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win32u: Correct GetRawInputBuffer alignment under WoW64.
[wine.git] / server / queue.c
blob07a31b473709946f5afa6ca7f0a59012e2b18a6a
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
23 #include <assert.h>
24 #include <stdarg.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <unistd.h>
28 #include <poll.h>
29
30 #include "ntstatus.h"
31 #define WIN32_NO_STATUS
32 #include "windef.h"
33 #include "winbase.h"
34 #include "wingdi.h"
35 #include "winuser.h"
36 #include "winternl.h"
37
38 #include "handle.h"
39 #include "file.h"
40 #include "thread.h"
41 #include "process.h"
42 #include "request.h"
43 #include "user.h"
44
45 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
46 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
47
48 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
49 #define NB_MSG_KINDS (POST_MESSAGE+1)
50
51
52 struct message_result
53 {
54 struct list sender_entry; /* entry in sender list */
55 struct message *msg; /* message the result is for */
56 struct message_result *recv_next; /* next in receiver list */
57 struct msg_queue *sender; /* sender queue */
58 struct msg_queue *receiver; /* receiver queue */
59 int replied; /* has it been replied to? */
60 unsigned int error; /* error code to pass back to sender */
61 lparam_t result; /* reply result */
62 struct message *hardware_msg; /* hardware message if low-level hook result */
63 struct desktop *desktop; /* desktop for hardware message */
64 struct message *callback_msg; /* message to queue for callback */
65 void *data; /* message reply data */
66 unsigned int data_size; /* size of message reply data */
67 struct timeout_user *timeout; /* result timeout */
68 };
69
70 struct message
71 {
72 struct list entry; /* entry in message list */
73 enum message_type type; /* message type */
74 user_handle_t win; /* window handle */
75 unsigned int msg; /* message code */
76 lparam_t wparam; /* parameters */
77 lparam_t lparam; /* parameters */
78 int x; /* message position */
79 int y;
80 unsigned int time; /* message time */
81 void *data; /* message data for sent messages */
82 unsigned int data_size; /* size of message data */
83 unsigned int unique_id; /* unique id for nested hw message waits */
84 struct message_result *result; /* result in sender queue */
85 };
86
87 struct timer
88 {
89 struct list entry; /* entry in timer list */
90 abstime_t when; /* next expiration */
91 unsigned int rate; /* timer rate in ms */
92 user_handle_t win; /* window handle */
93 unsigned int msg; /* message to post */
94 lparam_t id; /* timer id */
95 lparam_t lparam; /* lparam for message */
96 };
97
98 struct thread_input
99 {
100 struct object obj; /* object header */
101 struct desktop *desktop; /* desktop that this thread input belongs to */
102 user_handle_t focus; /* focus window */
103 user_handle_t capture; /* capture window */
104 user_handle_t active; /* active window */
105 user_handle_t menu_owner; /* current menu owner window */
106 user_handle_t move_size; /* current moving/resizing window */
107 user_handle_t caret; /* caret window */
108 rectangle_t caret_rect; /* caret rectangle */
109 int caret_hide; /* caret hide count */
110 int caret_state; /* caret on/off state */
111 user_handle_t cursor; /* current cursor */
112 int cursor_count; /* cursor show count */
113 struct list msg_list; /* list of hardware messages */
114 unsigned char keystate[256]; /* state of each key */
115 unsigned char desktop_keystate[256]; /* desktop keystate when keystate was synced */
116 int keystate_lock; /* keystate is locked */
117 };
118
119 struct msg_queue
120 {
121 struct object obj; /* object header */
122 struct fd *fd; /* optional file descriptor to poll */
123 unsigned int wake_bits; /* wakeup bits */
124 unsigned int wake_mask; /* wakeup mask */
125 unsigned int changed_bits; /* changed wakeup bits */
126 unsigned int changed_mask; /* changed wakeup mask */
127 int paint_count; /* pending paint messages count */
128 int hotkey_count; /* pending hotkey messages count */
129 int quit_message; /* is there a pending quit message? */
130 int exit_code; /* exit code of pending quit message */
131 int cursor_count; /* per-queue cursor show count */
132 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
133 struct list send_result; /* stack of sent messages waiting for result */
134 struct list callback_result; /* list of callback messages waiting for result */
135 struct message_result *recv_result; /* stack of received messages waiting for result */
136 struct list pending_timers; /* list of pending timers */
137 struct list expired_timers; /* list of expired timers */
138 lparam_t next_timer_id; /* id for the next timer with a 0 window */
139 struct timeout_user *timeout; /* timeout for next timer to expire */
140 struct thread_input *input; /* thread input descriptor */
141 struct hook_table *hooks; /* hook table */
142 timeout_t last_get_msg; /* time of last get message call */
143 int keystate_lock; /* owns an input keystate lock */
144 };
145
146 struct hotkey
147 {
148 struct list entry; /* entry in desktop hotkey list */
149 struct msg_queue *queue; /* queue owning this hotkey */
150 user_handle_t win; /* window handle */
151 int id; /* hotkey id */
152 unsigned int vkey; /* virtual key code */
153 unsigned int flags; /* key modifiers */
154 };
155
156 static void msg_queue_dump( struct object *obj, int verbose );
157 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
158 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
159 static int msg_queue_signaled( struct object *obj, struct wait_queue_entry *entry );
160 static void msg_queue_satisfied( struct object *obj, struct wait_queue_entry *entry );
161 static void msg_queue_destroy( struct object *obj );
162 static void msg_queue_poll_event( struct fd *fd, int event );
163 static void thread_input_dump( struct object *obj, int verbose );
164 static void thread_input_destroy( struct object *obj );
165 static void timer_callback( void *private );
166
167 static const struct object_ops msg_queue_ops =
168 {
169 sizeof(struct msg_queue), /* size */
170 &no_type, /* type */
171 msg_queue_dump, /* dump */
172 msg_queue_add_queue, /* add_queue */
173 msg_queue_remove_queue, /* remove_queue */
174 msg_queue_signaled, /* signaled */
175 msg_queue_satisfied, /* satisfied */
176 no_signal, /* signal */
177 no_get_fd, /* get_fd */
178 default_map_access, /* map_access */
179 default_get_sd, /* get_sd */
180 default_set_sd, /* set_sd */
181 no_get_full_name, /* get_full_name */
182 no_lookup_name, /* lookup_name */
183 no_link_name, /* link_name */
184 NULL, /* unlink_name */
185 no_open_file, /* open_file */
186 no_kernel_obj_list, /* get_kernel_obj_list */
187 no_close_handle, /* close_handle */
188 msg_queue_destroy /* destroy */
189 };
190
191 static const struct fd_ops msg_queue_fd_ops =
192 {
193 NULL, /* get_poll_events */
194 msg_queue_poll_event, /* poll_event */
195 NULL, /* flush */
196 NULL, /* get_fd_type */
197 NULL, /* ioctl */
198 NULL, /* queue_async */
199 NULL, /* reselect_async */
200 NULL /* cancel async */
201 };
202
203
204 static const struct object_ops thread_input_ops =
205 {
206 sizeof(struct thread_input), /* size */
207 &no_type, /* type */
208 thread_input_dump, /* dump */
209 no_add_queue, /* add_queue */
210 NULL, /* remove_queue */
211 NULL, /* signaled */
212 NULL, /* satisfied */
213 no_signal, /* signal */
214 no_get_fd, /* get_fd */
215 default_map_access, /* map_access */
216 default_get_sd, /* get_sd */
217 default_set_sd, /* set_sd */
218 no_get_full_name, /* get_full_name */
219 no_lookup_name, /* lookup_name */
220 no_link_name, /* link_name */
221 NULL, /* unlink_name */
222 no_open_file, /* open_file */
223 no_kernel_obj_list, /* get_kernel_obj_list */
224 no_close_handle, /* close_handle */
225 thread_input_destroy /* destroy */
226 };
227
228 /* pointer to input structure of foreground thread */
229 static unsigned int last_input_time;
230
231 static cursor_pos_t cursor_history[64];
232 static unsigned int cursor_history_latest;
233
234 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue );
235 static void free_message( struct message *msg );
236
237 /* set the caret window in a given thread input */
238 static void set_caret_window( struct thread_input *input, user_handle_t win )
239 {
240 if (!win || win != input->caret)
241 {
242 input->caret_rect.left = 0;
243 input->caret_rect.top = 0;
244 input->caret_rect.right = 0;
245 input->caret_rect.bottom = 0;
246 }
247 input->caret = win;
248 input->caret_hide = 1;
249 input->caret_state = 0;
250 }
251
252 /* create a thread input object */
253 static struct thread_input *create_thread_input( struct thread *thread )
254 {
255 struct thread_input *input;
256
257 if ((input = alloc_object( &thread_input_ops )))
258 {
259 input->focus = 0;
260 input->capture = 0;
261 input->active = 0;
262 input->menu_owner = 0;
263 input->move_size = 0;
264 input->cursor = 0;
265 input->cursor_count = 0;
266 list_init( &input->msg_list );
267 set_caret_window( input, 0 );
268 memset( input->keystate, 0, sizeof(input->keystate) );
269 input->keystate_lock = 0;
270
271 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
272 {
273 release_object( input );
274 return NULL;
275 }
276 memcpy( input->desktop_keystate, input->desktop->keystate, sizeof(input->desktop_keystate) );
277 }
278 return input;
279 }
280
281 /* create a message queue object */
282 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
283 {
284 struct thread_input *new_input = NULL;
285 struct msg_queue *queue;
286 int i;
287
288 if (!input)
289 {
290 if (!(new_input = create_thread_input( thread ))) return NULL;
291 input = new_input;
292 }
293
294 if ((queue = alloc_object( &msg_queue_ops )))
295 {
296 queue->fd = NULL;
297 queue->wake_bits = 0;
298 queue->wake_mask = 0;
299 queue->changed_bits = 0;
300 queue->changed_mask = 0;
301 queue->paint_count = 0;
302 queue->hotkey_count = 0;
303 queue->quit_message = 0;
304 queue->cursor_count = 0;
305 queue->recv_result = NULL;
306 queue->next_timer_id = 0x7fff;
307 queue->timeout = NULL;
308 queue->input = (struct thread_input *)grab_object( input );
309 queue->hooks = NULL;
310 queue->last_get_msg = current_time;
311 queue->keystate_lock = 0;
312 list_init( &queue->send_result );
313 list_init( &queue->callback_result );
314 list_init( &queue->pending_timers );
315 list_init( &queue->expired_timers );
316 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
317
318 thread->queue = queue;
319 }
320 if (new_input) release_object( new_input );
321 return queue;
322 }
323
324 /* free the message queue of a thread at thread exit */
325 void free_msg_queue( struct thread *thread )
326 {
327 remove_thread_hooks( thread );
328 if (!thread->queue) return;
329 release_object( thread->queue );
330 thread->queue = NULL;
331 }
332
333 /* synchronize thread input keystate with the desktop */
334 static void sync_input_keystate( struct thread_input *input )
335 {
336 int i;
337 if (!input->desktop || input->keystate_lock) return;
338 for (i = 0; i < sizeof(input->keystate); ++i)
339 {
340 if (input->desktop_keystate[i] == input->desktop->keystate[i]) continue;
341 input->keystate[i] = input->desktop_keystate[i] = input->desktop->keystate[i];
342 }
343 }
344
345 /* locks thread input keystate to prevent synchronization */
346 static void lock_input_keystate( struct thread_input *input )
347 {
348 input->keystate_lock++;
349 }
350
351 /* unlock the thread input keystate and synchronize it again */
352 static void unlock_input_keystate( struct thread_input *input )
353 {
354 input->keystate_lock--;
355 if (!input->keystate_lock) sync_input_keystate( input );
356 }
357
358 /* change the thread input data of a given thread */
359 static int assign_thread_input( struct thread *thread, struct thread_input *new_input )
360 {
361 struct msg_queue *queue = thread->queue;
362
363 if (!queue)
364 {
365 thread->queue = create_msg_queue( thread, new_input );
366 return thread->queue != NULL;
367 }
368 if (queue->input)
369 {
370 queue->input->cursor_count -= queue->cursor_count;
371 if (queue->keystate_lock) unlock_input_keystate( queue->input );
372 release_object( queue->input );
373 }
374 queue->input = (struct thread_input *)grab_object( new_input );
375 if (queue->keystate_lock) lock_input_keystate( queue->input );
376 new_input->cursor_count += queue->cursor_count;
377 return 1;
378 }
379
380 /* allocate a hardware message and its data */
381 static struct message *alloc_hardware_message( lparam_t info, struct hw_msg_source source,
382 unsigned int time, data_size_t extra_size )
383 {
384 struct hardware_msg_data *msg_data;
385 struct message *msg;
386
387 if (!(msg = mem_alloc( sizeof(*msg) ))) return NULL;
388 if (!(msg_data = mem_alloc( sizeof(*msg_data) + extra_size )))
389 {
390 free( msg );
391 return NULL;
392 }
393 memset( msg, 0, sizeof(*msg) );
394 msg->type = MSG_HARDWARE;
395 msg->time = time;
396 msg->data = msg_data;
397 msg->data_size = sizeof(*msg_data) + extra_size;
398
399 memset( msg_data, 0, sizeof(*msg_data) + extra_size );
400 msg_data->info = info;
401 msg_data->size = msg->data_size;
402 msg_data->source = source;
403 return msg;
404 }
405
406 static int update_desktop_cursor_pos( struct desktop *desktop, int x, int y )
407 {
408 int updated;
409
410 x = max( min( x, desktop->cursor.clip.right - 1 ), desktop->cursor.clip.left );
411 y = max( min( y, desktop->cursor.clip.bottom - 1 ), desktop->cursor.clip.top );
412 updated = (desktop->cursor.x != x || desktop->cursor.y != y);
413 desktop->cursor.x = x;
414 desktop->cursor.y = y;
415 desktop->cursor.last_change = get_tick_count();
416
417 return updated;
418 }
419
420 /* set the cursor position and queue the corresponding mouse message */
421 static void set_cursor_pos( struct desktop *desktop, int x, int y )
422 {
423 static const struct hw_msg_source source = { IMDT_UNAVAILABLE, IMO_SYSTEM };
424 const struct rawinput_device *device;
425 struct message *msg;
426
427 if ((device = current->process->rawinput_mouse) && (device->flags & RIDEV_NOLEGACY))
428 {
429 update_desktop_cursor_pos( desktop, x, y );
430 return;
431 }
432
433 if (!(msg = alloc_hardware_message( 0, source, get_tick_count(), 0 ))) return;
434
435 msg->msg = WM_MOUSEMOVE;
436 msg->x = x;
437 msg->y = y;
438 queue_hardware_message( desktop, msg, 1 );
439 }
440
441 /* retrieve default position and time for synthesized messages */
442 static void get_message_defaults( struct msg_queue *queue, int *x, int *y, unsigned int *time )
443 {
444 struct desktop *desktop = queue->input->desktop;
445
446 *x = desktop->cursor.x;
447 *y = desktop->cursor.y;
448 *time = get_tick_count();
449 }
450
451 /* set the cursor clip rectangle */
452 static void set_clip_rectangle( struct desktop *desktop, const rectangle_t *rect, int send_clip_msg )
453 {
454 rectangle_t top_rect;
455 int x, y;
456
457 get_top_window_rectangle( desktop, &top_rect );
458 if (rect)
459 {
460 rectangle_t new_rect = *rect;
461 if (new_rect.left < top_rect.left) new_rect.left = top_rect.left;
462 if (new_rect.right > top_rect.right) new_rect.right = top_rect.right;
463 if (new_rect.top < top_rect.top) new_rect.top = top_rect.top;
464 if (new_rect.bottom > top_rect.bottom) new_rect.bottom = top_rect.bottom;
465 if (new_rect.left > new_rect.right || new_rect.top > new_rect.bottom) new_rect = top_rect;
466 desktop->cursor.clip = new_rect;
467 }
468 else desktop->cursor.clip = top_rect;
469
470 if (desktop->cursor.clip_msg && send_clip_msg)
471 post_desktop_message( desktop, desktop->cursor.clip_msg, rect != NULL, 0 );
472
473 /* warp the mouse to be inside the clip rect */
474 x = max( min( desktop->cursor.x, desktop->cursor.clip.right - 1 ), desktop->cursor.clip.left );
475 y = max( min( desktop->cursor.y, desktop->cursor.clip.bottom - 1 ), desktop->cursor.clip.top );
476 if (x != desktop->cursor.x || y != desktop->cursor.y) set_cursor_pos( desktop, x, y );
477 }
478
479 /* change the foreground input and reset the cursor clip rect */
480 static void set_foreground_input( struct desktop *desktop, struct thread_input *input )
481 {
482 if (desktop->foreground_input == input) return;
483 set_clip_rectangle( desktop, NULL, 1 );
484 desktop->foreground_input = input;
485 }
486
487 /* get the hook table for a given thread */
488 struct hook_table *get_queue_hooks( struct thread *thread )
489 {
490 if (!thread->queue) return NULL;
491 return thread->queue->hooks;
492 }
493
494 /* set the hook table for a given thread, allocating the queue if needed */
495 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
496 {
497 struct msg_queue *queue = thread->queue;
498 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
499 if (queue->hooks) release_object( queue->hooks );
500 queue->hooks = hooks;
501 }
502
503 /* check the queue status */
504 static inline int is_signaled( struct msg_queue *queue )
505 {
506 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
507 }
508
509 /* set some queue bits */
510 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
511 {
512 if (bits & (QS_KEY | QS_MOUSEBUTTON))
513 {
514 if (!queue->keystate_lock) lock_input_keystate( queue->input );
515 queue->keystate_lock = 1;
516 }
517 queue->wake_bits |= bits;
518 queue->changed_bits |= bits;
519 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
520 }
521
522 /* clear some queue bits */
523 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
524 {
525 queue->wake_bits &= ~bits;
526 queue->changed_bits &= ~bits;
527 if (!(queue->wake_bits & (QS_KEY | QS_MOUSEBUTTON)))
528 {
529 if (queue->keystate_lock) unlock_input_keystate( queue->input );
530 queue->keystate_lock = 0;
531 }
532 }
533
534 /* check whether msg is a keyboard message */
535 static inline int is_keyboard_msg( struct message *msg )
536 {
537 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
538 }
539
540 /* check if message is matched by the filter */
541 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
542 {
543 return (msg >= first && msg <= last);
544 }
545
546 /* check whether a message filter contains at least one potential hardware message */
547 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
548 {
549 /* hardware message ranges are (in numerical order):
550 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
551 * WM_INPUT_DEVICE_CHANGE .. WM_KEYLAST
552 * WM_MOUSEFIRST .. WM_MOUSELAST
553 */
554 if (last < WM_NCMOUSEFIRST) return 0;
555 if (first > WM_NCMOUSELAST && last < WM_INPUT_DEVICE_CHANGE) return 0;
556 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
557 if (first > WM_MOUSELAST) return 0;
558 return 1;
559 }
560
561 /* get the QS_* bit corresponding to a given hardware message */
562 static inline int get_hardware_msg_bit( struct message *msg )
563 {
564 if (msg->msg == WM_INPUT_DEVICE_CHANGE || msg->msg == WM_INPUT) return QS_RAWINPUT;
565 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
566 if (is_keyboard_msg( msg )) return QS_KEY;
567 return QS_MOUSEBUTTON;
568 }
569
570 /* get the current thread queue, creating it if needed */
571 static inline struct msg_queue *get_current_queue(void)
572 {
573 struct msg_queue *queue = current->queue;
574 if (!queue) queue = create_msg_queue( current, NULL );
575 return queue;
576 }
577
578 /* get a (pseudo-)unique id to tag hardware messages */
579 static inline unsigned int get_unique_id(void)
580 {
581 static unsigned int id;
582 if (!++id) id = 1; /* avoid an id of 0 */
583 return id;
584 }
585
586 /* try to merge a message with the last in the list; return 1 if successful */
587 static int merge_message( struct thread_input *input, const struct message *msg )
588 {
589 struct message *prev;
590 struct list *ptr;
591
592 if (msg->msg != WM_MOUSEMOVE) return 0;
593 for (ptr = list_tail( &input->msg_list ); ptr; ptr = list_prev( &input->msg_list, ptr ))
594 {
595 prev = LIST_ENTRY( ptr, struct message, entry );
596 if (prev->msg != WM_INPUT) break;
597 }
598 if (!ptr) return 0;
599 if (prev->result) return 0;
600 if (prev->win && msg->win && prev->win != msg->win) return 0;
601 if (prev->msg != msg->msg) return 0;
602 if (prev->type != msg->type) return 0;
603 /* now we can merge it */
604 prev->wparam = msg->wparam;
605 prev->lparam = msg->lparam;
606 prev->x = msg->x;
607 prev->y = msg->y;
608 prev->time = msg->time;
609 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
610 {
611 struct hardware_msg_data *prev_data = prev->data;
612 struct hardware_msg_data *msg_data = msg->data;
613 prev_data->info = msg_data->info;
614 }
615 list_remove( ptr );
616 list_add_tail( &input->msg_list, ptr );
617 return 1;
618 }
619
620 /* free a result structure */
621 static void free_result( struct message_result *result )
622 {
623 if (result->timeout) remove_timeout_user( result->timeout );
624 free( result->data );
625 if (result->callback_msg) free_message( result->callback_msg );
626 if (result->hardware_msg) free_message( result->hardware_msg );
627 if (result->desktop) release_object( result->desktop );
628 free( result );
629 }
630
631 /* remove the result from the sender list it is on */
632 static inline void remove_result_from_sender( struct message_result *result )
633 {
634 assert( result->sender );
635
636 list_remove( &result->sender_entry );
637 result->sender = NULL;
638 if (!result->receiver) free_result( result );
639 }
640
641 /* store the message result in the appropriate structure */
642 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
643 {
644 res->result = result;
645 res->error = error;
646 res->replied = 1;
647 if (res->timeout)
648 {
649 remove_timeout_user( res->timeout );
650 res->timeout = NULL;
651 }
652
653 if (res->hardware_msg)
654 {
655 if (!error && result) /* rejected by the hook */
656 free_message( res->hardware_msg );
657 else
658 queue_hardware_message( res->desktop, res->hardware_msg, 0 );
659
660 res->hardware_msg = NULL;
661 }
662
663 if (res->sender)
664 {
665 if (res->callback_msg)
666 {
667 /* queue the callback message in the sender queue */
668 struct callback_msg_data *data = res->callback_msg->data;
669 data->result = result;
670 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
671 set_queue_bits( res->sender, QS_SENDMESSAGE );
672 res->callback_msg = NULL;
673 remove_result_from_sender( res );
674 }
675 else
676 {
677 /* wake sender queue if waiting on this result */
678 if (list_head(&res->sender->send_result) == &res->sender_entry)
679 set_queue_bits( res->sender, QS_SMRESULT );
680 }
681 }
682 else if (!res->receiver) free_result( res );
683 }
684
685 /* free a message when deleting a queue or window */
686 static void free_message( struct message *msg )
687 {
688 struct message_result *result = msg->result;
689 if (result)
690 {
691 result->msg = NULL;
692 result->receiver = NULL;
693 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
694 }
695 free( msg->data );
696 free( msg );
697 }
698
699 /* remove (and free) a message from a message list */
700 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
701 enum message_kind kind )
702 {
703 list_remove( &msg->entry );
704 switch(kind)
705 {
706 case SEND_MESSAGE:
707 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
708 break;
709 case POST_MESSAGE:
710 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
711 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
712 if (msg->msg == WM_HOTKEY && --queue->hotkey_count == 0)
713 clear_queue_bits( queue, QS_HOTKEY );
714 break;
715 }
716 free_message( msg );
717 }
718
719 /* message timed out without getting a reply */
720 static void result_timeout( void *private )
721 {
722 struct message_result *result = private;
723
724 assert( !result->replied );
725
726 result->timeout = NULL;
727
728 if (result->msg) /* not received yet */
729 {
730 struct message *msg = result->msg;
731
732 result->msg = NULL;
733 msg->result = NULL;
734 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
735 result->receiver = NULL;
736 }
737 store_message_result( result, 0, STATUS_TIMEOUT );
738 }
739
740 /* allocate and fill a message result structure */
741 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
742 struct msg_queue *recv_queue,
743 struct message *msg, timeout_t timeout )
744 {
745 struct message_result *result = mem_alloc( sizeof(*result) );
746 if (result)
747 {
748 result->msg = msg;
749 result->sender = send_queue;
750 result->receiver = recv_queue;
751 result->replied = 0;
752 result->data = NULL;
753 result->data_size = 0;
754 result->timeout = NULL;
755 result->hardware_msg = NULL;
756 result->desktop = NULL;
757 result->callback_msg = NULL;
758
759 if (msg->type == MSG_CALLBACK)
760 {
761 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
762
763 if (!callback_msg)
764 {
765 free( result );
766 return NULL;
767 }
768 callback_msg->type = MSG_CALLBACK_RESULT;
769 callback_msg->win = msg->win;
770 callback_msg->msg = msg->msg;
771 callback_msg->wparam = 0;
772 callback_msg->lparam = 0;
773 callback_msg->time = get_tick_count();
774 callback_msg->result = NULL;
775 /* steal the data from the original message */
776 callback_msg->data = msg->data;
777 callback_msg->data_size = msg->data_size;
778 msg->data = NULL;
779 msg->data_size = 0;
780
781 result->callback_msg = callback_msg;
782 list_add_head( &send_queue->callback_result, &result->sender_entry );
783 }
784 else if (send_queue)
785 {
786 list_add_head( &send_queue->send_result, &result->sender_entry );
787 clear_queue_bits( send_queue, QS_SMRESULT );
788 }
789
790 if (timeout != TIMEOUT_INFINITE)
791 result->timeout = add_timeout_user( timeout, result_timeout, result );
792 }
793 return result;
794 }
795
796 /* receive a message, removing it from the sent queue */
797 static void receive_message( struct msg_queue *queue, struct message *msg,
798 struct get_message_reply *reply )
799 {
800 struct message_result *result = msg->result;
801
802 reply->total = msg->data_size;
803 if (msg->data_size > get_reply_max_size())
804 {
805 set_error( STATUS_BUFFER_OVERFLOW );
806 return;
807 }
808 reply->type = msg->type;
809 reply->win = msg->win;
810 reply->msg = msg->msg;
811 reply->wparam = msg->wparam;
812 reply->lparam = msg->lparam;
813 reply->x = msg->x;
814 reply->y = msg->y;
815 reply->time = msg->time;
816
817 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
818
819 list_remove( &msg->entry );
820 /* put the result on the receiver result stack */
821 if (result)
822 {
823 result->msg = NULL;
824 result->recv_next = queue->recv_result;
825 queue->recv_result = result;
826 }
827 free( msg );
828 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
829 }
830
831 /* set the result of the current received message */
832 static void reply_message( struct msg_queue *queue, lparam_t result,
833 unsigned int error, int remove, const void *data, data_size_t len )
834 {
835 struct message_result *res = queue->recv_result;
836
837 if (remove)
838 {
839 queue->recv_result = res->recv_next;
840 res->receiver = NULL;
841 if (!res->sender && !res->hardware_msg) /* no one waiting for it */
842 {
843 free_result( res );
844 return;
845 }
846 }
847 if (!res->replied)
848 {
849 if (len && (res->data = memdup( data, len ))) res->data_size = len;
850 store_message_result( res, result, error );
851 }
852 }
853
854 static int match_window( user_handle_t win, user_handle_t msg_win )
855 {
856 if (!win) return 1;
857 if (win == -1 || win == 1) return !msg_win;
858 if (msg_win == win) return 1;
859 return is_child_window( win, msg_win );
860 }
861
862 /* retrieve a posted message */
863 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
864 unsigned int first, unsigned int last, unsigned int flags,
865 struct get_message_reply *reply )
866 {
867 struct message *msg;
868
869 /* check against the filters */
870 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
871 {
872 if (!match_window( win, msg->win )) continue;
873 if (!check_msg_filter( msg->msg, first, last )) continue;
874 goto found; /* found one */
875 }
876 return 0;
877
878 /* return it to the app */
879 found:
880 reply->total = msg->data_size;
881 if (msg->data_size > get_reply_max_size())
882 {
883 set_error( STATUS_BUFFER_OVERFLOW );
884 return 1;
885 }
886 reply->type = msg->type;
887 reply->win = msg->win;
888 reply->msg = msg->msg;
889 reply->wparam = msg->wparam;
890 reply->lparam = msg->lparam;
891 reply->x = msg->x;
892 reply->y = msg->y;
893 reply->time = msg->time;
894
895 if (flags & PM_REMOVE)
896 {
897 if (msg->data)
898 {
899 set_reply_data_ptr( msg->data, msg->data_size );
900 msg->data = NULL;
901 msg->data_size = 0;
902 }
903 remove_queue_message( queue, msg, POST_MESSAGE );
904 }
905 else if (msg->data) set_reply_data( msg->data, msg->data_size );
906
907 return 1;
908 }
909
910 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
911 struct get_message_reply *reply )
912 {
913 if (queue->quit_message)
914 {
915 reply->total = 0;
916 reply->type = MSG_POSTED;
917 reply->win = 0;
918 reply->msg = WM_QUIT;
919 reply->wparam = queue->exit_code;
920 reply->lparam = 0;
921
922 get_message_defaults( queue, &reply->x, &reply->y, &reply->time );
923
924 if (flags & PM_REMOVE)
925 {
926 queue->quit_message = 0;
927 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
928 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
929 }
930 return 1;
931 }
932 else
933 return 0;
934 }
935
936 /* empty a message list and free all the messages */
937 static void empty_msg_list( struct list *list )
938 {
939 struct list *ptr;
940
941 while ((ptr = list_head( list )) != NULL)
942 {
943 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
944 list_remove( &msg->entry );
945 free_message( msg );
946 }
947 }
948
949 /* cleanup all pending results when deleting a queue */
950 static void cleanup_results( struct msg_queue *queue )
951 {
952 struct list *entry;
953
954 while ((entry = list_head( &queue->send_result )) != NULL)
955 {
956 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
957 }
958
959 while ((entry = list_head( &queue->callback_result )) != NULL)
960 {
961 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
962 }
963
964 while (queue->recv_result)
965 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
966 }
967
968 /* check if the thread owning the queue is hung (not checking for messages) */
969 static int is_queue_hung( struct msg_queue *queue )
970 {
971 struct wait_queue_entry *entry;
972
973 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
974 return 0; /* less than 5 seconds since last get message -> not hung */
975
976 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
977 {
978 if (get_wait_queue_thread(entry)->queue == queue)
979 return 0; /* thread is waiting on queue -> not hung */
980 }
981 return 1;
982 }
983
984 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
985 {
986 struct msg_queue *queue = (struct msg_queue *)obj;
987 struct process *process = get_wait_queue_thread(entry)->process;
988
989 /* a thread can only wait on its own queue */
990 if (get_wait_queue_thread(entry)->queue != queue)
991 {
992 set_error( STATUS_ACCESS_DENIED );
993 return 0;
994 }
995 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
996
997 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
998 set_fd_events( queue->fd, POLLIN );
999 add_queue( obj, entry );
1000 return 1;
1001 }
1002
1003 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
1004 {
1005 struct msg_queue *queue = (struct msg_queue *)obj;
1006
1007 remove_queue( obj, entry );
1008 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
1009 set_fd_events( queue->fd, 0 );
1010 }
1011
1012 static void msg_queue_dump( struct object *obj, int verbose )
1013 {
1014 struct msg_queue *queue = (struct msg_queue *)obj;
1015 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
1016 queue->wake_bits, queue->wake_mask );
1017 }
1018
1019 static int msg_queue_signaled( struct object *obj, struct wait_queue_entry *entry )
1020 {
1021 struct msg_queue *queue = (struct msg_queue *)obj;
1022 int ret = 0;
1023
1024 if (queue->fd)
1025 {
1026 if ((ret = check_fd_events( queue->fd, POLLIN )))
1027 /* stop waiting on select() if we are signaled */
1028 set_fd_events( queue->fd, 0 );
1029 else if (!list_empty( &obj->wait_queue ))
1030 /* restart waiting on poll() if we are no longer signaled */
1031 set_fd_events( queue->fd, POLLIN );
1032 }
1033 return ret || is_signaled( queue );
1034 }
1035
1036 static void msg_queue_satisfied( struct object *obj, struct wait_queue_entry *entry )
1037 {
1038 struct msg_queue *queue = (struct msg_queue *)obj;
1039 queue->wake_mask = 0;
1040 queue->changed_mask = 0;
1041 }
1042
1043 static void msg_queue_destroy( struct object *obj )
1044 {
1045 struct msg_queue *queue = (struct msg_queue *)obj;
1046 struct list *ptr;
1047 struct hotkey *hotkey, *hotkey2;
1048 int i;
1049
1050 cleanup_results( queue );
1051 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
1052
1053 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &queue->input->desktop->hotkeys, struct hotkey, entry )
1054 {
1055 if (hotkey->queue == queue)
1056 {
1057 list_remove( &hotkey->entry );
1058 free( hotkey );
1059 }
1060 }
1061
1062 while ((ptr = list_head( &queue->pending_timers )))
1063 {
1064 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1065 list_remove( &timer->entry );
1066 free( timer );
1067 }
1068 while ((ptr = list_head( &queue->expired_timers )))
1069 {
1070 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1071 list_remove( &timer->entry );
1072 free( timer );
1073 }
1074 if (queue->timeout) remove_timeout_user( queue->timeout );
1075 queue->input->cursor_count -= queue->cursor_count;
1076 if (queue->keystate_lock) unlock_input_keystate( queue->input );
1077 release_object( queue->input );
1078 if (queue->hooks) release_object( queue->hooks );
1079 if (queue->fd) release_object( queue->fd );
1080 }
1081
1082 static void msg_queue_poll_event( struct fd *fd, int event )
1083 {
1084 struct msg_queue *queue = get_fd_user( fd );
1085 assert( queue->obj.ops == &msg_queue_ops );
1086
1087 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
1088 else set_fd_events( queue->fd, 0 );
1089 wake_up( &queue->obj, 0 );
1090 }
1091
1092 static void thread_input_dump( struct object *obj, int verbose )
1093 {
1094 struct thread_input *input = (struct thread_input *)obj;
1095 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
1096 input->focus, input->capture, input->active );
1097 }
1098
1099 static void thread_input_destroy( struct object *obj )
1100 {
1101 struct thread_input *input = (struct thread_input *)obj;
1102
1103 empty_msg_list( &input->msg_list );
1104 if (input->desktop)
1105 {
1106 if (input->desktop->foreground_input == input) set_foreground_input( input->desktop, NULL );
1107 release_object( input->desktop );
1108 }
1109 }
1110
1111 /* fix the thread input data when a window is destroyed */
1112 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
1113 {
1114 struct thread_input *input = queue->input;
1115
1116 if (window == input->focus) input->focus = 0;
1117 if (window == input->capture) input->capture = 0;
1118 if (window == input->active) input->active = 0;
1119 if (window == input->menu_owner) input->menu_owner = 0;
1120 if (window == input->move_size) input->move_size = 0;
1121 if (window == input->caret) set_caret_window( input, 0 );
1122 }
1123
1124 /* check if the specified window can be set in the input data of a given queue */
1125 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
1126 {
1127 struct thread *thread;
1128 int ret = 0;
1129
1130 if (!window) return 1; /* we can always clear the data */
1131
1132 if ((thread = get_window_thread( window )))
1133 {
1134 ret = (queue->input == thread->queue->input);
1135 if (!ret) set_error( STATUS_ACCESS_DENIED );
1136 release_object( thread );
1137 }
1138 else set_error( STATUS_INVALID_HANDLE );
1139
1140 return ret;
1141 }
1142
1143 /* make sure the specified thread has a queue */
1144 int init_thread_queue( struct thread *thread )
1145 {
1146 if (thread->queue) return 1;
1147 return (create_msg_queue( thread, NULL ) != NULL);
1148 }
1149
1150 /* attach two thread input data structures */
1151 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
1152 {
1153 struct desktop *desktop;
1154 struct thread_input *input;
1155 int ret;
1156
1157 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
1158 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
1159 input = (struct thread_input *)grab_object( thread_to->queue->input );
1160 if (input->desktop != desktop)
1161 {
1162 set_error( STATUS_ACCESS_DENIED );
1163 release_object( input );
1164 release_object( desktop );
1165 return 0;
1166 }
1167 release_object( desktop );
1168
1169 if (thread_from->queue)
1170 {
1171 if (!input->focus) input->focus = thread_from->queue->input->focus;
1172 if (!input->active) input->active = thread_from->queue->input->active;
1173 }
1174
1175 ret = assign_thread_input( thread_from, input );
1176 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
1177 release_object( input );
1178 return ret;
1179 }
1180
1181 /* detach two thread input data structures */
1182 void detach_thread_input( struct thread *thread_from )
1183 {
1184 struct thread *thread;
1185 struct thread_input *input, *old_input = thread_from->queue->input;
1186
1187 if ((input = create_thread_input( thread_from )))
1188 {
1189 if (old_input->focus && (thread = get_window_thread( old_input->focus )))
1190 {
1191 if (thread == thread_from)
1192 {
1193 input->focus = old_input->focus;
1194 old_input->focus = 0;
1195 }
1196 release_object( thread );
1197 }
1198 if (old_input->active && (thread = get_window_thread( old_input->active )))
1199 {
1200 if (thread == thread_from)
1201 {
1202 input->active = old_input->active;
1203 old_input->active = 0;
1204 }
1205 release_object( thread );
1206 }
1207 assign_thread_input( thread_from, input );
1208 release_object( input );
1209 }
1210 }
1211
1212
1213 /* set the next timer to expire */
1214 static void set_next_timer( struct msg_queue *queue )
1215 {
1216 struct list *ptr;
1217
1218 if (queue->timeout)
1219 {
1220 remove_timeout_user( queue->timeout );
1221 queue->timeout = NULL;
1222 }
1223 if ((ptr = list_head( &queue->pending_timers )))
1224 {
1225 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1226 queue->timeout = add_timeout_user( abstime_to_timeout(timer->when), timer_callback, queue );
1227 }
1228 /* set/clear QS_TIMER bit */
1229 if (list_empty( &queue->expired_timers ))
1230 clear_queue_bits( queue, QS_TIMER );
1231 else
1232 set_queue_bits( queue, QS_TIMER );
1233 }
1234
1235 /* find a timer from its window and id */
1236 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1237 unsigned int msg, lparam_t id )
1238 {
1239 struct list *ptr;
1240
1241 /* we need to search both lists */
1242
1243 LIST_FOR_EACH( ptr, &queue->pending_timers )
1244 {
1245 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1246 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1247 }
1248 LIST_FOR_EACH( ptr, &queue->expired_timers )
1249 {
1250 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1251 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1252 }
1253 return NULL;
1254 }
1255
1256 /* callback for the next timer expiration */
1257 static void timer_callback( void *private )
1258 {
1259 struct msg_queue *queue = private;
1260 struct list *ptr;
1261
1262 queue->timeout = NULL;
1263 /* move on to the next timer */
1264 ptr = list_head( &queue->pending_timers );
1265 list_remove( ptr );
1266 list_add_tail( &queue->expired_timers, ptr );
1267 set_next_timer( queue );
1268 }
1269
1270 /* link a timer at its rightful place in the queue list */
1271 static void link_timer( struct msg_queue *queue, struct timer *timer )
1272 {
1273 struct list *ptr;
1274
1275 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1276 {
1277 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1278 if (t->when <= timer->when) break;
1279 }
1280 list_add_before( ptr, &timer->entry );
1281 }
1282
1283 /* remove a timer from the queue timer list and free it */
1284 static void free_timer( struct msg_queue *queue, struct timer *timer )
1285 {
1286 list_remove( &timer->entry );
1287 free( timer );
1288 set_next_timer( queue );
1289 }
1290
1291 /* restart an expired timer */
1292 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1293 {
1294 list_remove( &timer->entry );
1295 while (-timer->when <= monotonic_time) timer->when -= (timeout_t)timer->rate * 10000;
1296 link_timer( queue, timer );
1297 set_next_timer( queue );
1298 }
1299
1300 /* find an expired timer matching the filtering parameters */
1301 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1302 unsigned int get_first, unsigned int get_last,
1303 int remove )
1304 {
1305 struct list *ptr;
1306
1307 LIST_FOR_EACH( ptr, &queue->expired_timers )
1308 {
1309 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1310 if (win && timer->win != win) continue;
1311 if (check_msg_filter( timer->msg, get_first, get_last ))
1312 {
1313 if (remove) restart_timer( queue, timer );
1314 return timer;
1315 }
1316 }
1317 return NULL;
1318 }
1319
1320 /* add a timer */
1321 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1322 {
1323 struct timer *timer = mem_alloc( sizeof(*timer) );
1324 if (timer)
1325 {
1326 timer->rate = max( rate, 1 );
1327 timer->when = -monotonic_time - (timeout_t)timer->rate * 10000;
1328 link_timer( queue, timer );
1329 /* check if we replaced the next timer */
1330 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1331 }
1332 return timer;
1333 }
1334
1335 /* change the input key state for a given key */
1336 static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
1337 {
1338 if (down)
1339 {
1340 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1341 keystate[key] |= down;
1342 }
1343 else keystate[key] &= ~0x80;
1344 }
1345
1346 /* update the input key state for a keyboard message */
1347 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1348 unsigned int msg, lparam_t wparam )
1349 {
1350 unsigned char key;
1351 int down = 0;
1352
1353 switch (msg)
1354 {
1355 case WM_LBUTTONDOWN:
1356 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1357 /* fall through */
1358 case WM_LBUTTONUP:
1359 set_input_key_state( keystate, VK_LBUTTON, down );
1360 break;
1361 case WM_MBUTTONDOWN:
1362 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1363 /* fall through */
1364 case WM_MBUTTONUP:
1365 set_input_key_state( keystate, VK_MBUTTON, down );
1366 break;
1367 case WM_RBUTTONDOWN:
1368 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1369 /* fall through */
1370 case WM_RBUTTONUP:
1371 set_input_key_state( keystate, VK_RBUTTON, down );
1372 break;
1373 case WM_XBUTTONDOWN:
1374 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1375 /* fall through */
1376 case WM_XBUTTONUP:
1377 if (wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1378 else if (wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1379 break;
1380 case WM_KEYDOWN:
1381 case WM_SYSKEYDOWN:
1382 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1383 /* fall through */
1384 case WM_KEYUP:
1385 case WM_SYSKEYUP:
1386 key = (unsigned char)wparam;
1387 set_input_key_state( keystate, key, down );
1388 switch(key)
1389 {
1390 case VK_LCONTROL:
1391 case VK_RCONTROL:
1392 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1393 set_input_key_state( keystate, VK_CONTROL, down );
1394 break;
1395 case VK_LMENU:
1396 case VK_RMENU:
1397 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1398 set_input_key_state( keystate, VK_MENU, down );
1399 break;
1400 case VK_LSHIFT:
1401 case VK_RSHIFT:
1402 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1403 set_input_key_state( keystate, VK_SHIFT, down );
1404 break;
1405 }
1406 break;
1407 }
1408 }
1409
1410 /* update the desktop key state according to a mouse message flags */
1411 static void update_desktop_mouse_state( struct desktop *desktop, unsigned int flags,
1412 int x, int y, lparam_t wparam )
1413 {
1414 if (flags & MOUSEEVENTF_MOVE)
1415 update_desktop_cursor_pos( desktop, x, y );
1416 if (flags & MOUSEEVENTF_LEFTDOWN)
1417 update_input_key_state( desktop, desktop->keystate, WM_LBUTTONDOWN, wparam );
1418 if (flags & MOUSEEVENTF_LEFTUP)
1419 update_input_key_state( desktop, desktop->keystate, WM_LBUTTONUP, wparam );
1420 if (flags & MOUSEEVENTF_RIGHTDOWN)
1421 update_input_key_state( desktop, desktop->keystate, WM_RBUTTONDOWN, wparam );
1422 if (flags & MOUSEEVENTF_RIGHTUP)
1423 update_input_key_state( desktop, desktop->keystate, WM_RBUTTONUP, wparam );
1424 if (flags & MOUSEEVENTF_MIDDLEDOWN)
1425 update_input_key_state( desktop, desktop->keystate, WM_MBUTTONDOWN, wparam );
1426 if (flags & MOUSEEVENTF_MIDDLEUP)
1427 update_input_key_state( desktop, desktop->keystate, WM_MBUTTONUP, wparam );
1428 if (flags & MOUSEEVENTF_XDOWN)
1429 update_input_key_state( desktop, desktop->keystate, WM_XBUTTONDOWN, wparam );
1430 if (flags & MOUSEEVENTF_XUP)
1431 update_input_key_state( desktop, desktop->keystate, WM_XBUTTONUP, wparam );
1432 }
1433
1434 /* release the hardware message currently being processed by the given thread */
1435 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id )
1436 {
1437 struct thread_input *input = queue->input;
1438 struct message *msg, *other;
1439 int clr_bit;
1440
1441 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1442 {
1443 if (msg->unique_id == hw_id) break;
1444 }
1445 if (&msg->entry == &input->msg_list) return; /* not found */
1446
1447 /* clear the queue bit for that message */
1448 clr_bit = get_hardware_msg_bit( msg );
1449 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1450 {
1451 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1452 {
1453 clr_bit = 0;
1454 break;
1455 }
1456 }
1457 if (clr_bit) clear_queue_bits( queue, clr_bit );
1458
1459 update_input_key_state( input->desktop, input->keystate, msg->msg, msg->wparam );
1460 list_remove( &msg->entry );
1461 free_message( msg );
1462 }
1463
1464 static int queue_hotkey_message( struct desktop *desktop, struct message *msg )
1465 {
1466 struct hotkey *hotkey;
1467 unsigned int modifiers = 0;
1468
1469 if (msg->msg != WM_KEYDOWN && msg->msg != WM_SYSKEYDOWN) return 0;
1470
1471 if (desktop->keystate[VK_MENU] & 0x80) modifiers |= MOD_ALT;
1472 if (desktop->keystate[VK_CONTROL] & 0x80) modifiers |= MOD_CONTROL;
1473 if (desktop->keystate[VK_SHIFT] & 0x80) modifiers |= MOD_SHIFT;
1474 if ((desktop->keystate[VK_LWIN] & 0x80) || (desktop->keystate[VK_RWIN] & 0x80)) modifiers |= MOD_WIN;
1475
1476 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
1477 {
1478 if (hotkey->vkey != msg->wparam) continue;
1479 if ((hotkey->flags & (MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN)) == modifiers) goto found;
1480 }
1481
1482 return 0;
1483
1484 found:
1485 msg->type = MSG_POSTED;
1486 msg->win = hotkey->win;
1487 msg->msg = WM_HOTKEY;
1488 msg->wparam = hotkey->id;
1489 msg->lparam = ((hotkey->vkey & 0xffff) << 16) | modifiers;
1490
1491 free( msg->data );
1492 msg->data = NULL;
1493 msg->data_size = 0;
1494
1495 list_add_tail( &hotkey->queue->msg_list[POST_MESSAGE], &msg->entry );
1496 set_queue_bits( hotkey->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE|QS_HOTKEY );
1497 hotkey->queue->hotkey_count++;
1498 return 1;
1499 }
1500
1501 /* find the window that should receive a given hardware message */
1502 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1503 struct message *msg, unsigned int *msg_code,
1504 struct thread **thread )
1505 {
1506 user_handle_t win = 0;
1507
1508 *thread = NULL;
1509 *msg_code = msg->msg;
1510 if (msg->msg == WM_INPUT || msg->msg == WM_INPUT_DEVICE_CHANGE)
1511 {
1512 if (!(win = msg->win) && input) win = input->focus;
1513 }
1514 else if (is_keyboard_msg( msg ))
1515 {
1516 if (input && !(win = input->focus))
1517 {
1518 win = input->active;
1519 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1520 }
1521 }
1522 else if (!input || !(win = input->capture)) /* mouse message */
1523 {
1524 if (is_window_visible( msg->win ) && !is_window_transparent( msg->win )) win = msg->win;
1525 else win = shallow_window_from_point( desktop, msg->x, msg->y );
1526
1527 *thread = window_thread_from_point( win, msg->x, msg->y );
1528 }
1529
1530 if (!*thread)
1531 *thread = get_window_thread( win );
1532 return win;
1533 }
1534
1535 static struct rawinput_device *find_rawinput_device( struct process *process, unsigned short usage_page, unsigned short usage )
1536 {
1537 struct rawinput_device *device, *end;
1538
1539 for (device = process->rawinput_devices, end = device + process->rawinput_device_count; device != end; device++)
1540 {
1541 if (device->usage_page != usage_page || device->usage != usage) continue;
1542 return device;
1543 }
1544
1545 return NULL;
1546 }
1547
1548 static void prepend_cursor_history( int x, int y, unsigned int time, lparam_t info )
1549 {
1550 cursor_pos_t *pos = &cursor_history[--cursor_history_latest % ARRAY_SIZE(cursor_history)];
1551
1552 pos->x = x;
1553 pos->y = y;
1554 pos->time = time;
1555 pos->info = info;
1556 }
1557
1558 /* queue a hardware message into a given thread input */
1559 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue )
1560 {
1561 user_handle_t win;
1562 struct thread *thread;
1563 struct thread_input *input;
1564 struct hardware_msg_data *msg_data = msg->data;
1565 unsigned int msg_code;
1566
1567 update_input_key_state( desktop, desktop->keystate, msg->msg, msg->wparam );
1568 last_input_time = get_tick_count();
1569 if (msg->msg != WM_MOUSEMOVE) always_queue = 1;
1570
1571 if (is_keyboard_msg( msg ))
1572 {
1573 if (queue_hotkey_message( desktop, msg )) return;
1574 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1575 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1576 msg->lparam &= ~(KF_EXTENDED << 16);
1577 }
1578 else if (msg->msg != WM_INPUT && msg->msg != WM_INPUT_DEVICE_CHANGE)
1579 {
1580 if (msg->msg == WM_MOUSEMOVE)
1581 {
1582 prepend_cursor_history( msg->x, msg->y, msg->time, msg_data->info );
1583 if (update_desktop_cursor_pos( desktop, msg->x, msg->y )) always_queue = 1;
1584 }
1585 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1586 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1587 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1588 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1589 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1590 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1591 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1592 }
1593 msg->x = desktop->cursor.x;
1594 msg->y = desktop->cursor.y;
1595
1596 if (msg->win && (thread = get_window_thread( msg->win )))
1597 {
1598 input = thread->queue->input;
1599 release_object( thread );
1600 }
1601 else input = desktop->foreground_input;
1602
1603 win = find_hardware_message_window( desktop, input, msg, &msg_code, &thread );
1604 if (!win || !thread)
1605 {
1606 if (input) update_input_key_state( input->desktop, input->keystate, msg->msg, msg->wparam );
1607 free_message( msg );
1608 return;
1609 }
1610 input = thread->queue->input;
1611
1612 if (win != desktop->cursor.win) always_queue = 1;
1613 desktop->cursor.win = win;
1614
1615 if (!always_queue || merge_message( input, msg )) free_message( msg );
1616 else
1617 {
1618 msg->unique_id = 0; /* will be set once we return it to the app */
1619 list_add_tail( &input->msg_list, &msg->entry );
1620 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1621 }
1622 release_object( thread );
1623 }
1624
1625 /* send the low-level hook message for a given hardware message */
1626 static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
1627 const hw_input_t *input, struct msg_queue *sender )
1628 {
1629 struct thread *hook_thread;
1630 struct msg_queue *queue;
1631 struct message *msg;
1632 timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
1633 int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
1634
1635 if (!(hook_thread = get_first_global_hook( id ))) return 0;
1636 if (!(queue = hook_thread->queue)) return 0;
1637 if (is_queue_hung( queue )) return 0;
1638
1639 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1640
1641 msg->type = MSG_HOOK_LL;
1642 msg->win = 0;
1643 msg->msg = id;
1644 msg->wparam = hardware_msg->msg;
1645 msg->x = hardware_msg->x;
1646 msg->y = hardware_msg->y;
1647 msg->time = hardware_msg->time;
1648 msg->data_size = hardware_msg->data_size;
1649 msg->result = NULL;
1650
1651 if (input->type == INPUT_KEYBOARD)
1652 {
1653 unsigned short vkey = input->kbd.vkey;
1654 if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
1655 msg->lparam = (input->kbd.scan << 16) | vkey;
1656 }
1657 else msg->lparam = input->mouse.data << 16;
1658
1659 if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
1660 !(msg->result = alloc_message_result( sender, queue, msg, timeout )))
1661 {
1662 free_message( msg );
1663 return 0;
1664 }
1665 msg->result->hardware_msg = hardware_msg;
1666 msg->result->desktop = (struct desktop *)grab_object( desktop );
1667 list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
1668 set_queue_bits( queue, QS_SENDMESSAGE );
1669 return 1;
1670 }
1671
1672 /* get the foreground thread for a desktop and a window receiving input */
1673 static struct thread *get_foreground_thread( struct desktop *desktop, user_handle_t window )
1674 {
1675 /* if desktop has no foreground process, assume the receiving window is */
1676 if (desktop->foreground_input) return get_window_thread( desktop->foreground_input->focus );
1677 if (window) return get_window_thread( window );
1678 return NULL;
1679 }
1680
1681 struct rawinput_message
1682 {
1683 struct thread *foreground;
1684 struct desktop *desktop;
1685 struct hw_msg_source source;
1686 unsigned int time;
1687 unsigned int message;
1688 struct hardware_msg_data data;
1689 const void *hid_report;
1690 };
1691
1692 /* check if process is supposed to receive a WM_INPUT message and eventually queue it */
1693 static int queue_rawinput_message( struct process* process, void *arg )
1694 {
1695 const struct rawinput_message* raw_msg = arg;
1696 const struct rawinput_device *device = NULL;
1697 struct desktop *target_desktop = NULL, *desktop = NULL;
1698 struct thread *target_thread = NULL, *foreground = NULL;
1699 struct message *msg;
1700 data_size_t report_size;
1701 int wparam = RIM_INPUT;
1702
1703 if (raw_msg->data.rawinput.type == RIM_TYPEMOUSE)
1704 device = process->rawinput_mouse;
1705 else if (raw_msg->data.rawinput.type == RIM_TYPEKEYBOARD)
1706 device = process->rawinput_kbd;
1707 else
1708 device = find_rawinput_device( process, raw_msg->data.rawinput.hid.usage_page, raw_msg->data.rawinput.hid.usage );
1709 if (!device) return 0;
1710
1711 if (raw_msg->message == WM_INPUT_DEVICE_CHANGE && !(device->flags & RIDEV_DEVNOTIFY)) return 0;
1712
1713 if (raw_msg->desktop) desktop = (struct desktop *)grab_object( raw_msg->desktop );
1714 else if (!(desktop = get_desktop_obj( process, process->desktop, 0 ))) goto done;
1715
1716 if (raw_msg->foreground) foreground = (struct thread *)grab_object( raw_msg->foreground );
1717 else if (!(foreground = get_foreground_thread( desktop, 0 ))) goto done;
1718
1719 if (process != foreground->process)
1720 {
1721 if (raw_msg->message == WM_INPUT && !(device->flags & RIDEV_INPUTSINK)) goto done;
1722 if (!(target_thread = get_window_thread( device->target ))) goto done;
1723 if (!(target_desktop = get_thread_desktop( target_thread, 0 ))) goto done;
1724 if (target_desktop != desktop) goto done;
1725 wparam = RIM_INPUTSINK;
1726 }
1727
1728 if (raw_msg->data.rawinput.type != RIM_TYPEHID || !raw_msg->hid_report) report_size = 0;
1729 else report_size = raw_msg->data.size - sizeof(raw_msg->data);
1730
1731 if (!(msg = alloc_hardware_message( raw_msg->data.info, raw_msg->source, raw_msg->time, report_size )))
1732 goto done;
1733
1734 msg->win = device->target;
1735 msg->msg = raw_msg->message;
1736 msg->wparam = wparam;
1737 msg->lparam = 0;
1738 memcpy( msg->data, &raw_msg->data, sizeof(raw_msg->data) );
1739 if (report_size) memcpy( (struct hardware_msg_data *)msg->data + 1, raw_msg->hid_report, report_size );
1740
1741 if (raw_msg->message == WM_INPUT_DEVICE_CHANGE && raw_msg->data.rawinput.type == RIM_TYPEHID)
1742 {
1743 msg->wparam = raw_msg->data.rawinput.hid.param;
1744 msg->lparam = raw_msg->data.rawinput.hid.device;
1745 }
1746
1747 queue_hardware_message( desktop, msg, 1 );
1748
1749 done:
1750 if (target_thread) release_object( target_thread );
1751 if (target_desktop) release_object( target_desktop );
1752 if (foreground) release_object( foreground );
1753 if (desktop) release_object( desktop );
1754 return 0;
1755 }
1756
1757 /* queue a hardware message for a mouse event */
1758 static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1759 unsigned int origin, struct msg_queue *sender )
1760 {
1761 const struct rawinput_device *device;
1762 struct hardware_msg_data *msg_data;
1763 struct rawinput_message raw_msg;
1764 struct message *msg;
1765 struct thread *foreground;
1766 unsigned int i, time, flags;
1767 struct hw_msg_source source = { IMDT_MOUSE, origin };
1768 int wait = 0, x, y;
1769
1770 static const unsigned int messages[] =
1771 {
1772 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1773 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1774 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1775 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1776 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1777 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1778 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1779 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1780 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1781 0, /* 0x0200 = unused */
1782 0, /* 0x0400 = unused */
1783 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1784 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1785 };
1786
1787 desktop->cursor.last_change = get_tick_count();
1788 flags = input->mouse.flags;
1789 time = input->mouse.time;
1790 if (!time) time = desktop->cursor.last_change;
1791
1792 if (flags & MOUSEEVENTF_MOVE)
1793 {
1794 if (flags & MOUSEEVENTF_ABSOLUTE)
1795 {
1796 x = input->mouse.x;
1797 y = input->mouse.y;
1798 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1799 x == desktop->cursor.x && y == desktop->cursor.y)
1800 flags &= ~MOUSEEVENTF_MOVE;
1801 }
1802 else
1803 {
1804 x = desktop->cursor.x + input->mouse.x;
1805 y = desktop->cursor.y + input->mouse.y;
1806 }
1807 }
1808 else
1809 {
1810 x = desktop->cursor.x;
1811 y = desktop->cursor.y;
1812 }
1813
1814 if ((foreground = get_foreground_thread( desktop, win )))
1815 {
1816 memset( &raw_msg, 0, sizeof(raw_msg) );
1817 raw_msg.foreground = foreground;
1818 raw_msg.desktop = desktop;
1819 raw_msg.source = source;
1820 raw_msg.time = time;
1821 raw_msg.message = WM_INPUT;
1822
1823 msg_data = &raw_msg.data;
1824 msg_data->info = input->mouse.info;
1825 msg_data->size = sizeof(*msg_data);
1826 msg_data->flags = flags;
1827 msg_data->rawinput.type = RIM_TYPEMOUSE;
1828 msg_data->rawinput.mouse.x = x - desktop->cursor.x;
1829 msg_data->rawinput.mouse.y = y - desktop->cursor.y;
1830 msg_data->rawinput.mouse.data = input->mouse.data;
1831
1832 enum_processes( queue_rawinput_message, &raw_msg );
1833 release_object( foreground );
1834 }
1835
1836 if ((device = current->process->rawinput_mouse) && (device->flags & RIDEV_NOLEGACY))
1837 {
1838 update_desktop_mouse_state( desktop, flags, x, y, input->mouse.data << 16 );
1839 return 0;
1840 }
1841
1842 for (i = 0; i < ARRAY_SIZE( messages ); i++)
1843 {
1844 if (!messages[i]) continue;
1845 if (!(flags & (1 << i))) continue;
1846 flags &= ~(1 << i);
1847
1848 if (!(msg = alloc_hardware_message( input->mouse.info, source, time, 0 ))) return 0;
1849 msg_data = msg->data;
1850
1851 msg->win = get_user_full_handle( win );
1852 msg->msg = messages[i];
1853 msg->wparam = input->mouse.data << 16;
1854 msg->lparam = 0;
1855 msg->x = x;
1856 msg->y = y;
1857 if (origin == IMO_INJECTED) msg_data->flags = LLMHF_INJECTED;
1858
1859 /* specify a sender only when sending the last message */
1860 if (!(flags & ((1 << ARRAY_SIZE( messages )) - 1)))
1861 {
1862 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1863 queue_hardware_message( desktop, msg, 0 );
1864 }
1865 else if (!send_hook_ll_message( desktop, msg, input, NULL ))
1866 queue_hardware_message( desktop, msg, 0 );
1867 }
1868 return wait;
1869 }
1870
1871 /* queue a hardware message for a keyboard event */
1872 static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1873 unsigned int origin, struct msg_queue *sender )
1874 {
1875 struct hw_msg_source source = { IMDT_KEYBOARD, origin };
1876 const struct rawinput_device *device;
1877 struct hardware_msg_data *msg_data;
1878 struct rawinput_message raw_msg;
1879 struct message *msg;
1880 struct thread *foreground;
1881 unsigned char vkey = input->kbd.vkey;
1882 unsigned int message_code, time;
1883 int wait;
1884
1885 if (!(time = input->kbd.time)) time = get_tick_count();
1886
1887 if (!(input->kbd.flags & KEYEVENTF_UNICODE))
1888 {
1889 switch (vkey)
1890 {
1891 case VK_MENU:
1892 case VK_LMENU:
1893 case VK_RMENU:
1894 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1895 break;
1896 case VK_CONTROL:
1897 case VK_LCONTROL:
1898 case VK_RCONTROL:
1899 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1900 break;
1901 case VK_SHIFT:
1902 case VK_LSHIFT:
1903 case VK_RSHIFT:
1904 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1905 break;
1906 }
1907 }
1908
1909 message_code = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1910 switch (vkey)
1911 {
1912 case VK_LMENU:
1913 case VK_RMENU:
1914 if (input->kbd.flags & KEYEVENTF_KEYUP)
1915 {
1916 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1917 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1918 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1919 message_code = WM_SYSKEYUP;
1920 desktop->keystate[VK_MENU] &= ~0x02;
1921 }
1922 else
1923 {
1924 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1925 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1926 message_code = WM_SYSKEYDOWN;
1927 desktop->keystate[VK_MENU] |= 0x02;
1928 }
1929 break;
1930
1931 case VK_LCONTROL:
1932 case VK_RCONTROL:
1933 /* send WM_SYSKEYUP on release if Alt still pressed */
1934 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1935 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1936 message_code = WM_SYSKEYUP;
1937 desktop->keystate[VK_MENU] &= ~0x02;
1938 break;
1939
1940 default:
1941 /* send WM_SYSKEY for Alt-anykey and for F10 */
1942 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1943 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1944 /* fall through */
1945 case VK_F10:
1946 message_code = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1947 desktop->keystate[VK_MENU] &= ~0x02;
1948 break;
1949 }
1950
1951 if ((foreground = get_foreground_thread( desktop, win )))
1952 {
1953 memset( &raw_msg, 0, sizeof(raw_msg) );
1954 raw_msg.foreground = foreground;
1955 raw_msg.desktop = desktop;
1956 raw_msg.source = source;
1957 raw_msg.time = time;
1958 raw_msg.message = WM_INPUT;
1959
1960 msg_data = &raw_msg.data;
1961 msg_data->info = input->kbd.info;
1962 msg_data->size = sizeof(*msg_data);
1963 msg_data->flags = input->kbd.flags;
1964 msg_data->rawinput.type = RIM_TYPEKEYBOARD;
1965 msg_data->rawinput.kbd.message = message_code;
1966 msg_data->rawinput.kbd.vkey = vkey;
1967 msg_data->rawinput.kbd.scan = input->kbd.scan;
1968
1969 enum_processes( queue_rawinput_message, &raw_msg );
1970 release_object( foreground );
1971 }
1972
1973 if ((device = current->process->rawinput_kbd) && (device->flags & RIDEV_NOLEGACY))
1974 {
1975 update_input_key_state( desktop, desktop->keystate, message_code, vkey );
1976 return 0;
1977 }
1978
1979 if (!(msg = alloc_hardware_message( input->kbd.info, source, time, 0 ))) return 0;
1980 msg_data = msg->data;
1981
1982 msg->win = get_user_full_handle( win );
1983 msg->msg = message_code;
1984 msg->lparam = (input->kbd.scan << 16) | 1u; /* repeat count */
1985 if (origin == IMO_INJECTED) msg_data->flags = LLKHF_INJECTED;
1986
1987 if (input->kbd.flags & KEYEVENTF_UNICODE && !vkey)
1988 {
1989 msg->wparam = VK_PACKET;
1990 }
1991 else
1992 {
1993 unsigned int flags = 0;
1994 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
1995 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1996 if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
1997 else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
1998
1999 msg->wparam = vkey;
2000 msg->lparam |= flags << 16;
2001 msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
2002 }
2003
2004 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
2005 queue_hardware_message( desktop, msg, 1 );
2006
2007 return wait;
2008 }
2009
2010 /* queue a hardware message for a custom type of event */
2011 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
2012 unsigned int origin, const hw_input_t *input )
2013 {
2014 struct hw_msg_source source = { IMDT_UNAVAILABLE, origin };
2015 struct hardware_msg_data *msg_data;
2016 struct rawinput_message raw_msg;
2017 struct message *msg;
2018 data_size_t report_size = 0;
2019
2020 switch (input->hw.msg)
2021 {
2022 case WM_INPUT:
2023 case WM_INPUT_DEVICE_CHANGE:
2024 memset( &raw_msg, 0, sizeof(raw_msg) );
2025 raw_msg.source = source;
2026 raw_msg.time = get_tick_count();
2027 raw_msg.message = input->hw.msg;
2028
2029 if (input->hw.rawinput.type == RIM_TYPEHID)
2030 {
2031 raw_msg.hid_report = get_req_data();
2032 report_size = input->hw.rawinput.hid.length * input->hw.rawinput.hid.count;
2033 }
2034
2035 if (report_size != get_req_data_size())
2036 {
2037 set_error( STATUS_INVALID_PARAMETER );
2038 return;
2039 }
2040
2041 msg_data = &raw_msg.data;
2042 msg_data->size = sizeof(*msg_data) + report_size;
2043 msg_data->rawinput = input->hw.rawinput;
2044
2045 enum_processes( queue_rawinput_message, &raw_msg );
2046 return;
2047 }
2048
2049 if (!(msg = alloc_hardware_message( 0, source, get_tick_count(), 0 ))) return;
2050
2051 msg->win = get_user_full_handle( win );
2052 msg->msg = input->hw.msg;
2053 msg->wparam = 0;
2054 msg->lparam = input->hw.lparam;
2055 msg->x = desktop->cursor.x;
2056 msg->y = desktop->cursor.y;
2057
2058 queue_hardware_message( desktop, msg, 1 );
2059 }
2060
2061 /* check message filter for a hardware message */
2062 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
2063 user_handle_t filter_win, unsigned int first, unsigned int last )
2064 {
2065 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
2066 {
2067 /* we can only test the window for a keyboard message since the
2068 * dest window for a mouse message depends on hittest */
2069 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
2070 return 0;
2071 /* the message code is final for a keyboard message, we can simply check it */
2072 return check_msg_filter( msg_code, first, last );
2073 }
2074 else /* mouse message */
2075 {
2076 /* we need to check all possible values that the message can have in the end */
2077
2078 if (check_msg_filter( msg_code, first, last )) return 1;
2079 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
2080
2081 /* all other messages can become non-client messages */
2082 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
2083
2084 /* clicks can become double-clicks or non-client double-clicks */
2085 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
2086 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
2087 {
2088 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
2089 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
2090 }
2091 return 0;
2092 }
2093 }
2094
2095
2096 /* find a hardware message for the given queue */
2097 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
2098 unsigned int first, unsigned int last, unsigned int flags,
2099 struct get_message_reply *reply )
2100 {
2101 struct thread_input *input = thread->queue->input;
2102 struct thread *win_thread;
2103 struct list *ptr;
2104 user_handle_t win;
2105 int clear_bits, got_one = 0;
2106 unsigned int msg_code;
2107
2108 ptr = list_head( &input->msg_list );
2109 if (hw_id)
2110 {
2111 while (ptr)
2112 {
2113 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2114 if (msg->unique_id == hw_id) break;
2115 ptr = list_next( &input->msg_list, ptr );
2116 }
2117 if (!ptr) ptr = list_head( &input->msg_list );
2118 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
2119 }
2120
2121 if (ptr == list_head( &input->msg_list ))
2122 clear_bits = QS_INPUT;
2123 else
2124 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
2125
2126 while (ptr)
2127 {
2128 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2129 struct hardware_msg_data *data = msg->data;
2130
2131 ptr = list_next( &input->msg_list, ptr );
2132 win = find_hardware_message_window( input->desktop, input, msg, &msg_code, &win_thread );
2133 if (!win || !win_thread)
2134 {
2135 /* no window at all, remove it */
2136 update_input_key_state( input->desktop, input->keystate, msg->msg, msg->wparam );
2137 list_remove( &msg->entry );
2138 free_message( msg );
2139 continue;
2140 }
2141 if (win_thread != thread)
2142 {
2143 if (win_thread->queue->input == input)
2144 {
2145 /* wake the other thread */
2146 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
2147 got_one = 1;
2148 }
2149 else
2150 {
2151 /* for another thread input, drop it */
2152 update_input_key_state( input->desktop, input->keystate, msg->msg, msg->wparam );
2153 list_remove( &msg->entry );
2154 free_message( msg );
2155 }
2156 release_object( win_thread );
2157 continue;
2158 }
2159 release_object( win_thread );
2160
2161 /* if we already got a message for another thread, or if it doesn't
2162 * match the filter we skip it */
2163 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
2164 {
2165 clear_bits &= ~get_hardware_msg_bit( msg );
2166 continue;
2167 }
2168
2169 reply->total = msg->data_size;
2170 if (msg->data_size > get_reply_max_size())
2171 {
2172 set_error( STATUS_BUFFER_OVERFLOW );
2173 return 1;
2174 }
2175
2176 /* now we can return it */
2177 if (!msg->unique_id) msg->unique_id = get_unique_id();
2178 reply->type = MSG_HARDWARE;
2179 reply->win = win;
2180 reply->msg = msg_code;
2181 reply->wparam = msg->wparam;
2182 reply->lparam = msg->lparam;
2183 reply->x = msg->x;
2184 reply->y = msg->y;
2185 reply->time = msg->time;
2186
2187 data->hw_id = msg->unique_id;
2188 set_reply_data( msg->data, msg->data_size );
2189 if ((msg->msg == WM_INPUT || msg->msg == WM_INPUT_DEVICE_CHANGE) && (flags & PM_REMOVE))
2190 release_hardware_message( current->queue, data->hw_id );
2191 return 1;
2192 }
2193 /* nothing found, clear the hardware queue bits */
2194 clear_queue_bits( thread->queue, clear_bits );
2195 return 0;
2196 }
2197
2198 /* increment (or decrement if 'incr' is negative) the queue paint count */
2199 void inc_queue_paint_count( struct thread *thread, int incr )
2200 {
2201 struct msg_queue *queue = thread->queue;
2202
2203 assert( queue );
2204
2205 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
2206
2207 if (queue->paint_count)
2208 set_queue_bits( queue, QS_PAINT );
2209 else
2210 clear_queue_bits( queue, QS_PAINT );
2211 }
2212
2213
2214 /* remove all messages and timers belonging to a certain window */
2215 void queue_cleanup_window( struct thread *thread, user_handle_t win )
2216 {
2217 struct msg_queue *queue = thread->queue;
2218 struct list *ptr;
2219 int i;
2220
2221 if (!queue) return;
2222
2223 /* remove timers */
2224
2225 ptr = list_head( &queue->pending_timers );
2226 while (ptr)
2227 {
2228 struct list *next = list_next( &queue->pending_timers, ptr );
2229 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
2230 if (timer->win == win) free_timer( queue, timer );
2231 ptr = next;
2232 }
2233 ptr = list_head( &queue->expired_timers );
2234 while (ptr)
2235 {
2236 struct list *next = list_next( &queue->expired_timers, ptr );
2237 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
2238 if (timer->win == win) free_timer( queue, timer );
2239 ptr = next;
2240 }
2241
2242 /* remove messages */
2243 for (i = 0; i < NB_MSG_KINDS; i++)
2244 {
2245 struct list *ptr, *next;
2246
2247 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
2248 {
2249 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2250 if (msg->win == win)
2251 {
2252 if (msg->msg == WM_QUIT && !queue->quit_message)
2253 {
2254 queue->quit_message = 1;
2255 queue->exit_code = msg->wparam;
2256 }
2257 remove_queue_message( queue, msg, i );
2258 }
2259 }
2260 }
2261
2262 thread_input_cleanup_window( queue, win );
2263 }
2264
2265 /* post a message to a window */
2266 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
2267 {
2268 struct message *msg;
2269 struct thread *thread = get_window_thread( win );
2270
2271 if (!thread) return;
2272
2273 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
2274 {
2275 msg->type = MSG_POSTED;
2276 msg->win = get_user_full_handle( win );
2277 msg->msg = message;
2278 msg->wparam = wparam;
2279 msg->lparam = lparam;
2280 msg->result = NULL;
2281 msg->data = NULL;
2282 msg->data_size = 0;
2283
2284 get_message_defaults( thread->queue, &msg->x, &msg->y, &msg->time );
2285
2286 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
2287 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2288 if (message == WM_HOTKEY)
2289 {
2290 set_queue_bits( thread->queue, QS_HOTKEY );
2291 thread->queue->hotkey_count++;
2292 }
2293 }
2294 release_object( thread );
2295 }
2296
2297 /* send a notify message to a window */
2298 void send_notify_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
2299 {
2300 struct message *msg;
2301 struct thread *thread = get_window_thread( win );
2302
2303 if (!thread) return;
2304
2305 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
2306 {
2307 msg->type = MSG_NOTIFY;
2308 msg->win = get_user_full_handle( win );
2309 msg->msg = message;
2310 msg->wparam = wparam;
2311 msg->lparam = lparam;
2312 msg->result = NULL;
2313 msg->data = NULL;
2314 msg->data_size = 0;
2315
2316 get_message_defaults( thread->queue, &msg->x, &msg->y, &msg->time );
2317
2318 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
2319 set_queue_bits( thread->queue, QS_SENDMESSAGE );
2320 }
2321 release_object( thread );
2322 }
2323
2324 /* post a win event */
2325 void post_win_event( struct thread *thread, unsigned int event,
2326 user_handle_t win, unsigned int object_id,
2327 unsigned int child_id, client_ptr_t hook_proc,
2328 const WCHAR *module, data_size_t module_size,
2329 user_handle_t hook)
2330 {
2331 struct message *msg;
2332
2333 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
2334 {
2335 struct winevent_msg_data *data;
2336
2337 msg->type = MSG_WINEVENT;
2338 msg->win = get_user_full_handle( win );
2339 msg->msg = event;
2340 msg->wparam = object_id;
2341 msg->lparam = child_id;
2342 msg->time = get_tick_count();
2343 msg->result = NULL;
2344
2345 if ((data = malloc( sizeof(*data) + module_size )))
2346 {
2347 data->hook = hook;
2348 data->tid = get_thread_id( current );
2349 data->hook_proc = hook_proc;
2350 memcpy( data + 1, module, module_size );
2351
2352 msg->data = data;
2353 msg->data_size = sizeof(*data) + module_size;
2354
2355 if (debug_level > 1)
2356 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
2357 get_thread_id(thread), event, win, object_id, child_id );
2358 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
2359 set_queue_bits( thread->queue, QS_SENDMESSAGE );
2360 }
2361 else
2362 free( msg );
2363 }
2364 }
2365
2366 /* free all hotkeys on a desktop, optionally filtering by window */
2367 void free_hotkeys( struct desktop *desktop, user_handle_t window )
2368 {
2369 struct hotkey *hotkey, *hotkey2;
2370
2371 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &desktop->hotkeys, struct hotkey, entry )
2372 {
2373 if (!window || hotkey->win == window)
2374 {
2375 list_remove( &hotkey->entry );
2376 free( hotkey );
2377 }
2378 }
2379 }
2380
2381
2382 /* check if the thread owning the window is hung */
2383 DECL_HANDLER(is_window_hung)
2384 {
2385 struct thread *thread;
2386
2387 thread = get_window_thread( req->win );
2388 if (thread)
2389 {
2390 reply->is_hung = is_queue_hung( thread->queue );
2391 release_object( thread );
2392 }
2393 else reply->is_hung = 0;
2394 }
2395
2396
2397 /* get the message queue of the current thread */
2398 DECL_HANDLER(get_msg_queue)
2399 {
2400 struct msg_queue *queue = get_current_queue();
2401
2402 reply->handle = 0;
2403 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
2404 }
2405
2406
2407 /* set the file descriptor associated to the current thread queue */
2408 DECL_HANDLER(set_queue_fd)
2409 {
2410 struct msg_queue *queue = get_current_queue();
2411 struct file *file;
2412 int unix_fd;
2413
2414 if (queue->fd) /* fd can only be set once */
2415 {
2416 set_error( STATUS_ACCESS_DENIED );
2417 return;
2418 }
2419 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
2420
2421 if ((unix_fd = get_file_unix_fd( file )) != -1)
2422 {
2423 if ((unix_fd = dup( unix_fd )) != -1)
2424 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
2425 else
2426 file_set_error();
2427 }
2428 release_object( file );
2429 }
2430
2431
2432 /* set the current message queue wakeup mask */
2433 DECL_HANDLER(set_queue_mask)
2434 {
2435 struct msg_queue *queue = get_current_queue();
2436
2437 if (queue)
2438 {
2439 queue->wake_mask = req->wake_mask;
2440 queue->changed_mask = req->changed_mask;
2441 reply->wake_bits = queue->wake_bits;
2442 reply->changed_bits = queue->changed_bits;
2443 if (is_signaled( queue ))
2444 {
2445 /* if skip wait is set, do what would have been done in the subsequent wait */
2446 if (req->skip_wait) queue->wake_mask = queue->changed_mask = 0;
2447 else wake_up( &queue->obj, 0 );
2448 }
2449 }
2450 }
2451
2452
2453 /* get the current message queue status */
2454 DECL_HANDLER(get_queue_status)
2455 {
2456 struct msg_queue *queue = current->queue;
2457 if (queue)
2458 {
2459 reply->wake_bits = queue->wake_bits;
2460 reply->changed_bits = queue->changed_bits;
2461 queue->changed_bits &= ~req->clear_bits;
2462 }
2463 else reply->wake_bits = reply->changed_bits = 0;
2464 }
2465
2466
2467 /* send a message to a thread queue */
2468 DECL_HANDLER(send_message)
2469 {
2470 struct message *msg;
2471 struct msg_queue *send_queue = get_current_queue();
2472 struct msg_queue *recv_queue = NULL;
2473 struct thread *thread = NULL;
2474
2475 if (!(thread = get_thread_from_id( req->id ))) return;
2476
2477 if (!(recv_queue = thread->queue))
2478 {
2479 set_error( STATUS_INVALID_PARAMETER );
2480 release_object( thread );
2481 return;
2482 }
2483 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
2484 {
2485 set_error( STATUS_TIMEOUT );
2486 release_object( thread );
2487 return;
2488 }
2489
2490 if ((msg = mem_alloc( sizeof(*msg) )))
2491 {
2492 msg->type = req->type;
2493 msg->win = get_user_full_handle( req->win );
2494 msg->msg = req->msg;
2495 msg->wparam = req->wparam;
2496 msg->lparam = req->lparam;
2497 msg->result = NULL;
2498 msg->data = NULL;
2499 msg->data_size = get_req_data_size();
2500
2501 get_message_defaults( recv_queue, &msg->x, &msg->y, &msg->time );
2502
2503 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
2504 {
2505 free( msg );
2506 release_object( thread );
2507 return;
2508 }
2509
2510 switch(msg->type)
2511 {
2512 case MSG_OTHER_PROCESS:
2513 case MSG_ASCII:
2514 case MSG_UNICODE:
2515 case MSG_CALLBACK:
2516 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
2517 {
2518 free_message( msg );
2519 break;
2520 }
2521 /* fall through */
2522 case MSG_NOTIFY:
2523 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
2524 set_queue_bits( recv_queue, QS_SENDMESSAGE );
2525 break;
2526 case MSG_POSTED:
2527 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
2528 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2529 if (msg->msg == WM_HOTKEY)
2530 {
2531 set_queue_bits( recv_queue, QS_HOTKEY );
2532 recv_queue->hotkey_count++;
2533 }
2534 break;
2535 case MSG_HARDWARE: /* should use send_hardware_message instead */
2536 case MSG_CALLBACK_RESULT: /* cannot send this one */
2537 case MSG_HOOK_LL: /* generated internally */
2538 default:
2539 set_error( STATUS_INVALID_PARAMETER );
2540 free( msg );
2541 break;
2542 }
2543 }
2544 release_object( thread );
2545 }
2546
2547 /* send a hardware message to a thread queue */
2548 DECL_HANDLER(send_hardware_message)
2549 {
2550 struct thread *thread = NULL;
2551 struct desktop *desktop;
2552 unsigned int origin = (req->flags & SEND_HWMSG_INJECTED ? IMO_INJECTED : IMO_HARDWARE);
2553 struct msg_queue *sender = get_current_queue();
2554 data_size_t size = min( 256, get_reply_max_size() );
2555
2556 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2557
2558 if (req->win)
2559 {
2560 if (!(thread = get_window_thread( req->win ))) return;
2561 if (desktop != thread->queue->input->desktop)
2562 {
2563 /* don't allow queuing events to a different desktop */
2564 release_object( desktop );
2565 return;
2566 }
2567 }
2568
2569 reply->prev_x = desktop->cursor.x;
2570 reply->prev_y = desktop->cursor.y;
2571
2572 switch (req->input.type)
2573 {
2574 case INPUT_MOUSE:
2575 reply->wait = queue_mouse_message( desktop, req->win, &req->input, origin, sender );
2576 break;
2577 case INPUT_KEYBOARD:
2578 reply->wait = queue_keyboard_message( desktop, req->win, &req->input, origin, sender );
2579 break;
2580 case INPUT_HARDWARE:
2581 queue_custom_hardware_message( desktop, req->win, origin, &req->input );
2582 break;
2583 default:
2584 set_error( STATUS_INVALID_PARAMETER );
2585 }
2586 if (thread) release_object( thread );
2587
2588 reply->new_x = desktop->cursor.x;
2589 reply->new_y = desktop->cursor.y;
2590 set_reply_data( desktop->keystate, size );
2591 release_object( desktop );
2592 }
2593
2594 /* post a quit message to the current queue */
2595 DECL_HANDLER(post_quit_message)
2596 {
2597 struct msg_queue *queue = get_current_queue();
2598
2599 if (!queue)
2600 return;
2601
2602 queue->quit_message = 1;
2603 queue->exit_code = req->exit_code;
2604 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2605 }
2606
2607 /* get a message from the current queue */
2608 DECL_HANDLER(get_message)
2609 {
2610 struct timer *timer;
2611 struct list *ptr;
2612 struct msg_queue *queue = get_current_queue();
2613 user_handle_t get_win = get_user_full_handle( req->get_win );
2614 unsigned int filter = req->flags >> 16;
2615
2616 reply->active_hooks = get_active_hooks();
2617
2618 if (get_win && get_win != 1 && get_win != -1 && !get_user_object( get_win, USER_WINDOW ))
2619 {
2620 set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2621 return;
2622 }
2623
2624 if (!queue) return;
2625 queue->last_get_msg = current_time;
2626 if (!filter) filter = QS_ALLINPUT;
2627
2628 /* first check for sent messages */
2629 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2630 {
2631 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2632 receive_message( queue, msg, reply );
2633 return;
2634 }
2635
2636 /* clear changed bits so we can wait on them if we don't find a message */
2637 if (filter & QS_POSTMESSAGE)
2638 {
2639 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2640 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2641 }
2642 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2643 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2644
2645 /* then check for posted messages */
2646 if ((filter & QS_POSTMESSAGE) &&
2647 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2648 return;
2649
2650 if ((filter & QS_HOTKEY) && queue->hotkey_count &&
2651 req->get_first <= WM_HOTKEY && req->get_last >= WM_HOTKEY &&
2652 get_posted_message( queue, get_win, WM_HOTKEY, WM_HOTKEY, req->flags, reply ))
2653 return;
2654
2655 /* only check for quit messages if not posted messages pending */
2656 if ((filter & QS_POSTMESSAGE) && get_quit_message( queue, req->flags, reply ))
2657 return;
2658
2659 /* then check for any raw hardware message */
2660 if ((filter & QS_INPUT) &&
2661 filter_contains_hw_range( req->get_first, req->get_last ) &&
2662 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, req->flags, reply ))
2663 return;
2664
2665 /* now check for WM_PAINT */
2666 if ((filter & QS_PAINT) &&
2667 queue->paint_count &&
2668 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2669 (reply->win = find_window_to_repaint( get_win, current )))
2670 {
2671 reply->type = MSG_POSTED;
2672 reply->msg = WM_PAINT;
2673 reply->wparam = 0;
2674 reply->lparam = 0;
2675 get_message_defaults( queue, &reply->x, &reply->y, &reply->time );
2676 return;
2677 }
2678
2679 /* now check for timer */
2680 if ((filter & QS_TIMER) &&
2681 (timer = find_expired_timer( queue, get_win, req->get_first,
2682 req->get_last, (req->flags & PM_REMOVE) )))
2683 {
2684 reply->type = MSG_POSTED;
2685 reply->win = timer->win;
2686 reply->msg = timer->msg;
2687 reply->wparam = timer->id;
2688 reply->lparam = timer->lparam;
2689 get_message_defaults( queue, &reply->x, &reply->y, &reply->time );
2690 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2691 set_event( current->process->idle_event );
2692 return;
2693 }
2694
2695 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2696 queue->wake_mask = req->wake_mask;
2697 queue->changed_mask = req->changed_mask;
2698 set_error( STATUS_PENDING ); /* FIXME */
2699 }
2700
2701
2702 /* reply to a sent message */
2703 DECL_HANDLER(reply_message)
2704 {
2705 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2706 else if (current->queue->recv_result)
2707 reply_message( current->queue, req->result, 0, req->remove,
2708 get_req_data(), get_req_data_size() );
2709 }
2710
2711
2712 /* accept the current hardware message */
2713 DECL_HANDLER(accept_hardware_message)
2714 {
2715 if (current->queue)
2716 release_hardware_message( current->queue, req->hw_id );
2717 else
2718 set_error( STATUS_ACCESS_DENIED );
2719 }
2720
2721
2722 /* retrieve the reply for the last message sent */
2723 DECL_HANDLER(get_message_reply)
2724 {
2725 struct message_result *result;
2726 struct list *entry;
2727 struct msg_queue *queue = current->queue;
2728
2729 if (queue)
2730 {
2731 set_error( STATUS_PENDING );
2732 reply->result = 0;
2733
2734 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2735
2736 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2737 if (result->replied || req->cancel)
2738 {
2739 if (result->replied)
2740 {
2741 reply->result = result->result;
2742 set_error( result->error );
2743 if (result->data)
2744 {
2745 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2746 set_reply_data_ptr( result->data, data_len );
2747 result->data = NULL;
2748 result->data_size = 0;
2749 }
2750 }
2751 remove_result_from_sender( result );
2752
2753 entry = list_head( &queue->send_result );
2754 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2755 else
2756 {
2757 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2758 if (result->replied) set_queue_bits( queue, QS_SMRESULT );
2759 else clear_queue_bits( queue, QS_SMRESULT );
2760 }
2761 }
2762 }
2763 else set_error( STATUS_ACCESS_DENIED );
2764 }
2765
2766
2767 /* set a window timer */
2768 DECL_HANDLER(set_win_timer)
2769 {
2770 struct timer *timer;
2771 struct msg_queue *queue;
2772 struct thread *thread = NULL;
2773 user_handle_t win = 0;
2774 lparam_t id = req->id;
2775
2776 if (req->win)
2777 {
2778 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2779 {
2780 set_error( STATUS_INVALID_HANDLE );
2781 return;
2782 }
2783 if (thread->process != current->process)
2784 {
2785 release_object( thread );
2786 set_error( STATUS_ACCESS_DENIED );
2787 return;
2788 }
2789 queue = thread->queue;
2790 /* remove it if it existed already */
2791 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2792 }
2793 else
2794 {
2795 queue = get_current_queue();
2796 /* look for a timer with this id */
2797 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2798 {
2799 /* free and reuse id */
2800 free_timer( queue, timer );
2801 }
2802 else
2803 {
2804 lparam_t end_id = queue->next_timer_id;
2805
2806 /* find a free id for it */
2807 while (1)
2808 {
2809 id = queue->next_timer_id;
2810 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2811
2812 if (!find_timer( queue, 0, req->msg, id )) break;
2813 if (queue->next_timer_id == end_id)
2814 {
2815 set_win32_error( ERROR_NO_MORE_USER_HANDLES );
2816 return;
2817 }
2818 }
2819 }
2820 }
2821
2822 if ((timer = set_timer( queue, req->rate )))
2823 {
2824 timer->win = win;
2825 timer->msg = req->msg;
2826 timer->id = id;
2827 timer->lparam = req->lparam;
2828 reply->id = id;
2829 }
2830 if (thread) release_object( thread );
2831 }
2832
2833 /* kill a window timer */
2834 DECL_HANDLER(kill_win_timer)
2835 {
2836 struct timer *timer;
2837 struct thread *thread;
2838 user_handle_t win = 0;
2839
2840 if (req->win)
2841 {
2842 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2843 {
2844 set_error( STATUS_INVALID_HANDLE );
2845 return;
2846 }
2847 if (thread->process != current->process)
2848 {
2849 release_object( thread );
2850 set_error( STATUS_ACCESS_DENIED );
2851 return;
2852 }
2853 }
2854 else thread = (struct thread *)grab_object( current );
2855
2856 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2857 free_timer( thread->queue, timer );
2858 else
2859 set_error( STATUS_INVALID_PARAMETER );
2860
2861 release_object( thread );
2862 }
2863
2864 DECL_HANDLER(register_hotkey)
2865 {
2866 struct desktop *desktop;
2867 user_handle_t win_handle = req->window;
2868 struct hotkey *hotkey;
2869 struct hotkey *new_hotkey = NULL;
2870 struct thread *thread;
2871 const int modifier_flags = MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN;
2872
2873 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2874
2875 if (win_handle)
2876 {
2877 if (!(win_handle = get_valid_window_handle( win_handle )))
2878 {
2879 release_object( desktop );
2880 return;
2881 }
2882
2883 thread = get_window_thread( win_handle );
2884 if (thread) release_object( thread );
2885
2886 if (thread != current)
2887 {
2888 release_object( desktop );
2889 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2890 return;
2891 }
2892 }
2893
2894 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2895 {
2896 if (req->vkey == hotkey->vkey &&
2897 (req->flags & modifier_flags) == (hotkey->flags & modifier_flags))
2898 {
2899 release_object( desktop );
2900 set_win32_error( ERROR_HOTKEY_ALREADY_REGISTERED );
2901 return;
2902 }
2903 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2904 new_hotkey = hotkey;
2905 }
2906
2907 if (new_hotkey)
2908 {
2909 reply->replaced = 1;
2910 reply->flags = new_hotkey->flags;
2911 reply->vkey = new_hotkey->vkey;
2912 }
2913 else
2914 {
2915 new_hotkey = mem_alloc( sizeof(*new_hotkey) );
2916 if (new_hotkey)
2917 {
2918 list_add_tail( &desktop->hotkeys, &new_hotkey->entry );
2919 new_hotkey->queue = current->queue;
2920 new_hotkey->win = win_handle;
2921 new_hotkey->id = req->id;
2922 }
2923 }
2924
2925 if (new_hotkey)
2926 {
2927 new_hotkey->flags = req->flags;
2928 new_hotkey->vkey = req->vkey;
2929 }
2930
2931 release_object( desktop );
2932 }
2933
2934 DECL_HANDLER(unregister_hotkey)
2935 {
2936 struct desktop *desktop;
2937 user_handle_t win_handle = req->window;
2938 struct hotkey *hotkey;
2939 struct thread *thread;
2940
2941 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2942
2943 if (win_handle)
2944 {
2945 if (!(win_handle = get_valid_window_handle( win_handle )))
2946 {
2947 release_object( desktop );
2948 return;
2949 }
2950
2951 thread = get_window_thread( win_handle );
2952 if (thread) release_object( thread );
2953
2954 if (thread != current)
2955 {
2956 release_object( desktop );
2957 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2958 return;
2959 }
2960 }
2961
2962 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2963 {
2964 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2965 goto found;
2966 }
2967
2968 release_object( desktop );
2969 set_win32_error( ERROR_HOTKEY_NOT_REGISTERED );
2970 return;
2971
2972 found:
2973 reply->flags = hotkey->flags;
2974 reply->vkey = hotkey->vkey;
2975 list_remove( &hotkey->entry );
2976 free( hotkey );
2977 release_object( desktop );
2978 }
2979
2980 /* attach (or detach) thread inputs */
2981 DECL_HANDLER(attach_thread_input)
2982 {
2983 struct thread *thread_from = get_thread_from_id( req->tid_from );
2984 struct thread *thread_to = get_thread_from_id( req->tid_to );
2985
2986 if (!thread_from || !thread_to)
2987 {
2988 if (thread_from) release_object( thread_from );
2989 if (thread_to) release_object( thread_to );
2990 return;
2991 }
2992 if (thread_from != thread_to)
2993 {
2994 if (req->attach)
2995 {
2996 if ((thread_to->queue || thread_to == current) &&
2997 (thread_from->queue || thread_from == current))
2998 attach_thread_input( thread_from, thread_to );
2999 else
3000 set_error( STATUS_INVALID_PARAMETER );
3001 }
3002 else
3003 {
3004 if (thread_from->queue && thread_to->queue &&
3005 thread_from->queue->input == thread_to->queue->input)
3006 detach_thread_input( thread_from );
3007 else
3008 set_error( STATUS_ACCESS_DENIED );
3009 }
3010 }
3011 else set_error( STATUS_ACCESS_DENIED );
3012 release_object( thread_from );
3013 release_object( thread_to );
3014 }
3015
3016
3017 /* get thread input data */
3018 DECL_HANDLER(get_thread_input)
3019 {
3020 struct thread *thread = NULL;
3021 struct desktop *desktop;
3022 struct thread_input *input;
3023
3024 if (req->tid)
3025 {
3026 if (!(thread = get_thread_from_id( req->tid ))) return;
3027 if (!(desktop = get_thread_desktop( thread, 0 )))
3028 {
3029 release_object( thread );
3030 return;
3031 }
3032 input = thread->queue ? thread->queue->input : NULL;
3033 }
3034 else
3035 {
3036 if (!(desktop = get_thread_desktop( current, 0 ))) return;
3037 input = desktop->foreground_input; /* get the foreground thread info */
3038 }
3039
3040 if (input)
3041 {
3042 reply->focus = input->focus;
3043 reply->capture = input->capture;
3044 reply->active = input->active;
3045 reply->menu_owner = input->menu_owner;
3046 reply->move_size = input->move_size;
3047 reply->caret = input->caret;
3048 reply->cursor = input->cursor;
3049 reply->show_count = input->cursor_count;
3050 reply->rect = input->caret_rect;
3051 }
3052
3053 /* foreground window is active window of foreground thread */
3054 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
3055 if (thread) release_object( thread );
3056 release_object( desktop );
3057 }
3058
3059
3060 /* retrieve queue keyboard state for current thread or global async state */
3061 DECL_HANDLER(get_key_state)
3062 {
3063 struct desktop *desktop;
3064 data_size_t size = min( 256, get_reply_max_size() );
3065
3066 if (req->async) /* get global async key state */
3067 {
3068 if (!(desktop = get_thread_desktop( current, 0 ))) return;
3069 if (req->key >= 0)
3070 {
3071 reply->state = desktop->keystate[req->key & 0xff];
3072 desktop->keystate[req->key & 0xff] &= ~0x40;
3073 }
3074 set_reply_data( desktop->keystate, size );
3075 release_object( desktop );
3076 }
3077 else
3078 {
3079 struct msg_queue *queue = get_current_queue();
3080 unsigned char *keystate = queue->input->keystate;
3081 if (req->key >= 0)
3082 {
3083 sync_input_keystate( queue->input );
3084 reply->state = keystate[req->key & 0xff];
3085 }
3086 set_reply_data( keystate, size );
3087 }
3088 }
3089
3090
3091 /* set queue keyboard state for current thread */
3092 DECL_HANDLER(set_key_state)
3093 {
3094 struct desktop *desktop;
3095 struct msg_queue *queue = get_current_queue();
3096 data_size_t size = min( 256, get_req_data_size() );
3097
3098 memcpy( queue->input->keystate, get_req_data(), size );
3099 memcpy( queue->input->desktop_keystate, queue->input->desktop->keystate, 256 );
3100 if (req->async && (desktop = get_thread_desktop( current, 0 )))
3101 {
3102 memcpy( desktop->keystate, get_req_data(), size );
3103 release_object( desktop );
3104 }
3105 }
3106
3107
3108 /* set the system foreground window */
3109 DECL_HANDLER(set_foreground_window)
3110 {
3111 struct thread *thread = NULL;
3112 struct desktop *desktop;
3113 struct msg_queue *queue = get_current_queue();
3114
3115 if (!(desktop = get_thread_desktop( current, 0 ))) return;
3116 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
3117 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
3118 reply->send_msg_new = FALSE;
3119
3120 if (is_valid_foreground_window( req->handle ) &&
3121 (thread = get_window_thread( req->handle )) &&
3122 thread->queue->input->desktop == desktop)
3123 {
3124 set_foreground_input( desktop, thread->queue->input );
3125 reply->send_msg_new = (desktop->foreground_input != queue->input);
3126 }
3127 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
3128
3129 if (thread) release_object( thread );
3130 release_object( desktop );
3131 }
3132
3133
3134 /* set the current thread focus window */
3135 DECL_HANDLER(set_focus_window)
3136 {
3137 struct msg_queue *queue = get_current_queue();
3138
3139 reply->previous = 0;
3140 if (queue && check_queue_input_window( queue, req->handle ))
3141 {
3142 reply->previous = queue->input->focus;
3143 queue->input->focus = get_user_full_handle( req->handle );
3144 }
3145 }
3146
3147
3148 /* set the current thread active window */
3149 DECL_HANDLER(set_active_window)
3150 {
3151 struct msg_queue *queue = get_current_queue();
3152
3153 reply->previous = 0;
3154 if (queue && check_queue_input_window( queue, req->handle ))
3155 {
3156 if (!req->handle || make_window_active( req->handle ))
3157 {
3158 reply->previous = queue->input->active;
3159 queue->input->active = get_user_full_handle( req->handle );
3160 }
3161 else set_error( STATUS_INVALID_HANDLE );
3162 }
3163 }
3164
3165
3166 /* set the current thread capture window */
3167 DECL_HANDLER(set_capture_window)
3168 {
3169 struct msg_queue *queue = get_current_queue();
3170
3171 reply->previous = reply->full_handle = 0;
3172 if (queue && check_queue_input_window( queue, req->handle ))
3173 {
3174 struct thread_input *input = queue->input;
3175
3176 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
3177 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
3178 {
3179 set_error(STATUS_ACCESS_DENIED);
3180 return;
3181 }
3182 reply->previous = input->capture;
3183 input->capture = get_user_full_handle( req->handle );
3184 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
3185 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
3186 reply->full_handle = input->capture;
3187 }
3188 }
3189
3190
3191 /* Set the current thread caret window */
3192 DECL_HANDLER(set_caret_window)
3193 {
3194 struct msg_queue *queue = get_current_queue();
3195
3196 reply->previous = 0;
3197 if (queue && check_queue_input_window( queue, req->handle ))
3198 {
3199 struct thread_input *input = queue->input;
3200
3201 reply->previous = input->caret;
3202 reply->old_rect = input->caret_rect;
3203 reply->old_hide = input->caret_hide;
3204 reply->old_state = input->caret_state;
3205
3206 set_caret_window( input, get_user_full_handle(req->handle) );
3207 input->caret_rect.right = input->caret_rect.left + req->width;
3208 input->caret_rect.bottom = input->caret_rect.top + req->height;
3209 }
3210 }
3211
3212
3213 /* Set the current thread caret information */
3214 DECL_HANDLER(set_caret_info)
3215 {
3216 struct msg_queue *queue = get_current_queue();
3217 struct thread_input *input;
3218
3219 if (!queue) return;
3220 input = queue->input;
3221 reply->full_handle = input->caret;
3222 reply->old_rect = input->caret_rect;
3223 reply->old_hide = input->caret_hide;
3224 reply->old_state = input->caret_state;
3225
3226 if (req->handle && get_user_full_handle(req->handle) != input->caret)
3227 {
3228 set_error( STATUS_ACCESS_DENIED );
3229 return;
3230 }
3231 if (req->flags & SET_CARET_POS)
3232 {
3233 input->caret_rect.right += req->x - input->caret_rect.left;
3234 input->caret_rect.bottom += req->y - input->caret_rect.top;
3235 input->caret_rect.left = req->x;
3236 input->caret_rect.top = req->y;
3237 }
3238 if (req->flags & SET_CARET_HIDE)
3239 {
3240 input->caret_hide += req->hide;
3241 if (input->caret_hide < 0) input->caret_hide = 0;
3242 }
3243 if (req->flags & SET_CARET_STATE)
3244 {
3245 switch (req->state)
3246 {
3247 case CARET_STATE_OFF: input->caret_state = 0; break;
3248 case CARET_STATE_ON: input->caret_state = 1; break;
3249 case CARET_STATE_TOGGLE: input->caret_state = !input->caret_state; break;
3250 case CARET_STATE_ON_IF_MOVED:
3251 if (req->x != reply->old_rect.left || req->y != reply->old_rect.top) input->caret_state = 1;
3252 break;
3253 }
3254 }
3255 }
3256
3257
3258 /* get the time of the last input event */
3259 DECL_HANDLER(get_last_input_time)
3260 {
3261 reply->time = last_input_time;
3262 }
3263
3264 /* set/get the current cursor */
3265 DECL_HANDLER(set_cursor)
3266 {
3267 struct msg_queue *queue = get_current_queue();
3268 struct thread_input *input;
3269
3270 if (!queue) return;
3271 input = queue->input;
3272
3273 reply->prev_handle = input->cursor;
3274 reply->prev_count = input->cursor_count;
3275 reply->prev_x = input->desktop->cursor.x;
3276 reply->prev_y = input->desktop->cursor.y;
3277
3278 if (req->flags & SET_CURSOR_HANDLE)
3279 {
3280 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
3281 {
3282 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
3283 return;
3284 }
3285 input->cursor = req->handle;
3286 }
3287 if (req->flags & SET_CURSOR_COUNT)
3288 {
3289 queue->cursor_count += req->show_count;
3290 input->cursor_count += req->show_count;
3291 }
3292 if (req->flags & SET_CURSOR_POS)
3293 {
3294 set_cursor_pos( input->desktop, req->x, req->y );
3295 }
3296 if (req->flags & (SET_CURSOR_CLIP | SET_CURSOR_NOCLIP))
3297 {
3298 struct desktop *desktop = input->desktop;
3299
3300 /* only the desktop owner can set the message */
3301 if (req->clip_msg && get_top_window_owner(desktop) == current->process)
3302 desktop->cursor.clip_msg = req->clip_msg;
3303
3304 set_clip_rectangle( desktop, (req->flags & SET_CURSOR_NOCLIP) ? NULL : &req->clip, 0 );
3305 }
3306
3307 reply->new_x = input->desktop->cursor.x;
3308 reply->new_y = input->desktop->cursor.y;
3309 reply->new_clip = input->desktop->cursor.clip;
3310 reply->last_change = input->desktop->cursor.last_change;
3311 }
3312
3313 /* Get the history of the 64 last cursor positions */
3314 DECL_HANDLER(get_cursor_history)
3315 {
3316 cursor_pos_t *pos;
3317 unsigned int i, count = min( 64, get_reply_max_size() / sizeof(*pos) );
3318
3319 if ((pos = set_reply_data_size( count * sizeof(*pos) )))
3320 for (i = 0; i < count; i++)
3321 pos[i] = cursor_history[(i + cursor_history_latest) % ARRAY_SIZE(cursor_history)];
3322 }
3323
3324 DECL_HANDLER(get_rawinput_buffer)
3325 {
3326 struct thread_input *input = current->queue->input;
3327 data_size_t size = 0, next_size = 0, pos = 0;
3328 struct list *ptr;
3329 char *buf, *tmp;
3330 int count = 0, buf_size = 16 * sizeof(struct hardware_msg_data);
3331
3332 if (!req->buffer_size) buf = NULL;
3333 else if (!(buf = mem_alloc( buf_size ))) return;
3334
3335 ptr = list_head( &input->msg_list );
3336 while (ptr)
3337 {
3338 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
3339 struct hardware_msg_data *data = msg->data;
3340 data_size_t extra_size = data->size - sizeof(*data);
3341
3342 ptr = list_next( &input->msg_list, ptr );
3343 if (msg->msg != WM_INPUT) continue;
3344
3345 next_size = req->rawinput_size + extra_size;
3346 if (size + next_size > req->buffer_size) break;
3347 if (pos + data->size > get_reply_max_size()) break;
3348 if (pos + data->size > buf_size)
3349 {
3350 buf_size += buf_size / 2 + extra_size;
3351 if (!(tmp = realloc( buf, buf_size )))
3352 {
3353 free( buf );
3354 set_error( STATUS_NO_MEMORY );
3355 return;
3356 }
3357 buf = tmp;
3358 }
3359
3360 memcpy( buf + pos, data, data->size );
3361 list_remove( &msg->entry );
3362 free_message( msg );
3363
3364 size += next_size;
3365 pos += sizeof(*data) + extra_size;
3366 count++;
3367 }
3368
3369 reply->next_size = next_size;
3370 reply->count = count;
3371 set_reply_data_ptr( buf, pos );
3372 }
3373
3374 DECL_HANDLER(update_rawinput_devices)
3375 {
3376 const struct rawinput_device *tmp, *devices = get_req_data();
3377 unsigned int device_count = get_req_data_size() / sizeof (*devices);
3378 size_t size = device_count * sizeof(*devices);
3379 struct process *process = current->process;
3380
3381 if (!size)
3382 {
3383 process->rawinput_device_count = 0;
3384 process->rawinput_mouse = NULL;
3385 process->rawinput_kbd = NULL;
3386 return;
3387 }
3388
3389 if (!(tmp = realloc( process->rawinput_devices, size )))
3390 {
3391 set_error( STATUS_NO_MEMORY );
3392 return;
3393 }
3394 process->rawinput_devices = (struct rawinput_device *)tmp;
3395 process->rawinput_device_count = device_count;
3396 memcpy( process->rawinput_devices, devices, size );
3397
3398 process->rawinput_mouse = find_rawinput_device( process, 1, 2 );
3399 process->rawinput_kbd = find_rawinput_device( process, 1, 6 );
3400 }
Windows API implementation