Update CMake scripts to recognize Qt 5.0

CMakeLists.txt

@@ -594,12 +594,15 @@ endif()
 status("")
 status("  GUI: ")
 
-if(HAVE_QT)
+if(HAVE_QT5)
+  status("    QT 5.x:"            HAVE_QT        THEN "YES (ver ${Qt5Core_VERSION_STRING})" ELSE NO)
+  status("    QT OpenGL support:" HAVE_QT_OPENGL THEN "YES (${Qt5OpenGL_LIBRARIES} ${Qt5OpenGL_VERSION_STRING})" ELSE NO)
+elseif(HAVE_QT)
   status("    QT 4.x:"            HAVE_QT        THEN "YES (ver ${QT_VERSION_MAJOR}.${QT_VERSION_MINOR}.${QT_VERSION_PATCH} ${QT_EDITION})" ELSE NO)
   status("    QT OpenGL support:" HAVE_QT_OPENGL THEN "YES (${QT_QTOPENGL_LIBRARY})" ELSE NO)
 else()
   if(DEFINED WITH_QT)
-    status("    QT 4.x:" NO)
+    status("    QT:" NO)
   endif()
   if(DEFINED WITH_WIN32UI)
     status("    Win32 UI:" HAVE_WIN32UI THEN YES ELSE NO)

cmake/OpenCVFindLibsGUI.cmake

@@ -13,12 +13,31 @@ if(WITH_WIN32UI)
 endif(WITH_WIN32UI)
 
 # --- QT4 ---
-ocv_clear_vars(HAVE_QT)
+ocv_clear_vars(HAVE_QT HAVE_QT5)
 if(WITH_QT)
-  find_package(Qt4)
-  if(QT4_FOUND)
-    set(HAVE_QT TRUE)
-    add_definitions(-DHAVE_QT) # We need to define the macro this way, using cvconfig.h does not work
+  if(NOT CMAKE_VERSION VERSION_LESS 2.8.3 AND NOT WITH_QT EQUAL 4)
+    find_package(Qt5Core)
+    find_package(Qt5Gui)
+    find_package(Qt5Widgets)
+    find_package(Qt5Test)
+    find_package(Qt5Concurrent)
+    if(Qt5Core_FOUND AND Qt5Gui_FOUND AND Qt5Widgets_FOUND AND Qt5Test_FOUND AND Qt5Concurrent_FOUND)
+      set(HAVE_QT5 ON)
+      set(HAVE_QT  ON)
+      add_definitions(-DHAVE_QT)
+      find_package(Qt5OpenGL)
+      if(Qt5OpenGL_FOUND)
+        set(QT_QTOPENGL_FOUND ON)
+      endif()
+    endif()
+  endif()
+
+  if(NOT HAVE_QT)
+    find_package(Qt4)
+    if(QT4_FOUND)
+      set(HAVE_QT TRUE)
+      add_definitions(-DHAVE_QT) # We need to define the macro this way, using cvconfig.h does not work
+    endif()
   endif()
 endif()
 

modules/highgui/CMakeLists.txt

@@ -70,7 +70,26 @@ set(highgui_srcs
 
 file(GLOB highgui_ext_hdrs "include/opencv2/${name}/*.hpp" "include/opencv2/${name}/*.h")
 
-if(HAVE_QT)
+if(HAVE_QT5)
+  set(CMAKE_AUTOMOC ON)
+  set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+  QT5_ADD_RESOURCES(_RCC_OUTFILES src/window_QT.qrc)
+  list(APPEND highgui_srcs src/window_QT.cpp src/window_QT.h ${_RCC_OUTFILES})
+
+  foreach(dt5_dep Core Gui Widgets Test Concurrent)
+    add_definitions(${Qt5${dt5_dep}_DEFINITIONS})
+    include_directories(${Qt5${dt5_dep}_INCLUDE_DIRS})
+    list(APPEND HIGHGUI_LIBRARIES ${Qt5${dt5_dep}_LIBRARIES})
+  endforeach()
+
+  if(HAVE_QT_OPENGL)
+    add_definitions(${Qt5OpenGL_DEFINITIONS})
+    include_directories(${Qt5OpenGL_INCLUDE_DIRS})
+    list(APPEND HIGHGUI_LIBRARIES ${Qt5OpenGL_LIBRARIES})
+  endif()
+
+elseif(HAVE_QT)
   if (HAVE_QT_OPENGL)
     set(QT_USE_QTOPENGL TRUE)
   endif()

modules/highgui/src/window_QT.h

@@ -48,13 +48,13 @@
 #endif
 
 #include <QAbstractEventDispatcher>
-#include <QtGui/QApplication>
+#include <QApplication>
 #include <QFile>
 #include <QPushButton>
-#include <QtGui/QGraphicsView>
+#include <QGraphicsView>
 #include <QSizePolicy>
 #include <QInputDialog>
-#include <QtGui/QBoxLayout>
+#include <QBoxLayout>
 #include <QSettings>
 #include <qtimer.h>
 #include <QtConcurrentRun>
@@ -78,7 +78,7 @@
 #include <QRadioButton>
 #include <QButtonGroup>
 #include <QMenu>
-#include <QtTest/QTest>
+#include <QTest>
 
 //start private enum
 enum { CV_MODE_NORMAL = 0, CV_MODE_OPENGL = 1 };