opencv/cmake/OpenCVFindLibsGUI.cmake

# ----------------------------------------------------------------------------
#  Detect 3rd-party GUI libraries
# ----------------------------------------------------------------------------

# --- QT4/5 ---
ocv_clear_vars(HAVE_QT HAVE_QT5)
if(WITH_QT)
  if(NOT WITH_QT EQUAL 4)
    find_package(Qt5 COMPONENTS Core Gui Widgets Test Concurrent REQUIRED NO_MODULE)
    if(Qt5_FOUND)
      set(HAVE_QT5 ON)
      set(HAVE_QT  ON)
      find_package(Qt5 COMPONENTS OpenGL QUIET)
      if(Qt5OpenGL_FOUND)
        set(QT_QTOPENGL_FOUND ON)
      endif()
    endif()
  endif()

  if(NOT HAVE_QT)
    find_package(Qt4 REQUIRED QtCore QtGui QtTest)
    if(QT4_FOUND)
      set(HAVE_QT TRUE)
    endif()
  endif()
endif()

# --- OpenGl ---
ocv_clear_vars(HAVE_OPENGL HAVE_QT_OPENGL)
if(WITH_OPENGL)
  if(WITH_WIN32UI OR (HAVE_QT AND QT_QTOPENGL_FOUND) OR HAVE_GTKGLEXT)
    find_package (OpenGL QUIET)
    if(OPENGL_FOUND)
      set(HAVE_OPENGL TRUE)
      list(APPEND OPENCV_LINKER_LIBS ${OPENGL_LIBRARIES})
      if(QT_QTOPENGL_FOUND)
        set(HAVE_QT_OPENGL TRUE)
      else()
        ocv_include_directories(${OPENGL_INCLUDE_DIR})
      endif()
    endif()
  endif()
endif(WITH_OPENGL)

# --- Cocoa ---
if(APPLE)
  if(NOT IOS AND CV_CLANG)
    set(HAVE_COCOA YES)
  endif()
endif()
Merged the trunk r8459:8466 (inclusive) 2012-05-30 17:00:32 +08:00			`# ----------------------------------------------------------------------------`
			`# Detect 3rd-party GUI libraries`
			`# ----------------------------------------------------------------------------`

highgui: backends and plugins 2021-05-01 21:13:58 +08:00			`# --- QT4/5 ---`
Update CMake scripts to recognize Qt 5.0 2013-04-18 02:02:01 +08:00			`ocv_clear_vars(HAVE_QT HAVE_QT5)`
Merged the trunk r8459:8466 (inclusive) 2012-05-30 17:00:32 +08:00			`if(WITH_QT)`
Removed CMake version checks that we don't need anymore. 2013-07-22 17:55:49 +08:00			`if(NOT WITH_QT EQUAL 4)`
BUG: Qt5 components not correctly detected if only Qt5_DIR is provided, when this is supported by Qt CMake system. Fixed by updating Qt5 find_package call to use modern CMake syntax 2019-04-25 02:36:29 +08:00			`find_package(Qt5 COMPONENTS Core Gui Widgets Test Concurrent REQUIRED NO_MODULE)`
			`if(Qt5_FOUND)`
Update CMake scripts to recognize Qt 5.0 2013-04-18 02:02:01 +08:00			`set(HAVE_QT5 ON)`
			`set(HAVE_QT ON)`
BUG: Qt5 components not correctly detected if only Qt5_DIR is provided, when this is supported by Qt CMake system. Fixed by updating Qt5 find_package call to use modern CMake syntax 2019-04-25 02:36:29 +08:00			`find_package(Qt5 COMPONENTS OpenGL QUIET)`
Update CMake scripts to recognize Qt 5.0 2013-04-18 02:02:01 +08:00			`if(Qt5OpenGL_FOUND)`
			`set(QT_QTOPENGL_FOUND ON)`
			`endif()`
			`endif()`
			`endif()`

			`if(NOT HAVE_QT)`
Fix a missing header path when building with Qt 4. Also, removing explicit include path configuration, since QT_USE_FILE takes care of that. 2013-06-06 18:09:33 +08:00			`find_package(Qt4 REQUIRED QtCore QtGui QtTest)`
Update CMake scripts to recognize Qt 5.0 2013-04-18 02:02:01 +08:00			`if(QT4_FOUND)`
			`set(HAVE_QT TRUE)`
			`endif()`
Merged the trunk r8459:8466 (inclusive) 2012-05-30 17:00:32 +08:00			`endif()`
			`endif()`

			`# --- OpenGl ---`
			`ocv_clear_vars(HAVE_OPENGL HAVE_QT_OPENGL)`
			`if(WITH_OPENGL)`
Improve CMake checks for the OpenGL availability Issue #2868 2013-04-04 15:57:00 +08:00			`if(WITH_WIN32UI OR (HAVE_QT AND QT_QTOPENGL_FOUND) OR HAVE_GTKGLEXT)`
Merged the trunk r8459:8466 (inclusive) 2012-05-30 17:00:32 +08:00			`find_package (OpenGL QUIET)`
			`if(OPENGL_FOUND)`
			`set(HAVE_OPENGL TRUE)`
			`list(APPEND OPENCV_LINKER_LIBS ${OPENGL_LIBRARIES})`
			`if(QT_QTOPENGL_FOUND)`
			`set(HAVE_QT_OPENGL TRUE)`
			`else()`
			`ocv_include_directories(${OPENGL_INCLUDE_DIR})`
			`endif()`
			`endif()`
			`endif()`
			`endif(WITH_OPENGL)`
Refactored detecting several Apple-related technologies. Now the HAVE_* macros are set using cvconfig.h. Previously most of them already were there, but were always undefined. One, HAVE_COCOA, I had to add. This also makes the CMake code more consistent; now, WITH_* variables are always checked in cmake/, while HAVE_ variables are checked in modules/highgui/CMakeLists.txt. 2013-07-10 22:20:34 +08:00
highgui: drop obsolete Carbon API https://en.wikipedia.org/wiki/Carbon_(API) In 2012, with the release of OS X 10.8 Mountain Lion, most Carbon APIs were considered deprecated. 2018-11-08 00:21:33 +08:00			`# --- Cocoa ---`
Refactored detecting several Apple-related technologies. Now the HAVE_* macros are set using cvconfig.h. Previously most of them already were there, but were always undefined. One, HAVE_COCOA, I had to add. This also makes the CMake code more consistent; now, WITH_* variables are always checked in cmake/, while HAVE_ variables are checked in modules/highgui/CMakeLists.txt. 2013-07-10 22:20:34 +08:00			`if(APPLE)`
highgui: drop obsolete Carbon API https://en.wikipedia.org/wiki/Carbon_(API) In 2012, with the release of OS X 10.8 Mountain Lion, most Carbon APIs were considered deprecated. 2018-11-08 00:21:33 +08:00			`if(NOT IOS AND CV_CLANG)`
Refactored detecting several Apple-related technologies. Now the HAVE_* macros are set using cvconfig.h. Previously most of them already were there, but were always undefined. One, HAVE_COCOA, I had to add. This also makes the CMake code more consistent; now, WITH_* variables are always checked in cmake/, while HAVE_ variables are checked in modules/highgui/CMakeLists.txt. 2013-07-10 22:20:34 +08:00			`set(HAVE_COCOA YES)`
			`endif()`
			`endif()`