--- /dev/null
+/*
+ * 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;
+}
Code Review / kvmfornfv.git / blobdiff