Port QMacCocoaViewContainer to Qt 5.

Includes example.

Change-Id: Ifdda5c535d0ec41694712405d921b2c32cb8dfc8
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>

examples/widgets/mac/mac.pro

@@ -1,5 +1,7 @@
 TEMPLATE = subdirs
+
 macx {
     SUBDIRS = \
-            qmacnativewidget
-}
+        qmacnativewidget \
+        qmacnativewidget
+}

examples/widgets/mac/qmaccocoaviewcontainer/main.mm

@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtMacExtras module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtWidgets>
+#include <Cocoa/Cocoa.h>
+#include <QMacCocoaViewContainer>
+
+class WindowWidget : public QWidget
+{
+public:
+    WindowWidget()
+    {
+        QMacCocoaViewContainer *cocoaViewContainer = new QMacCocoaViewContainer(0, this);
+        cocoaViewContainer->move(100, 100);
+        cocoaViewContainer->resize(300, 300);
+        NSTextView *text = [[NSTextView alloc] initWithFrame : NSMakeRect(0, 0, 300, 300)];
+        cocoaViewContainer->setCocoaView(text);
+    }
+};
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    WindowWidget widget;
+    widget.show();
+
+    return app.exec();
+}

examples/widgets/mac/qmaccocoaviewcontainer/qmaccocoaviewcontainer.pro

@@ -0,0 +1,7 @@
+TEMPLATE = app
+
+OBJECTIVE_SOURCES += main.mm
+LIBS += -framework Cocoa
+
+QT += widgets
+

src/widgets/widgets/qmaccocoaviewcontainer_mac.h

@@ -44,20 +44,20 @@
 
 #include <QtWidgets/QWidget>
 
+Q_FORWARD_DECLARE_OBJC_CLASS(NSView);
+
 QT_BEGIN_NAMESPACE
 
-
 class QMacCocoaViewContainerPrivate;
-
 class Q_WIDGETS_EXPORT QMacCocoaViewContainer : public QWidget
 {
     Q_OBJECT
 public:
-    QMacCocoaViewContainer(void *cocoaViewToWrap, QWidget *parent = 0);
+    QMacCocoaViewContainer(NSView *cocoaViewToWrap, QWidget *parent = 0);
     virtual ~QMacCocoaViewContainer();
 
-    void setCocoaView(void *cocoaViewToWrap);
-    void *cocoaView() const;
+    void setCocoaView(NSView *view);
+    NSView *cocoaView() const;
 
 private:
     Q_DECLARE_PRIVATE(QMacCocoaViewContainer)

src/widgets/widgets/qmaccocoaviewcontainer_mac.mm

@@ -40,9 +40,12 @@
 ****************************************************************************/
 
 #import <Cocoa/Cocoa.h>
-#include <private/qwidget_p.h>
 #include "qmaccocoaviewcontainer_mac.h"
-#include <private/qt_mac_p.h>
+
+#include <QtCore/QDebug>
+#include <QtGui/QWindow>
+#include <qpa/qplatformnativeinterface.h>
+#include <private/qwidget_p.h>
 
 /*!
     \class QMacCocoaViewContainer
@@ -91,6 +94,20 @@
 
 QT_BEGIN_NAMESPACE
 
+namespace {
+// TODO use QtMacExtras copy of this function when available.
+inline QPlatformNativeInterface::NativeResourceForIntegrationFunction resolvePlatformFunction(const QByteArray &functionName)
+{
+    QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
+    QPlatformNativeInterface::NativeResourceForIntegrationFunction function =
+        nativeInterface->nativeResourceFunctionForIntegration(functionName);
+    if (!function)
+         qWarning() << "Qt could not resolve function" << functionName
+                    << "from QGuiApplication::platformNativeInterface()->nativeResourceFunctionForIntegration()";
+    return function;
+}
+} //namespsace
+
 class QMacCocoaViewContainerPrivate : public QWidgetPrivate
 {
     Q_DECLARE_PUBLIC(QMacCocoaViewContainer)
@@ -111,20 +128,22 @@ QMacCocoaViewContainerPrivate::~QMacCocoaViewContainerPrivate()
 }
 
 /*!
-    \fn QMacCocoaViewContainer::QMacCocoaViewContainer(void *cocoaViewToWrap, QWidget *parent)
+    \fn QMacCocoaViewContainer::QMacCocoaViewContainer(NSView *cocoaViewToWrap, QWidget *parent)
 
     Create a new QMacCocoaViewContainer using the NSView pointer in \a
     cocoaViewToWrap with parent, \a parent. QMacCocoaViewContainer will
     retain \a cocoaViewToWrap.
 
-    \a cocoaViewToWrap is a void pointer that allows the header to be included
-    with C++ source.
 */
-QMacCocoaViewContainer::QMacCocoaViewContainer(void *cocoaViewToWrap, QWidget *parent)
+QMacCocoaViewContainer::QMacCocoaViewContainer(NSView *view, QWidget *parent)
    : QWidget(*new QMacCocoaViewContainerPrivate, parent, 0)
 {
-    if (cocoaViewToWrap)
-        setCocoaView(cocoaViewToWrap);
+
+    if (view)
+        setCocoaView(view);
+
+    // QMacCocoaViewContainer requires a native window handle.
+    setAttribute(Qt::WA_NativeWindow);
 }
 
 /*!
@@ -132,33 +151,37 @@ QMacCocoaViewContainer::QMacCocoaViewContainer(void *cocoaViewToWrap, QWidget *p
 */
 QMacCocoaViewContainer::~QMacCocoaViewContainer()
 {
+
 }
 
 /*!
-    Returns the NSView that has been set on this container.  The returned view
-    has been autoreleased, so you will need to retain it if you want to make
-    use of it.
+    Returns the NSView that has been set on this container.
 */
-void *QMacCocoaViewContainer::cocoaView() const
+NSView *QMacCocoaViewContainer::cocoaView() const
 {
     Q_D(const QMacCocoaViewContainer);
-    return [[d->nsview retain] autorelease];
+    return d->nsview;
 }
 
 /*!
     Sets the NSView to contain to be \a cocoaViewToWrap and retains it. If this
     container already had a view set, it will release the previously set view.
 */
-void QMacCocoaViewContainer::setCocoaView(void *cocoaViewToWrap)
+void QMacCocoaViewContainer::setCocoaView(NSView *view)
 {
     Q_D(QMacCocoaViewContainer);
-    QMacCocoaAutoReleasePool pool;
-    NSView *view = static_cast<NSView *>(cocoaViewToWrap);
     NSView *oldView = d->nsview;
-    destroy(true, true);
     [view retain];
     d->nsview = view;
-    create(WId(d->nsview), false, true);
+
+    // Create window and platformwindow
+    winId();
+    QPlatformWindow *platformWindow = this->windowHandle()->handle();
+
+    // Set the new view as the content view for the window.
+    typedef void (*SetWindowContentViewFunction)(QPlatformWindow *window, NSView *nsview);
+    reinterpret_cast<SetWindowContentViewFunction>(resolvePlatformFunction("setwindowcontentview"))(platformWindow, view);
+
     [oldView release];
 }
 

src/widgets/widgets/widgets.pri

@@ -143,21 +143,21 @@ SOURCES += \
 
 macx {
     HEADERS += \
-        widgets/qmacnativewidget_mac.h
+        widgets/qmacnativewidget_mac.h \
+        widgets/qmaccocoaviewcontainer_mac.h
 
     OBJECTIVE_SOURCES += \
         widgets/qmenu_mac.mm \
-        widgets/qmacnativewidget_mac.mm
+        widgets/qmacnativewidget_mac.mm \
+        widgets/qmaccocoaviewcontainer_mac.mm
 }
 
 # TODO
 false:mac {
-    HEADERS += widgets/qmaccocoaviewcontainer_mac.h
     OBJECTIVE_HEADERS += widgets/qcocoatoolbardelegate_mac_p.h \
                          widgets/qcocoamenu_mac_p.h
-    OBJECTIVE_SOURCES += widgets/qmaccocoaviewcontainer_mac.mm \
-                         widgets/qcocoatoolbardelegate_mac.mm \
-                         widgets/qmainwindowlayout_mac.mm \
+    OBJECTIVE_SOURCES += widgets/qcocoatoolbardelegate_mac.mm \
+                         widgets/qmainwindowlayout_mac.mm
 
 }