2 * Server-side window handling
4 * Copyright (C) 2001 Alexandre Julliard
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.
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.
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
22 #include "wine/port.h"
28 #define WIN32_NO_STATUS
42 /* a window property */
45 unsigned short type
; /* property type (see below) */
46 atom_t atom
; /* property atom */
47 obj_handle_t handle
; /* property handle (user-defined storage) */
52 PROP_TYPE_FREE
, /* free entry */
53 PROP_TYPE_STRING
, /* atom that was originally a string */
54 PROP_TYPE_ATOM
/* plain atom */
60 struct window
*parent
; /* parent window */
61 user_handle_t owner
; /* owner of this window */
62 struct list children
; /* list of children in Z-order */
63 struct list unlinked
; /* list of children not linked in the Z-order list */
64 struct list entry
; /* entry in parent's children list */
65 user_handle_t handle
; /* full handle for this window */
66 struct thread
*thread
; /* thread owning the window */
67 struct desktop
*desktop
; /* desktop that the window belongs to */
68 struct window_class
*class; /* window class */
69 atom_t atom
; /* class atom */
70 user_handle_t last_active
; /* last active popup */
71 rectangle_t window_rect
; /* window rectangle (relative to parent client area) */
72 rectangle_t visible_rect
; /* visible part of window rect (relative to parent client area) */
73 rectangle_t client_rect
; /* client rectangle (relative to parent client area) */
74 struct region
*win_region
; /* region for shaped windows (relative to window rect) */
75 struct region
*update_region
; /* update region (relative to window rect) */
76 unsigned int style
; /* window style */
77 unsigned int ex_style
; /* window extended style */
78 unsigned int id
; /* window id */
79 void* instance
; /* creator instance */
80 unsigned int is_unicode
: 1; /* ANSI or unicode */
81 unsigned int is_linked
: 1; /* is it linked into the parent z-order list? */
82 unsigned long user_data
; /* user-specific data */
83 WCHAR
*text
; /* window caption text */
84 unsigned int paint_flags
; /* various painting flags */
85 int prop_inuse
; /* number of in-use window properties */
86 int prop_alloc
; /* number of allocated window properties */
87 struct property
*properties
; /* window properties array */
88 int nb_extra_bytes
; /* number of extra bytes */
89 char extra_bytes
[1]; /* extra bytes storage */
92 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
93 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
94 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
95 #define PAINT_DELAYED_ERASE 0x08 /* still needs erase after WM_ERASEBKGND */
97 /* growable array of user handles */
98 struct user_handle_array
100 user_handle_t
*handles
;
105 /* global window pointers */
106 static struct window
*shell_window
;
107 static struct window
*shell_listview
;
108 static struct window
*progman_window
;
109 static struct window
*taskman_window
;
111 /* magic HWND_TOP etc. pointers */
112 #define WINPTR_TOP ((struct window *)1L)
113 #define WINPTR_BOTTOM ((struct window *)2L)
114 #define WINPTR_TOPMOST ((struct window *)3L)
115 #define WINPTR_NOTOPMOST ((struct window *)4L)
117 /* retrieve a pointer to a window from its handle */
118 static inline struct window
*get_window( user_handle_t handle
)
120 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
121 if (!ret
) set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
125 /* check if window is the desktop */
126 static inline int is_desktop_window( const struct window
*win
)
128 return !win
->parent
; /* only desktop windows have no parent */
131 /* get next window in Z-order list */
132 static inline struct window
*get_next_window( struct window
*win
)
134 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
135 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
138 /* get previous window in Z-order list */
139 static inline struct window
*get_prev_window( struct window
*win
)
141 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
142 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
145 /* get first child in Z-order list */
146 static inline struct window
*get_first_child( struct window
*win
)
148 struct list
*ptr
= list_head( &win
->children
);
149 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
152 /* get last child in Z-order list */
153 static inline struct window
*get_last_child( struct window
*win
)
155 struct list
*ptr
= list_tail( &win
->children
);
156 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
159 /* link a window at the right place in the siblings list */
160 static void link_window( struct window
*win
, struct window
*previous
)
162 if (previous
== WINPTR_NOTOPMOST
)
164 if (!(win
->ex_style
& WS_EX_TOPMOST
) && win
->is_linked
) return; /* nothing to do */
165 win
->ex_style
&= ~WS_EX_TOPMOST
;
166 previous
= WINPTR_TOP
; /* fallback to the HWND_TOP case */
169 list_remove( &win
->entry
); /* unlink it from the previous location */
171 if (previous
== WINPTR_BOTTOM
)
173 list_add_tail( &win
->parent
->children
, &win
->entry
);
174 win
->ex_style
&= ~WS_EX_TOPMOST
;
176 else if (previous
== WINPTR_TOPMOST
)
178 list_add_head( &win
->parent
->children
, &win
->entry
);
179 win
->ex_style
|= WS_EX_TOPMOST
;
181 else if (previous
== WINPTR_TOP
)
183 struct list
*entry
= win
->parent
->children
.next
;
184 if (!(win
->ex_style
& WS_EX_TOPMOST
)) /* put it above the first non-topmost window */
186 while (entry
!= &win
->parent
->children
&&
187 LIST_ENTRY( entry
, struct window
, entry
)->ex_style
& WS_EX_TOPMOST
)
190 list_add_before( entry
, &win
->entry
);
194 list_add_after( &previous
->entry
, &win
->entry
);
195 if (!(previous
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
&= ~WS_EX_TOPMOST
;
198 struct window
*next
= get_next_window( win
);
199 if (next
&& (next
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
|= WS_EX_TOPMOST
;
206 /* change the parent of a window (or unlink the window if the new parent is NULL) */
207 static int set_parent_window( struct window
*win
, struct window
*parent
)
211 /* make sure parent is not a child of window */
212 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
216 set_error( STATUS_INVALID_PARAMETER
);
223 win
->parent
= parent
;
224 link_window( win
, WINPTR_TOP
);
226 /* if parent belongs to a different thread and the window isn't */
227 /* top-level, attach the two threads */
228 if (parent
->thread
&& parent
->thread
!= win
->thread
&& !is_desktop_window(parent
))
229 attach_thread_input( win
->thread
, parent
->thread
);
231 else /* move it to parent unlinked list */
233 list_remove( &win
->entry
); /* unlink it from the previous location */
234 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
240 /* append a user handle to a handle array */
241 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
243 if (array
->count
>= array
->total
)
245 int new_total
= max( array
->total
* 2, 32 );
246 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
249 free( array
->handles
);
250 set_error( STATUS_NO_MEMORY
);
253 array
->handles
= new_array
;
254 array
->total
= new_total
;
256 array
->handles
[array
->count
++] = handle
;
260 /* set a window property */
261 static void set_property( struct window
*win
, atom_t atom
, obj_handle_t handle
, enum property_type type
)
264 struct property
*new_props
;
266 /* check if it exists already */
267 for (i
= 0; i
< win
->prop_inuse
; i
++)
269 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
274 if (win
->properties
[i
].atom
== atom
)
276 win
->properties
[i
].type
= type
;
277 win
->properties
[i
].handle
= handle
;
282 /* need to add an entry */
283 if (!grab_global_atom( NULL
, atom
)) return;
287 if (win
->prop_inuse
>= win
->prop_alloc
)
289 /* need to grow the array */
290 if (!(new_props
= realloc( win
->properties
,
291 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
293 set_error( STATUS_NO_MEMORY
);
294 release_global_atom( NULL
, atom
);
297 win
->prop_alloc
+= 16;
298 win
->properties
= new_props
;
300 free
= win
->prop_inuse
++;
302 win
->properties
[free
].atom
= atom
;
303 win
->properties
[free
].type
= type
;
304 win
->properties
[free
].handle
= handle
;
307 /* remove a window property */
308 static obj_handle_t
remove_property( struct window
*win
, atom_t atom
)
312 for (i
= 0; i
< win
->prop_inuse
; i
++)
314 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
315 if (win
->properties
[i
].atom
== atom
)
317 release_global_atom( NULL
, atom
);
318 win
->properties
[i
].type
= PROP_TYPE_FREE
;
319 return win
->properties
[i
].handle
;
322 /* FIXME: last error? */
326 /* find a window property */
327 static obj_handle_t
get_property( struct window
*win
, atom_t atom
)
331 for (i
= 0; i
< win
->prop_inuse
; i
++)
333 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
334 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].handle
;
336 /* FIXME: last error? */
340 /* destroy all properties of a window */
341 static inline void destroy_properties( struct window
*win
)
345 if (!win
->properties
) return;
346 for (i
= 0; i
< win
->prop_inuse
; i
++)
348 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
349 release_global_atom( NULL
, win
->properties
[i
].atom
);
351 free( win
->properties
);
354 /* detach a window from its owner thread but keep the window around */
355 static void detach_window_thread( struct window
*win
)
357 struct thread
*thread
= win
->thread
;
362 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
363 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
364 queue_cleanup_window( thread
, win
->handle
);
366 assert( thread
->desktop_users
> 0 );
367 thread
->desktop_users
--;
368 release_class( win
->class );
371 /* don't hold a reference to the desktop so that the desktop window can be */
372 /* destroyed when the desktop ref count reaches zero */
373 release_object( win
->desktop
);
377 /* destroy a window */
378 void destroy_window( struct window
*win
)
380 /* destroy all children */
381 while (!list_empty(&win
->children
))
382 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
383 while (!list_empty(&win
->unlinked
))
384 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
386 /* reset global window pointers, if the corresponding window is destroyed */
387 if (win
== shell_window
) shell_window
= NULL
;
388 if (win
== shell_listview
) shell_listview
= NULL
;
389 if (win
== progman_window
) progman_window
= NULL
;
390 if (win
== taskman_window
) taskman_window
= NULL
;
391 free_user_handle( win
->handle
);
392 destroy_properties( win
);
393 list_remove( &win
->entry
);
394 if (is_desktop_window(win
))
396 struct desktop
*desktop
= win
->desktop
;
397 assert( desktop
->top_window
== win
|| desktop
->msg_window
== win
);
398 if (desktop
->top_window
== win
) desktop
->top_window
= NULL
;
399 else desktop
->msg_window
= NULL
;
401 detach_window_thread( win
);
402 if (win
->win_region
) free_region( win
->win_region
);
403 if (win
->update_region
) free_region( win
->update_region
);
404 if (win
->class) release_class( win
->class );
406 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
410 /* get the process owning the top window of a given desktop */
411 struct process
*get_top_window_owner( struct desktop
*desktop
)
413 struct window
*win
= desktop
->top_window
;
414 if (!win
|| !win
->thread
) return NULL
;
415 return win
->thread
->process
;
418 /* attempt to close the desktop window when the last process using it is gone */
419 void close_desktop_window( struct desktop
*desktop
)
421 struct window
*win
= desktop
->top_window
;
422 if (win
&& win
->thread
) post_message( win
->handle
, WM_CLOSE
, 0, 0 );
425 /* create a new window structure (note: the window is not linked in the window tree) */
426 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
427 atom_t atom
, void *instance
)
429 static const rectangle_t empty_rect
;
431 struct window
*win
= NULL
;
432 struct desktop
*desktop
;
433 struct window_class
*class;
435 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
437 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
439 release_object( desktop
);
443 if (!parent
) /* null parent is only allowed for desktop or HWND_MESSAGE top window */
445 if (is_desktop_class( class ))
446 parent
= desktop
->top_window
; /* use existing desktop if any */
447 else if (is_hwnd_message_class( class ))
448 /* use desktop window if message window is already created */
449 parent
= desktop
->msg_window
? desktop
->top_window
: NULL
;
450 else if (!(parent
= desktop
->top_window
)) /* must already have a desktop then */
452 set_error( STATUS_ACCESS_DENIED
);
457 /* parent must be on the same desktop */
458 if (parent
&& parent
->desktop
!= desktop
)
460 set_error( STATUS_ACCESS_DENIED
);
464 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
465 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
467 win
->parent
= parent
;
468 win
->owner
= owner
? owner
->handle
: 0;
469 win
->thread
= current
;
470 win
->desktop
= desktop
;
473 win
->last_active
= win
->handle
;
474 win
->win_region
= NULL
;
475 win
->update_region
= NULL
;
479 win
->instance
= NULL
;
484 win
->paint_flags
= 0;
487 win
->properties
= NULL
;
488 win
->nb_extra_bytes
= extra_bytes
;
489 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
490 memset( win
->extra_bytes
, 0, extra_bytes
);
491 list_init( &win
->children
);
492 list_init( &win
->unlinked
);
494 /* if parent belongs to a different thread and the window isn't */
495 /* top-level, attach the two threads */
496 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
498 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
500 else /* otherwise just make sure that the thread has a message queue */
502 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
505 /* put it on parent unlinked list */
506 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
509 list_init( &win
->entry
);
510 if (is_desktop_class( class ))
512 assert( !desktop
->top_window
);
513 desktop
->top_window
= win
;
514 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
518 assert( !desktop
->msg_window
);
519 desktop
->msg_window
= win
;
523 current
->desktop_users
++;
529 if (win
->handle
) free_user_handle( win
->handle
);
532 release_object( desktop
);
533 release_class( class );
537 /* destroy all windows belonging to a given thread */
538 void destroy_thread_windows( struct thread
*thread
)
540 user_handle_t handle
= 0;
543 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
545 if (win
->thread
!= thread
) continue;
546 if (is_desktop_window( win
)) detach_window_thread( win
);
547 else destroy_window( win
);
551 /* get the desktop window */
552 static struct window
*get_desktop_window( struct thread
*thread
)
554 struct window
*top_window
;
555 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
557 if (!desktop
) return NULL
;
558 top_window
= desktop
->top_window
;
559 release_object( desktop
);
563 /* check whether child is a descendant of parent */
564 int is_child_window( user_handle_t parent
, user_handle_t child
)
566 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
567 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
569 if (!child_ptr
|| !parent_ptr
) return 0;
570 while (child_ptr
->parent
)
572 if (child_ptr
->parent
== parent_ptr
) return 1;
573 child_ptr
= child_ptr
->parent
;
578 /* check whether window is a top-level window */
579 int is_top_level_window( user_handle_t window
)
581 struct window
*win
= get_user_object( window
, USER_WINDOW
);
582 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
585 /* make a window active if possible */
586 int make_window_active( user_handle_t window
)
588 struct window
*owner
, *win
= get_window( window
);
592 /* set last active for window and its owner */
593 win
->last_active
= win
->handle
;
594 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
598 /* increment (or decrement) the window paint count */
599 static inline void inc_window_paint_count( struct window
*win
, int incr
)
601 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
604 /* check if window and all its ancestors are visible */
605 static int is_visible( const struct window
*win
)
607 while (win
&& win
->parent
)
609 if (!(win
->style
& WS_VISIBLE
)) return 0;
611 /* if parent is minimized children are not visible */
612 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
617 /* same as is_visible but takes a window handle */
618 int is_window_visible( user_handle_t window
)
620 struct window
*win
= get_user_object( window
, USER_WINDOW
);
622 return is_visible( win
);
625 /* check if point is inside the window */
626 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
628 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
629 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
630 return 0; /* disabled child */
631 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
632 return 0; /* transparent */
633 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
634 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
635 return 0; /* not in window */
636 if (win
->win_region
&&
637 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
638 return 0; /* not in window region */
642 /* find child of 'parent' that contains the given point (in parent-relative coords) */
643 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
647 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
649 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
651 /* if window is minimized or disabled, return at once */
652 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
654 /* if point is not in client area, return at once */
655 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
656 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
659 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
661 return parent
; /* not found any child */
664 /* find all children of 'parent' that contain the given point */
665 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
666 struct user_handle_array
*array
)
670 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
672 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
674 /* if point is in client area, and window is not minimized or disabled, check children */
675 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
676 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
677 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
679 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
680 y
- ptr
->client_rect
.top
, array
))
684 /* now add window to the array */
685 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
690 /* find window containing point (in absolute coords) */
691 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
695 if (!desktop
->top_window
) return 0;
696 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
700 /* return list of all windows containing point (in absolute coords) */
701 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
705 /* make point relative to top window */
706 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
708 x
-= ptr
->client_rect
.left
;
709 y
-= ptr
->client_rect
.top
;
712 if (!is_point_in_window( top
, x
, y
)) return 1;
714 /* if point is in client area, and window is not minimized or disabled, check children */
715 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
716 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
717 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
719 if (!is_desktop_window(top
))
721 x
-= top
->client_rect
.left
;
722 y
-= top
->client_rect
.top
;
724 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
726 /* now add window to the array */
727 if (!add_handle_to_array( array
, top
->handle
)) return 0;
732 /* return the thread owning a window */
733 struct thread
*get_window_thread( user_handle_t handle
)
735 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
736 if (!win
|| !win
->thread
) return NULL
;
737 return (struct thread
*)grab_object( win
->thread
);
741 /* check if any area of a window needs repainting */
742 static inline int win_needs_repaint( struct window
*win
)
744 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
748 /* find a child of the specified window that needs repainting */
749 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
751 struct window
*ptr
, *ret
= NULL
;
753 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
755 if (!(ptr
->style
& WS_VISIBLE
)) continue;
756 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
758 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
759 ret
= find_child_to_repaint( ptr
, thread
);
763 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
765 /* transparent window, check for non-transparent sibling to paint first */
766 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
768 if (!(ptr
->style
& WS_VISIBLE
)) continue;
769 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
770 if (ptr
->thread
!= thread
) continue;
771 if (win_needs_repaint( ptr
)) return ptr
;
778 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
779 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
781 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
);
783 if (!top_window
) return 0;
785 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
786 else win
= find_child_to_repaint( top_window
, thread
);
790 /* check that it is a child of the specified parent */
791 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
792 if (ptr
->handle
== parent
) break;
793 /* otherwise don't return any window, we don't repaint a child before its parent */
794 if (!ptr
) win
= NULL
;
797 win
->paint_flags
&= ~PAINT_INTERNAL
;
802 /* intersect the window region with the specified region, relative to the window parent */
803 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
805 /* make region relative to window rect */
806 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
807 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
808 /* make region relative to parent again */
809 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
814 /* convert coordinates from client to screen coords */
815 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
817 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
819 *x
+= win
->client_rect
.left
;
820 *y
+= win
->client_rect
.top
;
824 /* convert coordinates from client to screen coords */
825 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
827 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
829 rect
->left
+= win
->client_rect
.left
;
830 rect
->right
+= win
->client_rect
.left
;
831 rect
->top
+= win
->client_rect
.top
;
832 rect
->bottom
+= win
->client_rect
.top
;
836 /* map the region from window to screen coordinates */
837 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
839 if (!is_desktop_window(win
))
841 int x
= win
->window_rect
.left
;
842 int y
= win
->window_rect
.top
;
843 client_to_screen( win
->parent
, &x
, &y
);
844 offset_region( region
, x
, y
);
849 /* clip all children of a given window out of the visible region */
850 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
851 struct region
*region
, int offset_x
, int offset_y
)
854 struct region
*tmp
= create_empty_region();
856 if (!tmp
) return NULL
;
857 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
859 if (ptr
== last
) break;
860 if (!(ptr
->style
& WS_VISIBLE
)) continue;
861 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
862 set_region_rect( tmp
, &ptr
->visible_rect
);
863 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
868 offset_region( tmp
, offset_x
, offset_y
);
869 if (!(region
= subtract_region( region
, region
, tmp
))) break;
870 if (is_region_empty( region
)) break;
877 /* compute the intersection of two rectangles; return 0 if the result is empty */
878 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
880 dst
->left
= max( src1
->left
, src2
->left
);
881 dst
->top
= max( src1
->top
, src2
->top
);
882 dst
->right
= min( src1
->right
, src2
->right
);
883 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
884 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
888 /* offset the coordinates of a rectangle */
889 static inline void offset_rect( rectangle_t
*rect
, int offset_x
, int offset_y
)
891 rect
->left
+= offset_x
;
892 rect
->top
+= offset_y
;
893 rect
->right
+= offset_x
;
894 rect
->bottom
+= offset_y
;
898 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
899 static void set_region_client_rect( struct region
*region
, struct window
*win
)
903 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
904 set_region_rect( region
, &rect
);
908 /* get the top-level window to clip against for a given window */
909 static inline struct window
*get_top_clipping_window( struct window
*win
)
911 while (win
->parent
&& !is_desktop_window(win
->parent
)) win
= win
->parent
;
916 /* compute the visible region of a window, in window coordinates */
917 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
919 struct region
*tmp
= NULL
, *region
;
920 int offset_x
, offset_y
;
922 if (!(region
= create_empty_region())) return NULL
;
924 /* first check if all ancestors are visible */
926 if (!is_visible( win
)) return region
; /* empty region */
928 /* create a region relative to the window itself */
930 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
932 set_region_client_rect( region
, win
->parent
);
933 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
935 else if (flags
& DCX_WINDOW
)
937 set_region_rect( region
, &win
->visible_rect
);
938 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
942 set_region_client_rect( region
, win
);
943 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
948 if (flags
& DCX_CLIPCHILDREN
)
950 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
953 offset_x
= win
->client_rect
.left
;
954 offset_y
= win
->client_rect
.top
;
956 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
959 /* clip siblings of ancestors */
961 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
964 offset_x
= win
->window_rect
.left
;
965 offset_y
= win
->window_rect
.top
;
968 if ((tmp
= create_empty_region()) != NULL
)
972 /* we don't clip out top-level siblings as that's up to the native windowing system */
973 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
975 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
976 if (is_region_empty( region
)) break;
978 /* clip to parent client area */
980 if (!is_desktop_window(win
))
982 offset_x
+= win
->client_rect
.left
;
983 offset_y
+= win
->client_rect
.top
;
984 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
986 set_region_client_rect( tmp
, win
);
987 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
988 if (!intersect_region( region
, region
, tmp
)) goto error
;
989 if (is_region_empty( region
)) break;
993 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
997 if (tmp
) free_region( tmp
);
998 free_region( region
);
1003 /* get the window class of a window */
1004 struct window_class
* get_window_class( user_handle_t window
)
1007 if (!(win
= get_window( window
))) return NULL
;
1008 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1012 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1013 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1014 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1016 int offset_x
= 0, offset_y
= 0;
1018 if (!(win
->style
& WS_VISIBLE
)) return 0;
1020 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1021 if (!is_desktop_window(win
))
1023 offset_x
= win
->window_rect
.left
;
1024 offset_y
= win
->window_rect
.top
;
1030 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1031 if (!is_desktop_window(win
))
1033 offset_x
+= win
->client_rect
.left
;
1034 offset_y
+= win
->client_rect
.top
;
1035 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1037 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1038 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1040 offset_rect( rect
, -offset_x
, -offset_y
);
1044 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1045 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1046 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1051 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1052 if (!(tmp
= create_empty_region())) return NULL
;
1053 set_region_rect( tmp
, &rect
);
1057 /* map it to client coords */
1058 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1059 win
->window_rect
.top
- win
->client_rect
.top
);
1061 /* intersect specified region with bounding rect */
1062 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1063 if (is_region_empty( tmp
)) goto done
;
1065 /* map it back to window coords */
1066 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1067 win
->client_rect
.top
- win
->window_rect
.top
);
1077 /* set a region as new update region for the window */
1078 static void set_update_region( struct window
*win
, struct region
*region
)
1080 if (region
&& !is_region_empty( region
))
1082 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1083 else free_region( win
->update_region
);
1084 win
->update_region
= region
;
1088 if (win
->update_region
)
1090 inc_window_paint_count( win
, -1 );
1091 free_region( win
->update_region
);
1093 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1094 win
->update_region
= NULL
;
1095 if (region
) free_region( region
);
1100 /* add a region to the update region; the passed region is freed or reused */
1101 static int add_update_region( struct window
*win
, struct region
*region
)
1103 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1105 free_region( region
);
1108 set_update_region( win
, region
);
1113 /* crop the update region of children to the specified rectangle, in client coords */
1114 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1116 struct window
*child
;
1118 rectangle_t child_rect
;
1120 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1122 if (!(child
->style
& WS_VISIBLE
)) continue;
1123 if (!rect
) /* crop everything out */
1125 crop_children_update_region( child
, NULL
);
1126 set_update_region( child
, NULL
);
1130 /* nothing to do if child is completely inside rect */
1131 if (child
->window_rect
.left
>= rect
->left
&&
1132 child
->window_rect
.top
>= rect
->top
&&
1133 child
->window_rect
.right
<= rect
->right
&&
1134 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1136 /* map to child client coords and crop grand-children */
1138 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1139 crop_children_update_region( child
, &child_rect
);
1141 /* now crop the child itself */
1142 if (!child
->update_region
) continue;
1143 if (!(tmp
= create_empty_region())) continue;
1144 set_region_rect( tmp
, rect
);
1145 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1146 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1147 else free_region( tmp
);
1152 /* validate the non client area of a window */
1153 static void validate_non_client( struct window
*win
)
1158 if (!win
->update_region
) return; /* nothing to do */
1160 /* get client rect in window coords */
1161 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1162 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1163 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1164 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1166 if ((tmp
= create_empty_region()))
1168 set_region_rect( tmp
, &rect
);
1169 if (intersect_region( tmp
, win
->update_region
, tmp
))
1170 set_update_region( win
, tmp
);
1174 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1178 /* validate a window completely so that we don't get any further paint messages for it */
1179 static void validate_whole_window( struct window
*win
)
1181 set_update_region( win
, NULL
);
1183 if (win
->paint_flags
& PAINT_INTERNAL
)
1185 win
->paint_flags
&= ~PAINT_INTERNAL
;
1186 inc_window_paint_count( win
, -1 );
1191 /* validate a window's children so that we don't get any further paint messages for it */
1192 static void validate_children( struct window
*win
)
1194 struct window
*child
;
1196 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1198 if (!(child
->style
& WS_VISIBLE
)) continue;
1199 validate_children(child
);
1200 validate_whole_window(child
);
1205 /* validate the update region of a window on all parents; helper for get_update_region */
1206 static void validate_parents( struct window
*child
)
1208 int offset_x
= 0, offset_y
= 0;
1209 struct window
*win
= child
;
1210 struct region
*tmp
= NULL
;
1212 if (!child
->update_region
) return;
1216 /* map to parent client coords */
1217 offset_x
+= win
->window_rect
.left
;
1218 offset_y
+= win
->window_rect
.top
;
1222 /* and now map to window coords */
1223 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1224 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1226 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1228 if (!tmp
&& !(tmp
= create_empty_region())) return;
1229 offset_region( child
->update_region
, offset_x
, offset_y
);
1230 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1232 set_update_region( win
, tmp
);
1235 /* restore child coords */
1236 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1239 if (tmp
) free_region( tmp
);
1243 /* add/subtract a region (in client coordinates) to the update region of the window */
1244 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1247 struct window
*child
;
1249 if (flags
& RDW_INVALIDATE
)
1251 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1253 if (!add_update_region( win
, tmp
)) return;
1255 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1256 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1258 else if (flags
& RDW_VALIDATE
)
1260 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1262 set_update_region( win
, NULL
);
1264 else if (win
->update_region
)
1266 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1268 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1273 set_update_region( win
, tmp
);
1275 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1276 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1280 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1282 win
->paint_flags
|= PAINT_INTERNAL
;
1283 inc_window_paint_count( win
, 1 );
1285 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1287 win
->paint_flags
&= ~PAINT_INTERNAL
;
1288 inc_window_paint_count( win
, -1 );
1291 /* now process children recursively */
1293 if (flags
& RDW_NOCHILDREN
) return;
1294 if (win
->style
& WS_MINIMIZE
) return;
1295 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1297 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1299 /* map to client coordinates */
1300 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1301 win
->window_rect
.top
- win
->client_rect
.top
);
1303 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1305 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1307 if (!(child
->style
& WS_VISIBLE
)) continue;
1308 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1309 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1310 redraw_window( child
, tmp
, 1, flags
);
1311 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1317 /* retrieve the update flags for a window depending on the state of the update region */
1318 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1320 unsigned int ret
= 0;
1322 if (flags
& UPDATE_NONCLIENT
)
1324 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1326 if (flags
& UPDATE_ERASE
)
1328 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1330 if (flags
& UPDATE_PAINT
)
1332 if (win
->update_region
)
1334 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1335 ret
|= UPDATE_PAINT
;
1338 if (flags
& UPDATE_INTERNALPAINT
)
1340 if (win
->paint_flags
& PAINT_INTERNAL
)
1342 ret
|= UPDATE_INTERNALPAINT
;
1343 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1350 /* iterate through the children of the given window until we find one with some update flags */
1351 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1352 unsigned int flags
, struct window
**child
)
1355 unsigned int ret
= 0;
1357 /* first make sure we want to iterate children at all */
1359 if (win
->style
& WS_MINIMIZE
) return 0;
1361 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1362 * here we only want to repaint children of windows that clip them, others
1363 * need to wait for WM_PAINT to be done in the parent first.
1365 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1367 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1369 if (from_child
) /* skip all children until from_child is found */
1371 if (ptr
== from_child
) from_child
= NULL
;
1374 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1375 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1380 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1385 /* iterate through children and siblings of the given window until we find one with some update flags */
1386 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1387 unsigned int flags
, struct window
**child
)
1390 struct window
*ptr
, *from_sibling
= NULL
;
1392 /* if some parent is not visible start from the next sibling */
1394 if (!is_visible( win
)) return 0;
1395 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1397 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1398 if (ptr
== win
) break;
1401 /* non-client painting must be delayed if one of the parents is going to
1402 * be repainted and doesn't clip children */
1404 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1406 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1408 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1411 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1413 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1415 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1416 if (ptr
== win
) break;
1422 /* check window itself (only if not restarting from a child) */
1426 if ((ret
= get_update_flags( win
, flags
)))
1434 /* now check children */
1436 if (flags
& UPDATE_NOCHILDREN
) return 0;
1439 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1440 from_sibling
= from_child
;
1443 /* then check siblings and parent siblings */
1445 while (from_sibling
->parent
&& from_sibling
!= win
)
1447 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1449 from_sibling
= from_sibling
->parent
;
1455 /* expose the areas revealed by a vis region change on the window parent */
1456 /* returns the region exposed on the window itself (in client coordinates) */
1457 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1458 struct region
*old_vis_rgn
)
1460 struct region
*new_vis_rgn
, *exposed_rgn
;
1462 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1464 if ((exposed_rgn
= create_empty_region()))
1466 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1468 /* make it relative to the new client area */
1469 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1470 win
->window_rect
.top
- win
->client_rect
.top
);
1474 free_region( exposed_rgn
);
1481 /* make it relative to the old window pos for subtracting */
1482 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1483 win
->window_rect
.top
- old_window_rect
->top
);
1485 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1486 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1487 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1489 if (!is_region_empty( new_vis_rgn
))
1491 /* make it relative to parent */
1492 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1493 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1497 free_region( new_vis_rgn
);
1502 /* set the window and client rectangles, updating the update region if necessary */
1503 static void set_window_pos( struct window
*win
, struct window
*previous
,
1504 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1505 const rectangle_t
*client_rect
, const rectangle_t
*valid_rects
)
1507 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1508 const rectangle_t old_window_rect
= win
->window_rect
;
1509 const rectangle_t old_client_rect
= win
->client_rect
;
1511 int client_changed
, frame_changed
;
1512 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1514 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1516 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1518 /* set the new window info before invalidating anything */
1520 win
->window_rect
= *window_rect
;
1521 win
->client_rect
= *client_rect
;
1522 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1523 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1524 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1526 /* assume the visible rect stays at the same offset from the window rect */
1527 win
->visible_rect
.left
+= window_rect
->left
- old_window_rect
.left
;
1528 win
->visible_rect
.top
+= window_rect
->top
- old_window_rect
.top
;
1529 win
->visible_rect
.right
+= window_rect
->right
- old_window_rect
.right
;
1530 win
->visible_rect
.bottom
+= window_rect
->bottom
- old_window_rect
.bottom
;
1531 /* but don't make it smaller than the client rect */
1532 if (win
->visible_rect
.left
> client_rect
->left
)
1533 win
->visible_rect
.left
= max( window_rect
->left
, client_rect
->left
);
1534 if (win
->visible_rect
.top
> client_rect
->top
)
1535 win
->visible_rect
.top
= max( window_rect
->top
, client_rect
->top
);
1536 if (win
->visible_rect
.right
< client_rect
->right
)
1537 win
->visible_rect
.right
= min( window_rect
->right
, client_rect
->right
);
1538 if (win
->visible_rect
.bottom
< client_rect
->bottom
)
1539 win
->visible_rect
.bottom
= min( window_rect
->bottom
, client_rect
->bottom
);
1541 /* if the window is not visible, everything is easy */
1542 if (!visible
) return;
1544 /* expose anything revealed by the change */
1546 if (!(swp_flags
& SWP_NOREDRAW
))
1547 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1549 if (!(win
->style
& WS_VISIBLE
))
1551 /* clear the update region since the window is no longer visible */
1552 validate_whole_window( win
);
1553 validate_children( win
);
1557 /* crop update region to the new window rect */
1559 if (win
->update_region
)
1561 if (get_window_visible_rect( win
, &rect
, 1 ))
1563 struct region
*tmp
= create_empty_region();
1566 set_region_rect( tmp
, &rect
);
1567 if (intersect_region( tmp
, win
->update_region
, tmp
))
1568 set_update_region( win
, tmp
);
1573 else set_update_region( win
, NULL
); /* visible rect is empty */
1576 /* crop children regions to the new window rect */
1578 if (get_window_visible_rect( win
, &rect
, 0 ))
1580 /* map to client coords */
1581 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1582 win
->window_rect
.top
- win
->client_rect
.top
);
1583 crop_children_update_region( win
, &rect
);
1585 else crop_children_update_region( win
, NULL
);
1587 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1589 /* expose the whole non-client area if it changed in any way */
1591 if (swp_flags
& SWP_NOCOPYBITS
)
1593 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1594 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ));
1595 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1599 /* assume the bits have been moved to follow the window rect */
1600 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1601 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1602 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1603 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1604 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
);
1605 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1606 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1607 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1608 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1610 memcmp( &valid_rects
[0], client_rect
, sizeof(*client_rect
) ));
1613 if (frame_changed
|| client_changed
)
1615 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1617 set_region_rect( win_rgn
, window_rect
);
1620 /* subtract the valid portion of client rect from the total region */
1621 struct region
*tmp
= create_empty_region();
1624 set_region_rect( tmp
, &valid_rects
[0] );
1625 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1626 else free_region( tmp
);
1629 if (!is_desktop_window(win
))
1630 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1633 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1634 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1638 exposed_rgn
= win_rgn
;
1639 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1644 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1647 if (old_vis_rgn
) free_region( old_vis_rgn
);
1648 if (exposed_rgn
) free_region( exposed_rgn
);
1649 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1652 /* set the window visible rect */
1653 static void set_window_visible_rect( struct window
*win
, const rectangle_t
*visible_rect
,
1654 unsigned int swp_flags
)
1656 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1657 const rectangle_t old_visible_rect
= win
->visible_rect
;
1659 if (!memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) )) return;
1661 /* if the window is not visible, everything is easy */
1662 if (!is_visible( win
) || (swp_flags
& SWP_NOREDRAW
))
1664 win
->visible_rect
= *visible_rect
;
1668 if (!(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1669 win
->visible_rect
= *visible_rect
;
1671 /* expose anything revealed by the change */
1673 exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
);
1676 /* subtract the client rect from the total window rect */
1677 set_region_rect( exposed_rgn
, &win
->window_rect
);
1678 set_region_rect( old_vis_rgn
, &win
->client_rect
);
1679 if (subtract_region( exposed_rgn
, exposed_rgn
, old_vis_rgn
))
1681 if (!is_desktop_window(win
))
1682 offset_region( exposed_rgn
, -win
->client_rect
.left
, -win
->client_rect
.top
);
1683 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_FRAME
| RDW_NOCHILDREN
);
1685 free_region( exposed_rgn
);
1687 free_region( old_vis_rgn
);
1688 clear_error(); /* we ignore out of memory errors once the new rect has been set */
1692 /* set the window region, updating the update region if necessary */
1693 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1695 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1697 /* no need to redraw if window is not visible */
1698 if (redraw
&& !is_visible( win
)) redraw
= 0;
1700 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1702 if (win
->win_region
) free_region( win
->win_region
);
1703 win
->win_region
= region
;
1705 /* expose anything revealed by the change */
1706 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1708 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1709 free_region( exposed_rgn
);
1712 if (old_vis_rgn
) free_region( old_vis_rgn
);
1713 clear_error(); /* we ignore out of memory errors since the region has been set */
1717 /* create a window */
1718 DECL_HANDLER(create_window
)
1720 struct window
*win
, *parent
= NULL
, *owner
= NULL
;
1721 struct unicode_str cls_name
;
1725 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1729 if (!(owner
= get_window( req
->owner
))) return;
1730 if (is_desktop_window(owner
)) owner
= NULL
;
1731 else if (parent
&& !is_desktop_window(parent
))
1733 /* an owned window must be created as top-level */
1734 set_error( STATUS_ACCESS_DENIED
);
1737 else /* owner must be a top-level window */
1738 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1741 get_req_unicode_str( &cls_name
);
1742 atom
= cls_name
.len
? find_global_atom( NULL
, &cls_name
) : req
->atom
;
1744 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1746 reply
->handle
= win
->handle
;
1747 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1748 reply
->owner
= win
->owner
;
1749 reply
->extra
= win
->nb_extra_bytes
;
1750 reply
->class_ptr
= get_class_client_ptr( win
->class );
1754 /* set the parent of a window */
1755 DECL_HANDLER(set_parent
)
1757 struct window
*win
, *parent
= NULL
;
1759 if (!(win
= get_window( req
->handle
))) return;
1760 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1762 if (is_desktop_window(win
))
1764 set_error( STATUS_INVALID_PARAMETER
);
1767 reply
->old_parent
= win
->parent
->handle
;
1768 reply
->full_parent
= parent
? parent
->handle
: 0;
1769 set_parent_window( win
, parent
);
1773 /* destroy a window */
1774 DECL_HANDLER(destroy_window
)
1776 struct window
*win
= get_window( req
->handle
);
1779 if (!is_desktop_window(win
)) destroy_window( win
);
1780 else if (win
->thread
== current
) detach_window_thread( win
);
1781 else set_error( STATUS_ACCESS_DENIED
);
1786 /* retrieve the desktop window for the current thread */
1787 DECL_HANDLER(get_desktop_window
)
1789 struct desktop
*desktop
= get_thread_desktop( current
, 0 );
1791 if (!desktop
) return;
1793 if (!desktop
->top_window
&& req
->force
) /* create it */
1795 if ((desktop
->top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
1797 detach_window_thread( desktop
->top_window
);
1798 desktop
->top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1802 if (!desktop
->msg_window
&& req
->force
) /* create it */
1804 static const WCHAR messageW
[] = {'M','e','s','s','a','g','e'};
1805 static const struct unicode_str name
= { messageW
, sizeof(messageW
) };
1806 atom_t atom
= add_global_atom( NULL
, &name
);
1807 if (atom
&& (desktop
->msg_window
= create_window( NULL
, NULL
, atom
, 0 )))
1809 detach_window_thread( desktop
->msg_window
);
1810 desktop
->msg_window
->style
= WS_POPUP
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1814 reply
->top_window
= desktop
->top_window
? desktop
->top_window
->handle
: 0;
1815 reply
->msg_window
= desktop
->msg_window
? desktop
->msg_window
->handle
: 0;
1816 release_object( desktop
);
1820 /* set a window owner */
1821 DECL_HANDLER(set_window_owner
)
1823 struct window
*win
= get_window( req
->handle
);
1824 struct window
*owner
= NULL
;
1827 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1828 if (is_desktop_window(win
))
1830 set_error( STATUS_ACCESS_DENIED
);
1833 reply
->prev_owner
= win
->owner
;
1834 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1838 /* get information from a window handle */
1839 DECL_HANDLER(get_window_info
)
1841 struct window
*win
= get_window( req
->handle
);
1843 reply
->full_handle
= 0;
1844 reply
->tid
= reply
->pid
= 0;
1847 reply
->full_handle
= win
->handle
;
1848 reply
->last_active
= win
->handle
;
1849 reply
->is_unicode
= win
->is_unicode
;
1850 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1853 reply
->tid
= get_thread_id( win
->thread
);
1854 reply
->pid
= get_process_id( win
->thread
->process
);
1855 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
1861 /* set some information in a window */
1862 DECL_HANDLER(set_window_info
)
1864 struct window
*win
= get_window( req
->handle
);
1867 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
1869 set_error( STATUS_ACCESS_DENIED
);
1872 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1873 req
->extra_offset
< -1 ||
1874 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1876 set_win32_error( ERROR_INVALID_INDEX
);
1879 if (req
->extra_offset
!= -1)
1881 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1883 else if (req
->flags
& SET_WIN_EXTRA
)
1885 set_win32_error( ERROR_INVALID_INDEX
);
1888 reply
->old_style
= win
->style
;
1889 reply
->old_ex_style
= win
->ex_style
;
1890 reply
->old_id
= win
->id
;
1891 reply
->old_instance
= win
->instance
;
1892 reply
->old_user_data
= win
->user_data
;
1893 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1894 if (req
->flags
& SET_WIN_EXSTYLE
)
1896 /* WS_EX_TOPMOST can only be changed for unlinked windows */
1897 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
1898 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
1900 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1901 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1902 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
1903 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1904 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1905 &req
->extra_value
, req
->extra_size
);
1907 /* changing window style triggers a non-client paint */
1908 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1912 /* get a list of the window parents, up to the root of the tree */
1913 DECL_HANDLER(get_window_parents
)
1915 struct window
*ptr
, *win
= get_window( req
->handle
);
1917 user_handle_t
*data
;
1920 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1922 reply
->count
= total
;
1923 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1924 if (len
&& ((data
= set_reply_data_size( len
))))
1926 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1927 *data
++ = ptr
->handle
;
1932 /* get a list of the window children */
1933 DECL_HANDLER(get_window_children
)
1935 struct window
*ptr
, *parent
;
1937 user_handle_t
*data
;
1939 struct unicode_str cls_name
;
1940 atom_t atom
= req
->atom
;
1944 struct desktop
*desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
);
1945 if (!desktop
) return;
1946 parent
= desktop
->top_window
;
1947 release_object( desktop
);
1949 else parent
= get_window( req
->parent
);
1951 if (!parent
) return;
1953 get_req_unicode_str( &cls_name
);
1954 if (cls_name
.len
&& !(atom
= find_global_atom( NULL
, &cls_name
))) return;
1956 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1958 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
1959 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1962 reply
->count
= total
;
1963 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1964 if (len
&& ((data
= set_reply_data_size( len
))))
1966 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1968 if (len
< sizeof(*data
)) break;
1969 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
1970 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1971 *data
++ = ptr
->handle
;
1972 len
-= sizeof(*data
);
1978 /* get a list of the window children that contain a given point */
1979 DECL_HANDLER(get_window_children_from_point
)
1981 struct user_handle_array array
;
1982 struct window
*parent
= get_window( req
->parent
);
1985 if (!parent
) return;
1987 array
.handles
= NULL
;
1990 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1992 reply
->count
= array
.count
;
1993 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1994 if (len
) set_reply_data_ptr( array
.handles
, len
);
1995 else free( array
.handles
);
1999 /* get window tree information from a window handle */
2000 DECL_HANDLER(get_window_tree
)
2002 struct window
*ptr
, *win
= get_window( req
->handle
);
2008 reply
->next_sibling
= 0;
2009 reply
->prev_sibling
= 0;
2010 reply
->first_sibling
= 0;
2011 reply
->last_sibling
= 0;
2012 reply
->first_child
= 0;
2013 reply
->last_child
= 0;
2017 struct window
*parent
= win
->parent
;
2018 reply
->parent
= parent
->handle
;
2019 reply
->owner
= win
->owner
;
2022 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
2023 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
2025 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
2026 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
2028 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2029 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2033 /* set the position and Z order of a window */
2034 DECL_HANDLER(set_window_pos
)
2036 const rectangle_t
*valid_rects
= NULL
;
2037 struct window
*previous
= NULL
;
2038 struct window
*win
= get_window( req
->handle
);
2039 unsigned int flags
= req
->flags
;
2042 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2044 if (!(flags
& SWP_NOZORDER
))
2046 switch ((int)(unsigned long)req
->previous
)
2048 case 0: /* HWND_TOP */
2049 previous
= WINPTR_TOP
;
2051 case 1: /* HWND_BOTTOM */
2052 previous
= WINPTR_BOTTOM
;
2054 case -1: /* HWND_TOPMOST */
2055 previous
= WINPTR_TOPMOST
;
2057 case -2: /* HWND_NOTOPMOST */
2058 previous
= WINPTR_NOTOPMOST
;
2061 if (!(previous
= get_window( req
->previous
))) return;
2062 /* previous must be a sibling */
2063 if (previous
->parent
!= win
->parent
)
2065 set_error( STATUS_INVALID_PARAMETER
);
2070 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2073 /* window rectangle must be ordered properly */
2074 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2076 set_error( STATUS_INVALID_PARAMETER
);
2080 if (get_req_data_size() >= 2 * sizeof(rectangle_t
)) valid_rects
= get_req_data();
2081 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, valid_rects
);
2082 reply
->new_style
= win
->style
;
2083 reply
->new_ex_style
= win
->ex_style
;
2084 reply
->visible
= win
->visible_rect
;
2088 /* set the visible rectangle of a window */
2089 DECL_HANDLER(set_window_visible_rect
)
2091 struct window
*win
= get_window( req
->handle
);
2092 if (win
) set_window_visible_rect( win
, &req
->visible
, req
->flags
);
2096 /* get the window and client rectangles of a window */
2097 DECL_HANDLER(get_window_rectangles
)
2099 struct window
*win
= get_window( req
->handle
);
2103 reply
->window
= win
->window_rect
;
2104 reply
->visible
= win
->visible_rect
;
2105 reply
->client
= win
->client_rect
;
2110 /* get the window text */
2111 DECL_HANDLER(get_window_text
)
2113 struct window
*win
= get_window( req
->handle
);
2115 if (win
&& win
->text
)
2117 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
2118 if (len
> get_reply_max_size()) len
= get_reply_max_size();
2119 set_reply_data( win
->text
, len
);
2124 /* set the window text */
2125 DECL_HANDLER(set_window_text
)
2127 struct window
*win
= get_window( req
->handle
);
2132 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2135 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2136 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2145 /* get the coordinates offset between two windows */
2146 DECL_HANDLER(get_windows_offset
)
2150 reply
->x
= reply
->y
= 0;
2153 if (!(win
= get_window( req
->from
))) return;
2154 while (win
&& !is_desktop_window(win
))
2156 reply
->x
+= win
->client_rect
.left
;
2157 reply
->y
+= win
->client_rect
.top
;
2163 if (!(win
= get_window( req
->to
))) return;
2164 while (win
&& !is_desktop_window(win
))
2166 reply
->x
-= win
->client_rect
.left
;
2167 reply
->y
-= win
->client_rect
.top
;
2174 /* get the visible region of a window */
2175 DECL_HANDLER(get_visible_region
)
2177 struct region
*region
;
2178 struct window
*top
, *win
= get_window( req
->window
);
2182 top
= get_top_clipping_window( win
);
2183 if ((region
= get_visible_region( win
, req
->flags
)))
2186 map_win_region_to_screen( win
, region
);
2187 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2188 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2190 reply
->top_win
= top
->handle
;
2191 reply
->top_rect
= (top
== win
&& (req
->flags
& DCX_WINDOW
)) ? top
->visible_rect
: top
->client_rect
;
2193 if (!is_desktop_window(win
))
2195 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2196 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2197 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2201 reply
->win_rect
.left
= 0;
2202 reply
->win_rect
.top
= 0;
2203 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2204 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2209 /* get the window region */
2210 DECL_HANDLER(get_window_region
)
2212 struct window
*win
= get_window( req
->window
);
2216 if (win
->win_region
)
2218 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2219 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2224 /* set the window region */
2225 DECL_HANDLER(set_window_region
)
2227 struct region
*region
= NULL
;
2228 struct window
*win
= get_window( req
->window
);
2232 if (get_req_data_size()) /* no data means remove the region completely */
2234 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2237 set_window_region( win
, region
, req
->redraw
);
2241 /* get a window update region */
2242 DECL_HANDLER(get_update_region
)
2245 unsigned int flags
= req
->flags
;
2246 struct window
*from_child
= NULL
;
2247 struct window
*win
= get_window( req
->window
);
2252 if (req
->from_child
)
2256 if (!(from_child
= get_window( req
->from_child
))) return;
2258 /* make sure from_child is a child of win */
2260 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2263 set_error( STATUS_INVALID_PARAMETER
);
2268 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2270 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2271 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2274 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2275 reply
->child
= win
->handle
;
2277 if (flags
& UPDATE_NOREGION
) return;
2279 if (win
->update_region
)
2281 /* convert update region to screen coordinates */
2282 struct region
*region
= create_empty_region();
2284 if (!region
) return;
2285 if (!copy_region( region
, win
->update_region
))
2287 free_region( region
);
2290 map_win_region_to_screen( win
, region
);
2291 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2292 &reply
->total_size
))) return;
2293 set_reply_data_ptr( data
, reply
->total_size
);
2296 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2298 validate_parents( win
);
2299 validate_whole_window( win
);
2303 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2304 if (reply
->flags
& UPDATE_ERASE
)
2306 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2307 /* desktop window only gets erased, not repainted */
2308 if (is_desktop_window(win
)) validate_whole_window( win
);
2314 /* update the z order of a window so that a given rectangle is fully visible */
2315 DECL_HANDLER(update_window_zorder
)
2318 struct window
*ptr
, *win
= get_window( req
->window
);
2320 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2322 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2324 if (ptr
== win
) break;
2325 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2326 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2327 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
2328 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
2329 /* found a window obscuring the rectangle, now move win above this one */
2330 /* making sure to not violate the topmost rule */
2331 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2333 list_remove( &win
->entry
);
2334 list_add_before( &ptr
->entry
, &win
->entry
);
2341 /* mark parts of a window as needing a redraw */
2342 DECL_HANDLER(redraw_window
)
2344 struct region
*region
= NULL
;
2345 struct window
*win
= get_window( req
->window
);
2348 if (!is_visible( win
)) return; /* nothing to do */
2350 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2352 if (get_req_data_size()) /* no data means whole rectangle */
2354 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2359 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2361 if (region
) free_region( region
);
2365 /* set a window property */
2366 DECL_HANDLER(set_window_property
)
2368 struct unicode_str name
;
2369 struct window
*win
= get_window( req
->window
);
2373 get_req_unicode_str( &name
);
2376 atom_t atom
= add_global_atom( NULL
, &name
);
2379 set_property( win
, atom
, req
->handle
, PROP_TYPE_STRING
);
2380 release_global_atom( NULL
, atom
);
2383 else set_property( win
, req
->atom
, req
->handle
, PROP_TYPE_ATOM
);
2387 /* remove a window property */
2388 DECL_HANDLER(remove_window_property
)
2390 struct unicode_str name
;
2391 struct window
*win
= get_window( req
->window
);
2393 get_req_unicode_str( &name
);
2396 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2397 if (atom
) reply
->handle
= remove_property( win
, atom
);
2402 /* get a window property */
2403 DECL_HANDLER(get_window_property
)
2405 struct unicode_str name
;
2406 struct window
*win
= get_window( req
->window
);
2408 get_req_unicode_str( &name
);
2411 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2412 if (atom
) reply
->handle
= get_property( win
, atom
);
2417 /* get the list of properties of a window */
2418 DECL_HANDLER(get_window_properties
)
2420 property_data_t
*data
;
2421 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2422 struct window
*win
= get_window( req
->window
);
2427 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2428 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2429 reply
->total
= count
;
2431 if (count
> max
) count
= max
;
2432 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2434 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2436 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2437 data
->atom
= win
->properties
[i
].atom
;
2438 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2439 data
->handle
= win
->properties
[i
].handle
;
2446 /* get the new window pointer for a global window, checking permissions */
2447 /* helper for set_global_windows request */
2448 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2457 set_error( STATUS_ACCESS_DENIED
);
2460 *win
= get_window( handle
);
2461 return (*win
!= NULL
);
2464 /* Set/get the global windows */
2465 DECL_HANDLER(set_global_windows
)
2467 struct window
*new_shell_window
= shell_window
;
2468 struct window
*new_shell_listview
= shell_listview
;
2469 struct window
*new_progman_window
= progman_window
;
2470 struct window
*new_taskman_window
= taskman_window
;
2472 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2473 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2474 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2475 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2477 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2479 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2480 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2482 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2484 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2486 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2488 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2490 shell_window
= new_shell_window
;
2491 shell_listview
= new_shell_listview
;
2492 progman_window
= new_progman_window
;
2493 taskman_window
= new_taskman_window
;