Chris@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     Sonic Visualiser
Chris@0:     An audio file viewer and annotation editor.
Chris@0:     Centre for Digital Music, Queen Mary, University of London.
Chris@77:     This file copyright 2006 Chris Cannam and QMUL.
Chris@0:     
Chris@0:     This program is free software; you can redistribute it and/or
Chris@0:     modify it under the terms of the GNU General Public License as
Chris@0:     published by the Free Software Foundation; either version 2 of the
Chris@0:     License, or (at your option) any later version.  See the file
Chris@0:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "MainWindow.h"
Chris@0: 
Chris@1: #include "system/System.h"
Chris@1: #include "system/Init.h"
Chris@0: #include "base/TempDirectory.h"
Chris@0: #include "base/PropertyContainer.h"
Chris@0: #include "base/Preferences.h"
Chris@120: #include "widgets/TipDialog.h"
Chris@315: #include "transform/TransformFactory.h"
Chris@0: 
Chris@0: #include <QMetaType>
Chris@0: #include <QApplication>
Chris@0: #include <QDesktopWidget>
Chris@0: #include <QMessageBox>
Chris@0: #include <QTranslator>
Chris@0: #include <QLocale>
Chris@5: #include <QSettings>
Chris@7: #include <QIcon>
Chris@11: #include <QSessionManager>
Chris@165: #include <QDir>
Chris@231: #include <QSplashScreen>
Chris@252: #include <QTimer>
Chris@331: #include <QPainter>
dan@365: #include <QFileOpenEvent>
Chris@331: 
Chris@331: #include "../version.h"
Chris@0: 
Chris@0: #include <iostream>
Chris@0: #include <signal.h>
Chris@0: 
Chris@215: #ifdef HAVE_FFTW3F
Chris@215: #include <fftw3.h>
Chris@215: #endif
Chris@215: 
Chris@127: /*! \mainpage Sonic Visualiser
Chris@127: 
Chris@127: \section interesting Summary of interesting classes
Chris@127: 
Chris@127:  - Data models: Model and subclasses, e.g. WaveFileModel
Chris@127: 
Chris@127:  - Graphical layers: Layer and subclasses, displayed on View and its
Chris@127:  subclass widgets.
Chris@127: 
Chris@127:  - Main window class, document class, and file parser: MainWindow,
Chris@127:  Document, SVFileReader
Chris@127: 
Chris@127:  - Turning one model (e.g. audio) into another (e.g. more audio, or a
Chris@244:  curve extracted from it): Transform, encapsulating the data that need
Chris@244:  to be stored to be able to reproduce a given transformation;
Chris@244:  TransformFactory, for discovering the available types of transform;
Chris@244:  ModelTransformerFactory, ModelTransformer and subclasses, providing
Chris@244:  the mechanisms for applying transforms to data models
Chris@127: 
Chris@127:  - Creating the plugins used by transforms: RealTimePluginFactory,
Chris@129:  FeatureExtractionPluginFactory.  See also the API documentation for
Chris@129:  Vamp feature extraction plugins at
Chris@129:  http://www.vamp-plugins.org/code-doc/.
Chris@127: 
Chris@127:  - File reading and writing code: AudioFileReader and subclasses,
Chris@127:  WavFileWriter, DataFileReader, SVFileReader
Chris@127: 
Chris@127:  - FFT calculation and cacheing: FFTModel, FFTDataServer
Chris@127: 
Chris@127:  - Widgets that show groups of editable properties: PropertyBox for
Chris@127:  layer properties (contained in a PropertyStack), PluginParameterBox
Chris@127:  for plugins (contained in a PluginParameterDialog)
Chris@127: 
Chris@127:  - Audio playback: AudioCallbackPlaySource and subclasses,
Chris@127:  AudioCallbackPlayTarget and subclasses, AudioGenerator
Chris@127: 
Chris@127: \section model Data sources: the Model hierarchy
Chris@127: 
Chris@127:    A Model is something containing, or knowing how to obtain, data.
Chris@127: 
Chris@127:    For example, WaveFileModel is a model that knows how to get data
Chris@127:    from an audio file; SparseTimeValueModel is a model containing
Chris@127:    editable "curve" data.
Chris@127: 
Chris@127:    Models typically subclass one of a number of abstract subclasses of
Chris@127:    Model.  For example, WaveFileModel subclasses DenseTimeValueModel,
Chris@127:    which describes an interface for models that have a value at each
Chris@127:    time point for a given sampling resolution.  (Note that
Chris@127:    WaveFileModel does not actually read the files itself: it uses
Chris@127:    AudioFileReader classes for that.  It just makes data from the
Chris@127:    files available in a Model.)  SparseTimeValueModel uses the
Chris@127:    SparseModel template class, which provides most of the
Chris@127:    implementation for models that contain a series of points of some
Chris@127:    sort -- also used by NoteModel, TextModel, and
Chris@127:    SparseOneDimensionalModel.
Chris@127: 
Chris@127:    Everything that goes on the screen originates from a model, via a
Chris@127:    layer (see below).  The models are contained in a Document object.
Chris@127:    There is no containment hierarchy or ordering of models in the
Chris@127:    document.  One model is the main model, which defines the sample
Chris@127:    rate for playback.
Chris@127: 
Chris@127:    A model may also be marked as a "derived" model, which means it was
Chris@127:    generated from another model using some transform (feature
Chris@127:    extraction or effect plugin, etc) -- the idea being that they can
Chris@127:    be re-generated using the same transform if a new source model is
Chris@127:    loaded.
Chris@127: 
Chris@127: \section layer Things that can display data: the Layer hierarchy
Chris@127: 
Chris@127:    A Layer is something that knows how to draw parts of a model onto a
Chris@127:    timeline.
Chris@127: 
Chris@127:    For example, WaveformLayer is a layer which draws waveforms, based
Chris@127:    on WaveFileModel; TimeValueLayer draws curves, based on
Chris@127:    SparseTimeValueModel; SpectrogramLayer draws spectrograms, based on
Chris@127:    WaveFileModel (via FFTModel).
Chris@127: 
Chris@127:    The most basic functions of a layer are: to draw itself onto a
Chris@127:    Pane, against a timeline on the x axis; and to permit user
Chris@127:    interaction.  If you were thinking of adding the capability to
Chris@127:    display a new sort of something, then you would want to add a new
Chris@127:    layer type.  (You may also need a new model type, depending on
Chris@127:    whether any existing model can capture the data you need.)
Chris@127:    Depending on the sort of data in question, there are various
Chris@127:    existing layers that might be appropriate to start from -- for
Chris@127:    example, a layer that displays images that the user has imported
Chris@127:    and associated with particular times might have something in common
Chris@127:    with the existing TextLayer which displays pieces of text that are
Chris@127:    associated with particular times.
Chris@127: 
Chris@127:    Although layers are visual objects, they are contained in the
Chris@127:    Document in Sonic Visualiser rather than being managed together
Chris@127:    with display widgets.  The Sonic Visualiser file format has
Chris@127:    separate data and layout sections, and the layers are defined in
Chris@127:    the data section and then referred to in the layout section which
Chris@127:    determines which layers may go on which panes (see Pane below).
Chris@127: 
Chris@127:    Once a layer class is defined, some basic data about it needs to be
Chris@127:    set up in the LayerFactory class, and then it will appear in the
Chris@127:    menus and so on on the main window.
Chris@127: 
Chris@127: \section view Widgets that are used to show layers: The View hierarchy
Chris@127: 
Chris@127:    A View is a widget that displays a stack of layers.  The most
Chris@127:    important subclass is Pane, the widget that is used to show most of
Chris@127:    the data in the main window of Sonic Visualiser.
Chris@127: 
Chris@127:    All a pane really does is contain a set of layers and get them to
Chris@127:    render themselves (one on top of the other, with the topmost layer
Chris@127:    being the one that is currently interacted with), cache the
Chris@127:    results, negotiate user interaction with them, and so on.  This is
Chris@127:    generally fiddly, if not especially interesting.  Panes are
Chris@127:    strictly layout objects and are not stored in the Document class;
Chris@127:    instead the MainWindow contains a PaneStack widget (the widget that
Chris@127:    takes up most of Sonic Visualiser's main window) which contains a
Chris@127:    set of panes stacked vertically.
Chris@127: 
Chris@127:    Another View subclass is Overview, which is the widget that
Chris@127:    contains that green waveform showing the entire file at the bottom
Chris@127:    of the window.
Chris@127: 
Chris@127: */
Chris@127: 
Chris@0: static QMutex cleanupMutex;
Chris@589: static bool cleanedUp = false;
Chris@0: 
Chris@0: static void
Chris@0: signalHandler(int /* signal */)
Chris@0: {
Chris@0:     // Avoid this happening more than once across threads
Chris@0: 
Chris@589:     std::cerr << "signalHandler: cleaning up and exiting" << std::endl;
Chris@0:     cleanupMutex.lock();
Chris@589:     if (!cleanedUp) {
Chris@589:         TempDirectory::getInstance()->cleanup();
Chris@589:         cleanedUp = true;
Chris@589:     }
Chris@589:     cleanupMutex.unlock();
Chris@589:     exit(0);
Chris@0: }
Chris@0: 
Chris@11: class SVApplication : public QApplication
Chris@11: {
Chris@11: public:
Chris@296:     SVApplication(int &argc, char **argv) :
Chris@11:         QApplication(argc, argv),
dan@365:         m_readyForFiles(false),
dan@365:         m_filepathQueue(QStringList()),
dan@365:         m_mainWindow(0)
Chris@509:     {
Chris@509: #ifdef Q_OS_MAC
Chris@509:         // Override the Qt plugin load path. The default contains the
Chris@509:         // Qt installation location as well as the application
Chris@509:         // directory, but we don't ever want to load plugins from
Chris@509:         // outside the app bundle because we don't know for sure what
Chris@509:         // (potentially different) versions of the Qt framework
Chris@509:         // libraries they may have dyld dependencies on.
Chris@509:         QString apploc(applicationFilePath());
Chris@509:         apploc.truncate(apploc.lastIndexOf(QLatin1Char('/')));
Chris@509:         apploc = QDir(apploc).canonicalPath();
Chris@509:         if (QFile::exists(apploc)) {
Chris@509:             setLibraryPaths(QStringList() << apploc);
Chris@509:         } else {
Chris@509:             setLibraryPaths(QStringList());
Chris@509:         }
Chris@509: #endif
Chris@509:     }
Chris@11:     virtual ~SVApplication() { }
Chris@11: 
Chris@11:     void setMainWindow(MainWindow *mw) { m_mainWindow = mw; }
Chris@11:     void releaseMainWindow() { m_mainWindow = 0; }
Chris@11: 
Chris@11:     virtual void commitData(QSessionManager &manager) {
Chris@11:         if (!m_mainWindow) return;
Chris@11:         bool mayAskUser = manager.allowsInteraction();
Chris@11:         bool success = m_mainWindow->commitData(mayAskUser);
Chris@11:         manager.release();
Chris@11:         if (!success) manager.cancel();
Chris@11:     }
Chris@11: 
dan@365:     void handleFilepathArgument(QString path, QSplashScreen *splash);
dan@362: 
dan@365:     bool m_readyForFiles;
dan@365:     QStringList m_filepathQueue;
dan@362: 
Chris@11: protected:
Chris@11:     MainWindow *m_mainWindow;
dan@365:     bool event(QEvent *);
dan@365: 
Chris@11: };
Chris@11: 
Chris@0: int
Chris@0: main(int argc, char **argv)
Chris@0: {
Chris@376:     svSystemSpecificInitialisation();
Chris@376: 
Chris@316: #ifdef Q_WS_X11
Chris@317: #if QT_VERSION >= 0x040500
Chris@342: //    QApplication::setGraphicsSystem("raster");
Chris@316: #endif
Chris@316: #endif
Chris@316: 
Chris@11:     SVApplication application(argc, argv);
Chris@0: 
Chris@46:     QStringList args = application.arguments();
Chris@46: 
Chris@0:     signal(SIGINT,  signalHandler);
Chris@0:     signal(SIGTERM, signalHandler);
Chris@0: 
chris@598: #ifndef Q_OS_WIN32
Chris@607: //???    signal(SIGHUP,  signalHandler);
Chris@607: //???    signal(SIGQUIT, signalHandler);
Chris@0: #endif
Chris@0: 
Chris@46:     bool audioOutput = true;
Chris@70:     bool oscSupport = true;
Chris@70: 
Chris@133:     if (args.contains("--help") || args.contains("-h") || args.contains("-?")) {
Chris@70:         std::cerr << QApplication::tr(
Chris@432:             "\nSonic Visualiser is a program for viewing and exploring audio data\nfor semantic music analysis and annotation.\n\nUsage:\n\n  %1 [--no-audio] [--no-osc] [<file> ...]\n\n  --no-audio: Do not attempt to open an audio output device\n  --no-osc: Do not provide an Open Sound Control port for remote control\n  <file>: One or more Sonic Visualiser (.sv) and audio files may be provided.\n").arg(argv[0]) << std::endl;
Chris@70:         exit(2);
Chris@70:     }
Chris@70: 
Chris@46:     if (args.contains("--no-audio")) audioOutput = false;
Chris@70:     if (args.contains("--no-osc")) oscSupport = false;
Chris@46: 
Chris@6:     QApplication::setOrganizationName("sonic-visualiser");
Chris@5:     QApplication::setOrganizationDomain("sonicvisualiser.org");
Chris@213:     QApplication::setApplicationName(QApplication::tr("Sonic Visualiser"));
Chris@141: 
Chris@283:     QSplashScreen *splash = 0;
Chris@231: 
Chris@231:     QSettings settings;
Chris@237: 
Chris@237:     settings.beginGroup("Preferences");
Chris@237:     if (settings.value("show-splash", true).toBool()) {
Chris@331:         QPixmap pixmap(":/icons/sv-splash.png");
Chris@331:         QPainter painter;
Chris@331:         painter.begin(&pixmap);
Chris@331:         QString text = QString("v%1").arg(SV_VERSION);
Chris@331:         painter.drawText
Chris@331:             (pixmap.width() - painter.fontMetrics().width(text) - 10,
Chris@331:              10 + painter.fontMetrics().ascent(),
Chris@331:              text);
Chris@331:         painter.end();
Chris@283:         splash = new QSplashScreen(pixmap);
Chris@283:         splash->show();
Chris@283:         QTimer::singleShot(5000, splash, SLOT(hide()));
Chris@231:         application.processEvents();
Chris@231:     }
Chris@237:     settings.endGroup();
Chris@231: 
Chris@278:     settings.beginGroup("RDF");
Chris@278:     if (!settings.contains("rdf-indices")) {
Chris@278:         QStringList list;
Chris@278:         list << "http://www.vamp-plugins.org/rdf/plugins/index.txt";
Chris@278:         settings.setValue("rdf-indices", list);
Chris@278:     }
Chris@278:     settings.endGroup();
Chris@278: 
Chris@141:     QIcon icon;
Chris@141:     int sizes[] = { 16, 22, 24, 32, 48, 64, 128 };
Chris@141:     for (int i = 0; i < sizeof(sizes)/sizeof(sizes[0]); ++i) {
Chris@141:         icon.addFile(QString(":icons/sv-%1x%2.png").arg(sizes[i]).arg(sizes[i]));
Chris@141:     }
Chris@141:     QApplication::setWindowIcon(icon);
Chris@7: 
Chris@0:     QString language = QLocale::system().name();
Chris@0: 
Chris@0:     QTranslator qtTranslator;
Chris@0:     QString qtTrName = QString("qt_%1").arg(language);
Chris@438:     SVDEBUG << "Loading " << qtTrName << "... ";
Chris@165:     bool success = false;
Chris@165:     if (!(success = qtTranslator.load(qtTrName))) {
Chris@165:         QString qtDir = getenv("QTDIR");
Chris@165:         if (qtDir != "") {
Chris@165:             success = qtTranslator.load
Chris@165:                 (qtTrName, QDir(qtDir).filePath("translations"));
Chris@165:         }
Chris@165:     }
Chris@165:     if (!success) {
Chris@438:         SVDEBUG << "Failed\nFailed to load Qt translation for locale" << endl;
Chris@253:     } else {
Chris@253:         std::cerr << "Done" << std::endl;
Chris@165:     }
Chris@0:     application.installTranslator(&qtTranslator);
Chris@0: 
Chris@0:     QTranslator svTranslator;
Chris@0:     QString svTrName = QString("sonic-visualiser_%1").arg(language);
Chris@438:     SVDEBUG << "Loading " << svTrName << "... ";
Chris@0:     svTranslator.load(svTrName, ":i18n");
Chris@438:     SVDEBUG << "Done" << endl;
Chris@0:     application.installTranslator(&svTranslator);
Chris@0: 
Chris@187:     StoreStartupLocale();
Chris@187: 
Chris@0:     // Permit size_t and PropertyName to be used as args in queued signal calls
Chris@0:     qRegisterMetaType<size_t>("size_t");
Chris@0:     qRegisterMetaType<PropertyContainer::PropertyName>("PropertyContainer::PropertyName");
Chris@0: 
dan@365:     MainWindow *gui = new MainWindow(audioOutput, oscSupport);
Chris@222:     application.setMainWindow(gui);
Chris@283:     if (splash) {
Chris@283:         QObject::connect(gui, SIGNAL(hideSplash()), splash, SLOT(hide()));
Chris@283:     }
Chris@0: 
Chris@0:     QDesktopWidget *desktop = QApplication::desktop();
Chris@0:     QRect available = desktop->availableGeometry();
Chris@0: 
Chris@378:     int width = (available.width() * 2) / 3;
Chris@0:     int height = available.height() / 2;
Chris@378:     if (height < 450) height = (available.height() * 2) / 3;
Chris@0:     if (width > height * 2) width = height * 2;
Chris@0: 
Chris@237:     settings.beginGroup("MainWindow");
Chris@5:     QSize size = settings.value("size", QSize(width, height)).toSize();
Chris@319:     gui->resizeConstrained(size);
Chris@5:     if (settings.contains("position")) {
Chris@297:         QRect prevrect(settings.value("position").toPoint(), size);
Chris@297:         if (!(available & prevrect).isEmpty()) {
Chris@297:             gui->move(prevrect.topLeft());
Chris@297:         }
Chris@5:     }
Chris@5:     settings.endGroup();
Chris@5:     
Chris@222:     gui->show();
Chris@64: 
Chris@118:     // The MainWindow class seems to have trouble dealing with this if
Chris@118:     // it tries to adapt to this preference before the constructor is
Chris@118:     // complete.  As a lazy hack, apply it explicitly from here
Chris@222:     gui->preferenceChanged("Property Box Layout");
Chris@118: 
dan@365:     application.m_readyForFiles = true; // Ready to receive files from e.g. Apple Events
dan@365: 
Chris@54:     for (QStringList::iterator i = args.begin(); i != args.end(); ++i) {
Chris@54: 
Chris@54:         if (i == args.begin()) continue;
Chris@54:         if (i->startsWith('-')) continue;
Chris@54: 
Chris@54:         QString path = *i;
Chris@54: 
dan@365:         application.handleFilepathArgument(path, splash);
dan@365:     }
dan@365:     
dan@365:     for (QStringList::iterator i = application.m_filepathQueue.begin(); i != application.m_filepathQueue.end(); ++i) {
dan@365:         QString path = *i;
dan@365:         application.handleFilepathArgument(path, splash);
Chris@180:     }
Chris@180:     
Chris@215: #ifdef HAVE_FFTW3F
Chris@215:     settings.beginGroup("FFTWisdom");
Chris@215:     QString wisdom = settings.value("wisdom").toString();
Chris@215:     if (wisdom != "") {
Chris@215:         fftwf_import_wisdom_from_string(wisdom.toLocal8Bit().data());
Chris@215:     }
Chris@267: #ifdef HAVE_FFTW3
Chris@267:     wisdom = settings.value("wisdom_d").toString();
Chris@267:     if (wisdom != "") {
Chris@267:         fftw_import_wisdom_from_string(wisdom.toLocal8Bit().data());
Chris@267:     }
Chris@267: #endif
Chris@215:     settings.endGroup();
Chris@215: #endif
Chris@180: 
Chris@283:     if (splash) splash->finish(gui);
Chris@283:     delete splash;
Chris@180: 
Chris@123: /*
Chris@120:     TipDialog tipDialog;
Chris@120:     if (tipDialog.isOK()) {
Chris@120:         tipDialog.exec();
Chris@120:     }
Chris@123: */
Chris@0:     int rv = application.exec();
Chris@0: 
Chris@298:     gui->hide();
Chris@298: 
Chris@0:     cleanupMutex.lock();
Chris@332: 
Chris@589:     if (!cleanedUp) {
Chris@589:         TransformFactory::deleteInstance();
Chris@589:         TempDirectory::getInstance()->cleanup();
Chris@589:         cleanedUp = true;
Chris@589:     }
Chris@589: 
Chris@11:     application.releaseMainWindow();
Chris@5: 
Chris@215: #ifdef HAVE_FFTW3F
Chris@267:     settings.beginGroup("FFTWisdom");
Chris@215:     char *cwisdom = fftwf_export_wisdom_to_string();
Chris@215:     if (cwisdom) {
Chris@215:         settings.setValue("wisdom", cwisdom);
Chris@332:         free(cwisdom);
Chris@215:     }
Chris@267: #ifdef HAVE_FFTW3
Chris@267:     cwisdom = fftw_export_wisdom_to_string();
Chris@267:     if (cwisdom) {
Chris@267:         settings.setValue("wisdom_d", cwisdom);
Chris@332:         free(cwisdom);
Chris@267:     }
Chris@267: #endif
Chris@267:     settings.endGroup();
Chris@215: #endif
Chris@215: 
Chris@222:     delete gui;
Chris@222: 
Chris@573:     cleanupMutex.unlock();
Chris@573: 
Chris@0:     return rv;
Chris@0: }
dan@365: 
dan@365: bool SVApplication::event(QEvent *event){
dan@365:     QString thePath;
dan@365:     switch (event->type()) {
dan@365:     case QEvent::FileOpen:
dan@365:         thePath = static_cast<QFileOpenEvent *>(event)->file();
dan@365:         if(m_readyForFiles)
dan@365:             handleFilepathArgument(thePath, NULL);
dan@365:         else
dan@365:             m_filepathQueue.append(thePath);
dan@365:         return true;
dan@365:     default:
dan@365:         return QApplication::event(event);
dan@365:     }
dan@365: }
dan@365: 
dan@365: /** Application-global handler for filepaths passed in, e.g. as command-line arguments or apple events */
dan@365: void SVApplication::handleFilepathArgument(QString path, QSplashScreen *splash){
dan@365:     static bool haveSession = false;
dan@365:     static bool haveMainModel = false;
dan@365:     static bool havePriorCommandLineModel = false;
dan@365: 
dan@365:     MainWindow::FileOpenStatus status = MainWindow::FileOpenFailed;
dan@365: 
Chris@603: #ifdef Q_OS_WIN32
Chris@603:     path.replace("\\", "/");
Chris@603: #endif
Chris@603: 
dan@365:     if (path.endsWith("sv")) {
dan@365:         if (!haveSession) {
dan@365:             status = m_mainWindow->openSessionFile(path);
dan@365:             if (status == MainWindow::FileOpenSucceeded) {
dan@365:                 haveSession = true;
dan@365:                 haveMainModel = true;
dan@365:             }
dan@365:         } else {
Chris@432:             std::cerr << "WARNING: Ignoring additional session file argument \"" << path << "\"" << std::endl;
dan@365:             status = MainWindow::FileOpenSucceeded;
dan@365:         }
dan@365:     }
dan@365:     if (status != MainWindow::FileOpenSucceeded) {
dan@365:         if (!haveMainModel) {
Chris@417:             status = m_mainWindow->open(path, MainWindow::ReplaceSession);
dan@365:             if (status == MainWindow::FileOpenSucceeded) {
dan@365:                 haveMainModel = true;
dan@365:             }
dan@365:         } else {
dan@365:             if (haveSession && !havePriorCommandLineModel) {
dan@365:                 status = m_mainWindow->open(path, MainWindow::AskUser);
dan@365:                 if (status == MainWindow::FileOpenSucceeded) {
dan@365:                     havePriorCommandLineModel = true;
dan@365:                 }
dan@365:             } else {
dan@365:                 status = m_mainWindow->open(path, MainWindow::CreateAdditionalModel);
dan@365:             }
dan@365:         }
dan@365:     }
dan@365:     if (status == MainWindow::FileOpenFailed) {
dan@365:         if (splash) splash->hide();
dan@365:         QMessageBox::critical
dan@365:             (m_mainWindow, QMessageBox::tr("Failed to open file"),
dan@365:              QMessageBox::tr("File or URL \"%1\" could not be opened").arg(path));
dan@365:     } else if (status == MainWindow::FileOpenWrongMode) {
dan@365:         if (splash) splash->hide();
dan@365:         QMessageBox::critical
dan@365:             (m_mainWindow, QMessageBox::tr("Failed to open file"),
dan@365:              QMessageBox::tr("<b>Audio required</b><p>Please load at least one audio file before importing annotation data"));
dan@365:     }
dan@365: }