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/*
Copyright (C) 2010 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_progress_h__
#define __ardour_progress_h__
#include <list>
#include "ardour/libardour_visibility.h"
namespace ARDOUR {
/** A class to handle reporting of progress of something */
class LIBARDOUR_API Progress
{
public:
Progress ();
virtual ~Progress () {}
void set_progress (float);
void ascend ();
void descend (float);
bool cancelled () const;
protected:
void cancel ();
private:
/** Report overall progress.
* @param p Current progress (from 0 to 1)
*/
virtual void set_overall_progress (float p) = 0;
struct Level {
Level (float a) : allocation (a), normalised (0) {}
float allocation;
float normalised;
};
std::list<Level> _stack;
bool _cancelled;
};
}
#endif
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