/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
    Copyright 2000-2017 the Rosegarden development team.
 
    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    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.
*/

#define RG_MODULE_STRING "[ControlParameterEditDialog]"

#include "ControlParameterEditDialog.h"

#include "gui/widgets/LineEdit.h"
#include "misc/Debug.h"
#include "misc/Strings.h"
#include "base/Colour.h"
#include "base/ColourMap.h"
#include "base/ControlParameter.h"
#include "base/Event.h"
#include "base/MidiTypes.h"
#include "document/RosegardenDocument.h"

#include <QComboBox>
#include <QDialog>
#include <QDialogButtonBox>
#include <QColor>
#include <QFrame>
#include <QGroupBox>
#include <QLabel>
#include <QPixmap>
#include <QSpinBox>
#include <QString>
#include <QWidget>
#include <QVBoxLayout>
#include <QLayout>


namespace Rosegarden
{

ControlParameterEditDialog::ControlParameterEditDialog(
    QWidget *parent,
    ControlParameter *control,
    RosegardenDocument *doc):
        QDialog(parent),
        m_doc(doc),
        m_control(control)
{
    m_dialogControl = *control; // copy in the ControlParameter

    setModal(true);
    setWindowTitle(tr("Edit Controller"));

    QGridLayout *metagrid = new QGridLayout;
    setLayout(metagrid);
    QWidget *vbox = new QWidget(this);
    QVBoxLayout *vboxLayout = new QVBoxLayout;
    metagrid->addWidget(vbox, 0, 0);


    QGroupBox *frame = new QGroupBox(tr("Controller Properties"), vbox);
    vboxLayout->addWidget(frame);
    vbox->setLayout(vboxLayout);
    frame->setContentsMargins(10, 10, 10, 10);
    QGridLayout *layout = new QGridLayout(frame);
    layout->setSpacing(5);

    layout->addWidget(new QLabel(tr("Name:"), frame), 0, 0);
    m_nameEdit = new LineEdit(frame);

    layout->addWidget(m_nameEdit, 0, 1, 1, 2);

    layout->addWidget(new QLabel(tr("Type:"), frame), 1, 0);
    m_typeCombo = new QComboBox(frame);

    // spacing hack will stretch the whole grid layout, so combos don't get
    // scrunched up:
    m_typeCombo->setMinimumContentsLength(20);

    layout->addWidget(m_typeCombo, 1, 1, 1, 2);

    layout->addWidget(new QLabel(tr("Description:"), frame), 2, 0);
    m_description = new LineEdit(frame);
    layout->addWidget(m_description, 2, 1, 1, 2);

    // hex value alongside decimal value
    m_hexValue = new QLabel(frame);
    layout->addWidget(m_hexValue, 3, 1);

    layout->addWidget(new QLabel(tr("Controller number:"), frame), 3, 0);
    m_controllerBox = new QSpinBox(frame);
    layout->addWidget(m_controllerBox, 3, 2);

    layout->addWidget(new QLabel(tr("Minimum value:"), frame), 4, 0);
    m_minBox = new QSpinBox(frame);
    layout->addWidget(m_minBox, 4, 1, 1, 2);

    layout->addWidget(new QLabel(tr("Maximum value:"), frame), 5, 0);
    m_maxBox = new QSpinBox(frame);
    layout->addWidget(m_maxBox, 5, 1, 1, 2);

    layout->addWidget(new QLabel(tr("Default value:"), frame), 6, 0);
    m_defaultBox = new QSpinBox(frame);
    layout->addWidget(m_defaultBox, 6, 1, 1, 2);

    layout->addWidget(new QLabel(tr("Color:"), frame), 7, 0);
    m_colourCombo = new QComboBox(frame);
    layout->addWidget(m_colourCombo, 7, 1, 1, 2);

    layout->addWidget(new QLabel(tr("Instrument Parameter Box position:"), frame), 8, 0);
    m_ipbPosition = new QComboBox(frame);
    layout->addWidget(m_ipbPosition, 8, 1, 1, 2);

    frame->setLayout(layout);

    connect(m_nameEdit, SIGNAL(textChanged(const QString&)),
            SLOT(slotNameChanged(const QString&)));

    connect(m_typeCombo, SIGNAL(activated(int)),
            SLOT(slotTypeChanged(int)));

    connect(m_description, SIGNAL(textChanged(const QString&)),
            SLOT(slotDescriptionChanged(const QString &)));

    connect(m_controllerBox, SIGNAL(valueChanged(int)),
            SLOT(slotControllerChanged(int)));

    connect(m_minBox, SIGNAL(valueChanged(int)),
            SLOT(slotMinChanged(int)));

    connect(m_maxBox, SIGNAL(valueChanged(int)),
            SLOT(slotMaxChanged(int)));

    connect(m_defaultBox, SIGNAL(valueChanged(int)),
            SLOT(slotDefaultChanged(int)));

    connect(m_colourCombo, SIGNAL(activated(int)),
            SLOT(slotColourChanged(int)));

    connect(m_ipbPosition, SIGNAL(activated(int)),
            SLOT(slotIPBPositionChanged(int)));

    //m_nameEdit->selectAll();
    //m_description->selectAll();

    // set limits
    m_controllerBox->setMinimum(0);
    m_controllerBox->setMaximum(127);

    m_minBox->setMinimum(INT_MIN);
    m_minBox->setMaximum(INT_MAX);

    m_maxBox->setMinimum(INT_MIN);
    m_maxBox->setMaximum(INT_MAX);

    m_defaultBox->setMinimum(INT_MIN);
    m_defaultBox->setMaximum(INT_MAX);

    // populate combos
    m_typeCombo->addItem(strtoqstr(Controller::EventType));
    m_typeCombo->addItem(strtoqstr(PitchBend::EventType));
    /*
    m_typeCombo->addItem(strtoqstr(KeyPressure::EventType));
    m_typeCombo->addItem(strtoqstr(ChannelPressure::EventType));
    */

    // Populate colour combo
    //
    //
    ColourMap &colourMap = m_doc->getComposition().getGeneralColourMap();
    RCMap::const_iterator it;
    QPixmap colourPixmap(16, 16);

    for (it = colourMap.begin(); it != colourMap.end(); ++it) {
        Colour c = it->second.first;
        colourPixmap.fill(QColor(c.getRed(), c.getGreen(), c.getBlue()));
        m_colourCombo->addItem(colourPixmap, strtoqstr(it->second.second));
    }

    // Populate IPB position combo
    //
    m_ipbPosition->addItem(tr("<not showing>"));

    // I couldn't find a constant for the maximum possible controller slots.
    // This seems to be it.  It used to be 32.  I upped it to 1024 because the
    // IPB is in a scrollable widget now, and that seems like a really
    // comfortable amount of headroom without being totally nuts like MAX_INT
    for (unsigned int i = 0; i < 1024; i++)
        m_ipbPosition->addItem(QString("%1").arg(i));

    if (m_control->getType() == Controller::EventType)
        m_typeCombo->setCurrentIndex(0);
    else if (m_control->getType() == PitchBend::EventType)
        m_typeCombo->setCurrentIndex(1);
    /*
    else if (m_control->getType() == KeyPressure::EventType)
        m_typeCombo->setCurrentIndex(2);
    else if (m_control->getType() == ChannelPressure::EventType)
        m_typeCombo->setCurrentIndex(3);
        */

    populate();
    QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    metagrid->addWidget(buttonBox, 1, 0);
    metagrid->setRowStretch(0, 10);
    connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
}

void
ControlParameterEditDialog::populate()
{
    m_nameEdit->setText(strtoqstr(m_control->getName()));

    m_description->setText(strtoqstr(m_control->getDescription()));
    m_controllerBox->setValue(int(m_control->getControllerValue()));

    QString hexValue;
    hexValue.sprintf("(0x%x)", m_control->getControllerValue());
    m_hexValue->setText(hexValue);

    m_minBox->setValue(m_control->getMin());
    m_maxBox->setValue(m_control->getMax());
    m_defaultBox->setValue(m_control->getDefault());

    int pos = 0, setItem = 0;
    ColourMap &colourMap = m_doc->getComposition().getGeneralColourMap();
    RCMap::const_iterator it;

    // I can't believe we never fixed this in all these years.  The way this was
    // structured, it was impossible for setItem to increment in order to arrive
    // at any useful value, so the color always came out "Default" 100% of the
    // time.
    for (it = colourMap.begin(); it != colourMap.end(); ++it) {
        pos++;
        if (m_control->getColourIndex() == it->first) setItem = (pos - 1);
    }

    m_colourCombo->setCurrentIndex(setItem);

    // set combo position
    m_ipbPosition->setCurrentIndex(m_control->getIPBPosition() + 1);

    // If the type has changed and there are no defaults then we have to
    // supply some.
    //
    if (qstrtostr(m_typeCombo->currentText()) == PitchBend::EventType ||
            qstrtostr(m_typeCombo->currentText()) == KeyPressure::EventType ||
            qstrtostr(m_typeCombo->currentText()) == ChannelPressure::EventType) {
        m_controllerBox->setEnabled(false);
        m_ipbPosition->setEnabled(false);
        m_colourCombo->setEnabled(false);
        m_hexValue->setEnabled(false);
        m_minBox->setEnabled(false);
        m_maxBox->setEnabled(false);
        m_defaultBox->setEnabled(false);
    } else if (qstrtostr(m_typeCombo->currentText()) == Controller::EventType) {
        m_controllerBox->setEnabled(true);
        m_ipbPosition->setEnabled(true);
        m_colourCombo->setEnabled(true);
        m_hexValue->setEnabled(true);
        m_minBox->setEnabled(true);
        m_maxBox->setEnabled(true);
        m_defaultBox->setEnabled(true);
    }

}

void
ControlParameterEditDialog::slotNameChanged(const QString &str)
{
    RG_DEBUG << "ControlParameterEditDialog::slotNameChanged";
    m_dialogControl.setName(qstrtostr(str));
}

void
ControlParameterEditDialog::slotTypeChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotTypeChanged";
    m_dialogControl.setType(qstrtostr(m_typeCombo->itemText(value)));

    populate();
}

void
ControlParameterEditDialog::slotDescriptionChanged(const QString &str)
{
    RG_DEBUG << "ControlParameterEditDialog::slotDescriptionChanged";
    m_dialogControl.setDescription(qstrtostr(str));
}

void
ControlParameterEditDialog::slotControllerChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotControllerChanged";
    m_dialogControl.setControllerValue(value);

    // set hex value
    QString hexValue;
    hexValue.sprintf("(0x%x)", value);
    m_hexValue->setText(hexValue);
}

void
ControlParameterEditDialog::slotMinChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotMinChanged";
    m_dialogControl.setMin(value);
}

void
ControlParameterEditDialog::slotMaxChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotMaxChanged";
    m_dialogControl.setMax(value);
}

void
ControlParameterEditDialog::slotDefaultChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotDefaultChanged";
    m_dialogControl.setDefault(value);
}

void
ControlParameterEditDialog::slotColourChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotColourChanged";
    m_dialogControl.setColourIndex(value);
}

void
ControlParameterEditDialog::slotIPBPositionChanged(int value)
{
    RG_DEBUG << "ControlParameterEditDialog::slotIPBPositionChanged";
    m_dialogControl.setIPBPosition(value - 1);
}

}
