libs/ardour/tempo_map_importer.cc

   1 /*
   2     Copyright (C) 2008 Paul Davis
   3     Author: Sakari Bergen
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #include "ardour/tempo_map_importer.h"
  22
  23 #include <sstream>
  24
  25 #include "ardour/session.h"
  26 #include "pbd/failed_constructor.h"
  27 #include "pbd/compose.h"
  28 #include "pbd/error.h"
  29
  30 #include "i18n.h"
  31
  32 using namespace std;
  33 using namespace PBD;
  34 using namespace ARDOUR;
  35
  36 /**** Handler ***/
  37 TempoMapImportHandler::TempoMapImportHandler (XMLTree const & source, Session & session) :
  38   ElementImportHandler (source, session)
  39 {
  40         XMLNode const * root = source.root();
  41         XMLNode const * tempo_map;
  42
  43         if (!(tempo_map = root->child (X_("TempoMap")))) {
  44                 throw failed_constructor();
  45         }
  46
  47         elements.push_back (ElementPtr ( new TempoMapImporter (source, session, *tempo_map)));
  48 }
  49
  50 string
  51 TempoMapImportHandler::get_info () const
  52 {
  53         return _("Tempo map");
  54 }
  55
  56 /*** TempoMapImporter ***/
  57 TempoMapImporter::TempoMapImporter (XMLTree const & source, Session & session, XMLNode const & node) :
  58   ElementImporter (source, session),
  59   xml_tempo_map (node)
  60 {
  61         name = _("Tempo Map");
  62 }
  63
  64 string
  65 TempoMapImporter::get_info () const
  66 {
  67         std::ostringstream oss;
  68         unsigned int tempos = 0;
  69         unsigned int meters = 0;
  70         XMLNodeList children = xml_tempo_map.children();
  71
  72         for (XMLNodeIterator it = children.begin(); it != children.end(); it++) {
  73                 if ((*it)->name() == "Tempo") {
  74                         tempos++;
  75                 } else if ((*it)->name() == "Meters") {
  76                         meters++;
  77                 }
  78         }
  79
  80         // return info
  81         oss << _("Tempo marks: ") << tempos << _("\nMeter marks: ") << meters;
  82
  83         return oss.str();
  84 }
  85
  86 bool
  87 TempoMapImporter::_prepare_move ()
  88 {
  89         // Prompt user for verification
  90         boost::optional<bool> replace = Prompt (_("This will replace the current tempo map!\nAre you shure you want to do this?"));
  91         return replace.get_value_or (false);
  92 }
  93
  94 void
  95 TempoMapImporter::_cancel_move ()
  96 {
  97 }
  98
  99 void
 100 TempoMapImporter::_move ()
 101 {
 102         session.tempo_map().set_state (xml_tempo_map, Stateful::current_state_version);
 103 }