IlvPathDrawingData Class Reference

Graphic path related class. More...

#include <ilviews/graphics/path.h>

Inheritance diagram for IlvPathDrawingData:

Public Member Functions
	IlvPathDrawingData (IlUInt step, IlvGraphic *object)
	Constructor. More...
const IlvRegion *	getClip () const
	Returns the clipping region used for drawings. More...
IlvPort *	getPort () const
	Returns the port used as the destination for drawings. More...
void	initDraw (const IlvGraphicPath *gp, const IlvPointArray *transformed, IlvPort *port, const IlvTransformer *tr, const IlvRegion *reg)
	Initializes the object. More...
virtual void	setBackground (IlvColor *background)
	Sets the background color. More...
virtual void	setForeground (IlvColor *foreground)
	Sets the foreground color. More...
virtual void	setMode (IlvDrawMode mode)
	Sets the drawing mode. More...
virtual void	setPalette (IlvPalette *palette)
	Sets the palette. More...
Public Member Functions inherited from IlvPathSteppingData
IlFloat	getAngle () const
	Gets the angle of the current step. More...
IlUInt	getCurPath () const
	Gets the current path. More...
const IlvPoint *	getCurPosition () const
	Gets the coordinates of a point on the current segment. More...
IlUInt	getCurSegment () const
	Gets the current segment in the current path. More...
const IlvGraphicPath *	getGraphicPath () const
	Gets the graphic path. More...
const IlvPointArray *	getTransformedPaths () const
	Gets an array of transformed IlvPointArray. More...
const IlvTransformer *	getTransformer () const
	Gets the current transformer. More...
IlAny	getUserArg () const
	Gets the user-defined value given to the constructor. More...
IlUInt	getUserStep () const
	Gets the step used in stepping. More...
virtual void	init (const IlvGraphicPath *gp, const IlvPointArray *transformed, const IlvTransformer *tr)
	Reinitializes the drawing data. More...
virtual void	stepping ()
	Implements the algorithm to travel along the graphic path. More...

Protected Member Functions
virtual IlBoolean	doIt ()
	Draws the object returned by IlvPathSteppingData::getUserArg. More...
Protected Member Functions inherited from IlvPathSteppingData
	IlvPathSteppingData (IlUInt userStep, IlAny userArg)
	Constructor. More...
virtual IlBoolean	acceptPath ()
	Protected Member Function. More...
virtual IlBoolean	beginStepping ()
	Begins the travelling operation. More...
virtual void	endStepping ()
	Begins the travelling operation. More...

Detailed Description

Graphic path related class.

Library: views

The IlvPathDrawingData class allows you to repeatedly draw a given IlvGraphic along an IlvGraphicPath. This additional drawing is automatically performed by IlvGraphicPath::draw when an IlvPathDrawingData is attached to a graphic path.

See Also

IlvGraphicPath.

Constructor & Destructor Documentation

IlvPathDrawingData::IlvPathDrawingData	(	IlUInt	step,
		IlvGraphic *	object
	)

Constructor.

The constructor initializes a new IlvPathDrawingData object with a stepping distance of step, and a graphic object to be drawn set to object.
The parameter object is stored in the data member _userArg in order to be used by the stepping mechanism.

object is not deleted by the IlvPathDrawingData destructor.

Parameters

step	The stepping distance.
object	The graphic object to be drawn.

Member Function Documentation

virtual IlBoolean IlvPathDrawingData::doIt ( )

protectedvirtual

Draws the object returned by IlvPathSteppingData::getUserArg.

Draws the object returned by IlvPathSteppingData::getUserArg (which is a pointer to the parameter graphic of the constructor) at the position specified by IlvPathSteppingData::getCurPosition and with a rotation specified by IlvPathSteppingData::getAngle.

Returns

IlTrue to carry on the drawing, and IlFalse to stop it. The default implementation always returns IlTrue.

Implements IlvPathSteppingData.

const IlvRegion* IlvPathDrawingData::getClip

(

)

const

Returns the clipping region used for drawings.

Returns the clipping region used for drawings.

Returns

The clipping region used for drawings.

IlvPort* IlvPathDrawingData::getPort

(

)

const

Returns the port used as the destination for drawings.

Returns

The port used as the destination for drawings.

void IlvPathDrawingData::initDraw	(	const IlvGraphicPath *	gp,
		const IlvPointArray *	transformed,
		IlvPort *	port,
		const IlvTransformer *	tr,
		const IlvRegion *	reg
	)

Initializes the object.

Used internally by IlvGraphicPath to initialize the IlvPathDrawingData before each call to IlvPathSteppingData::stepping.

Parameters

gp	The graphic path.
transformed	The array of transformed IlvPointArray.
port	The destination port where the drawings are performed.
tr	The transformer to be applied to gp.
reg	The clipping region.

virtual void IlvPathDrawingData::setBackground ( IlvColor *  background )

virtual

Sets the background color.

The default implementation of this method does not do anything. It is called by the member function IlvGraphicPath::setBackground. You can allow your subclasses to propagate resource modifications of the graphic path to the graphic object stored by IlvPathDrawingData.

See Also

IlvGraphicPath.

virtual void IlvPathDrawingData::setForeground ( IlvColor *  foreground )

virtual

Sets the foreground color.

The default implementation of this method does not do anything. It is called by the member function IlvGraphicPath::setForeground. You can allow your subclasses to propagate resource modifications of the graphic path to the graphic object stored by IlvPathDrawingData.

See Also

IlvGraphicPath.

virtual void IlvPathDrawingData::setMode ( IlvDrawMode  mode )

virtual

Sets the drawing mode.

The default implementation of this method does not do anything. It is called by the member function IlvGraphicPath::setMode. You can allow your subclasses to propagate resource modifications of the graphic path to the graphic object stored by IlvPathDrawingData.

See Also

IlvGraphicPath.

virtual void IlvPathDrawingData::setPalette ( IlvPalette *  palette )

virtual

Sets the palette.

The default implementation of this method does not do anything. It is called by the member function IlvGraphicPath::setPalette. You can allow your subclasses to propagate resource modifications of the graphic path to the graphic object stored by IlvPathDrawingData.

See Also

IlvGraphicPath.