Qt Quick Controls 1 ScrollView Scrolling Issue

[narayanan.krish]

Hello all,

I'm facing an issue in scrolling with Qt Quick Control 1 scrollview. I've 2 touchscreen devices provided by different vendors. Both are running Qt 5.9 on Ubuntu 16.04 64 bit. In one machine I'm able to access the scrollbars (all to scroll up and down), but not able to scroll them in another machine. The following is the sample code I developed to replicate. I would like to understand is there anything specific with the touch driver for the scrolling to work.

@

import QtQuick 2.9
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4

ApplicationWindow {
id:root
visible: true
width: 640
height: 480
title: qsTr("Scroll")

property color scrollBarNormal: "green"
property color scrollBarPressed: "red"

ScrollView {
    id:view
    anchors.fill: parent
    contentItem: lv

    onContentItemChanged:
    {
        console.log("##")
        //contentItem.enabled=false
    }

    style: FusionScrollViewStyle {

    }
}

ListView {
    id:lv
    anchors.fill: parent
    model: 200
    delegate: Delegate {
        width: parent.width
    }
}

}

import QtQuick 2.9
import QtQuick.Controls.Styles 1.4

ScrollViewStyle {
property real uiScale: 1
property int scrollBarWidth: 10 * uiScale
property color scrollBarNormal: "green"
property color scrollBarPressed: "#ec971f"
property real contentMargin: 0

handleOverlap: 0

handle: Item {
    implicitWidth: scrollBarWidth + contentMargin


    Rectangle {
        anchors.fill: parent
        anchors.leftMargin: contentMargin
        anchors.topMargin: 1
        anchors.bottomMargin: 1
        color: styleData.pressed ? scrollBarPressed : scrollBarNormal
    }
}

decrementControl: Item {
    implicitWidth: scrollBarWidth + contentMargin
    implicitHeight: scrollBarWidth

    Item {
        anchors.fill: parent
        anchors.leftMargin: contentMargin

        Rectangle {
            color: styleData.pressed ? scrollBarPressed : scrollBarNormal
            width: parent.width
            height: parent.width / 2
            y: parent.height / 2
        }

        Rectangle {
            anchors.fill: parent
            radius: width / 4
            color: styleData.pressed ? scrollBarPressed : scrollBarNormal
        }

        Text {
            anchors.centerIn: parent
            text: "\uf106"
            //font.family: fontId.name
            color: "white"
            font.pixelSize: parent.width / 2
        }
    }
}

incrementControl: Item {
    implicitWidth: scrollBarWidth + contentMargin
    implicitHeight: scrollBarWidth

    Item {
        anchors.fill: parent
        anchors.leftMargin: contentMargin

        Rectangle {
            color: styleData.pressed ? scrollBarPressed : scrollBarNormal
            width: parent.width
            height: parent.width / 2
        }

        Rectangle {
            anchors.fill: parent
            radius: width / 4
            color: styleData.pressed ? scrollBarPressed : scrollBarNormal
        }

        Text {
            anchors.centerIn: parent
            text: "\uf107"
            //font.family: fontId.name
            color: "white"
            font.pixelSize: parent.width / 2
        }
    }
}

scrollBarBackground: Item {
    implicitWidth: scrollBarWidth + contentMargin

    Rectangle {
        anchors.fill: parent
        anchors.leftMargin: contentMargin
        color: "#d3d3d3"
    }
}

}

Any help is greatly appreciated.

Thanks & Regards,

Nara