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livetrax/gtk2_ardour/automation_range.h

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/*
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__ */