Work around the lack of onValueModified signal in QQC 1

SpinBox in QtQuick Controls 2 has a signal that is emitted when the
value is changed explicitly by the user. In QtQuick Controls 1, there is
no such a signal.

The most straightforward thing would be to switch to QQC2, but the
problem is that the SpinBox API in there is extremely stripped down. You
will need to re-invent the wheel to get basic functionality.

This fixes a bug where the update interval is reset to 1 unexpectedly.

src/package/contents/ui/config.qml

@@ -115,13 +115,20 @@ ColumnLayout {
  }
 
  QtControls.SpinBox {
+ property bool __initialized: false
  id: updateIntervalSpinBox
  Kirigami.FormData.label: i18nd("plasma_wallpaper_com.github.zzag.dynamic", "Update Every:")
  maximumValue: 360
  minimumValue: 1
  suffix: i18ndp("plasma_wallpaper_com.github.zzag.dynamic", " minute", " minutes", value)
- onValueChanged: cfg_UpdateInterval = value * 60000
- Component.onCompleted: value = wallpaper.configuration.UpdateInterval / 60000
+ onValueChanged: {
+ if (__initialized)
+ cfg_UpdateInterval = value * 60000;
+ }
+ Component.onCompleted: {
+ value = cfg_UpdateInterval / 60000;
+ __initialized = true;
+ }
  }
  }