/usr/include/allegro/gui.h is in liballegro4-dev 2:4.4.2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* /\ _ \ /\_ \ /\_ \
* \ \ \L\ \\//\ \ \//\ \ __ __ _ __ ___
* \ \ __ \ \ \ \ \ \ \ /'__`\ /'_ `\/\`'__\/ __`\
* \ \ \/\ \ \_\ \_ \_\ \_/\ __//\ \L\ \ \ \//\ \L\ \
* \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
* \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
* /\____/
* \_/__/
*
* GUI routines.
*
* By Shawn Hargreaves.
*
* See readme.txt for copyright information.
*/
#ifndef ALLEGRO_GUI_H
#define ALLEGRO_GUI_H
#include "base.h"
#ifdef __cplusplus
extern "C" {
#endif
struct BITMAP;
struct DIALOG;
typedef AL_METHOD(int, DIALOG_PROC, (int msg, struct DIALOG *d, int c));
typedef struct DIALOG
{
DIALOG_PROC proc;
int x, y, w, h; /* position and size of the object */
int fg, bg; /* foreground and background colors */
int key; /* keyboard shortcut (ASCII code) */
int flags; /* flags about the object state */
int d1, d2; /* any data the object might require */
void *dp, *dp2, *dp3; /* pointers to more object data */
} DIALOG;
/* a popup menu */
typedef struct MENU
{
char *text; /* menu item text */
AL_METHOD(int, proc, (void)); /* callback function */
struct MENU *child; /* to allow nested menus */
int flags; /* flags about the menu state */
void *dp; /* any data the menu might require */
} MENU;
/* stored information about the state of an active GUI dialog */
typedef struct DIALOG_PLAYER
{
int obj;
int res;
int mouse_obj;
int focus_obj;
int joy_on;
int click_wait;
int mouse_ox, mouse_oy;
int mouse_oz;
int mouse_b;
DIALOG *dialog;
} DIALOG_PLAYER;
/* stored information about the state of an active GUI menu */
typedef struct MENU_PLAYER
{
MENU *menu; /* the menu itself */
int bar; /* set if it is a top level menu bar */
int size; /* number of items in the menu */
int sel; /* selected item */
int x, y, w, h; /* screen position of the menu */
int (*proc)(void); /* callback function */
BITMAP *saved; /* saved what was underneath it */
int mouse_button_was_pressed; /* set if mouse button pressed on last iteration */
int back_from_child; /* set if a child was activated on last iteration */
int timestamp; /* timestamp for gui_timer events */
int mouse_sel; /* item the mouse is currently over */
int redraw; /* set if redrawing is required */
int auto_open; /* set if menu auto-opening is activated */
int ret; /* return value */
DIALOG *dialog; /* d_menu_proc() parent dialog (if any) */
struct MENU_PLAYER *parent; /* the parent menu, or NULL for root */
struct MENU_PLAYER *child; /* the child menu, or NULL for none */
} MENU_PLAYER;
/* bits for the flags field */
#define D_EXIT 1 /* object makes the dialog exit */
#define D_SELECTED 2 /* object is selected */
#define D_GOTFOCUS 4 /* object has the input focus */
#define D_GOTMOUSE 8 /* mouse is on top of object */
#define D_HIDDEN 16 /* object is not visible */
#define D_DISABLED 32 /* object is visible but inactive */
#define D_DIRTY 64 /* object needs to be redrawn */
#define D_INTERNAL 128 /* reserved for internal use */
#define D_USER 256 /* from here on is free for your own use */
/* return values for the dialog procedures */
#define D_O_K 0 /* normal exit status */
#define D_CLOSE 1 /* request to close the dialog */
#define D_REDRAW 2 /* request to redraw the dialog */
#define D_REDRAWME 4 /* request to redraw this object */
#define D_WANTFOCUS 8 /* this object wants the input focus */
#define D_USED_CHAR 16 /* object has used the keypress */
#define D_REDRAW_ALL 32 /* request to redraw all active dialogs */
#define D_DONTWANTMOUSE 64 /* this object does not want mouse focus */
/* messages for the dialog procedures */
#define MSG_START 1 /* start the dialog, initialise */
#define MSG_END 2 /* dialog is finished - cleanup */
#define MSG_DRAW 3 /* draw the object */
#define MSG_CLICK 4 /* mouse click on the object */
#define MSG_DCLICK 5 /* double click on the object */
#define MSG_KEY 6 /* keyboard shortcut */
#define MSG_CHAR 7 /* other keyboard input */
#define MSG_UCHAR 8 /* unicode keyboard input */
#define MSG_XCHAR 9 /* broadcast character to all objects */
#define MSG_WANTFOCUS 10 /* does object want the input focus? */
#define MSG_GOTFOCUS 11 /* got the input focus */
#define MSG_LOSTFOCUS 12 /* lost the input focus */
#define MSG_GOTMOUSE 13 /* mouse on top of object */
#define MSG_LOSTMOUSE 14 /* mouse moved away from object */
#define MSG_IDLE 15 /* update any background stuff */
#define MSG_RADIO 16 /* clear radio buttons */
#define MSG_WHEEL 17 /* mouse wheel moved */
#define MSG_LPRESS 18 /* mouse left button pressed */
#define MSG_LRELEASE 19 /* mouse left button released */
#define MSG_MPRESS 20 /* mouse middle button pressed */
#define MSG_MRELEASE 21 /* mouse middle button released */
#define MSG_RPRESS 22 /* mouse right button pressed */
#define MSG_RRELEASE 23 /* mouse right button released */
#define MSG_WANTMOUSE 24 /* does object want the mouse? */
#define MSG_USER 25 /* from here on are free... */
/* some dialog procedures */
AL_FUNC(int, d_yield_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_clear_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_box_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_shadow_box_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_bitmap_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_text_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_ctext_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_rtext_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_button_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_check_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_radio_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_icon_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_keyboard_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_edit_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_list_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_text_list_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_textbox_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_slider_proc, (int msg, DIALOG *d, int c));
AL_FUNC(int, d_menu_proc, (int msg, DIALOG *d, int c));
AL_VAR(DIALOG_PROC, gui_shadow_box_proc);
AL_VAR(DIALOG_PROC, gui_ctext_proc);
AL_VAR(DIALOG_PROC, gui_button_proc);
AL_VAR(DIALOG_PROC, gui_edit_proc);
AL_VAR(DIALOG_PROC, gui_list_proc);
AL_VAR(DIALOG_PROC, gui_text_list_proc);
AL_FUNCPTR(void, gui_menu_draw_menu, (int x, int y, int w, int h));
AL_FUNCPTR(void, gui_menu_draw_menu_item, (MENU *m, int x, int y, int w, int h, int bar, int sel));
AL_VAR(DIALOG *, active_dialog);
AL_VAR(MENU *, active_menu);
AL_VAR(int, gui_mouse_focus);
AL_VAR(int, gui_fg_color);
AL_VAR(int, gui_mg_color);
AL_VAR(int, gui_bg_color);
AL_VAR(int, gui_font_baseline);
AL_FUNCPTR(int, gui_mouse_x, (void));
AL_FUNCPTR(int, gui_mouse_y, (void));
AL_FUNCPTR(int, gui_mouse_z, (void));
AL_FUNCPTR(int, gui_mouse_b, (void));
AL_FUNC(void, gui_set_screen, (BITMAP *bmp));
AL_FUNC(BITMAP *, gui_get_screen, (void));
AL_FUNC(int, gui_textout_ex, (struct BITMAP *bmp, AL_CONST char *s, int x, int y, int color, int bg, int centre));
AL_FUNC(int, gui_strlen, (AL_CONST char *s));
AL_FUNC(void, position_dialog, (DIALOG *dialog, int x, int y));
AL_FUNC(void, centre_dialog, (DIALOG *dialog));
AL_FUNC(void, set_dialog_color, (DIALOG *dialog, int fg, int bg));
AL_FUNC(int, find_dialog_focus, (DIALOG *dialog));
AL_FUNC(int, offer_focus, (DIALOG *dialog, int obj, int *focus_obj, int force));
AL_FUNC(int, object_message, (DIALOG *dialog, int msg, int c));
AL_FUNC(int, dialog_message, (DIALOG *dialog, int msg, int c, int *obj));
AL_FUNC(int, broadcast_dialog_message, (int msg, int c));
AL_FUNC(int, do_dialog, (DIALOG *dialog, int focus_obj));
AL_FUNC(int, popup_dialog, (DIALOG *dialog, int focus_obj));
AL_FUNC(DIALOG_PLAYER *, init_dialog, (DIALOG *dialog, int focus_obj));
AL_FUNC(int, update_dialog, (DIALOG_PLAYER *player));
AL_FUNC(int, shutdown_dialog, (DIALOG_PLAYER *player));
AL_FUNC(int, do_menu, (MENU *menu, int x, int y));
AL_FUNC(MENU_PLAYER *, init_menu, (MENU *menu, int x, int y));
AL_FUNC(int, update_menu, (MENU_PLAYER *player));
AL_FUNC(int, shutdown_menu, (MENU_PLAYER *player));
AL_FUNC(int, alert, (AL_CONST char *s1, AL_CONST char *s2, AL_CONST char *s3, AL_CONST char *b1, AL_CONST char *b2, int c1, int c2));
AL_FUNC(int, alert3, (AL_CONST char *s1, AL_CONST char *s2, AL_CONST char *s3, AL_CONST char *b1, AL_CONST char *b2, AL_CONST char *b3, int c1, int c2, int c3));
AL_FUNC(int, file_select_ex, (AL_CONST char *message, char *path, AL_CONST char *ext, int size, int w, int h));
AL_FUNC(int, gfx_mode_select, (int *card, int *w, int *h));
AL_FUNC(int, gfx_mode_select_ex, (int *card, int *w, int *h, int *color_depth));
AL_FUNC(int, gfx_mode_select_filter, (int *card, int *w, int *h, int *color_depth, int (*filter)(int, int, int, int)));
#ifdef __cplusplus
}
#endif
#endif /* ifndef ALLEGRO_GUI_H */
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