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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui 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 "qwsembedwidget.h"
#ifndef QT_NO_QWSEMBEDWIDGET
#include <qwsdisplay_qws.h>
#include <private/qwidget_p.h>
#include <private/qwsdisplay_qws_p.h>
#include <private/qwscommand_qws_p.h>
QT_BEGIN_NAMESPACE
// TODO:
// Must remove window decorations from the embedded window
// Focus In/Out, Keyboard/Mouse...
//
// BUG: what if my parent change parent?
class QWSEmbedWidgetPrivate : public QWidgetPrivate
{
Q_DECLARE_PUBLIC(QWSEmbedWidget);
public:
QWSEmbedWidgetPrivate(int winId);
void updateWindow();
void resize(const QSize &size);
QWidget *window;
WId windowId;
WId embeddedId;
};
QWSEmbedWidgetPrivate::QWSEmbedWidgetPrivate(int winId)
: window(0), windowId(0), embeddedId(winId)
{
}
void QWSEmbedWidgetPrivate::updateWindow()
{
Q_Q(QWSEmbedWidget);
QWidget *win = q->window();
if (win == window)
return;
if (window) {
window->removeEventFilter(q);
QWSEmbedCommand command;
command.setData(windowId, embeddedId, QWSEmbedEvent::StopEmbed);
QWSDisplay::instance()->d->sendCommand(command);
}
window = win;
if (!window)
return;
windowId = window->winId();
QWSEmbedCommand command;
command.setData(windowId, embeddedId, QWSEmbedEvent::StartEmbed);
QWSDisplay::instance()->d->sendCommand(command);
window->installEventFilter(q);
q->installEventFilter(q);
}
void QWSEmbedWidgetPrivate::resize(const QSize &size)
{
if (!window)
return;
Q_Q(QWSEmbedWidget);
QWSEmbedCommand command;
command.setData(windowId, embeddedId, QWSEmbedEvent::Region,
QRect(q->mapToGlobal(QPoint(0, 0)), size));
QWSDisplay::instance()->d->sendCommand(command);
}
/*!
\class QWSEmbedWidget
\since 4.2
\ingroup qws
\ingroup advanced
\brief The QWSEmbedWidget class enables embedded top-level widgets
in Qt for Embedded Linux.
Note that this class is only available in \l{Qt for Embedded Linux}.
QWSEmbedWidget inherits QWidget and acts as any other widget, but
in addition it is capable of embedding another top-level widget.
An example of use is when painting directly onto the screen using
the QDirectPainter class. Then the reserved region can be embedded
into an instance of the QWSEmbedWidget class, providing for
example event handling and size policies for the reserved region.
All that is required to embed a top-level widget is its window ID.
\sa {Qt for Embedded Linux Architecture}
*/
/*!
Constructs a widget with the given \a parent, embedding the widget
identified by the given window \a id.
*/
QWSEmbedWidget::QWSEmbedWidget(WId id, QWidget *parent)
: QWidget(*new QWSEmbedWidgetPrivate(id), parent, 0)
{
Q_D(QWSEmbedWidget);
d->updateWindow();
}
/*!
Destroys this widget.
*/
QWSEmbedWidget::~QWSEmbedWidget()
{
Q_D(QWSEmbedWidget);
if (!d->window)
return;
QWSEmbedCommand command;
command.setData(d->windowId, d->embeddedId, QWSEmbedEvent::StopEmbed);
QWSDisplay::instance()->d->sendCommand(command);
}
/*!
\reimp
*/
bool QWSEmbedWidget::eventFilter(QObject *object, QEvent *event)
{
Q_D(QWSEmbedWidget);
if (object == d->window && event->type() == QEvent::Move)
resizeEvent(0);
else if (object == this && event->type() == QEvent::Hide)
d->resize(QSize());
return QWidget::eventFilter(object, event);
}
/*!
\reimp
*/
void QWSEmbedWidget::changeEvent(QEvent *event)
{
Q_D(QWSEmbedWidget);
if (event->type() == QEvent::ParentChange)
d->updateWindow();
}
/*!
\reimp
*/
void QWSEmbedWidget::resizeEvent(QResizeEvent*)
{
Q_D(QWSEmbedWidget);
d->resize(rect().size());
}
/*!
\reimp
*/
void QWSEmbedWidget::moveEvent(QMoveEvent*)
{
resizeEvent(0);
}
/*!
\reimp
*/
void QWSEmbedWidget::hideEvent(QHideEvent*)
{
Q_D(QWSEmbedWidget);
d->resize(QSize());
}
/*!
\reimp
*/
void QWSEmbedWidget::showEvent(QShowEvent*)
{
Q_D(QWSEmbedWidget);
d->resize(rect().size());
}
QT_END_NAMESPACE
#endif // QT_NO_QWSEMBEDWIDGET
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