ansi_screen.c File Reference

#include <stdio.h>
#include <curses.h>
#include <console.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static void	ansiscr_reset (struct _curses_screen *scr) __nonnull
static void	ansiscr_movetoyx (struct _curses_screen *scr, unsigned int y, unsigned int x) __nonnull
static void	ansiscr_putc (struct _curses_screen *scr, chtype c) __nonnull
static int	ansiscr_getc (struct _curses_screen *scr __unused)
static bool	ansiscr_peek (struct _curses_screen *scr __unused)
Variables
unsigned short	_COLS = 80
unsigned short	_LINES = 24
SCREEN	_ansi_screen

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static void ansiscr_reset

(

struct _curses_screen *

scr

)

[static]

Definition at line 15 of file ansi_screen.c.

References _curses_screen::attrs, _curses_screen::curs_x, _curses_screen::curs_y, and printf().

                                                         {
        /* Reset terminal attributes and clear screen */
        scr->attrs = 0;
        scr->curs_x = 0;
        scr->curs_y = 0;
        printf ( "\033[0m" );
}

static void ansiscr_movetoyx	(	struct _curses_screen *	scr,
		unsigned int	y,
		unsigned int	x
	)			[static]

Definition at line 23 of file ansi_screen.c.

References _curses_screen::curs_x, _curses_screen::curs_y, and printf().

                                                                {
        if ( ( x != scr->curs_x ) || ( y != scr->curs_y ) ) {
                /* ANSI escape sequence to update cursor position */
                printf ( "\033[%d;%dH", ( y + 1 ), ( x + 1 ) );
                scr->curs_x = x;
                scr->curs_y = y;
        }
}

static void ansiscr_putc	(	struct _curses_screen *	scr,
		chtype	c
	)			[static]

Definition at line 33 of file ansi_screen.c.

References _COLS, A_ATTRIBUTES, A_BOLD, A_CHARTEXT, A_COLOR, _curses_screen::attrs, _curses_screen::curs_x, _curses_screen::curs_y, pair_content(), PAIR_NUMBER, printf(), and putchar().

                                                                  {
        unsigned int character = ( c & A_CHARTEXT );
        attr_t attrs = ( c & ( A_ATTRIBUTES | A_COLOR ) );
        int bold = ( attrs & A_BOLD );
        attr_t cpair = PAIR_NUMBER ( attrs );
        short fcol;
        short bcol;

        /* Update attributes if changed */
        if ( attrs != scr->attrs ) {
                scr->attrs = attrs;
                pair_content ( cpair, &fcol, &bcol );
                /* ANSI escape sequence to update character attributes */
                printf ( "\033[0;%d;3%d;4%dm", ( bold ? 1 : 22 ), fcol, bcol );
        }

        /* Print the actual character */
        putchar ( character );

        /* Update expected cursor position */
        if ( ++(scr->curs_x) == _COLS ) {
                scr->curs_x = 0;
                ++scr->curs_y;
        }
}

static int ansiscr_getc

(

struct _curses_screen *scr

__unused

)

[static]

Definition at line 59 of file ansi_screen.c.

References getchar().

                                                                {
        return getchar();
}

static bool ansiscr_peek

(

struct _curses_screen *scr

__unused

)

[static]

Definition at line 63 of file ansi_screen.c.

References iskey().

                                                                 {
        return iskey();
}

---

Variable Documentation

unsigned short _COLS = 80

Definition at line 12 of file ansi_screen.c.

Referenced by ansiscr_putc().

unsigned short _LINES = 24

Definition at line 13 of file ansi_screen.c.

SCREEN _ansi_screen

Initial value:

 {
        .init           = ansiscr_reset,
        .exit           = ansiscr_reset,
        .movetoyx       = ansiscr_movetoyx,
        .putc           = ansiscr_putc,
        .getc           = ansiscr_getc,
        .peek           = ansiscr_peek,
}

Definition at line 67 of file ansi_screen.c.