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/***************************************************************************
SelectRangePlugin.cpp - Plugin for selecting a range of samples
-------------------
begin : Sat Jun 15 2002
copyright : (C) 2002 by Thomas Eschenbacher
email : Thomas.Eschenbacher@gmx.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "config.h"
#include <errno.h>
#include <math.h>
#include <new>
#include <KLocalizedString>
#include <QString>
#include "libkwave/Plugin.h"
#include "libkwave/PluginManager.h"
#include "libkwave/SignalManager.h"
#include "libkwave/String.h"
#include "libkwave/undo/UndoTransactionGuard.h"
#include "SelectRangeDialog.h"
#include "SelectRangePlugin.h"
KWAVE_PLUGIN(selectrange, SelectRangePlugin)
//***************************************************************************
Kwave::SelectRangePlugin::SelectRangePlugin(QObject *parent,
const QVariantList &args)
:Kwave::Plugin(parent, args),
m_start_mode(Kwave::SelectTimeWidget::bySamples),
m_range_mode(Kwave::SelectTimeWidget::bySamples),
m_start(0), m_range(0)
{
}
//***************************************************************************
Kwave::SelectRangePlugin::~SelectRangePlugin()
{
}
//***************************************************************************
QStringList *Kwave::SelectRangePlugin::setup(QStringList &previous_params)
{
// try to interpret the previous parameters
interpreteParameters(previous_params);
// create the setup dialog
double rate = signalRate();
sample_index_t offset = manager().selectionStart();
sample_index_t length = signalLength();
QPointer<Kwave::SelectRangeDialog> dialog =
new(std::nothrow) Kwave::SelectRangeDialog(parentWidget(),
m_start_mode, m_range_mode, m_range, rate, offset, length);
Q_ASSERT(dialog);
if (!dialog) return nullptr;
QStringList *list = new(std::nothrow) QStringList();
Q_ASSERT(list);
if (list && dialog->exec() && dialog) {
// user has pressed "OK"
*list << QString::number(dialog->startMode());
*list << QString::number(dialog->rangeMode());
*list << QString::number(dialog->start());
*list << QString::number(dialog->range());
emitCommand(_("plugin:execute(selectrange,") +
QString::number(dialog->startMode()) + _(",") +
QString::number(dialog->rangeMode()) + _(",") +
QString::number(dialog->start()) + _(",") +
QString::number(dialog->range())+
_(")")
);
} else {
// user pressed "Cancel"
delete list;
list = nullptr;
}
delete dialog;
return list;
}
//***************************************************************************
int Kwave::SelectRangePlugin::start(QStringList ¶ms)
{
// interprete the parameters
int result = interpreteParameters(params);
if (result) return result;
const sample_index_t signal_length = signalLength();
// get current offset of the signal
sample_index_t offset = Kwave::SelectTimeWidget::timeToSamples(
m_start_mode, m_start, signalRate(), signal_length);
// transform into offset and length [samples]
sample_index_t length = Kwave::SelectTimeWidget::timeToSamples(
m_range_mode, m_range, signalRate(), signal_length);
// limit selection to end of signal
if (length > signal_length)
length = signal_length;
if ((offset + length) >= signal_length)
length = signal_length - offset;
// change the selection through the signal manager
{
Kwave::UndoTransactionGuard undo_guard(*this, i18n("Select Range"));
selectRange(offset, length);
}
return result;
}
//***************************************************************************
int Kwave::SelectRangePlugin::interpreteParameters(QStringList ¶ms)
{
bool ok;
QString param;
int mode;
// evaluate the parameter list
if (params.count() != 4) {
return -EINVAL;
}
// selection mode for start
param = params[0];
mode = param.toInt(&ok);
Q_ASSERT(ok);
if (!ok) return -EINVAL;
Q_ASSERT(
(mode == static_cast<int>(Kwave::SelectTimeWidget::byTime)) ||
(mode == static_cast<int>(Kwave::SelectTimeWidget::bySamples)) ||
(mode == static_cast<int>(Kwave::SelectTimeWidget::byPercents))
);
if ((mode != static_cast<int>(Kwave::SelectTimeWidget::byTime)) &&
(mode != static_cast<int>(Kwave::SelectTimeWidget::bySamples)) &&
(mode != static_cast<int>(Kwave::SelectTimeWidget::byPercents)))
{
return -EINVAL;
}
m_start_mode = static_cast<Kwave::SelectTimeWidget::Mode>(mode);
// selection mode
param = params[1];
mode = param.toInt(&ok);
Q_ASSERT(ok);
if (!ok) return -EINVAL;
Q_ASSERT(
(mode == static_cast<int>(Kwave::SelectTimeWidget::byTime)) ||
(mode == static_cast<int>(Kwave::SelectTimeWidget::bySamples)) ||
(mode == static_cast<int>(Kwave::SelectTimeWidget::byPercents))
);
if ((mode != static_cast<int>(Kwave::SelectTimeWidget::byTime)) &&
(mode != static_cast<int>(Kwave::SelectTimeWidget::bySamples)) &&
(mode != static_cast<int>(Kwave::SelectTimeWidget::byPercents)))
{
return -EINVAL;
}
m_range_mode = static_cast<Kwave::SelectTimeWidget::Mode>(mode);
// offset in ms, samples or percent
param = params[2];
m_start = param.toUInt(&ok);
if (!ok) return -EINVAL;
// range in ms, samples or percent
param = params[3];
m_range = param.toUInt(&ok);
if (!ok) return -EINVAL;
return 0;
}
//***************************************************************************
#include "SelectRangePlugin.moc"
//***************************************************************************
//***************************************************************************
#include "moc_SelectRangePlugin.cpp"
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