Slider: add property to disable scroll wheel

Add a property to disable the scroll wheel for the Slider.
This is useful if there is a scrollable list of sliders, because scrolling
would be interrupted as soon as the mouse gets above a slider
(whereby scrolling would change the slider value).
By setting this property to false, a user can easily scroll through the list.

[ChangeLog][Slider] add property to disable scroll wheel

Task-number: QTBUG-59271
Change-Id: I9306638ef98f8a0a5035709a67cc1ee40713441a
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

1 files changed, 8 insertions, 1 deletions

diff --git a/tests/auto/controls/data/tst_slider.qml b/tests/auto/controls/data/tst_slider.qml
index 1d7e92d2..4cff6352 100644
--- a/tests/auto/controls/data/tst_slider.qml
+++ b/tests/auto/controls/data/tst_slider.qml
@@ -51,7 +51,7 @@
 import QtQuick 2.6
 import QtTest 1.0
 import QtQuickControlsTests 1.0
-import QtQuick.Controls 1.4
+import QtQuick.Controls 1.6
 import QtQuick.Controls.Private 1.0
 import QtQuick.Controls.Styles 1.4
 
@@ -176,6 +176,13 @@ Item {
             slider.value = 0
             mouseWheel(slider, 5, 5, -40 * ratio, 0)
             compare(slider.value, slider.maximumValue)
+
+            // Mousewheel deactivated
+            slider.value = 0
+            slider.wheelEnabled = false
+            mouseWheel(slider, 5, 5, 4 * ratio, 0)
+            compare(slider.value, 0)
+
             slider.destroy()
         }