From 2260907285284b8c4b5b7cfee9a217ee3ff57785 Mon Sep 17 00:00:00 2001
From: mohamed <mohamed@amaksoud.com>
Date: Wed, 4 Feb 2015 22:37:43 +0100
Subject: [PATCH] adding exportProjectMidi method, internally uses midiexport
 plugin

---
 include/Song.h    |  1 +
 src/core/Song.cpp | 59 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)

diff --git a/include/Song.h b/include/Song.h
index 5da09818a..487e856a6 100644
--- a/include/Song.h
+++ b/include/Song.h
@@ -268,6 +268,7 @@ public slots:
 	void importProject();
 	void exportProject(bool multiExport=false);
 	void exportProjectTracks();
+	void exportProjectMidi();
 
 	void startExport();
 	void stopExport();
diff --git a/src/core/Song.cpp b/src/core/Song.cpp
index 7198416cc..7942b6452 100644
--- a/src/core/Song.cpp
+++ b/src/core/Song.cpp
@@ -47,6 +47,7 @@
 #include "FxMixerView.h"
 #include "GuiApplication.h"
 #include "ImportFilter.h"
+#include "ExportFilter.h"
 #include "InstrumentTrack.h"
 #include "MainWindow.h"
 #include "FileDialog.h"
@@ -1275,6 +1276,64 @@ void Song::exportProject(bool multiExport)
 }
 
 
+void Song::exportProjectMidi()
+{
+	if( isEmpty() )
+	{
+		QMessageBox::information( gui->mainWindow(),
+				tr( "Empty project" ),
+				tr( "This project is empty so exporting makes "
+					"no sense. Please put some items into "
+					"Song Editor first!" ) );
+		return;
+	}
+
+	FileDialog efd( gui->mainWindow() );
+	
+	efd.setFileMode( FileDialog::AnyFile );
+	
+	QStringList types;
+	types << tr("MIDI File (*.mid)");
+	efd.setNameFilters( types );
+	QString base_filename;
+	if( !m_fileName.isEmpty() )
+	{
+		efd.setDirectory( QFileInfo( m_fileName ).absolutePath() );
+		base_filename = QFileInfo( m_fileName ).completeBaseName();
+	}
+	else
+	{
+		efd.setDirectory( ConfigManager::inst()->userProjectsDir() );
+		base_filename = tr( "untitled" );
+	}
+	efd.selectFile( base_filename + ".mid" );
+	efd.setWindowTitle( tr( "Select file for project-export..." ) );
+
+	efd.setAcceptMode( FileDialog::AcceptSave );
+
+
+	if( efd.exec() == QDialog::Accepted && !efd.selectedFiles().isEmpty() && !efd.selectedFiles()[0].isEmpty() )
+	{
+		const QString suffix = ".mid";
+
+		QString export_filename = efd.selectedFiles()[0];
+		if (!export_filename.endsWith(suffix)) export_filename += suffix;
+		
+		// NOTE start midi export
+		
+		// instantiate midi export plugin
+		TrackContainer::TrackList tracks;
+		tracks += Engine::getSong()->tracks();
+		tracks += Engine::getBBTrackContainer()->tracks();
+		ExportFilter *exf = dynamic_cast<ExportFilter *> (Plugin::instantiate("midiexport", NULL, NULL));
+		if (exf==NULL) {
+			qDebug() << "failed to load midi export filter!";
+			return;
+		}
+		exf->tryExport(tracks, Engine::getSong()->getTempo(), export_filename);
+	}
+}
+
 
 
 void Song::updateFramesPerTick()