64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
/*
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* Copyright (C) 2010 Carl Hetherington <carl@carlh.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _libpbd_progress_h_
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#define _libpbd_progress_h_
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#include <list>
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#include "pbd/libpbd_visibility.h"
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namespace PBD {
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/** A class to handle reporting of progress of something */
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class LIBPBD_API Progress
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{
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public:
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Progress ();
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virtual ~Progress () {}
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void set_progress (float);
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void ascend ();
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void descend (float);
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bool cancelled () const;
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protected:
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void cancel ();
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private:
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/** Report overall progress.
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* @param p Current progress (from 0 to 1)
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*/
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virtual void set_overall_progress (float p) = 0;
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struct Level {
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Level (float a) : allocation (a), normalised (0) {}
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float allocation;
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float normalised;
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};
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std::list<Level> _stack;
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bool _cancelled;
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};
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}
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#endif
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