VTK  9.1.0
vtkObserverMediator.h
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1/*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: vtkObserverMediator.h
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14=========================================================================*/
31#ifndef vtkObserverMediator_h
32#define vtkObserverMediator_h
33
34#include "vtkObject.h"
35#include "vtkRenderingCoreModule.h" // For export macro
36
39class vtkObserverMap;
40
41class VTKRENDERINGCORE_EXPORT vtkObserverMediator : public vtkObject
42{
43public:
48
50
54 void PrintSelf(ostream& os, vtkIndent indent) override;
56
58
63 vtkGetObjectMacro(Interactor, vtkRenderWindowInteractor);
65
71 int RequestCursorShape(vtkInteractorObserver*, int requestedShape);
72
77
78protected:
81
82 // The render window whose cursor we are controlling
84
85 // A map whose key is the observer*, and whose data value is a cursor
86 // request. Note that a special compare function is used to sort the
87 // widgets based on the observer's priority.
88 vtkObserverMap* ObserverMap; // given a widget*, return its data
89
90 // The current observer and cursor shape
93
94private:
96 void operator=(const vtkObserverMediator&) = delete;
97};
98
99#endif
a simple class to control print indentation
Definition: vtkIndent.h:113
an abstract superclass for classes observing events invoked by vtkRenderWindowInteractor
abstract base class for most VTK objects
Definition: vtkObject.h:82
manage contention for cursors and other resources
void RemoveAllCursorShapeRequests(vtkInteractorObserver *)
Remove all requests for cursor shape from a given interactor.
static vtkObserverMediator * New()
Instantiate the class.
void PrintSelf(ostream &os, vtkIndent indent) override
Standard macros.
int RequestCursorShape(vtkInteractorObserver *, int requestedShape)
Method used to request a cursor shape.
void SetInteractor(vtkRenderWindowInteractor *iren)
Specify the instance of vtkRenderWindow whose cursor shape is to be managed.
vtkRenderWindowInteractor * Interactor
~vtkObserverMediator() override
vtkObserverMap * ObserverMap
vtkInteractorObserver * CurrentObserver
platform-independent render window interaction including picking and frame rate control.