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/*=========================================================================
Program: Visualization Toolkit
Module: vtkFontConfigFreeTypeTools.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 vtkFontConfigFreeTypeTools - Subclass of vtkFreeTypeTools that uses
// system installed fonts.
//
// .SECTION Description
// vtkFontConfigFreeTypeTools defers to vtkFreeTypeTools for rendering and
// rasterization, but sources fonts from a FontConfig system lookup. If the
// lookup fails, the compiled fonts of vtkFreeType are used instead.
//
// .SECTION Caveats
// Do not instantiate this class directly. Rather, call
// vtkFreeTypeTools::GetInstance() to ensure that the singleton design is
// correctly applied.
// Be aware that FontConfig lookup is disabled by default. To enable, call
// vtkFreeTypeTools::GetInstance()->ForceCompiledFontsOff();
#ifndef __vtkFontConfigFreeTypeTools_h
#define __vtkFontConfigFreeTypeTools_h
#include "vtkRenderingFreeTypeFontConfigModule.h" // For export macro
#include "vtkFreeTypeTools.h"
class VTKRENDERINGFREETYPEFONTCONFIG_EXPORT vtkFontConfigFreeTypeTools:
public vtkFreeTypeTools
{
public:
vtkTypeMacro(vtkFontConfigFreeTypeTools, vtkFreeTypeTools);
virtual void PrintSelf(ostream &os, vtkIndent indent);
// Description:
// Creates a new object of this type, but it is not preferred to use this
// method directly. Instead, call vtkFreeTypeTools::GetInstance() and let
// the object factory create a new instance. In this way the singleton
// pattern of vtkFreeTypeTools is preserved.
static vtkFontConfigFreeTypeTools *New();
// Description:
// Modified version of vtkFreeTypeTools::LookupFace that locates FontConfig
// faces. Falls back to the Superclass method for compiled fonts if the
// FontConfig lookup fails.
static bool LookupFaceFontConfig(vtkTextProperty *tprop, FT_Library lib,
FT_Face *face);
protected:
vtkFontConfigFreeTypeTools();
~vtkFontConfigFreeTypeTools();
// Description:
// Reimplemented from Superclass to use the FontConfig face lookup callback.
FT_Error CreateFTCManager();
private:
vtkFontConfigFreeTypeTools(const vtkFontConfigFreeTypeTools &); // Not implemented.
void operator=(const vtkFontConfigFreeTypeTools &); // Not implemented.
};
#endif //__vtkFontConfigFreeTypeTools_h
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