- Qt 5.3
- Qt Quick
- Qt Quick Examples - Positioners
- positioners-attachedproperties.qml Example File
- Qt 5.3.2 Reference Documentation

# positioners-attachedproperties.qml Example File

positioners/positioners-attachedproperties.qml

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
    **     of its contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    import QtQuick 2.0

    Rectangle {
      width: 320
      height: 480

      // Create column with four rectangles, the fourth one is hidden
      Column {
        id: column

        Rectangle {
          id: red
          color: "red"
          width: 100
          height: 100

          Text {
              anchors.left: parent.right
              anchors.leftMargin: 20
              anchors.verticalCenter: parent.verticalCenter
              text: "Index: " + parent.Positioner.index
              + (parent.Positioner.isFirstItem ? " (First)" : "")
              + (parent.Positioner.isLastItem ? " (Last)" : "")
          }

          // When mouse is clicked, display the values of the positioner
          MouseArea {
            anchors.fill: parent
            onClicked: column.showInfo(red.Positioner)
          }
        }

        Rectangle {
          id: green
          color: "green"
          width: 100
          height: 100

          Text {
              anchors.left: parent.right
              anchors.leftMargin: 20
              anchors.verticalCenter: parent.verticalCenter
              text: "Index: " + parent.Positioner.index
              + (parent.Positioner.isFirstItem ? " (First)" : "")
              + (parent.Positioner.isLastItem ? " (Last)" : "")
          }

          // When mouse is clicked, display the values of the positioner
          MouseArea {
            anchors.fill: parent
            onClicked: column.showInfo(green.Positioner)
          }
        }

        Rectangle {
          id: blue
          color: "blue"
          width: 100
          height: 100

          Text {
              anchors.left: parent.right
              anchors.leftMargin: 20
              anchors.verticalCenter: parent.verticalCenter
              text: "Index: " + parent.Positioner.index
              + (parent.Positioner.isFirstItem ? " (First)" : "")
              + (parent.Positioner.isLastItem ? " (Last)" : "")
          }

          // When mouse is clicked, display the values of the positioner
          MouseArea {
            anchors.fill: parent
            onClicked: column.showInfo(blue.Positioner)
          }
        }

        // This rectangle is not visible, so it doesn't have a positioner value
        Rectangle {
          color: "black"
          width: 100
          height: 100
          visible: false
        }

        // Print the index of the child item in the positioner and convenience
        // properties showing if it's the first or last item.
        function showInfo(positioner) {
          console.log("Item Index = " + positioner.index)
          console.log("  isFirstItem = " + positioner.isFirstItem)
          console.log("  isLastItem = " + positioner.isLastItem)
        }
      }
    }