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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QACTIVEXPLUGINOBJECT_H
#define QACTIVEXPLUGINOBJECT_H
#include <QtCore/qpointer.h>
#include <QtCore/qmap.h>
#include <QtWidgets/qwidget.h>
#include <QtGui/qpixmap.h>
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_MOVE(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 { 80, 70 };
unsigned m_drawFlags = DrawIndicator | DrawFrame | DrawControl;
QAxWidget *m_axobject = nullptr;
QPixmap m_axImage;
};
class QDesignerAxPluginWidget : public QDesignerAxWidget
{
// No Q_OBJECT here! - meta functionality is overridden
public:
explicit QDesignerAxPluginWidget(QWidget *parent);
virtual ~QDesignerAxPluginWidget();
const QMetaObject *metaObject() const override;
int qt_metacall(QMetaObject::Call, int, void **) override;
private:
QMap<int, bool> m_propValues;
};
template <> inline QDesignerAxWidget *qobject_cast<QDesignerAxWidget*>(QObject *o)
{
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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