Add cmake/modules files

Installation/cmake/modules/CGAL_Qt6_moc_and_resource_files.cmake

@@ -0,0 +1,25 @@
+if(CGAL_Qt6_moc_and_resource_files_included)
+  return()
+endif()
+set(CGAL_Qt6_moc_and_resource_files_included TRUE)
+# qrc files (resources files, that contain icons, at least)
+if(EXISTS ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/demo/resources/CGAL.qrc)
+  qt5_add_resources (_CGAL_Qt6_RESOURCE_FILES_private
+    ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/demo/resources/CGAL.qrc
+    ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/demo/icons/Input.qrc
+    ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/demo/icons/File.qrc
+    ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/demo/icons/Triangulation_2.qrc)
+else()
+  # Installed version, in CMake resources
+  file ( COPY
+    ${CGAL_MODULES_DIR}/demo/resources
+    ${CGAL_MODULES_DIR}/demo/icons
+    DESTINATION ${CMAKE_BINARY_DIR})
+  qt5_add_resources (_CGAL_Qt6_RESOURCE_FILES_private
+    ${CMAKE_BINARY_DIR}/resources/CGAL.qrc
+    ${CMAKE_BINARY_DIR}/icons/Input.qrc
+    ${CMAKE_BINARY_DIR}/icons/File.qrc
+    ${CMAKE_BINARY_DIR}/icons/Triangulation_2.qrc)
+endif()
+
+qt5_wrap_ui(_CGAL_Qt6_UI_FILES ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/ImageInterface.ui)

Installation/cmake/modules/CGAL_SetupCGAL_Qt6Dependencies.cmake

@@ -0,0 +1,124 @@
+#.rst:
+# CGAL_SetupCGAL_Qt6Dependencies
+# ------------------------------
+#
+# The module searches for the dependencies of the `CGAL_Qt6` library:
+#   - the `Qt6` libraries
+#
+# by calling
+#
+# .. code-block:: cmake
+#
+#    find_package(Qt6 QUIET COMPONENTS OpenGL Svg)
+#
+# and defines the variable :variable:`CGAL_Qt6_FOUND` and the function
+# :command:`CGAL_setup_CGAL_Qt6_dependencies`.
+#
+
+if(CGAL_SetupCGAL_Qt6Dependencies_included)
+  return()
+endif()
+set(CGAL_SetupCGAL_Qt6Dependencies_included TRUE)
+
+#.rst:
+# Used Modules
+# ^^^^^^^^^^^^
+#   - :module:`Qt6Config`
+find_package(Qt6 QUIET COMPONENTS OpenGL Svg)
+
+set(CGAL_Qt6_MISSING_DEPS "")
+if(NOT Qt6OpenGL_FOUND)
+  set(CGAL_Qt6_MISSING_DEPS "Qt6OpenGL")
+endif()
+if(NOT Qt6Svg_FOUND)
+  set(CGAL_Qt6_MISSING_DEPS "${CGAL_Qt6_MISSING_DEPS} Qt6Svg")
+endif()
+if(NOT Qt6_FOUND)
+  set(CGAL_Qt6_MISSING_DEPS "${CGAL_Qt6_MISSING_DEPS} Qt6")
+endif()
+if(NOT EXISTS ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/GraphicsItem.h)
+  set(CGAL_Qt6_MISSING_DEPS "${CGAL_Qt6_MISSING_DEPS} <CGAL/Qt/*.h> headers")
+endif()
+
+#.rst:
+# Result Variables
+# ^^^^^^^^^^^^^^^^
+#
+# .. variable:: CGAL_Qt6_FOUND
+#
+#    Set to `TRUE` if the dependencies of `CGAL_Qt6` were found.
+#
+if(NOT CGAL_Qt6_MISSING_DEPS)
+  set(CGAL_Qt6_FOUND TRUE)
+  set_property(GLOBAL PROPERTY CGAL_Qt6_FOUND TRUE)
+
+  include(${CMAKE_CURRENT_LIST_DIR}/CGAL_Qt6_moc_and_resource_files.cmake)
+
+  if(NOT TARGET CGAL_Qt6_moc_and_resources)
+    add_library(CGAL_Qt6_moc_and_resources STATIC
+      ${_CGAL_Qt6_MOC_FILES_private}
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/GraphicsViewNavigation.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/DemosMainWindow.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/GraphicsItem.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/GraphicsViewInput.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/camera.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/frame.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/keyFrameInterpolator.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/manipulatedCameraFrame.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/manipulatedFrame.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/qglviewer.h
+        ${CGAL_GRAPHICSVIEW_PACKAGE_DIR}/include/CGAL/Qt/image_interface.h
+        ${_CGAL_Qt6_UI_FILES}
+      ${_CGAL_Qt6_RESOURCE_FILES_private})
+    target_include_directories( CGAL_Qt6_moc_and_resources PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
+    set_target_properties(CGAL_Qt6_moc_and_resources PROPERTIES
+      POSITION_INDEPENDENT_CODE TRUE
+      EXCLUDE_FROM_ALL TRUE
+      AUTOMOC TRUE)
+    target_link_libraries(CGAL_Qt6_moc_and_resources CGAL::CGAL Qt6::Widgets Qt6::OpenGL Qt6::Svg )
+
+    add_library(CGAL::CGAL_Qt6_moc_and_resources ALIAS CGAL_Qt6_moc_and_resources)
+    add_library(CGAL::Qt6_moc_and_resources ALIAS CGAL_Qt6_moc_and_resources)
+  endif()
+
+endif()
+
+#get_property(QT_UIC_EXECUTABLE TARGET Qt6::uic PROPERTY LOCATION)
+#message( STATUS "Qt6Core include:     ${Qt6Core_INCLUDE_DIRS}" )
+#message( STATUS "Qt6 libraries:       ${Qt6Core_LIBRARIES} ${Qt6Gui_LIBRARIES} ${Qt6Svg_LIBRARIES} ${Qt6OpenGL_LIBRARIES}" )
+#message( STATUS "Qt6Core definitions: ${Qt6Core_DEFINITIONS}" )
+#message( STATUS "moc executable:      ${QT_MOC_EXECUTABLE}" )
+#message( STATUS "uic executable:      ${QT_UIC_EXECUTABLE}" )
+
+#.rst:
+#
+# Provided Functions
+# ^^^^^^^^^^^^^^^^^^
+#
+# .. command:: CGAL_setup_CGAL_Qt6_dependencies
+#
+#   Link the target with the dependencies of `CGAL_Qt6`::
+#
+#     CGAL_setup_CGAL_Qt6_dependencies( target )
+#
+#   The dependencies are
+#   added using :command:`target_link_libraries` with the ``INTERFACE``
+#   keyword.
+#
+function(CGAL_setup_CGAL_Qt6_dependencies target)
+
+  if($ENV{CGAL_FAKE_PUBLIC_RELEASE})
+    target_compile_definitions( ${target} INTERFACE CGAL_FAKE_PUBLIC_RELEASE=1 )
+  endif()
+  target_link_libraries( ${target} INTERFACE CGAL::CGAL)
+  target_link_libraries( ${target} INTERFACE CGAL::Qt6_moc_and_resources)
+  target_link_libraries( ${target} INTERFACE Qt6::OpenGL Qt6::Svg )
+
+  # Remove -Wdeprecated-copy, for g++ >= 9.0, because Qt6, as of
+  # version 5.12, has a lot of [-Wdeprecated-copy] warnings.
+  if( CMAKE_CXX_COMPILER_ID STREQUAL "GNU"
+      AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "9" )
+    target_compile_options( ${target} INTERFACE "-Wno-deprecated-copy" "-Wno-cast-function-type" )
+  endif()
+
+endfunction()