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  1. Qt
  2. QTBUG-73832

ScrollView contentWidth/Height no longer updates when content width/height changes

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P1: Critical P1: Critical
    • 5.12.3
    • 5.12.1
    • Quick: Controls 2
    • None

      The example works in Qt 5.12.0 and does not in 5.12.1.

      Expected:

      1. Open example and click button to add rectangles to the repeater within the ScrollView.
      2. The 'contentWidth' value (displayed on the button) should update, and once the rectangles reach the edge of the ScrollView, it should come scrollable.

      Actual:

      1. Open example and click button to add rectangles to the repeater within the ScrollView.
      2. The 'contentWidth' value (displayed on the button) does not update, and once the rectangles reach the edge of the ScrollView, the ScrollView remains unscrollable.

      This means that a ScrollView can no longer dynamically update its scrollability when the content within it changes. 

      Example for contentWidth:

      import QtQuick 2.9
import QtQuick.Controls 2.2

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

    Button {
        anchors.top: parent.top
        id: button
        text: "Click this to add boxes. (contentWidth = " + scrollView.contentWidth + ")"
        onClicked: repeater.model += 1
    }

    ScrollView {
        id: scrollView
        anchors.top: button.bottom
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.bottom: parent.right

        Row {
            spacing: 2
            Repeater {
                id: repeater
                model: 5
                delegate: Rectangle {
                    height: 50
                    width: 50
                    color: "red"
                }
            }
        }
    }
}

       

      Example for contentHeight:

      import QtQuick 2.9
import QtQuick.Controls 2.2

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

    Button {
        anchors.top: parent.top
        id: button
        text: "Click this to add boxes. (contentHeight = " + scrollView.contentHeight + ")"
        onClicked: repeater.model += 1
    }

    ScrollView {
        id: scrollView
        anchors.top: button.bottom
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.bottom: parent.right

        Column {
            spacing: 2
            Repeater {
                id: repeater
                model: 5
                delegate: Rectangle {
                    height: 50
                    width: 50
                    color: "red"
                }
            }
        }
    }
}

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            richard Richard Moe Gustavsen
            danielserato Daniel McBride
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              Created:
              Updated:
              Resolved:

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