highlightranges.qml Example File

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 import QtQuick 2.0
 import "content"

 Rectangle {
     id: root
     property int current: 0
     property bool increasing: true
     // Example index automation for convenience, disabled on click or tap
     SequentialAnimation {
         id: anim
         loops: -1
         running: true
         ScriptAction {
             script: if (increasing) {
                         current++;
                         if (current >= aModel.count -1) {
                             current = aModel.count - 1;
                             increasing = !increasing;
                         }
                     } else {
                         current--;
                         if (current <= 0) {
                             current = 0;
                             increasing = !increasing;
                         }
                     }
         }

         PauseAnimation { duration: 500 }
     }
     MouseArea{
         id: ma
         z: 1
         anchors.fill: parent
         onClicked: { z = 1 - z; if (anim.running) anim.stop(); else anim.restart();}
     }

     width: 320; height: 480

     // This example shows the same model in three different ListView items,
     // with different highlight ranges. The highlight ranges are set by the
     // preferredHighlightBegin and preferredHighlightEnd properties in ListView.
     //
     // The first ListView does not set a highlight range, so its currentItem
     // can move freely within the visible area. If it moves outside the
     // visible area, the view is automatically scrolled to keep the current
     // item visible.
     //
     // The second ListView sets a highlight range which attempts to keep the
     // current item within the bounds of the range. However,
     // items will not scroll beyond the beginning or end of the view,
     // forcing the highlight to move outside the range at the ends.
     //
     // The third ListView sets the highlightRangeMode to StrictlyEnforceRange
     // and sets a range smaller than the height of an item.  This
     // forces the current item to change when the view is flicked,
     // since the highlight is unable to move.
     //
     // All ListViews bind their currentIndex to the root.current property.
     // The first ListView sets root.current whenever its currentIndex changes
     // due to keyboard interaction.
     // Flicking the third ListView with the mouse also changes root.current.
     ListView {
         id: list1
         height: 50; width: parent.width
         model: PetsModel {id: aModel}
         delegate: petDelegate
         orientation: ListView.Horizontal

         highlight: Rectangle { color: "lightsteelblue" }
         currentIndex: root.current
         onCurrentIndexChanged: root.current = currentIndex
         focus: true
     }

     ListView {
         id: list2
         y: 160
         height: 50; width: parent.width
         model: PetsModel {}
         delegate: petDelegate
         orientation: ListView.Horizontal

         highlight: Rectangle { color: "yellow" }
         currentIndex: root.current
         preferredHighlightBegin: 80; preferredHighlightEnd: 220
         highlightRangeMode: ListView.ApplyRange
     }

     ListView {
         id: list3
         y: 320
         height: 50; width: parent.width
         model: PetsModel {}
         delegate: petDelegate
         orientation: ListView.Horizontal

         highlight: Rectangle { color: "yellow" }
         currentIndex: root.current
         onCurrentIndexChanged: root.current = currentIndex
         preferredHighlightBegin: 125; preferredHighlightEnd: 125
         highlightRangeMode: ListView.StrictlyEnforceRange
     }
     // The delegate for each list
     Component {
         id: petDelegate
         Item {
             width: 160
             height: column.height
             Column {
                 id: column
                 Text { text: 'Name: ' + name }
                 Text { text: 'Type: ' + type }
                 Text { text: 'Age: ' + age }
             }

             MouseArea {
                 anchors.fill: parent
                 onClicked: root.current = index
             }
         }
     }
 }