Qt 4.8: highlightranges.qml Example File (declarative/modelviews/listview/sections/qml/sections/highlightranges.qml)

Qt Reference Documentation

# highlightranges.qml Example File

declarative/modelviews/listview/sections/qml/sections/highlightranges.qml

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     import QtQuick 1.0
     import "content"

     Rectangle {
         id: root
         property int current: 0
         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 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.
         //
         // 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
             width: 200; height: parent.height
             model: PetsModel {}
             delegate: petDelegate

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

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

             highlight: Rectangle { color: "yellow" }
             currentIndex: root.current
             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: root.current
             onCurrentIndexChanged: root.current = 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 }
             }
         }
     }