From 68cf5098fb3274437e793ec467e9d6f711fbc34d Mon Sep 17 00:00:00 2001
From: Refuhr <moritz.ruffer@web.de>
Date: Fri, 19 Jun 2026 13:44:22 +0200
Subject: [PATCH] feat: sort multiplexed values by multiplex value ascending

---
 dbc/dbchandler.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/dbc/dbchandler.cpp b/dbc/dbchandler.cpp
index 7b8ad4a..98fca95 100644
--- a/dbc/dbchandler.cpp
+++ b/dbc/dbchandler.cpp
@@ -115,8 +115,21 @@ int DBCSignalHandler::getCount()
     return sigs.count();
 }
 
+// sort by multiplex value ascending, -1 if non multiplexed/multiplexor
+static int signalMuxSortValue(DBC_SIGNAL &sig)
+{
+    if (sig.isMultiplexed)
+        return sig.getSimpleMultiplexValue();
+    return -1;
+}
+
 bool signal_cmp(DBC_SIGNAL a, DBC_SIGNAL b)
 {
+    int muxA = signalMuxSortValue(a);
+    int muxB = signalMuxSortValue(b);
+    if (muxA != muxB)
+        return muxA < muxB;
+
     if (a.startBit == b.startBit) {
         return QString::compare(a.name, b.name, Qt::CaseInsensitive) < 0;
     } else {