Sandboxie/SandboxiePlus/QtSingleApp/examples/loader/main.cpp

153 lines
4.1 KiB
C++

/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** $QT_END_LICENSE$
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****************************************************************************/
#include <qtsingleapplication.h>
#include <QFile>
#include <QMainWindow>
#include <QPrinter>
#include <QPainter>
#include <QTextEdit>
#include <QMdiArea>
#include <QTextStream>
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow();
public slots:
void handleMessage(const QString& message);
signals:
void needToShow();
private:
QMdiArea *workspace;
};
MainWindow::MainWindow()
{
workspace = new QMdiArea(this);
setCentralWidget(workspace);
}
void MainWindow::handleMessage(const QString& message)
{
enum Action {
Nothing,
Open,
Print
} action;
action = Nothing;
QString filename = message;
if (message.toLower().startsWith("/print ")) {
filename = filename.mid(7);
action = Print;
} else if (!message.isEmpty()) {
action = Open;
}
if (action == Nothing) {
emit needToShow();
return;
}
QFile file(filename);
QString contents;
if (file.open(QIODevice::ReadOnly))
contents = file.readAll();
else
contents = "[[Error: Could not load file " + filename + "]]";
QTextEdit *view = new QTextEdit;
view->setPlainText(contents);
switch(action) {
case Print:
{
QPrinter printer;
view->print(&printer);
delete view;
}
break;
case Open:
{
workspace->addSubWindow(view);
view->setWindowTitle(message);
view->show();
emit needToShow();
}
break;
default:
break;
};
}
#include "main.moc"
int main(int argc, char **argv)
{
QtSingleApplication instance("File loader QtSingleApplication example", argc, argv);
QString message;
for (int a = 1; a < argc; ++a) {
message += argv[a];
if (a < argc-1)
message += " ";
}
if (instance.sendMessage(message))
return 0;
MainWindow mw;
mw.handleMessage(message);
mw.show();
QObject::connect(&instance, SIGNAL(messageReceived(const QString&)),
&mw, SLOT(handleMessage(const QString&)));
instance.setActivationWindow(&mw, false);
QObject::connect(&mw, SIGNAL(needToShow()), &instance, SLOT(activateWindow()));
return instance.exec();
}