diff --git a/gtk2_ardour/cue_editor.cc b/gtk2_ardour/cue_editor.cc
index 1f76afaaff..6f9159bb9f 100644
--- a/gtk2_ardour/cue_editor.cc
+++ b/gtk2_ardour/cue_editor.cc
@@ -190,22 +190,6 @@ CueEditor::step_mouse_mode (bool next)
 }
 
 
-void
-CueEditor::set_canvas_cursor (Gdk::Cursor*)
-{
-}
-
-size_t
-CueEditor::push_canvas_cursor (Gdk::Cursor*)
-{
-	return 0;
-}
-
-void
-CueEditor::pop_canvas_cursor ()
-{
-}
-
 void
 CueEditor::reset_x_origin_to_follow_playhead ()
 {
diff --git a/gtk2_ardour/cue_editor.h b/gtk2_ardour/cue_editor.h
index 88639c3044..b16f198dd4 100644
--- a/gtk2_ardour/cue_editor.h
+++ b/gtk2_ardour/cue_editor.h
@@ -98,9 +98,6 @@ class CueEditor : public EditingContext
 	void end_local_tempo_map (std::shared_ptr<Temporal::TempoMap const>);
 
   protected:
-	void set_canvas_cursor (Gdk::Cursor*);
-	size_t push_canvas_cursor (Gdk::Cursor*);
-	void pop_canvas_cursor ();
 	void reset_x_origin_to_follow_playhead ();
 };
 
diff --git a/gtk2_ardour/cursor_context.cc b/gtk2_ardour/cursor_context.cc
index 57f83367e7..3fe52a57b0 100644
--- a/gtk2_ardour/cursor_context.cc
+++ b/gtk2_ardour/cursor_context.cc
@@ -24,7 +24,8 @@
 CursorContext::CursorContext(EditingContext& ec, Gdk::Cursor* cursor)
 	: editing_context(ec)
 	, _index (editing_context.push_canvas_cursor(cursor))
-{}
+{
+}
 
 CursorContext::~CursorContext()
 {
diff --git a/gtk2_ardour/editing_context.cc b/gtk2_ardour/editing_context.cc
index 385370493f..356aee8964 100644
--- a/gtk2_ardour/editing_context.cc
+++ b/gtk2_ardour/editing_context.cc
@@ -61,6 +61,7 @@ Gtkmm2ext::Bindings* EditingContext::button_bindings = nullptr;
 Glib::RefPtr<Gtk::ActionGroup> EditingContext::_midi_actions;
 std::queue<EditingContext*> EditingContext::ec_stack;
 std::vector<std::string> EditingContext::grid_type_strings;
+MouseCursors* EditingContext::_cursors = nullptr;
 
 static const gchar *_grid_type_strings[] = {
 	N_("No Grid"),
@@ -106,7 +107,6 @@ EditingContext::EditingContext ()
 	, selection (new Selection (this, true))
 	, cut_buffer (new Selection (this, false))
 	, _selection_memento (new SelectionMemento())
-	, _cursors (nullptr)
 	, _verbose_cursor (nullptr)
 	, samples_per_pixel (2048)
 	, zoom_focus (ZoomFocusPlayhead)
@@ -116,6 +116,8 @@ EditingContext::EditingContext ()
 	, _visible_canvas_width (0)
 	, _visible_canvas_height (0)
 	, quantize_dialog (nullptr)
+	, vertical_adjustment (0.0, 0.0, 10.0, 400.0)
+	, horizontal_adjustment (0.0, 0.0, 1e16)
 {
 	if (!button_bindings) {
 		button_bindings = new Bindings ("editor-mouse");
@@ -131,6 +133,12 @@ EditingContext::EditingContext ()
 	if (grid_type_strings.empty()) {
 		grid_type_strings =  I18N (_grid_type_strings);
 	}
+
+	if (!_cursors) {
+		_cursors = new MouseCursors;
+		_cursors->set_cursor_set (UIConfiguration::instance().get_icon_set());
+		std::cerr << "Set cursor set to " << UIConfiguration::instance().get_icon_set() << std::endl;
+	}
 }
 
 EditingContext::~EditingContext()
@@ -1978,3 +1986,74 @@ EditingContext::pop_editing_context ()
 {
 	ec_stack.pop ();
 }
+
+double
+EditingContext::horizontal_position () const
+{
+	return sample_to_pixel (_leftmost_sample);
+}
+
+void
+EditingContext::set_horizontal_position (double p)
+{
+	p = std::max (0., p);
+
+	std::cerr << "new hp: " << p << std::endl;
+	horizontal_adjustment.set_value (p);
+
+	_leftmost_sample = (samplepos_t) floor (p * samples_per_pixel);
+}
+
+Gdk::Cursor*
+EditingContext::get_canvas_cursor () const
+{
+	/* The top of the cursor stack is always the currently visible cursor. */
+	return _cursor_stack.back();
+}
+
+void
+EditingContext::set_canvas_cursor (Gdk::Cursor* cursor)
+{
+	Glib::RefPtr<Gdk::Window> win = get_canvas_viewport()->get_window();
+
+	if (win && !_cursors->is_invalid (cursor)) {
+		/* glibmm 2.4 doesn't allow null cursor pointer because it uses
+		   a Gdk::Cursor& as the argument to Gdk::Window::set_cursor().
+		   But a null pointer just means "use parent window cursor",
+		   and so should be allowed. Gtkmm 3.x has fixed this API.
+
+		   For now, drop down and use C API
+		*/
+		gdk_window_set_cursor (win->gobj(), cursor ? cursor->gobj() : 0);
+	}
+}
+
+size_t
+EditingContext::push_canvas_cursor (Gdk::Cursor* cursor)
+{
+	if (!_cursors->is_invalid (cursor)) {
+		_cursor_stack.push_back (cursor);
+		set_canvas_cursor (cursor);
+	}
+	return _cursor_stack.size() - 1;
+}
+
+void
+EditingContext::pop_canvas_cursor ()
+{
+	while (true) {
+		if (_cursor_stack.size() <= 1) {
+			PBD::error << "attempt to pop default cursor" << endmsg;
+			return;
+		}
+
+		_cursor_stack.pop_back();
+		if (_cursor_stack.back()) {
+			/* 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. */
+			set_canvas_cursor (_cursor_stack.back());
+			return;
+		}
+	}
+}
diff --git a/gtk2_ardour/editing_context.h b/gtk2_ardour/editing_context.h
index bca30ed5de..b521d5105b 100644
--- a/gtk2_ardour/editing_context.h
+++ b/gtk2_ardour/editing_context.h
@@ -295,8 +295,8 @@ public:
 	/** @return Whether the current mouse mode is an "internal" editing mode. */
 	virtual bool internal_editing() const = 0;
 
-	virtual Gdk::Cursor* get_canvas_cursor () const = 0;
-	virtual MouseCursors const* cursors () const {
+	virtual Gdk::Cursor* get_canvas_cursor () const;
+	static MouseCursors const* cursors () {
 		return _cursors;
 	}
 	virtual VerboseCursor* verbose_cursor () const {
@@ -333,15 +333,23 @@ public:
 
 	bool typed_event (ArdourCanvas::Item*, GdkEvent*, ItemType);
 
+	void set_horizontal_position (double);
+	double horizontal_position () const;
+
+	virtual samplecnt_t current_page_samples() const = 0;
+
+	virtual ArdourCanvas::GtkCanvasViewport* get_canvas_viewport() const = 0;
+	virtual ArdourCanvas::Canvas* get_canvas() const = 0;
+
   protected:
 	static Glib::RefPtr<Gtk::ActionGroup> _midi_actions;
 
 	/* Cursor stuff.  Do not use directly, use via CursorContext. */
 	friend class CursorContext;
 	std::vector<Gdk::Cursor*> _cursor_stack;
-	virtual void set_canvas_cursor (Gdk::Cursor*) = 0;
-	virtual size_t push_canvas_cursor (Gdk::Cursor*) = 0;
-	virtual void pop_canvas_cursor () = 0;
+	virtual void set_canvas_cursor (Gdk::Cursor*);
+	virtual size_t push_canvas_cursor (Gdk::Cursor*);
+	virtual void pop_canvas_cursor ();
 
 	Editing::GridType  pre_internal_grid_type;
 	Editing::SnapMode  pre_internal_snap_mode;
@@ -397,7 +405,6 @@ public:
 	virtual void mark_region_boundary_cache_dirty () {}
 	virtual void update_tempo_based_rulers () {};
 	virtual void show_rulers_for_grid () {};
-	virtual samplecnt_t current_page_samples() const = 0;
 
 	samplepos_t       _leftmost_sample;
 
@@ -417,7 +424,7 @@ public:
 
 	std::list<XMLNode*> before; /* used in *_reversible_command */
 
-	MouseCursors* _cursors;
+	static MouseCursors* _cursors;
 
 	VerboseCursor* _verbose_cursor;
 
@@ -505,8 +512,14 @@ public:
 	static void push_editing_context (EditingContext*);
 	static void pop_editing_context ();
 
+	/** the adjustment that controls the overall editing vertical scroll position */
+	friend class EditorSummary;
+	Gtk::Adjustment     vertical_adjustment;
+	Gtk::Adjustment     horizontal_adjustment;
+
   private:
 	static std::queue<EditingContext*> ec_stack;
+
 };
 
 
diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index dbbd64d774..34fafd8738 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -305,8 +305,6 @@ Editor::Editor ()
 	, videotl_group (0)
 	, _region_boundary_cache_dirty (true)
 	, edit_packer (4, 4, true)
-	, vertical_adjustment (0.0, 0.0, 10.0, 400.0)
-	, horizontal_adjustment (0.0, 0.0, 1e16)
 	, unused_adjustment (0.0, 0.0, 10.0, 400.0)
 	, controls_layout (unused_adjustment, vertical_adjustment)
 	, _scroll_callbacks (0)
@@ -4464,9 +4462,8 @@ Editor::on_samples_per_pixel_changed ()
 
 	ZoomChanged (); /* EMIT_SIGNAL */
 
-	ArdourCanvas::GtkCanvasViewport* c;
+	ArdourCanvas::GtkCanvasViewport* c = get_canvas_viewport ();
 
-	c = get_track_canvas();
 	if (c) {
 		c->canvas()->zoomed ();
 	}
diff --git a/gtk2_ardour/editor.h b/gtk2_ardour/editor.h
index 136b659309..10974873e6 100644
--- a/gtk2_ardour/editor.h
+++ b/gtk2_ardour/editor.h
@@ -452,8 +452,6 @@ public:
 	void set_current_trimmable (std::shared_ptr<ARDOUR::Trimmable>);
 	void set_current_movable (std::shared_ptr<ARDOUR::Movable>);
 
-	Gdk::Cursor* get_canvas_cursor () const;
-
 	double clamp_verbose_cursor_x (double);
 	double clamp_verbose_cursor_y (double);
 
@@ -481,7 +479,8 @@ public:
 	ArdourCanvas::ScrollGroup* get_cursor_scroll_group () const { return cursor_scroll_group; }
 	ArdourCanvas::Container* get_drag_motion_group () const { return _drag_motion_group; }
 
-	ArdourCanvas::GtkCanvasViewport* get_track_canvas () const;
+	ArdourCanvas::GtkCanvasViewport* get_canvas_viewport () const;
+	ArdourCanvas::Canvas* get_canvas () const;
 
 	void override_visible_track_count ();
 
@@ -780,10 +779,6 @@ private:
 	Gtk::HBox global_hpacker;
 	Gtk::VBox global_vpacker;
 
-	void set_canvas_cursor (Gdk::Cursor* cursor);
-	size_t push_canvas_cursor (Gdk::Cursor*);
-	void pop_canvas_cursor ();
-
 	Gdk::Cursor* which_track_cursor () const;
 	Gdk::Cursor* which_mode_cursor () const;
 	Gdk::Cursor* which_trim_cursor (bool left_side) const;
@@ -1021,10 +1016,6 @@ private:
 
 	Gtk::Table          edit_packer;
 
-	/** the adjustment that controls the overall editor vertical scroll position */
-	Gtk::Adjustment     vertical_adjustment;
-	Gtk::Adjustment     horizontal_adjustment;
-
 	Gtk::Adjustment     unused_adjustment; // yes, really; Gtk::Layout constructor requires refs
 	Gtk::Layout         controls_layout;
 	bool control_layout_scroll (GdkEventScroll* ev);
@@ -1071,8 +1062,6 @@ private:
 	sigc::connection control_scroll_connection;
 
 	void tie_vertical_scrolling ();
-	void set_horizontal_position (double);
-	double horizontal_position () const;
 
 	struct VisualChange {
 		enum Type {
diff --git a/gtk2_ardour/editor_canvas.cc b/gtk2_ardour/editor_canvas.cc
index 3fd702ac6d..18d81c2122 100644
--- a/gtk2_ardour/editor_canvas.cc
+++ b/gtk2_ardour/editor_canvas.cc
@@ -1004,14 +1004,6 @@ Editor::tie_vertical_scrolling ()
 	_group_tabs->set_offset (vertical_adjustment.get_value ());
 }
 
-void
-Editor::set_horizontal_position (double p)
-{
-	horizontal_adjustment.set_value (p);
-
-	_leftmost_sample = (samplepos_t) floor (p * samples_per_pixel);
-}
-
 void
 Editor::color_handler()
 {
@@ -1077,10 +1069,16 @@ Editor::color_handler()
 */
 }
 
-double
-Editor::horizontal_position () const
+ArdourCanvas::GtkCanvasViewport*
+Editor::get_canvas_viewport() const
 {
-	return sample_to_pixel (_leftmost_sample);
+	return _track_canvas_viewport;
+}
+
+ArdourCanvas::Canvas*
+Editor::get_canvas() const
+{
+	return _track_canvas_viewport->canvas();
 }
 
 bool
@@ -1114,66 +1112,6 @@ Editor::clamp_verbose_cursor_y (double y)
 	return y;
 }
 
-ArdourCanvas::GtkCanvasViewport*
-Editor::get_track_canvas() const
-{
-	return _track_canvas_viewport;
-}
-
-Gdk::Cursor*
-Editor::get_canvas_cursor () const
-{
-	/* The top of the cursor stack is always the currently visible cursor. */
-	return _cursor_stack.back();
-}
-
-void
-Editor::set_canvas_cursor (Gdk::Cursor* cursor)
-{
-	Glib::RefPtr<Gdk::Window> win = _track_canvas->get_window();
-
-	if (win && !_cursors->is_invalid (cursor)) {
-		/* glibmm 2.4 doesn't allow null cursor pointer because it uses
-		   a Gdk::Cursor& as the argument to Gdk::Window::set_cursor().
-		   But a null pointer just means "use parent window cursor",
-		   and so should be allowed. Gtkmm 3.x has fixed this API.
-
-		   For now, drop down and use C API
-		*/
-		gdk_window_set_cursor (win->gobj(), cursor ? cursor->gobj() : 0);
-	}
-}
-
-size_t
-Editor::push_canvas_cursor (Gdk::Cursor* cursor)
-{
-	if (!_cursors->is_invalid (cursor)) {
-		_cursor_stack.push_back (cursor);
-		set_canvas_cursor (cursor);
-	}
-	return _cursor_stack.size() - 1;
-}
-
-void
-Editor::pop_canvas_cursor ()
-{
-	while (true) {
-		if (_cursor_stack.size() <= 1) {
-			PBD::error << "attempt to pop default cursor" << endmsg;
-			return;
-		}
-
-		_cursor_stack.pop_back();
-		if (_cursor_stack.back()) {
-			/* 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. */
-			set_canvas_cursor (_cursor_stack.back());
-			return;
-		}
-	}
-}
-
 Gdk::Cursor*
 Editor::which_trim_cursor (bool left) const
 {
diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index e7e96f7b57..30b4d19a24 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -7091,7 +7091,7 @@ RegionCutDrag::motion (GdkEvent* event, bool)
 void
 RegionCutDrag::finished (GdkEvent* event, bool)
 {
-	_editor.get_track_canvas ()->canvas ()->re_enter ();
+	_editor.get_canvas()->re_enter ();
 
 	timepos_t pos (_drags->current_pointer_time ());
 	editing_context.snap_to_with_modifier (pos, event);
diff --git a/gtk2_ardour/midi_cue_editor.cc b/gtk2_ardour/midi_cue_editor.cc
index 15571d9def..a3cac8678c 100644
--- a/gtk2_ardour/midi_cue_editor.cc
+++ b/gtk2_ardour/midi_cue_editor.cc
@@ -52,7 +52,7 @@ MidiCueEditor::MidiCueEditor()
 	, vertical_adjustment (0.0, 0.0, 10.0, 400.0)
 	, horizontal_adjustment (0.0, 0.0, 1e16)
 	, view (nullptr)
-	, mouse_mode (Editing::MouseDraw)
+	, mouse_mode (Editing::MouseContent)
 	, bbt_metric (*this)
 {
 	build_canvas ();
@@ -70,6 +70,29 @@ MidiCueEditor::~MidiCueEditor ()
 {
 }
 
+ArdourCanvas::GtkCanvasViewport*
+MidiCueEditor::get_canvas_viewport() const
+{
+	return _canvas_viewport;
+}
+
+ArdourCanvas::Canvas*
+MidiCueEditor::get_canvas() const
+{
+	return _canvas;
+}
+
+bool
+MidiCueEditor::canvas_event (GdkEvent* ev)
+{
+	if (view) {
+		return view->canvas_event (ev);
+	}
+
+	return false;
+}
+
+
 void
 MidiCueEditor::build_canvas ()
 {
@@ -77,6 +100,7 @@ MidiCueEditor::build_canvas ()
 
 	_canvas = _canvas_viewport->canvas ();
 	_canvas->set_background_color (UIConfiguration::instance().color ("arrange base"));
+	_canvas->signal_event().connect (sigc::mem_fun (*this, &MidiCueEditor::canvas_event));
 	dynamic_cast<ArdourCanvas::GtkCanvas*>(_canvas)->use_nsglview (UIConfiguration::instance().get_nsgl_view_mode () == NSGLHiRes);
 
 	/* scroll group for items that should not automatically scroll
@@ -84,23 +108,19 @@ MidiCueEditor::build_canvas ()
 	*/
 	no_scroll_group = new ArdourCanvas::Container (_canvas->root());
 
-	ArdourCanvas::ScrollGroup* hsg;
-	ArdourCanvas::ScrollGroup* hg;
-	ArdourCanvas::ScrollGroup* cg;
-
-	h_scroll_group = hg = new ArdourCanvas::ScrollGroup (_canvas->root(), ArdourCanvas::ScrollGroup::ScrollsHorizontally);
+	h_scroll_group = new ArdourCanvas::ScrollGroup (_canvas->root(), ArdourCanvas::ScrollGroup::ScrollsHorizontally);
 	CANVAS_DEBUG_NAME (h_scroll_group, "canvas h scroll");
-	_canvas->add_scroller (*hg);
+	_canvas->add_scroller (*h_scroll_group);
 
-	hv_scroll_group = hsg = new ArdourCanvas::ScrollGroup (_canvas->root(),
+	hv_scroll_group = new ArdourCanvas::ScrollGroup (_canvas->root(),
 							       ArdourCanvas::ScrollGroup::ScrollSensitivity (ArdourCanvas::ScrollGroup::ScrollsVertically|
 													     ArdourCanvas::ScrollGroup::ScrollsHorizontally));
 	CANVAS_DEBUG_NAME (hv_scroll_group, "cue canvas hv scroll");
-	_canvas->add_scroller (*hsg);
+	_canvas->add_scroller (*hv_scroll_group);
 
-	cursor_scroll_group = cg = new ArdourCanvas::ScrollGroup (_canvas->root(), ArdourCanvas::ScrollGroup::ScrollsHorizontally);
+	cursor_scroll_group = new ArdourCanvas::ScrollGroup (_canvas->root(), ArdourCanvas::ScrollGroup::ScrollsHorizontally);
 	CANVAS_DEBUG_NAME (cursor_scroll_group, "cue canvas cursor scroll");
-	_canvas->add_scroller (*cg);
+	_canvas->add_scroller (*cursor_scroll_group);
 
 	/*a group to hold global rects like punch/loop indicators */
 	global_rect_group = new ArdourCanvas::Container (hv_scroll_group);
@@ -187,12 +207,6 @@ MidiCueEditor::canvas_allocate (Gtk::Allocation alloc)
 	_visible_canvas_height = alloc.get_height();
 
 	bg->set_size (alloc.get_width(), alloc.get_height());
-	std::cerr << "bg is " << bg->width() << std::endl;
-
-	if (view) {
-		ArdourCanvas::Rect r (0., timebar_height * n_timebars, ArdourCanvas::COORD_MAX, alloc.get_height() - (timebar_height * n_timebars));
-		view->set_size (r);
-	}
 }
 
 timepos_t
diff --git a/gtk2_ardour/midi_cue_editor.h b/gtk2_ardour/midi_cue_editor.h
index 4688ff5844..06f4d729c1 100644
--- a/gtk2_ardour/midi_cue_editor.h
+++ b/gtk2_ardour/midi_cue_editor.h
@@ -79,6 +79,9 @@ class MidiCueEditor : public CueEditor
 	double timebar_height;
 	size_t n_timebars;
 
+	ArdourCanvas::GtkCanvasViewport* get_canvas_viewport() const;
+	ArdourCanvas::Canvas* get_canvas() const;
+
   protected:
 	Temporal::timepos_t snap_to_grid (Temporal::timepos_t const & start,
 	                                  Temporal::RoundMode   direction,
@@ -157,6 +160,8 @@ class MidiCueEditor : public CueEditor
 	};
 
 	BBTMetric bbt_metric;
+
+	bool canvas_event (GdkEvent*);
 };
 
 
diff --git a/gtk2_ardour/midi_view.cc b/gtk2_ardour/midi_view.cc
index 284e9bdc08..612b05f1d8 100644
--- a/gtk2_ardour/midi_view.cc
+++ b/gtk2_ardour/midi_view.cc
@@ -555,6 +555,8 @@ MidiView::motion (GdkEventMotion* ev)
 bool
 MidiView::scroll (GdkEventScroll* ev)
 {
+	std::cerr << "scroll\n";
+
 	if (_editing_context.drags()->active()) {
 		return false;
 	}
@@ -598,11 +600,17 @@ MidiView::scroll (GdkEventScroll* ev)
 				set_note_range (min (127, _midi_context.lowest_note() - step), max (0, _midi_context.highest_note() - step));
 			}
 			return true;
-		case GDK_SCROLL_LEFT:
-			break;
-		case GDK_SCROLL_RIGHT:
 
-			
+		case GDK_SCROLL_LEFT:
+			std::cerr << "left minus\n";
+			_editing_context.set_horizontal_position (_editing_context.horizontal_position() - 20.0);
+			break;
+
+		case GDK_SCROLL_RIGHT:
+			std::cerr << "right plus\n";
+			_editing_context.set_horizontal_position (_editing_context.horizontal_position() + 20.0);
+			break;
+
 		default:
 			break;
 		}
diff --git a/gtk2_ardour/public_editor.h b/gtk2_ardour/public_editor.h
index d2086274b2..c59d29b812 100644
--- a/gtk2_ardour/public_editor.h
+++ b/gtk2_ardour/public_editor.h
@@ -410,8 +410,6 @@ public:
 	virtual ArdourCanvas::ScrollGroup* get_cursor_scroll_group () const = 0;
 	virtual ArdourCanvas::Container* get_drag_motion_group () const = 0;
 
-	virtual ArdourCanvas::GtkCanvasViewport* get_track_canvas() const = 0;
-
 	virtual void set_current_trimmable (std::shared_ptr<ARDOUR::Trimmable>) = 0;
 	virtual void set_current_movable (std::shared_ptr<ARDOUR::Movable>) = 0;