import QtQuick
import qs.modules.common

Flickable {
    id: root
    maximumFlickVelocity: 3500
    boundsBehavior: Flickable.DragOverBounds

    property real touchpadScrollFactor: Config?.options.interactions.scrolling.touchpadScrollFactor ?? 100
    property real mouseScrollFactor: Config?.options.interactions.scrolling.mouseScrollFactor ?? 50
    property real mouseScrollDeltaThreshold: Config?.options.interactions.scrolling.mouseScrollDeltaThreshold ?? 120

    MouseArea {
        anchors.fill: parent
        acceptedButtons: Qt.NoButton
        onWheel: function(wheelEvent) {
            const delta = wheelEvent.angleDelta.y / root.mouseScrollDeltaThreshold;
            // The angleDelta.y of a touchpad is usually small and continuous, 
            // while that of a mouse wheel is typically in multiples of ±120.
            var scrollFactor = Math.abs(wheelEvent.angleDelta.y) >= root.mouseScrollDeltaThreshold ? root.mouseScrollFactor : root.touchpadScrollFactor;
            var targetY = root.contentY - delta * scrollFactor;
            targetY = Math.max(0, Math.min(targetY, root.contentHeight - root.height));
            root.contentY = targetY;
        }
    }

    Behavior on contentY {
        NumberAnimation {
            id: scrollAnim
            duration: Appearance.animation.scroll.duration
            easing.type: Appearance.animation.scroll.type
            easing.bezierCurve: Appearance.animation.scroll.bezierCurve
        }
    }
}