arch/all-pc/boot/grub2-aros/grub-core/gfxmenu/gfxmenu.c

   1 /* gfxmenu.c - Graphical menu interface controller. */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2008  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/types.h>
  21 #include <grub/misc.h>
  22 #include <grub/mm.h>
  23 #include <grub/err.h>
  24 #include <grub/dl.h>
  25 #include <grub/command.h>
  26 #include <grub/video.h>
  27 #include <grub/gfxterm.h>
  28 #include <grub/bitmap.h>
  29 #include <grub/bitmap_scale.h>
  30 #include <grub/term.h>
  31 #include <grub/env.h>
  32 #include <grub/normal.h>
  33 #include <grub/gfxwidgets.h>
  34 #include <grub/menu.h>
  35 #include <grub/menu_viewer.h>
  36 #include <grub/gfxmenu_model.h>
  37 #include <grub/gfxmenu_view.h>
  38 #include <grub/time.h>
  39 #include <grub/i18n.h>
  40
  41 GRUB_MOD_LICENSE ("GPLv3+");
  42
  43 static grub_gfxmenu_view_t cached_view;
  44
  45 static void
  46 grub_gfxmenu_viewer_fini (void *data __attribute__ ((unused)))
  47 {
  48 }
  49
  50 /* FIXME: Previously 't' changed to text menu is it necessary?  */
  51 static grub_err_t
  52 grub_gfxmenu_try (int entry, grub_menu_t menu, int nested)
  53 {
  54   grub_gfxmenu_view_t view = NULL;
  55   const char *theme_path;
  56   struct grub_menu_viewer *instance;
  57   grub_err_t err;
  58   struct grub_video_mode_info mode_info;
  59
  60   theme_path = grub_env_get ("theme");
  61   if (! theme_path)
  62     return grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"),
  63                        "theme");
  64
  65   instance = grub_zalloc (sizeof (*instance));
  66   if (!instance)
  67     return grub_errno;
  68
  69   err = grub_video_get_info (&mode_info);
  70   if (err)
  71     return err;
  72
  73   if (!cached_view || grub_strcmp (cached_view->theme_path, theme_path) != 0
  74       || cached_view->screen.width != mode_info.width
  75       || cached_view->screen.height != mode_info.height)
  76     {
  77       grub_free (cached_view);
  78       /* Create the view.  */
  79       cached_view = grub_gfxmenu_view_new (theme_path, mode_info.width,
  80                                            mode_info.height);
  81     }
  82
  83   if (! cached_view)
  84     {
  85       grub_free (instance);
  86       return grub_errno;
  87     }
  88
  89   view = cached_view;
  90
  91   view->double_repaint = (mode_info.mode_type
  92                           & GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED)
  93     && !(mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
  94   view->selected = entry;
  95   view->menu = menu;
  96   view->nested = nested;
  97   view->first_timeout = -1;
  98
  99   grub_video_set_viewport (0, 0, mode_info.width, mode_info.height);
 100   if (view->double_repaint)
 101     {
 102       grub_video_swap_buffers ();
 103       grub_video_set_viewport (0, 0, mode_info.width, mode_info.height);
 104     }
 105
 106   grub_gfxmenu_view_draw (view);
 107
 108   instance->data = view;
 109   instance->set_chosen_entry = grub_gfxmenu_set_chosen_entry;
 110   instance->fini = grub_gfxmenu_viewer_fini;
 111   instance->print_timeout = grub_gfxmenu_print_timeout;
 112   instance->clear_timeout = grub_gfxmenu_clear_timeout;
 113
 114   grub_menu_register_viewer (instance);
 115
 116   return GRUB_ERR_NONE;
 117 }
 118
 119 GRUB_MOD_INIT (gfxmenu)
 120 {
 121   struct grub_term_output *term;
 122
 123   FOR_ACTIVE_TERM_OUTPUTS(term)
 124     if (grub_gfxmenu_try_hook && term->fullscreen)
 125       {
 126         term->fullscreen ();
 127         break;
 128       }
 129
 130   grub_gfxmenu_try_hook = grub_gfxmenu_try;
 131 }
 132
 133 GRUB_MOD_FINI (gfxmenu)
 134 {
 135   grub_gfxmenu_view_destroy (cached_view);
 136   grub_gfxmenu_try_hook = NULL;
 137 }