QML图表视图中的自定义工具提示工具提示

import QtQuick 2.0
import QtCharts 2.0

ChartView {
    id: chartView
    width: 400
    height: 300

    LineSeries {
        XYPoint { x: 0; y: 0 }
        XYPoint { x: 1; y: 1 }
        XYPoint { x: 2; y: 2 }
        XYPoint { x: 3; y: 3 }

        // 添加鼠标悬停事件处理器
        onHovered: {
            // 更新工具提示内容
            tooltip.text = "X: " + hoveredPoint.x + ", Y: " + hoveredPoint.y;

            // 设置工具提示位置
            tooltip.x = mouseX;
            tooltip.y = mouseY;

            // 显示工具提示
            tooltip.visible = true;
        }
    }

    Rectangle {
        id: tooltip
        width: 100
        height: 50
        color: "lightgray"
        border.color: "black"
        visible: false

        Text {
            anchors.centerIn: parent
            text: ""
        }
    }
}