Automation selection fixes.

- display selected comtrol points in region gain lines
	- display selected points in internal edit mode
	- allow dragging of region gain lines in MouseContent mode

gtk2_ardour/audio_streamview.cc

@@ -41,6 +41,7 @@
 #include "tape_region_view.h"
 #include "audio_time_axis.h"
 #include "region_selection.h"
+#include "region_gain_line.h"
 #include "selection.h"
 #include "public_editor.h"
 #include "ardour_ui.h"
@@ -471,3 +472,14 @@ AudioStreamView::color_handler ()
 		}
 	}
 }
+
+void
+AudioStreamView::set_selected_points (PointSelection& points)
+{
+	for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
+		AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
+		if (arv && arv->get_gain_line ()) {
+			arv->get_gain_line ()->set_selected_points (points);
+		}
+	}
+}

gtk2_ardour/audio_streamview.h

@@ -26,6 +26,7 @@
 #include <boost/weak_ptr.hpp>
 
 #include "ardour/location.h"
+#include "point_selection.h"
 #include "editing.h"
 #include "streamview.h"
 
@@ -61,6 +62,7 @@ class AudioStreamView : public StreamView
 	std::pair<std::list<AudioRegionView*>, std::list<AudioRegionView*> > hide_xfades_with (boost::shared_ptr<ARDOUR::AudioRegion> ar);
 
 	RegionView* create_region_view (boost::shared_ptr<ARDOUR::Region>, bool, bool);
+	void set_selected_points (PointSelection&);
 
   private:
 	void setup_rec_box ();

gtk2_ardour/automation_line.cc

@@ -948,7 +948,8 @@ AutomationLine::set_selected_points (PointSelection const & points)
 	set_colors ();
 }
 
-void AutomationLine::set_colors ()
+void
+AutomationLine::set_colors ()
 {
 	set_line_color (ARDOUR_UI::config()->color ("automation line"));
 	for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {

gtk2_ardour/editor_mouse.cc

@@ -446,7 +446,8 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
 	if (((mouse_mode != MouseObject) &&
 	     (mouse_mode != MouseAudition || item_type != RegionItem) &&
 	     (mouse_mode != MouseTimeFX || item_type != RegionItem) &&
-	     (mouse_mode != MouseDraw)) ||
+	     (mouse_mode != MouseDraw) &&
+	     (mouse_mode != MouseContent || item_type == RegionItem)) ||
 	    ((event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE) || event->button.button > 3)) {
 		return;
 	}
@@ -762,6 +763,11 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 			}
 			return true;
 
+		case GainLineItem:
+			_drags->set (new LineDrag (this, item), event);
+			return true;
+			break;
+
 		case ControlPointItem:
 			_drags->set (new ControlPointDrag (this, item), event);
 			return true;

gtk2_ardour/route_time_axis.cc

@@ -59,6 +59,7 @@
 
 #include "ardour_ui.h"
 #include "ardour_button.h"
+#include "audio_streamview.h"
 #include "debug.h"
 #include "global_signals.h"
 #include "route_time_axis.h"
@@ -1342,6 +1343,10 @@ RouteTimeAxisView::set_selected_points (PointSelection& points)
 	for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 		(*i)->set_selected_points (points);
 	}
+	AudioStreamView* asv = dynamic_cast<AudioStreamView*>(_view);
+	if (asv) {
+		asv->set_selected_points (points);
+	}
 }
 
 void