--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/embedded/weatherinfo/weatherinfo.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,511 @@
+/****************************************************************************
+**
+** 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 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>
+
+#if defined (Q_OS_SYMBIAN)
+#include "sym_iap_util.h"
+#endif
+
+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;
+
+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);
+
+ QTimer::singleShot(0, this, SLOT(delayedInit()));
+ }
+
+private slots:
+ void delayedInit() {
+#if defined(Q_OS_SYMBIAN)
+ qt_SetDefaultIap();
+#else
+ request("Oslo");
+#endif
+ }
+
+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();
+ networkReply->manager()->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));
+
+ QNetworkAccessManager *manager = new QNetworkAccessManager(this);
+ connect(manager, SIGNAL(finished(QNetworkReply*)),
+ this, SLOT(handleNetworkData(QNetworkReply*)));
+ 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();
+}