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

#include <ilviews/gadgets/tree.h>

Inheritance diagram for IlvTreeGadgetLFHandler:

Public Member Functions
	IlvTreeGadgetLFHandler (IlvLookFeelHandler *lfh)
	Constructor. More...

virtual void	drawBackground (const IlvTreeGadget tree, IlvPort dst, const IlvTransformer t, const IlvRegion clip) const =0
	Is called to draw the background of a tree gadget. More...

virtual void	drawButton (const IlvTreeGadget tree, IlvPort dst, const IlvTreeGadgetItem item, const IlvRect &bbox, const IlvRegion clip) const =0
	Is called to draw the expand/collapse button of a tree gadget item. More...

virtual void	drawFrame (const IlvTreeGadget tree, IlvPort dst, const IlvTransformer t, const IlvRegion clip) const =0
	Is called to draw the frame of a tree gadget. More...

virtual void	drawGadgetContents (const IlvTreeGadget tree, IlvPort dst, const IlvTransformer t, const IlvRegion clip) const =0
	Is called to draw the contents of a tree gadget. More...

virtual void	drawGadgetItem (const IlvTreeGadget tree, const IlvTreeGadgetItem item, IlvPort dst, const IlvRect &bbox, const IlvTransformer t, const IlvRegion *clip) const =0
	Is called to draw a tree gadget item. More...

virtual IlvPalette *	getLinkPalette (const IlvTreeGadget *tree) const =0
	Returns the palette used to draw the links of the tree gadget. More...

virtual const IlvPalette *	getWindowBackground (const IlvTreeGadget *tree) const =0
	Returns the palette used to draw the background of the tree gadget. More...

virtual IlBoolean	handleGadgetEvent (IlvTreeGadget *tree, IlvEvent &event) const =0
	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 =0
	is called per GadgetItem in the tree to calculate and invalidate area for the next redraw. More...

Detailed Description

Object Look-and-Feel class.

Library: ilvadvgdt

The base class for the object look-and-feel handlers of the tree gadget.

Constructor & Destructor Documentation

◆ IlvTreeGadgetLFHandler()

IlvTreeGadgetLFHandler::IlvTreeGadgetLFHandler ( IlvLookFeelHandler * lfh )

Constructor.

Initializes a new IlvTreeGadgetLFHandler instance.

Parameters

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

Member Function Documentation

◆ drawBackground()

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

pure 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.

Implemented in IlvDefaultTreeGadgetLFHandler.

◆ drawButton()

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

pure 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.

Implemented in IlvTreeGadgetCSSLFHandler, and IlvDefaultTreeGadgetLFHandler.

◆ drawFrame()

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

pure 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.

Implemented in IlvDefaultTreeGadgetLFHandler.

◆ drawGadgetContents()

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

pure 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.

Implemented in IlvDefaultTreeGadgetLFHandler.

◆ drawGadgetItem()

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

pure 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.

Implemented in IlvTreeGadgetCSSLFHandler, and IlvDefaultTreeGadgetLFHandler.

◆ getLinkPalette()

virtual IlvPalette* IlvTreeGadgetLFHandler::getLinkPalette ( const IlvTreeGadget * tree ) const

pure virtual

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

Parameters

tree	The tree gadget.

Returns: The palette used to draw the links of the tree gadget.

Implemented in IlvTreeGadgetWLFHandler, IlvTreeGadgetW95LFHandler, IlvTreeGadgetVXLFHandler, IlvTreeGadgetMLFHandler, and IlvTreeGadgetCSSLFHandler.

◆ getWindowBackground()

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

pure 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.

Implemented in IlvDefaultTreeGadgetLFHandler.

◆ handleGadgetEvent()

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

pure 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.

Implemented in IlvDefaultTreeGadgetLFHandler.

◆ invalidateItem()

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

pure 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.

Implemented in IlvTreeGadgetCSSLFHandler, and IlvDefaultTreeGadgetLFHandler.

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ IlvTreeGadgetLFHandler()

Member Function Documentation

◆ drawBackground()

◆ drawButton()

◆ drawFrame()

◆ drawGadgetContents()

◆ drawGadgetItem()

◆ getLinkPalette()

◆ getWindowBackground()

◆ handleGadgetEvent()

◆ invalidateItem()