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| ** This file is part of the examples of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #include <QGuiApplication> |
| #include <QQmlApplicationEngine> |
| #include <QQmlContext> |
| #include <QObject> |
| #include <QTime> |
| #include <QBasicTimer> |
| #include <QDebug> |
| #include <QEasingCurve> |
| #include <QGeoCoordinate> |
| #include <QtPositioning/private/qwebmercator_p.h> |
| |
| #define ANIMATION_DURATION 4000 |
| |
| //! [PlaneController1] |
| class PlaneController: public QObject |
| { |
| Q_OBJECT |
| Q_PROPERTY(QGeoCoordinate position READ position WRITE setPosition NOTIFY positionChanged) |
| //! [PlaneController1] |
| //! [C++Pilot1] |
| Q_PROPERTY(QGeoCoordinate from READ from WRITE setFrom NOTIFY fromChanged) |
| Q_PROPERTY(QGeoCoordinate to READ to WRITE setTo NOTIFY toChanged) |
| //! [C++Pilot1] |
| |
| public: |
| PlaneController() |
| { |
| easingCurve.setType(QEasingCurve::InOutQuad); |
| easingCurve.setPeriod(ANIMATION_DURATION); |
| } |
| |
| void setFrom(const QGeoCoordinate& from) |
| { |
| fromCoordinate = from; |
| } |
| |
| QGeoCoordinate from() const |
| { |
| return fromCoordinate; |
| } |
| |
| void setTo(const QGeoCoordinate& to) |
| { |
| toCoordinate = to; |
| } |
| |
| QGeoCoordinate to() const |
| { |
| return toCoordinate; |
| } |
| |
| void setPosition(const QGeoCoordinate &c) { |
| if (currentPosition == c) |
| return; |
| |
| currentPosition = c; |
| emit positionChanged(); |
| } |
| |
| QGeoCoordinate position() const |
| { |
| return currentPosition; |
| } |
| |
| Q_INVOKABLE bool isFlying() const { |
| return timer.isActive(); |
| } |
| |
| //! [C++Pilot2] |
| public slots: |
| void startFlight() |
| { |
| if (timer.isActive()) |
| return; |
| |
| startTime = QTime::currentTime(); |
| finishTime = startTime.addMSecs(ANIMATION_DURATION); |
| |
| timer.start(15, this); |
| emit departed(); |
| } |
| //! [C++Pilot2] |
| |
| void swapDestinations() { |
| if (currentPosition == toCoordinate) { |
| // swap destinations |
| toCoordinate = fromCoordinate; |
| fromCoordinate = currentPosition; |
| } |
| } |
| |
| signals: |
| void positionChanged(); |
| void arrived(); |
| void departed(); |
| void toChanged(); |
| void fromChanged(); |
| |
| protected: |
| void timerEvent(QTimerEvent *event) override |
| { |
| if (!event) |
| return; |
| |
| if (event->timerId() == timer.timerId()) |
| updatePosition(); |
| else |
| QObject::timerEvent(event); |
| } |
| |
| private: |
| //! [C++Pilot3] |
| void updatePosition() |
| { |
| // simple progress animation |
| qreal progress; |
| QTime current = QTime::currentTime(); |
| if (current >= finishTime) { |
| progress = 1.0; |
| timer.stop(); |
| } else { |
| progress = ((qreal)startTime.msecsTo(current) / ANIMATION_DURATION); |
| } |
| |
| setPosition(QWebMercator::coordinateInterpolation( |
| fromCoordinate, toCoordinate, easingCurve.valueForProgress(progress))); |
| |
| if (!timer.isActive()) |
| emit arrived(); |
| } |
| //! [C++Pilot3] |
| |
| private: |
| QGeoCoordinate currentPosition; |
| QGeoCoordinate fromCoordinate, toCoordinate; |
| QBasicTimer timer; |
| QTime startTime, finishTime; |
| QEasingCurve easingCurve; |
| //! [PlaneController2] |
| // ... |
| }; |
| //! [PlaneController2] |
| |
| //! [PlaneControllerMain] |
| int main(int argc, char *argv[]) |
| { |
| QGuiApplication app(argc, argv); |
| |
| PlaneController oslo2berlin; |
| PlaneController berlin2london; |
| |
| QQmlApplicationEngine engine; |
| engine.rootContext()->setContextProperty("oslo2Berlin", &oslo2berlin); |
| engine.rootContext()->setContextProperty("berlin2London", &berlin2london); |
| engine.load(QUrl(QStringLiteral("qrc:/planespotter.qml"))); |
| |
| return app.exec(); |
| } |
| //! [PlaneControllerMain] |
| |
| #include "main.moc" |