IlvRegionOptimizer Class Reference

Utility class to optimize a region. More...

#include <ilviews/base/region.h>

Public Member Functions
	IlvRegionOptimizer ()
	Creates a new IlvRegionOptimizer instance.
virtual IlBoolean	finalize (IlvRegion &region) const
	Is called to optimize the specified region. More...
virtual IlBoolean	optimize (IlvRegion &region, const IlvRect &rect) const
	Is called to optimize the specified region. More...

Detailed Description

Utility class to optimize a region.

Library: display

This class lets you define the precise way a region should be optimized. Optimizing a region is done each time a region is modified, and just before the drawing of this region occurs.

Member Function Documentation

virtual IlBoolean IlvRegionOptimizer::finalize ( IlvRegion &  region ) const

virtual

Is called to optimize the specified region.

This member function is called before a graphic holder requests an update of its refresh area (what part of the views must be redrawn).

Parameters

region

The refresh region that must be updated by this member function.

Returns

IlTrue if a change is performed on region and IlFalse otherwise.

virtual IlBoolean IlvRegionOptimizer::optimize ( IlvRegion &  region, const IlvRect &  rect  ) const

virtual

Is called to optimize the specified region.

This member function is called each time a graphic holder modifies its update region by adding a new rectangle to it.

Parameters

region	The refresh region that must be updated by this member function.
rect	The rectangle to add.

Returns

IlTrue if a change is performed on region and IlFalse otherwise.