examples: Fix build for configurations that do not have printsupport

printsupport features are only available if the module is available for
the configuration. Every printer feature check has to be coupled with a
check for the module itself.

Change-Id: Id2ca84e71d5d74463d0ff35e8b18b252a779a883
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

examples/widgets/itemviews/spreadsheet/printview.cpp

@@ -50,8 +50,12 @@
 
 #include "printview.h"
 
-#ifndef QT_NO_PRINTER
-#include <QPrinter>
+#if defined(QT_PRINTSUPPORT_LIB)
+#  include <QtPrintSupport/qtprintsupportglobal.h>
+
+#  if QT_CONFIG(printer)
+#    include <QPrinter>
+#  endif
 #endif
 
 PrintView::PrintView()
@@ -62,9 +66,11 @@ PrintView::PrintView()
 
 void PrintView::print(QPrinter *printer)
 {
-#ifndef QT_NO_PRINTER
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     resize(printer->width(), printer->height());
     render(printer);
+#else
+    Q_UNUSED(printer)
 #endif
 }
 

examples/widgets/itemviews/spreadsheet/spreadsheet.cpp

@@ -638,7 +638,7 @@ QString encode_pos(int row, int col)
 
 void SpreadSheet::print()
 {
-#if QT_CONFIG(printpreviewdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printpreviewdialog)
     QPrinter printer(QPrinter::ScreenResolution);
     QPrintPreviewDialog dlg(&printer);
     PrintView view;

examples/widgets/richtext/textedit/textedit.cpp

@@ -197,7 +197,7 @@ void TextEdit::setupFileActions()
     a->setPriority(QAction::LowPriority);
     menu->addSeparator();
 
-#ifndef QT_NO_PRINTER
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     const QIcon printIcon = QIcon::fromTheme("document-print", QIcon(rsrcPath + "/fileprint.png"));
     a = menu->addAction(printIcon, tr("&Print..."), this, &TextEdit::filePrint);
     a->setPriority(QAction::LowPriority);
@@ -559,7 +559,7 @@ void TextEdit::filePrint()
 
 void TextEdit::filePrintPreview()
 {
-#if QT_CONFIG(printpreviewdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printpreviewdialog)
     QPrinter printer(QPrinter::HighResolution);
     QPrintPreviewDialog preview(&printer, this);
     connect(&preview, &QPrintPreviewDialog::paintRequested, this, &TextEdit::printPreview);
@@ -569,17 +569,17 @@ void TextEdit::filePrintPreview()
 
 void TextEdit::printPreview(QPrinter *printer)
 {
-#ifdef QT_NO_PRINTER
-    Q_UNUSED(printer);
-#else
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     textEdit->print(printer);
+#else
+    Q_UNUSED(printer)
 #endif
 }
 
 
 void TextEdit::filePrintPdf()
 {
-#ifndef QT_NO_PRINTER
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
 //! [0]
     QFileDialog fileDialog(this, tr("Export PDF"));
     fileDialog.setAcceptMode(QFileDialog::AcceptSave);

examples/widgets/tutorials/notepad/notepad.pro

@@ -1,6 +1,8 @@
 TEMPLATE = app
 TARGET = notepad
 
+QT += widgets
+
 qtHaveModule(printsupport): QT += printsupport
 requires(qtConfig(fontdialog))
 

examples/widgets/widgets/imageviewer/imageviewer.cpp

@@ -69,10 +69,11 @@
 #include <QStatusBar>
 
 #if defined(QT_PRINTSUPPORT_LIB)
-#include <QtPrintSupport/qtprintsupportglobal.h>
-#if QT_CONFIG(printdialog)
-#include <QPrintDialog>
-#endif
+#  include <QtPrintSupport/qtprintsupportglobal.h>
+
+#  if QT_CONFIG(printdialog)
+#    include <QPrintDialog>
+#  endif
 #endif
 
 //! [0]

examples/widgets/widgets/imageviewer/imageviewer.h

@@ -53,8 +53,12 @@
 
 #include <QMainWindow>
 #include <QImage>
-#ifndef QT_NO_PRINTER
-#include <QPrinter>
+#if defined(QT_PRINTSUPPORT_LIB)
+#  include <QtPrintSupport/qtprintsupportglobal.h>
+
+#  if QT_CONFIG(printer)
+#    include <QPrinter>
+#  endif
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -100,7 +104,7 @@ private:
     QScrollArea *scrollArea;
     double scaleFactor = 1;
 
-#ifndef QT_NO_PRINTER
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     QPrinter printer;
 #endif