/***************************************************************************
* Copyright (C) 2011-2016 by Ilya Kotov *
* forkotov02@ya.ru *
* *
* 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. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <QGridLayout>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QSlider>
#include <QCheckBox>
#include <QPushButton>
#include <QComboBox>
#include <QLabel>
#include <QPainter>
#include <QDialogButtonBox>
#include <QSettings>
#include <QMessageBox>
#include <QDir>
#include <qmmp/qmmpsettings.h>
#include "equalizer.h"
Equalizer::Equalizer(QWidget *parent) : QDialog(parent)
{
setWindowTitle(tr("Equalizer"));
m_layout = new QVBoxLayout(this);
setLayout(m_layout);
m_layout->setSpacing(5);
m_layout->setMargin(5);
QHBoxLayout *buttonsLayout = new QHBoxLayout;
buttonsLayout->setSpacing(5);
m_enabled = new QCheckBox(tr("Enable equalizer"), this);
buttonsLayout->addWidget(m_enabled);
buttonsLayout->addSpacerItem(new QSpacerItem(30, 0, QSizePolicy::Fixed, QSizePolicy::Fixed));
QLabel *label = new QLabel(this);
label->setText(tr("Preset:"));
buttonsLayout->addWidget(label);
m_presetComboBox = new QComboBox(this);
m_presetComboBox->setEditable(true);
connect(m_presetComboBox, SIGNAL(activated(int)), SLOT(loadPreset(int)));
buttonsLayout->addWidget(m_presetComboBox);
QPushButton *saveButton = new QPushButton(tr("Save"), this);
connect(saveButton, SIGNAL(pressed()), SLOT(savePreset()));
buttonsLayout->addWidget(saveButton);
QPushButton *deleteButton = new QPushButton(tr("Delete"), this);
connect(deleteButton, SIGNAL(pressed()), SLOT(deletePreset()));
buttonsLayout->addWidget(deleteButton);
QPushButton *reset = new QPushButton(tr("Reset"), this);
connect(reset, SIGNAL(clicked()), SLOT(resetSettings()));
buttonsLayout->addWidget(reset);
QDialogButtonBox *dialogButtons = new QDialogButtonBox(QDialogButtonBox::Close, Qt::Horizontal, this);
dialogButtons->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
connect(dialogButtons, SIGNAL(rejected()), SLOT(reject()));
buttonsLayout->addWidget(dialogButtons);
QGridLayout *slidersLayout = new QGridLayout;
slidersLayout->setSpacing(5);
QStringList names;
names << tr("Preamp") << "25" << "40" << "63" << "100" << "160" << "250"
<< "400" << "630" << "1k" << "1,6k" << "2,5k"
<< "4k" << "6,3k" << "10k" << "16k";
for(int i = 0; i < 16; ++i)
{
QSlider *slider = new QSlider(this);
slider->setRange(-20, 20);
slider->setTickPosition(QSlider::TicksLeft);
slider->setTickInterval(10);
QLabel *label = new QLabel(this);
label->setFrameShape(QFrame::Box);
label->setText(names.at(i));
slidersLayout->addWidget(slider, 1, i, Qt::AlignHCenter);
slidersLayout->addWidget(label, 2, i, Qt::AlignHCenter);
QLabel *label2 = new QLabel(this);
label2->setText(tr("%1dB").arg(0));
label2->setFrameShape(QFrame::Box);
label2->setMinimumWidth(fontMetrics().horizontalAdvance(tr("+%1dB").arg(20) + 5));
label2->setAlignment(Qt::AlignCenter);
slidersLayout->addWidget(label2, 0, i, Qt::AlignHCenter);
connect(slider, SIGNAL(valueChanged(int)), SLOT(updateLabel()));
m_sliders << slider;
m_labels << label2;
}
m_layout->addItem(slidersLayout);
m_layout->addItem(buttonsLayout);
setMinimumHeight(300);
foreach(QSlider *slider, m_sliders)
{
connect(slider, SIGNAL(valueChanged(int)), SLOT(applySettings()));
}
connect(m_enabled, SIGNAL(clicked()), SLOT(applySettings()));
readSettigs();
loadPresets();
}
Equalizer::~Equalizer()
{
savePresets();
qDeleteAll(m_presets);
m_presets.clear();
}
void Equalizer::readSettigs()
{
EqSettings settings = QmmpSettings::instance()->eqSettings();
m_enabled->setChecked(settings.isEnabled());
m_sliders.at(0)->setValue(settings.preamp());
for(int i = 0; i < EqSettings::EQ_BANDS_15; ++i)
{
m_sliders.at(i+1)->setValue(settings.gain(i));
}
}
void Equalizer::loadPresets()
{
m_presetComboBox->clear();
//equalizer presets
QString preset_path = Qmmp::configDir() + "/eq15.preset";
if(!QFile::exists(preset_path))
preset_path = ":/qsui/eq15.preset";
QSettings eq_preset (preset_path, QSettings::IniFormat);
int i = 0;
while(eq_preset.contains("Presets/Preset"+QString("%1").arg(++i)))
{
QString name = eq_preset.value(QString("Presets/Preset%1").arg(i), tr("preset")).toString();
EQPreset *preset = new EQPreset();
//preset->setText(name);
eq_preset.beginGroup(name);
for (int j = 0; j < EqSettings::EQ_BANDS_15; ++j)
{
preset->setGain(j,eq_preset.value(QString("Band%1").arg(j), 0).toDouble());
}
preset->setPreamp(eq_preset.value("Preamp",0).toDouble());
m_presets.append(preset);
m_presetComboBox->addItem(name);
eq_preset.endGroup();
}
m_presetComboBox->clearEditText();
}
void Equalizer::applySettings()
{
EqSettings settings(EqSettings::EQ_BANDS_15);
settings.setPreamp(m_sliders.at(0)->value());
settings.setEnabled(m_enabled->isChecked());
for(int i = 0; i < EqSettings::EQ_BANDS_15; ++i)
{
settings.setGain(i, m_sliders.at(i+1)->value());
}
QmmpSettings::instance()->setEqSettings(settings);
}
void Equalizer::resetSettings()
{
foreach(QSlider *slider, m_sliders)
{
slider->setValue(0);
}
applySettings();
m_presetComboBox->setCurrentIndex(-1);
}
void Equalizer::updateLabel()
{
QSlider *slider = qobject_cast<QSlider *>(sender());
int index = m_sliders.indexOf(slider);
if(index < 0)
return;
if(slider->value() > 0)
m_labels[index]->setText(tr("+%1dB").arg(slider->value()));
else
m_labels[index]->setText(tr("%1dB").arg(slider->value()));
}
void Equalizer::loadPreset(int index)
{
EQPreset *preset = m_presets.at(index);
m_sliders.at(0)->setValue(preset->preamp());
for(int i = 0; i < EqSettings::EQ_BANDS_15; ++i)
{
m_sliders.at(i+1)->setValue(preset->gain(i));
}
applySettings();
}
void Equalizer::savePreset()
{
QString name = m_presetComboBox->currentText();
if(name.isEmpty())
return;
int index = m_presetComboBox->findText(name);
if(index != -1)
{
if(QMessageBox::question(this, tr("Overwrite Request"),
tr("Preset '%1' already exists. Overwrite?").arg(name),
QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)
return;
m_presets[index]->setPreamp(m_sliders.at(0)->value());
for(int i = 0; i < EqSettings::EQ_BANDS_15; ++i)
{
m_presets[index]->setGain(i, m_sliders.at(i+1)->value());
}
}
else
{
m_presetComboBox->addItem(name);
EQPreset *preset = new EQPreset();
preset->setPreamp(m_sliders.at(0)->value());
for(int i = 0; i < EqSettings::EQ_BANDS_15; ++i)
{
preset->setGain(i, m_sliders.at(i+1)->value());
}
m_presets.append(preset);
}
m_presetComboBox->clearEditText();
}
void Equalizer::savePresets()
{
QSettings eq_preset (Qmmp::configDir() + "/eq15.preset", QSettings::IniFormat);
eq_preset.clear ();
for (int i = 0; i < m_presets.size(); ++i)
{
eq_preset.setValue(QString("Presets/Preset%1").arg(i+1), m_presetComboBox->itemText(i));
eq_preset.beginGroup(m_presetComboBox->itemText(i));
for (int j = 0; j < EqSettings::EQ_BANDS_15; ++j)
{
eq_preset.setValue(QString("Band%1").arg(j),m_presets.at(i)->gain(j));
}
eq_preset.setValue("Preamp",m_presets.at(i)->preamp());
eq_preset.endGroup();
}
}
void Equalizer::deletePreset()
{
QString name = m_presetComboBox->currentText();
if(name.isEmpty())
return;
int index = m_presetComboBox->findText(name);
if(index != -1)
{
m_presetComboBox->removeItem(index);
delete m_presets.takeAt(index);
}
m_presetComboBox->clearEditText();
}
