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server: Don't set the idle event when a queue is destroyed, instead return success...
[wine/multimedia.git] / server / queue.c
blobb7cbc6415046db8d1878057ded10a956f457ef97
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 if (!thread->process->queue)
284 thread->process->queue = (struct msg_queue *)grab_object( queue );
285 }
286 release_object( input );
287 return queue;
288 }
289
290 /* free the message queue of a thread at thread exit */
291 void free_msg_queue( struct thread *thread )
292 {
293 struct process *process = thread->process;
294
295 remove_thread_hooks( thread );
296 if (!thread->queue) return;
297 if (process->queue == thread->queue) /* is it the process main queue? */
298 {
299 release_object( process->queue );
300 process->queue = NULL;
301 }
302 release_object( thread->queue );
303 thread->queue = NULL;
304 }
305
306 /* get the hook table for a given thread */
307 struct hook_table *get_queue_hooks( struct thread *thread )
308 {
309 if (!thread->queue) return NULL;
310 return thread->queue->hooks;
311 }
312
313 /* set the hook table for a given thread, allocating the queue if needed */
314 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
315 {
316 struct msg_queue *queue = thread->queue;
317 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
318 if (queue->hooks) release_object( queue->hooks );
319 queue->hooks = hooks;
320 }
321
322 /* check the queue status */
323 static inline int is_signaled( struct msg_queue *queue )
324 {
325 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
326 }
327
328 /* set some queue bits */
329 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
330 {
331 queue->wake_bits |= bits;
332 queue->changed_bits |= bits;
333 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
334 }
335
336 /* clear some queue bits */
337 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
338 {
339 queue->wake_bits &= ~bits;
340 queue->changed_bits &= ~bits;
341 }
342
343 /* check whether msg is a keyboard message */
344 static inline int is_keyboard_msg( struct message *msg )
345 {
346 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
347 }
348
349 /* check if message is matched by the filter */
350 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
351 {
352 return (msg >= first && msg <= last);
353 }
354
355 /* check whether a message filter contains at least one potential hardware message */
356 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
357 {
358 /* hardware message ranges are (in numerical order):
359 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
360 * WM_KEYFIRST .. WM_KEYLAST
361 * WM_MOUSEFIRST .. WM_MOUSELAST
362 */
363 if (last < WM_NCMOUSEFIRST) return 0;
364 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
365 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
366 if (first > WM_MOUSELAST) return 0;
367 return 1;
368 }
369
370 /* get the QS_* bit corresponding to a given hardware message */
371 static inline int get_hardware_msg_bit( struct message *msg )
372 {
373 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
374 if (is_keyboard_msg( msg )) return QS_KEY;
375 return QS_MOUSEBUTTON;
376 }
377
378 /* get the current thread queue, creating it if needed */
379 static inline struct msg_queue *get_current_queue(void)
380 {
381 struct msg_queue *queue = current->queue;
382 if (!queue) queue = create_msg_queue( current, NULL );
383 return queue;
384 }
385
386 /* get a (pseudo-)unique id to tag hardware messages */
387 static inline unsigned int get_unique_id(void)
388 {
389 static unsigned int id;
390 if (!++id) id = 1; /* avoid an id of 0 */
391 return id;
392 }
393
394 /* try to merge a message with the last in the list; return 1 if successful */
395 static int merge_message( struct thread_input *input, const struct message *msg )
396 {
397 struct message *prev;
398 struct list *ptr = list_tail( &input->msg_list );
399
400 if (!ptr) return 0;
401 prev = LIST_ENTRY( ptr, struct message, entry );
402 if (prev->result) return 0;
403 if (prev->win && msg->win && prev->win != msg->win) return 0;
404 if (prev->msg != msg->msg) return 0;
405 if (prev->type != msg->type) return 0;
406 /* now we can merge it */
407 prev->wparam = msg->wparam;
408 prev->lparam = msg->lparam;
409 prev->time = msg->time;
410 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
411 {
412 struct hardware_msg_data *prev_data = prev->data;
413 struct hardware_msg_data *msg_data = msg->data;
414 prev_data->x = msg_data->x;
415 prev_data->y = msg_data->y;
416 prev_data->info = msg_data->info;
417 }
418 return 1;
419 }
420
421 /* free a result structure */
422 static void free_result( struct message_result *result )
423 {
424 if (result->timeout) remove_timeout_user( result->timeout );
425 free( result->data );
426 if (result->callback_msg) free_message( result->callback_msg );
427 free( result );
428 }
429
430 /* remove the result from the sender list it is on */
431 static inline void remove_result_from_sender( struct message_result *result )
432 {
433 assert( result->sender );
434
435 list_remove( &result->sender_entry );
436 result->sender = NULL;
437 if (!result->receiver) free_result( result );
438 }
439
440 /* store the message result in the appropriate structure */
441 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
442 {
443 res->result = result;
444 res->error = error;
445 res->replied = 1;
446 if (res->timeout)
447 {
448 remove_timeout_user( res->timeout );
449 res->timeout = NULL;
450 }
451 if (res->sender)
452 {
453 if (res->callback_msg)
454 {
455 /* queue the callback message in the sender queue */
456 struct callback_msg_data *data = res->callback_msg->data;
457 data->result = result;
458 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
459 set_queue_bits( res->sender, QS_SENDMESSAGE );
460 res->callback_msg = NULL;
461 remove_result_from_sender( res );
462 }
463 else
464 {
465 /* wake sender queue if waiting on this result */
466 if (list_head(&res->sender->send_result) == &res->sender_entry)
467 set_queue_bits( res->sender, QS_SMRESULT );
468 }
469 }
470
471 }
472
473 /* free a message when deleting a queue or window */
474 static void free_message( struct message *msg )
475 {
476 struct message_result *result = msg->result;
477 if (result)
478 {
479 result->msg = NULL;
480 if (result->sender)
481 {
482 result->receiver = NULL;
483 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
484 }
485 else free_result( result );
486 }
487 free( msg->data );
488 free( msg );
489 }
490
491 /* remove (and free) a message from a message list */
492 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
493 enum message_kind kind )
494 {
495 list_remove( &msg->entry );
496 switch(kind)
497 {
498 case SEND_MESSAGE:
499 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
500 break;
501 case POST_MESSAGE:
502 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
503 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
504 break;
505 }
506 free_message( msg );
507 }
508
509 /* message timed out without getting a reply */
510 static void result_timeout( void *private )
511 {
512 struct message_result *result = private;
513
514 assert( !result->replied );
515
516 result->timeout = NULL;
517
518 if (result->msg) /* not received yet */
519 {
520 struct message *msg = result->msg;
521
522 result->msg = NULL;
523 msg->result = NULL;
524 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
525 result->receiver = NULL;
526 if (!result->sender)
527 {
528 free_result( result );
529 return;
530 }
531 }
532
533 store_message_result( result, 0, STATUS_TIMEOUT );
534 }
535
536 /* allocate and fill a message result structure */
537 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
538 struct msg_queue *recv_queue,
539 struct message *msg, timeout_t timeout )
540 {
541 struct message_result *result = mem_alloc( sizeof(*result) );
542 if (result)
543 {
544 result->msg = msg;
545 result->sender = send_queue;
546 result->receiver = recv_queue;
547 result->replied = 0;
548 result->data = NULL;
549 result->data_size = 0;
550 result->timeout = NULL;
551
552 if (msg->type == MSG_CALLBACK)
553 {
554 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
555
556 if (!callback_msg)
557 {
558 free( result );
559 return NULL;
560 }
561 callback_msg->type = MSG_CALLBACK_RESULT;
562 callback_msg->win = msg->win;
563 callback_msg->msg = msg->msg;
564 callback_msg->wparam = 0;
565 callback_msg->lparam = 0;
566 callback_msg->time = get_tick_count();
567 callback_msg->result = NULL;
568 /* steal the data from the original message */
569 callback_msg->data = msg->data;
570 callback_msg->data_size = msg->data_size;
571 msg->data = NULL;
572 msg->data_size = 0;
573
574 result->callback_msg = callback_msg;
575 list_add_head( &send_queue->callback_result, &result->sender_entry );
576 }
577 else
578 {
579 result->callback_msg = NULL;
580 list_add_head( &send_queue->send_result, &result->sender_entry );
581 }
582
583 if (timeout != TIMEOUT_INFINITE)
584 result->timeout = add_timeout_user( timeout, result_timeout, result );
585 }
586 return result;
587 }
588
589 /* receive a message, removing it from the sent queue */
590 static void receive_message( struct msg_queue *queue, struct message *msg,
591 struct get_message_reply *reply )
592 {
593 struct message_result *result = msg->result;
594
595 reply->total = msg->data_size;
596 if (msg->data_size > get_reply_max_size())
597 {
598 set_error( STATUS_BUFFER_OVERFLOW );
599 return;
600 }
601 reply->type = msg->type;
602 reply->win = msg->win;
603 reply->msg = msg->msg;
604 reply->wparam = msg->wparam;
605 reply->lparam = msg->lparam;
606 reply->time = msg->time;
607
608 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
609
610 list_remove( &msg->entry );
611 /* put the result on the receiver result stack */
612 if (result)
613 {
614 result->msg = NULL;
615 result->recv_next = queue->recv_result;
616 queue->recv_result = result;
617 }
618 free( msg );
619 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
620 }
621
622 /* set the result of the current received message */
623 static void reply_message( struct msg_queue *queue, lparam_t result,
624 unsigned int error, int remove, const void *data, data_size_t len )
625 {
626 struct message_result *res = queue->recv_result;
627
628 if (remove)
629 {
630 queue->recv_result = res->recv_next;
631 res->receiver = NULL;
632 if (!res->sender) /* no one waiting for it */
633 {
634 free_result( res );
635 return;
636 }
637 }
638 if (!res->replied)
639 {
640 if (len && (res->data = memdup( data, len ))) res->data_size = len;
641 store_message_result( res, result, error );
642 }
643 }
644
645 static int match_window( user_handle_t win, user_handle_t msg_win )
646 {
647 if (!win) return 1;
648 if (win == (user_handle_t)-1) return !msg_win;
649 if (msg_win == win) return 1;
650 return is_child_window( win, msg_win );
651 }
652
653 /* retrieve a posted message */
654 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
655 unsigned int first, unsigned int last, unsigned int flags,
656 struct get_message_reply *reply )
657 {
658 struct message *msg;
659
660 /* check against the filters */
661 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
662 {
663 if (!match_window( win, msg->win )) continue;
664 if (!check_msg_filter( msg->msg, first, last )) continue;
665 goto found; /* found one */
666 }
667 return 0;
668
669 /* return it to the app */
670 found:
671 reply->total = msg->data_size;
672 if (msg->data_size > get_reply_max_size())
673 {
674 set_error( STATUS_BUFFER_OVERFLOW );
675 return 1;
676 }
677 reply->type = msg->type;
678 reply->win = msg->win;
679 reply->msg = msg->msg;
680 reply->wparam = msg->wparam;
681 reply->lparam = msg->lparam;
682 reply->time = msg->time;
683
684 if (flags & PM_REMOVE)
685 {
686 if (msg->data)
687 {
688 set_reply_data_ptr( msg->data, msg->data_size );
689 msg->data = NULL;
690 msg->data_size = 0;
691 }
692 remove_queue_message( queue, msg, POST_MESSAGE );
693 }
694 else if (msg->data) set_reply_data( msg->data, msg->data_size );
695
696 return 1;
697 }
698
699 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
700 struct get_message_reply *reply )
701 {
702 if (queue->quit_message)
703 {
704 reply->total = 0;
705 reply->type = MSG_POSTED;
706 reply->win = 0;
707 reply->msg = WM_QUIT;
708 reply->wparam = queue->exit_code;
709 reply->lparam = 0;
710 reply->time = get_tick_count();
711
712 if (flags & PM_REMOVE)
713 {
714 queue->quit_message = 0;
715 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
716 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
717 }
718 return 1;
719 }
720 else
721 return 0;
722 }
723
724 /* empty a message list and free all the messages */
725 static void empty_msg_list( struct list *list )
726 {
727 struct list *ptr;
728
729 while ((ptr = list_head( list )) != NULL)
730 {
731 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
732 list_remove( &msg->entry );
733 free_message( msg );
734 }
735 }
736
737 /* cleanup all pending results when deleting a queue */
738 static void cleanup_results( struct msg_queue *queue )
739 {
740 struct list *entry;
741
742 while ((entry = list_head( &queue->send_result )) != NULL)
743 {
744 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
745 }
746
747 while ((entry = list_head( &queue->callback_result )) != NULL)
748 {
749 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
750 }
751
752 while (queue->recv_result)
753 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
754 }
755
756 /* check if the thread owning the queue is hung (not checking for messages) */
757 static int is_queue_hung( struct msg_queue *queue )
758 {
759 struct wait_queue_entry *entry;
760
761 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
762 return 0; /* less than 5 seconds since last get message -> not hung */
763
764 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
765 {
766 if (entry->thread->queue == queue)
767 return 0; /* thread is waiting on queue -> not hung */
768 }
769 return 1;
770 }
771
772 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
773 {
774 struct msg_queue *queue = (struct msg_queue *)obj;
775 struct process *process = entry->thread->process;
776
777 /* a thread can only wait on its own queue */
778 if (entry->thread->queue != queue)
779 {
780 set_error( STATUS_ACCESS_DENIED );
781 return 0;
782 }
783 /* if waiting on the main process queue, set the idle event */
784 if (process->queue == queue)
785 {
786 if (process->idle_event) set_event( process->idle_event );
787 }
788 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
789 set_fd_events( queue->fd, POLLIN );
790 add_queue( obj, entry );
791 return 1;
792 }
793
794 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
795 {
796 struct msg_queue *queue = (struct msg_queue *)obj;
797 struct process *process = entry->thread->process;
798
799 remove_queue( obj, entry );
800 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
801 set_fd_events( queue->fd, 0 );
802
803 assert( entry->thread->queue == queue );
804
805 /* if waiting on the main process queue, reset the idle event */
806 if (process->queue == queue)
807 {
808 if (process->idle_event) reset_event( process->idle_event );
809 }
810 }
811
812 static void msg_queue_dump( struct object *obj, int verbose )
813 {
814 struct msg_queue *queue = (struct msg_queue *)obj;
815 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
816 queue->wake_bits, queue->wake_mask );
817 }
818
819 static int msg_queue_signaled( struct object *obj, struct thread *thread )
820 {
821 struct msg_queue *queue = (struct msg_queue *)obj;
822 int ret = 0;
823
824 if (queue->fd)
825 {
826 if ((ret = check_fd_events( queue->fd, POLLIN )))
827 /* stop waiting on select() if we are signaled */
828 set_fd_events( queue->fd, 0 );
829 else if (!list_empty( &obj->wait_queue ))
830 /* restart waiting on poll() if we are no longer signaled */
831 set_fd_events( queue->fd, POLLIN );
832 }
833 return ret || is_signaled( queue );
834 }
835
836 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
837 {
838 struct msg_queue *queue = (struct msg_queue *)obj;
839 queue->wake_mask = 0;
840 queue->changed_mask = 0;
841 return 0; /* Not abandoned */
842 }
843
844 static void msg_queue_destroy( struct object *obj )
845 {
846 struct msg_queue *queue = (struct msg_queue *)obj;
847 struct list *ptr;
848 int i;
849
850 cleanup_results( queue );
851 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
852
853 while ((ptr = list_head( &queue->pending_timers )))
854 {
855 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
856 list_remove( &timer->entry );
857 free( timer );
858 }
859 while ((ptr = list_head( &queue->expired_timers )))
860 {
861 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
862 list_remove( &timer->entry );
863 free( timer );
864 }
865 if (queue->timeout) remove_timeout_user( queue->timeout );
866 if (queue->input) release_object( queue->input );
867 if (queue->hooks) release_object( queue->hooks );
868 if (queue->fd) release_object( queue->fd );
869 }
870
871 static void msg_queue_poll_event( struct fd *fd, int event )
872 {
873 struct msg_queue *queue = get_fd_user( fd );
874 assert( queue->obj.ops == &msg_queue_ops );
875
876 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
877 else set_fd_events( queue->fd, 0 );
878 wake_up( &queue->obj, 0 );
879 }
880
881 static void thread_input_dump( struct object *obj, int verbose )
882 {
883 struct thread_input *input = (struct thread_input *)obj;
884 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
885 input->focus, input->capture, input->active );
886 }
887
888 static void thread_input_destroy( struct object *obj )
889 {
890 struct thread_input *input = (struct thread_input *)obj;
891
892 if (foreground_input == input) foreground_input = NULL;
893 empty_msg_list( &input->msg_list );
894 if (input->desktop) release_object( input->desktop );
895 }
896
897 /* fix the thread input data when a window is destroyed */
898 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
899 {
900 struct thread_input *input = queue->input;
901
902 if (window == input->focus) input->focus = 0;
903 if (window == input->capture) input->capture = 0;
904 if (window == input->active) input->active = 0;
905 if (window == input->menu_owner) input->menu_owner = 0;
906 if (window == input->move_size) input->move_size = 0;
907 if (window == input->caret) set_caret_window( input, 0 );
908 }
909
910 /* check if the specified window can be set in the input data of a given queue */
911 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
912 {
913 struct thread *thread;
914 int ret = 0;
915
916 if (!window) return 1; /* we can always clear the data */
917
918 if ((thread = get_window_thread( window )))
919 {
920 ret = (queue->input == thread->queue->input);
921 if (!ret) set_error( STATUS_ACCESS_DENIED );
922 release_object( thread );
923 }
924 else set_error( STATUS_INVALID_HANDLE );
925
926 return ret;
927 }
928
929 /* make sure the specified thread has a queue */
930 int init_thread_queue( struct thread *thread )
931 {
932 if (thread->queue) return 1;
933 return (create_msg_queue( thread, NULL ) != NULL);
934 }
935
936 /* attach two thread input data structures */
937 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
938 {
939 struct desktop *desktop;
940 struct thread_input *input;
941
942 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
943 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
944 input = (struct thread_input *)grab_object( thread_to->queue->input );
945 if (input->desktop != desktop)
946 {
947 set_error( STATUS_ACCESS_DENIED );
948 release_object( input );
949 release_object( desktop );
950 return 0;
951 }
952 release_object( desktop );
953
954 if (thread_from->queue)
955 {
956 release_thread_input( thread_from );
957 thread_from->queue->input = input;
958 }
959 else
960 {
961 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
962 }
963 memset( input->keystate, 0, sizeof(input->keystate) );
964 return 1;
965 }
966
967 /* detach two thread input data structures */
968 void detach_thread_input( struct thread *thread_from )
969 {
970 struct thread_input *input;
971
972 if ((input = create_thread_input( thread_from )))
973 {
974 release_thread_input( thread_from );
975 thread_from->queue->input = input;
976 }
977 }
978
979
980 /* set the next timer to expire */
981 static void set_next_timer( struct msg_queue *queue )
982 {
983 struct list *ptr;
984
985 if (queue->timeout)
986 {
987 remove_timeout_user( queue->timeout );
988 queue->timeout = NULL;
989 }
990 if ((ptr = list_head( &queue->pending_timers )))
991 {
992 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
993 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
994 }
995 /* set/clear QS_TIMER bit */
996 if (list_empty( &queue->expired_timers ))
997 clear_queue_bits( queue, QS_TIMER );
998 else
999 set_queue_bits( queue, QS_TIMER );
1000 }
1001
1002 /* find a timer from its window and id */
1003 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1004 unsigned int msg, lparam_t id )
1005 {
1006 struct list *ptr;
1007
1008 /* we need to search both lists */
1009
1010 LIST_FOR_EACH( ptr, &queue->pending_timers )
1011 {
1012 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1013 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1014 }
1015 LIST_FOR_EACH( ptr, &queue->expired_timers )
1016 {
1017 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1018 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1019 }
1020 return NULL;
1021 }
1022
1023 /* callback for the next timer expiration */
1024 static void timer_callback( void *private )
1025 {
1026 struct msg_queue *queue = private;
1027 struct list *ptr;
1028
1029 queue->timeout = NULL;
1030 /* move on to the next timer */
1031 ptr = list_head( &queue->pending_timers );
1032 list_remove( ptr );
1033 list_add_tail( &queue->expired_timers, ptr );
1034 set_next_timer( queue );
1035 }
1036
1037 /* link a timer at its rightful place in the queue list */
1038 static void link_timer( struct msg_queue *queue, struct timer *timer )
1039 {
1040 struct list *ptr;
1041
1042 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1043 {
1044 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1045 if (t->when >= timer->when) break;
1046 }
1047 list_add_before( ptr, &timer->entry );
1048 }
1049
1050 /* remove a timer from the queue timer list and free it */
1051 static void free_timer( struct msg_queue *queue, struct timer *timer )
1052 {
1053 list_remove( &timer->entry );
1054 free( timer );
1055 set_next_timer( queue );
1056 }
1057
1058 /* restart an expired timer */
1059 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1060 {
1061 list_remove( &timer->entry );
1062 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1063 link_timer( queue, timer );
1064 set_next_timer( queue );
1065 }
1066
1067 /* find an expired timer matching the filtering parameters */
1068 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1069 unsigned int get_first, unsigned int get_last,
1070 int remove )
1071 {
1072 struct list *ptr;
1073
1074 LIST_FOR_EACH( ptr, &queue->expired_timers )
1075 {
1076 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1077 if (win && timer->win != win) continue;
1078 if (check_msg_filter( timer->msg, get_first, get_last ))
1079 {
1080 if (remove) restart_timer( queue, timer );
1081 return timer;
1082 }
1083 }
1084 return NULL;
1085 }
1086
1087 /* add a timer */
1088 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1089 {
1090 struct timer *timer = mem_alloc( sizeof(*timer) );
1091 if (timer)
1092 {
1093 timer->rate = max( rate, 1 );
1094 timer->when = current_time + (timeout_t)timer->rate * 10000;
1095 link_timer( queue, timer );
1096 /* check if we replaced the next timer */
1097 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1098 }
1099 return timer;
1100 }
1101
1102 /* change the input key state for a given key */
1103 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1104 {
1105 if (down)
1106 {
1107 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1108 input->keystate[key] |= 0x80;
1109 }
1110 else input->keystate[key] &= ~0x80;
1111 }
1112
1113 /* update the input key state for a keyboard message */
1114 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1115 {
1116 unsigned char key;
1117 int down = 0;
1118
1119 switch (msg->msg)
1120 {
1121 case WM_LBUTTONDOWN:
1122 down = 1;
1123 /* fall through */
1124 case WM_LBUTTONUP:
1125 set_input_key_state( input, VK_LBUTTON, down );
1126 break;
1127 case WM_MBUTTONDOWN:
1128 down = 1;
1129 /* fall through */
1130 case WM_MBUTTONUP:
1131 set_input_key_state( input, VK_MBUTTON, down );
1132 break;
1133 case WM_RBUTTONDOWN:
1134 down = 1;
1135 /* fall through */
1136 case WM_RBUTTONUP:
1137 set_input_key_state( input, VK_RBUTTON, down );
1138 break;
1139 case WM_XBUTTONDOWN:
1140 down = 1;
1141 /* fall through */
1142 case WM_XBUTTONUP:
1143 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1144 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1145 break;
1146 case WM_KEYDOWN:
1147 case WM_SYSKEYDOWN:
1148 down = 1;
1149 /* fall through */
1150 case WM_KEYUP:
1151 case WM_SYSKEYUP:
1152 key = (unsigned char)msg->wparam;
1153 set_input_key_state( input, key, down );
1154 switch(key)
1155 {
1156 case VK_LCONTROL:
1157 case VK_RCONTROL:
1158 down = (input->keystate[VK_LCONTROL] | input->keystate[VK_RCONTROL]) & 0x80;
1159 set_input_key_state( input, VK_CONTROL, down );
1160 break;
1161 case VK_LMENU:
1162 case VK_RMENU:
1163 down = (input->keystate[VK_LMENU] | input->keystate[VK_RMENU]) & 0x80;
1164 set_input_key_state( input, VK_MENU, down );
1165 break;
1166 case VK_LSHIFT:
1167 case VK_RSHIFT:
1168 down = (input->keystate[VK_LSHIFT] | input->keystate[VK_RSHIFT]) & 0x80;
1169 set_input_key_state( input, VK_SHIFT, down );
1170 break;
1171 }
1172 break;
1173 }
1174 }
1175
1176 /* release the hardware message currently being processed by the given thread */
1177 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1178 int remove, user_handle_t new_win )
1179 {
1180 struct thread_input *input = queue->input;
1181 struct message *msg;
1182
1183 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1184 {
1185 if (msg->unique_id == hw_id) break;
1186 }
1187 if (&msg->entry == &input->msg_list) return; /* not found */
1188
1189 /* clear the queue bit for that message */
1190 if (remove || new_win)
1191 {
1192 struct message *other;
1193 int clr_bit;
1194
1195 clr_bit = get_hardware_msg_bit( msg );
1196 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1197 {
1198 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1199 {
1200 clr_bit = 0;
1201 break;
1202 }
1203 }
1204 if (clr_bit) clear_queue_bits( queue, clr_bit );
1205 }
1206
1207 if (new_win) /* set the new window */
1208 {
1209 struct thread *owner = get_window_thread( new_win );
1210 if (owner)
1211 {
1212 msg->win = new_win;
1213 if (owner->queue->input != input)
1214 {
1215 list_remove( &msg->entry );
1216 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1217 {
1218 free_message( msg );
1219 release_object( owner );
1220 return;
1221 }
1222 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1223 }
1224 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1225 remove = 0;
1226 release_object( owner );
1227 }
1228 }
1229 if (remove)
1230 {
1231 update_input_key_state( input, msg );
1232 list_remove( &msg->entry );
1233 free_message( msg );
1234 }
1235 }
1236
1237 /* find the window that should receive a given hardware message */
1238 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1239 struct hardware_msg_data *data, unsigned int *msg_code )
1240 {
1241 user_handle_t win = 0;
1242
1243 *msg_code = msg->msg;
1244 if (is_keyboard_msg( msg ))
1245 {
1246 if (input && !(win = input->focus))
1247 {
1248 win = input->active;
1249 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1250 }
1251 }
1252 else /* mouse message */
1253 {
1254 if (!input || !(win = input->capture))
1255 {
1256 if (!(win = msg->win) || !is_window_visible( win ))
1257 {
1258 if (input) win = window_from_point( input->desktop, data->x, data->y );
1259 }
1260 }
1261 }
1262 return win;
1263 }
1264
1265 /* queue a hardware message into a given thread input */
1266 static void queue_hardware_message( struct msg_queue *queue, struct message *msg,
1267 struct hardware_msg_data *data )
1268 {
1269 user_handle_t win;
1270 struct thread *thread;
1271 struct thread_input *input = queue ? queue->input : foreground_input;
1272 unsigned int msg_code;
1273
1274 last_input_time = get_tick_count();
1275 win = find_hardware_message_window( input, msg, data, &msg_code );
1276 if (!win || !(thread = get_window_thread(win)))
1277 {
1278 if (input) update_input_key_state( input, msg );
1279 free( msg );
1280 return;
1281 }
1282 input = thread->queue->input;
1283
1284 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1285 else
1286 {
1287 msg->unique_id = 0; /* will be set once we return it to the app */
1288 list_add_tail( &input->msg_list, &msg->entry );
1289 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1290 }
1291 release_object( thread );
1292 }
1293
1294 /* check message filter for a hardware message */
1295 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1296 user_handle_t filter_win, unsigned int first, unsigned int last )
1297 {
1298 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1299 {
1300 /* we can only test the window for a keyboard message since the
1301 * dest window for a mouse message depends on hittest */
1302 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1303 return 0;
1304 /* the message code is final for a keyboard message, we can simply check it */
1305 return check_msg_filter( msg_code, first, last );
1306 }
1307 else /* mouse message */
1308 {
1309 /* we need to check all possible values that the message can have in the end */
1310
1311 if (check_msg_filter( msg_code, first, last )) return 1;
1312 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1313
1314 /* all other messages can become non-client messages */
1315 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1316
1317 /* clicks can become double-clicks or non-client double-clicks */
1318 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1319 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1320 {
1321 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1322 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1323 }
1324 return 0;
1325 }
1326 }
1327
1328
1329 /* find a hardware message for the given queue */
1330 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1331 unsigned int first, unsigned int last, struct get_message_reply *reply )
1332 {
1333 struct thread_input *input = thread->queue->input;
1334 struct thread *win_thread;
1335 struct list *ptr;
1336 user_handle_t win;
1337 int clear_bits, got_one = 0;
1338 unsigned int msg_code;
1339
1340 ptr = list_head( &input->msg_list );
1341 if (hw_id)
1342 {
1343 while (ptr)
1344 {
1345 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1346 if (msg->unique_id == hw_id) break;
1347 ptr = list_next( &input->msg_list, ptr );
1348 }
1349 if (!ptr) ptr = list_head( &input->msg_list );
1350 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1351 }
1352
1353 if (ptr == list_head( &input->msg_list ))
1354 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1355 else
1356 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1357
1358 while (ptr)
1359 {
1360 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1361 struct hardware_msg_data *data = msg->data;
1362
1363 ptr = list_next( &input->msg_list, ptr );
1364 win = find_hardware_message_window( input, msg, data, &msg_code );
1365 if (!win || !(win_thread = get_window_thread( win )))
1366 {
1367 /* no window at all, remove it */
1368 update_input_key_state( input, msg );
1369 list_remove( &msg->entry );
1370 free_message( msg );
1371 continue;
1372 }
1373 if (win_thread != thread)
1374 {
1375 if (win_thread->queue->input == input)
1376 {
1377 /* wake the other thread */
1378 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1379 got_one = 1;
1380 }
1381 else
1382 {
1383 /* for another thread input, drop it */
1384 update_input_key_state( input, msg );
1385 list_remove( &msg->entry );
1386 free_message( msg );
1387 }
1388 release_object( win_thread );
1389 continue;
1390 }
1391 release_object( win_thread );
1392
1393 /* if we already got a message for another thread, or if it doesn't
1394 * match the filter we skip it */
1395 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1396 {
1397 clear_bits &= ~get_hardware_msg_bit( msg );
1398 continue;
1399 }
1400 /* now we can return it */
1401 if (!msg->unique_id) msg->unique_id = get_unique_id();
1402 reply->type = MSG_HARDWARE;
1403 reply->win = win;
1404 reply->msg = msg_code;
1405 reply->wparam = msg->wparam;
1406 reply->lparam = msg->lparam;
1407 reply->time = msg->time;
1408
1409 data->hw_id = msg->unique_id;
1410 set_reply_data( msg->data, msg->data_size );
1411 return 1;
1412 }
1413 /* nothing found, clear the hardware queue bits */
1414 clear_queue_bits( thread->queue, clear_bits );
1415 return 0;
1416 }
1417
1418 /* increment (or decrement if 'incr' is negative) the queue paint count */
1419 void inc_queue_paint_count( struct thread *thread, int incr )
1420 {
1421 struct msg_queue *queue = thread->queue;
1422
1423 assert( queue );
1424
1425 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1426
1427 if (queue->paint_count)
1428 set_queue_bits( queue, QS_PAINT );
1429 else
1430 clear_queue_bits( queue, QS_PAINT );
1431 }
1432
1433
1434 /* remove all messages and timers belonging to a certain window */
1435 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1436 {
1437 struct msg_queue *queue = thread->queue;
1438 struct list *ptr;
1439 int i;
1440
1441 if (!queue) return;
1442
1443 /* remove timers */
1444
1445 ptr = list_head( &queue->pending_timers );
1446 while (ptr)
1447 {
1448 struct list *next = list_next( &queue->pending_timers, ptr );
1449 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1450 if (timer->win == win) free_timer( queue, timer );
1451 ptr = next;
1452 }
1453 ptr = list_head( &queue->expired_timers );
1454 while (ptr)
1455 {
1456 struct list *next = list_next( &queue->expired_timers, ptr );
1457 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1458 if (timer->win == win) free_timer( queue, timer );
1459 ptr = next;
1460 }
1461
1462 /* remove messages */
1463 for (i = 0; i < NB_MSG_KINDS; i++)
1464 {
1465 struct list *ptr, *next;
1466
1467 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1468 {
1469 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1470 if (msg->win == win) remove_queue_message( queue, msg, i );
1471 }
1472 }
1473
1474 thread_input_cleanup_window( queue, win );
1475 }
1476
1477 /* post a message to a window; used by socket handling */
1478 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1479 {
1480 struct message *msg;
1481 struct thread *thread = get_window_thread( win );
1482
1483 if (!thread) return;
1484
1485 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1486 {
1487 msg->type = MSG_POSTED;
1488 msg->win = get_user_full_handle( win );
1489 msg->msg = message;
1490 msg->wparam = wparam;
1491 msg->lparam = lparam;
1492 msg->time = get_tick_count();
1493 msg->result = NULL;
1494 msg->data = NULL;
1495 msg->data_size = 0;
1496
1497 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1498 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1499 }
1500 release_object( thread );
1501 }
1502
1503 /* post a win event */
1504 void post_win_event( struct thread *thread, unsigned int event,
1505 user_handle_t win, unsigned int object_id,
1506 unsigned int child_id, client_ptr_t hook_proc,
1507 const WCHAR *module, data_size_t module_size,
1508 user_handle_t hook)
1509 {
1510 struct message *msg;
1511
1512 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1513 {
1514 struct winevent_msg_data *data;
1515
1516 msg->type = MSG_WINEVENT;
1517 msg->win = get_user_full_handle( win );
1518 msg->msg = event;
1519 msg->wparam = object_id;
1520 msg->lparam = child_id;
1521 msg->time = get_tick_count();
1522 msg->result = NULL;
1523
1524 if ((data = malloc( sizeof(*data) + module_size )))
1525 {
1526 data->hook = hook;
1527 data->tid = get_thread_id( current );
1528 data->hook_proc = hook_proc;
1529 memcpy( data + 1, module, module_size );
1530
1531 msg->data = data;
1532 msg->data_size = sizeof(*data) + module_size;
1533
1534 if (debug_level > 1)
1535 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1536 get_thread_id(thread), event, win, object_id, child_id );
1537 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1538 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1539 }
1540 else
1541 free( msg );
1542 }
1543 }
1544
1545
1546 /* check if the thread owning the window is hung */
1547 DECL_HANDLER(is_window_hung)
1548 {
1549 struct thread *thread;
1550
1551 thread = get_window_thread( req->win );
1552 if (thread)
1553 {
1554 reply->is_hung = is_queue_hung( thread->queue );
1555 release_object( thread );
1556 }
1557 else reply->is_hung = 0;
1558 }
1559
1560
1561 /* get the message queue of the current thread */
1562 DECL_HANDLER(get_msg_queue)
1563 {
1564 struct msg_queue *queue = get_current_queue();
1565
1566 reply->handle = 0;
1567 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1568 }
1569
1570
1571 /* set the file descriptor associated to the current thread queue */
1572 DECL_HANDLER(set_queue_fd)
1573 {
1574 struct msg_queue *queue = get_current_queue();
1575 struct file *file;
1576 int unix_fd;
1577
1578 if (queue->fd) /* fd can only be set once */
1579 {
1580 set_error( STATUS_ACCESS_DENIED );
1581 return;
1582 }
1583 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1584
1585 if ((unix_fd = get_file_unix_fd( file )) != -1)
1586 {
1587 if ((unix_fd = dup( unix_fd )) != -1)
1588 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1589 else
1590 file_set_error();
1591 }
1592 release_object( file );
1593 }
1594
1595
1596 /* set the current message queue wakeup mask */
1597 DECL_HANDLER(set_queue_mask)
1598 {
1599 struct msg_queue *queue = get_current_queue();
1600
1601 if (queue)
1602 {
1603 queue->wake_mask = req->wake_mask;
1604 queue->changed_mask = req->changed_mask;
1605 reply->wake_bits = queue->wake_bits;
1606 reply->changed_bits = queue->changed_bits;
1607 if (is_signaled( queue ))
1608 {
1609 /* if skip wait is set, do what would have been done in the subsequent wait */
1610 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1611 else wake_up( &queue->obj, 0 );
1612 }
1613 }
1614 }
1615
1616
1617 /* get the current message queue status */
1618 DECL_HANDLER(get_queue_status)
1619 {
1620 struct msg_queue *queue = current->queue;
1621 if (queue)
1622 {
1623 reply->wake_bits = queue->wake_bits;
1624 reply->changed_bits = queue->changed_bits;
1625 if (req->clear) queue->changed_bits = 0;
1626 }
1627 else reply->wake_bits = reply->changed_bits = 0;
1628 }
1629
1630
1631 /* send a message to a thread queue */
1632 DECL_HANDLER(send_message)
1633 {
1634 struct message *msg;
1635 struct msg_queue *send_queue = get_current_queue();
1636 struct msg_queue *recv_queue = NULL;
1637 struct thread *thread = NULL;
1638
1639 if (!(thread = get_thread_from_id( req->id ))) return;
1640
1641 if (!(recv_queue = thread->queue))
1642 {
1643 set_error( STATUS_INVALID_PARAMETER );
1644 release_object( thread );
1645 return;
1646 }
1647 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1648 {
1649 set_error( STATUS_TIMEOUT );
1650 release_object( thread );
1651 return;
1652 }
1653
1654 if ((msg = mem_alloc( sizeof(*msg) )))
1655 {
1656 msg->type = req->type;
1657 msg->win = get_user_full_handle( req->win );
1658 msg->msg = req->msg;
1659 msg->wparam = req->wparam;
1660 msg->lparam = req->lparam;
1661 msg->time = get_tick_count();
1662 msg->result = NULL;
1663 msg->data = NULL;
1664 msg->data_size = get_req_data_size();
1665
1666 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1667 {
1668 free( msg );
1669 release_object( thread );
1670 return;
1671 }
1672
1673 switch(msg->type)
1674 {
1675 case MSG_OTHER_PROCESS:
1676 case MSG_ASCII:
1677 case MSG_UNICODE:
1678 case MSG_CALLBACK:
1679 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1680 {
1681 free_message( msg );
1682 break;
1683 }
1684 /* fall through */
1685 case MSG_NOTIFY:
1686 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1687 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1688 break;
1689 case MSG_POSTED:
1690 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1691 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1692 break;
1693 case MSG_HARDWARE: /* should use send_hardware_message instead */
1694 case MSG_CALLBACK_RESULT: /* cannot send this one */
1695 default:
1696 set_error( STATUS_INVALID_PARAMETER );
1697 free( msg );
1698 break;
1699 }
1700 }
1701 release_object( thread );
1702 }
1703
1704 /* send a hardware message to a thread queue */
1705 DECL_HANDLER(send_hardware_message)
1706 {
1707 struct message *msg;
1708 struct msg_queue *recv_queue = NULL;
1709 struct thread *thread = NULL;
1710 struct hardware_msg_data *data;
1711
1712 if (req->id)
1713 {
1714 if (!(thread = get_thread_from_id( req->id ))) return;
1715 }
1716
1717 if (thread && !(recv_queue = thread->queue))
1718 {
1719 set_error( STATUS_INVALID_PARAMETER );
1720 release_object( thread );
1721 return;
1722 }
1723
1724 if (!(data = mem_alloc( sizeof(*data) )))
1725 {
1726 if (thread) release_object( thread );
1727 return;
1728 }
1729 memset( data, 0, sizeof(*data) );
1730 data->x = req->x;
1731 data->y = req->y;
1732 data->info = req->info;
1733
1734 if ((msg = mem_alloc( sizeof(*msg) )))
1735 {
1736 msg->type = MSG_HARDWARE;
1737 msg->win = get_user_full_handle( req->win );
1738 msg->msg = req->msg;
1739 msg->wparam = req->wparam;
1740 msg->lparam = req->lparam;
1741 msg->time = req->time;
1742 msg->result = NULL;
1743 msg->data = data;
1744 msg->data_size = sizeof(*data);
1745 queue_hardware_message( recv_queue, msg, data );
1746 }
1747 else free( data );
1748
1749 if (thread) release_object( thread );
1750 }
1751
1752 /* post a quit message to the current queue */
1753 DECL_HANDLER(post_quit_message)
1754 {
1755 struct msg_queue *queue = get_current_queue();
1756
1757 if (!queue)
1758 return;
1759
1760 queue->quit_message = 1;
1761 queue->exit_code = req->exit_code;
1762 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1763 }
1764
1765 /* get a message from the current queue */
1766 DECL_HANDLER(get_message)
1767 {
1768 struct timer *timer;
1769 struct list *ptr;
1770 struct msg_queue *queue = get_current_queue();
1771 user_handle_t get_win = get_user_full_handle( req->get_win );
1772 unsigned int filter = req->flags >> 16;
1773
1774 reply->active_hooks = get_active_hooks();
1775
1776 if (!queue) return;
1777 queue->last_get_msg = current_time;
1778 if (!filter) filter = QS_ALLINPUT;
1779
1780 /* first check for sent messages */
1781 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1782 {
1783 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1784 receive_message( queue, msg, reply );
1785 return;
1786 }
1787
1788 /* clear changed bits so we can wait on them if we don't find a message */
1789 if (filter & QS_POSTMESSAGE)
1790 {
1791 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1792 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1793 }
1794 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1795 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1796
1797 /* then check for posted messages */
1798 if ((filter & QS_POSTMESSAGE) &&
1799 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1800 return;
1801
1802 /* only check for quit messages if not posted messages pending.
1803 * note: the quit message isn't filtered */
1804 if (get_quit_message( queue, req->flags, reply ))
1805 return;
1806
1807 /* then check for any raw hardware message */
1808 if ((filter & QS_INPUT) &&
1809 filter_contains_hw_range( req->get_first, req->get_last ) &&
1810 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1811 return;
1812
1813 /* now check for WM_PAINT */
1814 if ((filter & QS_PAINT) &&
1815 queue->paint_count &&
1816 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1817 (reply->win = find_window_to_repaint( get_win, current )))
1818 {
1819 reply->type = MSG_POSTED;
1820 reply->msg = WM_PAINT;
1821 reply->wparam = 0;
1822 reply->lparam = 0;
1823 reply->time = get_tick_count();
1824 return;
1825 }
1826
1827 /* now check for timer */
1828 if ((filter & QS_TIMER) &&
1829 (timer = find_expired_timer( queue, get_win, req->get_first,
1830 req->get_last, (req->flags & PM_REMOVE) )))
1831 {
1832 reply->type = MSG_POSTED;
1833 reply->win = timer->win;
1834 reply->msg = timer->msg;
1835 reply->wparam = timer->id;
1836 reply->lparam = timer->lparam;
1837 reply->time = get_tick_count();
1838 return;
1839 }
1840
1841 queue->wake_mask = req->wake_mask;
1842 queue->changed_mask = req->changed_mask;
1843 set_error( STATUS_PENDING ); /* FIXME */
1844 }
1845
1846
1847 /* reply to a sent message */
1848 DECL_HANDLER(reply_message)
1849 {
1850 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1851 else if (current->queue->recv_result)
1852 reply_message( current->queue, req->result, 0, req->remove,
1853 get_req_data(), get_req_data_size() );
1854 }
1855
1856
1857 /* accept the current hardware message */
1858 DECL_HANDLER(accept_hardware_message)
1859 {
1860 if (current->queue)
1861 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1862 else
1863 set_error( STATUS_ACCESS_DENIED );
1864 }
1865
1866
1867 /* retrieve the reply for the last message sent */
1868 DECL_HANDLER(get_message_reply)
1869 {
1870 struct message_result *result;
1871 struct list *entry;
1872 struct msg_queue *queue = current->queue;
1873
1874 if (queue)
1875 {
1876 set_error( STATUS_PENDING );
1877 reply->result = 0;
1878
1879 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1880
1881 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1882 if (result->replied || req->cancel)
1883 {
1884 if (result->replied)
1885 {
1886 reply->result = result->result;
1887 set_error( result->error );
1888 if (result->data)
1889 {
1890 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1891 set_reply_data_ptr( result->data, data_len );
1892 result->data = NULL;
1893 result->data_size = 0;
1894 }
1895 }
1896 remove_result_from_sender( result );
1897
1898 entry = list_head( &queue->send_result );
1899 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1900 else
1901 {
1902 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1903 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1904 }
1905 }
1906 }
1907 else set_error( STATUS_ACCESS_DENIED );
1908 }
1909
1910
1911 /* set a window timer */
1912 DECL_HANDLER(set_win_timer)
1913 {
1914 struct timer *timer;
1915 struct msg_queue *queue;
1916 struct thread *thread = NULL;
1917 user_handle_t win = 0;
1918 lparam_t id = req->id;
1919
1920 if (req->win)
1921 {
1922 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1923 {
1924 set_error( STATUS_INVALID_HANDLE );
1925 return;
1926 }
1927 if (thread->process != current->process)
1928 {
1929 release_object( thread );
1930 set_error( STATUS_ACCESS_DENIED );
1931 return;
1932 }
1933 queue = thread->queue;
1934 /* remove it if it existed already */
1935 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1936 }
1937 else
1938 {
1939 queue = get_current_queue();
1940 /* look for a timer with this id */
1941 if (id && (timer = find_timer( queue, 0, req->msg, id )))
1942 {
1943 /* free and reuse id */
1944 free_timer( queue, timer );
1945 }
1946 else
1947 {
1948 /* find a free id for it */
1949 do
1950 {
1951 id = queue->next_timer_id;
1952 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
1953 }
1954 while (find_timer( queue, 0, req->msg, id ));
1955 }
1956 }
1957
1958 if ((timer = set_timer( queue, req->rate )))
1959 {
1960 timer->win = win;
1961 timer->msg = req->msg;
1962 timer->id = id;
1963 timer->lparam = req->lparam;
1964 reply->id = id;
1965 }
1966 if (thread) release_object( thread );
1967 }
1968
1969 /* kill a window timer */
1970 DECL_HANDLER(kill_win_timer)
1971 {
1972 struct timer *timer;
1973 struct thread *thread;
1974 user_handle_t win = 0;
1975
1976 if (req->win)
1977 {
1978 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1979 {
1980 set_error( STATUS_INVALID_HANDLE );
1981 return;
1982 }
1983 if (thread->process != current->process)
1984 {
1985 release_object( thread );
1986 set_error( STATUS_ACCESS_DENIED );
1987 return;
1988 }
1989 }
1990 else thread = (struct thread *)grab_object( current );
1991
1992 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1993 free_timer( thread->queue, timer );
1994 else
1995 set_error( STATUS_INVALID_PARAMETER );
1996
1997 release_object( thread );
1998 }
1999
2000
2001 /* attach (or detach) thread inputs */
2002 DECL_HANDLER(attach_thread_input)
2003 {
2004 struct thread *thread_from = get_thread_from_id( req->tid_from );
2005 struct thread *thread_to = get_thread_from_id( req->tid_to );
2006
2007 if (!thread_from || !thread_to)
2008 {
2009 if (thread_from) release_object( thread_from );
2010 if (thread_to) release_object( thread_to );
2011 return;
2012 }
2013 if (thread_from != thread_to)
2014 {
2015 if (req->attach) attach_thread_input( thread_from, thread_to );
2016 else
2017 {
2018 if (thread_from->queue && thread_to->queue &&
2019 thread_from->queue->input == thread_to->queue->input)
2020 detach_thread_input( thread_from );
2021 else
2022 set_error( STATUS_ACCESS_DENIED );
2023 }
2024 }
2025 else set_error( STATUS_ACCESS_DENIED );
2026 release_object( thread_from );
2027 release_object( thread_to );
2028 }
2029
2030
2031 /* get thread input data */
2032 DECL_HANDLER(get_thread_input)
2033 {
2034 struct thread *thread = NULL;
2035 struct thread_input *input;
2036
2037 if (req->tid)
2038 {
2039 if (!(thread = get_thread_from_id( req->tid ))) return;
2040 input = thread->queue ? thread->queue->input : NULL;
2041 }
2042 else input = foreground_input; /* get the foreground thread info */
2043
2044 if (input)
2045 {
2046 reply->focus = input->focus;
2047 reply->capture = input->capture;
2048 reply->active = input->active;
2049 reply->menu_owner = input->menu_owner;
2050 reply->move_size = input->move_size;
2051 reply->caret = input->caret;
2052 reply->rect = input->caret_rect;
2053 }
2054 else
2055 {
2056 reply->focus = 0;
2057 reply->capture = 0;
2058 reply->active = 0;
2059 reply->menu_owner = 0;
2060 reply->move_size = 0;
2061 reply->caret = 0;
2062 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2063 }
2064 /* foreground window is active window of foreground thread */
2065 reply->foreground = foreground_input ? foreground_input->active : 0;
2066 if (thread) release_object( thread );
2067 }
2068
2069
2070 /* retrieve queue keyboard state for a given thread */
2071 DECL_HANDLER(get_key_state)
2072 {
2073 struct thread *thread;
2074 struct thread_input *input;
2075
2076 if (!(thread = get_thread_from_id( req->tid ))) return;
2077 input = thread->queue ? thread->queue->input : NULL;
2078 if (input)
2079 {
2080 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2081 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2082 }
2083 release_object( thread );
2084 }
2085
2086
2087 /* set queue keyboard state for a given thread */
2088 DECL_HANDLER(set_key_state)
2089 {
2090 struct thread *thread = NULL;
2091 struct thread_input *input;
2092
2093 if (!(thread = get_thread_from_id( req->tid ))) return;
2094 input = thread->queue ? thread->queue->input : NULL;
2095 if (input)
2096 {
2097 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2098 if (size) memcpy( input->keystate, get_req_data(), size );
2099 }
2100 release_object( thread );
2101 }
2102
2103
2104 /* set the system foreground window */
2105 DECL_HANDLER(set_foreground_window)
2106 {
2107 struct thread *thread;
2108 struct msg_queue *queue = get_current_queue();
2109
2110 reply->previous = foreground_input ? foreground_input->active : 0;
2111 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2112 reply->send_msg_new = FALSE;
2113
2114 if (is_top_level_window( req->handle ) &&
2115 ((thread = get_window_thread( req->handle ))))
2116 {
2117 foreground_input = thread->queue->input;
2118 reply->send_msg_new = (foreground_input != queue->input);
2119 release_object( thread );
2120 }
2121 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2122 }
2123
2124
2125 /* set the current thread focus window */
2126 DECL_HANDLER(set_focus_window)
2127 {
2128 struct msg_queue *queue = get_current_queue();
2129
2130 reply->previous = 0;
2131 if (queue && check_queue_input_window( queue, req->handle ))
2132 {
2133 reply->previous = queue->input->focus;
2134 queue->input->focus = get_user_full_handle( req->handle );
2135 }
2136 }
2137
2138
2139 /* set the current thread active window */
2140 DECL_HANDLER(set_active_window)
2141 {
2142 struct msg_queue *queue = get_current_queue();
2143
2144 reply->previous = 0;
2145 if (queue && check_queue_input_window( queue, req->handle ))
2146 {
2147 if (!req->handle || make_window_active( req->handle ))
2148 {
2149 reply->previous = queue->input->active;
2150 queue->input->active = get_user_full_handle( req->handle );
2151 }
2152 else set_error( STATUS_INVALID_HANDLE );
2153 }
2154 }
2155
2156
2157 /* set the current thread capture window */
2158 DECL_HANDLER(set_capture_window)
2159 {
2160 struct msg_queue *queue = get_current_queue();
2161
2162 reply->previous = reply->full_handle = 0;
2163 if (queue && check_queue_input_window( queue, req->handle ))
2164 {
2165 struct thread_input *input = queue->input;
2166
2167 reply->previous = input->capture;
2168 input->capture = get_user_full_handle( req->handle );
2169 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2170 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2171 reply->full_handle = input->capture;
2172 }
2173 }
2174
2175
2176 /* Set the current thread caret window */
2177 DECL_HANDLER(set_caret_window)
2178 {
2179 struct msg_queue *queue = get_current_queue();
2180
2181 reply->previous = 0;
2182 if (queue && check_queue_input_window( queue, req->handle ))
2183 {
2184 struct thread_input *input = queue->input;
2185
2186 reply->previous = input->caret;
2187 reply->old_rect = input->caret_rect;
2188 reply->old_hide = input->caret_hide;
2189 reply->old_state = input->caret_state;
2190
2191 set_caret_window( input, get_user_full_handle(req->handle) );
2192 input->caret_rect.right = input->caret_rect.left + req->width;
2193 input->caret_rect.bottom = input->caret_rect.top + req->height;
2194 }
2195 }
2196
2197
2198 /* Set the current thread caret information */
2199 DECL_HANDLER(set_caret_info)
2200 {
2201 struct msg_queue *queue = get_current_queue();
2202 struct thread_input *input;
2203
2204 if (!queue) return;
2205 input = queue->input;
2206 reply->full_handle = input->caret;
2207 reply->old_rect = input->caret_rect;
2208 reply->old_hide = input->caret_hide;
2209 reply->old_state = input->caret_state;
2210
2211 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2212 {
2213 set_error( STATUS_ACCESS_DENIED );
2214 return;
2215 }
2216 if (req->flags & SET_CARET_POS)
2217 {
2218 input->caret_rect.right += req->x - input->caret_rect.left;
2219 input->caret_rect.bottom += req->y - input->caret_rect.top;
2220 input->caret_rect.left = req->x;
2221 input->caret_rect.top = req->y;
2222 }
2223 if (req->flags & SET_CARET_HIDE)
2224 {
2225 input->caret_hide += req->hide;
2226 if (input->caret_hide < 0) input->caret_hide = 0;
2227 }
2228 if (req->flags & SET_CARET_STATE)
2229 {
2230 if (req->state == -1) input->caret_state = !input->caret_state;
2231 else input->caret_state = !!req->state;
2232 }
2233 }
2234
2235
2236 /* get the time of the last input event */
2237 DECL_HANDLER(get_last_input_time)
2238 {
2239 reply->time = last_input_time;
2240 }
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