Wrapping the path view to beginning and end of view

[Sridhar S L]

Hi,
Im using a pathview to display 5 items out of 10 items from the model in curved path. And highlight is moving across the view so that it can move around 5 items, 0th to 4th index. Once I reach 4th item and if I press down button, items scroll up and highlight stays at the same position(behavior of path view). Similarly when I reach 9th index and press down button, I don't want to get the item 1 in the same position rather I want the highlight to be moved to item 1 and it should be displayed at the beginning of path view. So i tried to achieve it with below logic.

property int previousCurrentIndex: 0
onCurrentIndexChanged: {
var lastIndex = listModel.count - 1
if (currentIndex === 0 && previousCurrentIndex === lastIndex) {
pathView.positionViewAtIndex(currentIndex, PathView.Beginning)
}
else if (currentIndex === lastIndex && previousCurrentIndex === 0) {
pathView.positionViewAtIndex(currentIndex, PathView.End)
}
previousCurrentIndex = currentIndex
}

Though I realized the expected behavior with above snippet, it still not works as expected when I try to scroll further. Position of path view changing based on earlier position.

Could anyone help me whether it is a correct approach or am I missing anything or really its a bug from Qt?

[J.Hilk]

@Sridhar-S-L simply set the currentIndex to 0 once it crosses over...

Window {
    id:root
    visible: true
    width: 640
    height: 480
    title: qsTr("test")


    PathView {
        id: pathView
        anchors.fill: parent

        ListModel{
            id:myModel
            ListElement {name: "0"}
            ListElement {name: "1"}
            ListElement {name: "2"}
            ListElement {name: "3"}
            ListElement {name: "4"}
            ListElement {name: "5"}
            ListElement {name: "6"}
            ListElement {name: "7"}
            ListElement {name: "8"}
            ListElement {name: "9"}
        }

        model: myModel
        delegate: Rectangle {
            width: 50; height: 50
            color: "red"
            Text { text: index }
        }
        pathItemCount: myModel.count
        preferredHighlightBegin: 0.5
        preferredHighlightEnd: 0.5

        path: Path {
                        startX: 0; startY: height / 2
                        PathLine { x: width; y: height / 2 }
                    }

        onCurrentIndexChanged: {
            if (currentIndex === pathItemCount - 1) {
                currentIndex = 0;
            }
        }
    }
}

[Sridhar S L]

@J-Hilk Thank you for the response.
Based on your example, Highlight is kept constant at one position. But I want to scroll between the displayed items in view, set preferredHighlightBegin to 0 and preferredHighlightEnd to 0.85 by setting pathItemCount to 5 where my model contains 10 items. So basically when i press down key, highlight scrolls from index 0 to index 4 by moving the highlight y position (basically items are arranged vertically and in path view by having different x position for each item). Later if I still pressing down, highlight is staying in same position and path view content moves up. Following, after getting 9th index element on highlight and if down key is pressed, i dont want to get 0th item at same position, rather i want highlight should be moved to beginning of path view and 0th index item also should be displayed at top of path view.

Similar to the behavior of List view which behaves based on keyNavigationWraps property.