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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.
=========================================================================*/
// .NAME vtkTextRepresentation - represent text for vtkTextWidget
// .SECTION Description
// 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.
// .SECTION See Also
// vtkTextRepresentation vtkBorderWidget vtkAbstractWidget vtkWidgetRepresentation
#ifndef __vtkTextRepresentation_h
#define __vtkTextRepresentation_h
#include "vtkBorderRepresentation.h"
class vtkRenderer;
class vtkTextActor;
class vtkTextProperty;
class vtkTextRepresentationObserver;
class VTK_WIDGETS_EXPORT vtkTextRepresentation : public vtkBorderRepresentation
{
public:
// Description:
// Instantiate class.
static vtkTextRepresentation *New();
// Description:
// Standard VTK methods.
vtkTypeMacro(vtkTextRepresentation,vtkBorderRepresentation);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Specify the vtkTextActor to manage. If not specified, then one
// is automatically created.
void SetTextActor(vtkTextActor *textActor);
vtkGetObjectMacro(TextActor,vtkTextActor);
// Description:
// Get/Set the text string display by this representation.
void SetText(const char* text);
const char* GetText();
// Description:
// Satisfy the superclasses API.
virtual void BuildRepresentation();
virtual void GetSize(double size[2])
{size[0]=2.0; size[1]=2.0;}
// Description:
// These methods are necessary to make this representation behave as
// a vtkProp.
virtual void GetActors2D(vtkPropCollection*);
virtual void ReleaseGraphicsResources(vtkWindow*);
virtual int RenderOverlay(vtkViewport*);
virtual int RenderOpaqueGeometry(vtkViewport*);
virtual int RenderTranslucentPolygonalGeometry(vtkViewport*);
virtual int HasTranslucentPolygonalGeometry();
//BTX
enum
{
AnyLocation = 0,
LowerLeftCorner,
LowerRightCorner,
LowerCenter,
UpperLeftCorner,
UpperRightCorner,
UpperCenter
};
//ETX
// Description:
// 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);
// Description:
// Set the text position, by overiding the same function of
// vtkBorderRepresentation so that the Modified() will be called.
virtual void SetPosition(double x, double y);
virtual void SetPosition(double pos[2])
{ this->SetPosition(pos[0], pos[1]);};
// Description:
// Internal. Excecute 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();
// 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&); //Not implemented
void operator=(const vtkTextRepresentation&); //Not implemented
};
#endif