1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkButtonWidget.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.
=========================================================================*/
// .NAME vtkButtonWidget - activate an n-state button
// .SECTION Description
// The vtkButtonWidget is used to interface with an n-state button. That is
// each selection moves to the next button state (e.g., moves from "on" to
// "off"). The widget uses modulo list traversal to transition through one or
// more states. (A single state is simply a "selection" event; traversal
// through the list can be in the forward or backward direction.)
//
// Depending on the nature of the representation the appearance of the button
// can change dramatically, the specifics of appearance changes are a
// function of the associated vtkButtonRepresentation (or subclass).
//
// .SECTION Event Bindings
// By default, the widget responds to the following VTK events (i.e., it
// watches the vtkRenderWindowInteractor for these events):
// <pre>
// LeftButtonPressEvent - select button
// LeftButtonReleaseEvent - end the button selection process
// </pre>
//
// Note that the event bindings described above can be changed using this
// class's vtkWidgetEventTranslator. This class translates VTK events
// into the vtkButtonWidget's widget events:
// <pre>
// vtkWidgetEvent::Select -- some part of the widget has been selected
// vtkWidgetEvent::EndSelect -- the selection process has completed
// </pre>
//
// In turn, when these widget events are processed, the vtkButtonWidget
// invokes the following VTK events on itself (which observers can listen for):
// <pre>
// vtkCommand::StateChangedEvent (on vtkWidgetEvent::EndSelect)
// </pre>
//
#ifndef vtkButtonWidget_h
#define vtkButtonWidget_h
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkAbstractWidget.h"
class vtkButtonRepresentation;
class VTKINTERACTIONWIDGETS_EXPORT vtkButtonWidget : public vtkAbstractWidget
{
public:
// Description:
// Instantiate the class.
static vtkButtonWidget *New();
// Description:
// Standard macros.
vtkTypeMacro(vtkButtonWidget,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(vtkButtonRepresentation *r)
{this->Superclass::SetWidgetRepresentation(reinterpret_cast<vtkWidgetRepresentation*>(r));}
// Description:
// Return the representation as a vtkButtonRepresentation.
vtkButtonRepresentation *GetSliderRepresentation()
{return reinterpret_cast<vtkButtonRepresentation*>(this->WidgetRep);}
// Description:
// Create the default widget representation if one is not set.
void CreateDefaultRepresentation();
protected:
vtkButtonWidget();
~vtkButtonWidget() {}
// These are the events that are handled
static void SelectAction(vtkAbstractWidget*);
static void MoveAction(vtkAbstractWidget*);
static void EndSelectAction(vtkAbstractWidget*);
//BTX - manage the state of the widget
int WidgetState;
enum _WidgetState
{
Start=0,
Hovering,
Selecting
};
//ETX
private:
vtkButtonWidget(const vtkButtonWidget&); //Not implemented
void operator=(const vtkButtonWidget&); //Not implemented
};
#endif
|
