QGC启动时 qml 界面加载顺序

1，Main.cc

QGCApplication*app=new QGCApplication(argc,argv,runUnitTests);,

 

2，QGCApplication.cc

void QGCApplication::_initCommon(void) //将 C++类 注册为 QML可识别的类型

{
    

    QSettings settings;

    // Register our Qml objects

    //qmlRegisterType 注册可实例化的对象类型

    qmlRegisterType     ("QGroundControl.Palette", 1, 0, "QGCPalette");

    qmlRegisterType  ("QGroundControl.Palette", 1, 0, "QGCMapPalette");

    //qmlRegisterUncreatableType 注册不可被实例化的具有名称的C++类型，但是这样的类型依然可以作为QML类型系统可识别的一种类型。如果该类型的枚举或者附加特性需要在QML中使用，但是类型本身不应被实例化，就需要使用这种方式进行注册

    qmlRegisterUncreatableType    ("QGroundControl",                  1, 0, "CoordinateVector",       "Reference only");

    qmlRegisterUncreatableType  ("QGroundControl",                  1, 0, "QmlObjectListModel",     "Reference only");

    qmlRegisterUncreatableType  ("QGroundControl",                  1, 0, "MissionCommandTree",     "Reference only");

    qmlRegisterUncreatableType     ("QGroundControl.AutoPilotPlugin",      1, 0, "AutoPilotPlugin",        "Reference only");

    qmlRegisterUncreatableType    ("QGroundControl.AutoPilotPlugin",      1, 0, "VehicleComponent",       "Reference only");

    qmlRegisterUncreatableType             ("QGroundControl.Vehicle",              1, 0, "Vehicle",                "Reference only");

    qmlRegisterUncreatableType         ("QGroundControl.Vehicle",              1, 0, "MissionItem",            "Reference only");

    qmlRegisterUncreatableType      ("QGroundControl.Vehicle",              1, 0, "MissionManager",         "Reference only");

    qmlRegisterUncreatableType    ("QGroundControl.Vehicle",              1, 0, "ParameterManager",       "Reference only");

    qmlRegisterUncreatableType     ("QGroundControl.JoystickManager",      1, 0, "JoystickManager",        "Reference only");

    qmlRegisterUncreatableType            ("QGroundControl.JoystickManager",      1, 0, "Joystick",               "Reference only");

    qmlRegisterUncreatableType  ("QGroundControl.QGCPositionManager",   1, 0, "QGCPositionManager",     "Reference only");

    qmlRegisterUncreatableType       ("QGroundControl.FlightMap",            1, 0, "QGCMapPolygon",          "Reference only");

    qmlRegisterUncreatableType   ("QGroundControl.Controllers",          1, 0, "MissionController",      "Reference only");

    qmlRegisterUncreatableType  ("QGroundControl.Controllers",          1, 0, "GeoFenceController",     "Reference only");

    qmlRegisterUncreatableType("QGroundControl.Controllers",          1, 0, "RallyPointController",    "Reference only");

    qmlRegisterType      ("QGroundControl.Controllers", 1, 0, "ParameterEditorController");

    qmlRegisterType     ("QGroundControl.Controllers", 1, 0, "ESP8266ComponentController");

    qmlRegisterType          ("QGroundControl.Controllers", 1, 0, "ScreenToolsController");

    qmlRegisterType           ("QGroundControl.Controllers", 1, 0, "PlanElemementMasterController");

    qmlRegisterType         ("QGroundControl.Controllers", 1, 0, "ValuesWidgetController");

    qmlRegisterType        ("QGroundControl.Controllers", 1, 0, "QGCFileDialogController");

    qmlRegisterType     ("QGroundControl.Controllers", 1, 0, "RCChannelMonitorController");

    qmlRegisterType       ("QGroundControl.Controllers", 1, 0, "JoystickConfigController");

    qmlRegisterType          ("QGroundControl.Controllers", 1, 0, "LogDownloadController");

    qmlRegisterType     ("QGroundControl.Controllers", 1, 0, "SyslinkComponentController");

#ifndef __mobile__

    qmlRegisterType           ("QGroundControl.Controllers", 1, 0, "ViewWidgetController");

    qmlRegisterType  ("QGroundControl.Controllers", 1, 0, "CustomCommandWidgetController");

    qmlRegisterType      ("QGroundControl.Controllers", 1, 0, "FirmwareUpgradeController");

    qmlRegisterType               ("QGroundControl.Controllers", 1, 0, "GeoTagController");

    qmlRegisterType       ("QGroundControl.Controllers", 1, 0, "MavlinkConsoleController");

#endif

    // Register Qml Singletons

    //注册不能从QML导入的单例类型

    qmlRegisterSingletonType   ("QGroundControl",                          1, 0, "QGroundControl",         qgroundcontrolQmlGlobalSingletonFactory);

    qmlRegisterSingletonType     ("QGroundControl.ScreenToolsController",    1, 0, "ScreenToolsController",  screenToolsControllerSingletonFactory);

    qmlRegisterSingletonType       ("QGroundControl.Mavlink",                  1, 0, "Mavlink",                mavlinkQmlSingletonFactory);

}

 

_toolbox=new QGCToolbox(this);

 

3，QGCToolbox.cc

 

void QGCToolbox::_scanAndLoadPlugins(QGCApplication* app)

{
    

    //-- No plugins found, use default instance

    _corePlugin = new QGCCorePlugin(app, app->toolbox());

}

4，QGCCorePlugin.cc->

QQmlApplicationEngine*QGCCorePlugin::createRootWindow(QObject*parent){

QQmlApplicationEngine* pEngine = new QQmlApplicationEngine(parent);

    pEngine->addImportPath("qrc:/qml");

    pEngine->rootContext()->setContextProperty("joystickManager", qgcApp()->toolbox()->joystickManager());

    pEngine->rootContext()->setContextProperty("debugMessageModel", AppMessages::getModel());

    pEngine->load(QUrl(QStringLiteral("qrc:/qml/MainWindowNative.qml")));

    return pEngine;

}

 5，MainWindowNative.qml

Window{  //主窗体

Loader{

       id:            mainWindowInner

       anchors.fill:  parent

       source:        "MainWindowInner.qml"

       Connections{

           target:mainWindowInner.item

           onReallyClose:{

                _forceClose=true

                _rootWindow.close()

           }

       }

} 

6，MainWindowinner.qml

MainToolBar{

       id:                toolBar

       height:            ScreenTools.toolbarHeight

       anchors.left:      parent.left

       anchors.right:     parent.right

       anchors.top:       parent.top

       opacity:           planToolBar.visible?0:1

       z:                 QGroundControl.zOrderTopMost

 

       Component.onCompleted: ScreenTools.availableHeight=               parent.height-toolBar.height

       onShowSettingsView:    mainWindow.showSettingsView()//设置

       onShowSetupView:       mainWindow.showSetupView()//设置

       onShowPlanView:        mainWindow.showPlanView()//任务规划

       onShowFlyView:         mainWindow.showFlyView()//飞行

        onShowAnalyzeView:     mainWindow.showAnalyzeView()//分析