| 1 | /* Input event support for Emacs on the Microsoft Windows API. |
| 2 | Copyright (C) 1992-1993, 1995, 2001-2013 Free Software Foundation, |
| 3 | Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs 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 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | GNU Emacs 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 |
| 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | /* |
| 21 | Drew Bliss 01-Oct-93 |
| 22 | Adapted from ntkbd.c by Tim Fleehart |
| 23 | */ |
| 24 | |
| 25 | |
| 26 | #include <config.h> |
| 27 | #include <stdio.h> |
| 28 | #include <windows.h> |
| 29 | |
| 30 | #ifndef MOUSE_MOVED |
| 31 | #define MOUSE_MOVED 1 |
| 32 | #endif |
| 33 | |
| 34 | #include "lisp.h" |
| 35 | #include "keyboard.h" |
| 36 | #include "frame.h" |
| 37 | #include "dispextern.h" |
| 38 | #include "window.h" |
| 39 | #include "blockinput.h" |
| 40 | #include "termhooks.h" |
| 41 | #include "termchar.h" |
| 42 | #include "w32heap.h" |
| 43 | #include "w32term.h" |
| 44 | #include "w32inevt.h" |
| 45 | |
| 46 | /* stdin, from w32console.c */ |
| 47 | extern HANDLE keyboard_handle; |
| 48 | |
| 49 | /* Info for last mouse motion */ |
| 50 | static COORD movement_pos; |
| 51 | static Time movement_time; |
| 52 | |
| 53 | /* from w32fns.c */ |
| 54 | extern unsigned int map_keypad_keys (unsigned int, unsigned int); |
| 55 | extern unsigned int w32_key_to_modifier (int key); |
| 56 | |
| 57 | /* Event queue */ |
| 58 | #define EVENT_QUEUE_SIZE 50 |
| 59 | static INPUT_RECORD event_queue[EVENT_QUEUE_SIZE]; |
| 60 | static INPUT_RECORD *queue_ptr = event_queue, *queue_end = event_queue; |
| 61 | |
| 62 | /* Temporarily store lead byte of DBCS input sequences. */ |
| 63 | static char dbcs_lead = 0; |
| 64 | |
| 65 | static inline BOOL |
| 66 | w32_read_console_input (HANDLE h, INPUT_RECORD *rec, DWORD recsize, |
| 67 | DWORD *waiting) |
| 68 | { |
| 69 | return (w32_console_unicode_input |
| 70 | ? ReadConsoleInputW (h, rec, recsize, waiting) |
| 71 | : ReadConsoleInputA (h, rec, recsize, waiting)); |
| 72 | } |
| 73 | |
| 74 | /* Set by w32_console_toggle_lock_key. */ |
| 75 | int faked_key; |
| 76 | |
| 77 | static int |
| 78 | fill_queue (BOOL block) |
| 79 | { |
| 80 | BOOL rc; |
| 81 | DWORD events_waiting; |
| 82 | |
| 83 | if (queue_ptr < queue_end) |
| 84 | return queue_end-queue_ptr; |
| 85 | |
| 86 | if (!block) |
| 87 | { |
| 88 | /* Check to see if there are some events to read before we try |
| 89 | because we can't block. */ |
| 90 | if (!GetNumberOfConsoleInputEvents (keyboard_handle, &events_waiting)) |
| 91 | return -1; |
| 92 | if (events_waiting == 0) |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | rc = w32_read_console_input (keyboard_handle, event_queue, EVENT_QUEUE_SIZE, |
| 97 | &events_waiting); |
| 98 | if (!rc) |
| 99 | return -1; |
| 100 | queue_ptr = event_queue; |
| 101 | queue_end = event_queue + events_waiting; |
| 102 | return (int) events_waiting; |
| 103 | } |
| 104 | |
| 105 | /* In a generic, multi-frame world this should take a console handle |
| 106 | and return the frame for it |
| 107 | |
| 108 | Right now, there's only one frame so return it. */ |
| 109 | static FRAME_PTR |
| 110 | get_frame (void) |
| 111 | { |
| 112 | return SELECTED_FRAME (); |
| 113 | } |
| 114 | |
| 115 | /* Translate console modifiers to emacs modifiers. |
| 116 | German keyboard support (Kai Morgan Zeise 2/18/95). */ |
| 117 | |
| 118 | |
| 119 | #if 0 |
| 120 | /* Return nonzero if the virtual key is a dead key. */ |
| 121 | static int |
| 122 | is_dead_key (int wparam) |
| 123 | { |
| 124 | unsigned int code = MapVirtualKey (wparam, 2); |
| 125 | |
| 126 | /* Windows 95 returns 0x8000, NT returns 0x80000000. */ |
| 127 | return (code & 0x80008000) ? 1 : 0; |
| 128 | } |
| 129 | #endif |
| 130 | |
| 131 | /* The return code indicates key code size. cpID is the codepage to |
| 132 | use for translation to Unicode; -1 means use the current console |
| 133 | input codepage. */ |
| 134 | |
| 135 | |
| 136 | /* return code -1 means that event_queue_ptr won't be incremented. |
| 137 | In other word, this event makes two key codes. (by himi) */ |
| 138 | static int |
| 139 | key_event (KEY_EVENT_RECORD *event, struct input_event *emacs_ev, int *isdead) |
| 140 | { |
| 141 | static int mod_key_state = 0; |
| 142 | int wParam; |
| 143 | |
| 144 | *isdead = 0; |
| 145 | |
| 146 | /* Skip key-up events. */ |
| 147 | if (!event->bKeyDown) |
| 148 | { |
| 149 | switch (event->wVirtualKeyCode) |
| 150 | { |
| 151 | case VK_LWIN: |
| 152 | mod_key_state &= ~LEFT_WIN_PRESSED; |
| 153 | break; |
| 154 | case VK_RWIN: |
| 155 | mod_key_state &= ~RIGHT_WIN_PRESSED; |
| 156 | break; |
| 157 | case VK_APPS: |
| 158 | mod_key_state &= ~APPS_PRESSED; |
| 159 | break; |
| 160 | } |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | /* Ignore keystrokes we fake ourself; see below. */ |
| 165 | if (faked_key == event->wVirtualKeyCode) |
| 166 | { |
| 167 | faked_key = 0; |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | /* To make it easier to debug this code, ignore modifier keys! */ |
| 172 | switch (event->wVirtualKeyCode) |
| 173 | { |
| 174 | case VK_LWIN: |
| 175 | if (NILP (Vw32_pass_lwindow_to_system)) |
| 176 | { |
| 177 | /* Prevent system from acting on keyup (which opens the Start |
| 178 | menu if no other key was pressed) by simulating a press of |
| 179 | Space which we will ignore. */ |
| 180 | if ((mod_key_state & LEFT_WIN_PRESSED) == 0) |
| 181 | { |
| 182 | if (NUMBERP (Vw32_phantom_key_code)) |
| 183 | faked_key = XUINT (Vw32_phantom_key_code) & 255; |
| 184 | else |
| 185 | faked_key = VK_SPACE; |
| 186 | keybd_event (faked_key, (BYTE) MapVirtualKey (faked_key, 0), 0, 0); |
| 187 | } |
| 188 | } |
| 189 | mod_key_state |= LEFT_WIN_PRESSED; |
| 190 | if (!NILP (Vw32_lwindow_modifier)) |
| 191 | return 0; |
| 192 | break; |
| 193 | case VK_RWIN: |
| 194 | if (NILP (Vw32_pass_rwindow_to_system)) |
| 195 | { |
| 196 | if ((mod_key_state & RIGHT_WIN_PRESSED) == 0) |
| 197 | { |
| 198 | if (NUMBERP (Vw32_phantom_key_code)) |
| 199 | faked_key = XUINT (Vw32_phantom_key_code) & 255; |
| 200 | else |
| 201 | faked_key = VK_SPACE; |
| 202 | keybd_event (faked_key, (BYTE) MapVirtualKey (faked_key, 0), 0, 0); |
| 203 | } |
| 204 | } |
| 205 | mod_key_state |= RIGHT_WIN_PRESSED; |
| 206 | if (!NILP (Vw32_rwindow_modifier)) |
| 207 | return 0; |
| 208 | break; |
| 209 | case VK_APPS: |
| 210 | mod_key_state |= APPS_PRESSED; |
| 211 | if (!NILP (Vw32_apps_modifier)) |
| 212 | return 0; |
| 213 | break; |
| 214 | case VK_CAPITAL: |
| 215 | /* Decide whether to treat as modifier or function key. */ |
| 216 | if (NILP (Vw32_enable_caps_lock)) |
| 217 | goto disable_lock_key; |
| 218 | return 0; |
| 219 | case VK_NUMLOCK: |
| 220 | /* Decide whether to treat as modifier or function key. */ |
| 221 | if (NILP (Vw32_enable_num_lock)) |
| 222 | goto disable_lock_key; |
| 223 | return 0; |
| 224 | case VK_SCROLL: |
| 225 | /* Decide whether to treat as modifier or function key. */ |
| 226 | if (NILP (Vw32_scroll_lock_modifier)) |
| 227 | goto disable_lock_key; |
| 228 | return 0; |
| 229 | disable_lock_key: |
| 230 | /* Ensure the appropriate lock key state is off (and the |
| 231 | indicator light as well). */ |
| 232 | wParam = event->wVirtualKeyCode; |
| 233 | if (GetAsyncKeyState (wParam) & 0x8000) |
| 234 | { |
| 235 | /* Fake another press of the relevant key. Apparently, this |
| 236 | really is the only way to turn off the indicator. */ |
| 237 | faked_key = wParam; |
| 238 | keybd_event ((BYTE) wParam, (BYTE) MapVirtualKey (wParam, 0), |
| 239 | KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0); |
| 240 | keybd_event ((BYTE) wParam, (BYTE) MapVirtualKey (wParam, 0), |
| 241 | KEYEVENTF_EXTENDEDKEY | 0, 0); |
| 242 | keybd_event ((BYTE) wParam, (BYTE) MapVirtualKey (wParam, 0), |
| 243 | KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0); |
| 244 | } |
| 245 | break; |
| 246 | case VK_MENU: |
| 247 | case VK_CONTROL: |
| 248 | case VK_SHIFT: |
| 249 | return 0; |
| 250 | case VK_CANCEL: |
| 251 | /* Windows maps Ctrl-Pause (aka Ctrl-Break) into VK_CANCEL, |
| 252 | which is confusing for purposes of key binding; convert |
| 253 | VK_CANCEL events into VK_PAUSE events. */ |
| 254 | event->wVirtualKeyCode = VK_PAUSE; |
| 255 | break; |
| 256 | case VK_PAUSE: |
| 257 | /* Windows maps Ctrl-NumLock into VK_PAUSE, which is confusing |
| 258 | for purposes of key binding; convert these back into |
| 259 | VK_NUMLOCK events, at least when we want to see NumLock key |
| 260 | presses. (Note that there is never any possibility that |
| 261 | VK_PAUSE with Ctrl really is C-Pause as per above.) */ |
| 262 | if (NILP (Vw32_enable_num_lock) |
| 263 | && (event->dwControlKeyState |
| 264 | & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) != 0) |
| 265 | event->wVirtualKeyCode = VK_NUMLOCK; |
| 266 | break; |
| 267 | } |
| 268 | |
| 269 | /* Recognize state of Windows and Apps keys. */ |
| 270 | event->dwControlKeyState |= mod_key_state; |
| 271 | |
| 272 | /* Distinguish numeric keypad keys from extended keys. */ |
| 273 | event->wVirtualKeyCode = |
| 274 | map_keypad_keys (event->wVirtualKeyCode, |
| 275 | (event->dwControlKeyState & ENHANCED_KEY)); |
| 276 | |
| 277 | if (lispy_function_keys[event->wVirtualKeyCode] == 0) |
| 278 | { |
| 279 | if (!NILP (Vw32_recognize_altgr) |
| 280 | && (event->dwControlKeyState & LEFT_CTRL_PRESSED) |
| 281 | && (event->dwControlKeyState & RIGHT_ALT_PRESSED)) |
| 282 | { |
| 283 | /* Don't try to interpret AltGr key chords; ToAscii seems not |
| 284 | to process them correctly. */ |
| 285 | } |
| 286 | /* Handle key chords including any modifiers other than shift |
| 287 | directly, in order to preserve as much modifier information as |
| 288 | possible. */ |
| 289 | else if (event->dwControlKeyState |
| 290 | & ( RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED |
| 291 | | RIGHT_ALT_PRESSED | LEFT_ALT_PRESSED |
| 292 | | (!NILP (Vw32_lwindow_modifier) ? LEFT_WIN_PRESSED : 0) |
| 293 | | (!NILP (Vw32_rwindow_modifier) ? RIGHT_WIN_PRESSED : 0) |
| 294 | | (!NILP (Vw32_apps_modifier) ? APPS_PRESSED : 0) |
| 295 | | (!NILP (Vw32_scroll_lock_modifier) ? SCROLLLOCK_ON : 0))) |
| 296 | { |
| 297 | /* Don't translate modified alphabetic keystrokes, so the user |
| 298 | doesn't need to constantly switch layout to type control or |
| 299 | meta keystrokes when the normal layout translates |
| 300 | alphabetic characters to non-ascii characters. */ |
| 301 | if ('A' <= event->wVirtualKeyCode && event->wVirtualKeyCode <= 'Z') |
| 302 | { |
| 303 | event->uChar.AsciiChar = event->wVirtualKeyCode; |
| 304 | if ((event->dwControlKeyState & SHIFT_PRESSED) == 0) |
| 305 | event->uChar.AsciiChar += ('a' - 'A'); |
| 306 | } |
| 307 | /* Try to handle unrecognized keystrokes by determining the |
| 308 | base character (ie. translating the base key plus shift |
| 309 | modifier). */ |
| 310 | else if (event->uChar.AsciiChar == 0) |
| 311 | w32_kbd_patch_key (event, -1); |
| 312 | } |
| 313 | |
| 314 | if (event->uChar.AsciiChar == 0) |
| 315 | { |
| 316 | emacs_ev->kind = NO_EVENT; |
| 317 | return 0; |
| 318 | } |
| 319 | else if (event->uChar.AsciiChar > 0) |
| 320 | { |
| 321 | /* Pure ASCII characters < 128. */ |
| 322 | emacs_ev->kind = ASCII_KEYSTROKE_EVENT; |
| 323 | emacs_ev->code = event->uChar.AsciiChar; |
| 324 | } |
| 325 | else if (event->uChar.UnicodeChar > 0 |
| 326 | && w32_console_unicode_input) |
| 327 | { |
| 328 | /* Unicode codepoint; only valid if we are using Unicode |
| 329 | console input mode. */ |
| 330 | emacs_ev->kind = MULTIBYTE_CHAR_KEYSTROKE_EVENT; |
| 331 | emacs_ev->code = event->uChar.UnicodeChar; |
| 332 | } |
| 333 | else |
| 334 | { |
| 335 | /* Fallback handling of non-ASCII characters for non-Unicode |
| 336 | versions of Windows, and for non-Unicode input on NT |
| 337 | family of Windows. Only characters in the current |
| 338 | console codepage are supported by this fallback. */ |
| 339 | wchar_t code; |
| 340 | char dbcs[2]; |
| 341 | int cpId; |
| 342 | |
| 343 | /* Get the current console input codepage to interpret this |
| 344 | key with. Note that the system defaults for the OEM |
| 345 | codepage could have been changed by calling SetConsoleCP |
| 346 | or w32-set-console-codepage, so using GetLocaleInfo to |
| 347 | get LOCALE_IDEFAULTCODEPAGE is not TRT here. */ |
| 348 | cpId = GetConsoleCP (); |
| 349 | |
| 350 | dbcs[0] = dbcs_lead; |
| 351 | dbcs[1] = event->uChar.AsciiChar; |
| 352 | if (dbcs_lead) |
| 353 | { |
| 354 | dbcs_lead = 0; |
| 355 | if (!MultiByteToWideChar (cpId, 0, dbcs, 2, &code, 1)) |
| 356 | { |
| 357 | /* Garbage */ |
| 358 | DebPrint (("Invalid DBCS sequence: %d %d\n", |
| 359 | dbcs[0], dbcs[1])); |
| 360 | emacs_ev->kind = NO_EVENT; |
| 361 | } |
| 362 | } |
| 363 | else if (IsDBCSLeadByteEx (cpId, dbcs[1])) |
| 364 | { |
| 365 | dbcs_lead = dbcs[1]; |
| 366 | emacs_ev->kind = NO_EVENT; |
| 367 | } |
| 368 | else |
| 369 | { |
| 370 | if (!MultiByteToWideChar (cpId, 0, &dbcs[1], 1, &code, 1)) |
| 371 | { |
| 372 | /* Garbage */ |
| 373 | DebPrint (("Invalid character: %d\n", dbcs[1])); |
| 374 | emacs_ev->kind = NO_EVENT; |
| 375 | } |
| 376 | } |
| 377 | emacs_ev->kind = MULTIBYTE_CHAR_KEYSTROKE_EVENT; |
| 378 | emacs_ev->code = code; |
| 379 | } |
| 380 | } |
| 381 | else |
| 382 | { |
| 383 | /* Function keys and other non-character keys. */ |
| 384 | emacs_ev->kind = NON_ASCII_KEYSTROKE_EVENT; |
| 385 | emacs_ev->code = event->wVirtualKeyCode; |
| 386 | } |
| 387 | |
| 388 | XSETFRAME (emacs_ev->frame_or_window, get_frame ()); |
| 389 | emacs_ev->modifiers = w32_kbd_mods_to_emacs (event->dwControlKeyState, |
| 390 | event->wVirtualKeyCode); |
| 391 | emacs_ev->timestamp = GetTickCount (); |
| 392 | return 1; |
| 393 | } |
| 394 | |
| 395 | /* Mouse position hook. */ |
| 396 | void |
| 397 | w32_console_mouse_position (FRAME_PTR *f, |
| 398 | int insist, |
| 399 | Lisp_Object *bar_window, |
| 400 | enum scroll_bar_part *part, |
| 401 | Lisp_Object *x, |
| 402 | Lisp_Object *y, |
| 403 | Time *time) |
| 404 | { |
| 405 | block_input (); |
| 406 | |
| 407 | insist = insist; |
| 408 | |
| 409 | *f = get_frame (); |
| 410 | *bar_window = Qnil; |
| 411 | *part = 0; |
| 412 | SELECTED_FRAME ()->mouse_moved = 0; |
| 413 | |
| 414 | XSETINT (*x, movement_pos.X); |
| 415 | XSETINT (*y, movement_pos.Y); |
| 416 | *time = movement_time; |
| 417 | |
| 418 | unblock_input (); |
| 419 | } |
| 420 | |
| 421 | /* Remember mouse motion and notify emacs. */ |
| 422 | static void |
| 423 | mouse_moved_to (int x, int y) |
| 424 | { |
| 425 | /* If we're in the same place, ignore it. */ |
| 426 | if (x != movement_pos.X || y != movement_pos.Y) |
| 427 | { |
| 428 | SELECTED_FRAME ()->mouse_moved = 1; |
| 429 | movement_pos.X = x; |
| 430 | movement_pos.Y = y; |
| 431 | movement_time = GetTickCount (); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | /* Consoles return button bits in a strange order: |
| 436 | least significant - Leftmost button |
| 437 | next - Rightmost button |
| 438 | next - Leftmost+1 |
| 439 | next - Leftmost+2... |
| 440 | |
| 441 | Assume emacs likes three button mice, so |
| 442 | Left == 0 |
| 443 | Middle == 1 |
| 444 | Right == 2 |
| 445 | Others increase from there. */ |
| 446 | |
| 447 | #define NUM_TRANSLATED_MOUSE_BUTTONS 3 |
| 448 | static int emacs_button_translation[NUM_TRANSLATED_MOUSE_BUTTONS] = |
| 449 | { |
| 450 | 0, 2, 1 |
| 451 | }; |
| 452 | |
| 453 | static int |
| 454 | do_mouse_event (MOUSE_EVENT_RECORD *event, |
| 455 | struct input_event *emacs_ev) |
| 456 | { |
| 457 | static DWORD button_state = 0; |
| 458 | static Lisp_Object last_mouse_window; |
| 459 | DWORD but_change, mask; |
| 460 | int i; |
| 461 | |
| 462 | if (event->dwEventFlags == MOUSE_MOVED) |
| 463 | { |
| 464 | FRAME_PTR f = SELECTED_FRAME (); |
| 465 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); |
| 466 | int mx = event->dwMousePosition.X, my = event->dwMousePosition.Y; |
| 467 | |
| 468 | mouse_moved_to (mx, my); |
| 469 | |
| 470 | if (f->mouse_moved) |
| 471 | { |
| 472 | if (hlinfo->mouse_face_hidden) |
| 473 | { |
| 474 | hlinfo->mouse_face_hidden = 0; |
| 475 | clear_mouse_face (hlinfo); |
| 476 | } |
| 477 | |
| 478 | /* Generate SELECT_WINDOW_EVENTs when needed. */ |
| 479 | if (!NILP (Vmouse_autoselect_window)) |
| 480 | { |
| 481 | Lisp_Object mouse_window = window_from_coordinates (f, mx, my, |
| 482 | 0, 0); |
| 483 | /* A window will be selected only when it is not |
| 484 | selected now, and the last mouse movement event was |
| 485 | not in it. A minibuffer window will be selected iff |
| 486 | it is active. */ |
| 487 | if (WINDOWP (mouse_window) |
| 488 | && !EQ (mouse_window, last_mouse_window) |
| 489 | && !EQ (mouse_window, selected_window)) |
| 490 | { |
| 491 | struct input_event event; |
| 492 | |
| 493 | EVENT_INIT (event); |
| 494 | event.kind = SELECT_WINDOW_EVENT; |
| 495 | event.frame_or_window = mouse_window; |
| 496 | event.arg = Qnil; |
| 497 | event.timestamp = movement_time; |
| 498 | kbd_buffer_store_event (&event); |
| 499 | } |
| 500 | last_mouse_window = mouse_window; |
| 501 | } |
| 502 | else |
| 503 | last_mouse_window = Qnil; |
| 504 | |
| 505 | previous_help_echo_string = help_echo_string; |
| 506 | help_echo_string = help_echo_object = help_echo_window = Qnil; |
| 507 | help_echo_pos = -1; |
| 508 | note_mouse_highlight (f, mx, my); |
| 509 | /* If the contents of the global variable help_echo has |
| 510 | changed (inside note_mouse_highlight), generate a HELP_EVENT. */ |
| 511 | if (!NILP (help_echo_string) || !NILP (previous_help_echo_string)) |
| 512 | gen_help_event (help_echo_string, selected_frame, help_echo_window, |
| 513 | help_echo_object, help_echo_pos); |
| 514 | } |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | /* It looks like the console code sends us a mouse event with |
| 519 | dwButtonState == 0 when a window is activated. Ignore this case. */ |
| 520 | if (event->dwButtonState == button_state) |
| 521 | return 0; |
| 522 | |
| 523 | emacs_ev->kind = MOUSE_CLICK_EVENT; |
| 524 | |
| 525 | /* Find out what button has changed state since the last button event. */ |
| 526 | but_change = button_state ^ event->dwButtonState; |
| 527 | mask = 1; |
| 528 | for (i = 0; mask; i++, mask <<= 1) |
| 529 | if (but_change & mask) |
| 530 | { |
| 531 | if (i < NUM_TRANSLATED_MOUSE_BUTTONS) |
| 532 | emacs_ev->code = emacs_button_translation[i]; |
| 533 | else |
| 534 | emacs_ev->code = i; |
| 535 | break; |
| 536 | } |
| 537 | |
| 538 | button_state = event->dwButtonState; |
| 539 | emacs_ev->timestamp = GetTickCount (); |
| 540 | emacs_ev->modifiers = w32_kbd_mods_to_emacs (event->dwControlKeyState, 0) | |
| 541 | ((event->dwButtonState & mask) ? down_modifier : up_modifier); |
| 542 | |
| 543 | XSETFASTINT (emacs_ev->x, event->dwMousePosition.X); |
| 544 | XSETFASTINT (emacs_ev->y, event->dwMousePosition.Y); |
| 545 | /* for Mule 2.2 (Based on Emacs 19.28 */ |
| 546 | #ifdef MULE |
| 547 | XSET (emacs_ev->frame_or_window, Lisp_Frame, get_frame ()); |
| 548 | #else |
| 549 | XSETFRAME (emacs_ev->frame_or_window, get_frame ()); |
| 550 | #endif |
| 551 | |
| 552 | return 1; |
| 553 | } |
| 554 | |
| 555 | static void |
| 556 | resize_event (WINDOW_BUFFER_SIZE_RECORD *event) |
| 557 | { |
| 558 | FRAME_PTR f = get_frame (); |
| 559 | |
| 560 | change_frame_size (f, event->dwSize.Y, event->dwSize.X, 0, 1, 0); |
| 561 | SET_FRAME_GARBAGED (f); |
| 562 | } |
| 563 | |
| 564 | static void |
| 565 | maybe_generate_resize_event (void) |
| 566 | { |
| 567 | CONSOLE_SCREEN_BUFFER_INFO info; |
| 568 | FRAME_PTR f = get_frame (); |
| 569 | |
| 570 | GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info); |
| 571 | |
| 572 | /* It is okay to call this unconditionally, since it will do nothing |
| 573 | if the size hasn't actually changed. */ |
| 574 | change_frame_size (f, |
| 575 | 1 + info.srWindow.Bottom - info.srWindow.Top, |
| 576 | 1 + info.srWindow.Right - info.srWindow.Left, |
| 577 | 0, 0, 0); |
| 578 | } |
| 579 | |
| 580 | static int |
| 581 | handle_file_notifications (struct input_event *hold_quit) |
| 582 | { |
| 583 | BYTE *p = file_notifications; |
| 584 | FILE_NOTIFY_INFORMATION *fni = (PFILE_NOTIFY_INFORMATION)p; |
| 585 | const DWORD min_size |
| 586 | = offsetof (FILE_NOTIFY_INFORMATION, FileName) + sizeof(wchar_t); |
| 587 | struct input_event inev; |
| 588 | int nevents = 0; |
| 589 | |
| 590 | /* We cannot process notification before Emacs is fully initialized, |
| 591 | since we need the UTF-16LE coding-system to be set up. */ |
| 592 | if (!initialized) |
| 593 | { |
| 594 | notification_buffer_in_use = 0; |
| 595 | return nevents; |
| 596 | } |
| 597 | |
| 598 | enter_crit (); |
| 599 | if (notification_buffer_in_use) |
| 600 | { |
| 601 | DWORD info_size = notifications_size; |
| 602 | Lisp_Object cs = intern ("utf-16le"); |
| 603 | Lisp_Object obj = w32_get_watch_object (notifications_desc); |
| 604 | |
| 605 | /* notifications_size could be zero when the buffer of |
| 606 | notifications overflowed on the OS level, or when the |
| 607 | directory being watched was itself deleted. Do nothing in |
| 608 | that case. */ |
| 609 | if (info_size |
| 610 | && !NILP (obj) && CONSP (obj)) |
| 611 | { |
| 612 | Lisp_Object callback = XCDR (obj); |
| 613 | |
| 614 | EVENT_INIT (inev); |
| 615 | |
| 616 | while (info_size >= min_size) |
| 617 | { |
| 618 | Lisp_Object utf_16_fn |
| 619 | = make_unibyte_string ((char *)fni->FileName, |
| 620 | fni->FileNameLength); |
| 621 | /* Note: mule-conf is preloaded, so utf-16le must |
| 622 | already be defined at this point. */ |
| 623 | Lisp_Object fname |
| 624 | = code_convert_string_norecord (utf_16_fn, cs, 0); |
| 625 | Lisp_Object action = lispy_file_action (fni->Action); |
| 626 | |
| 627 | inev.kind = FILE_NOTIFY_EVENT; |
| 628 | inev.code = (ptrdiff_t)XINT (XIL ((EMACS_INT)notifications_desc)); |
| 629 | inev.timestamp = GetTickCount (); |
| 630 | inev.modifiers = 0; |
| 631 | inev.frame_or_window = callback; |
| 632 | inev.arg = Fcons (action, fname); |
| 633 | kbd_buffer_store_event_hold (&inev, hold_quit); |
| 634 | |
| 635 | if (!fni->NextEntryOffset) |
| 636 | break; |
| 637 | p += fni->NextEntryOffset; |
| 638 | fni = (PFILE_NOTIFY_INFORMATION)p; |
| 639 | info_size -= fni->NextEntryOffset; |
| 640 | } |
| 641 | } |
| 642 | notification_buffer_in_use = 0; |
| 643 | } |
| 644 | leave_crit (); |
| 645 | return nevents; |
| 646 | } |
| 647 | |
| 648 | /* Here's an overview of how Emacs input works in non-GUI sessions on |
| 649 | MS-Windows. (For description of the GUI input, see the commentary |
| 650 | before w32_msg_pump in w32fns.c.) |
| 651 | |
| 652 | When Emacs is idle, it loops inside wait_reading_process_output, |
| 653 | calling pselect periodically to check whether any input is |
| 654 | available. On Windows, pselect is redirected to sys_select, which |
| 655 | uses MsgWaitForMultipleObjects to wait for input, either from the |
| 656 | keyboard or from any of the Emacs subprocesses. In addition, |
| 657 | MsgWaitForMultipleObjects wakes up when some Windows message is |
| 658 | posted to the input queue of the Emacs's main thread (which is the |
| 659 | thread in which sys_select runs). |
| 660 | |
| 661 | When the Emacs's console window has focus, Windows sends input |
| 662 | events that originate from the keyboard or the mouse; these events |
| 663 | wake up MsgWaitForMultipleObjects, which reports that input is |
| 664 | available. Emacs then calls w32_console_read_socket, below, to |
| 665 | read the input. w32_console_read_socket uses |
| 666 | GetNumberOfConsoleInputEvents and ReadConsoleInput to peek at and |
| 667 | read the console input events. |
| 668 | |
| 669 | One type of non-keyboard input event that gets reported as input |
| 670 | available is due to the Emacs's console window receiving focus. |
| 671 | When that happens, Emacs gets the FOCUS_EVENT event and sys_select |
| 672 | reports some input; however, w32_console_read_socket ignores such |
| 673 | events when called to read them. |
| 674 | |
| 675 | Note that any other Windows message sent to the main thread will |
| 676 | also wake up MsgWaitForMultipleObjects. These messages get |
| 677 | immediately dispatched to their destinations by calling |
| 678 | drain_message_queue. */ |
| 679 | |
| 680 | int |
| 681 | w32_console_read_socket (struct terminal *terminal, |
| 682 | struct input_event *hold_quit) |
| 683 | { |
| 684 | int nev, add; |
| 685 | int isdead; |
| 686 | |
| 687 | block_input (); |
| 688 | |
| 689 | for (;;) |
| 690 | { |
| 691 | int nfnotify = handle_file_notifications (hold_quit); |
| 692 | |
| 693 | nev = fill_queue (0); |
| 694 | if (nev <= 0) |
| 695 | { |
| 696 | /* If nev == -1, there was some kind of error |
| 697 | If nev == 0 then no events were available |
| 698 | so return. */ |
| 699 | if (nfnotify) |
| 700 | nev = 0; |
| 701 | break; |
| 702 | } |
| 703 | |
| 704 | while (nev > 0) |
| 705 | { |
| 706 | struct input_event inev; |
| 707 | |
| 708 | EVENT_INIT (inev); |
| 709 | inev.kind = NO_EVENT; |
| 710 | inev.arg = Qnil; |
| 711 | |
| 712 | switch (queue_ptr->EventType) |
| 713 | { |
| 714 | case KEY_EVENT: |
| 715 | add = key_event (&queue_ptr->Event.KeyEvent, &inev, &isdead); |
| 716 | if (add == -1) /* 95.7.25 by himi */ |
| 717 | { |
| 718 | queue_ptr--; |
| 719 | add = 1; |
| 720 | } |
| 721 | if (add) |
| 722 | kbd_buffer_store_event_hold (&inev, hold_quit); |
| 723 | break; |
| 724 | |
| 725 | case MOUSE_EVENT: |
| 726 | add = do_mouse_event (&queue_ptr->Event.MouseEvent, &inev); |
| 727 | if (add) |
| 728 | kbd_buffer_store_event_hold (&inev, hold_quit); |
| 729 | break; |
| 730 | |
| 731 | case WINDOW_BUFFER_SIZE_EVENT: |
| 732 | if (w32_use_full_screen_buffer) |
| 733 | resize_event (&queue_ptr->Event.WindowBufferSizeEvent); |
| 734 | break; |
| 735 | |
| 736 | case MENU_EVENT: |
| 737 | case FOCUS_EVENT: |
| 738 | /* Internal event types, ignored. */ |
| 739 | break; |
| 740 | } |
| 741 | |
| 742 | queue_ptr++; |
| 743 | nev--; |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | /* We don't get told about changes in the window size (only the buffer |
| 748 | size, which we no longer care about), so we have to check it |
| 749 | periodically. */ |
| 750 | if (!w32_use_full_screen_buffer) |
| 751 | maybe_generate_resize_event (); |
| 752 | |
| 753 | unblock_input (); |
| 754 | return nev; |
| 755 | } |