/* -*- 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.
 
    This program is Copyright 2000-2008
        Guillaume Laurent   <glaurent@telegraph-road.org>,
        Chris Cannam        <cannam@all-day-breakfast.com>,
        Richard Bown        <richard.bown@ferventsoftware.com>
 
    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
    Bown to claim authorship of this work have been asserted.
 
    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.
*/


#include "AudioConfigurationPage.h"

#include "sound/Midi.h"
#include "sound/SoundDriver.h"
#include "document/ConfigGroups.h"
#include "base/MidiProgram.h"
#include "base/Studio.h"
#include "ConfigurationPage.h"
#include "document/RosegardenGUIDoc.h"
#include "gui/dialogs/ShowSequencerStatusDialog.h"
#include "gui/seqmanager/SequenceManager.h"
#include "gui/application/RosegardenApplication.h"
#include "gui/studio/StudioControl.h"
#include "sound/MappedEvent.h"
#include "TabbedConfigurationPage.h"
#include <kcombobox.h>
#include <kconfig.h>
#include <kfiledialog.h>
#include <tqcheckbox.h>
#include <tqcombobox.h>
#include <tqcstring.h>
#include <tqdatastream.h>
#include <tqframe.h>
#include <tqlabel.h>
#include <tqlineedit.h>
#include <tqobject.h>
#include <tqpushbutton.h>
#include <tqlayout.h>
#include <tqslider.h>
#include <tqspinbox.h>
#include <tqstring.h>
#include <tqstringlist.h>
#include <tqtabwidget.h>
#include <tqtooltip.h>
#include <tqwidget.h>
#include <kmessagebox.h>


namespace Rosegarden
{

AudioConfigurationPage::AudioConfigurationPage(
    RosegardenGUIDoc *doc,
    KConfig *cfg,
    TQWidget *parent,
    const char *name):
    TabbedConfigurationPage(cfg, parent, name),
    m_externalAudioEditorPath(0)
{
    // set the document in the super class
    m_doc = doc;

    m_cfg->setGroup(SequencerOptionsConfigGroup);

    TQFrame *frame = new TQFrame(m_tabWidget);
    TQGridLayout *tqlayout = new TQGridLayout(frame, 7, 2, 10, 5);

    TQLabel *label = 0;

    int row = 0;

    m_cfg->setGroup(GeneralOptionsConfigGroup);

    tqlayout->setRowSpacing(row, 15);
    ++row;

    tqlayout->addWidget(new TQLabel(i18n("Audio preview scale"),
                                 frame), row, 0);

    m_previewStyle = new KComboBox(frame);
    m_previewStyle->insertItem(i18n("Linear - easier to see loud peaks"));
    m_previewStyle->insertItem(i18n("Meter scaling - easier to see quiet activity"));
    m_previewStyle->setCurrentItem(m_cfg->readUnsignedNumEntry("audiopreviewstyle", 1));
    tqlayout->addMultiCellWidget(m_previewStyle, row, row, 1, 2);
    ++row;

#ifdef HAVE_LIBJACK
    m_cfg->setGroup(SequencerOptionsConfigGroup);

    label = new TQLabel(i18n("Record audio files as"), frame);
    m_audioRecFormat = new KComboBox(frame);
    m_audioRecFormat->insertItem(i18n("16-bit PCM WAV format (smaller files)"));
    m_audioRecFormat->insertItem(i18n("32-bit float WAV format (higher quality)"));
    m_audioRecFormat->setCurrentItem(m_cfg->readUnsignedNumEntry("audiorecordfileformat", 1));
    tqlayout->addWidget(label, row, 0);
    tqlayout->addMultiCellWidget(m_audioRecFormat, row, row, 1, 2);
    ++row;
#endif

    m_cfg->setGroup(GeneralOptionsConfigGroup);

    tqlayout->addWidget(new TQLabel(i18n("External audio editor"), frame),
                      row, 0);

    TQString defaultAudioEditor = getBestAvailableAudioEditor();

    std::cerr << "defaultAudioEditor = " << defaultAudioEditor.ascii() << std::endl;

    TQString externalAudioEditor = m_cfg->readEntry("externalaudioeditor",
                                  defaultAudioEditor);

    if (externalAudioEditor == "") {
        externalAudioEditor = defaultAudioEditor;
        m_cfg->writeEntry("externalaudioeditor", externalAudioEditor);
    }

    m_externalAudioEditorPath = new TQLineEdit(externalAudioEditor, frame);
//    m_externalAudioEditorPath->setMinimumWidth(150);
    tqlayout->addWidget(m_externalAudioEditorPath, row, 1);
    
    TQPushButton *changePathButton =
        new TQPushButton(i18n("Choose..."), frame);

    tqlayout->addWidget(changePathButton, row, 2);
    connect(changePathButton, TQT_SIGNAL(clicked()), TQT_SLOT(slotFileDialog()));
    ++row;

    m_cfg->setGroup(SequencerOptionsConfigGroup);

    tqlayout->addWidget(new TQLabel(i18n("Create JACK outputs"), frame),
                      row, 0);
//    ++row;

#ifdef HAVE_LIBJACK
    m_createFaderOuts = new TQCheckBox(i18n("for individual audio instruments"), frame);
    m_createFaderOuts->setChecked(m_cfg->readBoolEntry("audiofaderouts", false));

//    tqlayout->addWidget(label, row, 0, TQt::AlignRight);
    tqlayout->addWidget(m_createFaderOuts, row, 1);
    ++row;

    m_createSubmasterOuts = new TQCheckBox(i18n("for submasters"), frame);
    m_createSubmasterOuts->setChecked(m_cfg->readBoolEntry("audiosubmasterouts",
                                      false));

//    tqlayout->addWidget(label, row, 0, TQt::AlignRight);
    tqlayout->addWidget(m_createSubmasterOuts, row, 1);
    ++row;
#endif

    tqlayout->setRowStretch(row, 10);

    addTab(frame, i18n("General"));

    // --------------------- Startup control ----------------------
    //
#ifdef HAVE_LIBJACK
#define OFFER_JACK_START_OPTION 1
#ifdef OFFER_JACK_START_OPTION

    frame = new TQFrame(m_tabWidget);
    tqlayout = new TQGridLayout(frame, 8, 4, 10, 5);

    row = 0;

    tqlayout->setRowSpacing(row, 15);
    ++row;

    label = new TQLabel(i18n("Rosegarden can start the JACK audio daemon (jackd) for you automatically if it isn't already running when Rosegarden starts.\n\nThis is recommended for beginners and those who use Rosegarden as their main audio application, but it might not be to the liking of advanced users.\n\nIf you want to start JACK automatically, make sure the command includes a full path where necessary as well as any command-line arguments you want to use.\n\nFor example: /usr/local/bin/jackd -d alsa -d hw -r44100 -p 2048 -n 2\n\n"), frame);
    label->setAlignment(TQt::WordBreak);

    tqlayout->addMultiCellWidget(label, row, row, 0, 3);
    ++row;

    // JACK control things
    //
    bool startJack = m_cfg->readBoolEntry("jackstart", false);
    m_startJack = new TQCheckBox(frame);
    m_startJack->setChecked(startJack);

    tqlayout->addWidget(new TQLabel(i18n("Start JACK when Rosegarden starts"), frame), 2, 0);

    tqlayout->addWidget(m_startJack, row, 1);
    ++row;

    tqlayout->addWidget(new TQLabel(i18n("JACK command"), frame),
                      row, 0);

    TQString jackPath = m_cfg->readEntry("jackcommand",
                                        // "/usr/local/bin/jackd -d alsa -d hw -r 44100 -p 2048 -n 2");
                                        "/usr/bin/qjackctl -s");
    m_jackPath = new TQLineEdit(jackPath, frame);

    tqlayout->addMultiCellWidget(m_jackPath, row, row, 1, 3);
    ++row;

    tqlayout->setRowStretch(row, 10);

    addTab(frame, i18n("JACK Startup"));

#endif // OFFER_JACK_START_OPTION
#endif // HAVE_LIBJACK

}

void
AudioConfigurationPage::slotFileDialog()
{
    TQString path = KFileDialog::getOpenFileName(TQString(), TQString(), this, i18n("External audio editor path"));
    m_externalAudioEditorPath->setText(path);
}

void
AudioConfigurationPage::apply()
{
    m_cfg->setGroup(SequencerOptionsConfigGroup);

#ifdef HAVE_LIBJACK
#ifdef OFFER_JACK_START_OPTION
    // Jack control
    //
    m_cfg->writeEntry("jackstart", m_startJack->isChecked());
    m_cfg->writeEntry("jackcommand", m_jackPath->text());
#endif // OFFER_JACK_START_OPTION

    // Jack audio inputs
    //
    m_cfg->writeEntry("audiofaderouts", m_createFaderOuts->isChecked());
    m_cfg->writeEntry("audiosubmasterouts", m_createSubmasterOuts->isChecked());
    m_cfg->writeEntry("audiorecordfileformat", m_audioRecFormat->currentItem());
#endif

    m_cfg->setGroup(GeneralOptionsConfigGroup);

    int previewstyle = m_previewStyle->currentItem();
    m_cfg->writeEntry("audiopreviewstyle", previewstyle);

    TQString externalAudioEditor = getExternalAudioEditor();

    TQStringList extlist = TQStringList::split(" ", externalAudioEditor);
    TQString extpath = "";
    if (extlist.size() > 0) extpath = extlist[0];

    if (extpath != "") {
        TQFileInfo info(extpath);
        if (!info.exists() || !info.isExecutable()) {
            KMessageBox::error(0, i18n("External audio editor \"%1\" not found or not executable").tqarg(extpath));
            m_cfg->writeEntry("externalaudioeditor", "");
        } else {
            m_cfg->writeEntry("externalaudioeditor", externalAudioEditor);
        }
    } else {
        m_cfg->writeEntry("externalaudioeditor", "");
    }
}

TQString
AudioConfigurationPage::getBestAvailableAudioEditor()
{
    static TQString result = "";
    static bool haveResult = false;

    if (haveResult) return result;

    TQString path;
    const char *cpath = getenv("PATH");
    if (cpath) path = cpath;
    else path = "/usr/bin:/bin";

    TQStringList pathList = TQStringList::split(":", path);

    const char *candidates[] = {
        "mhwaveedit",
        "rezound",
        "audacity"
    };

    for (int i = 0;
         i < sizeof(candidates)/sizeof(candidates[0]) && result == "";
         i++) {

        TQString n(candidates[i]);

        for (int j = 0;
             j < pathList.size() && result == "";
             j++) {

            TQDir dir(pathList[j]);
            TQString fp(dir.filePath(n));
            TQFileInfo fi(fp);

            if (fi.exists() && fi.isExecutable()) {
                if (n == "rezound") {
                    result = TQString("%1 --audio-method=jack").tqarg(fp);
                } else {
                    result = fp;
                }
            }
        }
    }

    haveResult = true;
    return result;
}

}
#include "AudioConfigurationPage.moc"