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sane.ds: Implement stub support for ICAP_PIXELFLAVOR.
[wine/multimedia.git] / server / queue.c
blobbc0aea795c3a6850af35356e8cb6d54159943e46
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 if (process->idle_event)
302 {
303 set_event( process->idle_event );
304 release_object( process->idle_event );
305 process->idle_event = NULL;
306 }
307 }
308 release_object( thread->queue );
309 thread->queue = NULL;
310 }
311
312 /* get the hook table for a given thread */
313 struct hook_table *get_queue_hooks( struct thread *thread )
314 {
315 if (!thread->queue) return NULL;
316 return thread->queue->hooks;
317 }
318
319 /* set the hook table for a given thread, allocating the queue if needed */
320 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
321 {
322 struct msg_queue *queue = thread->queue;
323 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
324 if (queue->hooks) release_object( queue->hooks );
325 queue->hooks = hooks;
326 }
327
328 /* check the queue status */
329 static inline int is_signaled( struct msg_queue *queue )
330 {
331 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
332 }
333
334 /* set some queue bits */
335 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
336 {
337 queue->wake_bits |= bits;
338 queue->changed_bits |= bits;
339 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
340 }
341
342 /* clear some queue bits */
343 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
344 {
345 queue->wake_bits &= ~bits;
346 queue->changed_bits &= ~bits;
347 }
348
349 /* check whether msg is a keyboard message */
350 static inline int is_keyboard_msg( struct message *msg )
351 {
352 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
353 }
354
355 /* check if message is matched by the filter */
356 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
357 {
358 return (msg >= first && msg <= last);
359 }
360
361 /* check whether a message filter contains at least one potential hardware message */
362 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
363 {
364 /* hardware message ranges are (in numerical order):
365 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
366 * WM_KEYFIRST .. WM_KEYLAST
367 * WM_MOUSEFIRST .. WM_MOUSELAST
368 */
369 if (last < WM_NCMOUSEFIRST) return 0;
370 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
371 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
372 if (first > WM_MOUSELAST) return 0;
373 return 1;
374 }
375
376 /* get the QS_* bit corresponding to a given hardware message */
377 static inline int get_hardware_msg_bit( struct message *msg )
378 {
379 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
380 if (is_keyboard_msg( msg )) return QS_KEY;
381 return QS_MOUSEBUTTON;
382 }
383
384 /* get the current thread queue, creating it if needed */
385 static inline struct msg_queue *get_current_queue(void)
386 {
387 struct msg_queue *queue = current->queue;
388 if (!queue) queue = create_msg_queue( current, NULL );
389 return queue;
390 }
391
392 /* get a (pseudo-)unique id to tag hardware messages */
393 static inline unsigned int get_unique_id(void)
394 {
395 static unsigned int id;
396 if (!++id) id = 1; /* avoid an id of 0 */
397 return id;
398 }
399
400 /* try to merge a message with the last in the list; return 1 if successful */
401 static int merge_message( struct thread_input *input, const struct message *msg )
402 {
403 struct message *prev;
404 struct list *ptr = list_tail( &input->msg_list );
405
406 if (!ptr) return 0;
407 prev = LIST_ENTRY( ptr, struct message, entry );
408 if (prev->result) return 0;
409 if (prev->win && msg->win && prev->win != msg->win) return 0;
410 if (prev->msg != msg->msg) return 0;
411 if (prev->type != msg->type) return 0;
412 /* now we can merge it */
413 prev->wparam = msg->wparam;
414 prev->lparam = msg->lparam;
415 prev->time = msg->time;
416 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
417 {
418 struct hardware_msg_data *prev_data = prev->data;
419 struct hardware_msg_data *msg_data = msg->data;
420 prev_data->x = msg_data->x;
421 prev_data->y = msg_data->y;
422 prev_data->info = msg_data->info;
423 }
424 return 1;
425 }
426
427 /* free a result structure */
428 static void free_result( struct message_result *result )
429 {
430 if (result->timeout) remove_timeout_user( result->timeout );
431 free( result->data );
432 if (result->callback_msg) free_message( result->callback_msg );
433 free( result );
434 }
435
436 /* remove the result from the sender list it is on */
437 static inline void remove_result_from_sender( struct message_result *result )
438 {
439 assert( result->sender );
440
441 list_remove( &result->sender_entry );
442 result->sender = NULL;
443 if (!result->receiver) free_result( result );
444 }
445
446 /* store the message result in the appropriate structure */
447 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
448 {
449 res->result = result;
450 res->error = error;
451 res->replied = 1;
452 if (res->timeout)
453 {
454 remove_timeout_user( res->timeout );
455 res->timeout = NULL;
456 }
457 if (res->sender)
458 {
459 if (res->callback_msg)
460 {
461 /* queue the callback message in the sender queue */
462 struct callback_msg_data *data = res->callback_msg->data;
463 data->result = result;
464 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
465 set_queue_bits( res->sender, QS_SENDMESSAGE );
466 res->callback_msg = NULL;
467 remove_result_from_sender( res );
468 }
469 else
470 {
471 /* wake sender queue if waiting on this result */
472 if (list_head(&res->sender->send_result) == &res->sender_entry)
473 set_queue_bits( res->sender, QS_SMRESULT );
474 }
475 }
476
477 }
478
479 /* free a message when deleting a queue or window */
480 static void free_message( struct message *msg )
481 {
482 struct message_result *result = msg->result;
483 if (result)
484 {
485 result->msg = NULL;
486 if (result->sender)
487 {
488 result->receiver = NULL;
489 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
490 }
491 else free_result( result );
492 }
493 free( msg->data );
494 free( msg );
495 }
496
497 /* remove (and free) a message from a message list */
498 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
499 enum message_kind kind )
500 {
501 list_remove( &msg->entry );
502 switch(kind)
503 {
504 case SEND_MESSAGE:
505 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
506 break;
507 case POST_MESSAGE:
508 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
509 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
510 break;
511 }
512 free_message( msg );
513 }
514
515 /* message timed out without getting a reply */
516 static void result_timeout( void *private )
517 {
518 struct message_result *result = private;
519
520 assert( !result->replied );
521
522 result->timeout = NULL;
523
524 if (result->msg) /* not received yet */
525 {
526 struct message *msg = result->msg;
527
528 result->msg = NULL;
529 msg->result = NULL;
530 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
531 result->receiver = NULL;
532 if (!result->sender)
533 {
534 free_result( result );
535 return;
536 }
537 }
538
539 store_message_result( result, 0, STATUS_TIMEOUT );
540 }
541
542 /* allocate and fill a message result structure */
543 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
544 struct msg_queue *recv_queue,
545 struct message *msg, timeout_t timeout )
546 {
547 struct message_result *result = mem_alloc( sizeof(*result) );
548 if (result)
549 {
550 result->msg = msg;
551 result->sender = send_queue;
552 result->receiver = recv_queue;
553 result->replied = 0;
554 result->data = NULL;
555 result->data_size = 0;
556 result->timeout = NULL;
557
558 if (msg->type == MSG_CALLBACK)
559 {
560 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
561
562 if (!callback_msg)
563 {
564 free( result );
565 return NULL;
566 }
567 callback_msg->type = MSG_CALLBACK_RESULT;
568 callback_msg->win = msg->win;
569 callback_msg->msg = msg->msg;
570 callback_msg->wparam = 0;
571 callback_msg->lparam = 0;
572 callback_msg->time = get_tick_count();
573 callback_msg->result = NULL;
574 /* steal the data from the original message */
575 callback_msg->data = msg->data;
576 callback_msg->data_size = msg->data_size;
577 msg->data = NULL;
578 msg->data_size = 0;
579
580 result->callback_msg = callback_msg;
581 list_add_head( &send_queue->callback_result, &result->sender_entry );
582 }
583 else
584 {
585 result->callback_msg = NULL;
586 list_add_head( &send_queue->send_result, &result->sender_entry );
587 }
588
589 if (timeout != TIMEOUT_INFINITE)
590 result->timeout = add_timeout_user( timeout, result_timeout, result );
591 }
592 return result;
593 }
594
595 /* receive a message, removing it from the sent queue */
596 static void receive_message( struct msg_queue *queue, struct message *msg,
597 struct get_message_reply *reply )
598 {
599 struct message_result *result = msg->result;
600
601 reply->total = msg->data_size;
602 if (msg->data_size > get_reply_max_size())
603 {
604 set_error( STATUS_BUFFER_OVERFLOW );
605 return;
606 }
607 reply->type = msg->type;
608 reply->win = msg->win;
609 reply->msg = msg->msg;
610 reply->wparam = msg->wparam;
611 reply->lparam = msg->lparam;
612 reply->time = msg->time;
613
614 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
615
616 list_remove( &msg->entry );
617 /* put the result on the receiver result stack */
618 if (result)
619 {
620 result->msg = NULL;
621 result->recv_next = queue->recv_result;
622 queue->recv_result = result;
623 }
624 free( msg );
625 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
626 }
627
628 /* set the result of the current received message */
629 static void reply_message( struct msg_queue *queue, lparam_t result,
630 unsigned int error, int remove, const void *data, data_size_t len )
631 {
632 struct message_result *res = queue->recv_result;
633
634 if (remove)
635 {
636 queue->recv_result = res->recv_next;
637 res->receiver = NULL;
638 if (!res->sender) /* no one waiting for it */
639 {
640 free_result( res );
641 return;
642 }
643 }
644 if (!res->replied)
645 {
646 if (len && (res->data = memdup( data, len ))) res->data_size = len;
647 store_message_result( res, result, error );
648 }
649 }
650
651 /* retrieve a posted message */
652 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
653 unsigned int first, unsigned int last, unsigned int flags,
654 struct get_message_reply *reply )
655 {
656 struct message *msg;
657
658 /* check against the filters */
659 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
660 {
661 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
662 if (!check_msg_filter( msg->msg, first, last )) continue;
663 goto found; /* found one */
664 }
665 return 0;
666
667 /* return it to the app */
668 found:
669 reply->total = msg->data_size;
670 if (msg->data_size > get_reply_max_size())
671 {
672 set_error( STATUS_BUFFER_OVERFLOW );
673 return 1;
674 }
675 reply->type = msg->type;
676 reply->win = msg->win;
677 reply->msg = msg->msg;
678 reply->wparam = msg->wparam;
679 reply->lparam = msg->lparam;
680 reply->time = msg->time;
681
682 if (flags & PM_REMOVE)
683 {
684 if (msg->data)
685 {
686 set_reply_data_ptr( msg->data, msg->data_size );
687 msg->data = NULL;
688 msg->data_size = 0;
689 }
690 remove_queue_message( queue, msg, POST_MESSAGE );
691 }
692 else if (msg->data) set_reply_data( msg->data, msg->data_size );
693
694 return 1;
695 }
696
697 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
698 struct get_message_reply *reply )
699 {
700 if (queue->quit_message)
701 {
702 reply->total = 0;
703 reply->type = MSG_POSTED;
704 reply->win = 0;
705 reply->msg = WM_QUIT;
706 reply->wparam = queue->exit_code;
707 reply->lparam = 0;
708 reply->time = get_tick_count();
709
710 if (flags & PM_REMOVE)
711 {
712 queue->quit_message = 0;
713 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
714 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
715 }
716 return 1;
717 }
718 else
719 return 0;
720 }
721
722 /* empty a message list and free all the messages */
723 static void empty_msg_list( struct list *list )
724 {
725 struct list *ptr;
726
727 while ((ptr = list_head( list )) != NULL)
728 {
729 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
730 list_remove( &msg->entry );
731 free_message( msg );
732 }
733 }
734
735 /* cleanup all pending results when deleting a queue */
736 static void cleanup_results( struct msg_queue *queue )
737 {
738 struct list *entry;
739
740 while ((entry = list_head( &queue->send_result )) != NULL)
741 {
742 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
743 }
744
745 while ((entry = list_head( &queue->callback_result )) != NULL)
746 {
747 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
748 }
749
750 while (queue->recv_result)
751 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
752 }
753
754 /* check if the thread owning the queue is hung (not checking for messages) */
755 static int is_queue_hung( struct msg_queue *queue )
756 {
757 struct wait_queue_entry *entry;
758
759 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
760 return 0; /* less than 5 seconds since last get message -> not hung */
761
762 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
763 {
764 if (entry->thread->queue == queue)
765 return 0; /* thread is waiting on queue -> not hung */
766 }
767 return 1;
768 }
769
770 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
771 {
772 struct msg_queue *queue = (struct msg_queue *)obj;
773 struct process *process = entry->thread->process;
774
775 /* a thread can only wait on its own queue */
776 if (entry->thread->queue != queue)
777 {
778 set_error( STATUS_ACCESS_DENIED );
779 return 0;
780 }
781 /* if waiting on the main process queue, set the idle event */
782 if (process->queue == queue)
783 {
784 if (process->idle_event) set_event( process->idle_event );
785 }
786 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
787 set_fd_events( queue->fd, POLLIN );
788 add_queue( obj, entry );
789 return 1;
790 }
791
792 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
793 {
794 struct msg_queue *queue = (struct msg_queue *)obj;
795 struct process *process = entry->thread->process;
796
797 remove_queue( obj, entry );
798 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
799 set_fd_events( queue->fd, 0 );
800
801 assert( entry->thread->queue == queue );
802
803 /* if waiting on the main process queue, reset the idle event */
804 if (process->queue == queue)
805 {
806 if (process->idle_event) reset_event( process->idle_event );
807 }
808 }
809
810 static void msg_queue_dump( struct object *obj, int verbose )
811 {
812 struct msg_queue *queue = (struct msg_queue *)obj;
813 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
814 queue->wake_bits, queue->wake_mask );
815 }
816
817 static int msg_queue_signaled( struct object *obj, struct thread *thread )
818 {
819 struct msg_queue *queue = (struct msg_queue *)obj;
820 int ret = 0;
821
822 if (queue->fd)
823 {
824 if ((ret = check_fd_events( queue->fd, POLLIN )))
825 /* stop waiting on select() if we are signaled */
826 set_fd_events( queue->fd, 0 );
827 else if (!list_empty( &obj->wait_queue ))
828 /* restart waiting on poll() if we are no longer signaled */
829 set_fd_events( queue->fd, POLLIN );
830 }
831 return ret || is_signaled( queue );
832 }
833
834 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
835 {
836 struct msg_queue *queue = (struct msg_queue *)obj;
837 queue->wake_mask = 0;
838 queue->changed_mask = 0;
839 return 0; /* Not abandoned */
840 }
841
842 static void msg_queue_destroy( struct object *obj )
843 {
844 struct msg_queue *queue = (struct msg_queue *)obj;
845 struct list *ptr;
846 int i;
847
848 cleanup_results( queue );
849 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
850
851 while ((ptr = list_head( &queue->pending_timers )))
852 {
853 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
854 list_remove( &timer->entry );
855 free( timer );
856 }
857 while ((ptr = list_head( &queue->expired_timers )))
858 {
859 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
860 list_remove( &timer->entry );
861 free( timer );
862 }
863 if (queue->timeout) remove_timeout_user( queue->timeout );
864 if (queue->input) release_object( queue->input );
865 if (queue->hooks) release_object( queue->hooks );
866 if (queue->fd) release_object( queue->fd );
867 }
868
869 static void msg_queue_poll_event( struct fd *fd, int event )
870 {
871 struct msg_queue *queue = get_fd_user( fd );
872 assert( queue->obj.ops == &msg_queue_ops );
873
874 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
875 wake_up( &queue->obj, 0 );
876 }
877
878 static void thread_input_dump( struct object *obj, int verbose )
879 {
880 struct thread_input *input = (struct thread_input *)obj;
881 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
882 input->focus, input->capture, input->active );
883 }
884
885 static void thread_input_destroy( struct object *obj )
886 {
887 struct thread_input *input = (struct thread_input *)obj;
888
889 if (foreground_input == input) foreground_input = NULL;
890 empty_msg_list( &input->msg_list );
891 if (input->desktop) release_object( input->desktop );
892 }
893
894 /* fix the thread input data when a window is destroyed */
895 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
896 {
897 struct thread_input *input = queue->input;
898
899 if (window == input->focus) input->focus = 0;
900 if (window == input->capture) input->capture = 0;
901 if (window == input->active) input->active = 0;
902 if (window == input->menu_owner) input->menu_owner = 0;
903 if (window == input->move_size) input->move_size = 0;
904 if (window == input->caret) set_caret_window( input, 0 );
905 }
906
907 /* check if the specified window can be set in the input data of a given queue */
908 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
909 {
910 struct thread *thread;
911 int ret = 0;
912
913 if (!window) return 1; /* we can always clear the data */
914
915 if ((thread = get_window_thread( window )))
916 {
917 ret = (queue->input == thread->queue->input);
918 if (!ret) set_error( STATUS_ACCESS_DENIED );
919 release_object( thread );
920 }
921 else set_error( STATUS_INVALID_HANDLE );
922
923 return ret;
924 }
925
926 /* make sure the specified thread has a queue */
927 int init_thread_queue( struct thread *thread )
928 {
929 if (thread->queue) return 1;
930 return (create_msg_queue( thread, NULL ) != NULL);
931 }
932
933 /* attach two thread input data structures */
934 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
935 {
936 struct desktop *desktop;
937 struct thread_input *input;
938
939 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
940 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
941 input = (struct thread_input *)grab_object( thread_to->queue->input );
942 if (input->desktop != desktop)
943 {
944 set_error( STATUS_ACCESS_DENIED );
945 release_object( input );
946 release_object( desktop );
947 return 0;
948 }
949 release_object( desktop );
950
951 if (thread_from->queue)
952 {
953 release_thread_input( thread_from );
954 thread_from->queue->input = input;
955 }
956 else
957 {
958 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
959 }
960 memset( input->keystate, 0, sizeof(input->keystate) );
961 return 1;
962 }
963
964 /* detach two thread input data structures */
965 void detach_thread_input( struct thread *thread_from )
966 {
967 struct thread_input *input;
968
969 if ((input = create_thread_input( thread_from )))
970 {
971 release_thread_input( thread_from );
972 thread_from->queue->input = input;
973 }
974 }
975
976
977 /* set the next timer to expire */
978 static void set_next_timer( struct msg_queue *queue )
979 {
980 struct list *ptr;
981
982 if (queue->timeout)
983 {
984 remove_timeout_user( queue->timeout );
985 queue->timeout = NULL;
986 }
987 if ((ptr = list_head( &queue->pending_timers )))
988 {
989 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
990 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
991 }
992 /* set/clear QS_TIMER bit */
993 if (list_empty( &queue->expired_timers ))
994 clear_queue_bits( queue, QS_TIMER );
995 else
996 set_queue_bits( queue, QS_TIMER );
997 }
998
999 /* find a timer from its window and id */
1000 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1001 unsigned int msg, lparam_t id )
1002 {
1003 struct list *ptr;
1004
1005 /* we need to search both lists */
1006
1007 LIST_FOR_EACH( ptr, &queue->pending_timers )
1008 {
1009 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1010 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1011 }
1012 LIST_FOR_EACH( ptr, &queue->expired_timers )
1013 {
1014 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1015 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1016 }
1017 return NULL;
1018 }
1019
1020 /* callback for the next timer expiration */
1021 static void timer_callback( void *private )
1022 {
1023 struct msg_queue *queue = private;
1024 struct list *ptr;
1025
1026 queue->timeout = NULL;
1027 /* move on to the next timer */
1028 ptr = list_head( &queue->pending_timers );
1029 list_remove( ptr );
1030 list_add_tail( &queue->expired_timers, ptr );
1031 set_next_timer( queue );
1032 }
1033
1034 /* link a timer at its rightful place in the queue list */
1035 static void link_timer( struct msg_queue *queue, struct timer *timer )
1036 {
1037 struct list *ptr;
1038
1039 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1040 {
1041 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1042 if (t->when >= timer->when) break;
1043 }
1044 list_add_before( ptr, &timer->entry );
1045 }
1046
1047 /* remove a timer from the queue timer list and free it */
1048 static void free_timer( struct msg_queue *queue, struct timer *timer )
1049 {
1050 list_remove( &timer->entry );
1051 free( timer );
1052 set_next_timer( queue );
1053 }
1054
1055 /* restart an expired timer */
1056 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1057 {
1058 list_remove( &timer->entry );
1059 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1060 link_timer( queue, timer );
1061 set_next_timer( queue );
1062 }
1063
1064 /* find an expired timer matching the filtering parameters */
1065 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1066 unsigned int get_first, unsigned int get_last,
1067 int remove )
1068 {
1069 struct list *ptr;
1070
1071 LIST_FOR_EACH( ptr, &queue->expired_timers )
1072 {
1073 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1074 if (win && timer->win != win) continue;
1075 if (check_msg_filter( timer->msg, get_first, get_last ))
1076 {
1077 if (remove) restart_timer( queue, timer );
1078 return timer;
1079 }
1080 }
1081 return NULL;
1082 }
1083
1084 /* add a timer */
1085 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1086 {
1087 struct timer *timer = mem_alloc( sizeof(*timer) );
1088 if (timer)
1089 {
1090 timer->rate = max( rate, 1 );
1091 timer->when = current_time + (timeout_t)timer->rate * 10000;
1092 link_timer( queue, timer );
1093 /* check if we replaced the next timer */
1094 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1095 }
1096 return timer;
1097 }
1098
1099 /* change the input key state for a given key */
1100 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1101 {
1102 if (down)
1103 {
1104 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1105 input->keystate[key] |= 0x80;
1106 }
1107 else input->keystate[key] &= ~0x80;
1108 }
1109
1110 /* update the input key state for a keyboard message */
1111 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1112 {
1113 unsigned char key;
1114 int down = 0;
1115
1116 switch (msg->msg)
1117 {
1118 case WM_LBUTTONDOWN:
1119 down = 1;
1120 /* fall through */
1121 case WM_LBUTTONUP:
1122 set_input_key_state( input, VK_LBUTTON, down );
1123 break;
1124 case WM_MBUTTONDOWN:
1125 down = 1;
1126 /* fall through */
1127 case WM_MBUTTONUP:
1128 set_input_key_state( input, VK_MBUTTON, down );
1129 break;
1130 case WM_RBUTTONDOWN:
1131 down = 1;
1132 /* fall through */
1133 case WM_RBUTTONUP:
1134 set_input_key_state( input, VK_RBUTTON, down );
1135 break;
1136 case WM_XBUTTONDOWN:
1137 down = 1;
1138 /* fall through */
1139 case WM_XBUTTONUP:
1140 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1141 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1142 break;
1143 case WM_KEYDOWN:
1144 case WM_SYSKEYDOWN:
1145 down = 1;
1146 /* fall through */
1147 case WM_KEYUP:
1148 case WM_SYSKEYUP:
1149 key = (unsigned char)msg->wparam;
1150 set_input_key_state( input, key, down );
1151 switch(key)
1152 {
1153 case VK_LCONTROL:
1154 case VK_RCONTROL:
1155 down = (input->keystate[VK_LCONTROL] | input->keystate[VK_RCONTROL]) & 0x80;
1156 set_input_key_state( input, VK_CONTROL, down );
1157 break;
1158 case VK_LMENU:
1159 case VK_RMENU:
1160 down = (input->keystate[VK_LMENU] | input->keystate[VK_RMENU]) & 0x80;
1161 set_input_key_state( input, VK_MENU, down );
1162 break;
1163 case VK_LSHIFT:
1164 case VK_RSHIFT:
1165 down = (input->keystate[VK_LSHIFT] | input->keystate[VK_RSHIFT]) & 0x80;
1166 set_input_key_state( input, VK_SHIFT, down );
1167 break;
1168 }
1169 break;
1170 }
1171 }
1172
1173 /* release the hardware message currently being processed by the given thread */
1174 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1175 int remove, user_handle_t new_win )
1176 {
1177 struct thread_input *input = queue->input;
1178 struct message *msg;
1179
1180 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1181 {
1182 if (msg->unique_id == hw_id) break;
1183 }
1184 if (&msg->entry == &input->msg_list) return; /* not found */
1185
1186 /* clear the queue bit for that message */
1187 if (remove || new_win)
1188 {
1189 struct message *other;
1190 int clr_bit;
1191
1192 clr_bit = get_hardware_msg_bit( msg );
1193 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1194 {
1195 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1196 {
1197 clr_bit = 0;
1198 break;
1199 }
1200 }
1201 if (clr_bit) clear_queue_bits( queue, clr_bit );
1202 }
1203
1204 if (new_win) /* set the new window */
1205 {
1206 struct thread *owner = get_window_thread( new_win );
1207 if (owner)
1208 {
1209 msg->win = new_win;
1210 if (owner->queue->input != input)
1211 {
1212 list_remove( &msg->entry );
1213 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1214 {
1215 free_message( msg );
1216 release_object( owner );
1217 return;
1218 }
1219 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1220 }
1221 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1222 remove = 0;
1223 release_object( owner );
1224 }
1225 }
1226 if (remove)
1227 {
1228 update_input_key_state( input, msg );
1229 list_remove( &msg->entry );
1230 free_message( msg );
1231 }
1232 }
1233
1234 /* find the window that should receive a given hardware message */
1235 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1236 struct hardware_msg_data *data, unsigned int *msg_code )
1237 {
1238 user_handle_t win = 0;
1239
1240 *msg_code = msg->msg;
1241 if (is_keyboard_msg( msg ))
1242 {
1243 if (input && !(win = input->focus))
1244 {
1245 win = input->active;
1246 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1247 }
1248 }
1249 else /* mouse message */
1250 {
1251 if (!input || !(win = input->capture))
1252 {
1253 if (!(win = msg->win) || !is_window_visible( win ))
1254 {
1255 if (input) win = window_from_point( input->desktop, data->x, data->y );
1256 }
1257 }
1258 }
1259 return win;
1260 }
1261
1262 /* queue a hardware message into a given thread input */
1263 static void queue_hardware_message( struct msg_queue *queue, struct message *msg,
1264 struct hardware_msg_data *data )
1265 {
1266 user_handle_t win;
1267 struct thread *thread;
1268 struct thread_input *input = queue ? queue->input : foreground_input;
1269 unsigned int msg_code;
1270
1271 last_input_time = get_tick_count();
1272 win = find_hardware_message_window( input, msg, data, &msg_code );
1273 if (!win || !(thread = get_window_thread(win)))
1274 {
1275 if (input) update_input_key_state( input, msg );
1276 free( msg );
1277 return;
1278 }
1279 input = thread->queue->input;
1280
1281 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1282 else
1283 {
1284 msg->unique_id = 0; /* will be set once we return it to the app */
1285 list_add_tail( &input->msg_list, &msg->entry );
1286 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1287 }
1288 release_object( thread );
1289 }
1290
1291 /* check message filter for a hardware message */
1292 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1293 user_handle_t filter_win, unsigned int first, unsigned int last )
1294 {
1295 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1296 {
1297 /* we can only test the window for a keyboard message since the
1298 * dest window for a mouse message depends on hittest */
1299 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1300 return 0;
1301 /* the message code is final for a keyboard message, we can simply check it */
1302 return check_msg_filter( msg_code, first, last );
1303 }
1304 else /* mouse message */
1305 {
1306 /* we need to check all possible values that the message can have in the end */
1307
1308 if (check_msg_filter( msg_code, first, last )) return 1;
1309 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1310
1311 /* all other messages can become non-client messages */
1312 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1313
1314 /* clicks can become double-clicks or non-client double-clicks */
1315 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1316 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1317 {
1318 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1319 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1320 }
1321 return 0;
1322 }
1323 }
1324
1325
1326 /* find a hardware message for the given queue */
1327 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1328 unsigned int first, unsigned int last, struct get_message_reply *reply )
1329 {
1330 struct thread_input *input = thread->queue->input;
1331 struct thread *win_thread;
1332 struct list *ptr;
1333 user_handle_t win;
1334 int clear_bits, got_one = 0;
1335 unsigned int msg_code;
1336
1337 ptr = list_head( &input->msg_list );
1338 if (hw_id)
1339 {
1340 while (ptr)
1341 {
1342 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1343 if (msg->unique_id == hw_id) break;
1344 ptr = list_next( &input->msg_list, ptr );
1345 }
1346 if (!ptr) ptr = list_head( &input->msg_list );
1347 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1348 }
1349
1350 if (ptr == list_head( &input->msg_list ))
1351 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1352 else
1353 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1354
1355 while (ptr)
1356 {
1357 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1358 struct hardware_msg_data *data = msg->data;
1359
1360 ptr = list_next( &input->msg_list, ptr );
1361 win = find_hardware_message_window( input, msg, data, &msg_code );
1362 if (!win || !(win_thread = get_window_thread( win )))
1363 {
1364 /* no window at all, remove it */
1365 update_input_key_state( input, msg );
1366 list_remove( &msg->entry );
1367 free_message( msg );
1368 continue;
1369 }
1370 if (win_thread != thread)
1371 {
1372 if (win_thread->queue->input == input)
1373 {
1374 /* wake the other thread */
1375 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1376 got_one = 1;
1377 }
1378 else
1379 {
1380 /* for another thread input, drop it */
1381 update_input_key_state( input, msg );
1382 list_remove( &msg->entry );
1383 free_message( msg );
1384 }
1385 release_object( win_thread );
1386 continue;
1387 }
1388 release_object( win_thread );
1389
1390 /* if we already got a message for another thread, or if it doesn't
1391 * match the filter we skip it */
1392 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1393 {
1394 clear_bits &= ~get_hardware_msg_bit( msg );
1395 continue;
1396 }
1397 /* now we can return it */
1398 if (!msg->unique_id) msg->unique_id = get_unique_id();
1399 reply->type = MSG_HARDWARE;
1400 reply->win = win;
1401 reply->msg = msg_code;
1402 reply->wparam = msg->wparam;
1403 reply->lparam = msg->lparam;
1404 reply->time = msg->time;
1405
1406 data->hw_id = msg->unique_id;
1407 set_reply_data( msg->data, msg->data_size );
1408 return 1;
1409 }
1410 /* nothing found, clear the hardware queue bits */
1411 clear_queue_bits( thread->queue, clear_bits );
1412 return 0;
1413 }
1414
1415 /* increment (or decrement if 'incr' is negative) the queue paint count */
1416 void inc_queue_paint_count( struct thread *thread, int incr )
1417 {
1418 struct msg_queue *queue = thread->queue;
1419
1420 assert( queue );
1421
1422 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1423
1424 if (queue->paint_count)
1425 set_queue_bits( queue, QS_PAINT );
1426 else
1427 clear_queue_bits( queue, QS_PAINT );
1428 }
1429
1430
1431 /* remove all messages and timers belonging to a certain window */
1432 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1433 {
1434 struct msg_queue *queue = thread->queue;
1435 struct list *ptr;
1436 int i;
1437
1438 if (!queue) return;
1439
1440 /* remove timers */
1441
1442 ptr = list_head( &queue->pending_timers );
1443 while (ptr)
1444 {
1445 struct list *next = list_next( &queue->pending_timers, ptr );
1446 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1447 if (timer->win == win) free_timer( queue, timer );
1448 ptr = next;
1449 }
1450 ptr = list_head( &queue->expired_timers );
1451 while (ptr)
1452 {
1453 struct list *next = list_next( &queue->expired_timers, ptr );
1454 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1455 if (timer->win == win) free_timer( queue, timer );
1456 ptr = next;
1457 }
1458
1459 /* remove messages */
1460 for (i = 0; i < NB_MSG_KINDS; i++)
1461 {
1462 struct list *ptr, *next;
1463
1464 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1465 {
1466 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1467 if (msg->win == win) remove_queue_message( queue, msg, i );
1468 }
1469 }
1470
1471 thread_input_cleanup_window( queue, win );
1472 }
1473
1474 /* post a message to a window; used by socket handling */
1475 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1476 {
1477 struct message *msg;
1478 struct thread *thread = get_window_thread( win );
1479
1480 if (!thread) return;
1481
1482 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1483 {
1484 msg->type = MSG_POSTED;
1485 msg->win = get_user_full_handle( win );
1486 msg->msg = message;
1487 msg->wparam = wparam;
1488 msg->lparam = lparam;
1489 msg->time = get_tick_count();
1490 msg->result = NULL;
1491 msg->data = NULL;
1492 msg->data_size = 0;
1493
1494 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1495 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1496 }
1497 release_object( thread );
1498 }
1499
1500 /* post a win event */
1501 void post_win_event( struct thread *thread, unsigned int event,
1502 user_handle_t win, unsigned int object_id,
1503 unsigned int child_id, client_ptr_t hook_proc,
1504 const WCHAR *module, data_size_t module_size,
1505 user_handle_t hook)
1506 {
1507 struct message *msg;
1508
1509 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1510 {
1511 struct winevent_msg_data *data;
1512
1513 msg->type = MSG_WINEVENT;
1514 msg->win = get_user_full_handle( win );
1515 msg->msg = event;
1516 msg->wparam = object_id;
1517 msg->lparam = child_id;
1518 msg->time = get_tick_count();
1519 msg->result = NULL;
1520
1521 if ((data = malloc( sizeof(*data) + module_size )))
1522 {
1523 data->hook = hook;
1524 data->tid = get_thread_id( current );
1525 data->hook_proc = hook_proc;
1526 memcpy( data + 1, module, module_size );
1527
1528 msg->data = data;
1529 msg->data_size = sizeof(*data) + module_size;
1530
1531 if (debug_level > 1)
1532 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1533 get_thread_id(thread), event, win, object_id, child_id );
1534 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1535 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1536 }
1537 else
1538 free( msg );
1539 }
1540 }
1541
1542
1543 /* check if the thread owning the window is hung */
1544 DECL_HANDLER(is_window_hung)
1545 {
1546 struct thread *thread;
1547
1548 thread = get_window_thread( req->win );
1549 if (thread)
1550 {
1551 reply->is_hung = is_queue_hung( thread->queue );
1552 release_object( thread );
1553 }
1554 else reply->is_hung = 0;
1555 }
1556
1557
1558 /* get the message queue of the current thread */
1559 DECL_HANDLER(get_msg_queue)
1560 {
1561 struct msg_queue *queue = get_current_queue();
1562
1563 reply->handle = 0;
1564 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1565 }
1566
1567
1568 /* set the file descriptor associated to the current thread queue */
1569 DECL_HANDLER(set_queue_fd)
1570 {
1571 struct msg_queue *queue = get_current_queue();
1572 struct file *file;
1573 int unix_fd;
1574
1575 if (queue->fd) /* fd can only be set once */
1576 {
1577 set_error( STATUS_ACCESS_DENIED );
1578 return;
1579 }
1580 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1581
1582 if ((unix_fd = get_file_unix_fd( file )) != -1)
1583 {
1584 if ((unix_fd = dup( unix_fd )) != -1)
1585 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1586 else
1587 file_set_error();
1588 }
1589 release_object( file );
1590 }
1591
1592
1593 /* set the current message queue wakeup mask */
1594 DECL_HANDLER(set_queue_mask)
1595 {
1596 struct msg_queue *queue = get_current_queue();
1597
1598 if (queue)
1599 {
1600 queue->wake_mask = req->wake_mask;
1601 queue->changed_mask = req->changed_mask;
1602 reply->wake_bits = queue->wake_bits;
1603 reply->changed_bits = queue->changed_bits;
1604 if (is_signaled( queue ))
1605 {
1606 /* if skip wait is set, do what would have been done in the subsequent wait */
1607 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1608 else wake_up( &queue->obj, 0 );
1609 }
1610 }
1611 }
1612
1613
1614 /* get the current message queue status */
1615 DECL_HANDLER(get_queue_status)
1616 {
1617 struct msg_queue *queue = current->queue;
1618 if (queue)
1619 {
1620 reply->wake_bits = queue->wake_bits;
1621 reply->changed_bits = queue->changed_bits;
1622 if (req->clear) queue->changed_bits = 0;
1623 }
1624 else reply->wake_bits = reply->changed_bits = 0;
1625 }
1626
1627
1628 /* send a message to a thread queue */
1629 DECL_HANDLER(send_message)
1630 {
1631 struct message *msg;
1632 struct msg_queue *send_queue = get_current_queue();
1633 struct msg_queue *recv_queue = NULL;
1634 struct thread *thread = NULL;
1635
1636 if (!(thread = get_thread_from_id( req->id ))) return;
1637
1638 if (!(recv_queue = thread->queue))
1639 {
1640 set_error( STATUS_INVALID_PARAMETER );
1641 release_object( thread );
1642 return;
1643 }
1644 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1645 {
1646 set_error( STATUS_TIMEOUT );
1647 release_object( thread );
1648 return;
1649 }
1650
1651 if ((msg = mem_alloc( sizeof(*msg) )))
1652 {
1653 msg->type = req->type;
1654 msg->win = get_user_full_handle( req->win );
1655 msg->msg = req->msg;
1656 msg->wparam = req->wparam;
1657 msg->lparam = req->lparam;
1658 msg->time = get_tick_count();
1659 msg->result = NULL;
1660 msg->data = NULL;
1661 msg->data_size = get_req_data_size();
1662
1663 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1664 {
1665 free( msg );
1666 release_object( thread );
1667 return;
1668 }
1669
1670 switch(msg->type)
1671 {
1672 case MSG_OTHER_PROCESS:
1673 case MSG_ASCII:
1674 case MSG_UNICODE:
1675 case MSG_CALLBACK:
1676 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1677 {
1678 free_message( msg );
1679 break;
1680 }
1681 /* fall through */
1682 case MSG_NOTIFY:
1683 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1684 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1685 break;
1686 case MSG_POSTED:
1687 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1688 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1689 break;
1690 case MSG_HARDWARE: /* should use send_hardware_message instead */
1691 case MSG_CALLBACK_RESULT: /* cannot send this one */
1692 default:
1693 set_error( STATUS_INVALID_PARAMETER );
1694 free( msg );
1695 break;
1696 }
1697 }
1698 release_object( thread );
1699 }
1700
1701 /* send a hardware message to a thread queue */
1702 DECL_HANDLER(send_hardware_message)
1703 {
1704 struct message *msg;
1705 struct msg_queue *recv_queue = NULL;
1706 struct thread *thread = NULL;
1707 struct hardware_msg_data *data;
1708
1709 if (req->id)
1710 {
1711 if (!(thread = get_thread_from_id( req->id ))) return;
1712 }
1713
1714 if (thread && !(recv_queue = thread->queue))
1715 {
1716 set_error( STATUS_INVALID_PARAMETER );
1717 release_object( thread );
1718 return;
1719 }
1720
1721 if (!(data = mem_alloc( sizeof(*data) )))
1722 {
1723 if (thread) release_object( thread );
1724 return;
1725 }
1726 memset( data, 0, sizeof(*data) );
1727 data->x = req->x;
1728 data->y = req->y;
1729 data->info = req->info;
1730
1731 if ((msg = mem_alloc( sizeof(*msg) )))
1732 {
1733 msg->type = MSG_HARDWARE;
1734 msg->win = get_user_full_handle( req->win );
1735 msg->msg = req->msg;
1736 msg->wparam = req->wparam;
1737 msg->lparam = req->lparam;
1738 msg->time = req->time;
1739 msg->result = NULL;
1740 msg->data = data;
1741 msg->data_size = sizeof(*data);
1742 queue_hardware_message( recv_queue, msg, data );
1743 }
1744 else free( data );
1745
1746 if (thread) release_object( thread );
1747 }
1748
1749 /* post a quit message to the current queue */
1750 DECL_HANDLER(post_quit_message)
1751 {
1752 struct msg_queue *queue = get_current_queue();
1753
1754 if (!queue)
1755 return;
1756
1757 queue->quit_message = 1;
1758 queue->exit_code = req->exit_code;
1759 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1760 }
1761
1762 /* get a message from the current queue */
1763 DECL_HANDLER(get_message)
1764 {
1765 struct timer *timer;
1766 struct list *ptr;
1767 struct msg_queue *queue = get_current_queue();
1768 user_handle_t get_win = get_user_full_handle( req->get_win );
1769 unsigned int filter = req->flags >> 16;
1770
1771 reply->active_hooks = get_active_hooks();
1772
1773 if (!queue) return;
1774 queue->last_get_msg = current_time;
1775 if (!filter) filter = QS_ALLINPUT;
1776
1777 /* first check for sent messages */
1778 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1779 {
1780 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1781 receive_message( queue, msg, reply );
1782 return;
1783 }
1784
1785 /* clear changed bits so we can wait on them if we don't find a message */
1786 if (filter & QS_POSTMESSAGE)
1787 {
1788 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1789 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1790 }
1791 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1792 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1793
1794 /* then check for posted messages */
1795 if ((filter & QS_POSTMESSAGE) &&
1796 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1797 return;
1798
1799 /* only check for quit messages if not posted messages pending.
1800 * note: the quit message isn't filtered */
1801 if (get_quit_message( queue, req->flags, reply ))
1802 return;
1803
1804 /* then check for any raw hardware message */
1805 if ((filter & QS_INPUT) &&
1806 filter_contains_hw_range( req->get_first, req->get_last ) &&
1807 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1808 return;
1809
1810 /* now check for WM_PAINT */
1811 if ((filter & QS_PAINT) &&
1812 queue->paint_count &&
1813 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1814 (reply->win = find_window_to_repaint( get_win, current )))
1815 {
1816 reply->type = MSG_POSTED;
1817 reply->msg = WM_PAINT;
1818 reply->wparam = 0;
1819 reply->lparam = 0;
1820 reply->time = get_tick_count();
1821 return;
1822 }
1823
1824 /* now check for timer */
1825 if ((filter & QS_TIMER) &&
1826 (timer = find_expired_timer( queue, get_win, req->get_first,
1827 req->get_last, (req->flags & PM_REMOVE) )))
1828 {
1829 reply->type = MSG_POSTED;
1830 reply->win = timer->win;
1831 reply->msg = timer->msg;
1832 reply->wparam = timer->id;
1833 reply->lparam = timer->lparam;
1834 reply->time = get_tick_count();
1835 return;
1836 }
1837
1838 queue->wake_mask = req->wake_mask;
1839 queue->changed_mask = req->changed_mask;
1840 set_error( STATUS_PENDING ); /* FIXME */
1841 }
1842
1843
1844 /* reply to a sent message */
1845 DECL_HANDLER(reply_message)
1846 {
1847 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1848 else if (current->queue->recv_result)
1849 reply_message( current->queue, req->result, 0, req->remove,
1850 get_req_data(), get_req_data_size() );
1851 }
1852
1853
1854 /* accept the current hardware message */
1855 DECL_HANDLER(accept_hardware_message)
1856 {
1857 if (current->queue)
1858 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1859 else
1860 set_error( STATUS_ACCESS_DENIED );
1861 }
1862
1863
1864 /* retrieve the reply for the last message sent */
1865 DECL_HANDLER(get_message_reply)
1866 {
1867 struct message_result *result;
1868 struct list *entry;
1869 struct msg_queue *queue = current->queue;
1870
1871 if (queue)
1872 {
1873 set_error( STATUS_PENDING );
1874 reply->result = 0;
1875
1876 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1877
1878 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1879 if (result->replied || req->cancel)
1880 {
1881 if (result->replied)
1882 {
1883 reply->result = result->result;
1884 set_error( result->error );
1885 if (result->data)
1886 {
1887 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1888 set_reply_data_ptr( result->data, data_len );
1889 result->data = NULL;
1890 result->data_size = 0;
1891 }
1892 }
1893 remove_result_from_sender( result );
1894
1895 entry = list_head( &queue->send_result );
1896 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1897 else
1898 {
1899 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1900 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1901 }
1902 }
1903 }
1904 else set_error( STATUS_ACCESS_DENIED );
1905 }
1906
1907
1908 /* set a window timer */
1909 DECL_HANDLER(set_win_timer)
1910 {
1911 struct timer *timer;
1912 struct msg_queue *queue;
1913 struct thread *thread = NULL;
1914 user_handle_t win = 0;
1915 lparam_t id = req->id;
1916
1917 if (req->win)
1918 {
1919 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1920 {
1921 set_error( STATUS_INVALID_HANDLE );
1922 return;
1923 }
1924 if (thread->process != current->process)
1925 {
1926 release_object( thread );
1927 set_error( STATUS_ACCESS_DENIED );
1928 return;
1929 }
1930 queue = thread->queue;
1931 /* remove it if it existed already */
1932 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1933 }
1934 else
1935 {
1936 queue = get_current_queue();
1937 /* look for a timer with this id */
1938 if (id && (timer = find_timer( queue, 0, req->msg, id )))
1939 {
1940 /* free and reuse id */
1941 free_timer( queue, timer );
1942 }
1943 else
1944 {
1945 /* find a free id for it */
1946 do
1947 {
1948 id = queue->next_timer_id;
1949 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
1950 }
1951 while (find_timer( queue, 0, req->msg, id ));
1952 }
1953 }
1954
1955 if ((timer = set_timer( queue, req->rate )))
1956 {
1957 timer->win = win;
1958 timer->msg = req->msg;
1959 timer->id = id;
1960 timer->lparam = req->lparam;
1961 reply->id = id;
1962 }
1963 if (thread) release_object( thread );
1964 }
1965
1966 /* kill a window timer */
1967 DECL_HANDLER(kill_win_timer)
1968 {
1969 struct timer *timer;
1970 struct thread *thread;
1971 user_handle_t win = 0;
1972
1973 if (req->win)
1974 {
1975 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1976 {
1977 set_error( STATUS_INVALID_HANDLE );
1978 return;
1979 }
1980 if (thread->process != current->process)
1981 {
1982 release_object( thread );
1983 set_error( STATUS_ACCESS_DENIED );
1984 return;
1985 }
1986 }
1987 else thread = (struct thread *)grab_object( current );
1988
1989 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1990 free_timer( thread->queue, timer );
1991 else
1992 set_error( STATUS_INVALID_PARAMETER );
1993
1994 release_object( thread );
1995 }
1996
1997
1998 /* attach (or detach) thread inputs */
1999 DECL_HANDLER(attach_thread_input)
2000 {
2001 struct thread *thread_from = get_thread_from_id( req->tid_from );
2002 struct thread *thread_to = get_thread_from_id( req->tid_to );
2003
2004 if (!thread_from || !thread_to)
2005 {
2006 if (thread_from) release_object( thread_from );
2007 if (thread_to) release_object( thread_to );
2008 return;
2009 }
2010 if (thread_from != thread_to)
2011 {
2012 if (req->attach) attach_thread_input( thread_from, thread_to );
2013 else
2014 {
2015 if (thread_from->queue && thread_to->queue &&
2016 thread_from->queue->input == thread_to->queue->input)
2017 detach_thread_input( thread_from );
2018 else
2019 set_error( STATUS_ACCESS_DENIED );
2020 }
2021 }
2022 else set_error( STATUS_ACCESS_DENIED );
2023 release_object( thread_from );
2024 release_object( thread_to );
2025 }
2026
2027
2028 /* get thread input data */
2029 DECL_HANDLER(get_thread_input)
2030 {
2031 struct thread *thread = NULL;
2032 struct thread_input *input;
2033
2034 if (req->tid)
2035 {
2036 if (!(thread = get_thread_from_id( req->tid ))) return;
2037 input = thread->queue ? thread->queue->input : NULL;
2038 }
2039 else input = foreground_input; /* get the foreground thread info */
2040
2041 if (input)
2042 {
2043 reply->focus = input->focus;
2044 reply->capture = input->capture;
2045 reply->active = input->active;
2046 reply->menu_owner = input->menu_owner;
2047 reply->move_size = input->move_size;
2048 reply->caret = input->caret;
2049 reply->rect = input->caret_rect;
2050 }
2051 else
2052 {
2053 reply->focus = 0;
2054 reply->capture = 0;
2055 reply->active = 0;
2056 reply->menu_owner = 0;
2057 reply->move_size = 0;
2058 reply->caret = 0;
2059 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2060 }
2061 /* foreground window is active window of foreground thread */
2062 reply->foreground = foreground_input ? foreground_input->active : 0;
2063 if (thread) release_object( thread );
2064 }
2065
2066
2067 /* retrieve queue keyboard state for a given thread */
2068 DECL_HANDLER(get_key_state)
2069 {
2070 struct thread *thread;
2071 struct thread_input *input;
2072
2073 if (!(thread = get_thread_from_id( req->tid ))) return;
2074 input = thread->queue ? thread->queue->input : NULL;
2075 if (input)
2076 {
2077 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2078 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2079 }
2080 release_object( thread );
2081 }
2082
2083
2084 /* set queue keyboard state for a given thread */
2085 DECL_HANDLER(set_key_state)
2086 {
2087 struct thread *thread = NULL;
2088 struct thread_input *input;
2089
2090 if (!(thread = get_thread_from_id( req->tid ))) return;
2091 input = thread->queue ? thread->queue->input : NULL;
2092 if (input)
2093 {
2094 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2095 if (size) memcpy( input->keystate, get_req_data(), size );
2096 }
2097 release_object( thread );
2098 }
2099
2100
2101 /* set the system foreground window */
2102 DECL_HANDLER(set_foreground_window)
2103 {
2104 struct thread *thread;
2105 struct msg_queue *queue = get_current_queue();
2106
2107 reply->previous = foreground_input ? foreground_input->active : 0;
2108 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2109 reply->send_msg_new = FALSE;
2110
2111 if (is_top_level_window( req->handle ) &&
2112 ((thread = get_window_thread( req->handle ))))
2113 {
2114 foreground_input = thread->queue->input;
2115 reply->send_msg_new = (foreground_input != queue->input);
2116 release_object( thread );
2117 }
2118 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2119 }
2120
2121
2122 /* set the current thread focus window */
2123 DECL_HANDLER(set_focus_window)
2124 {
2125 struct msg_queue *queue = get_current_queue();
2126
2127 reply->previous = 0;
2128 if (queue && check_queue_input_window( queue, req->handle ))
2129 {
2130 reply->previous = queue->input->focus;
2131 queue->input->focus = get_user_full_handle( req->handle );
2132 }
2133 }
2134
2135
2136 /* set the current thread active window */
2137 DECL_HANDLER(set_active_window)
2138 {
2139 struct msg_queue *queue = get_current_queue();
2140
2141 reply->previous = 0;
2142 if (queue && check_queue_input_window( queue, req->handle ))
2143 {
2144 if (!req->handle || make_window_active( req->handle ))
2145 {
2146 reply->previous = queue->input->active;
2147 queue->input->active = get_user_full_handle( req->handle );
2148 }
2149 else set_error( STATUS_INVALID_HANDLE );
2150 }
2151 }
2152
2153
2154 /* set the current thread capture window */
2155 DECL_HANDLER(set_capture_window)
2156 {
2157 struct msg_queue *queue = get_current_queue();
2158
2159 reply->previous = reply->full_handle = 0;
2160 if (queue && check_queue_input_window( queue, req->handle ))
2161 {
2162 struct thread_input *input = queue->input;
2163
2164 reply->previous = input->capture;
2165 input->capture = get_user_full_handle( req->handle );
2166 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2167 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2168 reply->full_handle = input->capture;
2169 }
2170 }
2171
2172
2173 /* Set the current thread caret window */
2174 DECL_HANDLER(set_caret_window)
2175 {
2176 struct msg_queue *queue = get_current_queue();
2177
2178 reply->previous = 0;
2179 if (queue && check_queue_input_window( queue, req->handle ))
2180 {
2181 struct thread_input *input = queue->input;
2182
2183 reply->previous = input->caret;
2184 reply->old_rect = input->caret_rect;
2185 reply->old_hide = input->caret_hide;
2186 reply->old_state = input->caret_state;
2187
2188 set_caret_window( input, get_user_full_handle(req->handle) );
2189 input->caret_rect.right = input->caret_rect.left + req->width;
2190 input->caret_rect.bottom = input->caret_rect.top + req->height;
2191 }
2192 }
2193
2194
2195 /* Set the current thread caret information */
2196 DECL_HANDLER(set_caret_info)
2197 {
2198 struct msg_queue *queue = get_current_queue();
2199 struct thread_input *input;
2200
2201 if (!queue) return;
2202 input = queue->input;
2203 reply->full_handle = input->caret;
2204 reply->old_rect = input->caret_rect;
2205 reply->old_hide = input->caret_hide;
2206 reply->old_state = input->caret_state;
2207
2208 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2209 {
2210 set_error( STATUS_ACCESS_DENIED );
2211 return;
2212 }
2213 if (req->flags & SET_CARET_POS)
2214 {
2215 input->caret_rect.right += req->x - input->caret_rect.left;
2216 input->caret_rect.bottom += req->y - input->caret_rect.top;
2217 input->caret_rect.left = req->x;
2218 input->caret_rect.top = req->y;
2219 }
2220 if (req->flags & SET_CARET_HIDE)
2221 {
2222 input->caret_hide += req->hide;
2223 if (input->caret_hide < 0) input->caret_hide = 0;
2224 }
2225 if (req->flags & SET_CARET_STATE)
2226 {
2227 if (req->state == -1) input->caret_state = !input->caret_state;
2228 else input->caret_state = !!req->state;
2229 }
2230 }
2231
2232
2233 /* get the time of the last input event */
2234 DECL_HANDLER(get_last_input_time)
2235 {
2236 reply->time = last_input_time;
2237 }
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