FontManager.cpp

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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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#include <vlGraphics/FontManager.hpp>
#include <vlCore/Log.hpp>
#include <algorithm>

#include "ft2build.h"
#include FT_FREETYPE_H

using namespace vl;

//-----------------------------------------------------------------------------
FontManager::FontManager(void* free_type_library)
{
  mFreeTypeLibrary = free_type_library;
  if (!free_type_library)
  {
    FT_Library freetype = NULL;
    FT_Error error = FT_Init_FreeType( &freetype );
    mFreeTypeLibrary = freetype;
    if ( error )
    {
      Log::error("FontManager::FontManager(): an error occurred during FreeType library initialization!\n");
      VL_TRAP()
    }
  }
}
//-----------------------------------------------------------------------------
FontManager::~FontManager()
{
  releaseAllFonts();
  if (mFreeTypeLibrary)
  {
    FT_Done_FreeType( (FT_Library)mFreeTypeLibrary );
    mFreeTypeLibrary = NULL;
  }
}
//-----------------------------------------------------------------------------
Font* FontManager::acquireFont(const String& path, int size, bool smooth)
{
  ref<Font> font;
  for(unsigned i=0; !font && i<mFonts.size(); ++i)
    if (fonts()[i]->filePath() == path && fonts()[i]->size() == size && fonts()[i]->smooth() == smooth)
      font = fonts()[i];

  if (!font)
  {
    font = new Font(this);
    font->loadFont(path);
    font->setSize(size);
    font->setSmooth(smooth);
    mFonts.push_back( font );
  }

  return font.get();
}
//-----------------------------------------------------------------------------
void FontManager::releaseFont(Font* font)
{
  std::vector< ref<Font> >::iterator it = std::find(mFonts.begin(), mFonts.end(), font);
  if (it != mFonts.end())
    mFonts.erase(it);
}
//-----------------------------------------------------------------------------
void FontManager::releaseAllFonts()
{
  for(unsigned i=0; i<mFonts.size(); ++i)
    mFonts[i]->releaseFreeTypeData();
}
//-----------------------------------------------------------------------------