finally moved to correct folder...

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@859 0778d3d1-df1d-0410-868b-ea421aaaa00d

src/gui/string_pair_drag.cpp

@@ -0,0 +1,102 @@
+#ifndef SINGLE_SOURCE_COMPILE
+
+/*
+ * string_pair_drag.cpp - class stringPairDrag which provides general support
+ *                        for drag'n'drop of string-pairs and which is the base
+ *                        for all drag'n'drop-actions within LMMS
+ *
+ * Copyright (c) 2005-2007 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * 
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * 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 (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+
+#include <QtCore/QMimeData>
+#include <QtGui/QDragEnterEvent>
+#include <QtGui/QDropEvent>
+
+
+#include "string_pair_drag.h"
+#include "engine.h"
+#include "main_window.h"
+
+
+stringPairDrag::stringPairDrag( const QString & _key, const QString & _value,
+					const QPixmap & _icon, QWidget * _w ) :
+	QDrag( _w )
+{
+	setPixmap( _icon );
+	QString txt = _key + ":" + _value;
+	QMimeData * m = new QMimeData();
+	m->setData( mimeType(), txt.toAscii() );
+	setMimeData( m );
+	start( Qt::IgnoreAction );
+}
+
+
+
+
+stringPairDrag::~stringPairDrag()
+{
+	// during a drag, we might have lost key-press-events, so reset
+	// modifiers of main-win
+	engine::getMainWindow()->clearKeyModifiers();
+	// TODO: do we have to delete anything???
+}
+
+
+
+
+bool stringPairDrag::processDragEnterEvent( QDragEnterEvent * _dee,
+						const QString & _allowed_keys )
+{
+	if( !_dee->mimeData()->hasFormat( mimeType() ) )
+	{
+		return( FALSE );
+	}
+	QString txt = _dee->mimeData()->data( mimeType() );
+	if( _allowed_keys.split( ',' ).contains( txt.section( ':', 0, 0 ) ) )
+	{
+		_dee->acceptProposedAction();
+		return( TRUE );
+	}
+	_dee->ignore();
+	return( FALSE );
+}
+
+
+
+
+QString stringPairDrag::decodeKey( QDropEvent * _de )
+{
+	return( QString( _de->mimeData()->data( mimeType()
+						) ).section( ':', 0, 0 ) );
+}
+
+
+
+
+QString stringPairDrag::decodeValue( QDropEvent * _de )
+{
+	return( QString( _de->mimeData()->data( mimeType()
+						) ).section( ':', 1, -1 ) );
+}
+
+
+#endif