qgis.cpp File Reference

#include "qgis.h"
#include "qgsversion.h"
#include <QCoreApplication>
#include <QColor>
#include <QDate>
#include <QTime>
#include <QLocale>
#include <QDateTime>
#include "qgsconfig.h"
#include "qgslogger.h"
#include "qgswkbtypes.h"
#include <ogr_api.h>

Include dependency graph for qgis.cpp:

Go to the source code of this file.

Functions
void *	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...
void	qgsFree (void *ptr)
	Frees the memory space pointed to by ptr. More...
void *	qgsMalloc (size_t size)
	Allocates size bytes and returns a pointer to the allocated memory. More...
double	qgsPermissiveToDouble (QString string, bool &ok)
	Converts a string to a double in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators. More...
int	qgsPermissiveToInt (QString string, bool &ok)
	Converts a string to an integer in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators. More...
bool	qgsVariantGreaterThan (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether the first is greater than the second. More...
bool	qgsVariantLessThan (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether the first is less than the second. More...
QString	qgsVsiPrefix (const QString &path)
uint	qHash (const QVariant &variant)
	Hash for QVariant. More...

Variables
const QString	GEO_EPSG_CRS_AUTHID = QStringLiteral( "EPSG:4326" )
	Geographic coord sys from EPSG authority. More...
const QString	GEO_NONE = QStringLiteral( "NONE" )
	Constant that holds the string representation for "No ellips/No CRS". More...
const QString	GEOPROJ4 = QStringLiteral( "+proj=longlat +datum=WGS84 +no_defs" )
	PROJ4 string that represents a geographic coord sys. More...
const QString	GEOWKT
	Wkt string that represents a geographic coord sys. More...
const QString	PROJECT_SCALES

Function Documentation

qgsCalloc()

void* 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 126 of file qgis.cpp.

qgsFree()

void qgsFree

(

void *

ptr

)

Frees the memory space pointed to by ptr.

Works like C free().

Parameters

ptr	pointer to memory space

Definition at line 141 of file qgis.cpp.

qgsMalloc()

void* 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 111 of file qgis.cpp.

qgsPermissiveToDouble()

double qgsPermissiveToDouble	(	QString	string,
		bool &	ok
	)

Converts a string to a double in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators.

Parameters

string	string to convert
ok	will be set to true if conversion was successful

Returns

string converted to double if possible

Since

QGIS 2.9

See also

permissiveToInt

Definition at line 97 of file qgis.cpp.

qgsPermissiveToInt()

int qgsPermissiveToInt	(	QString	string,
		bool &	ok
	)

Converts a string to an integer in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators.

Parameters

string	string to convert
ok	will be set to true if conversion was successful

Returns

string converted to int if possible

Since

QGIS 2.9

See also

permissiveToDouble

Definition at line 104 of file qgis.cpp.

qgsVariantGreaterThan()

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 214 of file qgis.cpp.

qgsVariantLessThan()

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 146 of file qgis.cpp.

qgsVsiPrefix()

QString qgsVsiPrefix

(

const QString &

path

)

Definition at line 219 of file qgis.cpp.

qHash()

uint qHash

(

const QVariant &

variant

)

Hash for QVariant.

Definition at line 236 of file qgis.cpp.

Variable Documentation

GEO_EPSG_CRS_AUTHID

const QString GEO_EPSG_CRS_AUTHID = QStringLiteral( "EPSG:4326" )

Geographic coord sys from EPSG authority.

Definition at line 69 of file qgis.cpp.

GEO_NONE

const QString GEO_NONE = QStringLiteral( "NONE" )

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

Definition at line 71 of file qgis.cpp.

GEOPROJ4

const QString GEOPROJ4 = QStringLiteral( "+proj=longlat +datum=WGS84 +no_defs" )

PROJ4 string that represents a geographic coord sys.

Definition at line 50 of file qgis.cpp.

GEOWKT

const QString GEOWKT

Initial value:

=
  "GEOGCS[\"WGS 84\", "
  "  DATUM[\"WGS_1984\", "
  "    SPHEROID[\"WGS 84\",6378137,298.257223563, "
  "      AUTHORITY[\"EPSG\",7030]], "
  "    TOWGS84[0,0,0,0,0,0,0], "
  "    AUTHORITY[\"EPSG\",6326]], "
  "  PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",8901]], "
  "  UNIT[\"DMSH\",0.0174532925199433,AUTHORITY[\"EPSG\",9108]], "
  "  AXIS[\"Lat\",NORTH], "
  "  AXIS[\"Long\",EAST], "
  "  AUTHORITY[\"EPSG\",4326]]"

Wkt string that represents a geographic coord sys.

Since

QGIS GEOWkt

Definition at line 52 of file qgis.cpp.

PROJECT_SCALES

const QString PROJECT_SCALES

Initial value:

=
  "1:1000000,1:500000,1:250000,1:100000,1:50000,1:25000,"
  "1:10000,1:5000,1:2500,1:1000,1:500"

Definition at line 65 of file qgis.cpp.