Commit | Line | Data |
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6cdfb6e6 | 1 | /* Input event support for Windows NT port of GNU Emacs. |
b02466e8 | 2 | Copyright (C) 1992, 1993, 1995 Free Software Foundation, Inc. |
6cdfb6e6 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. | |
6cdfb6e6 RS |
20 | |
21 | Drew Bliss 01-Oct-93 | |
22 | Adapted from ntkbd.c by Tim Fleehart | |
23 | */ | |
24 | ||
25 | ||
26 | #include "config.h" | |
27 | ||
28 | #include <stdlib.h> | |
29 | #include <stdio.h> | |
30 | #include <windows.h> | |
31 | ||
32 | #include "lisp.h" | |
33 | #include "frame.h" | |
34 | #include "blockinput.h" | |
35 | #include "termhooks.h" | |
36 | ||
37 | /* stdin, from ntterm */ | |
38 | extern HANDLE keyboard_handle; | |
39 | ||
6cdfb6e6 RS |
40 | /* Info for last mouse motion */ |
41 | static COORD movement_pos; | |
42 | static DWORD movement_time; | |
43 | ||
44 | /* from keyboard.c */ | |
45 | extern void reinvoke_input_signal (void); | |
46 | ||
47 | /* from dispnew.c */ | |
48 | extern int change_frame_size (FRAME_PTR, int, int, int, int); | |
49 | ||
50 | /* Event queue */ | |
51 | #define EVENT_QUEUE_SIZE 50 | |
52 | static INPUT_RECORD event_queue[EVENT_QUEUE_SIZE]; | |
53 | static INPUT_RECORD *queue_ptr = event_queue, *queue_end = event_queue; | |
54 | ||
55 | static int | |
56 | fill_queue (BOOL block) | |
57 | { | |
58 | BOOL rc; | |
59 | DWORD events_waiting; | |
60 | ||
61 | if (queue_ptr < queue_end) | |
62 | return queue_end-queue_ptr; | |
63 | ||
64 | if (!block) | |
65 | { | |
66 | /* Check to see if there are some events to read before we try | |
67 | because we can't block. */ | |
68 | if (!GetNumberOfConsoleInputEvents (keyboard_handle, &events_waiting)) | |
69 | return -1; | |
70 | if (events_waiting == 0) | |
71 | return 0; | |
72 | } | |
73 | ||
74 | rc = ReadConsoleInput (keyboard_handle, event_queue, EVENT_QUEUE_SIZE, | |
75 | &events_waiting); | |
76 | if (!rc) | |
77 | return -1; | |
78 | queue_ptr = event_queue; | |
79 | queue_end = event_queue + events_waiting; | |
80 | return (int) events_waiting; | |
81 | } | |
82 | ||
83 | /* In a generic, multi-frame world this should take a console handle | |
84 | and return the frame for it | |
85 | ||
86 | Right now, there's only one frame so return it. */ | |
87 | static FRAME_PTR | |
88 | get_frame (void) | |
89 | { | |
90 | return selected_frame; | |
91 | } | |
92 | ||
b02466e8 KH |
93 | /* Translate console modifiers to emacs modifiers. |
94 | German keyboard support (Kai Morgan Zeise 2/18/95). */ | |
c0386d7e | 95 | int |
b02466e8 | 96 | win32_kbd_mods_to_emacs (DWORD mods) |
6cdfb6e6 | 97 | { |
b02466e8 KH |
98 | int retval = 0; |
99 | ||
100 | /* If AltGr has been pressed, remove it. */ | |
101 | if ((mods & (RIGHT_ALT_PRESSED | LEFT_CTRL_PRESSED)) | |
102 | == (RIGHT_ALT_PRESSED | LEFT_CTRL_PRESSED)) | |
103 | mods &= ~ (RIGHT_ALT_PRESSED | LEFT_CTRL_PRESSED); | |
104 | ||
105 | if (mods & (RIGHT_ALT_PRESSED | LEFT_ALT_PRESSED)) | |
106 | retval = meta_modifier; | |
107 | ||
108 | if (mods & (RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED)) | |
109 | { | |
110 | retval |= ctrl_modifier; | |
111 | if ((mods & (RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED)) | |
112 | == (RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED)) | |
113 | retval |= meta_modifier; | |
114 | } | |
115 | ||
116 | if (((mods & (SHIFT_PRESSED | CAPSLOCK_ON)) == SHIFT_PRESSED) | |
117 | || ((mods & (SHIFT_PRESSED | CAPSLOCK_ON)) == CAPSLOCK_ON)) | |
118 | retval |= shift_modifier; | |
119 | ||
120 | return retval; | |
121 | } | |
122 | ||
daf38066 | 123 | /* The return code indicates key code size. */ |
c0386d7e | 124 | int |
b02466e8 KH |
125 | win32_kbd_patch_key (KEY_EVENT_RECORD *event) |
126 | { | |
127 | unsigned int key_code = event->wVirtualKeyCode; | |
128 | unsigned int mods = event->dwControlKeyState; | |
daf38066 GV |
129 | BYTE keystate[256]; |
130 | static BYTE ansi_code[4]; | |
131 | static int isdead; | |
132 | ||
133 | if (isdead == 2) | |
134 | { | |
135 | event->uChar.AsciiChar = ansi_code[2]; | |
136 | isdead = 0; | |
137 | return 1; | |
b02466e8 | 138 | } |
daf38066 GV |
139 | if (event->uChar.AsciiChar != 0) |
140 | return 1; | |
c0386d7e | 141 | |
daf38066 GV |
142 | memset (keystate, 0, sizeof (keystate)); |
143 | if (mods & SHIFT_PRESSED) | |
144 | keystate[VK_SHIFT] = 0x80; | |
145 | if (mods & CAPSLOCK_ON) | |
146 | keystate[VK_CAPITAL] = 1; | |
c0386d7e GV |
147 | if ((mods & LEFT_CTRL_PRESSED) && (mods & RIGHT_ALT_PRESSED)) |
148 | { | |
149 | keystate[VK_CONTROL] = 0x80; | |
150 | keystate[VK_LCONTROL] = 0x80; | |
151 | keystate[VK_MENU] = 0x80; | |
152 | keystate[VK_RMENU] = 0x80; | |
153 | } | |
154 | ||
daf38066 GV |
155 | isdead = ToAscii (event->wVirtualKeyCode, event->wVirtualScanCode, |
156 | keystate, (LPWORD) ansi_code, 0); | |
157 | if (isdead == 0) | |
158 | return 0; | |
159 | event->uChar.AsciiChar = ansi_code[0]; | |
160 | return isdead; | |
6cdfb6e6 | 161 | } |
daf38066 | 162 | |
6cdfb6e6 RS |
163 | /* Map virtual key codes into: |
164 | -1 - Ignore this key | |
165 | -2 - ASCII char | |
166 | Other - Map non-ASCII keys into X keysyms so that they are looked up | |
167 | correctly in keyboard.c | |
168 | ||
169 | Return, escape and tab are mapped to ASCII rather than coming back | |
170 | as non-ASCII to be more compatible with old-style keyboard support. */ | |
171 | ||
172 | static int map_virt_key[256] = | |
173 | { | |
daf38066 GV |
174 | #ifdef MULE |
175 | -3, | |
176 | #else | |
6cdfb6e6 | 177 | -1, |
daf38066 | 178 | #endif |
6cdfb6e6 RS |
179 | -1, /* VK_LBUTTON */ |
180 | -1, /* VK_RBUTTON */ | |
181 | 0x69, /* VK_CANCEL */ | |
182 | -1, /* VK_MBUTTON */ | |
183 | -1, -1, -1, | |
184 | 8, /* VK_BACK */ | |
185 | -2, /* VK_TAB */ | |
186 | -1, -1, | |
187 | 11, /* VK_CLEAR */ | |
188 | -2, /* VK_RETURN */ | |
189 | -1, -1, | |
190 | -1, /* VK_SHIFT */ | |
191 | -1, /* VK_CONTROL */ | |
192 | -1, /* VK_MENU */ | |
193 | 0x13, /* VK_PAUSE */ | |
194 | -1, /* VK_CAPITAL */ | |
195 | -1, -1, -1, -1, -1, -1, | |
196 | -2, /* VK_ESCAPE */ | |
197 | -1, -1, -1, -1, | |
198 | -2, /* VK_SPACE */ | |
199 | 0x55, /* VK_PRIOR */ | |
200 | 0x56, /* VK_NEXT */ | |
201 | 0x57, /* VK_END */ | |
202 | 0x50, /* VK_HOME */ | |
203 | 0x51, /* VK_LEFT */ | |
204 | 0x52, /* VK_UP */ | |
205 | 0x53, /* VK_RIGHT */ | |
206 | 0x54, /* VK_DOWN */ | |
207 | 0x60, /* VK_SELECT */ | |
208 | 0x61, /* VK_PRINT */ | |
209 | 0x62, /* VK_EXECUTE */ | |
210 | -1, /* VK_SNAPSHOT */ | |
211 | 0x63, /* VK_INSERT */ | |
212 | 0xff, /* VK_DELETE */ | |
213 | 0x6a, /* VK_HELP */ | |
214 | -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, /* 0 - 9 */ | |
215 | -1, -1, -1, -1, -1, -1, -1, | |
216 | -2, -2, -2, -2, -2, -2, -2, -2, /* A - Z */ | |
217 | -2, -2, -2, -2, -2, -2, -2, -2, | |
218 | -2, -2, -2, -2, -2, -2, -2, -2, | |
219 | -2, -2, | |
220 | -1, -1, -1, -1, -1, | |
221 | 0xb0, /* VK_NUMPAD0 */ | |
222 | 0xb1, /* VK_NUMPAD1 */ | |
223 | 0xb2, /* VK_NUMPAD2 */ | |
224 | 0xb3, /* VK_NUMPAD3 */ | |
225 | 0xb4, /* VK_NUMPAD4 */ | |
226 | 0xb5, /* VK_NUMPAD5 */ | |
227 | 0xb6, /* VK_NUMPAD6 */ | |
228 | 0xb7, /* VK_NUMPAD7 */ | |
229 | 0xb8, /* VK_NUMPAD8 */ | |
230 | 0xb9, /* VK_NUMPAD9 */ | |
231 | 0xaa, /* VK_MULTIPLY */ | |
232 | 0xab, /* VK_ADD */ | |
233 | 0xac, /* VK_SEPARATOR */ | |
234 | 0xad, /* VK_SUBTRACT */ | |
235 | 0xae, /* VK_DECIMAL */ | |
236 | 0xaf, /* VK_DIVIDE */ | |
237 | 0xbe, /* VK_F1 */ | |
238 | 0xbf, /* VK_F2 */ | |
239 | 0xc0, /* VK_F3 */ | |
240 | 0xc1, /* VK_F4 */ | |
241 | 0xc2, /* VK_F5 */ | |
242 | 0xc3, /* VK_F6 */ | |
243 | 0xc4, /* VK_F7 */ | |
244 | 0xc5, /* VK_F8 */ | |
245 | 0xc6, /* VK_F9 */ | |
246 | 0xc7, /* VK_F10 */ | |
247 | 0xc8, /* VK_F11 */ | |
248 | 0xc9, /* VK_F12 */ | |
249 | 0xca, /* VK_F13 */ | |
250 | 0xcb, /* VK_F14 */ | |
251 | 0xcc, /* VK_F15 */ | |
252 | 0xcd, /* VK_F16 */ | |
253 | 0xce, /* VK_F17 */ | |
254 | 0xcf, /* VK_F18 */ | |
255 | 0xd0, /* VK_F19 */ | |
256 | 0xd1, /* VK_F20 */ | |
257 | 0xd2, /* VK_F21 */ | |
258 | 0xd3, /* VK_F22 */ | |
259 | 0xd4, /* VK_F23 */ | |
260 | 0xd5, /* VK_F24 */ | |
261 | -1, -1, -1, -1, -1, -1, -1, -1, | |
262 | 0x7f, /* VK_NUMLOCK */ | |
4ba58dd4 | 263 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x9f */ |
6cdfb6e6 RS |
264 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xaf */ |
265 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb9 */ | |
266 | -2, /* ; */ | |
267 | -2, /* = */ | |
268 | -2, /* , */ | |
269 | -2, /* \ */ | |
270 | -2, /* . */ | |
271 | -2, /* / */ | |
272 | -2, /* ` */ | |
4ba58dd4 | 273 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xcf */ |
6cdfb6e6 | 274 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xda */ |
4ba58dd4 RS |
275 | -2, -2, -2, -2, -2, /* 0xdf */ |
276 | -2, -2, -2, -2, -2, | |
277 | -1, /* 0xe5 */ | |
278 | -2, /* oxe6 */ | |
279 | -1, -1, /* 0xe8 */ | |
280 | -2, -2, -2, -2, -2, -2, -2, /* 0xef */ | |
281 | -2, -2, -2, -2, -2, -2, | |
282 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xff */ | |
6cdfb6e6 RS |
283 | }; |
284 | ||
daf38066 GV |
285 | /* return code -1 means that event_queue_ptr won't be incremented. |
286 | In other word, this event makes two key codes. (by himi) */ | |
c0386d7e | 287 | int |
6cdfb6e6 RS |
288 | key_event (KEY_EVENT_RECORD *event, struct input_event *emacs_ev) |
289 | { | |
290 | int map; | |
daf38066 | 291 | int key_flag = 0; |
b02466e8 | 292 | static BOOL map_virt_key_init_done; |
6cdfb6e6 RS |
293 | |
294 | /* Skip key-up events. */ | |
295 | if (event->bKeyDown == FALSE) | |
296 | return 0; | |
297 | ||
298 | if (event->wVirtualKeyCode > 0xff) | |
299 | { | |
300 | printf ("Unknown key code %d\n", event->wVirtualKeyCode); | |
301 | return 0; | |
302 | } | |
b02466e8 KH |
303 | |
304 | /* Patch needed for German keyboard. Ulrich Leodolter (1/11/95). */ | |
305 | if (! map_virt_key_init_done) | |
306 | { | |
307 | short vk; | |
308 | ||
309 | if ((vk = VkKeyScan (0x3c)) >= 0 && vk < 256) map_virt_key[vk] = -2; /* less */ | |
310 | if ((vk = VkKeyScan (0x3e)) >= 0 && vk < 256) map_virt_key[vk] = -2; /* greater */ | |
311 | ||
312 | map_virt_key_init_done = TRUE; | |
313 | } | |
6cdfb6e6 RS |
314 | |
315 | /* BUGBUG - Ignores the repeat count | |
316 | It's questionable whether we want to obey the repeat count anyway | |
317 | since keys usually aren't repeated unless key events back up in | |
318 | the queue. If they're backing up then we don't generally want | |
319 | to honor them later since that leads to significant slop in | |
320 | cursor motion when the system is under heavy load. */ | |
321 | ||
322 | map = map_virt_key[event->wVirtualKeyCode]; | |
323 | if (map == -1) | |
324 | { | |
325 | return 0; | |
326 | } | |
327 | else if (map == -2) | |
328 | { | |
329 | /* ASCII */ | |
330 | emacs_ev->kind = ascii_keystroke; | |
daf38066 GV |
331 | key_flag = win32_kbd_patch_key (event); /* 95.7.25 by himi */ |
332 | if (key_flag == 0) | |
333 | return 0; | |
9e539a3c | 334 | XSETINT (emacs_ev->code, event->uChar.AsciiChar); |
6cdfb6e6 | 335 | } |
daf38066 GV |
336 | #ifdef MULE |
337 | /* for IME */ | |
338 | else if (map == -3) | |
339 | { | |
340 | if ((event->dwControlKeyState & NLS_IME_CONVERSION) | |
341 | && !(event->dwControlKeyState & RIGHT_ALT_PRESSED) | |
342 | && !(event->dwControlKeyState & LEFT_ALT_PRESSED) | |
343 | && !(event->dwControlKeyState & RIGHT_CTRL_PRESSED) | |
344 | && !(event->dwControlKeyState & LEFT_CTRL_PRESSED)) | |
345 | { | |
346 | emacs_ev->kind = ascii_keystroke; | |
347 | XSETINT (emacs_ev->code, event->uChar.AsciiChar); | |
348 | } | |
349 | else | |
350 | return 0; | |
351 | } | |
352 | #endif | |
6cdfb6e6 RS |
353 | else |
354 | { | |
355 | /* non-ASCII */ | |
356 | emacs_ev->kind = non_ascii_keystroke; | |
357 | /* | |
358 | * make_lispy_event () now requires non-ascii codes to have | |
359 | * the full X keysym values (2nd byte is 0xff). add it on. | |
360 | */ | |
c0386d7e | 361 | #ifndef HAVE_NTGUI |
6cdfb6e6 | 362 | map |= 0xff00; |
c0386d7e | 363 | #endif |
9e539a3c | 364 | XSETINT (emacs_ev->code, map); |
6cdfb6e6 | 365 | } |
daf38066 GV |
366 | /* for Mule 2.2 (Based on Emacs 19.28) */ |
367 | #ifdef MULE | |
368 | XSET (emacs_ev->frame_or_window, Lisp_Frame, get_frame ()); | |
369 | #else | |
b02466e8 | 370 | XSETFRAME (emacs_ev->frame_or_window, get_frame ()); |
daf38066 | 371 | #endif |
b02466e8 | 372 | emacs_ev->modifiers = win32_kbd_mods_to_emacs (event->dwControlKeyState); |
6cdfb6e6 | 373 | emacs_ev->timestamp = GetTickCount (); |
daf38066 | 374 | if (key_flag == 2) return -1; /* 95.7.25 by himi */ |
6cdfb6e6 RS |
375 | return 1; |
376 | } | |
377 | ||
378 | /* Mouse position hook. */ | |
379 | void | |
b02466e8 | 380 | win32_mouse_position (FRAME_PTR *f, |
daf38066 | 381 | #ifndef MULE |
b02466e8 | 382 | int insist, |
daf38066 | 383 | #endif |
6cdfb6e6 RS |
384 | Lisp_Object *bar_window, |
385 | enum scroll_bar_part *part, | |
386 | Lisp_Object *x, | |
387 | Lisp_Object *y, | |
388 | unsigned long *time) | |
389 | { | |
390 | BLOCK_INPUT; | |
391 | ||
daf38066 | 392 | #ifndef MULE |
b02466e8 | 393 | insist = insist; |
daf38066 | 394 | #endif |
b02466e8 | 395 | |
6cdfb6e6 RS |
396 | *f = get_frame (); |
397 | *bar_window = Qnil; | |
398 | *part = 0; | |
0e7078f5 | 399 | selected_frame->mouse_moved = 0; |
6cdfb6e6 RS |
400 | |
401 | *x = movement_pos.X; | |
402 | *y = movement_pos.Y; | |
403 | *time = movement_time; | |
404 | ||
405 | UNBLOCK_INPUT; | |
406 | } | |
407 | ||
408 | /* Remember mouse motion and notify emacs. */ | |
409 | static void | |
410 | mouse_moved_to (int x, int y) | |
411 | { | |
412 | /* If we're in the same place, ignore it */ | |
413 | if (x != movement_pos.X || y != movement_pos.Y) | |
414 | { | |
0e7078f5 | 415 | selected_frame->mouse_moved = 1; |
6cdfb6e6 RS |
416 | movement_pos.X = x; |
417 | movement_pos.Y = y; | |
418 | movement_time = GetTickCount (); | |
419 | } | |
420 | } | |
421 | ||
422 | /* Consoles return button bits in a strange order: | |
423 | least significant - Leftmost button | |
424 | next - Rightmost button | |
425 | next - Leftmost+1 | |
426 | next - Leftmost+2... | |
427 | ||
428 | Assume emacs likes three button mice, so | |
429 | Left == 0 | |
430 | Middle == 1 | |
431 | Right == 2 | |
432 | Others increase from there. */ | |
433 | ||
434 | static int emacs_button_translation[NUM_MOUSE_BUTTONS] = | |
435 | { | |
436 | 0, 2, 1, 3, 4, | |
437 | }; | |
438 | ||
439 | static int | |
440 | do_mouse_event (MOUSE_EVENT_RECORD *event, | |
441 | struct input_event *emacs_ev) | |
442 | { | |
443 | static DWORD button_state = 0; | |
444 | DWORD but_change, mask; | |
445 | int i; | |
446 | ||
447 | if (event->dwEventFlags == MOUSE_MOVED) | |
448 | { | |
449 | /* For movement events we just note that the mouse has moved | |
450 | so that emacs will generate drag events. */ | |
451 | mouse_moved_to (event->dwMousePosition.X, event->dwMousePosition.Y); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | /* It looks like the console code sends us a mouse event with | |
456 | dwButtonState == 0 when a window is activated. Ignore this case. */ | |
457 | if (event->dwButtonState == button_state) | |
458 | return 0; | |
459 | ||
460 | emacs_ev->kind = mouse_click; | |
461 | ||
462 | /* Find out what button has changed state since the last button event. */ | |
463 | but_change = button_state ^ event->dwButtonState; | |
464 | mask = 1; | |
465 | for (i = 0; i < NUM_MOUSE_BUTTONS; i++, mask <<= 1) | |
466 | if (but_change & mask) | |
467 | { | |
9e539a3c | 468 | XSETINT (emacs_ev->code, emacs_button_translation[i]); |
6cdfb6e6 RS |
469 | break; |
470 | } | |
471 | ||
472 | /* If the changed button is out of emacs' range (highly unlikely) | |
473 | ignore this event. */ | |
474 | if (i == NUM_MOUSE_BUTTONS) | |
475 | return 0; | |
476 | ||
477 | button_state = event->dwButtonState; | |
478 | emacs_ev->timestamp = GetTickCount (); | |
b02466e8 | 479 | emacs_ev->modifiers = win32_kbd_mods_to_emacs (event->dwControlKeyState) | |
6cdfb6e6 RS |
480 | ((event->dwButtonState & mask) ? down_modifier : up_modifier); |
481 | ||
9e539a3c KH |
482 | XSETFASTINT (emacs_ev->x, event->dwMousePosition.X); |
483 | XSETFASTINT (emacs_ev->y, event->dwMousePosition.Y); | |
daf38066 GV |
484 | /* for Mule 2.2 (Based on Emacs 19.28 */ |
485 | #ifdef MULE | |
486 | XSET (emacs_ev->frame_or_window, Lisp_Frame, get_frame ()); | |
487 | #else | |
b02466e8 | 488 | XSETFRAME (emacs_ev->frame_or_window, get_frame ()); |
daf38066 | 489 | #endif |
6cdfb6e6 RS |
490 | |
491 | return 1; | |
492 | } | |
493 | ||
494 | static void | |
495 | resize_event (WINDOW_BUFFER_SIZE_RECORD *event) | |
496 | { | |
497 | FRAME_PTR f = get_frame (); | |
498 | ||
499 | change_frame_size (f, event->dwSize.Y, event->dwSize.X, 0, 1); | |
500 | SET_FRAME_GARBAGED (f); | |
501 | } | |
502 | ||
503 | int | |
504 | win32_read_socket (int sd, struct input_event *bufp, int numchars, | |
505 | int waitp, int expected) | |
506 | { | |
507 | BOOL no_events = TRUE; | |
508 | int nev, ret = 0, add; | |
509 | ||
510 | if (interrupt_input_blocked) | |
511 | { | |
512 | interrupt_input_pending = 1; | |
513 | return -1; | |
514 | } | |
515 | ||
516 | interrupt_input_pending = 0; | |
517 | BLOCK_INPUT; | |
518 | ||
519 | for (;;) | |
520 | { | |
521 | nev = fill_queue (waitp != 0); | |
522 | if (nev <= 0) | |
523 | { | |
524 | /* If nev == -1, there was some kind of error | |
525 | If nev == 0 then waitp must be zero and no events were available | |
526 | so return. */ | |
527 | UNBLOCK_INPUT; | |
528 | return nev; | |
529 | } | |
530 | ||
531 | while (nev > 0 && numchars > 0) | |
532 | { | |
533 | switch (queue_ptr->EventType) | |
534 | { | |
535 | case KEY_EVENT: | |
536 | add = key_event (&queue_ptr->Event.KeyEvent, bufp); | |
daf38066 GV |
537 | if (add == -1) /* 95.7.25 by himi */ |
538 | { | |
539 | queue_ptr--; | |
540 | add = 1; | |
541 | } | |
6cdfb6e6 RS |
542 | bufp += add; |
543 | ret += add; | |
544 | numchars -= add; | |
545 | break; | |
546 | ||
547 | case MOUSE_EVENT: | |
548 | add = do_mouse_event (&queue_ptr->Event.MouseEvent, bufp); | |
549 | bufp += add; | |
550 | ret += add; | |
551 | numchars -= add; | |
552 | break; | |
553 | ||
554 | case WINDOW_BUFFER_SIZE_EVENT: | |
555 | resize_event (&queue_ptr->Event.WindowBufferSizeEvent); | |
556 | break; | |
557 | ||
558 | case MENU_EVENT: | |
559 | case FOCUS_EVENT: | |
560 | /* Internal event types, ignored. */ | |
561 | break; | |
562 | } | |
563 | ||
564 | queue_ptr++; | |
565 | nev--; | |
566 | } | |
567 | ||
568 | if (ret > 0 || expected == 0) | |
569 | break; | |
570 | } | |
571 | ||
572 | UNBLOCK_INPUT; | |
573 | return ret; | |
574 | } |