- Qt 5.5
- Qt Quick
- UI Components: Scroll Bar Example
- ScrollBar.qml Example File
- Qt 5.5.1 Reference Documentation

# ScrollBar.qml Example File

customitems/scrollbar/ScrollBar.qml

    /****************************************************************************
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    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
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    ** This file is part of the examples of the Qt Toolkit.
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    import QtQuick 2.0

    Item {
        id: scrollBar

        // The properties that define the scrollbar's state.
        // position and pageSize are in the range 0.0 - 1.0.  They are relative to the
        // height of the page, i.e. a pageSize of 0.5 means that you can see 50%
        // of the height of the view.
        // orientation can be either Qt.Vertical or Qt.Horizontal
        property real position
        property real pageSize
        property variant orientation : Qt.Vertical

        // A light, semi-transparent background
        Rectangle {
            id: background
            anchors.fill: parent
            radius: orientation == Qt.Vertical ? (width/2 - 1) : (height/2 - 1)
            color: "white"
            opacity: 0.3
        }

        // Size the bar to the required size, depending upon the orientation.
        Rectangle {
            x: orientation == Qt.Vertical ? 1 : (scrollBar.position * (scrollBar.width-2) + 1)
            y: orientation == Qt.Vertical ? (scrollBar.position * (scrollBar.height-2) + 1) : 1
            width: orientation == Qt.Vertical ? (parent.width-2) : (scrollBar.pageSize * (scrollBar.width-2))
            height: orientation == Qt.Vertical ? (scrollBar.pageSize * (scrollBar.height-2)) : (parent.height-2)
            radius: orientation == Qt.Vertical ? (width/2 - 1) : (height/2 - 1)
            color: "black"
            opacity: 0.7
        }
    }