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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "window.h"
#include "environment.h"
#include "context2d.h"
#include "qcontext2dcanvas.h"
#include <QHBoxLayout>
#include <QListWidget>
#include <QDir>
#include <QMessageBox>
#ifndef QT_NO_SCRIPTTOOLS
#include <QAction>
#include <QApplication>
#include <QMainWindow>
#include <QPushButton>
#include <QVBoxLayout>
#include <QScriptEngineDebugger>
#endif
static QString scriptsDir()
{
if (QFile::exists("./scripts"))
return "./scripts";
return ":/scripts";
}
//! [0]
Window::Window(QWidget *parent)
: QWidget(parent)
{
m_env = new Environment(this);
QObject::connect(m_env, SIGNAL(scriptError(QScriptValue)),
this, SLOT(reportScriptError(QScriptValue)));
Context2D *context = new Context2D(this);
context->setSize(150, 150);
m_canvas = new QContext2DCanvas(context, m_env, this);
m_canvas->setFixedSize(context->size());
m_canvas->setObjectName("tutorial");
m_env->addCanvas(m_canvas);
//! [0]
#ifndef QT_NO_SCRIPTTOOLS
QVBoxLayout *vbox = new QVBoxLayout();
vbox->addWidget(m_canvas);
m_debugButton = new QPushButton(tr("Run in Debugger"));
connect(m_debugButton, SIGNAL(clicked()), this, SLOT(runInDebugger()));
vbox->addWidget(m_debugButton);
#endif
QHBoxLayout *hbox = new QHBoxLayout(this);
m_view = new QListWidget(this);
m_view->setEditTriggers(QAbstractItemView::NoEditTriggers);
hbox->addWidget(m_view);
#ifndef QT_NO_SCRIPTTOOLS
hbox->addLayout(vbox);
#else
hbox->addWidget(m_canvas);
#endif
//! [1]
QDir dir(scriptsDir());
QFileInfoList entries = dir.entryInfoList(QStringList() << "*.js");
for (int i = 0; i < entries.size(); ++i)
m_view->addItem(entries.at(i).fileName());
connect(m_view, SIGNAL(currentItemChanged(QListWidgetItem*, QListWidgetItem*)),
this, SLOT(selectScript(QListWidgetItem*)));
//! [1]
#ifndef QT_NO_SCRIPTTOOLS
m_debugger = new QScriptEngineDebugger(this);
m_debugger->attachTo(m_env->engine());
m_debugWindow = m_debugger->standardWindow();
m_debugWindow->setWindowModality(Qt::ApplicationModal);
m_debugWindow->resize(1280, 704);
#endif
setWindowTitle(tr("Context 2D"));
}
//! [2]
void Window::selectScript(QListWidgetItem *item)
{
QString fileName = item->text();
runScript(fileName, /*debug=*/false);
}
//! [2]
void Window::reportScriptError(const QScriptValue &error)
{
QMessageBox::warning(this, tr("Context 2D"), tr("Line %0: %1")
.arg(error.property("lineNumber").toInt32())
.arg(error.toString()));
}
#ifndef QT_NO_SCRIPTTOOLS
//! [3]
void Window::runInDebugger()
{
QListWidgetItem *item = m_view->currentItem();
if (item) {
QString fileName = item->text();
runScript(fileName, /*debug=*/true);
}
}
//! [3]
#endif
//! [4]
void Window::runScript(const QString &fileName, bool debug)
{
QFile file(scriptsDir() + "/" + fileName);
file.open(QIODevice::ReadOnly);
QString contents = file.readAll();
file.close();
m_env->reset();
#ifndef QT_NO_SCRIPTTOOLS
if (debug)
m_debugger->action(QScriptEngineDebugger::InterruptAction)->trigger();
#else
Q_UNUSED(debug);
#endif
QScriptValue ret = m_env->evaluate(contents, fileName);
#ifndef QT_NO_SCRIPTTOOLS
m_debugWindow->hide();
#endif
if (ret.isError())
reportScriptError(ret);
}
//! [4]
|
