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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// This contains the definition of the PyQtProcy class.
//
// Copyright (c) 2010 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of PyQt.
//
// This file may be used under the terms of the GNU General Public
// License versions 2.0 or 3.0 as published by the Free Software
// Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
// included in the packaging of this file. Alternatively you may (at
// your option) use any later version of the GNU General Public
// License if such license has been publicly approved by Riverbank
// Computing Limited (or its successors, if any) and the KDE Free Qt
// Foundation. In addition, as a special exception, Riverbank gives you
// certain additional rights. These rights are described in the Riverbank
// GPL Exception version 1.1, which can be found in the file
// GPL_EXCEPTION.txt in this package.
//
// Please review the following information to ensure GNU General
// Public Licensing requirements will be met:
// http://trolltech.com/products/qt/licenses/licensing/opensource/. If
// you are unsure which license is appropriate for your use, please
// review the following information:
// http://trolltech.com/products/qt/licenses/licensing/licensingoverview
// or contact the sales department at sales@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#ifndef _QPYCORE_PYQTPROXY_H
#define _QPYCORE_PYQTPROXY_H
#include <Python.h>
#include <QByteArray>
#include <QMultiHash>
#include <QList>
#include <QMetaObject>
#include <QObject>
#include "qpycore_chimera.h"
#include "qpycore_pyqtboundsignal.h"
#include "qpycore_sip.h"
#include "qpycore_types.h"
class QMutex;
class PyQt_PyObject;
// This class is used as a signal on behalf of Python signals and as a slot on
// behalf of Python callables. It is derived from QObject but is not run
// through moc. Instead the normal moc-generated methods are handwritten in
// order to implement a universal signal or slot. This requires some knowledge
// of the internal implementation of signals and slots but it is likely that
// they will only change between major Qt versions.
class PyQtProxy : public QObject
{
public:
// The different roles a proxy can fulfill. It might have been better to
// implement each as a sub-class.
enum ProxyType {
ProxySlot,
ProxySignal,
};
PyQtProxy(QObject *tx, const char *sig);
PyQtProxy(sipWrapper *txObj, const char *sig, PyObject *rxObj,
const char *slot, const char **member, int flags);
PyQtProxy(qpycore_pyqtBoundSignal *bs, PyObject *rxObj,
const char **member);
~PyQtProxy();
static const QMetaObject staticMetaObject;
virtual const QMetaObject *metaObject() const;
virtual void *qt_metacast(const char *);
virtual int qt_metacall(QMetaObject::Call, int, void **);
void unislot(void **qargs);
static PyObject *invokeSlot(const qpycore_slot &slot, void **qargs);
void disable();
int getReceivers(const char *signal) const {return receivers(signal);}
static void deleteSlotProxies(void *tx, const char *sig);
static PyQtProxy *findSlotProxy(void *tx, const char *sig, PyObject *rxObj,
const char *slot, const char **member);
// The type of a proxy hash.
typedef QMultiHash<void *, PyQtProxy *> ProxyHash;
// Each proxy type is held in a different hash.
static ProxyHash proxy_slots;
static ProxyHash proxy_signals;
// The mutex around the proxies hashes.
static QMutex *mutex;
// The proxy type.
ProxyType type;
// The proxy flags.
int proxy_flags;
// The normalised signature.
QByteArray signature;
// Set if the proxy is in a hash.
bool hashed;
// The QObject transmitter we are proxying for (if any).
QObject *transmitter;
// The slot we are proxying for. (Only used when type is ProxySlot.)
qpycore_slot real_slot;
// The last QObject sender.
static QObject *last_sender;
private:
void init(QObject *qtx, ProxyHash *hash, void *key);
void remove();
// This object's key in the relevant hash.
void *saved_key;
// Only used when type is ProxySignal.
QMetaObject *sigmo;
PyQtProxy(const PyQtProxy &);
PyQtProxy &operator=(const PyQtProxy &);
};
// This acts as a proxy for short-circuit signals. The parent is the object we
// are proxying for. The object name is the name of the signal.
class PyQtShortcircuitSignalProxy : public QObject
{
Q_OBJECT
public:
PyQtShortcircuitSignalProxy(QObject *parent);
int getReceivers(const char *signal) const {return receivers(signal);}
void emit_signal(const PyQt_PyObject &args) {emit pysignal(args);}
static PyQtShortcircuitSignalProxy *find(QObject *tx, const char *sig);
signals:
void pysignal(const PyQt_PyObject &);
};
#endif
|
