Qt Reference Documentation

highlightranges.qml Example File

declarative/modelviews/listview/highlightranges.qml
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 import Qt 4.7
 import "content"

 Rectangle {
     width: 600; height: 300

     // 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 second and third ListViews set their currentIndex to be the
     // same as the first. The first ListView is given keyboard focus.
     //
     // 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 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.
     //
     // Note that the first ListView sets its currentIndex to be equal to
     // the third ListView's currentIndex.  By flicking the third ListView with
     // the mouse, the current index of the first ListView will be changed.

     ListView {
         id: list1
         width: 200; height: parent.height
         model: PetsModel {}
         delegate: petDelegate

         highlight: Rectangle { color: "lightsteelblue" }
         currentIndex: list3.currentIndex
         focus: true
     }

     ListView {
         id: list2
         x: list1.width
         width: 200; height: parent.height
         model: PetsModel {}
         delegate: petDelegate

         highlight: Rectangle { color: "yellow" }
         currentIndex: list1.currentIndex
         preferredHighlightBegin: 80; preferredHighlightEnd: 220
         highlightRangeMode: ListView.ApplyRange
     }

     ListView {
         id: list3
         x: list1.width + list2.width
         width: 200; height: parent.height
         model: PetsModel {}
         delegate: petDelegate

         highlight: Rectangle { color: "yellow" }
         currentIndex: list1.currentIndex
         preferredHighlightBegin: 125; preferredHighlightEnd: 125
         highlightRangeMode: ListView.StrictlyEnforceRange
     }

     // The delegate for each list
     Component {
         id: petDelegate
         Column {
             width: 200
             Text { text: 'Name: ' + name }
             Text { text: 'Type: ' + type }
             Text { text: 'Age: ' + age }
         }
     }
 }
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