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>

3 files changed, 100 insertions, 0 deletions

diff --git a/src/plugins/printsupport/cocoa/cocoa.json b/src/plugins/printsupport/cocoa/cocoa.json
new file mode 100644
index 0000000000..85c38c42be
--- /dev/null
+++ b/src/plugins/printsupport/cocoa/cocoa.json
@@ -0,0 +1,3 @@
+{
+    "Keys": [ "cocoaprintersupport" ]
+}
diff --git a/src/plugins/printsupport/cocoa/cocoa.pro b/src/plugins/printsupport/cocoa/cocoa.pro
new file mode 100644
index 0000000000..353094cbae
--- /dev/null
+++ b/src/plugins/printsupport/cocoa/cocoa.pro
@@ -0,0 +1,13 @@
+TARGET = cocoaprintersupport
+load(qt_plugin)
+DESTDIR = $$QT.gui.plugins/printsupport
+
+QT += printsupport
+LIBS += -framework Cocoa
+
+SOURCES += main.cpp
+
+OTHER_FILES += cocoa.json
+
+target.path += $$[QT_INSTALL_PLUGINS]/printsupport
+INSTALLS += target
diff --git a/src/plugins/printsupport/cocoa/main.cpp b/src/plugins/printsupport/cocoa/main.cpp
new file mode 100644
index 0000000000..bc8f2e072c
--- /dev/null
+++ b/src/plugins/printsupport/cocoa/main.cpp
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QMetaMethod>
+#include <QtGui/QGuiApplication>
+#include <QtGui/QPlatformNativeInterface>
+#include <QtPrintSupport/QPlatformPrinterSupportPlugin>
+
+QT_BEGIN_NAMESPACE
+
+class QCocoaPrinterSupportPlugin : public QPlatformPrinterSupportPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.QPlatformPrinterSupportFactoryInterface" FILE "cocoa.json")
+
+public:
+    QStringList keys() const;
+    QPlatformPrinterSupport *create(const QString &);
+};
+
+QStringList QCocoaPrinterSupportPlugin::keys() const
+{
+    return QStringList(QStringLiteral("cocoaprintersupport"));
+}
+
+QPlatformPrinterSupport *QCocoaPrinterSupportPlugin::create(const QString &key)
+{
+    if (key.compare(key, QStringLiteral("cocoaprintersupport"), Qt::CaseInsensitive) != 0)
+        return 0;
+    QGuiApplication *app = qobject_cast<QGuiApplication *>(QCoreApplication::instance());
+    if (!app)
+        return 0;
+    QPlatformNativeInterface *platformNativeInterface = app->platformNativeInterface();
+    int at = platformNativeInterface->metaObject()->indexOfMethod("createPlatformPrinterSupport()");
+    if (at == -1)
+        return 0;
+    QMetaMethod createPlatformPrinterSupport = platformNativeInterface->metaObject()->method(at);
+    QPlatformPrinterSupport *platformPrinterSupport = 0;
+    if (!createPlatformPrinterSupport.invoke(platformNativeInterface, Q_RETURN_ARG(QPlatformPrinterSupport *, platformPrinterSupport)))
+        return 0;
+    return platformPrinterSupport;
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"