IlvDefaultTreeGadgetLFHandler Class Reference

Object look-and-feel class. More...

#include <ilviews/gadgets/tree.h>

Inheritance diagram for IlvDefaultTreeGadgetLFHandler:

Public Member Functions
virtual void	drawBackground (const IlvTreeGadget *, IlvPort *, const IlvTransformer *, const IlvRegion *) const
	Is called to draw the background of a tree gadget. More...
virtual void	drawButton (const IlvTreeGadget *, IlvPort *dst, const IlvTreeGadgetItem *item, const IlvRect &bbox, const IlvRegion *clip) const
	Is called to draw the expand/collapse button of a tree gadget item. More...
virtual void	drawFrame (const IlvTreeGadget *, IlvPort *, const IlvTransformer *, const IlvRegion *) const
	Is called to draw the frame of a tree gadget. More...
virtual void	drawGadgetContents (const IlvTreeGadget *, IlvPort *, const IlvTransformer *, const IlvRegion *) const
	Is called to draw the contents of a tree gadget. More...
virtual void	drawGadgetItem (const IlvTreeGadget *, const IlvTreeGadgetItem *, IlvPort *port, const IlvRect &rect, const IlvTransformer *t, const IlvRegion *clip) const
	Is called to draw a tree gadget item. More...
virtual const IlvPalette *	getWindowBackground (const IlvTreeGadget *) const
	Returns the palette used to draw the background of the tree gadget. More...
virtual IlBoolean	handleGadgetEvent (IlvTreeGadget *, IlvEvent &event) const
	Is called to handle the events of a tree gadget. More...
virtual void	invalidateItem (IlvTreeGadget *tree, IlvGadgetItem *item, const IlvGadgetItemGeometry &previousSize, const IlvGadgetItemGeometry &currentSize) const
	is called per GadgetItem in the tree to calculate and invalidate area for the next redraw. More...
Public Member Functions inherited from IlvTreeGadgetLFHandler
	IlvTreeGadgetLFHandler (IlvLookFeelHandler *lfh)
	Constructor. More...
virtual IlvPalette *	getLinkPalette (const IlvTreeGadget *tree) const =0
	Returns the palette used to draw the links of the tree gadget. More...

Detailed Description

Object look-and-feel class.

Library: ilvadvgdt

The predefined object look-and-feel handlers of the tree gadget are subclasses of this class. It defines several methods of the base class that are common to all predefined looks.

Member Function Documentation

drawBackground()

virtual void IlvDefaultTreeGadgetLFHandler::drawBackground ( const IlvTreeGadget *  tree, IlvPort *  dst, const IlvTransformer *  t, const IlvRegion *  clip  ) const

virtual

Is called to draw the background of a tree gadget.

Parameters

tree	The tree gadget.
dst	The destination port.
t	The transformer.
clip	The clipping region.

Implements IlvTreeGadgetLFHandler.

drawButton()

virtual void IlvDefaultTreeGadgetLFHandler::drawButton ( const IlvTreeGadget *  tree, IlvPort *  dst, const IlvTreeGadgetItem *  item, const IlvRect &  bbox, const IlvRegion *  clip  ) const

virtual

Is called to draw the expand/collapse button of a tree gadget item.

Parameters

tree	The tree gadget.
dst	The destination port.
item	The tree gadget item being drawn.
bbox	The rectangle where to draw the button.
clip	The clipping region.

Implements IlvTreeGadgetLFHandler.

Reimplemented in IlvTreeGadgetCSSLFHandler.

drawFrame()

virtual void IlvDefaultTreeGadgetLFHandler::drawFrame ( const IlvTreeGadget *  tree, IlvPort *  dst, const IlvTransformer *  t, const IlvRegion *  clip  ) const

virtual

Is called to draw the frame of a tree gadget.

Parameters

tree	The tree gadget.
dst	The destination port.
t	The transformer.
clip	The clipping region.

Implements IlvTreeGadgetLFHandler.

drawGadgetContents()

virtual void IlvDefaultTreeGadgetLFHandler::drawGadgetContents ( const IlvTreeGadget *  tree, IlvPort *  dst, const IlvTransformer *  t, const IlvRegion *  clip  ) const

virtual

Is called to draw the contents of a tree gadget.

Parameters

tree	The tree gadget.
dst	The destination port.
t	The transformer.
clip	The clipping region.

Implements IlvTreeGadgetLFHandler.

drawGadgetItem()

virtual void IlvDefaultTreeGadgetLFHandler::drawGadgetItem ( const IlvTreeGadget *  tree, const IlvTreeGadgetItem *  item, IlvPort *  dst, const IlvRect &  bbox, const IlvTransformer *  t, const IlvRegion *  clip  ) const

virtual

Is called to draw a tree gadget item.

Parameters

tree	The tree gadget.
item	The tree gadget item to draw.
dst	The destination port.
bbox	The rectangle where to draw the item.
t	The transformer. Not Used.
clip	The clipping region.

Implements IlvTreeGadgetLFHandler.

Reimplemented in IlvTreeGadgetCSSLFHandler.

getWindowBackground()

virtual const IlvPalette* IlvDefaultTreeGadgetLFHandler::getWindowBackground ( const IlvTreeGadget *  tree ) const

virtual

Returns the palette used to draw the background of the tree gadget.

Parameters

tree	The tree gadget.

Returns

The palette used to draw the background of the tree gadget.

Implements IlvTreeGadgetLFHandler.

handleGadgetEvent()

virtual IlBoolean IlvDefaultTreeGadgetLFHandler::handleGadgetEvent ( IlvTreeGadget *  tree, IlvEvent &  event  ) const

virtual

Is called to handle the events of a tree gadget.

Parameters

tree	The tree gadget.
event	The event to handle.

Returns

IlTrue if the event has been consumed.

Implements IlvTreeGadgetLFHandler.

invalidateItem()

virtual void IlvDefaultTreeGadgetLFHandler::invalidateItem ( IlvTreeGadget *  tree, IlvGadgetItem *  item, const IlvGadgetItemGeometry &  previousSize, const IlvGadgetItemGeometry &  currentSize  ) const

virtual

is called per GadgetItem in the tree to calculate and invalidate area for the next redraw.

Parameters

item	The item in the tree gadget.
previousSize	the previous size of the GadgetItem.
currentSize	the current size of the GadgetItem.

Implements IlvTreeGadgetLFHandler.

Reimplemented in IlvTreeGadgetCSSLFHandler.