lbajardsilogic@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
lbajardsilogic@0: 
lbajardsilogic@0: /*
lbajardsilogic@0:     Sonic Visualiser
lbajardsilogic@0:     An audio file viewer and annotation editor.
lbajardsilogic@0:     Centre for Digital Music, Queen Mary, University of London.
lbajardsilogic@0:     This file copyright 2007 QMUL.
lbajardsilogic@0:     
lbajardsilogic@0:     This program is free software; you can redistribute it and/or
lbajardsilogic@0:     modify it under the terms of the GNU General Public License as
lbajardsilogic@0:     published by the Free Software Foundation; either version 2 of the
lbajardsilogic@0:     License, or (at your option) any later version.  See the file
lbajardsilogic@0:     COPYING included with this distribution for more information.
lbajardsilogic@0: */
lbajardsilogic@0: 
lbajardsilogic@0: #include "TipDialog.h"
lbajardsilogic@0: 
lbajardsilogic@0: #include <QLabel>
lbajardsilogic@0: #include <QPushButton>
lbajardsilogic@0: #include <QSettings>
lbajardsilogic@0: #include <QLabel>
lbajardsilogic@0: #include <QLocale>
lbajardsilogic@0: #include <QXmlInputSource>
lbajardsilogic@0: #include <QFileInfo>
lbajardsilogic@0: #include <QGridLayout>
lbajardsilogic@0: #include <QGroupBox>
lbajardsilogic@0: #include <QCheckBox>
lbajardsilogic@0: 
lbajardsilogic@0: #include <iostream>
lbajardsilogic@0: 
lbajardsilogic@0: TipDialog::TipDialog(QWidget *parent, Qt::WFlags flags) :
lbajardsilogic@0:     QDialog(parent, flags),
lbajardsilogic@0:     m_tipNumber(0),
lbajardsilogic@0:     m_label(0),
lbajardsilogic@0:     m_caption(tr("Tip of the Day"))
lbajardsilogic@0: {
lbajardsilogic@0:     readTips();
lbajardsilogic@0: 
lbajardsilogic@0:     QSettings settings;
lbajardsilogic@0:     settings.beginGroup("TipOfTheDay");
lbajardsilogic@0: 
lbajardsilogic@0:     if (!settings.value("showonstartup", true).toBool()) return;
lbajardsilogic@0: 
lbajardsilogic@0:     m_tipNumber = settings.value("nexttip", 0).toInt();
lbajardsilogic@0: 
lbajardsilogic@0:     setWindowTitle(m_caption);
lbajardsilogic@0: 
lbajardsilogic@0:     QGridLayout *grid = new QGridLayout;
lbajardsilogic@0:     setLayout(grid);
lbajardsilogic@0:     
lbajardsilogic@0:     QGroupBox *groupBox = new QGroupBox;
lbajardsilogic@0: //    groupBox->setTitle(m_caption);
lbajardsilogic@0:     grid->addWidget(groupBox, 0, 0);
lbajardsilogic@0:     
lbajardsilogic@0:     QGridLayout *subgrid = new QGridLayout;
lbajardsilogic@0:     groupBox->setLayout(subgrid);
lbajardsilogic@0: 
lbajardsilogic@0:     m_label = new QLabel;
lbajardsilogic@0:     subgrid->addWidget(m_label, 0, 0);
lbajardsilogic@0:     m_label->setWordWrap(true);
lbajardsilogic@0: 
lbajardsilogic@0:     QHBoxLayout *hbox = new QHBoxLayout;
lbajardsilogic@0:     grid->addLayout(hbox, 1, 0);
lbajardsilogic@0: 
lbajardsilogic@0:     QCheckBox *show = new QCheckBox(tr("Show tip on startup"));
lbajardsilogic@0:     hbox->addWidget(show);
lbajardsilogic@0: 
lbajardsilogic@0:     hbox->addSpacing(20);
lbajardsilogic@0:     hbox->addStretch(10);
lbajardsilogic@0:     
lbajardsilogic@0:     QPushButton *prev = new QPushButton(tr("<< Previous"));
lbajardsilogic@0:     hbox->addWidget(prev);
lbajardsilogic@0:     connect(prev, SIGNAL(clicked()), this, SLOT(previous()));
lbajardsilogic@0:     
lbajardsilogic@0:     QPushButton *next = new QPushButton(tr("Next >>"));
lbajardsilogic@0:     hbox->addWidget(next);
lbajardsilogic@0:     connect(next, SIGNAL(clicked()), this, SLOT(next()));
lbajardsilogic@0:     
lbajardsilogic@0:     QPushButton *close = new QPushButton(tr("Close"));
lbajardsilogic@0:     hbox->addWidget(close);
lbajardsilogic@0:     connect(close, SIGNAL(clicked()), this, SLOT(accept()));
lbajardsilogic@0:     
lbajardsilogic@0:     close->setDefault(true);
lbajardsilogic@0: 
lbajardsilogic@0:     showTip();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: TipDialog::~TipDialog()
lbajardsilogic@0: {
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: TipDialog::next()
lbajardsilogic@0: {
lbajardsilogic@0:     if (++m_tipNumber >= int(m_tips.size())) {
lbajardsilogic@0:         //!!! The tips file should define where we loop back to -- the
lbajardsilogic@0:         // first one at least is likely to be a generic welcome message
lbajardsilogic@0:         m_tipNumber = 0;
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     showTip();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: TipDialog::previous()
lbajardsilogic@0: {
lbajardsilogic@0:     if (--m_tipNumber < 0) {
lbajardsilogic@0:         m_tipNumber = m_tips.size() - 1;
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     showTip();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: TipDialog::readTips()
lbajardsilogic@0: {
lbajardsilogic@0:     std::cerr << "TipDialog::readTips" << std::endl;
lbajardsilogic@0: 
lbajardsilogic@0:     QString language = QLocale::system().name();
lbajardsilogic@0:     QString filename = QString(":i18n/tips_%1.xml").arg(language);
lbajardsilogic@0: 
lbajardsilogic@0:     if (!QFileInfo(filename).exists()) {
lbajardsilogic@0: 
lbajardsilogic@0:         QString base = language.section('_', 0, 0);
lbajardsilogic@0:         filename = QString(":i18n/tips_%1.xml").arg(base);
lbajardsilogic@0: 
lbajardsilogic@0:         if (!QFileInfo(filename).exists()) {
lbajardsilogic@0: 
lbajardsilogic@0:             filename = QString(":i18n/tips.xml");
lbajardsilogic@0: 
lbajardsilogic@0:             if (!QFileInfo(filename).exists()) return;
lbajardsilogic@0:         }
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     QFile file(filename);
lbajardsilogic@0: 
lbajardsilogic@0:     std::cerr << "TipDialog::readTips from " << filename.toStdString() << std::endl;
lbajardsilogic@0: 
lbajardsilogic@0:     QXmlInputSource source(&file);
lbajardsilogic@0:     
lbajardsilogic@0:     TipFileParser parser(this);
lbajardsilogic@0:     parser.parse(source);
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: TipDialog::showTip()
lbajardsilogic@0: {
lbajardsilogic@0:     if (m_tipNumber < int(m_tips.size())) {
lbajardsilogic@0:         std::cerr << "Tip " << m_tipNumber << " is: " << m_tips[m_tipNumber].toStdString() << std::endl;
lbajardsilogic@0:         m_label->setText(m_tips[m_tipNumber]);
lbajardsilogic@0:     } else {
lbajardsilogic@0:         accept();
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     int tn = m_tipNumber;
lbajardsilogic@0:     if (++tn >= int(m_tips.size())) tn = 0; //!!! as above
lbajardsilogic@0: 
lbajardsilogic@0:     QSettings settings;
lbajardsilogic@0:     settings.beginGroup("TipOfTheDay");
lbajardsilogic@0:     settings.setValue("nexttip", tn);
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: TipDialog::TipFileParser::TipFileParser(TipDialog *dialog) :
lbajardsilogic@0:     m_dialog(dialog),
lbajardsilogic@0:     m_inTip(false),
lbajardsilogic@0:     m_inText(false),
lbajardsilogic@0:     m_inHtml(false)
lbajardsilogic@0: {
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: TipDialog::TipFileParser::~TipFileParser()
lbajardsilogic@0: {
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: TipDialog::TipFileParser::parse(QXmlInputSource &source)
lbajardsilogic@0: {
lbajardsilogic@0:     QXmlSimpleReader reader;
lbajardsilogic@0:     reader.setContentHandler(this);
lbajardsilogic@0:     reader.setErrorHandler(this);
lbajardsilogic@0:     reader.parse(source);
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: bool
lbajardsilogic@0: TipDialog::TipFileParser::startElement(const QString &, const QString &,
lbajardsilogic@0:                                        const QString &qName,
lbajardsilogic@0:                                        const QXmlAttributes &attributes)
lbajardsilogic@0: {
lbajardsilogic@0:     QString name = qName.toLower();
lbajardsilogic@0: 
lbajardsilogic@0:     std::cerr << "TipFileParser::startElement(" << name.toStdString() << ")" << std::endl;
lbajardsilogic@0: 
lbajardsilogic@0:     if (name == "tips") {
lbajardsilogic@0:         QString caption = attributes.value("caption");
lbajardsilogic@0:         std::cerr << "TipFileParser::caption = " << caption.toStdString() << std::endl;
lbajardsilogic@0:         if (caption != "") m_dialog->m_caption = caption;
lbajardsilogic@0:     } else if (name == "tip") {
lbajardsilogic@0:         if (m_inTip) {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: nested <tip> elements" << std::endl;
lbajardsilogic@0:         }
lbajardsilogic@0:         m_inTip = true;
lbajardsilogic@0:     } else if (name == "text") {
lbajardsilogic@0:         if (m_inTip) {
lbajardsilogic@0:             m_inText = true;
lbajardsilogic@0:             std::cerr << "TipFileParser: adding new tip" << std::endl;
lbajardsilogic@0:             m_dialog->m_tips.push_back("");
lbajardsilogic@0:         } else {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: <text> outside <tip> element" << std::endl;
lbajardsilogic@0:         }
lbajardsilogic@0:     } else if (name == "html") {
lbajardsilogic@0:         if (m_inTip) {
lbajardsilogic@0:             m_inHtml = true;
lbajardsilogic@0:             std::cerr << "TipFileParser: adding new tip" << std::endl;
lbajardsilogic@0:             m_dialog->m_tips.push_back("");
lbajardsilogic@0:         } else {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: <html> outside <tip> element" << std::endl;
lbajardsilogic@0:         }
lbajardsilogic@0:     } else if (m_inHtml) {
lbajardsilogic@0:         m_dialog->m_tips[m_dialog->m_tips.size()-1] += "<" + qName;
lbajardsilogic@0:         for (int i = 0; i < attributes.count(); ++i) {
lbajardsilogic@0:             m_dialog->m_tips[m_dialog->m_tips.size()-1] += 
lbajardsilogic@0:                 " " + attributes.qName(i) + "=\"" + attributes.value(i) + "\"";
lbajardsilogic@0:         }
lbajardsilogic@0:         m_dialog->m_tips[m_dialog->m_tips.size()-1] += ">";
lbajardsilogic@0:     }
lbajardsilogic@0:     
lbajardsilogic@0:     std::cerr << "TipFileParser::startElement done" << std::endl;
lbajardsilogic@0:     return true;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: bool
lbajardsilogic@0: TipDialog::TipFileParser::endElement(const QString &, const QString &,
lbajardsilogic@0:                                      const QString &qName)
lbajardsilogic@0: {
lbajardsilogic@0:     QString name = qName.toLower();
lbajardsilogic@0: 
lbajardsilogic@0:     if (name == "text") {
lbajardsilogic@0:         if (!m_inText) {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: </text> without <text>" << std::endl;
lbajardsilogic@0:         }
lbajardsilogic@0:         m_inText = false;
lbajardsilogic@0:     } else if (name == "html") {
lbajardsilogic@0:         if (!m_inHtml) {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: </html> without <html>" << std::endl;
lbajardsilogic@0:         }
lbajardsilogic@0:         m_inHtml = false;
lbajardsilogic@0:     } else if (name == "tip") {
lbajardsilogic@0:         if (m_inText) {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: <text> without </text>" << std::endl;
lbajardsilogic@0:         } else if (m_inHtml) {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: <html> without </html>" << std::endl;
lbajardsilogic@0:         } else if (!m_inTip) {
lbajardsilogic@0:             std::cerr << "WARNING: TipFileParser: </tip> without <tip>" << std::endl;
lbajardsilogic@0:         }
lbajardsilogic@0:         m_inTip = false;
lbajardsilogic@0:     } else if (m_inHtml) {
lbajardsilogic@0:         m_dialog->m_tips[m_dialog->m_tips.size()-1] += "</" + qName + ">";
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     return true;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: bool
lbajardsilogic@0: TipDialog::TipFileParser::characters(const QString &text)
lbajardsilogic@0: {
lbajardsilogic@0:     std::cerr << "TipFileParser::characters(" << text.toStdString() << ")" << std::endl;
lbajardsilogic@0: 
lbajardsilogic@0:     if (m_inText || m_inHtml) {
lbajardsilogic@0:         m_dialog->m_tips[m_dialog->m_tips.size()-1] += text;
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     return true;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: bool
lbajardsilogic@0: TipDialog::TipFileParser::error(const QXmlParseException &exception)
lbajardsilogic@0: {
lbajardsilogic@0:     QString errorString =
lbajardsilogic@0: 	QString("ERROR: TipFileParser: %1 at line %2, column %3")
lbajardsilogic@0: 	.arg(exception.message())
lbajardsilogic@0: 	.arg(exception.lineNumber())
lbajardsilogic@0: 	.arg(exception.columnNumber());
lbajardsilogic@0:     std::cerr << errorString.toStdString() << std::endl;
lbajardsilogic@0:     return QXmlDefaultHandler::error(exception);
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: bool
lbajardsilogic@0: TipDialog::TipFileParser::fatalError(const QXmlParseException &exception)
lbajardsilogic@0: {
lbajardsilogic@0:     QString errorString =
lbajardsilogic@0: 	QString("FATAL ERROR: TipFileParser: %1 at line %2, column %3")
lbajardsilogic@0: 	.arg(exception.message())
lbajardsilogic@0: 	.arg(exception.lineNumber())
lbajardsilogic@0: 	.arg(exception.columnNumber());
lbajardsilogic@0:     std::cerr << errorString.toStdString() << std::endl;
lbajardsilogic@0:     return QXmlDefaultHandler::fatalError(exception);
lbajardsilogic@0: }