pc/cons_os2.c

   1 /* Client interface for General purpose OS/2 console save/restore server.
   2         1997 Alexander Dong <ado@software-ag.de>
   3    Having the same interface as its Linux counterpart:
   4         Copyright (C) 1994 Janne Kukonlehto <jtklehto@stekt.oulu.fi>
   5
   6    This program 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 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program 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 this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19
  20 */
  21
  22 #include <config.h>
  23
  24 #ifdef __os2__
  25 #define INCL_BASE
  26 #define INCL_NOPM
  27 #define INCL_VIO
  28 #define INCL_KBD
  29 #define INCL_DOS
  30 #define INCL_SUB
  31 #define INCL_DOSERRORS
  32 #include <os2.h>
  33 #endif
  34
  35 #include "../src/tty.h"
  36 #include "../src/util.h"
  37 #include "../src/win.h"
  38 #include "../src/cons.saver.h"
  39
  40 signed char console_flag = 1;
  41 static unsigned char *scr_buffer;
  42 static unsigned char *pointer;
  43
  44 static int GetScrRows();
  45 static int GetScrCols();
  46
  47 static int GetScrRows()
  48 {
  49    VIOMODEINFO pvMode = {80};
  50    unsigned int hVio = 0;
  51    VioGetMode(&pvMode, hVio);
  52    return (pvMode.row ? pvMode.row: 25);
  53 }
  54
  55 static int GetScrCols()
  56 {
  57    VIOMODEINFO pvMode = {80};
  58    unsigned int hVio = 0;
  59    VioGetMode(&pvMode, hVio);
  60    return (pvMode.col ? pvMode.col: 80);
  61 }
  62
  63 void show_console_contents (int starty, unsigned char begin_line, unsigned char end_line)
  64 {
  65    int col = GetScrCols();
  66    int row = GetScrRows();
  67    int n;
  68    register int z;
  69
  70    pointer = scr_buffer;
  71    for (z=0; z<(begin_line * col); z++) {
  72       pointer++; pointer++;
  73    }
  74    n = (end_line - begin_line + 1) * col;
  75    VioWrtCellStr((PCH) pointer, (USHORT) n, begin_line, 0, 0);
  76    return;
  77 }
  78
  79 void handle_console (unsigned char action)
  80 {
  81    static int col;
  82    static int row;
  83    int        n;
  84
  85    switch (action) {
  86    case CONSOLE_INIT:           /* Initialize */
  87       col = GetScrCols();
  88       row = GetScrRows();
  89       scr_buffer = (unsigned char *) malloc(col * row * 2);  /* short values */
  90       n = col * row * 2;
  91       VioReadCellStr((PCH) scr_buffer, (USHORT *) &n, 0, 0, 0); /* Just save it */
  92       break;
  93    case CONSOLE_DONE:
  94       free(scr_buffer);
  95       break;
  96    case CONSOLE_SAVE:           /* Save the screen */
  97       n = col * row * 2;
  98       VioReadCellStr((PCH) scr_buffer, (USHORT *) &n, 0, 0, 0);
  99       break;
 100    case CONSOLE_RESTORE:
 101       n = col * row * 2;
 102       VioWrtCellStr ((PCH) scr_buffer, (USHORT) n, 0, 0, 0); /* Write it back */
 103       break;
 104    default:
 105       /* This is not possible, but if we are here, just save the screen */
 106       handle_console(CONSOLE_SAVE);
 107      break;
 108    }
 109    return;
 110 }