a number of tweaks to make xfade GUI stuff better in several different ways, notable during region trims and region drags

git-svn-id: svn://localhost/ardour2/branches/3.0@12240 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/audio_region_view.cc

@@ -45,6 +45,7 @@
 #include "waveview.h"
 #include "public_editor.h"
 #include "audio_region_editor.h"
+#include "audio_streamview.h"
 #include "region_gain_line.h"
 #include "control_point.h"
 #include "ghostregion.h"
@@ -307,6 +308,7 @@ AudioRegionView::fade_out_changed ()
 {
 	reset_fade_out_shape ();
 }
+
 void
 AudioRegionView::fade_in_active_changed ()
 {
@@ -1524,6 +1526,7 @@ AudioRegionView::thaw_after_trim ()
 {
 	RegionView::thaw_after_trim ();
 	unhide_envelope ();
+	drag_end ();
 }
 
 void
@@ -1535,6 +1538,15 @@ AudioRegionView::redraw_start_xfade ()
 		return;
 	}
 
+	if (!ar->fade_in_is_xfade()) {
+		if (start_xfade_in) {
+			start_xfade_in->hide ();
+			start_xfade_out->hide ();
+			start_xfade_rect->hide ();
+		}
+		return;
+	}
+
 	redraw_start_xfade_to (ar, ar->fade_in()->back()->when);
 }
 
@@ -1631,6 +1643,15 @@ AudioRegionView::redraw_end_xfade ()
 		return;
 	}
 
+	if (!ar->fade_out_is_xfade()) {
+		if (end_xfade_in) {
+			end_xfade_in->hide ();
+			end_xfade_out->hide ();
+			end_xfade_rect->hide ();
+		}
+		return;
+	}
+
 	redraw_end_xfade_to (ar, ar->fade_out()->back()->when);
 }
 
@@ -1722,10 +1743,8 @@ AudioRegionView::redraw_end_xfade_to (boost::shared_ptr<AudioRegion> ar, framecn
 }
 
 void
-AudioRegionView::drag_start ()
+AudioRegionView::hide_xfades ()
 {
-	TimeAxisViewItem::drag_start ();
-	
 	if (start_xfade_in) {
 		start_xfade_in->hide();
 	}
@@ -1747,10 +1766,8 @@ AudioRegionView::drag_start ()
 }
 
 void
-AudioRegionView::drag_end ()
+AudioRegionView::show_xfades ()
 {
-	TimeAxisViewItem::drag_end ();
-
 	if (start_xfade_in) {
 		start_xfade_in->show();
 	}
@@ -1771,3 +1788,25 @@ AudioRegionView::drag_end ()
 	}
 }
 
+void
+AudioRegionView::drag_start ()
+{
+	TimeAxisViewItem::drag_start ();
+	AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&trackview);
+
+	if (atav) {
+		AudioStreamView* av = atav->audio_view();
+		if (av) {
+			/* this will hide our xfades too */
+			av->hide_xfades_with (audio_region());
+		}
+	}
+}
+
+void
+AudioRegionView::drag_end ()
+{
+	TimeAxisViewItem::drag_end ();
+	/* fades will be redrawn if they changed */
+}
+

gtk2_ardour/audio_region_view.h

@@ -124,6 +124,9 @@ class AudioRegionView : public RegionView
 	void redraw_end_xfade_to (boost::shared_ptr<ARDOUR::AudioRegion>, framecnt_t);
 	void redraw_start_xfade ();
 	void redraw_end_xfade ();
+	
+	void hide_xfades ();
+	void show_xfades ();
 
   protected:
 

gtk2_ardour/audio_streamview.cc

@@ -532,6 +532,23 @@ AudioStreamView::hide_all_fades ()
 	}
 }
 
+void
+AudioStreamView::hide_xfades_with (boost::shared_ptr<AudioRegion> ar)
+{
+	for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
+		AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
+		if (arv) {
+			switch (arv->region()->coverage (ar->position(), ar->last_frame())) {
+			case Evoral::OverlapNone:
+				break;
+			default:
+				arv->hide_xfades ();
+				break;
+			}
+		}
+	}
+}
+
 void
 AudioStreamView::color_handler ()
 {

gtk2_ardour/audio_streamview.h

@@ -61,6 +61,8 @@ class AudioStreamView : public StreamView
 	void show_all_fades ();
 	void hide_all_fades ();
 
+	void hide_xfades_with (boost::shared_ptr<ARDOUR::AudioRegion> ar);
+
 	RegionView* create_region_view (boost::shared_ptr<ARDOUR::Region>, bool, bool);
 
   private: