Add Import from session -functionality

[ardour.git] / libs / ardour / tempo_map_importer.cc

diff --git a/libs/ardour/tempo_map_importer.cc b/libs/ardour/tempo_map_importer.cc
new file mode 100644 (file)
index 0000000..45f2c90
--- /dev/null
+++ b/libs/ardour/tempo_map_importer.cc
@@ -0,0 +1,108 @@
+/*
+    Copyright (C) 2008 Paul Davis
+    Author: Sakari Bergen
+
+    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.
+
+*/
+
+#include <ardour/tempo_map_importer.h>
+
+#include <sstream>
+
+#include <ardour/session.h>
+#include <pbd/failed_constructor.h>
+#include <pbd/compose.h>
+#include <pbd/error.h>
+
+#include "i18n.h"
+
+using namespace PBD;
+using namespace ARDOUR;
+
+/**** 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
+       bool replace = Prompt (_("This will replace the current tempo map!\nAre you shure you want to do this?"));
+       
+       if (replace) {
+               queued = true;
+       }
+       
+       return replace;
+}
+
+void
+TempoMapImporter::cancel_move ()
+{
+       queued = false;
+}
+
+void
+TempoMapImporter::move ()
+{
+       session.tempo_map().set_state (xml_tempo_map);
+}