view widgets/TransformFinder.cpp @ 416:f4487328320d

* Start work on TransformFinder dialog

/* -*- 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 2008 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 "TransformFinder.h"

#include "transform/TransformFactory.h"

#include <QVBoxLayout>
#include <QGridLayout>
#include <QLineEdit>
#include <QLabel>
#include <QDialogButtonBox>
#include <QScrollArea>

TransformFinder::TransformFinder(QWidget *parent) :
    QDialog(parent)
{
    setWindowTitle(tr("Find a Transform"));
    
    QGridLayout *mainGrid = new QGridLayout;
    setLayout(mainGrid);

    mainGrid->addWidget(new QLabel(tr("Find:")), 0, 0);
    
    QLineEdit *searchField = new QLineEdit;
    mainGrid->addWidget(searchField, 0, 1);
    connect(searchField, SIGNAL(textChanged(const QString &)),
            this, SLOT(searchTextChanged(const QString &)));

    m_resultsScroll = new QScrollArea;
    mainGrid->addWidget(m_resultsScroll, 1, 0, 1, 2);
    mainGrid->setRowStretch(1, 10);

    QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok |
                                                QDialogButtonBox::Cancel);
    mainGrid->addWidget(bb, 2, 0, 1, 2);
    connect(bb, SIGNAL(accepted()), this, SLOT(accept()));
    connect(bb, SIGNAL(rejected()), this, SLOT(reject()));

    resize(500, 400); //!!!
}

TransformFinder::~TransformFinder()
{
}

void
TransformFinder::searchTextChanged(const QString &text)
{
    std::cerr << "text is " << text.toStdString() << std::endl;

    QStringList keywords = text.split(' ', QString::SkipEmptyParts);
    TransformFactory::SearchResults results =
        TransformFactory::getInstance()->search(keywords);
    
    std::cerr << results.size() << " result(s)..." << std::endl;

    std::set<TransformFactory::Match> sorted;
    for (TransformFactory::SearchResults::const_iterator j = results.begin();
         j != results.end(); ++j) {
        sorted.insert(j->second);
    }

    int i = 0;
/*
    for (std::set<TransformFactory::Match>::const_iterator j = sorted.begin();
         j != sorted.end(); ++j) {
        std::cerr << i++ << ": " << j->transform.toStdString() << ": ";
        for (TransformFactory::Match::FragmentMap::const_iterator k =
                 j->fragments.begin();
             k != j->fragments.end(); ++k) {
            std::cerr << k->first.toStdString() << ": "
                      << k->second.toStdString() << " ";
        }
        std::cerr << "(" << j->score << ")" << std::endl;
    }
*/
    QFrame *resultsFrame = new QFrame;
    QVBoxLayout *resultsLayout = new QVBoxLayout;
    resultsFrame->setLayout(resultsLayout);

    i = 0;
    int maxResults = 40;

    for (std::set<TransformFactory::Match>::const_iterator j = sorted.end();
         j != sorted.begin(); ) {
        --j;
        QString labelText;
        TransformDescription desc =
            TransformFactory::getInstance()->getTransformDescription(j->transform);
        labelText += tr("%2<br><small>").arg(desc.name);
        labelText += "...";
        for (TransformFactory::Match::FragmentMap::const_iterator k =
                 j->fragments.begin();
             k != j->fragments.end(); ++k) {
            labelText += k->second;
            labelText += "... ";
        }
        labelText += tr("</small>");
        resultsLayout->addWidget(new QLabel(labelText));
        if (++i == maxResults) break;
    }

    QWidget *oldWidget = m_resultsScroll->takeWidget();
    m_resultsScroll->setWidget(resultsFrame);
    delete oldWidget;
}

TransformId
TransformFinder::getTransform() const
{
    return "";
}