Mercurial > hg > svgui
view widgets/TipDialog.cpp @ 1363:bbeffb29bf09
Fix inconsistency between centre frame actually set and centre frame notified as set, which caused the start frame location to creep out of place gradually as you page through
author | Chris Cannam |
---|---|
date | Tue, 30 Oct 2018 14:00:20 +0000 |
parents | a34a2a25907c |
children | c8a6fd3f9dff |
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/* -*- 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 2007 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 "TipDialog.h" #include <QLabel> #include <QPushButton> #include <QSettings> #include <QLabel> #include <QLocale> #include <QXmlInputSource> #include <QFileInfo> #include <QGridLayout> #include <QGroupBox> #include <QCheckBox> #include <iostream> TipDialog::TipDialog(QWidget *parent) : QDialog(parent), m_tipNumber(0), m_label(0), m_caption(tr("Tip of the Day")) { readTips(); QSettings settings; settings.beginGroup("TipOfTheDay"); if (!settings.value("showonstartup", true).toBool()) return; m_tipNumber = settings.value("nexttip", 0).toInt(); setWindowTitle(m_caption); QGridLayout *grid = new QGridLayout; setLayout(grid); QGroupBox *groupBox = new QGroupBox; // groupBox->setTitle(m_caption); grid->addWidget(groupBox, 0, 0); QGridLayout *subgrid = new QGridLayout; groupBox->setLayout(subgrid); m_label = new QLabel; subgrid->addWidget(m_label, 0, 0); m_label->setWordWrap(true); QHBoxLayout *hbox = new QHBoxLayout; grid->addLayout(hbox, 1, 0); QCheckBox *show = new QCheckBox(tr("Show tip on startup")); hbox->addWidget(show); hbox->addSpacing(20); hbox->addStretch(10); QPushButton *prev = new QPushButton(tr("<< Previous")); hbox->addWidget(prev); connect(prev, SIGNAL(clicked()), this, SLOT(previous())); QPushButton *next = new QPushButton(tr("Next >>")); hbox->addWidget(next); connect(next, SIGNAL(clicked()), this, SLOT(next())); QPushButton *close = new QPushButton(tr("Close")); hbox->addWidget(close); connect(close, SIGNAL(clicked()), this, SLOT(accept())); close->setDefault(true); showTip(); } TipDialog::~TipDialog() { } void TipDialog::next() { if (++m_tipNumber >= int(m_tips.size())) { //!!! The tips file should define where we loop back to -- the // first one at least is likely to be a generic welcome message m_tipNumber = 0; } showTip(); } void TipDialog::previous() { if (--m_tipNumber < 0) { m_tipNumber = int(m_tips.size()) - 1; } showTip(); } void TipDialog::readTips() { SVDEBUG << "TipDialog::readTips" << endl; QString language = QLocale::system().name(); QString filename = QString(":i18n/tips_%1.xml").arg(language); if (!QFileInfo(filename).exists()) { QString base = language.section('_', 0, 0); filename = QString(":i18n/tips_%1.xml").arg(base); if (!QFileInfo(filename).exists()) { filename = QString(":i18n/tips.xml"); if (!QFileInfo(filename).exists()) return; } } QFile file(filename); SVDEBUG << "TipDialog::readTips from " << filename << endl; QXmlInputSource source(&file); TipFileParser parser(this); parser.parse(source); } void TipDialog::showTip() { if (m_tipNumber < int(m_tips.size())) { cerr << "Tip " << m_tipNumber << " is: " << m_tips[m_tipNumber] << endl; m_label->setText(m_tips[m_tipNumber]); } else { accept(); } int tn = m_tipNumber; if (++tn >= int(m_tips.size())) tn = 0; //!!! as above QSettings settings; settings.beginGroup("TipOfTheDay"); settings.setValue("nexttip", tn); } TipDialog::TipFileParser::TipFileParser(TipDialog *dialog) : m_dialog(dialog), m_inTip(false), m_inText(false), m_inHtml(false) { } TipDialog::TipFileParser::~TipFileParser() { } void TipDialog::TipFileParser::parse(QXmlInputSource &source) { QXmlSimpleReader reader; reader.setContentHandler(this); reader.setErrorHandler(this); reader.parse(source); } bool TipDialog::TipFileParser::startElement(const QString &, const QString &, const QString &qName, const QXmlAttributes &attributes) { QString name = qName.toLower(); SVDEBUG << "TipFileParser::startElement(" << name << ")" << endl; if (name == "tips") { QString caption = attributes.value("caption"); SVDEBUG << "TipFileParser::caption = " << caption << endl; if (caption != "") m_dialog->m_caption = caption; } else if (name == "tip") { if (m_inTip) { cerr << "WARNING: TipFileParser: nested <tip> elements" << endl; } m_inTip = true; } else if (name == "text") { if (m_inTip) { m_inText = true; cerr << "TipFileParser: adding new tip" << endl; m_dialog->m_tips.push_back(""); } else { cerr << "WARNING: TipFileParser: <text> outside <tip> element" << endl; } } else if (name == "html") { if (m_inTip) { m_inHtml = true; cerr << "TipFileParser: adding new tip" << endl; m_dialog->m_tips.push_back(""); } else { cerr << "WARNING: TipFileParser: <html> outside <tip> element" << endl; } } else if (m_inHtml) { m_dialog->m_tips[m_dialog->m_tips.size()-1] += "<" + qName; for (int i = 0; i < attributes.count(); ++i) { m_dialog->m_tips[m_dialog->m_tips.size()-1] += " " + attributes.qName(i) + "=\"" + attributes.value(i) + "\""; } m_dialog->m_tips[m_dialog->m_tips.size()-1] += ">"; } SVDEBUG << "TipFileParser::startElement done" << endl; return true; } bool TipDialog::TipFileParser::endElement(const QString &, const QString &, const QString &qName) { QString name = qName.toLower(); if (name == "text") { if (!m_inText) { cerr << "WARNING: TipFileParser: </text> without <text>" << endl; } m_inText = false; } else if (name == "html") { if (!m_inHtml) { cerr << "WARNING: TipFileParser: </html> without <html>" << endl; } m_inHtml = false; } else if (name == "tip") { if (m_inText) { cerr << "WARNING: TipFileParser: <text> without </text>" << endl; } else if (m_inHtml) { cerr << "WARNING: TipFileParser: <html> without </html>" << endl; } else if (!m_inTip) { cerr << "WARNING: TipFileParser: </tip> without <tip>" << endl; } m_inTip = false; } else if (m_inHtml) { m_dialog->m_tips[m_dialog->m_tips.size()-1] += "</" + qName + ">"; } return true; } bool TipDialog::TipFileParser::characters(const QString &text) { SVDEBUG << "TipFileParser::characters(" << text << ")" << endl; if (m_inText || m_inHtml) { m_dialog->m_tips[m_dialog->m_tips.size()-1] += text; } return true; } bool TipDialog::TipFileParser::error(const QXmlParseException &exception) { QString errorString = QString("ERROR: TipFileParser: %1 at line %2, column %3") .arg(exception.message()) .arg(exception.lineNumber()) .arg(exception.columnNumber()); cerr << errorString << endl; return QXmlDefaultHandler::error(exception); } bool TipDialog::TipFileParser::fatalError(const QXmlParseException &exception) { QString errorString = QString("FATAL ERROR: TipFileParser: %1 at line %2, column %3") .arg(exception.message()) .arg(exception.lineNumber()) .arg(exception.columnNumber()); cerr << errorString << endl; return QXmlDefaultHandler::fatalError(exception); }