/*
 *  libcaca       ASCII-Art library
 *  Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org>
 *                All Rights Reserved
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the Do What The Fuck You Want To
 *  Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */

/** \file caca_internals.h
 *  \version \$Id$
 *  \author Sam Hocevar <sam@zoy.org>
 *  \brief The \e libcaca private header.
 *
 *  This header contains the private types and functions used by \e libcaca.
 */

#ifndef __CACA_INTERNALS_H__
#define __CACA_INTERNALS_H__

#if defined(USE_GL)
#   include <GL/glut.h>
#endif
#if defined(USE_NCURSES)
#   if defined(HAVE_NCURSES_H)
#       include <ncurses.h>
#   else
#       include <curses.h>
#   endif
#endif
#if defined(USE_WIN32)
#   include <windows.h>
#endif
#if defined(USE_X11)
#   include <X11/Xlib.h>
#endif

/* Graphics driver */
enum caca_driver
{
#if defined(USE_CONIO)
    CACA_DRIVER_CONIO = 1,
#endif
#if defined(USE_NCURSES)
    CACA_DRIVER_NCURSES = 2,
#endif
#if defined(USE_SLANG)
    CACA_DRIVER_SLANG = 3,
#endif
#if defined(USE_X11)
    CACA_DRIVER_X11 = 4,
#endif
#if defined(USE_WIN32)
    CACA_DRIVER_WIN32 = 5,
#endif
#if defined(USE_GL)
    CACA_DRIVER_GL = 6,
#endif
    CACA_DRIVER_NONE = 0
};

/* Available drivers */
#if defined(USE_CONIO)
void conio_init_driver(caca_t *);
#endif
#if defined(USE_GL)
void gl_init_driver(caca_t *);
#endif
#if defined(USE_NCURSES)
void ncurses_init_driver(caca_t *);
#endif
#if defined(USE_SLANG)
void slang_init_driver(caca_t *);
#endif
#if defined(USE_WIN32)
void win32_init_driver(caca_t *);
#endif
#if defined(USE_X11)
void x11_init_driver(caca_t *);
#endif

/* Timer structure */
struct caca_timer
{
    int last_sec, last_usec;
};

/* Internal caca context */
struct caca_context
{
    cucul_t *qq;

    struct driver
    {
        enum caca_driver driver;

        int (* init_graphics) (caca_t *);
        int (* end_graphics) (caca_t *);
        int (* set_window_title) (caca_t *, char const *);
        unsigned int (* get_window_width) (caca_t *);
        unsigned int (* get_window_height) (caca_t *);
        void (* display) (caca_t *);
        void (* handle_resize) (caca_t *);
    } driver;

    unsigned int width, height;

    int resize;
    int resize_event;

    unsigned int delay, rendertime;
    struct caca_timer timer;
    int lastticks;

    struct events
    {
#if defined(USE_SLANG) || defined(USE_NCURSES)
        struct caca_timer key_timer;
        unsigned int last_key_ticks;
        unsigned int autorepeat_ticks;
        unsigned int last_key;
#endif
    } events;

#if defined(USE_X11) && !defined(_DOXYGEN_SKIP_ME)
    struct x11
    {
        Display *dpy;
        Window window;
        Pixmap pixmap;
        GC gc;
        long int event_mask;
        int font_width, font_height;
        unsigned int new_width, new_height;
        int colors[16];
        Font font;
        XFontStruct *font_struct;
        int font_offset;
#if defined(HAVE_X11_XKBLIB_H)
        Bool autorepeat;
#endif
    } x11;
#endif
#if defined(USE_NCURSES)
    struct ncurses
    {
        int attr[16*16];
        mmask_t oldmask;
    } ncurses;
#endif
#if defined(USE_CONIO)
    struct conio
    {
        struct text_info ti;
        char *screen;
    } conio;
#endif
#if defined(USE_WIN32)
    struct win32
    {
        HANDLE hin, hout;
        HANDLE front, back;
        CHAR_INFO *buffer;
    } win32;
#endif
#if defined(USE_GL)
    struct gl
    {
        int window;
        unsigned int width, height;
        float font_width, font_height;
        float incx, incy;
        int id[94];
        unsigned char resized, bit;
        unsigned char mouse_changed, mouse_clicked;
        unsigned int mouse_x, mouse_y;
        unsigned int mouse_button, mouse_state;

        unsigned char key;
        int special_key;
        int new_width;
        int new_height;

        float sw, sh;
    } gl;
#endif
};

/* Initialisation functions */
extern int _caca_init_graphics(caca_t *kk);
extern int _caca_end_graphics(caca_t *kk);

/* Timer functions */
extern void _caca_sleep(unsigned int);
extern unsigned int _caca_getticks(struct caca_timer *);

/* Cached screen size */
extern unsigned int _caca_width;
extern unsigned int _caca_height;
extern int _caca_resize;
extern int _caca_resize_event;

#endif /* __CACA_INTERNALS_H__ */