Support cut / copy / paste of MIDI automation.

[ardour.git] / gtk2_ardour / automation_streamview.cc

diff --git a/gtk2_ardour/automation_streamview.cc b/gtk2_ardour/automation_streamview.cc
index 6beb439b1115de96b8f7b403ec56e099b0597ea9..90e1b991fdcc9e6aa7b3d30c7c231d53a9ffff76 100644 (file)
--- a/gtk2_ardour/automation_streamview.cc
+++ b/gtk2_ardour/automation_streamview.cc
@@ -274,13 +274,16 @@ AutomationStreamView::clear ()
        }
 }
 
+/** @param start Start position in session frames.
+ *  @param end End position in session frames.
+ */
 void
-AutomationStreamView::get_selectables (nframes_t start, nframes_t end, double botfrac, double topfrac, list<Selectable*>& results)
+AutomationStreamView::get_selectables (framepos_t start, framepos_t end, double botfrac, double topfrac, list<Selectable*>& results)
 {
        for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
                AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*i);
                assert (arv);
-               arv->line()->get_selectables (start - (*i)->region()->position(), end - (*i)->region()->position(), botfrac, topfrac, results);
+               arv->line()->get_selectables (start, end, botfrac, topfrac, results);
        }
 }
 
@@ -307,3 +310,46 @@ AutomationStreamView::get_lines () const
 
        return lines;
 }
+
+struct RegionPositionSorter {
+       bool operator() (RegionView* a, RegionView* b) {
+               return a->region()->position() < b->region()->position();
+       }
+};
+       
+
+/** @param pos Position, in session frames.
+ *  @return AutomationLine to paste to for that position, or 0 if there is none appropriate.
+ */
+boost::shared_ptr<AutomationLine>
+AutomationStreamView::paste_line (framepos_t pos)
+{
+       /* XXX: not sure how best to pick this; for now, just use the last region which starts before pos */
+
+       if (region_views.empty()) {
+               return boost::shared_ptr<AutomationLine> ();
+       }
+
+       region_views.sort (RegionPositionSorter ());
+
+       list<RegionView*>::const_iterator prev = region_views.begin ();
+
+       for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
+               if ((*i)->region()->position() > pos) {
+                       break;
+               }
+               prev = i;
+       }
+
+       boost::shared_ptr<Region> r = (*prev)->region ();
+
+       /* If *prev doesn't cover pos, it's no good */
+       if (r->position() > pos || ((r->position() + r->length()) < pos)) {
+               return boost::shared_ptr<AutomationLine> ();
+       }
+
+       AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*prev);
+       assert (arv);
+
+       return arv->line ();
+}