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 lparam_t data
; /* property data (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 mod_handle_t 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 int is_layered
: 1; /* has layered info been set? */
83 unsigned int color_key
; /* color key for a layered window */
84 unsigned int alpha
; /* alpha value for a layered window */
85 unsigned int layered_flags
; /* flags for a layered window */
86 unsigned int dpi
; /* window DPI or 0 if per-monitor aware */
87 DPI_AWARENESS dpi_awareness
; /* DPI awareness mode */
88 lparam_t user_data
; /* user-specific data */
89 WCHAR
*text
; /* window caption text */
90 unsigned int paint_flags
; /* various painting flags */
91 int prop_inuse
; /* number of in-use window properties */
92 int prop_alloc
; /* number of allocated window properties */
93 struct property
*properties
; /* window properties array */
94 int nb_extra_bytes
; /* number of extra bytes */
95 char extra_bytes
[1]; /* extra bytes storage */
98 /* flags that can be set by the client */
99 #define PAINT_HAS_SURFACE SET_WINPOS_PAINT_SURFACE
100 #define PAINT_HAS_PIXEL_FORMAT SET_WINPOS_PIXEL_FORMAT
101 #define PAINT_CLIENT_FLAGS (PAINT_HAS_SURFACE | PAINT_HAS_PIXEL_FORMAT)
102 /* flags only manipulated by the server */
103 #define PAINT_INTERNAL 0x0010 /* internal WM_PAINT pending */
104 #define PAINT_ERASE 0x0020 /* needs WM_ERASEBKGND */
105 #define PAINT_NONCLIENT 0x0040 /* needs WM_NCPAINT */
106 #define PAINT_DELAYED_ERASE 0x0080 /* still needs erase after WM_ERASEBKGND */
107 #define PAINT_PIXEL_FORMAT_CHILD 0x0100 /* at least one child has a custom pixel format */
109 /* growable array of user handles */
110 struct user_handle_array
112 user_handle_t
*handles
;
117 static const rectangle_t empty_rect
;
119 /* global window pointers */
120 static struct window
*shell_window
;
121 static struct window
*shell_listview
;
122 static struct window
*progman_window
;
123 static struct window
*taskman_window
;
125 /* magic HWND_TOP etc. pointers */
126 #define WINPTR_TOP ((struct window *)1L)
127 #define WINPTR_BOTTOM ((struct window *)2L)
128 #define WINPTR_TOPMOST ((struct window *)3L)
129 #define WINPTR_NOTOPMOST ((struct window *)4L)
131 /* retrieve a pointer to a window from its handle */
132 static inline struct window
*get_window( user_handle_t handle
)
134 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
135 if (!ret
) set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
139 /* check if window is the desktop */
140 static inline int is_desktop_window( const struct window
*win
)
142 return !win
->parent
; /* only desktop windows have no parent */
145 /* get next window in Z-order list */
146 static inline struct window
*get_next_window( struct window
*win
)
148 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
149 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
152 /* get previous window in Z-order list */
153 static inline struct window
*get_prev_window( struct window
*win
)
155 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
156 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
159 /* get first child in Z-order list */
160 static inline struct window
*get_first_child( struct window
*win
)
162 struct list
*ptr
= list_head( &win
->children
);
163 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
166 /* get last child in Z-order list */
167 static inline struct window
*get_last_child( struct window
*win
)
169 struct list
*ptr
= list_tail( &win
->children
);
170 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
173 /* set the PAINT_PIXEL_FORMAT_CHILD flag on all the parents */
174 /* note: we never reset the flag, it's just a heuristic */
175 static inline void update_pixel_format_flags( struct window
*win
)
177 for (win
= win
->parent
; win
&& win
->parent
; win
= win
->parent
)
178 win
->paint_flags
|= PAINT_PIXEL_FORMAT_CHILD
;
181 /* get the per-monitor DPI for a window */
182 static unsigned int get_monitor_dpi( struct window
*win
)
184 /* FIXME: we return the desktop window DPI for now */
185 while (!is_desktop_window( win
)) win
= win
->parent
;
186 return win
->dpi
? win
->dpi
: USER_DEFAULT_SCREEN_DPI
;
189 /* link a window at the right place in the siblings list */
190 static void link_window( struct window
*win
, struct window
*previous
)
192 if (previous
== WINPTR_NOTOPMOST
)
194 if (!(win
->ex_style
& WS_EX_TOPMOST
) && win
->is_linked
) return; /* nothing to do */
195 win
->ex_style
&= ~WS_EX_TOPMOST
;
196 previous
= WINPTR_TOP
; /* fallback to the HWND_TOP case */
199 list_remove( &win
->entry
); /* unlink it from the previous location */
201 if (previous
== WINPTR_BOTTOM
)
203 list_add_tail( &win
->parent
->children
, &win
->entry
);
204 win
->ex_style
&= ~WS_EX_TOPMOST
;
206 else if (previous
== WINPTR_TOPMOST
)
208 list_add_head( &win
->parent
->children
, &win
->entry
);
209 win
->ex_style
|= WS_EX_TOPMOST
;
211 else if (previous
== WINPTR_TOP
)
213 struct list
*entry
= win
->parent
->children
.next
;
214 if (!(win
->ex_style
& WS_EX_TOPMOST
)) /* put it above the first non-topmost window */
216 while (entry
!= &win
->parent
->children
)
218 struct window
*next
= LIST_ENTRY( entry
, struct window
, entry
);
219 if (!(next
->ex_style
& WS_EX_TOPMOST
)) break;
220 if (next
->handle
== win
->owner
) /* keep it above owner */
222 win
->ex_style
|= WS_EX_TOPMOST
;
228 list_add_before( entry
, &win
->entry
);
232 list_add_after( &previous
->entry
, &win
->entry
);
233 if (!(previous
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
&= ~WS_EX_TOPMOST
;
236 struct window
*next
= get_next_window( win
);
237 if (next
&& (next
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
|= WS_EX_TOPMOST
;
244 /* change the parent of a window (or unlink the window if the new parent is NULL) */
245 static int set_parent_window( struct window
*win
, struct window
*parent
)
249 /* make sure parent is not a child of window */
250 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
254 set_error( STATUS_INVALID_PARAMETER
);
261 win
->parent
= parent
;
262 link_window( win
, WINPTR_TOP
);
264 if (!is_desktop_window( parent
))
266 win
->dpi
= parent
->dpi
;
267 win
->dpi_awareness
= parent
->dpi_awareness
;
270 /* if parent belongs to a different thread and the window isn't */
271 /* top-level, attach the two threads */
272 if (parent
->thread
&& parent
->thread
!= win
->thread
&& !is_desktop_window(parent
))
273 attach_thread_input( win
->thread
, parent
->thread
);
275 if (win
->paint_flags
& (PAINT_HAS_PIXEL_FORMAT
| PAINT_PIXEL_FORMAT_CHILD
))
276 update_pixel_format_flags( win
);
278 else /* move it to parent unlinked list */
280 list_remove( &win
->entry
); /* unlink it from the previous location */
281 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
287 /* append a user handle to a handle array */
288 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
290 if (array
->count
>= array
->total
)
292 int new_total
= max( array
->total
* 2, 32 );
293 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
296 free( array
->handles
);
297 set_error( STATUS_NO_MEMORY
);
300 array
->handles
= new_array
;
301 array
->total
= new_total
;
303 array
->handles
[array
->count
++] = handle
;
307 /* set a window property */
308 static void set_property( struct window
*win
, atom_t atom
, lparam_t data
, enum property_type type
)
311 struct property
*new_props
;
313 /* check if it exists already */
314 for (i
= 0; i
< win
->prop_inuse
; i
++)
316 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
321 if (win
->properties
[i
].atom
== atom
)
323 win
->properties
[i
].type
= type
;
324 win
->properties
[i
].data
= data
;
329 /* need to add an entry */
330 if (!grab_global_atom( NULL
, atom
)) return;
334 if (win
->prop_inuse
>= win
->prop_alloc
)
336 /* need to grow the array */
337 if (!(new_props
= realloc( win
->properties
,
338 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
340 set_error( STATUS_NO_MEMORY
);
341 release_global_atom( NULL
, atom
);
344 win
->prop_alloc
+= 16;
345 win
->properties
= new_props
;
347 free
= win
->prop_inuse
++;
349 win
->properties
[free
].atom
= atom
;
350 win
->properties
[free
].type
= type
;
351 win
->properties
[free
].data
= data
;
354 /* remove a window property */
355 static lparam_t
remove_property( struct window
*win
, atom_t atom
)
359 for (i
= 0; i
< win
->prop_inuse
; i
++)
361 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
362 if (win
->properties
[i
].atom
== atom
)
364 release_global_atom( NULL
, atom
);
365 win
->properties
[i
].type
= PROP_TYPE_FREE
;
366 return win
->properties
[i
].data
;
369 /* FIXME: last error? */
373 /* find a window property */
374 static lparam_t
get_property( struct window
*win
, atom_t atom
)
378 for (i
= 0; i
< win
->prop_inuse
; i
++)
380 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
381 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].data
;
383 /* FIXME: last error? */
387 /* destroy all properties of a window */
388 static inline void destroy_properties( struct window
*win
)
392 if (!win
->properties
) return;
393 for (i
= 0; i
< win
->prop_inuse
; i
++)
395 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
396 release_global_atom( NULL
, win
->properties
[i
].atom
);
398 free( win
->properties
);
401 /* detach a window from its owner thread but keep the window around */
402 static void detach_window_thread( struct window
*win
)
404 struct thread
*thread
= win
->thread
;
409 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
410 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
411 queue_cleanup_window( thread
, win
->handle
);
413 assert( thread
->desktop_users
> 0 );
414 thread
->desktop_users
--;
415 release_class( win
->class );
418 /* don't hold a reference to the desktop so that the desktop window can be */
419 /* destroyed when the desktop ref count reaches zero */
420 release_object( win
->desktop
);
424 /* get the process owning the top window of a given desktop */
425 struct process
*get_top_window_owner( struct desktop
*desktop
)
427 struct window
*win
= desktop
->top_window
;
428 if (!win
|| !win
->thread
) return NULL
;
429 return win
->thread
->process
;
432 /* get the top window size of a given desktop */
433 void get_top_window_rectangle( struct desktop
*desktop
, rectangle_t
*rect
)
435 struct window
*win
= desktop
->top_window
;
436 *rect
= win
? win
->window_rect
: empty_rect
;
439 /* post a message to the desktop window */
440 void post_desktop_message( struct desktop
*desktop
, unsigned int message
,
441 lparam_t wparam
, lparam_t lparam
)
443 struct window
*win
= desktop
->top_window
;
444 if (win
&& win
->thread
) post_message( win
->handle
, message
, wparam
, lparam
);
447 /* create a new window structure (note: the window is not linked in the window tree) */
448 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
449 atom_t atom
, mod_handle_t instance
)
452 struct window
*win
= NULL
;
453 struct desktop
*desktop
;
454 struct window_class
*class;
456 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
458 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
460 release_object( desktop
);
464 if (!parent
) /* null parent is only allowed for desktop or HWND_MESSAGE top window */
466 if (is_desktop_class( class ))
467 parent
= desktop
->top_window
; /* use existing desktop if any */
468 else if (is_hwnd_message_class( class ))
469 /* use desktop window if message window is already created */
470 parent
= desktop
->msg_window
? desktop
->top_window
: NULL
;
471 else if (!(parent
= desktop
->top_window
)) /* must already have a desktop then */
473 set_error( STATUS_ACCESS_DENIED
);
478 /* parent must be on the same desktop */
479 if (parent
&& parent
->desktop
!= desktop
)
481 set_error( STATUS_ACCESS_DENIED
);
485 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
486 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
488 win
->parent
= parent
;
489 win
->owner
= owner
? owner
->handle
: 0;
490 win
->thread
= current
;
491 win
->desktop
= desktop
;
494 win
->last_active
= win
->handle
;
495 win
->win_region
= NULL
;
496 win
->update_region
= NULL
;
504 win
->dpi_awareness
= DPI_AWARENESS_PER_MONITOR_AWARE
;
508 win
->paint_flags
= 0;
511 win
->properties
= NULL
;
512 win
->nb_extra_bytes
= extra_bytes
;
513 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
514 memset( win
->extra_bytes
, 0, extra_bytes
);
515 list_init( &win
->children
);
516 list_init( &win
->unlinked
);
518 /* if parent belongs to a different thread and the window isn't */
519 /* top-level, attach the two threads */
520 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
522 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
524 else /* otherwise just make sure that the thread has a message queue */
526 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
529 /* put it on parent unlinked list */
530 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
533 list_init( &win
->entry
);
534 if (is_desktop_class( class ))
536 assert( !desktop
->top_window
);
537 desktop
->top_window
= win
;
538 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
542 assert( !desktop
->msg_window
);
543 desktop
->msg_window
= win
;
547 current
->desktop_users
++;
553 if (win
->handle
) free_user_handle( win
->handle
);
556 release_object( desktop
);
557 release_class( class );
561 /* destroy all windows belonging to a given thread */
562 void destroy_thread_windows( struct thread
*thread
)
564 user_handle_t handle
= 0;
567 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
569 if (win
->thread
!= thread
) continue;
570 if (is_desktop_window( win
)) detach_window_thread( win
);
571 else destroy_window( win
);
575 /* get the desktop window */
576 static struct window
*get_desktop_window( struct thread
*thread
)
578 struct window
*top_window
;
579 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
581 if (!desktop
) return NULL
;
582 top_window
= desktop
->top_window
;
583 release_object( desktop
);
587 /* check whether child is a descendant of parent */
588 int is_child_window( user_handle_t parent
, user_handle_t child
)
590 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
591 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
593 if (!child_ptr
|| !parent_ptr
) return 0;
594 while (child_ptr
->parent
)
596 if (child_ptr
->parent
== parent_ptr
) return 1;
597 child_ptr
= child_ptr
->parent
;
602 /* check if window can be set as foreground window */
603 int is_valid_foreground_window( user_handle_t window
)
605 struct window
*win
= get_user_object( window
, USER_WINDOW
);
606 return win
&& (win
->style
& (WS_POPUP
|WS_CHILD
)) != WS_CHILD
;
609 /* make a window active if possible */
610 int make_window_active( user_handle_t window
)
612 struct window
*owner
, *win
= get_window( window
);
616 /* set last active for window and its owners */
620 owner
->last_active
= win
->handle
;
621 owner
= get_user_object( owner
->owner
, USER_WINDOW
);
626 /* increment (or decrement) the window paint count */
627 static inline void inc_window_paint_count( struct window
*win
, int incr
)
629 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
632 /* check if window and all its ancestors are visible */
633 static int is_visible( const struct window
*win
)
637 if (!(win
->style
& WS_VISIBLE
)) return 0;
639 /* if parent is minimized children are not visible */
640 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
645 /* same as is_visible but takes a window handle */
646 int is_window_visible( user_handle_t window
)
648 struct window
*win
= get_user_object( window
, USER_WINDOW
);
650 return is_visible( win
);
653 int is_window_transparent( user_handle_t window
)
655 struct window
*win
= get_user_object( window
, USER_WINDOW
);
657 return (win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
);
660 /* check if point is inside the window */
661 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
663 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
664 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
665 return 0; /* disabled child */
666 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
667 return 0; /* transparent */
668 if (!point_in_rect( &win
->visible_rect
, x
, y
))
669 return 0; /* not in window */
670 if (win
->win_region
&&
671 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
672 return 0; /* not in window region */
676 /* fill an array with the handles of the children of a specified window */
677 static unsigned int get_children_windows( struct window
*parent
, atom_t atom
, thread_id_t tid
,
678 user_handle_t
*handles
, unsigned int max_count
)
681 unsigned int count
= 0;
683 if (!parent
) return 0;
685 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
687 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
688 if (tid
&& get_thread_id(ptr
->thread
) != tid
) continue;
691 if (count
>= max_count
) break;
692 handles
[count
] = ptr
->handle
;
699 /* find child of 'parent' that contains the given point (in parent-relative coords) */
700 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
704 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
706 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
708 /* if window is minimized or disabled, return at once */
709 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
711 /* if point is not in client area, return at once */
712 if (!point_in_rect( &ptr
->client_rect
, x
, y
)) return ptr
;
714 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
716 return parent
; /* not found any child */
719 /* find all children of 'parent' that contain the given point */
720 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
721 struct user_handle_array
*array
)
725 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
727 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
729 /* if point is in client area, and window is not minimized or disabled, check children */
730 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) && point_in_rect( &ptr
->client_rect
, x
, y
))
732 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
733 y
- ptr
->client_rect
.top
, array
))
737 /* now add window to the array */
738 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
743 /* get handle of root of top-most window containing point */
744 user_handle_t
shallow_window_from_point( struct desktop
*desktop
, int x
, int y
)
748 if (!desktop
->top_window
) return 0;
750 LIST_FOR_EACH_ENTRY( ptr
, &desktop
->top_window
->children
, struct window
, entry
)
752 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
755 return desktop
->top_window
->handle
;
758 /* return thread of top-most window containing point (in absolute coords) */
759 struct thread
*window_thread_from_point( user_handle_t scope
, int x
, int y
)
761 struct window
*win
= get_user_object( scope
, USER_WINDOW
);
764 if (!win
) return NULL
;
766 for (ptr
= win
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
768 x
-= ptr
->client_rect
.left
;
769 y
-= ptr
->client_rect
.top
;
772 ptr
= child_window_from_point( win
, x
, y
);
773 if (!ptr
->thread
) return NULL
;
774 return (struct thread
*)grab_object( ptr
->thread
);
777 /* return list of all windows containing point (in absolute coords) */
778 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
782 /* make point relative to top window */
783 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
785 x
-= ptr
->client_rect
.left
;
786 y
-= ptr
->client_rect
.top
;
789 if (!is_point_in_window( top
, x
, y
)) return 1;
791 /* if point is in client area, and window is not minimized or disabled, check children */
792 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) && point_in_rect( &top
->client_rect
, x
, y
))
794 if (!is_desktop_window(top
))
796 x
-= top
->client_rect
.left
;
797 y
-= top
->client_rect
.top
;
799 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
801 /* now add window to the array */
802 if (!add_handle_to_array( array
, top
->handle
)) return 0;
807 /* return the thread owning a window */
808 struct thread
*get_window_thread( user_handle_t handle
)
810 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
811 if (!win
|| !win
->thread
) return NULL
;
812 return (struct thread
*)grab_object( win
->thread
);
816 /* check if any area of a window needs repainting */
817 static inline int win_needs_repaint( struct window
*win
)
819 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
823 /* find a child of the specified window that needs repainting */
824 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
826 struct window
*ptr
, *ret
= NULL
;
828 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
830 if (!(ptr
->style
& WS_VISIBLE
)) continue;
831 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
833 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
834 ret
= find_child_to_repaint( ptr
, thread
);
838 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
840 /* transparent window, check for non-transparent sibling to paint first */
841 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
843 if (!(ptr
->style
& WS_VISIBLE
)) continue;
844 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
845 if (ptr
->thread
!= thread
) continue;
846 if (win_needs_repaint( ptr
)) return ptr
;
853 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
854 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
856 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
);
858 if (!top_window
) return 0;
860 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
861 else win
= find_child_to_repaint( top_window
, thread
);
865 /* check that it is a child of the specified parent */
866 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
867 if (ptr
->handle
== parent
) break;
868 /* otherwise don't return any window, we don't repaint a child before its parent */
869 if (!ptr
) win
= NULL
;
872 win
->paint_flags
&= ~PAINT_INTERNAL
;
877 /* intersect the window region with the specified region, relative to the window parent */
878 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
880 /* make region relative to window rect */
881 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
882 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
883 /* make region relative to parent again */
884 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
889 /* convert coordinates from client to screen coords */
890 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
892 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
894 *x
+= win
->client_rect
.left
;
895 *y
+= win
->client_rect
.top
;
899 /* convert coordinates from client to screen coords */
900 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
902 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
903 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
906 /* map the region from window to screen coordinates */
907 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
909 if (!is_desktop_window(win
))
911 int x
= win
->window_rect
.left
;
912 int y
= win
->window_rect
.top
;
913 client_to_screen( win
->parent
, &x
, &y
);
914 offset_region( region
, x
, y
);
919 /* clip all children of a given window out of the visible region */
920 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
921 struct region
*region
, int offset_x
, int offset_y
)
924 struct region
*tmp
= create_empty_region();
926 if (!tmp
) return NULL
;
927 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
929 if (ptr
== last
) break;
930 if (!(ptr
->style
& WS_VISIBLE
)) continue;
931 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
932 set_region_rect( tmp
, &ptr
->visible_rect
);
933 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
938 offset_region( tmp
, offset_x
, offset_y
);
939 if (!(region
= subtract_region( region
, region
, tmp
))) break;
940 if (is_region_empty( region
)) break;
947 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
948 static void set_region_client_rect( struct region
*region
, struct window
*win
)
952 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
953 set_region_rect( region
, &rect
);
957 /* get the top-level window to clip against for a given window */
958 static inline struct window
*get_top_clipping_window( struct window
*win
)
960 while (!(win
->paint_flags
& PAINT_HAS_SURFACE
) && win
->parent
&& !is_desktop_window(win
->parent
))
966 /* compute the visible region of a window, in window coordinates */
967 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
969 struct region
*tmp
= NULL
, *region
;
970 int offset_x
, offset_y
;
972 if (!(region
= create_empty_region())) return NULL
;
974 /* first check if all ancestors are visible */
976 if (!is_visible( win
)) return region
; /* empty region */
978 /* create a region relative to the window itself */
980 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
982 set_region_client_rect( region
, win
->parent
);
983 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
985 else if (flags
& DCX_WINDOW
)
987 set_region_rect( region
, &win
->visible_rect
);
988 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
992 set_region_client_rect( region
, win
);
993 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
998 if (flags
& DCX_CLIPCHILDREN
)
1000 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
1003 offset_x
= win
->client_rect
.left
;
1004 offset_y
= win
->client_rect
.top
;
1006 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
1009 /* clip siblings of ancestors */
1011 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
1014 offset_x
= win
->window_rect
.left
;
1015 offset_y
= win
->window_rect
.top
;
1018 if ((tmp
= create_empty_region()) != NULL
)
1022 /* we don't clip out top-level siblings as that's up to the native windowing system */
1023 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
1025 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
1026 if (is_region_empty( region
)) break;
1028 /* clip to parent client area */
1030 if (!is_desktop_window(win
))
1032 offset_x
+= win
->client_rect
.left
;
1033 offset_y
+= win
->client_rect
.top
;
1034 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
1036 set_region_client_rect( tmp
, win
);
1037 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
1038 if (!intersect_region( region
, region
, tmp
)) goto error
;
1039 if (is_region_empty( region
)) break;
1043 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
1047 if (tmp
) free_region( tmp
);
1048 free_region( region
);
1053 /* clip all children with a custom pixel format out of the visible region */
1054 static struct region
*clip_pixel_format_children( struct window
*parent
, struct region
*parent_clip
,
1055 struct region
*region
, int offset_x
, int offset_y
)
1058 struct region
*clip
= create_empty_region();
1060 if (!clip
) return NULL
;
1062 LIST_FOR_EACH_ENTRY_REV( ptr
, &parent
->children
, struct window
, entry
)
1064 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1065 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
1067 /* add the visible rect */
1068 set_region_rect( clip
, &ptr
->visible_rect
);
1069 if (ptr
->win_region
&& !intersect_window_region( clip
, ptr
)) break;
1070 offset_region( clip
, offset_x
, offset_y
);
1071 if (!intersect_region( clip
, clip
, parent_clip
)) break;
1072 if (!union_region( region
, region
, clip
)) break;
1073 if (!(ptr
->paint_flags
& (PAINT_HAS_PIXEL_FORMAT
| PAINT_PIXEL_FORMAT_CHILD
))) continue;
1075 /* subtract the client rect if it uses a custom pixel format */
1076 set_region_rect( clip
, &ptr
->client_rect
);
1077 if (ptr
->win_region
&& !intersect_window_region( clip
, ptr
)) break;
1078 offset_region( clip
, offset_x
, offset_y
);
1079 if (!intersect_region( clip
, clip
, parent_clip
)) break;
1080 if ((ptr
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) && !subtract_region( region
, region
, clip
))
1083 if (!clip_pixel_format_children( ptr
, clip
, region
, offset_x
+ ptr
->client_rect
.left
,
1084 offset_y
+ ptr
->client_rect
.top
))
1087 free_region( clip
);
1092 /* compute the visible surface region of a window, in parent coordinates */
1093 static struct region
*get_surface_region( struct window
*win
)
1095 struct region
*region
, *clip
;
1096 int offset_x
, offset_y
;
1098 /* create a region relative to the window itself */
1100 if (!(region
= create_empty_region())) return NULL
;
1101 if (!(clip
= create_empty_region())) goto error
;
1102 set_region_rect( region
, &win
->visible_rect
);
1103 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
1104 set_region_rect( clip
, &win
->client_rect
);
1105 if (win
->win_region
&& !intersect_window_region( clip
, win
)) goto error
;
1107 if ((win
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) && !subtract_region( region
, region
, clip
))
1112 if (!is_desktop_window(win
))
1114 offset_x
= win
->client_rect
.left
;
1115 offset_y
= win
->client_rect
.top
;
1117 else offset_x
= offset_y
= 0;
1119 if (!clip_pixel_format_children( win
, clip
, region
, offset_x
, offset_y
)) goto error
;
1121 free_region( clip
);
1125 if (clip
) free_region( clip
);
1126 free_region( region
);
1131 /* get the window class of a window */
1132 struct window_class
* get_window_class( user_handle_t window
)
1135 if (!(win
= get_window( window
))) return NULL
;
1136 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1140 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1141 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1142 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1144 int offset_x
= win
->window_rect
.left
, offset_y
= win
->window_rect
.top
;
1146 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1148 if (!(win
->style
& WS_VISIBLE
)) return 0;
1149 if (is_desktop_window( win
)) return 1;
1151 while (!is_desktop_window( win
->parent
))
1154 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1155 offset_x
+= win
->client_rect
.left
;
1156 offset_y
+= win
->client_rect
.top
;
1157 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1158 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1159 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1161 offset_rect( rect
, -offset_x
, -offset_y
);
1165 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1166 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1167 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1172 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1173 if (!(tmp
= create_empty_region())) return NULL
;
1174 set_region_rect( tmp
, &rect
);
1178 /* map it to client coords */
1179 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1180 win
->window_rect
.top
- win
->client_rect
.top
);
1182 /* intersect specified region with bounding rect */
1183 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1184 if (is_region_empty( tmp
)) goto done
;
1186 /* map it back to window coords */
1187 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1188 win
->client_rect
.top
- win
->window_rect
.top
);
1198 /* set a region as new update region for the window */
1199 static void set_update_region( struct window
*win
, struct region
*region
)
1201 if (region
&& !is_region_empty( region
))
1203 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1204 else free_region( win
->update_region
);
1205 win
->update_region
= region
;
1209 if (win
->update_region
)
1211 inc_window_paint_count( win
, -1 );
1212 free_region( win
->update_region
);
1214 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1215 win
->update_region
= NULL
;
1216 if (region
) free_region( region
);
1221 /* add a region to the update region; the passed region is freed or reused */
1222 static int add_update_region( struct window
*win
, struct region
*region
)
1224 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1226 free_region( region
);
1229 set_update_region( win
, region
);
1234 /* crop the update region of children to the specified rectangle, in client coords */
1235 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1237 struct window
*child
;
1239 rectangle_t child_rect
;
1241 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1243 if (!(child
->style
& WS_VISIBLE
)) continue;
1244 if (!rect
) /* crop everything out */
1246 crop_children_update_region( child
, NULL
);
1247 set_update_region( child
, NULL
);
1251 /* nothing to do if child is completely inside rect */
1252 if (child
->window_rect
.left
>= rect
->left
&&
1253 child
->window_rect
.top
>= rect
->top
&&
1254 child
->window_rect
.right
<= rect
->right
&&
1255 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1257 /* map to child client coords and crop grand-children */
1259 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1260 crop_children_update_region( child
, &child_rect
);
1262 /* now crop the child itself */
1263 if (!child
->update_region
) continue;
1264 if (!(tmp
= create_empty_region())) continue;
1265 set_region_rect( tmp
, rect
);
1266 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1267 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1268 else free_region( tmp
);
1273 /* validate the non client area of a window */
1274 static void validate_non_client( struct window
*win
)
1279 if (!win
->update_region
) return; /* nothing to do */
1281 /* get client rect in window coords */
1282 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1283 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1284 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1285 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1287 if ((tmp
= create_empty_region()))
1289 set_region_rect( tmp
, &rect
);
1290 if (intersect_region( tmp
, win
->update_region
, tmp
))
1291 set_update_region( win
, tmp
);
1295 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1299 /* validate a window completely so that we don't get any further paint messages for it */
1300 static void validate_whole_window( struct window
*win
)
1302 set_update_region( win
, NULL
);
1304 if (win
->paint_flags
& PAINT_INTERNAL
)
1306 win
->paint_flags
&= ~PAINT_INTERNAL
;
1307 inc_window_paint_count( win
, -1 );
1312 /* validate a window's children so that we don't get any further paint messages for it */
1313 static void validate_children( struct window
*win
)
1315 struct window
*child
;
1317 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1319 if (!(child
->style
& WS_VISIBLE
)) continue;
1320 validate_children(child
);
1321 validate_whole_window(child
);
1326 /* validate the update region of a window on all parents; helper for get_update_region */
1327 static void validate_parents( struct window
*child
)
1329 int offset_x
= 0, offset_y
= 0;
1330 struct window
*win
= child
;
1331 struct region
*tmp
= NULL
;
1333 if (!child
->update_region
) return;
1337 /* map to parent client coords */
1338 offset_x
+= win
->window_rect
.left
;
1339 offset_y
+= win
->window_rect
.top
;
1343 /* and now map to window coords */
1344 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1345 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1347 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1349 if (!tmp
&& !(tmp
= create_empty_region())) return;
1350 offset_region( child
->update_region
, offset_x
, offset_y
);
1351 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1353 set_update_region( win
, tmp
);
1356 /* restore child coords */
1357 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1360 if (tmp
) free_region( tmp
);
1364 /* add/subtract a region (in client coordinates) to the update region of the window */
1365 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1368 struct window
*child
;
1370 if (flags
& RDW_INVALIDATE
)
1372 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1374 if (!add_update_region( win
, tmp
)) return;
1376 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1377 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1379 else if (flags
& RDW_VALIDATE
)
1381 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1383 set_update_region( win
, NULL
);
1385 else if (win
->update_region
)
1387 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1389 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1394 set_update_region( win
, tmp
);
1396 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1397 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1401 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1403 win
->paint_flags
|= PAINT_INTERNAL
;
1404 inc_window_paint_count( win
, 1 );
1406 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1408 win
->paint_flags
&= ~PAINT_INTERNAL
;
1409 inc_window_paint_count( win
, -1 );
1412 /* now process children recursively */
1414 if (flags
& RDW_NOCHILDREN
) return;
1415 if (win
->style
& WS_MINIMIZE
) return;
1416 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1418 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1420 /* map to client coordinates */
1421 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1422 win
->window_rect
.top
- win
->client_rect
.top
);
1424 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1426 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1428 if (!(child
->style
& WS_VISIBLE
)) continue;
1429 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1430 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1431 redraw_window( child
, tmp
, 1, flags
);
1432 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1438 /* retrieve the update flags for a window depending on the state of the update region */
1439 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1441 unsigned int ret
= 0;
1443 if (flags
& UPDATE_NONCLIENT
)
1445 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1447 if (flags
& UPDATE_ERASE
)
1449 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1451 if (flags
& UPDATE_PAINT
)
1453 if (win
->update_region
)
1455 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1456 ret
|= UPDATE_PAINT
;
1459 if (flags
& UPDATE_INTERNALPAINT
)
1461 if (win
->paint_flags
& PAINT_INTERNAL
)
1463 ret
|= UPDATE_INTERNALPAINT
;
1464 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1471 /* iterate through the children of the given window until we find one with some update flags */
1472 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1473 unsigned int flags
, struct window
**child
)
1476 unsigned int ret
= 0;
1478 /* first make sure we want to iterate children at all */
1480 if (win
->style
& WS_MINIMIZE
) return 0;
1482 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1483 * here we only want to repaint children of windows that clip them, others
1484 * need to wait for WM_PAINT to be done in the parent first.
1486 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1488 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1490 if (from_child
) /* skip all children until from_child is found */
1492 if (ptr
== from_child
) from_child
= NULL
;
1495 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1496 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1501 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1506 /* iterate through children and siblings of the given window until we find one with some update flags */
1507 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1508 unsigned int flags
, struct window
**child
)
1511 struct window
*ptr
, *from_sibling
= NULL
;
1513 /* if some parent is not visible start from the next sibling */
1515 if (!is_visible( win
)) return 0;
1516 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1518 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1519 if (ptr
== win
) break;
1522 /* non-client painting must be delayed if one of the parents is going to
1523 * be repainted and doesn't clip children */
1525 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1527 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1529 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1532 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1534 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1536 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1537 if (ptr
== win
) break;
1543 /* check window itself (only if not restarting from a child) */
1547 if ((ret
= get_update_flags( win
, flags
)))
1555 /* now check children */
1557 if (flags
& UPDATE_NOCHILDREN
) return 0;
1560 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1561 from_sibling
= from_child
;
1564 /* then check siblings and parent siblings */
1566 while (from_sibling
->parent
&& from_sibling
!= win
)
1568 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1570 from_sibling
= from_sibling
->parent
;
1576 /* expose the areas revealed by a vis region change on the window parent */
1577 /* returns the region exposed on the window itself (in client coordinates) */
1578 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1579 struct region
*old_vis_rgn
)
1581 struct region
*new_vis_rgn
, *exposed_rgn
;
1583 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1585 if ((exposed_rgn
= create_empty_region()))
1587 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1589 /* make it relative to the new client area */
1590 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1591 win
->window_rect
.top
- win
->client_rect
.top
);
1595 free_region( exposed_rgn
);
1600 if (win
->parent
&& !is_desktop_window( win
->parent
))
1602 /* make it relative to the old window pos for subtracting */
1603 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1604 win
->window_rect
.top
- old_window_rect
->top
);
1606 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1607 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1608 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1610 if (!is_region_empty( new_vis_rgn
))
1612 /* make it relative to parent */
1613 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1614 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1618 free_region( new_vis_rgn
);
1623 /* set the window and client rectangles, updating the update region if necessary */
1624 static void set_window_pos( struct window
*win
, struct window
*previous
,
1625 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1626 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1627 const rectangle_t
*valid_rect
)
1629 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1630 const rectangle_t old_window_rect
= win
->window_rect
;
1631 const rectangle_t old_visible_rect
= win
->visible_rect
;
1632 const rectangle_t old_client_rect
= win
->client_rect
;
1634 int client_changed
, frame_changed
;
1635 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1637 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1639 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1641 /* set the new window info before invalidating anything */
1643 win
->window_rect
= *window_rect
;
1644 win
->visible_rect
= *visible_rect
;
1645 win
->client_rect
= *client_rect
;
1646 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1647 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1648 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1650 /* keep children at the same position relative to top right corner when the parent is mirrored */
1651 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
1653 struct window
*child
;
1654 int old_size
= old_client_rect
.right
- old_client_rect
.left
;
1655 int new_size
= win
->client_rect
.right
- win
->client_rect
.left
;
1657 if (old_size
!= new_size
) LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1659 offset_rect( &child
->window_rect
, new_size
- old_size
, 0 );
1660 offset_rect( &child
->visible_rect
, new_size
- old_size
, 0 );
1661 offset_rect( &child
->client_rect
, new_size
- old_size
, 0 );
1665 /* reset cursor clip rectangle when the desktop changes size */
1666 if (win
== win
->desktop
->top_window
) win
->desktop
->cursor
.clip
= *window_rect
;
1668 /* if the window is not visible, everything is easy */
1669 if (!visible
) return;
1671 /* expose anything revealed by the change */
1673 if (!(swp_flags
& SWP_NOREDRAW
))
1674 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1676 if (!(win
->style
& WS_VISIBLE
))
1678 /* clear the update region since the window is no longer visible */
1679 validate_whole_window( win
);
1680 validate_children( win
);
1684 /* crop update region to the new window rect */
1686 if (win
->update_region
)
1688 if (get_window_visible_rect( win
, &rect
, 1 ))
1690 struct region
*tmp
= create_empty_region();
1693 set_region_rect( tmp
, &rect
);
1694 if (intersect_region( tmp
, win
->update_region
, tmp
))
1695 set_update_region( win
, tmp
);
1700 else set_update_region( win
, NULL
); /* visible rect is empty */
1703 /* crop children regions to the new window rect */
1705 if (get_window_visible_rect( win
, &rect
, 0 ))
1707 /* map to client coords */
1708 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1709 win
->window_rect
.top
- win
->client_rect
.top
);
1710 crop_children_update_region( win
, &rect
);
1712 else crop_children_update_region( win
, NULL
);
1714 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1716 /* expose the whole non-client area if it changed in any way */
1718 if (swp_flags
& SWP_NOCOPYBITS
)
1720 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1721 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1722 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1723 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1727 /* assume the bits have been moved to follow the window rect */
1728 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1729 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1730 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1731 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1732 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1733 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1734 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1735 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1736 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1737 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1738 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1739 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1740 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1741 !valid_rect
|| memcmp( valid_rect
, client_rect
, sizeof(*client_rect
) ));
1744 if (frame_changed
|| client_changed
)
1746 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1748 set_region_rect( win_rgn
, window_rect
);
1751 /* subtract the valid portion of client rect from the total region */
1752 struct region
*tmp
= create_empty_region();
1755 set_region_rect( tmp
, valid_rect
);
1756 /* subtract update region since invalid parts of the valid rect won't be copied */
1757 if (win
->update_region
)
1759 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1760 subtract_region( tmp
, tmp
, win
->update_region
);
1761 offset_region( tmp
, window_rect
->left
, window_rect
->top
);
1763 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1764 else free_region( tmp
);
1767 if (!is_desktop_window(win
))
1768 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1771 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1772 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1776 exposed_rgn
= win_rgn
;
1777 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1782 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1785 if (old_vis_rgn
) free_region( old_vis_rgn
);
1786 if (exposed_rgn
) free_region( exposed_rgn
);
1787 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1791 /* set the window region, updating the update region if necessary */
1792 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1794 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1796 /* no need to redraw if window is not visible */
1797 if (redraw
&& !is_visible( win
)) redraw
= 0;
1799 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1801 if (win
->win_region
) free_region( win
->win_region
);
1802 win
->win_region
= region
;
1804 /* expose anything revealed by the change */
1805 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1807 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1808 free_region( exposed_rgn
);
1811 if (old_vis_rgn
) free_region( old_vis_rgn
);
1812 clear_error(); /* we ignore out of memory errors since the region has been set */
1816 /* destroy a window */
1817 void destroy_window( struct window
*win
)
1819 /* hide the window */
1820 if (is_visible(win
))
1822 struct region
*vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1823 win
->style
&= ~WS_VISIBLE
;
1826 struct region
*exposed_rgn
= expose_window( win
, &win
->window_rect
, vis_rgn
);
1827 if (exposed_rgn
) free_region( exposed_rgn
);
1828 free_region( vis_rgn
);
1830 validate_whole_window( win
);
1831 validate_children( win
);
1834 /* destroy all children */
1835 while (!list_empty(&win
->children
))
1836 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
1837 while (!list_empty(&win
->unlinked
))
1838 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
1840 /* reset global window pointers, if the corresponding window is destroyed */
1841 if (win
== shell_window
) shell_window
= NULL
;
1842 if (win
== shell_listview
) shell_listview
= NULL
;
1843 if (win
== progman_window
) progman_window
= NULL
;
1844 if (win
== taskman_window
) taskman_window
= NULL
;
1845 free_hotkeys( win
->desktop
, win
->handle
);
1846 cleanup_clipboard_window( win
->desktop
, win
->handle
);
1847 free_user_handle( win
->handle
);
1848 destroy_properties( win
);
1849 list_remove( &win
->entry
);
1850 if (is_desktop_window(win
))
1852 struct desktop
*desktop
= win
->desktop
;
1853 assert( desktop
->top_window
== win
|| desktop
->msg_window
== win
);
1854 if (desktop
->top_window
== win
) desktop
->top_window
= NULL
;
1855 else desktop
->msg_window
= NULL
;
1857 else if (is_desktop_window( win
->parent
))
1859 post_message( win
->parent
->handle
, WM_PARENTNOTIFY
, WM_DESTROY
, win
->handle
);
1862 detach_window_thread( win
);
1863 if (win
->win_region
) free_region( win
->win_region
);
1864 if (win
->update_region
) free_region( win
->update_region
);
1865 if (win
->class) release_class( win
->class );
1867 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
1872 /* create a window */
1873 DECL_HANDLER(create_window
)
1875 struct window
*win
, *parent
= NULL
, *owner
= NULL
;
1876 struct unicode_str cls_name
= get_req_unicode_str();
1880 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1884 if (!(owner
= get_window( req
->owner
))) return;
1885 if (is_desktop_window(owner
)) owner
= NULL
;
1886 else if (parent
&& !is_desktop_window(parent
))
1888 /* an owned window must be created as top-level */
1889 set_error( STATUS_ACCESS_DENIED
);
1892 else /* owner must be a top-level window */
1893 while ((owner
->style
& (WS_POPUP
|WS_CHILD
)) == WS_CHILD
&& !is_desktop_window(owner
->parent
))
1894 owner
= owner
->parent
;
1897 atom
= cls_name
.len
? find_global_atom( NULL
, &cls_name
) : req
->atom
;
1899 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1901 if (parent
&& !is_desktop_window( parent
))
1903 win
->dpi_awareness
= parent
->dpi_awareness
;
1904 win
->dpi
= parent
->dpi
;
1906 else if (!parent
|| req
->awareness
!= DPI_AWARENESS_PER_MONITOR_AWARE
)
1908 win
->dpi_awareness
= req
->awareness
;
1909 win
->dpi
= req
->dpi
;
1912 reply
->handle
= win
->handle
;
1913 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1914 reply
->owner
= win
->owner
;
1915 reply
->extra
= win
->nb_extra_bytes
;
1916 reply
->dpi
= win
->dpi
;
1917 reply
->awareness
= win
->dpi_awareness
;
1918 reply
->class_ptr
= get_class_client_ptr( win
->class );
1922 /* set the parent of a window */
1923 DECL_HANDLER(set_parent
)
1925 struct window
*win
, *parent
= NULL
;
1927 if (!(win
= get_window( req
->handle
))) return;
1928 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1930 if (is_desktop_window(win
))
1932 set_error( STATUS_INVALID_PARAMETER
);
1935 reply
->old_parent
= win
->parent
->handle
;
1936 reply
->full_parent
= parent
? parent
->handle
: 0;
1937 set_parent_window( win
, parent
);
1938 reply
->dpi
= win
->dpi
;
1939 reply
->awareness
= win
->dpi_awareness
;
1943 /* destroy a window */
1944 DECL_HANDLER(destroy_window
)
1946 struct window
*win
= get_window( req
->handle
);
1949 if (!is_desktop_window(win
)) destroy_window( win
);
1950 else if (win
->thread
== current
) detach_window_thread( win
);
1951 else set_error( STATUS_ACCESS_DENIED
);
1956 /* retrieve the desktop window for the current thread */
1957 DECL_HANDLER(get_desktop_window
)
1959 struct desktop
*desktop
= get_thread_desktop( current
, 0 );
1962 if (!desktop
) return;
1964 /* if winstation is invisible, then avoid roundtrip */
1965 force
= req
->force
|| !(desktop
->winstation
->flags
& WSF_VISIBLE
);
1967 if (!desktop
->top_window
&& force
) /* create it */
1969 if ((desktop
->top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
1971 detach_window_thread( desktop
->top_window
);
1972 desktop
->top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1976 if (!desktop
->msg_window
&& force
) /* create it */
1978 static const WCHAR messageW
[] = {'M','e','s','s','a','g','e'};
1979 static const struct unicode_str name
= { messageW
, sizeof(messageW
) };
1980 atom_t atom
= add_global_atom( NULL
, &name
);
1981 if (atom
&& (desktop
->msg_window
= create_window( NULL
, NULL
, atom
, 0 )))
1983 detach_window_thread( desktop
->msg_window
);
1984 desktop
->msg_window
->style
= WS_POPUP
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1988 reply
->top_window
= desktop
->top_window
? desktop
->top_window
->handle
: 0;
1989 reply
->msg_window
= desktop
->msg_window
? desktop
->msg_window
->handle
: 0;
1990 release_object( desktop
);
1994 /* set a window owner */
1995 DECL_HANDLER(set_window_owner
)
1997 struct window
*win
= get_window( req
->handle
);
1998 struct window
*owner
= NULL
, *ptr
;
2001 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
2002 if (is_desktop_window(win
))
2004 set_error( STATUS_ACCESS_DENIED
);
2008 /* make sure owner is not a successor of window */
2009 for (ptr
= owner
; ptr
; ptr
= ptr
->owner
? get_window( ptr
->owner
) : NULL
)
2013 set_error( STATUS_INVALID_PARAMETER
);
2018 reply
->prev_owner
= win
->owner
;
2019 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
2023 /* get information from a window handle */
2024 DECL_HANDLER(get_window_info
)
2026 struct window
*win
= get_window( req
->handle
);
2030 reply
->full_handle
= win
->handle
;
2031 reply
->last_active
= win
->handle
;
2032 reply
->is_unicode
= win
->is_unicode
;
2033 reply
->awareness
= win
->dpi_awareness
;
2034 reply
->dpi
= win
->dpi
? win
->dpi
: get_monitor_dpi( win
);
2035 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
2038 reply
->tid
= get_thread_id( win
->thread
);
2039 reply
->pid
= get_process_id( win
->thread
->process
);
2040 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
2045 /* set some information in a window */
2046 DECL_HANDLER(set_window_info
)
2048 struct window
*win
= get_window( req
->handle
);
2051 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
2053 set_error( STATUS_ACCESS_DENIED
);
2056 if (req
->extra_size
> sizeof(req
->extra_value
) ||
2057 req
->extra_offset
< -1 ||
2058 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
2060 set_win32_error( ERROR_INVALID_INDEX
);
2063 if (req
->extra_offset
!= -1)
2065 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
2067 else if (req
->flags
& SET_WIN_EXTRA
)
2069 set_win32_error( ERROR_INVALID_INDEX
);
2072 reply
->old_style
= win
->style
;
2073 reply
->old_ex_style
= win
->ex_style
;
2074 reply
->old_id
= win
->id
;
2075 reply
->old_instance
= win
->instance
;
2076 reply
->old_user_data
= win
->user_data
;
2077 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
2078 if (req
->flags
& SET_WIN_EXSTYLE
)
2080 /* WS_EX_TOPMOST can only be changed for unlinked windows */
2081 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
2082 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
2083 if (!(win
->ex_style
& WS_EX_LAYERED
)) win
->is_layered
= 0;
2085 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
2086 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
2087 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
2088 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
2089 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
2090 &req
->extra_value
, req
->extra_size
);
2092 /* changing window style triggers a non-client paint */
2093 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
2097 /* get a list of the window parents, up to the root of the tree */
2098 DECL_HANDLER(get_window_parents
)
2100 struct window
*ptr
, *win
= get_window( req
->handle
);
2102 user_handle_t
*data
;
2105 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
2107 reply
->count
= total
;
2108 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2109 if (len
&& ((data
= set_reply_data_size( len
))))
2111 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
2112 *data
++ = ptr
->handle
;
2117 /* get a list of the window children */
2118 DECL_HANDLER(get_window_children
)
2120 struct window
*parent
= NULL
;
2122 user_handle_t
*data
;
2124 struct unicode_str cls_name
= get_req_unicode_str();
2125 atom_t atom
= req
->atom
;
2126 struct desktop
*desktop
= NULL
;
2128 if (cls_name
.len
&& !(atom
= find_global_atom( NULL
, &cls_name
))) return;
2132 if (!(desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
))) return;
2133 parent
= desktop
->top_window
;
2137 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
2138 if (!parent
&& !(desktop
= get_thread_desktop( current
, 0 ))) return;
2142 total
= get_children_windows( parent
, atom
, req
->tid
, NULL
, 0 );
2144 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
, NULL
, 0 ) +
2145 get_children_windows( desktop
->msg_window
, atom
, req
->tid
, NULL
, 0 );
2147 reply
->count
= total
;
2148 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2149 if (len
&& ((data
= set_reply_data_size( len
))))
2151 if (parent
) get_children_windows( parent
, atom
, req
->tid
, data
, len
/ sizeof(user_handle_t
) );
2154 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
,
2155 data
, len
/ sizeof(user_handle_t
) );
2157 len
-= total
* sizeof(user_handle_t
);
2158 if (len
>= sizeof(user_handle_t
))
2159 get_children_windows( desktop
->msg_window
, atom
, req
->tid
,
2160 data
, len
/ sizeof(user_handle_t
) );
2163 if (desktop
) release_object( desktop
);
2167 /* get a list of the window children that contain a given point */
2168 DECL_HANDLER(get_window_children_from_point
)
2170 struct user_handle_array array
;
2171 struct window
*parent
= get_window( req
->parent
);
2174 if (!parent
) return;
2176 array
.handles
= NULL
;
2179 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
2181 reply
->count
= array
.count
;
2182 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
2183 if (len
) set_reply_data_ptr( array
.handles
, len
);
2184 else free( array
.handles
);
2188 /* get window tree information from a window handle */
2189 DECL_HANDLER(get_window_tree
)
2191 struct window
*ptr
, *win
= get_window( req
->handle
);
2197 reply
->next_sibling
= 0;
2198 reply
->prev_sibling
= 0;
2199 reply
->first_sibling
= 0;
2200 reply
->last_sibling
= 0;
2201 reply
->first_child
= 0;
2202 reply
->last_child
= 0;
2206 struct window
*parent
= win
->parent
;
2207 reply
->parent
= parent
->handle
;
2208 reply
->owner
= win
->owner
;
2211 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
2212 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
2214 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
2215 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
2217 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2218 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2222 /* set the position and Z order of a window */
2223 DECL_HANDLER(set_window_pos
)
2225 rectangle_t window_rect
, client_rect
, visible_rect
;
2226 struct window
*previous
= NULL
;
2227 struct window
*top
, *win
= get_window( req
->handle
);
2228 unsigned int flags
= req
->swp_flags
;
2231 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2233 if (!(flags
& SWP_NOZORDER
))
2235 switch ((int)req
->previous
)
2237 case 0: /* HWND_TOP */
2238 previous
= WINPTR_TOP
;
2240 case 1: /* HWND_BOTTOM */
2241 previous
= WINPTR_BOTTOM
;
2243 case -1: /* HWND_TOPMOST */
2244 previous
= WINPTR_TOPMOST
;
2246 case -2: /* HWND_NOTOPMOST */
2247 previous
= WINPTR_NOTOPMOST
;
2250 if (!(previous
= get_window( req
->previous
))) return;
2251 /* previous must be a sibling */
2252 if (previous
->parent
!= win
->parent
)
2254 set_error( STATUS_INVALID_PARAMETER
);
2259 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2262 /* windows that use UpdateLayeredWindow don't trigger repaints */
2263 if ((win
->ex_style
& WS_EX_LAYERED
) && !win
->is_layered
) flags
|= SWP_NOREDRAW
;
2265 /* window rectangle must be ordered properly */
2266 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2268 set_error( STATUS_INVALID_PARAMETER
);
2272 window_rect
= visible_rect
= req
->window
;
2273 client_rect
= req
->client
;
2274 if (get_req_data_size() >= sizeof(rectangle_t
))
2275 memcpy( &visible_rect
, get_req_data(), sizeof(rectangle_t
) );
2276 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2278 mirror_rect( &win
->parent
->client_rect
, &window_rect
);
2279 mirror_rect( &win
->parent
->client_rect
, &visible_rect
);
2280 mirror_rect( &win
->parent
->client_rect
, &client_rect
);
2283 win
->paint_flags
= (win
->paint_flags
& ~PAINT_CLIENT_FLAGS
) | (req
->paint_flags
& PAINT_CLIENT_FLAGS
);
2284 if (win
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) update_pixel_format_flags( win
);
2286 if (get_req_data_size() >= 2 * sizeof(rectangle_t
))
2288 rectangle_t valid_rect
;
2289 memcpy( &valid_rect
, (const rectangle_t
*)get_req_data() + 1, sizeof(rectangle_t
) );
2290 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2291 mirror_rect( &win
->parent
->client_rect
, &valid_rect
);
2292 set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, &valid_rect
);
2294 else set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, NULL
);
2296 reply
->new_style
= win
->style
;
2297 reply
->new_ex_style
= win
->ex_style
;
2299 top
= get_top_clipping_window( win
);
2300 if (is_visible( top
) && (top
->paint_flags
& PAINT_HAS_SURFACE
))
2302 reply
->surface_win
= top
->handle
;
2303 reply
->needs_update
= !!(top
->paint_flags
& (PAINT_HAS_PIXEL_FORMAT
| PAINT_PIXEL_FORMAT_CHILD
));
2308 /* get the window and client rectangles of a window */
2309 DECL_HANDLER(get_window_rectangles
)
2311 struct window
*win
= get_window( req
->handle
);
2315 reply
->window
= win
->window_rect
;
2316 reply
->client
= win
->client_rect
;
2318 switch (req
->relative
)
2321 offset_rect( &reply
->window
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2322 offset_rect( &reply
->client
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2323 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_rect( &win
->client_rect
, &reply
->window
);
2326 offset_rect( &reply
->window
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2327 offset_rect( &reply
->client
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2328 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_rect( &win
->window_rect
, &reply
->client
);
2331 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2333 mirror_rect( &win
->parent
->client_rect
, &reply
->window
);
2334 mirror_rect( &win
->parent
->client_rect
, &reply
->client
);
2338 client_to_screen_rect( win
->parent
, &reply
->window
);
2339 client_to_screen_rect( win
->parent
, &reply
->client
);
2342 set_error( STATUS_INVALID_PARAMETER
);
2348 /* get the window text */
2349 DECL_HANDLER(get_window_text
)
2351 struct window
*win
= get_window( req
->handle
);
2353 if (win
&& win
->text
)
2355 reply
->length
= strlenW( win
->text
);
2356 set_reply_data( win
->text
, min( reply
->length
* sizeof(WCHAR
), get_reply_max_size() ));
2361 /* set the window text */
2362 DECL_HANDLER(set_window_text
)
2364 struct window
*win
= get_window( req
->handle
);
2369 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2372 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2373 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2382 /* get the coordinates offset between two windows */
2383 DECL_HANDLER(get_windows_offset
)
2386 int mirror_from
= 0, mirror_to
= 0;
2388 reply
->x
= reply
->y
= 0;
2391 if (!(win
= get_window( req
->from
))) return;
2392 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2395 reply
->x
+= win
->client_rect
.right
- win
->client_rect
.left
;
2397 while (win
&& !is_desktop_window(win
))
2399 reply
->x
+= win
->client_rect
.left
;
2400 reply
->y
+= win
->client_rect
.top
;
2406 if (!(win
= get_window( req
->to
))) return;
2407 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2410 reply
->x
-= win
->client_rect
.right
- win
->client_rect
.left
;
2412 while (win
&& !is_desktop_window(win
))
2414 reply
->x
-= win
->client_rect
.left
;
2415 reply
->y
-= win
->client_rect
.top
;
2419 if (mirror_from
) reply
->x
= -reply
->x
;
2420 reply
->mirror
= mirror_from
^ mirror_to
;
2424 /* get the visible region of a window */
2425 DECL_HANDLER(get_visible_region
)
2427 struct region
*region
;
2428 struct window
*top
, *win
= get_window( req
->window
);
2432 top
= get_top_clipping_window( win
);
2433 if ((region
= get_visible_region( win
, req
->flags
)))
2436 map_win_region_to_screen( win
, region
);
2437 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2438 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2440 reply
->top_win
= top
->handle
;
2441 reply
->top_rect
= top
->visible_rect
;
2443 if (!is_desktop_window(win
))
2445 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2446 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2447 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2451 reply
->win_rect
.left
= 0;
2452 reply
->win_rect
.top
= 0;
2453 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2454 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2456 reply
->paint_flags
= win
->paint_flags
& PAINT_CLIENT_FLAGS
;
2460 /* get the surface visible region of a window */
2461 DECL_HANDLER(get_surface_region
)
2463 struct region
*region
;
2464 struct window
*win
= get_window( req
->window
);
2466 if (!win
|| !is_visible( win
)) return;
2468 if ((region
= get_surface_region( win
)))
2470 rectangle_t
*data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2471 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2473 reply
->visible_rect
= win
->visible_rect
;
2477 /* get the window region */
2478 DECL_HANDLER(get_window_region
)
2481 struct window
*win
= get_window( req
->window
);
2484 if (!win
->win_region
) return;
2486 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2488 struct region
*region
= create_empty_region();
2490 if (!region
) return;
2491 if (!copy_region( region
, win
->win_region
))
2493 free_region( region
);
2496 mirror_region( &win
->window_rect
, region
);
2497 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2499 else data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2501 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2505 /* set the window region */
2506 DECL_HANDLER(set_window_region
)
2508 struct region
*region
= NULL
;
2509 struct window
*win
= get_window( req
->window
);
2513 if (get_req_data_size()) /* no data means remove the region completely */
2515 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2517 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->window_rect
, region
);
2519 set_window_region( win
, region
, req
->redraw
);
2523 /* get a window update region */
2524 DECL_HANDLER(get_update_region
)
2527 unsigned int flags
= req
->flags
;
2528 struct window
*from_child
= NULL
;
2529 struct window
*win
= get_window( req
->window
);
2534 if (req
->from_child
)
2538 if (!(from_child
= get_window( req
->from_child
))) return;
2540 /* make sure from_child is a child of win */
2542 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2545 set_error( STATUS_INVALID_PARAMETER
);
2550 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2552 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2553 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2556 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2557 reply
->child
= win
->handle
;
2559 if (flags
& UPDATE_NOREGION
) return;
2561 if (win
->update_region
)
2563 /* convert update region to screen coordinates */
2564 struct region
*region
= create_empty_region();
2566 if (!region
) return;
2567 if (!copy_region( region
, win
->update_region
))
2569 free_region( region
);
2572 if ((flags
& UPDATE_CLIPCHILDREN
) && (win
->style
& WS_CLIPCHILDREN
))
2573 clip_children( win
, NULL
, region
, win
->client_rect
.left
- win
->window_rect
.left
,
2574 win
->client_rect
.top
- win
->window_rect
.top
);
2575 map_win_region_to_screen( win
, region
);
2576 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2577 &reply
->total_size
))) return;
2578 set_reply_data_ptr( data
, reply
->total_size
);
2581 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2583 validate_parents( win
);
2584 validate_whole_window( win
);
2588 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2589 if (reply
->flags
& UPDATE_ERASE
)
2591 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2592 /* desktop window only gets erased, not repainted */
2593 if (is_desktop_window(win
)) validate_whole_window( win
);
2599 /* update the z order of a window so that a given rectangle is fully visible */
2600 DECL_HANDLER(update_window_zorder
)
2602 rectangle_t tmp
, rect
= req
->rect
;
2603 struct window
*ptr
, *win
= get_window( req
->window
);
2605 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2606 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_rect( &win
->client_rect
, &rect
);
2607 offset_rect( &rect
, win
->client_rect
.left
, win
->client_rect
.top
);
2609 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2611 if (ptr
== win
) break;
2612 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2613 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2614 if (ptr
->is_layered
&& (ptr
->layered_flags
& LWA_COLORKEY
)) continue;
2615 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &rect
)) continue;
2616 if (ptr
->win_region
)
2619 offset_rect( &tmp
, -ptr
->window_rect
.left
, -ptr
->window_rect
.top
);
2620 if (!rect_in_region( ptr
->win_region
, &tmp
)) continue;
2622 /* found a window obscuring the rectangle, now move win above this one */
2623 /* making sure to not violate the topmost rule */
2624 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2626 list_remove( &win
->entry
);
2627 list_add_before( &ptr
->entry
, &win
->entry
);
2634 /* mark parts of a window as needing a redraw */
2635 DECL_HANDLER(redraw_window
)
2637 struct region
*region
= NULL
;
2638 struct window
*win
= get_window( req
->window
);
2641 if (!is_visible( win
)) return; /* nothing to do */
2643 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2645 if (get_req_data_size()) /* no data means whole rectangle */
2647 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2649 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->client_rect
, region
);
2653 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2655 if (region
) free_region( region
);
2659 /* set a window property */
2660 DECL_HANDLER(set_window_property
)
2662 struct unicode_str name
= get_req_unicode_str();
2663 struct window
*win
= get_window( req
->window
);
2669 atom_t atom
= add_global_atom( NULL
, &name
);
2672 set_property( win
, atom
, req
->data
, PROP_TYPE_STRING
);
2673 release_global_atom( NULL
, atom
);
2676 else set_property( win
, req
->atom
, req
->data
, PROP_TYPE_ATOM
);
2680 /* remove a window property */
2681 DECL_HANDLER(remove_window_property
)
2683 struct unicode_str name
= get_req_unicode_str();
2684 struct window
*win
= get_window( req
->window
);
2688 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2689 if (atom
) reply
->data
= remove_property( win
, atom
);
2694 /* get a window property */
2695 DECL_HANDLER(get_window_property
)
2697 struct unicode_str name
= get_req_unicode_str();
2698 struct window
*win
= get_window( req
->window
);
2702 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2703 if (atom
) reply
->data
= get_property( win
, atom
);
2708 /* get the list of properties of a window */
2709 DECL_HANDLER(get_window_properties
)
2711 property_data_t
*data
;
2712 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2713 struct window
*win
= get_window( req
->window
);
2718 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2719 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2720 reply
->total
= count
;
2722 if (count
> max
) count
= max
;
2723 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2725 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2727 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2728 data
->atom
= win
->properties
[i
].atom
;
2729 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2730 data
->data
= win
->properties
[i
].data
;
2737 /* get the new window pointer for a global window, checking permissions */
2738 /* helper for set_global_windows request */
2739 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2748 set_error( STATUS_ACCESS_DENIED
);
2751 *win
= get_window( handle
);
2752 return (*win
!= NULL
);
2755 /* Set/get the global windows */
2756 DECL_HANDLER(set_global_windows
)
2758 struct window
*new_shell_window
= shell_window
;
2759 struct window
*new_shell_listview
= shell_listview
;
2760 struct window
*new_progman_window
= progman_window
;
2761 struct window
*new_taskman_window
= taskman_window
;
2763 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2764 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2765 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2766 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2768 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2770 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2771 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2773 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2775 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2777 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2779 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2781 shell_window
= new_shell_window
;
2782 shell_listview
= new_shell_listview
;
2783 progman_window
= new_progman_window
;
2784 taskman_window
= new_taskman_window
;
2787 /* retrieve layered info for a window */
2788 DECL_HANDLER(get_window_layered_info
)
2790 struct window
*win
= get_window( req
->handle
);
2794 if (win
->is_layered
)
2796 reply
->color_key
= win
->color_key
;
2797 reply
->alpha
= win
->alpha
;
2798 reply
->flags
= win
->layered_flags
;
2800 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
2804 /* set layered info for a window */
2805 DECL_HANDLER(set_window_layered_info
)
2807 struct window
*win
= get_window( req
->handle
);
2811 if (win
->ex_style
& WS_EX_LAYERED
)
2813 int was_layered
= win
->is_layered
;
2815 if (req
->flags
& LWA_ALPHA
) win
->alpha
= req
->alpha
;
2816 else if (!win
->is_layered
) win
->alpha
= 0; /* alpha init value is 0 */
2818 win
->color_key
= req
->color_key
;
2819 win
->layered_flags
= req
->flags
;
2820 win
->is_layered
= 1;
2821 /* repaint since we know now it's not going to use UpdateLayeredWindow */
2822 if (!was_layered
) redraw_window( win
, 0, 1, RDW_ALLCHILDREN
| RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
);
2824 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);