been destroyed, so we need
 			   to skip to the next down the stack. */
@@ -2769,4 +2814,12 @@ EditingContext::update_all_enter_cursors ()
 	}
 }
 
+void
+EditingContext::play_note_selection_clicked ()
+{
+}
 
+void
+EditingContext::follow_playhead_clicked ()
+{
+}

gtk2_ardour/editing_context.h

@@ -494,6 +494,17 @@ class EditingContext : public ARDOUR::SessionHandlePtr, public AxisViewProvider
 	void snap_mode_chosen (Editing::SnapMode);
 	void grid_type_chosen (Editing::GridType);
 
+	ArdourWidgets::ArdourButton play_note_selection_button;
+	ArdourWidgets::ArdourButton follow_playhead_button;
+	ArdourWidgets::ArdourButton full_zoom_button;
+	Gtk::Label visible_channel_label;
+	ArdourWidgets::ArdourDropdown visible_channel_selector;
+
+	virtual void play_note_selection_clicked();
+	virtual void follow_playhead_clicked ();
+	virtual void full_zoom_clicked() {};
+	virtual void set_visible_channel (int) {}
+
 	DragManager* _drags;
 
 	ArdourWidgets::ArdourButton snap_mode_button;
@@ -674,6 +685,10 @@ class EditingContext : public ARDOUR::SessionHandlePtr, public AxisViewProvider
 	uint32_t autoscroll_cnt;
 	ArdourCanvas::Rect autoscroll_boundary;
 
+	PBD::ScopedConnectionList parameter_connections;
+	virtual void parameter_changed (std::string);
+	virtual void ui_parameter_changed (std::string);
+
 	bool _mouse_changed_selection;
 	ArdourMarker* entered_marker;
 	TimeAxisView* entered_track;

gtk2_ardour/editor.cc

@@ -305,8 +305,8 @@ Editor::Editor ()
 	, controls_layout (unused_adjustment, vertical_adjustment)
 	, _scroll_callbacks (0)
 	, _full_canvas_height (0)
-	, edit_controls_left_menu (nullptr)
-	, edit_controls_right_menu (nullptr)
+	, edit_controls_left_menu (0)
+	, edit_controls_right_menu (0)
 	, _trigger_clip_picker (nullptr)
 	, _tvl_no_redisplay(false)
 	, _tvl_redisplay_on_resume(false)
@@ -651,20 +651,11 @@ Editor::Editor ()
 	Location::end_changed.connect (*this, invalidator (*this), std::bind (&Editor::location_changed, this, _1), gui_context());
 	Location::changed.connect (*this, invalidator (*this), std::bind (&Editor::location_changed, this, _1), gui_context());
 
-#if SELECTION_PROPERTIES_BOX_TODO
-	add_notebook_page (_("Selection"), *_properties_box);
-#warning Fix Properties Sidebar Layout to fit < 720px height
-#endif
-	if (!Profile->get_livetrax()) {
-
-		if (!Profile->get_livetrax()) {
-			_trigger_clip_picker = manage (new TriggerClipPicker ());
-		}
-
+#ifndef LIVETRAX
 	add_notebook_page (_("Tracks & Busses"), _routes->widget ());
 	add_notebook_page (_("Sources"), _sources->widget ());
 	add_notebook_page (_("Regions"), _regions->widget ());
-		add_notebook_page (_("Clips"), *_trigger_clip_picker);
+	add_notebook_page (_("Clips"), _trigger_clip_picker);
 	add_notebook_page (_("Arrangement"), _sections->widget ());
 	add_notebook_page (_("Snapshots"), _snapshots->widget ());
 	add_notebook_page (_("Track & Bus Groups"), _route_groups->widget ());
@@ -675,7 +666,7 @@ Editor::Editor ()
 	_the_notebook.popup_disable ();
 	_the_notebook.set_tab_pos (Gtk::POS_RIGHT);
 	_the_notebook.show_all ();
-	}
+#endif
 
 	_notebook_shrunk = false;
 
@@ -688,14 +679,38 @@ Editor::Editor ()
 		settings->get_property ("notebook-shrunk", _notebook_shrunk);
 	}
 
-	if (!Profile->get_livetrax()) {
+#ifndef LIVETRAX
+	editor_summary_pane.set_check_divider_position (true);
+	editor_summary_pane.add (edit_packer);
 
+	Button* summary_arrow_left = manage (new Button);
+	summary_arrow_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
+	summary_arrow_left->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), LEFT)));
+	summary_arrow_left->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
 
+	Button* summary_arrow_right = manage (new Button);
+	summary_arrow_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
+	summary_arrow_right->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), RIGHT)));
+	summary_arrow_right->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
 
+	VBox* summary_arrows_left = manage (new VBox);
+	summary_arrows_left->pack_start (*summary_arrow_left);
+
+	VBox* summary_arrows_right = manage (new VBox);
+	summary_arrows_right->pack_start (*summary_arrow_right);
+
+	Gtk::Frame* summary_frame = manage (new Gtk::Frame);
+	summary_frame->set_shadow_type (Gtk::SHADOW_ETCHED_IN);
+
+	summary_frame->add (*_summary);
+	summary_frame->show ();
+
+	_summary_hbox.pack_start (*summary_arrows_left, false, false);
+	_summary_hbox.pack_start (*summary_frame, true, true);
+	_summary_hbox.pack_start (*summary_arrows_right, false, false);
 
 	editor_summary_pane.add (_summary_hbox);
 	_editor_list_vbox.pack_start (_the_notebook);
-		_editor_list_vbox.pack_start (*_properties_box, false, false, 0);
 
 	content_right_pane.set_drag_cursor (*_cursors->expand_left_right);
 	editor_summary_pane.set_drag_cursor (*_cursors->expand_up_down);
@@ -705,12 +720,13 @@ Editor::Editor ()
 		/* initial allocation is 90% to canvas, 10% to summary */
 		fract = 0.90;
 	}
-	}
+	editor_summary_pane.set_divider (0, fract);
+#endif
 
 	global_vpacker.set_spacing (0);
 	global_vpacker.set_border_width (0);
 
-	if (!Profile->get_livetrax()) {
+#ifndef LIVETRAX
 	ArdourWidgets::ArdourDropShadow *toolbar_shadow = manage (new (ArdourWidgets::ArdourDropShadow));
 	toolbar_shadow->set_size_request (-1, 4);
 	toolbar_shadow->set_mode(ArdourWidgets::ArdourDropShadow::DropShadowBoth);
@@ -724,6 +740,7 @@ Editor::Editor ()
 	 */
 	content_app_bar.add (_application_bar);
 	content_att_right.add (_editor_list_vbox);
+	content_att_bottom.add (*_properties_box);
 	content_toolbar.add (global_vpacker);
 	content_innermost_hbox.add (editor_summary_pane);
 
@@ -733,11 +750,11 @@ Editor::Editor ()
 	content_hbox.show ();
 	ebox_hpacker.show();
 	global_vpacker.show();
-	} else {
+#else /* LIVETRAX */
 	global_vpacker.pack_start (edit_packer, true, true);
 	content_innermost_hbox.add (global_vpacker);
 	global_vpacker.show();
-	}
+#endif
 
 	/* register actions now so that set_state() can find them and set toggles/checks etc */
 
@@ -784,9 +801,6 @@ Editor::Editor ()
 	Session::AskAboutPlaylistDeletion.connect_same_thread (*this, std::bind (&Editor::playlist_deletion_dialog, this, _1));
 	Route::PluginSetup.connect_same_thread (*this, std::bind (&Editor::plugin_setup, this, _1, _2, _3));
 
-	Config->ParameterChanged.connect (*this, invalidator (*this), std::bind (&Editor::parameter_changed, this, _1), gui_context());
-	UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &Editor::ui_parameter_changed));
-
 	TimeAxisView::CatchDeletion.connect (*this, invalidator (*this), std::bind (&Editor::timeaxisview_deleted, this, _1), gui_context());
 
 	_ignore_region_action = false;
@@ -2350,6 +2364,15 @@ Editor::set_state (const XMLNode& node, int version)
 		tact->set_active (yn);
 	}
 
+	yn = false;
+	node.get_property ("show-editor-props", yn);
+	{
+		Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action (X_("Editor"), X_("show-editor-props"));
+		/* do it twice to force the change */
+		tact->set_active (!yn);
+		tact->set_active (yn);
+	}
+
 	int32_t el_page;
 	if (node.get_property (X_("editor-list-page"), el_page)) {
 		_the_notebook.set_current_page (el_page);
@@ -2457,6 +2480,9 @@ Editor::get_state () const
 	tact = ActionManager::get_toggle_action (X_("Editor"), X_("show-editor-list"));
 	node->set_property (X_("show-editor-list"), tact->get_active());
 
+	tact = ActionManager::get_toggle_action (X_("Editor"), X_("show-editor-props"));
+	node->set_property (X_("show-editor-props"), tact->get_active());
+
 	node->set_property (X_("editor-list-page"), _the_notebook.get_current_page ());
 
 	if (button_bindings) {
@@ -5841,6 +5867,8 @@ Editor::zoom_vertical_modifier_released()
 void
 Editor::ui_parameter_changed (string parameter)
 {
+	EditingContext::ui_parameter_changed (parameter);
+
 	if (parameter == "icon-set") {
 		while (!_cursor_stack.empty()) {
 			_cursor_stack.pop_back();

gtk2_ardour/editor_actions.cc

@@ -1100,7 +1100,7 @@ Editor::marker_click_behavior_chosen (Editing::MarkerClickBehavior m)
 void
 Editor::parameter_changed (std::string p)
 {
-	ENSURE_GUI_THREAD (*this, &Editor::parameter_changed, p)
+	EditingContext::parameter_changed (p);
 
 	if (p == "auto-loop") {
 		update_loop_range_view ();

gtk2_ardour/editor_drag.cc

@@ -7540,3 +7540,81 @@ VelocityLineDrag::aborted (bool)
 {
 	vd->end_line_drag (false);
 }
+
+ClipStartDrag::ClipStartDrag (EditingContext& ec, ArdourCanvas::Rectangle& r, Temporal::timepos_t const & os)
+	: Drag (ec, &r, os.time_domain(), nullptr, false)
+	, dragging_rect (&r)
+	, original_start (os)
+{
+}
+
+ClipStartDrag::~ClipStartDrag ()
+{
+}
+
+void
+ClipStartDrag::start_grab (GdkEvent* ev,Gdk::Cursor* c)
+{
+	Drag::start_grab (ev, c);
+}
+
+bool
+ClipStartDrag::end_grab (GdkEvent* ev)
+{
+	Drag::end_grab (ev);
+	return false;
+}
+
+void
+ClipStartDrag::motion (GdkEvent*, bool)
+{
+}
+
+void
+ClipStartDrag::finished (GdkEvent*, bool)
+{
+}
+
+void
+ClipStartDrag::aborted (bool)
+{
+}
+
+ClipEndDrag::ClipEndDrag (EditingContext& ec, ArdourCanvas::Rectangle& r, Temporal::timepos_t const & oe)
+	: Drag (ec, &r, oe.time_domain(), nullptr, false)
+	, dragging_rect (&r)
+	, original_end (oe)
+{
+}
+
+ClipEndDrag::~ClipEndDrag ()
+{
+}
+
+void
+ClipEndDrag::start_grab (GdkEvent* ev,Gdk::Cursor* c)
+{
+	Drag::start_grab (ev, c);
+}
+
+bool
+ClipEndDrag::end_grab (GdkEvent* ev)
+{
+	Drag::end_grab (ev);
+	return false;
+}
+
+void
+ClipEndDrag::motion (GdkEvent*, bool)
+{
+}
+
+void
+ClipEndDrag::finished (GdkEvent*, bool)
+{
+}
+
+void
+ClipEndDrag::aborted (bool)
+{
+}

gtk2_ardour/editor_drag.h

@@ -1640,6 +1640,39 @@ class VelocityLineDrag : public FreehandLineDrag<Evoral::ControlList::OrderedPoi
 	bool drag_did_change;
 };
 
+class ClipStartDrag : public Drag
+{
+  public:
+	ClipStartDrag (EditingContext&, ArdourCanvas::Rectangle &, Temporal::timepos_t const &);
+	~ClipStartDrag ();
 
+	void start_grab (GdkEvent*,Gdk::Cursor*);
+	bool end_grab (GdkEvent*);
+	void motion (GdkEvent*, bool);
+	void finished (GdkEvent*, bool);
+	void aborted (bool);
+
+  private:
+	ArdourCanvas::Rectangle* dragging_rect;
+	Temporal::timepos_t original_start;
+};
+
+class ClipEndDrag : public Drag
+{
+  public:
+	ClipEndDrag (EditingContext&, ArdourCanvas::Rectangle &, Temporal::timepos_t const &);
+	~ClipEndDrag ();
+
+	void start_grab (GdkEvent*,Gdk::Cursor*);
+	bool end_grab (GdkEvent*);
+	void motion (GdkEvent*, bool);
+	void finished (GdkEvent*, bool);
+	void aborted (bool);
+
+  private:
+	ArdourCanvas::Rectangle* dragging_rect;
+	Temporal::timepos_t original_end;
+
+};
 
 #endif /* __gtk2_ardour_editor_drag_h_ */

gtk2_ardour/editor_items.h

@@ -69,6 +69,8 @@ enum ItemType {
 	GridZoneItem,
 	VelocityItem,
 	VelocityBaseItem,
+	ClipStartItem,
+	ClipEndItem,
 
 	/* don't remove this */
 

gtk2_ardour/midi_cue_editor.cc

@@ -31,6 +31,8 @@
 #include "gtkmm2ext/actions.h"
 
 #include "widgets/ardour_button.h"
+#include "widgets/ardour_dropdown.h"
+#include "widgets/tooltips.h"
 
 #include "ardour_ui.h"
 #include "editor_cursors.h"
@@ -74,10 +76,9 @@ MidiCueEditor::MidiCueEditor()
 	build_grid_type_menu ();
 	build_draw_midi_menus();
 
+	build_upper_toolbar ();
 	build_canvas ();
-	setup_toolbar ();
-
-	_toolbox.pack_start (viewport(), true, true);
+	build_lower_toolbar ();
 
 	set_mouse_mode (Editing::MouseContent, true);
 }
@@ -126,8 +127,36 @@ MidiCueEditor::canvas_pre_event (GdkEvent* ev)
 }
 
 void
-MidiCueEditor::setup_toolbar ()
+MidiCueEditor::build_lower_toolbar ()
 {
+	velocity_button = new ArdourButton (_("Velocity"), ArdourButton::Text, true);
+	bender_button = new ArdourButton (_("Bender"), ArdourButton::Text, true);
+	pressure_button = new ArdourButton (_("Pressure"), ArdourButton::Text, true);
+	expression_button = new ArdourButton (_("Expression"), ArdourButton::Text, true);
+	modulation_button = new ArdourButton (_("Modulation"), ArdourButton::Text, true);
+
+	// button_bar.set_homogeneous (true);
+	button_bar.set_spacing (6);
+	button_bar.set_border_width (6);
+	button_bar.pack_start (*velocity_button, false, false);
+	button_bar.pack_start (*bender_button, false, false);
+	button_bar.pack_start (*pressure_button, false, false);
+	button_bar.pack_start (*modulation_button, false, false);
+
+	velocity_button->signal_button_release_event().connect (sigc::bind (sigc::mem_fun (*this, &MidiCueEditor::automation_button_event), ARDOUR::MidiVelocityAutomation, 0), false);
+	pressure_button->signal_button_release_event().connect (sigc::bind (sigc::mem_fun (*this, &MidiCueEditor::automation_button_event), ARDOUR::MidiChannelPressureAutomation, 0), false);
+	bender_button->signal_button_release_event().connect (sigc::bind (sigc::mem_fun (*this, &MidiCueEditor::automation_button_event), ARDOUR::MidiPitchBenderAutomation, 0), false);
+	modulation_button->signal_button_release_event().connect (sigc::bind (sigc::mem_fun (*this, &MidiCueEditor::automation_button_event), ARDOUR::MidiCCAutomation, MIDI_CTL_MSB_MODWHEEL), false);
+	expression_button->signal_button_release_event().connect (sigc::bind (sigc::mem_fun (*this, &MidiCueEditor::automation_button_event), ARDOUR::MidiCCAutomation, MIDI_CTL_MSB_EXPRESSION), false);
+
+	_toolbox.pack_start (button_bar, false, false);
+}
+
+void
+MidiCueEditor::build_upper_toolbar ()
+{
+	using namespace Gtk::Menu_Helpers;
+
 	Gtk::HBox* mode_box = manage(new Gtk::HBox);
 	mode_box->set_border_width (2);
 	mode_box->set_spacing(2);
@@ -169,13 +198,28 @@ MidiCueEditor::setup_toolbar ()
 	_toolbar_inner->pack_start (grid_box, false, false);
 	_toolbar_inner->pack_start (draw_box, false, false);
 
+	set_tooltip (full_zoom_button, _("Zoom to full clip"));
+
+	_toolbar_outer->set_border_width (6);
+	_toolbar_outer->set_spacing (12);
+	_toolbar_outer->pack_start (visible_channel_label, false, false);
+	_toolbar_outer->pack_start (visible_channel_selector, false, false);
+	_toolbar_outer->pack_start (play_note_selection_button, false, false);
+	_toolbar_outer->pack_start (follow_playhead_button, false, false);
+	_toolbar_outer->pack_start (full_zoom_button, false, false);
 	_toolbar_outer->pack_start (*_toolbar_inner, true, false);
+
 	_toolbox.pack_start (*_toolbar_outer, false, false);
 
 	Bindings* pr_bindings = Bindings::get_bindings (X_("Pianoroll"));
 	_toolbox.set_data (X_("ardour-bindings"), pr_bindings);
 }
 
+void
+MidiCueEditor::set_visible_channel (int n)
+{
+}
+
 void
 MidiCueEditor::build_canvas ()
 {
@@ -268,7 +312,7 @@ MidiCueEditor::build_canvas ()
 
 	prh = new ArdourCanvas::PianoRollHeader (v_scroll_group, *bg);
 
-	view = new MidiCueView (nullptr, 0, *data_group, *this, *bg, 0xff0000ff);
+	view = new MidiCueView (nullptr, 0, *data_group, *no_scroll_group, *this, *bg, 0xff0000ff);
 
 	bg->set_view (view);
 	prh->set_view (view);
@@ -282,6 +326,7 @@ MidiCueEditor::build_canvas ()
 
 	prh->set_position (Duple (0., n_timebars * timebar_height));
 	data_group->set_position (ArdourCanvas::Duple (_timeline_origin, timebar_height * n_timebars));
+	no_scroll_group->set_position (ArdourCanvas::Duple (_timeline_origin, timebar_height * n_timebars));
 	cursor_scroll_group->set_position (ArdourCanvas::Duple (_timeline_origin, timebar_height * n_timebars));
 	h_scroll_group->set_position (Duple (_timeline_origin, 0.));
 
@@ -292,11 +337,14 @@ MidiCueEditor::build_canvas ()
 	_playhead_cursor->set_sensitive (UIConfiguration::instance().get_sensitize_playhead());
 	_playhead_cursor->set_color (UIConfiguration::instance().color ("play head"));
 	_playhead_cursor->canvas_item().raise_to_top();
+	h_scroll_group->raise_to_top ();
 
 	_canvas->set_name ("MidiCueCanvas");
 	_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK | Gdk::SCROLL_MASK | Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
 	_canvas->set_can_focus ();
 
+	_toolbox.pack_start (*_canvas_viewport, true, true);
+
 	bindings_changed ();
 }
 
@@ -317,11 +365,6 @@ MidiCueEditor::maybe_update ()
 		return;
 	}
 
-	if (_track->rec_enable_control()->get_value()) {
-		/* ::data_captured() will handle it */
-		return;
-	}
-
 	ARDOUR::TriggerPtr trigger = _track->triggerbox()->currently_playing ();
 
 	if (!trigger) {
@@ -1613,8 +1656,6 @@ MidiCueEditor::which_canvas_cursor (ItemType type) const
 bool
 MidiCueEditor::enter_handler (ArdourCanvas::Item* item, GdkEvent* ev, ItemType item_type)
 {
-	EditorAutomationLine* al;
-
 	choose_canvas_cursor_on_entry (item_type);
 
 	switch (item_type) {
@@ -1752,6 +1793,8 @@ MidiCueEditor::set_region (std::shared_ptr<ARDOUR::MidiRegion> r)
 	}
 
 	view->set_region (r);
+	view->show_start (true);
+	view->show_end (true);
 
 	/* Compute zoom level to show entire source plus some margin if possible */
 
@@ -1774,9 +1817,36 @@ MidiCueEditor::set_region (std::shared_ptr<ARDOUR::MidiRegion> r)
 	{
 		EditingContext::TempoMapScope tms (*this, map);
 		double width = bg->width();
-		samplecnt_t samples = duration.samples();
+		/* make it 20% wider than we need */
+		samplecnt_t samples = (samplecnt_t) floor (1.2 * duration.samples());
 		std::cerr << "new spp from " << samples << " / " << width << std::endl;
 		samplecnt_t spp = floor (samples / width);
 		reset_zoom (spp);
 	}
 }
+
+bool
+MidiCueEditor::automation_button_event (GdkEventButton* ev, Evoral::ParameterType type, int id)
+{
+	SelectionOperation op = ArdourKeyboard::selection_type (ev->state);
+
+	switch (ev->type) {
+	case GDK_BUTTON_RELEASE:
+		automation_button_click (type, id, op);
+		break;
+	default:
+		break;
+	}
+
+	return false;
+}
+
+void
+MidiCueEditor::automation_button_click (Evoral::ParameterType type, int id, SelectionOperation op)
+{
+#warning paul allow channel selection (2nd param)
+	if (view)  {
+		view->update_automation_display (Evoral::Parameter (type, 0, id), op);
+	}
+}
+

gtk2_ardour/midi_cue_editor.h

@@ -109,6 +109,8 @@ class MidiCueEditor : public CueEditor
 	Gdk::Cursor* which_trim_cursor (bool left_side) const;
 	Gdk::Cursor* which_canvas_cursor (ItemType type) const;
 
+	void set_visible_channel (int chan);
+
   protected:
 	void register_actions ();
 
@@ -171,11 +173,20 @@ class MidiCueEditor : public CueEditor
 
 	Gtk::VBox     _toolbox;
 
+	Gtk::HBox                    button_bar;
+	ArdourWidgets::ArdourButton* velocity_button;
+	ArdourWidgets::ArdourButton* bender_button;
+	ArdourWidgets::ArdourButton* pressure_button;
+	ArdourWidgets::ArdourButton* expression_button;
+	ArdourWidgets::ArdourButton* modulation_button;
+
 	CueMidiBackground* bg;
 	MidiCueView* view;
 
 	void build_canvas ();
 	void canvas_allocate (Gtk::Allocation);
+	void build_upper_toolbar ();
+	void build_lower_toolbar ();
 
 	RegionSelection region_selection();
 
@@ -199,7 +210,6 @@ class MidiCueEditor : public CueEditor
 	BBTMetric bbt_metric;
 
 	bool canvas_pre_event (GdkEvent*);
-	void setup_toolbar ();
 
 	/* autoscrolling */
 
@@ -222,6 +232,11 @@ class MidiCueEditor : public CueEditor
 	std::atomic<int> idle_update_queued;
 	PBD::ScopedConnectionList capture_connections;
 	samplecnt_t data_capture_duration;
+
+	bool automation_button_event (GdkEventButton*, Evoral::ParameterType type, int id);
+	void automation_button_click (Evoral::ParameterType type, int id, ARDOUR::SelectionOperation);
+
+	int _visible_channel;
 };
 
 

gtk2_ardour/midi_cue_view.cc

@@ -48,6 +48,7 @@ using namespace Gtkmm2ext;
 MidiCueView::MidiCueView (std::shared_ptr<ARDOUR::MidiTrack> mt,
                           uint32_t                 slot_index,
                           ArdourCanvas::Item&      parent,
+                          ArdourCanvas::Item&      noscroll_parent,
                           EditingContext&          ec,
                           MidiViewBackground&      bg,
                           uint32_t                 basic_color)
@@ -55,11 +56,10 @@ MidiCueView::MidiCueView (std::shared_ptr<ARDOUR::MidiTrack> mt,
 	, active_automation (nullptr)
 	, velocity_display (nullptr)
 	, _slot_index (slot_index)
+	, _height (0.)
 {
 	CANVAS_DEBUG_NAME (_note_group, X_("note group for MIDI cue"));
 
-	_needs_active_notes_for_rec_enabled_track = true;
-
 	/* Containers don't get canvas events, so we need an invisible rect
 	 * that will. It will be resized as needed sothat it always covers the
 	 * entire canvas/view.
@@ -79,46 +79,8 @@ MidiCueView::MidiCueView (std::shared_ptr<ARDOUR::MidiTrack> mt,
 	automation_group->set_fill_color (UIConfiguration::instance().color ("midi automation track fill"));
 	automation_group->set_data ("linemerger", this);
 
-	button_bar = new ArdourCanvas::Box (&parent, ArdourCanvas::Box::Horizontal);
-	CANVAS_DEBUG_NAME (button_bar, "button bar");
-	button_bar->set_spacing (12.);
-	/* Right-side padding only */
-	button_bar->set_padding (0., 0., 0., 24.);
-	button_bar->set_margin (5., 5., 5., 5.);
-
-	Pango::FontDescription button_font = UIConfiguration::instance().get_NormalFont();
-
-	velocity_button = new ArdourCanvas::Button (button_bar, _("Velocity"), button_font);
-	velocity_button->text()->set_color (UIConfiguration::instance().color ("neutral:foreground"));
-	CANVAS_DEBUG_NAME (velocity_button, "velocity button");
-
-	bender_button = new ArdourCanvas::Button (button_bar, _("Bender"), button_font);
-	bender_button->text()->set_color (UIConfiguration::instance().color ("neutral:foreground"));
-	CANVAS_DEBUG_NAME (bender_button, "bender button");
-
-	pressure_button = new ArdourCanvas::Button (button_bar, _("Pressure"), button_font);
-	pressure_button->text()->set_color (UIConfiguration::instance().color ("neutral:foreground"));
-	CANVAS_DEBUG_NAME (pressure_button, "pressure button");
-
-	expression_button = new ArdourCanvas::Button (button_bar, _("Expression"), button_font);
-	expression_button->text()->set_color (UIConfiguration::instance().color ("neutral:foreground"));
-	CANVAS_DEBUG_NAME (expression_button, "expression button");
-
-	modulation_button = new ArdourCanvas::Button (button_bar, _("Modulation"), button_font);
-	modulation_button->text()->set_color (UIConfiguration::instance().color ("neutral:foreground"));
-	CANVAS_DEBUG_NAME (modulation_button, "modulation button");
-
-	velocity_button->Event.connect (sigc::bind (sigc::mem_fun (*this, &MidiCueView::automation_button_event), ARDOUR::MidiVelocityAutomation, 0));
-	pressure_button->Event.connect (sigc::bind (sigc::mem_fun (*this, &MidiCueView::automation_button_event), ARDOUR::MidiChannelPressureAutomation, 0));
-	bender_button->Event.connect (sigc::bind (sigc::mem_fun (*this, &MidiCueView::automation_button_event), ARDOUR::MidiPitchBenderAutomation, 0));
-	modulation_button->Event.connect (sigc::bind (sigc::mem_fun (*this, &MidiCueView::automation_button_event), ARDOUR::MidiCCAutomation, MIDI_CTL_MSB_MODWHEEL));
-	expression_button->Event.connect (sigc::bind (sigc::mem_fun (*this, &MidiCueView::automation_button_event), ARDOUR::MidiCCAutomation, MIDI_CTL_MSB_EXPRESSION));
 
 	set_extensible (true);
-
-	/* show velocity by default */
-
-	update_automation_display (Evoral::Parameter (MidiVelocityAutomation, 0, 0), SelectionSet);
 }
 
 MidiCueView::~MidiCueView ()
@@ -129,11 +91,18 @@ MidiCueView::~MidiCueView ()
 void
 MidiCueView::set_height (double h)
 {
-	double bbw, bbh;
-	button_bar->size_request (bbw, bbh);
+	_height = h;
 
-	double note_area_height = ceil ((h - bbh) / 2.);
-	double automation_height = ceil (h - bbh - note_area_height);
+	double note_area_height;
+	double automation_height;
+
+	if (automation_map.empty()) {
+		note_area_height = h;
+		automation_height = 0.;
+	} else {
+		note_area_height = ceil (h / 2.);
+		automation_height = ceil (h - note_area_height);
+	}
 
 	event_rect->set (ArdourCanvas::Rect (0.0, 0.0, ArdourCanvas::COORD_MAX, note_area_height));
 	midi_context().set_size (midi_context().width(), note_area_height);
@@ -141,8 +110,6 @@ MidiCueView::set_height (double h)
 	automation_group->set_position (ArdourCanvas::Duple (0., note_area_height));
 	automation_group->set (ArdourCanvas::Rect (0., 0., ArdourCanvas::COORD_MAX, automation_height));
 
-	button_bar->size_allocate (ArdourCanvas::Rect (0., note_area_height + automation_height, ArdourCanvas::COORD_MAX, note_area_height + automation_height + bbh));
-
 	for (auto & ads : automation_map) {
 		ads.second.set_height (automation_height);
 	}
@@ -275,29 +242,6 @@ MidiCueView::update_hit (Hit* h)
 	}
 }
 
-bool
-MidiCueView::automation_button_event (GdkEvent* ev, Evoral::ParameterType type, int id)
-{
-	SelectionOperation op = ArdourKeyboard::selection_type (ev->button.state);
-
-	switch (ev->type) {
-	case GDK_BUTTON_RELEASE:
-		automation_button_click (type, id, op);
-		break;
-	default:
-		break;
-	}
-
-	return false;
-}
-
-void
-MidiCueView::automation_button_click (Evoral::ParameterType type, int id, SelectionOperation op)
-{
-#warning paul allow channel selection (2nd param)
-	update_automation_display (Evoral::Parameter (type, 0, id), op);
-}
-
 void
 MidiCueView::update_automation_display (Evoral::Parameter const & param, SelectionOperation op)
 {
@@ -413,6 +357,8 @@ MidiCueView::update_automation_display (Evoral::Parameter const & param, Selecti
 		/* undefined in this context */
 		break;
 	}
+
+	set_height (_height);
 }
 
 std::list<SelectableOwner*>

gtk2_ardour/midi_cue_view.h

@@ -35,7 +35,6 @@ class MidiCueAutomationLine;
 
 namespace ArdourCanvas {
 	class Box;
-	class Button;
 }
 
 class MidiCueView : public MidiView
@@ -44,6 +43,7 @@ class MidiCueView : public MidiView
 	MidiCueView (std::shared_ptr<ARDOUR::MidiTrack> mt,
 	             uint32_t                    slot_index,
 	             ArdourCanvas::Item&         parent,
+	             ArdourCanvas::Item&         noscroll_parent,
 	             EditingContext&             ec,
 	             MidiViewBackground&         bg,
 	             uint32_t                    basic_color
@@ -109,13 +109,6 @@ class MidiCueView : public MidiView
 
 	VelocityDisplay* velocity_display;
 
-	ArdourCanvas::Box*    button_bar;
-	ArdourCanvas::Button* velocity_button;
-	ArdourCanvas::Button* bender_button;
-	ArdourCanvas::Button* pressure_button;
-	ArdourCanvas::Button* expression_button;
-	ArdourCanvas::Button* modulation_button;
-
 	std::shared_ptr<Temporal::TempoMap const> tempo_map;
 	ArdourCanvas::Rectangle* event_rect;
 	uint32_t _slot_index;
@@ -123,6 +116,5 @@ class MidiCueView : public MidiView
 	void update_sustained (Note *);
 	void update_hit (Hit *);
 
-	bool automation_button_event (GdkEvent*, Evoral::ParameterType type, int id);
-	void automation_button_click (Evoral::ParameterType type, int id, ARDOUR::SelectionOperation);
+	double _height;
 };

gtk2_ardour/midi_view.cc

@@ -120,9 +120,10 @@ MidiView::MidiView (std::shared_ptr<MidiTrack> mt,
 	, _step_edit_cursor (0)
 	, _step_edit_cursor_width (1, 0)
 	, _channel_selection_scoped_note (0)
-	, _needs_active_notes_for_rec_enabled_track (false)
 	, _mouse_state(None)
 	, _pressed_button(0)
+	, _start_boundary_rect (nullptr)
+	, _end_boundary_rect (nullptr)
 	, _optimization_iterator (_events.end())
 	, _list_editor (nullptr)
 	, _no_sound_notes (false)
@@ -152,7 +153,6 @@ MidiView::MidiView (MidiView const & other)
 	, _step_edit_cursor (0)
 	, _step_edit_cursor_width (1, 0)
 	, _channel_selection_scoped_note (0)
-	, _needs_active_notes_for_rec_enabled_track (false)
 	, _mouse_state(None)
 	, _pressed_button(0)
 	, _optimization_iterator (_events.end())
@@ -186,6 +186,52 @@ MidiView::init (std::shared_ptr<MidiTrack> mt)
 	_midi_context.NoteRangeChanged.connect (sigc::mem_fun (*this, &MidiView::view_changed));
 }
 
+void
+MidiView::show_start (bool yn)
+{
+	if (!yn) {
+		delete _start_boundary_rect;
+		_start_boundary_rect = nullptr;
+		return;
+	}
+
+	if (!_midi_region) {
+		return;
+	}
+
+	if (!_start_boundary_rect) {
+		_start_boundary_rect = new ArdourCanvas::Rectangle (_note_group->parent());
+		_start_boundary_rect->set_fill_color (0xff000087);
+		_start_boundary_rect->set_outline_color (0xff0000ff);
+	}
+
+	double width = _editing_context.sample_to_pixel (_midi_region->start().samples());
+	_start_boundary_rect->set (ArdourCanvas::Rect (0., 0., width, height()));
+}
+
+void
+MidiView::show_end (bool yn)
+{
+	if (!yn) {
+		delete _end_boundary_rect;
+		_end_boundary_rect = nullptr;
+		return;
+	}
+
+	if (!_midi_region) {
+		return;
+	}
+
+	if (!_end_boundary_rect) {
+		_end_boundary_rect = new ArdourCanvas::Rectangle (_note_group->parent());
+		_end_boundary_rect->set_fill_color (0xff000087);
+		_end_boundary_rect->set_outline_color (0xff0000ff);
+	}
+
+	double offset = _editing_context.sample_to_pixel ((_midi_region->start() + _midi_region->length()).samples());
+	_end_boundary_rect->set (ArdourCanvas::Rect (offset, 0., ArdourCanvas::COORD_MAX, height()));
+}
+
 void
 MidiView::set_track (std::shared_ptr<MidiTrack> mt)
 {

gtk2_ardour/midi_view.h

@@ -348,6 +348,9 @@ class MidiView : public virtual sigc::trackable, public LineMerger
 	void select_self () { select_self (false); }
 	virtual void select_self_uniquely () {}
 
+	void show_start (bool yn);
+	void show_end (bool yn);
+
   protected:
 	void init (std::shared_ptr<ARDOUR::MidiTrack>);
 	virtual void region_resized (const PBD::PropertyChange&);
@@ -503,9 +506,10 @@ class MidiView : public virtual sigc::trackable, public LineMerger
 	Temporal::Beats                      _step_edit_cursor_width;
 	Temporal::Beats                      _step_edit_cursor_position;
 	NoteBase*                            _channel_selection_scoped_note;
-	bool                                 _needs_active_notes_for_rec_enabled_track;
 	MouseState _mouse_state;
 	int _pressed_button;
+	ArdourCanvas::Rectangle*             _start_boundary_rect;
+	ArdourCanvas::Rectangle*             _end_boundary_rect;
 
 	/** Currently selected NoteBase objects */
 	Selection _selection;

gtk2_ardour/mixer_ui.cc

@@ -133,7 +133,7 @@ Mixer_UI::instance ()
 }
 
 Mixer_UI::Mixer_UI ()
-	: Tabbable (_("Mixer"), X_("mixer"))
+	: Tabbable (_("Mixer"), X_("mixer"), NULL, true, Tabbable::NoPanes)
 	, plugin_search_clear_button (X_("Clear"))
 	, _mixer_scene_release (0)
 	, no_track_list_redisplay (false)
@@ -164,13 +164,6 @@ Mixer_UI::Mixer_UI ()
 
 	contents().set_data ("ardour-bindings", bindings);
 
-	if (!Profile->get_mixbus ()) {
-		right_attachment_button.set_sensitive(false);
-	} else {
-		left_attachment_button.set_sensitive(false);
-	}
-	bottom_attachment_button.set_sensitive(false);
-
 	PresentationInfo::Change.connect (*this, invalidator (*this), std::bind (&Mixer_UI::presentation_info_changed, this, _1), gui_context());
 	Route::FanOut.connect (*this, invalidator (*this), std::bind (&Mixer_UI::fan_out, this, _1, false, true), gui_context());
 
@@ -390,7 +383,7 @@ Mixer_UI::Mixer_UI ()
 	favorite_plugins_scroller.show();
 	group_display_vbox.show();
 	group_display_frame.show();
-	favorite_plugins_frame.show();
+	favorite_plugins_frame.show_all();
 	rhs_pane1.show();
 	rhs_pane2.show();
 	strip_packer.show();
@@ -3737,7 +3730,6 @@ Mixer_UI::register_actions ()
 		act = ActionManager::register_toggle_action (group, "ToggleMixerList", _("(Mixer) Show Sidebar List"), sigc::mem_fun (*this, &Tabbable::att_left_button_toggled));
 		left_attachment_button.set_related_action (act);
 		act = ActionManager::register_toggle_action (group, "ToggleMixerStrip", _("(Mixer) Show Sidebar Strip"), []{});
-		content_right_pane.remove(content_right_vbox);
 	} else {
 		act = ActionManager::register_toggle_action (group, "ToggleMixerList", _("(Mixer) Show Sidebar List"), sigc::mem_fun (*this, &Tabbable::att_right_button_toggled));
 		right_attachment_button.set_related_action (act);
@@ -3748,7 +3740,6 @@ Mixer_UI::register_actions ()
 	act = ActionManager::register_toggle_action (group, "ToggleMixerProps", _("(Mixer) Show Properties Bottom"), sigc::mem_fun (*this, &Tabbable::att_bottom_button_toggled));
 	bottom_attachment_button.set_related_action (act);
 #else
-	content_right_pane.remove(content_right_vbox);
 	act = ActionManager::register_toggle_action (group, "ToggleMixerProps", _("(Mixer) Show Properties Bottom"), []{});
 	act = ActionManager::register_toggle_action (group, "ToggleMixerStrip", _("(Mixer) Show Sidebar Strip"), []{});
 	act = ActionManager::register_toggle_action (group, "ToggleMixerList", _("(Mixer) Show Sidebar List"), []{});

gtk2_ardour/mixer_ui.h

@@ -153,8 +153,6 @@ public:
 	void toggle_mixer_strip ();
 	void toggle_mixer_props ();
 
-	void showhide_mixer_list (bool yn);
-
 	void toggle_surround_master ();
 
 	void toggle_monitor_section ();

gtk2_ardour/prh.cc

@@ -37,6 +37,7 @@
 #include "gui_thread.h"
 #include "midi_view.h"
 #include "midi_view_background.h"
+#include "mouse_cursors.h"
 #include "prh.h"
 #include "editing_context.h"
 #include "ui_config.h"
@@ -630,21 +631,19 @@ PianoRollHeader::motion_handler (GdkEventMotion* ev)
 
 	if (!_scroomer_drag && ev->x < _scroomer_size){
 
-		Gdk::Cursor m_Cursor;
 		double scroomer_top = max (1.0, (1.0 - ((_adj.get_value()+_adj.get_page_size()) / 127.0)) * get().height());
 		double scroomer_bottom = (1.0 - (_adj.get_value () / 127.0)) * get().height();
+		double edge = 5. * UIConfiguration::instance().get_ui_scale();
 
-		if (evd.y > scroomer_top - 5 && evd.y < scroomer_top + 5){
-			m_Cursor = Gdk::Cursor (Gdk::TOP_SIDE);
-			_view->editing_context().push_canvas_cursor (&m_Cursor);
+		if (evd.y > scroomer_top - 5 && evd.y < scroomer_top + edge){
+			_view->editing_context().push_canvas_cursor (_view->editing_context().cursors()->resize_top);
 			_scroomer_state = TOP;
-		} else if (evd.y > scroomer_bottom - 5 && evd.y < scroomer_bottom + 5){
-			m_Cursor = Gdk::Cursor (Gdk::BOTTOM_SIDE);
-			_view->editing_context().push_canvas_cursor (&m_Cursor);
+		} else if (evd.y > scroomer_bottom - edge && evd.y < scroomer_bottom + edge){
+			_view->editing_context().push_canvas_cursor (_view->editing_context().cursors()->resize_bottom);
 			_scroomer_state = BOTTOM;
 		} else {
+			_view->editing_context().push_canvas_cursor (_view->editing_context().cursors()->grabber);
 			_scroomer_state = MOVE;
-			_view->editing_context().pop_canvas_cursor ();
 		}
 	}
 

gtk2_ardour/public_editor.cc

@@ -33,7 +33,7 @@ ARDOUR::DataType PublicEditor::pbdid_dragged_dt = ARDOUR::DataType::NIL;
 
 PublicEditor::PublicEditor ()
 	: EditingContext (X_("Editor"))
-	, Tabbable (_("Editor"), X_("editor"))
+	, Tabbable (_("Editor"), X_("editor"), NULL, true, Tabbable::NoPanes)
 	, mouse_mode_hbox (nullptr)
 {
 	_suspend_route_redisplay_counter.store (0);

gtk2_ardour/recorder_ui.cc

@@ -78,7 +78,7 @@ using namespace Menu_Helpers;
 #define PX_SCALE(px) std::max ((float)px, rintf ((float)px* UIConfiguration::instance ().get_ui_scale ()))
 
 RecorderUI::RecorderUI ()
-	: Tabbable (_("Recorder"), X_("recorder"))
+	: Tabbable (_("Recorder"), X_("recorder"), NULL, true, Tabbable::NoPanes)
 	, _toolbar_sep (1.0)
 	, _btn_rec_all (_("All"))
 	, _btn_rec_none (_("None"))
@@ -101,11 +101,6 @@ RecorderUI::RecorderUI ()
 	load_bindings ();
 	register_actions ();
 
-	content_right_pane.remove(content_right_vbox);
-	left_attachment_button.set_sensitive(false);
-	bottom_attachment_button.set_sensitive(false);
-	right_attachment_button.set_sensitive(false);
-
 	/* monitoring */
 	_auto_input_button.set_related_action (ActionManager::get_action ("Transport", "ToggleAutoInput"));
 	_auto_input_button.set_name ("transport option button");

gtk2_ardour/route_properties_box.cc

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2011-2017 Paul Davis <paul@linuxaudiosystems.com>
+ * Copyright (C) 2024 Ben Loftis <ben@harrisonconsoles.com>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "pbd/compose.h"
+#include <algorithm>
+
+#include "gtkmm2ext/actions.h"
+#include "gtkmm2ext/gui_thread.h"
+#include "gtkmm2ext/utils.h"
+
+#include "ardour/location.h"
+#include "ardour/profile.h"
+#include "ardour/session.h"
+
+#include "audio_clock.h"
+#include "automation_line.h"
+#include "control_point.h"
+#include "editor.h"
+#include "region_view.h"
+
+#include "route_properties_box.h"
+
+#include "pbd/i18n.h"
+
+using namespace Gtk;
+using namespace ARDOUR;
+using namespace ArdourWidgets;
+using std::max;
+using std::min;
+
+RoutePropertiesBox::RoutePropertiesBox ()
+{
+	show_all();
+}
+
+RoutePropertiesBox::~RoutePropertiesBox ()
+{
+}
+
+void
+RoutePropertiesBox::set_route (std::shared_ptr<ARDOUR::Route> rt)
+{
+	//TODO: route properties
+//	rt->PropertyChanged.connect (state_connection, invalidator (*this), boost::bind (&RoutePropertiesBox::region_changed, this, _1), gui_context ());
+}
+
+void
+RoutePropertiesBox::property_changed (const PBD::PropertyChange& what_changed)
+{
+
+
+}

gtk2_ardour/route_properties_box.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2021 Paul Davis <paul@linuxaudiosystems.com>
+ * Copyright (C) 2024 Ben Loftis <ben@harrisonconsoles.com>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <map>
+
+#include <gtkmm/box.h>
+#include <gtkmm/label.h>
+#include <gtkmm/table.h>
+
+#include "ardour/ardour.h"
+#include "ardour/session_handle.h"
+
+#include "widgets/ardour_button.h"
+
+#include "gtkmm2ext/cairo_packer.h"
+
+#include "region_editor.h"
+#include "audio_clock.h"
+
+namespace ARDOUR
+{
+	class Session;
+	class Location;
+}
+
+class RoutePropertiesBox : public Gtk::HBox, public ARDOUR::SessionHandlePtr
+{
+public:
+	RoutePropertiesBox ();
+	~RoutePropertiesBox ();
+
+	virtual void set_route (std::shared_ptr<ARDOUR::Route>);
+
+protected:
+	std::shared_ptr<ARDOUR::Region> _route;
+
+	Gtk::Label _header_label;
+
+private:
+	void property_changed (const PBD::PropertyChange& what_changed);
+
+	PBD::ScopedConnection state_connection;
+};
+

gtk2_ardour/selection_properties_box.cc

@@ -46,6 +46,8 @@
 
 #include "slot_properties_box.h"
 
+#include "audio_route_properties_box.h"
+
 #include "selection_properties_box.h"
 
 #include "pbd/i18n.h"
@@ -65,12 +67,10 @@ SelectionPropertiesBox::SelectionPropertiesBox ()
 	_time_info_box = new TimeInfoBox ("EditorTimeInfo", true);
 	pack_start(*_time_info_box, false, false, 0);
 
-#if SELECTION_PROPERTIES_BOX_TODO
 	/* Region ops (mute/unmute), for multiple-Region selections */
 	_mregions_prop_box = new MultiRegionPropertiesBox ();
 	pack_start(*_mregions_prop_box, false, false, 0);
 
-
 	/* MIDI Region props, for Clips */
 	_midi_prop_box = new MidiRegionPropertiesBox ();
 	pack_start(*_midi_prop_box, false, false, 0);
@@ -79,7 +79,6 @@ SelectionPropertiesBox::SelectionPropertiesBox ()
 	_audio_prop_box = new AudioRegionPropertiesBox ();
 	pack_start(*_audio_prop_box, false, false, 0);
 
-
 	/* MIDI Region ops (transpose, quantize), for only-midi selections */
 	_midi_ops_box = new MidiRegionOperationsBox ();
 	pack_start(*_midi_ops_box, false, false, 0);
@@ -88,11 +87,62 @@ SelectionPropertiesBox::SelectionPropertiesBox ()
 	_audio_ops_box = new AudioRegionOperationsBox ();
 	pack_start(*_audio_ops_box, false, false, 0);
 
-
 	/* SLOT properties, for Trigger slot selections */
 	_slot_prop_box = new SlotPropertiesBox ();
 	pack_start(*_slot_prop_box, false, false, 0);
-#endif
+
+	/* ROUTE properties, for Track selections */
+	_route_prop_box = new RoutePropertiesBox ();
+	pack_start(*_route_prop_box, false, false, 0);
+
+	_time_info_box->set_no_show_all();
+	_mregions_prop_box->set_no_show_all();
+	_audio_prop_box->set_no_show_all();
+	_midi_ops_box->set_no_show_all();
+	_audio_ops_box->set_no_show_all();
+	_slot_prop_box->set_no_show_all();
+	_route_prop_box->set_no_show_all();
+}
+
+SelectionPropertiesBox::~SelectionPropertiesBox ()
+{
+	delete _time_info_box;
+
+	delete _mregions_prop_box;
+
+	delete _slot_prop_box;
+
+	delete _midi_ops_box;
+	delete _audio_ops_box;
+
+	delete _midi_prop_box;
+	delete _audio_prop_box;
+
+	delete _route_prop_box;  //todo: split into midi/audio
+}
+
+void
+SelectionPropertiesBox::set_session (Session* s)
+{
+	SessionHandlePtr::set_session (s);
+
+	if (!s) {
+		return;
+	}
+
+	_time_info_box->set_session(s);
+
+	_mregions_prop_box->set_session(s);
+
+	_midi_prop_box->set_session(s);
+	_audio_prop_box->set_session(s);
+
+	_midi_ops_box->set_session(s);
+	_audio_ops_box->set_session(s);
+
+	_slot_prop_box->set_session(s);
+
+	_route_prop_box->set_session(s);
 
 	/* watch for any change in our selection, so we can show an appropriate property editor */
 	Editor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &SelectionPropertiesBox::selection_changed));
@@ -111,47 +161,6 @@ SelectionPropertiesBox::SelectionPropertiesBox ()
 	selection_changed();
 }
 
-SelectionPropertiesBox::~SelectionPropertiesBox ()
-{
-	delete _time_info_box;
-
-#if SELECTION_PROPERTIES_BOX_TODO
-	delete _mregions_prop_box;
-
-	delete _slot_prop_box;
-
-	delete _midi_ops_box;
-	delete _audio_ops_box;
-
-	delete _midi_prop_box;
-	delete _audio_prop_box;
-#endif
-}
-
-void
-SelectionPropertiesBox::set_session (Session* s)
-{
-	SessionHandlePtr::set_session (s);
-
-	if (!s) {
-		return;
-	}
-
-	_time_info_box->set_session(s);
-
-#if SELECTION_PROPERTIES_BOX_TODO
-	_mregions_prop_box->set_session(s);
-
-	_midi_prop_box->set_session(s);
-	_audio_prop_box->set_session(s);
-
-	_midi_ops_box->set_session(s);
-	_audio_ops_box->set_session(s);
-
-	_slot_prop_box->set_session(s);
-#endif
-}
-
 void
 SelectionPropertiesBox::track_mouse_mode ()
 {
@@ -165,7 +174,6 @@ SelectionPropertiesBox::selection_changed ()
 
 	_time_info_box->hide();
 
-#if SELECTION_PROPERTIES_BOX_TODO
 	_mregions_prop_box->hide();
 
 	_midi_ops_box->hide();
@@ -175,7 +183,8 @@ SelectionPropertiesBox::selection_changed ()
 	_audio_prop_box->hide();
 
 	_slot_prop_box->hide();
-#endif
+
+	_route_prop_box->hide();
 
 	_header_label.hide();
 
@@ -185,6 +194,16 @@ SelectionPropertiesBox::selection_changed ()
 		_header_label.show();
 	}
 
+	if (!selection.tracks.empty()) {
+		_route_prop_box->show();
+		TimeAxisView *tav = *(selection.tracks.begin());
+		RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(tav);
+		_route_prop_box->set_route(rtav->route());
+		_header_label.set_text(_("Track Properties (Press ESC to Deselect All)"));
+		_header_label.hide();
+
+	}
+
 #if SELECTION_PROPERTIES_BOX_TODO
 	/* one or more regions, show the multi-region operations box (just MUTE? kinda boring) */
 	if (!selection.regions.empty()) {
@@ -215,8 +234,10 @@ SelectionPropertiesBox::selection_changed ()
 	if (found_audio_regions && ! found_midi_regions) {
 		_audio_ops_box->show();
 	}
+#endif
 
 	std::shared_ptr<ARDOUR::Region> selected_region = std::shared_ptr<ARDOUR::Region>();
+	RegionView *selected_regionview = NULL;
 
 	if (!selection.triggers.empty()) {
 		TriggerSelection ts = selection.triggers;
@@ -227,21 +248,21 @@ SelectionPropertiesBox::selection_changed ()
 		_slot_prop_box->set_slot(ref);
 		_slot_prop_box->show();
 
-		selected_region = ref.trigger()->region();
+//		selected_region = ref.trigger()->region();
 	} else if (selection.regions.size()==1)  {
-		selected_region = (*(selection.regions.begin()))->region();
+		selected_regionview = *(selection.regions.begin());
 	}
 
-	if (selected_region) {
+#if 0 // TODO pack region-properties here
+	if (selected_regionview) {
+		std::shared_ptr<ARDOUR::Region> r = selected_regionview->region();
 		//region properties
-		if (selected_region->data_type() == DataType::MIDI) {
-			_midi_prop_box->set_region(selected_region);
+		if (r && r->data_type() == DataType::MIDI) {
+			_midi_prop_box->set_regionview(selected_regionview);
 			_midi_prop_box->show();
-			_midi_ops_box->show();
-		} else  {
-			_audio_prop_box->set_region(selected_region);
+		} else if (r) {
+			_audio_prop_box->set_regionview(selected_regionview);  //retains a SessionHandler reference somewhere @robin
 			_audio_prop_box->show();
-			_audio_ops_box->show();
 		}
 	}
 #endif

gtk2_ardour/selection_properties_box.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2021 Paul Davis <paul@linuxaudiosystems.com>
- * Copyright (C) 2021 Ben Loftis <ben@harrisonconsoles.com>
+ * Copyright (C) 2024 Ben Loftis <ben@harrisonconsoles.com>
  *
  * 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
@@ -47,7 +47,9 @@ class MidiRegionPropertiesBox;
 class AudioRegionOperationsBox;
 class MidiRegionOperationsBox;
 
-class SelectionPropertiesBox : public Gtk::VBox, public ARDOUR::SessionHandlePtr
+class RoutePropertiesBox;
+
+class SelectionPropertiesBox : public Gtk::HBox, public ARDOUR::SessionHandlePtr
 {
 public:
 	SelectionPropertiesBox ();
@@ -74,6 +76,8 @@ private:
 
 	SlotPropertiesBox* _slot_prop_box;
 
+	RoutePropertiesBox* _route_prop_box;
+
 	void selection_changed ();
 
 	void track_mouse_mode ();

gtk2_ardour/trigger_page.cc

@@ -77,8 +77,6 @@ TriggerPage::TriggerPage ()
 	load_bindings ();
 	register_actions ();
 
-	left_attachment_button.set_sensitive(false);
-
 	/* Match TriggerStrip::_name_button height */
 	ArdourButton* spacer = manage (new ArdourButton (ArdourButton::Text));
 	spacer->set_name ("mixer strip button");

gtk2_ardour/wscript

@@ -45,6 +45,7 @@ gtk2_ardour_sources = [
         'audio_region_view.cc',
         'audio_region_operations_box.cc',
         'audio_region_properties_box.cc',
+        'audio_route_properties_box.cc',
         'audio_trigger_properties_box.cc',
         'audio_streamview.cc',
         'audio_time_axis.cc',
@@ -268,6 +269,7 @@ gtk2_ardour_sources = [
         'route_group_menu.cc',
         'route_list_base.cc',
         'route_params_ui.cc',
+        'route_properties_box.cc',
         'route_processor_selection.cc',
         'route_time_axis.cc',
         'route_ui.cc',

libs/widgets/tabbable.cc

@@ -37,10 +37,11 @@ using namespace Gtk;
 using namespace Gtkmm2ext;
 using namespace ArdourWidgets;
 
-Tabbable::Tabbable (const string& visible_name, string const & nontranslatable_name, Widget* w, bool tabbed_by_default)
+Tabbable::Tabbable (const string& visible_name, string const & nontranslatable_name, Widget* w, bool tabbed_by_default, PaneLayout pl)
 	: WindowProxy (visible_name, nontranslatable_name)
 	, _parent_notebook (0)
 	, tab_requested_by_state (tabbed_by_default)
+	, _panelayout (pl)
 {
 	if (w) {
 		_contents = w;
@@ -78,6 +79,10 @@ Tabbable::default_layout ()
 	right_attachment_button.set_tweaks (ArdourButton::ExpandtoSquare);
 	bottom_attachment_button.set_tweaks (ArdourButton::ExpandtoSquare);
 
+	left_attachment_button.set_sensitive (0 != (_panelayout & (PaneLeft | AttLeft)));
+	right_attachment_button.set_sensitive (0 != (_panelayout & PaneRight));
+	bottom_attachment_button.set_sensitive (0 != (_panelayout & AttBottom));
+
 	content_attachment_hbox.set_border_width(3);
 	content_attachment_hbox.set_spacing(3);
 	content_attachment_hbox.pack_end (right_attachment_button, false, false);
@@ -99,27 +104,43 @@ Tabbable::default_layout ()
 
 	_content_vbox.pack_start (*toolbar_frame, false, false);
 #endif
-	_content_vbox.pack_start (content_hbox, true, true);
 
+
+	if (_panelayout & PaneLeft) {
+		_content_vbox.pack_start (content_left_pane, true, true);
+		content_left_pane.add (content_att_left);
+		content_left_pane.add (content_midlevel_vbox);
+	} else {
+		_content_vbox.pack_start (content_hbox, true, true);
 		content_hbox.pack_start (content_att_left, false, false);
 		content_hbox.pack_start (content_midlevel_vbox, true, true);
+	}
 
 	content_midlevel_vbox.pack_start (content_right_pane, true, true);
 	content_midlevel_vbox.pack_start (content_att_bottom, false, false);
 
 	content_right_pane.add (content_inner_vbox);
-	content_right_pane.add (content_right_vbox);
 
-	//TODO: menu switcher here?
+	if (_panelayout & PaneRight) {
+		content_right_pane.add (content_right_vbox);
 		content_right_vbox.pack_start (content_att_right, true, true);
+	}
 
 	content_inner_vbox.pack_start (content_toolbar, false, false);
 	content_inner_vbox.pack_start (content_innermost_hbox, true, true);
 
+	if (_panelayout & PaneRight) {
 		content_right_pane.set_child_minsize (content_att_right, 160); /* rough guess at width of notebook tabs */
+	}
 	content_right_pane.set_check_divider_position (true);
 	content_right_pane.set_divider (0, 0.85);
 
+	if (_panelayout & PaneLeft) {
+		content_left_pane.set_child_minsize (content_att_left, 80);
+	}
+	content_left_pane.set_check_divider_position (true);
+	content_left_pane.set_divider (0, 0.15);
+
 	_content_vbox.show_all();
 }
 
@@ -412,7 +433,8 @@ Tabbable::get_state() const
 
 	node.set_property (X_("tabbed"),  tabbed());
 
-	node.set_property (string_compose("%1%2", _menu_name, X_("-listpane-pos")).c_str(), content_right_pane.get_divider ());
+	node.set_property (string_compose("%1%2", _menu_name, X_("-rightpane-pos")).c_str(), content_right_pane.get_divider ());
+	node.set_property (string_compose("%1%2", _menu_name, X_("-leftpane-pos")).c_str(), content_left_pane.get_divider ());
 
 	return node;
 }
@@ -436,10 +458,14 @@ Tabbable::set_state (const XMLNode& node, int version)
 	if (window_node) {
 		window_node->get_property (X_("tabbed"), tab_requested_by_state);
 		float fract;
-		if ( window_node->get_property (string_compose("%1%2", _menu_name, X_("-listpane-pos")).c_str(), fract) ) {
+		if ( window_node->get_property (string_compose("%1%2", _menu_name, X_("-rightpane-pos")).c_str(), fract) ) {
 			fract = std::max (.05f, std::min (.95f, fract));
 			content_right_pane.set_divider (0, fract);
 		}
+		if ( window_node->get_property (string_compose("%1%2", _menu_name, X_("-leftpane-pos")).c_str(), fract) ) {
+			fract = std::max (.05f, std::min (.95f, fract));
+			content_left_pane.set_divider (0, fract);
+		}
 	}
 
 

libs/widgets/widgets/tabbable.h

@@ -48,7 +48,17 @@ namespace ArdourWidgets {
 class LIBWIDGETS_API Tabbable : public Gtkmm2ext::WindowProxy
 {
 public:
-	Tabbable (const std::string& user_visible_name, std::string const & untranslated_name, Gtk::Widget* top = NULL, bool tabbed_by_default = true);
+	enum PaneLayout {
+		NoPanes      = 0x0, ///< disable all attachment buttons, do not pack any panes or attachments
+		PaneLeft     = 0x1, ///< left side attachment is a resizable pane
+		PaneRight    = 0x2, ///< pack a resizable Pane on the right-side
+		AttBottom    = 0x4, ///< bottom is a fixed size EBox attachment
+		PaneLeftBtm  = 0x5,
+		PaneRightBtm = 0x6,
+		AttLeft      = 0x8, ///< if PaneLeft is not set, pack a fixed size Ebox on the left (Editor-Mixer)
+	};
+
+	Tabbable (const std::string& user_visible_name, std::string const & untranslated_name, Gtk::Widget* top = NULL, bool tabbed_by_default = true, PaneLayout pl = PaneRightBtm);
 	~Tabbable ();
 
 	void add_to_notebook (Gtk::Notebook& notebook);
@@ -101,8 +111,53 @@ protected:
 	bool delete_event_handler (GdkEventAny *ev);
 
 	/* This is the heirarchy of a Tabbable's widget packing.
-	 * The end result is to provide 8(ish) event-boxen where the tab can put its contents
-	 * Please maintain the indention here so the hierarchy is visible
+	 *
+	 * The end result is to provide 7 event-boxes (marked with a $) where the tab can put its contents.
+	 *
+	 * +--_content_vbox----------------------------------------------------------------------------------+
+	 * |                                                                                                 |
+	 * | /--toolbar_frame------------------------------------------------------------------------------\ |
+	 * | | +--content_header_hbox--------------------------------------------------------------------+ | |
+	 * | | |                                                                                         | | |
+	 * | | | +--content_app_bar--------------------+  +--attachment_hbox--+  +--content_tabbables--+ | | |
+	 * | | | $                              (EBOX) |  |    (internal)     |  $              (EBOX) | | | |
+	 * | | | |  MAIN APPLICATION BAR               |  | (attachment btns) |  | PAGE SWITCHER BTN   | | | |
+	 * | | | |                                     |  |                   |  |                     | | | |
+	 * | | | +-------------------------------------+  +-------------------+  +---------------------+ | | |
+	 * | | |                                                                                         | | |
+	 * | | +-----------------------------------------------------------------------------------------+ | |
+	 * | \---------------------------------------------------------------------------------------------/ |
+	 * |                                                                                                 |
+	 * | +--content_hbox--OR--content_left_pane--------------------------------------------------------+ |
+	 * | |                                                                                             | |
+	 * | | +--att_left--+   +--content_midlevel_vbox-------------------------------------------------+ | |
+	 * | | $     (EBOX) |   | +--content_right_pane------------------------------------------------+ | | |
+	 * | | |            |   | | +--content_inner_vbox-----------------+   +--content_right_vbox--+ | | | |
+	 * | | |  O         |   | | |                                     |   |                      | | | | |
+	 * | | |  P   S     |   | | | +--content_toolbar----------------+ |   | +--att_right-------+ | | | | |
+	 * | | |  T   I     |   | | | $    OPTIONAL TOOLBAR      (EBOX) | |   | $           (EBOX) | | | | | |
+	 * | | |  I   D     |   | | | +---------------------------------+ |<->| |                  | | | | | |
+	 * | | |  O   E     |<->| | |                                     | P | |  OPTIONAL        | | | | | |
+	 * | | |  N   B     | O | | | +--content_innermost_hbox---------+ | A | |  SIDEBAR         | | | | | |
+	 * | | |  A   A     | P | | | $                          (HBOX) | | N | |                  | | | | | |
+	 * | | |  L   R     | T | | | |                                 | | E | |                  | | | | | |
+	 * | | |            | . | | | |    !!  MAIN PAGE CONTENT  !!    | |<->| |  (LIST)          | | | | | |
+	 * | | |            | P | | | |                                 | |   | |                  | | | | | |
+	 * | | |            | A | | | |                                 | |   | |                  | | | | | |
+	 * | | |            | N | | | +---------------------------------+ |   | +------------------+ | | | | |
+	 * | | |  (STRIP)   | E | | +-------------------------------------+   +----------------------+ | | | |
+	 * | | |            |<->| +--------------------------------------------------------------------+ | | |
+	 * | | |            |   |                                                                        | | |
+	 * | | |            |   | +-content_att_bottom-------------------------------------------------+ | | |
+	 * | | |            |   | $                                                             (EBOX) | | | |
+	 * | | |            |   | |   OPTIONAL BOTTOM (PROPERTIES)                                     | | | |
+	 * | | |            |   | |                                                                    | | | |
+	 * | | |            |   | +--------------------------------------------------------------------+ | | |
+	 * | | +------------+   +------------------------------------------------------------------------+ | |
+	 * | +---------------------------------------------------------------------------------------------+ |
+	 * |                                                                                                 |
+	 * +-------------------------------------------------------------------------------------------------+
+	 *
 	 */
 
 	/* clang-format off */
@@ -113,6 +168,7 @@ protected:
 	Gtk::EventBox     content_attachments;          /* a placeholder the (strip, list, props) visibility buttons for this tab */
 	Gtk::HBox           content_attachment_hbox;
 	EventBoxExt       content_tabbables;            /* a placeholder for the tabbable switching buttons (used by ArdourUI) */
+	HPane           content_left_pane;
 	Gtk::HBox       content_hbox;
 	EventBoxExt       content_att_left;             /* a placeholder for the mixer strip, if you want one */
 	Gtk::VBox         content_midlevel_vbox;
@@ -144,6 +200,7 @@ private:
 	Gtk::Notebook  _own_notebook;
 	Gtk::Notebook* _parent_notebook;
 	bool            tab_requested_by_state;
+	PaneLayout     _panelayout;
 
 };
 

wscript

@@ -749,10 +749,6 @@ int main() { return 0; }''',
         compiler_flags.append ('-DMIXBUS')
         conf.define('MIXBUS', 1)
 
-    if Options.options.program_name.lower() == "mixbus32c":
-        conf.define('MIXBUS32C', 1)
-        compiler_flags.append ('-DMIXBUS32C')
-
     if Options.options.program_name.lower() == "livetrax":
         compiler_flags.append ('-DLIVETRAX')
         conf.define ('LIVETRAX', 1)