zonemap.h

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/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef ZONEMAP_H
#define ZONEMAP_H

#include "stylusnormalizer.h"

#include <qlist.h>
#include <qscrollview.h>
#include <qstring.h>

extern const int iCITYOFFSET;

class QImage;
class QComboBox;
class QLabel;
class QTimer;
class QToolButton;
class QListViewItem;
class QListView;


class ZoneField
{
public:
    ZoneField( const QString & );
    void showStructure( void ) const;
    inline int x( void ) const { return _x; };
    inline int y( void ) const { return _y; };

    inline QString city( void ) const { return strCity; };
    inline QString country( void ) const { return strCountry; };
    inline QString code( void ) const { return strCountryCode; };
private:
    int _x;
    int _y;
    QString strCountryCode;
    QString strCountry;
    QString strCity;
};

class ZoneMap : public QScrollView
{
    Q_OBJECT
public:
    ZoneMap( QWidget *parent = 0, const char *name = 0 );
    ~ZoneMap();
    void showZones( void ) const;
    QWidget* selectionWidget( QWidget* parent );
    // convert between the pixels on the image and the coordinates in the
    // database
    inline bool zoneToWin( int zoneX, int zoneY, int &winX, int &winY ) const;
    inline bool winToZone( int winX, int winY, int &zoneX, int &zoneY ) const;

public slots:
    void slotZoom( bool setZoom );
    void slotIllum( bool setIllum );
    void slotUpdate( void );
    void slotRedraw( void );
    void slotFindCity( const QPoint &pos );  // Find the closest city
    void changeClock( bool );

signals:
    void signalTz( const QString &newCountry, const QString &newCity );

protected:
    virtual void viewportMouseMoveEvent( QMouseEvent *event );
    virtual void viewportMousePressEvent( QMouseEvent *event );
    virtual void viewportMouseReleaseEvent( QMouseEvent *event );
    virtual void keyPressEvent( QKeyEvent * );
    virtual void resizeEvent( QResizeEvent *);
    virtual void drawContents( QPainter *p, int cx, int cy, int cw, int ch );

private slots:
    void slotGetCities( QListViewItem * );
    void slotCitySelected(  QListViewItem * );
private:
    ZoneField *findCityNear( ZoneField *city, int key );
    void showCity( ZoneField *city );
    void drawCities( QPainter *p );     // put all the cities on the map (ugly)
    void drawCity( QPainter *p, const ZoneField *pCity ); // draw the given city on the map
    void readZones( void ); // Read in the zone information from the file
    void zoom( void );  // Zoom the map...
    void makeMap( int width, int height );
    QPixmap* pixCurr; // image to be drawn on the screen
    QLabel* lblCity;    // the "tool-tip" that shows up when you pick a city...
    QToolButton *cmdZoom;   // our zoom option...
    QTimer*     tHide;  // the timer to hide the "tool tip"
    ZoneField *pLast;   // the last known good city that was found...
    ZoneField *pRepaint; // save the location to maximize the repaint...
    QList<ZoneField> zones; // a linked list to hold all this information
    StylusNormalizer norm;

    QListView *cityView;
    QString selectedCont;

    //the True width and height of the map...
    int wImg;
    int hImg;
    // the pixel points that correspond to (0, 0);
    int ox;
    int oy;

    // the drawable area of the map...
    int drawableW;
    int drawableH;

    bool bZoom; // a flag to indicate zoom is active
    bool bIllum;    // flag to indicat that illumination is active
    bool ampm;

    ZoneField *cursor;
};

inline bool ZoneMap::zoneToWin( int zoneX, int zoneY,
                                int &winX, int &winY ) const
{
    winY = oy - ( ( hImg * zoneY ) / 648000 );  // 180 degrees in secs
    winX = ox + ( ( wImg * zoneX ) / 1296000 ); // 360 degrees in secs
    // whoa, some things aren't in the best spots..
    if ( winX > wImg ) {
        winX = wImg - iCITYOFFSET;
    } else if ( winX <= 0 ) {
        winX = iCITYOFFSET;
    }

    if ( winY >= hImg ) {
        winY = hImg - iCITYOFFSET;
    } else if ( winY <= 0 ) {
        winY = iCITYOFFSET;
    }
    // perhaps in the future there will be some real error checking
    // for now just return true...
    return true;
}

inline bool ZoneMap::winToZone( int winX, int winY,
                                int &zoneX, int &zoneY ) const
{
    zoneY = ( 648000 * ( oy - winY ) ) / hImg;
    zoneX = ( 1296000 * ( winX - ox ) ) / wImg;
    // perhaps in the future there will be some real error checking
    // for now just return true...
    return true;
}

#endif

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