view main/main.cpp @ 25:e74f508db18c

* Add setRatio method to the time stretcher, and make it possible to change
  the ratio without having to construct and replace the time stretcher.  This
  means we can do it seamlessly.  Add a lot more ratios to the
  time stretch control in the main window

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "MainWindow.h"

#include "system/System.h"
#include "system/Init.h"
#include "base/TempDirectory.h"
#include "base/PropertyContainer.h"
#include "base/Preferences.h"

#include <QMetaType>
#include <QApplication>
#include <QDesktopWidget>
#include <QMessageBox>
#include <QTranslator>
#include <QLocale>
#include <QSettings>
#include <QIcon>
#include <QSessionManager>

#include <iostream>
#include <signal.h>

//!!! catch trappable signals, cleanup temporary directory etc
//!!! check for crap left over from previous run

static QMutex cleanupMutex;

static void
signalHandler(int /* signal */)
{
    // Avoid this happening more than once across threads

    cleanupMutex.lock();
    std::cerr << "signalHandler: cleaning up and exiting" << std::endl;
    TempDirectory::getInstance()->cleanup();
    exit(0); // without releasing mutex
}

class SVApplication : public QApplication
{
public:
    SVApplication(int argc, char **argv) :
        QApplication(argc, argv),
        m_mainWindow(0) { }
    virtual ~SVApplication() { }

    void setMainWindow(MainWindow *mw) { m_mainWindow = mw; }
    void releaseMainWindow() { m_mainWindow = 0; }

    virtual void commitData(QSessionManager &manager) {
        if (!m_mainWindow) return;
        bool mayAskUser = manager.allowsInteraction();
        bool success = m_mainWindow->commitData(mayAskUser);
        manager.release();
        if (!success) manager.cancel();
    }

protected:
    MainWindow *m_mainWindow;
};

int
main(int argc, char **argv)
{
    SVApplication application(argc, argv);

    signal(SIGINT,  signalHandler);
    signal(SIGTERM, signalHandler);

#ifndef Q_WS_WIN32
    signal(SIGHUP,  signalHandler);
    signal(SIGQUIT, signalHandler);
#endif

    svSystemSpecificInitialisation();

    QApplication::setOrganizationName("sonic-visualiser");
    QApplication::setOrganizationDomain("sonicvisualiser.org");
    QApplication::setApplicationName("sonic-visualiser");

    QApplication::setWindowIcon(QIcon(":icons/waveform.png"));

    QString language = QLocale::system().name();

    QTranslator qtTranslator;
    QString qtTrName = QString("qt_%1").arg(language);
    std::cerr << "Loading " << qtTrName.toStdString() << "..." << std::endl;
    qtTranslator.load(qtTrName);
    application.installTranslator(&qtTranslator);

    QTranslator svTranslator;
    QString svTrName = QString("sonic-visualiser_%1").arg(language);
    std::cerr << "Loading " << svTrName.toStdString() << "..." << std::endl;
    svTranslator.load(svTrName, ":i18n");
    application.installTranslator(&svTranslator);

    // Permit size_t and PropertyName to be used as args in queued signal calls
    qRegisterMetaType<size_t>("size_t");
    qRegisterMetaType<PropertyContainer::PropertyName>("PropertyContainer::PropertyName");

    MainWindow gui;
    application.setMainWindow(&gui);

    QDesktopWidget *desktop = QApplication::desktop();
    QRect available = desktop->availableGeometry();

    int width = available.width() * 2 / 3;
    int height = available.height() / 2;
    if (height < 450) height = available.height() * 2 / 3;
    if (width > height * 2) width = height * 2;

    QSettings settings;
    settings.beginGroup("MainWindow");
    QSize size = settings.value("size", QSize(width, height)).toSize();
    gui.resize(size);
    if (settings.contains("position")) {
        gui.move(settings.value("position").toPoint());
    }
    settings.endGroup();
    
    gui.show();

    if (argc > 1) {
	QString path = argv[1];
        bool success = false;
        if (path.endsWith(".sv")) {
            success = gui.openSessionFile(path);
        }
        if (!success) {
            success = gui.openSomeFile(path);
        }
        if (!success) {
	    QMessageBox::critical(&gui, QMessageBox::tr("Failed to open file"),
				  QMessageBox::tr("File \"%1\" could not be opened").arg(path));
	}
    }

    int rv = application.exec();
    std::cerr << "application.exec() returned " << rv << std::endl;

    cleanupMutex.lock();
    TempDirectory::getInstance()->cleanup();
    application.releaseMainWindow();

    return rv;
}