view main/PreferencesDialog.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 "PreferencesDialog.h"

#include <QGridLayout>
#include <QComboBox>
#include <QCheckBox>
#include <QGroupBox>
#include <QDoubleSpinBox>
#include <QLabel>
#include <QPushButton>
#include <QHBoxLayout>
#include <QString>

#include <fftw3.h>

#include "widgets/WindowTypeSelector.h"
#include "base/Preferences.h"

PreferencesDialog::PreferencesDialog(QWidget *parent, Qt::WFlags flags) :
    QDialog(parent, flags)
{
    setWindowTitle(tr("Application Preferences"));

    Preferences *prefs = Preferences::getInstance();

    QGridLayout *grid = new QGridLayout;
    setLayout(grid);
    
    QGroupBox *groupBox = new QGroupBox;
    groupBox->setTitle(tr("Sonic Visualiser Application Preferences"));
    grid->addWidget(groupBox, 0, 0);
    
    QGridLayout *subgrid = new QGridLayout;
    groupBox->setLayout(subgrid);

    // Create this first, as slots that get called from the ctor will
    // refer to it
    m_applyButton = new QPushButton(tr("Apply"));

    int min, max, i;

    m_windowType = WindowType(prefs->getPropertyRangeAndValue
                              ("Window Type", &min, &max));
    m_windowTypeSelector = new WindowTypeSelector(m_windowType);

    connect(m_windowTypeSelector, SIGNAL(windowTypeChanged(WindowType)),
            this, SLOT(windowTypeChanged(WindowType)));

    QCheckBox *smoothing = new QCheckBox;
    m_smoothSpectrogram = prefs->getSmoothSpectrogram();
    smoothing->setCheckState(m_smoothSpectrogram ?
                             Qt::Checked : Qt::Unchecked);

    connect(smoothing, SIGNAL(stateChanged(int)),
            this, SLOT(smoothSpectrogramChanged(int)));

    QComboBox *propertyLayout = new QComboBox;
    int pl = prefs->getPropertyRangeAndValue("Property Box Layout", &min, &max);
    m_propertyLayout = pl;

    for (i = min; i <= max; ++i) {
        propertyLayout->addItem(prefs->getPropertyValueLabel("Property Box Layout", i));
    }

    propertyLayout->setCurrentIndex(pl);

    connect(propertyLayout, SIGNAL(currentIndexChanged(int)),
            this, SLOT(propertyLayoutChanged(int)));

    m_tuningFrequency = prefs->getTuningFrequency();

    QDoubleSpinBox *frequency = new QDoubleSpinBox;
    frequency->setMinimum(100.0);
    frequency->setMaximum(5000.0);
    frequency->setSuffix(" Hz");
    frequency->setSingleStep(1);
    frequency->setValue(m_tuningFrequency);
    frequency->setDecimals(2);

    connect(frequency, SIGNAL(valueChanged(double)),
            this, SLOT(tuningFrequencyChanged(double)));

    int row = 0;

    subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel
                                                ("Property Box Layout"))),
                       row, 0);
    subgrid->addWidget(propertyLayout, row++, 1, 1, 2);

    subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel
                                                ("Tuning Frequency"))),
                       row, 0);
    subgrid->addWidget(frequency, row++, 1, 1, 2);

    subgrid->addWidget(new QLabel(prefs->getPropertyLabel
                                  ("Smooth Spectrogram")),
                       row, 0, 1, 2);
    subgrid->addWidget(smoothing, row++, 2);

    subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel
                                                ("Window Type"))),
                       row, 0);
    subgrid->addWidget(m_windowTypeSelector, row++, 1, 2, 2);
    subgrid->setRowStretch(row, 10);
    row++;
    
    QHBoxLayout *hbox = new QHBoxLayout;
    grid->addLayout(hbox, 1, 0);
    
    QPushButton *ok = new QPushButton(tr("OK"));
    QPushButton *cancel = new QPushButton(tr("Cancel"));
    hbox->addStretch(10);
    hbox->addWidget(ok);
    hbox->addWidget(m_applyButton);
    hbox->addWidget(cancel);
    connect(ok, SIGNAL(clicked()), this, SLOT(okClicked()));
    connect(m_applyButton, SIGNAL(clicked()), this, SLOT(applyClicked()));
    connect(cancel, SIGNAL(clicked()), this, SLOT(cancelClicked()));

    m_applyButton->setEnabled(false);
}

PreferencesDialog::~PreferencesDialog()
{
    std::cerr << "PreferencesDialog::~PreferencesDialog()" << std::endl;
}

void
PreferencesDialog::windowTypeChanged(WindowType type)
{
    m_windowType = type;
    m_applyButton->setEnabled(true);
}

void
PreferencesDialog::smoothSpectrogramChanged(int state)
{
    m_smoothSpectrogram = (state == Qt::Checked);
    m_applyButton->setEnabled(true);
}

void
PreferencesDialog::propertyLayoutChanged(int layout)
{
    m_propertyLayout = layout;
    m_applyButton->setEnabled(true);
}

void
PreferencesDialog::tuningFrequencyChanged(double freq)
{
    m_tuningFrequency = freq;
    m_applyButton->setEnabled(true);
}

void
PreferencesDialog::okClicked()
{
    applyClicked();
    accept();
}

void
PreferencesDialog::applyClicked()
{
    Preferences *prefs = Preferences::getInstance();
    prefs->setWindowType(WindowType(m_windowType));
    prefs->setSmoothSpectrogram(m_smoothSpectrogram);
    prefs->setPropertyBoxLayout(Preferences::PropertyBoxLayout
                                (m_propertyLayout));
    prefs->setTuningFrequency(m_tuningFrequency);
    m_applyButton->setEnabled(false);
}    

void
PreferencesDialog::cancelClicked()
{
    reject();
}