Convert features.printpreviewdialog to QT_[REQUIRE_]CONFIG

Change-Id: If38d70b1e098c0cc680b913b2c4087681ad2a41e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

src/printsupport/dialogs/dialogs.pri

@@ -5,8 +5,7 @@ HEADERS += \
         dialogs/qabstractprintdialog_p.h \
         dialogs/qpagesetupdialog_p.h \
         dialogs/qpagesetupdialog.h \
-        dialogs/qprintdialog.h \
-        dialogs/qprintpreviewdialog.h
+        dialogs/qprintdialog.h
 
 osx {
     OBJECTIVE_SOURCES += dialogs/qpagesetupdialog_mac.mm \
@@ -33,8 +32,12 @@ INCLUDEPATH += $$PWD
 
 SOURCES += \
         dialogs/qabstractprintdialog.cpp \
-        dialogs/qpagesetupdialog.cpp \
-        dialogs/qprintpreviewdialog.cpp
+        dialogs/qpagesetupdialog.cpp
+
+qtConfig(printpreviewdialog) {
+    HEADERS += dialogs/qprintpreviewdialog.h
+    SOURCES += dialogs/qprintpreviewdialog.cpp
+}
 
 FORMS += dialogs/qpagesetupwidget.ui
 RESOURCES += dialogs/qprintdialog.qrc

src/printsupport/dialogs/qprintpreviewdialog.cpp

@@ -56,8 +56,6 @@
 #include <QtWidgets/qtoolbar.h>
 #include <QtCore/QCoreApplication>
 
-#ifndef QT_NO_PRINTPREVIEWDIALOG
-
 #include "private/qdialog_p.h"
 
 #include <QtWidgets/qformlayout.h>
@@ -787,7 +785,3 @@ QT_END_NAMESPACE
 
 #include "moc_qprintpreviewdialog.cpp"
 #include "qprintpreviewdialog.moc"
-
-#endif // QT_NO_PRINTPREVIEWDIALOG
-
-

src/printsupport/dialogs/qprintpreviewdialog.h

@@ -42,12 +42,11 @@
 
 #include <QtPrintSupport/qtprintsupportglobal.h>
 
-#ifndef QT_NO_PRINTPREVIEWDIALOG
-
 #include <QtWidgets/qdialog.h>
 
-QT_BEGIN_NAMESPACE
+QT_REQUIRE_CONFIG(printpreviewdialog);
 
+QT_BEGIN_NAMESPACE
 
 class QGraphicsView;
 class QPrintPreviewDialogPrivate;
@@ -91,6 +90,4 @@ private:
 
 QT_END_NAMESPACE
 
-#endif // QT_NO_PRINTPREVIEWDIALOG
-
 #endif // QPRINTPREVIEWDIALOG_H