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wined3d: Fix ATI2N pitch and offset calculations.
[wine.git] / server / queue.c
blobb2bc603af5d0a30809a41dc06a9cbacaa2782b6b
1 /*
2 * Server-side message queues
3 *
4 * Copyright (C) 2000 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <stdarg.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28
29 #include "ntstatus.h"
30 #define WIN32_NO_STATUS
31 #include "windef.h"
32 #include "winbase.h"
33 #include "wingdi.h"
34 #include "winuser.h"
35 #include "winternl.h"
36
37 #include "handle.h"
38 #include "file.h"
39 #include "thread.h"
40 #include "process.h"
41 #include "request.h"
42 #include "user.h"
43
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
46
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
49
50
51 struct message_result
52 {
53 struct list sender_entry; /* entry in sender list */
54 struct message *msg; /* message the result is for */
55 struct message_result *recv_next; /* next in receiver list */
56 struct msg_queue *sender; /* sender queue */
57 struct msg_queue *receiver; /* receiver queue */
58 int replied; /* has it been replied to? */
59 unsigned int error; /* error code to pass back to sender */
60 lparam_t result; /* reply result */
61 struct message *callback_msg; /* message to queue for callback */
62 void *data; /* message reply data */
63 unsigned int data_size; /* size of message reply data */
64 struct timeout_user *timeout; /* result timeout */
65 };
66
67 struct message
68 {
69 struct list entry; /* entry in message list */
70 enum message_type type; /* message type */
71 user_handle_t win; /* window handle */
72 unsigned int msg; /* message code */
73 lparam_t wparam; /* parameters */
74 lparam_t lparam; /* parameters */
75 unsigned int time; /* message time */
76 void *data; /* message data for sent messages */
77 unsigned int data_size; /* size of message data */
78 unsigned int unique_id; /* unique id for nested hw message waits */
79 struct message_result *result; /* result in sender queue */
80 };
81
82 struct timer
83 {
84 struct list entry; /* entry in timer list */
85 timeout_t when; /* next expiration */
86 unsigned int rate; /* timer rate in ms */
87 user_handle_t win; /* window handle */
88 unsigned int msg; /* message to post */
89 lparam_t id; /* timer id */
90 lparam_t lparam; /* lparam for message */
91 };
92
93 struct thread_input
94 {
95 struct object obj; /* object header */
96 struct desktop *desktop; /* desktop that this thread input belongs to */
97 user_handle_t focus; /* focus window */
98 user_handle_t capture; /* capture window */
99 user_handle_t active; /* active window */
100 user_handle_t menu_owner; /* current menu owner window */
101 user_handle_t move_size; /* current moving/resizing window */
102 user_handle_t caret; /* caret window */
103 rectangle_t caret_rect; /* caret rectangle */
104 int caret_hide; /* caret hide count */
105 int caret_state; /* caret on/off state */
106 struct list msg_list; /* list of hardware messages */
107 unsigned char keystate[256]; /* state of each key */
108 };
109
110 struct msg_queue
111 {
112 struct object obj; /* object header */
113 struct fd *fd; /* optional file descriptor to poll */
114 unsigned int wake_bits; /* wakeup bits */
115 unsigned int wake_mask; /* wakeup mask */
116 unsigned int changed_bits; /* changed wakeup bits */
117 unsigned int changed_mask; /* changed wakeup mask */
118 int paint_count; /* pending paint messages count */
119 int quit_message; /* is there a pending quit message? */
120 int exit_code; /* exit code of pending quit message */
121 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
122 struct list send_result; /* stack of sent messages waiting for result */
123 struct list callback_result; /* list of callback messages waiting for result */
124 struct message_result *recv_result; /* stack of received messages waiting for result */
125 struct list pending_timers; /* list of pending timers */
126 struct list expired_timers; /* list of expired timers */
127 lparam_t next_timer_id; /* id for the next timer with a 0 window */
128 struct timeout_user *timeout; /* timeout for next timer to expire */
129 struct thread_input *input; /* thread input descriptor */
130 struct hook_table *hooks; /* hook table */
131 timeout_t last_get_msg; /* time of last get message call */
132 };
133
134 static void msg_queue_dump( struct object *obj, int verbose );
135 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
136 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
137 static int msg_queue_signaled( struct object *obj, struct thread *thread );
138 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
139 static void msg_queue_destroy( struct object *obj );
140 static void msg_queue_poll_event( struct fd *fd, int event );
141 static void thread_input_dump( struct object *obj, int verbose );
142 static void thread_input_destroy( struct object *obj );
143 static void timer_callback( void *private );
144
145 static const struct object_ops msg_queue_ops =
146 {
147 sizeof(struct msg_queue), /* size */
148 msg_queue_dump, /* dump */
149 no_get_type, /* get_type */
150 msg_queue_add_queue, /* add_queue */
151 msg_queue_remove_queue, /* remove_queue */
152 msg_queue_signaled, /* signaled */
153 msg_queue_satisfied, /* satisfied */
154 no_signal, /* signal */
155 no_get_fd, /* get_fd */
156 no_map_access, /* map_access */
157 default_get_sd, /* get_sd */
158 default_set_sd, /* set_sd */
159 no_lookup_name, /* lookup_name */
160 no_open_file, /* open_file */
161 no_close_handle, /* close_handle */
162 msg_queue_destroy /* destroy */
163 };
164
165 static const struct fd_ops msg_queue_fd_ops =
166 {
167 NULL, /* get_poll_events */
168 msg_queue_poll_event, /* poll_event */
169 NULL, /* flush */
170 NULL, /* get_fd_type */
171 NULL, /* ioctl */
172 NULL, /* queue_async */
173 NULL, /* reselect_async */
174 NULL /* cancel async */
175 };
176
177
178 static const struct object_ops thread_input_ops =
179 {
180 sizeof(struct thread_input), /* size */
181 thread_input_dump, /* dump */
182 no_get_type, /* get_type */
183 no_add_queue, /* add_queue */
184 NULL, /* remove_queue */
185 NULL, /* signaled */
186 NULL, /* satisfied */
187 no_signal, /* signal */
188 no_get_fd, /* get_fd */
189 no_map_access, /* map_access */
190 default_get_sd, /* get_sd */
191 default_set_sd, /* set_sd */
192 no_lookup_name, /* lookup_name */
193 no_open_file, /* open_file */
194 no_close_handle, /* close_handle */
195 thread_input_destroy /* destroy */
196 };
197
198 /* pointer to input structure of foreground thread */
199 static struct thread_input *foreground_input;
200 static unsigned int last_input_time;
201
202 static void free_message( struct message *msg );
203
204 /* set the caret window in a given thread input */
205 static void set_caret_window( struct thread_input *input, user_handle_t win )
206 {
207 if (!win || win != input->caret)
208 {
209 input->caret_rect.left = 0;
210 input->caret_rect.top = 0;
211 input->caret_rect.right = 0;
212 input->caret_rect.bottom = 0;
213 }
214 input->caret = win;
215 input->caret_hide = 1;
216 input->caret_state = 0;
217 }
218
219 /* create a thread input object */
220 static struct thread_input *create_thread_input( struct thread *thread )
221 {
222 struct thread_input *input;
223
224 if ((input = alloc_object( &thread_input_ops )))
225 {
226 input->focus = 0;
227 input->capture = 0;
228 input->active = 0;
229 input->menu_owner = 0;
230 input->move_size = 0;
231 list_init( &input->msg_list );
232 set_caret_window( input, 0 );
233 memset( input->keystate, 0, sizeof(input->keystate) );
234
235 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
236 {
237 release_object( input );
238 return NULL;
239 }
240 }
241 return input;
242 }
243
244 /* release the thread input data of a given thread */
245 static inline void release_thread_input( struct thread *thread )
246 {
247 struct thread_input *input = thread->queue->input;
248
249 if (!input) return;
250 release_object( input );
251 thread->queue->input = NULL;
252 }
253
254 /* create a message queue object */
255 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
256 {
257 struct msg_queue *queue;
258 int i;
259
260 if (!input && !(input = create_thread_input( thread ))) return NULL;
261 if ((queue = alloc_object( &msg_queue_ops )))
262 {
263 queue->fd = NULL;
264 queue->wake_bits = 0;
265 queue->wake_mask = 0;
266 queue->changed_bits = 0;
267 queue->changed_mask = 0;
268 queue->paint_count = 0;
269 queue->quit_message = 0;
270 queue->recv_result = NULL;
271 queue->next_timer_id = 0x7fff;
272 queue->timeout = NULL;
273 queue->input = (struct thread_input *)grab_object( input );
274 queue->hooks = NULL;
275 queue->last_get_msg = current_time;
276 list_init( &queue->send_result );
277 list_init( &queue->callback_result );
278 list_init( &queue->pending_timers );
279 list_init( &queue->expired_timers );
280 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
281
282 thread->queue = queue;
283 }
284 release_object( input );
285 return queue;
286 }
287
288 /* free the message queue of a thread at thread exit */
289 void free_msg_queue( struct thread *thread )
290 {
291 remove_thread_hooks( thread );
292 if (!thread->queue) return;
293 release_object( thread->queue );
294 thread->queue = NULL;
295 }
296
297 /* get the hook table for a given thread */
298 struct hook_table *get_queue_hooks( struct thread *thread )
299 {
300 if (!thread->queue) return NULL;
301 return thread->queue->hooks;
302 }
303
304 /* set the hook table for a given thread, allocating the queue if needed */
305 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
306 {
307 struct msg_queue *queue = thread->queue;
308 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
309 if (queue->hooks) release_object( queue->hooks );
310 queue->hooks = hooks;
311 }
312
313 /* check the queue status */
314 static inline int is_signaled( struct msg_queue *queue )
315 {
316 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
317 }
318
319 /* set some queue bits */
320 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
321 {
322 queue->wake_bits |= bits;
323 queue->changed_bits |= bits;
324 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
325 }
326
327 /* clear some queue bits */
328 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
329 {
330 queue->wake_bits &= ~bits;
331 queue->changed_bits &= ~bits;
332 }
333
334 /* check whether msg is a keyboard message */
335 static inline int is_keyboard_msg( struct message *msg )
336 {
337 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
338 }
339
340 /* check if message is matched by the filter */
341 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
342 {
343 return (msg >= first && msg <= last);
344 }
345
346 /* check whether a message filter contains at least one potential hardware message */
347 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
348 {
349 /* hardware message ranges are (in numerical order):
350 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
351 * WM_KEYFIRST .. WM_KEYLAST
352 * WM_MOUSEFIRST .. WM_MOUSELAST
353 */
354 if (last < WM_NCMOUSEFIRST) return 0;
355 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
356 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
357 if (first > WM_MOUSELAST) return 0;
358 return 1;
359 }
360
361 /* get the QS_* bit corresponding to a given hardware message */
362 static inline int get_hardware_msg_bit( struct message *msg )
363 {
364 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
365 if (is_keyboard_msg( msg )) return QS_KEY;
366 return QS_MOUSEBUTTON;
367 }
368
369 /* get the current thread queue, creating it if needed */
370 static inline struct msg_queue *get_current_queue(void)
371 {
372 struct msg_queue *queue = current->queue;
373 if (!queue) queue = create_msg_queue( current, NULL );
374 return queue;
375 }
376
377 /* get a (pseudo-)unique id to tag hardware messages */
378 static inline unsigned int get_unique_id(void)
379 {
380 static unsigned int id;
381 if (!++id) id = 1; /* avoid an id of 0 */
382 return id;
383 }
384
385 /* try to merge a message with the last in the list; return 1 if successful */
386 static int merge_message( struct thread_input *input, const struct message *msg )
387 {
388 struct message *prev;
389 struct list *ptr = list_tail( &input->msg_list );
390
391 if (!ptr) return 0;
392 prev = LIST_ENTRY( ptr, struct message, entry );
393 if (prev->result) return 0;
394 if (prev->win && msg->win && prev->win != msg->win) return 0;
395 if (prev->msg != msg->msg) return 0;
396 if (prev->type != msg->type) return 0;
397 /* now we can merge it */
398 prev->wparam = msg->wparam;
399 prev->lparam = msg->lparam;
400 prev->time = msg->time;
401 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
402 {
403 struct hardware_msg_data *prev_data = prev->data;
404 struct hardware_msg_data *msg_data = msg->data;
405 prev_data->x = msg_data->x;
406 prev_data->y = msg_data->y;
407 prev_data->info = msg_data->info;
408 }
409 return 1;
410 }
411
412 /* free a result structure */
413 static void free_result( struct message_result *result )
414 {
415 if (result->timeout) remove_timeout_user( result->timeout );
416 free( result->data );
417 if (result->callback_msg) free_message( result->callback_msg );
418 free( result );
419 }
420
421 /* remove the result from the sender list it is on */
422 static inline void remove_result_from_sender( struct message_result *result )
423 {
424 assert( result->sender );
425
426 list_remove( &result->sender_entry );
427 result->sender = NULL;
428 if (!result->receiver) free_result( result );
429 }
430
431 /* store the message result in the appropriate structure */
432 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
433 {
434 res->result = result;
435 res->error = error;
436 res->replied = 1;
437 if (res->timeout)
438 {
439 remove_timeout_user( res->timeout );
440 res->timeout = NULL;
441 }
442 if (res->sender)
443 {
444 if (res->callback_msg)
445 {
446 /* queue the callback message in the sender queue */
447 struct callback_msg_data *data = res->callback_msg->data;
448 data->result = result;
449 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
450 set_queue_bits( res->sender, QS_SENDMESSAGE );
451 res->callback_msg = NULL;
452 remove_result_from_sender( res );
453 }
454 else
455 {
456 /* wake sender queue if waiting on this result */
457 if (list_head(&res->sender->send_result) == &res->sender_entry)
458 set_queue_bits( res->sender, QS_SMRESULT );
459 }
460 }
461
462 }
463
464 /* free a message when deleting a queue or window */
465 static void free_message( struct message *msg )
466 {
467 struct message_result *result = msg->result;
468 if (result)
469 {
470 result->msg = NULL;
471 if (result->sender)
472 {
473 result->receiver = NULL;
474 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
475 }
476 else free_result( result );
477 }
478 free( msg->data );
479 free( msg );
480 }
481
482 /* remove (and free) a message from a message list */
483 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
484 enum message_kind kind )
485 {
486 list_remove( &msg->entry );
487 switch(kind)
488 {
489 case SEND_MESSAGE:
490 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
491 break;
492 case POST_MESSAGE:
493 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
494 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
495 break;
496 }
497 free_message( msg );
498 }
499
500 /* message timed out without getting a reply */
501 static void result_timeout( void *private )
502 {
503 struct message_result *result = private;
504
505 assert( !result->replied );
506
507 result->timeout = NULL;
508
509 if (result->msg) /* not received yet */
510 {
511 struct message *msg = result->msg;
512
513 result->msg = NULL;
514 msg->result = NULL;
515 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
516 result->receiver = NULL;
517 if (!result->sender)
518 {
519 free_result( result );
520 return;
521 }
522 }
523
524 store_message_result( result, 0, STATUS_TIMEOUT );
525 }
526
527 /* allocate and fill a message result structure */
528 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
529 struct msg_queue *recv_queue,
530 struct message *msg, timeout_t timeout )
531 {
532 struct message_result *result = mem_alloc( sizeof(*result) );
533 if (result)
534 {
535 result->msg = msg;
536 result->sender = send_queue;
537 result->receiver = recv_queue;
538 result->replied = 0;
539 result->data = NULL;
540 result->data_size = 0;
541 result->timeout = NULL;
542
543 if (msg->type == MSG_CALLBACK)
544 {
545 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
546
547 if (!callback_msg)
548 {
549 free( result );
550 return NULL;
551 }
552 callback_msg->type = MSG_CALLBACK_RESULT;
553 callback_msg->win = msg->win;
554 callback_msg->msg = msg->msg;
555 callback_msg->wparam = 0;
556 callback_msg->lparam = 0;
557 callback_msg->time = get_tick_count();
558 callback_msg->result = NULL;
559 /* steal the data from the original message */
560 callback_msg->data = msg->data;
561 callback_msg->data_size = msg->data_size;
562 msg->data = NULL;
563 msg->data_size = 0;
564
565 result->callback_msg = callback_msg;
566 list_add_head( &send_queue->callback_result, &result->sender_entry );
567 }
568 else
569 {
570 result->callback_msg = NULL;
571 list_add_head( &send_queue->send_result, &result->sender_entry );
572 }
573
574 if (timeout != TIMEOUT_INFINITE)
575 result->timeout = add_timeout_user( timeout, result_timeout, result );
576 }
577 return result;
578 }
579
580 /* receive a message, removing it from the sent queue */
581 static void receive_message( struct msg_queue *queue, struct message *msg,
582 struct get_message_reply *reply )
583 {
584 struct message_result *result = msg->result;
585
586 reply->total = msg->data_size;
587 if (msg->data_size > get_reply_max_size())
588 {
589 set_error( STATUS_BUFFER_OVERFLOW );
590 return;
591 }
592 reply->type = msg->type;
593 reply->win = msg->win;
594 reply->msg = msg->msg;
595 reply->wparam = msg->wparam;
596 reply->lparam = msg->lparam;
597 reply->time = msg->time;
598
599 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
600
601 list_remove( &msg->entry );
602 /* put the result on the receiver result stack */
603 if (result)
604 {
605 result->msg = NULL;
606 result->recv_next = queue->recv_result;
607 queue->recv_result = result;
608 }
609 free( msg );
610 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
611 }
612
613 /* set the result of the current received message */
614 static void reply_message( struct msg_queue *queue, lparam_t result,
615 unsigned int error, int remove, const void *data, data_size_t len )
616 {
617 struct message_result *res = queue->recv_result;
618
619 if (remove)
620 {
621 queue->recv_result = res->recv_next;
622 res->receiver = NULL;
623 if (!res->sender) /* no one waiting for it */
624 {
625 free_result( res );
626 return;
627 }
628 }
629 if (!res->replied)
630 {
631 if (len && (res->data = memdup( data, len ))) res->data_size = len;
632 store_message_result( res, result, error );
633 }
634 }
635
636 static int match_window( user_handle_t win, user_handle_t msg_win )
637 {
638 if (!win) return 1;
639 if (win == -1 || win == 1) return !msg_win;
640 if (msg_win == win) return 1;
641 return is_child_window( win, msg_win );
642 }
643
644 /* retrieve a posted message */
645 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
646 unsigned int first, unsigned int last, unsigned int flags,
647 struct get_message_reply *reply )
648 {
649 struct message *msg;
650
651 /* check against the filters */
652 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
653 {
654 if (!match_window( win, msg->win )) continue;
655 if (!check_msg_filter( msg->msg, first, last )) continue;
656 goto found; /* found one */
657 }
658 return 0;
659
660 /* return it to the app */
661 found:
662 reply->total = msg->data_size;
663 if (msg->data_size > get_reply_max_size())
664 {
665 set_error( STATUS_BUFFER_OVERFLOW );
666 return 1;
667 }
668 reply->type = msg->type;
669 reply->win = msg->win;
670 reply->msg = msg->msg;
671 reply->wparam = msg->wparam;
672 reply->lparam = msg->lparam;
673 reply->time = msg->time;
674
675 if (flags & PM_REMOVE)
676 {
677 if (msg->data)
678 {
679 set_reply_data_ptr( msg->data, msg->data_size );
680 msg->data = NULL;
681 msg->data_size = 0;
682 }
683 remove_queue_message( queue, msg, POST_MESSAGE );
684 }
685 else if (msg->data) set_reply_data( msg->data, msg->data_size );
686
687 return 1;
688 }
689
690 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
691 struct get_message_reply *reply )
692 {
693 if (queue->quit_message)
694 {
695 reply->total = 0;
696 reply->type = MSG_POSTED;
697 reply->win = 0;
698 reply->msg = WM_QUIT;
699 reply->wparam = queue->exit_code;
700 reply->lparam = 0;
701 reply->time = get_tick_count();
702
703 if (flags & PM_REMOVE)
704 {
705 queue->quit_message = 0;
706 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
707 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
708 }
709 return 1;
710 }
711 else
712 return 0;
713 }
714
715 /* empty a message list and free all the messages */
716 static void empty_msg_list( struct list *list )
717 {
718 struct list *ptr;
719
720 while ((ptr = list_head( list )) != NULL)
721 {
722 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
723 list_remove( &msg->entry );
724 free_message( msg );
725 }
726 }
727
728 /* cleanup all pending results when deleting a queue */
729 static void cleanup_results( struct msg_queue *queue )
730 {
731 struct list *entry;
732
733 while ((entry = list_head( &queue->send_result )) != NULL)
734 {
735 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
736 }
737
738 while ((entry = list_head( &queue->callback_result )) != NULL)
739 {
740 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
741 }
742
743 while (queue->recv_result)
744 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
745 }
746
747 /* check if the thread owning the queue is hung (not checking for messages) */
748 static int is_queue_hung( struct msg_queue *queue )
749 {
750 struct wait_queue_entry *entry;
751
752 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
753 return 0; /* less than 5 seconds since last get message -> not hung */
754
755 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
756 {
757 if (entry->thread->queue == queue)
758 return 0; /* thread is waiting on queue -> not hung */
759 }
760 return 1;
761 }
762
763 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
764 {
765 struct msg_queue *queue = (struct msg_queue *)obj;
766 struct process *process = entry->thread->process;
767
768 /* a thread can only wait on its own queue */
769 if (entry->thread->queue != queue)
770 {
771 set_error( STATUS_ACCESS_DENIED );
772 return 0;
773 }
774 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
775
776 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
777 set_fd_events( queue->fd, POLLIN );
778 add_queue( obj, entry );
779 return 1;
780 }
781
782 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
783 {
784 struct msg_queue *queue = (struct msg_queue *)obj;
785
786 remove_queue( obj, entry );
787 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
788 set_fd_events( queue->fd, 0 );
789 }
790
791 static void msg_queue_dump( struct object *obj, int verbose )
792 {
793 struct msg_queue *queue = (struct msg_queue *)obj;
794 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
795 queue->wake_bits, queue->wake_mask );
796 }
797
798 static int msg_queue_signaled( struct object *obj, struct thread *thread )
799 {
800 struct msg_queue *queue = (struct msg_queue *)obj;
801 int ret = 0;
802
803 if (queue->fd)
804 {
805 if ((ret = check_fd_events( queue->fd, POLLIN )))
806 /* stop waiting on select() if we are signaled */
807 set_fd_events( queue->fd, 0 );
808 else if (!list_empty( &obj->wait_queue ))
809 /* restart waiting on poll() if we are no longer signaled */
810 set_fd_events( queue->fd, POLLIN );
811 }
812 return ret || is_signaled( queue );
813 }
814
815 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
816 {
817 struct msg_queue *queue = (struct msg_queue *)obj;
818 queue->wake_mask = 0;
819 queue->changed_mask = 0;
820 return 0; /* Not abandoned */
821 }
822
823 static void msg_queue_destroy( struct object *obj )
824 {
825 struct msg_queue *queue = (struct msg_queue *)obj;
826 struct list *ptr;
827 int i;
828
829 cleanup_results( queue );
830 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
831
832 while ((ptr = list_head( &queue->pending_timers )))
833 {
834 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
835 list_remove( &timer->entry );
836 free( timer );
837 }
838 while ((ptr = list_head( &queue->expired_timers )))
839 {
840 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
841 list_remove( &timer->entry );
842 free( timer );
843 }
844 if (queue->timeout) remove_timeout_user( queue->timeout );
845 if (queue->input) release_object( queue->input );
846 if (queue->hooks) release_object( queue->hooks );
847 if (queue->fd) release_object( queue->fd );
848 }
849
850 static void msg_queue_poll_event( struct fd *fd, int event )
851 {
852 struct msg_queue *queue = get_fd_user( fd );
853 assert( queue->obj.ops == &msg_queue_ops );
854
855 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
856 else set_fd_events( queue->fd, 0 );
857 wake_up( &queue->obj, 0 );
858 }
859
860 static void thread_input_dump( struct object *obj, int verbose )
861 {
862 struct thread_input *input = (struct thread_input *)obj;
863 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
864 input->focus, input->capture, input->active );
865 }
866
867 static void thread_input_destroy( struct object *obj )
868 {
869 struct thread_input *input = (struct thread_input *)obj;
870
871 if (foreground_input == input) foreground_input = NULL;
872 empty_msg_list( &input->msg_list );
873 if (input->desktop) release_object( input->desktop );
874 }
875
876 /* fix the thread input data when a window is destroyed */
877 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
878 {
879 struct thread_input *input = queue->input;
880
881 if (window == input->focus) input->focus = 0;
882 if (window == input->capture) input->capture = 0;
883 if (window == input->active) input->active = 0;
884 if (window == input->menu_owner) input->menu_owner = 0;
885 if (window == input->move_size) input->move_size = 0;
886 if (window == input->caret) set_caret_window( input, 0 );
887 }
888
889 /* check if the specified window can be set in the input data of a given queue */
890 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
891 {
892 struct thread *thread;
893 int ret = 0;
894
895 if (!window) return 1; /* we can always clear the data */
896
897 if ((thread = get_window_thread( window )))
898 {
899 ret = (queue->input == thread->queue->input);
900 if (!ret) set_error( STATUS_ACCESS_DENIED );
901 release_object( thread );
902 }
903 else set_error( STATUS_INVALID_HANDLE );
904
905 return ret;
906 }
907
908 /* make sure the specified thread has a queue */
909 int init_thread_queue( struct thread *thread )
910 {
911 if (thread->queue) return 1;
912 return (create_msg_queue( thread, NULL ) != NULL);
913 }
914
915 /* attach two thread input data structures */
916 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
917 {
918 struct desktop *desktop;
919 struct thread_input *input;
920
921 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
922 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
923 input = (struct thread_input *)grab_object( thread_to->queue->input );
924 if (input->desktop != desktop)
925 {
926 set_error( STATUS_ACCESS_DENIED );
927 release_object( input );
928 release_object( desktop );
929 return 0;
930 }
931 release_object( desktop );
932
933 if (thread_from->queue)
934 {
935 release_thread_input( thread_from );
936 thread_from->queue->input = input;
937 }
938 else
939 {
940 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
941 }
942 memset( input->keystate, 0, sizeof(input->keystate) );
943 return 1;
944 }
945
946 /* detach two thread input data structures */
947 void detach_thread_input( struct thread *thread_from )
948 {
949 struct thread_input *input;
950
951 if ((input = create_thread_input( thread_from )))
952 {
953 release_thread_input( thread_from );
954 thread_from->queue->input = input;
955 }
956 }
957
958
959 /* set the next timer to expire */
960 static void set_next_timer( struct msg_queue *queue )
961 {
962 struct list *ptr;
963
964 if (queue->timeout)
965 {
966 remove_timeout_user( queue->timeout );
967 queue->timeout = NULL;
968 }
969 if ((ptr = list_head( &queue->pending_timers )))
970 {
971 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
972 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
973 }
974 /* set/clear QS_TIMER bit */
975 if (list_empty( &queue->expired_timers ))
976 clear_queue_bits( queue, QS_TIMER );
977 else
978 set_queue_bits( queue, QS_TIMER );
979 }
980
981 /* find a timer from its window and id */
982 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
983 unsigned int msg, lparam_t id )
984 {
985 struct list *ptr;
986
987 /* we need to search both lists */
988
989 LIST_FOR_EACH( ptr, &queue->pending_timers )
990 {
991 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
992 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
993 }
994 LIST_FOR_EACH( ptr, &queue->expired_timers )
995 {
996 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
997 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
998 }
999 return NULL;
1000 }
1001
1002 /* callback for the next timer expiration */
1003 static void timer_callback( void *private )
1004 {
1005 struct msg_queue *queue = private;
1006 struct list *ptr;
1007
1008 queue->timeout = NULL;
1009 /* move on to the next timer */
1010 ptr = list_head( &queue->pending_timers );
1011 list_remove( ptr );
1012 list_add_tail( &queue->expired_timers, ptr );
1013 set_next_timer( queue );
1014 }
1015
1016 /* link a timer at its rightful place in the queue list */
1017 static void link_timer( struct msg_queue *queue, struct timer *timer )
1018 {
1019 struct list *ptr;
1020
1021 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1022 {
1023 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1024 if (t->when >= timer->when) break;
1025 }
1026 list_add_before( ptr, &timer->entry );
1027 }
1028
1029 /* remove a timer from the queue timer list and free it */
1030 static void free_timer( struct msg_queue *queue, struct timer *timer )
1031 {
1032 list_remove( &timer->entry );
1033 free( timer );
1034 set_next_timer( queue );
1035 }
1036
1037 /* restart an expired timer */
1038 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1039 {
1040 list_remove( &timer->entry );
1041 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1042 link_timer( queue, timer );
1043 set_next_timer( queue );
1044 }
1045
1046 /* find an expired timer matching the filtering parameters */
1047 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1048 unsigned int get_first, unsigned int get_last,
1049 int remove )
1050 {
1051 struct list *ptr;
1052
1053 LIST_FOR_EACH( ptr, &queue->expired_timers )
1054 {
1055 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1056 if (win && timer->win != win) continue;
1057 if (check_msg_filter( timer->msg, get_first, get_last ))
1058 {
1059 if (remove) restart_timer( queue, timer );
1060 return timer;
1061 }
1062 }
1063 return NULL;
1064 }
1065
1066 /* add a timer */
1067 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1068 {
1069 struct timer *timer = mem_alloc( sizeof(*timer) );
1070 if (timer)
1071 {
1072 timer->rate = max( rate, 1 );
1073 timer->when = current_time + (timeout_t)timer->rate * 10000;
1074 link_timer( queue, timer );
1075 /* check if we replaced the next timer */
1076 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1077 }
1078 return timer;
1079 }
1080
1081 /* change the input key state for a given key */
1082 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1083 {
1084 if (down)
1085 {
1086 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1087 input->keystate[key] |= 0x80;
1088 }
1089 else input->keystate[key] &= ~0x80;
1090 }
1091
1092 /* update the input key state for a keyboard message */
1093 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1094 {
1095 unsigned char key;
1096 int down = 0;
1097
1098 switch (msg->msg)
1099 {
1100 case WM_LBUTTONDOWN:
1101 down = 1;
1102 /* fall through */
1103 case WM_LBUTTONUP:
1104 set_input_key_state( input, VK_LBUTTON, down );
1105 break;
1106 case WM_MBUTTONDOWN:
1107 down = 1;
1108 /* fall through */
1109 case WM_MBUTTONUP:
1110 set_input_key_state( input, VK_MBUTTON, down );
1111 break;
1112 case WM_RBUTTONDOWN:
1113 down = 1;
1114 /* fall through */
1115 case WM_RBUTTONUP:
1116 set_input_key_state( input, VK_RBUTTON, down );
1117 break;
1118 case WM_XBUTTONDOWN:
1119 down = 1;
1120 /* fall through */
1121 case WM_XBUTTONUP:
1122 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1123 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1124 break;
1125 case WM_KEYDOWN:
1126 case WM_SYSKEYDOWN:
1127 down = 1;
1128 /* fall through */
1129 case WM_KEYUP:
1130 case WM_SYSKEYUP:
1131 key = (unsigned char)msg->wparam;
1132 set_input_key_state( input, key, down );
1133 switch(key)
1134 {
1135 case VK_LCONTROL:
1136 case VK_RCONTROL:
1137 down = (input->keystate[VK_LCONTROL] | input->keystate[VK_RCONTROL]) & 0x80;
1138 set_input_key_state( input, VK_CONTROL, down );
1139 break;
1140 case VK_LMENU:
1141 case VK_RMENU:
1142 down = (input->keystate[VK_LMENU] | input->keystate[VK_RMENU]) & 0x80;
1143 set_input_key_state( input, VK_MENU, down );
1144 break;
1145 case VK_LSHIFT:
1146 case VK_RSHIFT:
1147 down = (input->keystate[VK_LSHIFT] | input->keystate[VK_RSHIFT]) & 0x80;
1148 set_input_key_state( input, VK_SHIFT, down );
1149 break;
1150 }
1151 break;
1152 }
1153 }
1154
1155 /* release the hardware message currently being processed by the given thread */
1156 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1157 int remove, user_handle_t new_win )
1158 {
1159 struct thread_input *input = queue->input;
1160 struct message *msg;
1161
1162 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1163 {
1164 if (msg->unique_id == hw_id) break;
1165 }
1166 if (&msg->entry == &input->msg_list) return; /* not found */
1167
1168 /* clear the queue bit for that message */
1169 if (remove || new_win)
1170 {
1171 struct message *other;
1172 int clr_bit;
1173
1174 clr_bit = get_hardware_msg_bit( msg );
1175 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1176 {
1177 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1178 {
1179 clr_bit = 0;
1180 break;
1181 }
1182 }
1183 if (clr_bit) clear_queue_bits( queue, clr_bit );
1184 }
1185
1186 if (new_win) /* set the new window */
1187 {
1188 struct thread *owner = get_window_thread( new_win );
1189 if (owner)
1190 {
1191 msg->win = new_win;
1192 if (owner->queue->input != input)
1193 {
1194 list_remove( &msg->entry );
1195 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1196 {
1197 free_message( msg );
1198 release_object( owner );
1199 return;
1200 }
1201 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1202 }
1203 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1204 remove = 0;
1205 release_object( owner );
1206 }
1207 }
1208 if (remove)
1209 {
1210 update_input_key_state( input, msg );
1211 list_remove( &msg->entry );
1212 free_message( msg );
1213 }
1214 }
1215
1216 /* find the window that should receive a given hardware message */
1217 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1218 struct hardware_msg_data *data, unsigned int *msg_code )
1219 {
1220 user_handle_t win = 0;
1221
1222 *msg_code = msg->msg;
1223 if (is_keyboard_msg( msg ))
1224 {
1225 if (input && !(win = input->focus))
1226 {
1227 win = input->active;
1228 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1229 }
1230 }
1231 else /* mouse message */
1232 {
1233 if (!input || !(win = input->capture))
1234 {
1235 if (!(win = msg->win) || !is_window_visible( win ))
1236 {
1237 if (input) win = window_from_point( input->desktop, data->x, data->y );
1238 }
1239 }
1240 }
1241 return win;
1242 }
1243
1244 /* queue a hardware message into a given thread input */
1245 static void queue_hardware_message( struct msg_queue *queue, struct message *msg,
1246 struct hardware_msg_data *data )
1247 {
1248 user_handle_t win;
1249 struct thread *thread;
1250 struct thread_input *input = queue ? queue->input : foreground_input;
1251 unsigned int msg_code;
1252
1253 last_input_time = get_tick_count();
1254 win = find_hardware_message_window( input, msg, data, &msg_code );
1255 if (!win || !(thread = get_window_thread(win)))
1256 {
1257 if (input) update_input_key_state( input, msg );
1258 free( msg );
1259 return;
1260 }
1261 input = thread->queue->input;
1262
1263 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1264 else
1265 {
1266 msg->unique_id = 0; /* will be set once we return it to the app */
1267 list_add_tail( &input->msg_list, &msg->entry );
1268 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1269 }
1270 release_object( thread );
1271 }
1272
1273 /* check message filter for a hardware message */
1274 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1275 user_handle_t filter_win, unsigned int first, unsigned int last )
1276 {
1277 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1278 {
1279 /* we can only test the window for a keyboard message since the
1280 * dest window for a mouse message depends on hittest */
1281 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1282 return 0;
1283 /* the message code is final for a keyboard message, we can simply check it */
1284 return check_msg_filter( msg_code, first, last );
1285 }
1286 else /* mouse message */
1287 {
1288 /* we need to check all possible values that the message can have in the end */
1289
1290 if (check_msg_filter( msg_code, first, last )) return 1;
1291 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1292
1293 /* all other messages can become non-client messages */
1294 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1295
1296 /* clicks can become double-clicks or non-client double-clicks */
1297 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1298 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1299 {
1300 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1301 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1302 }
1303 return 0;
1304 }
1305 }
1306
1307
1308 /* find a hardware message for the given queue */
1309 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1310 unsigned int first, unsigned int last, struct get_message_reply *reply )
1311 {
1312 struct thread_input *input = thread->queue->input;
1313 struct thread *win_thread;
1314 struct list *ptr;
1315 user_handle_t win;
1316 int clear_bits, got_one = 0;
1317 unsigned int msg_code;
1318
1319 ptr = list_head( &input->msg_list );
1320 if (hw_id)
1321 {
1322 while (ptr)
1323 {
1324 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1325 if (msg->unique_id == hw_id) break;
1326 ptr = list_next( &input->msg_list, ptr );
1327 }
1328 if (!ptr) ptr = list_head( &input->msg_list );
1329 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1330 }
1331
1332 if (ptr == list_head( &input->msg_list ))
1333 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1334 else
1335 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1336
1337 while (ptr)
1338 {
1339 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1340 struct hardware_msg_data *data = msg->data;
1341
1342 ptr = list_next( &input->msg_list, ptr );
1343 win = find_hardware_message_window( input, msg, data, &msg_code );
1344 if (!win || !(win_thread = get_window_thread( win )))
1345 {
1346 /* no window at all, remove it */
1347 update_input_key_state( input, msg );
1348 list_remove( &msg->entry );
1349 free_message( msg );
1350 continue;
1351 }
1352 if (win_thread != thread)
1353 {
1354 if (win_thread->queue->input == input)
1355 {
1356 /* wake the other thread */
1357 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1358 got_one = 1;
1359 }
1360 else
1361 {
1362 /* for another thread input, drop it */
1363 update_input_key_state( input, msg );
1364 list_remove( &msg->entry );
1365 free_message( msg );
1366 }
1367 release_object( win_thread );
1368 continue;
1369 }
1370 release_object( win_thread );
1371
1372 /* if we already got a message for another thread, or if it doesn't
1373 * match the filter we skip it */
1374 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1375 {
1376 clear_bits &= ~get_hardware_msg_bit( msg );
1377 continue;
1378 }
1379 /* now we can return it */
1380 if (!msg->unique_id) msg->unique_id = get_unique_id();
1381 reply->type = MSG_HARDWARE;
1382 reply->win = win;
1383 reply->msg = msg_code;
1384 reply->wparam = msg->wparam;
1385 reply->lparam = msg->lparam;
1386 reply->time = msg->time;
1387
1388 data->hw_id = msg->unique_id;
1389 set_reply_data( msg->data, msg->data_size );
1390 return 1;
1391 }
1392 /* nothing found, clear the hardware queue bits */
1393 clear_queue_bits( thread->queue, clear_bits );
1394 return 0;
1395 }
1396
1397 /* increment (or decrement if 'incr' is negative) the queue paint count */
1398 void inc_queue_paint_count( struct thread *thread, int incr )
1399 {
1400 struct msg_queue *queue = thread->queue;
1401
1402 assert( queue );
1403
1404 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1405
1406 if (queue->paint_count)
1407 set_queue_bits( queue, QS_PAINT );
1408 else
1409 clear_queue_bits( queue, QS_PAINT );
1410 }
1411
1412
1413 /* remove all messages and timers belonging to a certain window */
1414 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1415 {
1416 struct msg_queue *queue = thread->queue;
1417 struct list *ptr;
1418 int i;
1419
1420 if (!queue) return;
1421
1422 /* remove timers */
1423
1424 ptr = list_head( &queue->pending_timers );
1425 while (ptr)
1426 {
1427 struct list *next = list_next( &queue->pending_timers, ptr );
1428 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1429 if (timer->win == win) free_timer( queue, timer );
1430 ptr = next;
1431 }
1432 ptr = list_head( &queue->expired_timers );
1433 while (ptr)
1434 {
1435 struct list *next = list_next( &queue->expired_timers, ptr );
1436 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1437 if (timer->win == win) free_timer( queue, timer );
1438 ptr = next;
1439 }
1440
1441 /* remove messages */
1442 for (i = 0; i < NB_MSG_KINDS; i++)
1443 {
1444 struct list *ptr, *next;
1445
1446 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1447 {
1448 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1449 if (msg->win == win) remove_queue_message( queue, msg, i );
1450 }
1451 }
1452
1453 thread_input_cleanup_window( queue, win );
1454 }
1455
1456 /* post a message to a window; used by socket handling */
1457 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1458 {
1459 struct message *msg;
1460 struct thread *thread = get_window_thread( win );
1461
1462 if (!thread) return;
1463
1464 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1465 {
1466 msg->type = MSG_POSTED;
1467 msg->win = get_user_full_handle( win );
1468 msg->msg = message;
1469 msg->wparam = wparam;
1470 msg->lparam = lparam;
1471 msg->time = get_tick_count();
1472 msg->result = NULL;
1473 msg->data = NULL;
1474 msg->data_size = 0;
1475
1476 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1477 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1478 }
1479 release_object( thread );
1480 }
1481
1482 /* post a win event */
1483 void post_win_event( struct thread *thread, unsigned int event,
1484 user_handle_t win, unsigned int object_id,
1485 unsigned int child_id, client_ptr_t hook_proc,
1486 const WCHAR *module, data_size_t module_size,
1487 user_handle_t hook)
1488 {
1489 struct message *msg;
1490
1491 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1492 {
1493 struct winevent_msg_data *data;
1494
1495 msg->type = MSG_WINEVENT;
1496 msg->win = get_user_full_handle( win );
1497 msg->msg = event;
1498 msg->wparam = object_id;
1499 msg->lparam = child_id;
1500 msg->time = get_tick_count();
1501 msg->result = NULL;
1502
1503 if ((data = malloc( sizeof(*data) + module_size )))
1504 {
1505 data->hook = hook;
1506 data->tid = get_thread_id( current );
1507 data->hook_proc = hook_proc;
1508 memcpy( data + 1, module, module_size );
1509
1510 msg->data = data;
1511 msg->data_size = sizeof(*data) + module_size;
1512
1513 if (debug_level > 1)
1514 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1515 get_thread_id(thread), event, win, object_id, child_id );
1516 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1517 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1518 }
1519 else
1520 free( msg );
1521 }
1522 }
1523
1524
1525 /* check if the thread owning the window is hung */
1526 DECL_HANDLER(is_window_hung)
1527 {
1528 struct thread *thread;
1529
1530 thread = get_window_thread( req->win );
1531 if (thread)
1532 {
1533 reply->is_hung = is_queue_hung( thread->queue );
1534 release_object( thread );
1535 }
1536 else reply->is_hung = 0;
1537 }
1538
1539
1540 /* get the message queue of the current thread */
1541 DECL_HANDLER(get_msg_queue)
1542 {
1543 struct msg_queue *queue = get_current_queue();
1544
1545 reply->handle = 0;
1546 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1547 }
1548
1549
1550 /* set the file descriptor associated to the current thread queue */
1551 DECL_HANDLER(set_queue_fd)
1552 {
1553 struct msg_queue *queue = get_current_queue();
1554 struct file *file;
1555 int unix_fd;
1556
1557 if (queue->fd) /* fd can only be set once */
1558 {
1559 set_error( STATUS_ACCESS_DENIED );
1560 return;
1561 }
1562 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1563
1564 if ((unix_fd = get_file_unix_fd( file )) != -1)
1565 {
1566 if ((unix_fd = dup( unix_fd )) != -1)
1567 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1568 else
1569 file_set_error();
1570 }
1571 release_object( file );
1572 }
1573
1574
1575 /* set the current message queue wakeup mask */
1576 DECL_HANDLER(set_queue_mask)
1577 {
1578 struct msg_queue *queue = get_current_queue();
1579
1580 if (queue)
1581 {
1582 queue->wake_mask = req->wake_mask;
1583 queue->changed_mask = req->changed_mask;
1584 reply->wake_bits = queue->wake_bits;
1585 reply->changed_bits = queue->changed_bits;
1586 if (is_signaled( queue ))
1587 {
1588 /* if skip wait is set, do what would have been done in the subsequent wait */
1589 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1590 else wake_up( &queue->obj, 0 );
1591 }
1592 }
1593 }
1594
1595
1596 /* get the current message queue status */
1597 DECL_HANDLER(get_queue_status)
1598 {
1599 struct msg_queue *queue = current->queue;
1600 if (queue)
1601 {
1602 reply->wake_bits = queue->wake_bits;
1603 reply->changed_bits = queue->changed_bits;
1604 if (req->clear) queue->changed_bits = 0;
1605 }
1606 else reply->wake_bits = reply->changed_bits = 0;
1607 }
1608
1609
1610 /* send a message to a thread queue */
1611 DECL_HANDLER(send_message)
1612 {
1613 struct message *msg;
1614 struct msg_queue *send_queue = get_current_queue();
1615 struct msg_queue *recv_queue = NULL;
1616 struct thread *thread = NULL;
1617
1618 if (!(thread = get_thread_from_id( req->id ))) return;
1619
1620 if (!(recv_queue = thread->queue))
1621 {
1622 set_error( STATUS_INVALID_PARAMETER );
1623 release_object( thread );
1624 return;
1625 }
1626 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1627 {
1628 set_error( STATUS_TIMEOUT );
1629 release_object( thread );
1630 return;
1631 }
1632
1633 if ((msg = mem_alloc( sizeof(*msg) )))
1634 {
1635 msg->type = req->type;
1636 msg->win = get_user_full_handle( req->win );
1637 msg->msg = req->msg;
1638 msg->wparam = req->wparam;
1639 msg->lparam = req->lparam;
1640 msg->time = get_tick_count();
1641 msg->result = NULL;
1642 msg->data = NULL;
1643 msg->data_size = get_req_data_size();
1644
1645 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1646 {
1647 free( msg );
1648 release_object( thread );
1649 return;
1650 }
1651
1652 switch(msg->type)
1653 {
1654 case MSG_OTHER_PROCESS:
1655 case MSG_ASCII:
1656 case MSG_UNICODE:
1657 case MSG_CALLBACK:
1658 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1659 {
1660 free_message( msg );
1661 break;
1662 }
1663 /* fall through */
1664 case MSG_NOTIFY:
1665 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1666 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1667 break;
1668 case MSG_POSTED:
1669 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1670 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1671 break;
1672 case MSG_HARDWARE: /* should use send_hardware_message instead */
1673 case MSG_CALLBACK_RESULT: /* cannot send this one */
1674 default:
1675 set_error( STATUS_INVALID_PARAMETER );
1676 free( msg );
1677 break;
1678 }
1679 }
1680 release_object( thread );
1681 }
1682
1683 /* send a hardware message to a thread queue */
1684 DECL_HANDLER(send_hardware_message)
1685 {
1686 struct message *msg;
1687 struct msg_queue *recv_queue = NULL;
1688 struct thread *thread = NULL;
1689 struct hardware_msg_data *data;
1690
1691 if (req->id)
1692 {
1693 if (!(thread = get_thread_from_id( req->id ))) return;
1694 }
1695
1696 if (thread && !(recv_queue = thread->queue))
1697 {
1698 set_error( STATUS_INVALID_PARAMETER );
1699 release_object( thread );
1700 return;
1701 }
1702
1703 if (!(data = mem_alloc( sizeof(*data) )))
1704 {
1705 if (thread) release_object( thread );
1706 return;
1707 }
1708 memset( data, 0, sizeof(*data) );
1709 data->x = req->x;
1710 data->y = req->y;
1711 data->info = req->info;
1712
1713 if ((msg = mem_alloc( sizeof(*msg) )))
1714 {
1715 msg->type = MSG_HARDWARE;
1716 msg->win = get_user_full_handle( req->win );
1717 msg->msg = req->msg;
1718 msg->wparam = req->wparam;
1719 msg->lparam = req->lparam;
1720 msg->time = req->time;
1721 msg->result = NULL;
1722 msg->data = data;
1723 msg->data_size = sizeof(*data);
1724 queue_hardware_message( recv_queue, msg, data );
1725 }
1726 else free( data );
1727
1728 if (thread) release_object( thread );
1729 }
1730
1731 /* post a quit message to the current queue */
1732 DECL_HANDLER(post_quit_message)
1733 {
1734 struct msg_queue *queue = get_current_queue();
1735
1736 if (!queue)
1737 return;
1738
1739 queue->quit_message = 1;
1740 queue->exit_code = req->exit_code;
1741 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1742 }
1743
1744 /* get a message from the current queue */
1745 DECL_HANDLER(get_message)
1746 {
1747 struct timer *timer;
1748 struct list *ptr;
1749 struct msg_queue *queue = get_current_queue();
1750 user_handle_t get_win = get_user_full_handle( req->get_win );
1751 unsigned int filter = req->flags >> 16;
1752
1753 reply->active_hooks = get_active_hooks();
1754
1755 if (!queue) return;
1756 queue->last_get_msg = current_time;
1757 if (!filter) filter = QS_ALLINPUT;
1758
1759 /* first check for sent messages */
1760 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1761 {
1762 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1763 receive_message( queue, msg, reply );
1764 return;
1765 }
1766
1767 /* clear changed bits so we can wait on them if we don't find a message */
1768 if (filter & QS_POSTMESSAGE)
1769 {
1770 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1771 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1772 }
1773 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1774 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1775
1776 /* then check for posted messages */
1777 if ((filter & QS_POSTMESSAGE) &&
1778 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1779 return;
1780
1781 /* only check for quit messages if not posted messages pending.
1782 * note: the quit message isn't filtered */
1783 if (get_quit_message( queue, req->flags, reply ))
1784 return;
1785
1786 /* then check for any raw hardware message */
1787 if ((filter & QS_INPUT) &&
1788 filter_contains_hw_range( req->get_first, req->get_last ) &&
1789 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1790 return;
1791
1792 /* now check for WM_PAINT */
1793 if ((filter & QS_PAINT) &&
1794 queue->paint_count &&
1795 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1796 (reply->win = find_window_to_repaint( get_win, current )))
1797 {
1798 reply->type = MSG_POSTED;
1799 reply->msg = WM_PAINT;
1800 reply->wparam = 0;
1801 reply->lparam = 0;
1802 reply->time = get_tick_count();
1803 return;
1804 }
1805
1806 /* now check for timer */
1807 if ((filter & QS_TIMER) &&
1808 (timer = find_expired_timer( queue, get_win, req->get_first,
1809 req->get_last, (req->flags & PM_REMOVE) )))
1810 {
1811 reply->type = MSG_POSTED;
1812 reply->win = timer->win;
1813 reply->msg = timer->msg;
1814 reply->wparam = timer->id;
1815 reply->lparam = timer->lparam;
1816 reply->time = get_tick_count();
1817 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
1818 set_event( current->process->idle_event );
1819 return;
1820 }
1821
1822 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
1823 queue->wake_mask = req->wake_mask;
1824 queue->changed_mask = req->changed_mask;
1825 set_error( STATUS_PENDING ); /* FIXME */
1826 }
1827
1828
1829 /* reply to a sent message */
1830 DECL_HANDLER(reply_message)
1831 {
1832 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1833 else if (current->queue->recv_result)
1834 reply_message( current->queue, req->result, 0, req->remove,
1835 get_req_data(), get_req_data_size() );
1836 }
1837
1838
1839 /* accept the current hardware message */
1840 DECL_HANDLER(accept_hardware_message)
1841 {
1842 if (current->queue)
1843 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1844 else
1845 set_error( STATUS_ACCESS_DENIED );
1846 }
1847
1848
1849 /* retrieve the reply for the last message sent */
1850 DECL_HANDLER(get_message_reply)
1851 {
1852 struct message_result *result;
1853 struct list *entry;
1854 struct msg_queue *queue = current->queue;
1855
1856 if (queue)
1857 {
1858 set_error( STATUS_PENDING );
1859 reply->result = 0;
1860
1861 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1862
1863 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1864 if (result->replied || req->cancel)
1865 {
1866 if (result->replied)
1867 {
1868 reply->result = result->result;
1869 set_error( result->error );
1870 if (result->data)
1871 {
1872 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1873 set_reply_data_ptr( result->data, data_len );
1874 result->data = NULL;
1875 result->data_size = 0;
1876 }
1877 }
1878 remove_result_from_sender( result );
1879
1880 entry = list_head( &queue->send_result );
1881 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1882 else
1883 {
1884 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1885 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1886 }
1887 }
1888 }
1889 else set_error( STATUS_ACCESS_DENIED );
1890 }
1891
1892
1893 /* set a window timer */
1894 DECL_HANDLER(set_win_timer)
1895 {
1896 struct timer *timer;
1897 struct msg_queue *queue;
1898 struct thread *thread = NULL;
1899 user_handle_t win = 0;
1900 lparam_t id = req->id;
1901
1902 if (req->win)
1903 {
1904 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1905 {
1906 set_error( STATUS_INVALID_HANDLE );
1907 return;
1908 }
1909 if (thread->process != current->process)
1910 {
1911 release_object( thread );
1912 set_error( STATUS_ACCESS_DENIED );
1913 return;
1914 }
1915 queue = thread->queue;
1916 /* remove it if it existed already */
1917 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1918 }
1919 else
1920 {
1921 queue = get_current_queue();
1922 /* look for a timer with this id */
1923 if (id && (timer = find_timer( queue, 0, req->msg, id )))
1924 {
1925 /* free and reuse id */
1926 free_timer( queue, timer );
1927 }
1928 else
1929 {
1930 /* find a free id for it */
1931 do
1932 {
1933 id = queue->next_timer_id;
1934 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
1935 }
1936 while (find_timer( queue, 0, req->msg, id ));
1937 }
1938 }
1939
1940 if ((timer = set_timer( queue, req->rate )))
1941 {
1942 timer->win = win;
1943 timer->msg = req->msg;
1944 timer->id = id;
1945 timer->lparam = req->lparam;
1946 reply->id = id;
1947 }
1948 if (thread) release_object( thread );
1949 }
1950
1951 /* kill a window timer */
1952 DECL_HANDLER(kill_win_timer)
1953 {
1954 struct timer *timer;
1955 struct thread *thread;
1956 user_handle_t win = 0;
1957
1958 if (req->win)
1959 {
1960 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1961 {
1962 set_error( STATUS_INVALID_HANDLE );
1963 return;
1964 }
1965 if (thread->process != current->process)
1966 {
1967 release_object( thread );
1968 set_error( STATUS_ACCESS_DENIED );
1969 return;
1970 }
1971 }
1972 else thread = (struct thread *)grab_object( current );
1973
1974 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1975 free_timer( thread->queue, timer );
1976 else
1977 set_error( STATUS_INVALID_PARAMETER );
1978
1979 release_object( thread );
1980 }
1981
1982
1983 /* attach (or detach) thread inputs */
1984 DECL_HANDLER(attach_thread_input)
1985 {
1986 struct thread *thread_from = get_thread_from_id( req->tid_from );
1987 struct thread *thread_to = get_thread_from_id( req->tid_to );
1988
1989 if (!thread_from || !thread_to)
1990 {
1991 if (thread_from) release_object( thread_from );
1992 if (thread_to) release_object( thread_to );
1993 return;
1994 }
1995 if (thread_from != thread_to)
1996 {
1997 if (req->attach) attach_thread_input( thread_from, thread_to );
1998 else
1999 {
2000 if (thread_from->queue && thread_to->queue &&
2001 thread_from->queue->input == thread_to->queue->input)
2002 detach_thread_input( thread_from );
2003 else
2004 set_error( STATUS_ACCESS_DENIED );
2005 }
2006 }
2007 else set_error( STATUS_ACCESS_DENIED );
2008 release_object( thread_from );
2009 release_object( thread_to );
2010 }
2011
2012
2013 /* get thread input data */
2014 DECL_HANDLER(get_thread_input)
2015 {
2016 struct thread *thread = NULL;
2017 struct thread_input *input;
2018
2019 if (req->tid)
2020 {
2021 if (!(thread = get_thread_from_id( req->tid ))) return;
2022 input = thread->queue ? thread->queue->input : NULL;
2023 }
2024 else input = foreground_input; /* get the foreground thread info */
2025
2026 if (input)
2027 {
2028 reply->focus = input->focus;
2029 reply->capture = input->capture;
2030 reply->active = input->active;
2031 reply->menu_owner = input->menu_owner;
2032 reply->move_size = input->move_size;
2033 reply->caret = input->caret;
2034 reply->rect = input->caret_rect;
2035 }
2036 else
2037 {
2038 reply->focus = 0;
2039 reply->capture = 0;
2040 reply->active = 0;
2041 reply->menu_owner = 0;
2042 reply->move_size = 0;
2043 reply->caret = 0;
2044 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2045 }
2046 /* foreground window is active window of foreground thread */
2047 reply->foreground = foreground_input ? foreground_input->active : 0;
2048 if (thread) release_object( thread );
2049 }
2050
2051
2052 /* retrieve queue keyboard state for a given thread */
2053 DECL_HANDLER(get_key_state)
2054 {
2055 struct thread *thread;
2056 struct thread_input *input;
2057
2058 if (!(thread = get_thread_from_id( req->tid ))) return;
2059 input = thread->queue ? thread->queue->input : NULL;
2060 if (input)
2061 {
2062 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2063 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2064 }
2065 release_object( thread );
2066 }
2067
2068
2069 /* set queue keyboard state for a given thread */
2070 DECL_HANDLER(set_key_state)
2071 {
2072 struct thread *thread = NULL;
2073 struct thread_input *input;
2074
2075 if (!(thread = get_thread_from_id( req->tid ))) return;
2076 input = thread->queue ? thread->queue->input : NULL;
2077 if (input)
2078 {
2079 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2080 if (size) memcpy( input->keystate, get_req_data(), size );
2081 }
2082 release_object( thread );
2083 }
2084
2085
2086 /* set the system foreground window */
2087 DECL_HANDLER(set_foreground_window)
2088 {
2089 struct thread *thread;
2090 struct msg_queue *queue = get_current_queue();
2091
2092 reply->previous = foreground_input ? foreground_input->active : 0;
2093 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2094 reply->send_msg_new = FALSE;
2095
2096 if (is_top_level_window( req->handle ) &&
2097 ((thread = get_window_thread( req->handle ))))
2098 {
2099 foreground_input = thread->queue->input;
2100 reply->send_msg_new = (foreground_input != queue->input);
2101 release_object( thread );
2102 }
2103 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2104 }
2105
2106
2107 /* set the current thread focus window */
2108 DECL_HANDLER(set_focus_window)
2109 {
2110 struct msg_queue *queue = get_current_queue();
2111
2112 reply->previous = 0;
2113 if (queue && check_queue_input_window( queue, req->handle ))
2114 {
2115 reply->previous = queue->input->focus;
2116 queue->input->focus = get_user_full_handle( req->handle );
2117 }
2118 }
2119
2120
2121 /* set the current thread active window */
2122 DECL_HANDLER(set_active_window)
2123 {
2124 struct msg_queue *queue = get_current_queue();
2125
2126 reply->previous = 0;
2127 if (queue && check_queue_input_window( queue, req->handle ))
2128 {
2129 if (!req->handle || make_window_active( req->handle ))
2130 {
2131 reply->previous = queue->input->active;
2132 queue->input->active = get_user_full_handle( req->handle );
2133 }
2134 else set_error( STATUS_INVALID_HANDLE );
2135 }
2136 }
2137
2138
2139 /* set the current thread capture window */
2140 DECL_HANDLER(set_capture_window)
2141 {
2142 struct msg_queue *queue = get_current_queue();
2143
2144 reply->previous = reply->full_handle = 0;
2145 if (queue && check_queue_input_window( queue, req->handle ))
2146 {
2147 struct thread_input *input = queue->input;
2148
2149 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
2150 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
2151 {
2152 set_error(STATUS_ACCESS_DENIED);
2153 return;
2154 }
2155 reply->previous = input->capture;
2156 input->capture = get_user_full_handle( req->handle );
2157 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2158 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2159 reply->full_handle = input->capture;
2160 }
2161 }
2162
2163
2164 /* Set the current thread caret window */
2165 DECL_HANDLER(set_caret_window)
2166 {
2167 struct msg_queue *queue = get_current_queue();
2168
2169 reply->previous = 0;
2170 if (queue && check_queue_input_window( queue, req->handle ))
2171 {
2172 struct thread_input *input = queue->input;
2173
2174 reply->previous = input->caret;
2175 reply->old_rect = input->caret_rect;
2176 reply->old_hide = input->caret_hide;
2177 reply->old_state = input->caret_state;
2178
2179 set_caret_window( input, get_user_full_handle(req->handle) );
2180 input->caret_rect.right = input->caret_rect.left + req->width;
2181 input->caret_rect.bottom = input->caret_rect.top + req->height;
2182 }
2183 }
2184
2185
2186 /* Set the current thread caret information */
2187 DECL_HANDLER(set_caret_info)
2188 {
2189 struct msg_queue *queue = get_current_queue();
2190 struct thread_input *input;
2191
2192 if (!queue) return;
2193 input = queue->input;
2194 reply->full_handle = input->caret;
2195 reply->old_rect = input->caret_rect;
2196 reply->old_hide = input->caret_hide;
2197 reply->old_state = input->caret_state;
2198
2199 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2200 {
2201 set_error( STATUS_ACCESS_DENIED );
2202 return;
2203 }
2204 if (req->flags & SET_CARET_POS)
2205 {
2206 input->caret_rect.right += req->x - input->caret_rect.left;
2207 input->caret_rect.bottom += req->y - input->caret_rect.top;
2208 input->caret_rect.left = req->x;
2209 input->caret_rect.top = req->y;
2210 }
2211 if (req->flags & SET_CARET_HIDE)
2212 {
2213 input->caret_hide += req->hide;
2214 if (input->caret_hide < 0) input->caret_hide = 0;
2215 }
2216 if (req->flags & SET_CARET_STATE)
2217 {
2218 if (req->state == -1) input->caret_state = !input->caret_state;
2219 else input->caret_state = !!req->state;
2220 }
2221 }
2222
2223
2224 /* get the time of the last input event */
2225 DECL_HANDLER(get_last_input_time)
2226 {
2227 reply->time = last_input_time;
2228 }
Windows API implementation