Chris@416: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@416: 
Chris@416: /*
Chris@416:     Sonic Visualiser
Chris@416:     An audio file viewer and annotation editor.
Chris@416:     Centre for Digital Music, Queen Mary, University of London.
Chris@416:     This file copyright 2008 QMUL.
Chris@416:     
Chris@416:     This program is free software; you can redistribute it and/or
Chris@416:     modify it under the terms of the GNU General Public License as
Chris@416:     published by the Free Software Foundation; either version 2 of the
Chris@416:     License, or (at your option) any later version.  See the file
Chris@416:     COPYING included with this distribution for more information.
Chris@416: */
Chris@416: 
Chris@416: #include "TransformFinder.h"
Chris@416: 
Chris@424: #include "base/XmlExportable.h"
Chris@416: #include "transform/TransformFactory.h"
Chris@424: #include "SelectableLabel.h"
Chris@416: 
Chris@421: #include <QVBoxLayout>
Chris@416: #include <QGridLayout>
Chris@416: #include <QLineEdit>
Chris@416: #include <QLabel>
Chris@416: #include <QDialogButtonBox>
Chris@416: #include <QScrollArea>
Chris@421: #include <QApplication>
Chris@423: #include <QDesktopWidget>
Chris@424: #include <QTimer>
Chris@426: #include <QAction>
Chris@421: 
Chris@416: TransformFinder::TransformFinder(QWidget *parent) :
Chris@417:     QDialog(parent),
Chris@417:     m_resultsFrame(0),
Chris@417:     m_resultsLayout(0)
Chris@416: {
Chris@416:     setWindowTitle(tr("Find a Transform"));
Chris@416:     
Chris@416:     QGridLayout *mainGrid = new QGridLayout;
Chris@421:     mainGrid->setVerticalSpacing(0);
Chris@416:     setLayout(mainGrid);
Chris@416: 
Chris@416:     mainGrid->addWidget(new QLabel(tr("Find:")), 0, 0);
Chris@416:     
Chris@416:     QLineEdit *searchField = new QLineEdit;
Chris@416:     mainGrid->addWidget(searchField, 0, 1);
Chris@416:     connect(searchField, SIGNAL(textChanged(const QString &)),
Chris@416:             this, SLOT(searchTextChanged(const QString &)));
Chris@416: 
Chris@416:     m_resultsScroll = new QScrollArea;
Chris@420: //    m_resultsScroll->setWidgetResizable(true);
Chris@416:     mainGrid->addWidget(m_resultsScroll, 1, 0, 1, 2);
Chris@416:     mainGrid->setRowStretch(1, 10);
Chris@416: 
Chris@416:     QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok |
Chris@416:                                                 QDialogButtonBox::Cancel);
Chris@416:     mainGrid->addWidget(bb, 2, 0, 1, 2);
Chris@416:     connect(bb, SIGNAL(accepted()), this, SLOT(accept()));
Chris@416:     connect(bb, SIGNAL(rejected()), this, SLOT(reject()));
Chris@421:     if (!m_resultsLayout) {
Chris@421:         std::cerr << "creating frame & layout" << std::endl;
Chris@421:         m_resultsFrame = new QWidget;
Chris@421:         QPalette palette = m_resultsFrame->palette();
Chris@421:         palette.setColor(QPalette::Window, palette.color(QPalette::Base));
Chris@421:         m_resultsFrame->setPalette(palette);
Chris@421:         m_resultsScroll->setPalette(palette);
Chris@421:         m_resultsLayout = new QVBoxLayout;
Chris@423:         m_resultsLayout->setSpacing(0);
Chris@423:         m_resultsLayout->setContentsMargins(0, 0, 0, 0);
Chris@421:         m_resultsFrame->setLayout(m_resultsLayout);
Chris@421:         m_resultsScroll->setWidget(m_resultsFrame);
Chris@421:         m_resultsFrame->show();
Chris@421:     }
Chris@416: 
Chris@426:     QAction *up = new QAction(tr("Up"), this);
Chris@426:     up->setShortcut(tr("Up"));
Chris@426:     connect(up, SIGNAL(triggered()), this, SLOT(up()));
Chris@426:     addAction(up);
Chris@426: 
Chris@426:     QAction *down = new QAction(tr("Down"), this);
Chris@426:     down->setShortcut(tr("Down"));
Chris@426:     connect(down, SIGNAL(triggered()), this, SLOT(down()));
Chris@426:     addAction(down);
Chris@426: 
Chris@423:     QDesktopWidget *desktop = QApplication::desktop();
Chris@423:     QRect available = desktop->availableGeometry();
Chris@423: 
Chris@423:     int width = available.width() / 2;
Chris@423:     int height = available.height() / 2;
Chris@423:     if (height < 450) {
Chris@423:         if (available.height() > 500) height = 450;
Chris@423:     }
Chris@423:     if (width < 600) {
Chris@423:         if (available.width() > 650) width = 600;
Chris@423:     }
Chris@423: 
Chris@423:     resize(width, height);
Chris@423:     raise();
Chris@424: 
Chris@424:     m_upToDateCount = 0;
Chris@424:     m_timer = new QTimer(this);
Chris@424:     connect(m_timer, SIGNAL(timeout()), this, SLOT(timeout()));
Chris@425:     m_timer->start(30);
Chris@416: }
Chris@416: 
Chris@416: TransformFinder::~TransformFinder()
Chris@416: {
Chris@416: }
Chris@416: 
Chris@416: void
Chris@416: TransformFinder::searchTextChanged(const QString &text)
Chris@416: {
Chris@416:     std::cerr << "text is " << text.toStdString() << std::endl;
Chris@424:     m_newSearchText = text;
Chris@424: }
Chris@416: 
Chris@424: void
Chris@424: TransformFinder::timeout()
Chris@424: {
Chris@424:     int maxResults = 40;
Chris@416:     
Chris@424:     if (m_newSearchText != "") {
Chris@416: 
Chris@424:         QString text = m_newSearchText;
Chris@424:         m_newSearchText = "";
Chris@424: 
Chris@424:         QStringList keywords = text.split(' ', QString::SkipEmptyParts);
Chris@424:         TransformFactory::SearchResults results =
Chris@424:             TransformFactory::getInstance()->search(keywords);
Chris@424:         
Chris@424:         std::cerr << results.size() << " result(s)..." << std::endl;
Chris@424:         
Chris@424:         std::set<TransformFactory::Match> sorted;
Chris@424:         sorted.clear();
Chris@424:         for (TransformFactory::SearchResults::const_iterator j = results.begin();
Chris@424:              j != results.end(); ++j) {
Chris@424:             sorted.insert(j->second);
Chris@424:         }
Chris@424: 
Chris@424:         m_sortedResults.clear();
Chris@424:         for (std::set<TransformFactory::Match>::const_iterator j = sorted.end();
Chris@424:              j != sorted.begin(); ) {
Chris@424:             --j;
Chris@424:             m_sortedResults.push_back(*j);
Chris@424:             if (m_sortedResults.size() == maxResults) break;
Chris@424:         }
Chris@424: 
Chris@424:         if (m_sortedResults.empty()) m_selectedTransform = "";
Chris@424:         else m_selectedTransform = m_sortedResults.begin()->transform;
Chris@424: 
Chris@424:         m_upToDateCount = 0;
Chris@424: 
Chris@424:         for (int j = m_labels.size(); j > m_sortedResults.size(); ) {
Chris@424:             m_labels[--j]->hide();
Chris@424:         }
Chris@424: 
Chris@424:         return;
Chris@416:     }
Chris@416: 
Chris@425:     if (m_upToDateCount >= m_sortedResults.size()) return;
Chris@425: 
Chris@425:     while (m_upToDateCount < m_sortedResults.size()) {
Chris@417: 
Chris@424:         int i = m_upToDateCount;
Chris@416: 
Chris@424:         std::cerr << "sorted size = " << m_sortedResults.size() << std::endl;
Chris@417: 
Chris@416:         TransformDescription desc =
Chris@424:             TransformFactory::getInstance()->getTransformDescription
Chris@424:             (m_sortedResults[i].transform);
Chris@419: 
Chris@419:         QString labelText;
Chris@425:         labelText += tr("%1<br><small>")
Chris@424:             .arg(XmlExportable::encodeEntities(desc.name));
Chris@424: 
Chris@416:         labelText += "...";
Chris@416:         for (TransformFactory::Match::FragmentMap::const_iterator k =
Chris@424:                  m_sortedResults[i].fragments.begin();
Chris@424:              k != m_sortedResults[i].fragments.end(); ++k) {
Chris@416:             labelText += k->second;
Chris@416:             labelText += "... ";
Chris@416:         }
Chris@416:         labelText += tr("</small>");
Chris@417: 
Chris@419:         QString selectedText;
Chris@424:         selectedText += tr("<b>%1</b><br>")
Chris@424:             .arg(XmlExportable::encodeEntities(desc.name));
Chris@424:         selectedText += tr("<small>%1</small>")
Chris@424:             .arg(XmlExportable::encodeEntities(desc.longDescription));
Chris@419: 
Chris@426:         selectedText += tr("<br><small>");
Chris@426:         selectedText += tr("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&mdash; Plugin type: %1<br>")
Chris@424:             .arg(XmlExportable::encodeEntities(desc.type));
Chris@426:         selectedText += tr("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&mdash; Category: %1<br>")
Chris@424:             .arg(XmlExportable::encodeEntities(desc.category));
Chris@426:         selectedText += tr("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&mdash; System identifier: %1")
Chris@424:             .arg(XmlExportable::encodeEntities(desc.identifier));
Chris@426:         selectedText += tr("</small>");
Chris@419: 
Chris@417:         if (i >= m_labels.size()) {
Chris@419:             SelectableLabel *label = new SelectableLabel(m_resultsFrame);
Chris@421:             m_resultsLayout->addWidget(label);
Chris@420:             connect(label, SIGNAL(selectionChanged()), this,
Chris@420:                     SLOT(selectedLabelChanged()));
Chris@424:             connect(label, SIGNAL(doubleClicked()), this,
Chris@424:                     SLOT(accept()));
Chris@421:             QPalette palette = label->palette();
Chris@421:             label->setPalette(palette);
Chris@417:             m_labels.push_back(label);
Chris@417:         }
Chris@421: 
Chris@420:         m_labels[i]->setObjectName(desc.identifier);
Chris@423:         m_labels[i]->setFixedWidth(this->width() - 40);
Chris@419:         m_labels[i]->setUnselectedText(labelText);
Chris@425: 
Chris@425: //        std::cerr << "selected text: " << selectedText.toStdString() << std::endl;
Chris@419:         m_labels[i]->setSelectedText(selectedText);
Chris@423: 
Chris@424:         m_labels[i]->setSelected(m_selectedTransform == desc.identifier);
Chris@425: 
Chris@425:         if (!m_labels[i]->isVisible()) m_labels[i]->show();
Chris@417: 
Chris@424:         ++m_upToDateCount;
Chris@424: 
Chris@425:         if (i == 0) break;
Chris@416:     }
Chris@425: 
Chris@425:     m_resultsFrame->resize(m_resultsFrame->sizeHint());
Chris@416: }
Chris@416: 
Chris@420: void
Chris@420: TransformFinder::selectedLabelChanged()
Chris@420: {
Chris@420:     QObject *s = sender();
Chris@420:     m_selectedTransform = "";
Chris@420:     for (int i = 0; i < m_labels.size(); ++i) {
Chris@420:         if (!m_labels[i]->isVisible()) continue;
Chris@420:         if (m_labels[i] == s) {
Chris@420:             if (m_labels[i]->isSelected()) {
Chris@420:                 m_selectedTransform = m_labels[i]->objectName();
Chris@420:             }
Chris@420:         } else {
Chris@420:             if (m_labels[i]->isSelected()) {
Chris@420:                 m_labels[i]->setSelected(false);
Chris@420:             }
Chris@420:         }
Chris@420:     }
Chris@420:     std::cerr << "selectedLabelChanged: selected transform is now \""
Chris@420:               << m_selectedTransform.toStdString() << "\"" << std::endl;
Chris@420: }
Chris@420: 
Chris@416: TransformId
Chris@416: TransformFinder::getTransform() const
Chris@416: {
Chris@424:     return m_selectedTransform;
Chris@416: }
Chris@416: 
Chris@426: void
Chris@426: TransformFinder::up()
Chris@426: {
Chris@426:     for (int i = 0; i < m_labels.size(); ++i) {
Chris@426:         if (!m_labels[i]->isVisible()) continue;
Chris@426:         if (m_labels[i]->objectName() == m_selectedTransform) {
Chris@426:             if (i > 0) {
Chris@426:                 m_labels[i]->setSelected(false);
Chris@426:                 m_labels[i-1]->setSelected(true);
Chris@426:                 m_selectedTransform = m_labels[i-1]->objectName();
Chris@426:             }
Chris@426:             return;
Chris@426:         }
Chris@426:     }
Chris@426: }
Chris@426: 
Chris@426: void
Chris@426: TransformFinder::down()
Chris@426: {
Chris@426:     for (int i = 0; i < m_labels.size(); ++i) {
Chris@426:         if (!m_labels[i]->isVisible()) continue;
Chris@426:         if (m_labels[i]->objectName() == m_selectedTransform) {
Chris@426:             if (i+1 < m_labels.size() &&
Chris@426:                 m_labels[i+1]->isVisible()) {
Chris@426:                 m_labels[i]->setSelected(false);
Chris@426:                 m_labels[i+1]->setSelected(true);
Chris@426:                 m_selectedTransform = m_labels[i+1]->objectName();
Chris@426:             }
Chris@426:             return;
Chris@426:         }
Chris@426:     }
Chris@426: }
Chris@426: