#include <QEvent>
#include <QString>
#include <QRegExp>
#include <QMetaType>
#include <QVariant>
#include <stdlib.h>
#include <cfloat>
#include <cmath>
#include <qnumeric.h>
#include <qgswkbtypes.h>

Include dependency graph for qgis.h:

Classes
class	QGis
	The QGis class provides global constants for use throughout the application. More...

Macros
#define	FALLTHROUGH

#define	Q_NOWARN_DEPRECATED_POP

#define	Q_NOWARN_DEPRECATED_PUSH

#define	QGISEXTERN extern "C"

Typedefs
typedef unsigned long long	qgssize
	Qgssize is used instead of size_t, because size_t is stdlib type, unknown by SIP, and it would be hard to define size_t correctly in SIP. More...

typedef QMap< QString, QString >	QgsStringMap

Functions
void CORE_EXPORT *	qgsCalloc (size_t nmemb, size_t size)
	Allocates memory for an array of nmemb elements of size bytes each and returns a pointer to the allocated memory. More...

bool	qgsDoubleNear (double a, double b, double epsilon=4 *DBL_EPSILON)

bool	qgsDoubleNearSig (double a, double b, int significantDigits=10)

QString	qgsDoubleToString (double a, int precision=17)

void CORE_EXPORT	qgsFree (void *ptr)
	Frees the memory space pointed to by ptr. More...

void CORE_EXPORT *	qgsMalloc (size_t size)
	Allocates size bytes and returns a pointer to the allocated memory. More...

double	qgsRound (double x)

CORE_EXPORT bool	qgsVariantGreaterThan (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether the first is greater than the second. More...

CORE_EXPORT bool	qgsVariantLessThan (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether the first is less than the second. More...

CORE_EXPORT QString	qgsVsiPrefix (const QString &path)

Variables
void(*)()	cast_to_fptr (void *p)

const double	DEFAULT_LINE_WIDTH = 0.26

const double	DEFAULT_POINT_SIZE = 2.0
	Magic number that determines the default point size for point symbols. More...

const double	DEFAULT_SEGMENT_EPSILON = 1e-8
	Default snapping tolerance for segments. More...

const int	ELLPS_PREFIX_LEN = 7
	The length of the string "+ellps=". More...

CORE_EXPORT const QString	GEO_EPSG_CRS_AUTHID
	Geographic coord sys from EPSG authority. More...

const long	GEO_EPSG_CRS_ID = 4326
	Magic number for a geographic coord sys in EpsgCrsId ID format. More...

CORE_EXPORT const QString	GEO_NONE
	Constant that holds the string representation for "No ellips/No CRS". More...

const long	GEOCRS_ID = 3452
	Magic number for a geographic coord sys in QGIS srs.db tbl_srs.srs_id. More...

CORE_EXPORT const QString	GEOPROJ4
	PROJ4 string that represents a geographic coord sys. More...

const long	GEOSRID = 4326
	Magic number for a geographic coord sys in POSTGIS SRID. More...

CORE_EXPORT const QString	GEOWKT
	Wkt string that represents a geographic coord sys. More...

const int	LAT_PREFIX_LEN = 7
	The length of the string "+lat_1=". More...

const double	MINIMUM_POINT_SIZE = 0.1
	Magic number that determines the minimum allowable point size for point symbols. More...

const int	PROJ_PREFIX_LEN = 6
	The length of the string "+proj=". More...

CORE_EXPORT const QString	PROJECT_SCALES

const int	USER_CRS_START_ID = 100000
	Magick number that determines whether a projection crsid is a system (srs.db) or user (~/.qgis.qgis.db) defined projection. More...

Macro Definition Documentation

◆ FALLTHROUGH

#define FALLTHROUGH

Definition at line 439 of file qgis.h.

◆ Q_NOWARN_DEPRECATED_POP

#define Q_NOWARN_DEPRECATED_POP

Definition at line 416 of file qgis.h.

◆ Q_NOWARN_DEPRECATED_PUSH

#define Q_NOWARN_DEPRECATED_PUSH

Definition at line 415 of file qgis.h.

◆ QGISEXTERN

#define QGISEXTERN extern "C"

Definition at line 430 of file qgis.h.

Typedef Documentation

◆ qgssize

typedef unsigned long long qgssize

Qgssize is used instead of size_t, because size_t is stdlib type, unknown by SIP, and it would be hard to define size_t correctly in SIP.

Currently used "unsigned long long" was introduced in C++11 (2011) but it was supported already before C++11 on common platforms. "unsigned long long int" gives syntax error in SIP. KEEP IN SYNC WITH qgssize defined in SIP!

Definition at line 400 of file qgis.h.

◆ QgsStringMap

typedef QMap<QString, QString> QgsStringMap

Definition at line 392 of file qgis.h.

Function Documentation

◆ qgsCalloc()

void CORE_EXPORT* qgsCalloc	(	size_t	nmemb,
		size_t	size
	)

Allocates memory for an array of nmemb elements of size bytes each and returns a pointer to the allocated memory.

Works like C calloc() but prints debug message by QgsLogger if allocation fails.

Parameters

nmemb	number of elements
size	size of element in bytes

Definition at line 247 of file qgis.cpp.

◆ qgsDoubleNear()

bool qgsDoubleNear	(	double	a,
		double	b,
		double	epsilon = `4 * DBL_EPSILON`
	)

inline

Definition at line 285 of file qgis.h.

◆ qgsDoubleNearSig()

bool qgsDoubleNearSig	(	double	a,
		double	b,
		int	significantDigits = `10`
	)

inline

Definition at line 294 of file qgis.h.

◆ qgsDoubleToString()

QString qgsDoubleToString	(	double	a,
		int	precision = `17`
	)

inline

Definition at line 274 of file qgis.h.

◆ qgsFree()

void CORE_EXPORT qgsFree ( void * ptr )

Frees the memory space pointed to by ptr.

Works like C free().

Parameters

ptr	pointer to memory space

Definition at line 262 of file qgis.cpp.

◆ qgsMalloc()

void CORE_EXPORT* qgsMalloc ( size_t size )

Allocates size bytes and returns a pointer to the allocated memory.

Works like C malloc() but prints debug message by QgsLogger if allocation fails.

Parameters

size	size in bytes

Definition at line 232 of file qgis.cpp.

◆ qgsRound()

double qgsRound ( double x )

inline

Definition at line 312 of file qgis.h.

◆ qgsVariantGreaterThan()

CORE_EXPORT bool qgsVariantGreaterThan	(	const QVariant &	lhs,
		const QVariant &	rhs
	)

Compares two QVariant values and returns whether the first is greater than the second.

Useful for sorting lists of variants, correctly handling sorting of the various QVariant data types (such as strings, numeric values, dates and times)

See also: qgsVariantLessThan()

Definition at line 335 of file qgis.cpp.

◆ qgsVariantLessThan()

CORE_EXPORT bool qgsVariantLessThan	(	const QVariant &	lhs,
		const QVariant &	rhs
	)

Compares two QVariant values and returns whether the first is less than the second.

Useful for sorting lists of variants, correctly handling sorting of the various QVariant data types (such as strings, numeric values, dates and times)

See also: qgsVariantGreaterThan()

Definition at line 267 of file qgis.cpp.

◆ qgsVsiPrefix()

CORE_EXPORT QString qgsVsiPrefix ( const QString & path )

Definition at line 340 of file qgis.cpp.

Variable Documentation

◆ cast_to_fptr

void( *)() cast_to_fptr(void *p)

inline

Definition at line 258 of file qgis.h.

◆ DEFAULT_LINE_WIDTH

const double DEFAULT_LINE_WIDTH = 0.26

Definition at line 387 of file qgis.h.

◆ DEFAULT_POINT_SIZE

const double DEFAULT_POINT_SIZE = 2.0

Magic number that determines the default point size for point symbols.

Definition at line 386 of file qgis.h.

◆ DEFAULT_SEGMENT_EPSILON

const double DEFAULT_SEGMENT_EPSILON = 1e-8

Default snapping tolerance for segments.

Definition at line 390 of file qgis.h.

◆ ELLPS_PREFIX_LEN

const int ELLPS_PREFIX_LEN = 7

The length of the string "+ellps=".

Definition at line 369 of file qgis.h.

◆ GEO_EPSG_CRS_AUTHID

CORE_EXPORT const QString GEO_EPSG_CRS_AUTHID

Geographic coord sys from EPSG authority.

Definition at line 74 of file qgis.cpp.

◆ GEO_EPSG_CRS_ID

const long GEO_EPSG_CRS_ID = 4326

Magic number for a geographic coord sys in EpsgCrsId ID format.

Definition at line 363 of file qgis.h.

◆ GEO_NONE

CORE_EXPORT const QString GEO_NONE

Constant that holds the string representation for "No ellips/No CRS".

Definition at line 76 of file qgis.cpp.

◆ GEOCRS_ID

const long GEOCRS_ID = 3452

Magic number for a geographic coord sys in QGIS srs.db tbl_srs.srs_id.

Definition at line 361 of file qgis.h.

◆ GEOPROJ4

CORE_EXPORT const QString GEOPROJ4

PROJ4 string that represents a geographic coord sys.

Definition at line 54 of file qgis.cpp.

◆ GEOSRID

const long GEOSRID = 4326

Magic number for a geographic coord sys in POSTGIS SRID.

Definition at line 359 of file qgis.h.

◆ GEOWKT

CORE_EXPORT const QString GEOWKT

Wkt string that represents a geographic coord sys.

Note: added to replace GEOWkt

Definition at line 57 of file qgis.cpp.

◆ LAT_PREFIX_LEN

const int LAT_PREFIX_LEN = 7

The length of the string "+lat_1=".

Definition at line 371 of file qgis.h.

◆ MINIMUM_POINT_SIZE

const double MINIMUM_POINT_SIZE = 0.1

Magic number that determines the minimum allowable point size for point symbols.

Definition at line 384 of file qgis.h.

◆ PROJ_PREFIX_LEN

const int PROJ_PREFIX_LEN = 6

The length of the string "+proj=".

Definition at line 367 of file qgis.h.

◆ PROJECT_SCALES

CORE_EXPORT const QString PROJECT_SCALES

Definition at line 70 of file qgis.cpp.

◆ USER_CRS_START_ID

const int USER_CRS_START_ID = 100000

Magick number that determines whether a projection crsid is a system (srs.db) or user (~/.qgis.qgis.db) defined projection.

Definition at line 374 of file qgis.h.

Classes

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

◆ FALLTHROUGH

◆ Q_NOWARN_DEPRECATED_POP

◆ Q_NOWARN_DEPRECATED_PUSH

◆ QGISEXTERN

Typedef Documentation

◆ qgssize

◆ QgsStringMap

Function Documentation

◆ qgsCalloc()

◆ qgsDoubleNear()

◆ qgsDoubleNearSig()

◆ qgsDoubleToString()

◆ qgsFree()

◆ qgsMalloc()

◆ qgsRound()

◆ qgsVariantGreaterThan()

◆ qgsVariantLessThan()

◆ qgsVsiPrefix()

Variable Documentation

◆ cast_to_fptr

◆ DEFAULT_LINE_WIDTH

◆ DEFAULT_POINT_SIZE

◆ DEFAULT_SEGMENT_EPSILON

◆ ELLPS_PREFIX_LEN

◆ GEO_EPSG_CRS_AUTHID

◆ GEO_EPSG_CRS_ID

◆ GEO_NONE

◆ GEOCRS_ID

◆ GEOPROJ4

◆ GEOSRID

◆ GEOWKT

◆ LAT_PREFIX_LEN

◆ MINIMUM_POINT_SIZE

◆ PROJ_PREFIX_LEN

◆ PROJECT_SCALES

◆ USER_CRS_START_ID