worldclock.h

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// Copyright 2008 Henry de Valence <hdevalence@gmail.com>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program. If not, see <http://www.gnu.org/licenses/>.


#ifndef WORLDCLOCK_H
#define WORLDCLOCK_H


#include <Plasma/Applet>
#include <Plasma/DataEngine>
#include "ui_worldclockConfig.h"


class QGraphicsSceneHoverEvent;
class QStyleOptionGraphicsItem;
class QFont;
class QRect;
class QString;
class QPainter;
class QDateTime;
class QPointF;

class KTimeZone;

namespace Marble
{

class MarbleMap;

class WorldClock : public Plasma::Applet
{
    Q_OBJECT
    public:
        WorldClock(QObject *parent, const QVariantList &args);
        ~WorldClock();
        void init();
        void paintInterface(QPainter *painter,
                    const QStyleOptionGraphicsItem *option,
                    const QRect& contentsRect);
    public slots:
        void dataUpdated(const QString &source,
                    const Plasma::DataEngine::Data &data);
        void createConfigurationInterface(KConfigDialog *parent);
        void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
        void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
        void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
    protected slots:
        void configAccepted();
    private slots:
        //connected to geometryChanged()
        void resizeMap(bool changeAspect = false);
        void slotRepaint();
    private:
        void connectToEngine();

        //these are used for sizing & positioning text
        void recalculatePoints();
        void recalculateFonts();
        QFont calculateFont(const QString &text, const QRect &boundingBox) const;
        void recalculateTranslation();

        //for changing zones based on mouse position
        void setTz( QString newtz );
        QString getZone();

        //time in our selected timezone
        QDateTime m_time;
        //time in user's local zone
        QDateTime m_localtime;
        bool m_showDate;
        //use custom zone list?
        bool m_customTz;

        //the translation
        QPoint m_t;

        //the map
        MarbleMap  *m_map;

        //hover stuff
        bool m_isHovered;
        QPointF m_hover;

        //map of locations and key for accessing it.
        QString m_locationkey;
        QMap<QString, KTimeZone> m_locations;

        //so we can check if the size has changed
        QRect m_lastRect;

        //Font sizing & positioning
        QFont m_timeFont;
        QFont m_locationFont;
        QHash<QString, QPoint> m_points;

        //engine
        Plasma::DataEngine *m_timeEngine;

        //config gui
        Ui::worldclockConfig ui;
};

} //ns Marble

K_EXPORT_PLASMA_APPLET(worldclock, Marble::WorldClock)
#endif