FlightDisplayViewVideo.qml 8.98 KB
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/****************************************************************************
 *
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 * (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
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 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/
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import QtQuick                          2.11
import QtQuick.Controls                 2.4
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import QGroundControl                   1.0
import QGroundControl.FlightDisplay     1.0
import QGroundControl.FlightMap         1.0
import QGroundControl.ScreenTools       1.0
import QGroundControl.Controls          1.0
import QGroundControl.Palette           1.0
import QGroundControl.Vehicle           1.0
import QGroundControl.Controllers       1.0
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Item {
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    id:     root
    clip:   true
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    property double _ar:                QGroundControl.videoManager.aspectRatio
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    property bool   _showGrid:          QGroundControl.settingsManager.videoSettings.gridLines.rawValue > 0
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    property var    _videoReceiver:     QGroundControl.videoManager.videoReceiver
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    property var    _dynamicCameras:    activeVehicle ? activeVehicle.dynamicCameras : null
    property bool   _connected:         activeVehicle ? !activeVehicle.connectionLost : false
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    property int    _curCameraIndex:    _dynamicCameras ? _dynamicCameras.currentCamera : 0
    property bool   _isCamera:          _dynamicCameras ? _dynamicCameras.cameras.count > 0 : false
    property var    _camera:            _isCamera ? _dynamicCameras.cameras.get(_curCameraIndex) : null
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    property bool   _hasZoom:           _camera && _camera.hasZoom
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    property int    _fitMode:           QGroundControl.settingsManager.videoSettings.videoFit.rawValue
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    property double _thermalHeightFactor: 0.85 //-- TODO
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    Rectangle {
        id:             noVideo
        anchors.fill:   parent
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        color:          Qt.rgba(0,0,0,0.75)
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        visible:        !(_videoReceiver && _videoReceiver.decoding)
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        QGCLabel {
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            text:               QGroundControl.settingsManager.videoSettings.streamEnabled.rawValue ? qsTr("WAITING FOR VIDEO") : qsTr("VIDEO DISABLED")
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            font.family:        ScreenTools.demiboldFontFamily
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            color:              "white"
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            font.pointSize:     mainIsMap ? ScreenTools.smallFontPointSize : ScreenTools.largeFontPointSize
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            anchors.centerIn:   parent
        }
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        MouseArea {
            anchors.fill: parent
            onDoubleClicked: {
                QGroundControl.videoManager.fullScreen = !QGroundControl.videoManager.fullScreen
            }
        }
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    }
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    Rectangle {
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        anchors.fill:   parent
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        color:          "black"
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        visible:        _videoReceiver && _videoReceiver.decoding
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        function getWidth() {
            //-- Fit Width or Stretch
            if(_fitMode === 0 || _fitMode === 2) {
                return parent.width
            }
            //-- Fit Height
            return _ar != 0.0 ? parent.height * _ar : parent.width
        }
        function getHeight() {
            //-- Fit Height or Stretch
            if(_fitMode === 1 || _fitMode === 2) {
                return parent.height
            }
            //-- Fit Width
            return _ar != 0.0 ? parent.width * (1 / _ar) : parent.height
        }
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        Component {
            id: videoBackgroundComponent
            QGCVideoBackground {
                id:             videoContent
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                objectName:     "videoContent"
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                receiver:       _videoReceiver

                Connections {
                    target:         _videoReceiver
                    onImageFileChanged: {
                        videoContent.grabToImage(function(result) {
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                            if (!result.saveToFile(QGroundControl.videoManager.imageFile)) {
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                                console.error('Error capturing video frame');
                            }
                        });
                    }
                }
                Rectangle {
                    color:  Qt.rgba(1,1,1,0.5)
                    height: parent.height
                    width:  1
                    x:      parent.width * 0.33
                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
                }
                Rectangle {
                    color:  Qt.rgba(1,1,1,0.5)
                    height: parent.height
                    width:  1
                    x:      parent.width * 0.66
                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
                }
                Rectangle {
                    color:  Qt.rgba(1,1,1,0.5)
                    width:  parent.width
                    height: 1
                    y:      parent.height * 0.33
                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
                }
                Rectangle {
                    color:  Qt.rgba(1,1,1,0.5)
                    width:  parent.width
                    height: 1
                    y:      parent.height * 0.66
                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
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                }
            }
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        }
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        Loader {
            // GStreamer is causing crashes on Lenovo laptop OpenGL Intel drivers. In order to workaround this
            // we don't load a QGCVideoBackground object when video is disabled. This prevents any video rendering
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            // code from running. Setting QGCVideoBackground.receiver = null does not work to prevent any
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            // video OpenGL from being generated. Hence the Loader to completely remove it.
            height:             parent.getHeight()
            width:              parent.getWidth()
            anchors.centerIn:   parent
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            visible:            _videoReceiver && _videoReceiver.decoding
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            sourceComponent:    videoBackgroundComponent
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            property bool videoDisabled: QGroundControl.settingsManager.videoSettings.videoSource.rawValue === QGroundControl.settingsManager.videoSettings.disabledVideoSource
        }

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        //-- Thermal Image
        Item {
            id:                 thermalItem
            width:              height * QGroundControl.videoManager.thermalAspectRatio
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            height:             _camera ? (_camera.thermalMode === QGCCameraControl.THERMAL_FULL ? parent.height : (_camera.thermalMode === QGCCameraControl.THERMAL_PIP ? ScreenTools.defaultFontPixelHeight * 12 : parent.height * _thermalHeightFactor)) : 0
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            anchors.centerIn:   parent
            visible:            QGroundControl.videoManager.hasThermal && _camera.thermalMode !== QGCCameraControl.THERMAL_OFF
            function pipOrNot() {
                if(_camera) {
                    if(_camera.thermalMode === QGCCameraControl.THERMAL_PIP) {
                        anchors.centerIn    = undefined
                        anchors.top         = parent.top
                        anchors.topMargin   = mainWindow.header.height + (ScreenTools.defaultFontPixelHeight * 0.5)
                        anchors.left        = parent.left
                        anchors.leftMargin  = ScreenTools.defaultFontPixelWidth * 12
                    } else {
                        anchors.top         = undefined
                        anchors.topMargin   = undefined
                        anchors.left        = undefined
                        anchors.leftMargin  = undefined
                        anchors.centerIn    = parent
                    }
                }
            }
            Connections {
                target:                 _camera
                onThermalModeChanged:   thermalItem.pipOrNot()
            }
            onVisibleChanged: {
                thermalItem.pipOrNot()
            }
            QGCVideoBackground {
                id:             thermalVideo
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                objectName:     "thermalVideo"
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                anchors.fill:   parent
                receiver:       QGroundControl.videoManager.thermalVideoReceiver
                opacity:        _camera ? (_camera.thermalMode === QGCCameraControl.THERMAL_BLEND ? _camera.thermalOpacity / 100 : 1.0) : 0
            }
        }
        //-- Full screen toggle
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        MouseArea {
            anchors.fill: parent
            onDoubleClicked: {
                QGroundControl.videoManager.fullScreen = !QGroundControl.videoManager.fullScreen
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            }
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        }
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        //-- Zoom
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        PinchArea {
            id:             pinchZoom
            enabled:        _hasZoom
            anchors.fill:   parent
            onPinchStarted: pinchZoom.zoom = 0
            onPinchUpdated: {
                if(_hasZoom) {
                    var z = 0
                    if(pinch.scale < 1) {
                        z = Math.round(pinch.scale * -10)
                    } else {
                        z = Math.round(pinch.scale)
                    }
                    if(pinchZoom.zoom != z) {
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                        _camera.stepZoom(z)
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                    }
                }
            }
            property int zoom: 0
        }
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    }
}