CMake: Use Qt5::DesignerComponents

QTBUG-75867 about missing Qt5::DesignerComponents support has been
fixed, so use that over our own hand-rolled version.

Change-Id: I6d8bb7f7d5359050f20a095adb4a074f143e8d49
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

CMakeLists.txt

@@ -48,7 +48,8 @@ find_package(Qt5 COMPONENTS LinguistTools)
 
 find_package(Threads)
 
-find_package(Qt5 COMPONENTS Designer Help Script SerialPort Svg QUIET)
+find_package(Qt5 COMPONENTS Designer DesignerComponents Help Script SerialPort Svg QUIET)
+
 function (set_if_target var target)
    if (TARGET "${target}")
      set(_result ON)

cmake/FindDesignerComponents.cmake

@@ -1,69 +0,0 @@
-#.rst:
-# FindDesignerComponents
-# ---------
-#
-# Try to locate the DesignerComponents library.
-# If found, this will define the following variables:
-#
-# ``DesignerComponents_FOUND``
-#     True if the DesignerComponents library is available
-# ``DesignerComponents_INCLUDE_DIRS``
-#     The DesignerComponents include directories
-# ``DesignerComponents_LIBRARIES``
-#     The DesignerComponentscore library for linking
-# ``DesignerComponents_INSTALL_DIR``
-#     Top level DesignerComponents installation directory
-#
-# If ``DesignerComponents_FOUND`` is TRUE, it will also define the following
-# imported target:
-#
-# ``Qt5::DesignerComponents``
-#     The DesignerComponents library
-
-find_package(Qt5Designer QUIET)
-if (NOT Qt5Designer_FOUND)
-    set(DesignerComponents_FOUND OFF)
-    return()
-endif()
-
-get_target_property(_designer_location Qt5::Designer IMPORTED_LOCATION_DEBUG)
-if (NOT _designer_location)
-  get_target_property(_designer_location Qt5::Designer IMPORTED_LOCATION_RELEASE)
-endif()
-if (NOT _designer_location)
-  get_target_property(_designer_location Qt5::Designer IMPORTED_LOCATION)
-endif()
-get_target_property(_designer_is_framework Qt5::Designer FRAMEWORK)
-find_library(DesignerComponents_LIBRARIES NAMES Qt5DesignerComponents QtDesignerComponents Qt5DesignerComponentsd QtDesignerComponentsd
-  HINTS "${_designer_location}/.." "${_designer_location}/../..")
-
-if (_designer_is_framework)
-  if (DesignerComponents_LIBRARIES)
-    set(DesignerComponents_LIBRARIES "${DesignerComponents_LIBRARIES}/QtDesignerComponents")
-  endif()
-else()
-  find_path(DesignerComponents_INCLUDE_DIRS NAMES qtdesignercomponentsversion.h PATH_SUFFIXES QtDesignerComponents HINTS ${Qt5Designer_INCLUDE_DIRS})
-  set(_required_vars Qt5Designer_INCLUDE_DIRS)
-endif()
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(DesignerComponents DEFAULT_MSG
-  DesignerComponents_LIBRARIES ${_required_vars})
-
-if(DesignerComponents_FOUND AND NOT TARGET DesignerComponents::DesignerComponents)
-  add_library(Qt5::DesignerComponents UNKNOWN IMPORTED)
-  set_target_properties(Qt5::DesignerComponents PROPERTIES
-      IMPORTED_LOCATION "${DesignerComponents_LIBRARIES}")
-  if (NOT _designer_is_framework)
-    set_target_properties(Qt5::DesignerComponents PROPERTIES
-                          INTERFACE_INCLUDE_DIRECTORIES "${DesignerComponents_INCLUDE_DIRS}")
-  endif()
-endif()
-
-mark_as_advanced(DesignerComponents_INCLUDE_DIRS DesignerComponents_LIBRARIES)
-
-include(FeatureSummary)
-set_package_properties(DesignerComponents PROPERTIES
-  URL "https://qt.io/"
-  DESCRIPTION "Qt5 (Widget) DesignerComponents library")
-

src/plugins/designer/CMakeLists.txt

@@ -1,6 +1,3 @@
-# Qt5::DesignerComponents doesn't have a target, so we need to define our own:-/
-find_package(DesignerComponents)
-
 if (WITH_TESTS)
   set(TST_COMPONENT CppEditor)
 endif()