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d3dx9: Implement D3DXLoadSurfaceFromFile.
[wine/multimedia.git] / server / queue.c
blobc5841c939be87fb165bff0d078edbbe566a412ef
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 static int match_window( user_handle_t win, user_handle_t msg_win )
652 {
653 if (!win) return 1;
654 if (win == (user_handle_t)-1) return !msg_win;
655 if (msg_win == win) return 1;
656 return is_child_window( win, msg_win );
657 }
658
659 /* retrieve a posted message */
660 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
661 unsigned int first, unsigned int last, unsigned int flags,
662 struct get_message_reply *reply )
663 {
664 struct message *msg;
665
666 /* check against the filters */
667 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
668 {
669 if (!match_window( win, msg->win )) continue;
670 if (!check_msg_filter( msg->msg, first, last )) continue;
671 goto found; /* found one */
672 }
673 return 0;
674
675 /* return it to the app */
676 found:
677 reply->total = msg->data_size;
678 if (msg->data_size > get_reply_max_size())
679 {
680 set_error( STATUS_BUFFER_OVERFLOW );
681 return 1;
682 }
683 reply->type = msg->type;
684 reply->win = msg->win;
685 reply->msg = msg->msg;
686 reply->wparam = msg->wparam;
687 reply->lparam = msg->lparam;
688 reply->time = msg->time;
689
690 if (flags & PM_REMOVE)
691 {
692 if (msg->data)
693 {
694 set_reply_data_ptr( msg->data, msg->data_size );
695 msg->data = NULL;
696 msg->data_size = 0;
697 }
698 remove_queue_message( queue, msg, POST_MESSAGE );
699 }
700 else if (msg->data) set_reply_data( msg->data, msg->data_size );
701
702 return 1;
703 }
704
705 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
706 struct get_message_reply *reply )
707 {
708 if (queue->quit_message)
709 {
710 reply->total = 0;
711 reply->type = MSG_POSTED;
712 reply->win = 0;
713 reply->msg = WM_QUIT;
714 reply->wparam = queue->exit_code;
715 reply->lparam = 0;
716 reply->time = get_tick_count();
717
718 if (flags & PM_REMOVE)
719 {
720 queue->quit_message = 0;
721 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
722 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
723 }
724 return 1;
725 }
726 else
727 return 0;
728 }
729
730 /* empty a message list and free all the messages */
731 static void empty_msg_list( struct list *list )
732 {
733 struct list *ptr;
734
735 while ((ptr = list_head( list )) != NULL)
736 {
737 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
738 list_remove( &msg->entry );
739 free_message( msg );
740 }
741 }
742
743 /* cleanup all pending results when deleting a queue */
744 static void cleanup_results( struct msg_queue *queue )
745 {
746 struct list *entry;
747
748 while ((entry = list_head( &queue->send_result )) != NULL)
749 {
750 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
751 }
752
753 while ((entry = list_head( &queue->callback_result )) != NULL)
754 {
755 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
756 }
757
758 while (queue->recv_result)
759 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
760 }
761
762 /* check if the thread owning the queue is hung (not checking for messages) */
763 static int is_queue_hung( struct msg_queue *queue )
764 {
765 struct wait_queue_entry *entry;
766
767 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
768 return 0; /* less than 5 seconds since last get message -> not hung */
769
770 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
771 {
772 if (entry->thread->queue == queue)
773 return 0; /* thread is waiting on queue -> not hung */
774 }
775 return 1;
776 }
777
778 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
779 {
780 struct msg_queue *queue = (struct msg_queue *)obj;
781 struct process *process = entry->thread->process;
782
783 /* a thread can only wait on its own queue */
784 if (entry->thread->queue != queue)
785 {
786 set_error( STATUS_ACCESS_DENIED );
787 return 0;
788 }
789 /* if waiting on the main process queue, set the idle event */
790 if (process->queue == queue)
791 {
792 if (process->idle_event) set_event( process->idle_event );
793 }
794 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
795 set_fd_events( queue->fd, POLLIN );
796 add_queue( obj, entry );
797 return 1;
798 }
799
800 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
801 {
802 struct msg_queue *queue = (struct msg_queue *)obj;
803 struct process *process = entry->thread->process;
804
805 remove_queue( obj, entry );
806 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
807 set_fd_events( queue->fd, 0 );
808
809 assert( entry->thread->queue == queue );
810
811 /* if waiting on the main process queue, reset the idle event */
812 if (process->queue == queue)
813 {
814 if (process->idle_event) reset_event( process->idle_event );
815 }
816 }
817
818 static void msg_queue_dump( struct object *obj, int verbose )
819 {
820 struct msg_queue *queue = (struct msg_queue *)obj;
821 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
822 queue->wake_bits, queue->wake_mask );
823 }
824
825 static int msg_queue_signaled( struct object *obj, struct thread *thread )
826 {
827 struct msg_queue *queue = (struct msg_queue *)obj;
828 int ret = 0;
829
830 if (queue->fd)
831 {
832 if ((ret = check_fd_events( queue->fd, POLLIN )))
833 /* stop waiting on select() if we are signaled */
834 set_fd_events( queue->fd, 0 );
835 else if (!list_empty( &obj->wait_queue ))
836 /* restart waiting on poll() if we are no longer signaled */
837 set_fd_events( queue->fd, POLLIN );
838 }
839 return ret || is_signaled( queue );
840 }
841
842 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
843 {
844 struct msg_queue *queue = (struct msg_queue *)obj;
845 queue->wake_mask = 0;
846 queue->changed_mask = 0;
847 return 0; /* Not abandoned */
848 }
849
850 static void msg_queue_destroy( struct object *obj )
851 {
852 struct msg_queue *queue = (struct msg_queue *)obj;
853 struct list *ptr;
854 int i;
855
856 cleanup_results( queue );
857 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
858
859 while ((ptr = list_head( &queue->pending_timers )))
860 {
861 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
862 list_remove( &timer->entry );
863 free( timer );
864 }
865 while ((ptr = list_head( &queue->expired_timers )))
866 {
867 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
868 list_remove( &timer->entry );
869 free( timer );
870 }
871 if (queue->timeout) remove_timeout_user( queue->timeout );
872 if (queue->input) release_object( queue->input );
873 if (queue->hooks) release_object( queue->hooks );
874 if (queue->fd) release_object( queue->fd );
875 }
876
877 static void msg_queue_poll_event( struct fd *fd, int event )
878 {
879 struct msg_queue *queue = get_fd_user( fd );
880 assert( queue->obj.ops == &msg_queue_ops );
881
882 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
883 else set_fd_events( queue->fd, 0 );
884 wake_up( &queue->obj, 0 );
885 }
886
887 static void thread_input_dump( struct object *obj, int verbose )
888 {
889 struct thread_input *input = (struct thread_input *)obj;
890 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
891 input->focus, input->capture, input->active );
892 }
893
894 static void thread_input_destroy( struct object *obj )
895 {
896 struct thread_input *input = (struct thread_input *)obj;
897
898 if (foreground_input == input) foreground_input = NULL;
899 empty_msg_list( &input->msg_list );
900 if (input->desktop) release_object( input->desktop );
901 }
902
903 /* fix the thread input data when a window is destroyed */
904 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
905 {
906 struct thread_input *input = queue->input;
907
908 if (window == input->focus) input->focus = 0;
909 if (window == input->capture) input->capture = 0;
910 if (window == input->active) input->active = 0;
911 if (window == input->menu_owner) input->menu_owner = 0;
912 if (window == input->move_size) input->move_size = 0;
913 if (window == input->caret) set_caret_window( input, 0 );
914 }
915
916 /* check if the specified window can be set in the input data of a given queue */
917 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
918 {
919 struct thread *thread;
920 int ret = 0;
921
922 if (!window) return 1; /* we can always clear the data */
923
924 if ((thread = get_window_thread( window )))
925 {
926 ret = (queue->input == thread->queue->input);
927 if (!ret) set_error( STATUS_ACCESS_DENIED );
928 release_object( thread );
929 }
930 else set_error( STATUS_INVALID_HANDLE );
931
932 return ret;
933 }
934
935 /* make sure the specified thread has a queue */
936 int init_thread_queue( struct thread *thread )
937 {
938 if (thread->queue) return 1;
939 return (create_msg_queue( thread, NULL ) != NULL);
940 }
941
942 /* attach two thread input data structures */
943 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
944 {
945 struct desktop *desktop;
946 struct thread_input *input;
947
948 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
949 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
950 input = (struct thread_input *)grab_object( thread_to->queue->input );
951 if (input->desktop != desktop)
952 {
953 set_error( STATUS_ACCESS_DENIED );
954 release_object( input );
955 release_object( desktop );
956 return 0;
957 }
958 release_object( desktop );
959
960 if (thread_from->queue)
961 {
962 release_thread_input( thread_from );
963 thread_from->queue->input = input;
964 }
965 else
966 {
967 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
968 }
969 memset( input->keystate, 0, sizeof(input->keystate) );
970 return 1;
971 }
972
973 /* detach two thread input data structures */
974 void detach_thread_input( struct thread *thread_from )
975 {
976 struct thread_input *input;
977
978 if ((input = create_thread_input( thread_from )))
979 {
980 release_thread_input( thread_from );
981 thread_from->queue->input = input;
982 }
983 }
984
985
986 /* set the next timer to expire */
987 static void set_next_timer( struct msg_queue *queue )
988 {
989 struct list *ptr;
990
991 if (queue->timeout)
992 {
993 remove_timeout_user( queue->timeout );
994 queue->timeout = NULL;
995 }
996 if ((ptr = list_head( &queue->pending_timers )))
997 {
998 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
999 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1000 }
1001 /* set/clear QS_TIMER bit */
1002 if (list_empty( &queue->expired_timers ))
1003 clear_queue_bits( queue, QS_TIMER );
1004 else
1005 set_queue_bits( queue, QS_TIMER );
1006 }
1007
1008 /* find a timer from its window and id */
1009 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1010 unsigned int msg, lparam_t id )
1011 {
1012 struct list *ptr;
1013
1014 /* we need to search both lists */
1015
1016 LIST_FOR_EACH( ptr, &queue->pending_timers )
1017 {
1018 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1019 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1020 }
1021 LIST_FOR_EACH( ptr, &queue->expired_timers )
1022 {
1023 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1024 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1025 }
1026 return NULL;
1027 }
1028
1029 /* callback for the next timer expiration */
1030 static void timer_callback( void *private )
1031 {
1032 struct msg_queue *queue = private;
1033 struct list *ptr;
1034
1035 queue->timeout = NULL;
1036 /* move on to the next timer */
1037 ptr = list_head( &queue->pending_timers );
1038 list_remove( ptr );
1039 list_add_tail( &queue->expired_timers, ptr );
1040 set_next_timer( queue );
1041 }
1042
1043 /* link a timer at its rightful place in the queue list */
1044 static void link_timer( struct msg_queue *queue, struct timer *timer )
1045 {
1046 struct list *ptr;
1047
1048 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1049 {
1050 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1051 if (t->when >= timer->when) break;
1052 }
1053 list_add_before( ptr, &timer->entry );
1054 }
1055
1056 /* remove a timer from the queue timer list and free it */
1057 static void free_timer( struct msg_queue *queue, struct timer *timer )
1058 {
1059 list_remove( &timer->entry );
1060 free( timer );
1061 set_next_timer( queue );
1062 }
1063
1064 /* restart an expired timer */
1065 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1066 {
1067 list_remove( &timer->entry );
1068 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1069 link_timer( queue, timer );
1070 set_next_timer( queue );
1071 }
1072
1073 /* find an expired timer matching the filtering parameters */
1074 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1075 unsigned int get_first, unsigned int get_last,
1076 int remove )
1077 {
1078 struct list *ptr;
1079
1080 LIST_FOR_EACH( ptr, &queue->expired_timers )
1081 {
1082 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1083 if (win && timer->win != win) continue;
1084 if (check_msg_filter( timer->msg, get_first, get_last ))
1085 {
1086 if (remove) restart_timer( queue, timer );
1087 return timer;
1088 }
1089 }
1090 return NULL;
1091 }
1092
1093 /* add a timer */
1094 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1095 {
1096 struct timer *timer = mem_alloc( sizeof(*timer) );
1097 if (timer)
1098 {
1099 timer->rate = max( rate, 1 );
1100 timer->when = current_time + (timeout_t)timer->rate * 10000;
1101 link_timer( queue, timer );
1102 /* check if we replaced the next timer */
1103 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1104 }
1105 return timer;
1106 }
1107
1108 /* change the input key state for a given key */
1109 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1110 {
1111 if (down)
1112 {
1113 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1114 input->keystate[key] |= 0x80;
1115 }
1116 else input->keystate[key] &= ~0x80;
1117 }
1118
1119 /* update the input key state for a keyboard message */
1120 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1121 {
1122 unsigned char key;
1123 int down = 0;
1124
1125 switch (msg->msg)
1126 {
1127 case WM_LBUTTONDOWN:
1128 down = 1;
1129 /* fall through */
1130 case WM_LBUTTONUP:
1131 set_input_key_state( input, VK_LBUTTON, down );
1132 break;
1133 case WM_MBUTTONDOWN:
1134 down = 1;
1135 /* fall through */
1136 case WM_MBUTTONUP:
1137 set_input_key_state( input, VK_MBUTTON, down );
1138 break;
1139 case WM_RBUTTONDOWN:
1140 down = 1;
1141 /* fall through */
1142 case WM_RBUTTONUP:
1143 set_input_key_state( input, VK_RBUTTON, down );
1144 break;
1145 case WM_XBUTTONDOWN:
1146 down = 1;
1147 /* fall through */
1148 case WM_XBUTTONUP:
1149 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1150 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1151 break;
1152 case WM_KEYDOWN:
1153 case WM_SYSKEYDOWN:
1154 down = 1;
1155 /* fall through */
1156 case WM_KEYUP:
1157 case WM_SYSKEYUP:
1158 key = (unsigned char)msg->wparam;
1159 set_input_key_state( input, key, down );
1160 switch(key)
1161 {
1162 case VK_LCONTROL:
1163 case VK_RCONTROL:
1164 down = (input->keystate[VK_LCONTROL] | input->keystate[VK_RCONTROL]) & 0x80;
1165 set_input_key_state( input, VK_CONTROL, down );
1166 break;
1167 case VK_LMENU:
1168 case VK_RMENU:
1169 down = (input->keystate[VK_LMENU] | input->keystate[VK_RMENU]) & 0x80;
1170 set_input_key_state( input, VK_MENU, down );
1171 break;
1172 case VK_LSHIFT:
1173 case VK_RSHIFT:
1174 down = (input->keystate[VK_LSHIFT] | input->keystate[VK_RSHIFT]) & 0x80;
1175 set_input_key_state( input, VK_SHIFT, down );
1176 break;
1177 }
1178 break;
1179 }
1180 }
1181
1182 /* release the hardware message currently being processed by the given thread */
1183 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1184 int remove, user_handle_t new_win )
1185 {
1186 struct thread_input *input = queue->input;
1187 struct message *msg;
1188
1189 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1190 {
1191 if (msg->unique_id == hw_id) break;
1192 }
1193 if (&msg->entry == &input->msg_list) return; /* not found */
1194
1195 /* clear the queue bit for that message */
1196 if (remove || new_win)
1197 {
1198 struct message *other;
1199 int clr_bit;
1200
1201 clr_bit = get_hardware_msg_bit( msg );
1202 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1203 {
1204 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1205 {
1206 clr_bit = 0;
1207 break;
1208 }
1209 }
1210 if (clr_bit) clear_queue_bits( queue, clr_bit );
1211 }
1212
1213 if (new_win) /* set the new window */
1214 {
1215 struct thread *owner = get_window_thread( new_win );
1216 if (owner)
1217 {
1218 msg->win = new_win;
1219 if (owner->queue->input != input)
1220 {
1221 list_remove( &msg->entry );
1222 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1223 {
1224 free_message( msg );
1225 release_object( owner );
1226 return;
1227 }
1228 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1229 }
1230 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1231 remove = 0;
1232 release_object( owner );
1233 }
1234 }
1235 if (remove)
1236 {
1237 update_input_key_state( input, msg );
1238 list_remove( &msg->entry );
1239 free_message( msg );
1240 }
1241 }
1242
1243 /* find the window that should receive a given hardware message */
1244 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1245 struct hardware_msg_data *data, unsigned int *msg_code )
1246 {
1247 user_handle_t win = 0;
1248
1249 *msg_code = msg->msg;
1250 if (is_keyboard_msg( msg ))
1251 {
1252 if (input && !(win = input->focus))
1253 {
1254 win = input->active;
1255 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1256 }
1257 }
1258 else /* mouse message */
1259 {
1260 if (!input || !(win = input->capture))
1261 {
1262 if (!(win = msg->win) || !is_window_visible( win ))
1263 {
1264 if (input) win = window_from_point( input->desktop, data->x, data->y );
1265 }
1266 }
1267 }
1268 return win;
1269 }
1270
1271 /* queue a hardware message into a given thread input */
1272 static void queue_hardware_message( struct msg_queue *queue, struct message *msg,
1273 struct hardware_msg_data *data )
1274 {
1275 user_handle_t win;
1276 struct thread *thread;
1277 struct thread_input *input = queue ? queue->input : foreground_input;
1278 unsigned int msg_code;
1279
1280 last_input_time = get_tick_count();
1281 win = find_hardware_message_window( input, msg, data, &msg_code );
1282 if (!win || !(thread = get_window_thread(win)))
1283 {
1284 if (input) update_input_key_state( input, msg );
1285 free( msg );
1286 return;
1287 }
1288 input = thread->queue->input;
1289
1290 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1291 else
1292 {
1293 msg->unique_id = 0; /* will be set once we return it to the app */
1294 list_add_tail( &input->msg_list, &msg->entry );
1295 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1296 }
1297 release_object( thread );
1298 }
1299
1300 /* check message filter for a hardware message */
1301 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1302 user_handle_t filter_win, unsigned int first, unsigned int last )
1303 {
1304 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1305 {
1306 /* we can only test the window for a keyboard message since the
1307 * dest window for a mouse message depends on hittest */
1308 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1309 return 0;
1310 /* the message code is final for a keyboard message, we can simply check it */
1311 return check_msg_filter( msg_code, first, last );
1312 }
1313 else /* mouse message */
1314 {
1315 /* we need to check all possible values that the message can have in the end */
1316
1317 if (check_msg_filter( msg_code, first, last )) return 1;
1318 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1319
1320 /* all other messages can become non-client messages */
1321 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1322
1323 /* clicks can become double-clicks or non-client double-clicks */
1324 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1325 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1326 {
1327 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1328 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1329 }
1330 return 0;
1331 }
1332 }
1333
1334
1335 /* find a hardware message for the given queue */
1336 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1337 unsigned int first, unsigned int last, struct get_message_reply *reply )
1338 {
1339 struct thread_input *input = thread->queue->input;
1340 struct thread *win_thread;
1341 struct list *ptr;
1342 user_handle_t win;
1343 int clear_bits, got_one = 0;
1344 unsigned int msg_code;
1345
1346 ptr = list_head( &input->msg_list );
1347 if (hw_id)
1348 {
1349 while (ptr)
1350 {
1351 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1352 if (msg->unique_id == hw_id) break;
1353 ptr = list_next( &input->msg_list, ptr );
1354 }
1355 if (!ptr) ptr = list_head( &input->msg_list );
1356 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1357 }
1358
1359 if (ptr == list_head( &input->msg_list ))
1360 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1361 else
1362 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1363
1364 while (ptr)
1365 {
1366 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1367 struct hardware_msg_data *data = msg->data;
1368
1369 ptr = list_next( &input->msg_list, ptr );
1370 win = find_hardware_message_window( input, msg, data, &msg_code );
1371 if (!win || !(win_thread = get_window_thread( win )))
1372 {
1373 /* no window at all, remove it */
1374 update_input_key_state( input, msg );
1375 list_remove( &msg->entry );
1376 free_message( msg );
1377 continue;
1378 }
1379 if (win_thread != thread)
1380 {
1381 if (win_thread->queue->input == input)
1382 {
1383 /* wake the other thread */
1384 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1385 got_one = 1;
1386 }
1387 else
1388 {
1389 /* for another thread input, drop it */
1390 update_input_key_state( input, msg );
1391 list_remove( &msg->entry );
1392 free_message( msg );
1393 }
1394 release_object( win_thread );
1395 continue;
1396 }
1397 release_object( win_thread );
1398
1399 /* if we already got a message for another thread, or if it doesn't
1400 * match the filter we skip it */
1401 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1402 {
1403 clear_bits &= ~get_hardware_msg_bit( msg );
1404 continue;
1405 }
1406 /* now we can return it */
1407 if (!msg->unique_id) msg->unique_id = get_unique_id();
1408 reply->type = MSG_HARDWARE;
1409 reply->win = win;
1410 reply->msg = msg_code;
1411 reply->wparam = msg->wparam;
1412 reply->lparam = msg->lparam;
1413 reply->time = msg->time;
1414
1415 data->hw_id = msg->unique_id;
1416 set_reply_data( msg->data, msg->data_size );
1417 return 1;
1418 }
1419 /* nothing found, clear the hardware queue bits */
1420 clear_queue_bits( thread->queue, clear_bits );
1421 return 0;
1422 }
1423
1424 /* increment (or decrement if 'incr' is negative) the queue paint count */
1425 void inc_queue_paint_count( struct thread *thread, int incr )
1426 {
1427 struct msg_queue *queue = thread->queue;
1428
1429 assert( queue );
1430
1431 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1432
1433 if (queue->paint_count)
1434 set_queue_bits( queue, QS_PAINT );
1435 else
1436 clear_queue_bits( queue, QS_PAINT );
1437 }
1438
1439
1440 /* remove all messages and timers belonging to a certain window */
1441 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1442 {
1443 struct msg_queue *queue = thread->queue;
1444 struct list *ptr;
1445 int i;
1446
1447 if (!queue) return;
1448
1449 /* remove timers */
1450
1451 ptr = list_head( &queue->pending_timers );
1452 while (ptr)
1453 {
1454 struct list *next = list_next( &queue->pending_timers, ptr );
1455 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1456 if (timer->win == win) free_timer( queue, timer );
1457 ptr = next;
1458 }
1459 ptr = list_head( &queue->expired_timers );
1460 while (ptr)
1461 {
1462 struct list *next = list_next( &queue->expired_timers, ptr );
1463 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1464 if (timer->win == win) free_timer( queue, timer );
1465 ptr = next;
1466 }
1467
1468 /* remove messages */
1469 for (i = 0; i < NB_MSG_KINDS; i++)
1470 {
1471 struct list *ptr, *next;
1472
1473 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1474 {
1475 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1476 if (msg->win == win) remove_queue_message( queue, msg, i );
1477 }
1478 }
1479
1480 thread_input_cleanup_window( queue, win );
1481 }
1482
1483 /* post a message to a window; used by socket handling */
1484 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1485 {
1486 struct message *msg;
1487 struct thread *thread = get_window_thread( win );
1488
1489 if (!thread) return;
1490
1491 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1492 {
1493 msg->type = MSG_POSTED;
1494 msg->win = get_user_full_handle( win );
1495 msg->msg = message;
1496 msg->wparam = wparam;
1497 msg->lparam = lparam;
1498 msg->time = get_tick_count();
1499 msg->result = NULL;
1500 msg->data = NULL;
1501 msg->data_size = 0;
1502
1503 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1504 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1505 }
1506 release_object( thread );
1507 }
1508
1509 /* post a win event */
1510 void post_win_event( struct thread *thread, unsigned int event,
1511 user_handle_t win, unsigned int object_id,
1512 unsigned int child_id, client_ptr_t hook_proc,
1513 const WCHAR *module, data_size_t module_size,
1514 user_handle_t hook)
1515 {
1516 struct message *msg;
1517
1518 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1519 {
1520 struct winevent_msg_data *data;
1521
1522 msg->type = MSG_WINEVENT;
1523 msg->win = get_user_full_handle( win );
1524 msg->msg = event;
1525 msg->wparam = object_id;
1526 msg->lparam = child_id;
1527 msg->time = get_tick_count();
1528 msg->result = NULL;
1529
1530 if ((data = malloc( sizeof(*data) + module_size )))
1531 {
1532 data->hook = hook;
1533 data->tid = get_thread_id( current );
1534 data->hook_proc = hook_proc;
1535 memcpy( data + 1, module, module_size );
1536
1537 msg->data = data;
1538 msg->data_size = sizeof(*data) + module_size;
1539
1540 if (debug_level > 1)
1541 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1542 get_thread_id(thread), event, win, object_id, child_id );
1543 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1544 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1545 }
1546 else
1547 free( msg );
1548 }
1549 }
1550
1551
1552 /* check if the thread owning the window is hung */
1553 DECL_HANDLER(is_window_hung)
1554 {
1555 struct thread *thread;
1556
1557 thread = get_window_thread( req->win );
1558 if (thread)
1559 {
1560 reply->is_hung = is_queue_hung( thread->queue );
1561 release_object( thread );
1562 }
1563 else reply->is_hung = 0;
1564 }
1565
1566
1567 /* get the message queue of the current thread */
1568 DECL_HANDLER(get_msg_queue)
1569 {
1570 struct msg_queue *queue = get_current_queue();
1571
1572 reply->handle = 0;
1573 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1574 }
1575
1576
1577 /* set the file descriptor associated to the current thread queue */
1578 DECL_HANDLER(set_queue_fd)
1579 {
1580 struct msg_queue *queue = get_current_queue();
1581 struct file *file;
1582 int unix_fd;
1583
1584 if (queue->fd) /* fd can only be set once */
1585 {
1586 set_error( STATUS_ACCESS_DENIED );
1587 return;
1588 }
1589 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1590
1591 if ((unix_fd = get_file_unix_fd( file )) != -1)
1592 {
1593 if ((unix_fd = dup( unix_fd )) != -1)
1594 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1595 else
1596 file_set_error();
1597 }
1598 release_object( file );
1599 }
1600
1601
1602 /* set the current message queue wakeup mask */
1603 DECL_HANDLER(set_queue_mask)
1604 {
1605 struct msg_queue *queue = get_current_queue();
1606
1607 if (queue)
1608 {
1609 queue->wake_mask = req->wake_mask;
1610 queue->changed_mask = req->changed_mask;
1611 reply->wake_bits = queue->wake_bits;
1612 reply->changed_bits = queue->changed_bits;
1613 if (is_signaled( queue ))
1614 {
1615 /* if skip wait is set, do what would have been done in the subsequent wait */
1616 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1617 else wake_up( &queue->obj, 0 );
1618 }
1619 }
1620 }
1621
1622
1623 /* get the current message queue status */
1624 DECL_HANDLER(get_queue_status)
1625 {
1626 struct msg_queue *queue = current->queue;
1627 if (queue)
1628 {
1629 reply->wake_bits = queue->wake_bits;
1630 reply->changed_bits = queue->changed_bits;
1631 if (req->clear) queue->changed_bits = 0;
1632 }
1633 else reply->wake_bits = reply->changed_bits = 0;
1634 }
1635
1636
1637 /* send a message to a thread queue */
1638 DECL_HANDLER(send_message)
1639 {
1640 struct message *msg;
1641 struct msg_queue *send_queue = get_current_queue();
1642 struct msg_queue *recv_queue = NULL;
1643 struct thread *thread = NULL;
1644
1645 if (!(thread = get_thread_from_id( req->id ))) return;
1646
1647 if (!(recv_queue = thread->queue))
1648 {
1649 set_error( STATUS_INVALID_PARAMETER );
1650 release_object( thread );
1651 return;
1652 }
1653 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1654 {
1655 set_error( STATUS_TIMEOUT );
1656 release_object( thread );
1657 return;
1658 }
1659
1660 if ((msg = mem_alloc( sizeof(*msg) )))
1661 {
1662 msg->type = req->type;
1663 msg->win = get_user_full_handle( req->win );
1664 msg->msg = req->msg;
1665 msg->wparam = req->wparam;
1666 msg->lparam = req->lparam;
1667 msg->time = get_tick_count();
1668 msg->result = NULL;
1669 msg->data = NULL;
1670 msg->data_size = get_req_data_size();
1671
1672 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1673 {
1674 free( msg );
1675 release_object( thread );
1676 return;
1677 }
1678
1679 switch(msg->type)
1680 {
1681 case MSG_OTHER_PROCESS:
1682 case MSG_ASCII:
1683 case MSG_UNICODE:
1684 case MSG_CALLBACK:
1685 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1686 {
1687 free_message( msg );
1688 break;
1689 }
1690 /* fall through */
1691 case MSG_NOTIFY:
1692 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1693 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1694 break;
1695 case MSG_POSTED:
1696 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1697 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1698 break;
1699 case MSG_HARDWARE: /* should use send_hardware_message instead */
1700 case MSG_CALLBACK_RESULT: /* cannot send this one */
1701 default:
1702 set_error( STATUS_INVALID_PARAMETER );
1703 free( msg );
1704 break;
1705 }
1706 }
1707 release_object( thread );
1708 }
1709
1710 /* send a hardware message to a thread queue */
1711 DECL_HANDLER(send_hardware_message)
1712 {
1713 struct message *msg;
1714 struct msg_queue *recv_queue = NULL;
1715 struct thread *thread = NULL;
1716 struct hardware_msg_data *data;
1717
1718 if (req->id)
1719 {
1720 if (!(thread = get_thread_from_id( req->id ))) return;
1721 }
1722
1723 if (thread && !(recv_queue = thread->queue))
1724 {
1725 set_error( STATUS_INVALID_PARAMETER );
1726 release_object( thread );
1727 return;
1728 }
1729
1730 if (!(data = mem_alloc( sizeof(*data) )))
1731 {
1732 if (thread) release_object( thread );
1733 return;
1734 }
1735 memset( data, 0, sizeof(*data) );
1736 data->x = req->x;
1737 data->y = req->y;
1738 data->info = req->info;
1739
1740 if ((msg = mem_alloc( sizeof(*msg) )))
1741 {
1742 msg->type = MSG_HARDWARE;
1743 msg->win = get_user_full_handle( req->win );
1744 msg->msg = req->msg;
1745 msg->wparam = req->wparam;
1746 msg->lparam = req->lparam;
1747 msg->time = req->time;
1748 msg->result = NULL;
1749 msg->data = data;
1750 msg->data_size = sizeof(*data);
1751 queue_hardware_message( recv_queue, msg, data );
1752 }
1753 else free( data );
1754
1755 if (thread) release_object( thread );
1756 }
1757
1758 /* post a quit message to the current queue */
1759 DECL_HANDLER(post_quit_message)
1760 {
1761 struct msg_queue *queue = get_current_queue();
1762
1763 if (!queue)
1764 return;
1765
1766 queue->quit_message = 1;
1767 queue->exit_code = req->exit_code;
1768 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1769 }
1770
1771 /* get a message from the current queue */
1772 DECL_HANDLER(get_message)
1773 {
1774 struct timer *timer;
1775 struct list *ptr;
1776 struct msg_queue *queue = get_current_queue();
1777 user_handle_t get_win = get_user_full_handle( req->get_win );
1778 unsigned int filter = req->flags >> 16;
1779
1780 reply->active_hooks = get_active_hooks();
1781
1782 if (!queue) return;
1783 queue->last_get_msg = current_time;
1784 if (!filter) filter = QS_ALLINPUT;
1785
1786 /* first check for sent messages */
1787 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1788 {
1789 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1790 receive_message( queue, msg, reply );
1791 return;
1792 }
1793
1794 /* clear changed bits so we can wait on them if we don't find a message */
1795 if (filter & QS_POSTMESSAGE)
1796 {
1797 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1798 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1799 }
1800 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1801 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1802
1803 /* then check for posted messages */
1804 if ((filter & QS_POSTMESSAGE) &&
1805 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1806 return;
1807
1808 /* only check for quit messages if not posted messages pending.
1809 * note: the quit message isn't filtered */
1810 if (get_quit_message( queue, req->flags, reply ))
1811 return;
1812
1813 /* then check for any raw hardware message */
1814 if ((filter & QS_INPUT) &&
1815 filter_contains_hw_range( req->get_first, req->get_last ) &&
1816 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1817 return;
1818
1819 /* now check for WM_PAINT */
1820 if ((filter & QS_PAINT) &&
1821 queue->paint_count &&
1822 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1823 (reply->win = find_window_to_repaint( get_win, current )))
1824 {
1825 reply->type = MSG_POSTED;
1826 reply->msg = WM_PAINT;
1827 reply->wparam = 0;
1828 reply->lparam = 0;
1829 reply->time = get_tick_count();
1830 return;
1831 }
1832
1833 /* now check for timer */
1834 if ((filter & QS_TIMER) &&
1835 (timer = find_expired_timer( queue, get_win, req->get_first,
1836 req->get_last, (req->flags & PM_REMOVE) )))
1837 {
1838 reply->type = MSG_POSTED;
1839 reply->win = timer->win;
1840 reply->msg = timer->msg;
1841 reply->wparam = timer->id;
1842 reply->lparam = timer->lparam;
1843 reply->time = get_tick_count();
1844 return;
1845 }
1846
1847 queue->wake_mask = req->wake_mask;
1848 queue->changed_mask = req->changed_mask;
1849 set_error( STATUS_PENDING ); /* FIXME */
1850 }
1851
1852
1853 /* reply to a sent message */
1854 DECL_HANDLER(reply_message)
1855 {
1856 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1857 else if (current->queue->recv_result)
1858 reply_message( current->queue, req->result, 0, req->remove,
1859 get_req_data(), get_req_data_size() );
1860 }
1861
1862
1863 /* accept the current hardware message */
1864 DECL_HANDLER(accept_hardware_message)
1865 {
1866 if (current->queue)
1867 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1868 else
1869 set_error( STATUS_ACCESS_DENIED );
1870 }
1871
1872
1873 /* retrieve the reply for the last message sent */
1874 DECL_HANDLER(get_message_reply)
1875 {
1876 struct message_result *result;
1877 struct list *entry;
1878 struct msg_queue *queue = current->queue;
1879
1880 if (queue)
1881 {
1882 set_error( STATUS_PENDING );
1883 reply->result = 0;
1884
1885 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1886
1887 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1888 if (result->replied || req->cancel)
1889 {
1890 if (result->replied)
1891 {
1892 reply->result = result->result;
1893 set_error( result->error );
1894 if (result->data)
1895 {
1896 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1897 set_reply_data_ptr( result->data, data_len );
1898 result->data = NULL;
1899 result->data_size = 0;
1900 }
1901 }
1902 remove_result_from_sender( result );
1903
1904 entry = list_head( &queue->send_result );
1905 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1906 else
1907 {
1908 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1909 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1910 }
1911 }
1912 }
1913 else set_error( STATUS_ACCESS_DENIED );
1914 }
1915
1916
1917 /* set a window timer */
1918 DECL_HANDLER(set_win_timer)
1919 {
1920 struct timer *timer;
1921 struct msg_queue *queue;
1922 struct thread *thread = NULL;
1923 user_handle_t win = 0;
1924 lparam_t id = req->id;
1925
1926 if (req->win)
1927 {
1928 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1929 {
1930 set_error( STATUS_INVALID_HANDLE );
1931 return;
1932 }
1933 if (thread->process != current->process)
1934 {
1935 release_object( thread );
1936 set_error( STATUS_ACCESS_DENIED );
1937 return;
1938 }
1939 queue = thread->queue;
1940 /* remove it if it existed already */
1941 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1942 }
1943 else
1944 {
1945 queue = get_current_queue();
1946 /* look for a timer with this id */
1947 if (id && (timer = find_timer( queue, 0, req->msg, id )))
1948 {
1949 /* free and reuse id */
1950 free_timer( queue, timer );
1951 }
1952 else
1953 {
1954 /* find a free id for it */
1955 do
1956 {
1957 id = queue->next_timer_id;
1958 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
1959 }
1960 while (find_timer( queue, 0, req->msg, id ));
1961 }
1962 }
1963
1964 if ((timer = set_timer( queue, req->rate )))
1965 {
1966 timer->win = win;
1967 timer->msg = req->msg;
1968 timer->id = id;
1969 timer->lparam = req->lparam;
1970 reply->id = id;
1971 }
1972 if (thread) release_object( thread );
1973 }
1974
1975 /* kill a window timer */
1976 DECL_HANDLER(kill_win_timer)
1977 {
1978 struct timer *timer;
1979 struct thread *thread;
1980 user_handle_t win = 0;
1981
1982 if (req->win)
1983 {
1984 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1985 {
1986 set_error( STATUS_INVALID_HANDLE );
1987 return;
1988 }
1989 if (thread->process != current->process)
1990 {
1991 release_object( thread );
1992 set_error( STATUS_ACCESS_DENIED );
1993 return;
1994 }
1995 }
1996 else thread = (struct thread *)grab_object( current );
1997
1998 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1999 free_timer( thread->queue, timer );
2000 else
2001 set_error( STATUS_INVALID_PARAMETER );
2002
2003 release_object( thread );
2004 }
2005
2006
2007 /* attach (or detach) thread inputs */
2008 DECL_HANDLER(attach_thread_input)
2009 {
2010 struct thread *thread_from = get_thread_from_id( req->tid_from );
2011 struct thread *thread_to = get_thread_from_id( req->tid_to );
2012
2013 if (!thread_from || !thread_to)
2014 {
2015 if (thread_from) release_object( thread_from );
2016 if (thread_to) release_object( thread_to );
2017 return;
2018 }
2019 if (thread_from != thread_to)
2020 {
2021 if (req->attach) attach_thread_input( thread_from, thread_to );
2022 else
2023 {
2024 if (thread_from->queue && thread_to->queue &&
2025 thread_from->queue->input == thread_to->queue->input)
2026 detach_thread_input( thread_from );
2027 else
2028 set_error( STATUS_ACCESS_DENIED );
2029 }
2030 }
2031 else set_error( STATUS_ACCESS_DENIED );
2032 release_object( thread_from );
2033 release_object( thread_to );
2034 }
2035
2036
2037 /* get thread input data */
2038 DECL_HANDLER(get_thread_input)
2039 {
2040 struct thread *thread = NULL;
2041 struct thread_input *input;
2042
2043 if (req->tid)
2044 {
2045 if (!(thread = get_thread_from_id( req->tid ))) return;
2046 input = thread->queue ? thread->queue->input : NULL;
2047 }
2048 else input = foreground_input; /* get the foreground thread info */
2049
2050 if (input)
2051 {
2052 reply->focus = input->focus;
2053 reply->capture = input->capture;
2054 reply->active = input->active;
2055 reply->menu_owner = input->menu_owner;
2056 reply->move_size = input->move_size;
2057 reply->caret = input->caret;
2058 reply->rect = input->caret_rect;
2059 }
2060 else
2061 {
2062 reply->focus = 0;
2063 reply->capture = 0;
2064 reply->active = 0;
2065 reply->menu_owner = 0;
2066 reply->move_size = 0;
2067 reply->caret = 0;
2068 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2069 }
2070 /* foreground window is active window of foreground thread */
2071 reply->foreground = foreground_input ? foreground_input->active : 0;
2072 if (thread) release_object( thread );
2073 }
2074
2075
2076 /* retrieve queue keyboard state for a given thread */
2077 DECL_HANDLER(get_key_state)
2078 {
2079 struct thread *thread;
2080 struct thread_input *input;
2081
2082 if (!(thread = get_thread_from_id( req->tid ))) return;
2083 input = thread->queue ? thread->queue->input : NULL;
2084 if (input)
2085 {
2086 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2087 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2088 }
2089 release_object( thread );
2090 }
2091
2092
2093 /* set queue keyboard state for a given thread */
2094 DECL_HANDLER(set_key_state)
2095 {
2096 struct thread *thread = NULL;
2097 struct thread_input *input;
2098
2099 if (!(thread = get_thread_from_id( req->tid ))) return;
2100 input = thread->queue ? thread->queue->input : NULL;
2101 if (input)
2102 {
2103 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2104 if (size) memcpy( input->keystate, get_req_data(), size );
2105 }
2106 release_object( thread );
2107 }
2108
2109
2110 /* set the system foreground window */
2111 DECL_HANDLER(set_foreground_window)
2112 {
2113 struct thread *thread;
2114 struct msg_queue *queue = get_current_queue();
2115
2116 reply->previous = foreground_input ? foreground_input->active : 0;
2117 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2118 reply->send_msg_new = FALSE;
2119
2120 if (is_top_level_window( req->handle ) &&
2121 ((thread = get_window_thread( req->handle ))))
2122 {
2123 foreground_input = thread->queue->input;
2124 reply->send_msg_new = (foreground_input != queue->input);
2125 release_object( thread );
2126 }
2127 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2128 }
2129
2130
2131 /* set the current thread focus window */
2132 DECL_HANDLER(set_focus_window)
2133 {
2134 struct msg_queue *queue = get_current_queue();
2135
2136 reply->previous = 0;
2137 if (queue && check_queue_input_window( queue, req->handle ))
2138 {
2139 reply->previous = queue->input->focus;
2140 queue->input->focus = get_user_full_handle( req->handle );
2141 }
2142 }
2143
2144
2145 /* set the current thread active window */
2146 DECL_HANDLER(set_active_window)
2147 {
2148 struct msg_queue *queue = get_current_queue();
2149
2150 reply->previous = 0;
2151 if (queue && check_queue_input_window( queue, req->handle ))
2152 {
2153 if (!req->handle || make_window_active( req->handle ))
2154 {
2155 reply->previous = queue->input->active;
2156 queue->input->active = get_user_full_handle( req->handle );
2157 }
2158 else set_error( STATUS_INVALID_HANDLE );
2159 }
2160 }
2161
2162
2163 /* set the current thread capture window */
2164 DECL_HANDLER(set_capture_window)
2165 {
2166 struct msg_queue *queue = get_current_queue();
2167
2168 reply->previous = reply->full_handle = 0;
2169 if (queue && check_queue_input_window( queue, req->handle ))
2170 {
2171 struct thread_input *input = queue->input;
2172
2173 reply->previous = input->capture;
2174 input->capture = get_user_full_handle( req->handle );
2175 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2176 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2177 reply->full_handle = input->capture;
2178 }
2179 }
2180
2181
2182 /* Set the current thread caret window */
2183 DECL_HANDLER(set_caret_window)
2184 {
2185 struct msg_queue *queue = get_current_queue();
2186
2187 reply->previous = 0;
2188 if (queue && check_queue_input_window( queue, req->handle ))
2189 {
2190 struct thread_input *input = queue->input;
2191
2192 reply->previous = input->caret;
2193 reply->old_rect = input->caret_rect;
2194 reply->old_hide = input->caret_hide;
2195 reply->old_state = input->caret_state;
2196
2197 set_caret_window( input, get_user_full_handle(req->handle) );
2198 input->caret_rect.right = input->caret_rect.left + req->width;
2199 input->caret_rect.bottom = input->caret_rect.top + req->height;
2200 }
2201 }
2202
2203
2204 /* Set the current thread caret information */
2205 DECL_HANDLER(set_caret_info)
2206 {
2207 struct msg_queue *queue = get_current_queue();
2208 struct thread_input *input;
2209
2210 if (!queue) return;
2211 input = queue->input;
2212 reply->full_handle = input->caret;
2213 reply->old_rect = input->caret_rect;
2214 reply->old_hide = input->caret_hide;
2215 reply->old_state = input->caret_state;
2216
2217 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2218 {
2219 set_error( STATUS_ACCESS_DENIED );
2220 return;
2221 }
2222 if (req->flags & SET_CARET_POS)
2223 {
2224 input->caret_rect.right += req->x - input->caret_rect.left;
2225 input->caret_rect.bottom += req->y - input->caret_rect.top;
2226 input->caret_rect.left = req->x;
2227 input->caret_rect.top = req->y;
2228 }
2229 if (req->flags & SET_CARET_HIDE)
2230 {
2231 input->caret_hide += req->hide;
2232 if (input->caret_hide < 0) input->caret_hide = 0;
2233 }
2234 if (req->flags & SET_CARET_STATE)
2235 {
2236 if (req->state == -1) input->caret_state = !input->caret_state;
2237 else input->caret_state = !!req->state;
2238 }
2239 }
2240
2241
2242 /* get the time of the last input event */
2243 DECL_HANDLER(get_last_input_time)
2244 {
2245 reply->time = last_input_time;
2246 }
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