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 lparam_t user_data
; /* user-specific data */
87 WCHAR
*text
; /* window caption text */
88 unsigned int paint_flags
; /* various painting flags */
89 int prop_inuse
; /* number of in-use window properties */
90 int prop_alloc
; /* number of allocated window properties */
91 struct property
*properties
; /* window properties array */
92 int nb_extra_bytes
; /* number of extra bytes */
93 char extra_bytes
[1]; /* extra bytes storage */
96 /* flags that can be set by the client */
97 #define PAINT_HAS_SURFACE SET_WINPOS_PAINT_SURFACE
98 #define PAINT_HAS_PIXEL_FORMAT SET_WINPOS_PIXEL_FORMAT
99 #define PAINT_CLIENT_FLAGS (PAINT_HAS_SURFACE | PAINT_HAS_PIXEL_FORMAT)
100 /* flags only manipulated by the server */
101 #define PAINT_INTERNAL 0x0010 /* internal WM_PAINT pending */
102 #define PAINT_ERASE 0x0020 /* needs WM_ERASEBKGND */
103 #define PAINT_NONCLIENT 0x0040 /* needs WM_NCPAINT */
104 #define PAINT_DELAYED_ERASE 0x0080 /* still needs erase after WM_ERASEBKGND */
105 #define PAINT_PIXEL_FORMAT_CHILD 0x0100 /* at least one child has a custom pixel format */
107 /* growable array of user handles */
108 struct user_handle_array
110 user_handle_t
*handles
;
115 /* global window pointers */
116 static struct window
*shell_window
;
117 static struct window
*shell_listview
;
118 static struct window
*progman_window
;
119 static struct window
*taskman_window
;
121 /* magic HWND_TOP etc. pointers */
122 #define WINPTR_TOP ((struct window *)1L)
123 #define WINPTR_BOTTOM ((struct window *)2L)
124 #define WINPTR_TOPMOST ((struct window *)3L)
125 #define WINPTR_NOTOPMOST ((struct window *)4L)
127 /* retrieve a pointer to a window from its handle */
128 static inline struct window
*get_window( user_handle_t handle
)
130 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
131 if (!ret
) set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
135 /* check if window is the desktop */
136 static inline int is_desktop_window( const struct window
*win
)
138 return !win
->parent
; /* only desktop windows have no parent */
141 /* get next window in Z-order list */
142 static inline struct window
*get_next_window( struct window
*win
)
144 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
145 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
148 /* get previous window in Z-order list */
149 static inline struct window
*get_prev_window( struct window
*win
)
151 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
152 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
155 /* get first child in Z-order list */
156 static inline struct window
*get_first_child( struct window
*win
)
158 struct list
*ptr
= list_head( &win
->children
);
159 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
162 /* get last child in Z-order list */
163 static inline struct window
*get_last_child( struct window
*win
)
165 struct list
*ptr
= list_tail( &win
->children
);
166 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
169 /* set the PAINT_PIXEL_FORMAT_CHILD flag on all the parents */
170 /* note: we never reset the flag, it's just a heuristic */
171 static inline void update_pixel_format_flags( struct window
*win
)
173 for (win
= win
->parent
; win
&& win
->parent
; win
= win
->parent
)
174 win
->paint_flags
|= PAINT_PIXEL_FORMAT_CHILD
;
177 /* link a window at the right place in the siblings list */
178 static void link_window( struct window
*win
, struct window
*previous
)
180 if (previous
== WINPTR_NOTOPMOST
)
182 if (!(win
->ex_style
& WS_EX_TOPMOST
) && win
->is_linked
) return; /* nothing to do */
183 win
->ex_style
&= ~WS_EX_TOPMOST
;
184 previous
= WINPTR_TOP
; /* fallback to the HWND_TOP case */
187 list_remove( &win
->entry
); /* unlink it from the previous location */
189 if (previous
== WINPTR_BOTTOM
)
191 list_add_tail( &win
->parent
->children
, &win
->entry
);
192 win
->ex_style
&= ~WS_EX_TOPMOST
;
194 else if (previous
== WINPTR_TOPMOST
)
196 list_add_head( &win
->parent
->children
, &win
->entry
);
197 win
->ex_style
|= WS_EX_TOPMOST
;
199 else if (previous
== WINPTR_TOP
)
201 struct list
*entry
= win
->parent
->children
.next
;
202 if (!(win
->ex_style
& WS_EX_TOPMOST
)) /* put it above the first non-topmost window */
204 while (entry
!= &win
->parent
->children
)
206 struct window
*next
= LIST_ENTRY( entry
, struct window
, entry
);
207 if (!(next
->ex_style
& WS_EX_TOPMOST
)) break;
208 if (next
->handle
== win
->owner
) /* keep it above owner */
210 win
->ex_style
|= WS_EX_TOPMOST
;
216 list_add_before( entry
, &win
->entry
);
220 list_add_after( &previous
->entry
, &win
->entry
);
221 if (!(previous
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
&= ~WS_EX_TOPMOST
;
224 struct window
*next
= get_next_window( win
);
225 if (next
&& (next
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
|= WS_EX_TOPMOST
;
232 /* change the parent of a window (or unlink the window if the new parent is NULL) */
233 static int set_parent_window( struct window
*win
, struct window
*parent
)
237 /* make sure parent is not a child of window */
238 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
242 set_error( STATUS_INVALID_PARAMETER
);
249 win
->parent
= parent
;
250 link_window( win
, WINPTR_TOP
);
252 /* if parent belongs to a different thread and the window isn't */
253 /* top-level, attach the two threads */
254 if (parent
->thread
&& parent
->thread
!= win
->thread
&& !is_desktop_window(parent
))
255 attach_thread_input( win
->thread
, parent
->thread
);
257 if (win
->paint_flags
& (PAINT_HAS_PIXEL_FORMAT
| PAINT_PIXEL_FORMAT_CHILD
))
258 update_pixel_format_flags( win
);
260 else /* move it to parent unlinked list */
262 list_remove( &win
->entry
); /* unlink it from the previous location */
263 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
269 /* append a user handle to a handle array */
270 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
272 if (array
->count
>= array
->total
)
274 int new_total
= max( array
->total
* 2, 32 );
275 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
278 free( array
->handles
);
279 set_error( STATUS_NO_MEMORY
);
282 array
->handles
= new_array
;
283 array
->total
= new_total
;
285 array
->handles
[array
->count
++] = handle
;
289 /* set a window property */
290 static void set_property( struct window
*win
, atom_t atom
, lparam_t data
, enum property_type type
)
293 struct property
*new_props
;
295 /* check if it exists already */
296 for (i
= 0; i
< win
->prop_inuse
; i
++)
298 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
303 if (win
->properties
[i
].atom
== atom
)
305 win
->properties
[i
].type
= type
;
306 win
->properties
[i
].data
= data
;
311 /* need to add an entry */
312 if (!grab_global_atom( NULL
, atom
)) return;
316 if (win
->prop_inuse
>= win
->prop_alloc
)
318 /* need to grow the array */
319 if (!(new_props
= realloc( win
->properties
,
320 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
322 set_error( STATUS_NO_MEMORY
);
323 release_global_atom( NULL
, atom
);
326 win
->prop_alloc
+= 16;
327 win
->properties
= new_props
;
329 free
= win
->prop_inuse
++;
331 win
->properties
[free
].atom
= atom
;
332 win
->properties
[free
].type
= type
;
333 win
->properties
[free
].data
= data
;
336 /* remove a window property */
337 static lparam_t
remove_property( struct window
*win
, atom_t atom
)
341 for (i
= 0; i
< win
->prop_inuse
; i
++)
343 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
344 if (win
->properties
[i
].atom
== atom
)
346 release_global_atom( NULL
, atom
);
347 win
->properties
[i
].type
= PROP_TYPE_FREE
;
348 return win
->properties
[i
].data
;
351 /* FIXME: last error? */
355 /* find a window property */
356 static lparam_t
get_property( struct window
*win
, atom_t atom
)
360 for (i
= 0; i
< win
->prop_inuse
; i
++)
362 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
363 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].data
;
365 /* FIXME: last error? */
369 /* destroy all properties of a window */
370 static inline void destroy_properties( struct window
*win
)
374 if (!win
->properties
) return;
375 for (i
= 0; i
< win
->prop_inuse
; i
++)
377 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
378 release_global_atom( NULL
, win
->properties
[i
].atom
);
380 free( win
->properties
);
383 /* detach a window from its owner thread but keep the window around */
384 static void detach_window_thread( struct window
*win
)
386 struct thread
*thread
= win
->thread
;
391 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
392 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
393 queue_cleanup_window( thread
, win
->handle
);
395 assert( thread
->desktop_users
> 0 );
396 thread
->desktop_users
--;
397 release_class( win
->class );
400 /* don't hold a reference to the desktop so that the desktop window can be */
401 /* destroyed when the desktop ref count reaches zero */
402 release_object( win
->desktop
);
406 /* get the process owning the top window of a given desktop */
407 struct process
*get_top_window_owner( struct desktop
*desktop
)
409 struct window
*win
= desktop
->top_window
;
410 if (!win
|| !win
->thread
) return NULL
;
411 return win
->thread
->process
;
414 /* get the top window size of a given desktop */
415 void get_top_window_rectangle( struct desktop
*desktop
, rectangle_t
*rect
)
417 struct window
*win
= desktop
->top_window
;
418 if (!win
) rect
->left
= rect
->top
= rect
->right
= rect
->bottom
= 0;
419 else *rect
= win
->window_rect
;
422 /* post a message to the desktop window */
423 void post_desktop_message( struct desktop
*desktop
, unsigned int message
,
424 lparam_t wparam
, lparam_t lparam
)
426 struct window
*win
= desktop
->top_window
;
427 if (win
&& win
->thread
) post_message( win
->handle
, message
, wparam
, lparam
);
430 /* create a new window structure (note: the window is not linked in the window tree) */
431 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
432 atom_t atom
, mod_handle_t instance
)
434 static const rectangle_t empty_rect
;
436 struct window
*win
= NULL
;
437 struct desktop
*desktop
;
438 struct window_class
*class;
440 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
442 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
444 release_object( desktop
);
448 if (!parent
) /* null parent is only allowed for desktop or HWND_MESSAGE top window */
450 if (is_desktop_class( class ))
451 parent
= desktop
->top_window
; /* use existing desktop if any */
452 else if (is_hwnd_message_class( class ))
453 /* use desktop window if message window is already created */
454 parent
= desktop
->msg_window
? desktop
->top_window
: NULL
;
455 else if (!(parent
= desktop
->top_window
)) /* must already have a desktop then */
457 set_error( STATUS_ACCESS_DENIED
);
462 /* parent must be on the same desktop */
463 if (parent
&& parent
->desktop
!= desktop
)
465 set_error( STATUS_ACCESS_DENIED
);
469 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
470 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
472 win
->parent
= parent
;
473 win
->owner
= owner
? owner
->handle
: 0;
474 win
->thread
= current
;
475 win
->desktop
= desktop
;
478 win
->last_active
= win
->handle
;
479 win
->win_region
= NULL
;
480 win
->update_region
= NULL
;
490 win
->paint_flags
= 0;
493 win
->properties
= NULL
;
494 win
->nb_extra_bytes
= extra_bytes
;
495 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
496 memset( win
->extra_bytes
, 0, extra_bytes
);
497 list_init( &win
->children
);
498 list_init( &win
->unlinked
);
500 /* if parent belongs to a different thread and the window isn't */
501 /* top-level, attach the two threads */
502 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
504 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
506 else /* otherwise just make sure that the thread has a message queue */
508 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
511 /* put it on parent unlinked list */
512 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
515 list_init( &win
->entry
);
516 if (is_desktop_class( class ))
518 assert( !desktop
->top_window
);
519 desktop
->top_window
= win
;
520 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
524 assert( !desktop
->msg_window
);
525 desktop
->msg_window
= win
;
529 current
->desktop_users
++;
535 if (win
->handle
) free_user_handle( win
->handle
);
538 release_object( desktop
);
539 release_class( class );
543 /* destroy all windows belonging to a given thread */
544 void destroy_thread_windows( struct thread
*thread
)
546 user_handle_t handle
= 0;
549 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
551 if (win
->thread
!= thread
) continue;
552 if (is_desktop_window( win
)) detach_window_thread( win
);
553 else destroy_window( win
);
557 /* get the desktop window */
558 static struct window
*get_desktop_window( struct thread
*thread
)
560 struct window
*top_window
;
561 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
563 if (!desktop
) return NULL
;
564 top_window
= desktop
->top_window
;
565 release_object( desktop
);
569 /* check whether child is a descendant of parent */
570 int is_child_window( user_handle_t parent
, user_handle_t child
)
572 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
573 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
575 if (!child_ptr
|| !parent_ptr
) return 0;
576 while (child_ptr
->parent
)
578 if (child_ptr
->parent
== parent_ptr
) return 1;
579 child_ptr
= child_ptr
->parent
;
584 /* check whether window is a top-level window */
585 int is_top_level_window( user_handle_t window
)
587 struct window
*win
= get_user_object( window
, USER_WINDOW
);
588 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
591 /* make a window active if possible */
592 int make_window_active( user_handle_t window
)
594 struct window
*owner
, *win
= get_window( window
);
598 /* set last active for window and its owners */
602 owner
->last_active
= win
->handle
;
603 owner
= get_user_object( owner
->owner
, USER_WINDOW
);
608 /* increment (or decrement) the window paint count */
609 static inline void inc_window_paint_count( struct window
*win
, int incr
)
611 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
614 /* check if window and all its ancestors are visible */
615 static int is_visible( const struct window
*win
)
619 if (!(win
->style
& WS_VISIBLE
)) return 0;
621 /* if parent is minimized children are not visible */
622 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
627 /* same as is_visible but takes a window handle */
628 int is_window_visible( user_handle_t window
)
630 struct window
*win
= get_user_object( window
, USER_WINDOW
);
632 return is_visible( win
);
635 int is_window_transparent( user_handle_t window
)
637 struct window
*win
= get_user_object( window
, USER_WINDOW
);
639 return (win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
);
642 /* check if point is inside the window */
643 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
645 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
646 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
647 return 0; /* disabled child */
648 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
649 return 0; /* transparent */
650 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
651 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
652 return 0; /* not in window */
653 if (win
->win_region
&&
654 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
655 return 0; /* not in window region */
659 /* fill an array with the handles of the children of a specified window */
660 static unsigned int get_children_windows( struct window
*parent
, atom_t atom
, thread_id_t tid
,
661 user_handle_t
*handles
, unsigned int max_count
)
664 unsigned int count
= 0;
666 if (!parent
) return 0;
668 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
670 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
671 if (tid
&& get_thread_id(ptr
->thread
) != tid
) continue;
674 if (count
>= max_count
) break;
675 handles
[count
] = ptr
->handle
;
682 /* find child of 'parent' that contains the given point (in parent-relative coords) */
683 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
687 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
689 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
691 /* if window is minimized or disabled, return at once */
692 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
694 /* if point is not in client area, return at once */
695 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
696 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
699 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
701 return parent
; /* not found any child */
704 /* find all children of 'parent' that contain the given point */
705 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
706 struct user_handle_array
*array
)
710 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
712 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
714 /* if point is in client area, and window is not minimized or disabled, check children */
715 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
716 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
717 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
719 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
720 y
- ptr
->client_rect
.top
, array
))
724 /* now add window to the array */
725 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
730 /* find window containing point (in absolute coords) */
731 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
735 if (!desktop
->top_window
) return 0;
736 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
740 /* return list of all windows containing point (in absolute coords) */
741 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
745 /* make point relative to top window */
746 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
748 x
-= ptr
->client_rect
.left
;
749 y
-= ptr
->client_rect
.top
;
752 if (!is_point_in_window( top
, x
, y
)) return 1;
754 /* if point is in client area, and window is not minimized or disabled, check children */
755 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
756 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
757 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
759 if (!is_desktop_window(top
))
761 x
-= top
->client_rect
.left
;
762 y
-= top
->client_rect
.top
;
764 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
766 /* now add window to the array */
767 if (!add_handle_to_array( array
, top
->handle
)) return 0;
772 /* return the thread owning a window */
773 struct thread
*get_window_thread( user_handle_t handle
)
775 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
776 if (!win
|| !win
->thread
) return NULL
;
777 return (struct thread
*)grab_object( win
->thread
);
781 /* check if any area of a window needs repainting */
782 static inline int win_needs_repaint( struct window
*win
)
784 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
788 /* find a child of the specified window that needs repainting */
789 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
791 struct window
*ptr
, *ret
= NULL
;
793 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
795 if (!(ptr
->style
& WS_VISIBLE
)) continue;
796 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
798 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
799 ret
= find_child_to_repaint( ptr
, thread
);
803 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
805 /* transparent window, check for non-transparent sibling to paint first */
806 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
808 if (!(ptr
->style
& WS_VISIBLE
)) continue;
809 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
810 if (ptr
->thread
!= thread
) continue;
811 if (win_needs_repaint( ptr
)) return ptr
;
818 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
819 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
821 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
);
823 if (!top_window
) return 0;
825 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
826 else win
= find_child_to_repaint( top_window
, thread
);
830 /* check that it is a child of the specified parent */
831 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
832 if (ptr
->handle
== parent
) break;
833 /* otherwise don't return any window, we don't repaint a child before its parent */
834 if (!ptr
) win
= NULL
;
837 win
->paint_flags
&= ~PAINT_INTERNAL
;
842 /* intersect the window region with the specified region, relative to the window parent */
843 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
845 /* make region relative to window rect */
846 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
847 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
848 /* make region relative to parent again */
849 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
854 /* convert coordinates from client to screen coords */
855 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
857 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
859 *x
+= win
->client_rect
.left
;
860 *y
+= win
->client_rect
.top
;
864 /* convert coordinates from client to screen coords */
865 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
867 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
869 rect
->left
+= win
->client_rect
.left
;
870 rect
->right
+= win
->client_rect
.left
;
871 rect
->top
+= win
->client_rect
.top
;
872 rect
->bottom
+= win
->client_rect
.top
;
876 /* map the region from window to screen coordinates */
877 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
879 if (!is_desktop_window(win
))
881 int x
= win
->window_rect
.left
;
882 int y
= win
->window_rect
.top
;
883 client_to_screen( win
->parent
, &x
, &y
);
884 offset_region( region
, x
, y
);
889 /* clip all children of a given window out of the visible region */
890 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
891 struct region
*region
, int offset_x
, int offset_y
)
894 struct region
*tmp
= create_empty_region();
896 if (!tmp
) return NULL
;
897 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
899 if (ptr
== last
) break;
900 if (!(ptr
->style
& WS_VISIBLE
)) continue;
901 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
902 set_region_rect( tmp
, &ptr
->visible_rect
);
903 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
908 offset_region( tmp
, offset_x
, offset_y
);
909 if (!(region
= subtract_region( region
, region
, tmp
))) break;
910 if (is_region_empty( region
)) break;
917 /* offset the coordinates of a rectangle */
918 static inline void offset_rect( rectangle_t
*rect
, int offset_x
, int offset_y
)
920 rect
->left
+= offset_x
;
921 rect
->top
+= offset_y
;
922 rect
->right
+= offset_x
;
923 rect
->bottom
+= offset_y
;
927 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
928 static void set_region_client_rect( struct region
*region
, struct window
*win
)
932 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
933 set_region_rect( region
, &rect
);
937 /* get the top-level window to clip against for a given window */
938 static inline struct window
*get_top_clipping_window( struct window
*win
)
940 while (!(win
->paint_flags
& PAINT_HAS_SURFACE
) && win
->parent
&& !is_desktop_window(win
->parent
))
946 /* compute the visible region of a window, in window coordinates */
947 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
949 struct region
*tmp
= NULL
, *region
;
950 int offset_x
, offset_y
;
952 if (!(region
= create_empty_region())) return NULL
;
954 /* first check if all ancestors are visible */
956 if (!is_visible( win
)) return region
; /* empty region */
958 /* create a region relative to the window itself */
960 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
962 set_region_client_rect( region
, win
->parent
);
963 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
965 else if (flags
& DCX_WINDOW
)
967 set_region_rect( region
, &win
->visible_rect
);
968 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
972 set_region_client_rect( region
, win
);
973 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
978 if (flags
& DCX_CLIPCHILDREN
)
980 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
983 offset_x
= win
->client_rect
.left
;
984 offset_y
= win
->client_rect
.top
;
986 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
989 /* clip siblings of ancestors */
991 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
994 offset_x
= win
->window_rect
.left
;
995 offset_y
= win
->window_rect
.top
;
998 if ((tmp
= create_empty_region()) != NULL
)
1002 /* we don't clip out top-level siblings as that's up to the native windowing system */
1003 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
1005 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
1006 if (is_region_empty( region
)) break;
1008 /* clip to parent client area */
1010 if (!is_desktop_window(win
))
1012 offset_x
+= win
->client_rect
.left
;
1013 offset_y
+= win
->client_rect
.top
;
1014 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
1016 set_region_client_rect( tmp
, win
);
1017 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
1018 if (!intersect_region( region
, region
, tmp
)) goto error
;
1019 if (is_region_empty( region
)) break;
1023 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
1027 if (tmp
) free_region( tmp
);
1028 free_region( region
);
1033 /* clip all children with a custom pixel format out of the visible region */
1034 static struct region
*clip_pixel_format_children( struct window
*parent
, struct region
*parent_clip
,
1035 struct region
*region
, int offset_x
, int offset_y
)
1038 struct region
*clip
= create_empty_region();
1040 if (!clip
) return NULL
;
1042 LIST_FOR_EACH_ENTRY_REV( ptr
, &parent
->children
, struct window
, entry
)
1044 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1045 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
1047 /* add the visible rect */
1048 set_region_rect( clip
, &ptr
->visible_rect
);
1049 if (ptr
->win_region
&& !intersect_window_region( clip
, ptr
)) break;
1050 offset_region( clip
, offset_x
, offset_y
);
1051 if (!intersect_region( clip
, clip
, parent_clip
)) break;
1052 if (!union_region( region
, region
, clip
)) break;
1053 if (!(ptr
->paint_flags
& (PAINT_HAS_PIXEL_FORMAT
| PAINT_PIXEL_FORMAT_CHILD
))) continue;
1055 /* subtract the client rect if it uses a custom pixel format */
1056 set_region_rect( clip
, &ptr
->client_rect
);
1057 if (ptr
->win_region
&& !intersect_window_region( clip
, ptr
)) break;
1058 offset_region( clip
, offset_x
, offset_y
);
1059 if (!intersect_region( clip
, clip
, parent_clip
)) break;
1060 if ((ptr
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) && !subtract_region( region
, region
, clip
))
1063 if (!clip_pixel_format_children( ptr
, clip
, region
, offset_x
+ ptr
->client_rect
.left
,
1064 offset_y
+ ptr
->client_rect
.top
))
1067 free_region( clip
);
1072 /* compute the visible surface region of a window, in parent coordinates */
1073 static struct region
*get_surface_region( struct window
*win
)
1075 struct region
*region
, *clip
;
1076 int offset_x
, offset_y
;
1078 /* create a region relative to the window itself */
1080 if (!(region
= create_empty_region())) return NULL
;
1081 if (!(clip
= create_empty_region())) goto error
;
1082 set_region_rect( region
, &win
->visible_rect
);
1083 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
1084 set_region_rect( clip
, &win
->client_rect
);
1085 if (win
->win_region
&& !intersect_window_region( clip
, win
)) goto error
;
1089 if (!is_desktop_window(win
))
1091 offset_x
= win
->client_rect
.left
;
1092 offset_y
= win
->client_rect
.top
;
1094 else offset_x
= offset_y
= 0;
1096 if (!clip_pixel_format_children( win
, clip
, region
, offset_x
, offset_y
)) goto error
;
1098 free_region( clip
);
1102 if (clip
) free_region( clip
);
1103 free_region( region
);
1108 /* get the window class of a window */
1109 struct window_class
* get_window_class( user_handle_t window
)
1112 if (!(win
= get_window( window
))) return NULL
;
1113 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1117 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1118 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1119 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1121 int offset_x
= 0, offset_y
= 0;
1123 if (!(win
->style
& WS_VISIBLE
)) return 0;
1125 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1126 if (!is_desktop_window(win
))
1128 offset_x
= win
->window_rect
.left
;
1129 offset_y
= win
->window_rect
.top
;
1135 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1136 if (!is_desktop_window(win
))
1138 offset_x
+= win
->client_rect
.left
;
1139 offset_y
+= win
->client_rect
.top
;
1140 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1142 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1143 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1145 offset_rect( rect
, -offset_x
, -offset_y
);
1149 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1150 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1151 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1156 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1157 if (!(tmp
= create_empty_region())) return NULL
;
1158 set_region_rect( tmp
, &rect
);
1162 /* map it to client coords */
1163 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1164 win
->window_rect
.top
- win
->client_rect
.top
);
1166 /* intersect specified region with bounding rect */
1167 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1168 if (is_region_empty( tmp
)) goto done
;
1170 /* map it back to window coords */
1171 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1172 win
->client_rect
.top
- win
->window_rect
.top
);
1182 /* set a region as new update region for the window */
1183 static void set_update_region( struct window
*win
, struct region
*region
)
1185 if (region
&& !is_region_empty( region
))
1187 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1188 else free_region( win
->update_region
);
1189 win
->update_region
= region
;
1193 if (win
->update_region
)
1195 inc_window_paint_count( win
, -1 );
1196 free_region( win
->update_region
);
1198 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1199 win
->update_region
= NULL
;
1200 if (region
) free_region( region
);
1205 /* add a region to the update region; the passed region is freed or reused */
1206 static int add_update_region( struct window
*win
, struct region
*region
)
1208 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1210 free_region( region
);
1213 set_update_region( win
, region
);
1218 /* crop the update region of children to the specified rectangle, in client coords */
1219 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1221 struct window
*child
;
1223 rectangle_t child_rect
;
1225 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1227 if (!(child
->style
& WS_VISIBLE
)) continue;
1228 if (!rect
) /* crop everything out */
1230 crop_children_update_region( child
, NULL
);
1231 set_update_region( child
, NULL
);
1235 /* nothing to do if child is completely inside rect */
1236 if (child
->window_rect
.left
>= rect
->left
&&
1237 child
->window_rect
.top
>= rect
->top
&&
1238 child
->window_rect
.right
<= rect
->right
&&
1239 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1241 /* map to child client coords and crop grand-children */
1243 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1244 crop_children_update_region( child
, &child_rect
);
1246 /* now crop the child itself */
1247 if (!child
->update_region
) continue;
1248 if (!(tmp
= create_empty_region())) continue;
1249 set_region_rect( tmp
, rect
);
1250 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1251 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1252 else free_region( tmp
);
1257 /* validate the non client area of a window */
1258 static void validate_non_client( struct window
*win
)
1263 if (!win
->update_region
) return; /* nothing to do */
1265 /* get client rect in window coords */
1266 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1267 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1268 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1269 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1271 if ((tmp
= create_empty_region()))
1273 set_region_rect( tmp
, &rect
);
1274 if (intersect_region( tmp
, win
->update_region
, tmp
))
1275 set_update_region( win
, tmp
);
1279 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1283 /* validate a window completely so that we don't get any further paint messages for it */
1284 static void validate_whole_window( struct window
*win
)
1286 set_update_region( win
, NULL
);
1288 if (win
->paint_flags
& PAINT_INTERNAL
)
1290 win
->paint_flags
&= ~PAINT_INTERNAL
;
1291 inc_window_paint_count( win
, -1 );
1296 /* validate a window's children so that we don't get any further paint messages for it */
1297 static void validate_children( struct window
*win
)
1299 struct window
*child
;
1301 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1303 if (!(child
->style
& WS_VISIBLE
)) continue;
1304 validate_children(child
);
1305 validate_whole_window(child
);
1310 /* validate the update region of a window on all parents; helper for get_update_region */
1311 static void validate_parents( struct window
*child
)
1313 int offset_x
= 0, offset_y
= 0;
1314 struct window
*win
= child
;
1315 struct region
*tmp
= NULL
;
1317 if (!child
->update_region
) return;
1321 /* map to parent client coords */
1322 offset_x
+= win
->window_rect
.left
;
1323 offset_y
+= win
->window_rect
.top
;
1327 /* and now map to window coords */
1328 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1329 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1331 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1333 if (!tmp
&& !(tmp
= create_empty_region())) return;
1334 offset_region( child
->update_region
, offset_x
, offset_y
);
1335 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1337 set_update_region( win
, tmp
);
1340 /* restore child coords */
1341 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1344 if (tmp
) free_region( tmp
);
1348 /* add/subtract a region (in client coordinates) to the update region of the window */
1349 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1352 struct window
*child
;
1354 if (flags
& RDW_INVALIDATE
)
1356 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1358 if (!add_update_region( win
, tmp
)) return;
1360 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1361 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1363 else if (flags
& RDW_VALIDATE
)
1365 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1367 set_update_region( win
, NULL
);
1369 else if (win
->update_region
)
1371 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1373 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1378 set_update_region( win
, tmp
);
1380 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1381 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1385 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1387 win
->paint_flags
|= PAINT_INTERNAL
;
1388 inc_window_paint_count( win
, 1 );
1390 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1392 win
->paint_flags
&= ~PAINT_INTERNAL
;
1393 inc_window_paint_count( win
, -1 );
1396 /* now process children recursively */
1398 if (flags
& RDW_NOCHILDREN
) return;
1399 if (win
->style
& WS_MINIMIZE
) return;
1400 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1402 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1404 /* map to client coordinates */
1405 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1406 win
->window_rect
.top
- win
->client_rect
.top
);
1408 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1410 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1412 if (!(child
->style
& WS_VISIBLE
)) continue;
1413 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1414 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1415 redraw_window( child
, tmp
, 1, flags
);
1416 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1422 /* retrieve the update flags for a window depending on the state of the update region */
1423 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1425 unsigned int ret
= 0;
1427 if (flags
& UPDATE_NONCLIENT
)
1429 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1431 if (flags
& UPDATE_ERASE
)
1433 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1435 if (flags
& UPDATE_PAINT
)
1437 if (win
->update_region
)
1439 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1440 ret
|= UPDATE_PAINT
;
1443 if (flags
& UPDATE_INTERNALPAINT
)
1445 if (win
->paint_flags
& PAINT_INTERNAL
)
1447 ret
|= UPDATE_INTERNALPAINT
;
1448 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1455 /* iterate through the children of the given window until we find one with some update flags */
1456 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1457 unsigned int flags
, struct window
**child
)
1460 unsigned int ret
= 0;
1462 /* first make sure we want to iterate children at all */
1464 if (win
->style
& WS_MINIMIZE
) return 0;
1466 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1467 * here we only want to repaint children of windows that clip them, others
1468 * need to wait for WM_PAINT to be done in the parent first.
1470 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1472 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1474 if (from_child
) /* skip all children until from_child is found */
1476 if (ptr
== from_child
) from_child
= NULL
;
1479 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1480 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1485 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1490 /* iterate through children and siblings of the given window until we find one with some update flags */
1491 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1492 unsigned int flags
, struct window
**child
)
1495 struct window
*ptr
, *from_sibling
= NULL
;
1497 /* if some parent is not visible start from the next sibling */
1499 if (!is_visible( win
)) return 0;
1500 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1502 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1503 if (ptr
== win
) break;
1506 /* non-client painting must be delayed if one of the parents is going to
1507 * be repainted and doesn't clip children */
1509 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1511 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1513 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1516 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1518 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1520 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1521 if (ptr
== win
) break;
1527 /* check window itself (only if not restarting from a child) */
1531 if ((ret
= get_update_flags( win
, flags
)))
1539 /* now check children */
1541 if (flags
& UPDATE_NOCHILDREN
) return 0;
1544 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1545 from_sibling
= from_child
;
1548 /* then check siblings and parent siblings */
1550 while (from_sibling
->parent
&& from_sibling
!= win
)
1552 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1554 from_sibling
= from_sibling
->parent
;
1560 /* expose the areas revealed by a vis region change on the window parent */
1561 /* returns the region exposed on the window itself (in client coordinates) */
1562 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1563 struct region
*old_vis_rgn
)
1565 struct region
*new_vis_rgn
, *exposed_rgn
;
1567 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1569 if ((exposed_rgn
= create_empty_region()))
1571 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1573 /* make it relative to the new client area */
1574 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1575 win
->window_rect
.top
- win
->client_rect
.top
);
1579 free_region( exposed_rgn
);
1586 /* make it relative to the old window pos for subtracting */
1587 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1588 win
->window_rect
.top
- old_window_rect
->top
);
1590 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1591 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1592 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1594 if (!is_region_empty( new_vis_rgn
))
1596 /* make it relative to parent */
1597 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1598 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1602 free_region( new_vis_rgn
);
1607 /* set the window and client rectangles, updating the update region if necessary */
1608 static void set_window_pos( struct window
*win
, struct window
*previous
,
1609 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1610 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1611 const rectangle_t
*valid_rects
)
1613 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1614 const rectangle_t old_window_rect
= win
->window_rect
;
1615 const rectangle_t old_visible_rect
= win
->visible_rect
;
1616 const rectangle_t old_client_rect
= win
->client_rect
;
1618 int client_changed
, frame_changed
;
1619 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1621 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1623 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1625 /* set the new window info before invalidating anything */
1627 win
->window_rect
= *window_rect
;
1628 win
->visible_rect
= *visible_rect
;
1629 win
->client_rect
= *client_rect
;
1630 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1631 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1632 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1634 /* keep children at the same position relative to top right corner when the parent is mirrored */
1635 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
1637 struct window
*child
;
1638 int old_size
= old_client_rect
.right
- old_client_rect
.left
;
1639 int new_size
= win
->client_rect
.right
- win
->client_rect
.left
;
1641 if (old_size
!= new_size
) LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1643 offset_rect( &child
->window_rect
, new_size
- old_size
, 0 );
1644 offset_rect( &child
->visible_rect
, new_size
- old_size
, 0 );
1645 offset_rect( &child
->client_rect
, new_size
- old_size
, 0 );
1649 /* reset cursor clip rectangle when the desktop changes size */
1650 if (win
== win
->desktop
->top_window
) win
->desktop
->cursor
.clip
= *window_rect
;
1652 /* if the window is not visible, everything is easy */
1653 if (!visible
) return;
1655 /* expose anything revealed by the change */
1657 if (!(swp_flags
& SWP_NOREDRAW
))
1658 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1660 if (!(win
->style
& WS_VISIBLE
))
1662 /* clear the update region since the window is no longer visible */
1663 validate_whole_window( win
);
1664 validate_children( win
);
1668 /* crop update region to the new window rect */
1670 if (win
->update_region
)
1672 if (get_window_visible_rect( win
, &rect
, 1 ))
1674 struct region
*tmp
= create_empty_region();
1677 set_region_rect( tmp
, &rect
);
1678 if (intersect_region( tmp
, win
->update_region
, tmp
))
1679 set_update_region( win
, tmp
);
1684 else set_update_region( win
, NULL
); /* visible rect is empty */
1687 /* crop children regions to the new window rect */
1689 if (get_window_visible_rect( win
, &rect
, 0 ))
1691 /* map to client coords */
1692 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1693 win
->window_rect
.top
- win
->client_rect
.top
);
1694 crop_children_update_region( win
, &rect
);
1696 else crop_children_update_region( win
, NULL
);
1698 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1700 /* expose the whole non-client area if it changed in any way */
1702 if (swp_flags
& SWP_NOCOPYBITS
)
1704 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1705 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1706 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1707 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1711 /* assume the bits have been moved to follow the window rect */
1712 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1713 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1714 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1715 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1716 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1717 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1718 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1719 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1720 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1721 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1722 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1723 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1724 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1726 memcmp( &valid_rects
[0], client_rect
, sizeof(*client_rect
) ));
1727 /* if part of the non-client area was exposed, consider it changed */
1728 if (exposed_rgn
&& !frame_changed
)
1730 get_region_extents( exposed_rgn
, &rect
);
1731 offset_rect( &rect
, client_rect
->left
, client_rect
->top
);
1732 frame_changed
= (rect
.left
< client_rect
->left
|| rect
.top
< client_rect
->top
||
1733 rect
.right
> client_rect
->right
|| rect
.bottom
> client_rect
->bottom
);
1737 if (frame_changed
|| client_changed
)
1739 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1741 set_region_rect( win_rgn
, window_rect
);
1744 /* subtract the valid portion of client rect from the total region */
1745 struct region
*tmp
= create_empty_region();
1748 set_region_rect( tmp
, &valid_rects
[0] );
1749 /* subtract update region since invalid parts of the valid rect won't be copied */
1750 if (win
->update_region
)
1752 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1753 subtract_region( tmp
, tmp
, win
->update_region
);
1754 offset_region( tmp
, window_rect
->left
, window_rect
->top
);
1756 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1757 else free_region( tmp
);
1760 if (!is_desktop_window(win
))
1761 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1764 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1765 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1769 exposed_rgn
= win_rgn
;
1770 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1775 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1778 if (old_vis_rgn
) free_region( old_vis_rgn
);
1779 if (exposed_rgn
) free_region( exposed_rgn
);
1780 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1784 /* set the window region, updating the update region if necessary */
1785 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1787 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1789 /* no need to redraw if window is not visible */
1790 if (redraw
&& !is_visible( win
)) redraw
= 0;
1792 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1794 if (win
->win_region
) free_region( win
->win_region
);
1795 win
->win_region
= region
;
1797 /* expose anything revealed by the change */
1798 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1800 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1801 free_region( exposed_rgn
);
1804 if (old_vis_rgn
) free_region( old_vis_rgn
);
1805 clear_error(); /* we ignore out of memory errors since the region has been set */
1809 /* destroy a window */
1810 void destroy_window( struct window
*win
)
1812 /* hide the window */
1813 if (is_visible(win
))
1815 struct region
*vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1816 win
->style
&= ~WS_VISIBLE
;
1819 struct region
*exposed_rgn
= expose_window( win
, &win
->window_rect
, vis_rgn
);
1820 if (exposed_rgn
) free_region( exposed_rgn
);
1821 free_region( vis_rgn
);
1823 validate_whole_window( win
);
1824 validate_children( win
);
1827 /* destroy all children */
1828 while (!list_empty(&win
->children
))
1829 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
1830 while (!list_empty(&win
->unlinked
))
1831 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
1833 /* reset global window pointers, if the corresponding window is destroyed */
1834 if (win
== shell_window
) shell_window
= NULL
;
1835 if (win
== shell_listview
) shell_listview
= NULL
;
1836 if (win
== progman_window
) progman_window
= NULL
;
1837 if (win
== taskman_window
) taskman_window
= NULL
;
1838 free_hotkeys( win
->desktop
, win
->handle
);
1839 free_user_handle( win
->handle
);
1840 destroy_properties( win
);
1841 list_remove( &win
->entry
);
1842 if (is_desktop_window(win
))
1844 struct desktop
*desktop
= win
->desktop
;
1845 assert( desktop
->top_window
== win
|| desktop
->msg_window
== win
);
1846 if (desktop
->top_window
== win
) desktop
->top_window
= NULL
;
1847 else desktop
->msg_window
= NULL
;
1849 detach_window_thread( win
);
1850 if (win
->win_region
) free_region( win
->win_region
);
1851 if (win
->update_region
) free_region( win
->update_region
);
1852 if (win
->class) release_class( win
->class );
1854 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
1859 /* create a window */
1860 DECL_HANDLER(create_window
)
1862 struct window
*win
, *parent
= NULL
, *owner
= NULL
;
1863 struct unicode_str cls_name
;
1867 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1871 if (!(owner
= get_window( req
->owner
))) return;
1872 if (is_desktop_window(owner
)) owner
= NULL
;
1873 else if (parent
&& !is_desktop_window(parent
))
1875 /* an owned window must be created as top-level */
1876 set_error( STATUS_ACCESS_DENIED
);
1879 else /* owner must be a top-level window */
1880 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1883 get_req_unicode_str( &cls_name
);
1884 atom
= cls_name
.len
? find_global_atom( NULL
, &cls_name
) : req
->atom
;
1886 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1888 reply
->handle
= win
->handle
;
1889 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1890 reply
->owner
= win
->owner
;
1891 reply
->extra
= win
->nb_extra_bytes
;
1892 reply
->class_ptr
= get_class_client_ptr( win
->class );
1896 /* set the parent of a window */
1897 DECL_HANDLER(set_parent
)
1899 struct window
*win
, *parent
= NULL
;
1901 if (!(win
= get_window( req
->handle
))) return;
1902 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1904 if (is_desktop_window(win
))
1906 set_error( STATUS_INVALID_PARAMETER
);
1909 reply
->old_parent
= win
->parent
->handle
;
1910 reply
->full_parent
= parent
? parent
->handle
: 0;
1911 set_parent_window( win
, parent
);
1915 /* destroy a window */
1916 DECL_HANDLER(destroy_window
)
1918 struct window
*win
= get_window( req
->handle
);
1921 if (!is_desktop_window(win
)) destroy_window( win
);
1922 else if (win
->thread
== current
) detach_window_thread( win
);
1923 else set_error( STATUS_ACCESS_DENIED
);
1928 /* retrieve the desktop window for the current thread */
1929 DECL_HANDLER(get_desktop_window
)
1931 struct desktop
*desktop
= get_thread_desktop( current
, 0 );
1933 if (!desktop
) return;
1935 if (!desktop
->top_window
&& req
->force
) /* create it */
1937 if ((desktop
->top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
1939 detach_window_thread( desktop
->top_window
);
1940 desktop
->top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1944 if (!desktop
->msg_window
&& req
->force
) /* create it */
1946 static const WCHAR messageW
[] = {'M','e','s','s','a','g','e'};
1947 static const struct unicode_str name
= { messageW
, sizeof(messageW
) };
1948 atom_t atom
= add_global_atom( NULL
, &name
);
1949 if (atom
&& (desktop
->msg_window
= create_window( NULL
, NULL
, atom
, 0 )))
1951 detach_window_thread( desktop
->msg_window
);
1952 desktop
->msg_window
->style
= WS_POPUP
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1956 reply
->top_window
= desktop
->top_window
? desktop
->top_window
->handle
: 0;
1957 reply
->msg_window
= desktop
->msg_window
? desktop
->msg_window
->handle
: 0;
1958 release_object( desktop
);
1962 /* set a window owner */
1963 DECL_HANDLER(set_window_owner
)
1965 struct window
*win
= get_window( req
->handle
);
1966 struct window
*owner
= NULL
, *ptr
;
1969 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1970 if (is_desktop_window(win
))
1972 set_error( STATUS_ACCESS_DENIED
);
1976 /* make sure owner is not a successor of window */
1977 for (ptr
= owner
; ptr
; ptr
= ptr
->owner
? get_window( ptr
->owner
) : NULL
)
1981 set_error( STATUS_INVALID_PARAMETER
);
1986 reply
->prev_owner
= win
->owner
;
1987 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1991 /* get information from a window handle */
1992 DECL_HANDLER(get_window_info
)
1994 struct window
*win
= get_window( req
->handle
);
1996 reply
->full_handle
= 0;
1997 reply
->tid
= reply
->pid
= 0;
2000 reply
->full_handle
= win
->handle
;
2001 reply
->last_active
= win
->handle
;
2002 reply
->is_unicode
= win
->is_unicode
;
2003 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
2006 reply
->tid
= get_thread_id( win
->thread
);
2007 reply
->pid
= get_process_id( win
->thread
->process
);
2008 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
2014 /* set some information in a window */
2015 DECL_HANDLER(set_window_info
)
2017 struct window
*win
= get_window( req
->handle
);
2020 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
2022 set_error( STATUS_ACCESS_DENIED
);
2025 if (req
->extra_size
> sizeof(req
->extra_value
) ||
2026 req
->extra_offset
< -1 ||
2027 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
2029 set_win32_error( ERROR_INVALID_INDEX
);
2032 if (req
->extra_offset
!= -1)
2034 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
2036 else if (req
->flags
& SET_WIN_EXTRA
)
2038 set_win32_error( ERROR_INVALID_INDEX
);
2041 reply
->old_style
= win
->style
;
2042 reply
->old_ex_style
= win
->ex_style
;
2043 reply
->old_id
= win
->id
;
2044 reply
->old_instance
= win
->instance
;
2045 reply
->old_user_data
= win
->user_data
;
2046 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
2047 if (req
->flags
& SET_WIN_EXSTYLE
)
2049 /* WS_EX_TOPMOST can only be changed for unlinked windows */
2050 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
2051 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
2052 if (!(win
->ex_style
& WS_EX_LAYERED
)) win
->is_layered
= 0;
2054 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
2055 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
2056 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
2057 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
2058 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
2059 &req
->extra_value
, req
->extra_size
);
2061 /* changing window style triggers a non-client paint */
2062 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
2066 /* get a list of the window parents, up to the root of the tree */
2067 DECL_HANDLER(get_window_parents
)
2069 struct window
*ptr
, *win
= get_window( req
->handle
);
2071 user_handle_t
*data
;
2074 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
2076 reply
->count
= total
;
2077 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2078 if (len
&& ((data
= set_reply_data_size( len
))))
2080 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
2081 *data
++ = ptr
->handle
;
2086 /* get a list of the window children */
2087 DECL_HANDLER(get_window_children
)
2089 struct window
*parent
= NULL
;
2091 user_handle_t
*data
;
2093 struct unicode_str cls_name
;
2094 atom_t atom
= req
->atom
;
2095 struct desktop
*desktop
= NULL
;
2097 get_req_unicode_str( &cls_name
);
2098 if (cls_name
.len
&& !(atom
= find_global_atom( NULL
, &cls_name
))) return;
2102 if (!(desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
))) return;
2103 parent
= desktop
->top_window
;
2107 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
2108 if (!parent
&& !(desktop
= get_thread_desktop( current
, 0 ))) return;
2112 total
= get_children_windows( parent
, atom
, req
->tid
, NULL
, 0 );
2114 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
, NULL
, 0 ) +
2115 get_children_windows( desktop
->msg_window
, atom
, req
->tid
, NULL
, 0 );
2117 reply
->count
= total
;
2118 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2119 if (len
&& ((data
= set_reply_data_size( len
))))
2121 if (parent
) get_children_windows( parent
, atom
, req
->tid
, data
, len
/ sizeof(user_handle_t
) );
2124 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
,
2125 data
, len
/ sizeof(user_handle_t
) );
2127 len
-= total
* sizeof(user_handle_t
);
2128 if (len
>= sizeof(user_handle_t
))
2129 get_children_windows( desktop
->msg_window
, atom
, req
->tid
,
2130 data
, len
/ sizeof(user_handle_t
) );
2133 if (desktop
) release_object( desktop
);
2137 /* get a list of the window children that contain a given point */
2138 DECL_HANDLER(get_window_children_from_point
)
2140 struct user_handle_array array
;
2141 struct window
*parent
= get_window( req
->parent
);
2144 if (!parent
) return;
2146 array
.handles
= NULL
;
2149 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
2151 reply
->count
= array
.count
;
2152 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
2153 if (len
) set_reply_data_ptr( array
.handles
, len
);
2154 else free( array
.handles
);
2158 /* get window tree information from a window handle */
2159 DECL_HANDLER(get_window_tree
)
2161 struct window
*ptr
, *win
= get_window( req
->handle
);
2167 reply
->next_sibling
= 0;
2168 reply
->prev_sibling
= 0;
2169 reply
->first_sibling
= 0;
2170 reply
->last_sibling
= 0;
2171 reply
->first_child
= 0;
2172 reply
->last_child
= 0;
2176 struct window
*parent
= win
->parent
;
2177 reply
->parent
= parent
->handle
;
2178 reply
->owner
= win
->owner
;
2181 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
2182 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
2184 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
2185 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
2187 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2188 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2192 /* set the position and Z order of a window */
2193 DECL_HANDLER(set_window_pos
)
2195 rectangle_t window_rect
, client_rect
, visible_rect
;
2196 struct window
*previous
= NULL
;
2197 struct window
*top
, *win
= get_window( req
->handle
);
2198 unsigned int flags
= req
->swp_flags
;
2201 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2203 if (!(flags
& SWP_NOZORDER
))
2205 switch ((int)req
->previous
)
2207 case 0: /* HWND_TOP */
2208 previous
= WINPTR_TOP
;
2210 case 1: /* HWND_BOTTOM */
2211 previous
= WINPTR_BOTTOM
;
2213 case -1: /* HWND_TOPMOST */
2214 previous
= WINPTR_TOPMOST
;
2216 case -2: /* HWND_NOTOPMOST */
2217 previous
= WINPTR_NOTOPMOST
;
2220 if (!(previous
= get_window( req
->previous
))) return;
2221 /* previous must be a sibling */
2222 if (previous
->parent
!= win
->parent
)
2224 set_error( STATUS_INVALID_PARAMETER
);
2229 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2232 /* windows that use UpdateLayeredWindow don't trigger repaints */
2233 if ((win
->ex_style
& WS_EX_LAYERED
) && !win
->is_layered
) flags
|= SWP_NOREDRAW
;
2235 /* window rectangle must be ordered properly */
2236 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2238 set_error( STATUS_INVALID_PARAMETER
);
2242 window_rect
= visible_rect
= req
->window
;
2243 client_rect
= req
->client
;
2244 if (get_req_data_size() >= sizeof(rectangle_t
))
2245 memcpy( &visible_rect
, get_req_data(), sizeof(rectangle_t
) );
2246 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2248 mirror_rect( &win
->parent
->client_rect
, &window_rect
);
2249 mirror_rect( &win
->parent
->client_rect
, &visible_rect
);
2250 mirror_rect( &win
->parent
->client_rect
, &client_rect
);
2253 win
->paint_flags
= (win
->paint_flags
& ~PAINT_CLIENT_FLAGS
) | (req
->paint_flags
& PAINT_CLIENT_FLAGS
);
2254 if (win
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) update_pixel_format_flags( win
);
2256 if (get_req_data_size() >= 3 * sizeof(rectangle_t
))
2258 rectangle_t valid_rects
[2];
2259 memcpy( valid_rects
, (const rectangle_t
*)get_req_data() + 1, 2 * sizeof(rectangle_t
) );
2260 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2262 mirror_rect( &win
->parent
->client_rect
, &valid_rects
[0] );
2263 mirror_rect( &win
->parent
->client_rect
, &valid_rects
[1] );
2265 set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, valid_rects
);
2267 else set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, NULL
);
2269 reply
->new_style
= win
->style
;
2270 reply
->new_ex_style
= win
->ex_style
;
2272 top
= get_top_clipping_window( win
);
2273 if (is_visible( top
) &&
2274 (top
->paint_flags
& PAINT_HAS_SURFACE
) &&
2275 (top
->paint_flags
& PAINT_PIXEL_FORMAT_CHILD
))
2276 reply
->surface_win
= top
->handle
;
2280 /* get the window and client rectangles of a window */
2281 DECL_HANDLER(get_window_rectangles
)
2283 struct window
*win
= get_window( req
->handle
);
2287 reply
->window
= win
->window_rect
;
2288 reply
->visible
= win
->visible_rect
;
2289 reply
->client
= win
->client_rect
;
2291 switch (req
->relative
)
2294 offset_rect( &reply
->window
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2295 offset_rect( &reply
->visible
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2296 offset_rect( &reply
->client
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2297 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2299 mirror_rect( &win
->client_rect
, &reply
->window
);
2300 mirror_rect( &win
->client_rect
, &reply
->visible
);
2304 offset_rect( &reply
->window
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2305 offset_rect( &reply
->visible
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2306 offset_rect( &reply
->client
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2307 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2309 mirror_rect( &win
->window_rect
, &reply
->visible
);
2310 mirror_rect( &win
->window_rect
, &reply
->client
);
2314 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2316 mirror_rect( &win
->parent
->client_rect
, &reply
->window
);
2317 mirror_rect( &win
->parent
->client_rect
, &reply
->visible
);
2318 mirror_rect( &win
->parent
->client_rect
, &reply
->client
);
2322 client_to_screen_rect( win
->parent
, &reply
->window
);
2323 client_to_screen_rect( win
->parent
, &reply
->visible
);
2324 client_to_screen_rect( win
->parent
, &reply
->client
);
2327 set_error( STATUS_INVALID_PARAMETER
);
2333 /* get the window text */
2334 DECL_HANDLER(get_window_text
)
2336 struct window
*win
= get_window( req
->handle
);
2338 if (win
&& win
->text
)
2340 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
2341 if (len
> get_reply_max_size()) len
= get_reply_max_size();
2342 set_reply_data( win
->text
, len
);
2347 /* set the window text */
2348 DECL_HANDLER(set_window_text
)
2350 struct window
*win
= get_window( req
->handle
);
2355 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2358 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2359 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2368 /* get the coordinates offset between two windows */
2369 DECL_HANDLER(get_windows_offset
)
2372 int mirror_from
= 0, mirror_to
= 0;
2374 reply
->x
= reply
->y
= 0;
2377 if (!(win
= get_window( req
->from
))) return;
2378 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2381 reply
->x
+= win
->client_rect
.right
- win
->client_rect
.left
;
2383 while (win
&& !is_desktop_window(win
))
2385 reply
->x
+= win
->client_rect
.left
;
2386 reply
->y
+= win
->client_rect
.top
;
2392 if (!(win
= get_window( req
->to
))) return;
2393 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2396 reply
->x
-= win
->client_rect
.right
- win
->client_rect
.left
;
2398 while (win
&& !is_desktop_window(win
))
2400 reply
->x
-= win
->client_rect
.left
;
2401 reply
->y
-= win
->client_rect
.top
;
2405 if (mirror_from
) reply
->x
= -reply
->x
;
2406 reply
->mirror
= mirror_from
^ mirror_to
;
2410 /* get the visible region of a window */
2411 DECL_HANDLER(get_visible_region
)
2413 struct region
*region
;
2414 struct window
*top
, *win
= get_window( req
->window
);
2418 top
= get_top_clipping_window( win
);
2419 if ((region
= get_visible_region( win
, req
->flags
)))
2422 map_win_region_to_screen( win
, region
);
2423 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2424 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2426 reply
->top_win
= top
->handle
;
2427 reply
->top_rect
= top
->visible_rect
;
2429 if (!is_desktop_window(win
))
2431 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2432 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2433 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2437 reply
->win_rect
.left
= 0;
2438 reply
->win_rect
.top
= 0;
2439 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2440 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2445 /* get the surface visible region of a window */
2446 DECL_HANDLER(get_surface_region
)
2448 struct region
*region
;
2449 struct window
*win
= get_window( req
->window
);
2451 if (!win
|| !is_visible( win
)) return;
2453 if ((region
= get_surface_region( win
)))
2456 if (win
->parent
) map_win_region_to_screen( win
->parent
, region
);
2457 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2458 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2460 reply
->visible_rect
= win
->visible_rect
;
2461 if (win
->parent
) client_to_screen_rect( win
->parent
, &reply
->visible_rect
);
2465 /* get the window region */
2466 DECL_HANDLER(get_window_region
)
2469 struct window
*win
= get_window( req
->window
);
2472 if (!win
->win_region
) return;
2474 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2476 struct region
*region
= create_empty_region();
2478 if (!region
) return;
2479 if (!copy_region( region
, win
->win_region
))
2481 free_region( region
);
2484 mirror_region( &win
->window_rect
, region
);
2485 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2487 else data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2489 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2493 /* set the window region */
2494 DECL_HANDLER(set_window_region
)
2496 struct region
*region
= NULL
;
2497 struct window
*win
= get_window( req
->window
);
2501 if (get_req_data_size()) /* no data means remove the region completely */
2503 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2505 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->window_rect
, region
);
2507 set_window_region( win
, region
, req
->redraw
);
2511 /* get a window update region */
2512 DECL_HANDLER(get_update_region
)
2515 unsigned int flags
= req
->flags
;
2516 struct window
*from_child
= NULL
;
2517 struct window
*win
= get_window( req
->window
);
2522 if (req
->from_child
)
2526 if (!(from_child
= get_window( req
->from_child
))) return;
2528 /* make sure from_child is a child of win */
2530 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2533 set_error( STATUS_INVALID_PARAMETER
);
2538 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2540 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2541 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2544 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2545 reply
->child
= win
->handle
;
2547 if (flags
& UPDATE_NOREGION
) return;
2549 if (win
->update_region
)
2551 /* convert update region to screen coordinates */
2552 struct region
*region
= create_empty_region();
2554 if (!region
) return;
2555 if (!copy_region( region
, win
->update_region
))
2557 free_region( region
);
2560 map_win_region_to_screen( win
, region
);
2561 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2562 &reply
->total_size
))) return;
2563 set_reply_data_ptr( data
, reply
->total_size
);
2566 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2568 validate_parents( win
);
2569 validate_whole_window( win
);
2573 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2574 if (reply
->flags
& UPDATE_ERASE
)
2576 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2577 /* desktop window only gets erased, not repainted */
2578 if (is_desktop_window(win
)) validate_whole_window( win
);
2584 /* update the z order of a window so that a given rectangle is fully visible */
2585 DECL_HANDLER(update_window_zorder
)
2587 rectangle_t tmp
, rect
= req
->rect
;
2588 struct window
*ptr
, *win
= get_window( req
->window
);
2590 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2591 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_rect( &win
->client_rect
, &rect
);
2592 offset_rect( &rect
, win
->client_rect
.left
, win
->client_rect
.top
);
2594 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2596 if (ptr
== win
) break;
2597 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2598 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2599 if (ptr
->is_layered
&& (ptr
->layered_flags
& LWA_COLORKEY
)) continue;
2600 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &rect
)) continue;
2601 if (ptr
->win_region
)
2604 offset_rect( &tmp
, -ptr
->window_rect
.left
, -ptr
->window_rect
.top
);
2605 if (!rect_in_region( ptr
->win_region
, &tmp
)) continue;
2607 /* found a window obscuring the rectangle, now move win above this one */
2608 /* making sure to not violate the topmost rule */
2609 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2611 list_remove( &win
->entry
);
2612 list_add_before( &ptr
->entry
, &win
->entry
);
2619 /* mark parts of a window as needing a redraw */
2620 DECL_HANDLER(redraw_window
)
2622 struct region
*region
= NULL
;
2623 struct window
*win
= get_window( req
->window
);
2626 if (!is_visible( win
)) return; /* nothing to do */
2628 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2630 if (get_req_data_size()) /* no data means whole rectangle */
2632 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2634 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->client_rect
, region
);
2638 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2640 if (region
) free_region( region
);
2644 /* set a window property */
2645 DECL_HANDLER(set_window_property
)
2647 struct unicode_str name
;
2648 struct window
*win
= get_window( req
->window
);
2652 get_req_unicode_str( &name
);
2655 atom_t atom
= add_global_atom( NULL
, &name
);
2658 set_property( win
, atom
, req
->data
, PROP_TYPE_STRING
);
2659 release_global_atom( NULL
, atom
);
2662 else set_property( win
, req
->atom
, req
->data
, PROP_TYPE_ATOM
);
2666 /* remove a window property */
2667 DECL_HANDLER(remove_window_property
)
2669 struct unicode_str name
;
2670 struct window
*win
= get_window( req
->window
);
2672 get_req_unicode_str( &name
);
2675 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2676 if (atom
) reply
->data
= remove_property( win
, atom
);
2681 /* get a window property */
2682 DECL_HANDLER(get_window_property
)
2684 struct unicode_str name
;
2685 struct window
*win
= get_window( req
->window
);
2687 get_req_unicode_str( &name
);
2690 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2691 if (atom
) reply
->data
= get_property( win
, atom
);
2696 /* get the list of properties of a window */
2697 DECL_HANDLER(get_window_properties
)
2699 property_data_t
*data
;
2700 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2701 struct window
*win
= get_window( req
->window
);
2706 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2707 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2708 reply
->total
= count
;
2710 if (count
> max
) count
= max
;
2711 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2713 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2715 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2716 data
->atom
= win
->properties
[i
].atom
;
2717 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2718 data
->data
= win
->properties
[i
].data
;
2725 /* get the new window pointer for a global window, checking permissions */
2726 /* helper for set_global_windows request */
2727 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2736 set_error( STATUS_ACCESS_DENIED
);
2739 *win
= get_window( handle
);
2740 return (*win
!= NULL
);
2743 /* Set/get the global windows */
2744 DECL_HANDLER(set_global_windows
)
2746 struct window
*new_shell_window
= shell_window
;
2747 struct window
*new_shell_listview
= shell_listview
;
2748 struct window
*new_progman_window
= progman_window
;
2749 struct window
*new_taskman_window
= taskman_window
;
2751 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2752 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2753 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2754 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2756 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2758 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2759 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2761 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2763 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2765 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2767 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2769 shell_window
= new_shell_window
;
2770 shell_listview
= new_shell_listview
;
2771 progman_window
= new_progman_window
;
2772 taskman_window
= new_taskman_window
;
2775 /* retrieve layered info for a window */
2776 DECL_HANDLER(get_window_layered_info
)
2778 struct window
*win
= get_window( req
->handle
);
2782 if (win
->is_layered
)
2784 reply
->color_key
= win
->color_key
;
2785 reply
->alpha
= win
->alpha
;
2786 reply
->flags
= win
->layered_flags
;
2788 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
2792 /* set layered info for a window */
2793 DECL_HANDLER(set_window_layered_info
)
2795 struct window
*win
= get_window( req
->handle
);
2799 if (win
->ex_style
& WS_EX_LAYERED
)
2801 if (req
->flags
& LWA_ALPHA
) win
->alpha
= req
->alpha
;
2802 else if (!win
->is_layered
) win
->alpha
= 0; /* alpha init value is 0 */
2804 win
->color_key
= req
->color_key
;
2805 win
->layered_flags
= req
->flags
;
2806 win
->is_layered
= 1;
2808 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);