grub/kern/term.c
Vladimir 'phcoder' Serbinenko 7f1f423cda merge multiterm gfxmenu+multiterm
2009-12-27 22:38:22 +01:00

160 lines
3.1 KiB
C

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005,2007,2008,2009 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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, see <http://www.gnu.org/licenses/>.
*/
#include <grub/term.h>
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/time.h>
struct grub_term_output *grub_term_outputs_disabled;
struct grub_term_input *grub_term_inputs_disabled;
struct grub_term_output *grub_term_outputs;
struct grub_term_input *grub_term_inputs;
void (*grub_newline_hook) (void) = NULL;
/* Put a Unicode character. */
void
grub_putcode (grub_uint32_t code, struct grub_term_output *term)
{
if (code == '\t' && term->getxy)
{
int n;
n = 8 - ((term->getxy () >> 8) & 7);
while (n--)
grub_putcode (' ', term);
return;
}
(term->putchar) (code);
if (code == '\n')
(term->putchar) ('\r');
}
/* Put a character. C is one byte of a UTF-8 stream.
This function gathers bytes until a valid Unicode character is found. */
void
grub_putchar (int c)
{
static grub_size_t size = 0;
static grub_uint8_t buf[6];
grub_uint32_t code;
grub_size_t ret;
buf[size++] = c;
ret = grub_utf8_to_ucs4 (&code, 1, buf, size, 0);
if (ret != 0)
{
struct grub_term_output *term;
size = 0;
FOR_ACTIVE_TERM_OUTPUTS(term)
grub_putcode (code, term);
if (code == '\n' && grub_newline_hook)
grub_newline_hook ();
}
}
int
grub_getkey (void)
{
grub_term_input_t term;
grub_refresh ();
while (1)
{
FOR_ACTIVE_TERM_INPUTS(term)
{
int key = term->checkkey ();
if (key != -1)
return term->getkey ();
}
grub_cpu_idle ();
}
}
int
grub_checkkey (void)
{
grub_term_input_t term;
FOR_ACTIVE_TERM_INPUTS(term)
{
int key = term->checkkey ();
if (key != -1)
return key;
}
return -1;
}
int
grub_getkeystatus (void)
{
int status = 0;
grub_term_input_t term;
FOR_ACTIVE_TERM_INPUTS(term)
{
if (term->getkeystatus)
status |= term->getkeystatus ();
}
return status;
}
void
grub_cls (void)
{
struct grub_term_output *term;
FOR_ACTIVE_TERM_OUTPUTS(term)
{
if ((term->flags & GRUB_TERM_DUMB) || (grub_env_get ("debug")))
{
grub_putcode ('\n', term);
grub_term_refresh (term);
}
else
(term->cls) ();
}
}
void
grub_setcolorstate (grub_term_color_state state)
{
struct grub_term_output *term;
FOR_ACTIVE_TERM_OUTPUTS(term)
grub_term_setcolorstate (term, state);
}
void
grub_refresh (void)
{
struct grub_term_output *term;
FOR_ACTIVE_TERM_OUTPUTS(term)
grub_term_refresh (term);
}