GuidedAltitudeSlider.qml 4.07 KB
Newer Older
DonLakeFlyer's avatar
DonLakeFlyer committed
1 2
/****************************************************************************
 *
3
 * (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
DonLakeFlyer's avatar
DonLakeFlyer committed
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/

import QtQuick                  2.3
import QtQuick.Controls         1.2

import QGroundControl               1.0
import QGroundControl.Controls      1.0
import QGroundControl.Vehicle       1.0

/// Altitude slider for guided change altitude command
Rectangle {
    id:                 _root

    readonly property real _maxAlt: 121.92  // 400 feet
    readonly property real _minAlt: 3

24
    property var  _activeVehicle:       QGroundControl.multiVehicleManager.activeVehicle
25
    property var  _flyViewSettings:     QGroundControl.settingsManager.flyViewSettings
26 27
    property real _vehicleAltitude:     _activeVehicle ? _activeVehicle.altitudeRelative.rawValue : 0
    property bool _fixedWing:           _activeVehicle ? _activeVehicle.fixedWing : false
28 29
    property real _sliderMaxAlt:        _flyViewSettings ? _flyViewSettings.guidedMaximumAltitude.rawValue : 0
    property real _sliderMinAlt:        _flyViewSettings ? _flyViewSettings.guidedMinimumAltitude.rawValue : 0
30
    property bool _flying:              _activeVehicle ? _activeVehicle.flying : false
DonLakeFlyer's avatar
DonLakeFlyer committed
31 32

    function reset() {
33
        altSlider.value = 0
DonLakeFlyer's avatar
DonLakeFlyer committed
34 35
    }

36 37 38 39
    function setToMinimumTakeoff() {
        altField.setToMinimumTakeoff()
    }

DonLakeFlyer's avatar
DonLakeFlyer committed
40 41
    /// Returns the user specified change in altitude from the current vehicle altitude
    function getAltitudeChangeValue() {
DonLakeFlyer's avatar
DonLakeFlyer committed
42
        return altField.newAltitudeMeters - _vehicleAltitude
43 44 45 46 47 48 49 50
    }

    function log10(value) {
        if (value === 0) {
            return 0
        } else {
            return Math.log(value) / Math.LN10
        }
DonLakeFlyer's avatar
DonLakeFlyer committed
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
    }

    Column {
        id:                 headerColumn
        anchors.margins:    _margins
        anchors.top:        parent.top
        anchors.left:       parent.left
        anchors.right:      parent.right

        QGCLabel {
            anchors.left:           parent.left
            anchors.right:          parent.right
            wrapMode:               Text.WordWrap
            horizontalAlignment:    Text.AlignHCenter
            text:                   qsTr("New Alt(rel)")
        }

        QGCLabel {
            id:                         altField
            anchors.horizontalCenter:   parent.horizontalCenter
71
            text:                       newAltitudeAppUnits + " " + QGroundControl.unitsConversion.appSettingsHorizontalDistanceUnitsString
DonLakeFlyer's avatar
DonLakeFlyer committed
72

DonLakeFlyer's avatar
DonLakeFlyer committed
73 74 75 76 77
            property real   altGainRange:           Math.max(_sliderMaxAlt - _vehicleAltitude, 0)
            property real   altLossRange:           Math.max(_vehicleAltitude - _sliderMinAlt, 0)
            property real   altExp:                 Math.pow(altSlider.value, 3)
            property real   altLossGain:            altExp * (altSlider.value > 0 ? altGainRange : altLossRange)
            property real   newAltitudeMeters:      _vehicleAltitude + altLossGain
78
            property string newAltitudeAppUnits:    QGroundControl.unitsConversion.metersToAppSettingsHorizontalDistanceUnits(newAltitudeMeters).toFixed(1)
79 80 81 82

            function setToMinimumTakeoff() {
                altSlider.value = Math.pow(_activeVehicle.minimumTakeoffAltitude() / altGainRange, 1.0/3.0)
            }
DonLakeFlyer's avatar
DonLakeFlyer committed
83 84 85 86 87 88 89 90 91 92 93
        }
    }

    QGCSlider {
        id:                 altSlider
        anchors.margins:    _margins
        anchors.top:        headerColumn.bottom
        anchors.bottom:     parent.bottom
        anchors.left:       parent.left
        anchors.right:      parent.right
        orientation:        Qt.Vertical
94
        minimumValue:       _flying ? -1 : 0
95 96
        maximumValue:       1
        zeroCentered:       true
DonLakeFlyer's avatar
DonLakeFlyer committed
97 98 99 100
        rotation:           180

        // We want slide up to be positive values
        transform: Rotation {
101
            origin.x:   altSlider.width  / 2
DonLakeFlyer's avatar
DonLakeFlyer committed
102 103 104 105 106
            origin.y:   altSlider.height / 2
            angle:      180
        }
    }
}