IlvGanttGridViewHook Class Reference

Gantt chart grid hook class. More...

#include <ilviews/gantt/gantt.h>

Inheritance diagram for IlvGanttGridViewHook:

Public Member Functions
	IlvGanttGridViewHook (IlvGanttChart *gantt, IlvManager *mgr, IlvView *view)
	Initializes a new IlvGanttGridViewHook. More...
virtual void	beforeDraw (IlvPort *dst, const IlvTransformer *t=0, const IlvRegion *r=0, const IlvRegion *clip=0)
	Called internally by the manager before it redraws the hook view. More...
virtual void	contentsChanged ()
	Called when the contents of the manager are changed. More...
virtual void	drawGrid (IlvPort *dst, const IlvRegion *clip=0)
	Calls the Gantt member function drawGrid() and then sets the skip-compute flag to IlTrue. More...
void	skipCompute (IlBoolean flag)
	Sets the skip-compute flag. More...
virtual void	transformerChanged (const IlvTransformer *current, const IlvTransformer *previous)
	Called when you change the transformer of the view to which this hook is connected. More...

Detailed Description

Gantt chart grid hook class.

Library: ilvgantt
An IlvGanttGridViewHook object is connected to each of the four views managed by the Gantt grapher. This hook is used to draw a grid in the grapher views.

See also

IlvGanttChart, IlvManagerViewHook.

Constructor & Destructor Documentation

IlvGanttGridViewHook()

IlvGanttGridViewHook::IlvGanttGridViewHook	(	IlvGanttChart *	gantt,
		IlvManager *	mgr,
		IlvView *	view
	)

Initializes a new IlvGanttGridViewHook.

Parameters

gantt	The Gantt chart.
mgr	The manager.
view	The view.

Member Function Documentation

beforeDraw()

virtual void IlvGanttGridViewHook::beforeDraw ( IlvPort *  dst, const IlvTransformer *  t = 0, const IlvRegion *  r = 0, const IlvRegion *  clip = 0  )

virtual

Called internally by the manager before it redraws the hook view.

The default implementation calls the member function drawGrid().

Parameters

dst	The port to draw to.
t	The transformer applied to the view where the event occurred.
r	The areas that are to be refreshed, in the view coordinate system.
clip	The clipping region.

Reimplemented from IlvManagerViewHook.

contentsChanged()

virtual void IlvGanttGridViewHook::contentsChanged ( )

virtual

Called when the contents of the manager are changed.

The default implementation sets the skip-compute flag to IlFalse.

Reimplemented from IlvManagerViewHook.

drawGrid()

virtual void IlvGanttGridViewHook::drawGrid ( IlvPort *  dst, const IlvRegion *  clip = 0  )

virtual

Calls the Gantt member function drawGrid() and then sets the skip-compute flag to IlTrue.

Parameters

dst	The port to draw to.
clip	The clipping region.

skipCompute()

void IlvGanttGridViewHook::skipCompute

(

IlBoolean

flag

)

Sets the skip-compute flag.

Parameters

flag	If IlTrue, the Gantt chart does not recompute the grid points before drawing the grid.

transformerChanged()

virtual void IlvGanttGridViewHook::transformerChanged ( const IlvTransformer *  current, const IlvTransformer *  previous  )

virtual

Called when you change the transformer of the view to which this hook is connected.

The default implementation sets the skip-compute flag to IlFalse.

Parameters

current	The current transformer.
previous	The previous transformer.

Reimplemented from IlvManagerViewHook.