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qt5base-lts/examples/embedded/flightinfo/flightinfo.cpp
Jani Heikkinen 83a5694dc2 Update copyright headers 
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.

Outdated header.LGPL removed (use header.LGPL21 instead)

Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)

Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination

Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
2015-02-11 06:49:51 +00:00

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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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("&nbsp;");
data.remove("&copy;");
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, const 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);
QRegExp regex("dpap=([A-Za-z0-9]+)");
regex.indexIn(href);
QString airport = regex.cap(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()) {
QString cn = className.toString();
if (cn.contains("fieldTitle")) {
inFieldName = true;
fieldNames += QString();
fieldValues += QString();
}
if (cn.contains("fieldValue"))
inFieldValue = true;
}
if (xml.name() == "img" && inFlightMap) {
QString src = xml.attributes().value("src").toString();
src.prepend("http://mobile.flightview.com/");
QUrl url = QUrl::fromPercentEncoding(src.toLatin1());
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 += "&nbsp;";
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();
}
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