commands/videotest.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2006,2007,2009  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 #include <grub/video.h>
  20 #include <grub/types.h>
  21 #include <grub/dl.h>
  22 #include <grub/misc.h>
  23 #include <grub/mm.h>
  24 #include <grub/font.h>
  25 #include <grub/term.h>
  26 #include <grub/command.h>
  27 #include <grub/i18n.h>
  28 #include <grub/gfxmenu_view.h>
  29
  30 static grub_err_t
  31 grub_cmd_videotest (grub_command_t cmd __attribute__ ((unused)),
  32                     int argc __attribute__ ((unused)),
  33                     char **args __attribute__ ((unused)))
  34 {
  35   grub_err_t err;
  36   grub_video_color_t color;
  37   unsigned int x;
  38   unsigned int y;
  39   unsigned int width;
  40   unsigned int height;
  41   int i;
  42   struct grub_video_render_target *text_layer;
  43   grub_video_color_t palette[16];
  44
  45   err = grub_video_set_mode ("auto", GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0);
  46   if (err)
  47     return err;
  48
  49   grub_video_get_viewport (&x, &y, &width, &height);
  50
  51   {
  52     const char *str;
  53     int texty;
  54     grub_font_t sansbig;
  55     grub_font_t sans;
  56     grub_font_t sanssmall;
  57     grub_font_t fixed;
  58     struct grub_font_glyph *glyph;
  59
  60     grub_video_create_render_target (&text_layer, width, height,
  61                                      GRUB_VIDEO_MODE_TYPE_RGB
  62                                      | GRUB_VIDEO_MODE_TYPE_ALPHA);
  63
  64     grub_video_set_active_render_target (text_layer);
  65
  66     color = grub_video_map_rgb (0, 255, 255);
  67     sansbig = grub_font_get ("Unknown Regular 16");
  68     sans = grub_font_get ("Unknown Regular 16");
  69     sanssmall = grub_font_get ("Unknown Regular 16");
  70     fixed = grub_font_get ("Fixed 20");
  71     if (! sansbig || ! sans || ! sanssmall || ! fixed)
  72       return grub_error (GRUB_ERR_BAD_FONT, "no font loaded");
  73
  74     glyph = grub_font_get_glyph (fixed, '*');
  75     grub_font_draw_glyph (glyph, color, 200 ,0);
  76
  77     color = grub_video_map_rgb (255, 255, 255);
  78
  79     texty = 32;
  80     grub_font_draw_string ("The quick brown fox jumped over the lazy dog.",
  81                            sans, color, 16, texty);
  82     texty += grub_font_get_descent (sans) + grub_font_get_leading (sans);
  83
  84     texty += grub_font_get_ascent (fixed);
  85     grub_font_draw_string ("The quick brown fox jumped over the lazy dog.",
  86                            fixed, color, 16, texty);
  87     texty += grub_font_get_descent (fixed) + grub_font_get_leading (fixed);
  88
  89     /* To convert Unicode characters into UTF-8 for this test, the following
  90        command is useful:
  91        echo -ne '\x00\x00\x26\x3A' | iconv -f UTF-32BE -t UTF-8 | od -t x1
  92        This converts the Unicode character U+263A to UTF-8.  */
  93
  94     /* Characters used:
  95        Code point  Description                    UTF-8 encoding
  96        ----------- ------------------------------ --------------
  97        U+263A      unfilled smiley face           E2 98 BA
  98        U+00A1      inverted exclamation point     C2 A1
  99        U+00A3      British pound currency symbol  C2 A3
 100        U+03C4      Greek tau                      CF 84
 101        U+00E4      lowercase letter a with umlaut C3 A4
 102        U+2124      set 'Z' symbol (integers)      E2 84 A4
 103        U+2287      subset symbol                  E2 8A 87
 104        U+211D      set 'R' symbol (real numbers)  E2 84 9D  */
 105
 106     str =
 107       "Unicode test: happy\xE2\x98\xBA \xC2\xA3 5.00"
 108       " \xC2\xA1\xCF\x84\xC3\xA4u! "
 109       " \xE2\x84\xA4\xE2\x8A\x87\xE2\x84\x9D";
 110     color = grub_video_map_rgb (128, 128, 255);
 111
 112     /* All characters in the string exist in the 'Fixed 20' (10x20) font.  */
 113     texty += grub_font_get_ascent(fixed);
 114     grub_font_draw_string (str, fixed, color, 16, texty);
 115     texty += grub_font_get_descent (fixed) + grub_font_get_leading (fixed);
 116
 117     texty += grub_font_get_ascent(sansbig);
 118     grub_font_draw_string (str, sansbig, color, 16, texty);
 119     texty += grub_font_get_descent (sansbig) + grub_font_get_leading (sansbig);
 120
 121     texty += grub_font_get_ascent(sans);
 122     grub_font_draw_string (str, sans, color, 16, texty);
 123     texty += grub_font_get_descent (sans) + grub_font_get_leading (sans);
 124
 125     texty += grub_font_get_ascent(sanssmall);
 126     grub_font_draw_string (str, sanssmall, color, 16, texty);
 127     texty += (grub_font_get_descent (sanssmall)
 128               + grub_font_get_leading (sanssmall));
 129
 130     glyph = grub_font_get_glyph (fixed, '*');
 131
 132     for (i = 0; i < 16; i++)
 133       {
 134         color = grub_video_map_color (i);
 135         palette[i] = color;
 136         grub_font_draw_glyph (glyph, color, 16 + i * 16, 220);
 137       }
 138   }
 139
 140   grub_video_set_active_render_target (GRUB_VIDEO_RENDER_TARGET_DISPLAY);
 141
 142   for (i = 0; i < 2; i++)
 143     {
 144       color = grub_video_map_rgb (0, 0, 0);
 145       grub_video_fill_rect (color, 0, 0, width, height);
 146
 147       color = grub_video_map_rgb (255, 0, 0);
 148       grub_video_fill_rect (color, 0, 0, 100, 100);
 149
 150       color = grub_video_map_rgb (0, 255, 255);
 151       grub_video_fill_rect (color, 100, 100, 100, 100);
 152
 153       grub_video_set_viewport (x + 150, y + 150,
 154                                width - 150 * 2, height - 150 * 2);
 155       color = grub_video_map_rgb (77, 33, 77);
 156       grub_video_fill_rect (color, 0, 0, width, height);
 157       grub_video_swap_buffers ();
 158     }
 159
 160   for (i = 0; i < 5; i++)
 161     {
 162       color = grub_video_map_rgb (i, 33, 77);
 163       grub_video_fill_rect (color, 0, 0, width, height);
 164       grub_video_blit_render_target (text_layer, GRUB_VIDEO_BLIT_BLEND, 0, 0,
 165                                      0, 0, width, height);
 166       grub_video_swap_buffers ();
 167     }
 168
 169   grub_getkey ();
 170
 171   grub_video_delete_render_target (text_layer);
 172
 173   grub_video_restore ();
 174
 175   for (i = 0; i < 16; i++)
 176     grub_printf("color %d: %08x\n", i, palette[i]);
 177
 178   grub_errno = GRUB_ERR_NONE;
 179   return grub_errno;
 180 }
 181
 182 static grub_command_t cmd;
 183
 184 GRUB_MOD_INIT(videotest)
 185 {
 186   cmd = grub_register_command ("videotest", grub_cmd_videotest,
 187                                0, N_("Test video subsystem."));
 188 }
 189
 190 GRUB_MOD_FINI(videotest)
 191 {
 192   grub_unregister_command (cmd);
 193 }