Convert features.splashscreen to QT_REQUIRE_CONFIG

Change-Id: Ie46b7c6fb52773dea25c552a77c96d800f471738
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

src/widgets/widgets/qsplashscreen.cpp

@@ -39,8 +39,6 @@
 
 #include "qsplashscreen.h"
 
-#ifndef QT_NO_SPLASHSCREEN
-
 #include "qapplication.h"
 #include "qdesktopwidget.h"
 #include "qpainter.h"
@@ -354,5 +352,3 @@ bool QSplashScreen::event(QEvent *e)
 QT_END_NAMESPACE
 
 #include "moc_qsplashscreen.cpp"
-
-#endif //QT_NO_SPLASHSCREEN

src/widgets/widgets/qsplashscreen.h

@@ -44,10 +44,10 @@
 #include <QtGui/qpixmap.h>
 #include <QtWidgets/qwidget.h>
 
+QT_REQUIRE_CONFIG(splashscreen);
+
 QT_BEGIN_NAMESPACE
 
-
-#ifndef QT_NO_SPLASHSCREEN
 class QSplashScreenPrivate;
 
 class Q_WIDGETS_EXPORT QSplashScreen : public QWidget
@@ -82,8 +82,6 @@ private:
     Q_DECLARE_PRIVATE(QSplashScreen)
 };
 
-#endif // QT_NO_SPLASHSCREEN
-
 QT_END_NAMESPACE
 
 #endif // QSPLASHSCREEN_H

src/widgets/widgets/widgets.pri

@@ -40,7 +40,6 @@ HEADERS += \
         widgets/qsizegrip.h \
         widgets/qslider.h \
         widgets/qspinbox.h \
-        widgets/qsplashscreen.h \
         widgets/qsplitter.h \
         widgets/qsplitter_p.h \
         widgets/qstackedwidget.h \
@@ -97,7 +96,6 @@ SOURCES += \
         widgets/qsizegrip.cpp \
         widgets/qslider.cpp \
         widgets/qspinbox.cpp \
-        widgets/qsplashscreen.cpp \
         widgets/qsplitter.cpp \
         widgets/qstackedwidget.cpp \
         widgets/qstatusbar.cpp \
@@ -196,6 +194,14 @@ qtConfig(dialogbuttonbox) {
         widgets/qdialogbuttonbox.cpp
 }
 
+qtConfig(splashscreen) {
+    HEADERS += \
+        widgets/qsplashscreen.h
+
+    SOURCES += \
+        widgets/qsplashscreen.cpp
+}
+
 qtConfig(widgettextcontrol) {
     HEADERS += \
         widgets/qwidgettextcontrol_p.h \