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 <stdint.h>
  29 #include <string.h>
  30 #include <windows.h>
  31 #include "input/keycodes.h"
  32 #include "input/input.h"
  33 #include "mp_fifo.h"
  34 #include "getch2.h"
  35
  36 int mp_input_slave_cmd_func(int fd,char* dest,int size){
  37   DWORD retval;
  38   HANDLE in = GetStdHandle(STD_INPUT_HANDLE);
  39   if(PeekNamedPipe(in, NULL, size, &retval, NULL, NULL)){
  40     if (size > retval) size = retval;
  41   } else {
  42     if (WaitForSingleObject(in, 0))
  43       size = 0;
  44   }
  45   if(!size){
  46           return MP_INPUT_NOTHING;
  47   }
  48   ReadFile(in, dest, size, &retval, NULL);
  49   if(retval)return retval;
  50   return MP_INPUT_NOTHING;
  51 }
  52
  53 int screen_width=80;
  54 int screen_height=24;
  55 char * erase_to_end_of_line = NULL;
  56
  57 void get_screen_size(void){
  58     CONSOLE_SCREEN_BUFFER_INFO cinfo;
  59     if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cinfo))
  60     {
  61         screen_width = cinfo.dwMaximumWindowSize.X;
  62         screen_height = cinfo.dwMaximumWindowSize.Y;
  63     }
  64 }
  65
  66 static HANDLE in;
  67 static int getch2_status=0;
  68
  69 static int getch2_internal(void)
  70 {
  71         INPUT_RECORD eventbuffer[128];
  72     DWORD retval;
  73         int i=0;
  74     if(!getch2_status){
  75       // supports e.g. MinGW xterm, unfortunately keys are only received after
  76       // enter was pressed.
  77       uint8_t c;
  78       if (!PeekNamedPipe(in, NULL, 1, &retval, NULL, NULL) || !retval)
  79         return -1;
  80       ReadFile(in, &c, 1, &retval, NULL);
  81       return retval == 1 ? c : -1;
  82     }
  83     /*check if there are input events*/
  84         if(!GetNumberOfConsoleInputEvents(in,&retval))
  85         {
  86                 printf("getch2: can't get number of input events: %i\n",(int)GetLastError());
  87                 return -1;
  88         }
  89     if(retval<=0)return -1;
  90
  91         /*read all events*/
  92         if(!ReadConsoleInput(in,eventbuffer,128,&retval))
  93         {
  94                 printf("getch: can't read input events\n");
  95                 return -1;
  96         }
  97
  98         /*filter out keyevents*/
  99     for (i = 0; i < retval; i++)
 100     {
 101                 switch(eventbuffer[i].EventType)
 102                 {
 103                         case KEY_EVENT:
 104                                 /*only a pressed key is interresting for us*/
 105                                 if(eventbuffer[i].Event.KeyEvent.bKeyDown == TRUE)
 106                                 {
 107                                         /*check for special keys*/
 108                                         switch(eventbuffer[i].Event.KeyEvent.wVirtualKeyCode)
 109                                         {
 110                                         case VK_HOME:
 111                                                 return KEY_HOME;
 112                                         case VK_END:
 113                                                 return KEY_END;
 114                                         case VK_DELETE:
 115                                                 return KEY_DEL;
 116                     case VK_INSERT:
 117                                                 return KEY_INS;
 118                                         case VK_BACK:
 119                                                 return KEY_BS;
 120                                         case VK_PRIOR:
 121                                                 return KEY_PGUP;
 122                                         case VK_NEXT:
 123                                                 return KEY_PGDWN;
 124                                         case VK_RETURN:
 125                                                 return KEY_ENTER;
 126                                         case VK_ESCAPE:
 127                                                 return KEY_ESC;
 128                                         case VK_LEFT:
 129                                                 return KEY_LEFT;
 130                                         case VK_UP:
 131                                                 return KEY_UP;
 132                                         case VK_RIGHT:
 133                                                 return KEY_RIGHT;
 134                                         case VK_DOWN:
 135                                                 return KEY_DOWN;
 136                     case VK_SHIFT:
 137                         continue;
 138                                         }
 139                                         /*check for function keys*/
 140                                 if(0x87 >= eventbuffer[i].Event.KeyEvent.wVirtualKeyCode && eventbuffer[i].Event.KeyEvent.wVirtualKeyCode >= 0x70)
 141                                                 return KEY_F + 1 + eventbuffer[i].Event.KeyEvent.wVirtualKeyCode - 0x70;
 142
 143                                         /*only characters should be remaining*/
 144                                         //printf("getch2: YOU PRESSED \"%c\" \n",eventbuffer[i].Event.KeyEvent.uChar.AsciiChar);
 145                                     return eventbuffer[i].Event.KeyEvent.uChar.AsciiChar;
 146                                 }
 147                                 break;
 148
 149                         case MOUSE_EVENT:
 150             case WINDOW_BUFFER_SIZE_EVENT:
 151             case FOCUS_EVENT:
 152             case MENU_EVENT:
 153             default:
 154                                 //printf("getch2: unsupported event type");
 155                             break;
 156         }
 157     }
 158         return -1;
 159 }
 160
 161 bool getch2(struct mp_fifo *fifo)
 162 {
 163     int r = getch2_internal();
 164     if (r >= 0)
 165         mplayer_put_key(fifo, r);
 166     return true;
 167 }
 168
 169 void getch2_enable(void)
 170 {
 171         DWORD retval;
 172     in = GetStdHandle(STD_INPUT_HANDLE);
 173         if(!GetNumberOfConsoleInputEvents(in,&retval))
 174         {
 175                 printf("getch2: %i can't get number of input events  [disabling console input]\n",(int)GetLastError());
 176                 getch2_status = 0;
 177         }
 178     else getch2_status=1;
 179 }
 180
 181 void getch2_disable(void)
 182 {
 183     if(!getch2_status) return; // already disabled / never enabled
 184     getch2_status=0;
 185 }
 186
 187 #ifdef CONFIG_ICONV
 188 static const struct {
 189     unsigned cp;
 190     char* alias;
 191 } cp_alias[] = {
 192     { 20127, "ASCII" },
 193     { 20866, "KOI8-R" },
 194     { 21866, "KOI8-RU" },
 195     { 28591, "ISO-8859-1" },
 196     { 28592, "ISO-8859-2" },
 197     { 28593, "ISO-8859-3" },
 198     { 28594, "ISO-8859-4" },
 199     { 28595, "ISO-8859-5" },
 200     { 28596, "ISO-8859-6" },
 201     { 28597, "ISO-8859-7" },
 202     { 28598, "ISO-8859-8" },
 203     { 28599, "ISO-8859-9" },
 204     { 28605, "ISO-8859-15" },
 205     { 65001, "UTF-8" },
 206     { 0, NULL }
 207 };
 208
 209 char* get_term_charset(void)
 210 {
 211     char codepage[10];
 212     unsigned i, cpno = GetConsoleOutputCP();
 213     if (!cpno)
 214         cpno = GetACP();
 215     if (!cpno)
 216         return NULL;
 217
 218     for (i = 0; cp_alias[i].cp; i++)
 219         if (cpno == cp_alias[i].cp)
 220             return strdup(cp_alias[i].alias);
 221
 222     snprintf(codepage, sizeof(codepage), "CP%u", cpno);
 223     return strdup(codepage);
 224 }
 225 #endif