view widgets/PluginParameterBox.cpp @ 190:53835534a9d3

* Allow user to activate a pane by clicking on the tab for its currently active
  layer.  Formerly nothing happened if you clicked on the tab that was already
  topmost in a given property stack, because the tab widget only emitted a signal
  if the current tab changed.  We want this to switch focus back to the pane if
  another one has been active in the mean time.
* Make the thumbwheels look a bit round.

/* -*- 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 and QMUL.
    
    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 "PluginParameterBox.h"

#include "AudioDial.h"

#include "plugin/PluginXml.h"

#include "base/RangeMapper.h"

#include <QDoubleSpinBox>
#include <QGridLayout>
#include <QComboBox>
#include <QCheckBox>
#include <QLayout>
#include <QLabel>

#include <iostream>
#include <string>

#include <cmath>

PluginParameterBox::PluginParameterBox(Vamp::PluginBase *plugin, QWidget *parent) :
    QFrame(parent),
    m_plugin(plugin)
{
    m_layout = new QGridLayout;
    setLayout(m_layout);
    populate();
}

PluginParameterBox::~PluginParameterBox()
{
}

void
PluginParameterBox::populate()
{
    Vamp::PluginBase::ParameterList params = m_plugin->getParameterDescriptors();
    Vamp::PluginBase::ProgramList programs = m_plugin->getPrograms();

    m_params.clear();

    if (params.empty() && programs.empty()) {
        m_layout->addWidget
            (new QLabel(tr("This plugin has no adjustable parameters.")),
             0, 0);
    }

    int offset = 0;

    if (!programs.empty()) {

        std::string currentProgram = m_plugin->getCurrentProgram();

        QComboBox *programCombo = new QComboBox;
        programCombo->setMaxVisibleItems(20);

        for (int i = 0; i < programs.size(); ++i) {
            programCombo->addItem(programs[i].c_str());
            if (programs[i] == currentProgram) {
                programCombo->setCurrentIndex(i);
            }
        }

        m_layout->addWidget(new QLabel(tr("Program")), 0, 0);
        m_layout->addWidget(programCombo, 0, 1, 1, 2);

        connect(programCombo, SIGNAL(currentIndexChanged(const QString &)),
                this, SLOT(programComboChanged(const QString &)));

        offset = 1;
    }

    for (size_t i = 0; i < params.size(); ++i) {

        QString name = params[i].name.c_str();
        QString description = params[i].description.c_str();
        QString unit = params[i].unit.c_str();

        float min = params[i].minValue;
        float max = params[i].maxValue;
        float deft = params[i].defaultValue;
        float value = m_plugin->getParameter(params[i].name);

        float qtz = 0.0;
        if (params[i].isQuantized) qtz = params[i].quantizeStep;

        std::vector<std::string> valueNames = params[i].valueNames;

        // construct an integer range

        int imin = 0, imax = 100;

        if (qtz > 0.0) {
            imax = int((max - min) / qtz);
        } else {
            qtz = (max - min) / 100.0;
        }

        //!!! would be nice to ensure the default value corresponds to
        // an integer!

        QLabel *label = new QLabel(description);
        m_layout->addWidget(label, i + offset, 0);

        ParamRec rec;
        rec.param = params[i];
        rec.dial = 0;
        rec.spin = 0;
        rec.check = 0;
        rec.combo = 0;
        
        if (params[i].isQuantized && !valueNames.empty()) {
            
            QComboBox *combobox = new QComboBox;
            combobox->setObjectName(name);
            for (unsigned int j = 0; j < valueNames.size(); ++j) {
                combobox->addItem(valueNames[j].c_str());
                if (lrintf((value - min) / qtz) == j) {
                    combobox->setCurrentIndex(j);
                }
            }
            connect(combobox, SIGNAL(activated(int)),
                    this, SLOT(dialChanged(int)));
            m_layout->addWidget(combobox, i + offset, 1, 1, 2);
            rec.combo = combobox;

        } else if (min == 0.0 && max == 1.0 && qtz == 1.0) {
            
            QCheckBox *checkbox = new QCheckBox;
            checkbox->setObjectName(name);
            checkbox->setCheckState(value == 0.0 ? Qt::Unchecked : Qt::Checked);
            connect(checkbox, SIGNAL(stateChanged(int)),
                    this, SLOT(checkBoxChanged(int)));
            m_layout->addWidget(checkbox, i + offset, 2);
            rec.check = checkbox;

        } else {
            
            AudioDial *dial = new AudioDial;
            dial->setObjectName(description);
            dial->setMinimum(imin);
            dial->setMaximum(imax);
            dial->setPageStep(1);
            dial->setNotchesVisible((imax - imin) <= 12);
            dial->setDefaultValue(lrintf((deft - min) / qtz));
            dial->setValue(lrintf((value - min) / qtz));
            dial->setFixedWidth(32);
            dial->setFixedHeight(32);
            dial->setRangeMapper(new LinearRangeMapper
                                 (imin, imax, min, max, unit));
            dial->setShowToolTip(true);
            connect(dial, SIGNAL(valueChanged(int)),
                    this, SLOT(dialChanged(int)));
            m_layout->addWidget(dial, i + offset, 1);

            QDoubleSpinBox *spinbox = new QDoubleSpinBox;
            spinbox->setObjectName(name);
            spinbox->setMinimum(min);
            spinbox->setMaximum(max);
            spinbox->setSuffix(QString(" %1").arg(unit));
            spinbox->setSingleStep(qtz);
            spinbox->setValue(value);
            spinbox->setDecimals(4);
            connect(spinbox, SIGNAL(valueChanged(double)),
                    this, SLOT(spinBoxChanged(double)));
            m_layout->addWidget(spinbox, i + offset, 2);
            rec.dial = dial;
            rec.spin = spinbox;
        }

        m_params[name] = rec;
        m_descriptionMap[description] = name;
    }
}

void
PluginParameterBox::dialChanged(int ival)
{
    QObject *obj = sender();
    QString name = obj->objectName();

    if (m_params.find(name) == m_params.end() &&
        m_descriptionMap.find(name) != m_descriptionMap.end()) {
        name = m_descriptionMap[name];
    }

    if (m_params.find(name) == m_params.end()) {
        std::cerr << "WARNING: PluginParameterBox::dialChanged: Unknown parameter \"" << name.toStdString() << "\"" << std::endl;
        return;
    }

    Vamp::PluginBase::ParameterDescriptor params = m_params[name].param;

    float min = params.minValue;
    float max = params.maxValue;

    float newValue;

    float qtz = 0.0;
    if (params.isQuantized) qtz = params.quantizeStep;

    AudioDial *ad = dynamic_cast<AudioDial *>(obj);
    
    if (ad && ad->rangeMapper()) {
        
        newValue = ad->mappedValue();
        if (newValue < min) newValue = min;
        if (newValue > max) newValue = max;
        if (qtz != 0.0) {
            ival = lrintf((newValue - min) / qtz);
            newValue = min + ival * qtz;
        }

    } else {
        if (qtz == 0.0) {
            qtz = (max - min) / 100.0;
        }
        newValue = min + ival * qtz;
    }

    QDoubleSpinBox *spin = m_params[name].spin;
    if (spin) {
        spin->blockSignals(true);
        spin->setValue(newValue);
        spin->blockSignals(false);
    }

    m_plugin->setParameter(name.toStdString(), newValue);

    emit pluginConfigurationChanged(PluginXml(m_plugin).toXmlString());
}

void
PluginParameterBox::checkBoxChanged(int state)
{
    QObject *obj = sender();
    QString name = obj->objectName();

    if (m_params.find(name) == m_params.end() &&
        m_descriptionMap.find(name) != m_descriptionMap.end()) {
        name = m_descriptionMap[name];
    }

    if (m_params.find(name) == m_params.end()) {
        std::cerr << "WARNING: PluginParameterBox::checkBoxChanged: Unknown parameter \"" << name.toStdString() << "\"" << std::endl;
        return;
    }

    Vamp::PluginBase::ParameterDescriptor params = m_params[name].param;

    if (state) m_plugin->setParameter(name.toStdString(), 1.0);
    else m_plugin->setParameter(name.toStdString(), 0.0);

    emit pluginConfigurationChanged(PluginXml(m_plugin).toXmlString());
}

void
PluginParameterBox::spinBoxChanged(double value)
{
    QObject *obj = sender();
    QString name = obj->objectName();

    if (m_params.find(name) == m_params.end() &&
        m_descriptionMap.find(name) != m_descriptionMap.end()) {
        name = m_descriptionMap[name];
    }

    if (m_params.find(name) == m_params.end()) {
        std::cerr << "WARNING: PluginParameterBox::spinBoxChanged: Unknown parameter \"" << name.toStdString() << "\"" << std::endl;
        return;
    }

    Vamp::PluginBase::ParameterDescriptor params = m_params[name].param;

    float min = params.minValue;
    float max = params.maxValue;

    float qtz = 0.0;
    if (params.isQuantized) qtz = params.quantizeStep;
    
    if (qtz > 0.0) {
        int step = int((value - min) / qtz);
        value = min + step * qtz;
    }

    int imin = 0, imax = 100;
    
    if (qtz > 0.0) {
        imax = int((max - min) / qtz);
    } else {
        qtz = (max - min) / 100.0;
    }

    int ival = (value - min) / qtz;

    AudioDial *dial = m_params[name].dial;
    if (dial) {
        dial->blockSignals(true);
        dial->setValue(ival);
        dial->blockSignals(false);
    }

    m_plugin->setParameter(name.toStdString(), value);

    emit pluginConfigurationChanged(PluginXml(m_plugin).toXmlString());
}

void
PluginParameterBox::programComboChanged(const QString &newProgram)
{
    m_plugin->selectProgram(newProgram.toStdString());

    for (std::map<QString, ParamRec>::iterator i = m_params.begin();
         i != m_params.end(); ++i) {

        Vamp::PluginBase::ParameterDescriptor &param = i->second.param;
        float value = m_plugin->getParameter(param.name);

        if (i->second.spin) {
            i->second.spin->blockSignals(true);
            i->second.spin->setValue(value);
            i->second.spin->blockSignals(false);
        }

        if (i->second.dial) {

            float min = param.minValue;
            float max = param.maxValue;

            float qtz = 0.0;
            if (param.isQuantized) qtz = param.quantizeStep;

            if (qtz == 0.0) {
                qtz = (max - min) / 100.0;
            }

            i->second.dial->blockSignals(true);
            i->second.dial->setValue(lrintf((value - min) / qtz));
            i->second.dial->blockSignals(false);
        }

        if (i->second.combo) {
            i->second.combo->blockSignals(true);
            i->second.combo->setCurrentIndex(value);
            i->second.combo->blockSignals(false);
        }
    }

    emit pluginConfigurationChanged(PluginXml(m_plugin).toXmlString());
}