Hopefully fix up automation control point selection (finally).

git-svn-id: svn://localhost/ardour2/branches/3.0@7592 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 51 insertions, 0 deletions

diff --git a/gtk2_ardour/automation_range.h b/gtk2_ardour/automation_range.h
new file mode 100644
index 0000000000..e13ad378a5
--- /dev/null
+++ b/gtk2_ardour/automation_range.h
@@ -0,0 +1,51 @@
+/*
+    Copyright (C) 2000-2007 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_gtk_automation_range_h__
+#define __ardour_gtk_automation_range_h__
+
+class TimeAxisView;
+
+/** A rectangular range of an automation line, used to express a selected area.
+ *
+ *  x coordinates start/end are in AutomationList model coordinates.
+ *  y coordinates are a expressed as a fraction of the AutomationTimeAxisView's height, where 0 is the
+ *  bottom of the track, and 1 is the top.
+ *
+ *  This representation falls between the visible GUI control points and
+ *  the back-end "actual" automation points, some of which may not be
+ *  visible; it is not trivial to convert from one of these to the
+ *  other, so the AutomationSelectable is a kind of "best and worst of
+ *  both worlds".
+ *
+ *  It offers a zoom-independent representation of a selected area of automation.
+ */
+struct AutomationRange
+{
+	double start;
+	double end;
+	double low_fract;
+	double high_fract;
+	TimeAxisView* track; // ref would be better, but ARDOUR::SessionHandlePtr is non-assignable
+	
+	AutomationRange (double s, double e, double l, double h, TimeAxisView* atv)
+		: start (s), end (e), low_fract (l), high_fract (h), track (atv) {}
+};
+
+#endif /* __ardour_gtk_automation_range_h__ */