aintern.h

allego 窗口系统源码

/*         ______   ___    ___
 *        /\  _  \ /\_ \  /\_ \
 *        \ \ \L\ \\//\ \ \//\ \      __     __   _ __   ___
 *         \ \  __ \ \ \ \  \ \ \   /'__`\ /'_ `\/\`'__\/ __`\
 *          \ \ \/\ \ \_\ \_ \_\ \_/\  __//\ \L\ \ \ \//\ \L\ \
 *           \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
 *            \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
 *                                           /\____/
 *                                           \_/__/
 *
 *      Some definitions for internal use by the library code.
 *
 *      By Shawn Hargreaves.
 *
 *      See readme.txt for copyright information.
 */


#ifndef AINTERN_H
#define AINTERN_H

#ifndef ALLEGRO_H
   #error must include allegro.h first
#endif

#ifdef __cplusplus
   extern "C" {
#endif


/* flag for how many times we have been initialised */
AL_VAR(int, _allegro_count);


/* some Allegro functions need a block of scratch memory */
AL_VAR(void *, _scratch_mem);
AL_VAR(int, _scratch_mem_size);


AL_INLINE(void, _grow_scratch_mem, (int size),
{
   if (size > _scratch_mem_size) {
      size = (size+1023) & 0xFFFFFC00;
      _scratch_mem = realloc(_scratch_mem, size);
      _scratch_mem_size = size;
   }
})


/* malloc wrappers for DLL <-> application shared memory */
AL_FUNC(void *, _al_malloc, (int size));
AL_FUNC(void, _al_free, (void *mem));
AL_FUNC(void *, _al_realloc, (void *mem, int size));


/* list of functions to call at program cleanup */
AL_FUNC(void, _add_exit_func, (AL_METHOD(void, func, (void))));
AL_FUNC(void, _remove_exit_func, (AL_METHOD(void, func, (void))));


/* helper structure for talking to Unicode strings */
typedef struct UTYPE_INFO
{
   int id;
   AL_METHOD(int, u_getc, (AL_CONST char *s));
   AL_METHOD(int, u_getx, (char **s));
   AL_METHOD(int, u_setc, (char *s, int c));
   AL_METHOD(int, u_width, (AL_CONST char *s));
   AL_METHOD(int, u_cwidth, (int c));
   AL_METHOD(int, u_isok, (int c));
   int u_width_max;
} UTYPE_INFO;

AL_FUNC(UTYPE_INFO *, _find_utype, (int type));


/* message stuff */
#define ALLEGRO_MESSAGE_SIZE  4096


/* wrappers for implementing disk I/O on different platforms */
AL_FUNC(int, _al_file_isok, (AL_CONST char *filename));
AL_FUNC(long, _al_file_size, (AL_CONST char *filename));
AL_FUNC(time_t, _al_file_time, (AL_CONST char *filename));
AL_FUNC(int, _al_drive_exists, (int drive));
AL_FUNC(int, _al_getdrive, (void));
AL_FUNC(void, _al_getdcwd, (int drive, char *buf, int size));


/* packfile stuff */
AL_VAR(int, _packfile_filesize);
AL_VAR(int, _packfile_datasize);
AL_VAR(int, _packfile_type);
AL_FUNC(PACKFILE *, _pack_fdopen, (int fd, AL_CONST char *mode));


/* various bits of mouse stuff */
AL_FUNC(void, _handle_mouse_input, (void));

AL_VAR(int, _mouse_x);
AL_VAR(int, _mouse_y);
AL_VAR(int, _mouse_z);
AL_VAR(int, _mouse_b);
AL_VAR(int, _mouse_on);

AL_VAR(int, _mouse_installed);

AL_VAR(int, _mouse_type);
AL_VAR(BITMAP *, _mouse_screen);
AL_VAR(BITMAP *, _mouse_pointer);


/* various bits of timer stuff */
AL_FUNC(long, _handle_timer_tick, (int interval));

#define MAX_TIMERS      16

/* list of active timer handlers */
typedef struct TIMER_QUEUE
{
   AL_METHOD(void, proc, (void));      /* timer handler functions */
   AL_METHOD(void, param_proc, (void *param));
   void *param;                        /* param for param_proc if used */
   long speed;                         /* timer speed */
   long counter;                       /* counts down to zero=blastoff */
} TIMER_QUEUE;

AL_ARRAY(TIMER_QUEUE, _timer_queue);

AL_VAR(int, _timer_installed);

AL_VAR(int, _timer_use_retrace);
AL_VAR(volatile int, _retrace_hpp_value);


/* various bits of keyboard stuff */
AL_FUNC(void, _handle_key_press, (int keycode, int scancode));
AL_FUNC(void, _handle_key_release, (int scancode));

AL_VAR(int, _keyboard_installed);

AL_ARRAY(volatile char, _key);
AL_VAR(volatile int, _key_shifts);

AL_FUNC(void, _pckeys_init, (void));
AL_FUNC(void, _handle_pckey, (int code));
AL_FUNC(int,  _pckey_scancode_to_ascii, (int scancode));

AL_VAR(unsigned short *, _key_ascii_table);
AL_VAR(unsigned short *, _key_capslock_table);
AL_VAR(unsigned short *, _key_shift_table);
AL_VAR(unsigned short *, _key_control_table);
AL_VAR(unsigned short *, _key_altgr_lower_table);
AL_VAR(unsigned short *, _key_altgr_upper_table);
AL_VAR(unsigned short *, _key_accent1_lower_table);
AL_VAR(unsigned short *, _key_accent1_upper_table);
AL_VAR(unsigned short *, _key_accent2_lower_table);
AL_VAR(unsigned short *, _key_accent2_upper_table);
AL_VAR(unsigned short *, _key_accent3_lower_table);
AL_VAR(unsigned short *, _key_accent3_upper_table);
AL_VAR(unsigned short *, _key_accent4_lower_table);
AL_VAR(unsigned short *, _key_accent4_upper_table);

AL_VAR(int, _key_accent1);
AL_VAR(int, _key_accent2);
AL_VAR(int, _key_accent3);
AL_VAR(int, _key_accent4);
AL_VAR(int, _key_accent1_flag);
AL_VAR(int, _key_accent2_flag);
AL_VAR(int, _key_accent3_flag);
AL_VAR(int, _key_accent4_flag);

AL_VAR(int, _key_standard_kb);


/* various bits of joystick stuff */
AL_VAR(int, _joy_type);

AL_VAR(int, _joystick_installed);


/* some GUI innards that other people need to use */
AL_FUNC(int, _gui_shadow_box_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, _gui_ctext_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, _gui_button_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, _gui_edit_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, _gui_list_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, _gui_text_list_proc, (int msg, DIALOG *d, int c));

AL_FUNC(void, _handle_scrollable_scroll_click, (DIALOG *d, int listsize, int *offset, int height));
AL_FUNC(void, _handle_scrollable_scroll, (DIALOG *d, int listsize, int *index, int *offset));
AL_FUNC(void, _handle_listbox_click, (DIALOG *d));
AL_FUNC(void, _draw_scrollable_frame, (DIALOG *d, int listsize, int offset, int height, int fg_color, int bg));
AL_FUNC(void, _draw_listbox, (DIALOG *d));
AL_FUNC(void, _draw_textbox, (char *thetext, int *listsize, int draw, int offset, int wword, int tabsize, int x, int y, int w, int h, int disabled, int fore, int deselect, int disable));


/* text- and font-related stuff */
typedef struct FONT_VTABLE
{
   AL_METHOD(int, font_height, (AL_CONST FONT *f));
   AL_METHOD(int, char_length, (AL_CONST FONT *f, int ch));
   AL_METHOD(int, text_length, (AL_CONST FONT *f, AL_CONST char *text));
   AL_METHOD(int, render_char, (AL_CONST FONT *f, int ch, int fg, int bg, BITMAP *bmp, int x, int y));
   AL_METHOD(void, render, (AL_CONST FONT *f, AL_CONST char *text, int fg, int bg, BITMAP *bmp, int x, int y));
   AL_METHOD(void, destroy, (FONT *f));
} FONT_VTABLE;

AL_VAR(FONT, _default_font);
AL_VAR(FONT_VTABLE, _font_vtable_mono);
AL_VAR(FONT_VTABLE *, font_vtable_mono);
AL_VAR(FONT_VTABLE, _font_vtable_color);
AL_VAR(FONT_VTABLE *, font_vtable_color);

AL_FUNC(FONT_GLYPH *, _mono_find_glyph, (AL_CONST FONT *f, int ch));
AL_FUNC(BITMAP *, _color_find_glyph, (AL_CONST FONT *f, int ch));

typedef struct FONT_MONO_DATA 
{
   int begin, end;                  /* first char and one-past-the-end char */
   FONT_GLYPH **glyphs;             /* our glyphs */
   struct FONT_MONO_DATA *next;     /* linked list structure */
} FONT_MONO_DATA;

typedef struct FONT_COLOR_DATA
{
   int begin, end;                  /* first char and one-past-the-end char */
   BITMAP **bitmaps;                /* our glyphs */
   struct FONT_COLOR_DATA *next;    /* linked list structure */
} FONT_COLOR_DATA;


/* caches and tables for svga bank switching */
AL_VAR(int, _last_bank_1);
AL_VAR(int, _last_bank_2); 

AL_VAR(int *, _gfx_bank);

/* bank switching routines (these use a non-C calling convention on i386!) */
AL_FUNC(unsigned long, _stub_bank_switch, (BITMAP *bmp, int line));
AL_FUNC(void, _stub_unbank_switch, (BITMAP *bmp));
AL_FUNC(void, _stub_bank_switch_end, (void));

#ifdef GFX_MODEX

AL_FUNC(unsigned long, _x_bank_switch, (BITMAP *bmp, int line));
AL_FUNC(void, _x_unbank_switch, (BITMAP *bmp));
AL_FUNC(void, _x_bank_switch_end, (void));

#endif

#ifdef GFX_VBEAF

AL_FUNC(void, _accel_bank_stub, (void));
AL_FUNC(void, _accel_bank_stub_end, (void));
AL_FUNC(void, _accel_bank_switch, (void));
AL_FUNC(void, _accel_bank_switch_end, (void));

AL_VAR(void *, _accel_driver);

AL_VAR(int, _accel_active);

AL_VAR(void *, _accel_set_bank);
AL_VAR(void *, _accel_idle);

AL_FUNC(void, _fill_vbeaf_libc_exports, (void *ptr));
AL_FUNC(void, _fill_vbeaf_pmode_exports, (void *ptr));

#endif


/* stuff for setting up bitmaps */
AL_FUNC(BITMAP *, _make_bitmap, (int w, int h, unsigned long addr, GFX_DRIVER *driver, int color_depth, int bpl));
AL_FUNC(void, _sort_out_virtual_width, (int *width, GFX_DRIVER *driver));

AL_FUNC(GFX_VTABLE *, _get_vtable, (int color_depth));

AL_VAR(GFX_VTABLE, _screen_vtable);

AL_VAR(int, _gfx_mode_set_count);

AL_VAR(int, _refresh_rate_request);
AL_VAR(int, _current_refresh_rate);

AL_VAR(int, _sub_bitmap_id_count);

AL_VAR(int, _screen_split_position);

AL_VAR(int, _safe_gfx_mode_change);