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
) update_pixel_format_flags( win
);
259 else /* move it to parent unlinked list */
261 list_remove( &win
->entry
); /* unlink it from the previous location */
262 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
268 /* append a user handle to a handle array */
269 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
271 if (array
->count
>= array
->total
)
273 int new_total
= max( array
->total
* 2, 32 );
274 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
277 free( array
->handles
);
278 set_error( STATUS_NO_MEMORY
);
281 array
->handles
= new_array
;
282 array
->total
= new_total
;
284 array
->handles
[array
->count
++] = handle
;
288 /* set a window property */
289 static void set_property( struct window
*win
, atom_t atom
, lparam_t data
, enum property_type type
)
292 struct property
*new_props
;
294 /* check if it exists already */
295 for (i
= 0; i
< win
->prop_inuse
; i
++)
297 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
302 if (win
->properties
[i
].atom
== atom
)
304 win
->properties
[i
].type
= type
;
305 win
->properties
[i
].data
= data
;
310 /* need to add an entry */
311 if (!grab_global_atom( NULL
, atom
)) return;
315 if (win
->prop_inuse
>= win
->prop_alloc
)
317 /* need to grow the array */
318 if (!(new_props
= realloc( win
->properties
,
319 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
321 set_error( STATUS_NO_MEMORY
);
322 release_global_atom( NULL
, atom
);
325 win
->prop_alloc
+= 16;
326 win
->properties
= new_props
;
328 free
= win
->prop_inuse
++;
330 win
->properties
[free
].atom
= atom
;
331 win
->properties
[free
].type
= type
;
332 win
->properties
[free
].data
= data
;
335 /* remove a window property */
336 static lparam_t
remove_property( struct window
*win
, atom_t atom
)
340 for (i
= 0; i
< win
->prop_inuse
; i
++)
342 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
343 if (win
->properties
[i
].atom
== atom
)
345 release_global_atom( NULL
, atom
);
346 win
->properties
[i
].type
= PROP_TYPE_FREE
;
347 return win
->properties
[i
].data
;
350 /* FIXME: last error? */
354 /* find a window property */
355 static lparam_t
get_property( struct window
*win
, atom_t atom
)
359 for (i
= 0; i
< win
->prop_inuse
; i
++)
361 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
362 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].data
;
364 /* FIXME: last error? */
368 /* destroy all properties of a window */
369 static inline void destroy_properties( struct window
*win
)
373 if (!win
->properties
) return;
374 for (i
= 0; i
< win
->prop_inuse
; i
++)
376 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
377 release_global_atom( NULL
, win
->properties
[i
].atom
);
379 free( win
->properties
);
382 /* detach a window from its owner thread but keep the window around */
383 static void detach_window_thread( struct window
*win
)
385 struct thread
*thread
= win
->thread
;
390 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
391 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
392 queue_cleanup_window( thread
, win
->handle
);
394 assert( thread
->desktop_users
> 0 );
395 thread
->desktop_users
--;
396 release_class( win
->class );
399 /* don't hold a reference to the desktop so that the desktop window can be */
400 /* destroyed when the desktop ref count reaches zero */
401 release_object( win
->desktop
);
405 /* get the process owning the top window of a given desktop */
406 struct process
*get_top_window_owner( struct desktop
*desktop
)
408 struct window
*win
= desktop
->top_window
;
409 if (!win
|| !win
->thread
) return NULL
;
410 return win
->thread
->process
;
413 /* get the top window size of a given desktop */
414 void get_top_window_rectangle( struct desktop
*desktop
, rectangle_t
*rect
)
416 struct window
*win
= desktop
->top_window
;
417 if (!win
) rect
->left
= rect
->top
= rect
->right
= rect
->bottom
= 0;
418 else *rect
= win
->window_rect
;
421 /* post a message to the desktop window */
422 void post_desktop_message( struct desktop
*desktop
, unsigned int message
,
423 lparam_t wparam
, lparam_t lparam
)
425 struct window
*win
= desktop
->top_window
;
426 if (win
&& win
->thread
) post_message( win
->handle
, message
, wparam
, lparam
);
429 /* create a new window structure (note: the window is not linked in the window tree) */
430 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
431 atom_t atom
, mod_handle_t instance
)
433 static const rectangle_t empty_rect
;
435 struct window
*win
= NULL
;
436 struct desktop
*desktop
;
437 struct window_class
*class;
439 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
441 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
443 release_object( desktop
);
447 if (!parent
) /* null parent is only allowed for desktop or HWND_MESSAGE top window */
449 if (is_desktop_class( class ))
450 parent
= desktop
->top_window
; /* use existing desktop if any */
451 else if (is_hwnd_message_class( class ))
452 /* use desktop window if message window is already created */
453 parent
= desktop
->msg_window
? desktop
->top_window
: NULL
;
454 else if (!(parent
= desktop
->top_window
)) /* must already have a desktop then */
456 set_error( STATUS_ACCESS_DENIED
);
461 /* parent must be on the same desktop */
462 if (parent
&& parent
->desktop
!= desktop
)
464 set_error( STATUS_ACCESS_DENIED
);
468 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
469 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
471 win
->parent
= parent
;
472 win
->owner
= owner
? owner
->handle
: 0;
473 win
->thread
= current
;
474 win
->desktop
= desktop
;
477 win
->last_active
= win
->handle
;
478 win
->win_region
= NULL
;
479 win
->update_region
= NULL
;
489 win
->paint_flags
= 0;
492 win
->properties
= NULL
;
493 win
->nb_extra_bytes
= extra_bytes
;
494 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
495 memset( win
->extra_bytes
, 0, extra_bytes
);
496 list_init( &win
->children
);
497 list_init( &win
->unlinked
);
499 /* if parent belongs to a different thread and the window isn't */
500 /* top-level, attach the two threads */
501 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
503 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
505 else /* otherwise just make sure that the thread has a message queue */
507 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
510 /* put it on parent unlinked list */
511 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
514 list_init( &win
->entry
);
515 if (is_desktop_class( class ))
517 assert( !desktop
->top_window
);
518 desktop
->top_window
= win
;
519 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
523 assert( !desktop
->msg_window
);
524 desktop
->msg_window
= win
;
528 current
->desktop_users
++;
534 if (win
->handle
) free_user_handle( win
->handle
);
537 release_object( desktop
);
538 release_class( class );
542 /* destroy all windows belonging to a given thread */
543 void destroy_thread_windows( struct thread
*thread
)
545 user_handle_t handle
= 0;
548 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
550 if (win
->thread
!= thread
) continue;
551 if (is_desktop_window( win
)) detach_window_thread( win
);
552 else destroy_window( win
);
556 /* get the desktop window */
557 static struct window
*get_desktop_window( struct thread
*thread
)
559 struct window
*top_window
;
560 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
562 if (!desktop
) return NULL
;
563 top_window
= desktop
->top_window
;
564 release_object( desktop
);
568 /* check whether child is a descendant of parent */
569 int is_child_window( user_handle_t parent
, user_handle_t child
)
571 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
572 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
574 if (!child_ptr
|| !parent_ptr
) return 0;
575 while (child_ptr
->parent
)
577 if (child_ptr
->parent
== parent_ptr
) return 1;
578 child_ptr
= child_ptr
->parent
;
583 /* check whether window is a top-level window */
584 int is_top_level_window( user_handle_t window
)
586 struct window
*win
= get_user_object( window
, USER_WINDOW
);
587 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
590 /* make a window active if possible */
591 int make_window_active( user_handle_t window
)
593 struct window
*owner
, *win
= get_window( window
);
597 /* set last active for window and its owners */
601 owner
->last_active
= win
->handle
;
602 owner
= get_user_object( owner
->owner
, USER_WINDOW
);
607 /* increment (or decrement) the window paint count */
608 static inline void inc_window_paint_count( struct window
*win
, int incr
)
610 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
613 /* check if window and all its ancestors are visible */
614 static int is_visible( const struct window
*win
)
618 if (!(win
->style
& WS_VISIBLE
)) return 0;
620 /* if parent is minimized children are not visible */
621 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
626 /* same as is_visible but takes a window handle */
627 int is_window_visible( user_handle_t window
)
629 struct window
*win
= get_user_object( window
, USER_WINDOW
);
631 return is_visible( win
);
634 int is_window_transparent( user_handle_t window
)
636 struct window
*win
= get_user_object( window
, USER_WINDOW
);
638 return (win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
);
641 /* check if point is inside the window */
642 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
644 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
645 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
646 return 0; /* disabled child */
647 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
648 return 0; /* transparent */
649 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
650 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
651 return 0; /* not in window */
652 if (win
->win_region
&&
653 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
654 return 0; /* not in window region */
658 /* fill an array with the handles of the children of a specified window */
659 static unsigned int get_children_windows( struct window
*parent
, atom_t atom
, thread_id_t tid
,
660 user_handle_t
*handles
, unsigned int max_count
)
663 unsigned int count
= 0;
665 if (!parent
) return 0;
667 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
669 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
670 if (tid
&& get_thread_id(ptr
->thread
) != tid
) continue;
673 if (count
>= max_count
) break;
674 handles
[count
] = ptr
->handle
;
681 /* find child of 'parent' that contains the given point (in parent-relative coords) */
682 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
686 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
688 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
690 /* if window is minimized or disabled, return at once */
691 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
693 /* if point is not in client area, return at once */
694 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
695 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
698 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
700 return parent
; /* not found any child */
703 /* find all children of 'parent' that contain the given point */
704 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
705 struct user_handle_array
*array
)
709 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
711 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
713 /* if point is in client area, and window is not minimized or disabled, check children */
714 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
715 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
716 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
718 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
719 y
- ptr
->client_rect
.top
, array
))
723 /* now add window to the array */
724 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
729 /* find window containing point (in absolute coords) */
730 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
734 if (!desktop
->top_window
) return 0;
735 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
739 /* return list of all windows containing point (in absolute coords) */
740 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
744 /* make point relative to top window */
745 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
747 x
-= ptr
->client_rect
.left
;
748 y
-= ptr
->client_rect
.top
;
751 if (!is_point_in_window( top
, x
, y
)) return 1;
753 /* if point is in client area, and window is not minimized or disabled, check children */
754 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
755 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
756 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
758 if (!is_desktop_window(top
))
760 x
-= top
->client_rect
.left
;
761 y
-= top
->client_rect
.top
;
763 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
765 /* now add window to the array */
766 if (!add_handle_to_array( array
, top
->handle
)) return 0;
771 /* return the thread owning a window */
772 struct thread
*get_window_thread( user_handle_t handle
)
774 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
775 if (!win
|| !win
->thread
) return NULL
;
776 return (struct thread
*)grab_object( win
->thread
);
780 /* check if any area of a window needs repainting */
781 static inline int win_needs_repaint( struct window
*win
)
783 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
787 /* find a child of the specified window that needs repainting */
788 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
790 struct window
*ptr
, *ret
= NULL
;
792 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
794 if (!(ptr
->style
& WS_VISIBLE
)) continue;
795 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
797 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
798 ret
= find_child_to_repaint( ptr
, thread
);
802 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
804 /* transparent window, check for non-transparent sibling to paint first */
805 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
807 if (!(ptr
->style
& WS_VISIBLE
)) continue;
808 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
809 if (ptr
->thread
!= thread
) continue;
810 if (win_needs_repaint( ptr
)) return ptr
;
817 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
818 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
820 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
);
822 if (!top_window
) return 0;
824 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
825 else win
= find_child_to_repaint( top_window
, thread
);
829 /* check that it is a child of the specified parent */
830 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
831 if (ptr
->handle
== parent
) break;
832 /* otherwise don't return any window, we don't repaint a child before its parent */
833 if (!ptr
) win
= NULL
;
836 win
->paint_flags
&= ~PAINT_INTERNAL
;
841 /* intersect the window region with the specified region, relative to the window parent */
842 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
844 /* make region relative to window rect */
845 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
846 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
847 /* make region relative to parent again */
848 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
853 /* convert coordinates from client to screen coords */
854 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
856 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
858 *x
+= win
->client_rect
.left
;
859 *y
+= win
->client_rect
.top
;
863 /* convert coordinates from client to screen coords */
864 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
866 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
868 rect
->left
+= win
->client_rect
.left
;
869 rect
->right
+= win
->client_rect
.left
;
870 rect
->top
+= win
->client_rect
.top
;
871 rect
->bottom
+= win
->client_rect
.top
;
875 /* map the region from window to screen coordinates */
876 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
878 if (!is_desktop_window(win
))
880 int x
= win
->window_rect
.left
;
881 int y
= win
->window_rect
.top
;
882 client_to_screen( win
->parent
, &x
, &y
);
883 offset_region( region
, x
, y
);
888 /* clip all children of a given window out of the visible region */
889 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
890 struct region
*region
, int offset_x
, int offset_y
)
893 struct region
*tmp
= create_empty_region();
895 if (!tmp
) return NULL
;
896 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
898 if (ptr
== last
) break;
899 if (!(ptr
->style
& WS_VISIBLE
)) continue;
900 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
901 set_region_rect( tmp
, &ptr
->visible_rect
);
902 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
907 offset_region( tmp
, offset_x
, offset_y
);
908 if (!(region
= subtract_region( region
, region
, tmp
))) break;
909 if (is_region_empty( region
)) break;
916 /* offset the coordinates of a rectangle */
917 static inline void offset_rect( rectangle_t
*rect
, int offset_x
, int offset_y
)
919 rect
->left
+= offset_x
;
920 rect
->top
+= offset_y
;
921 rect
->right
+= offset_x
;
922 rect
->bottom
+= offset_y
;
926 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
927 static void set_region_client_rect( struct region
*region
, struct window
*win
)
931 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
932 set_region_rect( region
, &rect
);
936 /* get the top-level window to clip against for a given window */
937 static inline struct window
*get_top_clipping_window( struct window
*win
)
939 while (!(win
->paint_flags
& PAINT_HAS_SURFACE
) && win
->parent
&& !is_desktop_window(win
->parent
))
945 /* compute the visible region of a window, in window coordinates */
946 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
948 struct region
*tmp
= NULL
, *region
;
949 int offset_x
, offset_y
;
951 if (!(region
= create_empty_region())) return NULL
;
953 /* first check if all ancestors are visible */
955 if (!is_visible( win
)) return region
; /* empty region */
957 /* create a region relative to the window itself */
959 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
961 set_region_client_rect( region
, win
->parent
);
962 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
964 else if (flags
& DCX_WINDOW
)
966 set_region_rect( region
, &win
->visible_rect
);
967 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
971 set_region_client_rect( region
, win
);
972 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
977 if (flags
& DCX_CLIPCHILDREN
)
979 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
982 offset_x
= win
->client_rect
.left
;
983 offset_y
= win
->client_rect
.top
;
985 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
988 /* clip siblings of ancestors */
990 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
993 offset_x
= win
->window_rect
.left
;
994 offset_y
= win
->window_rect
.top
;
997 if ((tmp
= create_empty_region()) != NULL
)
1001 /* we don't clip out top-level siblings as that's up to the native windowing system */
1002 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
1004 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
1005 if (is_region_empty( region
)) break;
1007 /* clip to parent client area */
1009 if (!is_desktop_window(win
))
1011 offset_x
+= win
->client_rect
.left
;
1012 offset_y
+= win
->client_rect
.top
;
1013 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
1015 set_region_client_rect( tmp
, win
);
1016 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
1017 if (!intersect_region( region
, region
, tmp
)) goto error
;
1018 if (is_region_empty( region
)) break;
1022 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
1026 if (tmp
) free_region( tmp
);
1027 free_region( region
);
1032 /* clip all children with a custom pixel format out of the visible region */
1033 static struct region
*clip_pixel_format_children( struct window
*parent
, struct region
*parent_clip
,
1034 struct region
*region
, int offset_x
, int offset_y
)
1037 struct region
*clip
= create_empty_region();
1039 if (!clip
) return NULL
;
1041 LIST_FOR_EACH_ENTRY_REV( ptr
, &parent
->children
, struct window
, entry
)
1043 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1044 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
1046 /* add the visible rect */
1047 set_region_rect( clip
, &ptr
->visible_rect
);
1048 if (ptr
->win_region
&& !intersect_window_region( clip
, ptr
)) break;
1049 offset_region( clip
, offset_x
, offset_y
);
1050 if (!intersect_region( clip
, clip
, parent_clip
)) break;
1051 if (!union_region( region
, region
, clip
)) break;
1052 if (!(ptr
->paint_flags
& (PAINT_HAS_PIXEL_FORMAT
| PAINT_PIXEL_FORMAT_CHILD
))) continue;
1054 /* subtract the client rect if it uses a custom pixel format */
1055 set_region_rect( clip
, &ptr
->client_rect
);
1056 if (ptr
->win_region
&& !intersect_window_region( clip
, ptr
)) break;
1057 offset_region( clip
, offset_x
, offset_y
);
1058 if (!intersect_region( clip
, clip
, parent_clip
)) break;
1059 if ((ptr
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) && !subtract_region( region
, region
, clip
))
1062 if (!clip_pixel_format_children( ptr
, clip
, region
, offset_x
+ ptr
->client_rect
.left
,
1063 offset_y
+ ptr
->client_rect
.top
))
1066 free_region( clip
);
1071 /* compute the visible surface region of a window, in parent coordinates */
1072 static struct region
*get_surface_region( struct window
*win
)
1074 struct region
*region
, *clip
;
1075 int offset_x
, offset_y
;
1077 /* create a region relative to the window itself */
1079 if (!(region
= create_empty_region())) return NULL
;
1080 if (!(clip
= create_empty_region())) goto error
;
1081 set_region_rect( region
, &win
->visible_rect
);
1082 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
1083 set_region_rect( clip
, &win
->client_rect
);
1084 if (win
->win_region
&& !intersect_window_region( clip
, win
)) goto error
;
1088 if (!is_desktop_window(win
))
1090 offset_x
= win
->client_rect
.left
;
1091 offset_y
= win
->client_rect
.top
;
1093 else offset_x
= offset_y
= 0;
1095 if (!clip_pixel_format_children( win
, clip
, region
, offset_x
, offset_y
)) goto error
;
1097 free_region( clip
);
1101 if (clip
) free_region( clip
);
1102 free_region( region
);
1107 /* get the window class of a window */
1108 struct window_class
* get_window_class( user_handle_t window
)
1111 if (!(win
= get_window( window
))) return NULL
;
1112 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1116 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1117 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1118 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1120 int offset_x
= 0, offset_y
= 0;
1122 if (!(win
->style
& WS_VISIBLE
)) return 0;
1124 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1125 if (!is_desktop_window(win
))
1127 offset_x
= win
->window_rect
.left
;
1128 offset_y
= win
->window_rect
.top
;
1134 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1135 if (!is_desktop_window(win
))
1137 offset_x
+= win
->client_rect
.left
;
1138 offset_y
+= win
->client_rect
.top
;
1139 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1141 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1142 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1144 offset_rect( rect
, -offset_x
, -offset_y
);
1148 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1149 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1150 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1155 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1156 if (!(tmp
= create_empty_region())) return NULL
;
1157 set_region_rect( tmp
, &rect
);
1161 /* map it to client coords */
1162 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1163 win
->window_rect
.top
- win
->client_rect
.top
);
1165 /* intersect specified region with bounding rect */
1166 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1167 if (is_region_empty( tmp
)) goto done
;
1169 /* map it back to window coords */
1170 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1171 win
->client_rect
.top
- win
->window_rect
.top
);
1181 /* set a region as new update region for the window */
1182 static void set_update_region( struct window
*win
, struct region
*region
)
1184 if (region
&& !is_region_empty( region
))
1186 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1187 else free_region( win
->update_region
);
1188 win
->update_region
= region
;
1192 if (win
->update_region
)
1194 inc_window_paint_count( win
, -1 );
1195 free_region( win
->update_region
);
1197 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1198 win
->update_region
= NULL
;
1199 if (region
) free_region( region
);
1204 /* add a region to the update region; the passed region is freed or reused */
1205 static int add_update_region( struct window
*win
, struct region
*region
)
1207 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1209 free_region( region
);
1212 set_update_region( win
, region
);
1217 /* crop the update region of children to the specified rectangle, in client coords */
1218 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1220 struct window
*child
;
1222 rectangle_t child_rect
;
1224 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1226 if (!(child
->style
& WS_VISIBLE
)) continue;
1227 if (!rect
) /* crop everything out */
1229 crop_children_update_region( child
, NULL
);
1230 set_update_region( child
, NULL
);
1234 /* nothing to do if child is completely inside rect */
1235 if (child
->window_rect
.left
>= rect
->left
&&
1236 child
->window_rect
.top
>= rect
->top
&&
1237 child
->window_rect
.right
<= rect
->right
&&
1238 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1240 /* map to child client coords and crop grand-children */
1242 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1243 crop_children_update_region( child
, &child_rect
);
1245 /* now crop the child itself */
1246 if (!child
->update_region
) continue;
1247 if (!(tmp
= create_empty_region())) continue;
1248 set_region_rect( tmp
, rect
);
1249 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1250 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1251 else free_region( tmp
);
1256 /* validate the non client area of a window */
1257 static void validate_non_client( struct window
*win
)
1262 if (!win
->update_region
) return; /* nothing to do */
1264 /* get client rect in window coords */
1265 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1266 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1267 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1268 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1270 if ((tmp
= create_empty_region()))
1272 set_region_rect( tmp
, &rect
);
1273 if (intersect_region( tmp
, win
->update_region
, tmp
))
1274 set_update_region( win
, tmp
);
1278 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1282 /* validate a window completely so that we don't get any further paint messages for it */
1283 static void validate_whole_window( struct window
*win
)
1285 set_update_region( win
, NULL
);
1287 if (win
->paint_flags
& PAINT_INTERNAL
)
1289 win
->paint_flags
&= ~PAINT_INTERNAL
;
1290 inc_window_paint_count( win
, -1 );
1295 /* validate a window's children so that we don't get any further paint messages for it */
1296 static void validate_children( struct window
*win
)
1298 struct window
*child
;
1300 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1302 if (!(child
->style
& WS_VISIBLE
)) continue;
1303 validate_children(child
);
1304 validate_whole_window(child
);
1309 /* validate the update region of a window on all parents; helper for get_update_region */
1310 static void validate_parents( struct window
*child
)
1312 int offset_x
= 0, offset_y
= 0;
1313 struct window
*win
= child
;
1314 struct region
*tmp
= NULL
;
1316 if (!child
->update_region
) return;
1320 /* map to parent client coords */
1321 offset_x
+= win
->window_rect
.left
;
1322 offset_y
+= win
->window_rect
.top
;
1326 /* and now map to window coords */
1327 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1328 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1330 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1332 if (!tmp
&& !(tmp
= create_empty_region())) return;
1333 offset_region( child
->update_region
, offset_x
, offset_y
);
1334 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1336 set_update_region( win
, tmp
);
1339 /* restore child coords */
1340 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1343 if (tmp
) free_region( tmp
);
1347 /* add/subtract a region (in client coordinates) to the update region of the window */
1348 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1351 struct window
*child
;
1353 if (flags
& RDW_INVALIDATE
)
1355 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1357 if (!add_update_region( win
, tmp
)) return;
1359 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1360 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1362 else if (flags
& RDW_VALIDATE
)
1364 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1366 set_update_region( win
, NULL
);
1368 else if (win
->update_region
)
1370 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1372 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1377 set_update_region( win
, tmp
);
1379 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1380 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1384 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1386 win
->paint_flags
|= PAINT_INTERNAL
;
1387 inc_window_paint_count( win
, 1 );
1389 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1391 win
->paint_flags
&= ~PAINT_INTERNAL
;
1392 inc_window_paint_count( win
, -1 );
1395 /* now process children recursively */
1397 if (flags
& RDW_NOCHILDREN
) return;
1398 if (win
->style
& WS_MINIMIZE
) return;
1399 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1401 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1403 /* map to client coordinates */
1404 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1405 win
->window_rect
.top
- win
->client_rect
.top
);
1407 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1409 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1411 if (!(child
->style
& WS_VISIBLE
)) continue;
1412 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1413 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1414 redraw_window( child
, tmp
, 1, flags
);
1415 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1421 /* retrieve the update flags for a window depending on the state of the update region */
1422 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1424 unsigned int ret
= 0;
1426 if (flags
& UPDATE_NONCLIENT
)
1428 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1430 if (flags
& UPDATE_ERASE
)
1432 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1434 if (flags
& UPDATE_PAINT
)
1436 if (win
->update_region
)
1438 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1439 ret
|= UPDATE_PAINT
;
1442 if (flags
& UPDATE_INTERNALPAINT
)
1444 if (win
->paint_flags
& PAINT_INTERNAL
)
1446 ret
|= UPDATE_INTERNALPAINT
;
1447 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1454 /* iterate through the children of the given window until we find one with some update flags */
1455 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1456 unsigned int flags
, struct window
**child
)
1459 unsigned int ret
= 0;
1461 /* first make sure we want to iterate children at all */
1463 if (win
->style
& WS_MINIMIZE
) return 0;
1465 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1466 * here we only want to repaint children of windows that clip them, others
1467 * need to wait for WM_PAINT to be done in the parent first.
1469 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1471 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1473 if (from_child
) /* skip all children until from_child is found */
1475 if (ptr
== from_child
) from_child
= NULL
;
1478 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1479 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1484 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1489 /* iterate through children and siblings of the given window until we find one with some update flags */
1490 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1491 unsigned int flags
, struct window
**child
)
1494 struct window
*ptr
, *from_sibling
= NULL
;
1496 /* if some parent is not visible start from the next sibling */
1498 if (!is_visible( win
)) return 0;
1499 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1501 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1502 if (ptr
== win
) break;
1505 /* non-client painting must be delayed if one of the parents is going to
1506 * be repainted and doesn't clip children */
1508 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1510 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1512 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1515 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1517 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1519 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1520 if (ptr
== win
) break;
1526 /* check window itself (only if not restarting from a child) */
1530 if ((ret
= get_update_flags( win
, flags
)))
1538 /* now check children */
1540 if (flags
& UPDATE_NOCHILDREN
) return 0;
1543 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1544 from_sibling
= from_child
;
1547 /* then check siblings and parent siblings */
1549 while (from_sibling
->parent
&& from_sibling
!= win
)
1551 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1553 from_sibling
= from_sibling
->parent
;
1559 /* expose the areas revealed by a vis region change on the window parent */
1560 /* returns the region exposed on the window itself (in client coordinates) */
1561 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1562 struct region
*old_vis_rgn
)
1564 struct region
*new_vis_rgn
, *exposed_rgn
;
1566 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1568 if ((exposed_rgn
= create_empty_region()))
1570 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1572 /* make it relative to the new client area */
1573 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1574 win
->window_rect
.top
- win
->client_rect
.top
);
1578 free_region( exposed_rgn
);
1585 /* make it relative to the old window pos for subtracting */
1586 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1587 win
->window_rect
.top
- old_window_rect
->top
);
1589 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1590 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1591 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1593 if (!is_region_empty( new_vis_rgn
))
1595 /* make it relative to parent */
1596 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1597 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1601 free_region( new_vis_rgn
);
1606 /* set the window and client rectangles, updating the update region if necessary */
1607 static void set_window_pos( struct window
*win
, struct window
*previous
,
1608 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1609 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1610 const rectangle_t
*valid_rects
)
1612 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1613 const rectangle_t old_window_rect
= win
->window_rect
;
1614 const rectangle_t old_visible_rect
= win
->visible_rect
;
1615 const rectangle_t old_client_rect
= win
->client_rect
;
1617 int client_changed
, frame_changed
;
1618 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1620 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1622 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1624 /* set the new window info before invalidating anything */
1626 win
->window_rect
= *window_rect
;
1627 win
->visible_rect
= *visible_rect
;
1628 win
->client_rect
= *client_rect
;
1629 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1630 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1631 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1633 /* keep children at the same position relative to top right corner when the parent is mirrored */
1634 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
1636 struct window
*child
;
1637 int old_size
= old_client_rect
.right
- old_client_rect
.left
;
1638 int new_size
= win
->client_rect
.right
- win
->client_rect
.left
;
1640 if (old_size
!= new_size
) LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1642 offset_rect( &child
->window_rect
, new_size
- old_size
, 0 );
1643 offset_rect( &child
->visible_rect
, new_size
- old_size
, 0 );
1644 offset_rect( &child
->client_rect
, new_size
- old_size
, 0 );
1648 /* reset cursor clip rectangle when the desktop changes size */
1649 if (win
== win
->desktop
->top_window
) win
->desktop
->cursor
.clip
= *window_rect
;
1651 /* if the window is not visible, everything is easy */
1652 if (!visible
) return;
1654 /* expose anything revealed by the change */
1656 if (!(swp_flags
& SWP_NOREDRAW
))
1657 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1659 if (!(win
->style
& WS_VISIBLE
))
1661 /* clear the update region since the window is no longer visible */
1662 validate_whole_window( win
);
1663 validate_children( win
);
1667 /* crop update region to the new window rect */
1669 if (win
->update_region
)
1671 if (get_window_visible_rect( win
, &rect
, 1 ))
1673 struct region
*tmp
= create_empty_region();
1676 set_region_rect( tmp
, &rect
);
1677 if (intersect_region( tmp
, win
->update_region
, tmp
))
1678 set_update_region( win
, tmp
);
1683 else set_update_region( win
, NULL
); /* visible rect is empty */
1686 /* crop children regions to the new window rect */
1688 if (get_window_visible_rect( win
, &rect
, 0 ))
1690 /* map to client coords */
1691 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1692 win
->window_rect
.top
- win
->client_rect
.top
);
1693 crop_children_update_region( win
, &rect
);
1695 else crop_children_update_region( win
, NULL
);
1697 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1699 /* expose the whole non-client area if it changed in any way */
1701 if (swp_flags
& SWP_NOCOPYBITS
)
1703 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1704 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1705 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1706 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1710 /* assume the bits have been moved to follow the window rect */
1711 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1712 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1713 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1714 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1715 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1716 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1717 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1718 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1719 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1720 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1721 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1722 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1723 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1725 memcmp( &valid_rects
[0], client_rect
, sizeof(*client_rect
) ));
1726 /* if part of the non-client area was exposed, consider it changed */
1727 if (exposed_rgn
&& !frame_changed
)
1729 get_region_extents( exposed_rgn
, &rect
);
1730 offset_rect( &rect
, client_rect
->left
, client_rect
->top
);
1731 frame_changed
= (rect
.left
< client_rect
->left
|| rect
.top
< client_rect
->top
||
1732 rect
.right
> client_rect
->right
|| rect
.bottom
> client_rect
->bottom
);
1736 if (frame_changed
|| client_changed
)
1738 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1740 set_region_rect( win_rgn
, window_rect
);
1743 /* subtract the valid portion of client rect from the total region */
1744 struct region
*tmp
= create_empty_region();
1747 set_region_rect( tmp
, &valid_rects
[0] );
1748 /* subtract update region since invalid parts of the valid rect won't be copied */
1749 if (win
->update_region
)
1751 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1752 subtract_region( tmp
, tmp
, win
->update_region
);
1753 offset_region( tmp
, window_rect
->left
, window_rect
->top
);
1755 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1756 else free_region( tmp
);
1759 if (!is_desktop_window(win
))
1760 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1763 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1764 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1768 exposed_rgn
= win_rgn
;
1769 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1774 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1777 if (old_vis_rgn
) free_region( old_vis_rgn
);
1778 if (exposed_rgn
) free_region( exposed_rgn
);
1779 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1783 /* set the window region, updating the update region if necessary */
1784 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1786 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1788 /* no need to redraw if window is not visible */
1789 if (redraw
&& !is_visible( win
)) redraw
= 0;
1791 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1793 if (win
->win_region
) free_region( win
->win_region
);
1794 win
->win_region
= region
;
1796 /* expose anything revealed by the change */
1797 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1799 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1800 free_region( exposed_rgn
);
1803 if (old_vis_rgn
) free_region( old_vis_rgn
);
1804 clear_error(); /* we ignore out of memory errors since the region has been set */
1808 /* destroy a window */
1809 void destroy_window( struct window
*win
)
1811 /* hide the window */
1812 if (is_visible(win
))
1814 struct region
*vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1815 win
->style
&= ~WS_VISIBLE
;
1818 struct region
*exposed_rgn
= expose_window( win
, &win
->window_rect
, vis_rgn
);
1819 if (exposed_rgn
) free_region( exposed_rgn
);
1820 free_region( vis_rgn
);
1822 validate_whole_window( win
);
1823 validate_children( win
);
1826 /* destroy all children */
1827 while (!list_empty(&win
->children
))
1828 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
1829 while (!list_empty(&win
->unlinked
))
1830 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
1832 /* reset global window pointers, if the corresponding window is destroyed */
1833 if (win
== shell_window
) shell_window
= NULL
;
1834 if (win
== shell_listview
) shell_listview
= NULL
;
1835 if (win
== progman_window
) progman_window
= NULL
;
1836 if (win
== taskman_window
) taskman_window
= NULL
;
1837 free_hotkeys( win
->desktop
, win
->handle
);
1838 free_user_handle( win
->handle
);
1839 destroy_properties( win
);
1840 list_remove( &win
->entry
);
1841 if (is_desktop_window(win
))
1843 struct desktop
*desktop
= win
->desktop
;
1844 assert( desktop
->top_window
== win
|| desktop
->msg_window
== win
);
1845 if (desktop
->top_window
== win
) desktop
->top_window
= NULL
;
1846 else desktop
->msg_window
= NULL
;
1848 detach_window_thread( win
);
1849 if (win
->win_region
) free_region( win
->win_region
);
1850 if (win
->update_region
) free_region( win
->update_region
);
1851 if (win
->class) release_class( win
->class );
1853 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
1858 /* create a window */
1859 DECL_HANDLER(create_window
)
1861 struct window
*win
, *parent
= NULL
, *owner
= NULL
;
1862 struct unicode_str cls_name
;
1866 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1870 if (!(owner
= get_window( req
->owner
))) return;
1871 if (is_desktop_window(owner
)) owner
= NULL
;
1872 else if (parent
&& !is_desktop_window(parent
))
1874 /* an owned window must be created as top-level */
1875 set_error( STATUS_ACCESS_DENIED
);
1878 else /* owner must be a top-level window */
1879 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1882 get_req_unicode_str( &cls_name
);
1883 atom
= cls_name
.len
? find_global_atom( NULL
, &cls_name
) : req
->atom
;
1885 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1887 reply
->handle
= win
->handle
;
1888 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1889 reply
->owner
= win
->owner
;
1890 reply
->extra
= win
->nb_extra_bytes
;
1891 reply
->class_ptr
= get_class_client_ptr( win
->class );
1895 /* set the parent of a window */
1896 DECL_HANDLER(set_parent
)
1898 struct window
*win
, *parent
= NULL
;
1900 if (!(win
= get_window( req
->handle
))) return;
1901 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1903 if (is_desktop_window(win
))
1905 set_error( STATUS_INVALID_PARAMETER
);
1908 reply
->old_parent
= win
->parent
->handle
;
1909 reply
->full_parent
= parent
? parent
->handle
: 0;
1910 set_parent_window( win
, parent
);
1914 /* destroy a window */
1915 DECL_HANDLER(destroy_window
)
1917 struct window
*win
= get_window( req
->handle
);
1920 if (!is_desktop_window(win
)) destroy_window( win
);
1921 else if (win
->thread
== current
) detach_window_thread( win
);
1922 else set_error( STATUS_ACCESS_DENIED
);
1927 /* retrieve the desktop window for the current thread */
1928 DECL_HANDLER(get_desktop_window
)
1930 struct desktop
*desktop
= get_thread_desktop( current
, 0 );
1932 if (!desktop
) return;
1934 if (!desktop
->top_window
&& req
->force
) /* create it */
1936 if ((desktop
->top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
1938 detach_window_thread( desktop
->top_window
);
1939 desktop
->top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1943 if (!desktop
->msg_window
&& req
->force
) /* create it */
1945 static const WCHAR messageW
[] = {'M','e','s','s','a','g','e'};
1946 static const struct unicode_str name
= { messageW
, sizeof(messageW
) };
1947 atom_t atom
= add_global_atom( NULL
, &name
);
1948 if (atom
&& (desktop
->msg_window
= create_window( NULL
, NULL
, atom
, 0 )))
1950 detach_window_thread( desktop
->msg_window
);
1951 desktop
->msg_window
->style
= WS_POPUP
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1955 reply
->top_window
= desktop
->top_window
? desktop
->top_window
->handle
: 0;
1956 reply
->msg_window
= desktop
->msg_window
? desktop
->msg_window
->handle
: 0;
1957 release_object( desktop
);
1961 /* set a window owner */
1962 DECL_HANDLER(set_window_owner
)
1964 struct window
*win
= get_window( req
->handle
);
1965 struct window
*owner
= NULL
, *ptr
;
1968 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1969 if (is_desktop_window(win
))
1971 set_error( STATUS_ACCESS_DENIED
);
1975 /* make sure owner is not a successor of window */
1976 for (ptr
= owner
; ptr
; ptr
= ptr
->owner
? get_window( ptr
->owner
) : NULL
)
1980 set_error( STATUS_INVALID_PARAMETER
);
1985 reply
->prev_owner
= win
->owner
;
1986 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1990 /* get information from a window handle */
1991 DECL_HANDLER(get_window_info
)
1993 struct window
*win
= get_window( req
->handle
);
1995 reply
->full_handle
= 0;
1996 reply
->tid
= reply
->pid
= 0;
1999 reply
->full_handle
= win
->handle
;
2000 reply
->last_active
= win
->handle
;
2001 reply
->is_unicode
= win
->is_unicode
;
2002 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
2005 reply
->tid
= get_thread_id( win
->thread
);
2006 reply
->pid
= get_process_id( win
->thread
->process
);
2007 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
2013 /* set some information in a window */
2014 DECL_HANDLER(set_window_info
)
2016 struct window
*win
= get_window( req
->handle
);
2019 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
2021 set_error( STATUS_ACCESS_DENIED
);
2024 if (req
->extra_size
> sizeof(req
->extra_value
) ||
2025 req
->extra_offset
< -1 ||
2026 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
2028 set_win32_error( ERROR_INVALID_INDEX
);
2031 if (req
->extra_offset
!= -1)
2033 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
2035 else if (req
->flags
& SET_WIN_EXTRA
)
2037 set_win32_error( ERROR_INVALID_INDEX
);
2040 reply
->old_style
= win
->style
;
2041 reply
->old_ex_style
= win
->ex_style
;
2042 reply
->old_id
= win
->id
;
2043 reply
->old_instance
= win
->instance
;
2044 reply
->old_user_data
= win
->user_data
;
2045 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
2046 if (req
->flags
& SET_WIN_EXSTYLE
)
2048 /* WS_EX_TOPMOST can only be changed for unlinked windows */
2049 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
2050 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
2051 if (!(win
->ex_style
& WS_EX_LAYERED
)) win
->is_layered
= 0;
2053 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
2054 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
2055 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
2056 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
2057 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
2058 &req
->extra_value
, req
->extra_size
);
2060 /* changing window style triggers a non-client paint */
2061 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
2065 /* get a list of the window parents, up to the root of the tree */
2066 DECL_HANDLER(get_window_parents
)
2068 struct window
*ptr
, *win
= get_window( req
->handle
);
2070 user_handle_t
*data
;
2073 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
2075 reply
->count
= total
;
2076 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2077 if (len
&& ((data
= set_reply_data_size( len
))))
2079 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
2080 *data
++ = ptr
->handle
;
2085 /* get a list of the window children */
2086 DECL_HANDLER(get_window_children
)
2088 struct window
*parent
= NULL
;
2090 user_handle_t
*data
;
2092 struct unicode_str cls_name
;
2093 atom_t atom
= req
->atom
;
2094 struct desktop
*desktop
= NULL
;
2096 get_req_unicode_str( &cls_name
);
2097 if (cls_name
.len
&& !(atom
= find_global_atom( NULL
, &cls_name
))) return;
2101 if (!(desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
))) return;
2102 parent
= desktop
->top_window
;
2106 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
2107 if (!parent
&& !(desktop
= get_thread_desktop( current
, 0 ))) return;
2111 total
= get_children_windows( parent
, atom
, req
->tid
, NULL
, 0 );
2113 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
, NULL
, 0 ) +
2114 get_children_windows( desktop
->msg_window
, atom
, req
->tid
, NULL
, 0 );
2116 reply
->count
= total
;
2117 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2118 if (len
&& ((data
= set_reply_data_size( len
))))
2120 if (parent
) get_children_windows( parent
, atom
, req
->tid
, data
, len
/ sizeof(user_handle_t
) );
2123 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
,
2124 data
, len
/ sizeof(user_handle_t
) );
2126 len
-= total
* sizeof(user_handle_t
);
2127 if (len
>= sizeof(user_handle_t
))
2128 get_children_windows( desktop
->msg_window
, atom
, req
->tid
,
2129 data
, len
/ sizeof(user_handle_t
) );
2132 if (desktop
) release_object( desktop
);
2136 /* get a list of the window children that contain a given point */
2137 DECL_HANDLER(get_window_children_from_point
)
2139 struct user_handle_array array
;
2140 struct window
*parent
= get_window( req
->parent
);
2143 if (!parent
) return;
2145 array
.handles
= NULL
;
2148 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
2150 reply
->count
= array
.count
;
2151 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
2152 if (len
) set_reply_data_ptr( array
.handles
, len
);
2153 else free( array
.handles
);
2157 /* get window tree information from a window handle */
2158 DECL_HANDLER(get_window_tree
)
2160 struct window
*ptr
, *win
= get_window( req
->handle
);
2166 reply
->next_sibling
= 0;
2167 reply
->prev_sibling
= 0;
2168 reply
->first_sibling
= 0;
2169 reply
->last_sibling
= 0;
2170 reply
->first_child
= 0;
2171 reply
->last_child
= 0;
2175 struct window
*parent
= win
->parent
;
2176 reply
->parent
= parent
->handle
;
2177 reply
->owner
= win
->owner
;
2180 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
2181 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
2183 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
2184 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
2186 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2187 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2191 /* set the position and Z order of a window */
2192 DECL_HANDLER(set_window_pos
)
2194 rectangle_t window_rect
, client_rect
, visible_rect
;
2195 struct window
*previous
= NULL
;
2196 struct window
*top
, *win
= get_window( req
->handle
);
2197 unsigned int flags
= req
->swp_flags
;
2200 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2202 if (!(flags
& SWP_NOZORDER
))
2204 switch ((int)req
->previous
)
2206 case 0: /* HWND_TOP */
2207 previous
= WINPTR_TOP
;
2209 case 1: /* HWND_BOTTOM */
2210 previous
= WINPTR_BOTTOM
;
2212 case -1: /* HWND_TOPMOST */
2213 previous
= WINPTR_TOPMOST
;
2215 case -2: /* HWND_NOTOPMOST */
2216 previous
= WINPTR_NOTOPMOST
;
2219 if (!(previous
= get_window( req
->previous
))) return;
2220 /* previous must be a sibling */
2221 if (previous
->parent
!= win
->parent
)
2223 set_error( STATUS_INVALID_PARAMETER
);
2228 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2231 /* windows that use UpdateLayeredWindow don't trigger repaints */
2232 if ((win
->ex_style
& WS_EX_LAYERED
) && !win
->is_layered
) flags
|= SWP_NOREDRAW
;
2234 /* window rectangle must be ordered properly */
2235 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2237 set_error( STATUS_INVALID_PARAMETER
);
2241 window_rect
= visible_rect
= req
->window
;
2242 client_rect
= req
->client
;
2243 if (get_req_data_size() >= sizeof(rectangle_t
))
2244 memcpy( &visible_rect
, get_req_data(), sizeof(rectangle_t
) );
2245 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2247 mirror_rect( &win
->parent
->client_rect
, &window_rect
);
2248 mirror_rect( &win
->parent
->client_rect
, &visible_rect
);
2249 mirror_rect( &win
->parent
->client_rect
, &client_rect
);
2252 win
->paint_flags
= (win
->paint_flags
& ~PAINT_CLIENT_FLAGS
) | (req
->paint_flags
& PAINT_CLIENT_FLAGS
);
2253 if (win
->paint_flags
& PAINT_HAS_PIXEL_FORMAT
) update_pixel_format_flags( win
);
2255 if (get_req_data_size() >= 3 * sizeof(rectangle_t
))
2257 rectangle_t valid_rects
[2];
2258 memcpy( valid_rects
, (const rectangle_t
*)get_req_data() + 1, 2 * sizeof(rectangle_t
) );
2259 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2261 mirror_rect( &win
->parent
->client_rect
, &valid_rects
[0] );
2262 mirror_rect( &win
->parent
->client_rect
, &valid_rects
[1] );
2264 set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, valid_rects
);
2266 else set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, NULL
);
2268 reply
->new_style
= win
->style
;
2269 reply
->new_ex_style
= win
->ex_style
;
2271 top
= get_top_clipping_window( win
);
2272 if (is_visible( top
) &&
2273 (top
->paint_flags
& PAINT_HAS_SURFACE
) &&
2274 (top
->paint_flags
& PAINT_PIXEL_FORMAT_CHILD
))
2275 reply
->surface_win
= top
->handle
;
2279 /* get the window and client rectangles of a window */
2280 DECL_HANDLER(get_window_rectangles
)
2282 struct window
*win
= get_window( req
->handle
);
2286 reply
->window
= win
->window_rect
;
2287 reply
->visible
= win
->visible_rect
;
2288 reply
->client
= win
->client_rect
;
2290 switch (req
->relative
)
2293 offset_rect( &reply
->window
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2294 offset_rect( &reply
->visible
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2295 offset_rect( &reply
->client
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2296 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2298 mirror_rect( &win
->client_rect
, &reply
->window
);
2299 mirror_rect( &win
->client_rect
, &reply
->visible
);
2303 offset_rect( &reply
->window
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2304 offset_rect( &reply
->visible
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2305 offset_rect( &reply
->client
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2306 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2308 mirror_rect( &win
->window_rect
, &reply
->visible
);
2309 mirror_rect( &win
->window_rect
, &reply
->client
);
2313 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2315 mirror_rect( &win
->parent
->client_rect
, &reply
->window
);
2316 mirror_rect( &win
->parent
->client_rect
, &reply
->visible
);
2317 mirror_rect( &win
->parent
->client_rect
, &reply
->client
);
2321 client_to_screen_rect( win
->parent
, &reply
->window
);
2322 client_to_screen_rect( win
->parent
, &reply
->visible
);
2323 client_to_screen_rect( win
->parent
, &reply
->client
);
2326 set_error( STATUS_INVALID_PARAMETER
);
2332 /* get the window text */
2333 DECL_HANDLER(get_window_text
)
2335 struct window
*win
= get_window( req
->handle
);
2337 if (win
&& win
->text
)
2339 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
2340 if (len
> get_reply_max_size()) len
= get_reply_max_size();
2341 set_reply_data( win
->text
, len
);
2346 /* set the window text */
2347 DECL_HANDLER(set_window_text
)
2349 struct window
*win
= get_window( req
->handle
);
2354 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2357 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2358 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2367 /* get the coordinates offset between two windows */
2368 DECL_HANDLER(get_windows_offset
)
2371 int mirror_from
= 0, mirror_to
= 0;
2373 reply
->x
= reply
->y
= 0;
2376 if (!(win
= get_window( req
->from
))) return;
2377 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2380 reply
->x
+= win
->client_rect
.right
- win
->client_rect
.left
;
2382 while (win
&& !is_desktop_window(win
))
2384 reply
->x
+= win
->client_rect
.left
;
2385 reply
->y
+= win
->client_rect
.top
;
2391 if (!(win
= get_window( req
->to
))) return;
2392 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2395 reply
->x
-= win
->client_rect
.right
- win
->client_rect
.left
;
2397 while (win
&& !is_desktop_window(win
))
2399 reply
->x
-= win
->client_rect
.left
;
2400 reply
->y
-= win
->client_rect
.top
;
2404 if (mirror_from
) reply
->x
= -reply
->x
;
2405 reply
->mirror
= mirror_from
^ mirror_to
;
2409 /* get the visible region of a window */
2410 DECL_HANDLER(get_visible_region
)
2412 struct region
*region
;
2413 struct window
*top
, *win
= get_window( req
->window
);
2417 top
= get_top_clipping_window( win
);
2418 if ((region
= get_visible_region( win
, req
->flags
)))
2421 map_win_region_to_screen( win
, region
);
2422 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2423 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2425 reply
->top_win
= top
->handle
;
2426 reply
->top_rect
= top
->visible_rect
;
2428 if (!is_desktop_window(win
))
2430 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2431 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2432 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2436 reply
->win_rect
.left
= 0;
2437 reply
->win_rect
.top
= 0;
2438 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2439 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2444 /* get the surface visible region of a window */
2445 DECL_HANDLER(get_surface_region
)
2447 struct region
*region
;
2448 struct window
*win
= get_window( req
->window
);
2450 if (!win
|| !is_visible( win
)) return;
2452 if ((region
= get_surface_region( win
)))
2455 if (win
->parent
) map_win_region_to_screen( win
->parent
, region
);
2456 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2457 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2459 reply
->visible_rect
= win
->visible_rect
;
2460 if (win
->parent
) client_to_screen_rect( win
->parent
, &reply
->visible_rect
);
2464 /* get the window region */
2465 DECL_HANDLER(get_window_region
)
2468 struct window
*win
= get_window( req
->window
);
2471 if (!win
->win_region
) return;
2473 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2475 struct region
*region
= create_empty_region();
2477 if (!region
) return;
2478 if (!copy_region( region
, win
->win_region
))
2480 free_region( region
);
2483 mirror_region( &win
->window_rect
, region
);
2484 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2486 else data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2488 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2492 /* set the window region */
2493 DECL_HANDLER(set_window_region
)
2495 struct region
*region
= NULL
;
2496 struct window
*win
= get_window( req
->window
);
2500 if (get_req_data_size()) /* no data means remove the region completely */
2502 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2504 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->window_rect
, region
);
2506 set_window_region( win
, region
, req
->redraw
);
2510 /* get a window update region */
2511 DECL_HANDLER(get_update_region
)
2514 unsigned int flags
= req
->flags
;
2515 struct window
*from_child
= NULL
;
2516 struct window
*win
= get_window( req
->window
);
2521 if (req
->from_child
)
2525 if (!(from_child
= get_window( req
->from_child
))) return;
2527 /* make sure from_child is a child of win */
2529 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2532 set_error( STATUS_INVALID_PARAMETER
);
2537 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2539 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2540 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2543 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2544 reply
->child
= win
->handle
;
2546 if (flags
& UPDATE_NOREGION
) return;
2548 if (win
->update_region
)
2550 /* convert update region to screen coordinates */
2551 struct region
*region
= create_empty_region();
2553 if (!region
) return;
2554 if (!copy_region( region
, win
->update_region
))
2556 free_region( region
);
2559 map_win_region_to_screen( win
, region
);
2560 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2561 &reply
->total_size
))) return;
2562 set_reply_data_ptr( data
, reply
->total_size
);
2565 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2567 validate_parents( win
);
2568 validate_whole_window( win
);
2572 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2573 if (reply
->flags
& UPDATE_ERASE
)
2575 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2576 /* desktop window only gets erased, not repainted */
2577 if (is_desktop_window(win
)) validate_whole_window( win
);
2583 /* update the z order of a window so that a given rectangle is fully visible */
2584 DECL_HANDLER(update_window_zorder
)
2586 rectangle_t tmp
, rect
= req
->rect
;
2587 struct window
*ptr
, *win
= get_window( req
->window
);
2589 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2590 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_rect( &win
->client_rect
, &rect
);
2591 offset_rect( &rect
, win
->client_rect
.left
, win
->client_rect
.top
);
2593 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2595 if (ptr
== win
) break;
2596 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2597 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2598 if (ptr
->is_layered
&& (ptr
->layered_flags
& LWA_COLORKEY
)) continue;
2599 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &rect
)) continue;
2600 if (ptr
->win_region
)
2603 offset_rect( &tmp
, -ptr
->window_rect
.left
, -ptr
->window_rect
.top
);
2604 if (!rect_in_region( ptr
->win_region
, &tmp
)) continue;
2606 /* found a window obscuring the rectangle, now move win above this one */
2607 /* making sure to not violate the topmost rule */
2608 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2610 list_remove( &win
->entry
);
2611 list_add_before( &ptr
->entry
, &win
->entry
);
2618 /* mark parts of a window as needing a redraw */
2619 DECL_HANDLER(redraw_window
)
2621 struct region
*region
= NULL
;
2622 struct window
*win
= get_window( req
->window
);
2625 if (!is_visible( win
)) return; /* nothing to do */
2627 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2629 if (get_req_data_size()) /* no data means whole rectangle */
2631 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2633 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->client_rect
, region
);
2637 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2639 if (region
) free_region( region
);
2643 /* set a window property */
2644 DECL_HANDLER(set_window_property
)
2646 struct unicode_str name
;
2647 struct window
*win
= get_window( req
->window
);
2651 get_req_unicode_str( &name
);
2654 atom_t atom
= add_global_atom( NULL
, &name
);
2657 set_property( win
, atom
, req
->data
, PROP_TYPE_STRING
);
2658 release_global_atom( NULL
, atom
);
2661 else set_property( win
, req
->atom
, req
->data
, PROP_TYPE_ATOM
);
2665 /* remove a window property */
2666 DECL_HANDLER(remove_window_property
)
2668 struct unicode_str name
;
2669 struct window
*win
= get_window( req
->window
);
2671 get_req_unicode_str( &name
);
2674 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2675 if (atom
) reply
->data
= remove_property( win
, atom
);
2680 /* get a window property */
2681 DECL_HANDLER(get_window_property
)
2683 struct unicode_str name
;
2684 struct window
*win
= get_window( req
->window
);
2686 get_req_unicode_str( &name
);
2689 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2690 if (atom
) reply
->data
= get_property( win
, atom
);
2695 /* get the list of properties of a window */
2696 DECL_HANDLER(get_window_properties
)
2698 property_data_t
*data
;
2699 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2700 struct window
*win
= get_window( req
->window
);
2705 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2706 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2707 reply
->total
= count
;
2709 if (count
> max
) count
= max
;
2710 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2712 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2714 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2715 data
->atom
= win
->properties
[i
].atom
;
2716 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2717 data
->data
= win
->properties
[i
].data
;
2724 /* get the new window pointer for a global window, checking permissions */
2725 /* helper for set_global_windows request */
2726 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2735 set_error( STATUS_ACCESS_DENIED
);
2738 *win
= get_window( handle
);
2739 return (*win
!= NULL
);
2742 /* Set/get the global windows */
2743 DECL_HANDLER(set_global_windows
)
2745 struct window
*new_shell_window
= shell_window
;
2746 struct window
*new_shell_listview
= shell_listview
;
2747 struct window
*new_progman_window
= progman_window
;
2748 struct window
*new_taskman_window
= taskman_window
;
2750 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2751 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2752 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2753 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2755 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2757 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2758 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2760 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2762 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2764 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2766 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2768 shell_window
= new_shell_window
;
2769 shell_listview
= new_shell_listview
;
2770 progman_window
= new_progman_window
;
2771 taskman_window
= new_taskman_window
;
2774 /* retrieve layered info for a window */
2775 DECL_HANDLER(get_window_layered_info
)
2777 struct window
*win
= get_window( req
->handle
);
2781 if (win
->is_layered
)
2783 reply
->color_key
= win
->color_key
;
2784 reply
->alpha
= win
->alpha
;
2785 reply
->flags
= win
->layered_flags
;
2787 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
2791 /* set layered info for a window */
2792 DECL_HANDLER(set_window_layered_info
)
2794 struct window
*win
= get_window( req
->handle
);
2798 if (win
->ex_style
& WS_EX_LAYERED
)
2800 if (req
->flags
& LWA_ALPHA
) win
->alpha
= req
->alpha
;
2801 else if (!win
->is_layered
) win
->alpha
= 0; /* alpha init value is 0 */
2803 win
->color_key
= req
->color_key
;
2804 win
->layered_flags
= req
->flags
;
2805 win
->is_layered
= 1;
2807 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);