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/*
* Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program 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 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdio.h>
#include <errno.h>
#include <ipxe/ansiesc.h>
#include <ipxe/ansicol.h>
#include <config/colour.h>
/** @file
*
* ANSI colour definitions
*
*/
/**
* Construct ANSI colour definition
*
* @v basic Basic colour
* @v rgb 24-bit RGB value (or ANSICOL_NO_RGB)
* @ret ansicol ANSI colour definition
*/
#define ANSICOL_DEFINE( basic, rgb ) ( ( (basic) << 28 ) | (rgb) )
/**
* Extract basic colour from ANSI colour definition
*
* @v ansicol ANSI colour definition
* @ret basic Basic colour
*/
#define ANSICOL_BASIC( ansicol ) ( (ansicol) >> 28 )
/**
* Extract 24-bit RGB value from ANSI colour definition
*
* @v ansicol ANSI colour definition
* @ret rgb 24-bit RGB value
*/
#define ANSICOL_RGB( ansicol ) ( ( (ansicol) >> 0 ) & 0xffffffUL )
/**
* Extract 24-bit RGB value red component from ANSI colour definition
*
* @v ansicol ANSI colour definition
* @ret red Red component
*/
#define ANSICOL_RED( ansicol ) ( ( (ansicol) >> 16 ) & 0xff )
/**
* Extract 24-bit RGB value green component from ANSI colour definition
*
* @v ansicol ANSI colour definition
* @ret green Green component
*/
#define ANSICOL_GREEN( ansicol ) ( ( (ansicol) >> 8 ) & 0xff )
/**
* Extract 24-bit RGB value blue component from ANSI colour definition
*
* @v ansicol ANSI colour definition
* @ret blue Blue component
*/
#define ANSICOL_BLUE( ansicol ) ( ( (ansicol) >> 0 ) & 0xff )
/**
* Construct default ANSI colour definition
*
* @v basic Basic colour
* @ret ansicol ANSI colour definition
*
* Colours default to being just a basic colour. If the colour
* matches the normal UI text background colour, then its basic colour
* value is set to @c ANSICOL_MAGIC.
*/
#define ANSICOL_DEFAULT( basic ) \
ANSICOL_DEFINE ( ( ( (basic) == COLOR_NORMAL_BG ) ? \
ANSICOL_MAGIC : (basic) ), \
ANSICOL_NO_RGB )
/** ANSI colour definitions */
static uint32_t ansicols[] = {
[COLOR_BLACK] = ANSICOL_DEFAULT ( COLOR_BLACK ),
[COLOR_RED] = ANSICOL_DEFAULT ( COLOR_RED ),
[COLOR_GREEN] = ANSICOL_DEFAULT ( COLOR_GREEN ),
[COLOR_YELLOW] = ANSICOL_DEFAULT ( COLOR_YELLOW ),
[COLOR_BLUE] = ANSICOL_DEFAULT ( COLOR_BLUE ),
[COLOR_MAGENTA] = ANSICOL_DEFAULT ( COLOR_MAGENTA ),
[COLOR_CYAN] = ANSICOL_DEFAULT ( COLOR_CYAN ),
[COLOR_WHITE] = ANSICOL_DEFAULT ( COLOR_WHITE ),
};
/** Magic basic colour */
static uint8_t ansicol_magic = COLOR_NORMAL_BG;
/**
* Define ANSI colour
*
* @v colour Colour index
* @v basic Basic colour
* @v rgb 24-bit RGB value (or ANSICOL_NO_RGB)
* @ret rc Return status code
*/
int ansicol_define ( unsigned int colour, unsigned int basic, uint32_t rgb ) {
uint32_t ansicol;
/* Fail if colour index is out of range */
if ( colour >= ( sizeof ( ansicols ) / sizeof ( ansicols[0] ) ) )
return -EINVAL;
/* Update colour definition */
ansicol = ANSICOL_DEFINE ( basic, rgb );
ansicols[colour] = ansicol;
DBGC ( &ansicols[0], "ANSICOL redefined colour %d as basic %d RGB "
"%#06lx%s\n", colour, ANSICOL_BASIC ( ansicol ),
ANSICOL_RGB ( ansicol ),
( ( ansicol & ANSICOL_NO_RGB ) ? " [norgb]" : "" ) );
return 0;
}
/**
* Set ANSI colour (using colour definitions)
*
* @v colour Colour index
* @v which Foreground/background selector
*/
void ansicol_set ( unsigned int colour, unsigned int which ) {
uint32_t ansicol;
unsigned int basic;
/* Use default colour if colour index is out of range */
if ( colour < ( sizeof ( ansicols ) / sizeof ( ansicols[0] ) ) ) {
ansicol = ansicols[colour];
} else {
ansicol = ANSICOL_DEFINE ( COLOUR_DEFAULT, ANSICOL_NO_RGB );
}
/* If basic colour is out of range, use the magic colour */
basic = ANSICOL_BASIC ( ansicol );
if ( basic >= 10 )
basic = ansicol_magic;
/* Set basic colour first */
printf ( CSI "%c%dm", which, basic );
/* Set 24-bit RGB colour, if applicable */
if ( ! ( ansicol & ANSICOL_NO_RGB ) ) {
printf ( CSI "%c8;2;%d;%d;%dm", which, ANSICOL_RED ( ansicol ),
ANSICOL_GREEN ( ansicol ), ANSICOL_BLUE ( ansicol ) );
}
}
/**
* Reset magic colour
*
*/
void ansicol_reset_magic ( void ) {
/* Set to the compile-time default background colour */
ansicol_magic = COLOR_NORMAL_BG;
}
/**
* Set magic colour to transparent
*
*/
void ansicol_set_magic_transparent ( void ) {
/* Set to the console default colour (which will give a
* transparent background on the framebuffer console).
*/
ansicol_magic = COLOR_DEFAULT;
}
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