Kwave::FileInfoPlugin Class Reference

#include <FileInfoPlugin.h>

Inheritance diagram for Kwave::FileInfoPlugin:

Collaboration diagram for Kwave::FileInfoPlugin:

Public Member Functions
	FileInfoPlugin (QObject *parent, const QVariantList &args)
virtual	~FileInfoPlugin () Q_DECL_OVERRIDE
virtual QStringList *	setup (QStringList &) Q_DECL_OVERRIDE
Public Member Functions inherited from Kwave::Plugin
	Plugin (QObject *parent, const QVariantList &args)
virtual	~Plugin () Q_DECL_OVERRIDE
virtual QString	name () const
virtual QString	description () const
virtual QString	progressText ()
virtual bool	canClose () const
bool	isRunning () const
bool	shouldStop () const
virtual void	load (QStringList &params)
virtual void	unload ()
virtual int	start (QStringList &params)
virtual int	stop ()
virtual void	run (QStringList params)
Kwave::PluginManager &	manager () const
Kwave::SignalManager &	signalManager ()
QWidget *	parentWidget () const
QString	signalName ()
virtual sample_index_t	signalLength ()
virtual double	signalRate ()
virtual const QList< unsigned int >	selectedTracks ()
virtual sample_index_t	selection (QList< unsigned int > *tracks=Q_NULLPTR, sample_index_t *left=Q_NULLPTR, sample_index_t *right=Q_NULLPTR, bool expand_if_empty=false)
virtual void	selectRange (sample_index_t offset, sample_index_t length)
virtual void	migrateToActiveContext ()
Public Member Functions inherited from Kwave::Runnable
virtual	~Runnable ()

Protected Member Functions
void	apply (Kwave::FileInfo &new_info)
Protected Member Functions inherited from Kwave::Plugin
int	execute (QStringList &params)
void	emitCommand (const QString &command)
void	use ()
void	setPluginManager (Kwave::PluginManager *new_plugin_manager)
virtual void	run_wrapper (const QVariant &params) Q_DECL_OVERRIDE

Additional Inherited Members
Public Slots inherited from Kwave::Plugin
virtual void	setProgressDialogEnabled (bool enable)
virtual void	updateProgress (qreal progress)
virtual void	cancel ()
virtual void	close ()
void	release ()
Signals inherited from Kwave::Plugin
void	sigRunning (Kwave::Plugin *plugin)
void	sigDone (Kwave::Plugin *plugin)
void	sigClosed (Kwave::Plugin *p)
void	sigCommand (const QString &command)
void	setProgressText (const QString &text)

Detailed Description

Definition at line 27 of file FileInfoPlugin.h.

Constructor & Destructor Documentation

FileInfoPlugin()

Kwave::FileInfoPlugin::FileInfoPlugin	(	QObject *	parent,
		const QVariantList &	args
	)

Constructor

Parameters

parent	reference to our plugin manager
args	argument list [unused]

Definition at line 32 of file FileInfoPlugin.cpp.

    :Kwave::Plugin(parent, args)
{
}

~FileInfoPlugin()

Kwave::FileInfoPlugin::~FileInfoPlugin ( )

virtual

virtual Destructor

Definition at line 39 of file FileInfoPlugin.cpp.

{
}

Member Function Documentation

apply()

void Kwave::FileInfoPlugin::apply ( Kwave::FileInfo &  new_info )

protected

Applies the new settings

Definition at line 70 of file FileInfoPlugin.cpp.

References _, Kwave::Plugin::emitCommand(), Kwave::Plugin::parentWidget(), Kwave::MessageBox::questionYesNoCancel(), Kwave::FileInfo::rate(), Kwave::SignalManager::setFileInfo(), Kwave::FileInfo::setRate(), and Kwave::Plugin::signalManager().

Referenced by setup().

{
    Kwave::FileInfo old_info(signalManager().metaData());
    if (old_info == new_info) return; // nothing to do

    /* sample rate */
    if (!qFuzzyCompare(old_info.rate(), new_info.rate())) {

        // sample rate changed -> only change rate or resample ?
        double new_rate = new_info.rate();
        int res = Kwave::MessageBox::questionYesNoCancel(parentWidget(),
            i18n("You have changed the sample rate. Do you want to convert "
                 "the whole file to the new sample rate or do "
                 "you only want to set the rate information in order "
                 "to repair a damaged file? Note: changing only the sample "
                 "rate can cause \"mickey mouse\" effects."),
            QString(),
            i18n("&Convert"),
            i18n("&Set Rate"));
        if (res == KMessageBox::Yes) {
            // Yes -> resample

            // take over all properties except the new sample rate, this will
            // be detected and changed in the sample rate plugin
            new_info.setRate(old_info.rate());
            if (new_info != old_info) {
                signalManager().setFileInfo(new_info, true);
            } // else: nothing except sample rate changed

            // NOTE: this command could be executed asynchronously, thus
            //       we cannot change the sample rate afterwards
            emitCommand(_("plugin:execute(samplerate,%1,all)").arg(new_rate));
            return;
        } else if (res == KMessageBox::No) {
            // No -> only change the rate in the file info
            new_info.setRate(new_rate);
        } else {
            // canceled -> use old sample rate
            new_info.setRate(old_info.rate());
        }
    }

    // just copy all other properties
    if (new_info != old_info) {
        signalManager().setFileInfo(new_info, true);
    }
}

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setup()

QStringList * Kwave::FileInfoPlugin::setup ( QStringList &  )

virtual

Shows a dialog for editing file properties.

See also

Kwave::Plugin::setup

Reimplemented from Kwave::Plugin.

Definition at line 44 of file FileInfoPlugin.cpp.

References apply(), Kwave::FileInfoDialog::info(), Kwave::Plugin::parentWidget(), and Kwave::Plugin::signalManager().

{
    Kwave::FileInfo oldInfo(signalManager().metaData());

    // create the setup dialog
    Kwave::FileInfoDialog *dialog =
        new Kwave::FileInfoDialog(parentWidget(), oldInfo);
    Q_ASSERT(dialog);
    if (!dialog) return Q_NULLPTR;

    QStringList *list = new QStringList();
    Q_ASSERT(list);
    if (list && dialog->exec()) {
        // user has pressed "OK" -> apply the new properties
        apply(dialog->info());
    } else {
        // user pressed "Cancel"
        if (list) delete list;
        list = Q_NULLPTR;
    }

    if (dialog) delete dialog;
    return list;
}

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The documentation for this class was generated from the following files:

• plugins/fileinfo/FileInfoPlugin.h
• plugins/fileinfo/FileInfoPlugin.cpp