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Diffstat (limited to 'src/gui/embedded/qwsembedwidget.cpp')
| -rw-r--r-- | src/gui/embedded/qwsembedwidget.cpp | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/gui/embedded/qwsembedwidget.cpp b/src/gui/embedded/qwsembedwidget.cpp new file mode 100644 index 0000000..a449c65 --- /dev/null +++ b/src/gui/embedded/qwsembedwidget.cpp @@ -0,0 +1,227 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 |