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
  28 static grub_err_t
  29 grub_cmd_videotest (grub_command_t cmd __attribute__ ((unused)),
  30                     int argc __attribute__ ((unused)),
  31                     char **args __attribute__ ((unused)))
  32 {
  33   if (grub_video_set_mode ("1024x768;800x600;640x480", 0) != GRUB_ERR_NONE)
  34     return grub_errno;
  35
  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   grub_font_t sansbig;
  43   grub_font_t sans;
  44   grub_font_t sanssmall;
  45   grub_font_t fixed;
  46   struct grub_font_glyph *glyph;
  47   struct grub_video_render_target *text_layer;
  48   grub_video_color_t palette[16];
  49   const char *str;
  50   int texty;
  51
  52   grub_video_get_viewport (&x, &y, &width, &height);
  53
  54   grub_video_create_render_target (&text_layer, width, height,
  55                                    GRUB_VIDEO_MODE_TYPE_RGB
  56                                    | GRUB_VIDEO_MODE_TYPE_ALPHA);
  57
  58   grub_video_set_active_render_target (GRUB_VIDEO_RENDER_TARGET_DISPLAY);
  59
  60   color = grub_video_map_rgb (0, 0, 0);
  61   grub_video_fill_rect (color, 0, 0, width, height);
  62
  63   color = grub_video_map_rgb (255, 0, 0);
  64   grub_video_fill_rect (color, 0, 0, 100, 100);
  65
  66   color = grub_video_map_rgb (0, 255, 255);
  67   grub_video_fill_rect (color, 100, 100, 100, 100);
  68
  69   sansbig = grub_font_get ("Helvetica Bold 24");
  70   sans = grub_font_get ("Helvetica Bold 14");
  71   sanssmall = grub_font_get ("Helvetica 8");
  72   fixed = grub_font_get ("Fixed 20");
  73   if (! sansbig || ! sans || ! sanssmall || ! fixed)
  74     return grub_error (GRUB_ERR_BAD_FONT, "No font loaded.");
  75
  76   glyph = grub_font_get_glyph (fixed, '*');
  77   grub_font_draw_glyph (glyph, color, 200 ,0);
  78
  79   grub_video_set_viewport (x + 150, y + 150,
  80                            width - 150 * 2, height - 150 * 2);
  81   color = grub_video_map_rgb (77, 33, 77);
  82   grub_video_fill_rect (color, 0, 0, width, height);
  83
  84   grub_video_set_active_render_target (text_layer);
  85
  86   color = grub_video_map_rgb (255, 255, 255);
  87
  88   texty = 32;
  89   grub_font_draw_string ("The quick brown fox jumped over the lazy dog.",
  90                          sans, color, 16, texty);
  91   texty += grub_font_get_descent (sans) + grub_font_get_leading (sans);
  92
  93   texty += grub_font_get_ascent (fixed);
  94   grub_font_draw_string ("The quick brown fox jumped over the lazy dog.",
  95                          fixed, color, 16, texty);
  96   texty += grub_font_get_descent (fixed) + grub_font_get_leading (fixed);
  97
  98   /* To convert Unicode characters into UTF-8 for this test, the following
  99      command is useful:
 100        echo -ne '\x00\x00\x26\x3A' | iconv -f UTF-32BE -t UTF-8 | od -t x1
 101      This converts the Unicode character U+263A to UTF-8.  */
 102
 103   /* Characters used:
 104      Code point  Description                    UTF-8 encoding
 105      ----------- ------------------------------ --------------
 106      U+263A      unfilled smiley face           E2 98 BA
 107      U+00A1      inverted exclamation point     C2 A1
 108      U+00A3      British pound currency symbol  C2 A3
 109      U+03C4      Greek tau                      CF 84
 110      U+00E4      lowercase letter a with umlaut C3 A4
 111      U+2124      set 'Z' symbol (integers)      E2 84 A4
 112      U+2287      subset symbol                  E2 8A 87
 113      U+211D      set 'R' symbol (real numbers)  E2 84 9D  */
 114
 115   str =
 116     "Unicode test: happy\xE2\x98\xBA \xC2\xA3 5.00"
 117     " \xC2\xA1\xCF\x84\xC3\xA4u! "
 118     " \xE2\x84\xA4\xE2\x8A\x87\xE2\x84\x9D";
 119   color = grub_video_map_rgb (128, 128, 255);
 120
 121   /* All characters in the string exist in the 'Fixed 20' (10x20) font.  */
 122   texty += grub_font_get_ascent(fixed);
 123   grub_font_draw_string (str, fixed, color, 16, texty);
 124   texty += grub_font_get_descent (fixed) + grub_font_get_leading (fixed);
 125
 126   /* Some character don't exist in the Helvetica font, so the font engine
 127      will fall back to using glyphs from another font that does contain them.
 128      TODO The font engine should be smart about selecting a replacement font
 129      and prioritize fonts with similar sizes.  */
 130
 131   texty += grub_font_get_ascent(sansbig);
 132   grub_font_draw_string (str, sansbig, color, 16, texty);
 133   texty += grub_font_get_descent (sansbig) + grub_font_get_leading (sansbig);
 134
 135   texty += grub_font_get_ascent(sans);
 136   grub_font_draw_string (str, sans, color, 16, texty);
 137   texty += grub_font_get_descent (sans) + grub_font_get_leading (sans);
 138
 139   texty += grub_font_get_ascent(sanssmall);
 140   grub_font_draw_string (str, sanssmall, color, 16, texty);
 141   texty += (grub_font_get_descent (sanssmall)
 142             + grub_font_get_leading (sanssmall));
 143
 144   glyph = grub_font_get_glyph (fixed, '*');
 145
 146   for (i = 0; i < 16; i++)
 147     {
 148       color = grub_video_map_color (i);
 149       palette[i] = color;
 150       grub_font_draw_glyph (glyph, color, 16 + i * 16, 220);
 151     }
 152
 153   grub_video_set_active_render_target (GRUB_VIDEO_RENDER_TARGET_DISPLAY);
 154
 155   for (i = 0; i < 255; i++)
 156     {
 157       color = grub_video_map_rgb (i, 33, 77);
 158       grub_video_fill_rect (color, 0, 0, width, height);
 159       grub_video_blit_render_target (text_layer, GRUB_VIDEO_BLIT_BLEND, 0, 0,
 160                                      0, 0, width, height);
 161     }
 162
 163   grub_getkey ();
 164
 165   grub_video_delete_render_target (text_layer);
 166
 167   grub_video_restore ();
 168
 169   for (i = 0; i < 16; i++)
 170     grub_printf("color %d: %08x\n", i, palette[i]);
 171
 172   grub_errno = GRUB_ERR_NONE;
 173   return grub_errno;
 174 }
 175
 176 static grub_command_t cmd;
 177
 178 GRUB_MOD_INIT(videotest)
 179 {
 180   cmd = grub_register_command ("videotest", grub_cmd_videotest,
 181                                0, "Test video subsystem");
 182 }
 183
 184 GRUB_MOD_FINI(videotest)
 185 {
 186   grub_unregister_command (cmd);
 187 }