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/*
Copyright (C) 2024 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dcpomatic_time.h"
#include <memory>
#include <string>
#include <vector>
class Butler;
class DCPTextTrack;
class Film;
/** @class ClosedTextDisplay
* @brief Helper for displaying closed text from a butler.
*
* This class extracts the logic used by the closed text dialogue box,
* mostly to make it more easily testable.
*/
class ClosedTextDisplay
{
public:
void clear();
void set_butler(std::weak_ptr<Butler> butler);
/** Set up the display for a particular time and text track */
bool update(dcpomatic::DCPTime time, boost::optional<DCPTextTrack> track);
/** @return the current closed text lines that should be shown */
std::vector<std::string> const& current() const {
return _current;
}
private:
std::weak_ptr<Butler> _butler;
std::vector<std::string> _current;
boost::optional<dcpomatic::DCPTimePeriod> _current_period;
std::vector<std::string> _next;
boost::optional<dcpomatic::DCPTimePeriod> _next_period;
};
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