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+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+ Rosegarden
+ A MIDI and audio sequencer and musical notation editor.
+
+ This program is Copyright 2000-2008
+ Guillaume Laurent <glaurent@telegraph-road.org>,
+ Chris Cannam <cannam@all-day-breakfast.com>,
+ Richard Bown <richard.bown@ferventsoftware.com>
+
+ The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+ Bown to claim authorship of this work have been asserted.
+
+ Other copyrights also apply to some parts of this work. Please
+ see the AUTHORS file and individual file headers for details.
+
+ 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. See the file
+ COPYING included with this distribution for more information.
+*/
+
+#include "EventViewItem.h"
+#include "base/Event.h"
+
+namespace Rosegarden
+{
+
+// Reimplementation of sort for numeric columns - taking the
+// right hand argument from the left is equivalent to the
+// the QString compare().
+//
+int
+EventViewItem::compare(QListViewItem *i, int col, bool ascending) const
+{
+ EventViewItem *ei = dynamic_cast<EventViewItem *>(i);
+ if (!ei) return QListViewItem::compare(i, col, ascending);
+
+ if (col == 0) { // time
+ Rosegarden::Event &e1 = *m_event;
+ Rosegarden::Event &e2 = *ei->m_event;
+ if (e2 < e1) return 1;
+ else if (e1 < e2) return -1;
+ else return 0;
+ } else if (col == 2 || col == 5 || col == 6) { // event type, data1, data2
+ // we have to do string compares even for data1/data2 which are
+ // often numeric, just because they aren't _always_ numeric and
+ // we don't want to prevent the user being able to separate
+ // e.g. crescendo from decrescendo
+ if (key(col, ascending).compare(i->key(col, ascending)) == 0) {
+ return compare(i, 0, ascending);
+ } else {
+ return key(col, ascending).compare(i->key(col, ascending));
+ }
+ } else if (col == 3) { // pitch
+ // numeric comparison for pitch used to work when we only
+ // showed the numeric pitch number, but then we added the MIDI
+ // pitch name as well and that broke plain numeric comparison
+ return key(col, ascending).section(' ', 0, 0).toInt() -
+ i->key(col, ascending).section(' ', 0, 0).toInt();
+ } else { // numeric comparison
+ return key(col, ascending).toInt() - i->key(col, ascending).toInt();
+ }
+}
+
+}