IlvGanttDragDropInteractor Class Reference

Interactor to drag and drop nodes and subnode. More...

#include <ilviews/gantt/ganttint.h>

Inheritance diagram for IlvGanttDragDropInteractor:

Public Member Functions
	IlvGanttDragDropInteractor (IlvView *target=0, IlvGraphic *ghost=0)
	Constructor. More...
virtual void	doIt (IlvView *target, IlvGraphic *ghost, const IlvPoint &p)
	Performs the drop action. More...
virtual void	dropNode (const IlvGanttNode *source, IlInt *startMinArray, IlInt *startMaxArray, IlInt *endMinArray, IlInt *endMaxArray, IlvGanttLine **lines, IlUShort *capacities)
	Action method called when the user drops the dragged object. More...
virtual void	dropSubNode (IlvGanttNode *dst, IlUShort idx, IlInt startMin, IlInt startMax, IlInt endMin, IlInt endMax, IlvGanttLine *line, IlUShort capacity)
	Action method called when the user drops the dragged object. More...
IlvGanttChart *	getGanttChart (const IlvGraphic *obj) const
	Returns the Gantt chart managing a given object. More...
IlvGanttChart *	getTargetGanttChart (const IlvView *targetView) const
	Returns the Gantt chart associated to a target view. More...
virtual IlvGanttNode *	makeNode (const IlvGanttNode *source, IlInt *startMinArray, IlInt *startMaxArray, IlInt *endMinArray, IlInt *endMaxArray, IlvGanttLine **lines, IlUShort *capacities)
	Factory method to create Gantt nodes. More...
virtual IlvGanttSubNode *	makeSubNode (IlvGanttNode *dst, IlInt startMin, IlInt startMax, IlInt endMin, IlInt endMax, IlvGanttLine *line, IlUShort capacity)
	Factory method to create Gantt subnodes. More...

Detailed Description

Interactor to drag and drop nodes and subnode.

Library: ilvgantt

Use the IlvGanttDragDropInteractor class to give a Gantt subnode or node the possibility of being dragged to another view, then dropped and duplicated. This interactor is attached by default to all subnodes stored in the Gantt grapher. The drag is performed on the graphic representation the Gantt subnode. You can specify that the whole node must be duplicated by keeping the CTRL key pressed when clicking on the subnode.

The registered name of this interactor is "GanttDragDrop".

See also

IlvGanttChart, IlvGanttSubNode, IlvGanttNode.

Constructor & Destructor Documentation

IlvGanttDragDropInteractor()

IlvGanttDragDropInteractor::IlvGanttDragDropInteractor	(	IlvView *	target = 0,
		IlvGraphic *	ghost = 0
	)

Constructor.

The constructor specifies the target view where the object can be dropped. If a graphic object is specified for the ghost parameter, this object is used by the interactor as a ghost image during the interaction. Otherwise, the object to be drawn is the one being dragged.

Parameters

target	The target view.
ghost	The graphic object used as ghost image.

Member Function Documentation

doIt()

virtual void IlvGanttDragDropInteractor::doIt ( IlvView *  target, IlvGraphic *  ghost, const IlvPoint &  p  )

virtual

Performs the drop action.

If the Ctrl key is pressed, the IlvGanttDragDropInteractor::dropNode is called, otherwise the IlvGanttDragDropInteractor::dropSubNode is called.

Parameters

target	The target view where the mouse button is released.
ghost	The graphic object being dropped.
p	The coordinates of drop location in screen coordinates.

Reimplemented from IlvDragDropInteractor.

dropNode()

virtual void IlvGanttDragDropInteractor::dropNode ( const IlvGanttNode *  source, IlInt *  startMinArray, IlInt *  startMaxArray, IlInt *  endMinArray, IlInt *  endMaxArray, IlvGanttLine **  lines, IlUShort *  capacities  )

virtual

Action method called when the user drops the dragged object.

Makes a copy of the source Gantt node using the IlvGanttDragDropInteractor::makeNode method. The IlvGanttDragDropInteractor::makeSubNode method is also used to add a copy of each subnode of source into the new Gantt node. This new node is then added to the Gantt chart.

Parameters

source	The Gantt node associated with the dragged object.
startMinArray	The new earliest start times for the subnodes copy of source.
startMaxArray	The new latest start times for the subnodes copy of source.
endMinArray	The new earliest end times for the subnodes copy of source.
endMaxArray	The new latest end times for the subnodes copy of source.
lines	The new Gantt lines for the subnodes copy of source.
capacities	The capacities of the subnodes of source.

dropSubNode()

virtual void IlvGanttDragDropInteractor::dropSubNode ( IlvGanttNode *  dst, IlUShort  idx, IlInt  startMin, IlInt  startMax, IlInt  endMin, IlInt  endMax, IlvGanttLine *  line, IlUShort  capacity  )

virtual

Action method called when the user drops the dragged object.

Makes a copy of the subnode of index idx in the node dst using the IlvGanttDragDropInteractor::makeSubNode method. The subnode copy is then stored in the dst node.

Parameters

dst	The Gantt node associated with the dragged object.
idx	The index of the considered subnode in node.
startMin	The earliest start time of the subnode copy.
startMax	The latest start time of the subnode copy.
endMin	The earliest end time of the subnode copy.
endMax	The latest end time of the subnode copy.
line	The Gantt line with which the subnode copy must be associated.
capacity	The capacity of the subnode copy.

getGanttChart()

IlvGanttChart* IlvGanttDragDropInteractor::getGanttChart

(

const IlvGraphic *

obj

)

const

Returns the Gantt chart managing a given object.

Parameters

obj	The considered graphic object.

Returns

The Gantt chart managing the object obj.

getTargetGanttChart()

IlvGanttChart* IlvGanttDragDropInteractor::getTargetGanttChart

(

const IlvView *

targetView

)

const

Returns the Gantt chart associated to a target view.

Parameters

targetView

The target view.

Returns

The Gantt chart to which targetView is attached.

makeNode()

virtual IlvGanttNode* IlvGanttDragDropInteractor::makeNode ( const IlvGanttNode *  source, IlInt *  startMinArray, IlInt *  startMaxArray, IlInt *  endMinArray, IlInt *  endMaxArray, IlvGanttLine **  lines, IlUShort *  capacities  )

virtual

Factory method to create Gantt nodes.

Is designed to be overloaded when linking the Gantt with a scheduling program. The default implementation returns an empty Gantt node.

Parameters

source	The Gantt node associated with the dragged object.
startMinArray	The new earliest start times for the subnodes copy of source.
startMaxArray	The new latest start times for the subnodes copy of source.
endMinArray	The new earliest end times for the subnodes copy of source.
endMaxArray	The new latest end times for the subnodes copy of source.
lines	The new Gantt lines for the subnodes copy of source.
capacities	The capacities of the subnodes of source.

makeSubNode()

virtual IlvGanttSubNode* IlvGanttDragDropInteractor::makeSubNode ( IlvGanttNode *  dst, IlInt  startMin, IlInt  startMax, IlInt  endMin, IlInt  endMax, IlvGanttLine *  line, IlUShort  capacity  )

virtual

Factory method to create Gantt subnodes.

Is designed to be overloaded when linking the Gantt with a scheduling program. The default implementation returns a Gantt subnode initialized with the given parameters.

Parameters

dst	The Gantt node to which the created subnode will be added.
startMin	The earliest start time for the created subnode.
startMax	The latest start time for the created subnode.
endMin	The earliest end time for the created subnode.
endMax	The latest end time for the created subnode.
line	The Gantt line for the created subnode..
capacity	The capacity for the created subnode.