freeldr/freeldr/menu.c

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1999, 2000  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program 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 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program 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 this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #include "freeldr.h"
  21 #include "stdlib.h"
  22 #include "tui.h"
  23 #include "menu.h"
  24 #include "options.h"
  25
  26 static int nOSListBoxLeft;
  27 static int nOSListBoxRight;
  28 static int nOSListBoxTop;
  29 static int nOSListBoxBottom;
  30
  31 static int nOSSelected = 0; // Currently selected OS (zero based)
  32
  33 int RunMenu(void)
  34 {
  35         int             key;
  36         int             second;
  37         BOOL    bDone = FALSE;
  38
  39         if (nTimeOut > 0)
  40                 nTimeOut++; // Increment the timeout since 0 doesn't count for a second
  41
  42         // Initialise the menu
  43         InitMenu();
  44
  45         // Update the menu
  46         DrawMenu();
  47
  48         second = getsecond();
  49
  50         // Loop
  51         do
  52         {
  53                 // Check for a keypress
  54                 if (kbhit())
  55                 {
  56                         // Cancel the timeout
  57                         if (nTimeOut != -1)
  58                         {
  59                                 nTimeOut = -1;
  60                                 DrawMenu();
  61                         }
  62
  63                         // Get the key
  64                         key = getch();
  65
  66                         // Is it extended?
  67                         if (key == 0)
  68                                 key = getch(); // Yes - so get the extended key
  69
  70                         // Process the key
  71                         switch (key)
  72                         {
  73                         case KEY_UP:
  74                                 if (nOSSelected)
  75                                 {
  76                                         nOSSelected--;
  77
  78                                         // Update the menu
  79                                         DrawMenu();
  80                                 }
  81                                 break;
  82                         case KEY_DOWN:
  83                                 if (nOSSelected < (nNumOS-1))
  84                                 {
  85                                         nOSSelected++;
  86
  87                                         // Update the menu
  88                                         DrawMenu();
  89                                 }
  90                                 break;
  91                         case KEY_ENTER:
  92                                 bDone = TRUE;
  93                                 break;
  94                         case KEY_F8:
  95                                 DoOptionsMenu();
  96                                 DrawBackdrop();
  97                                 DrawMenu();
  98                                 break;
  99                         }
 100                 }
 101
 102                 // Update the date & time
 103                 UpdateDateTime();
 104
 105                 if (nTimeOut > 0)
 106                 {
 107                         if (getsecond() != second)
 108                         {
 109                                 second = getsecond();
 110                                 nTimeOut--;
 111
 112                                 // Update the menu
 113                                 DrawMenu();
 114                         }
 115                 }
 116
 117                 if (nTimeOut == 0)
 118                         bDone = TRUE;
 119         }
 120         while (!bDone);
 121
 122         return nOSSelected;
 123 }
 124
 125 void InitMenu(void)
 126 {
 127         int             i;
 128         int             height = 1; // Allow room for top & bottom borders
 129         int             width = 0;
 130
 131         for(i=0; i<nNumOS; i++)
 132         {
 133                 height++;
 134                 if(strlen(OSList[i].name) > width)
 135                         width = strlen(OSList[i].name);
 136         }
 137         width += 18; // Allow room for left & right borders, plus 8 spaces on each side
 138
 139         // Calculate the OS list box area
 140         nOSListBoxLeft = (nScreenWidth - width) / 2;
 141         nOSListBoxRight = nOSListBoxLeft + width;
 142         nOSListBoxTop = (nScreenHeight - height) / 2 + 1;
 143         nOSListBoxBottom = nOSListBoxTop + height;
 144 }
 145
 146 void DrawMenu(void)
 147 {
 148         int             i, j;
 149         char    text[260];
 150         char    temp[260];
 151         int             space, space_left, space_right;
 152
 153         // Update the status bar
 154         DrawStatusText(" Use \x18\x19 to select, ENTER to boot. Press F8 for advanced options.");
 155
 156         DrawBox(nOSListBoxLeft, nOSListBoxTop, nOSListBoxRight, nOSListBoxBottom, D_VERT, D_HORZ, TRUE, TRUE, ATTR(cMenuFgColor, cMenuBgColor));
 157
 158         for(i=0; i<nNumOS; i++)
 159         {
 160                 space = (nOSListBoxRight - nOSListBoxLeft - 2) - strlen(OSList[i].name);
 161                 space_left = (space / 2) + 1;
 162                 space_right = (space - space_left) + 1;
 163
 164                 text[0] = '\0';
 165                 for(j=0; j<space_left; j++)
 166                         strcat(text, " ");
 167                 strcat(text, OSList[i].name);
 168                 for(j=0; j<space_right; j++)
 169                         strcat(text, " ");
 170
 171                 if(i == nOSSelected)
 172                 {
 173                         DrawText(nOSListBoxLeft+1, nOSListBoxTop+1+i, text, ATTR(cSelectedTextColor, cSelectedTextBgColor));
 174                 }
 175                 else
 176                 {
 177                         DrawText(nOSListBoxLeft+1, nOSListBoxTop+1+i, text, ATTR(cTextColor, cMenuBgColor));
 178                 }
 179         }
 180
 181         if (nTimeOut >= 0)
 182         {
 183                 strcpy(text, "[ Time Remaining: ");
 184                 itoa(nTimeOut, temp, 10);
 185                 strcat(text, temp);
 186                 strcat(text, " ]");
 187
 188                 DrawText(nOSListBoxRight - strlen(text) - 1, nOSListBoxBottom, text, ATTR(cMenuFgColor, cMenuBgColor));
 189         }
 190 }