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- /****************************************************************************
- **
- ** 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.
- **
- ** $QT_BEGIN_LICENSE:LGPL$
- ** GNU Lesser General Public License Usage
- ** 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.
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU General
- ** Public License version 3.0 as published by the Free Software Foundation
- ** and appearing in the file LICENSE.GPL included in the packaging of this
- ** file. Please review the following information to ensure the GNU General
- ** Public License version 3.0 requirements will be met:
- ** http://www.gnu.org/copyleft/gpl.html.
- **
- ** Other Usage
- ** Alternatively, this file may be used in accordance with the terms and
- ** conditions contained in a signed written agreement between you and Nokia.
- **
- **
- **
- **
- **
- ** $QT_END_LICENSE$
- **
- ****************************************************************************/
- #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();
- }
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