Somewhat unconvincing visual indication that plugin inserts are splitting mono inputs to stereo.

git-svn-id: svn://localhost/ardour2/branches/3.0@8636 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/mixer_strip.cc

@@ -498,7 +498,7 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 
 	add_events (Gdk::BUTTON_RELEASE_MASK);
 
-	processor_box.show();
+	processor_box.show ();
 
 	if (!route()->is_master() && !route()->is_monitor()) {
 		/* we don't allow master or control routes to be hidden */
@@ -513,7 +513,6 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 	button_table.show();
 	middle_button_table.show();
 	bottom_button_table.show();
-	processor_box.show_all ();
 	gpm.show_all ();
 	gain_meter_alignment.show ();
 	gain_unit_button.show();

gtk2_ardour/processor_box.cc

@@ -95,10 +95,10 @@ RefPtr<Action> ProcessorBox::edit_action;
 Glib::RefPtr<Gdk::Pixbuf> SendProcessorEntry::_slider;
 
 ProcessorEntry::ProcessorEntry (boost::shared_ptr<Processor> p, Width w)
-	: _processor (p)
+	: _position (PreFader)
+	, _processor (p)
 	, _width (w)
 	, _visual_state (Gtk::STATE_NORMAL)
-	, _position (PreFader)
 {
 	_hbox.pack_start (_active, false, false);
 	_event_box.add (_name);
@@ -123,6 +123,13 @@ ProcessorEntry::ProcessorEntry (boost::shared_ptr<Processor> p, Width w)
 	_active.set_active (_processor->active ());
 	_active.signal_toggled().connect (sigc::mem_fun (*this, &ProcessorEntry::active_toggled));
 
+	_frame.show ();
+	_vbox.show ();
+	_hbox.show ();
+	_event_box.show ();
+	_name.show ();
+	_active.show ();
+	
 	_processor->ActiveChanged.connect (active_connection, invalidator (*this), boost::bind (&ProcessorEntry::processor_active_changed, this), gui_context());
 	_processor->PropertyChanged.connect (name_connection, invalidator (*this), ui_bind (&ProcessorEntry::processor_property_changed, this, _1), gui_context());
 }
@@ -349,6 +356,82 @@ SendProcessorEntry::set_pixel_width (int p)
 	_fader.set_fader_length (p);
 }
 
+PluginInsertProcessorEntry::PluginInsertProcessorEntry (boost::shared_ptr<ARDOUR::PluginInsert> p, Width w)
+	: ProcessorEntry (p, w)
+	, _plugin_insert (p)
+{
+	p->SplittingChanged.connect (
+		_splitting_connection, invalidator (*this), ui_bind (&PluginInsertProcessorEntry::plugin_insert_splitting_changed, this), gui_context()
+		);
+
+	_splitting_icon.set_size_request (-1, 12);
+
+	_vbox.pack_start (_splitting_icon);
+	_vbox.reorder_child (_splitting_icon, 0);
+
+	plugin_insert_splitting_changed ();
+}
+
+void
+PluginInsertProcessorEntry::plugin_insert_splitting_changed ()
+{
+	if (_plugin_insert->splitting ()) {
+		_splitting_icon.show ();
+	} else {
+		_splitting_icon.hide ();
+	}
+}
+
+void
+PluginInsertProcessorEntry::setup_visuals ()
+{
+	switch (_position) {
+	case PreFader:
+		_splitting_icon.set_name ("ProcessorPreFader");
+		break;
+
+	case Fader:
+		_splitting_icon.set_name ("ProcessorFader");
+		break;
+
+	case PostFader:
+		_splitting_icon.set_name ("ProcessorPostFader");
+		break;
+	}
+
+	ProcessorEntry::setup_visuals ();
+}
+
+bool
+PluginInsertProcessorEntry::SplittingIcon::on_expose_event (GdkEventExpose* ev)
+{
+	cairo_t* cr = gdk_cairo_create (get_window()->gobj());
+
+	cairo_set_line_width (cr, 1);
+
+	double const width = ev->area.width;
+	double const height = ev->area.height;
+
+	Gdk::Color const bg = get_style()->get_bg (STATE_NORMAL);
+	cairo_set_source_rgb (cr, bg.get_red_p (), bg.get_green_p (), bg.get_blue_p ());
+	
+	cairo_rectangle (cr, 0, 0, width, height);
+	cairo_fill (cr);
+
+	Gdk::Color const fg = get_style()->get_fg (STATE_NORMAL);
+	cairo_set_source_rgb (cr, fg.get_red_p (), fg.get_green_p (), fg.get_blue_p ());
+
+	cairo_move_to (cr, width * 0.3, height);
+	cairo_line_to (cr, width * 0.3, height * 0.5);
+	cairo_line_to (cr, width * 0.7, height * 0.5);
+	cairo_line_to (cr, width * 0.7, height);
+	cairo_move_to (cr, width * 0.5, height * 0.5);
+	cairo_line_to (cr, width * 0.5, 0);
+	cairo_stroke (cr);
+
+	return true;
+}
+
 ProcessorBox::ProcessorBox (ARDOUR::Session* sess, boost::function<PluginSelector*()> get_plugin_selector,
 			    RouteRedirectSelection& rsel, MixerStrip* parent, bool owner_is_mixer)
 	: _parent_strip (parent)
@@ -388,6 +471,9 @@ ProcessorBox::ProcessorBox (ARDOUR::Session* sess, boost::function<PluginSelecto
 	processor_display.DropFromAnotherBox.connect (sigc::mem_fun (*this, &ProcessorBox::object_drop));
 	processor_display.SelectionChanged.connect (sigc::mem_fun (*this, &ProcessorBox::selection_changed));
 
+	processor_scroller.show ();
+	processor_display.show ();
+
 	if (parent) {
 		parent->DeliveryChanged.connect (
 			_mixer_strip_connections, invalidator (*this), ui_bind (&ProcessorBox::mixer_strip_delivery_changed, this, _1), gui_context ()
@@ -1042,8 +1128,6 @@ ProcessorBox::redisplay_processors ()
 
 	_route->foreach_processor (sigc::mem_fun (*this, &ProcessorBox::add_processor_to_display));
 
-	build_processor_tooltip (processor_eventbox, _("Inserts, sends & plugins:"));
-
 	for (list<ProcessorWindowProxy*>::iterator i = _processor_window_proxies.begin(); i != _processor_window_proxies.end(); ++i) {
 		(*i)->marked = false;
 	}
@@ -1128,12 +1212,16 @@ ProcessorBox::add_processor_to_display (boost::weak_ptr<Processor> p)
 	}
 
 	boost::shared_ptr<Send> send = boost::dynamic_pointer_cast<Send> (processor);
+	boost::shared_ptr<PluginInsert> plugin_insert = boost::dynamic_pointer_cast<PluginInsert> (processor);
 	ProcessorEntry* e = 0;
 	if (send) {
 		e = new SendProcessorEntry (send, _width);
+	} else if (plugin_insert) {
+		e = new PluginInsertProcessorEntry (plugin_insert, _width);
 	} else {
 		e = new ProcessorEntry (processor, _width);
 	}
+	
 	e->set_pixel_width (get_allocation().get_width());
 	processor_display.add_child (e);
 }

gtk2_ardour/processor_box.h

@@ -121,7 +121,10 @@ public:
 
 protected:
 	
+	virtual void setup_visuals ();
+	
 	Gtk::VBox _vbox;
+	Position _position;
 	
 private:
 
@@ -129,7 +132,6 @@ private:
 	void processor_active_changed ();
 	void processor_property_changed (const PBD::PropertyChange&);
 	std::string name () const;
-	void setup_visuals ();
 
 	Gtk::Frame _frame;
 	Gtk::EventBox _event_box;
@@ -139,7 +141,6 @@ private:
 	boost::shared_ptr<ARDOUR::Processor> _processor;
 	Width _width;
 	Gtk::StateType _visual_state;
-	Position _position;
 	PBD::ScopedConnection active_connection;
 	PBD::ScopedConnection name_connection;
 };
@@ -167,6 +168,26 @@ private:
 	static Glib::RefPtr<Gdk::Pixbuf> _slider;
 };
 
+class PluginInsertProcessorEntry : public ProcessorEntry
+{
+public:
+	PluginInsertProcessorEntry (boost::shared_ptr<ARDOUR::PluginInsert>, Width);
+
+private:
+	void setup_visuals ();
+	void plugin_insert_splitting_changed ();
+
+	/* XXX: this seems a little ridiculous just for a simple scaleable icon */
+	class SplittingIcon : public Gtk::DrawingArea {
+	private:
+		bool on_expose_event (GdkEventExpose *);
+	};
+
+	boost::shared_ptr<ARDOUR::PluginInsert> _plugin_insert;
+	SplittingIcon _splitting_icon;
+	PBD::ScopedConnection _splitting_connection;
+};
+
 class ProcessorBox : public Gtk::HBox, public PluginInterestedObject, public ARDOUR::SessionHandlePtr
 {
   public:
@@ -217,8 +238,6 @@ class ProcessorBox : public Gtk::HBox, public PluginInterestedObject, public ARD
 
 	void selection_changed ();
 
-	Gtk::EventBox	       processor_eventbox;
-	Gtk::HBox              processor_hpacker;
 	Gtkmm2ext::DnDVBox<ProcessorEntry> processor_display;
 	Gtk::ScrolledWindow    processor_scroller;
 

libs/ardour/ardour/plugin_insert.h

@@ -109,7 +109,13 @@ class PluginInsert : public Processor
 
 	void collect_signal_for_analysis (framecnt_t nframes);
 
+	bool splitting () const {
+		return _splitting;
+	}
+
 	PBD::Signal2<void,BufferSet*, BufferSet*> AnalysisDataGathered;
+	/** Emitted when the return value of splitting () has changed */
+	PBD::Signal0<void> SplittingChanged;
 
   private:
 	/* disallow copy construction */
@@ -136,6 +142,8 @@ class PluginInsert : public Processor
 	/** true if we are splitting one processor input to >1 plugin inputs */
 	bool _splitting;
 
+	void set_splitting (bool);
+
 	void automation_run (BufferSet& bufs, pframes_t nframes);
 	void connect_and_run (BufferSet& bufs, pframes_t nframes, framecnt_t offset, bool with_auto, framepos_t now = 0);
 

libs/ardour/plugin_insert.cc

@@ -569,10 +569,12 @@ bool
 PluginInsert::configure_io (ChanCount in, ChanCount out)
 {
 	if (set_count (count_for_configuration (in, out)) == false) {
+		set_splitting (false);
 		return false;
 	}
 
 	if (_plugins.front()->get_info()->n_inputs <= in) {
+		set_splitting (false);
 		if (_plugins.front()->configure_io (in, out) == false) {
 			return false;
 		}
@@ -580,8 +582,8 @@ PluginInsert::configure_io (ChanCount in, ChanCount out)
 		/* we must be splitting a single processor input to
 		   multiple plugin inputs
 		*/
+		set_splitting (true);
 		_plugins.front()->configure_io (_plugins.front()->get_info()->n_inputs, out);
-		_splitting = true;
 	}
 
 	// we don't know the analysis window size, so we must work with the
@@ -1154,3 +1156,14 @@ PluginInsert::realtime_handle_transport_stopped ()
 		(*i)->realtime_handle_transport_stopped ();
 	}
 }
+
+void
+PluginInsert::set_splitting (bool s)
+{
+	if (_splitting == s) {
+		return;
+	}
+			
+	_splitting = s;
+	SplittingChanged (); /* EMIT SIGNAL */
+}

libs/gtkmm2ext/gtkmm2ext/dndvbox.h

@@ -61,6 +61,8 @@ public:
 		signal_drag_motion().connect (mem_fun (*this, &DnDVBox::drag_motion));
 		signal_drag_leave().connect (mem_fun (*this, &DnDVBox::drag_leave));
 
+		_internal_vbox.show ();
+		
 		drag_dest_set (_targets);
 		signal_drag_data_received().connect (mem_fun (*this, &DnDVBox::drag_data_received));
 	}
@@ -85,7 +87,7 @@ public:
 		_internal_vbox.pack_start (child->widget(), false, false);
 		
 		_children.push_back (child);
-		child->widget().show_all ();
+		child->widget().show ();
 	}
 
 	/** @return Children, sorted into the order that they are currently being displayed in the widget */