arch/all-pc/boot/grub2-aros/util/render-label.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2010,2012,2013 Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <config.h>
  21
  22 #include <grub/util/misc.h>
  23 #include <grub/util/install.h>
  24 #include <grub/i18n.h>
  25 #include <grub/term.h>
  26 #include <grub/font.h>
  27 #include <grub/gfxmenu_view.h>
  28 #include <grub/color.h>
  29 #include <grub/emu/hostdisk.h>
  30
  31 #define _GNU_SOURCE     1
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <unistd.h>
  37 #include <errno.h>
  38
  39 struct header
  40 {
  41   grub_uint8_t magic;
  42   grub_uint16_t width;
  43   grub_uint16_t height;
  44 } GRUB_PACKED;
  45
  46 static struct grub_video_palette_data ieee1275_palette[256];
  47
  48 void
  49 grub_util_render_label (const char *label_font,
  50                         const char *label_bgcolor,
  51                         const char *label_color,
  52                         const char *text,
  53                         const char *output)
  54 {
  55   struct header head;
  56   FILE *out;
  57   int i, j, k, cptr = 0;
  58   grub_font_t font;
  59   char *fontfull;
  60   const grub_uint8_t vals[] = { 0xff, 0xda, 0xb3, 0x87, 0x54, 0x00 };
  61   const grub_uint8_t vals2[] = { 0xf3, 0xe7, 0xcd, 0xc0, 0xa5, 0x96,
  62                                  0x77, 0x66, 0x3f, 0x27 };
  63   int width, height;
  64   grub_uint8_t bg, fg;
  65   struct grub_video_mode_info mode_info;
  66   grub_err_t err;
  67   grub_video_rgba_color_t fgcolor;
  68   grub_video_rgba_color_t bgcolor;
  69
  70   if (output)
  71     out = grub_util_fopen (output, "wb");
  72   else
  73     out = stdout;
  74   if (!out)
  75     {
  76       grub_util_error (_("cannot open `%s': %s"), output ? : "stdout",
  77                        strerror (errno));
  78     }
  79
  80   if (label_color)
  81     {
  82       err = grub_video_parse_color (label_color, &fgcolor);
  83       if (err)
  84         grub_util_error (_("invalid color specification `%s'"), label_color);
  85     }
  86   else
  87     {
  88       fgcolor.red = 0x00;
  89       fgcolor.green = 0x00;
  90       fgcolor.blue = 0x00;
  91       fgcolor.alpha = 0xff;
  92     }
  93
  94   if (label_bgcolor)
  95     {
  96       err = grub_video_parse_color (label_bgcolor, &bgcolor);
  97       if (err)
  98         grub_util_error (_("invalid color specification `%s'"), label_bgcolor);
  99     }
 100   else
 101     {
 102       bgcolor.red = 0xff;
 103       bgcolor.green = 0xff;
 104       bgcolor.blue = 0xff;
 105       bgcolor.alpha = 0xff;
 106     }
 107
 108   for (i = 0; i < 256; i++)
 109     ieee1275_palette[i].a = 0xff;
 110
 111   for (i = 0; i < 6; i++)
 112     for (j = 0; j < 6; j++)
 113       for (k = 0; k < 6; k++)
 114         {
 115           ieee1275_palette[cptr].r = vals[i];
 116           ieee1275_palette[cptr].g = vals[j];
 117           ieee1275_palette[cptr].b = vals[k];
 118           ieee1275_palette[cptr].a = 0xff;
 119           cptr++;
 120         }
 121   cptr--;
 122   for (i = 0; i < 10; i++)
 123     {
 124       ieee1275_palette[cptr].r = vals2[i];
 125       ieee1275_palette[cptr].g = 0;
 126       ieee1275_palette[cptr].b = 0;
 127       ieee1275_palette[cptr].a = 0xff;
 128       cptr++;
 129     }
 130   for (i = 0; i < 10; i++)
 131     {
 132       ieee1275_palette[cptr].r = 0;
 133       ieee1275_palette[cptr].g = vals2[i];
 134       ieee1275_palette[cptr].b = 0;
 135       ieee1275_palette[cptr].a = 0xff;
 136       cptr++;
 137     }
 138   for (i = 0; i < 10; i++)
 139     {
 140       ieee1275_palette[cptr].r = 0;
 141       ieee1275_palette[cptr].g = 0;
 142       ieee1275_palette[cptr].b = vals2[i];
 143       ieee1275_palette[cptr].a = 0xff;
 144       cptr++;
 145     }
 146   for (i = 0; i < 10; i++)
 147     {
 148       ieee1275_palette[cptr].r = vals2[i];
 149       ieee1275_palette[cptr].g = vals2[i];
 150       ieee1275_palette[cptr].b = vals2[i];
 151       ieee1275_palette[cptr].a = 0xff;
 152       cptr++;
 153     }
 154   ieee1275_palette[cptr].r = 0;
 155   ieee1275_palette[cptr].g = 0;
 156   ieee1275_palette[cptr].b = 0;
 157   ieee1275_palette[cptr].a = 0xff;
 158
 159   char * t;
 160   t = canonicalize_file_name (label_font);
 161   if (!t)
 162     {
 163       grub_util_error (_("cannot open `%s': %s"), label_font,
 164                        strerror (errno));
 165     }
 166
 167   fontfull = xasprintf ("(host)/%s", t);
 168   free (t);
 169
 170   grub_font_loader_init ();
 171   font = grub_font_load (fontfull);
 172   if (!font)
 173     {
 174       grub_util_error (_("cannot open `%s': %s"), label_font,
 175                        grub_errmsg);
 176     }
 177
 178   width = grub_font_get_string_width (font, text) + 10;
 179   height = grub_font_get_height (font);
 180
 181   mode_info.width = width;
 182   mode_info.height = height;
 183   mode_info.pitch = width;
 184
 185   mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
 186   mode_info.bpp = 8;
 187   mode_info.bytes_per_pixel = 1;
 188   mode_info.number_of_colors = 256;
 189
 190   grub_video_capture_start (&mode_info, ieee1275_palette,
 191                             ARRAY_SIZE (ieee1275_palette));
 192
 193   fg = grub_video_map_rgb (fgcolor.red,
 194                            fgcolor.green,
 195                            fgcolor.blue);
 196   bg = grub_video_map_rgb (bgcolor.red,
 197                            bgcolor.green,
 198                            bgcolor.blue);
 199
 200   grub_memset (grub_video_capture_get_framebuffer (), bg, height * width);
 201   grub_font_draw_string (text, font, fg,
 202                          5, grub_font_get_ascent (font));
 203
 204   head.magic = 1;
 205   head.width = grub_cpu_to_be16 (width);
 206   head.height = grub_cpu_to_be16 (height);
 207   fwrite (&head, 1, sizeof (head), out);
 208   fwrite (grub_video_capture_get_framebuffer (), 1, width * height, out);
 209
 210   grub_video_capture_end ();
 211   if (out != stdout)
 212     fclose (out);
 213
 214   free (fontfull);
 215 }