Add a LICENSE file and cleanup README.md a bit
[deb_shairplay.git] / AirTV-Qt / qtsingleapplication / examples / loader / main.cpp
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39
40 #include <qtsingleapplication.h>
41 #include <QtCore/QFile>
42 #include <QtGui/QMainWindow>
43 #include <QtGui/QPrinter>
44 #include <QtGui/QPainter>
45 #include <QtGui/QTextEdit>
46 #include <QtGui/QMdiArea>
47 #include <QtCore/QTextStream>
48
49 class MainWindow : public QMainWindow
50 {
51 Q_OBJECT
52 public:
53 MainWindow();
54
55 public slots:
56 void handleMessage(const QString& message);
57
58 signals:
59 void needToShow();
60
61 private:
62 QMdiArea *workspace;
63 };
64
65 MainWindow::MainWindow()
66 {
67 workspace = new QMdiArea(this);
68
69 setCentralWidget(workspace);
70 }
71
72 void MainWindow::handleMessage(const QString& message)
73 {
74 enum Action {
75 Nothing,
76 Open,
77 Print
78 } action;
79
80 action = Nothing;
81 QString filename = message;
82 if (message.toLower().startsWith("/print ")) {
83 filename = filename.mid(7);
84 action = Print;
85 } else if (!message.isEmpty()) {
86 action = Open;
87 }
88 if (action == Nothing) {
89 emit needToShow();
90 return;
91 }
92
93 QFile file(filename);
94 QString contents;
95 if (file.open(QIODevice::ReadOnly))
96 contents = file.readAll();
97 else
98 contents = "[[Error: Could not load file " + filename + "]]";
99
100 QTextEdit *view = new QTextEdit;
101 view->setPlainText(contents);
102
103 switch(action) {
104 case Print:
105 {
106 QPrinter printer;
107 view->print(&printer);
108 delete view;
109 }
110 break;
111
112 case Open:
113 {
114 workspace->addSubWindow(view);
115 view->setWindowTitle(message);
116 view->show();
117 emit needToShow();
118 }
119 break;
120 default:
121 break;
122 };
123 }
124
125 #include "main.moc"
126
127 int main(int argc, char **argv)
128 {
129 QtSingleApplication instance("File loader QtSingleApplication example", argc, argv);
130 QString message;
131 for (int a = 1; a < argc; ++a) {
132 message += argv[a];
133 if (a < argc-1)
134 message += " ";
135 }
136
137 if (instance.sendMessage(message))
138 return 0;
139
140 MainWindow mw;
141 mw.handleMessage(message);
142 mw.show();
143
144 QObject::connect(&instance, SIGNAL(messageReceived(const QString&)),
145 &mw, SLOT(handleMessage(const QString&)));
146
147 instance.setActivationWindow(&mw, false);
148 QObject::connect(&mw, SIGNAL(needToShow()), &instance, SLOT(activateWindow()));
149
150 return instance.exec();
151 }