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
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples 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 ENVIRONMENT_H
#define ENVIRONMENT_H
#include <qobject.h>
#include <qlist.h>
#include <qhash.h>
#include <QTimerEvent>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QScriptEngine>
#include <QScriptable>
class QContext2DCanvas;
//! [0]
class Environment : public QObject
{
Q_OBJECT
Q_PROPERTY(QScriptValue document READ document)
public:
Environment(QObject *parent = 0);
~Environment();
QScriptValue document() const;
void addCanvas(QContext2DCanvas *canvas);
QContext2DCanvas *canvasByName(const QString &name) const;
QList<QContext2DCanvas*> canvases() const;
QScriptValue evaluate(const QString &code,
const QString &fileName = QString());
QScriptValue toWrapper(QObject *object);
void handleEvent(QContext2DCanvas *canvas, QMouseEvent *e);
void handleEvent(QContext2DCanvas *canvas, QKeyEvent *e);
void reset();
//! [0]
QScriptEngine *engine() const;
//! [1]
public slots:
int setInterval(const QScriptValue &expression, int delay);
void clearInterval(int timerId);
int setTimeout(const QScriptValue &expression, int delay);
void clearTimeout(int timerId);
//! [1]
//! [2]
signals:
void scriptError(const QScriptValue &error);
//! [2]
protected:
void timerEvent(QTimerEvent *event);
private:
QScriptValue eventHandler(QContext2DCanvas *canvas,
const QString &type, QScriptValue *who);
QScriptValue newFakeDomEvent(const QString &type,
const QScriptValue &target);
void maybeEmitScriptError();
QScriptEngine *m_engine;
QScriptValue m_originalGlobalObject;
QScriptValue m_document;
QList<QContext2DCanvas*> m_canvases;
QHash<int, QScriptValue> m_intervalHash;
QHash<int, QScriptValue> m_timeoutHash;
};
//! [3]
class Document : public QObject
{
Q_OBJECT
public:
Document(Environment *env);
~Document();
public slots:
QScriptValue getElementById(const QString &id) const;
QScriptValue getElementsByTagName(const QString &name) const;
// EventTarget
void addEventListener(const QString &type, const QScriptValue &listener,
bool useCapture);
};
//! [3]
class CanvasGradientPrototype : public QObject, public QScriptable
{
Q_OBJECT
protected:
CanvasGradientPrototype(QObject *parent = 0);
public:
static void setup(QScriptEngine *engine);
public slots:
void addColorStop(qreal offset, const QString &color);
};
#endif
|
