Restore NO_GUI compilation

.github/workflows/ci.yml

@@ -150,6 +150,47 @@ jobs:
         working-directory: build
         run: ctest --output-on-failure
 
+  # CI on Linux (Qt6)
+  ci-linux-qt6-nogui:
+    name: "Linux (amd64; qt6; no GUI)"
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.head_commit.message, '[ci skip]') && !contains(github.event.head_commit.message, '[skip ci]') && !contains(github.actor, 'transifex')"
+
+    steps:
+    - name: Install dependencies
+      run: |
+        sudo apt remove php* -y
+        sudo apt update
+        # using force-overwrite due to
+        # https://github.com/actions/virtual-environments/issues/2703
+        #sudo ACCEPT_EULA=Y apt upgrade -o Dpkg::Options::="--force-overwrite" --yes
+        sudo apt install -y qt6-base-private-dev qt6-multimedia-dev qt6-positioning-dev qt6-tools-dev qt6-tools-dev-tools qt6-base-dev-tools qt6-qpa-plugins \
+                            qt6-image-formats-plugins qt6-l10n-tools qt6-webengine-dev qt6-webengine-dev-tools libqt6charts6-dev libqt6charts6 libqt6opengl6-dev \
+                            libqt6positioning6-plugins libqt6serialport6-dev qt6-base-dev libqt6webenginecore6-bin libqt6webengine6-data libexiv2-dev libnlopt-cxx-dev \
+                            zlib1g-dev libgl1-mesa-dev libdrm-dev libglx-dev libxkbcommon-x11-dev libgps-dev libmd4c-dev libmd4c-html0-dev qt6-svg-dev libqt6svgwidgets6 \
+                            libqt6texttospeech6 qt6-speech-dev qt6-speech-speechd-plugin qt6-speech-flite-plugin \
+                            flite speech-dispatcher speech-dispatcher-flite speech-dispatcher-espeak-ng
+
+    - name: Checkout repository
+      uses: actions/checkout@v5
+
+    - name: Configure CMake
+      shell: bash
+      run: |
+        mkdir -p build
+        cd build
+        cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DSTELLARIUM_RELEASE_BUILD=Off -DENABLE_TESTING=On -DSTELLARIUM_GUI_MODE=None "${{ github.workspace }}"
+
+    - name: Compile
+      working-directory: build
+      run: make -j ${{env.parallel_processes}}
+
+    - name: Run unit tests
+      uses: coactions/setup-xvfb@v1
+      with:
+        working-directory: build
+        run: ctest --output-on-failure
+
   # CI on macOS (Qt6)
   ci-macos-silicon-qt6:
     name: "macOS (arm64; qt6)"

BUILDING.md

@@ -804,6 +804,16 @@ the default target - in our case, building Stellarium, its tests, the localizati
 | package        | Create a binary packages for distributions on linux/UNIX
 | installer      | Create a binary packages for distributions on Windows
 
+
+### GUI-less Stellarium 
+
+If you run Stellarium in an environment that should never show a GUI dialog or information text output panel to an auditorium, you can build a version without interface. 
+This is not intended to be controlled directly then, but by means of the RemoteControl Web interface, or just by scripting. 
+Note that even information text output requires the User Interface, but the information about the selected object will be displayed in the web interface.
+To build this lightweight version that also lacks a few GUI-heavy plugins, call any cmake run with the argument `STELLARIUM_GUI_MODE="None"`. 
+
+This is also starting point for experimenting with alternative GUI solutions.
+
 Thanks!
 
 \- *The Stellarium development team*

CMakeLists.txt

@@ -566,7 +566,6 @@ ADD_PLUGIN(EquationOfTime 1)
 ADD_PLUGIN(MeteorShowers 1)
 ADD_PLUGIN(MosaicCamera 1)
 ADD_PLUGIN(NavStars 1)
-ADD_PLUGIN(NebulaTextures 1)
 ADD_PLUGIN(Novae 1)
 ADD_PLUGIN(Observability 1)
 ADD_PLUGIN(Oculars 1)
@@ -583,14 +582,19 @@ ENDIF()
 ADD_PLUGIN(RemoteSync 1)
 ADD_PLUGIN(Satellites 1)
 ADD_PLUGIN(Scenery3d 1)
-ADD_PLUGIN(SkyCultureMaker 1)
-ADD_PLUGIN(SolarSystemEditor 1)
 ADD_PLUGIN(Supernovae 1)
-ADD_PLUGIN(LensDistortionEstimator 1)
 # Candidate to removing as an archaic plugin
 ADD_PLUGIN(TextUserInterface 1)
 ADD_PLUGIN(TelescopeControl 1)
-ADD_PLUGIN(TimeNavigator 1)
+# These plugins are GUI heavy and just make no sense without:
+IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+     ADD_PLUGIN(LensDistortionEstimator 1)
+     ADD_PLUGIN(NebulaTextures 1)
+     ADD_PLUGIN(SkyCultureMaker 1)
+     ADD_PLUGIN(SolarSystemEditor 1)
+     ADD_PLUGIN(TimeNavigator 1)
+ENDIF()
+
 ADD_PLUGIN(Vts 0)
 
 ########## Static plugins need to define includes and libraries

plugins/AngleMeasure/src/AngleMeasure.cpp

@@ -80,7 +80,9 @@ AngleMeasure::AngleMeasure()
 	, flagShowHorizontalStartSkylinked(false)
 	, flagShowHorizontalEndSkylinked(false)
 	, angleHorizontal(0.)
+#ifndef NO_GUI
 	, toolbarButton(Q_NULLPTR)
+	#endif
 {
 	startPoint.set(0.,0.,0.);
 	endPoint.set(0.,0.,0.);
@@ -98,7 +100,9 @@ AngleMeasure::AngleMeasure()
 
 	setObjectName("AngleMeasure");
 
+#ifndef NO_GUI
 	configDialog = new AngleMeasureDialog();
+#endif
 	conf = StelApp::getInstance().getSettings();
 
 	messageTimer = new QTimer(this);
@@ -110,14 +114,20 @@ AngleMeasure::AngleMeasure()
 
 AngleMeasure::~AngleMeasure()
 {
+#ifndef NO_GUI
 	delete configDialog;
+#endif
 }
 
 bool AngleMeasure::configureGui(bool show)
 {
+#ifdef NO_GUI
+	return false;
+#else
 	if (show)
 		configDialog->setVisible(true);
 	return true;
+#endif
 }
 
 //! Determine which "layer" the plugin's drawing will happen on.
@@ -141,13 +151,15 @@ void AngleMeasure::init()
 
 	// Create action for enable/disable & hook up signals	
 	addAction("actionShow_Angle_Measure",        N_("Angle Measure"), N_("Angle measure"),                          "enabled", "Ctrl+A");
+#ifndef NO_GUI
 	addAction("actionShow_Angle_Measure_dialog", N_("Angle Measure"), N_("Angle measure settings"),  configDialog,  "visible" ); // no default hotkey
-
+#endif
 	// Initialize the message strings and make sure they are translated when
 	// the language changes.
 	updateMessageText();
 	connect(&app, SIGNAL(languageChanged()), this, SLOT(updateMessageText()));
 
+#ifndef NO_GUI
 	// Add a toolbar button
 	try
 	{
@@ -168,6 +180,7 @@ void AngleMeasure::init()
 	{
 		qWarning() << "Unable create toolbar button for AngleMeasure plugin: " << e.what();
 	}
+#endif
 }
 
 // handle time updates

plugins/AngleMeasure/src/AngleMeasure.hpp

@@ -205,7 +205,10 @@ private slots:
 	Vec3d perp2EndPointHor;
 	double angleHorizontal;
 
+#ifndef NO_GUI
+	AngleMeasureDialog* configDialog;
 	StelButton* toolbarButton;
+#endif
 
 	void calculateEnds();
 	void calculateEndsOneLine(const Vec3d &start, const Vec3d &end, Vec3d &perp1Start, Vec3d &perp1End, Vec3d &perp2Start, Vec3d &perp2End, double &angleEquatorial);
@@ -219,9 +222,6 @@ private slots:
 	void drawOne(StelCore *core, const StelCore::FrameType frameType, const StelCore::RefractionMode refractionMode, const Vec3f txtColor, const Vec3f lineColor);
 
 	QSettings* conf;
-
-	// GUI
-	AngleMeasureDialog* configDialog;
 };
 
 #include <QObject>

plugins/AngleMeasure/src/CMakeLists.txt

@@ -4,21 +4,29 @@ LINK_DIRECTORIES(${CMAKE_BINARY_DIR}/src)
 SET(AngleMeasure_SRCS
      AngleMeasure.hpp
      AngleMeasure.cpp
+)
+IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+LIST(APPEND AngleMeasure_SRCS
      gui/AngleMeasureDialog.hpp
      gui/AngleMeasureDialog.cpp
 )
 
 SET(AngleMeasure_UIS
      gui/angleMeasureDialog.ui
 )
+ENDIF (STELLARIUM_GUI_MODE STREQUAL "Standard")
 
 ################# compiles resources files ############
 SET(AngleMeasure_RES ../AngleMeasure.qrc)
 IF (${QT_VERSION_MAJOR} EQUAL "5")
-     QT5_WRAP_UI(AngleMeasure_UIS_H ${AngleMeasure_UIS})
+     IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+          QT5_WRAP_UI(AngleMeasure_UIS_H ${AngleMeasure_UIS})
+     ENDIF()
      QT5_ADD_RESOURCES(AngleMeasure_RES_CXX ${AngleMeasure_RES})
 ELSE()
-     QT_WRAP_UI(AngleMeasure_UIS_H ${AngleMeasure_UIS})
+     IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+          QT_WRAP_UI(AngleMeasure_UIS_H ${AngleMeasure_UIS})
+     ENDIF()
      QT_ADD_RESOURCES(AngleMeasure_RES_CXX ${AngleMeasure_RES})
 ENDIF()
 

plugins/ArchaeoLines/src/ArchaeoLines.cpp

@@ -95,7 +95,9 @@ ArchaeoLines::ArchaeoLines()
 	, flagShowCustomDeclination1(false)
 	, flagShowCustomDeclination2(false)
 	, lastJDE(0.0)
+	#ifndef NO_GUI
 	, toolbarButton(Q_NULLPTR)
+	#endif
 {
 	setObjectName("ArchaeoLines");
 	core=StelApp::getInstance().getCore();
@@ -140,7 +142,9 @@ ArchaeoLines::ArchaeoLines()
 	customDeclination1Line = new ArchaeoLine(ArchaeoLine::CustomDeclination1, 0.0);
 	customDeclination2Line = new ArchaeoLine(ArchaeoLine::CustomDeclination2, 0.0);
 
+#ifndef NO_GUI
 	configDialog = new ArchaeoLinesDialog();
+#endif
 	conf = StelApp::getInstance().getSettings();
 
 	connect(core, SIGNAL(locationChanged(StelLocation)), this, SLOT(updateObserverLocation(StelLocation)));
@@ -180,14 +184,20 @@ ArchaeoLines::~ArchaeoLines()
 	delete customDeclination1Line; customDeclination1Line=Q_NULLPTR;
 	delete customDeclination2Line; customDeclination2Line=Q_NULLPTR;
 
+#ifndef NO_GUI
 	delete configDialog; configDialog=Q_NULLPTR;
+#endif
 }
 
 bool ArchaeoLines::configureGui(bool show)
 {
+#ifdef NO_GUI
+	return false;
+#else
 	if (show)
 		configDialog->setVisible(true);
 	return true;
+#endif
 }
 
 //! Determine which "layer" the plugin's drawing will happen on.
@@ -269,8 +279,8 @@ void ArchaeoLines::init()
 	// Create action for enable/disable & hook up signals
 	QString section=N_("ArchaeoLines");
 	addAction("actionShow_ArchaeoLines",         section, N_("ArchaeoLines"), "enabled", "Ctrl+U");
+#ifndef NO_GUI
 	addAction("actionShow_ArchaeoLines_dialog",  section, N_("Show settings dialog"),  configDialog,  "visible",           "Ctrl+Shift+U");
-
 	// Add a toolbar button
 	StelApp& app=StelApp::getInstance();
 	try
@@ -292,6 +302,7 @@ void ArchaeoLines::init()
 	{
 		qWarning() << "Unable to create toolbar button for ArchaeoLines plugin: " << e.what();
 	}
+#endif
 	addAction("actionAL_showEquinoxLine",          section, N_("Show Line for Equinox"),            "flagShowEquinox"         ); // No Shortcuts configured.
 	addAction("actionAL_showSolsticeLines",        section, N_("Show Line for Solstices"),          "flagShowSolstices"       ); // No Shortcuts configured.
 	addAction("actionAL_showCrossquarterLines",    section, N_("Show Line for Crossquarter"),       "flagShowCrossquarters"   ); // No Shortcuts configured.

plugins/ArchaeoLines/src/ArchaeoLines.hpp

@@ -568,15 +568,15 @@ private slots:
 	ArchaeoLine * customAltitude2Line;
 	ArchaeoLine * customDeclination1Line;
 	ArchaeoLine * customDeclination2Line;
-
-	StelButton* toolbarButton;
 
 	QSettings* conf;
-
-	// GUI
-	ArchaeoLinesDialog* configDialog;
 	StelCore* core; // used quite often, better keep a reference...
 	StelObjectMgr* objMgr;
+
+#ifndef NO_GUI
+	ArchaeoLinesDialog* configDialog;
+	StelButton* toolbarButton;
+#endif
 };
 
 

plugins/ArchaeoLines/src/CMakeLists.txt

@@ -4,6 +4,9 @@ LINK_DIRECTORIES(${CMAKE_BINARY_DIR}/src)
 SET(ArchaeoLines_SRCS
      ArchaeoLines.hpp
      ArchaeoLines.cpp
+)
+IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+LIST(APPEND ArchaeoLines_SRCS
      gui/ArchaeoLinesDialog.hpp
      gui/ArchaeoLinesDialog.cpp
      gui/ArchaeoLinesDialogLocations.hpp
@@ -14,14 +17,19 @@ SET(ArchaeoLines_UIS
      gui/archaeoLinesDialog.ui
      gui/archaeoLinesDialogLocations.ui
 )
+ENDIF (STELLARIUM_GUI_MODE STREQUAL "Standard")
 
 ################# compiles resources files ############
 SET(ArchaeoLines_RES ../ArchaeoLines.qrc)
 IF (${QT_VERSION_MAJOR} EQUAL "5")
-     QT5_WRAP_UI(ArchaeoLines_UIS_H ${ArchaeoLines_UIS})
+     IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+          QT5_WRAP_UI(ArchaeoLines_UIS_H ${ArchaeoLines_UIS})
+     ENDIF()
      QT5_ADD_RESOURCES(ArchaeoLines_RES_CXX ${ArchaeoLines_RES})
 ELSE()
-     QT_WRAP_UI(ArchaeoLines_UIS_H ${ArchaeoLines_UIS})
+     IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+           QT_WRAP_UI(ArchaeoLines_UIS_H ${ArchaeoLines_UIS})
+     ENDIF()
      QT_ADD_RESOURCES(ArchaeoLines_RES_CXX ${ArchaeoLines_RES})
 ENDIF()
 

plugins/CMakeLists.txt

@@ -2,6 +2,10 @@ IF(WIN32 AND NOT MSVC)
      STRING(APPEND CMAKE_EXE_LINKER_FLAGS " -Wl,--enable-runtime-pseudo-reloc")
 ENDIF()
 
+IF (STELLARIUM_GUI_MODE STREQUAL "None")
+     ADD_DEFINITIONS(-DNO_GUI)
+ENDIF()
+
 ADD_DEFINITIONS(-DQT_PLUGIN)
 ADD_DEFINITIONS(-DQT_DLL)
 ADD_DEFINITIONS(-D_REENTRANT)

plugins/Calendars/src/CMakeLists.txt

@@ -5,10 +5,6 @@ LINK_DIRECTORIES(${CMAKE_BINARY_DIR}/src)
 SET(Calendars_SRCS
     Calendars.hpp
     Calendars.cpp
-    gui/CalendarsDialog.hpp
-    gui/CalendarsDialog.cpp
-    gui/CalendarsInfoPanel.hpp
-    gui/CalendarsInfoPanel.cpp
     Calendar.hpp
     Calendar.cpp
     EgyptianCalendar.hpp
@@ -85,19 +81,31 @@ SET(Calendars_SRCS
     KoreanCalendar.cpp
     VietnameseCalendar.hpp
     VietnameseCalendar.cpp
+    gui/CalendarsInfoPanel.hpp
+    gui/CalendarsInfoPanel.cpp
+)
+IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+LIST(APPEND Calendars_SRCS
+    gui/CalendarsDialog.hpp
+    gui/CalendarsDialog.cpp
 )
 
 SET(Calendars_UIS
      gui/calendarsDialog.ui
 )
+ENDIF (STELLARIUM_GUI_MODE STREQUAL "Standard")
 
 ################# compiles resources files ############
 SET(Calendars_RES ../resources/Calendars.qrc)
 IF (${QT_VERSION_MAJOR} EQUAL "5")
-     QT5_WRAP_UI(Calendars_UIS_H ${Calendars_UIS})
+     IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+          QT5_WRAP_UI(Calendars_UIS_H ${Calendars_UIS})
+     ENDIF()
      QT5_ADD_RESOURCES(Calendars_RES_CXX ${Calendars_RES})
 ELSE()
-     QT_WRAP_UI(Calendars_UIS_H ${Calendars_UIS})
+     IF (STELLARIUM_GUI_MODE STREQUAL "Standard")
+          QT_WRAP_UI(Calendars_UIS_H ${Calendars_UIS})
+     ENDIF()
      QT_ADD_RESOURCES(Calendars_RES_CXX ${Calendars_RES})
 ENDIF()