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gdiplus: Don't settle on a font size until absolutely necessary.
[wine/multimedia.git] / server / queue.c
blob35448e5c033d43a9de6b642ef328ff98b3181895
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 /* change the foreground input and reset the cursor clip rect */
322 static void set_foreground_input( struct desktop *desktop, struct thread_input *input )
323 {
324 if (desktop->foreground_input == input) return;
325 get_top_window_rectangle( desktop, &desktop->cursor.clip );
326 desktop->foreground_input = input;
327 }
328
329 /* get the hook table for a given thread */
330 struct hook_table *get_queue_hooks( struct thread *thread )
331 {
332 if (!thread->queue) return NULL;
333 return thread->queue->hooks;
334 }
335
336 /* set the hook table for a given thread, allocating the queue if needed */
337 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
338 {
339 struct msg_queue *queue = thread->queue;
340 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
341 if (queue->hooks) release_object( queue->hooks );
342 queue->hooks = hooks;
343 }
344
345 /* check the queue status */
346 static inline int is_signaled( struct msg_queue *queue )
347 {
348 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
349 }
350
351 /* set some queue bits */
352 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
353 {
354 queue->wake_bits |= bits;
355 queue->changed_bits |= bits;
356 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
357 }
358
359 /* clear some queue bits */
360 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
361 {
362 queue->wake_bits &= ~bits;
363 queue->changed_bits &= ~bits;
364 }
365
366 /* check whether msg is a keyboard message */
367 static inline int is_keyboard_msg( struct message *msg )
368 {
369 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
370 }
371
372 /* check if message is matched by the filter */
373 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
374 {
375 return (msg >= first && msg <= last);
376 }
377
378 /* check whether a message filter contains at least one potential hardware message */
379 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
380 {
381 /* hardware message ranges are (in numerical order):
382 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
383 * WM_KEYFIRST .. WM_KEYLAST
384 * WM_MOUSEFIRST .. WM_MOUSELAST
385 */
386 if (last < WM_NCMOUSEFIRST) return 0;
387 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
388 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
389 if (first > WM_MOUSELAST) return 0;
390 return 1;
391 }
392
393 /* get the QS_* bit corresponding to a given hardware message */
394 static inline int get_hardware_msg_bit( struct message *msg )
395 {
396 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
397 if (is_keyboard_msg( msg )) return QS_KEY;
398 return QS_MOUSEBUTTON;
399 }
400
401 /* get the current thread queue, creating it if needed */
402 static inline struct msg_queue *get_current_queue(void)
403 {
404 struct msg_queue *queue = current->queue;
405 if (!queue) queue = create_msg_queue( current, NULL );
406 return queue;
407 }
408
409 /* get a (pseudo-)unique id to tag hardware messages */
410 static inline unsigned int get_unique_id(void)
411 {
412 static unsigned int id;
413 if (!++id) id = 1; /* avoid an id of 0 */
414 return id;
415 }
416
417 /* try to merge a message with the last in the list; return 1 if successful */
418 static int merge_message( struct thread_input *input, const struct message *msg )
419 {
420 struct message *prev;
421 struct list *ptr = list_tail( &input->msg_list );
422
423 if (!ptr) return 0;
424 prev = LIST_ENTRY( ptr, struct message, entry );
425 if (prev->result) return 0;
426 if (prev->win && msg->win && prev->win != msg->win) return 0;
427 if (prev->msg != msg->msg) return 0;
428 if (prev->type != msg->type) return 0;
429 /* now we can merge it */
430 prev->wparam = msg->wparam;
431 prev->lparam = msg->lparam;
432 prev->time = msg->time;
433 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
434 {
435 struct hardware_msg_data *prev_data = prev->data;
436 struct hardware_msg_data *msg_data = msg->data;
437 prev_data->x = msg_data->x;
438 prev_data->y = msg_data->y;
439 prev_data->info = msg_data->info;
440 }
441 return 1;
442 }
443
444 /* free a result structure */
445 static void free_result( struct message_result *result )
446 {
447 if (result->timeout) remove_timeout_user( result->timeout );
448 free( result->data );
449 if (result->callback_msg) free_message( result->callback_msg );
450 if (result->hardware_msg) free_message( result->hardware_msg );
451 if (result->desktop) release_object( result->desktop );
452 free( result );
453 }
454
455 /* remove the result from the sender list it is on */
456 static inline void remove_result_from_sender( struct message_result *result )
457 {
458 assert( result->sender );
459
460 list_remove( &result->sender_entry );
461 result->sender = NULL;
462 if (!result->receiver) free_result( result );
463 }
464
465 /* store the message result in the appropriate structure */
466 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
467 {
468 res->result = result;
469 res->error = error;
470 res->replied = 1;
471 if (res->timeout)
472 {
473 remove_timeout_user( res->timeout );
474 res->timeout = NULL;
475 }
476
477 if (res->hardware_msg)
478 {
479 if (!error && result) /* rejected by the hook */
480 free_message( res->hardware_msg );
481 else
482 queue_hardware_message( res->desktop, res->hardware_msg );
483
484 res->hardware_msg = NULL;
485 }
486
487 if (res->sender)
488 {
489 if (res->callback_msg)
490 {
491 /* queue the callback message in the sender queue */
492 struct callback_msg_data *data = res->callback_msg->data;
493 data->result = result;
494 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
495 set_queue_bits( res->sender, QS_SENDMESSAGE );
496 res->callback_msg = NULL;
497 remove_result_from_sender( res );
498 }
499 else
500 {
501 /* wake sender queue if waiting on this result */
502 if (list_head(&res->sender->send_result) == &res->sender_entry)
503 set_queue_bits( res->sender, QS_SMRESULT );
504 }
505 }
506 else if (!res->receiver) free_result( res );
507 }
508
509 /* free a message when deleting a queue or window */
510 static void free_message( struct message *msg )
511 {
512 struct message_result *result = msg->result;
513 if (result)
514 {
515 result->msg = NULL;
516 result->receiver = NULL;
517 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
518 }
519 free( msg->data );
520 free( msg );
521 }
522
523 /* remove (and free) a message from a message list */
524 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
525 enum message_kind kind )
526 {
527 list_remove( &msg->entry );
528 switch(kind)
529 {
530 case SEND_MESSAGE:
531 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
532 break;
533 case POST_MESSAGE:
534 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
535 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
536 break;
537 }
538 free_message( msg );
539 }
540
541 /* message timed out without getting a reply */
542 static void result_timeout( void *private )
543 {
544 struct message_result *result = private;
545
546 assert( !result->replied );
547
548 result->timeout = NULL;
549
550 if (result->msg) /* not received yet */
551 {
552 struct message *msg = result->msg;
553
554 result->msg = NULL;
555 msg->result = NULL;
556 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
557 result->receiver = NULL;
558 }
559 store_message_result( result, 0, STATUS_TIMEOUT );
560 }
561
562 /* allocate and fill a message result structure */
563 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
564 struct msg_queue *recv_queue,
565 struct message *msg, timeout_t timeout )
566 {
567 struct message_result *result = mem_alloc( sizeof(*result) );
568 if (result)
569 {
570 result->msg = msg;
571 result->sender = send_queue;
572 result->receiver = recv_queue;
573 result->replied = 0;
574 result->data = NULL;
575 result->data_size = 0;
576 result->timeout = NULL;
577 result->hardware_msg = NULL;
578 result->desktop = NULL;
579 result->callback_msg = NULL;
580
581 if (msg->type == MSG_CALLBACK)
582 {
583 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
584
585 if (!callback_msg)
586 {
587 free( result );
588 return NULL;
589 }
590 callback_msg->type = MSG_CALLBACK_RESULT;
591 callback_msg->win = msg->win;
592 callback_msg->msg = msg->msg;
593 callback_msg->wparam = 0;
594 callback_msg->lparam = 0;
595 callback_msg->time = get_tick_count();
596 callback_msg->result = NULL;
597 /* steal the data from the original message */
598 callback_msg->data = msg->data;
599 callback_msg->data_size = msg->data_size;
600 msg->data = NULL;
601 msg->data_size = 0;
602
603 result->callback_msg = callback_msg;
604 list_add_head( &send_queue->callback_result, &result->sender_entry );
605 }
606 else if (send_queue) list_add_head( &send_queue->send_result, &result->sender_entry );
607
608 if (timeout != TIMEOUT_INFINITE)
609 result->timeout = add_timeout_user( timeout, result_timeout, result );
610 }
611 return result;
612 }
613
614 /* receive a message, removing it from the sent queue */
615 static void receive_message( struct msg_queue *queue, struct message *msg,
616 struct get_message_reply *reply )
617 {
618 struct message_result *result = msg->result;
619
620 reply->total = msg->data_size;
621 if (msg->data_size > get_reply_max_size())
622 {
623 set_error( STATUS_BUFFER_OVERFLOW );
624 return;
625 }
626 reply->type = msg->type;
627 reply->win = msg->win;
628 reply->msg = msg->msg;
629 reply->wparam = msg->wparam;
630 reply->lparam = msg->lparam;
631 reply->time = msg->time;
632
633 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
634
635 list_remove( &msg->entry );
636 /* put the result on the receiver result stack */
637 if (result)
638 {
639 result->msg = NULL;
640 result->recv_next = queue->recv_result;
641 queue->recv_result = result;
642 }
643 free( msg );
644 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
645 }
646
647 /* set the result of the current received message */
648 static void reply_message( struct msg_queue *queue, lparam_t result,
649 unsigned int error, int remove, const void *data, data_size_t len )
650 {
651 struct message_result *res = queue->recv_result;
652
653 if (remove)
654 {
655 queue->recv_result = res->recv_next;
656 res->receiver = NULL;
657 if (!res->sender && !res->hardware_msg) /* no one waiting for it */
658 {
659 free_result( res );
660 return;
661 }
662 }
663 if (!res->replied)
664 {
665 if (len && (res->data = memdup( data, len ))) res->data_size = len;
666 store_message_result( res, result, error );
667 }
668 }
669
670 static int match_window( user_handle_t win, user_handle_t msg_win )
671 {
672 if (!win) return 1;
673 if (win == -1 || win == 1) return !msg_win;
674 if (msg_win == win) return 1;
675 return is_child_window( win, msg_win );
676 }
677
678 /* retrieve a posted message */
679 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
680 unsigned int first, unsigned int last, unsigned int flags,
681 struct get_message_reply *reply )
682 {
683 struct message *msg;
684
685 /* check against the filters */
686 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
687 {
688 if (!match_window( win, msg->win )) continue;
689 if (!check_msg_filter( msg->msg, first, last )) continue;
690 goto found; /* found one */
691 }
692 return 0;
693
694 /* return it to the app */
695 found:
696 reply->total = msg->data_size;
697 if (msg->data_size > get_reply_max_size())
698 {
699 set_error( STATUS_BUFFER_OVERFLOW );
700 return 1;
701 }
702 reply->type = msg->type;
703 reply->win = msg->win;
704 reply->msg = msg->msg;
705 reply->wparam = msg->wparam;
706 reply->lparam = msg->lparam;
707 reply->time = msg->time;
708
709 if (flags & PM_REMOVE)
710 {
711 if (msg->data)
712 {
713 set_reply_data_ptr( msg->data, msg->data_size );
714 msg->data = NULL;
715 msg->data_size = 0;
716 }
717 remove_queue_message( queue, msg, POST_MESSAGE );
718 }
719 else if (msg->data) set_reply_data( msg->data, msg->data_size );
720
721 return 1;
722 }
723
724 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
725 struct get_message_reply *reply )
726 {
727 if (queue->quit_message)
728 {
729 reply->total = 0;
730 reply->type = MSG_POSTED;
731 reply->win = 0;
732 reply->msg = WM_QUIT;
733 reply->wparam = queue->exit_code;
734 reply->lparam = 0;
735 reply->time = get_tick_count();
736
737 if (flags & PM_REMOVE)
738 {
739 queue->quit_message = 0;
740 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
741 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
742 }
743 return 1;
744 }
745 else
746 return 0;
747 }
748
749 /* empty a message list and free all the messages */
750 static void empty_msg_list( struct list *list )
751 {
752 struct list *ptr;
753
754 while ((ptr = list_head( list )) != NULL)
755 {
756 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
757 list_remove( &msg->entry );
758 free_message( msg );
759 }
760 }
761
762 /* cleanup all pending results when deleting a queue */
763 static void cleanup_results( struct msg_queue *queue )
764 {
765 struct list *entry;
766
767 while ((entry = list_head( &queue->send_result )) != NULL)
768 {
769 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
770 }
771
772 while ((entry = list_head( &queue->callback_result )) != NULL)
773 {
774 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
775 }
776
777 while (queue->recv_result)
778 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
779 }
780
781 /* check if the thread owning the queue is hung (not checking for messages) */
782 static int is_queue_hung( struct msg_queue *queue )
783 {
784 struct wait_queue_entry *entry;
785
786 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
787 return 0; /* less than 5 seconds since last get message -> not hung */
788
789 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
790 {
791 if (entry->thread->queue == queue)
792 return 0; /* thread is waiting on queue -> not hung */
793 }
794 return 1;
795 }
796
797 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
798 {
799 struct msg_queue *queue = (struct msg_queue *)obj;
800 struct process *process = entry->thread->process;
801
802 /* a thread can only wait on its own queue */
803 if (entry->thread->queue != queue)
804 {
805 set_error( STATUS_ACCESS_DENIED );
806 return 0;
807 }
808 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
809
810 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
811 set_fd_events( queue->fd, POLLIN );
812 add_queue( obj, entry );
813 return 1;
814 }
815
816 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
817 {
818 struct msg_queue *queue = (struct msg_queue *)obj;
819
820 remove_queue( obj, entry );
821 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
822 set_fd_events( queue->fd, 0 );
823 }
824
825 static void msg_queue_dump( struct object *obj, int verbose )
826 {
827 struct msg_queue *queue = (struct msg_queue *)obj;
828 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
829 queue->wake_bits, queue->wake_mask );
830 }
831
832 static int msg_queue_signaled( struct object *obj, struct thread *thread )
833 {
834 struct msg_queue *queue = (struct msg_queue *)obj;
835 int ret = 0;
836
837 if (queue->fd)
838 {
839 if ((ret = check_fd_events( queue->fd, POLLIN )))
840 /* stop waiting on select() if we are signaled */
841 set_fd_events( queue->fd, 0 );
842 else if (!list_empty( &obj->wait_queue ))
843 /* restart waiting on poll() if we are no longer signaled */
844 set_fd_events( queue->fd, POLLIN );
845 }
846 return ret || is_signaled( queue );
847 }
848
849 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
850 {
851 struct msg_queue *queue = (struct msg_queue *)obj;
852 queue->wake_mask = 0;
853 queue->changed_mask = 0;
854 return 0; /* Not abandoned */
855 }
856
857 static void msg_queue_destroy( struct object *obj )
858 {
859 struct msg_queue *queue = (struct msg_queue *)obj;
860 struct list *ptr;
861 int i;
862
863 cleanup_results( queue );
864 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
865
866 while ((ptr = list_head( &queue->pending_timers )))
867 {
868 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
869 list_remove( &timer->entry );
870 free( timer );
871 }
872 while ((ptr = list_head( &queue->expired_timers )))
873 {
874 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
875 list_remove( &timer->entry );
876 free( timer );
877 }
878 if (queue->timeout) remove_timeout_user( queue->timeout );
879 if (queue->input)
880 {
881 queue->input->cursor_count -= queue->cursor_count;
882 release_object( queue->input );
883 }
884 if (queue->hooks) release_object( queue->hooks );
885 if (queue->fd) release_object( queue->fd );
886 }
887
888 static void msg_queue_poll_event( struct fd *fd, int event )
889 {
890 struct msg_queue *queue = get_fd_user( fd );
891 assert( queue->obj.ops == &msg_queue_ops );
892
893 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
894 else set_fd_events( queue->fd, 0 );
895 wake_up( &queue->obj, 0 );
896 }
897
898 static void thread_input_dump( struct object *obj, int verbose )
899 {
900 struct thread_input *input = (struct thread_input *)obj;
901 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
902 input->focus, input->capture, input->active );
903 }
904
905 static void thread_input_destroy( struct object *obj )
906 {
907 struct thread_input *input = (struct thread_input *)obj;
908
909 empty_msg_list( &input->msg_list );
910 if (input->desktop)
911 {
912 if (input->desktop->foreground_input == input) set_foreground_input( input->desktop, NULL );
913 release_object( input->desktop );
914 }
915 }
916
917 /* fix the thread input data when a window is destroyed */
918 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
919 {
920 struct thread_input *input = queue->input;
921
922 if (window == input->focus) input->focus = 0;
923 if (window == input->capture) input->capture = 0;
924 if (window == input->active) input->active = 0;
925 if (window == input->menu_owner) input->menu_owner = 0;
926 if (window == input->move_size) input->move_size = 0;
927 if (window == input->caret) set_caret_window( input, 0 );
928 }
929
930 /* check if the specified window can be set in the input data of a given queue */
931 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
932 {
933 struct thread *thread;
934 int ret = 0;
935
936 if (!window) return 1; /* we can always clear the data */
937
938 if ((thread = get_window_thread( window )))
939 {
940 ret = (queue->input == thread->queue->input);
941 if (!ret) set_error( STATUS_ACCESS_DENIED );
942 release_object( thread );
943 }
944 else set_error( STATUS_INVALID_HANDLE );
945
946 return ret;
947 }
948
949 /* make sure the specified thread has a queue */
950 int init_thread_queue( struct thread *thread )
951 {
952 if (thread->queue) return 1;
953 return (create_msg_queue( thread, NULL ) != NULL);
954 }
955
956 /* attach two thread input data structures */
957 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
958 {
959 struct desktop *desktop;
960 struct thread_input *input;
961 int ret;
962
963 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
964 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
965 input = (struct thread_input *)grab_object( thread_to->queue->input );
966 if (input->desktop != desktop)
967 {
968 set_error( STATUS_ACCESS_DENIED );
969 release_object( input );
970 release_object( desktop );
971 return 0;
972 }
973 release_object( desktop );
974
975 ret = assign_thread_input( thread_from, input );
976 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
977 release_object( input );
978 return ret;
979 }
980
981 /* detach two thread input data structures */
982 void detach_thread_input( struct thread *thread_from )
983 {
984 struct thread_input *input;
985
986 if ((input = create_thread_input( thread_from )))
987 {
988 assign_thread_input( thread_from, input );
989 release_object( input );
990 }
991 }
992
993
994 /* set the next timer to expire */
995 static void set_next_timer( struct msg_queue *queue )
996 {
997 struct list *ptr;
998
999 if (queue->timeout)
1000 {
1001 remove_timeout_user( queue->timeout );
1002 queue->timeout = NULL;
1003 }
1004 if ((ptr = list_head( &queue->pending_timers )))
1005 {
1006 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1007 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1008 }
1009 /* set/clear QS_TIMER bit */
1010 if (list_empty( &queue->expired_timers ))
1011 clear_queue_bits( queue, QS_TIMER );
1012 else
1013 set_queue_bits( queue, QS_TIMER );
1014 }
1015
1016 /* find a timer from its window and id */
1017 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1018 unsigned int msg, lparam_t id )
1019 {
1020 struct list *ptr;
1021
1022 /* we need to search both lists */
1023
1024 LIST_FOR_EACH( ptr, &queue->pending_timers )
1025 {
1026 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1027 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1028 }
1029 LIST_FOR_EACH( ptr, &queue->expired_timers )
1030 {
1031 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1032 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1033 }
1034 return NULL;
1035 }
1036
1037 /* callback for the next timer expiration */
1038 static void timer_callback( void *private )
1039 {
1040 struct msg_queue *queue = private;
1041 struct list *ptr;
1042
1043 queue->timeout = NULL;
1044 /* move on to the next timer */
1045 ptr = list_head( &queue->pending_timers );
1046 list_remove( ptr );
1047 list_add_tail( &queue->expired_timers, ptr );
1048 set_next_timer( queue );
1049 }
1050
1051 /* link a timer at its rightful place in the queue list */
1052 static void link_timer( struct msg_queue *queue, struct timer *timer )
1053 {
1054 struct list *ptr;
1055
1056 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1057 {
1058 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1059 if (t->when >= timer->when) break;
1060 }
1061 list_add_before( ptr, &timer->entry );
1062 }
1063
1064 /* remove a timer from the queue timer list and free it */
1065 static void free_timer( struct msg_queue *queue, struct timer *timer )
1066 {
1067 list_remove( &timer->entry );
1068 free( timer );
1069 set_next_timer( queue );
1070 }
1071
1072 /* restart an expired timer */
1073 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1074 {
1075 list_remove( &timer->entry );
1076 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1077 link_timer( queue, timer );
1078 set_next_timer( queue );
1079 }
1080
1081 /* find an expired timer matching the filtering parameters */
1082 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1083 unsigned int get_first, unsigned int get_last,
1084 int remove )
1085 {
1086 struct list *ptr;
1087
1088 LIST_FOR_EACH( ptr, &queue->expired_timers )
1089 {
1090 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1091 if (win && timer->win != win) continue;
1092 if (check_msg_filter( timer->msg, get_first, get_last ))
1093 {
1094 if (remove) restart_timer( queue, timer );
1095 return timer;
1096 }
1097 }
1098 return NULL;
1099 }
1100
1101 /* add a timer */
1102 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1103 {
1104 struct timer *timer = mem_alloc( sizeof(*timer) );
1105 if (timer)
1106 {
1107 timer->rate = max( rate, 1 );
1108 timer->when = current_time + (timeout_t)timer->rate * 10000;
1109 link_timer( queue, timer );
1110 /* check if we replaced the next timer */
1111 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1112 }
1113 return timer;
1114 }
1115
1116 /* change the input key state for a given key */
1117 static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
1118 {
1119 if (down)
1120 {
1121 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1122 keystate[key] |= down;
1123 }
1124 else keystate[key] &= ~0x80;
1125 }
1126
1127 /* update the input key state for a keyboard message */
1128 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1129 const struct message *msg )
1130 {
1131 unsigned char key;
1132 int down = 0;
1133
1134 switch (msg->msg)
1135 {
1136 case WM_LBUTTONDOWN:
1137 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1138 /* fall through */
1139 case WM_LBUTTONUP:
1140 set_input_key_state( keystate, VK_LBUTTON, down );
1141 break;
1142 case WM_MBUTTONDOWN:
1143 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1144 /* fall through */
1145 case WM_MBUTTONUP:
1146 set_input_key_state( keystate, VK_MBUTTON, down );
1147 break;
1148 case WM_RBUTTONDOWN:
1149 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1150 /* fall through */
1151 case WM_RBUTTONUP:
1152 set_input_key_state( keystate, VK_RBUTTON, down );
1153 break;
1154 case WM_XBUTTONDOWN:
1155 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1156 /* fall through */
1157 case WM_XBUTTONUP:
1158 if (msg->wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1159 else if (msg->wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1160 break;
1161 case WM_KEYDOWN:
1162 case WM_SYSKEYDOWN:
1163 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1164 /* fall through */
1165 case WM_KEYUP:
1166 case WM_SYSKEYUP:
1167 key = (unsigned char)msg->wparam;
1168 set_input_key_state( keystate, key, down );
1169 switch(key)
1170 {
1171 case VK_LCONTROL:
1172 case VK_RCONTROL:
1173 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1174 set_input_key_state( keystate, VK_CONTROL, down );
1175 break;
1176 case VK_LMENU:
1177 case VK_RMENU:
1178 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1179 set_input_key_state( keystate, VK_MENU, down );
1180 break;
1181 case VK_LSHIFT:
1182 case VK_RSHIFT:
1183 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1184 set_input_key_state( keystate, VK_SHIFT, down );
1185 break;
1186 }
1187 break;
1188 }
1189 }
1190
1191 /* release the hardware message currently being processed by the given thread */
1192 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1193 int remove, user_handle_t new_win )
1194 {
1195 struct thread_input *input = queue->input;
1196 struct message *msg;
1197
1198 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1199 {
1200 if (msg->unique_id == hw_id) break;
1201 }
1202 if (&msg->entry == &input->msg_list) return; /* not found */
1203
1204 /* clear the queue bit for that message */
1205 if (remove || new_win)
1206 {
1207 struct message *other;
1208 int clr_bit;
1209
1210 clr_bit = get_hardware_msg_bit( msg );
1211 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1212 {
1213 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1214 {
1215 clr_bit = 0;
1216 break;
1217 }
1218 }
1219 if (clr_bit) clear_queue_bits( queue, clr_bit );
1220 }
1221
1222 if (new_win) /* set the new window */
1223 {
1224 struct thread *owner = get_window_thread( new_win );
1225 if (owner)
1226 {
1227 msg->win = new_win;
1228 if (owner->queue->input != input)
1229 {
1230 list_remove( &msg->entry );
1231 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1232 {
1233 free_message( msg );
1234 release_object( owner );
1235 return;
1236 }
1237 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1238 }
1239 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1240 remove = 0;
1241 release_object( owner );
1242 }
1243 }
1244 if (remove)
1245 {
1246 update_input_key_state( input->desktop, input->keystate, msg );
1247 list_remove( &msg->entry );
1248 free_message( msg );
1249 }
1250 }
1251
1252 /* find the window that should receive a given hardware message */
1253 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1254 struct message *msg, unsigned int *msg_code )
1255 {
1256 struct hardware_msg_data *data = msg->data;
1257 user_handle_t win = 0;
1258
1259 *msg_code = msg->msg;
1260 if (is_keyboard_msg( msg ))
1261 {
1262 if (input && !(win = input->focus))
1263 {
1264 win = input->active;
1265 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1266 }
1267 }
1268 else /* mouse message */
1269 {
1270 if (!input || !(win = input->capture))
1271 {
1272 if (!(win = msg->win) || !is_window_visible( win ) || is_window_transparent( win ))
1273 win = window_from_point( desktop, data->x, data->y );
1274 }
1275 }
1276 return win;
1277 }
1278
1279 /* set the cursor position, clipping to the cursor clip rect */
1280 static void set_cursor_pos( struct desktop *desktop, int x, int y )
1281 {
1282 desktop->cursor.x = min( max( x, desktop->cursor.clip.left ), desktop->cursor.clip.right - 1 );
1283 desktop->cursor.y = min( max( y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom - 1 );
1284 desktop->cursor.last_change = get_tick_count();
1285 }
1286
1287 /* queue a hardware message into a given thread input */
1288 static void queue_hardware_message( struct desktop *desktop, struct message *msg )
1289 {
1290 user_handle_t win;
1291 struct thread *thread;
1292 struct thread_input *input;
1293 unsigned int msg_code;
1294 struct hardware_msg_data *data = msg->data;
1295
1296 update_input_key_state( desktop, desktop->keystate, msg );
1297 last_input_time = get_tick_count();
1298
1299 if (is_keyboard_msg( msg ))
1300 {
1301 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1302 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1303 msg->lparam &= ~(KF_EXTENDED << 16);
1304 }
1305 else
1306 {
1307 if (msg->msg == WM_MOUSEMOVE) set_cursor_pos( desktop, data->x, data->y );
1308 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1309 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1310 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1311 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1312 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1313 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1314 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1315 }
1316 data->x = desktop->cursor.x;
1317 data->y = desktop->cursor.y;
1318
1319 if (msg->win && (thread = get_window_thread( msg->win )))
1320 {
1321 input = thread->queue->input;
1322 release_object( thread );
1323 }
1324 else input = desktop->foreground_input;
1325
1326 win = find_hardware_message_window( desktop, input, msg, &msg_code );
1327 if (!win || !(thread = get_window_thread(win)))
1328 {
1329 if (input) update_input_key_state( input->desktop, input->keystate, msg );
1330 free( msg );
1331 return;
1332 }
1333 input = thread->queue->input;
1334
1335 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1336 else
1337 {
1338 msg->unique_id = 0; /* will be set once we return it to the app */
1339 list_add_tail( &input->msg_list, &msg->entry );
1340 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1341 }
1342 release_object( thread );
1343 }
1344
1345 /* send the low-level hook message for a given hardware message */
1346 static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
1347 const hw_input_t *input, struct msg_queue *sender )
1348 {
1349 struct thread *hook_thread;
1350 struct msg_queue *queue;
1351 struct message *msg;
1352 timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
1353 int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
1354
1355 if (!(hook_thread = get_first_global_hook( id ))) return 0;
1356 if (!(queue = hook_thread->queue)) return 0;
1357
1358 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1359
1360 msg->type = MSG_HOOK_LL;
1361 msg->win = 0;
1362 msg->msg = id;
1363 msg->wparam = hardware_msg->msg;
1364 msg->time = hardware_msg->time;
1365 msg->data_size = hardware_msg->data_size;
1366 msg->result = NULL;
1367
1368 if (input->type == INPUT_KEYBOARD)
1369 {
1370 unsigned short vkey = input->kbd.vkey;
1371 if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
1372 msg->lparam = (input->kbd.scan << 16) | vkey;
1373 }
1374 else msg->lparam = input->mouse.data << 16;
1375
1376 if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
1377 !(msg->result = alloc_message_result( sender, queue, msg, timeout )))
1378 {
1379 free_message( msg );
1380 return 0;
1381 }
1382 msg->result->hardware_msg = hardware_msg;
1383 msg->result->desktop = (struct desktop *)grab_object( desktop );
1384 list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
1385 set_queue_bits( queue, QS_SENDMESSAGE );
1386 return 1;
1387 }
1388
1389 /* queue a hardware message for a mouse event */
1390 static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1391 unsigned int hook_flags, struct msg_queue *sender )
1392 {
1393 struct hardware_msg_data *msg_data;
1394 struct message *msg;
1395 unsigned int i, time, flags;
1396 int wait = 0, x, y;
1397
1398 static const unsigned int messages[] =
1399 {
1400 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1401 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1402 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1403 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1404 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1405 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1406 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1407 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1408 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1409 0, /* 0x0200 = unused */
1410 0, /* 0x0400 = unused */
1411 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1412 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1413 };
1414
1415 desktop->cursor.last_change = get_tick_count();
1416 flags = input->mouse.flags;
1417 time = input->mouse.time;
1418 if (!time) time = desktop->cursor.last_change;
1419
1420 if (flags & MOUSEEVENTF_MOVE)
1421 {
1422 if (flags & MOUSEEVENTF_ABSOLUTE)
1423 {
1424 x = input->mouse.x;
1425 y = input->mouse.y;
1426 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1427 x == desktop->cursor.x && y == desktop->cursor.y)
1428 flags &= ~MOUSEEVENTF_MOVE;
1429 }
1430 else
1431 {
1432 x = desktop->cursor.x + input->mouse.x;
1433 y = desktop->cursor.y + input->mouse.y;
1434 }
1435 }
1436 else
1437 {
1438 x = desktop->cursor.x;
1439 y = desktop->cursor.y;
1440 }
1441
1442 for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
1443 {
1444 if (!messages[i]) continue;
1445 if (!(flags & (1 << i))) continue;
1446 flags &= ~(1 << i);
1447
1448 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1449 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1450 {
1451 free( msg );
1452 return 0;
1453 }
1454 memset( msg_data, 0, sizeof(*msg_data) );
1455
1456 msg->type = MSG_HARDWARE;
1457 msg->win = get_user_full_handle( win );
1458 msg->msg = messages[i];
1459 msg->wparam = input->mouse.data << 16;
1460 msg->lparam = 0;
1461 msg->time = time;
1462 msg->result = NULL;
1463 msg->data = msg_data;
1464 msg->data_size = sizeof(*msg_data);
1465 msg_data->x = x;
1466 msg_data->y = y;
1467 msg_data->info = input->mouse.info;
1468 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLMHF_INJECTED;
1469
1470 /* specify a sender only when sending the last message */
1471 if (!(flags & ((1 << sizeof(messages)/sizeof(messages[0])) - 1)))
1472 {
1473 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1474 queue_hardware_message( desktop, msg );
1475 }
1476 else if (!send_hook_ll_message( desktop, msg, input, NULL ))
1477 queue_hardware_message( desktop, msg );
1478 }
1479 return wait;
1480 }
1481
1482 /* queue a hardware message for a keyboard event */
1483 static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1484 unsigned int hook_flags, struct msg_queue *sender )
1485 {
1486 struct hardware_msg_data *msg_data;
1487 struct message *msg;
1488 unsigned char vkey = input->kbd.vkey;
1489 int wait;
1490
1491 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1492 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1493 {
1494 free( msg );
1495 return 0;
1496 }
1497 memset( msg_data, 0, sizeof(*msg_data) );
1498
1499 msg->type = MSG_HARDWARE;
1500 msg->win = get_user_full_handle( win );
1501 msg->lparam = (input->kbd.scan << 16) | 1; /* repeat count */
1502 msg->time = input->kbd.time;
1503 msg->result = NULL;
1504 msg->data = msg_data;
1505 msg->data_size = sizeof(*msg_data);
1506 msg_data->info = input->kbd.info;
1507 if (!msg->time) msg->time = get_tick_count();
1508 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLKHF_INJECTED;
1509
1510 if (input->kbd.flags & KEYEVENTF_UNICODE)
1511 {
1512 msg->wparam = VK_PACKET;
1513 }
1514 else
1515 {
1516 unsigned int flags = 0;
1517 switch (vkey)
1518 {
1519 case VK_MENU:
1520 case VK_LMENU:
1521 case VK_RMENU:
1522 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1523 break;
1524 case VK_CONTROL:
1525 case VK_LCONTROL:
1526 case VK_RCONTROL:
1527 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1528 break;
1529 case VK_SHIFT:
1530 case VK_LSHIFT:
1531 case VK_RSHIFT:
1532 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1533 break;
1534 }
1535 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
1536 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1537 if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
1538 else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
1539
1540 msg->wparam = vkey;
1541 msg->lparam |= flags << 16;
1542 msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
1543 }
1544
1545 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1546
1547 switch (vkey)
1548 {
1549 case VK_LMENU:
1550 case VK_RMENU:
1551 if (input->kbd.flags & KEYEVENTF_KEYUP)
1552 {
1553 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1554 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1555 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1556 msg->msg = WM_SYSKEYUP;
1557 desktop->keystate[VK_MENU] &= ~0x02;
1558 }
1559 else
1560 {
1561 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1562 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1563 msg->msg = WM_SYSKEYDOWN;
1564 desktop->keystate[VK_MENU] |= 0x02;
1565 }
1566 break;
1567
1568 case VK_LCONTROL:
1569 case VK_RCONTROL:
1570 /* send WM_SYSKEYUP on release if Alt still pressed */
1571 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1572 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1573 msg->msg = WM_SYSKEYUP;
1574 desktop->keystate[VK_MENU] &= ~0x02;
1575 break;
1576
1577 default:
1578 /* send WM_SYSKEY for Alt-anykey and for F10 */
1579 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1580 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1581 /* fall through */
1582 case VK_F10:
1583 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1584 desktop->keystate[VK_MENU] &= ~0x02;
1585 break;
1586 }
1587 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1588 queue_hardware_message( desktop, msg );
1589
1590 return wait;
1591 }
1592
1593 /* queue a hardware message for a custom type of event */
1594 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
1595 const hw_input_t *input )
1596 {
1597 struct hardware_msg_data *msg_data;
1598 struct message *msg;
1599
1600 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1601 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1602 {
1603 free( msg );
1604 return;
1605 }
1606 memset( msg_data, 0, sizeof(*msg_data) );
1607
1608 msg->type = MSG_HARDWARE;
1609 msg->win = get_user_full_handle( win );
1610 msg->msg = input->hw.msg;
1611 msg->wparam = 0;
1612 msg->lparam = input->hw.lparam;
1613 msg->time = get_tick_count();
1614 msg->result = NULL;
1615 msg->data = msg_data;
1616 msg->data_size = sizeof(*msg_data);
1617
1618 queue_hardware_message( desktop, msg );
1619 }
1620
1621 /* check message filter for a hardware message */
1622 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1623 user_handle_t filter_win, unsigned int first, unsigned int last )
1624 {
1625 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1626 {
1627 /* we can only test the window for a keyboard message since the
1628 * dest window for a mouse message depends on hittest */
1629 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1630 return 0;
1631 /* the message code is final for a keyboard message, we can simply check it */
1632 return check_msg_filter( msg_code, first, last );
1633 }
1634 else /* mouse message */
1635 {
1636 /* we need to check all possible values that the message can have in the end */
1637
1638 if (check_msg_filter( msg_code, first, last )) return 1;
1639 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1640
1641 /* all other messages can become non-client messages */
1642 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1643
1644 /* clicks can become double-clicks or non-client double-clicks */
1645 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1646 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1647 {
1648 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1649 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1650 }
1651 return 0;
1652 }
1653 }
1654
1655
1656 /* find a hardware message for the given queue */
1657 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1658 unsigned int first, unsigned int last, struct get_message_reply *reply )
1659 {
1660 struct thread_input *input = thread->queue->input;
1661 struct thread *win_thread;
1662 struct list *ptr;
1663 user_handle_t win;
1664 int clear_bits, got_one = 0;
1665 unsigned int msg_code;
1666
1667 ptr = list_head( &input->msg_list );
1668 if (hw_id)
1669 {
1670 while (ptr)
1671 {
1672 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1673 if (msg->unique_id == hw_id) break;
1674 ptr = list_next( &input->msg_list, ptr );
1675 }
1676 if (!ptr) ptr = list_head( &input->msg_list );
1677 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1678 }
1679
1680 if (ptr == list_head( &input->msg_list ))
1681 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1682 else
1683 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1684
1685 while (ptr)
1686 {
1687 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1688 struct hardware_msg_data *data = msg->data;
1689
1690 ptr = list_next( &input->msg_list, ptr );
1691 win = find_hardware_message_window( input->desktop, input, msg, &msg_code );
1692 if (!win || !(win_thread = get_window_thread( win )))
1693 {
1694 /* no window at all, remove it */
1695 update_input_key_state( input->desktop, input->keystate, msg );
1696 list_remove( &msg->entry );
1697 free_message( msg );
1698 continue;
1699 }
1700 if (win_thread != thread)
1701 {
1702 if (win_thread->queue->input == input)
1703 {
1704 /* wake the other thread */
1705 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1706 got_one = 1;
1707 }
1708 else
1709 {
1710 /* for another thread input, drop it */
1711 update_input_key_state( input->desktop, input->keystate, msg );
1712 list_remove( &msg->entry );
1713 free_message( msg );
1714 }
1715 release_object( win_thread );
1716 continue;
1717 }
1718 release_object( win_thread );
1719
1720 /* if we already got a message for another thread, or if it doesn't
1721 * match the filter we skip it */
1722 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1723 {
1724 clear_bits &= ~get_hardware_msg_bit( msg );
1725 continue;
1726 }
1727 /* now we can return it */
1728 if (!msg->unique_id) msg->unique_id = get_unique_id();
1729 reply->type = MSG_HARDWARE;
1730 reply->win = win;
1731 reply->msg = msg_code;
1732 reply->wparam = msg->wparam;
1733 reply->lparam = msg->lparam;
1734 reply->time = msg->time;
1735
1736 data->hw_id = msg->unique_id;
1737 set_reply_data( msg->data, msg->data_size );
1738 return 1;
1739 }
1740 /* nothing found, clear the hardware queue bits */
1741 clear_queue_bits( thread->queue, clear_bits );
1742 return 0;
1743 }
1744
1745 /* increment (or decrement if 'incr' is negative) the queue paint count */
1746 void inc_queue_paint_count( struct thread *thread, int incr )
1747 {
1748 struct msg_queue *queue = thread->queue;
1749
1750 assert( queue );
1751
1752 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1753
1754 if (queue->paint_count)
1755 set_queue_bits( queue, QS_PAINT );
1756 else
1757 clear_queue_bits( queue, QS_PAINT );
1758 }
1759
1760
1761 /* remove all messages and timers belonging to a certain window */
1762 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1763 {
1764 struct msg_queue *queue = thread->queue;
1765 struct list *ptr;
1766 int i;
1767
1768 if (!queue) return;
1769
1770 /* remove timers */
1771
1772 ptr = list_head( &queue->pending_timers );
1773 while (ptr)
1774 {
1775 struct list *next = list_next( &queue->pending_timers, ptr );
1776 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1777 if (timer->win == win) free_timer( queue, timer );
1778 ptr = next;
1779 }
1780 ptr = list_head( &queue->expired_timers );
1781 while (ptr)
1782 {
1783 struct list *next = list_next( &queue->expired_timers, ptr );
1784 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1785 if (timer->win == win) free_timer( queue, timer );
1786 ptr = next;
1787 }
1788
1789 /* remove messages */
1790 for (i = 0; i < NB_MSG_KINDS; i++)
1791 {
1792 struct list *ptr, *next;
1793
1794 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1795 {
1796 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1797 if (msg->win == win) remove_queue_message( queue, msg, i );
1798 }
1799 }
1800
1801 thread_input_cleanup_window( queue, win );
1802 }
1803
1804 /* post a message to a window; used by socket handling */
1805 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1806 {
1807 struct message *msg;
1808 struct thread *thread = get_window_thread( win );
1809
1810 if (!thread) return;
1811
1812 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1813 {
1814 msg->type = MSG_POSTED;
1815 msg->win = get_user_full_handle( win );
1816 msg->msg = message;
1817 msg->wparam = wparam;
1818 msg->lparam = lparam;
1819 msg->time = get_tick_count();
1820 msg->result = NULL;
1821 msg->data = NULL;
1822 msg->data_size = 0;
1823
1824 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1825 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1826 }
1827 release_object( thread );
1828 }
1829
1830 /* post a win event */
1831 void post_win_event( struct thread *thread, unsigned int event,
1832 user_handle_t win, unsigned int object_id,
1833 unsigned int child_id, client_ptr_t hook_proc,
1834 const WCHAR *module, data_size_t module_size,
1835 user_handle_t hook)
1836 {
1837 struct message *msg;
1838
1839 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1840 {
1841 struct winevent_msg_data *data;
1842
1843 msg->type = MSG_WINEVENT;
1844 msg->win = get_user_full_handle( win );
1845 msg->msg = event;
1846 msg->wparam = object_id;
1847 msg->lparam = child_id;
1848 msg->time = get_tick_count();
1849 msg->result = NULL;
1850
1851 if ((data = malloc( sizeof(*data) + module_size )))
1852 {
1853 data->hook = hook;
1854 data->tid = get_thread_id( current );
1855 data->hook_proc = hook_proc;
1856 memcpy( data + 1, module, module_size );
1857
1858 msg->data = data;
1859 msg->data_size = sizeof(*data) + module_size;
1860
1861 if (debug_level > 1)
1862 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1863 get_thread_id(thread), event, win, object_id, child_id );
1864 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1865 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1866 }
1867 else
1868 free( msg );
1869 }
1870 }
1871
1872
1873 /* check if the thread owning the window is hung */
1874 DECL_HANDLER(is_window_hung)
1875 {
1876 struct thread *thread;
1877
1878 thread = get_window_thread( req->win );
1879 if (thread)
1880 {
1881 reply->is_hung = is_queue_hung( thread->queue );
1882 release_object( thread );
1883 }
1884 else reply->is_hung = 0;
1885 }
1886
1887
1888 /* get the message queue of the current thread */
1889 DECL_HANDLER(get_msg_queue)
1890 {
1891 struct msg_queue *queue = get_current_queue();
1892
1893 reply->handle = 0;
1894 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1895 }
1896
1897
1898 /* set the file descriptor associated to the current thread queue */
1899 DECL_HANDLER(set_queue_fd)
1900 {
1901 struct msg_queue *queue = get_current_queue();
1902 struct file *file;
1903 int unix_fd;
1904
1905 if (queue->fd) /* fd can only be set once */
1906 {
1907 set_error( STATUS_ACCESS_DENIED );
1908 return;
1909 }
1910 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1911
1912 if ((unix_fd = get_file_unix_fd( file )) != -1)
1913 {
1914 if ((unix_fd = dup( unix_fd )) != -1)
1915 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1916 else
1917 file_set_error();
1918 }
1919 release_object( file );
1920 }
1921
1922
1923 /* set the current message queue wakeup mask */
1924 DECL_HANDLER(set_queue_mask)
1925 {
1926 struct msg_queue *queue = get_current_queue();
1927
1928 if (queue)
1929 {
1930 queue->wake_mask = req->wake_mask;
1931 queue->changed_mask = req->changed_mask;
1932 reply->wake_bits = queue->wake_bits;
1933 reply->changed_bits = queue->changed_bits;
1934 if (is_signaled( queue ))
1935 {
1936 /* if skip wait is set, do what would have been done in the subsequent wait */
1937 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1938 else wake_up( &queue->obj, 0 );
1939 }
1940 }
1941 }
1942
1943
1944 /* get the current message queue status */
1945 DECL_HANDLER(get_queue_status)
1946 {
1947 struct msg_queue *queue = current->queue;
1948 if (queue)
1949 {
1950 reply->wake_bits = queue->wake_bits;
1951 reply->changed_bits = queue->changed_bits;
1952 if (req->clear) queue->changed_bits = 0;
1953 }
1954 else reply->wake_bits = reply->changed_bits = 0;
1955 }
1956
1957
1958 /* send a message to a thread queue */
1959 DECL_HANDLER(send_message)
1960 {
1961 struct message *msg;
1962 struct msg_queue *send_queue = get_current_queue();
1963 struct msg_queue *recv_queue = NULL;
1964 struct thread *thread = NULL;
1965
1966 if (!(thread = get_thread_from_id( req->id ))) return;
1967
1968 if (!(recv_queue = thread->queue))
1969 {
1970 set_error( STATUS_INVALID_PARAMETER );
1971 release_object( thread );
1972 return;
1973 }
1974 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1975 {
1976 set_error( STATUS_TIMEOUT );
1977 release_object( thread );
1978 return;
1979 }
1980
1981 if ((msg = mem_alloc( sizeof(*msg) )))
1982 {
1983 msg->type = req->type;
1984 msg->win = get_user_full_handle( req->win );
1985 msg->msg = req->msg;
1986 msg->wparam = req->wparam;
1987 msg->lparam = req->lparam;
1988 msg->time = get_tick_count();
1989 msg->result = NULL;
1990 msg->data = NULL;
1991 msg->data_size = get_req_data_size();
1992
1993 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1994 {
1995 free( msg );
1996 release_object( thread );
1997 return;
1998 }
1999
2000 switch(msg->type)
2001 {
2002 case MSG_OTHER_PROCESS:
2003 case MSG_ASCII:
2004 case MSG_UNICODE:
2005 case MSG_CALLBACK:
2006 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
2007 {
2008 free_message( msg );
2009 break;
2010 }
2011 /* fall through */
2012 case MSG_NOTIFY:
2013 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
2014 set_queue_bits( recv_queue, QS_SENDMESSAGE );
2015 break;
2016 case MSG_POSTED:
2017 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
2018 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2019 break;
2020 case MSG_HARDWARE: /* should use send_hardware_message instead */
2021 case MSG_CALLBACK_RESULT: /* cannot send this one */
2022 case MSG_HOOK_LL: /* generated internally */
2023 default:
2024 set_error( STATUS_INVALID_PARAMETER );
2025 free( msg );
2026 break;
2027 }
2028 }
2029 release_object( thread );
2030 }
2031
2032 /* send a hardware message to a thread queue */
2033 DECL_HANDLER(send_hardware_message)
2034 {
2035 struct thread *thread = NULL;
2036 struct desktop *desktop;
2037 struct msg_queue *sender = get_current_queue();
2038
2039 if (req->win)
2040 {
2041 if (!(thread = get_window_thread( req->win ))) return;
2042 desktop = (struct desktop *)grab_object( thread->queue->input->desktop );
2043 }
2044 else if (!(desktop = get_thread_desktop( current, 0 ))) return;
2045
2046 switch (req->input.type)
2047 {
2048 case INPUT_MOUSE:
2049 reply->wait = queue_mouse_message( desktop, req->win, &req->input, req->flags, sender );
2050 break;
2051 case INPUT_KEYBOARD:
2052 reply->wait = queue_keyboard_message( desktop, req->win, &req->input, req->flags, sender );
2053 break;
2054 case INPUT_HARDWARE:
2055 queue_custom_hardware_message( desktop, req->win, &req->input );
2056 break;
2057 default:
2058 set_error( STATUS_INVALID_PARAMETER );
2059 }
2060 if (thread) release_object( thread );
2061 release_object( desktop );
2062 }
2063
2064 /* post a quit message to the current queue */
2065 DECL_HANDLER(post_quit_message)
2066 {
2067 struct msg_queue *queue = get_current_queue();
2068
2069 if (!queue)
2070 return;
2071
2072 queue->quit_message = 1;
2073 queue->exit_code = req->exit_code;
2074 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2075 }
2076
2077 /* get a message from the current queue */
2078 DECL_HANDLER(get_message)
2079 {
2080 struct timer *timer;
2081 struct list *ptr;
2082 struct msg_queue *queue = get_current_queue();
2083 user_handle_t get_win = get_user_full_handle( req->get_win );
2084 unsigned int filter = req->flags >> 16;
2085
2086 reply->active_hooks = get_active_hooks();
2087
2088 if (!queue) return;
2089 queue->last_get_msg = current_time;
2090 if (!filter) filter = QS_ALLINPUT;
2091
2092 /* first check for sent messages */
2093 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2094 {
2095 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2096 receive_message( queue, msg, reply );
2097 return;
2098 }
2099
2100 /* clear changed bits so we can wait on them if we don't find a message */
2101 if (filter & QS_POSTMESSAGE)
2102 {
2103 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2104 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2105 }
2106 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2107 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2108
2109 /* then check for posted messages */
2110 if ((filter & QS_POSTMESSAGE) &&
2111 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2112 return;
2113
2114 /* only check for quit messages if not posted messages pending.
2115 * note: the quit message isn't filtered */
2116 if (get_quit_message( queue, req->flags, reply ))
2117 return;
2118
2119 /* then check for any raw hardware message */
2120 if ((filter & QS_INPUT) &&
2121 filter_contains_hw_range( req->get_first, req->get_last ) &&
2122 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
2123 return;
2124
2125 /* now check for WM_PAINT */
2126 if ((filter & QS_PAINT) &&
2127 queue->paint_count &&
2128 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2129 (reply->win = find_window_to_repaint( get_win, current )))
2130 {
2131 reply->type = MSG_POSTED;
2132 reply->msg = WM_PAINT;
2133 reply->wparam = 0;
2134 reply->lparam = 0;
2135 reply->time = get_tick_count();
2136 return;
2137 }
2138
2139 /* now check for timer */
2140 if ((filter & QS_TIMER) &&
2141 (timer = find_expired_timer( queue, get_win, req->get_first,
2142 req->get_last, (req->flags & PM_REMOVE) )))
2143 {
2144 reply->type = MSG_POSTED;
2145 reply->win = timer->win;
2146 reply->msg = timer->msg;
2147 reply->wparam = timer->id;
2148 reply->lparam = timer->lparam;
2149 reply->time = get_tick_count();
2150 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2151 set_event( current->process->idle_event );
2152 return;
2153 }
2154
2155 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2156 queue->wake_mask = req->wake_mask;
2157 queue->changed_mask = req->changed_mask;
2158 set_error( STATUS_PENDING ); /* FIXME */
2159 }
2160
2161
2162 /* reply to a sent message */
2163 DECL_HANDLER(reply_message)
2164 {
2165 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2166 else if (current->queue->recv_result)
2167 reply_message( current->queue, req->result, 0, req->remove,
2168 get_req_data(), get_req_data_size() );
2169 }
2170
2171
2172 /* accept the current hardware message */
2173 DECL_HANDLER(accept_hardware_message)
2174 {
2175 if (current->queue)
2176 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
2177 else
2178 set_error( STATUS_ACCESS_DENIED );
2179 }
2180
2181
2182 /* retrieve the reply for the last message sent */
2183 DECL_HANDLER(get_message_reply)
2184 {
2185 struct message_result *result;
2186 struct list *entry;
2187 struct msg_queue *queue = current->queue;
2188
2189 if (queue)
2190 {
2191 set_error( STATUS_PENDING );
2192 reply->result = 0;
2193
2194 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2195
2196 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2197 if (result->replied || req->cancel)
2198 {
2199 if (result->replied)
2200 {
2201 reply->result = result->result;
2202 set_error( result->error );
2203 if (result->data)
2204 {
2205 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2206 set_reply_data_ptr( result->data, data_len );
2207 result->data = NULL;
2208 result->data_size = 0;
2209 }
2210 }
2211 remove_result_from_sender( result );
2212
2213 entry = list_head( &queue->send_result );
2214 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2215 else
2216 {
2217 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2218 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
2219 }
2220 }
2221 }
2222 else set_error( STATUS_ACCESS_DENIED );
2223 }
2224
2225
2226 /* set a window timer */
2227 DECL_HANDLER(set_win_timer)
2228 {
2229 struct timer *timer;
2230 struct msg_queue *queue;
2231 struct thread *thread = NULL;
2232 user_handle_t win = 0;
2233 lparam_t id = req->id;
2234
2235 if (req->win)
2236 {
2237 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2238 {
2239 set_error( STATUS_INVALID_HANDLE );
2240 return;
2241 }
2242 if (thread->process != current->process)
2243 {
2244 release_object( thread );
2245 set_error( STATUS_ACCESS_DENIED );
2246 return;
2247 }
2248 queue = thread->queue;
2249 /* remove it if it existed already */
2250 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2251 }
2252 else
2253 {
2254 queue = get_current_queue();
2255 /* look for a timer with this id */
2256 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2257 {
2258 /* free and reuse id */
2259 free_timer( queue, timer );
2260 }
2261 else
2262 {
2263 /* find a free id for it */
2264 do
2265 {
2266 id = queue->next_timer_id;
2267 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2268 }
2269 while (find_timer( queue, 0, req->msg, id ));
2270 }
2271 }
2272
2273 if ((timer = set_timer( queue, req->rate )))
2274 {
2275 timer->win = win;
2276 timer->msg = req->msg;
2277 timer->id = id;
2278 timer->lparam = req->lparam;
2279 reply->id = id;
2280 }
2281 if (thread) release_object( thread );
2282 }
2283
2284 /* kill a window timer */
2285 DECL_HANDLER(kill_win_timer)
2286 {
2287 struct timer *timer;
2288 struct thread *thread;
2289 user_handle_t win = 0;
2290
2291 if (req->win)
2292 {
2293 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2294 {
2295 set_error( STATUS_INVALID_HANDLE );
2296 return;
2297 }
2298 if (thread->process != current->process)
2299 {
2300 release_object( thread );
2301 set_error( STATUS_ACCESS_DENIED );
2302 return;
2303 }
2304 }
2305 else thread = (struct thread *)grab_object( current );
2306
2307 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2308 free_timer( thread->queue, timer );
2309 else
2310 set_error( STATUS_INVALID_PARAMETER );
2311
2312 release_object( thread );
2313 }
2314
2315
2316 /* attach (or detach) thread inputs */
2317 DECL_HANDLER(attach_thread_input)
2318 {
2319 struct thread *thread_from = get_thread_from_id( req->tid_from );
2320 struct thread *thread_to = get_thread_from_id( req->tid_to );
2321
2322 if (!thread_from || !thread_to)
2323 {
2324 if (thread_from) release_object( thread_from );
2325 if (thread_to) release_object( thread_to );
2326 return;
2327 }
2328 if (thread_from != thread_to)
2329 {
2330 if (req->attach) attach_thread_input( thread_from, thread_to );
2331 else
2332 {
2333 if (thread_from->queue && thread_to->queue &&
2334 thread_from->queue->input == thread_to->queue->input)
2335 detach_thread_input( thread_from );
2336 else
2337 set_error( STATUS_ACCESS_DENIED );
2338 }
2339 }
2340 else set_error( STATUS_ACCESS_DENIED );
2341 release_object( thread_from );
2342 release_object( thread_to );
2343 }
2344
2345
2346 /* get thread input data */
2347 DECL_HANDLER(get_thread_input)
2348 {
2349 struct thread *thread = NULL;
2350 struct desktop *desktop;
2351 struct thread_input *input;
2352
2353 if (req->tid)
2354 {
2355 if (!(thread = get_thread_from_id( req->tid ))) return;
2356 if (!(desktop = get_thread_desktop( thread, 0 )))
2357 {
2358 release_object( thread );
2359 return;
2360 }
2361 input = thread->queue ? thread->queue->input : NULL;
2362 }
2363 else
2364 {
2365 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2366 input = desktop->foreground_input; /* get the foreground thread info */
2367 }
2368
2369 if (input)
2370 {
2371 reply->focus = input->focus;
2372 reply->capture = input->capture;
2373 reply->active = input->active;
2374 reply->menu_owner = input->menu_owner;
2375 reply->move_size = input->move_size;
2376 reply->caret = input->caret;
2377 reply->cursor = input->cursor;
2378 reply->show_count = input->cursor_count;
2379 reply->rect = input->caret_rect;
2380 }
2381
2382 /* foreground window is active window of foreground thread */
2383 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
2384 if (thread) release_object( thread );
2385 release_object( desktop );
2386 }
2387
2388
2389 /* retrieve queue keyboard state for a given thread */
2390 DECL_HANDLER(get_key_state)
2391 {
2392 struct thread *thread;
2393 struct desktop *desktop;
2394 data_size_t size = min( 256, get_reply_max_size() );
2395
2396 if (!req->tid) /* get global async key state */
2397 {
2398 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2399 if (req->key >= 0)
2400 {
2401 reply->state = desktop->keystate[req->key & 0xff];
2402 desktop->keystate[req->key & 0xff] &= ~0x40;
2403 }
2404 set_reply_data( desktop->keystate, size );
2405 release_object( desktop );
2406 }
2407 else
2408 {
2409 if (!(thread = get_thread_from_id( req->tid ))) return;
2410 if (thread->queue)
2411 {
2412 if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
2413 set_reply_data( thread->queue->input->keystate, size );
2414 }
2415 release_object( thread );
2416 }
2417 }
2418
2419
2420 /* set queue keyboard state for a given thread */
2421 DECL_HANDLER(set_key_state)
2422 {
2423 struct thread *thread;
2424 struct desktop *desktop;
2425 data_size_t size = min( 256, get_req_data_size() );
2426
2427 if (!req->tid) /* set global async key state */
2428 {
2429 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2430 memcpy( desktop->keystate, get_req_data(), size );
2431 release_object( desktop );
2432 }
2433 else
2434 {
2435 if (!(thread = get_thread_from_id( req->tid ))) return;
2436 if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
2437 release_object( thread );
2438 }
2439 }
2440
2441
2442 /* set the system foreground window */
2443 DECL_HANDLER(set_foreground_window)
2444 {
2445 struct thread *thread = NULL;
2446 struct desktop *desktop;
2447 struct msg_queue *queue = get_current_queue();
2448
2449 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2450 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
2451 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
2452 reply->send_msg_new = FALSE;
2453
2454 if (is_top_level_window( req->handle ) &&
2455 ((thread = get_window_thread( req->handle ))) &&
2456 (thread->queue->input->desktop == desktop))
2457 {
2458 set_foreground_input( desktop, thread->queue->input );
2459 reply->send_msg_new = (desktop->foreground_input != queue->input);
2460 }
2461 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2462
2463 if (thread) release_object( thread );
2464 release_object( desktop );
2465 }
2466
2467
2468 /* set the current thread focus window */
2469 DECL_HANDLER(set_focus_window)
2470 {
2471 struct msg_queue *queue = get_current_queue();
2472
2473 reply->previous = 0;
2474 if (queue && check_queue_input_window( queue, req->handle ))
2475 {
2476 reply->previous = queue->input->focus;
2477 queue->input->focus = get_user_full_handle( req->handle );
2478 }
2479 }
2480
2481
2482 /* set the current thread active window */
2483 DECL_HANDLER(set_active_window)
2484 {
2485 struct msg_queue *queue = get_current_queue();
2486
2487 reply->previous = 0;
2488 if (queue && check_queue_input_window( queue, req->handle ))
2489 {
2490 if (!req->handle || make_window_active( req->handle ))
2491 {
2492 reply->previous = queue->input->active;
2493 queue->input->active = get_user_full_handle( req->handle );
2494 }
2495 else set_error( STATUS_INVALID_HANDLE );
2496 }
2497 }
2498
2499
2500 /* set the current thread capture window */
2501 DECL_HANDLER(set_capture_window)
2502 {
2503 struct msg_queue *queue = get_current_queue();
2504
2505 reply->previous = reply->full_handle = 0;
2506 if (queue && check_queue_input_window( queue, req->handle ))
2507 {
2508 struct thread_input *input = queue->input;
2509
2510 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
2511 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
2512 {
2513 set_error(STATUS_ACCESS_DENIED);
2514 return;
2515 }
2516 reply->previous = input->capture;
2517 input->capture = get_user_full_handle( req->handle );
2518 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2519 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2520 reply->full_handle = input->capture;
2521 }
2522 }
2523
2524
2525 /* Set the current thread caret window */
2526 DECL_HANDLER(set_caret_window)
2527 {
2528 struct msg_queue *queue = get_current_queue();
2529
2530 reply->previous = 0;
2531 if (queue && check_queue_input_window( queue, req->handle ))
2532 {
2533 struct thread_input *input = queue->input;
2534
2535 reply->previous = input->caret;
2536 reply->old_rect = input->caret_rect;
2537 reply->old_hide = input->caret_hide;
2538 reply->old_state = input->caret_state;
2539
2540 set_caret_window( input, get_user_full_handle(req->handle) );
2541 input->caret_rect.right = input->caret_rect.left + req->width;
2542 input->caret_rect.bottom = input->caret_rect.top + req->height;
2543 }
2544 }
2545
2546
2547 /* Set the current thread caret information */
2548 DECL_HANDLER(set_caret_info)
2549 {
2550 struct msg_queue *queue = get_current_queue();
2551 struct thread_input *input;
2552
2553 if (!queue) return;
2554 input = queue->input;
2555 reply->full_handle = input->caret;
2556 reply->old_rect = input->caret_rect;
2557 reply->old_hide = input->caret_hide;
2558 reply->old_state = input->caret_state;
2559
2560 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2561 {
2562 set_error( STATUS_ACCESS_DENIED );
2563 return;
2564 }
2565 if (req->flags & SET_CARET_POS)
2566 {
2567 input->caret_rect.right += req->x - input->caret_rect.left;
2568 input->caret_rect.bottom += req->y - input->caret_rect.top;
2569 input->caret_rect.left = req->x;
2570 input->caret_rect.top = req->y;
2571 }
2572 if (req->flags & SET_CARET_HIDE)
2573 {
2574 input->caret_hide += req->hide;
2575 if (input->caret_hide < 0) input->caret_hide = 0;
2576 }
2577 if (req->flags & SET_CARET_STATE)
2578 {
2579 if (req->state == -1) input->caret_state = !input->caret_state;
2580 else input->caret_state = !!req->state;
2581 }
2582 }
2583
2584
2585 /* get the time of the last input event */
2586 DECL_HANDLER(get_last_input_time)
2587 {
2588 reply->time = last_input_time;
2589 }
2590
2591 /* set/get the current cursor */
2592 DECL_HANDLER(set_cursor)
2593 {
2594 struct msg_queue *queue = get_current_queue();
2595 struct thread_input *input;
2596
2597 if (!queue) return;
2598 input = queue->input;
2599
2600 reply->prev_handle = input->cursor;
2601 reply->prev_count = input->cursor_count;
2602
2603 if (req->flags & SET_CURSOR_HANDLE)
2604 {
2605 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
2606 {
2607 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
2608 return;
2609 }
2610 input->cursor = req->handle;
2611 }
2612 if (req->flags & SET_CURSOR_COUNT)
2613 {
2614 queue->cursor_count += req->show_count;
2615 input->cursor_count += req->show_count;
2616 }
2617 if (req->flags & SET_CURSOR_POS)
2618 {
2619 set_cursor_pos( input->desktop, req->x, req->y );
2620 }
2621 if (req->flags & SET_CURSOR_CLIP)
2622 {
2623 rectangle_t top_rect;
2624 get_top_window_rectangle( input->desktop, &top_rect );
2625 if (!intersect_rect( &input->desktop->cursor.clip, &top_rect, &req->clip ))
2626 input->desktop->cursor.clip = top_rect;
2627 }
2628
2629 reply->new_x = input->desktop->cursor.x;
2630 reply->new_y = input->desktop->cursor.y;
2631 reply->new_clip = input->desktop->cursor.clip;
2632 reply->last_change = input->desktop->cursor.last_change;
2633 }
Maarten's multimedia branch