pc/key_nt.c

   1 /* Keyboard support routines.
   2         for Windows NT system.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18   Bugs:
  19     Have trouble with non-US keyboards, "Alt-gr"+keys (API tells CTRL-ALT is pressed)
  20    */
  21 #include <config.h>
  22 #ifndef _OS_NT
  23  #error "This file is for Win32 systems only"
  24 #else
  25
  26 #include <windows.h>
  27 #include <stdio.h>
  28 #include "../src/mouse.h"
  29 #include "../src/global.h"
  30 #include "../src/main.h"
  31 #include "../src/key.h"
  32 #include "../vfs/vfs.h"
  33 #include "../src/tty.h"
  34 #include "trace_nt.h"
  35
  36 /*  Global variables */
  37 int old_esc_mode = 0;
  38 HANDLE hConsoleInput;
  39 DWORD  dwSaved_ControlState;
  40 Gpm_Event evSaved_Event;
  41
  42 /* Unused variables */
  43 int double_click_speed;         /* they are here to keep linker happy */
  44 int mou_auto_repeat;
  45 int use_8th_bit_as_meta = 0;
  46
  47 /* Static Tables */
  48 struct {
  49     int key_code;
  50     int vkcode;
  51 } fkt_table [] = {
  52     { KEY_F(1),  VK_F1 },
  53     { KEY_F(2),  VK_F2 },
  54     { KEY_F(3),  VK_F3 },
  55     { KEY_F(4),  VK_F4 },
  56     { KEY_F(5),  VK_F5 },
  57     { KEY_F(6),  VK_F6 },
  58     { KEY_F(7),  VK_F7 },
  59     { KEY_F(8),  VK_F8 },
  60     { KEY_F(9),  VK_F9 },
  61     { KEY_F(10), VK_F10 },
  62     { KEY_F(11), VK_F11 },
  63     { KEY_F(12), VK_F12 },
  64     { KEY_F(13), VK_F13 },
  65     { KEY_F(14), VK_F14 },
  66     { KEY_F(15), VK_F15 },
  67     { KEY_F(16), VK_F16 },
  68     { KEY_F(17), VK_F17 },
  69     { KEY_F(18), VK_F18 },
  70     { KEY_F(19), VK_F19 },
  71     { KEY_F(20), VK_F20 },
  72     { KEY_IC,    VK_INSERT },
  73     { KEY_DC,    VK_DELETE },
  74     { KEY_BACKSPACE, VK_BACK },
  75
  76     { KEY_PPAGE, VK_PRIOR },
  77     { KEY_NPAGE, VK_NEXT },
  78     { KEY_LEFT,  VK_LEFT },
  79     { KEY_RIGHT, VK_RIGHT },
  80     { KEY_UP,    VK_UP },
  81     { KEY_DOWN,  VK_DOWN },
  82     { KEY_HOME,  VK_HOME },
  83     { KEY_END,   VK_END },
  84
  85     { ALT('*'),  VK_MULTIPLY },
  86     { ALT('+'),  VK_ADD },
  87     { ALT('-'),  VK_SUBTRACT },
  88     { ALT('\t'), VK_PAUSE }, /* Added to make Complete work press Pause */
  89
  90     { ESC_CHAR, VK_ESCAPE },
  91
  92     { 0, 0}
  93 };
  94
  95 /*  init_key  - Called in main.c to initialize ourselves
  96                 Get handle to console input
  97 */
  98 void init_key (void)
  99 {
 100     win32APICALL_HANDLE (hConsoleInput, GetStdHandle (STD_INPUT_HANDLE));
 101 }
 102
 103 int ctrl_pressed ()
 104 {
 105     if(dwSaved_ControlState & RIGHT_ALT_PRESSED) return 0;
 106     /* The line above fixes the BUG with the AltGr Keys*/
 107     return dwSaved_ControlState & (RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED);
 108 }
 109
 110 int shift_pressed ()
 111 {
 112     return dwSaved_ControlState & SHIFT_PRESSED;
 113 }
 114
 115 int alt_pressed ()
 116 {
 117     return dwSaved_ControlState & (/* RIGHT_ALT_PRESSED  |*/ LEFT_ALT_PRESSED  );
 118 }
 119
 120 static int VKtoCurses (int a_vkc)
 121 {
 122     int i;
 123
 124     for (i = 0; fkt_table[i].vkcode != 0; i++)
 125         if (a_vkc == fkt_table[i].vkcode) {
 126             return fkt_table[i].key_code;
 127         }
 128     return 0;
 129 }
 130
 131 static int translate_key_code(int asc, int scan)
 132 {
 133     int c;
 134     switch(scan){
 135     case 106: /* KP_MULT*/
 136         return ALT('*');
 137     case 107: /* KP_PLUS*/
 138         return ALT('+');
 139     case 109: /* KP_MINUS*/
 140         return ALT('-');
 141     }
 142     c = VKtoCurses (scan);
 143     if (!asc && !c)
 144         return 0;
 145     if (asc && c)
 146         return c;
 147     if (!asc || asc=='\t' )
 148     {
 149         if (shift_pressed() && (c >= KEY_F(1)) && (c <= KEY_F(10)))
 150             c += 10;
 151         if (alt_pressed() && (c >= KEY_F(1)) && (c <= KEY_F(2)))
 152             c += 10;
 153         if (alt_pressed() && (c == KEY_F(7)))
 154             c = ALT('?');
 155         if (asc == '\t'){
 156                 if(ctrl_pressed())c = ALT('\t');
 157                 else c=asc;
 158         }
 159         return c;
 160     }
 161     if (ctrl_pressed())
 162         return XCTRL(asc);
 163     if (alt_pressed())
 164         return ALT(asc);
 165     if (asc == 13)
 166         return 10;
 167     return asc;
 168 }
 169
 170 int get_key_code (int no_delay)
 171 {
 172     INPUT_RECORD ir;                            /* Input record */
 173     DWORD                dw;                            /* number of records actually read */
 174     int                  ch, vkcode, j;
 175
 176     if (no_delay) {
 177         /* Check if any input pending, otherwise return */
 178         nodelay (stdscr, TRUE);
 179         win32APICALL(PeekConsoleInput(hConsoleInput, &ir, 1, &dw));
 180         if (!dw)
 181             return 0;
 182     }
 183
 184     do {
 185         win32APICALL(ReadConsoleInput(hConsoleInput, &ir, 1, &dw));
 186         switch (ir.EventType) {
 187             case KEY_EVENT:
 188                 if (!ir.Event.KeyEvent.bKeyDown)                /* Process key just once: when pressed */
 189                     break;
 190
 191                 vkcode = ir.Event.KeyEvent.wVirtualKeyCode;
 192 //#ifndef __MINGW32__
 193                 ch = ir.Event.KeyEvent.uChar.AsciiChar;
 194 //#else
 195 //              ch = ir.Event.KeyEvent.AsciiChar;
 196 //#endif
 197                 dwSaved_ControlState = ir.Event.KeyEvent.dwControlKeyState;
 198                 j = translate_key_code (ch, vkcode);
 199                 if (j)
 200                     return j;
 201                 break;
 202
 203         case MOUSE_EVENT:
 204                 /* Save event as a GPM-like event */
 205                 evSaved_Event.x = ir.Event.MouseEvent.dwMousePosition.X;
 206                 evSaved_Event.y = ir.Event.MouseEvent.dwMousePosition.Y+1;
 207                 evSaved_Event.buttons = ir.Event.MouseEvent.dwButtonState;
 208                 switch (ir.Event.MouseEvent.dwEventFlags) {
 209                     case 0:
 210                         evSaved_Event.type = GPM_DOWN | GPM_SINGLE;
 211                         break;
 212                     case MOUSE_MOVED:
 213                         evSaved_Event.type = GPM_MOVE;
 214                         break;
 215                     case DOUBLE_CLICK:
 216                         evSaved_Event.type = GPM_DOWN | GPM_DOUBLE;
 217                         break;
 218                 };
 219                 return 0;
 220         }
 221     } while (!no_delay);
 222     return 0;
 223 }
 224
 225 static int getch_with_delay (void)
 226 {
 227     int c;
 228
 229     while (1) {
 230         /* Try to get a character */
 231         c = get_key_code (0);
 232         if (c != ERR)
 233             break;
 234     }
 235     /* Success -> return the character */
 236     return c;
 237 }
 238
 239 /* Returns a character read from stdin with appropriate interpretation */
 240 int get_event (Gpm_Event *event, int redo_event, int block)
 241 {
 242     int c;
 243     static int flag;                    /* Return value from select */
 244     static int dirty = 3;
 245
 246     if ((dirty == 1) || is_idle ()){
 247         refresh ();
 248         doupdate ();
 249         dirty = 1;
 250     } else
 251         dirty++;
 252
 253     vfs_timeout_handler ();
 254
 255     c = block ? getch_with_delay () : get_key_code (1);
 256
 257     if (!c) {
 258         /* Code is 0, so this is a Control key or mouse event */
 259         return EV_NONE; /* FIXME: mouse not supported */
 260     }
 261
 262     return c;
 263 }
 264
 265 /* Returns a key press, mouse events are discarded */
 266 int mi_getch ()
 267 {
 268     Gpm_Event ev;
 269     int       key;
 270
 271     while ((key = get_event (&ev, 0, 1)) == 0)
 272         ;
 273     return key;
 274 }
 275
 276 /*
 277    is_idle -    A function to check if we're idle.
 278                 It checks for any waiting event  (that can be a Key, Mouse event,
 279                 and other internal events like focus or menu)
 280 */
 281 int is_idle (void)
 282 {
 283     DWORD dw;
 284     if (GetNumberOfConsoleInputEvents (hConsoleInput, &dw))
 285         if (dw > 15)
 286             return 0;
 287     return 1;
 288 }
 289
 290 /* get_modifier  */
 291 int get_modifier()
 292 {
 293     int  retval = 0;
 294
 295     if (dwSaved_ControlState & LEFT_ALT_PRESSED)        /* code is not clean, because we return Linux-like bitcodes*/
 296         retval |= ALTL_PRESSED;
 297     if (dwSaved_ControlState & RIGHT_ALT_PRESSED)
 298         retval |= ALTR_PRESSED;
 299
 300     if (dwSaved_ControlState & RIGHT_CTRL_PRESSED ||
 301         dwSaved_ControlState & LEFT_CTRL_PRESSED)
 302         retval |= CONTROL_PRESSED;
 303
 304     if (dwSaved_ControlState & SHIFT_PRESSED)
 305         retval |= SHIFT_PRESSED;
 306
 307     return retval;
 308 }
 309
 310 /* void functions for UNIX compatibility */
 311 void define_sequence (int code, char* vkcode, int action) {}
 312 void channels_up() {}
 313 void channels_down() {}
 314 void init_key_input_fd (void) {}
 315 void numeric_keypad_mode (void) {}
 316 void application_keypad_mode (void) {}
 317
 318 /* mouse is not yet supported, sorry */
 319 void init_mouse (void) {}
 320 void shut_mouse (void) {}
 321
 322 #endif /* _OS_NT */