osdep/getch2-win.c

   1 /* Windows TermIO
   2  *
   3  * copyright (C) 2003 Sascha Sommer
   4  *
   5  * This file is part of MPlayer.
   6  *
   7  * MPlayer is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * MPlayer is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 // See  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp
  23 // for additional virtual keycodes
  24
  25
  26 #include "config.h"
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <windows.h>
  30 #include "keycodes.h"
  31 #include "input/input.h"
  32 #include "mp_fifo.h"
  33 #include "getch2.h"
  34
  35 // HACK, stdin is used as something else below
  36 #undef stdin
  37
  38 int mp_input_slave_cmd_func(int fd,char* dest,int size){
  39   DWORD retval;
  40   HANDLE stdin = GetStdHandle(STD_INPUT_HANDLE);
  41   if(!PeekNamedPipe(stdin, NULL, size, &retval, NULL, NULL) || !retval){
  42           return MP_INPUT_NOTHING;
  43   }
  44   if(retval>size)retval=size;
  45   ReadFile(stdin, dest, retval, &retval, NULL);
  46   if(retval)return retval;
  47   return MP_INPUT_NOTHING;
  48 }
  49
  50 int screen_width=80;
  51 int screen_height=24;
  52 char * erase_to_end_of_line = NULL;
  53
  54 void get_screen_size(void){
  55 }
  56
  57 static HANDLE stdin;
  58 static int getch2_status=0;
  59
  60 static int getch2_internal(void)
  61 {
  62         INPUT_RECORD eventbuffer[128];
  63     DWORD retval;
  64         int i=0;
  65     if(!getch2_status)return -1;
  66     /*check if there are input events*/
  67         if(!GetNumberOfConsoleInputEvents(stdin,&retval))
  68         {
  69                 printf("getch2: can't get number of input events: %i\n",GetLastError());
  70                 return -1;
  71         }
  72     if(retval<=0)return -1;
  73
  74         /*read all events*/
  75         if(!ReadConsoleInput(stdin,eventbuffer,128,&retval))
  76         {
  77                 printf("getch: can't read input events\n");
  78                 return -1;
  79         }
  80
  81         /*filter out keyevents*/
  82     for (i = 0; i < retval; i++)
  83     {
  84                 switch(eventbuffer[i].EventType)
  85                 {
  86                         case KEY_EVENT:
  87                                 /*only a pressed key is interresting for us*/
  88                                 if(eventbuffer[i].Event.KeyEvent.bKeyDown == TRUE)
  89                                 {
  90                                         /*check for special keys*/
  91                                         switch(eventbuffer[i].Event.KeyEvent.wVirtualKeyCode)
  92                                         {
  93                                         case VK_HOME:
  94                                                 return KEY_HOME;
  95                                         case VK_END:
  96                                                 return KEY_END;
  97                                         case VK_DELETE:
  98                                                 return KEY_DEL;
  99                     case VK_INSERT:
 100                                                 return KEY_INS;
 101                                         case VK_BACK:
 102                                                 return KEY_BS;
 103                                         case VK_PRIOR:
 104                                                 return KEY_PGUP;
 105                                         case VK_NEXT:
 106                                                 return KEY_PGDWN;
 107                                         case VK_RETURN:
 108                                                 return KEY_ENTER;
 109                                         case VK_ESCAPE:
 110                                                 return KEY_ESC;
 111                                         case VK_LEFT:
 112                                                 return KEY_LEFT;
 113                                         case VK_UP:
 114                                                 return KEY_UP;
 115                                         case VK_RIGHT:
 116                                                 return KEY_RIGHT;
 117                                         case VK_DOWN:
 118                                                 return KEY_DOWN;
 119                     case VK_SHIFT:
 120                         continue;
 121                                         }
 122                                         /*check for function keys*/
 123                                 if(0x87 >= eventbuffer[i].Event.KeyEvent.wVirtualKeyCode && eventbuffer[i].Event.KeyEvent.wVirtualKeyCode >= 0x70)
 124                                                 return KEY_F + 1 + eventbuffer[i].Event.KeyEvent.wVirtualKeyCode - 0x70;
 125
 126                                         /*only characters should be remaining*/
 127                                         //printf("getch2: YOU PRESSED \"%c\" \n",eventbuffer[i].Event.KeyEvent.uChar.AsciiChar);
 128                                     return eventbuffer[i].Event.KeyEvent.uChar.AsciiChar;
 129                                 }
 130                                 break;
 131
 132                         case MOUSE_EVENT:
 133             case WINDOW_BUFFER_SIZE_EVENT:
 134             case FOCUS_EVENT:
 135             case MENU_EVENT:
 136             default:
 137                                 //printf("getch2: unsupported event type");
 138                             break;
 139         }
 140     }
 141         return -1;
 142 }
 143
 144 void getch2(struct mp_fifo *fifo)
 145 {
 146     int r = getch2_internal();
 147     if (r >= 0)
 148         mplayer_put_key(fifo, r);
 149 }
 150
 151 void getch2_enable(void)
 152 {
 153         DWORD retval;
 154     stdin = GetStdHandle(STD_INPUT_HANDLE);
 155         if(!GetNumberOfConsoleInputEvents(stdin,&retval))
 156         {
 157                 printf("getch2: %i can't get number of input events  [disabling console input]\n",GetLastError());
 158                 getch2_status = 0;
 159         }
 160     else getch2_status=1;
 161 }
 162
 163 void getch2_disable(void)
 164 {
 165     if(!getch2_status) return; // already disabled / never enabled
 166     getch2_status=0;
 167 }
 168
 169 #ifdef CONFIG_ICONV
 170 static const struct {
 171     unsigned cp;
 172     char* alias;
 173 } cp_alias[] = {
 174     { 20127, "ASCII" },
 175     { 20866, "KOI8-R" },
 176     { 21866, "KOI8-RU" },
 177     { 28591, "ISO-8859-1" },
 178     { 28592, "ISO-8859-2" },
 179     { 28593, "ISO-8859-3" },
 180     { 28594, "ISO-8859-4" },
 181     { 28595, "ISO-8859-5" },
 182     { 28596, "ISO-8859-6" },
 183     { 28597, "ISO-8859-7" },
 184     { 28598, "ISO-8859-8" },
 185     { 28599, "ISO-8859-9" },
 186     { 28605, "ISO-8859-15" },
 187     { 65001, "UTF-8" },
 188     { 0, NULL }
 189 };
 190
 191 char* get_term_charset(void)
 192 {
 193     char codepage[10];
 194     unsigned i, cpno = GetConsoleOutputCP();
 195     if (!cpno)
 196         cpno = GetACP();
 197     if (!cpno)
 198         return NULL;
 199
 200     for (i = 0; cp_alias[i].cp; i++)
 201         if (cpno == cp_alias[i].cp)
 202             return strdup(cp_alias[i].alias);
 203
 204     snprintf(codepage, sizeof(codepage), "CP%u", cpno);
 205     return strdup(codepage);
 206 }
 207 #endif