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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 503 insertions, 0 deletions

diff --git a/demos/embedded/weatherinfo/weatherinfo.cpp b/demos/embedded/weatherinfo/weatherinfo.cpp
new file mode 100644
index 0000000..2ab18ef
--- /dev/null
+++ b/demos/embedded/weatherinfo/weatherinfo.cpp
@@ -0,0 +1,503 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 <QtCore>
+#include <QtGui>
+#include <QtNetwork>
+#include <QtSvg>
+
+class WeatherInfo: public QMainWindow
+{
+    Q_OBJECT
+
+private:
+
+    QGraphicsView *m_view;
+    QGraphicsScene m_scene;
+    QString city;
+    QGraphicsRectItem *m_statusItem;
+    QGraphicsTextItem *m_temperatureItem;
+    QGraphicsTextItem *m_conditionItem;
+    QGraphicsSvgItem *m_iconItem;
+    QList<QGraphicsRectItem*> m_forecastItems;
+    QList<QGraphicsTextItem*> m_dayItems;
+    QList<QGraphicsSvgItem*> m_conditionItems;
+    QList<QGraphicsTextItem*> m_rangeItems;
+    QTimeLine m_timeLine;
+    QHash<QString, QString> m_icons;
+    QNetworkAccessManager m_manager;
+
+public:
+    WeatherInfo(QWidget *parent = 0): QMainWindow(parent) {
+
+        m_view = new QGraphicsView(this);
+        setCentralWidget(m_view);
+
+        setupScene();
+        m_view->setScene(&m_scene);
+        m_view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+        m_view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+
+        m_view->setFrameShape(QFrame::NoFrame);
+        setWindowTitle("Weather Info");
+
+        QStringList cities;
+        cities << "Oslo";
+        cities << "Berlin";
+        cities << "Brisbane";
+        cities << "Helsinki";
+        cities << "San Diego";
+        for (int i = 0; i < cities.count(); ++i) {
+            QAction *action = new QAction(cities[i], this);
+            connect(action, SIGNAL(triggered()), SLOT(chooseCity()));
+            addAction(action);
+#if defined(Q_OS_SYMBIAN)
+            menuBar()->addAction(action);
+#endif
+        }
+        setContextMenuPolicy(Qt::ActionsContextMenu);
+
+        connect(&m_manager, SIGNAL(finished(QNetworkReply*)),
+                this, SLOT(handleNetworkData(QNetworkReply*)));
+
+        QTimer::singleShot(0, this, SLOT(delayedInit()));
+    }
+
+private slots:
+    void delayedInit() {
+        request("Oslo");
+    }
+
+private slots:
+
+    void chooseCity() {
+        QAction *action = qobject_cast<QAction*>(sender());
+        if (action)
+            request(action->text());
+    }
+
+    void handleNetworkData(QNetworkReply *networkReply) {
+        QUrl url = networkReply->url();
+        if (!networkReply->error())
+            digest(QString::fromUtf8(networkReply->readAll()));
+        networkReply->deleteLater();
+    }
+
+    void animate(int frame) {
+        qreal progress = static_cast<qreal>(frame) / 100;
+#if QT_VERSION >= 0x040500
+        m_iconItem->setOpacity(progress);
+#endif
+        qreal hw = width() / 2.0;
+        m_statusItem->setPos(-hw + hw * progress, 0);
+        for (int i = 0; i < m_forecastItems.count(); ++i) {
+            qreal ofs = i * 0.5 / m_forecastItems.count();
+            qreal alpha = qBound(qreal(0), 2 * (progress - ofs), qreal(1));
+#if QT_VERSION >= 0x040500
+            m_conditionItems[i]->setOpacity(alpha);
+#endif
+            QPointF pos = m_forecastItems[i]->pos();
+            if (width() > height()) {
+                qreal fx = width() - width() * 0.4 * alpha;
+                m_forecastItems[i]->setPos(fx, pos.y());
+            } else {
+                qreal fx = height() - height() * 0.5 * alpha;
+                m_forecastItems[i]->setPos(pos.x(), fx);
+            }
+        }
+    }
+
+private:
+
+    void setupScene() {
+
+        QColor textColor = palette().color(QPalette::WindowText);
+        QFont textFont = font();
+        textFont.setBold(true);
+        textFont.setPointSize(textFont.pointSize() * 2);
+
+        m_temperatureItem = m_scene.addText(QString(), textFont);
+        m_temperatureItem->setDefaultTextColor(textColor);
+
+        m_conditionItem = m_scene.addText(QString(), textFont);
+        m_conditionItem->setDefaultTextColor(textColor);
+
+        m_iconItem = new QGraphicsSvgItem;
+        m_scene.addItem(m_iconItem);
+
+        m_statusItem = m_scene.addRect(0, 0, 10, 10);
+        m_statusItem->setPen(Qt::NoPen);
+        m_statusItem->setBrush(Qt::NoBrush);
+        m_temperatureItem->setParentItem(m_statusItem);
+        m_conditionItem->setParentItem(m_statusItem);
+        m_iconItem->setParentItem(m_statusItem);
+
+        connect(&m_timeLine, SIGNAL(frameChanged(int)), SLOT(animate(int)));
+        m_timeLine.setDuration(1100);
+        m_timeLine.setFrameRange(0, 100);
+        m_timeLine.setCurveShape(QTimeLine::EaseInCurve);
+    }
+
+    void request(const QString &location) {
+        QUrl url("http://www.google.com/ig/api");
+        url.addEncodedQueryItem("hl", "en");
+        url.addEncodedQueryItem("weather", QUrl::toPercentEncoding(location));
+
+        m_manager.get(QNetworkRequest(url));
+
+        city = QString();
+        setWindowTitle("Loading...");
+    }
+
+    QString extractIcon(const QString &data) {
+        if (m_icons.isEmpty()) {
+            m_icons["mostly_cloudy"]    = "weather-few-clouds";
+            m_icons["cloudy"]           = "weather-overcast";
+            m_icons["mostly_sunny"]     = "weather-sunny-very-few-clouds";
+            m_icons["partly_cloudy"]    = "weather-sunny-very-few-clouds";
+            m_icons["sunny"]            = "weather-sunny";
+            m_icons["flurries"]         = "weather-snow";
+            m_icons["fog"]              = "weather-fog";
+            m_icons["haze"]             = "weather-haze";
+            m_icons["icy"]              = "weather-icy";
+            m_icons["sleet"]            = "weather-sleet";
+            m_icons["chance_of_sleet"]  = "weather-sleet";
+            m_icons["snow"]             = "weather-snow";
+            m_icons["chance_of_snow"]   = "weather-snow";
+            m_icons["mist"]             = "weather-showers";
+            m_icons["rain"]             = "weather-showers";
+            m_icons["chance_of_rain"]   = "weather-showers";
+            m_icons["storm"]            = "weather-storm";
+            m_icons["chance_of_storm"]  = "weather-storm";
+            m_icons["thunderstorm"]     = "weather-thundershower";
+            m_icons["chance_of_tstorm"] = "weather-thundershower";
+        }
+        QRegExp regex("([\\w]+).gif$");
+        if (regex.indexIn(data) != -1) {
+            QString i = regex.cap();
+            i = i.left(i.length() - 4);
+            QString name = m_icons.value(i);
+            if (!name.isEmpty()) {
+                name.prepend(":/icons/");
+                name.append(".svg");
+                return name;
+            }
+        }
+        return QString();
+    }
+
+    static QString toCelcius(QString t, QString unit) {
+        bool ok = false;
+        int degree = t.toInt(&ok);
+        if (!ok)
+            return QString();
+        if (unit != "SI")
+            degree = ((degree - 32) * 5 + 8)/ 9;
+        return QString::number(degree) + QChar(176);
+    }
+
+
+#define GET_DATA_ATTR xml.attributes().value("data").toString()
+
+    void digest(const QString &data) {
+
+        QColor textColor = palette().color(QPalette::WindowText);
+        QString unitSystem;
+
+        delete m_iconItem;
+        m_iconItem = new QGraphicsSvgItem();
+        m_scene.addItem(m_iconItem);
+        m_iconItem->setParentItem(m_statusItem);
+        qDeleteAll(m_dayItems);
+        qDeleteAll(m_conditionItems);
+        qDeleteAll(m_rangeItems);
+        qDeleteAll(m_forecastItems);
+        m_dayItems.clear();
+        m_conditionItems.clear();
+        m_rangeItems.clear();
+        m_forecastItems.clear();
+
+        QXmlStreamReader xml(data);
+        while (!xml.atEnd()) {
+            xml.readNext();
+            if (xml.tokenType() == QXmlStreamReader::StartElement) {
+                if (xml.name() == "city") {
+                    city = GET_DATA_ATTR;
+                    setWindowTitle(city);
+                }
+                if (xml.name() == "unit_system")
+                    unitSystem = xml.attributes().value("data").toString();
+                // Parse current weather conditions
+                if (xml.name() == "current_conditions") {
+                    while (!xml.atEnd()) {
+                        xml.readNext();
+                        if (xml.name() == "current_conditions")
+                            break;
+                        if (xml.tokenType() == QXmlStreamReader::StartElement) {
+                            if (xml.name() == "condition") {
+                                m_conditionItem->setPlainText(GET_DATA_ATTR);
+                            }
+                            if (xml.name() == "icon") {
+                                QString name = extractIcon(GET_DATA_ATTR);
+                                if (!name.isEmpty()) {
+                                    delete m_iconItem;
+                                    m_iconItem = new QGraphicsSvgItem(name);
+                                    m_scene.addItem(m_iconItem);
+                                    m_iconItem->setParentItem(m_statusItem);
+                                }
+                            }
+                            if (xml.name() == "temp_c") {
+                                QString s = GET_DATA_ATTR + QChar(176);
+                                m_temperatureItem->setPlainText(s);
+                            }
+                        }
+                    }
+                }
+                // Parse and collect the forecast conditions
+                if (xml.name() == "forecast_conditions") {
+                    QGraphicsTextItem *dayItem  = 0;
+                    QGraphicsSvgItem *statusItem = 0;
+                    QString lowT, highT;
+                    while (!xml.atEnd()) {
+                        xml.readNext();
+                        if (xml.name() == "forecast_conditions") {
+                            if (dayItem && statusItem &&
+                                !lowT.isEmpty() && !highT.isEmpty()) {
+                                m_dayItems << dayItem;
+                                m_conditionItems << statusItem;
+                                QString txt = highT + '/' + lowT;
+                                QGraphicsTextItem* rangeItem;
+                                rangeItem = m_scene.addText(txt);
+                                rangeItem->setDefaultTextColor(textColor);
+                                m_rangeItems << rangeItem;
+                                QGraphicsRectItem *box;
+                                box = m_scene.addRect(0, 0, 10, 10);
+                                box->setPen(Qt::NoPen);
+                                box->setBrush(Qt::NoBrush);
+                                m_forecastItems << box;
+                                dayItem->setParentItem(box);
+                                statusItem->setParentItem(box);
+                                rangeItem->setParentItem(box);
+                            } else {
+                                delete dayItem;
+                                delete statusItem;
+                            }
+                            break;
+                        }
+                        if (xml.tokenType() == QXmlStreamReader::StartElement) {
+                            if (xml.name() == "day_of_week") {
+                                QString s = GET_DATA_ATTR;
+                                dayItem = m_scene.addText(s.left(3));
+                                dayItem->setDefaultTextColor(textColor);
+                            }
+                            if (xml.name() == "icon") {
+                                QString name = extractIcon(GET_DATA_ATTR);
+                                if (!name.isEmpty()) {
+                                    statusItem = new QGraphicsSvgItem(name);
+                                    m_scene.addItem(statusItem);
+                                }
+                            }
+                            if (xml.name() == "low")
+                                lowT = toCelcius(GET_DATA_ATTR, unitSystem);
+                            if (xml.name() == "high")
+                                highT = toCelcius(GET_DATA_ATTR, unitSystem);
+                        }
+                    }
+                }
+
+            }
+        }
+
+        m_timeLine.stop();
+        layoutItems();
+        animate(0);
+        m_timeLine.start();
+    }
+
+    void layoutItems() {
+        m_scene.setSceneRect(0, 0, width() - 1, height() - 1);
+        m_view->centerOn(width() / 2, height() / 2);
+        if (width() > height())
+            layoutItemsLandscape();
+        else
+            layoutItemsPortrait();
+    }
+
+    void layoutItemsLandscape() {
+        m_statusItem->setRect(0, 0, width() / 2 - 1, height() - 1);
+
+        if (!m_iconItem->boundingRect().isEmpty()) {
+            qreal dim = qMin(width() * 0.6, height() * 0.8);
+            qreal pad = (height()  - dim) / 2;
+            qreal sw = dim / m_iconItem->boundingRect().width();
+            qreal sh = dim / m_iconItem->boundingRect().height();
+            m_iconItem->setTransform(QTransform().scale(sw, sh));
+            m_iconItem->setPos(1, pad);
+        }
+
+        m_temperatureItem->setPos(2, 2);
+        qreal h = m_conditionItem->boundingRect().height();
+        m_conditionItem->setPos(10, height() - h);
+
+        if (m_dayItems.count()) {
+            qreal left = width() * 0.6;
+            qreal h = height() / m_dayItems.count();
+            QFont textFont = font();
+            textFont.setPixelSize(static_cast<int>(h * 0.3));
+            qreal statusWidth = 0;
+            qreal rangeWidth = 0;
+            for (int i = 0; i < m_dayItems.count(); ++i) {
+                m_dayItems[i]->setFont(textFont);
+                QRectF brect = m_dayItems[i]->boundingRect();
+                statusWidth = qMax(statusWidth, brect.width());
+                brect = m_rangeItems[i]->boundingRect();
+                rangeWidth = qMax(rangeWidth, brect.width());
+            }
+            qreal space = width() - left - statusWidth - rangeWidth;
+            qreal dim = qMin(h, space);
+            qreal pad = statusWidth + (space  - dim) / 2;
+            for (int i = 0; i < m_dayItems.count(); ++i) {
+                qreal base = h * i;
+                m_forecastItems[i]->setPos(left, base);
+                m_forecastItems[i]->setRect(0, 0, width() - left, h);
+                QRectF brect = m_dayItems[i]->boundingRect();
+                qreal ofs = (h - brect.height()) / 2;
+                m_dayItems[i]->setPos(0, ofs);
+                brect = m_rangeItems[i]->boundingRect();
+                ofs = (h - brect.height()) / 2;
+                m_rangeItems[i]->setPos(width() - rangeWidth - left, ofs);
+                brect = m_conditionItems[i]->boundingRect();
+                ofs = (h - dim) / 2;
+                m_conditionItems[i]->setPos(pad, ofs);
+                if (brect.isEmpty())
+                    continue;
+                qreal sw = dim / brect.width();
+                qreal sh = dim / brect.height();
+                m_conditionItems[i]->setTransform(QTransform().scale(sw, sh));
+            }
+        }
+    }
+
+    void layoutItemsPortrait() {
+
+        m_statusItem->setRect(0, 0, width() - 1, height() / 2 - 1);
+
+        if (!m_iconItem->boundingRect().isEmpty()) {
+            qreal dim = qMin(width() * 0.8, height() * 0.4);
+            qreal ofsy = (height() / 2  - dim) / 2;
+            qreal ofsx = (width() - dim) / 3;
+            qreal sw = dim / m_iconItem->boundingRect().width();
+            qreal sh = dim / m_iconItem->boundingRect().height();
+            m_iconItem->setTransform(QTransform().scale(sw, sh));
+            m_iconItem->setPos(ofsx, ofsy);
+        }
+
+        m_temperatureItem->setPos(2, 2);
+        qreal ch = m_conditionItem->boundingRect().height();
+        qreal cw = m_conditionItem->boundingRect().width();
+        m_conditionItem->setPos(width() - cw , height() / 2 - ch - 20);
+
+        if (m_dayItems.count()) {
+            qreal top = height() * 0.5;
+            qreal w = width() / m_dayItems.count();
+            qreal statusHeight = 0;
+            qreal rangeHeight = 0;
+            for (int i = 0; i < m_dayItems.count(); ++i) {
+                m_dayItems[i]->setFont(font());
+                QRectF brect = m_dayItems[i]->boundingRect();
+                statusHeight = qMax(statusHeight, brect.height());
+                brect = m_rangeItems[i]->boundingRect();
+                rangeHeight = qMax(rangeHeight, brect.height());
+            }
+            qreal space = height() - top - statusHeight - rangeHeight;
+            qreal dim = qMin(w, space);
+
+            qreal boxh = statusHeight + rangeHeight + dim;
+            qreal pad = (height() - top - boxh) / 2;
+
+            for (int i = 0; i < m_dayItems.count(); ++i) {
+                qreal base = w * i;
+                m_forecastItems[i]->setPos(base, top);
+                m_forecastItems[i]->setRect(0, 0, w, boxh);
+                QRectF brect = m_dayItems[i]->boundingRect();
+                qreal ofs = (w - brect.width()) / 2;
+                m_dayItems[i]->setPos(ofs, pad);
+
+                brect = m_rangeItems[i]->boundingRect();
+                ofs = (w - brect.width()) / 2;
+                m_rangeItems[i]->setPos(ofs, pad + statusHeight + dim);
+
+                brect = m_conditionItems[i]->boundingRect();
+                ofs = (w - dim) / 2;
+                m_conditionItems[i]->setPos(ofs, pad + statusHeight);
+                if (brect.isEmpty())
+                    continue;
+                qreal sw = dim / brect.width();
+                qreal sh = dim / brect.height();
+                m_conditionItems[i]->setTransform(QTransform().scale(sw, sh));
+            }
+        }
+    }
+
+
+    void resizeEvent(QResizeEvent *event) {
+        Q_UNUSED(event);
+        layoutItems();
+    }
+
+};
+
+#include "weatherinfo.moc"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    WeatherInfo w;
+#if defined(Q_OS_SYMBIAN)
+    w.showMaximized();
+#else
+    w.resize(520, 288);
+    w.show();
+#endif
+
+    return app.exec();
+}