1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** 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 overridden
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
|
