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| ** This file is part of the demonstration applications of the Qt Toolkit. |
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| |
| #include <QtCore> |
| #include <QtWidgets> |
| #include <QtNetwork> |
| |
| #include "ui_form.h" |
| |
| #define FLIGHTVIEW_URL "http://mobile.flightview.com/TrackByFlight.aspx" |
| #define FLIGHTVIEW_RANDOM "http://mobile.flightview.com/TrackSampleFlight.aspx" |
| |
| // strips all invalid constructs that might trip QXmlStreamReader |
| static QString sanitized(const QString &xml) |
| { |
| QString data = xml; |
| |
| // anything up to the html tag |
| int i = data.indexOf("<html"); |
| if (i > 0) |
| data.remove(0, i - 1); |
| |
| // everything inside the head tag |
| i = data.indexOf("<head"); |
| if (i > 0) |
| data.remove(i, data.indexOf("</head>") - i + 7); |
| |
| // invalid link for JavaScript code |
| while (true) { |
| i = data.indexOf("onclick=\"gotoUrl("); |
| if (i < 0) |
| break; |
| data.remove(i, data.indexOf('\"', i + 9) - i + 1); |
| } |
| |
| // all inline frames |
| while (true) { |
| i = data.indexOf("<iframe"); |
| if (i < 0) |
| break; |
| data.remove(i, data.indexOf("</iframe>") - i + 8); |
| } |
| |
| // entities |
| data.remove(" "); |
| data.remove("©"); |
| |
| return data; |
| } |
| |
| class FlightInfo : public QMainWindow |
| { |
| Q_OBJECT |
| |
| private: |
| |
| Ui_Form ui; |
| QUrl m_url; |
| QDate m_searchDate; |
| QPixmap m_map; |
| QNetworkAccessManager m_manager; |
| QList<QNetworkReply *> mapReplies; |
| |
| public: |
| |
| FlightInfo(QMainWindow *parent = 0): QMainWindow(parent) { |
| |
| QWidget *w = new QWidget(this); |
| ui.setupUi(w); |
| setCentralWidget(w); |
| |
| ui.searchBar->hide(); |
| ui.infoBox->hide(); |
| connect(ui.searchButton, SIGNAL(clicked()), SLOT(startSearch())); |
| connect(ui.flightEdit, SIGNAL(returnPressed()), SLOT(startSearch())); |
| |
| setWindowTitle("Flight Info"); |
| |
| // Rendered from the public-domain vectorized aircraft |
| // http://openclipart.org/media/people/Jarno |
| m_map = QPixmap(":/aircraft.png"); |
| |
| QAction *searchTodayAction = new QAction("Today's Flight", this); |
| QAction *searchYesterdayAction = new QAction("Yesterday's Flight", this); |
| QAction *randomAction = new QAction("Random Flight", this); |
| connect(searchTodayAction, SIGNAL(triggered()), SLOT(today())); |
| connect(searchYesterdayAction, SIGNAL(triggered()), SLOT(yesterday())); |
| connect(randomAction, SIGNAL(triggered()), SLOT(randomFlight())); |
| connect(&m_manager, SIGNAL(finished(QNetworkReply*)), |
| this, SLOT(handleNetworkData(QNetworkReply*))); |
| addAction(searchTodayAction); |
| addAction(searchYesterdayAction); |
| addAction(randomAction); |
| setContextMenuPolicy(Qt::ActionsContextMenu); |
| } |
| |
| private slots: |
| |
| void handleNetworkData(QNetworkReply *networkReply) { |
| if (!networkReply->error()) { |
| if (!mapReplies.contains(networkReply)) { |
| // Assume UTF-8 encoded |
| QByteArray data = networkReply->readAll(); |
| QString xml = QString::fromUtf8(data); |
| digest(xml); |
| } else { |
| mapReplies.removeOne(networkReply); |
| m_map.loadFromData(networkReply->readAll()); |
| update(); |
| } |
| } |
| networkReply->deleteLater(); |
| } |
| |
| void today() { |
| QDateTime timestamp = QDateTime::currentDateTime(); |
| m_searchDate = timestamp.date(); |
| searchFlight(); |
| } |
| |
| void yesterday() { |
| QDateTime timestamp = QDateTime::currentDateTime(); |
| timestamp = timestamp.addDays(-1); |
| m_searchDate = timestamp.date(); |
| searchFlight(); |
| } |
| |
| void searchFlight() { |
| ui.searchBar->show(); |
| ui.infoBox->hide(); |
| ui.flightStatus->hide(); |
| ui.flightName->setText("Enter flight number"); |
| ui.flightEdit->setFocus(); |
| #ifdef QT_KEYPAD_NAVIGATION |
| ui.flightEdit->setEditFocus(true); |
| #endif |
| m_map = QPixmap(); |
| update(); |
| } |
| |
| void startSearch() { |
| ui.searchBar->hide(); |
| QString flight = ui.flightEdit->text().simplified(); |
| if (!flight.isEmpty()) |
| request(flight, m_searchDate); |
| } |
| |
| void randomFlight() { |
| request(QString(), QDate::currentDate()); |
| } |
| |
| public slots: |
| |
| void request(const QString &flightCode, QDate date) { |
| |
| setWindowTitle("Loading..."); |
| |
| QString code = flightCode.simplified(); |
| QString airlineCode = code.left(2).toUpper(); |
| QString flightNumber = code.mid(2, code.length()); |
| |
| ui.flightName->setText("Searching for " + code); |
| |
| QUrlQuery query; |
| query.addQueryItem("view", "detail"); |
| query.addQueryItem("al", airlineCode); |
| query.addQueryItem("fn", flightNumber); |
| query.addQueryItem("dpdat", date.toString("yyyyMMdd")); |
| m_url = QUrl(FLIGHTVIEW_URL); |
| m_url.setQuery(query); |
| |
| if (code.isEmpty()) { |
| // random flight as sample |
| m_url = QUrl(FLIGHTVIEW_RANDOM); |
| ui.flightName->setText("Getting a random flight..."); |
| } |
| |
| m_manager.get(QNetworkRequest(m_url)); |
| } |
| |
| |
| private: |
| |
| void digest(const QString &content) { |
| |
| setWindowTitle("Flight Info"); |
| QString data = sanitized(content); |
| |
| // do we only get the flight list? |
| // we grab the first leg in the flight list |
| // then fetch another URL for the real flight info |
| int i = data.indexOf("a href=\"?view=detail"); |
| if (i > 0) { |
| QString href = data.mid(i, data.indexOf('\"', i + 8) - i + 1); |
| QRegularExpression regex("dpap=([A-Za-z0-9]+)"); |
| QRegularExpressionMatch match = regex.match(href); |
| QString airport = match.captured(1); |
| QUrlQuery query(m_url); |
| query.addQueryItem("dpap", airport); |
| m_url.setQuery(query); |
| m_manager.get(QNetworkRequest(m_url)); |
| return; |
| } |
| |
| QXmlStreamReader xml(data); |
| bool inFlightName = false; |
| bool inFlightStatus = false; |
| bool inFlightMap = false; |
| bool inFieldName = false; |
| bool inFieldValue = false; |
| |
| QString flightName; |
| QString flightStatus; |
| QStringList fieldNames; |
| QStringList fieldValues; |
| |
| while (!xml.atEnd()) { |
| xml.readNext(); |
| |
| if (xml.tokenType() == QXmlStreamReader::StartElement) { |
| QStringRef className = xml.attributes().value("class"); |
| inFlightName |= xml.name() == "h1"; |
| inFlightStatus |= className == "FlightDetailHeaderStatus"; |
| inFlightMap |= className == "flightMap"; |
| if (xml.name() == "td" && !className.isEmpty()) { |
| if (className.contains("fieldTitle")) { |
| inFieldName = true; |
| fieldNames += QString(); |
| fieldValues += QString(); |
| } |
| if (className.contains("fieldValue")) |
| inFieldValue = true; |
| } |
| if (xml.name() == "img" && inFlightMap) { |
| const QByteArray encoded |
| = ("http://mobile.flightview.com/" % xml.attributes().value("src")).toLatin1(); |
| QUrl url = QUrl::fromPercentEncoding(encoded); |
| mapReplies.append(m_manager.get(QNetworkRequest(url))); |
| } |
| } |
| |
| if (xml.tokenType() == QXmlStreamReader::EndElement) { |
| inFlightName &= xml.name() != "h1"; |
| inFlightStatus &= xml.name() != "div"; |
| inFlightMap &= xml.name() != "div"; |
| inFieldName &= xml.name() != "td"; |
| inFieldValue &= xml.name() != "td"; |
| } |
| |
| if (xml.tokenType() == QXmlStreamReader::Characters) { |
| if (inFlightName) |
| flightName += xml.text(); |
| if (inFlightStatus) |
| flightStatus += xml.text(); |
| if (inFieldName) |
| fieldNames.last() += xml.text(); |
| if (inFieldValue) |
| fieldValues.last() += xml.text(); |
| } |
| } |
| |
| if (fieldNames.isEmpty()) { |
| QString code = ui.flightEdit->text().simplified().left(10); |
| QString msg = QString("Flight %1 is not found").arg(code); |
| ui.flightName->setText(msg); |
| return; |
| } |
| |
| ui.flightName->setText(flightName); |
| flightStatus.remove("Status: "); |
| ui.flightStatus->setText(flightStatus); |
| ui.flightStatus->show(); |
| |
| QStringList whiteList; |
| whiteList << "Departure"; |
| whiteList << "Arrival"; |
| whiteList << "Scheduled"; |
| whiteList << "Takeoff"; |
| whiteList << "Estimated"; |
| whiteList << "Term-Gate"; |
| |
| QString text; |
| text = QString("<table width=%1>").arg(width() - 25); |
| for (int i = 0; i < fieldNames.count(); i++) { |
| QString fn = fieldNames[i].simplified(); |
| if (fn.endsWith(':')) |
| fn = fn.left(fn.length() - 1); |
| if (!whiteList.contains(fn)) |
| continue; |
| |
| QString fv = fieldValues[i].simplified(); |
| bool special = false; |
| special |= fn.startsWith("Departure"); |
| special |= fn.startsWith("Arrival"); |
| text += "<tr>"; |
| if (special) { |
| text += "<td align=center colspan=2>"; |
| text += "<b><font size=+1>" + fv + "</font></b>"; |
| text += "</td>"; |
| } else { |
| text += "<td align=right>"; |
| text += fn; |
| text += " : "; |
| text += " "; |
| text += "</td>"; |
| text += "<td>"; |
| text += fv; |
| text += "</td>"; |
| } |
| text += "</tr>"; |
| } |
| text += "</table>"; |
| ui.detailedInfo->setText(text); |
| ui.infoBox->show(); |
| } |
| |
| void resizeEvent(QResizeEvent *event) { |
| Q_UNUSED(event); |
| ui.detailedInfo->setMaximumWidth(width() - 25); |
| } |
| |
| void paintEvent(QPaintEvent *event) { |
| QMainWindow::paintEvent(event); |
| QPainter p(this); |
| p.fillRect(rect(), QColor(131, 171, 210)); |
| if (!m_map.isNull()) { |
| int x = (width() - m_map.width()) / 2; |
| int space = ui.infoBox->pos().y(); |
| if (!ui.infoBox->isVisible()) |
| space = height(); |
| int top = ui.titleBox->height(); |
| int y = qMax(top, (space - m_map.height()) / 2); |
| p.drawPixmap(x, y, m_map); |
| } |
| p.end(); |
| } |
| |
| }; |
| |
| |
| #include "flightinfo.moc" |
| |
| int main(int argc, char **argv) |
| { |
| Q_INIT_RESOURCE(flightinfo); |
| |
| QApplication app(argc, argv); |
| |
| FlightInfo w; |
| w.resize(360, 504); |
| w.show(); |
| |
| return app.exec(); |
| } |