// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

import QtQuick 2.0
import QtCharts 2.0

Item {
    anchors.fill: parent

    //![1]
    ChartView {
        title: "Accurate Historical Data"
        anchors.fill: parent
        legend.visible: false
        antialiasing: true

        LineSeries {
            axisX: DateTimeAxis {
                format: "yyyy MMM"
                tickCount: 5
            }
            axisY: ValueAxis {
                min: 0
                max: 150
            }

            // Please note that month in JavaScript months are zero based, so 2 means March
            XYPoint { x: toMsecsSinceEpoch(new Date(1950, 2, 15)); y: 5 }
            XYPoint { x: toMsecsSinceEpoch(new Date(1970, 0, 1)); y: 50 }
            XYPoint { x: toMsecsSinceEpoch(new Date(1987, 12, 31)); y: 102 }
            XYPoint { x: toMsecsSinceEpoch(new Date(1998, 7, 1)); y: 100 }
            XYPoint { x: toMsecsSinceEpoch(new Date(2012, 8, 2)); y: 110 }
        }
    }

    // DateTimeAxis is based on QDateTimes so we must convert our JavaScript dates to
    // milliseconds since epoch to make them match the DateTimeAxis values
    function toMsecsSinceEpoch(date) {
        var msecs = date.getTime();
        return msecs;
    }
    //![1]
}
