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livetrax/libs/ardour/tempo_map_importer.cc
Paul Davis 7c3268d12f temporal: TempoMap::use() returns a const ptr to enforce semantics (library version)
This commit leaves two issues outstanding:

1. unclear/ugly semantics for drag operations that reset the GUI thread's tempo map to the writable copy
2. undo/redo for the tempo map

These will be addressed in future commits
2022-04-08 11:58:04 -06:00

106 lines
2.8 KiB
C++

/*
* Copyright (C) 2008 Sakari Bergen <sakari.bergen@beatwaves.net>
* Copyright (C) 2009-2012 David Robillard <d@drobilla.net>
* Copyright (C) 2009-2016 Paul Davis <paul@linuxaudiosystems.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "ardour/tempo_map_importer.h"
#include <sstream>
#include "ardour/session.h"
#include "ardour/tempo.h"
#include "pbd/failed_constructor.h"
#include "pbd/i18n.h"
using namespace std;
using namespace PBD;
using namespace ARDOUR;
using namespace Temporal;
/**** Handler ***/
TempoMapImportHandler::TempoMapImportHandler (XMLTree const & source, Session & session) :
ElementImportHandler (source, session)
{
XMLNode const * root = source.root();
XMLNode const * tempo_map;
if (!(tempo_map = root->child (X_("TempoMap")))) {
throw failed_constructor();
}
elements.push_back (ElementPtr ( new TempoMapImporter (source, session, *tempo_map)));
}
string
TempoMapImportHandler::get_info () const
{
return _("Tempo map");
}
/*** TempoMapImporter ***/
TempoMapImporter::TempoMapImporter (XMLTree const & source, Session & session, XMLNode const & node) :
ElementImporter (source, session),
xml_tempo_map (node)
{
name = _("Tempo Map");
}
string
TempoMapImporter::get_info () const
{
std::ostringstream oss;
unsigned int tempos = 0;
unsigned int meters = 0;
XMLNodeList children = xml_tempo_map.children();
for (XMLNodeIterator it = children.begin(); it != children.end(); it++) {
if ((*it)->name() == "Tempo") {
tempos++;
} else if ((*it)->name() == "Meters") {
meters++;
}
}
// return info
oss << _("Tempo marks: ") << tempos << _("\nMeter marks: ") << meters;
return oss.str();
}
bool
TempoMapImporter::_prepare_move ()
{
// Prompt user for verification
boost::optional<bool> replace = Prompt (_("This will replace the current tempo map!\nAre you sure you want to do this?"));
return replace.value_or (false);
}
void
TempoMapImporter::_cancel_move ()
{
}
void
TempoMapImporter::_move ()
{
TempoMap::WritableSharedPtr tmap (TempoMap::write_copy());
tmap->set_state (xml_tempo_map, Stateful::current_state_version);
TempoMap::update (tmap);
}