QgsProviderExtentCalcEvent Class Reference

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

#include <qgsproviderextentcalcevent.h>

Public Member Functions
	QgsProviderExtentCalcEvent (QgsRectangle *layerExtent)
QgsRectangle *	layerExtent () const

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.

Constructor & Destructor Documentation

QgsProviderExtentCalcEvent::QgsProviderExtentCalcEvent

(

QgsRectangle *

layerExtent

)

Member Function Documentation

QgsRectangle * QgsProviderExtentCalcEvent::layerExtent

(

)

const

---

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

• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/qgsproviderextentcalcevent.h
• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/qgsproviderextentcalcevent.cpp