From 4adc57a51851875f9f236d5ec19893ce61990c57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beat=20K=C3=BCng?= <beat-kueng@gmx.net>
Date: Wed, 27 Jan 2021 10:37:50 +0100
Subject: [PATCH] pid tuning: add mouse wheel zooming

---
 src/QmlControls/PIDTuning.qml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/QmlControls/PIDTuning.qml b/src/QmlControls/PIDTuning.qml
index a498049..064fa76 100644
--- a/src/QmlControls/PIDTuning.qml
+++ b/src/QmlControls/PIDTuning.qml
@@ -254,6 +254,13 @@ RowLayout {
                     var next = chart.mapToValue(Qt.point(mouse.x+1, mouse.y+1))
                     _scaling = next.x - start.x
                 }
+                onWheel: {
+                    if (wheel.angleDelta.y > 0)
+                        chartDisplaySec /= 1.2
+                    else
+                        chartDisplaySec *= 1.2
+                    _xAxis.min = _xAxis.max - chartDisplaySec
+                }
                 onPositionChanged: {
                     if(_startPoint != undefined) {
                         dataTimer.running = false