//
// This file is part of the Marble Desktop Globe.
//
// This program is free software licensed under the GNU LGPL. You can
// find a copy of this license in LICENSE.txt in the top directory of
// the source code.
//
// Copyright 2007-2009 Torsten Rahn <tackat@kde.org>
// Copyright 2007      Inge Wallin  <ingwa@kde.org>
//


#ifndef GLOBAL_H
#define GLOBAL_H


#include <math.h>

#include <QtCore/QString>

#include "marble_export.h"

// #define QT_STRICT_ITERATORS

namespace Marble
{

enum TessellationFlag {
    NoTessellation = 0x0,
    Tessellate = 0x1, 
    RespectLatitudeCircle = 0x2,
    FollowGround = 0x4,
    RotationIndicatesFill = 0x8,
    SkipLatLonNormalization = 0x10
};

Q_DECLARE_FLAGS(TessellationFlags, TessellationFlag)

/**
 * @brief This enum is used to choose the projection shown in the view.
 */
enum Projection { 
    Spherical,          ///< Spherical projection
    Equirectangular,    ///< Flat projection ("plate carree")
    Mercator            ///< Mercator projection
};

/**
 * @brief This enum is used to choose the unit chosen to measure distances.
 */
enum DistanceUnit {
    NoDistanceUnit = -1,
    Meter,                     ///< Metric unit
    MilesFeet                  ///< Imperial unit
};

/**
 * @brief This enum is used to choose the default for many units in marble.
 */
enum MeasureSystem {
    Metric,
    Imperial
};

/**
 * @brief This enum is used to choose the dimension.
 */
enum Dimension {
    Latitude,             ///< Latitude
    Longitude            ///< Longitude
};

Q_DECLARE_FLAGS(Dimensions, Dimension)

/**
 * @brief This enum is used to choose the unit chosen to measure angles.
 */
enum AngleUnit {
    DMSDegree,          ///< Degrees in DMS notation
    DecimalDegree,      ///< Degrees in decimal notation
    UTM                 ///< UTM
};

/**
 * @brief This enum is used to choose context in which map quality gets used.
 */
enum ViewContext {
    Still,              ///< still image
    Animation           ///< animated view (e.g. while rotating the globe)
}; 

/**
 * @brief This enum is used to choose the map quality shown in the view.
 */
enum MapQuality {
    OutlineQuality,     ///< Only a wire representation is drawn
    LowQuality,         ///< Low resolution (e.g. interlaced)
    NormalQuality,      ///< Normal quality
    HighQuality,        ///< High quality (e.g. antialiasing for lines)
    PrintQuality        ///< Print quality
}; 

/**
 * @brief This enum is used to choose which graphics system Qt is using.
 */
enum GraphicsSystem {
    NativeGraphics,     ///< Uses the native graphics system of the OS
    RasterGraphics,     ///< Renders everything onto a pixmap
    OpenGLGraphics      ///< Uses OpenGL
};

/**
 * @brief This enum is used to specify the proxy that is used.
 */
enum ProxyType {
    HttpProxy,          ///< Uses an Http proxy
    Socks5Proxy         ///< Uses a Socks5Proxy
};

/**
 * @brief This enum is used to choose the localization of the labels.
 */
enum LabelPositionFlag {
    NoLabel = 0x0,
    LineStart = 0x1,
    LineCenter = 0x2,
    LineEnd = 0x4,
    IgnoreXMargin = 0x8,
    IgnoreYMargin = 0x10
};

Q_DECLARE_FLAGS(LabelPositionFlags, LabelPositionFlag)

/**
 * @brief This enum is used to choose the localization of the labels.
 */
enum LabelLocalization {
    CustomAndNative,    ///< Custom and native labels
    Custom,             ///< Shows the name in the user's language
    Native              ///< Display the name in the official language and  
                        ///  glyphs of the labeled place. 
};

/**
 * @brief This enum is used to choose how the globe behaves while dragging.
 */
enum DragLocation {
    KeepAxisVertically, ///< Keep planet axis vertically
    FollowMousePointer  ///< Follow mouse pointer exactly
};

/**
 * @brief This enum is used to choose how the globe behaves while dragging.
 */
enum OnStartup {
    ShowHomeLocation,   ///< Show home location on startup
    LastLocationVisited ///< Show last location visited on quit
};

enum AltitudeMode {
    ClampToGround,      ///< Altitude always sticks to ground level
    RelativeToGround,   ///< Altitude is always given relative to ground level
    Absolute            ///< Altitude is given relative to the sealevel
};

enum Pole {
    AnyPole,             ///< Any pole
    NorthPole,           ///< Only North Pole
    SouthPole            ///< Only South Pole
};

/**
 * @brief This enum is used to describe the type of download
 */
enum DownloadUsage {
    DownloadBulk,       ///< Bulk download, for example "File/Download region"
    DownloadBrowse      ///< Browsing mode, normal operation of Marble, like a web browser
};

const int defaultLevelZeroColumns = 2;
const int defaultLevelZeroRows = 1;

// Conversion Metric / Imperial System: km vs. miles
const qreal MI2KM = 1.609344;
const qreal KM2MI = 1.0 / MI2KM;

// Conversion Metric / Imperial System: meter vs. feet
const qreal M2FT = 3.2808;
const qreal FT2M = 1.0 / M2FT;

// Conversion degree vs. radians
const qreal DEG2RAD = M_PI / 180.0;
const qreal RAD2DEG = 180.0 / M_PI;


// Version definitions to use with an external application (as digiKam)

// String for about dialog.
const QString MARBLE_VERSION_STRING = QString::fromLatin1( "0.9.5" );

// API Version id:
// form : 0xMMmmpp
//        MM = major revision.
//        mm = minor revision.
//        pp = patch revision.
#define MARBLE_VERSION 0x000905

static const char NOT_AVAILABLE[] = QT_TR_NOOP("not available");

const int tileDigits = 6;

// Usage deprecated:
const qreal RAD2INT = 21600.0 / M_PI;

// Average earth radius in m
// Deprecated: Please use model()->planetRadius() instead.
const qreal EARTH_RADIUS = 6378000.0;

// Maximum level of base tiles
const quint8 maxBaseTileLevel = 4;

class MarbleGlobalPrivate;
class MarbleLocale;

class  MARBLE_EXPORT MarbleGlobal
{
 public:
    static MarbleGlobal * getInstance();
    ~MarbleGlobal();

    MarbleLocale * locale() const;

 private:
    MarbleGlobal();

    Q_DISABLE_COPY( MarbleGlobal )
    MarbleGlobalPrivate  * const d;
};

}

Q_DECLARE_OPERATORS_FOR_FLAGS(Marble::TessellationFlags)
Q_DECLARE_OPERATORS_FOR_FLAGS(Marble::LabelPositionFlags)

#endif
