Switch skycultures to the new format

CMakeLists.txt

@@ -851,6 +851,12 @@ IF(ENABLE_XLSX)
      ENDIF()
 ENDIF()
 
+CPMAddPackage(NAME md4c
+              URL https://github.com/mity/md4c/archive/refs/tags/release-0.4.8.tar.gz
+              URL_HASH SHA256=4a457df853425b6bb6e3457aa1d1a13bccec587a04c38c622b1013a0da41439f
+              EXCLUDE_FROM_ALL yes
+              OPTIONS "BUILD_MD2HTML_EXECUTABLE OFF")
+
 ########### Set some global variables ###########
 IF(UNIX AND NOT WIN32)
      IF(APPLE)

data/gui/normalHtml.css

@@ -20,3 +20,9 @@ table.layout, table.layout tr td, table.layout tr th {
         padding: 0;
         border-style: none;
 }
+
+.img_and_caption {
+	font-style: italic;
+	margin-right: 3%;
+	margin-left: 3%;
+}

po/CMakeLists.txt

@@ -135,7 +135,9 @@ ENDMACRO(GETTEXT_CREATE_TRANSLATIONS )
 
 
 ADD_SUBDIRECTORY(stellarium) 
+ADD_SUBDIRECTORY(stellarium-sky)
 ADD_SUBDIRECTORY(stellarium-skycultures) 
+ADD_SUBDIRECTORY(stellarium-skycultures-descriptions)
 ADD_SUBDIRECTORY(stellarium-planetary-features) 
 IF(ENABLE_SCRIPTING)
     ADD_SUBDIRECTORY(stellarium-scripts) 

po/stellarium-sky/CMakeLists.txt

@@ -0,0 +1,28 @@
+FILE(GLOB poscfiles RELATIVE "${CMAKE_SOURCE_DIR}/po/stellarium-sky/" "*.po")
+LIST(SORT poscfiles)
+STRING(REGEX REPLACE ".po" "" outposcfiles "${poscfiles}")
+
+GETTEXT_CREATE_TRANSLATIONS(stellarium-sky DEFAULT_TARGET ${outposcfiles})
+
+# Discard this target if xgettext is not installed
+IF(${XGETTEXT_FOUND})
+     ADD_CUSTOM_TARGET(
+          generate-pot-stellarium-sky
+          ${GETTEXT_XGETTEXT_EXECUTABLE}
+               -o stellarium-sky.pot
+               --keyword=_:1,2c
+               --language=Python
+               --add-comments=TRANSLATORS:
+               --directory=${PROJECT_SOURCE_DIR}
+               --files-from=POTFILES.in
+               --copyright-holder=Stellarium's\ team
+               [email protected]
+               --from-code=utf-8
+          WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+          COMMENT "Generating stellarium-sky.pot"
+          VERBATIM
+     )
+
+     # Generate this POT file when building the "generate-pot" target.
+     ADD_DEPENDENCIES(generate-pot generate-pot-stellarium-sky)
+ENDIF()

po/stellarium-sky/POTFILES.in

@@ -0,0 +1,7 @@
+# Proper names of celestial bodies
+skycultures/translations.fab
+# Proper names of deep-sky objects
+nebulae/default/names.dat
+# International names of sky objects
+skycultures/common_dso_names.fab
+skycultures/common_star_names.fab