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grub/include/grub/term.h
okuji 688e5699e6 2005-10-15 Yoshinori K. Okuji <okuji@enbug.org> 
* fs/xfs.c (grub_xfs_iterate_dir): Change the type of BLK to
        grub_uint64_t.
        Call the hook with a NUL-terminated filename.
        (grub_xfs_mount): Use grub_be_to_cpu32 instead of
        grub_cpu_to_be32.

        * kern/term.c (cursor_state): New variable.
        (grub_term_set_current): Reset the cursor state on a new
        terminal.
        (grub_setcursor): Rewritten to use CURSOR_STATE.
        (grub_getcursor): New function.

        * include/grub/term.h (grub_getcursor): New prototype.

        * io/gzio.c (test_header): Align BUF for accessing it as 32-bit
        integers on ARM. Reported by Timothy Baldwin
        <T.E.Baldwin99@members.leeds.ac.uk>.
2005-10-15 09:22:32 +00:00

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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef GRUB_TERM_HEADER
#define GRUB_TERM_HEADER 1
#include <grub/err.h>
#include <grub/symbol.h>
#include <grub/types.h>
/* These are used to represent the various color states we use. */
typedef enum
{
/* The color used to display all text that does not use the
user defined colors below. */
GRUB_TERM_COLOR_STANDARD,
/* The user defined colors for normal text. */
GRUB_TERM_COLOR_NORMAL,
/* The user defined colors for highlighted text. */
GRUB_TERM_COLOR_HIGHLIGHT
}
grub_term_color_state;
/* Flags for representing the capabilities of a terminal. */
/* Some notes about the flags:
- These flags are used by higher-level functions but not terminals
themselves.
- If a terminal is dumb, you may assume that only putchar, getkey and
checkkey are called.
- Some fancy features (setcolorstate, setcolor and setcursor) can be set
to NULL. */
/* Set when input characters shouldn't be echoed back. */
#define GRUB_TERM_NO_ECHO (1 << 0)
/* Set when the editing feature should be disabled. */
#define GRUB_TERM_NO_EDIT (1 << 1)
/* Set when the terminal cannot do fancy things. */
#define GRUB_TERM_DUMB (1 << 2)
/* Set when the terminal needs to be initialized. */
#define GRUB_TERM_NEED_INIT (1 << 16)
/* Unicode characters for fancy graphics. */
#define GRUB_TERM_DISP_LEFT 0x2190
#define GRUB_TERM_DISP_UP 0x2191
#define GRUB_TERM_DISP_RIGHT 0x2192
#define GRUB_TERM_DISP_DOWN 0x2193
#define GRUB_TERM_DISP_HLINE 0x2501
#define GRUB_TERM_DISP_VLINE 0x2503
#define GRUB_TERM_DISP_UL 0x250F
#define GRUB_TERM_DISP_UR 0x2513
#define GRUB_TERM_DISP_LL 0x2517
#define GRUB_TERM_DISP_LR 0x251B
/* Menu-related geometrical constants. */
/* FIXME: Ugly way to get them form terminal. */
#define GRUB_TERM_WIDTH ((grub_getwh()&0xFF00)>>8)
#define GRUB_TERM_HEIGHT (grub_getwh()&0xFF)
/* The number of lines of "GRUB version..." at the top. */
#define GRUB_TERM_INFO_HEIGHT 1
/* The number of columns/lines between messages/borders/etc. */
#define GRUB_TERM_MARGIN 1
/* The number of columns of scroll information. */
#define GRUB_TERM_SCROLL_WIDTH 1
/* The Y position of the top border. */
#define GRUB_TERM_TOP_BORDER_Y (GRUB_TERM_MARGIN + GRUB_TERM_INFO_HEIGHT \
+ GRUB_TERM_MARGIN)
/* The X position of the left border. */
#define GRUB_TERM_LEFT_BORDER_X GRUB_TERM_MARGIN
/* The width of the border. */
#define GRUB_TERM_BORDER_WIDTH (GRUB_TERM_WIDTH \
- GRUB_TERM_MARGIN * 3 \
- GRUB_TERM_SCROLL_WIDTH)
/* The number of lines of messages at the bottom. */
#define GRUB_TERM_MESSAGE_HEIGHT 8
/* The height of the border. */
#define GRUB_TERM_BORDER_HEIGHT (GRUB_TERM_HEIGHT \
- GRUB_TERM_TOP_BORDER_Y \
- GRUB_TERM_MESSAGE_HEIGHT)
/* The number of entries shown at a time. */
#define GRUB_TERM_NUM_ENTRIES (GRUB_TERM_BORDER_HEIGHT - 2)
/* The Y position of the first entry. */
#define GRUB_TERM_FIRST_ENTRY_Y (GRUB_TERM_TOP_BORDER_Y + 1)
/* The max column number of an entry. The last "-1" is for a
continuation marker. */
#define GRUB_TERM_ENTRY_WIDTH (GRUB_TERM_BORDER_WIDTH - 2 \
- GRUB_TERM_MARGIN * 2 - 1)
/* The standard X position of the cursor. */
#define GRUB_TERM_CURSOR_X (GRUB_TERM_LEFT_BORDER_X \
+ GRUB_TERM_BORDER_WIDTH \
- GRUB_TERM_MARGIN \
- 1)
struct grub_term
{
/* The terminal name. */
const char *name;
/* Initialize the terminal. */
grub_err_t (*init) (void);
/* Clean up the terminal. */
grub_err_t (*fini) (void);
/* Put a character. C is encoded in Unicode. */
void (*putchar) (grub_uint32_t c);
/* Get the number of columns occupied by a given character C. C is
encoded in Unicode. */
grub_ssize_t (*getcharwidth) (grub_uint32_t c);
/* Check if any input character is available. */
int (*checkkey) (void);
/* Get a character. */
int (*getkey) (void);
/* Get the screen size. The return value is ((Width << 8) | Height). */
grub_uint16_t (*getwh) (void);
/* Get the cursor position. The return value is ((X << 8) | Y). */
grub_uint16_t (*getxy) (void);
/* Go to the position (X, Y). */
void (*gotoxy) (grub_uint8_t x, grub_uint8_t y);
/* Clear the screen. */
void (*cls) (void);
/* Set the current color to be used */
void (*setcolorstate) (grub_term_color_state state);
/* Set the normal color and the highlight color. The format of each
color is VGA's. */
void (*setcolor) (grub_uint8_t normal_color, grub_uint8_t highlight_color);
/* Turn on/off the cursor. */
void (*setcursor) (int on);
/* Update the screen. */
void (*refresh) (void);
/* The feature flags defined above. */
grub_uint32_t flags;
/* The next terminal. */
struct grub_term *next;
};
typedef struct grub_term *grub_term_t;
void EXPORT_FUNC(grub_term_register) (grub_term_t term);
void EXPORT_FUNC(grub_term_unregister) (grub_term_t term);
void EXPORT_FUNC(grub_term_iterate) (int (*hook) (grub_term_t term));
grub_err_t EXPORT_FUNC(grub_term_set_current) (grub_term_t term);
grub_term_t EXPORT_FUNC(grub_term_get_current) (void);
void EXPORT_FUNC(grub_putchar) (int c);
void EXPORT_FUNC(grub_putcode) (grub_uint32_t code);
grub_ssize_t EXPORT_FUNC(grub_getcharwidth) (grub_uint32_t code);
int EXPORT_FUNC(grub_getkey) (void);
int EXPORT_FUNC(grub_checkkey) (void);
grub_uint16_t EXPORT_FUNC(grub_getwh) (void);
grub_uint16_t EXPORT_FUNC(grub_getxy) (void);
void EXPORT_FUNC(grub_gotoxy) (grub_uint8_t x, grub_uint8_t y);
void EXPORT_FUNC(grub_cls) (void);
void EXPORT_FUNC(grub_setcolorstate) (grub_term_color_state state);
void EXPORT_FUNC(grub_setcolor) (grub_uint8_t normal_color,
grub_uint8_t highlight_color);
int EXPORT_FUNC(grub_setcursor) (int on);
int EXPORT_FUNC(grub_getcursor) (void);
void EXPORT_FUNC(grub_refresh) (void);
void EXPORT_FUNC(grub_set_more) (int onoff);
/* For convenience. */
#define GRUB_TERM_ASCII_CHAR(c) ((c) & 0xff)
#endif /* ! GRUB_TERM_HEADER */
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