annotate widgets/PluginParameterDialog.cpp @ 150:b1a3a9400284

* Add a bit of resistance to pane dragging so as to make it harder to
  inadvertently drag in the other axis from the one you intended

/* -*- 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 "PluginParameterDialog.h"

#include "PluginParameterBox.h"
#include "WindowTypeSelector.h"

#include "vamp-sdk/Plugin.h"
#include "vamp-sdk/PluginHostAdapter.h"

#include <QGridLayout>
#include <QLabel>
#include <QGroupBox>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QScrollArea>
#include <QPushButton>
#include <QMessageBox>
#include <QComboBox>
#include <QSettings>

PluginParameterDialog::PluginParameterDialog(Vamp::PluginBase *plugin,
                                             int sourceChannels,
                                             int targetChannels,
                                             int defaultChannel,
                                             QString output,
                                             bool showWindowSize,
                                             bool showFrequencyDomainOptions,
					     QWidget *parent) :
    QDialog(parent),
    m_plugin(plugin),
    m_channel(defaultChannel),
    m_stepSize(0),
    m_blockSize(0),
    m_windowType(HanningWindow),
    m_parameterBox(0)
{
    setWindowTitle(tr("Plugin Parameters"));

    QGridLayout *grid = new QGridLayout;
    setLayout(grid);

    QGroupBox *pluginBox = new QGroupBox;
    pluginBox->setTitle(tr("Plugin"));
    grid->addWidget(pluginBox, 0, 0);

    QGridLayout *subgrid = new QGridLayout;
    pluginBox->setLayout(subgrid);

    subgrid->setSpacing(0);
    subgrid->setMargin(10);

    QFont font(pluginBox->font());
    font.setBold(true);

    QLabel *nameLabel = new QLabel(plugin->getDescription().c_str());
    nameLabel->setWordWrap(true);
    nameLabel->setFont(font);

    QLabel *makerLabel = new QLabel(plugin->getMaker().c_str());
    makerLabel->setWordWrap(true);

    QLabel *outputLabel = 0;

    if (output != "") {

        Vamp::PluginHostAdapter *fePlugin = dynamic_cast<Vamp::PluginHostAdapter *>(m_plugin);

        if (fePlugin) {

            std::vector<Vamp::Plugin::OutputDescriptor> od =
                fePlugin->getOutputDescriptors();

            if (od.size() > 1) {

                for (size_t i = 0; i < od.size(); ++i) {
                    if (od[i].name == output.toStdString()) {
                        outputLabel = new QLabel(od[i].description.c_str());
                        outputLabel->setWordWrap(true);
                        break;
                    }
                }
            }
        }
    }

    QLabel *versionLabel = new QLabel(QString("%1")
                                      .arg(plugin->getPluginVersion()));
    versionLabel->setWordWrap(true);

    QLabel *copyrightLabel = new QLabel(plugin->getCopyright().c_str());
    copyrightLabel->setWordWrap(true);

    QLabel *typeLabel = new QLabel(plugin->getType().c_str());
    typeLabel->setWordWrap(true);
    typeLabel->setFont(font);

    QLabel *label = new QLabel(tr("Name:"));
    label->setAlignment(Qt::AlignTop | Qt::AlignLeft);
    subgrid->addWidget(label, 0, 0);
    subgrid->addWidget(nameLabel, 0, 1);

    label = new QLabel(tr("Type:"));
    label->setAlignment(Qt::AlignTop | Qt::AlignLeft);
    subgrid->addWidget(label, 1, 0);
    subgrid->addWidget(typeLabel, 1, 1);

    int outputOffset = 0;
    if (outputLabel) {
        label = new QLabel(tr("Output:"));
        label->setAlignment(Qt::AlignTop | Qt::AlignLeft);
        subgrid->addWidget(label, 2, 0);
        subgrid->addWidget(outputLabel, 2, 1);
        outputOffset = 1;
    }

    label = new QLabel(tr("Maker:"));
    label->setAlignment(Qt::AlignTop | Qt::AlignLeft);
    subgrid->addWidget(label, 2 + outputOffset, 0);
    subgrid->addWidget(makerLabel, 2 + outputOffset, 1);

    label = new QLabel(tr("Copyright:  "));
    label->setAlignment(Qt::AlignTop | Qt::AlignLeft);
    subgrid->addWidget(label, 3 + outputOffset, 0);
    subgrid->addWidget(copyrightLabel, 3 + outputOffset, 1);

    label = new QLabel(tr("Version:"));
    label->setAlignment(Qt::AlignTop | Qt::AlignLeft);
    subgrid->addWidget(label, 4 + outputOffset, 0);
    subgrid->addWidget(versionLabel, 4 + outputOffset, 1);

    subgrid->setColumnStretch(1, 2);

    QGroupBox *paramBox = new QGroupBox;
    paramBox->setTitle(tr("Plugin Parameters"));
    grid->addWidget(paramBox, 1, 0);
    grid->setRowStretch(1, 10);

    QHBoxLayout *paramLayout = new QHBoxLayout;
    paramLayout->setMargin(0);
    paramBox->setLayout(paramLayout);

    QScrollArea *scroll = new QScrollArea;
    scroll->setWidgetResizable(true);
    scroll->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    scroll->setFrameShape(QFrame::NoFrame);
    paramLayout->addWidget(scroll);

    m_parameterBox = new PluginParameterBox(m_plugin);
    connect(m_parameterBox, SIGNAL(pluginConfigurationChanged(QString)),
            this,  SIGNAL(pluginConfigurationChanged(QString)));
    scroll->setWidget(m_parameterBox);

    m_advanced = new QFrame;
    QVBoxLayout *advancedLayout = new QVBoxLayout;
    advancedLayout->setMargin(0);
    m_advanced->setLayout(advancedLayout);
    grid->addWidget(m_advanced, 2, 0);

    bool haveAdvanced = false;

    if (sourceChannels != targetChannels) {

        // At the moment we can only cope with the case where
        // sourceChannels > targetChannels and targetChannels == 1

        if (sourceChannels < targetChannels) {

            QMessageBox::warning
                (parent,
                 tr("Channel mismatch"),
                 tr("This plugin requires at least %1 input channels, but only %2 %3 available.  The plugin probably will not work correctly.").arg(targetChannels).arg(sourceChannels).arg(sourceChannels != 1 ? tr("are") : tr("is")),
                 QMessageBox::Ok,
                 QMessageBox::NoButton);

        } else {

            QGroupBox *channelBox = new QGroupBox;
            channelBox->setTitle(tr("Channels"));
            advancedLayout->addWidget(channelBox);
            haveAdvanced = true;
            
            QVBoxLayout *channelLayout = new QVBoxLayout;
            channelBox->setLayout(channelLayout);

            if (targetChannels != 1) {

                channelLayout->addWidget
                    (new QLabel(tr("This plugin accepts no more than %1 input channels,\nbut %2 are available.  Only the first %3 will be used.\n")
                                .arg(targetChannels)
                                .arg(sourceChannels)
                                .arg(targetChannels)));

            } else {

                channelLayout->addWidget(new QLabel(tr("This plugin only has a single channel input,\nbut the source has %1 channels.").arg(sourceChannels)));

                QComboBox *channelCombo = new QComboBox;
                channelCombo->addItem(tr("Use mean of source channels"));
                for (int i = 0; i < sourceChannels; ++i) {
                    channelCombo->addItem(tr("Use channel %1 only").arg(i + 1));
                }

                connect(channelCombo, SIGNAL(activated(int)),
                        this, SLOT(channelComboChanged(int)));

                channelLayout->addWidget(channelCombo);
            }
        }
    }

    if (showWindowSize) {

        Vamp::PluginHostAdapter *fePlugin = dynamic_cast<Vamp::PluginHostAdapter *>(m_plugin);
        int size = 1024;
        int increment = 1024;
        if (fePlugin) {
            size = fePlugin->getPreferredBlockSize();
            std::cerr << "Feature extraction plugin \"" << fePlugin->getDescription() << "\" reports preferred block size as " << size << std::endl;
            if (size == 0) size = 1024;
            increment = fePlugin->getPreferredStepSize();
            if (increment == 0) {
                if (fePlugin->getInputDomain() == Vamp::Plugin::TimeDomain) {
                    increment = size;
                } else {
                    increment = size/2;
                }
            }
        } else {
            std::cerr << "Plugin " << plugin << " is not a feature extraction plugin (it's a " << typeid(*plugin).name() << ")" << std::endl;//!!!
        }

        QGroupBox *windowBox = new QGroupBox;
        windowBox->setTitle(tr("Processing"));
        advancedLayout->addWidget(windowBox);
        haveAdvanced = true;

        QGridLayout *windowLayout = new QGridLayout;
        windowBox->setLayout(windowLayout);

        if (showFrequencyDomainOptions) {
            windowLayout->addWidget(new QLabel(tr("Window size:")), 0, 0);
        } else {
            windowLayout->addWidget(new QLabel(tr("Audio frames per block:")), 0, 0);
        }

        std::cerr << "size: " << size << ", increment: " << increment << std::endl;

        //!!! deal with block and step sizes (coming from the plugin's
        // preferences) that don't fit into the default list

        QComboBox *blockSizeCombo = new QComboBox;
        blockSizeCombo->setEditable(true);
        bool found = false;
        for (int i = 0; i < 14; ++i) {
            int val = pow(2, i + 3);
            blockSizeCombo->addItem(QString("%1").arg(val));
            if (val == size) {
                blockSizeCombo->setCurrentIndex(i);
                found = true;
            }
        }
        if (!found) {
            blockSizeCombo->addItem(QString("%1").arg(size));
            blockSizeCombo->setCurrentIndex(blockSizeCombo->count() - 1);
        }
        blockSizeCombo->setValidator(new QIntValidator(1, pow(2, 18), this));
        connect(blockSizeCombo, SIGNAL(textChanged(QString)),
                this, SLOT(blockSizeComboChanged(QString)));
        windowLayout->addWidget(blockSizeCombo, 0, 1);

        windowLayout->addWidget(new QLabel(tr("Window increment:")), 1, 0);
        
        QComboBox *incrementCombo = new QComboBox;
        incrementCombo->setEditable(true);
        found = false;
        for (int i = 0; i < 14; ++i) {
            int val = pow(2, i + 3);
            incrementCombo->addItem(QString("%1").arg(val));
            if (val == increment) {
                incrementCombo->setCurrentIndex(i);
                found = true;
            }
        }
        if (!found) {
            incrementCombo->addItem(QString("%1").arg(increment));
            incrementCombo->setCurrentIndex(incrementCombo->count() - 1);
        }
        incrementCombo->setValidator(new QIntValidator(1, pow(2, 18), this));
        connect(incrementCombo, SIGNAL(textChanged(QString)),
                this, SLOT(incrementComboChanged(QString)));
        windowLayout->addWidget(incrementCombo, 1, 1);
        
        if (showFrequencyDomainOptions) {
            
            windowLayout->addWidget(new QLabel(tr("Window shape:")), 2, 0);
            WindowTypeSelector *windowTypeSelector = new WindowTypeSelector;
            connect(windowTypeSelector, SIGNAL(windowTypeChanged(WindowType type)),
                    this, SLOT(windowTypeChanged(type)));
            windowLayout->addWidget(windowTypeSelector, 2, 1);
        }
    }

    QHBoxLayout *hbox = new QHBoxLayout;
    grid->addLayout(hbox, 4, 0);

    bool advancedVisible = false;

    if (haveAdvanced) {

        m_advancedButton = new QPushButton(tr("Advanced >>"));
        m_advancedButton->setCheckable(true);
        connect(m_advancedButton, SIGNAL(clicked()), this, SLOT(advancedToggled()));
        
        QSettings settings;
        settings.beginGroup("PluginParameterDialog");
        advancedVisible = settings.value("advancedvisible", false).toBool();
        settings.endGroup();

        m_advanced->setVisible(false);

        hbox->addWidget(m_advancedButton);
    }

    QPushButton *ok = new QPushButton(tr("OK"));
    QPushButton *cancel = new QPushButton(tr("Cancel"));
    hbox->addStretch(10);
    hbox->addWidget(ok);
    hbox->addWidget(cancel);
    connect(ok, SIGNAL(clicked()), this, SLOT(accept()));
    connect(cancel, SIGNAL(clicked()), this, SLOT(reject()));

    if (advancedVisible) {
        m_advancedButton->setChecked(true);
        advancedToggled();
    }
}

PluginParameterDialog::~PluginParameterDialog()
{
}

void
PluginParameterDialog::getProcessingParameters(size_t &blockSize) const
{
    blockSize = m_blockSize;
    return;
}

void
PluginParameterDialog::getProcessingParameters(size_t &stepSize,
                                               size_t &blockSize,
                                               WindowType &windowType) const
{
    stepSize = m_stepSize;
    blockSize = m_blockSize;
    windowType = m_windowType;
    return;
}

void
PluginParameterDialog::blockSizeComboChanged(QString text)
{
    m_blockSize = text.toInt();
    std::cerr << "Block size changed to " << m_blockSize << std::endl;
}

void
PluginParameterDialog::incrementComboChanged(QString text)
{
    m_stepSize = text.toInt();
    //!!! rename increment to step size throughout
    std::cerr << "Increment changed to " << m_stepSize << std::endl;
}

void
PluginParameterDialog::windowTypeChanged(WindowType type)
{
    m_windowType = type;
}

void
PluginParameterDialog::advancedToggled()
{
    bool visible = !m_advanced->isVisible();

    m_advanced->setVisible(visible);

    if (visible) m_advancedButton->setText(tr("Advanced <<"));
    else m_advancedButton->setText(tr("Advanced >>"));

    QSettings settings;
    settings.beginGroup("PluginParameterDialog");
    settings.setValue("advancedvisible", visible);
    settings.endGroup();

    std::cerr << "resize to " << sizeHint().width() << " x " << sizeHint().height() << std::endl;

    setMinimumHeight(sizeHint().height());
    if (visible) setMaximumHeight(sizeHint().height());
}

void
PluginParameterDialog::channelComboChanged(int index)
{
    m_channel = index - 1;
}