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 <windows.h>
  29 #include "keycodes.h"
  30 #include "input/input.h"
  31 #include "mp_fifo.h"
  32 #include "getch2.h"
  33
  34 // HACK, stdin is used as something else below
  35 #undef stdin
  36
  37 int mp_input_slave_cmd_func(int fd,char* dest,int size){
  38   DWORD retval;
  39   HANDLE stdin = GetStdHandle(STD_INPUT_HANDLE);
  40   if(!PeekNamedPipe(stdin, NULL, size, &retval, NULL, NULL) || !retval){
  41           return MP_INPUT_NOTHING;
  42   }
  43   if(retval>size)retval=size;
  44   ReadFile(stdin, dest, retval, &retval, NULL);
  45   if(retval)return retval;
  46   return MP_INPUT_NOTHING;
  47 }
  48
  49 int screen_width=80;
  50 int screen_height=24;
  51 char * erase_to_end_of_line = NULL;
  52
  53 void get_screen_size(void){
  54 }
  55
  56 static HANDLE stdin;
  57 static int getch2_status=0;
  58
  59 static int getch2_internal(void)
  60 {
  61         INPUT_RECORD eventbuffer[128];
  62     DWORD retval;
  63         int i=0;
  64     if(!getch2_status)return -1;
  65     /*check if there are input events*/
  66         if(!GetNumberOfConsoleInputEvents(stdin,&retval))
  67         {
  68                 printf("getch2: can't get number of input events: %i\n",GetLastError());
  69                 return -1;
  70         }
  71     if(retval<=0)return -1;
  72
  73         /*read all events*/
  74         if(!ReadConsoleInput(stdin,eventbuffer,128,&retval))
  75         {
  76                 printf("getch: can't read input events\n");
  77                 return -1;
  78         }
  79
  80         /*filter out keyevents*/
  81     for (i = 0; i < retval; i++)
  82     {
  83                 switch(eventbuffer[i].EventType)
  84                 {
  85                         case KEY_EVENT:
  86                                 /*only a pressed key is interresting for us*/
  87                                 if(eventbuffer[i].Event.KeyEvent.bKeyDown == TRUE)
  88                                 {
  89                                         /*check for special keys*/
  90                                         switch(eventbuffer[i].Event.KeyEvent.wVirtualKeyCode)
  91                                         {
  92                                         case VK_HOME:
  93                                                 return KEY_HOME;
  94                                         case VK_END:
  95                                                 return KEY_END;
  96                                         case VK_DELETE:
  97                                                 return KEY_DEL;
  98                     case VK_INSERT:
  99                                                 return KEY_INS;
 100                                         case VK_BACK:
 101                                                 return KEY_BS;
 102                                         case VK_PRIOR:
 103                                                 return KEY_PGUP;
 104                                         case VK_NEXT:
 105                                                 return KEY_PGDWN;
 106                                         case VK_RETURN:
 107                                                 return KEY_ENTER;
 108                                         case VK_ESCAPE:
 109                                                 return KEY_ESC;
 110                                         case VK_LEFT:
 111                                                 return KEY_LEFT;
 112                                         case VK_UP:
 113                                                 return KEY_UP;
 114                                         case VK_RIGHT:
 115                                                 return KEY_RIGHT;
 116                                         case VK_DOWN:
 117                                                 return KEY_DOWN;
 118                     case VK_SHIFT:
 119                         continue;
 120                                         }
 121                                         /*check for function keys*/
 122                                 if(0x87 >= eventbuffer[i].Event.KeyEvent.wVirtualKeyCode && eventbuffer[i].Event.KeyEvent.wVirtualKeyCode >= 0x70)
 123                                                 return KEY_F + 1 + eventbuffer[i].Event.KeyEvent.wVirtualKeyCode - 0x70;
 124
 125                                         /*only characters should be remaining*/
 126                                         //printf("getch2: YOU PRESSED \"%c\" \n",eventbuffer[i].Event.KeyEvent.uChar.AsciiChar);
 127                                     return eventbuffer[i].Event.KeyEvent.uChar.AsciiChar;
 128                                 }
 129                                 break;
 130
 131                         case MOUSE_EVENT:
 132             case WINDOW_BUFFER_SIZE_EVENT:
 133             case FOCUS_EVENT:
 134             case MENU_EVENT:
 135             default:
 136                                 //printf("getch2: unsupported event type");
 137                             break;
 138         }
 139     }
 140         return -1;
 141 }
 142
 143 void getch2(struct mp_fifo *fifo)
 144 {
 145     int r = getch2_internal();
 146     if (r >= 0)
 147         mplayer_put_key(fifo, r);
 148 }
 149
 150 void getch2_enable(void)
 151 {
 152         DWORD retval;
 153     stdin = GetStdHandle(STD_INPUT_HANDLE);
 154         if(!GetNumberOfConsoleInputEvents(stdin,&retval))
 155         {
 156                 printf("getch2: %i can't get number of input events  [disabling console input]\n",GetLastError());
 157                 getch2_status = 0;
 158         }
 159     else getch2_status=1;
 160 }
 161
 162 void getch2_disable(void)
 163 {
 164     if(!getch2_status) return; // already disabled / never enabled
 165     getch2_status=0;
 166 }
 167
 168 #ifdef CONFIG_ICONV
 169 static const struct {
 170     unsigned cp;
 171     char* alias;
 172 } cp_alias[] = {
 173     { 20127, "ASCII" },
 174     { 20866, "KOI8-R" },
 175     { 21866, "KOI8-RU" },
 176     { 28591, "ISO-8859-1" },
 177     { 28592, "ISO-8859-2" },
 178     { 28593, "ISO-8859-3" },
 179     { 28594, "ISO-8859-4" },
 180     { 28595, "ISO-8859-5" },
 181     { 28596, "ISO-8859-6" },
 182     { 28597, "ISO-8859-7" },
 183     { 28598, "ISO-8859-8" },
 184     { 28599, "ISO-8859-9" },
 185     { 28605, "ISO-8859-15" },
 186     { 65001, "UTF-8" },
 187     { 0, NULL }
 188 };
 189
 190 char* get_term_charset(void)
 191 {
 192     static char codepage[10];
 193     unsigned i, cpno = GetConsoleOutputCP();
 194     if (!cpno)
 195         cpno = GetACP();
 196     if (!cpno)
 197         return NULL;
 198
 199     for (i = 0; cp_alias[i].cp; i++)
 200         if (cpno == cp_alias[i].cp)
 201             return cp_alias[i].alias;
 202
 203     snprintf(codepage, sizeof(codepage), "CP%u", cpno);
 204     return codepage;
 205 }
 206 #endif