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