lib/tty/key.h

   1 /** \file key.h
   2  *  \brief Header: keyboard support routines
   3  */
   4
   5 #ifndef MC__KEY_H
   6 #define MC__KEY_H
   7
   8 #include "lib/global.h"         /* <glib.h> */
   9 #include "tty.h"                /* KEY_F macro */
  10
  11 /*** typedefs(not structures) and defined constants **********************************************/
  12
  13 /* Possible return values from tty_get_event: */
  14 #define EV_MOUSE   -2
  15 #define EV_NONE    -1
  16
  17 /*
  18  * Internal representation of the key modifiers.  It is used in the
  19  * sequence tables and the keycodes in the mc sources.
  20  */
  21 #define KEY_M_SHIFT 0x1000
  22 #define KEY_M_ALT   0x2000
  23 #define KEY_M_CTRL  0x4000
  24 #define KEY_M_MASK  0x7000
  25
  26 #define XCTRL(x) (KEY_M_CTRL | ((x) & 0x1F))
  27 #define ALT(x) (KEY_M_ALT | (unsigned int)(x))
  28
  29 /* To define sequences and return codes */
  30 #define MCKEY_NOACTION  0
  31 #define MCKEY_ESCAPE    1
  32
  33 /* Return code for the mouse sequence */
  34 #define MCKEY_MOUSE     -2
  35
  36 /*** enums ***************************************************************************************/
  37
  38 /*** structures declarations (and typedefs of structures)*****************************************/
  39
  40 typedef struct
  41 {
  42     int code;
  43     const char *name;
  44     const char *longname;
  45     const char *shortcut;
  46 } key_code_name_t;
  47
  48 struct Gpm_Event;
  49
  50 /*** global variables defined in .c file *********************************************************/
  51
  52 extern const key_code_name_t key_name_conv_tab[];
  53
  54 extern int old_esc_mode_timeout;
  55
  56 extern int alternate_plus_minus;
  57 extern int double_click_speed;
  58 extern int old_esc_mode;
  59 extern int use_8th_bit_as_meta;
  60 extern int mou_auto_repeat;
  61
  62 /*** declarations of public functions ************************************************************/
  63
  64 gboolean define_sequence (int code, const char *seq, int action);
  65
  66 void init_key (void);
  67 void init_key_input_fd (void);
  68 void done_key (void);
  69
  70 long lookup_key (const char *name, char **label);
  71
  72 /* mouse support */
  73 int tty_get_event (struct Gpm_Event *event, gboolean redo_event, gboolean block);
  74 gboolean is_idle (void);
  75 int tty_getch (void);
  76
  77 /* While waiting for input, the program can select on more than one file */
  78 typedef int (*select_fn) (int fd, void *info);
  79
  80 /* Channel manipulation */
  81 void add_select_channel (int fd, select_fn callback, void *info);
  82 void delete_select_channel (int fd);
  83 void remove_select_channel (int fd);
  84
  85 /* Activate/deactivate the channel checking */
  86 void channels_up (void);
  87 void channels_down (void);
  88
  89 /* internally used in key.c, defined in keyxtra.c */
  90 void load_xtra_key_defines (void);
  91
  92 /* Learn a single key */
  93 char *learn_key (void);
  94
  95 /* Returns a key code (interpreted) */
  96 int get_key_code (int nodelay);
  97
  98 /* Set keypad mode (xterm and linux console only) */
  99 void numeric_keypad_mode (void);
 100 void application_keypad_mode (void);
 101
 102 /*** inline functions ****************************************************************************/
 103
 104 static inline gboolean
 105 is_abort_char (int c)
 106 {
 107     return ((c == ESC_CHAR) || (c == KEY_F (10)));
 108 }
 109
 110 #endif /* MC_KEY_H */