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/***************************************************************************
SonagramDialog.cpp - dialog for setting up the sonagram window
-------------------
begin : Fri Jul 28 2000
copyright : (C) 2000 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 <math.h>
#include <stdlib.h>
#include <QButtonGroup>
#include <QCheckBox>
#include <QLabel>
#include <QLayout>
#include <QPushButton>
#include <QRadioButton>
#include <QSlider>
#include <QString>
#include <QStringList>
#include <KComboBox>
#include <KHelpClient>
#include <KLocalizedString>
#include "libkwave/Plugin.h"
#include "libkwave/String.h"
#include "libkwave/Utils.h"
#include "libkwave/WindowFunction.h"
#include "SonagramDialog.h"
//***************************************************************************
Kwave::SonagramDialog::SonagramDialog(Kwave::Plugin &p)
:QDialog(p.parentWidget()), Ui::SonagramDlg(),
m_length(p.selection(nullptr, nullptr, nullptr, true)),
m_rate(p.signalRate())
{
setupUi(this);
setModal(true);
Q_ASSERT(pointbox);
Q_ASSERT(pointslider);
Q_ASSERT(windowtypebox);
if (!pointbox) return;
if (!pointslider) return;
if (!windowtypebox) return;
pointslider->setMaximum(Kwave::toInt(m_length / 16));
Kwave::window_function_t wf = Kwave::WINDOW_FUNC_NONE;
for (unsigned int i = 0; i < Kwave::WindowFunction::count(); i++) {
windowtypebox->addItem(Kwave::WindowFunction::description(wf, true));
++wf;
}
setPoints(1); // must set the minimum number of points to get
setBoxPoints(0); // the largest windowlabel
// Set a size hint:
// try to make the image's aspect ratio (a) = sqrt(2)
//
// samples: s
// fft_points: np
// image_width: w = s / np
// image_height: h = np / 2
// a = w / h = 2*s / (np^2)
// => np = sqrt( 2 * s / a) )
const double aspect_ratio = sqrt(2);
double np = sqrt(2.0 * static_cast<double>(m_length) / aspect_ratio);
// round down to an exponent of 2, this makes the image more
// wide than heigh and gives a fast calculation
int bits = Kwave::toInt(floor(log(np) / log(2)));
if (bits < 2) bits = 2;
if (bits > 16) bits = 16;
setPoints(1 << (bits-1));
setBoxPoints(0);
connect(
buttonBox->button(QDialogButtonBox::Help), SIGNAL(clicked()),
this, SLOT(invokeHelp())
);
connect(pointslider, SIGNAL(valueChanged(int)), SLOT(setPoints(int)));
connect(pointbox, SIGNAL(activated(int)), SLOT(setBoxPoints(int)));
// set the focus onto the "OK" button
buttonBox->button(QDialogButtonBox::Ok)->setFocus();
}
//***************************************************************************
void Kwave::SonagramDialog::parameters(QStringList &list)
{
Q_ASSERT(pointbox);
Q_ASSERT(windowtypebox);
Q_ASSERT(rbColor);
QString param;
list.clear();
// parameter #0: number of fft points
param = pointbox ? pointbox->currentText() : QString();
list.append(param);
// parameter #1: index of the window function
Kwave::window_function_t wf = Kwave::WindowFunction::findFromIndex(
(windowtypebox) ? windowtypebox->currentIndex() : 0);
param = Kwave::WindowFunction::name(wf);
list.append(param);
// parameter #2: flag: use color instead of greyscale
param.setNum(rbColor ? (rbColor->isChecked() ? 1 : 0) : 0);
list.append(param);
// parameter #3: flag: track changes
param.setNum((cbTrackChanges && cbTrackChanges->isChecked())
? 1 : 0);
list.append(param);
// parameter #4: flag: follow selection
param.setNum((cbFollowSelection && cbFollowSelection->isChecked())
? 1 : 0);
list.append(param);
}
//***************************************************************************
void Kwave::SonagramDialog::setPoints(int points)
{
Q_ASSERT(points >= 0);
QString text;
points *= 2;
text.setNum(points);
pointbox->setEditText(text);
windowlabel->setText(i18n("(resulting window size: %1)",
Kwave::ms2string(points * 1.0E3 / m_rate)));
bitmaplabel->setText(i18n("Size of bitmap: %1x%2",
(m_length / points) + 1,
points/2));
}
//***************************************************************************
void Kwave::SonagramDialog::setWindowFunction(Kwave::window_function_t type)
{
Q_ASSERT(windowtypebox);
if (!windowtypebox) return;
windowtypebox->setCurrentIndex(Kwave::WindowFunction::index(type));
}
//***************************************************************************
void Kwave::SonagramDialog::setColorMode(int color)
{
Q_ASSERT(rbColor);
if (!rbColor) return;
rbColor->setChecked(color);
rbGreyScale->setChecked(!color);
}
//***************************************************************************
void Kwave::SonagramDialog::setTrackChanges(bool track_changes)
{
Q_ASSERT(cbTrackChanges);
if (!cbTrackChanges) return;
cbTrackChanges->setChecked(track_changes);
}
//***************************************************************************
void Kwave::SonagramDialog::setFollowSelection(bool follow_selection)
{
Q_ASSERT(cbFollowSelection);
if (!cbFollowSelection) return;
cbFollowSelection->setChecked(follow_selection);
}
//***************************************************************************
void Kwave::SonagramDialog::setBoxPoints(int num)
{
Q_ASSERT(num >= 0);
int points = pointbox->itemText(num).toInt();
pointslider->setValue(points / 2);
}
//***************************************************************************
Kwave::SonagramDialog::~SonagramDialog ()
{
}
//***************************************************************************
void Kwave::SonagramDialog::invokeHelp()
{
KHelpClient::invokeHelp(_("plugin_sect_sonagram"));
}
//***************************************************************************
//***************************************************************************
#include "moc_SonagramDialog.cpp"
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