400 lines
12 KiB
C++
400 lines
12 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore>
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#include <QtGui>
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#include <QtNetwork>
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#include "ui_form.h"
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#define FLIGHTVIEW_URL "http://mobile.flightview.com/TrackByFlight.aspx"
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#define FLIGHTVIEW_RANDOM "http://mobile.flightview.com/TrackSampleFlight.aspx"
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// strips all invalid constructs that might trip QXmlStreamReader
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static QString sanitized(const QString &xml)
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{
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QString data = xml;
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// anything up to the html tag
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int i = data.indexOf("<html");
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if (i > 0)
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data.remove(0, i - 1);
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// everything inside the head tag
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i = data.indexOf("<head");
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if (i > 0)
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data.remove(i, data.indexOf("</head>") - i + 7);
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// invalid link for JavaScript code
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while (true) {
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i = data.indexOf("onclick=\"gotoUrl(");
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if (i < 0)
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break;
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data.remove(i, data.indexOf('\"', i + 9) - i + 1);
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}
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// all inline frames
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while (true) {
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i = data.indexOf("<iframe");
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if (i < 0)
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break;
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data.remove(i, data.indexOf("</iframe>") - i + 8);
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}
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// entities
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data.remove(" ");
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data.remove("©");
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return data;
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}
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class FlightInfo : public QMainWindow
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{
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Q_OBJECT
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private:
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Ui_Form ui;
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QUrl m_url;
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QDate m_searchDate;
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QPixmap m_map;
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QNetworkAccessManager m_manager;
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QList<QNetworkReply *> mapReplies;
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public:
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FlightInfo(QMainWindow *parent = 0): QMainWindow(parent) {
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QWidget *w = new QWidget(this);
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ui.setupUi(w);
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setCentralWidget(w);
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ui.searchBar->hide();
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ui.infoBox->hide();
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connect(ui.searchButton, SIGNAL(clicked()), SLOT(startSearch()));
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connect(ui.flightEdit, SIGNAL(returnPressed()), SLOT(startSearch()));
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setWindowTitle("Flight Info");
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// Rendered from the public-domain vectorized aircraft
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// http://openclipart.org/media/people/Jarno
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m_map = QPixmap(":/aircraft.png");
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QAction *searchTodayAction = new QAction("Today's Flight", this);
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QAction *searchYesterdayAction = new QAction("Yesterday's Flight", this);
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QAction *randomAction = new QAction("Random Flight", this);
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connect(searchTodayAction, SIGNAL(triggered()), SLOT(today()));
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connect(searchYesterdayAction, SIGNAL(triggered()), SLOT(yesterday()));
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connect(randomAction, SIGNAL(triggered()), SLOT(randomFlight()));
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connect(&m_manager, SIGNAL(finished(QNetworkReply*)),
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this, SLOT(handleNetworkData(QNetworkReply*)));
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#if defined(Q_OS_SYMBIAN)
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menuBar()->addAction(searchTodayAction);
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menuBar()->addAction(searchYesterdayAction);
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menuBar()->addAction(randomAction);
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#else
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addAction(searchTodayAction);
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addAction(searchYesterdayAction);
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addAction(randomAction);
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setContextMenuPolicy(Qt::ActionsContextMenu);
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#endif
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}
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private slots:
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void handleNetworkData(QNetworkReply *networkReply) {
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if (!networkReply->error()) {
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if (!mapReplies.contains(networkReply)) {
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// Assume UTF-8 encoded
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QByteArray data = networkReply->readAll();
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QString xml = QString::fromUtf8(data);
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digest(xml);
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} else {
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mapReplies.removeOne(networkReply);
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m_map.loadFromData(networkReply->readAll());
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update();
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}
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}
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networkReply->deleteLater();
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}
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void today() {
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QDateTime timestamp = QDateTime::currentDateTime();
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m_searchDate = timestamp.date();
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searchFlight();
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}
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void yesterday() {
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QDateTime timestamp = QDateTime::currentDateTime();
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timestamp = timestamp.addDays(-1);
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m_searchDate = timestamp.date();
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searchFlight();
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}
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void searchFlight() {
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ui.searchBar->show();
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ui.infoBox->hide();
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ui.flightStatus->hide();
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ui.flightName->setText("Enter flight number");
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ui.flightEdit->setFocus();
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#ifdef QT_KEYPAD_NAVIGATION
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ui.flightEdit->setEditFocus(true);
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#endif
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m_map = QPixmap();
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update();
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}
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void startSearch() {
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ui.searchBar->hide();
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QString flight = ui.flightEdit->text().simplified();
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if (!flight.isEmpty())
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request(flight, m_searchDate);
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}
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void randomFlight() {
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request(QString(), QDate::currentDate());
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}
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public slots:
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void request(const QString &flightCode, const QDate &date) {
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setWindowTitle("Loading...");
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QString code = flightCode.simplified();
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QString airlineCode = code.left(2).toUpper();
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QString flightNumber = code.mid(2, code.length());
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ui.flightName->setText("Searching for " + code);
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m_url = QUrl(FLIGHTVIEW_URL);
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m_url.addEncodedQueryItem("view", "detail");
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m_url.addEncodedQueryItem("al", QUrl::toPercentEncoding(airlineCode));
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m_url.addEncodedQueryItem("fn", QUrl::toPercentEncoding(flightNumber));
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m_url.addEncodedQueryItem("dpdat", QUrl::toPercentEncoding(date.toString("yyyyMMdd")));
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if (code.isEmpty()) {
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// random flight as sample
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m_url = QUrl(FLIGHTVIEW_RANDOM);
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ui.flightName->setText("Getting a random flight...");
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}
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m_manager.get(QNetworkRequest(m_url));
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}
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private:
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void digest(const QString &content) {
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setWindowTitle("Flight Info");
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QString data = sanitized(content);
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// do we only get the flight list?
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// we grab the first leg in the flight list
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// then fetch another URL for the real flight info
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int i = data.indexOf("a href=\"?view=detail");
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if (i > 0) {
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QString href = data.mid(i, data.indexOf('\"', i + 8) - i + 1);
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QRegExp regex("dpap=([A-Za-z0-9]+)");
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regex.indexIn(href);
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QString airport = regex.cap(1);
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m_url.addEncodedQueryItem("dpap", QUrl::toPercentEncoding(airport));
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m_manager.get(QNetworkRequest(m_url));
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return;
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}
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QXmlStreamReader xml(data);
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bool inFlightName = false;
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bool inFlightStatus = false;
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bool inFlightMap = false;
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bool inFieldName = false;
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bool inFieldValue = false;
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QString flightName;
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QString flightStatus;
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QStringList fieldNames;
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QStringList fieldValues;
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while (!xml.atEnd()) {
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xml.readNext();
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if (xml.tokenType() == QXmlStreamReader::StartElement) {
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QStringRef className = xml.attributes().value("class");
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inFlightName |= xml.name() == "h1";
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inFlightStatus |= className == "FlightDetailHeaderStatus";
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inFlightMap |= className == "flightMap";
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if (xml.name() == "td" && !className.isEmpty()) {
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QString cn = className.toString();
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if (cn.contains("fieldTitle")) {
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inFieldName = true;
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fieldNames += QString();
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fieldValues += QString();
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}
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if (cn.contains("fieldValue"))
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inFieldValue = true;
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}
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if (xml.name() == "img" && inFlightMap) {
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QString src = xml.attributes().value("src").toString();
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src.prepend("http://mobile.flightview.com/");
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QUrl url = QUrl::fromPercentEncoding(src.toAscii());
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mapReplies.append(m_manager.get(QNetworkRequest(url)));
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}
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}
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if (xml.tokenType() == QXmlStreamReader::EndElement) {
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inFlightName &= xml.name() != "h1";
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inFlightStatus &= xml.name() != "div";
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inFlightMap &= xml.name() != "div";
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inFieldName &= xml.name() != "td";
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inFieldValue &= xml.name() != "td";
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}
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if (xml.tokenType() == QXmlStreamReader::Characters) {
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if (inFlightName)
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flightName += xml.text();
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if (inFlightStatus)
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flightStatus += xml.text();
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if (inFieldName)
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fieldNames.last() += xml.text();
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if (inFieldValue)
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fieldValues.last() += xml.text();
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}
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}
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if (fieldNames.isEmpty()) {
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QString code = ui.flightEdit->text().simplified().left(10);
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QString msg = QString("Flight %1 is not found").arg(code);
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ui.flightName->setText(msg);
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return;
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}
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ui.flightName->setText(flightName);
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flightStatus.remove("Status: ");
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ui.flightStatus->setText(flightStatus);
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ui.flightStatus->show();
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QStringList whiteList;
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whiteList << "Departure";
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whiteList << "Arrival";
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whiteList << "Scheduled";
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whiteList << "Takeoff";
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whiteList << "Estimated";
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whiteList << "Term-Gate";
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QString text;
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text = QString("<table width=%1>").arg(width() - 25);
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for (int i = 0; i < fieldNames.count(); i++) {
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QString fn = fieldNames[i].simplified();
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if (fn.endsWith(':'))
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fn = fn.left(fn.length() - 1);
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if (!whiteList.contains(fn))
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continue;
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QString fv = fieldValues[i].simplified();
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bool special = false;
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special |= fn.startsWith("Departure");
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special |= fn.startsWith("Arrival");
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text += "<tr>";
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if (special) {
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text += "<td align=center colspan=2>";
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text += "<b><font size=+1>" + fv + "</font></b>";
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text += "</td>";
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} else {
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text += "<td align=right>";
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text += fn;
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text += " : ";
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text += " ";
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text += "</td>";
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text += "<td>";
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text += fv;
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text += "</td>";
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}
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text += "</tr>";
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}
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text += "</table>";
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ui.detailedInfo->setText(text);
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ui.infoBox->show();
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}
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void resizeEvent(QResizeEvent *event) {
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Q_UNUSED(event);
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ui.detailedInfo->setMaximumWidth(width() - 25);
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}
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void paintEvent(QPaintEvent *event) {
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QMainWindow::paintEvent(event);
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QPainter p(this);
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p.fillRect(rect(), QColor(131, 171, 210));
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if (!m_map.isNull()) {
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int x = (width() - m_map.width()) / 2;
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int space = ui.infoBox->pos().y();
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if (!ui.infoBox->isVisible())
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space = height();
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int top = ui.titleBox->height();
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int y = qMax(top, (space - m_map.height()) / 2);
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p.drawPixmap(x, y, m_map);
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}
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p.end();
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}
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};
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#include "flightinfo.moc"
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int main(int argc, char **argv)
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{
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Q_INIT_RESOURCE(flightinfo);
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QApplication app(argc, argv);
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FlightInfo w;
|
||
|
|
#if defined(Q_OS_SYMBIAN)
|
||
|
|
w.showMaximized();
|
||
|
|
#else
|
||
|
|
w.resize(360, 504);
|
||
|
|
w.show();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return app.exec();
|
||
|
|
}
|