pc/cons_nt.c

   1 /* Client interface for General purpose Win32 console save/restore server
   2    Having the same interface as its Linux counterpart:
   3         Copyright (C) 1994 Janne Kukonlehto <jtklehto@stekt.oulu.fi>
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19    Note:
  20         show_console_contents doesn't know how to write to its window
  21         the rest works fine.
  22 */
  23 #include <config.h>
  24
  25 #include "../src/global.h"
  26 #include "trace_nt.h"
  27
  28 int    cons_saver_pid = 1;
  29
  30 #include "../src/tty.h"
  31 #include "../src/util.h"
  32 #include "../src/win.h"
  33 #include "../src/cons.saver.h"
  34
  35 signed char console_flag = 1;
  36 static HANDLE hSaved, hNew;
  37
  38 void show_console_contents (int starty, unsigned char begin_line,
  39         unsigned char end_line)
  40 {
  41     COORD c0 = { 0, 0 };
  42     COORD csize;
  43     SMALL_RECT rect;
  44     CHAR_INFO *pchar;
  45
  46     csize.X = COLS;
  47     csize.Y = end_line-begin_line;
  48     rect.Left = 0;
  49     rect.Top = begin_line;
  50     rect.Right = COLS;
  51     rect.Bottom = end_line;
  52
  53 /*    -- This code reads characters and attributes */
  54     pchar = malloc (sizeof(CHAR_INFO) *  (end_line-begin_line) * COLS);
  55     /* Copy from one console to the curses virtual screen */
  56     win32APICALL(ReadConsoleOutput (hSaved, pchar, csize, c0, &rect));
  57
  58     /* FIXME: this should've work,
  59        but refresh() is called after this write :-( */
  60     win32APICALL(WriteConsoleOutput (hNew, pchar, csize, c0, &rect));
  61
  62     free (pchar);
  63 }
  64
  65 void handle_console (unsigned char action)
  66 {
  67     static SECURITY_ATTRIBUTES sa;
  68     CONSOLE_SCREEN_BUFFER_INFO csbi;
  69
  70     switch (action){
  71     case CONSOLE_INIT:
  72         /* Save Standard handle */
  73         hSaved = GetStdHandle (STD_OUTPUT_HANDLE);
  74
  75         sa.nLength = sizeof(SECURITY_ATTRIBUTES);
  76         sa.lpSecurityDescriptor = NULL;
  77         /* Create a new console buffer */
  78         sa.bInheritHandle = TRUE;
  79         win32APICALL_HANDLE(hNew,
  80                 CreateConsoleScreenBuffer (GENERIC_WRITE | GENERIC_READ,
  81                                 FILE_SHARE_READ | FILE_SHARE_WRITE, &sa,
  82                                 CONSOLE_TEXTMODE_BUFFER, NULL));
  83         win32APICALL(GetConsoleScreenBufferInfo(hSaved, &csbi));
  84         win32APICALL(SetConsoleScreenBufferSize(hNew, csbi.dwSize));
  85
  86         /* that becomes standard handle */
  87         win32APICALL(SetConsoleActiveScreenBuffer(hNew));
  88         win32APICALL(SetConsoleMode(hNew, ENABLE_PROCESSED_INPUT));
  89         win32APICALL(SetStdHandle(STD_OUTPUT_HANDLE, hNew));
  90         break;
  91
  92     case CONSOLE_DONE:
  93         win32APICALL(CloseHandle (hNew));
  94         break;
  95
  96     case CONSOLE_SAVE:
  97         /* Current = our standard handle */
  98         win32APICALL(SetConsoleActiveScreenBuffer (hNew));
  99         win32APICALL(SetStdHandle (STD_OUTPUT_HANDLE, hNew));
 100         break;
 101
 102     case CONSOLE_RESTORE:
 103         /* Put saved (shell) screen buffer */
 104         win32APICALL(SetConsoleActiveScreenBuffer (hSaved));
 105         win32APICALL(SetStdHandle (STD_OUTPUT_HANDLE, hSaved));
 106         break;
 107     default:
 108         win32Trace(("Invalid action code %d sent to handle_console", action));
 109     }
 110 }