source: trunk/src/gui/widgets/qmacnativewidget_mac.mm@ 138

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at [email protected].
** $QT_END_LICENSE$
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#import <Cocoa/Cocoa.h>
#import <private/qcocoaview_mac_p.h>
#include "qmacnativewidget_mac.h"
#include <private/qwidget_p.h>

/*!
    \class QMacNativeWidget
    \since 4.5
    \brief The QMacNativeWidget class provides a widget for Mac OS X that provides a way to put Qt widgets into Carbon
    or Cocoa hierarchies depending on how Qt was configured.

    \ingroup advanced

    On Mac OS X, there is a difference between a window and view;
    normally expressed as widgets in Qt.  Qt makes assumptions about its
    parent-child hierarchy that make it complex to put an arbitrary Qt widget
    into a hierarchy of "normal" views from Apple frameworks. QMacNativeWidget
    bridges the gap between views and windows and makes it possible to put a
    hierarchy of Qt widgets into a non-Qt window or view.

    QMacNativeWidget pretends it is a window (i.e. isWindow() will return true),
    but it cannot be shown on its own. It needs to be put into a window
    when it is created or later through a native call.

    QMacNativeWidget works for either Carbon or Cocoa depending on how Qt was configured. If Qt is
    using Carbon, QMacNativeWidget will embed into Carbon hierarchies. If Qt is
    using Cocoa, QMacNativeWidget embeds into Cocoa hierarchies.

    Here is an example of putting a QPushButton into a NSWindow:

    \snippet doc/src/snippets/qmacnativewidget/main.mm 0

    On Carbon, this would do the equivalent:

    \snippet doc/src/snippets/qmacnativewidget/main.mm 1

    Note that QMacNativeWidget requires knowledge of Carbon or Cocoa. All it
    does is get the Qt hierarchy into a window not owned by Qt. It is then up
    to the programmer to ensure it is placed correctly in the window and
    responds correctly to events.
*/

QT_BEGIN_NAMESPACE

class QMacNativeWidgetPrivate : public QWidgetPrivate
{
};

extern OSViewRef qt_mac_create_widget(QWidget *widget, QWidgetPrivate *widgetPrivate, OSViewRef parent);


/*!
    Create a QMacNativeWidget with \a parentView as its "superview" (i.e.,
    parent). The \a parentView is either an HIViewRef if Qt is using Carbon or
    a NSView pointer if Qt is using Cocoa.
*/
QMacNativeWidget::QMacNativeWidget(void *parentView)
    : QWidget(*new QMacNativeWidgetPrivate, 0, Qt::Window)
{
    Q_D(QMacNativeWidget);
    OSViewRef myView = qt_mac_create_widget(this, d, OSViewRef(parentView));

    d->topData()->embedded = true;
    create(WId(myView), false, false);
    setPalette(QPalette(Qt::transparent));
    setAttribute(Qt::WA_SetPalette, false);
    setAttribute(Qt::WA_LayoutUsesWidgetRect);
}

/*!
    Destroy the QMacNativeWidget.
*/
QMacNativeWidget::~QMacNativeWidget()
{
}

/*!
    \reimp
*/
QSize QMacNativeWidget::sizeHint() const
{
    return QSize(200, 200);
}
/*!
    \reimp
*/
bool QMacNativeWidget::event(QEvent *ev)
{
    return QWidget::event(ev);
}

QT_END_NAMESPACE