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/*=========================================================================
Program: Visualization Toolkit
Module: vtkContinuousValueWidget.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
// .NAME vtkContinuousValueWidget - set a value by manipulating something
// .SECTION Description
// The vtkContinuousValueWidget is used to adjust a scalar value in an
// application. Note that the actual appearance of the widget depends on
// the specific representation for the widget.
//
// To use this widget, set the widget representation. (the details may
// vary depending on the particulars of the representation).
//
//
// .SECTION Event Bindings
// By default, the widget responds to the following VTK events (i.e., it
// watches the vtkRenderWindowInteractor for these events):
// <pre>
// If the slider bead is selected:
// LeftButtonPressEvent - select slider
// LeftButtonReleaseEvent - release slider
// MouseMoveEvent - move slider
// </pre>
//
// Note that the event bindings described above can be changed using this
// class's vtkWidgetEventTranslator. This class translates VTK events
// into the vtkContinuousValueWidget's widget events:
// <pre>
// vtkWidgetEvent::Select -- some part of the widget has been selected
// vtkWidgetEvent::EndSelect -- the selection process has completed
// vtkWidgetEvent::Move -- a request for slider motion has been invoked
// </pre>
//
// In turn, when these widget events are processed, the vtkContinuousValueWidget
// invokes the following VTK events on itself (which observers can listen for):
// <pre>
// vtkCommand::StartInteractionEvent (on vtkWidgetEvent::Select)
// vtkCommand::EndInteractionEvent (on vtkWidgetEvent::EndSelect)
// vtkCommand::InteractionEvent (on vtkWidgetEvent::Move)
// </pre>
//
#ifndef __vtkContinuousValueWidget_h
#define __vtkContinuousValueWidget_h
#include "vtkAbstractWidget.h"
class vtkContinuousValueWidgetRepresentation;
class VTK_WIDGETS_EXPORT vtkContinuousValueWidget : public vtkAbstractWidget
{
public:
// Description:
// Standard macros.
vtkTypeMacro(vtkContinuousValueWidget,vtkAbstractWidget);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Specify an instance of vtkWidgetRepresentation used to represent this
// widget in the scene. Note that the representation is a subclass of vtkProp
// so it can be added to the renderer independent of the widget.
void SetRepresentation(vtkContinuousValueWidgetRepresentation *r)
{this->Superclass::SetWidgetRepresentation
(reinterpret_cast<vtkWidgetRepresentation*>(r));}
// Description:
// Get the value for this widget.
double GetValue();
void SetValue(double v);
protected:
vtkContinuousValueWidget();
~vtkContinuousValueWidget() {}
// These are the events that are handled
static void SelectAction(vtkAbstractWidget*);
static void EndSelectAction(vtkAbstractWidget*);
static void MoveAction(vtkAbstractWidget*);
//BTX - manage the state of the widget
int WidgetState;
enum _WidgetState
{
Start=0,
Highlighting,
Adjusting
};
//ETX
double Value;
private:
vtkContinuousValueWidget(const vtkContinuousValueWidget&); //Not implemented
void operator=(const vtkContinuousValueWidget&); //Not implemented
};
#endif