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import QtQuick 2.5
import QtCharts 2.1
import SensorTag.DataProvider 1.0

BaseChart {
    id: magnetHolderRect

    property int magneticSeriesIndex: 0
    property int maxNumOfMagnReadings: 24

    readonly property color chartColor: "#15bdff"
    readonly property string xColor: "green"
    readonly property string yColor: "purple"
    readonly property string zColor: "yellow"
    readonly property color textColor: "white"

    onSensorChanged: if (sensor) sensor.magnetometerMicroTChanged.connect(contentItem.updateMagneticGraph)

    title: qsTr("Magnetometer")
    rightSide: true

    content: Item {
        anchors.fill: parent

        function updateMagneticGraph()
        {
            magnSeriesX.append(magneticSeriesIndex, sensor.magnetometerMicroT_xAxis);
            magnSeriesY.append(magneticSeriesIndex, sensor.magnetometerMicroT_yAxis);
            magnSeriesZ.append(magneticSeriesIndex, sensor.magnetometerMicroT_zAxis);

            if (magneticSeriesIndex >= maxNumOfMagnReadings) {
                magnSeriesX.remove(magnSeriesX.at(magneticSeriesIndex-maxNumOfMagnReadings));
                magnSeriesY.remove(magnSeriesY.at(magneticSeriesIndex-maxNumOfMagnReadings));
                magnSeriesZ.remove(magnSeriesY.at(magneticSeriesIndex-maxNumOfMagnReadings));
                valueAxisX.min++;
                valueAxisX.max++;
            }
            magneticSeriesIndex++;
        }

        Text {
            id: historyLabel
            text: "MAGNETIC FIELD HISTORY"
            color: textColor
            anchors.top: parent.top
            anchors.topMargin: 16
            anchors.left: parent.left
            anchors.leftMargin: chartView.plotArea.x - 40
        }

        ChartView {
            id: chartView

            anchors.top: historyLabel.bottom
            anchors.topMargin: -26
            anchors.bottom: parent.bottom
            anchors.bottomMargin: 8
            anchors.left: parent.left
            anchors.leftMargin: -40
            anchors.right: parent.right
            anchors.rightMargin: -28
            antialiasing: true
            backgroundColor: "transparent"
            legend.visible: false
            margins.top: 0
            margins.right: 0

            // Hide the value axis labels; labels are drawn separately.
            ValueAxis {
                id: valueAxisX
                labelsVisible: false
                gridVisible: false
                min: 0
                max: maxNumOfMagnReadings + 1
                tickCount: 2
                color: chartColor
            }

            ValueAxis {
                id: valueAxisY

                min: 0
                max: 1000
                color: chartColor
                gridLineColor: "darkgray"
                labelsVisible: false
                tickCount: 11
            }

            Column {
                id: col

                property int step: (valueAxisY.max - valueAxisY.min) / (valueAxisY.tickCount - 1)

                spacing: -9
                y: chartView.plotArea.y - 10
                x: 30

                Repeater {
                    model: valueAxisY.tickCount

                    Text {
                        text: valueAxisY.max - index * col.step
                        horizontalAlignment: Text.AlignRight
                        width: 50
                        color: textColor
                    }
                }
            }

            SplineSeries {
                id: magnSeriesX
                axisX: valueAxisX
                axisY: valueAxisY
                width: 1
                color: xColor
                name: "Magnet X"
            }
            SplineSeries {
                id: magnSeriesY
                axisX: valueAxisX
                axisY: valueAxisY
                width: 1
                color: yColor
                name: "Magnet Y"
            }
            SplineSeries {
                id: magnSeriesZ
                axisX: valueAxisX
                axisY: valueAxisY
                width: 1
                color: zColor
                name: "Magnet Z"
            }
        }

        Text {
            text: "µT"
            anchors.top: xLabelRow.top
            anchors.right: xLabelRow.left
            anchors.rightMargin: 8
            color: textColor
            width: 20
            font.pixelSize: 14
        }

        Row {
            id: xLabelRow
            anchors.bottom: parent.bottom
            anchors.bottomMargin: 28
            anchors.left: historyLabel.left
            anchors.right: parent.right

            Text {
                id: xLabel
                horizontalAlignment: Text.AlignHCenter
                text: "<font color=\"" + xColor + "\">X<br><font color=\"white\">" + (sensor ? sensor.magnetometerMicroT_xAxis : 0)
                lineHeight: 0.7
                width: (magnetHolderRect.width - xLabelRow.x) / 3
            }

            Text {
                horizontalAlignment: Text.AlignHCenter
                text: "<font color=\"" + yColor + "\">Y<br><font color=\"white\">" + (sensor ? sensor.magnetometerMicroT_yAxis : 0)
                lineHeight: 0.7
                width: xLabel.width
            }

            Text {
                horizontalAlignment: Text.AlignHCenter
                text: "<font color=\"" + zColor + "\">Z<br><font color=\"white\">" + (sensor ? sensor.magnetometerMicroT_zAxis : 0)
                lineHeight: 0.7
                width: xLabel.width
            }
        }
    }
}