/* bzflag
 * Copyright (c) 1993-2017 Tim Riker
 *
 * This package is free software;  you can redistribute it and/or
 * modify it under the terms of the license found in the file
 * named COPYING that should have accompanied this file.
 *
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef _FONT_MANAGER_H_
#define _FONT_MANAGER_H_

#include <map>
#include <string>
#include <vector>

#include "Singleton.h"
#include "bzfgl.h"
#include "AnsiCodes.h"

class ImageFont;

typedef std::map<int, ImageFont*> FontSizeMap;
typedef std::vector<FontSizeMap>    FontFaceList;
typedef std::map<std::string, int>  FontFaceMap;

class FontManager : public Singleton<FontManager> {
public:
  FontManager();
  ~FontManager();

  void loadAll(std::string dir);

  void clear();

  void rebuild(void);

  int getFaceID(std::string faceName);

  int getNumFaces(void);
  const char* getFaceName(int faceID);

  void drawString(float x, float y, float z, int faceID, float size,
		  const std::string &text,
		  const float* resetColor = NULL);
  void drawString(float x, float y, float z, const std::string &face,
		  float size, const std::string &text,
		  const float* resetColor = NULL);

  float getStrLength(int faceID, float size, const std::string &text,
		     bool alreadyStripped = false);
  float getStrLength(const std::string &face, float size,
		     const std::string &text, bool alreadyStripped = false);

  float getStrHeight(int faceID, float size, const std::string &text);
  float getStrHeight(std::string face, float size, const std::string &text);

  void setDimFactor(float newDimFactor);
  void setOpacity(float newOpacity);
  void setDarkness(float newDimFactor);

  void unloadAll(void);

protected:
  friend class Singleton<FontManager>;

private:
  void		getPulseColor(const GLfloat* color, GLfloat* pulseColor) const;
  ImageFont*	getClosestSize(int faceID, float size, bool bigger);
  ImageFont*	getClosestRealSize(int faceID, float desiredSize, float &actualSize);
  FontFaceMap	faceNames;
  FontFaceList  fontFaces;

  std::string	fontDirectory;

  float		opacity;
  float		dimFactor; // ANSI code dimming
  float		darkness;  // darkening of all colors

  static void	callback(const std::string& name, void *);
  static void	freeContext(void *data);
  static void	initContext(void *data);
  static GLfloat underlineColor[4];

  bool		canScale;
};

inline void FontManager::setDimFactor(float newDimFactor)
{
  dimFactor = newDimFactor;
}

inline void FontManager::setOpacity(float newOpacity)
{
  opacity = newOpacity;
  underlineColor[3] = opacity;
}

inline void FontManager::setDarkness(float newDarkness)
{
  darkness = newDarkness;
}

#endif //_FONT_MANAGER_H_

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