Sonic Segmenter

/* -*- 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 <QDialogButtonBox>

#include <QMessageBox>

#include <QTabWidget>

#include <QLineEdit>

#include <QFileDialog>

#include <QMessageBox>

#include "widgets/WindowTypeSelector.h"

#include "widgets/IconLoader.h"

#include "base/Preferences.h"

PreferencesDialog::PreferencesDialog(QWidget *parent, Qt::WFlags flags) :

    QDialog(parent, flags),

    m_changesOnRestart(false)

{

    setWindowTitle(tr("Sonic Visualiser: Application Preferences"));

    Preferences *prefs = Preferences::getInstance();

    QGridLayout *grid = new QGridLayout;

    setLayout(grid);

    QTabWidget *tab = new QTabWidget;

    grid->addWidget(tab, 0, 0);

    tab->setTabPosition(QTabWidget::North);

    // Create this first, as slots that get called from the ctor will

    // refer to it

    m_applyButton = new QPushButton(tr("Apply"));

    // Create all the preference widgets first, then create the

    // individual tab widgets and place the preferences in their

    // appropriate places in one go afterwards

    int min, max, deflt, i;

    m_windowType = WindowType(prefs->getPropertyRangeAndValue

                              ("Window Type", &min, &max, &deflt));

    m_windowTypeSelector = new WindowTypeSelector(m_windowType);

    connect(m_windowTypeSelector, SIGNAL(windowTypeChanged(WindowType)),

            this, SLOT(windowTypeChanged(WindowType)));

    QComboBox *smoothing = new QComboBox;

    int sm = prefs->getPropertyRangeAndValue("Spectrogram Smoothing", &min, &max,

                                             &deflt);

    m_spectrogramSmoothing = sm;

    for (i = min; i <= max; ++i) {

        smoothing->addItem(prefs->getPropertyValueLabel("Spectrogram Smoothing", i));

    }

    smoothing->setCurrentIndex(sm);

    connect(smoothing, SIGNAL(currentIndexChanged(int)),

            this, SLOT(spectrogramSmoothingChanged(int)));

    QComboBox *propertyLayout = new QComboBox;

    int pl = prefs->getPropertyRangeAndValue("Property Box Layout", &min, &max,

                                         &deflt);

    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)));

    QComboBox *resampleQuality = new QComboBox;

    int rsq = prefs->getPropertyRangeAndValue("Resample Quality", &min, &max,

                                              &deflt);

    m_resampleQuality = rsq;

    for (i = min; i <= max; ++i) {

        resampleQuality->addItem(prefs->getPropertyValueLabel("Resample Quality", i));

    }

    resampleQuality->setCurrentIndex(rsq);

    connect(resampleQuality, SIGNAL(currentIndexChanged(int)),

            this, SLOT(resampleQualityChanged(int)));

    QCheckBox *resampleOnLoad = new QCheckBox;

    m_resampleOnLoad = prefs->getResampleOnLoad();

    resampleOnLoad->setCheckState(m_resampleOnLoad ? Qt::Checked :

                                  Qt::Unchecked);

    connect(resampleOnLoad, SIGNAL(stateChanged(int)),

            this, SLOT(resampleOnLoadChanged(int)));

    m_tempDirRootEdit = new QLineEdit;

    QString dir = prefs->getTemporaryDirectoryRoot();

    m_tempDirRoot = dir;

    dir.replace("$HOME", tr("<home directory>"));

    m_tempDirRootEdit->setText(dir);

    m_tempDirRootEdit->setReadOnly(true);

    QPushButton *tempDirButton = new QPushButton;

    tempDirButton->setIcon(IconLoader().load("fileopen"));

    connect(tempDirButton, SIGNAL(clicked()),

            this, SLOT(tempDirButtonClicked()));

    tempDirButton->setFixedSize(QSize(24, 24));

    QComboBox *bgMode = new QComboBox;

    int bg = prefs->getPropertyRangeAndValue("Background Mode", &min, &max,

                                             &deflt);

    m_backgroundMode = bg;

    for (i = min; i <= max; ++i) {

        bgMode->addItem(prefs->getPropertyValueLabel("Background Mode", i));

    }

    bgMode->setCurrentIndex(bg);

    connect(bgMode, SIGNAL(currentIndexChanged(int)),

            this, SLOT(backgroundModeChanged(int)));

    // General tab

    QFrame *frame = new QFrame;

    QGridLayout *subgrid = new QGridLayout;

    frame->setLayout(subgrid);

    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

                                                ("Background Mode"))),

                       row, 0);

    subgrid->addWidget(bgMode, row++, 1, 1, 2);

    subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel

                                                ("Resample On Load"))),

                       row, 0);

    subgrid->addWidget(resampleOnLoad, row++, 1, 1, 1);

    subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel

                                                ("Resample Quality"))),

                       row, 0);

    subgrid->addWidget(resampleQuality, row++, 1, 1, 2);

    subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel

                                                ("Temporary Directory Root"))),

                       row, 0);

    subgrid->addWidget(m_tempDirRootEdit, row, 1, 1, 1);

    subgrid->addWidget(tempDirButton, row, 2, 1, 1);

    row++;

    subgrid->setRowStretch(row, 10);

    tab->addTab(frame, tr("&General"));

    // Analysis tab

    frame = new QFrame;

    subgrid = new QGridLayout;

    frame->setLayout(subgrid);

    row = 0;

    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

                                  ("Spectrogram Smoothing")),

                       row, 0);

    subgrid->addWidget(smoothing, row++, 1, 1, 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++;

    subgrid->setRowStretch(row, 10);

    tab->addTab(frame, tr("&Analysis"));

    QDialogButtonBox *bb = new QDialogButtonBox(Qt::Horizontal);

    grid->addWidget(bb, 1, 0);

    QPushButton *ok = new QPushButton(tr("OK"));

    QPushButton *cancel = new QPushButton(tr("Cancel"));

    bb->addButton(ok, QDialogButtonBox::AcceptRole);

    bb->addButton(m_applyButton, QDialogButtonBox::ApplyRole);

    bb->addButton(cancel, QDialogButtonBox::RejectRole);

    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::spectrogramSmoothingChanged(int smoothing)

{

    m_spectrogramSmoothing = smoothing;

    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::resampleQualityChanged(int q)

{

    m_resampleQuality = q;

    m_applyButton->setEnabled(true);

}

void

PreferencesDialog::resampleOnLoadChanged(int state)

{

    m_resampleOnLoad = (state == Qt::Checked);

    m_applyButton->setEnabled(true);

    m_changesOnRestart = true;

}

void

PreferencesDialog::tempDirRootChanged(QString r)

{

    m_tempDirRoot = r;

    m_applyButton->setEnabled(true);

}

void

PreferencesDialog::tempDirButtonClicked()

{

    QString dir = QFileDialog::getExistingDirectory

        (this, tr("Select a directory to create cache subdirectory in"),

         m_tempDirRoot);

    if (dir == "") return;

    m_tempDirRootEdit->setText(dir);

    tempDirRootChanged(dir);

    m_changesOnRestart = true;

}

void

PreferencesDialog::backgroundModeChanged(int mode)

{

    m_backgroundMode = mode;

    m_applyButton->setEnabled(true);

    m_changesOnRestart = true;

}

void

PreferencesDialog::okClicked()

{

    applyClicked();

    accept();

}

void

PreferencesDialog::applyClicked()

{

    Preferences *prefs = Preferences::getInstance();

    prefs->setWindowType(WindowType(m_windowType));

    prefs->setSpectrogramSmoothing(Preferences::SpectrogramSmoothing

                                   (m_spectrogramSmoothing));

    prefs->setPropertyBoxLayout(Preferences::PropertyBoxLayout

                                (m_propertyLayout));

    prefs->setTuningFrequency(m_tuningFrequency);

    prefs->setResampleQuality(m_resampleQuality);

    prefs->setResampleOnLoad(m_resampleOnLoad);

    prefs->setTemporaryDirectoryRoot(m_tempDirRoot);

    prefs->setBackgroundMode(Preferences::BackgroundMode(m_backgroundMode));

    m_applyButton->setEnabled(false);

    if (m_changesOnRestart) {

        QMessageBox::information(this, tr("Preferences"),

                                 tr("One or more of the application preferences you have changed may not take full effect until Sonic Visualiser is restarted.\nPlease exit and restart the application now if you want these changes to take effect immediately."));

        m_changesOnRestart = false;

    }

}    

void

PreferencesDialog::cancelClicked()

{

    reject();

}

void

PreferencesDialog::applicationClosing(bool quickly)

{

    if (quickly) {

        reject();

        return;

    }

    if (m_applyButton->isEnabled()) {

        int rv = QMessageBox::warning

            (this, tr("Preferences Changed"),

             tr("Some preferences have been changed but not applied.\n"

                "Apply them before closing?"),

             QMessageBox::Apply | QMessageBox::Discard,

             QMessageBox::Discard);

        if (rv == QMessageBox::Apply) {

            applyClicked();

            accept();

        } else {

            reject();

        }

    } else {

        accept();

    }

}