src/core/qgis.cpp File Reference

#include "qgis.h"
#include "qgsversion.h"
#include <QCoreApplication>
#include <QDate>
#include <QTime>
#include <QDateTime>
#include "qgsconfig.h"
#include "qgslogger.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.
void	qgsFree (void *ptr)
	Frees the memory space pointed to by ptr.
void *	qgsMalloc (size_t size)
	Allocates size bytes and returns a pointer to the allocated memory.
bool	qgsVariantGreaterThan (const QVariant &lhs, const QVariant &rhs)
bool	qgsVariantLessThan (const QVariant &lhs, const QVariant &rhs)
Variables
const CORE_EXPORT QString	GEO_EPSG_CRS_AUTHID = "EPSG:4326"
	Geographic coord sys from EPSG authority.
const CORE_EXPORT QString	GEO_NONE = "NONE"
	Constant that holds the string representation for "No ellips/No CRS".
const CORE_EXPORT QString	GEOPROJ4 = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"
	PROJ4 string that represents a geographic coord sys.
const CORE_EXPORT QString	GEOWKT = " AUTHORITY[\"EPSG\",4326]]"
	Wkt string that represents a geographic coord sys.
const CORE_EXPORT QString	PROJECT_SCALES = "1:10000,1:5000,1:2500,1:1000,1:500"

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Function Documentation

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.

References QgsDebugMsg, and qgsMalloc().

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.

Referenced by QgsRasterBlock::convert(), QgsRasterBlock::reset(), QgsRasterBlock::setImage(), QgsRasterFileWriter::writeImageRaster(), and QgsRasterBlock::~QgsRasterBlock().

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.

References QgsDebugMsg.

Referenced by QgsRasterBlock::convert(), QgsRasterBlock::createNoDataBitmap(), qgsCalloc(), QgsRasterBlock::reset(), and QgsRasterFileWriter::writeImageRaster().

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

Definition at line 173 of file qgis.cpp.

References qgsVariantLessThan().

Referenced by QgsSymbolLayerV2Utils::sortVariantList(), and valueGreaterThan().

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

Definition at line 146 of file qgis.cpp.

Referenced by qgsVariantGreaterThan(), QgsSymbolLayerV2Utils::sortVariantList(), and valueLessThan().

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Variable Documentation

const CORE_EXPORT QString GEO_EPSG_CRS_AUTHID = "EPSG:4326"

Geographic coord sys from EPSG authority.

Definition at line 70 of file qgis.cpp.

Referenced by QgsOWSSourceSelect::on_mChangeCRSButton_clicked(), QgsOWSSourceSelect::populateCRS(), QgsNewVectorLayerDialog::QgsNewVectorLayerDialog(), QgsVectorLayer::setCoordinateSystem(), and QgsCoordinateReferenceSystem::validate().

const CORE_EXPORT QString GEO_NONE = "NONE"

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

Definition at line 72 of file qgis.cpp.

Referenced by QgsDistanceArea::bearing(), QgsDistanceArea::computePolygonArea(), QgsDistanceArea::convertMeasurement(), QgsMapToolIdentify::featureDerivedAttributes(), QgsDistanceArea::measureLine(), QgsDistanceArea::measurePolygon(), QgsAttributeDialog::QgsAttributeDialog(), QgsDistanceArea::QgsDistanceArea(), and QgsDistanceArea::setEllipsoid().

const CORE_EXPORT QString GEOPROJ4 = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"

PROJ4 string that represents a geographic coord sys.

Definition at line 50 of file qgis.cpp.

const CORE_EXPORT QString GEOWKT = " AUTHORITY[\"EPSG\",4326]]"

Wkt string that represents a geographic coord sys.

Note:

added in 1.8 to replace GEOWkt

Definition at line 53 of file qgis.cpp.

const CORE_EXPORT QString PROJECT_SCALES = "1:10000,1:5000,1:2500,1:1000,1:500"

Definition at line 66 of file qgis.cpp.

Referenced by QgsScaleComboBox::updateScales().