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Key definitions

This commit is contained in:
Michael Brown 2006-12-20 21:53:07 +00:00
parent b9f8599537
commit 96a1a2c6f0

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src/include/gpxe/keys.h Normal file
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#ifndef _GPXE_KEYS_H
#define _GPXE_KEYS_H
/** @file
*
* Key definitions
*
*/
/*
* Symbolic names for some standard ASCII characters
*
*/
#define NUL 0x00
#define CTRL_A 0x01
#define CTRL_B 0x02
#define CTRL_C 0x03
#define CTRL_D 0x04
#define CTRL_E 0x05
#define CTRL_F 0x06
#define CTRL_G 0x07
#define CTRL_H 0x08
#define CTRL_I 0x09
#define CTRL_J 0x0a
#define CTRL_K 0x0b
#define CTRL_L 0x0c
#define CTRL_M 0x0d
#define CTRL_N 0x0e
#define CTRL_O 0x0f
#define CTRL_P 0x10
#define CTRL_Q 0x11
#define CTRL_R 0x12
#define CTRL_S 0x13
#define CTRL_T 0x14
#define CTRL_U 0x15
#define CTRL_V 0x16
#define CTRL_W 0x17
#define CTRL_X 0x18
#define CTRL_Y 0x19
#define CTRL_Z 0x1a
#define BACKSPACE CTRL_H
#define TAB CTRL_I
#define ENTER CTRL_M
#define ESC 0x1b
/*
* Special keys outside the normal ASCII range
*
*
* These values are chosen to facilitate easy conversion from a
* received ANSI escape sequence to a KEY_XXX constant. The KEY_XXX
* constant is simply 0x100 plus the first byte following CSI in the
* ANSI escape sequence. For example, KEY_LEFT is 0x144, since a left
* cursor key is transmitted as the ANSI sequence "^[[D".
*/
#define KEY_ANSI( character ) ( 0x100 + (character) )
#define KEY_MIN 0x101
#define KEY_UP KEY_ANSI ( 'A' )
#define KEY_DOWN KEY_ANSI ( 'B' )
#define KEY_RIGHT KEY_ANSI ( 'C' )
#define KEY_LEFT KEY_ANSI ( 'D' )
#define KEY_END KEY_ANSI ( 'E' )
#define KEY_HOME KEY_ANSI ( 'H' )
#define KEY_PPAGE KEY_ANSI ( '5' )
#define KEY_NPAGE KEY_ANSI ( '6' )
#define KEY_MAX 0x1ff
/* Not in the [KEY_MIN,KEY_MAX] range; terminals seem to send these as
* normal ASCII values.
*/
#define KEY_BACKSPACE BACKSPACE
#define KEY_ENTER ENTER
#endif /* _GPXE_KEYS_H */