QgsProviderExtentCalcEvent Class Reference

A custom event that is designed to be fired when a layer extent has been fully calculated. More...

#include <qgsproviderextentcalcevent.h>

Inheritance diagram for QgsProviderExtentCalcEvent:

Public Member Functions
	QgsProviderExtentCalcEvent (QgsRectangle *layerExtent)
QgsRectangle *	layerExtent () const
Public Member Functions inherited from QEvent
	QEvent (Type type)
virtual	~QEvent ()
void	accept ()
void	ignore ()
bool	isAccepted () const
void	setAccepted (bool accepted)
bool	spontaneous () const
Type	type () const

Additional Inherited Members
Static Public Member Functions inherited from QEvent
int	registerEventType (int hint)
Properties inherited from QEvent
	accepted

Detailed Description

A custom event that is designed to be fired when a layer extent has been fully calculated.

Author

Brendan Morley

Date

March 2005

This custom QEvent is designed to be fired when the full extent of a layer has been calculated. It was initially included in QGIS to help the QgsPostgresProvider provide the asynchronous calculation of PostgreSQL layer extents.

Events are used instead of Qt signals/slots as events can be received asynchronously, which makes for better mutlithreading behaviour and less opportunity for programmer mishap.

Definition at line 42 of file qgsproviderextentcalcevent.h.

Constructor & Destructor Documentation

QgsProviderExtentCalcEvent::QgsProviderExtentCalcEvent

(

QgsRectangle *

layerExtent

)

Definition at line 22 of file qgsproviderextentcalcevent.cpp.

Member Function Documentation

QgsRectangle * QgsProviderExtentCalcEvent::layerExtent

(

)

const

Definition at line 30 of file qgsproviderextentcalcevent.cpp.

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The documentation for this class was generated from the following files:

• /tmp/buildd/qgis-2.12.0+99unstable/src/core/qgsproviderextentcalcevent.h
• /tmp/buildd/qgis-2.12.0+99unstable/src/core/qgsproviderextentcalcevent.cpp