implement panner reset functionality (missing since 0.99?)

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@5013 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/panner_ui.cc

@@ -478,9 +478,9 @@ PannerUI::build_pan_menu (uint32_t which)
 	bypass_menu_item->set_active (_io->panner().bypassed());
 	bypass_menu_item->signal_toggled().connect (mem_fun(*this, &PannerUI::pan_bypass_toggle));
 
-	items.push_back (MenuElem (_("Reset"), mem_fun(*this, &PannerUI::pan_reset)));
+	items.push_back (MenuElem (_("Reset"), bind (mem_fun(*this, &PannerUI::pan_reset), which)));
 	items.push_back (SeparatorElem());
-	items.push_back (MenuElem (_("Reset all")));
+	items.push_back (MenuElem (_("Reset all"), mem_fun (*this, &PannerUI::pan_reset_all)));
 }
 
 void
@@ -499,8 +499,15 @@ PannerUI::pan_bypass_toggle ()
 }
 
 void
-PannerUI::pan_reset ()
+PannerUI::pan_reset (uint32_t which)
 {
+	_io->panner().reset_streampanner (which);
+}
+
+void
+PannerUI::pan_reset_all ()
+{
+	_io->panner().reset_to_default ();
 }
 
 void

gtk2_ardour/panner_ui.h

@@ -140,7 +140,8 @@ class PannerUI : public Gtk::HBox
 	Gtk::CheckMenuItem* bypass_menu_item;
 	void build_pan_menu (uint32_t which);
 	void pan_mute (uint32_t which);
-	void pan_reset ();
+	void pan_reset (uint32_t which);
+	void pan_reset_all ();
 	void pan_bypass_toggle ();
 
 	void pan_automation_state_changed();

libs/ardour/ardour/panner.h

@@ -248,6 +248,8 @@ class Panner : public std::vector<StreamPanner*>, public Stateful, public sigc::
 	void remove (uint32_t which);
 	void clear ();
 	void reset (uint32_t noutputs, uint32_t npans);
+	void reset_streampanner (uint32_t which_panner);
+	void reset_to_default ();
 
 	void snapshot (nframes_t now);
 	void transport_stopped (nframes_t frame);

libs/ardour/panner.cc

@@ -800,6 +800,79 @@ Panner::set_bypassed (bool yn)
 	}
 }
 
+void
+Panner::reset_to_default ()
+{
+	vector<float> positions;
+
+	switch (outputs.size()) {
+	case 0:
+	case 1:
+		return;
+	}
+
+	if (outputs.size() == 2) {
+		switch (size()) {
+		case 1:
+			front()->set_position (0.5);
+			front()->automation().reset_default (0.5);
+			return;
+			break;
+		case 2:
+			front()->set_position (0.0);
+			front()->automation().reset_default (0.0);
+			back()->set_position (1.0);
+			back()->automation().reset_default (1.0);
+			return;
+		default:
+			break;
+		}
+	}
+	
+	vector<Output>::iterator o;
+	iterator p;
+
+	for (o = outputs.begin(), p = begin(); o != outputs.end() && p != end(); ++o, ++p) {
+		(*p)->set_position ((*o).x, (*o).y);
+	}
+}
+
+void
+Panner::reset_streampanner (uint32_t which)
+{
+	if (which >= size() || which >= outputs.size()) {
+		return;
+	}
+	
+	switch (outputs.size()) {
+	case 0:
+	case 1:
+		return;
+
+	case 2:
+		switch (size()) {
+		case 1:
+			/* stereo out, 1 stream, default = middle */
+			front()->set_position (0.5);
+			front()->automation().reset_default (0.5);
+			break;
+		case 2:
+			/* stereo out, 2 streams, default = hard left/right */
+			if (which == 0) {
+				front()->set_position (0.0);
+				front()->automation().reset_default (0.0);
+			} else {
+				back()->set_position (1.0);
+				back()->automation().reset_default (1.0);
+			}
+			break;
+		}
+		return;
+
+	default:
+		(*this)[which]->set_position (outputs[which].x, outputs[which].y);
+	}
+}
 
 void
 Panner::reset (uint32_t nouts, uint32_t npans)