IlvScrollBarLFHandler Class Reference

Object Look-and-Feel class. More...

#include <ilviews/gadgets/scrollb.h>

Inheritance diagram for IlvScrollBarLFHandler:

Public Member Functions
	IlvScrollBarLFHandler (IlvLookFeelHandler *lfh)
	Constructor. More...
virtual void	computeBBox (const IlvScrollBar *sb, IlvRect &arrow1, IlvRect &internal, IlvRect &arrow2, IlvRect &thumb, const IlvTransformer *t) const =0
	Is called to compute the bounding boxes of the scroll bar parts. More...
virtual void	drawArrow (const IlvScrollBar *sb, IlvPosition position, IlvPort *dst, const IlvRect &arrow, const IlvRegion *clip) const =0
	Is called to draw the arrows of a scroll bar. More...
virtual void	drawBackground (const IlvScrollBar *sb, IlvPort *dst, const IlvTransformer *t, const IlvRegion *clip) const =0
	Is called to draw the background of a scroll bar. More...
virtual void	drawContents (const IlvScrollBar *sb, IlvPort *dst, const IlvTransformer *t, const IlvRegion *clip) const =0
	Is called to draw the contents of a scroll bar. More...
virtual void	drawFrame (const IlvScrollBar *sb, IlvPort *dst, const IlvTransformer *t, const IlvRegion *clip) const =0
	Is called to draw the frame of a scroll bar. More...
virtual void	drawInternal (const IlvScrollBar *sb, IlvPort *dst, const IlvRect &internal, const IlvRect &thumb, const IlvRegion *clip) const =0
	Is called to draw the internal part of a scroll bar. More...
virtual IlBoolean	handleEvent (IlvScrollBar *sb, IlvEvent &event) const =0
	Is called to handle the events of a scroll bar. More...
virtual IlBoolean	isValidPosition (const IlvScrollBar *sb, const IlvPoint &point, const IlvTransformer *t) const =0
	Indicates whether a given position is valid for the scroll bar. More...

Detailed Description

Object Look-and-Feel class.

Library: ilvgadgt

The base class for the object look-and-feel handlers of the scroll bar.

Constructor & Destructor Documentation

IlvScrollBarLFHandler()

IlvScrollBarLFHandler::IlvScrollBarLFHandler

(

IlvLookFeelHandler *

lfh

)

Constructor.

Creates a new IlvScrollBarLFHandler instance and initializes it with lfh.

Parameters

lfh	The look-and-feel handler which this handler will be associated to.

Member Function Documentation

computeBBox()

virtual void IlvScrollBarLFHandler::computeBBox ( const IlvScrollBar *  sb, IlvRect &  arrow1, IlvRect &  internal, IlvRect &  arrow2, IlvRect &  thumb, const IlvTransformer *  t  ) const

pure virtual

Is called to compute the bounding boxes of the scroll bar parts.

Parameters

sb	The scroll bar.
arrow1	The rectangle of the left/top arrow.
internal	The rectangle of the internal part.
arrow2	The rectangle of the right/bottom arrow.
thumb	The rectangle of the thumb.
t	The transformer.

Implemented in IlvScrollBarWLFHandler, IlvScrollBarMLFHandler, IlvScrollBarW95LFHandler, and IlvScrollBarVXLFHandler.

drawArrow()

virtual void IlvScrollBarLFHandler::drawArrow ( const IlvScrollBar *  sb, IlvPosition  position, IlvPort *  dst, const IlvRect &  arrow, const IlvRegion *  clip  ) const

pure virtual

Is called to draw the arrows of a scroll bar.

Parameters

sb	The scroll bar.
position	The orientation of the arrow.
dst	The destination port.
arrow	The bounding rectangle of the arrow.
clip	The clipping region.

Implemented in IlvScrollBarWLFHandler, IlvScrollBarMLFHandler, IlvScrollBarW95LFHandler, and IlvScrollBarVXLFHandler.

drawBackground()

virtual void IlvScrollBarLFHandler::drawBackground ( const IlvScrollBar *  sb, IlvPort *  dst, const IlvTransformer *  t, const IlvRegion *  clip  ) const

pure virtual

Is called to draw the background of a scroll bar.

Parameters

sb	The scroll bar.
dst	The destination port.
t	The transformer.
clip	The clipping region.

Implemented in IlvScrollBarWLFHandler, IlvScrollBarW95LFHandler, IlvScrollBarVXLFHandler, and IlvScrollBarMLFHandler.

drawContents()

virtual void IlvScrollBarLFHandler::drawContents ( const IlvScrollBar *  sb, IlvPort *  dst, const IlvTransformer *  t, const IlvRegion *  clip  ) const

pure virtual

Is called to draw the contents of a scroll bar.

Parameters

sb	The scroll bar.
dst	The destination port.
t	The transformer.
clip	The clipping region.

Implemented in IlvDefaultScrollBarLFHandler, IlvScrollBarWLFHandler, and IlvScrollBarMLFHandler.

drawFrame()

virtual void IlvScrollBarLFHandler::drawFrame ( const IlvScrollBar *  sb, IlvPort *  dst, const IlvTransformer *  t, const IlvRegion *  clip  ) const

pure virtual

Is called to draw the frame of a scroll bar.

Parameters

sb	The scroll bar.
dst	The destination port.
t	The transformer.
clip	The clipping region.

Implemented in IlvScrollBarWLFHandler, IlvScrollBarW95LFHandler, IlvScrollBarVXLFHandler, and IlvScrollBarMLFHandler.

drawInternal()

virtual void IlvScrollBarLFHandler::drawInternal ( const IlvScrollBar *  sb, IlvPort *  dst, const IlvRect &  internal, const IlvRect &  thumb, const IlvRegion *  clip  ) const

pure virtual

Is called to draw the internal part of a scroll bar.

Parameters

sb	The scroll bar.
dst	The destination port.
internal	The bounding rectangle of the internal part.
thumb	The bounding rectangle of the thumb. This rectangle must be included into internal.
clip	The clipping region.

Implemented in IlvScrollBarWLFHandler, IlvScrollBarMLFHandler, IlvScrollBarW95LFHandler, and IlvScrollBarVXLFHandler.

handleEvent()

virtual IlBoolean IlvScrollBarLFHandler::handleEvent ( IlvScrollBar *  sb, IlvEvent &  event  ) const

pure virtual

Is called to handle the events of a scroll bar.

Parameters

sb	The scroll bar.
event	The event to handle.

Returns

IlTrue if the event has been consumed.

Implemented in IlvDefaultScrollBarLFHandler.

isValidPosition()

virtual IlBoolean IlvScrollBarLFHandler::isValidPosition ( const IlvScrollBar *  sb, const IlvPoint &  point, const IlvTransformer *  t  ) const

pure virtual

Indicates whether a given position is valid for the scroll bar.

Parameters

sb	The scroll bar.
point	The position.
t	The transformer.

Implemented in IlvScrollBarWLFHandler, IlvScrollBarW95LFHandler, IlvScrollBarVXLFHandler, and IlvScrollBarMLFHandler.