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gdiplus: Select the font into the appropriate hdc in GdipMeasureString.
[wine/multimedia.git] / server / queue.c
blob7d25afa6945cd672988483554584964c4f7dac47
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 *hardware_msg; /* hardware message if low-level hook result */
62 struct desktop *desktop; /* desktop for hardware message */
63 struct message *callback_msg; /* message to queue for callback */
64 void *data; /* message reply data */
65 unsigned int data_size; /* size of message reply data */
66 struct timeout_user *timeout; /* result timeout */
67 };
68
69 struct message
70 {
71 struct list entry; /* entry in message list */
72 enum message_type type; /* message type */
73 user_handle_t win; /* window handle */
74 unsigned int msg; /* message code */
75 lparam_t wparam; /* parameters */
76 lparam_t lparam; /* parameters */
77 unsigned int time; /* message time */
78 void *data; /* message data for sent messages */
79 unsigned int data_size; /* size of message data */
80 unsigned int unique_id; /* unique id for nested hw message waits */
81 struct message_result *result; /* result in sender queue */
82 };
83
84 struct timer
85 {
86 struct list entry; /* entry in timer list */
87 timeout_t when; /* next expiration */
88 unsigned int rate; /* timer rate in ms */
89 user_handle_t win; /* window handle */
90 unsigned int msg; /* message to post */
91 lparam_t id; /* timer id */
92 lparam_t lparam; /* lparam for message */
93 };
94
95 struct thread_input
96 {
97 struct object obj; /* object header */
98 struct desktop *desktop; /* desktop that this thread input belongs to */
99 user_handle_t focus; /* focus window */
100 user_handle_t capture; /* capture window */
101 user_handle_t active; /* active window */
102 user_handle_t menu_owner; /* current menu owner window */
103 user_handle_t move_size; /* current moving/resizing window */
104 user_handle_t caret; /* caret window */
105 rectangle_t caret_rect; /* caret rectangle */
106 int caret_hide; /* caret hide count */
107 int caret_state; /* caret on/off state */
108 user_handle_t cursor; /* current cursor */
109 int cursor_count; /* cursor show count */
110 struct list msg_list; /* list of hardware messages */
111 unsigned char keystate[256]; /* state of each key */
112 };
113
114 struct msg_queue
115 {
116 struct object obj; /* object header */
117 struct fd *fd; /* optional file descriptor to poll */
118 unsigned int wake_bits; /* wakeup bits */
119 unsigned int wake_mask; /* wakeup mask */
120 unsigned int changed_bits; /* changed wakeup bits */
121 unsigned int changed_mask; /* changed wakeup mask */
122 int paint_count; /* pending paint messages count */
123 int quit_message; /* is there a pending quit message? */
124 int exit_code; /* exit code of pending quit message */
125 int cursor_count; /* per-queue cursor show count */
126 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
127 struct list send_result; /* stack of sent messages waiting for result */
128 struct list callback_result; /* list of callback messages waiting for result */
129 struct message_result *recv_result; /* stack of received messages waiting for result */
130 struct list pending_timers; /* list of pending timers */
131 struct list expired_timers; /* list of expired timers */
132 lparam_t next_timer_id; /* id for the next timer with a 0 window */
133 struct timeout_user *timeout; /* timeout for next timer to expire */
134 struct thread_input *input; /* thread input descriptor */
135 struct hook_table *hooks; /* hook table */
136 timeout_t last_get_msg; /* time of last get message call */
137 };
138
139 static void msg_queue_dump( struct object *obj, int verbose );
140 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
141 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
142 static int msg_queue_signaled( struct object *obj, struct thread *thread );
143 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
144 static void msg_queue_destroy( struct object *obj );
145 static void msg_queue_poll_event( struct fd *fd, int event );
146 static void thread_input_dump( struct object *obj, int verbose );
147 static void thread_input_destroy( struct object *obj );
148 static void timer_callback( void *private );
149
150 static const struct object_ops msg_queue_ops =
151 {
152 sizeof(struct msg_queue), /* size */
153 msg_queue_dump, /* dump */
154 no_get_type, /* get_type */
155 msg_queue_add_queue, /* add_queue */
156 msg_queue_remove_queue, /* remove_queue */
157 msg_queue_signaled, /* signaled */
158 msg_queue_satisfied, /* satisfied */
159 no_signal, /* signal */
160 no_get_fd, /* get_fd */
161 no_map_access, /* map_access */
162 default_get_sd, /* get_sd */
163 default_set_sd, /* set_sd */
164 no_lookup_name, /* lookup_name */
165 no_open_file, /* open_file */
166 no_close_handle, /* close_handle */
167 msg_queue_destroy /* destroy */
168 };
169
170 static const struct fd_ops msg_queue_fd_ops =
171 {
172 NULL, /* get_poll_events */
173 msg_queue_poll_event, /* poll_event */
174 NULL, /* flush */
175 NULL, /* get_fd_type */
176 NULL, /* ioctl */
177 NULL, /* queue_async */
178 NULL, /* reselect_async */
179 NULL /* cancel async */
180 };
181
182
183 static const struct object_ops thread_input_ops =
184 {
185 sizeof(struct thread_input), /* size */
186 thread_input_dump, /* dump */
187 no_get_type, /* get_type */
188 no_add_queue, /* add_queue */
189 NULL, /* remove_queue */
190 NULL, /* signaled */
191 NULL, /* satisfied */
192 no_signal, /* signal */
193 no_get_fd, /* get_fd */
194 no_map_access, /* map_access */
195 default_get_sd, /* get_sd */
196 default_set_sd, /* set_sd */
197 no_lookup_name, /* lookup_name */
198 no_open_file, /* open_file */
199 no_close_handle, /* close_handle */
200 thread_input_destroy /* destroy */
201 };
202
203 /* pointer to input structure of foreground thread */
204 static unsigned int last_input_time;
205
206 static void queue_hardware_message( struct desktop *desktop, struct message *msg );
207 static void free_message( struct message *msg );
208
209 /* set the caret window in a given thread input */
210 static void set_caret_window( struct thread_input *input, user_handle_t win )
211 {
212 if (!win || win != input->caret)
213 {
214 input->caret_rect.left = 0;
215 input->caret_rect.top = 0;
216 input->caret_rect.right = 0;
217 input->caret_rect.bottom = 0;
218 }
219 input->caret = win;
220 input->caret_hide = 1;
221 input->caret_state = 0;
222 }
223
224 /* create a thread input object */
225 static struct thread_input *create_thread_input( struct thread *thread )
226 {
227 struct thread_input *input;
228
229 if ((input = alloc_object( &thread_input_ops )))
230 {
231 input->focus = 0;
232 input->capture = 0;
233 input->active = 0;
234 input->menu_owner = 0;
235 input->move_size = 0;
236 input->cursor = 0;
237 input->cursor_count = 0;
238 list_init( &input->msg_list );
239 set_caret_window( input, 0 );
240 memset( input->keystate, 0, sizeof(input->keystate) );
241
242 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
243 {
244 release_object( input );
245 return NULL;
246 }
247 }
248 return input;
249 }
250
251 /* create a message queue object */
252 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
253 {
254 struct thread_input *new_input = NULL;
255 struct msg_queue *queue;
256 int i;
257
258 if (!input)
259 {
260 if (!(new_input = create_thread_input( thread ))) return NULL;
261 input = new_input;
262 }
263
264 if ((queue = alloc_object( &msg_queue_ops )))
265 {
266 queue->fd = NULL;
267 queue->wake_bits = 0;
268 queue->wake_mask = 0;
269 queue->changed_bits = 0;
270 queue->changed_mask = 0;
271 queue->paint_count = 0;
272 queue->quit_message = 0;
273 queue->cursor_count = 0;
274 queue->recv_result = NULL;
275 queue->next_timer_id = 0x7fff;
276 queue->timeout = NULL;
277 queue->input = (struct thread_input *)grab_object( input );
278 queue->hooks = NULL;
279 queue->last_get_msg = current_time;
280 list_init( &queue->send_result );
281 list_init( &queue->callback_result );
282 list_init( &queue->pending_timers );
283 list_init( &queue->expired_timers );
284 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
285
286 thread->queue = queue;
287 }
288 if (new_input) release_object( new_input );
289 return queue;
290 }
291
292 /* free the message queue of a thread at thread exit */
293 void free_msg_queue( struct thread *thread )
294 {
295 remove_thread_hooks( thread );
296 if (!thread->queue) return;
297 release_object( thread->queue );
298 thread->queue = NULL;
299 }
300
301 /* change the thread input data of a given thread */
302 static int assign_thread_input( struct thread *thread, struct thread_input *new_input )
303 {
304 struct msg_queue *queue = thread->queue;
305
306 if (!queue)
307 {
308 thread->queue = create_msg_queue( thread, new_input );
309 return thread->queue != NULL;
310 }
311 if (queue->input)
312 {
313 queue->input->cursor_count -= queue->cursor_count;
314 release_object( queue->input );
315 }
316 queue->input = (struct thread_input *)grab_object( new_input );
317 new_input->cursor_count += queue->cursor_count;
318 return 1;
319 }
320
321 /* get the hook table for a given thread */
322 struct hook_table *get_queue_hooks( struct thread *thread )
323 {
324 if (!thread->queue) return NULL;
325 return thread->queue->hooks;
326 }
327
328 /* set the hook table for a given thread, allocating the queue if needed */
329 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
330 {
331 struct msg_queue *queue = thread->queue;
332 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
333 if (queue->hooks) release_object( queue->hooks );
334 queue->hooks = hooks;
335 }
336
337 /* check the queue status */
338 static inline int is_signaled( struct msg_queue *queue )
339 {
340 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
341 }
342
343 /* set some queue bits */
344 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
345 {
346 queue->wake_bits |= bits;
347 queue->changed_bits |= bits;
348 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
349 }
350
351 /* clear some queue bits */
352 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
353 {
354 queue->wake_bits &= ~bits;
355 queue->changed_bits &= ~bits;
356 }
357
358 /* check whether msg is a keyboard message */
359 static inline int is_keyboard_msg( struct message *msg )
360 {
361 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
362 }
363
364 /* check if message is matched by the filter */
365 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
366 {
367 return (msg >= first && msg <= last);
368 }
369
370 /* check whether a message filter contains at least one potential hardware message */
371 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
372 {
373 /* hardware message ranges are (in numerical order):
374 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
375 * WM_KEYFIRST .. WM_KEYLAST
376 * WM_MOUSEFIRST .. WM_MOUSELAST
377 */
378 if (last < WM_NCMOUSEFIRST) return 0;
379 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
380 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
381 if (first > WM_MOUSELAST) return 0;
382 return 1;
383 }
384
385 /* get the QS_* bit corresponding to a given hardware message */
386 static inline int get_hardware_msg_bit( struct message *msg )
387 {
388 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
389 if (is_keyboard_msg( msg )) return QS_KEY;
390 return QS_MOUSEBUTTON;
391 }
392
393 /* get the current thread queue, creating it if needed */
394 static inline struct msg_queue *get_current_queue(void)
395 {
396 struct msg_queue *queue = current->queue;
397 if (!queue) queue = create_msg_queue( current, NULL );
398 return queue;
399 }
400
401 /* get a (pseudo-)unique id to tag hardware messages */
402 static inline unsigned int get_unique_id(void)
403 {
404 static unsigned int id;
405 if (!++id) id = 1; /* avoid an id of 0 */
406 return id;
407 }
408
409 /* try to merge a message with the last in the list; return 1 if successful */
410 static int merge_message( struct thread_input *input, const struct message *msg )
411 {
412 struct message *prev;
413 struct list *ptr = list_tail( &input->msg_list );
414
415 if (!ptr) return 0;
416 prev = LIST_ENTRY( ptr, struct message, entry );
417 if (prev->result) return 0;
418 if (prev->win && msg->win && prev->win != msg->win) return 0;
419 if (prev->msg != msg->msg) return 0;
420 if (prev->type != msg->type) return 0;
421 /* now we can merge it */
422 prev->wparam = msg->wparam;
423 prev->lparam = msg->lparam;
424 prev->time = msg->time;
425 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
426 {
427 struct hardware_msg_data *prev_data = prev->data;
428 struct hardware_msg_data *msg_data = msg->data;
429 prev_data->x = msg_data->x;
430 prev_data->y = msg_data->y;
431 prev_data->info = msg_data->info;
432 }
433 return 1;
434 }
435
436 /* free a result structure */
437 static void free_result( struct message_result *result )
438 {
439 if (result->timeout) remove_timeout_user( result->timeout );
440 free( result->data );
441 if (result->callback_msg) free_message( result->callback_msg );
442 if (result->hardware_msg) free_message( result->hardware_msg );
443 if (result->desktop) release_object( result->desktop );
444 free( result );
445 }
446
447 /* remove the result from the sender list it is on */
448 static inline void remove_result_from_sender( struct message_result *result )
449 {
450 assert( result->sender );
451
452 list_remove( &result->sender_entry );
453 result->sender = NULL;
454 if (!result->receiver) free_result( result );
455 }
456
457 /* store the message result in the appropriate structure */
458 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
459 {
460 res->result = result;
461 res->error = error;
462 res->replied = 1;
463 if (res->timeout)
464 {
465 remove_timeout_user( res->timeout );
466 res->timeout = NULL;
467 }
468
469 if (res->hardware_msg)
470 {
471 if (!error && result) /* rejected by the hook */
472 free_message( res->hardware_msg );
473 else
474 queue_hardware_message( res->desktop, res->hardware_msg );
475
476 res->hardware_msg = NULL;
477 }
478
479 if (res->sender)
480 {
481 if (res->callback_msg)
482 {
483 /* queue the callback message in the sender queue */
484 struct callback_msg_data *data = res->callback_msg->data;
485 data->result = result;
486 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
487 set_queue_bits( res->sender, QS_SENDMESSAGE );
488 res->callback_msg = NULL;
489 remove_result_from_sender( res );
490 }
491 else
492 {
493 /* wake sender queue if waiting on this result */
494 if (list_head(&res->sender->send_result) == &res->sender_entry)
495 set_queue_bits( res->sender, QS_SMRESULT );
496 }
497 }
498 else if (!res->receiver) free_result( res );
499 }
500
501 /* free a message when deleting a queue or window */
502 static void free_message( struct message *msg )
503 {
504 struct message_result *result = msg->result;
505 if (result)
506 {
507 result->msg = NULL;
508 result->receiver = NULL;
509 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
510 }
511 free( msg->data );
512 free( msg );
513 }
514
515 /* remove (and free) a message from a message list */
516 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
517 enum message_kind kind )
518 {
519 list_remove( &msg->entry );
520 switch(kind)
521 {
522 case SEND_MESSAGE:
523 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
524 break;
525 case POST_MESSAGE:
526 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
527 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
528 break;
529 }
530 free_message( msg );
531 }
532
533 /* message timed out without getting a reply */
534 static void result_timeout( void *private )
535 {
536 struct message_result *result = private;
537
538 assert( !result->replied );
539
540 result->timeout = NULL;
541
542 if (result->msg) /* not received yet */
543 {
544 struct message *msg = result->msg;
545
546 result->msg = NULL;
547 msg->result = NULL;
548 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
549 result->receiver = NULL;
550 }
551 store_message_result( result, 0, STATUS_TIMEOUT );
552 }
553
554 /* allocate and fill a message result structure */
555 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
556 struct msg_queue *recv_queue,
557 struct message *msg, timeout_t timeout )
558 {
559 struct message_result *result = mem_alloc( sizeof(*result) );
560 if (result)
561 {
562 result->msg = msg;
563 result->sender = send_queue;
564 result->receiver = recv_queue;
565 result->replied = 0;
566 result->data = NULL;
567 result->data_size = 0;
568 result->timeout = NULL;
569 result->hardware_msg = NULL;
570 result->desktop = NULL;
571 result->callback_msg = NULL;
572
573 if (msg->type == MSG_CALLBACK)
574 {
575 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
576
577 if (!callback_msg)
578 {
579 free( result );
580 return NULL;
581 }
582 callback_msg->type = MSG_CALLBACK_RESULT;
583 callback_msg->win = msg->win;
584 callback_msg->msg = msg->msg;
585 callback_msg->wparam = 0;
586 callback_msg->lparam = 0;
587 callback_msg->time = get_tick_count();
588 callback_msg->result = NULL;
589 /* steal the data from the original message */
590 callback_msg->data = msg->data;
591 callback_msg->data_size = msg->data_size;
592 msg->data = NULL;
593 msg->data_size = 0;
594
595 result->callback_msg = callback_msg;
596 list_add_head( &send_queue->callback_result, &result->sender_entry );
597 }
598 else if (send_queue) list_add_head( &send_queue->send_result, &result->sender_entry );
599
600 if (timeout != TIMEOUT_INFINITE)
601 result->timeout = add_timeout_user( timeout, result_timeout, result );
602 }
603 return result;
604 }
605
606 /* receive a message, removing it from the sent queue */
607 static void receive_message( struct msg_queue *queue, struct message *msg,
608 struct get_message_reply *reply )
609 {
610 struct message_result *result = msg->result;
611
612 reply->total = msg->data_size;
613 if (msg->data_size > get_reply_max_size())
614 {
615 set_error( STATUS_BUFFER_OVERFLOW );
616 return;
617 }
618 reply->type = msg->type;
619 reply->win = msg->win;
620 reply->msg = msg->msg;
621 reply->wparam = msg->wparam;
622 reply->lparam = msg->lparam;
623 reply->time = msg->time;
624
625 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
626
627 list_remove( &msg->entry );
628 /* put the result on the receiver result stack */
629 if (result)
630 {
631 result->msg = NULL;
632 result->recv_next = queue->recv_result;
633 queue->recv_result = result;
634 }
635 free( msg );
636 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
637 }
638
639 /* set the result of the current received message */
640 static void reply_message( struct msg_queue *queue, lparam_t result,
641 unsigned int error, int remove, const void *data, data_size_t len )
642 {
643 struct message_result *res = queue->recv_result;
644
645 if (remove)
646 {
647 queue->recv_result = res->recv_next;
648 res->receiver = NULL;
649 if (!res->sender && !res->hardware_msg) /* no one waiting for it */
650 {
651 free_result( res );
652 return;
653 }
654 }
655 if (!res->replied)
656 {
657 if (len && (res->data = memdup( data, len ))) res->data_size = len;
658 store_message_result( res, result, error );
659 }
660 }
661
662 static int match_window( user_handle_t win, user_handle_t msg_win )
663 {
664 if (!win) return 1;
665 if (win == -1 || win == 1) return !msg_win;
666 if (msg_win == win) return 1;
667 return is_child_window( win, msg_win );
668 }
669
670 /* retrieve a posted message */
671 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
672 unsigned int first, unsigned int last, unsigned int flags,
673 struct get_message_reply *reply )
674 {
675 struct message *msg;
676
677 /* check against the filters */
678 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
679 {
680 if (!match_window( win, msg->win )) continue;
681 if (!check_msg_filter( msg->msg, first, last )) continue;
682 goto found; /* found one */
683 }
684 return 0;
685
686 /* return it to the app */
687 found:
688 reply->total = msg->data_size;
689 if (msg->data_size > get_reply_max_size())
690 {
691 set_error( STATUS_BUFFER_OVERFLOW );
692 return 1;
693 }
694 reply->type = msg->type;
695 reply->win = msg->win;
696 reply->msg = msg->msg;
697 reply->wparam = msg->wparam;
698 reply->lparam = msg->lparam;
699 reply->time = msg->time;
700
701 if (flags & PM_REMOVE)
702 {
703 if (msg->data)
704 {
705 set_reply_data_ptr( msg->data, msg->data_size );
706 msg->data = NULL;
707 msg->data_size = 0;
708 }
709 remove_queue_message( queue, msg, POST_MESSAGE );
710 }
711 else if (msg->data) set_reply_data( msg->data, msg->data_size );
712
713 return 1;
714 }
715
716 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
717 struct get_message_reply *reply )
718 {
719 if (queue->quit_message)
720 {
721 reply->total = 0;
722 reply->type = MSG_POSTED;
723 reply->win = 0;
724 reply->msg = WM_QUIT;
725 reply->wparam = queue->exit_code;
726 reply->lparam = 0;
727 reply->time = get_tick_count();
728
729 if (flags & PM_REMOVE)
730 {
731 queue->quit_message = 0;
732 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
733 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
734 }
735 return 1;
736 }
737 else
738 return 0;
739 }
740
741 /* empty a message list and free all the messages */
742 static void empty_msg_list( struct list *list )
743 {
744 struct list *ptr;
745
746 while ((ptr = list_head( list )) != NULL)
747 {
748 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
749 list_remove( &msg->entry );
750 free_message( msg );
751 }
752 }
753
754 /* cleanup all pending results when deleting a queue */
755 static void cleanup_results( struct msg_queue *queue )
756 {
757 struct list *entry;
758
759 while ((entry = list_head( &queue->send_result )) != NULL)
760 {
761 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
762 }
763
764 while ((entry = list_head( &queue->callback_result )) != NULL)
765 {
766 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
767 }
768
769 while (queue->recv_result)
770 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
771 }
772
773 /* check if the thread owning the queue is hung (not checking for messages) */
774 static int is_queue_hung( struct msg_queue *queue )
775 {
776 struct wait_queue_entry *entry;
777
778 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
779 return 0; /* less than 5 seconds since last get message -> not hung */
780
781 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
782 {
783 if (entry->thread->queue == queue)
784 return 0; /* thread is waiting on queue -> not hung */
785 }
786 return 1;
787 }
788
789 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
790 {
791 struct msg_queue *queue = (struct msg_queue *)obj;
792 struct process *process = entry->thread->process;
793
794 /* a thread can only wait on its own queue */
795 if (entry->thread->queue != queue)
796 {
797 set_error( STATUS_ACCESS_DENIED );
798 return 0;
799 }
800 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
801
802 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
803 set_fd_events( queue->fd, POLLIN );
804 add_queue( obj, entry );
805 return 1;
806 }
807
808 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
809 {
810 struct msg_queue *queue = (struct msg_queue *)obj;
811
812 remove_queue( obj, entry );
813 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
814 set_fd_events( queue->fd, 0 );
815 }
816
817 static void msg_queue_dump( struct object *obj, int verbose )
818 {
819 struct msg_queue *queue = (struct msg_queue *)obj;
820 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
821 queue->wake_bits, queue->wake_mask );
822 }
823
824 static int msg_queue_signaled( struct object *obj, struct thread *thread )
825 {
826 struct msg_queue *queue = (struct msg_queue *)obj;
827 int ret = 0;
828
829 if (queue->fd)
830 {
831 if ((ret = check_fd_events( queue->fd, POLLIN )))
832 /* stop waiting on select() if we are signaled */
833 set_fd_events( queue->fd, 0 );
834 else if (!list_empty( &obj->wait_queue ))
835 /* restart waiting on poll() if we are no longer signaled */
836 set_fd_events( queue->fd, POLLIN );
837 }
838 return ret || is_signaled( queue );
839 }
840
841 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
842 {
843 struct msg_queue *queue = (struct msg_queue *)obj;
844 queue->wake_mask = 0;
845 queue->changed_mask = 0;
846 return 0; /* Not abandoned */
847 }
848
849 static void msg_queue_destroy( struct object *obj )
850 {
851 struct msg_queue *queue = (struct msg_queue *)obj;
852 struct list *ptr;
853 int i;
854
855 cleanup_results( queue );
856 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
857
858 while ((ptr = list_head( &queue->pending_timers )))
859 {
860 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
861 list_remove( &timer->entry );
862 free( timer );
863 }
864 while ((ptr = list_head( &queue->expired_timers )))
865 {
866 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
867 list_remove( &timer->entry );
868 free( timer );
869 }
870 if (queue->timeout) remove_timeout_user( queue->timeout );
871 if (queue->input)
872 {
873 queue->input->cursor_count -= queue->cursor_count;
874 release_object( queue->input );
875 }
876 if (queue->hooks) release_object( queue->hooks );
877 if (queue->fd) release_object( queue->fd );
878 }
879
880 static void msg_queue_poll_event( struct fd *fd, int event )
881 {
882 struct msg_queue *queue = get_fd_user( fd );
883 assert( queue->obj.ops == &msg_queue_ops );
884
885 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
886 else set_fd_events( queue->fd, 0 );
887 wake_up( &queue->obj, 0 );
888 }
889
890 static void thread_input_dump( struct object *obj, int verbose )
891 {
892 struct thread_input *input = (struct thread_input *)obj;
893 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
894 input->focus, input->capture, input->active );
895 }
896
897 static void thread_input_destroy( struct object *obj )
898 {
899 struct thread_input *input = (struct thread_input *)obj;
900
901 empty_msg_list( &input->msg_list );
902 if (input->desktop)
903 {
904 if (input->desktop->foreground_input == input) input->desktop->foreground_input = NULL;
905 release_object( input->desktop );
906 }
907 }
908
909 /* fix the thread input data when a window is destroyed */
910 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
911 {
912 struct thread_input *input = queue->input;
913
914 if (window == input->focus) input->focus = 0;
915 if (window == input->capture) input->capture = 0;
916 if (window == input->active) input->active = 0;
917 if (window == input->menu_owner) input->menu_owner = 0;
918 if (window == input->move_size) input->move_size = 0;
919 if (window == input->caret) set_caret_window( input, 0 );
920 }
921
922 /* check if the specified window can be set in the input data of a given queue */
923 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
924 {
925 struct thread *thread;
926 int ret = 0;
927
928 if (!window) return 1; /* we can always clear the data */
929
930 if ((thread = get_window_thread( window )))
931 {
932 ret = (queue->input == thread->queue->input);
933 if (!ret) set_error( STATUS_ACCESS_DENIED );
934 release_object( thread );
935 }
936 else set_error( STATUS_INVALID_HANDLE );
937
938 return ret;
939 }
940
941 /* make sure the specified thread has a queue */
942 int init_thread_queue( struct thread *thread )
943 {
944 if (thread->queue) return 1;
945 return (create_msg_queue( thread, NULL ) != NULL);
946 }
947
948 /* attach two thread input data structures */
949 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
950 {
951 struct desktop *desktop;
952 struct thread_input *input;
953 int ret;
954
955 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
956 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
957 input = (struct thread_input *)grab_object( thread_to->queue->input );
958 if (input->desktop != desktop)
959 {
960 set_error( STATUS_ACCESS_DENIED );
961 release_object( input );
962 release_object( desktop );
963 return 0;
964 }
965 release_object( desktop );
966
967 ret = assign_thread_input( thread_from, input );
968 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
969 release_object( input );
970 return ret;
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 assign_thread_input( thread_from, input );
981 release_object( 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( unsigned char *keystate, unsigned char key, int down )
1110 {
1111 if (down)
1112 {
1113 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1114 keystate[key] |= down;
1115 }
1116 else keystate[key] &= ~0x80;
1117 }
1118
1119 /* update the input key state for a keyboard message */
1120 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1121 const struct message *msg )
1122 {
1123 unsigned char key;
1124 int down = 0;
1125
1126 switch (msg->msg)
1127 {
1128 case WM_LBUTTONDOWN:
1129 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1130 /* fall through */
1131 case WM_LBUTTONUP:
1132 set_input_key_state( keystate, VK_LBUTTON, down );
1133 break;
1134 case WM_MBUTTONDOWN:
1135 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1136 /* fall through */
1137 case WM_MBUTTONUP:
1138 set_input_key_state( keystate, VK_MBUTTON, down );
1139 break;
1140 case WM_RBUTTONDOWN:
1141 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1142 /* fall through */
1143 case WM_RBUTTONUP:
1144 set_input_key_state( keystate, VK_RBUTTON, down );
1145 break;
1146 case WM_XBUTTONDOWN:
1147 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1148 /* fall through */
1149 case WM_XBUTTONUP:
1150 if (msg->wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1151 else if (msg->wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1152 break;
1153 case WM_KEYDOWN:
1154 case WM_SYSKEYDOWN:
1155 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1156 /* fall through */
1157 case WM_KEYUP:
1158 case WM_SYSKEYUP:
1159 key = (unsigned char)msg->wparam;
1160 set_input_key_state( keystate, key, down );
1161 switch(key)
1162 {
1163 case VK_LCONTROL:
1164 case VK_RCONTROL:
1165 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1166 set_input_key_state( keystate, VK_CONTROL, down );
1167 break;
1168 case VK_LMENU:
1169 case VK_RMENU:
1170 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1171 set_input_key_state( keystate, VK_MENU, down );
1172 break;
1173 case VK_LSHIFT:
1174 case VK_RSHIFT:
1175 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1176 set_input_key_state( keystate, VK_SHIFT, down );
1177 break;
1178 }
1179 break;
1180 }
1181 }
1182
1183 /* release the hardware message currently being processed by the given thread */
1184 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1185 int remove, user_handle_t new_win )
1186 {
1187 struct thread_input *input = queue->input;
1188 struct message *msg;
1189
1190 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1191 {
1192 if (msg->unique_id == hw_id) break;
1193 }
1194 if (&msg->entry == &input->msg_list) return; /* not found */
1195
1196 /* clear the queue bit for that message */
1197 if (remove || new_win)
1198 {
1199 struct message *other;
1200 int clr_bit;
1201
1202 clr_bit = get_hardware_msg_bit( msg );
1203 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1204 {
1205 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1206 {
1207 clr_bit = 0;
1208 break;
1209 }
1210 }
1211 if (clr_bit) clear_queue_bits( queue, clr_bit );
1212 }
1213
1214 if (new_win) /* set the new window */
1215 {
1216 struct thread *owner = get_window_thread( new_win );
1217 if (owner)
1218 {
1219 msg->win = new_win;
1220 if (owner->queue->input != input)
1221 {
1222 list_remove( &msg->entry );
1223 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1224 {
1225 free_message( msg );
1226 release_object( owner );
1227 return;
1228 }
1229 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1230 }
1231 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1232 remove = 0;
1233 release_object( owner );
1234 }
1235 }
1236 if (remove)
1237 {
1238 update_input_key_state( input->desktop, input->keystate, msg );
1239 list_remove( &msg->entry );
1240 free_message( msg );
1241 }
1242 }
1243
1244 /* find the window that should receive a given hardware message */
1245 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1246 struct message *msg, unsigned int *msg_code )
1247 {
1248 struct hardware_msg_data *data = msg->data;
1249 user_handle_t win = 0;
1250
1251 *msg_code = msg->msg;
1252 if (is_keyboard_msg( msg ))
1253 {
1254 if (input && !(win = input->focus))
1255 {
1256 win = input->active;
1257 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1258 }
1259 }
1260 else /* mouse message */
1261 {
1262 if (!input || !(win = input->capture))
1263 {
1264 if (!(win = msg->win) || !is_window_visible( win ) || is_window_transparent( win ))
1265 win = window_from_point( desktop, data->x, data->y );
1266 }
1267 }
1268 return win;
1269 }
1270
1271 /* set the cursor position, clipping to the cursor clip rect */
1272 static void set_cursor_pos( struct desktop *desktop, int x, int y )
1273 {
1274 desktop->cursor_x = min( max( x, desktop->cursor_clip.left ), desktop->cursor_clip.right - 1 );
1275 desktop->cursor_y = min( max( y, desktop->cursor_clip.top ), desktop->cursor_clip.bottom - 1 );
1276 }
1277
1278 /* queue a hardware message into a given thread input */
1279 static void queue_hardware_message( struct desktop *desktop, struct message *msg )
1280 {
1281 user_handle_t win;
1282 struct thread *thread;
1283 struct thread_input *input;
1284 unsigned int msg_code;
1285 struct hardware_msg_data *data = msg->data;
1286
1287 update_input_key_state( desktop, desktop->keystate, msg );
1288 last_input_time = get_tick_count();
1289
1290 if (is_keyboard_msg( msg ))
1291 {
1292 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1293 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1294 msg->lparam &= ~(KF_EXTENDED << 16);
1295 }
1296 else
1297 {
1298 if (msg->msg == WM_MOUSEMOVE) set_cursor_pos( desktop, data->x, data->y );
1299 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1300 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1301 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1302 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1303 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1304 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1305 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1306 }
1307 data->x = desktop->cursor_x;
1308 data->y = desktop->cursor_y;
1309
1310 if (msg->win && (thread = get_window_thread( msg->win )))
1311 {
1312 input = thread->queue->input;
1313 release_object( thread );
1314 }
1315 else input = desktop->foreground_input;
1316
1317 win = find_hardware_message_window( desktop, input, msg, &msg_code );
1318 if (!win || !(thread = get_window_thread(win)))
1319 {
1320 if (input) update_input_key_state( input->desktop, input->keystate, msg );
1321 free( msg );
1322 return;
1323 }
1324 input = thread->queue->input;
1325
1326 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1327 else
1328 {
1329 msg->unique_id = 0; /* will be set once we return it to the app */
1330 list_add_tail( &input->msg_list, &msg->entry );
1331 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1332 }
1333 release_object( thread );
1334 }
1335
1336 /* send the low-level hook message for a given hardware message */
1337 static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
1338 const hw_input_t *input, struct msg_queue *sender )
1339 {
1340 struct thread *hook_thread;
1341 struct msg_queue *queue;
1342 struct message *msg;
1343 timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
1344 int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
1345
1346 if (!(hook_thread = get_first_global_hook( id ))) return 0;
1347 if (!(queue = hook_thread->queue)) return 0;
1348
1349 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1350
1351 msg->type = MSG_HOOK_LL;
1352 msg->win = 0;
1353 msg->msg = id;
1354 msg->wparam = hardware_msg->msg;
1355 msg->time = hardware_msg->time;
1356 msg->data_size = hardware_msg->data_size;
1357 msg->result = NULL;
1358
1359 if (input->type == INPUT_KEYBOARD)
1360 {
1361 unsigned short vkey = input->kbd.vkey;
1362 if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
1363 msg->lparam = (input->kbd.scan << 16) | vkey;
1364 }
1365 else msg->lparam = input->mouse.data << 16;
1366
1367 if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
1368 !(msg->result = alloc_message_result( sender, queue, msg, timeout )))
1369 {
1370 free_message( msg );
1371 return 0;
1372 }
1373 msg->result->hardware_msg = hardware_msg;
1374 msg->result->desktop = (struct desktop *)grab_object( desktop );
1375 list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
1376 set_queue_bits( queue, QS_SENDMESSAGE );
1377 return 1;
1378 }
1379
1380 /* queue a hardware message for a mouse event */
1381 static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1382 unsigned int hook_flags, struct msg_queue *sender )
1383 {
1384 struct hardware_msg_data *msg_data;
1385 struct message *msg;
1386 unsigned int i, time, flags;
1387 int wait = 0, x, y;
1388
1389 static const unsigned int messages[] =
1390 {
1391 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1392 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1393 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1394 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1395 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1396 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1397 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1398 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1399 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1400 0, /* 0x0200 = unused */
1401 0, /* 0x0400 = unused */
1402 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1403 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1404 };
1405
1406 flags = input->mouse.flags;
1407 time = input->mouse.time;
1408 if (!time) time = get_tick_count();
1409
1410 if (flags & MOUSEEVENTF_MOVE)
1411 {
1412 if (flags & MOUSEEVENTF_ABSOLUTE)
1413 {
1414 x = input->mouse.x;
1415 y = input->mouse.y;
1416 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1417 x == desktop->cursor_x && y == desktop->cursor_y)
1418 flags &= ~MOUSEEVENTF_MOVE;
1419 }
1420 else
1421 {
1422 x = desktop->cursor_x + input->mouse.x;
1423 y = desktop->cursor_y + input->mouse.y;
1424 }
1425 }
1426 else
1427 {
1428 x = desktop->cursor_x;
1429 y = desktop->cursor_y;
1430 }
1431
1432 for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
1433 {
1434 if (!messages[i]) continue;
1435 if (!(flags & (1 << i))) continue;
1436 flags &= ~(1 << i);
1437
1438 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1439 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1440 {
1441 free( msg );
1442 return 0;
1443 }
1444 memset( msg_data, 0, sizeof(*msg_data) );
1445
1446 msg->type = MSG_HARDWARE;
1447 msg->win = get_user_full_handle( win );
1448 msg->msg = messages[i];
1449 msg->wparam = input->mouse.data << 16;
1450 msg->lparam = 0;
1451 msg->time = time;
1452 msg->result = NULL;
1453 msg->data = msg_data;
1454 msg->data_size = sizeof(*msg_data);
1455 msg_data->x = x;
1456 msg_data->y = y;
1457 msg_data->info = input->mouse.info;
1458 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLMHF_INJECTED;
1459
1460 /* specify a sender only when sending the last message */
1461 if (!(flags & ((1 << sizeof(messages)/sizeof(messages[0])) - 1)))
1462 {
1463 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1464 queue_hardware_message( desktop, msg );
1465 }
1466 else if (!send_hook_ll_message( desktop, msg, input, NULL ))
1467 queue_hardware_message( desktop, msg );
1468 }
1469 return wait;
1470 }
1471
1472 /* queue a hardware message for a keyboard event */
1473 static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1474 unsigned int hook_flags, struct msg_queue *sender )
1475 {
1476 struct hardware_msg_data *msg_data;
1477 struct message *msg;
1478 unsigned char vkey = input->kbd.vkey;
1479 int wait;
1480
1481 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1482 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1483 {
1484 free( msg );
1485 return 0;
1486 }
1487 memset( msg_data, 0, sizeof(*msg_data) );
1488
1489 msg->type = MSG_HARDWARE;
1490 msg->win = get_user_full_handle( win );
1491 msg->lparam = (input->kbd.scan << 16) | 1; /* repeat count */
1492 msg->time = input->kbd.time;
1493 msg->result = NULL;
1494 msg->data = msg_data;
1495 msg->data_size = sizeof(*msg_data);
1496 msg_data->info = input->kbd.info;
1497 if (!msg->time) msg->time = get_tick_count();
1498 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLKHF_INJECTED;
1499
1500 if (input->kbd.flags & KEYEVENTF_UNICODE)
1501 {
1502 msg->wparam = VK_PACKET;
1503 }
1504 else
1505 {
1506 unsigned int flags = 0;
1507 switch (vkey)
1508 {
1509 case VK_MENU:
1510 case VK_LMENU:
1511 case VK_RMENU:
1512 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1513 break;
1514 case VK_CONTROL:
1515 case VK_LCONTROL:
1516 case VK_RCONTROL:
1517 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1518 break;
1519 case VK_SHIFT:
1520 case VK_LSHIFT:
1521 case VK_RSHIFT:
1522 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1523 break;
1524 }
1525 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
1526 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1527 if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
1528 else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
1529
1530 msg->wparam = vkey;
1531 msg->lparam |= flags << 16;
1532 msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
1533 }
1534
1535 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1536
1537 switch (vkey)
1538 {
1539 case VK_LMENU:
1540 case VK_RMENU:
1541 if (input->kbd.flags & KEYEVENTF_KEYUP)
1542 {
1543 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1544 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1545 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1546 msg->msg = WM_SYSKEYUP;
1547 desktop->keystate[VK_MENU] &= ~0x02;
1548 }
1549 else
1550 {
1551 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1552 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1553 msg->msg = WM_SYSKEYDOWN;
1554 desktop->keystate[VK_MENU] |= 0x02;
1555 }
1556 break;
1557
1558 case VK_LCONTROL:
1559 case VK_RCONTROL:
1560 /* send WM_SYSKEYUP on release if Alt still pressed */
1561 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1562 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1563 msg->msg = WM_SYSKEYUP;
1564 desktop->keystate[VK_MENU] &= ~0x02;
1565 break;
1566
1567 default:
1568 /* send WM_SYSKEY for Alt-anykey and for F10 */
1569 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1570 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1571 /* fall through */
1572 case VK_F10:
1573 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1574 desktop->keystate[VK_MENU] &= ~0x02;
1575 break;
1576 }
1577 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1578 queue_hardware_message( desktop, msg );
1579
1580 return wait;
1581 }
1582
1583 /* queue a hardware message for a custom type of event */
1584 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
1585 const hw_input_t *input )
1586 {
1587 struct hardware_msg_data *msg_data;
1588 struct message *msg;
1589
1590 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1591 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1592 {
1593 free( msg );
1594 return;
1595 }
1596 memset( msg_data, 0, sizeof(*msg_data) );
1597
1598 msg->type = MSG_HARDWARE;
1599 msg->win = get_user_full_handle( win );
1600 msg->msg = input->hw.msg;
1601 msg->wparam = 0;
1602 msg->lparam = input->hw.lparam;
1603 msg->time = get_tick_count();
1604 msg->result = NULL;
1605 msg->data = msg_data;
1606 msg->data_size = sizeof(*msg_data);
1607
1608 queue_hardware_message( desktop, msg );
1609 }
1610
1611 /* check message filter for a hardware message */
1612 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1613 user_handle_t filter_win, unsigned int first, unsigned int last )
1614 {
1615 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1616 {
1617 /* we can only test the window for a keyboard message since the
1618 * dest window for a mouse message depends on hittest */
1619 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1620 return 0;
1621 /* the message code is final for a keyboard message, we can simply check it */
1622 return check_msg_filter( msg_code, first, last );
1623 }
1624 else /* mouse message */
1625 {
1626 /* we need to check all possible values that the message can have in the end */
1627
1628 if (check_msg_filter( msg_code, first, last )) return 1;
1629 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1630
1631 /* all other messages can become non-client messages */
1632 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1633
1634 /* clicks can become double-clicks or non-client double-clicks */
1635 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1636 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1637 {
1638 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1639 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1640 }
1641 return 0;
1642 }
1643 }
1644
1645
1646 /* find a hardware message for the given queue */
1647 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1648 unsigned int first, unsigned int last, struct get_message_reply *reply )
1649 {
1650 struct thread_input *input = thread->queue->input;
1651 struct thread *win_thread;
1652 struct list *ptr;
1653 user_handle_t win;
1654 int clear_bits, got_one = 0;
1655 unsigned int msg_code;
1656
1657 ptr = list_head( &input->msg_list );
1658 if (hw_id)
1659 {
1660 while (ptr)
1661 {
1662 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1663 if (msg->unique_id == hw_id) break;
1664 ptr = list_next( &input->msg_list, ptr );
1665 }
1666 if (!ptr) ptr = list_head( &input->msg_list );
1667 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1668 }
1669
1670 if (ptr == list_head( &input->msg_list ))
1671 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1672 else
1673 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1674
1675 while (ptr)
1676 {
1677 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1678 struct hardware_msg_data *data = msg->data;
1679
1680 ptr = list_next( &input->msg_list, ptr );
1681 win = find_hardware_message_window( input->desktop, input, msg, &msg_code );
1682 if (!win || !(win_thread = get_window_thread( win )))
1683 {
1684 /* no window at all, remove it */
1685 update_input_key_state( input->desktop, input->keystate, msg );
1686 list_remove( &msg->entry );
1687 free_message( msg );
1688 continue;
1689 }
1690 if (win_thread != thread)
1691 {
1692 if (win_thread->queue->input == input)
1693 {
1694 /* wake the other thread */
1695 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1696 got_one = 1;
1697 }
1698 else
1699 {
1700 /* for another thread input, drop it */
1701 update_input_key_state( input->desktop, input->keystate, msg );
1702 list_remove( &msg->entry );
1703 free_message( msg );
1704 }
1705 release_object( win_thread );
1706 continue;
1707 }
1708 release_object( win_thread );
1709
1710 /* if we already got a message for another thread, or if it doesn't
1711 * match the filter we skip it */
1712 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1713 {
1714 clear_bits &= ~get_hardware_msg_bit( msg );
1715 continue;
1716 }
1717 /* now we can return it */
1718 if (!msg->unique_id) msg->unique_id = get_unique_id();
1719 reply->type = MSG_HARDWARE;
1720 reply->win = win;
1721 reply->msg = msg_code;
1722 reply->wparam = msg->wparam;
1723 reply->lparam = msg->lparam;
1724 reply->time = msg->time;
1725
1726 data->hw_id = msg->unique_id;
1727 set_reply_data( msg->data, msg->data_size );
1728 return 1;
1729 }
1730 /* nothing found, clear the hardware queue bits */
1731 clear_queue_bits( thread->queue, clear_bits );
1732 return 0;
1733 }
1734
1735 /* increment (or decrement if 'incr' is negative) the queue paint count */
1736 void inc_queue_paint_count( struct thread *thread, int incr )
1737 {
1738 struct msg_queue *queue = thread->queue;
1739
1740 assert( queue );
1741
1742 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1743
1744 if (queue->paint_count)
1745 set_queue_bits( queue, QS_PAINT );
1746 else
1747 clear_queue_bits( queue, QS_PAINT );
1748 }
1749
1750
1751 /* remove all messages and timers belonging to a certain window */
1752 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1753 {
1754 struct msg_queue *queue = thread->queue;
1755 struct list *ptr;
1756 int i;
1757
1758 if (!queue) return;
1759
1760 /* remove timers */
1761
1762 ptr = list_head( &queue->pending_timers );
1763 while (ptr)
1764 {
1765 struct list *next = list_next( &queue->pending_timers, ptr );
1766 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1767 if (timer->win == win) free_timer( queue, timer );
1768 ptr = next;
1769 }
1770 ptr = list_head( &queue->expired_timers );
1771 while (ptr)
1772 {
1773 struct list *next = list_next( &queue->expired_timers, ptr );
1774 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1775 if (timer->win == win) free_timer( queue, timer );
1776 ptr = next;
1777 }
1778
1779 /* remove messages */
1780 for (i = 0; i < NB_MSG_KINDS; i++)
1781 {
1782 struct list *ptr, *next;
1783
1784 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1785 {
1786 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1787 if (msg->win == win) remove_queue_message( queue, msg, i );
1788 }
1789 }
1790
1791 thread_input_cleanup_window( queue, win );
1792 }
1793
1794 /* post a message to a window; used by socket handling */
1795 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1796 {
1797 struct message *msg;
1798 struct thread *thread = get_window_thread( win );
1799
1800 if (!thread) return;
1801
1802 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1803 {
1804 msg->type = MSG_POSTED;
1805 msg->win = get_user_full_handle( win );
1806 msg->msg = message;
1807 msg->wparam = wparam;
1808 msg->lparam = lparam;
1809 msg->time = get_tick_count();
1810 msg->result = NULL;
1811 msg->data = NULL;
1812 msg->data_size = 0;
1813
1814 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1815 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1816 }
1817 release_object( thread );
1818 }
1819
1820 /* post a win event */
1821 void post_win_event( struct thread *thread, unsigned int event,
1822 user_handle_t win, unsigned int object_id,
1823 unsigned int child_id, client_ptr_t hook_proc,
1824 const WCHAR *module, data_size_t module_size,
1825 user_handle_t hook)
1826 {
1827 struct message *msg;
1828
1829 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1830 {
1831 struct winevent_msg_data *data;
1832
1833 msg->type = MSG_WINEVENT;
1834 msg->win = get_user_full_handle( win );
1835 msg->msg = event;
1836 msg->wparam = object_id;
1837 msg->lparam = child_id;
1838 msg->time = get_tick_count();
1839 msg->result = NULL;
1840
1841 if ((data = malloc( sizeof(*data) + module_size )))
1842 {
1843 data->hook = hook;
1844 data->tid = get_thread_id( current );
1845 data->hook_proc = hook_proc;
1846 memcpy( data + 1, module, module_size );
1847
1848 msg->data = data;
1849 msg->data_size = sizeof(*data) + module_size;
1850
1851 if (debug_level > 1)
1852 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1853 get_thread_id(thread), event, win, object_id, child_id );
1854 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1855 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1856 }
1857 else
1858 free( msg );
1859 }
1860 }
1861
1862
1863 /* check if the thread owning the window is hung */
1864 DECL_HANDLER(is_window_hung)
1865 {
1866 struct thread *thread;
1867
1868 thread = get_window_thread( req->win );
1869 if (thread)
1870 {
1871 reply->is_hung = is_queue_hung( thread->queue );
1872 release_object( thread );
1873 }
1874 else reply->is_hung = 0;
1875 }
1876
1877
1878 /* get the message queue of the current thread */
1879 DECL_HANDLER(get_msg_queue)
1880 {
1881 struct msg_queue *queue = get_current_queue();
1882
1883 reply->handle = 0;
1884 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1885 }
1886
1887
1888 /* set the file descriptor associated to the current thread queue */
1889 DECL_HANDLER(set_queue_fd)
1890 {
1891 struct msg_queue *queue = get_current_queue();
1892 struct file *file;
1893 int unix_fd;
1894
1895 if (queue->fd) /* fd can only be set once */
1896 {
1897 set_error( STATUS_ACCESS_DENIED );
1898 return;
1899 }
1900 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1901
1902 if ((unix_fd = get_file_unix_fd( file )) != -1)
1903 {
1904 if ((unix_fd = dup( unix_fd )) != -1)
1905 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1906 else
1907 file_set_error();
1908 }
1909 release_object( file );
1910 }
1911
1912
1913 /* set the current message queue wakeup mask */
1914 DECL_HANDLER(set_queue_mask)
1915 {
1916 struct msg_queue *queue = get_current_queue();
1917
1918 if (queue)
1919 {
1920 queue->wake_mask = req->wake_mask;
1921 queue->changed_mask = req->changed_mask;
1922 reply->wake_bits = queue->wake_bits;
1923 reply->changed_bits = queue->changed_bits;
1924 if (is_signaled( queue ))
1925 {
1926 /* if skip wait is set, do what would have been done in the subsequent wait */
1927 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1928 else wake_up( &queue->obj, 0 );
1929 }
1930 }
1931 }
1932
1933
1934 /* get the current message queue status */
1935 DECL_HANDLER(get_queue_status)
1936 {
1937 struct msg_queue *queue = current->queue;
1938 if (queue)
1939 {
1940 reply->wake_bits = queue->wake_bits;
1941 reply->changed_bits = queue->changed_bits;
1942 if (req->clear) queue->changed_bits = 0;
1943 }
1944 else reply->wake_bits = reply->changed_bits = 0;
1945 }
1946
1947
1948 /* send a message to a thread queue */
1949 DECL_HANDLER(send_message)
1950 {
1951 struct message *msg;
1952 struct msg_queue *send_queue = get_current_queue();
1953 struct msg_queue *recv_queue = NULL;
1954 struct thread *thread = NULL;
1955
1956 if (!(thread = get_thread_from_id( req->id ))) return;
1957
1958 if (!(recv_queue = thread->queue))
1959 {
1960 set_error( STATUS_INVALID_PARAMETER );
1961 release_object( thread );
1962 return;
1963 }
1964 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1965 {
1966 set_error( STATUS_TIMEOUT );
1967 release_object( thread );
1968 return;
1969 }
1970
1971 if ((msg = mem_alloc( sizeof(*msg) )))
1972 {
1973 msg->type = req->type;
1974 msg->win = get_user_full_handle( req->win );
1975 msg->msg = req->msg;
1976 msg->wparam = req->wparam;
1977 msg->lparam = req->lparam;
1978 msg->time = get_tick_count();
1979 msg->result = NULL;
1980 msg->data = NULL;
1981 msg->data_size = get_req_data_size();
1982
1983 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1984 {
1985 free( msg );
1986 release_object( thread );
1987 return;
1988 }
1989
1990 switch(msg->type)
1991 {
1992 case MSG_OTHER_PROCESS:
1993 case MSG_ASCII:
1994 case MSG_UNICODE:
1995 case MSG_CALLBACK:
1996 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1997 {
1998 free_message( msg );
1999 break;
2000 }
2001 /* fall through */
2002 case MSG_NOTIFY:
2003 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
2004 set_queue_bits( recv_queue, QS_SENDMESSAGE );
2005 break;
2006 case MSG_POSTED:
2007 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
2008 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2009 break;
2010 case MSG_HARDWARE: /* should use send_hardware_message instead */
2011 case MSG_CALLBACK_RESULT: /* cannot send this one */
2012 case MSG_HOOK_LL: /* generated internally */
2013 default:
2014 set_error( STATUS_INVALID_PARAMETER );
2015 free( msg );
2016 break;
2017 }
2018 }
2019 release_object( thread );
2020 }
2021
2022 /* send a hardware message to a thread queue */
2023 DECL_HANDLER(send_hardware_message)
2024 {
2025 struct thread *thread = NULL;
2026 struct desktop *desktop;
2027 struct msg_queue *sender = get_current_queue();
2028
2029 if (req->win)
2030 {
2031 if (!(thread = get_window_thread( req->win ))) return;
2032 desktop = (struct desktop *)grab_object( thread->queue->input->desktop );
2033 }
2034 else if (!(desktop = get_thread_desktop( current, 0 ))) return;
2035
2036 switch (req->input.type)
2037 {
2038 case INPUT_MOUSE:
2039 reply->wait = queue_mouse_message( desktop, req->win, &req->input, req->flags, sender );
2040 break;
2041 case INPUT_KEYBOARD:
2042 reply->wait = queue_keyboard_message( desktop, req->win, &req->input, req->flags, sender );
2043 break;
2044 case INPUT_HARDWARE:
2045 queue_custom_hardware_message( desktop, req->win, &req->input );
2046 break;
2047 default:
2048 set_error( STATUS_INVALID_PARAMETER );
2049 }
2050 if (thread) release_object( thread );
2051 release_object( desktop );
2052 }
2053
2054 /* post a quit message to the current queue */
2055 DECL_HANDLER(post_quit_message)
2056 {
2057 struct msg_queue *queue = get_current_queue();
2058
2059 if (!queue)
2060 return;
2061
2062 queue->quit_message = 1;
2063 queue->exit_code = req->exit_code;
2064 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2065 }
2066
2067 /* get a message from the current queue */
2068 DECL_HANDLER(get_message)
2069 {
2070 struct timer *timer;
2071 struct list *ptr;
2072 struct msg_queue *queue = get_current_queue();
2073 user_handle_t get_win = get_user_full_handle( req->get_win );
2074 unsigned int filter = req->flags >> 16;
2075
2076 reply->active_hooks = get_active_hooks();
2077
2078 if (!queue) return;
2079 queue->last_get_msg = current_time;
2080 if (!filter) filter = QS_ALLINPUT;
2081
2082 /* first check for sent messages */
2083 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2084 {
2085 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2086 receive_message( queue, msg, reply );
2087 return;
2088 }
2089
2090 /* clear changed bits so we can wait on them if we don't find a message */
2091 if (filter & QS_POSTMESSAGE)
2092 {
2093 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2094 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2095 }
2096 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2097 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2098
2099 /* then check for posted messages */
2100 if ((filter & QS_POSTMESSAGE) &&
2101 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2102 return;
2103
2104 /* only check for quit messages if not posted messages pending.
2105 * note: the quit message isn't filtered */
2106 if (get_quit_message( queue, req->flags, reply ))
2107 return;
2108
2109 /* then check for any raw hardware message */
2110 if ((filter & QS_INPUT) &&
2111 filter_contains_hw_range( req->get_first, req->get_last ) &&
2112 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
2113 return;
2114
2115 /* now check for WM_PAINT */
2116 if ((filter & QS_PAINT) &&
2117 queue->paint_count &&
2118 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2119 (reply->win = find_window_to_repaint( get_win, current )))
2120 {
2121 reply->type = MSG_POSTED;
2122 reply->msg = WM_PAINT;
2123 reply->wparam = 0;
2124 reply->lparam = 0;
2125 reply->time = get_tick_count();
2126 return;
2127 }
2128
2129 /* now check for timer */
2130 if ((filter & QS_TIMER) &&
2131 (timer = find_expired_timer( queue, get_win, req->get_first,
2132 req->get_last, (req->flags & PM_REMOVE) )))
2133 {
2134 reply->type = MSG_POSTED;
2135 reply->win = timer->win;
2136 reply->msg = timer->msg;
2137 reply->wparam = timer->id;
2138 reply->lparam = timer->lparam;
2139 reply->time = get_tick_count();
2140 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2141 set_event( current->process->idle_event );
2142 return;
2143 }
2144
2145 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2146 queue->wake_mask = req->wake_mask;
2147 queue->changed_mask = req->changed_mask;
2148 set_error( STATUS_PENDING ); /* FIXME */
2149 }
2150
2151
2152 /* reply to a sent message */
2153 DECL_HANDLER(reply_message)
2154 {
2155 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2156 else if (current->queue->recv_result)
2157 reply_message( current->queue, req->result, 0, req->remove,
2158 get_req_data(), get_req_data_size() );
2159 }
2160
2161
2162 /* accept the current hardware message */
2163 DECL_HANDLER(accept_hardware_message)
2164 {
2165 if (current->queue)
2166 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
2167 else
2168 set_error( STATUS_ACCESS_DENIED );
2169 }
2170
2171
2172 /* retrieve the reply for the last message sent */
2173 DECL_HANDLER(get_message_reply)
2174 {
2175 struct message_result *result;
2176 struct list *entry;
2177 struct msg_queue *queue = current->queue;
2178
2179 if (queue)
2180 {
2181 set_error( STATUS_PENDING );
2182 reply->result = 0;
2183
2184 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2185
2186 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2187 if (result->replied || req->cancel)
2188 {
2189 if (result->replied)
2190 {
2191 reply->result = result->result;
2192 set_error( result->error );
2193 if (result->data)
2194 {
2195 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2196 set_reply_data_ptr( result->data, data_len );
2197 result->data = NULL;
2198 result->data_size = 0;
2199 }
2200 }
2201 remove_result_from_sender( result );
2202
2203 entry = list_head( &queue->send_result );
2204 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2205 else
2206 {
2207 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2208 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
2209 }
2210 }
2211 }
2212 else set_error( STATUS_ACCESS_DENIED );
2213 }
2214
2215
2216 /* set a window timer */
2217 DECL_HANDLER(set_win_timer)
2218 {
2219 struct timer *timer;
2220 struct msg_queue *queue;
2221 struct thread *thread = NULL;
2222 user_handle_t win = 0;
2223 lparam_t id = req->id;
2224
2225 if (req->win)
2226 {
2227 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2228 {
2229 set_error( STATUS_INVALID_HANDLE );
2230 return;
2231 }
2232 if (thread->process != current->process)
2233 {
2234 release_object( thread );
2235 set_error( STATUS_ACCESS_DENIED );
2236 return;
2237 }
2238 queue = thread->queue;
2239 /* remove it if it existed already */
2240 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2241 }
2242 else
2243 {
2244 queue = get_current_queue();
2245 /* look for a timer with this id */
2246 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2247 {
2248 /* free and reuse id */
2249 free_timer( queue, timer );
2250 }
2251 else
2252 {
2253 /* find a free id for it */
2254 do
2255 {
2256 id = queue->next_timer_id;
2257 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2258 }
2259 while (find_timer( queue, 0, req->msg, id ));
2260 }
2261 }
2262
2263 if ((timer = set_timer( queue, req->rate )))
2264 {
2265 timer->win = win;
2266 timer->msg = req->msg;
2267 timer->id = id;
2268 timer->lparam = req->lparam;
2269 reply->id = id;
2270 }
2271 if (thread) release_object( thread );
2272 }
2273
2274 /* kill a window timer */
2275 DECL_HANDLER(kill_win_timer)
2276 {
2277 struct timer *timer;
2278 struct thread *thread;
2279 user_handle_t win = 0;
2280
2281 if (req->win)
2282 {
2283 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2284 {
2285 set_error( STATUS_INVALID_HANDLE );
2286 return;
2287 }
2288 if (thread->process != current->process)
2289 {
2290 release_object( thread );
2291 set_error( STATUS_ACCESS_DENIED );
2292 return;
2293 }
2294 }
2295 else thread = (struct thread *)grab_object( current );
2296
2297 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2298 free_timer( thread->queue, timer );
2299 else
2300 set_error( STATUS_INVALID_PARAMETER );
2301
2302 release_object( thread );
2303 }
2304
2305
2306 /* attach (or detach) thread inputs */
2307 DECL_HANDLER(attach_thread_input)
2308 {
2309 struct thread *thread_from = get_thread_from_id( req->tid_from );
2310 struct thread *thread_to = get_thread_from_id( req->tid_to );
2311
2312 if (!thread_from || !thread_to)
2313 {
2314 if (thread_from) release_object( thread_from );
2315 if (thread_to) release_object( thread_to );
2316 return;
2317 }
2318 if (thread_from != thread_to)
2319 {
2320 if (req->attach) attach_thread_input( thread_from, thread_to );
2321 else
2322 {
2323 if (thread_from->queue && thread_to->queue &&
2324 thread_from->queue->input == thread_to->queue->input)
2325 detach_thread_input( thread_from );
2326 else
2327 set_error( STATUS_ACCESS_DENIED );
2328 }
2329 }
2330 else set_error( STATUS_ACCESS_DENIED );
2331 release_object( thread_from );
2332 release_object( thread_to );
2333 }
2334
2335
2336 /* get thread input data */
2337 DECL_HANDLER(get_thread_input)
2338 {
2339 struct thread *thread = NULL;
2340 struct desktop *desktop;
2341 struct thread_input *input;
2342
2343 if (req->tid)
2344 {
2345 if (!(thread = get_thread_from_id( req->tid ))) return;
2346 if (!(desktop = get_thread_desktop( thread, 0 )))
2347 {
2348 release_object( thread );
2349 return;
2350 }
2351 input = thread->queue ? thread->queue->input : NULL;
2352 }
2353 else
2354 {
2355 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2356 input = desktop->foreground_input; /* get the foreground thread info */
2357 }
2358
2359 if (input)
2360 {
2361 reply->focus = input->focus;
2362 reply->capture = input->capture;
2363 reply->active = input->active;
2364 reply->menu_owner = input->menu_owner;
2365 reply->move_size = input->move_size;
2366 reply->caret = input->caret;
2367 reply->cursor = input->cursor;
2368 reply->show_count = input->cursor_count;
2369 reply->rect = input->caret_rect;
2370 }
2371
2372 /* foreground window is active window of foreground thread */
2373 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
2374 if (thread) release_object( thread );
2375 release_object( desktop );
2376 }
2377
2378
2379 /* retrieve queue keyboard state for a given thread */
2380 DECL_HANDLER(get_key_state)
2381 {
2382 struct thread *thread;
2383 struct desktop *desktop;
2384 data_size_t size = min( 256, get_reply_max_size() );
2385
2386 if (!req->tid) /* get global async key state */
2387 {
2388 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2389 if (req->key >= 0)
2390 {
2391 reply->state = desktop->keystate[req->key & 0xff];
2392 desktop->keystate[req->key & 0xff] &= ~0x40;
2393 }
2394 set_reply_data( desktop->keystate, size );
2395 release_object( desktop );
2396 }
2397 else
2398 {
2399 if (!(thread = get_thread_from_id( req->tid ))) return;
2400 if (thread->queue)
2401 {
2402 if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
2403 set_reply_data( thread->queue->input->keystate, size );
2404 }
2405 release_object( thread );
2406 }
2407 }
2408
2409
2410 /* set queue keyboard state for a given thread */
2411 DECL_HANDLER(set_key_state)
2412 {
2413 struct thread *thread;
2414 struct desktop *desktop;
2415 data_size_t size = min( 256, get_req_data_size() );
2416
2417 if (!req->tid) /* set global async key state */
2418 {
2419 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2420 memcpy( desktop->keystate, get_req_data(), size );
2421 release_object( desktop );
2422 }
2423 else
2424 {
2425 if (!(thread = get_thread_from_id( req->tid ))) return;
2426 if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
2427 release_object( thread );
2428 }
2429 }
2430
2431
2432 /* set the system foreground window */
2433 DECL_HANDLER(set_foreground_window)
2434 {
2435 struct thread *thread = NULL;
2436 struct desktop *desktop;
2437 struct msg_queue *queue = get_current_queue();
2438
2439 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2440 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
2441 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
2442 reply->send_msg_new = FALSE;
2443
2444 if (is_top_level_window( req->handle ) &&
2445 ((thread = get_window_thread( req->handle ))) &&
2446 (thread->queue->input->desktop == desktop))
2447 {
2448 desktop->foreground_input = thread->queue->input;
2449 reply->send_msg_new = (desktop->foreground_input != queue->input);
2450 }
2451 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2452
2453 if (thread) release_object( thread );
2454 release_object( desktop );
2455 }
2456
2457
2458 /* set the current thread focus window */
2459 DECL_HANDLER(set_focus_window)
2460 {
2461 struct msg_queue *queue = get_current_queue();
2462
2463 reply->previous = 0;
2464 if (queue && check_queue_input_window( queue, req->handle ))
2465 {
2466 reply->previous = queue->input->focus;
2467 queue->input->focus = get_user_full_handle( req->handle );
2468 }
2469 }
2470
2471
2472 /* set the current thread active window */
2473 DECL_HANDLER(set_active_window)
2474 {
2475 struct msg_queue *queue = get_current_queue();
2476
2477 reply->previous = 0;
2478 if (queue && check_queue_input_window( queue, req->handle ))
2479 {
2480 if (!req->handle || make_window_active( req->handle ))
2481 {
2482 reply->previous = queue->input->active;
2483 queue->input->active = get_user_full_handle( req->handle );
2484 }
2485 else set_error( STATUS_INVALID_HANDLE );
2486 }
2487 }
2488
2489
2490 /* set the current thread capture window */
2491 DECL_HANDLER(set_capture_window)
2492 {
2493 struct msg_queue *queue = get_current_queue();
2494
2495 reply->previous = reply->full_handle = 0;
2496 if (queue && check_queue_input_window( queue, req->handle ))
2497 {
2498 struct thread_input *input = queue->input;
2499
2500 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
2501 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
2502 {
2503 set_error(STATUS_ACCESS_DENIED);
2504 return;
2505 }
2506 reply->previous = input->capture;
2507 input->capture = get_user_full_handle( req->handle );
2508 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2509 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2510 reply->full_handle = input->capture;
2511 }
2512 }
2513
2514
2515 /* Set the current thread caret window */
2516 DECL_HANDLER(set_caret_window)
2517 {
2518 struct msg_queue *queue = get_current_queue();
2519
2520 reply->previous = 0;
2521 if (queue && check_queue_input_window( queue, req->handle ))
2522 {
2523 struct thread_input *input = queue->input;
2524
2525 reply->previous = input->caret;
2526 reply->old_rect = input->caret_rect;
2527 reply->old_hide = input->caret_hide;
2528 reply->old_state = input->caret_state;
2529
2530 set_caret_window( input, get_user_full_handle(req->handle) );
2531 input->caret_rect.right = input->caret_rect.left + req->width;
2532 input->caret_rect.bottom = input->caret_rect.top + req->height;
2533 }
2534 }
2535
2536
2537 /* Set the current thread caret information */
2538 DECL_HANDLER(set_caret_info)
2539 {
2540 struct msg_queue *queue = get_current_queue();
2541 struct thread_input *input;
2542
2543 if (!queue) return;
2544 input = queue->input;
2545 reply->full_handle = input->caret;
2546 reply->old_rect = input->caret_rect;
2547 reply->old_hide = input->caret_hide;
2548 reply->old_state = input->caret_state;
2549
2550 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2551 {
2552 set_error( STATUS_ACCESS_DENIED );
2553 return;
2554 }
2555 if (req->flags & SET_CARET_POS)
2556 {
2557 input->caret_rect.right += req->x - input->caret_rect.left;
2558 input->caret_rect.bottom += req->y - input->caret_rect.top;
2559 input->caret_rect.left = req->x;
2560 input->caret_rect.top = req->y;
2561 }
2562 if (req->flags & SET_CARET_HIDE)
2563 {
2564 input->caret_hide += req->hide;
2565 if (input->caret_hide < 0) input->caret_hide = 0;
2566 }
2567 if (req->flags & SET_CARET_STATE)
2568 {
2569 if (req->state == -1) input->caret_state = !input->caret_state;
2570 else input->caret_state = !!req->state;
2571 }
2572 }
2573
2574
2575 /* get the time of the last input event */
2576 DECL_HANDLER(get_last_input_time)
2577 {
2578 reply->time = last_input_time;
2579 }
2580
2581 /* set/get the current cursor */
2582 DECL_HANDLER(set_cursor)
2583 {
2584 struct msg_queue *queue = get_current_queue();
2585 struct thread_input *input;
2586
2587 if (!queue) return;
2588 input = queue->input;
2589
2590 reply->prev_handle = input->cursor;
2591 reply->prev_count = input->cursor_count;
2592
2593 if (req->flags & SET_CURSOR_HANDLE)
2594 {
2595 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
2596 {
2597 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
2598 return;
2599 }
2600 input->cursor = req->handle;
2601 }
2602 if (req->flags & SET_CURSOR_COUNT)
2603 {
2604 queue->cursor_count += req->show_count;
2605 input->cursor_count += req->show_count;
2606 }
2607 if (req->flags & SET_CURSOR_POS)
2608 {
2609 set_cursor_pos( input->desktop, req->x, req->y );
2610 }
2611 if (req->flags & SET_CURSOR_CLIP)
2612 {
2613 rectangle_t top_rect;
2614 get_top_window_rectangle( input->desktop, &top_rect );
2615 if (!intersect_rect( &input->desktop->cursor_clip, &top_rect, &req->clip ))
2616 input->desktop->cursor_clip = top_rect;
2617 }
2618
2619 reply->new_x = input->desktop->cursor_x;
2620 reply->new_y = input->desktop->cursor_y;
2621 reply->new_clip = input->desktop->cursor_clip;
2622 }
Maarten's multimedia branch