/*
  fonts.h
*/

#ifndef FONTS_H
#define FONTS_H

// plan to rip this out as soon as it is considered stable
//#define THREADED_FONTS
#define FORKED_FONTS
#ifdef WIN32
#undef FORKED_FONTS
#endif



#include "SDL.h"
#include "SDL_ttf.h"

#include "compiler.h"

#ifndef FORKED_FONTS
#include "SDL_thread.h"
#include "SDL_mutex.h"
#else
/* This shouldn't really be here :-)
 * Move into 'fonts.c' and the code in 'tuxpaint.c' 
 * that uses this lot should be put into 'fonts.c' as well.
 */
#define SDL_CreateThread(fn,vp) (void*)(long)(fn(vp))
#define SDL_WaitThread(tid,rcp) do{(void)tid;(void)rcp;}while(0)
#define SDL_Thread int
#define SDL_mutex int
#define SDL_CreateMutex() 0  // creates in released state
#define SDL_DestroyMutex(lock)
#define SDL_mutexP(lock)  // take lock
#define SDL_mutexV(lock)  // release lock
#endif

extern SDL_Thread *font_thread;

extern volatile long font_thread_done, font_thread_aborted;
extern volatile long waiting_for_fonts;
extern int font_scanner_pid;
extern int font_socket_fd;

extern int no_system_fonts;
extern int was_bad_font;


TTF_Font *BUGFIX_TTF_OpenFont206(const char * const file, int ptsize);
#define TTF_OpenFont    BUGFIX_TTF_OpenFont206

TTF_Font *try_alternate_font(int size);
TTF_Font *load_locale_font(TTF_Font *fallback, int size);
int load_user_fonts(SDL_Surface * screen, void *vp);

#ifdef FORKED_FONTS
void reliable_write(int fd, const void *buf, size_t count);
void reliable_read(int fd, void *buf, size_t count);
void run_font_scanner(SDL_Surface * screen);
void receive_some_font_info(SDL_Surface * screen);
#endif

//////////////////////////////////////////////////////////////////////
// font stuff

// example from a Debian box with MS fonts:
// start with 232 files
// remove "Cursor", "Webdings", "Dingbats", "Standard Symbols L"
// split "Condensed" faces out into own family
// group by family
// end up with 34 user choices

extern int text_state;
extern unsigned text_size;

// nice progression (alternating 33% and 25%) 9 12 18 24 36 48 72 96 144 192
// commonly hinted sizes seem to be: 9, 10, 12, 14, 18, 20 (less so), 24
// reasonable: 9,12,18... and 10,14,18...
static int text_sizes[] = {9, 12, 18, 24, 36, 48,
                           56, 64, 96, 112, 128, 160};  // point sizes
#define MIN_TEXT_SIZE 0u
#define MAX_TEXT_SIZE (sizeof text_sizes / sizeof text_sizes[0] - 1)

// for sorting through the font files at startup
typedef struct style_info {
  char *filename;
  char *directory;
  char *family;    // name like "FooCorp Thunderstruck"
  char *style;     // junk like "Oblique Demi-Bold"
  int italic;
  int boldness;
  int score;
  int truetype; // Is it? (TrueType gets priority)
} style_info;

// user's notion of a font
typedef struct family_info {
  char *directory;
  char *family;
  char *filename[4];
  TTF_Font *handle;
  int score;
} family_info;

extern TTF_Font * medium_font, * small_font, * large_font, * locale_font;

extern family_info **user_font_families;
extern int num_font_families;
extern int num_font_families_max;

extern style_info **user_font_styles;
extern int num_font_styles;
extern int num_font_styles_max;


int compar_fontgroup(const void *v1, const void *v2);
int compar_fontkiller(const void *v1, const void *v2);
int compar_fontscore(const void *v1, const void *v2);
void parse_font_style(style_info *si);
void groupfonts_range(style_info **base, int count);
void dupe_markdown_range(family_info **base, int count);
void groupfonts(void);
TTF_Font *getfonthandle(int desire);
void loadfonts(SDL_Surface * screen, const char * const dir);

int do_surfcmp(const SDL_Surface *const *const v1, const SDL_Surface *const *const v2);
int surfcmp(const void *s1, const void *s2);
int charset_works(TTF_Font *font, const char *s);

#endif