diff options
Diffstat (limited to 'util/render-label.c')
| -rw-r--r-- | util/render-label.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/util/render-label.c b/util/render-label.c new file mode 100644 index 0000000..91c080c --- /dev/null +++ b/util/render-label.c @@ -0,0 +1,215 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2010,2012,2013 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 <config.h> + +#include <grub/util/misc.h> +#include <grub/util/install.h> +#include <grub/i18n.h> +#include <grub/term.h> +#include <grub/font.h> +#include <grub/gfxmenu_view.h> +#include <grub/color.h> +#include <grub/emu/hostdisk.h> + +#define _GNU_SOURCE 1 + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> + +struct header +{ + grub_uint8_t magic; + grub_uint16_t width; + grub_uint16_t height; +} GRUB_PACKED; + +static struct grub_video_palette_data ieee1275_palette[256]; + +void +grub_util_render_label (const char *label_font, + const char *label_bgcolor, + const char *label_color, + const char *text, + const char *output) +{ + struct header head; + FILE *out; + int i, j, k, cptr = 0; + grub_font_t font; + char *fontfull; + const grub_uint8_t vals[] = { 0xff, 0xda, 0xb3, 0x87, 0x54, 0x00 }; + const grub_uint8_t vals2[] = { 0xf3, 0xe7, 0xcd, 0xc0, 0xa5, 0x96, + 0x77, 0x66, 0x3f, 0x27 }; + int width, height; + grub_uint8_t bg, fg; + struct grub_video_mode_info mode_info; + grub_err_t err; + grub_video_rgba_color_t fgcolor; + grub_video_rgba_color_t bgcolor; + + if (output) + out = grub_util_fopen (output, "wb"); + else + out = stdout; + if (!out) + { + grub_util_error (_("cannot open `%s': %s"), output ? : "stdout", + strerror (errno)); + } + + if (label_color) + { + err = grub_video_parse_color (label_color, &fgcolor); + if (err) + grub_util_error (_("invalid color specification `%s'"), label_color); + } + else + { + fgcolor.red = 0x00; + fgcolor.green = 0x00; + fgcolor.blue = 0x00; + fgcolor.alpha = 0xff; + } + + if (label_bgcolor) + { + err = grub_video_parse_color (label_bgcolor, &bgcolor); + if (err) + grub_util_error (_("invalid color specification `%s'"), label_bgcolor); + } + else + { + bgcolor.red = 0xff; + bgcolor.green = 0xff; + bgcolor.blue = 0xff; + bgcolor.alpha = 0xff; + } + + for (i = 0; i < 256; i++) + ieee1275_palette[i].a = 0xff; + + for (i = 0; i < 6; i++) + for (j = 0; j < 6; j++) + for (k = 0; k < 6; k++) + { + ieee1275_palette[cptr].r = vals[i]; + ieee1275_palette[cptr].g = vals[j]; + ieee1275_palette[cptr].b = vals[k]; + ieee1275_palette[cptr].a = 0xff; + cptr++; + } + cptr--; + for (i = 0; i < 10; i++) + { + ieee1275_palette[cptr].r = vals2[i]; + ieee1275_palette[cptr].g = 0; + ieee1275_palette[cptr].b = 0; + ieee1275_palette[cptr].a = 0xff; + cptr++; + } + for (i = 0; i < 10; i++) + { + ieee1275_palette[cptr].r = 0; + ieee1275_palette[cptr].g = vals2[i]; + ieee1275_palette[cptr].b = 0; + ieee1275_palette[cptr].a = 0xff; + cptr++; + } + for (i = 0; i < 10; i++) + { + ieee1275_palette[cptr].r = 0; + ieee1275_palette[cptr].g = 0; + ieee1275_palette[cptr].b = vals2[i]; + ieee1275_palette[cptr].a = 0xff; + cptr++; + } + for (i = 0; i < 10; i++) + { + ieee1275_palette[cptr].r = vals2[i]; + ieee1275_palette[cptr].g = vals2[i]; + ieee1275_palette[cptr].b = vals2[i]; + ieee1275_palette[cptr].a = 0xff; + cptr++; + } + ieee1275_palette[cptr].r = 0; + ieee1275_palette[cptr].g = 0; + ieee1275_palette[cptr].b = 0; + ieee1275_palette[cptr].a = 0xff; + + char * t; + t = grub_canonicalize_file_name (label_font); + if (!t) + { + grub_util_error (_("cannot open `%s': %s"), label_font, + strerror (errno)); + } + + fontfull = xasprintf ("(host)/%s", t); + free (t); + + grub_font_loader_init (); + font = grub_font_load (fontfull); + if (!font) + { + grub_util_error (_("cannot open `%s': %s"), label_font, + grub_errmsg); + } + + width = grub_font_get_string_width (font, text) + 10; + height = grub_font_get_height (font); + + mode_info.width = width; + mode_info.height = height; + mode_info.pitch = width; + + mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR; + mode_info.bpp = 8; + mode_info.bytes_per_pixel = 1; + mode_info.number_of_colors = 256; + + grub_video_capture_start (&mode_info, ieee1275_palette, + ARRAY_SIZE (ieee1275_palette)); + + fg = grub_video_map_rgb (fgcolor.red, + fgcolor.green, + fgcolor.blue); + bg = grub_video_map_rgb (bgcolor.red, + bgcolor.green, + bgcolor.blue); + + grub_memset (grub_video_capture_get_framebuffer (), bg, height * width); + grub_font_draw_string (text, font, fg, + 5, grub_font_get_ascent (font)); + + head.magic = 1; + head.width = grub_cpu_to_be16 (width); + head.height = grub_cpu_to_be16 (height); + fwrite (&head, 1, sizeof (head), out); + fwrite (grub_video_capture_get_framebuffer (), 1, width * height, out); + + grub_video_capture_end (); + if (out != stdout) + fclose (out); + + free (fontfull); +} |