sInstance = this;

QgsRuntimeProfiler *profiler = QgsApplication::profiler();

mUserProfileManager = new QgsUserProfileManager( QString(), this );

mUserProfileManager->setRootLocation( rootProfileLocation );

mUserProfileManager->setActiveUserProfile( activeProfile );

endProfile();

// start the network logger early, we want all requests logged!

mNetworkLogger = new QgsNetworkLogger( QgsNetworkAccessManager::instance(), this );

endProfile();

// load GUI: actions, menus, toolbars

setupUi( this );

// because mActionToggleMapOnly can hide the menu (thereby disabling menu actions),

// we attach the following actions to the MainWindow too (to be able to come back)

//////////

mSplash->showMessage( tr( "Checking database" ), Qt::AlignHCenter | Qt::AlignBottom );

qApp->processEvents();

// Do this early on before anyone else opens it and prevents us copying it

endProfile();

// Create the themes folder for the user

QgsApplication::createThemeFolder();

endProfile();

QgsSettings settings;

// set up stylesheet builder and apply saved or default style options

mStyleSheetBuilder = new QgisAppStyleSheet( this );

connect( mStyleSheetBuilder, &QgisAppStyleSheet::appStyleSheetChanged,

centralLayout->setContentsMargins( 0, 0, 0, 0 );

// "theMapCanvas" used to find this canonical instance later

mMapCanvas = new QgsMapCanvas( centralWidget );

mMapCanvas->setObjectName( QStringLiteral( "theMapCanvas" ) );

mProjOpen = settings.value( QStringLiteral( "qgis/projOpenAtLaunch" ), 0 ).toInt();

// a bar to warn the user with non-blocking messages

mInfoBar = new QgsMessageBar( centralWidget );

mInfoBar->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Fixed );

centralLayout->addWidget( mInfoBar, 0, 0, 1, 1 );

endProfile();

mWelcomePage = new QgsWelcomePage( skipVersionCheck );

connect( mWelcomePage, &QgsWelcomePage::projectRemoved, this, [ this ]( int row )

{

mCentralContainer->setCurrentIndex( mProjOpen ? 0 : 1 );

// User Input Dock Widget

mUserInputDockWidget = new QgsUserInputWidget( mMapCanvas );

mUserInputDockWidget->setObjectName( QStringLiteral( "UserInputDockWidget" ) );

//set the focus to the map canvas

mMapCanvas->setFocus();

mLayerTreeView = new QgsLayerTreeView( this );

mLayerTreeView->setObjectName( QStringLiteral( "theLayerTreeView" ) ); // "theLayerTreeView" used to find this canonical instance later

endProfile();

// create undo widget

mUndoDock = new QgsDockWidget( tr( "Undo/Redo" ), this );

QShortcut *showUndoDock = new QShortcut( QKeySequence( tr( "Ctrl+5" ) ), this );

connect( showUndoDock, &QShortcut::activated, mUndoDock, &QgsDockWidget::toggleUserVisible );

endProfile();

// Advanced Digitizing dock

mAdvancedDigitizingDockWidget = new QgsAdvancedDigitizingDockWidget( mMapCanvas, this );

mAdvancedDigitizingDockWidget->setWindowTitle( tr( "Advanced Digitizing" ) );

mAdvancedDigitizingDockWidget->setObjectName( QStringLiteral( "AdvancedDigitizingTools" ) );

endProfile();

// Statistical Summary dock

mStatisticalSummaryDockWidget = new QgsStatisticalSummaryDockWidget( this );

mStatisticalSummaryDockWidget->setObjectName( QStringLiteral( "StatisticalSummaryDockWidget" ) );

endProfile();

// Bookmarks dock

mBookMarksDockWidget = new QgsBookmarks( this );

mBookMarksDockWidget->setObjectName( QStringLiteral( "BookmarksDockWidget" ) );

endProfile();

mSnappingUtils = new QgsMapCanvasSnappingUtils( mMapCanvas, this );

mMapCanvas->setSnappingUtils( mSnappingUtils );

connect( QgsProject::instance(), &QgsProject::snappingConfigChanged, mSnappingUtils, &QgsSnappingUtils::setConfig );

applyDefaultSettingsToCanvas( mMapCanvas );

functionProfile( &QgisApp::createOverview, this, QStringLiteral( "Create overview" ) );

functionProfile( &QgisApp::createMapTips, this, QStringLiteral( "Create map tips" ) );

functionProfile( &QgisApp::createDecorations, this, QStringLiteral( "Create decorations" ) );

functionProfile( &QgisApp::initNativeProcessing, this, QStringLiteral( "Initialize native processing" ) );

functionProfile( &QgisApp::initLayouts, this, QStringLiteral( "Initialize layouts support" ) );

mGeometryValidationService = qgis::make_unique<QgsGeometryValidationService>( QgsProject::instance() );

mGeometryValidationService->setMessageBar( mInfoBar );

}

// initialize the plugin manager

mPluginManager = new QgsPluginManager( this, restorePlugins );

endProfile();

addDockWidget( Qt::LeftDockWidgetArea, mUndoDock );

mUndoDock->hide();

mMapStylingDock = new QgsDockWidget( this );

mMapStylingDock->setWindowTitle( tr( "Layer Styling" ) );

mMapStylingDock->setObjectName( QStringLiteral( "LayerStyling" ) );

mMapStylingDock->hide();

endProfile();

mDevToolsDock = new QgsDockWidget( this );

mDevToolsDock->setWindowTitle( tr( "Debugging/Development Tools" ) );

mDevToolsDock->setObjectName( QStringLiteral( "DevTools" ) );

mDevToolsDock->hide();

endProfile();

mSnappingDialog = new QgsSnappingWidget( QgsProject::instance(), mMapCanvas, this );

connect( mSnappingDialog, &QgsSnappingWidget::snappingConfigChanged, QgsProject::instance(), [ = ] { QgsProject::instance()->setSnappingConfig( mSnappingDialog->config() ); } );

QString mainSnappingWidgetMode = QgsSettings().value( QStringLiteral( "/qgis/mainSnappingWidgetMode" ), "dialog" ).toString();

#ifdef WITH_BINDINGS

if ( mPythonUtils && mPythonUtils->isEnabled() )

{

// initialize the plugin installer to start fetching repositories in background

QgsPythonRunner::run( QStringLiteral( "import pyplugin_installer" ) );

QgsPythonRunner::run( QStringLiteral( "pyplugin_installer.initPluginInstaller()" ) );

}

// Update recent project list (as possible custom project storages are now registered by plugins)

updateRecentProjectPaths();

mWelcomePage->setRecentProjects( mRecentProjects );

endProfile();

//

mSplash->showMessage( tr( "Restoring window state" ), Qt::AlignHCenter | Qt::AlignBottom );

qApp->processEvents();

restoreWindowState();

endProfile();

// do main window customization - after window state has been restored, before the window is shown

QgsCustomization::instance()->updateMainWindow( mToolbarMenu );

endProfile();

mSplash->showMessage( tr( "Populate saved styles" ), Qt::AlignHCenter | Qt::AlignBottom );

QgsStyle::defaultStyle();

endProfile();

mFullScreenMode = false;

mPrevScreenModeMaximized = false;

show();

qApp->processEvents();

endProfile();

// notify user if authentication system is disabled

( void )QgsAuthGuiUtils::isDisabled( messageBar() );

fileNewBlank(); // prepare empty project, also skips any default templates from loading

updateCrsStatusBar();

endProfile();