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 |
 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.
- 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::QgsProviderExtentCalcEvent | ( | QgsRectangle * | layerExtent | ) |
Definition at line 22 of file qgsproviderextentcalcevent.cpp.
Member Function Documentation
◆ layerExtent()
| QgsRectangle * QgsProviderExtentCalcEvent::layerExtent | ( | ) | const |
Definition at line 30 of file qgsproviderextentcalcevent.cpp.
The documentation for this class was generated from the following files:
- /tmp/buildd/qgis-2.18.21+99unstable/src/core/qgsproviderextentcalcevent.h
- /tmp/buildd/qgis-2.18.21+99unstable/src/core/qgsproviderextentcalcevent.cpp
