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vtkTextRepresentation.h
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vtkTextRepresentation.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTextRepresentation.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.
=========================================================================*/
/**
* @class vtkTextRepresentation
* @brief represent text for vtkTextWidget
*
* This class represents text for a vtkTextWidget. This class provides
* support for interactively placing text on the 2D overlay plane. The text
* is defined by an instance of vtkTextActor.
*
* @sa
* vtkTextRepresentation vtkBorderWidget vtkAbstractWidget vtkWidgetRepresentation
*/
#ifndef vtkTextRepresentation_h
#define vtkTextRepresentation_h
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkBorderRepresentation.h"
class vtkRenderer;
class vtkTextActor;
class vtkTextProperty;
class vtkTextRepresentationObserver;
class VTKINTERACTIONWIDGETS_EXPORT vtkTextRepresentation : public vtkBorderRepresentation
{
public:
/**
* Instantiate class.
*/
static vtkTextRepresentation *New();
//@{
/**
* Standard VTK methods.
*/
vtkTypeMacro(vtkTextRepresentation,vtkBorderRepresentation);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@}
//@{
/**
* Specify the vtkTextActor to manage. If not specified, then one
* is automatically created.
*/
void SetTextActor(vtkTextActor *textActor);
vtkGetObjectMacro(TextActor,vtkTextActor);
//@}
//@{
/**
* Get/Set the text string display by this representation.
*/
void SetText(const char* text);
const char* GetText();
//@}
/**
* Satisfy the superclasses API.
*/
void BuildRepresentation() override;
void GetSize(double size[2]) override
{size[0]=2.0; size[1]=2.0;}
//@{
/**
* These methods are necessary to make this representation behave as
* a vtkProp.
*/
void GetActors2D(vtkPropCollection*) override;
void ReleaseGraphicsResources(vtkWindow*) override;
int RenderOverlay(vtkViewport*) override;
int RenderOpaqueGeometry(vtkViewport*) override;
int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
vtkTypeBool HasTranslucentPolygonalGeometry() override;
//@}
enum
{
AnyLocation = 0,
LowerLeftCorner,
LowerRightCorner,
LowerCenter,
UpperLeftCorner,
UpperRightCorner,
UpperCenter
};
//@{
/**
* Set the text position, by enumeration (
* AnyLocation = 0,
* LowerLeftCorner,
* LowerRightCorner,
* LowerCenter,
* UpperLeftCorner,
* UpperRightCorner,
* UpperCenter)
* related to the render window
*/
virtual void SetWindowLocation(int enumLocation);
vtkGetMacro(WindowLocation, int);
//@}
//@{
/**
* Set the text position, by overriding the same function of
* vtkBorderRepresentation so that the Modified() will be called.
*/
void SetPosition(double x, double y) override;
void SetPosition(double pos[2]) override
{ this->SetPosition(pos[0], pos[1]);};
//@}
//@{
/**
* Internal. Execute events observed by internal observer
*/
void ExecuteTextPropertyModifiedEvent(vtkObject* obj, unsigned long enumEvent, void* p);
void ExecuteTextActorModifiedEvent(vtkObject* obj, unsigned long enumEvent, void* p);
//@}
protected:
vtkTextRepresentation();
~vtkTextRepresentation() override;
// Initialize text actor
virtual void InitializeTextActor();
// Check and adjust boundaries according to the size of the text
virtual void CheckTextBoundary();
// the text to manage
vtkTextActor *TextActor;
vtkTextProperty *TextProperty;
// Window location by enumeration
int WindowLocation;
virtual void UpdateWindowLocation();
// observer to observe internal TextActor and TextProperty
vtkTextRepresentationObserver *Observer;
private:
vtkTextRepresentation(const vtkTextRepresentation&) = delete;
void operator=(const vtkTextRepresentation&) = delete;
};
#endif