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 assert( win
->desktop
->top_window
== win
);
397 win
->desktop
->top_window
= NULL
;
399 detach_window_thread( win
);
400 if (win
->win_region
) free_region( win
->win_region
);
401 if (win
->update_region
) free_region( win
->update_region
);
402 if (win
->class) release_class( win
->class );
404 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
408 /* get the process owning the top window of a given desktop */
409 struct process
*get_top_window_owner( struct desktop
*desktop
)
411 struct window
*win
= desktop
->top_window
;
412 if (!win
|| !win
->thread
) return NULL
;
413 return win
->thread
->process
;
416 /* attempt to close the desktop window when the last process using it is gone */
417 void close_desktop_window( struct desktop
*desktop
)
419 struct window
*win
= desktop
->top_window
;
420 if (win
&& win
->thread
) post_message( win
->handle
, WM_CLOSE
, 0, 0 );
423 /* create a new window structure (note: the window is not linked in the window tree) */
424 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
425 atom_t atom
, void *instance
)
427 static const rectangle_t empty_rect
;
430 struct desktop
*desktop
;
431 struct window_class
*class;
433 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
435 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
437 release_object( desktop
);
441 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
442 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
444 win
->parent
= parent
;
445 win
->owner
= owner
? owner
->handle
: 0;
446 win
->thread
= current
;
447 win
->desktop
= desktop
;
450 win
->last_active
= win
->handle
;
451 win
->win_region
= NULL
;
452 win
->update_region
= NULL
;
456 win
->instance
= NULL
;
461 win
->paint_flags
= 0;
464 win
->properties
= NULL
;
465 win
->nb_extra_bytes
= extra_bytes
;
466 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
467 memset( win
->extra_bytes
, 0, extra_bytes
);
468 list_init( &win
->children
);
469 list_init( &win
->unlinked
);
471 /* parent must be on the same desktop */
472 if (parent
&& parent
->desktop
!= desktop
)
474 set_error( STATUS_ACCESS_DENIED
);
478 /* if no parent, class must be the desktop */
479 if (!parent
&& !is_desktop_class( class ))
481 set_error( STATUS_ACCESS_DENIED
);
485 /* if parent belongs to a different thread and the window isn't */
486 /* top-level, attach the two threads */
487 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
489 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
491 else /* otherwise just make sure that the thread has a message queue */
493 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
496 /* put it on parent unlinked list */
497 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
500 list_init( &win
->entry
);
501 assert( !desktop
->top_window
);
502 desktop
->top_window
= win
;
503 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
506 current
->desktop_users
++;
512 if (win
->handle
) free_user_handle( win
->handle
);
515 release_object( desktop
);
516 release_class( class );
520 /* destroy all windows belonging to a given thread */
521 void destroy_thread_windows( struct thread
*thread
)
523 user_handle_t handle
= 0;
526 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
528 if (win
->thread
!= thread
) continue;
529 if (is_desktop_window( win
)) detach_window_thread( win
);
530 else destroy_window( win
);
534 /* get the desktop window */
535 static struct window
*get_desktop_window( struct thread
*thread
, int create
)
537 struct window
*top_window
;
538 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
540 if (!desktop
) return NULL
;
542 if (!(top_window
= desktop
->top_window
) && create
)
544 if ((top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
546 detach_window_thread( top_window
);
547 top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
550 release_object( desktop
);
554 /* check whether child is a descendant of parent */
555 int is_child_window( user_handle_t parent
, user_handle_t child
)
557 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
558 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
560 if (!child_ptr
|| !parent_ptr
) return 0;
561 while (child_ptr
->parent
)
563 if (child_ptr
->parent
== parent_ptr
) return 1;
564 child_ptr
= child_ptr
->parent
;
569 /* check whether window is a top-level window */
570 int is_top_level_window( user_handle_t window
)
572 struct window
*win
= get_user_object( window
, USER_WINDOW
);
573 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
576 /* make a window active if possible */
577 int make_window_active( user_handle_t window
)
579 struct window
*owner
, *win
= get_window( window
);
583 /* set last active for window and its owner */
584 win
->last_active
= win
->handle
;
585 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
589 /* increment (or decrement) the window paint count */
590 static inline void inc_window_paint_count( struct window
*win
, int incr
)
592 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
595 /* check if window and all its ancestors are visible */
596 static int is_visible( const struct window
*win
)
598 while (win
&& win
->parent
)
600 if (!(win
->style
& WS_VISIBLE
)) return 0;
602 /* if parent is minimized children are not visible */
603 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
608 /* same as is_visible but takes a window handle */
609 int is_window_visible( user_handle_t window
)
611 struct window
*win
= get_user_object( window
, USER_WINDOW
);
613 return is_visible( win
);
616 /* check if point is inside the window */
617 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
619 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
620 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
621 return 0; /* disabled child */
622 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
623 return 0; /* transparent */
624 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
625 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
626 return 0; /* not in window */
627 if (win
->win_region
&&
628 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
629 return 0; /* not in window region */
633 /* find child of 'parent' that contains the given point (in parent-relative coords) */
634 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
638 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
640 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
642 /* if window is minimized or disabled, return at once */
643 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
645 /* if point is not in client area, return at once */
646 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
647 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
650 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
652 return parent
; /* not found any child */
655 /* find all children of 'parent' that contain the given point */
656 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
657 struct user_handle_array
*array
)
661 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
663 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
665 /* if point is in client area, and window is not minimized or disabled, check children */
666 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
667 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
668 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
670 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
671 y
- ptr
->client_rect
.top
, array
))
675 /* now add window to the array */
676 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
681 /* find window containing point (in absolute coords) */
682 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
686 if (!desktop
->top_window
) return 0;
687 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
691 /* return list of all windows containing point (in absolute coords) */
692 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
696 /* make point relative to top window */
697 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
699 x
-= ptr
->client_rect
.left
;
700 y
-= ptr
->client_rect
.top
;
703 if (!is_point_in_window( top
, x
, y
)) return 1;
705 /* if point is in client area, and window is not minimized or disabled, check children */
706 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
707 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
708 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
710 if (!is_desktop_window(top
))
712 x
-= top
->client_rect
.left
;
713 y
-= top
->client_rect
.top
;
715 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
717 /* now add window to the array */
718 if (!add_handle_to_array( array
, top
->handle
)) return 0;
723 /* return the thread owning a window */
724 struct thread
*get_window_thread( user_handle_t handle
)
726 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
727 if (!win
|| !win
->thread
) return NULL
;
728 return (struct thread
*)grab_object( win
->thread
);
732 /* check if any area of a window needs repainting */
733 static inline int win_needs_repaint( struct window
*win
)
735 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
739 /* find a child of the specified window that needs repainting */
740 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
742 struct window
*ptr
, *ret
= NULL
;
744 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
746 if (!(ptr
->style
& WS_VISIBLE
)) continue;
747 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
749 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
750 ret
= find_child_to_repaint( ptr
, thread
);
754 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
756 /* transparent window, check for non-transparent sibling to paint first */
757 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
759 if (!(ptr
->style
& WS_VISIBLE
)) continue;
760 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
761 if (ptr
->thread
!= thread
) continue;
762 if (win_needs_repaint( ptr
)) return ptr
;
769 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
770 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
772 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
, 0 );
774 if (!top_window
) return 0;
776 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
777 else win
= find_child_to_repaint( top_window
, thread
);
781 /* check that it is a child of the specified parent */
782 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
783 if (ptr
->handle
== parent
) break;
784 /* otherwise don't return any window, we don't repaint a child before its parent */
785 if (!ptr
) win
= NULL
;
788 win
->paint_flags
&= ~PAINT_INTERNAL
;
793 /* intersect the window region with the specified region, relative to the window parent */
794 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
796 /* make region relative to window rect */
797 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
798 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
799 /* make region relative to parent again */
800 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
805 /* convert coordinates from client to screen coords */
806 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
808 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
810 *x
+= win
->client_rect
.left
;
811 *y
+= win
->client_rect
.top
;
815 /* convert coordinates from client to screen coords */
816 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
818 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
820 rect
->left
+= win
->client_rect
.left
;
821 rect
->right
+= win
->client_rect
.left
;
822 rect
->top
+= win
->client_rect
.top
;
823 rect
->bottom
+= win
->client_rect
.top
;
827 /* map the region from window to screen coordinates */
828 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
830 if (!is_desktop_window(win
))
832 int x
= win
->window_rect
.left
;
833 int y
= win
->window_rect
.top
;
834 client_to_screen( win
->parent
, &x
, &y
);
835 offset_region( region
, x
, y
);
840 /* clip all children of a given window out of the visible region */
841 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
842 struct region
*region
, int offset_x
, int offset_y
)
845 struct region
*tmp
= create_empty_region();
847 if (!tmp
) return NULL
;
848 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
850 if (ptr
== last
) break;
851 if (!(ptr
->style
& WS_VISIBLE
)) continue;
852 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
853 set_region_rect( tmp
, &ptr
->visible_rect
);
854 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
859 offset_region( tmp
, offset_x
, offset_y
);
860 if (!(region
= subtract_region( region
, region
, tmp
))) break;
861 if (is_region_empty( region
)) break;
868 /* compute the intersection of two rectangles; return 0 if the result is empty */
869 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
871 dst
->left
= max( src1
->left
, src2
->left
);
872 dst
->top
= max( src1
->top
, src2
->top
);
873 dst
->right
= min( src1
->right
, src2
->right
);
874 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
875 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
879 /* offset the coordinates of a rectangle */
880 static inline void offset_rect( rectangle_t
*rect
, int offset_x
, int offset_y
)
882 rect
->left
+= offset_x
;
883 rect
->top
+= offset_y
;
884 rect
->right
+= offset_x
;
885 rect
->bottom
+= offset_y
;
889 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
890 static void set_region_client_rect( struct region
*region
, struct window
*win
)
894 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
895 set_region_rect( region
, &rect
);
899 /* get the top-level window to clip against for a given window */
900 static inline struct window
*get_top_clipping_window( struct window
*win
)
902 while (win
->parent
&& !is_desktop_window(win
->parent
)) win
= win
->parent
;
907 /* compute the visible region of a window, in window coordinates */
908 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
910 struct region
*tmp
= NULL
, *region
;
911 int offset_x
, offset_y
;
913 if (!(region
= create_empty_region())) return NULL
;
915 /* first check if all ancestors are visible */
917 if (!is_visible( win
)) return region
; /* empty region */
919 /* create a region relative to the window itself */
921 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
923 set_region_client_rect( region
, win
->parent
);
924 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
926 else if (flags
& DCX_WINDOW
)
928 set_region_rect( region
, &win
->visible_rect
);
929 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
933 set_region_client_rect( region
, win
);
934 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
939 if (flags
& DCX_CLIPCHILDREN
)
941 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
944 offset_x
= win
->client_rect
.left
;
945 offset_y
= win
->client_rect
.top
;
947 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
950 /* clip siblings of ancestors */
952 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
955 offset_x
= win
->window_rect
.left
;
956 offset_y
= win
->window_rect
.top
;
959 if ((tmp
= create_empty_region()) != NULL
)
963 /* we don't clip out top-level siblings as that's up to the native windowing system */
964 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
966 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
967 if (is_region_empty( region
)) break;
969 /* clip to parent client area */
971 if (!is_desktop_window(win
))
973 offset_x
+= win
->client_rect
.left
;
974 offset_y
+= win
->client_rect
.top
;
975 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
977 set_region_client_rect( tmp
, win
);
978 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
979 if (!intersect_region( region
, region
, tmp
)) goto error
;
980 if (is_region_empty( region
)) break;
984 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
988 if (tmp
) free_region( tmp
);
989 free_region( region
);
994 /* get the window class of a window */
995 struct window_class
* get_window_class( user_handle_t window
)
998 if (!(win
= get_window( window
))) return NULL
;
999 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1003 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1004 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1005 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1007 int offset_x
= 0, offset_y
= 0;
1009 if (!(win
->style
& WS_VISIBLE
)) return 0;
1011 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1012 if (!is_desktop_window(win
))
1014 offset_x
= win
->window_rect
.left
;
1015 offset_y
= win
->window_rect
.top
;
1021 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1022 if (!is_desktop_window(win
))
1024 offset_x
+= win
->client_rect
.left
;
1025 offset_y
+= win
->client_rect
.top
;
1026 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1028 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1029 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1031 offset_rect( rect
, -offset_x
, -offset_y
);
1035 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1036 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1037 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1042 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1043 if (!(tmp
= create_empty_region())) return NULL
;
1044 set_region_rect( tmp
, &rect
);
1048 /* map it to client coords */
1049 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1050 win
->window_rect
.top
- win
->client_rect
.top
);
1052 /* intersect specified region with bounding rect */
1053 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1054 if (is_region_empty( tmp
)) goto done
;
1056 /* map it back to window coords */
1057 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1058 win
->client_rect
.top
- win
->window_rect
.top
);
1068 /* set a region as new update region for the window */
1069 static void set_update_region( struct window
*win
, struct region
*region
)
1071 if (region
&& !is_region_empty( region
))
1073 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1074 else free_region( win
->update_region
);
1075 win
->update_region
= region
;
1079 if (win
->update_region
)
1081 inc_window_paint_count( win
, -1 );
1082 free_region( win
->update_region
);
1084 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1085 win
->update_region
= NULL
;
1086 if (region
) free_region( region
);
1091 /* add a region to the update region; the passed region is freed or reused */
1092 static int add_update_region( struct window
*win
, struct region
*region
)
1094 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1096 free_region( region
);
1099 set_update_region( win
, region
);
1104 /* crop the update region of children to the specified rectangle, in client coords */
1105 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1107 struct window
*child
;
1109 rectangle_t child_rect
;
1111 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1113 if (!(child
->style
& WS_VISIBLE
)) continue;
1114 if (!rect
) /* crop everything out */
1116 crop_children_update_region( child
, NULL
);
1117 set_update_region( child
, NULL
);
1121 /* nothing to do if child is completely inside rect */
1122 if (child
->window_rect
.left
>= rect
->left
&&
1123 child
->window_rect
.top
>= rect
->top
&&
1124 child
->window_rect
.right
<= rect
->right
&&
1125 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1127 /* map to child client coords and crop grand-children */
1129 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1130 crop_children_update_region( child
, &child_rect
);
1132 /* now crop the child itself */
1133 if (!child
->update_region
) continue;
1134 if (!(tmp
= create_empty_region())) continue;
1135 set_region_rect( tmp
, rect
);
1136 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1137 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1138 else free_region( tmp
);
1143 /* validate the non client area of a window */
1144 static void validate_non_client( struct window
*win
)
1149 if (!win
->update_region
) return; /* nothing to do */
1151 /* get client rect in window coords */
1152 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1153 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1154 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1155 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1157 if ((tmp
= create_empty_region()))
1159 set_region_rect( tmp
, &rect
);
1160 if (intersect_region( tmp
, win
->update_region
, tmp
))
1161 set_update_region( win
, tmp
);
1165 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1169 /* validate a window completely so that we don't get any further paint messages for it */
1170 static void validate_whole_window( struct window
*win
)
1172 set_update_region( win
, NULL
);
1174 if (win
->paint_flags
& PAINT_INTERNAL
)
1176 win
->paint_flags
&= ~PAINT_INTERNAL
;
1177 inc_window_paint_count( win
, -1 );
1182 /* validate a window's children so that we don't get any further paint messages for it */
1183 static void validate_children( struct window
*win
)
1185 struct window
*child
;
1187 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1189 if (!(child
->style
& WS_VISIBLE
)) continue;
1190 validate_children(child
);
1191 validate_whole_window(child
);
1196 /* validate the update region of a window on all parents; helper for get_update_region */
1197 static void validate_parents( struct window
*child
)
1199 int offset_x
= 0, offset_y
= 0;
1200 struct window
*win
= child
;
1201 struct region
*tmp
= NULL
;
1203 if (!child
->update_region
) return;
1207 /* map to parent client coords */
1208 offset_x
+= win
->window_rect
.left
;
1209 offset_y
+= win
->window_rect
.top
;
1213 /* and now map to window coords */
1214 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1215 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1217 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1219 if (!tmp
&& !(tmp
= create_empty_region())) return;
1220 offset_region( child
->update_region
, offset_x
, offset_y
);
1221 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1223 set_update_region( win
, tmp
);
1226 /* restore child coords */
1227 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1230 if (tmp
) free_region( tmp
);
1234 /* add/subtract a region (in client coordinates) to the update region of the window */
1235 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1238 struct window
*child
;
1240 if (flags
& RDW_INVALIDATE
)
1242 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1244 if (!add_update_region( win
, tmp
)) return;
1246 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1247 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1249 else if (flags
& RDW_VALIDATE
)
1251 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1253 set_update_region( win
, NULL
);
1255 else if (win
->update_region
)
1257 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1259 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1264 set_update_region( win
, tmp
);
1266 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1267 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1271 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1273 win
->paint_flags
|= PAINT_INTERNAL
;
1274 inc_window_paint_count( win
, 1 );
1276 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1278 win
->paint_flags
&= ~PAINT_INTERNAL
;
1279 inc_window_paint_count( win
, -1 );
1282 /* now process children recursively */
1284 if (flags
& RDW_NOCHILDREN
) return;
1285 if (win
->style
& WS_MINIMIZE
) return;
1286 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1288 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1290 /* map to client coordinates */
1291 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1292 win
->window_rect
.top
- win
->client_rect
.top
);
1294 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1296 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1298 if (!(child
->style
& WS_VISIBLE
)) continue;
1299 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1300 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1301 redraw_window( child
, tmp
, 1, flags
);
1302 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1308 /* retrieve the update flags for a window depending on the state of the update region */
1309 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1311 unsigned int ret
= 0;
1313 if (flags
& UPDATE_NONCLIENT
)
1315 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1317 if (flags
& UPDATE_ERASE
)
1319 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1321 if (flags
& UPDATE_PAINT
)
1323 if (win
->update_region
)
1325 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1326 ret
|= UPDATE_PAINT
;
1329 if (flags
& UPDATE_INTERNALPAINT
)
1331 if (win
->paint_flags
& PAINT_INTERNAL
)
1333 ret
|= UPDATE_INTERNALPAINT
;
1334 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1341 /* iterate through the children of the given window until we find one with some update flags */
1342 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1343 unsigned int flags
, struct window
**child
)
1346 unsigned int ret
= 0;
1348 /* first make sure we want to iterate children at all */
1350 if (win
->style
& WS_MINIMIZE
) return 0;
1352 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1353 * here we only want to repaint children of windows that clip them, others
1354 * need to wait for WM_PAINT to be done in the parent first.
1356 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1358 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1360 if (from_child
) /* skip all children until from_child is found */
1362 if (ptr
== from_child
) from_child
= NULL
;
1365 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1366 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1371 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1376 /* iterate through children and siblings of the given window until we find one with some update flags */
1377 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1378 unsigned int flags
, struct window
**child
)
1381 struct window
*ptr
, *from_sibling
= NULL
;
1383 /* if some parent is not visible start from the next sibling */
1385 if (!is_visible( win
)) return 0;
1386 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1388 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1389 if (ptr
== win
) break;
1392 /* non-client painting must be delayed if one of the parents is going to
1393 * be repainted and doesn't clip children */
1395 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1397 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1399 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1402 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1404 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1406 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1407 if (ptr
== win
) break;
1413 /* check window itself (only if not restarting from a child) */
1417 if ((ret
= get_update_flags( win
, flags
)))
1425 /* now check children */
1427 if (flags
& UPDATE_NOCHILDREN
) return 0;
1430 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1431 from_sibling
= from_child
;
1434 /* then check siblings and parent siblings */
1436 while (from_sibling
->parent
&& from_sibling
!= win
)
1438 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1440 from_sibling
= from_sibling
->parent
;
1446 /* expose the areas revealed by a vis region change on the window parent */
1447 /* returns the region exposed on the window itself (in client coordinates) */
1448 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1449 struct region
*old_vis_rgn
)
1451 struct region
*new_vis_rgn
, *exposed_rgn
;
1453 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1455 if ((exposed_rgn
= create_empty_region()))
1457 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1459 /* make it relative to the new client area */
1460 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1461 win
->window_rect
.top
- win
->client_rect
.top
);
1465 free_region( exposed_rgn
);
1472 /* make it relative to the old window pos for subtracting */
1473 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1474 win
->window_rect
.top
- old_window_rect
->top
);
1476 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1477 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1478 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1480 if (!is_region_empty( new_vis_rgn
))
1482 /* make it relative to parent */
1483 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1484 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1488 free_region( new_vis_rgn
);
1493 /* set the window and client rectangles, updating the update region if necessary */
1494 static void set_window_pos( struct window
*win
, struct window
*previous
,
1495 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1496 const rectangle_t
*client_rect
, const rectangle_t
*valid_rects
)
1498 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1499 const rectangle_t old_window_rect
= win
->window_rect
;
1500 const rectangle_t old_client_rect
= win
->client_rect
;
1502 int client_changed
, frame_changed
;
1503 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1505 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1507 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1509 /* set the new window info before invalidating anything */
1511 win
->window_rect
= *window_rect
;
1512 win
->client_rect
= *client_rect
;
1513 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1514 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1515 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1517 /* assume the visible rect stays at the same offset from the window rect */
1518 win
->visible_rect
.left
+= window_rect
->left
- old_window_rect
.left
;
1519 win
->visible_rect
.top
+= window_rect
->top
- old_window_rect
.top
;
1520 win
->visible_rect
.right
+= window_rect
->right
- old_window_rect
.right
;
1521 win
->visible_rect
.bottom
+= window_rect
->bottom
- old_window_rect
.bottom
;
1522 /* but don't make it smaller than the client rect */
1523 if (win
->visible_rect
.left
> client_rect
->left
)
1524 win
->visible_rect
.left
= max( window_rect
->left
, client_rect
->left
);
1525 if (win
->visible_rect
.top
> client_rect
->top
)
1526 win
->visible_rect
.top
= max( window_rect
->top
, client_rect
->top
);
1527 if (win
->visible_rect
.right
< client_rect
->right
)
1528 win
->visible_rect
.right
= min( window_rect
->right
, client_rect
->right
);
1529 if (win
->visible_rect
.bottom
< client_rect
->bottom
)
1530 win
->visible_rect
.bottom
= min( window_rect
->bottom
, client_rect
->bottom
);
1532 /* if the window is not visible, everything is easy */
1533 if (!visible
) return;
1535 /* expose anything revealed by the change */
1537 if (!(swp_flags
& SWP_NOREDRAW
))
1538 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1540 if (!(win
->style
& WS_VISIBLE
))
1542 /* clear the update region since the window is no longer visible */
1543 validate_whole_window( win
);
1544 validate_children( win
);
1548 /* crop update region to the new window rect */
1550 if (win
->update_region
)
1552 if (get_window_visible_rect( win
, &rect
, 1 ))
1554 struct region
*tmp
= create_empty_region();
1557 set_region_rect( tmp
, &rect
);
1558 if (intersect_region( tmp
, win
->update_region
, tmp
))
1559 set_update_region( win
, tmp
);
1564 else set_update_region( win
, NULL
); /* visible rect is empty */
1567 /* crop children regions to the new window rect */
1569 if (get_window_visible_rect( win
, &rect
, 0 ))
1571 /* map to client coords */
1572 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1573 win
->window_rect
.top
- win
->client_rect
.top
);
1574 crop_children_update_region( win
, &rect
);
1576 else crop_children_update_region( win
, NULL
);
1578 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1580 /* expose the whole non-client area if it changed in any way */
1582 if (swp_flags
& SWP_NOCOPYBITS
)
1584 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1585 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ));
1586 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1590 /* assume the bits have been moved to follow the window rect */
1591 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1592 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1593 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1594 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1595 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
);
1596 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1597 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1598 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1599 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1601 memcmp( &valid_rects
[0], client_rect
, sizeof(*client_rect
) ));
1604 if (frame_changed
|| client_changed
)
1606 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1608 set_region_rect( win_rgn
, window_rect
);
1611 /* subtract the valid portion of client rect from the total region */
1612 struct region
*tmp
= create_empty_region();
1615 set_region_rect( tmp
, &valid_rects
[0] );
1616 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1617 else free_region( tmp
);
1620 if (!is_desktop_window(win
))
1621 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1624 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1625 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1629 exposed_rgn
= win_rgn
;
1630 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1635 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1638 if (old_vis_rgn
) free_region( old_vis_rgn
);
1639 if (exposed_rgn
) free_region( exposed_rgn
);
1640 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1643 /* set the window visible rect */
1644 static void set_window_visible_rect( struct window
*win
, const rectangle_t
*visible_rect
,
1645 unsigned int swp_flags
)
1647 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1648 const rectangle_t old_visible_rect
= win
->visible_rect
;
1650 if (!memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) )) return;
1652 /* if the window is not visible, everything is easy */
1653 if (!is_visible( win
) || (swp_flags
& SWP_NOREDRAW
))
1655 win
->visible_rect
= *visible_rect
;
1659 if (!(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1660 win
->visible_rect
= *visible_rect
;
1662 /* expose anything revealed by the change */
1664 exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
);
1667 /* subtract the client rect from the total window rect */
1668 set_region_rect( exposed_rgn
, &win
->window_rect
);
1669 set_region_rect( old_vis_rgn
, &win
->client_rect
);
1670 if (subtract_region( exposed_rgn
, exposed_rgn
, old_vis_rgn
))
1672 if (!is_desktop_window(win
))
1673 offset_region( exposed_rgn
, -win
->client_rect
.left
, -win
->client_rect
.top
);
1674 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_FRAME
| RDW_NOCHILDREN
);
1676 free_region( exposed_rgn
);
1678 free_region( old_vis_rgn
);
1679 clear_error(); /* we ignore out of memory errors once the new rect has been set */
1683 /* set the window region, updating the update region if necessary */
1684 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1686 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1688 /* no need to redraw if window is not visible */
1689 if (redraw
&& !is_visible( win
)) redraw
= 0;
1691 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1693 if (win
->win_region
) free_region( win
->win_region
);
1694 win
->win_region
= region
;
1696 /* expose anything revealed by the change */
1697 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1699 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1700 free_region( exposed_rgn
);
1703 if (old_vis_rgn
) free_region( old_vis_rgn
);
1704 clear_error(); /* we ignore out of memory errors since the region has been set */
1708 /* create a window */
1709 DECL_HANDLER(create_window
)
1711 struct window
*win
, *parent
, *owner
= NULL
;
1716 if (!req
->parent
) parent
= get_desktop_window( current
, 0 );
1717 else if (!(parent
= get_window( req
->parent
))) return;
1721 if (!(owner
= get_window( req
->owner
))) return;
1722 if (is_desktop_window(owner
)) owner
= NULL
;
1723 else if (!is_desktop_window(parent
))
1725 /* an owned window must be created as top-level */
1726 set_error( STATUS_ACCESS_DENIED
);
1729 else /* owner must be a top-level window */
1730 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1733 if (get_req_data_size())
1734 atom
= find_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
1738 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1740 reply
->handle
= win
->handle
;
1741 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1742 reply
->owner
= win
->owner
;
1743 reply
->extra
= win
->nb_extra_bytes
;
1744 reply
->class_ptr
= get_class_client_ptr( win
->class );
1748 /* set the parent of a window */
1749 DECL_HANDLER(set_parent
)
1751 struct window
*win
, *parent
= NULL
;
1753 if (!(win
= get_window( req
->handle
))) return;
1754 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1756 if (is_desktop_window(win
))
1758 set_error( STATUS_INVALID_PARAMETER
);
1761 reply
->old_parent
= win
->parent
->handle
;
1762 reply
->full_parent
= parent
? parent
->handle
: 0;
1763 set_parent_window( win
, parent
);
1767 /* destroy a window */
1768 DECL_HANDLER(destroy_window
)
1770 struct window
*win
= get_window( req
->handle
);
1773 if (!is_desktop_window(win
)) destroy_window( win
);
1774 else if (win
->thread
== current
) detach_window_thread( win
);
1775 else set_error( STATUS_ACCESS_DENIED
);
1780 /* retrieve the desktop window for the current thread */
1781 DECL_HANDLER(get_desktop_window
)
1783 struct window
*win
= get_desktop_window( current
, req
->force
);
1785 if (win
) reply
->handle
= win
->handle
;
1789 /* set a window owner */
1790 DECL_HANDLER(set_window_owner
)
1792 struct window
*win
= get_window( req
->handle
);
1793 struct window
*owner
= NULL
;
1796 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1797 if (is_desktop_window(win
))
1799 set_error( STATUS_ACCESS_DENIED
);
1802 reply
->prev_owner
= win
->owner
;
1803 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1807 /* get information from a window handle */
1808 DECL_HANDLER(get_window_info
)
1810 struct window
*win
= get_window( req
->handle
);
1812 reply
->full_handle
= 0;
1813 reply
->tid
= reply
->pid
= 0;
1816 reply
->full_handle
= win
->handle
;
1817 reply
->last_active
= win
->handle
;
1818 reply
->is_unicode
= win
->is_unicode
;
1819 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1822 reply
->tid
= get_thread_id( win
->thread
);
1823 reply
->pid
= get_process_id( win
->thread
->process
);
1824 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
1830 /* set some information in a window */
1831 DECL_HANDLER(set_window_info
)
1833 struct window
*win
= get_window( req
->handle
);
1836 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
1838 set_error( STATUS_ACCESS_DENIED
);
1841 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1842 req
->extra_offset
< -1 ||
1843 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1845 set_win32_error( ERROR_INVALID_INDEX
);
1848 if (req
->extra_offset
!= -1)
1850 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1852 else if (req
->flags
& SET_WIN_EXTRA
)
1854 set_win32_error( ERROR_INVALID_INDEX
);
1857 reply
->old_style
= win
->style
;
1858 reply
->old_ex_style
= win
->ex_style
;
1859 reply
->old_id
= win
->id
;
1860 reply
->old_instance
= win
->instance
;
1861 reply
->old_user_data
= win
->user_data
;
1862 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1863 if (req
->flags
& SET_WIN_EXSTYLE
)
1865 /* WS_EX_TOPMOST can only be changed for unlinked windows */
1866 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
1867 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
1869 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1870 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1871 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
1872 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1873 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1874 &req
->extra_value
, req
->extra_size
);
1876 /* changing window style triggers a non-client paint */
1877 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1881 /* get a list of the window parents, up to the root of the tree */
1882 DECL_HANDLER(get_window_parents
)
1884 struct window
*ptr
, *win
= get_window( req
->handle
);
1886 user_handle_t
*data
;
1889 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1891 reply
->count
= total
;
1892 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1893 if (len
&& ((data
= set_reply_data_size( len
))))
1895 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1896 *data
++ = ptr
->handle
;
1901 /* get a list of the window children */
1902 DECL_HANDLER(get_window_children
)
1904 struct window
*ptr
, *parent
;
1906 user_handle_t
*data
;
1908 atom_t atom
= req
->atom
;
1912 struct desktop
*desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
);
1913 if (!desktop
) return;
1914 parent
= desktop
->top_window
;
1915 release_object( desktop
);
1917 else parent
= get_window( req
->parent
);
1919 if (!parent
) return;
1921 if (get_req_data_size())
1923 atom
= find_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
1927 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1929 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
1930 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1933 reply
->count
= total
;
1934 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1935 if (len
&& ((data
= set_reply_data_size( len
))))
1937 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1939 if (len
< sizeof(*data
)) break;
1940 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
1941 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1942 *data
++ = ptr
->handle
;
1943 len
-= sizeof(*data
);
1949 /* get a list of the window children that contain a given point */
1950 DECL_HANDLER(get_window_children_from_point
)
1952 struct user_handle_array array
;
1953 struct window
*parent
= get_window( req
->parent
);
1956 if (!parent
) return;
1958 array
.handles
= NULL
;
1961 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1963 reply
->count
= array
.count
;
1964 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1965 if (len
) set_reply_data_ptr( array
.handles
, len
);
1966 else free( array
.handles
);
1970 /* get window tree information from a window handle */
1971 DECL_HANDLER(get_window_tree
)
1973 struct window
*ptr
, *win
= get_window( req
->handle
);
1979 reply
->next_sibling
= 0;
1980 reply
->prev_sibling
= 0;
1981 reply
->first_sibling
= 0;
1982 reply
->last_sibling
= 0;
1983 reply
->first_child
= 0;
1984 reply
->last_child
= 0;
1988 struct window
*parent
= win
->parent
;
1989 reply
->parent
= parent
->handle
;
1990 reply
->owner
= win
->owner
;
1993 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
1994 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
1996 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
1997 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
1999 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2000 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2004 /* set the position and Z order of a window */
2005 DECL_HANDLER(set_window_pos
)
2007 const rectangle_t
*valid_rects
= NULL
;
2008 struct window
*previous
= NULL
;
2009 struct window
*win
= get_window( req
->handle
);
2010 unsigned int flags
= req
->flags
;
2013 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2015 if (!(flags
& SWP_NOZORDER
))
2017 switch ((int)(unsigned long)req
->previous
)
2019 case 0: /* HWND_TOP */
2020 previous
= WINPTR_TOP
;
2022 case 1: /* HWND_BOTTOM */
2023 previous
= WINPTR_BOTTOM
;
2025 case -1: /* HWND_TOPMOST */
2026 previous
= WINPTR_TOPMOST
;
2028 case -2: /* HWND_NOTOPMOST */
2029 previous
= WINPTR_NOTOPMOST
;
2032 if (!(previous
= get_window( req
->previous
))) return;
2033 /* previous must be a sibling */
2034 if (previous
->parent
!= win
->parent
)
2036 set_error( STATUS_INVALID_PARAMETER
);
2041 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2044 /* window rectangle must be ordered properly */
2045 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2047 set_error( STATUS_INVALID_PARAMETER
);
2051 if (get_req_data_size() >= 2 * sizeof(rectangle_t
)) valid_rects
= get_req_data();
2052 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, valid_rects
);
2053 reply
->new_style
= win
->style
;
2054 reply
->new_ex_style
= win
->ex_style
;
2055 reply
->visible
= win
->visible_rect
;
2059 /* set the visible rectangle of a window */
2060 DECL_HANDLER(set_window_visible_rect
)
2062 struct window
*win
= get_window( req
->handle
);
2063 if (win
) set_window_visible_rect( win
, &req
->visible
, req
->flags
);
2067 /* get the window and client rectangles of a window */
2068 DECL_HANDLER(get_window_rectangles
)
2070 struct window
*win
= get_window( req
->handle
);
2074 reply
->window
= win
->window_rect
;
2075 reply
->visible
= win
->visible_rect
;
2076 reply
->client
= win
->client_rect
;
2081 /* get the window text */
2082 DECL_HANDLER(get_window_text
)
2084 struct window
*win
= get_window( req
->handle
);
2086 if (win
&& win
->text
)
2088 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
2089 if (len
> get_reply_max_size()) len
= get_reply_max_size();
2090 set_reply_data( win
->text
, len
);
2095 /* set the window text */
2096 DECL_HANDLER(set_window_text
)
2098 struct window
*win
= get_window( req
->handle
);
2103 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2106 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2107 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2116 /* get the coordinates offset between two windows */
2117 DECL_HANDLER(get_windows_offset
)
2121 reply
->x
= reply
->y
= 0;
2124 if (!(win
= get_window( req
->from
))) return;
2125 while (win
&& !is_desktop_window(win
))
2127 reply
->x
+= win
->client_rect
.left
;
2128 reply
->y
+= win
->client_rect
.top
;
2134 if (!(win
= get_window( req
->to
))) return;
2135 while (win
&& !is_desktop_window(win
))
2137 reply
->x
-= win
->client_rect
.left
;
2138 reply
->y
-= win
->client_rect
.top
;
2145 /* get the visible region of a window */
2146 DECL_HANDLER(get_visible_region
)
2148 struct region
*region
;
2149 struct window
*top
, *win
= get_window( req
->window
);
2153 top
= get_top_clipping_window( win
);
2154 if ((region
= get_visible_region( win
, req
->flags
)))
2157 map_win_region_to_screen( win
, region
);
2158 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2159 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2161 reply
->top_win
= top
->handle
;
2162 reply
->top_rect
= (top
== win
&& (req
->flags
& DCX_WINDOW
)) ? top
->visible_rect
: top
->client_rect
;
2164 if (!is_desktop_window(win
))
2166 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2167 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2168 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2172 reply
->win_rect
.left
= 0;
2173 reply
->win_rect
.top
= 0;
2174 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2175 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2180 /* get the window region */
2181 DECL_HANDLER(get_window_region
)
2183 struct window
*win
= get_window( req
->window
);
2187 if (win
->win_region
)
2189 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2190 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2195 /* set the window region */
2196 DECL_HANDLER(set_window_region
)
2198 struct region
*region
= NULL
;
2199 struct window
*win
= get_window( req
->window
);
2203 if (get_req_data_size()) /* no data means remove the region completely */
2205 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2208 set_window_region( win
, region
, req
->redraw
);
2212 /* get a window update region */
2213 DECL_HANDLER(get_update_region
)
2216 unsigned int flags
= req
->flags
;
2217 struct window
*from_child
= NULL
;
2218 struct window
*win
= get_window( req
->window
);
2223 if (req
->from_child
)
2227 if (!(from_child
= get_window( req
->from_child
))) return;
2229 /* make sure from_child is a child of win */
2231 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2234 set_error( STATUS_INVALID_PARAMETER
);
2239 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2241 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2242 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2245 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2246 reply
->child
= win
->handle
;
2248 if (flags
& UPDATE_NOREGION
) return;
2250 if (win
->update_region
)
2252 /* convert update region to screen coordinates */
2253 struct region
*region
= create_empty_region();
2255 if (!region
) return;
2256 if (!copy_region( region
, win
->update_region
))
2258 free_region( region
);
2261 map_win_region_to_screen( win
, region
);
2262 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2263 &reply
->total_size
))) return;
2264 set_reply_data_ptr( data
, reply
->total_size
);
2267 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2269 validate_parents( win
);
2270 validate_whole_window( win
);
2274 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2275 if (reply
->flags
& UPDATE_ERASE
)
2277 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2278 /* desktop window only gets erased, not repainted */
2279 if (is_desktop_window(win
)) validate_whole_window( win
);
2285 /* update the z order of a window so that a given rectangle is fully visible */
2286 DECL_HANDLER(update_window_zorder
)
2289 struct window
*ptr
, *win
= get_window( req
->window
);
2291 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2293 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2295 if (ptr
== win
) break;
2296 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2297 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2298 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
2299 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
2300 /* found a window obscuring the rectangle, now move win above this one */
2301 /* making sure to not violate the topmost rule */
2302 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2304 list_remove( &win
->entry
);
2305 list_add_before( &ptr
->entry
, &win
->entry
);
2312 /* mark parts of a window as needing a redraw */
2313 DECL_HANDLER(redraw_window
)
2315 struct region
*region
= NULL
;
2316 struct window
*win
= get_window( req
->window
);
2319 if (!is_visible( win
)) return; /* nothing to do */
2321 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2323 if (get_req_data_size()) /* no data means whole rectangle */
2325 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2330 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2332 if (region
) free_region( region
);
2336 /* set a window property */
2337 DECL_HANDLER(set_window_property
)
2339 struct window
*win
= get_window( req
->window
);
2343 if (get_req_data_size())
2345 atom_t atom
= add_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
2348 set_property( win
, atom
, req
->handle
, PROP_TYPE_STRING
);
2349 release_global_atom( NULL
, atom
);
2352 else set_property( win
, req
->atom
, req
->handle
, PROP_TYPE_ATOM
);
2356 /* remove a window property */
2357 DECL_HANDLER(remove_window_property
)
2359 struct window
*win
= get_window( req
->window
);
2363 atom_t atom
= req
->atom
;
2364 if (get_req_data_size()) atom
= find_global_atom( NULL
, get_req_data(),
2365 get_req_data_size() / sizeof(WCHAR
) );
2366 if (atom
) reply
->handle
= remove_property( win
, atom
);
2371 /* get a window property */
2372 DECL_HANDLER(get_window_property
)
2374 struct window
*win
= get_window( req
->window
);
2378 atom_t atom
= req
->atom
;
2379 if (get_req_data_size()) atom
= find_global_atom( NULL
, get_req_data(),
2380 get_req_data_size() / sizeof(WCHAR
) );
2381 if (atom
) reply
->handle
= get_property( win
, atom
);
2386 /* get the list of properties of a window */
2387 DECL_HANDLER(get_window_properties
)
2389 property_data_t
*data
;
2390 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2391 struct window
*win
= get_window( req
->window
);
2396 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2397 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2398 reply
->total
= count
;
2400 if (count
> max
) count
= max
;
2401 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2403 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2405 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2406 data
->atom
= win
->properties
[i
].atom
;
2407 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2408 data
->handle
= win
->properties
[i
].handle
;
2415 /* get the new window pointer for a global window, checking permissions */
2416 /* helper for set_global_windows request */
2417 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2426 set_error( STATUS_ACCESS_DENIED
);
2429 *win
= get_window( handle
);
2430 return (*win
!= NULL
);
2433 /* Set/get the global windows */
2434 DECL_HANDLER(set_global_windows
)
2436 struct window
*new_shell_window
= shell_window
;
2437 struct window
*new_shell_listview
= shell_listview
;
2438 struct window
*new_progman_window
= progman_window
;
2439 struct window
*new_taskman_window
= taskman_window
;
2441 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2442 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2443 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2444 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2446 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2448 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2449 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2451 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2453 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2455 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2457 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2459 shell_window
= new_shell_window
;
2460 shell_listview
= new_shell_listview
;
2461 progman_window
= new_progman_window
;
2462 taskman_window
= new_taskman_window
;