From 5dd8e9cdd4d6b9c8c936630ab49da5bcec4728a1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 20 Jan 2014 09:46:15 +0100
Subject: [PATCH] examples: Port Qt examples to Qt5

---
 configure.ac                               | 41 +++++++++++++++++-----
 tests/examples/overlay/Makefile.am         |  9 +++--
 tests/examples/overlay/qt-videooverlay.cpp |  2 +-
 3 files changed, 37 insertions(+), 15 deletions(-)

diff --git a/configure.ac b/configure.ac
index 04953715e8..b986881f8e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -275,21 +275,44 @@ AM_CONDITIONAL(HAVE_GTK_X11, test "x$HAVE_GTK_X11" = "xyes")
 AM_CONDITIONAL(HAVE_GTK_QUARTZ, test "x$HAVE_GTK_QUARTZ" = "xyes")
 
 dnl QT is optional and only used in examples
-PKG_CHECK_MODULES(QT, QtGui >= 4.6, [
-  HAVE_QT_GV=yes
+PKG_CHECK_MODULES(QT, Qt5Gui Qt5Widgets, [
   HAVE_QT=yes
 ], [
-  HAVE_QT_GV=no
-  PKG_CHECK_MODULES(QT, QtGui >= 4.0, HAVE_QT=yes, HAVE_QT=no)
+  HAVE_QT=no
 ])
 if test "x$HAVE_QT" = "xyes"; then
-  AC_MSG_CHECKING([Qt moc])
-  QT4_MOC=`$PKG_CONFIG --variable=moc_location QtGui`
-  AC_MSG_RESULT($QT4_MOC)
-  AC_SUBST(QT4_MOC)
+  AC_CHECK_TOOL(QT_MOC, moc)
+  AC_MSG_CHECKING([for Qt5 moc])
+  mocversion=`$QT_MOC -v 2>&1`
+  mocversiongrep=`echo $mocversion | grep "Qt 5\|moc 5"`
+  if test x"$mocversiongrep" != x"$mocversion"; then
+    AC_MSG_RESULT([no])
+    # moc was not the qt5 one, try with moc-qt5
+    AC_CHECK_TOOL(QT_MOC, moc-qt5)
+    AC_MSG_CHECKING([for Qt5 moc-qt5])
+    mocversion=`$QT_MOC -v 2>&1`
+    mocversiongrep=`echo $mocversion | grep "Qt 5\|moc 5"`
+    if test x"$mocversiongrep" != x"$mocversion"; then
+      AC_CHECK_TOOL(QTCHOOSER, qtchooser)
+      AC_MSG_CHECKING([for qtchooser])
+      qt5tooldir=`QT_SELECT=qt5 qtchooser -print-env | grep QTTOOLDIR | cut -d '=' -f 2 | cut -d \" -f 2`
+      mocversion=`$qt5tooldir/moc -v 2>&1`
+      mocversiongrep=`echo $mocversion | grep "Qt 5\|moc 5"`
+      if test x"$mocversiongrep" != x"$mocversion"; then
+        # no valid moc found
+        QT_MOC="no"
+      else
+        QT_MOC=$qt5tooldir/moc
+      fi
+    else
+      QT_MOC=$QT_MOC
+    fi
+  fi
+  AC_SUBST(QT_MOC)
+  AC_MSG_RESULT([$QT_MOC])
 fi
 AM_CONDITIONAL(HAVE_QT, test "x$HAVE_QT" = "xyes")
-AM_CONDITIONAL(HAVE_QT_GV, test "x$HAVE_QT_GV" = "xyes")
+AM_CONDITIONAL(HAVE_QT_MOC, test "x$HAVE_QT_MOC" != "xno")
 
 dnl chck for linux headers needed by the joystick seek example
 AC_COMPILE_IFELSE(
diff --git a/tests/examples/overlay/Makefile.am b/tests/examples/overlay/Makefile.am
index f56935ba5a..6bcdb8ffc2 100644
--- a/tests/examples/overlay/Makefile.am
+++ b/tests/examples/overlay/Makefile.am
@@ -16,17 +16,17 @@ if HAVE_QT
 EXAMPLES += qt-videooverlay
 
 qt_videooverlay_SOURCES = qt-videooverlay.cpp
-qt_videooverlay_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CXXFLAGS) $(X_CFLAGS) $(QT_CFLAGS)
+qt_videooverlay_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CXXFLAGS) $(X_CFLAGS) $(QT_CFLAGS) -fPIC
 qt_videooverlay_LDADD = \
 	$(top_builddir)/gst-libs/gst/video/libgstvideo-$(GST_API_VERSION).la \
 	$(GST_LIBS) $(X_LIBS) $(LIBM) $(QT_LIBS)
 endif
 
-if HAVE_QT_GV
+if HAVE_QT_MOC
 EXAMPLES += qtgv-videooverlay
 
 qtgv_videooverlay_SOURCES = qtgv-videooverlay.cpp qtgv-videooverlay.h
-qtgv_videooverlay_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CXXFLAGS) $(X_CFLAGS) $(QT_CFLAGS)
+qtgv_videooverlay_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CXXFLAGS) $(X_CFLAGS) $(QT_CFLAGS) -fPIC
 qtgv_videooverlay_LDADD = \
 	$(top_builddir)/gst-libs/gst/video/libgstvideo-$(GST_API_VERSION).la \
 	$(GST_LIBS) $(X_LIBS) $(LIBM) $(QT_LIBS)
@@ -36,11 +36,10 @@ qtgv_videooverlay_LDADD = \
 nodist_qtgv_videooverlay_SOURCES = moc_qtgv-videooverlay.cpp
 
 moc_%.cpp:%.h
-	$(AM_V_GEN)$(QT4_MOC) $< -o $@
+	$(AM_V_GEN)$(QT_MOC) $< -o $@
 
 EXTRA_DIST = $(nodist_qtgv_videooverlay_SOURCES:moc_%.cpp=%.h)
 CLEANFILES = $(nodist_qtgv_videooverlay_SOURCES)
-
 endif
 
 endif
diff --git a/tests/examples/overlay/qt-videooverlay.cpp b/tests/examples/overlay/qt-videooverlay.cpp
index 01449fcc9a..b96466bc7c 100644
--- a/tests/examples/overlay/qt-videooverlay.cpp
+++ b/tests/examples/overlay/qt-videooverlay.cpp
@@ -83,7 +83,7 @@ int main(int argc, char *argv[])
 {
   gst_init (&argc, &argv);
   QApplication app(argc, argv);
-  app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit ()));
+  app.setQuitOnLastWindowClosed(true);
 
   /* prepare the pipeline */