qml: slider render voids

electrum/gui/qml/components/SwapDialog.qml

@@ -172,7 +172,7 @@ ElDialog {
                 width: swapslider.availableWidth
                 height: implicitHeight
                 radius: 2
-                color: Color.transparent(control.Material.accentColor, 0.33)
+                color: Color.transparent(Material.accentColor, 0.33)
 
                 // full width somehow misaligns with handle, define rangeWidth
                 property int rangeWidth: width - swapslider.leftPadding
@@ -189,6 +189,15 @@ ElDialog {
                     radius: 2
                 }
 
+                Rectangle {
+                    x: - (swapslider.parent.width - 2 * constants.paddingXXLarge) * swaphelper.leftVoid
+                    z: -1
+                    // width makes rectangle go outside the control, into the Layout margins
+                    width: parent.width + (swapslider.parent.width - 2 * constants.paddingXXLarge) * swaphelper.rightVoid
+                    height: parent.height
+                    color: Material.sliderDisabledColor
+                }
+
                 Rectangle {
                     x: swapslider.scenter * parent.rangeWidth
                     y: -4