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