source: orxonox.OLD/branches/blink/src/lib/graphics/text_engine/text_engine.cc

/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Benjamin Grauer
   co-programmer: ...

   for some fonts and licenses visit: =http://www.dafont.com/en/font.php=

   !! IMPORTANT !! When using ttf fonts clear the license issues prior to
   adding them to orxonox. This is really important, because we do not
   want to offend anyone.
*/

#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS

#include "text_engine.h"
#include "text.h"
#include "font.h"



#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "graphics_engine.h"

#include "debug.h"
///////////////////
/// TEXT-ENGINE ///
///////////////////
ObjectListDefinition(TextEngine);
/**
 *  standard constructor
*/
TextEngine::TextEngine ()
{
  this->registerObject(this, TextEngine::_objectList);
  this->setName("TextEngine");
  this->enableFonts();
}

/**
 *  the singleton reference to this class
*/
TextEngine* TextEngine::singletonRef = NULL;

/**
 *  standard deconstructor

*/
TextEngine::~TextEngine ()
{
  // first remove all the remaining Texts (if any).
  while (!Text::objectList().empty())
    delete Text::objectList().front();
  // delete all remaining fonts (There should not be Anything to do here)

  //const std::list<BaseObject*>* fontList = ClassList::getList(CL_FONT);
  //if (fontList != NULL)
  {
    ///FIXME
    //    while (fontList->size() > 0)
    {
      //      Font* font = dynamic_cast<Font*>(fontList->back());
      //if (likely(font != Font::getDefaultFont()))
      //        ResourceManager::getInstance()->unload(font, RP_GAME);
    }
  }
  this->disableFonts();

  TextEngine::singletonRef = NULL;
}

/**
 *  function to enable TTF_Fonts
*/
void TextEngine::enableFonts()
{
  if (!TTF_WasInit())
  {
    if(TTF_Init()==-1)
      PRINTF(1)("TTF_Init: %s\n", TTF_GetError());

    TextEngine::checkVersion();
  }
  else
    PRINTF(4)("Fonts already initialized\n");
}

/**
 *  function to disable TTF_fonts
 */
void TextEngine::disableFonts()
{
  if (TTF_WasInit())
  {
    //      Font::removeDefaultFont();
    TTF_Quit();
  }
  else
    PRINTF(4)("Fonts were not initialized.\n");
}

/**
 *  outputs some nice Debug information
 *
 * @todo there should also be something outputted about Font
 */
void TextEngine::debug() const
{
  PRINT(0)("+-------------------------------+\n");
  PRINT(0)("+ TEXT ENGINE DEBUG INFORMATION +\n");
  PRINT(0)("+-------------------------------+\n");
  PRINT(0)("Reference: %p; Text Counts: %d\n", this, Text::objectList().size());

  for (ObjectList<Text>::const_iterator it = Text::objectList().begin();
       it != Text::objectList().end();
       ++it)
  {
      (*it)->debug();
    PRINT(0)("+---------------------------TE--+\n");
  }
}


/**
 *  checks if the compiled version and the local version of SDL_ttf match.
 * @returns true if match, false otherwise
*/
bool TextEngine::checkVersion()
{
  SDL_version compile_version;
  SDL_version link_version;
  TTF_VERSION(&compile_version);
  link_version = *TTF_Linked_Version();

  if (compile_version.major == link_version.major &&
      compile_version.minor == link_version.minor &&
      compile_version.patch == link_version.patch)
  {
    return true;
  }
  else
  {
    PRINTF(2)("compiled with SDL_ttf version: %d.%d.%d\n",
              compile_version.major,
              compile_version.minor,
              compile_version.patch);

    PRINTF(2)("running with SDL_ttf version: %d.%d.%d\n",
              link_version.major,
              link_version.minor,
              link_version.patch);
    return false;
  }
}