IlvRegionOptimizer Class Reference

Utility class to optimize a region. More...

#include <ilviews/base/region.h>

List of all members.

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

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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.

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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.