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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Designer 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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QACTIVEXPLUGINOBJECT_H
#define QACTIVEXPLUGINOBJECT_H
#include <QtCore/QPointer>
#include <QtCore/QMap>
#include <QtGui/QWidget>
#include <QtGui/QPixmap>
QT_BEGIN_NAMESPACE
class QAxWidget;
/* QDesignerAxWidget aggregates QAxWidget to keep it out of the event loop while applying
* properties directly.
* Thus, it is possible to set property values in designer that are out of range
* for the control, which might cause it to throw exceptions.
*
* QDesignerAxWidget is the base class following the internal naming
* conventions that makes the control property visible to the introspection interface.
*
* The trick to aggregate a QAxWidget is to overwrite the metaObject() function
* generated by moc to return the QMetaObject of QAxWidget. This is what QDesignerAxPluginWidget does. */
class QDesignerAxWidget : public QWidget
{
Q_OBJECT
Q_PROPERTY(QString control READ control WRITE setControl RESET resetControl DESIGNABLE true)
Q_DISABLE_COPY(QDesignerAxWidget)
protected:
explicit QDesignerAxWidget(QWidget *parent);
public:
virtual ~QDesignerAxWidget();
bool loadControl(const QString &clsid);
void resetControl();
void setControl(const QString &clsid);
QString control() const;
QSize sizeHint() const;
QSize minimumSizeHint() const;
bool loaded() { return (m_axobject != 0); }
static QPixmap widgetIcon();
enum { DrawIndicator = 0x1, DrawFrame = 0x2, DrawControl = 0x4 };
unsigned drawFlags() const { return m_drawFlags; }
void setDrawFlags(unsigned f) { m_drawFlags = f; }
protected:
void paintEvent(QPaintEvent *event);
QAxWidget *axobject() const { return m_axobject; }
private:
const QSize m_defaultSize;
unsigned m_drawFlags;
QAxWidget *m_axobject;
QPixmap m_axImage;
};
class QDesignerAxPluginWidget : public QDesignerAxWidget
{
// No Q_OBJECT here! - meta functionality is overriden
public:
explicit QDesignerAxPluginWidget(QWidget *parent);
virtual ~QDesignerAxPluginWidget();
virtual const QMetaObject *metaObject() const;
virtual int qt_metacall(QMetaObject::Call, int, void **);
private:
QMap<int, bool> m_propValues;
};
#if defined Q_CC_MSVC && _MSC_VER < 1300
template <> inline QDesignerAxWidget *qobject_cast_helper<QDesignerAxWidget*>(QObject *o, QDesignerAxWidget*)
#else
template <> inline QDesignerAxWidget *qobject_cast<QDesignerAxWidget*>(QObject *o)
#endif
{
if (!o)
return 0;
// Unloaded state
if (strcmp(o->metaObject()->className(), "QDesignerAxWidget") == 0)
return static_cast<QDesignerAxPluginWidget*>(o);
// Loaded state with fake meta object
if (strcmp(o->metaObject()->className(), "QAxWidget") == 0)
return static_cast<QDesignerAxPluginWidget*>(o);
return 0;
}
QT_END_NAMESPACE
#endif // ACTIVEQT_EXTRAINFO_H
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