Add a QPlatformPrinterSupportPlugin for Cocoa

This is used to create the actual QPrintEngine and to query the system
about printer information.

The QCocoaPrinterSupport actually lives in the Cocoa platform plugin,
so the QCocoaPrinterSupportPlugin uses the
createPlatformPrinterSupport() function in the QPlatformNativeInterface
(since the latter is a QObject). This is done to avoid adding a printing
related virtual function to QPlatformIntegration (since we have plans
to do a new printing API in the future).

Change-Id: I8bf9be668ff8ae1d07840e2af1e0846dc3299334
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoanativeinterface.h b/src/plugins/platforms/cocoa/qcocoanativeinterface.h
index d277cb2964..2665768edc 100644
--- a/src/plugins/platforms/cocoa/qcocoanativeinterface.h
+++ b/src/plugins/platforms/cocoa/qcocoanativeinterface.h
@@ -43,6 +43,7 @@
 #define QCOCOANATIVEINTERFACE_H
 
 #include <QtGui/QPlatformNativeInterface>
+#include <QtPrintSupport/QPlatformPrinterSupport>
 
 class QWidget;
 
@@ -51,6 +52,20 @@ class QCocoaNativeInterface : public QPlatformNativeInterface
     Q_OBJECT
 public:
     void *nativeResourceForWindow(const QByteArray &resourceString, QWindow *window);
+
+private:
+    /*
+        "Virtual" function to create the platform printer support
+        implementation.
+
+        We use an invokable function instead of a virtual one, we do not want
+        this in the QPlatform* API yet.
+
+        This was added here only because QPlatformNativeInterface is a QObject
+        and allow us to use QMetaObject::indexOfMethod() from the printsupport
+        plugin.
+    */
+    Q_INVOKABLE QPlatformPrinterSupport *createPlatformPrinterSupport();
 };
 
 #endif // QCOCOANATIVEINTERFACE_H