--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/flickrdemo/flickrdemo.cpp Fri Apr 16 15:51:22 2010 +0300
@@ -0,0 +1,608 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "flickrdemo.h"
+#include <QDomDocument>
+
+#include <qnmeapositioninfosource.h>
+#include <qgeopositioninfosource.h>
+#include <qgeosatelliteinfosource.h>
+#include <qgeopositioninfo.h>
+#include <qgeosatelliteinfo.h>
+#include <qnetworkconfigmanager.h>
+#include <qnetworksession.h>
+
+// static constant intialization
+
+const QSize FlickrDemo::gridSize = QSize(52, 52);
+const QSize FlickrDemo::thumbnailSize = QSize(50, 50);
+const QSize FlickrDemo::imageSize = QSize(150, 150);
+const QString FlickrDemo::apikey = QString("e36784df8a03fea04c22ed93318b291c");
+#ifdef Q_OS_SYMBIAN
+const QString FlickrDemo::savePath = "c:\\Data\\Images\\"; // In S60 Download images to Gallery
+#else
+const QString FlickrDemo::savePath = QDir::tempPath();
+#endif
+
+FlickrDemo::FlickrDemo(QWidget* parent) :
+ QMainWindow(parent),
+ m_logfileInUse(false),
+ m_session(0),
+ m_file(0),
+ m_httpGetId(-1),
+ m_httpThumbnailGetId(-1),
+ m_pages(0),
+ m_page(1),
+ m_satellitesInView(0),
+ m_satellitesUsed(0),
+ m_latitude(-1000),
+ m_longitude(-1000),
+ m_downloadPictureList(true),
+ m_downloadingThumbnails(false)
+{
+ resize(252, 344);
+
+ locationLabel = new QLabel(tr("Lat: Long:"));
+ satellitesLabel = new QLabel(tr("Using 0 of 0 satellites"));
+ listWidget = new XQListWidget();
+ downloadButton = new QPushButton(tr("Download Picture List"));
+
+ QVBoxLayout *verticalLayout = new QVBoxLayout();
+ verticalLayout->addWidget(locationLabel);
+ verticalLayout->addWidget(satellitesLabel);
+ verticalLayout->addWidget(listWidget);
+ verticalLayout->addWidget(downloadButton);
+
+ QWidget *centralWidget = new QWidget;
+ centralWidget->setLayout(verticalLayout);
+ setCentralWidget(centralWidget);
+
+ createMenus();
+ listWidget->setGridSize(gridSize);
+ listWidget->setIconSize(thumbnailSize);
+ m_progressDialog = new QProgressDialog(this);
+ m_progressDialog->setModal(true);
+ connect(m_progressDialog, SIGNAL(canceled()), this, SLOT(cancelDownload()));
+
+ setWindowTitle(tr("Flickr Demo"));
+
+ connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadButtonClicked()));
+
+ // QGeoPositionInfoSource
+ m_location = QGeoPositionInfoSource::createDefaultSource(this);
+
+ if (m_location == 0) {
+ QNmeaPositionInfoSource *nmeaLocation = new QNmeaPositionInfoSource(QNmeaPositionInfoSource::SimulationMode, this);
+ QFile *logFile = new QFile(QApplication::applicationDirPath()
+ + QDir::separator() + "nmealog.txt", this);
+ nmeaLocation->setDevice(logFile);
+ m_location = nmeaLocation;
+ m_logfileInUse = true;
+ }
+
+ // Listen gps position changes
+ connect(m_location, SIGNAL(positionUpdated(QGeoPositionInfo)),
+ this, SLOT(positionUpdated(QGeoPositionInfo)));
+
+ // QGeoSatelliteInfoSource
+ m_satellite = QGeoSatelliteInfoSource::createDefaultSource(this);
+ // Listen satellite status changes
+ if (m_satellite != 0) {
+ connect(m_satellite, SIGNAL(satellitesInViewUpdated(const QList<QGeoSatelliteInfo>&)),
+ this, SLOT(satellitesInViewUpdated(const QList<QGeoSatelliteInfo>&)));
+ connect(m_satellite, SIGNAL(satellitesInUseUpdated(const QList<QGeoSatelliteInfo>&)),
+ this, SLOT(satellitesInUseUpdated(const QList<QGeoSatelliteInfo>&)));
+ }
+
+ // QHttp
+ m_http = new QHttp(this);
+ connect(m_http, SIGNAL(requestFinished(int, bool)),
+ this, SLOT(httpRequestFinished(int, bool)));
+ connect(m_http, SIGNAL(dataReadProgress(int, int)),
+ this, SLOT(updateDataReadProgress(int, int)));
+ connect(m_http, SIGNAL(responseHeaderReceived(const QHttpResponseHeader&)),
+ this, SLOT(readResponseHeader(const QHttpResponseHeader&)));
+
+ QTimer::singleShot(0, this, SLOT(delayedInit()));
+}
+
+FlickrDemo::~FlickrDemo()
+{
+ m_location->stopUpdates();
+ if (m_satellite)
+ m_satellite->stopUpdates();
+ m_http->abort();
+ if (m_session)
+ m_session->close();
+}
+
+void FlickrDemo::delayedInit()
+{
+ if (m_logfileInUse) {
+ QMessageBox::information(this, tr("Flickr Demo"),
+ tr("No GPS support detected, using GPS data from a sample log file instead."));
+ }
+
+ QNetworkConfigurationManager manager;
+ const bool canStartIAP = (manager.capabilities()
+ & QNetworkConfigurationManager::CanStartAndStopInterfaces);
+ QNetworkConfiguration cfg = manager.defaultConfiguration();
+ if (!cfg.isValid() || (!canStartIAP && cfg.state() != QNetworkConfiguration::Active)) {
+ QMessageBox::information(this, tr("Flickr Demo"), tr("Available Access Points not found."));
+ return;
+ }
+
+ m_session = new QNetworkSession(cfg, this);
+ m_connectivityHelper = new ConnectivityHelper(m_session, this);
+ connect(m_session, SIGNAL(opened()), this, SLOT(networkSessionOpened()));
+ connect(m_connectivityHelper, SIGNAL(networkingCancelled()), qApp, SLOT(quit()));
+
+ m_session->open();
+}
+
+void FlickrDemo::networkSessionOpened()
+{
+ // Start listening GPS position updates
+ m_location->startUpdates();
+
+ // Start listening GPS satellite status changes
+ if (m_satellite != 0) {
+ m_satellite->startUpdates();
+ } else {
+ satellitesLabel->setText(tr("GPS not detected, replaying coordinates from sample log file."));
+ }
+}
+
+void FlickrDemo::createMenus()
+{
+ m_downloadAct = new QAction(tr("Download Picture List"), this);
+#if defined(Q_OS_SYMBIAN) || defined(Q_OS_WINCE)
+ menuBar()->addAction(m_downloadAct);
+#endif
+ connect(m_downloadAct, SIGNAL(triggered()), this, SLOT(downloadButtonClicked()));
+
+ QAction* exitAct = new QAction(tr("Exit"), this);
+#if defined(Q_OS_SYMBIAN) || defined(Q_OS_WINCE)
+ menuBar()->addAction(exitAct);
+#endif
+ connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
+}
+
+void FlickrDemo::positionUpdated(const QGeoPositionInfo &gpsPos)
+{
+ if (gpsPos.isValid()) {
+ QGeoCoordinate coord = gpsPos.coordinate();
+ m_latitude = coord.latitude();
+ m_longitude = coord.longitude();
+
+ locationLabel->setText(tr("Lat: %1 Long: %2").arg(QString::number(m_latitude),
+ QString::number(m_longitude)));
+ }
+}
+
+void FlickrDemo::satellitesInViewUpdated(const QList<QGeoSatelliteInfo> &satellites)
+{
+ m_satellitesInView = satellites.count();
+ viewSatelliteInfo();
+}
+void FlickrDemo::satellitesInUseUpdated(const QList<QGeoSatelliteInfo> &satellites)
+{
+ m_satellitesUsed = satellites.count();
+ viewSatelliteInfo();
+}
+
+void FlickrDemo::viewSatelliteInfo()
+{
+ if (m_satellite != 0) {
+ satellitesLabel->setText(tr("Using %1 of %2 satellites").arg(QString::number(m_satellitesUsed), QString::number(m_satellitesInView)));
+ } else {
+ satellitesLabel->setText(tr("GPS not detected, replaying coordinates from sample log file."));
+ }
+}
+
+void FlickrDemo::downloadButtonClicked()
+{
+ if (m_downloadPictureList) {
+ downloadFlickerPictureList();
+ } else {
+ downloadPictureFromFlickr();
+ }
+}
+
+void FlickrDemo::downloadFlickerPictureList()
+{
+ if (m_latitude == -1000 || m_longitude == -1000) {
+ if (QMessageBox::question(this,
+ tr("Flickr Demo"),
+ tr("No satellite connection.\n""Use hard coded coordinates?"),
+ QMessageBox::Ok | QMessageBox::Cancel,
+ QMessageBox::Cancel)
+ == QMessageBox::Cancel) {
+ return;
+ }
+ // If GPS signal is not detected, Tampere area is used as default location
+ m_latitude = 61.4500;
+ m_longitude = 23.8502;
+ }
+
+ // Set IAP name
+ satellitesLabel->setText(tr("Access Point: %1").arg(m_session->configuration().name()));
+ locationLabel->setText(tr("Lat: %1 Long: %2").arg(QString::number(m_latitude),
+ QString::number(m_longitude)));
+
+ QString
+ urlstring =
+ "http://api.flickr.com/services/rest/?min_taken_date=2000-01-01+0:00:00&extras=date_taken&method=flickr.photos.search&per_page=30&sort=date-taken-desc";
+ urlstring.append("&api_key=");
+ urlstring.append(apikey);
+ urlstring.append("&lat=");
+ urlstring.append(QString::number(m_latitude));
+ urlstring.append("&lon=");
+ urlstring.append(QString::number(m_longitude));
+ urlstring.append("&page=");
+ urlstring.append(QString::number(m_page));
+
+ QUrl url(urlstring);
+
+ m_http->setHost(url.host(), QHttp::ConnectionModeHttp, url.port() == -1 ? 0 : url.port());
+ m_httpRequestAborted = false;
+
+ m_httpGetId = m_http->get(urlstring);
+
+ m_progressDialog->setWindowTitle(tr("FlickrDemo"));
+ m_progressDialog->setLabelText(tr("Downloading\nPicture List."));
+ m_progressDialog->setMaximum(10);
+ m_progressDialog->setValue(0);
+ m_progressDialog->show();
+}
+
+bool FlickrDemo::parsePictureList(QString xmlString)
+{
+ QString errorStr;
+ int errorLine;
+ int errorColumn;
+
+ QDomDocument domDocument;
+ if (!domDocument.setContent(xmlString, true, &errorStr, &errorLine, &errorColumn)) {
+ QMessageBox::information(window(),
+ tr("Flickr Demo"),
+ tr("XML Parse error at line %1, column %2:\n%3").arg(errorLine).arg(errorColumn).arg(errorStr));
+ return false;
+ }
+ QDomElement root = domDocument.documentElement();
+
+ if (root.tagName() != "rsp") {
+ QMessageBox::information(window(), tr("Flickr Demo"), tr("Invalid XML format."));
+ return false;
+ }
+ if (root.attribute("stat") != "ok") {
+ QMessageBox::information(window(), tr("Flickr Demo"), tr("Query failed."));
+ return false;
+ }
+
+ listWidget->clear();
+ QListWidgetItem* listItem;
+ QDomElement photosElement = root.firstChildElement("photos");
+ if (!photosElement.isNull()) {
+ m_pages = (photosElement.attribute("pages")).toInt();
+ m_page = (photosElement.attribute("page")).toInt();
+
+ QDomElement child = photosElement.firstChildElement("photo");
+ while (!child.isNull()) {
+ QString url = "http://farm";
+ url.append(child.attribute("farm"));
+ url.append(".static.flickr.com/");
+ url.append(child.attribute("server"));
+ url.append("/");
+ url.append(child.attribute("id"));
+ url.append("_");
+ url.append(child.attribute("secret"));
+
+ m_names << url;
+
+ listItem = new QListWidgetItem(child.attribute("title"));
+ QImage image(thumbnailSize, QImage::Format_Mono);
+ image.fill(1);
+ listItem->setIcon(QPixmap::fromImage(image));
+ listItem->setData(Qt::UserRole, url);
+ listWidget->addItem(listItem);
+
+ child = child.nextSiblingElement("photo");
+ }
+ } else {
+ return false;
+ }
+ m_nameCounter = -1;
+ downloadNextThumbnail();
+
+ return true;
+}
+
+void FlickrDemo::downloadPictureFromFlickr()
+{
+ QListWidgetItem* item = listWidget->currentItem();
+ if (!item) {
+ return;
+ }
+ QString pictureUrl = item->data(Qt::UserRole).toString();
+ pictureUrl.append("_m.jpg");
+
+ QUrl url(pictureUrl);
+ QFileInfo fileInfo(url.path());
+ QString fileName = fileInfo.fileName();
+ if (fileName.isEmpty()) {
+ fileName = "test.jpg";
+ }
+
+ m_filePath = savePath;
+ m_filePath.append(fileName);
+
+ if (QFile::exists(m_filePath)) {
+ if (QMessageBox::question(this,
+ tr("Flickr Demo"),
+ tr("File %1 is already downloaded."
+ "Overwrite?").arg(fileName),
+ QMessageBox::Yes | QMessageBox::No,
+ QMessageBox::No)
+ == QMessageBox::No) {
+ displayImage();
+ return;
+ }
+ QFile::remove(m_filePath);
+ }
+
+ m_file = new QFile(m_filePath);
+ if (!m_file->open(QIODevice::WriteOnly)) {
+ QMessageBox::information(this, tr("Flickr Demo"),
+ tr("Unable to save the file %1: %2.").arg(m_filePath).arg(m_file->errorString()));
+ delete m_file;
+ m_file = 0;
+ return;
+ }
+
+ m_http->setHost(url.host(), QHttp::ConnectionModeHttp, url.port() == -1 ? 0 : url.port());
+
+ m_httpRequestAborted = false;
+ QByteArray encodedUrl = QUrl::toPercentEncoding(url.path(), "!$&'()*+,;=:@/");
+ if (encodedUrl.isEmpty()) {
+ encodedUrl = "/";
+ }
+ m_httpGetId = m_http->get(encodedUrl, m_file);
+
+ m_progressDialog->setWindowTitle(tr("Flickr Demo"));
+ m_progressDialog->setLabelText(tr("Downloading:\n%1").arg(fileName));
+ m_progressDialog->setMaximum(10);
+ m_progressDialog->setValue(0);
+ m_progressDialog->show();
+
+ downloadButton->setEnabled(false);
+}
+
+void FlickrDemo::cancelDownload()
+{
+ m_httpRequestAborted = true;
+ m_downloadingThumbnails = false;
+ m_http->abort();
+ downloadButton->setEnabled(true);
+}
+
+void FlickrDemo::httpRequestFinished(int requestId, bool error)
+{
+ if (m_downloadingThumbnails && m_httpThumbnailGetId == requestId) {
+ if (!error) {
+ QByteArray picture = m_http->readAll();
+ if (!picture.isNull() && picture.size() > 0) {
+ QListWidgetItem* item = listWidget->item(m_nameCounter);
+ QImage image;
+ if (image.loadFromData(picture, "jpg")) {
+ item->setIcon(QPixmap::fromImage(image.scaled(thumbnailSize,
+ Qt::KeepAspectRatio, Qt::SmoothTransformation)));
+ listWidget->update();
+ }
+ }
+ }
+ downloadNextThumbnail();
+ return;
+ }
+
+ if (requestId != m_httpGetId) {
+ return;
+ }
+
+ m_progressDialog->hide();
+
+ if (m_httpRequestAborted) {
+ if (m_file) {
+ m_file->close();
+ m_file->remove();
+ delete m_file;
+ m_file = 0;
+ }
+
+ return;
+ }
+
+ if (!m_downloadPictureList && m_file) {
+ m_file->close();
+ }
+
+ if (error) {
+ if (!m_downloadPictureList && m_file) {
+ m_file->remove();
+ }
+ QMessageBox::information(this,
+ tr("Flickr Demo"),
+ tr("Download failed: %1.").arg(m_http->errorString()));
+ }
+
+ if (m_downloadPictureList) {
+ if (parsePictureList(QString::fromUtf8(m_http->readAll()))) {
+ m_downloadPictureList = false;
+ downloadButton->setText(tr("Download Selected Picture"));
+ m_downloadAct->setText(tr("Download Selected Picture"));
+ }
+ } else {
+ displayImage();
+ }
+
+ downloadButton->setEnabled(true);
+}
+
+void FlickrDemo::displayImage()
+{
+ PictureDialog dialog(m_filePath, listWidget->currentItem()->text(), this);
+#if defined(Q_OS_SYMBIAN) || defined (Q_OS_WINCE)
+ dialog.showMaximized();
+#endif
+ if (!dialog.exec()) {
+ if (m_file && m_file->exists()) {
+ m_file->remove();
+ }
+ }
+ if(m_file)
+ delete m_file;
+ m_file = 0;
+}
+
+void FlickrDemo::readResponseHeader(const QHttpResponseHeader& responseHeader)
+{
+ switch (responseHeader.statusCode()) {
+ case 200: // Ok
+ case 301: // Moved Permanently
+ case 302: // Found
+ case 303: // See Other
+ case 307: // Temporary Redirect
+ // these are not error conditions
+ break;
+ default:
+ QMessageBox::information(this,
+ tr("Flickr Demo"),
+ tr("Download failed: %1.").arg(responseHeader.reasonPhrase()));
+ m_downloadingThumbnails = false;
+ m_httpRequestAborted = true;
+ m_progressDialog->hide();
+ m_http->abort();
+ }
+}
+
+void FlickrDemo::updateDataReadProgress(int bytesRead, int totalBytes)
+{
+ if (m_httpRequestAborted) {
+ return;
+ }
+
+ if (!m_downloadingThumbnails) {
+ m_progressDialog->setMaximum(totalBytes);
+ m_progressDialog->setValue(bytesRead);
+ }
+}
+
+void FlickrDemo::downloadNextThumbnail()
+{
+ m_nameCounter++;
+ if (m_nameCounter < m_names.count()) {
+ QString pictureUrl = m_names[m_nameCounter];
+ pictureUrl.append("_s.jpg");
+ QUrl url(pictureUrl);
+ m_http->setHost(url.host(), QHttp::ConnectionModeHttp, url.port() == -1 ? 0 : url.port());
+ m_downloadingThumbnails = true;
+ m_httpThumbnailGetId = m_http->get(pictureUrl);
+ } else {
+ m_downloadingThumbnails = false;
+ }
+}
+
+// static constant intialization
+
+const QSize PictureDialog::imageSize = QSize(150, 150);
+
+PictureDialog::PictureDialog(const QString& filePath, const QString& pictureName, QWidget* parent) :
+ QDialog(parent)
+{
+ resize(252, 361);
+ QVBoxLayout *verticalLayout = new QVBoxLayout();
+ verticalLayout->setSpacing(6);
+ verticalLayout->setContentsMargins(11, 11, 11, 11);
+
+ label = new QLabel();
+ QString fileName = QFileInfo(filePath).fileName();
+ label->setText(tr("Downloaded:\n%1\n%2").arg(pictureName).arg(fileName));
+
+ QSizePolicy sizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
+ sizePolicy.setHorizontalStretch(0);
+ sizePolicy.setVerticalStretch(0);
+ sizePolicy.setHeightForWidth(label->sizePolicy().hasHeightForWidth());
+ label->setSizePolicy(sizePolicy);
+
+ verticalLayout->addWidget(label);
+
+ imageLabel = new QLabel();
+ QImage image;
+ image.load(filePath);
+ imageLabel->setPixmap(QPixmap::fromImage(image.scaled(imageSize, Qt::KeepAspectRatio,
+ Qt::SmoothTransformation)));
+
+ verticalLayout->addWidget(imageLabel);
+
+ keepButton = new QPushButton(tr("Keep"));
+ keepButton->setDefault(true);
+ discardButton = new QPushButton(tr("Discard"));
+
+ buttonBox = new QDialogButtonBox();
+ buttonBox->addButton(keepButton, QDialogButtonBox::AcceptRole);
+ buttonBox->addButton(discardButton, QDialogButtonBox::DestructiveRole);
+ connect(buttonBox, SIGNAL(clicked(QAbstractButton *)), this, SLOT(clicked(QAbstractButton *)));
+
+ verticalLayout->addWidget(buttonBox);
+
+ setLayout(verticalLayout);
+
+ setWindowTitle(tr("Flickr Demo"));
+}
+
+void PictureDialog::clicked(QAbstractButton* button)
+{
+ if (button == keepButton) {
+ accept();
+ } else if (button == discardButton) {
+ reject();
+ }
+}