From d9516cd47d23cbb99f34fdb24a3b40ba682b8dc3 Mon Sep 17 00:00:00 2001
From: jeetee <github@jeetee.net>
Date: Wed, 15 Apr 2020 00:18:05 +0200
Subject: [PATCH] resolves #22 - adjust tempo to reference beat

---
 TempoChanges.qml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/TempoChanges.qml b/TempoChanges.qml
index 9717f23..4148b24 100644
--- a/TempoChanges.qml
+++ b/TempoChanges.qml
@@ -23,6 +23,7 @@ MuseScore {
       requiresScore: true
 
       property int margin: 10
+      property int previousBeatIndex: 5
 
       width:  360
       height: 240
@@ -386,6 +387,22 @@ MuseScore {
                         padding.top: 5
                         padding.bottom: 5
                   }
+                  onCurrentIndexChanged: { // update the value fields to match the new beatBase
+                        var changeFactor = beatBase.model.get(currentIndex).mult / beatBase.model.get(previousBeatIndex).mult;
+                        if (startBPMvalue.text == "") {
+                              startBPMvalue.placeholderText = Math.round(getFloatFromInput(startBPMvalue) / changeFactor * 10) / 10;
+                        }
+                        else {
+                              startBPMvalue.text = Math.round(getFloatFromInput(startBPMvalue) / changeFactor * 10) / 10;
+                        }
+                        if (endBPMvalue.text == "") {
+                              endBPMvalue.placeholderText = Math.round(getFloatFromInput(endBPMvalue) / changeFactor * 10) / 10;
+                        }
+                        else {
+                              endBPMvalue.text = Math.round(getFloatFromInput(endBPMvalue) / changeFactor * 10) / 10;
+                        }
+                        previousBeatIndex = currentIndex; // keep track reference for next change
+                  }
             }
 
             Label {