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vtkFreeTypeLabelRenderStrategy.h
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vtkFreeTypeLabelRenderStrategy.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkFreeTypeLabelRenderStrategy.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 vtkFreeTypeLabelRenderStrategy - Renders labels with freetype
//
// .SECTION Description
// Uses the FreeType to render labels and compute label sizes.
// This strategy may be used with vtkLabelPlacementMapper.
#ifndef __vtkFreeTypeLabelRenderStrategy_h
#define __vtkFreeTypeLabelRenderStrategy_h
#include "vtkRenderingLabelModule.h" // For export macro
#include "vtkLabelRenderStrategy.h"
class vtkActor2D;
class vtkFreeTypeUtilities;
class vtkTextMapper;
class VTKRENDERINGLABEL_EXPORT vtkFreeTypeLabelRenderStrategy : public vtkLabelRenderStrategy
{
public:
void PrintSelf(ostream& os, vtkIndent indent);
vtkTypeMacro(vtkFreeTypeLabelRenderStrategy, vtkLabelRenderStrategy);
static vtkFreeTypeLabelRenderStrategy* New();
// Description:
// The free type render strategy currently does not support rotation.
virtual bool SupportsRotation()
{ return false; }
// Description:
// The free type render strategy currently does not support bounded size labels.
virtual bool SupportsBoundedSize()
{ return false; }
// Description:
// Compute the bounds of a label. Must be performed after the renderer is set.
virtual void ComputeLabelBounds(vtkTextProperty* tprop, vtkStdString label, double bds[4])
{ this->Superclass::ComputeLabelBounds(tprop, label, bds); }
virtual void ComputeLabelBounds(vtkTextProperty* tprop, vtkUnicodeString label, double bds[4]);
// Description:
// Render a label at a location in world coordinates.
// Must be performed between StartFrame() and EndFrame() calls.
virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label)
{ this->Superclass::RenderLabel(x, tprop, label); }
virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label, int width)
{ this->Superclass::RenderLabel(x, tprop, label, width); }
virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkUnicodeString label);
virtual void RenderLabel(int x[2], vtkTextProperty* tprop, vtkUnicodeString label, int width)
{ this->Superclass::RenderLabel(x, tprop, label, width); }
// Description:
// Release any graphics resources that are being consumed by this strategy.
// The parameter window could be used to determine which graphic
// resources to release.
virtual void ReleaseGraphicsResources(vtkWindow *window);
protected:
vtkFreeTypeLabelRenderStrategy();
~vtkFreeTypeLabelRenderStrategy();
vtkFreeTypeUtilities* FreeTypeUtilities;
vtkTextMapper* Mapper;
vtkActor2D* Actor;
private:
vtkFreeTypeLabelRenderStrategy(const vtkFreeTypeLabelRenderStrategy&); // Not implemented.
void operator=(const vtkFreeTypeLabelRenderStrategy&); // Not implemented.
};
#endif