/* Keyboard interface for svgalib. */
/* Can be used independently. */

#ifndef VGAKEYBOARD_H
#define VGAKEYBOARD_H

#ifdef __cplusplus
extern "C" {
#endif

#define SCANCODE_CURSORUP	72	/* Principal cursor keys. */
#define SCANCODE_CURSORLEFT	75	/* (On numeric keypad.) */
#define SCANCODE_CURSORRIGHT	77
#define SCANCODE_CURSORDOWN	80

#define SCANCODE_CURSORUPLEFT	71	/* Diagonal keypad keys. */
#define SCANCODE_CURSORUPRIGHT	73
#define SCANCODE_CURSORDOWNLEFT	79
#define SCANCODE_CURSORDOWNRIGHT 81

#define SCANCODE_CURSORBLOCKUP	103	/* Cursor key block. */
#define SCANCODE_CURSORBLOCKLEFT 105
#define SCANCODE_CURSORBLOCKRIGHT 106
#define SCANCODE_CURSORBLOCKDOWN 108

#define SCANCODE_KEYPAD0	82
#define SCANCODE_KEYPAD1	79
#define SCANCODE_KEYPAD2	80
#define SCANCODE_KEYPAD3	81
#define SCANCODE_KEYPAD4	75
#define SCANCODE_KEYPAD5	76
#define SCANCODE_KEYPAD6	77
#define SCANCODE_KEYPAD7	71
#define SCANCODE_KEYPAD8	72
#define SCANCODE_KEYPAD9	73
#define SCANCODE_KEYPADENTER	96
#define SCANCODE_KEYPADPLUS	78
#define SCANCODE_KEYPADMINUS	74

#define SCANCODE_A		30
#define SCANCODE_S		31
#define SCANCODE_Q		16

#define SCANCODE_ESCAPE		1
#define SCANCODE_ENTER		28
#define SCANCODE_CONTROL	97

#define KEY_EVENTRELEASE 0
#define KEY_EVENTPRESS 1

/* Initialize keyboard handler (brings keyboard into RAW mode). Returns 0 */
/* if succesful. */
int keyboard_init();
/* Set event handler invoked by keyboard_update(). */
void keyboard_seteventhandler( void (*handler)( int scancode, int press ) );
/* Return keyboard to normal state. */
void keyboard_close();
/* Read raw keyboard device and handle events. Returns 0 if no event. */
int keyboard_update();
/* Similar to keyboard_update, but wait for an event to happen. */
/* [This doesn't seem to work very well] */
void keyboard_waitforupdate();

/* keyboard_init sets default event handler that keeps track of complete */
/* keyboard state: */

/* Result of keypressed. */
#define KEY_NOTPRESSED 0
#define KEY_PRESSED 1

/* Modes for translatekeys. */
#define TRANSLATE_CURSORKEYS 1	/* Map cursor block to keypad cursor. */
#define TRANSLATE_DIAGONAL 2	/* Map keypad diagonal to keypad cursor. */
#define TRANSLATE_KEYPADENTER 4 /* Map keypad enter to main enter key. */

void keyboard_setdefaulteventhandler();
/* Return pointer to buffer holding state of each key (scancode). */
/* Value 1 corresponds to key that is pressed, 0 means not pressed. */
char *keyboard_getstate();
/* Force keyboard state to nothing pressed (all zeroes). */
void keyboard_clearstate();
/* Let default handler translate cursor key block events to numeric keypad */
/* cursor key events. */
void keyboard_translatekeys( int mask );

/* Return nonzero if key is depressed. */
int keyboard_keypressed( int scancode );

#ifdef __cplusplus
}
#endif

#endif
