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 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
97 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
98 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
99 #define PAINT_DELAYED_ERASE 0x08 /* still needs erase after WM_ERASEBKGND */
101 /* growable array of user handles */
102 struct user_handle_array
104 user_handle_t
*handles
;
109 /* global window pointers */
110 static struct window
*shell_window
;
111 static struct window
*shell_listview
;
112 static struct window
*progman_window
;
113 static struct window
*taskman_window
;
115 /* magic HWND_TOP etc. pointers */
116 #define WINPTR_TOP ((struct window *)1L)
117 #define WINPTR_BOTTOM ((struct window *)2L)
118 #define WINPTR_TOPMOST ((struct window *)3L)
119 #define WINPTR_NOTOPMOST ((struct window *)4L)
121 /* retrieve a pointer to a window from its handle */
122 static inline struct window
*get_window( user_handle_t handle
)
124 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
125 if (!ret
) set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
129 /* check if window is the desktop */
130 static inline int is_desktop_window( const struct window
*win
)
132 return !win
->parent
; /* only desktop windows have no parent */
135 /* get next window in Z-order list */
136 static inline struct window
*get_next_window( struct window
*win
)
138 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
139 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
142 /* get previous window in Z-order list */
143 static inline struct window
*get_prev_window( struct window
*win
)
145 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
146 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
149 /* get first child in Z-order list */
150 static inline struct window
*get_first_child( struct window
*win
)
152 struct list
*ptr
= list_head( &win
->children
);
153 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
156 /* get last child in Z-order list */
157 static inline struct window
*get_last_child( struct window
*win
)
159 struct list
*ptr
= list_tail( &win
->children
);
160 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
163 /* link a window at the right place in the siblings list */
164 static void link_window( struct window
*win
, struct window
*previous
)
166 if (previous
== WINPTR_NOTOPMOST
)
168 if (!(win
->ex_style
& WS_EX_TOPMOST
) && win
->is_linked
) return; /* nothing to do */
169 win
->ex_style
&= ~WS_EX_TOPMOST
;
170 previous
= WINPTR_TOP
; /* fallback to the HWND_TOP case */
173 list_remove( &win
->entry
); /* unlink it from the previous location */
175 if (previous
== WINPTR_BOTTOM
)
177 list_add_tail( &win
->parent
->children
, &win
->entry
);
178 win
->ex_style
&= ~WS_EX_TOPMOST
;
180 else if (previous
== WINPTR_TOPMOST
)
182 list_add_head( &win
->parent
->children
, &win
->entry
);
183 win
->ex_style
|= WS_EX_TOPMOST
;
185 else if (previous
== WINPTR_TOP
)
187 struct list
*entry
= win
->parent
->children
.next
;
188 if (!(win
->ex_style
& WS_EX_TOPMOST
)) /* put it above the first non-topmost window */
190 while (entry
!= &win
->parent
->children
)
192 struct window
*next
= LIST_ENTRY( entry
, struct window
, entry
);
193 if (!(next
->ex_style
& WS_EX_TOPMOST
)) break;
194 if (next
->handle
== win
->owner
) /* keep it above owner */
196 win
->ex_style
|= WS_EX_TOPMOST
;
202 list_add_before( entry
, &win
->entry
);
206 list_add_after( &previous
->entry
, &win
->entry
);
207 if (!(previous
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
&= ~WS_EX_TOPMOST
;
210 struct window
*next
= get_next_window( win
);
211 if (next
&& (next
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
|= WS_EX_TOPMOST
;
218 /* change the parent of a window (or unlink the window if the new parent is NULL) */
219 static int set_parent_window( struct window
*win
, struct window
*parent
)
223 /* make sure parent is not a child of window */
224 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
228 set_error( STATUS_INVALID_PARAMETER
);
235 win
->parent
= parent
;
236 link_window( win
, WINPTR_TOP
);
238 /* if parent belongs to a different thread and the window isn't */
239 /* top-level, attach the two threads */
240 if (parent
->thread
&& parent
->thread
!= win
->thread
&& !is_desktop_window(parent
))
241 attach_thread_input( win
->thread
, parent
->thread
);
243 else /* move it to parent unlinked list */
245 list_remove( &win
->entry
); /* unlink it from the previous location */
246 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
252 /* append a user handle to a handle array */
253 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
255 if (array
->count
>= array
->total
)
257 int new_total
= max( array
->total
* 2, 32 );
258 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
261 free( array
->handles
);
262 set_error( STATUS_NO_MEMORY
);
265 array
->handles
= new_array
;
266 array
->total
= new_total
;
268 array
->handles
[array
->count
++] = handle
;
272 /* set a window property */
273 static void set_property( struct window
*win
, atom_t atom
, lparam_t data
, enum property_type type
)
276 struct property
*new_props
;
278 /* check if it exists already */
279 for (i
= 0; i
< win
->prop_inuse
; i
++)
281 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
286 if (win
->properties
[i
].atom
== atom
)
288 win
->properties
[i
].type
= type
;
289 win
->properties
[i
].data
= data
;
294 /* need to add an entry */
295 if (!grab_global_atom( NULL
, atom
)) return;
299 if (win
->prop_inuse
>= win
->prop_alloc
)
301 /* need to grow the array */
302 if (!(new_props
= realloc( win
->properties
,
303 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
305 set_error( STATUS_NO_MEMORY
);
306 release_global_atom( NULL
, atom
);
309 win
->prop_alloc
+= 16;
310 win
->properties
= new_props
;
312 free
= win
->prop_inuse
++;
314 win
->properties
[free
].atom
= atom
;
315 win
->properties
[free
].type
= type
;
316 win
->properties
[free
].data
= data
;
319 /* remove a window property */
320 static lparam_t
remove_property( struct window
*win
, atom_t atom
)
324 for (i
= 0; i
< win
->prop_inuse
; i
++)
326 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
327 if (win
->properties
[i
].atom
== atom
)
329 release_global_atom( NULL
, atom
);
330 win
->properties
[i
].type
= PROP_TYPE_FREE
;
331 return win
->properties
[i
].data
;
334 /* FIXME: last error? */
338 /* find a window property */
339 static lparam_t
get_property( struct window
*win
, atom_t atom
)
343 for (i
= 0; i
< win
->prop_inuse
; i
++)
345 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
346 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].data
;
348 /* FIXME: last error? */
352 /* destroy all properties of a window */
353 static inline void destroy_properties( struct window
*win
)
357 if (!win
->properties
) return;
358 for (i
= 0; i
< win
->prop_inuse
; i
++)
360 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
361 release_global_atom( NULL
, win
->properties
[i
].atom
);
363 free( win
->properties
);
366 /* detach a window from its owner thread but keep the window around */
367 static void detach_window_thread( struct window
*win
)
369 struct thread
*thread
= win
->thread
;
374 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
375 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
376 queue_cleanup_window( thread
, win
->handle
);
378 assert( thread
->desktop_users
> 0 );
379 thread
->desktop_users
--;
380 release_class( win
->class );
383 /* don't hold a reference to the desktop so that the desktop window can be */
384 /* destroyed when the desktop ref count reaches zero */
385 release_object( win
->desktop
);
389 /* get the process owning the top window of a given desktop */
390 struct process
*get_top_window_owner( struct desktop
*desktop
)
392 struct window
*win
= desktop
->top_window
;
393 if (!win
|| !win
->thread
) return NULL
;
394 return win
->thread
->process
;
397 /* get the top window size of a given desktop */
398 void get_top_window_rectangle( struct desktop
*desktop
, rectangle_t
*rect
)
400 struct window
*win
= desktop
->top_window
;
401 if (!win
) rect
->left
= rect
->top
= rect
->right
= rect
->bottom
= 0;
402 else *rect
= win
->window_rect
;
405 /* post a message to the desktop window */
406 void post_desktop_message( struct desktop
*desktop
, unsigned int message
,
407 lparam_t wparam
, lparam_t lparam
)
409 struct window
*win
= desktop
->top_window
;
410 if (win
&& win
->thread
) post_message( win
->handle
, message
, wparam
, lparam
);
413 /* create a new window structure (note: the window is not linked in the window tree) */
414 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
415 atom_t atom
, mod_handle_t instance
)
417 static const rectangle_t empty_rect
;
419 struct window
*win
= NULL
;
420 struct desktop
*desktop
;
421 struct window_class
*class;
423 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
425 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
427 release_object( desktop
);
431 if (!parent
) /* null parent is only allowed for desktop or HWND_MESSAGE top window */
433 if (is_desktop_class( class ))
434 parent
= desktop
->top_window
; /* use existing desktop if any */
435 else if (is_hwnd_message_class( class ))
436 /* use desktop window if message window is already created */
437 parent
= desktop
->msg_window
? desktop
->top_window
: NULL
;
438 else if (!(parent
= desktop
->top_window
)) /* must already have a desktop then */
440 set_error( STATUS_ACCESS_DENIED
);
445 /* parent must be on the same desktop */
446 if (parent
&& parent
->desktop
!= desktop
)
448 set_error( STATUS_ACCESS_DENIED
);
452 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
453 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
455 win
->parent
= parent
;
456 win
->owner
= owner
? owner
->handle
: 0;
457 win
->thread
= current
;
458 win
->desktop
= desktop
;
461 win
->last_active
= win
->handle
;
462 win
->win_region
= NULL
;
463 win
->update_region
= NULL
;
473 win
->paint_flags
= 0;
476 win
->properties
= NULL
;
477 win
->nb_extra_bytes
= extra_bytes
;
478 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
479 memset( win
->extra_bytes
, 0, extra_bytes
);
480 list_init( &win
->children
);
481 list_init( &win
->unlinked
);
483 /* if parent belongs to a different thread and the window isn't */
484 /* top-level, attach the two threads */
485 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
487 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
489 else /* otherwise just make sure that the thread has a message queue */
491 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
494 /* put it on parent unlinked list */
495 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
498 list_init( &win
->entry
);
499 if (is_desktop_class( class ))
501 assert( !desktop
->top_window
);
502 desktop
->top_window
= win
;
503 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
507 assert( !desktop
->msg_window
);
508 desktop
->msg_window
= win
;
512 current
->desktop_users
++;
518 if (win
->handle
) free_user_handle( win
->handle
);
521 release_object( desktop
);
522 release_class( class );
526 /* destroy all windows belonging to a given thread */
527 void destroy_thread_windows( struct thread
*thread
)
529 user_handle_t handle
= 0;
532 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
534 if (win
->thread
!= thread
) continue;
535 if (is_desktop_window( win
)) detach_window_thread( win
);
536 else destroy_window( win
);
540 /* get the desktop window */
541 static struct window
*get_desktop_window( struct thread
*thread
)
543 struct window
*top_window
;
544 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
546 if (!desktop
) return NULL
;
547 top_window
= desktop
->top_window
;
548 release_object( desktop
);
552 /* check whether child is a descendant of parent */
553 int is_child_window( user_handle_t parent
, user_handle_t child
)
555 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
556 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
558 if (!child_ptr
|| !parent_ptr
) return 0;
559 while (child_ptr
->parent
)
561 if (child_ptr
->parent
== parent_ptr
) return 1;
562 child_ptr
= child_ptr
->parent
;
567 /* check whether window is a top-level window */
568 int is_top_level_window( user_handle_t window
)
570 struct window
*win
= get_user_object( window
, USER_WINDOW
);
571 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
574 /* make a window active if possible */
575 int make_window_active( user_handle_t window
)
577 struct window
*owner
, *win
= get_window( window
);
581 /* set last active for window and its owners */
585 owner
->last_active
= win
->handle
;
586 owner
= get_user_object( owner
->owner
, USER_WINDOW
);
591 /* increment (or decrement) the window paint count */
592 static inline void inc_window_paint_count( struct window
*win
, int incr
)
594 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
597 /* check if window and all its ancestors are visible */
598 static int is_visible( const struct window
*win
)
602 if (!(win
->style
& WS_VISIBLE
)) return 0;
604 /* if parent is minimized children are not visible */
605 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
610 /* same as is_visible but takes a window handle */
611 int is_window_visible( user_handle_t window
)
613 struct window
*win
= get_user_object( window
, USER_WINDOW
);
615 return is_visible( win
);
618 int is_window_transparent( user_handle_t window
)
620 struct window
*win
= get_user_object( window
, USER_WINDOW
);
622 return (win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
);
625 /* check if point is inside the window */
626 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
628 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
629 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
630 return 0; /* disabled child */
631 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
632 return 0; /* transparent */
633 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
634 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
635 return 0; /* not in window */
636 if (win
->win_region
&&
637 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
638 return 0; /* not in window region */
642 /* fill an array with the handles of the children of a specified window */
643 static unsigned int get_children_windows( struct window
*parent
, atom_t atom
, thread_id_t tid
,
644 user_handle_t
*handles
, unsigned int max_count
)
647 unsigned int count
= 0;
649 if (!parent
) return 0;
651 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
653 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
654 if (tid
&& get_thread_id(ptr
->thread
) != tid
) continue;
657 if (count
>= max_count
) break;
658 handles
[count
] = ptr
->handle
;
665 /* find child of 'parent' that contains the given point (in parent-relative coords) */
666 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
670 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
672 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
674 /* if window is minimized or disabled, return at once */
675 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
677 /* if point is not in client area, return at once */
678 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
679 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
682 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
684 return parent
; /* not found any child */
687 /* find all children of 'parent' that contain the given point */
688 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
689 struct user_handle_array
*array
)
693 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
695 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
697 /* if point is in client area, and window is not minimized or disabled, check children */
698 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
699 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
700 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
702 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
703 y
- ptr
->client_rect
.top
, array
))
707 /* now add window to the array */
708 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
713 /* find window containing point (in absolute coords) */
714 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
718 if (!desktop
->top_window
) return 0;
719 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
723 /* return list of all windows containing point (in absolute coords) */
724 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
728 /* make point relative to top window */
729 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
731 x
-= ptr
->client_rect
.left
;
732 y
-= ptr
->client_rect
.top
;
735 if (!is_point_in_window( top
, x
, y
)) return 1;
737 /* if point is in client area, and window is not minimized or disabled, check children */
738 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
739 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
740 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
742 if (!is_desktop_window(top
))
744 x
-= top
->client_rect
.left
;
745 y
-= top
->client_rect
.top
;
747 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
749 /* now add window to the array */
750 if (!add_handle_to_array( array
, top
->handle
)) return 0;
755 /* return the thread owning a window */
756 struct thread
*get_window_thread( user_handle_t handle
)
758 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
759 if (!win
|| !win
->thread
) return NULL
;
760 return (struct thread
*)grab_object( win
->thread
);
764 /* check if any area of a window needs repainting */
765 static inline int win_needs_repaint( struct window
*win
)
767 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
771 /* find a child of the specified window that needs repainting */
772 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
774 struct window
*ptr
, *ret
= NULL
;
776 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
778 if (!(ptr
->style
& WS_VISIBLE
)) continue;
779 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
781 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
782 ret
= find_child_to_repaint( ptr
, thread
);
786 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
788 /* transparent window, check for non-transparent sibling to paint first */
789 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
791 if (!(ptr
->style
& WS_VISIBLE
)) continue;
792 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
793 if (ptr
->thread
!= thread
) continue;
794 if (win_needs_repaint( ptr
)) return ptr
;
801 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
802 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
804 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
);
806 if (!top_window
) return 0;
808 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
809 else win
= find_child_to_repaint( top_window
, thread
);
813 /* check that it is a child of the specified parent */
814 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
815 if (ptr
->handle
== parent
) break;
816 /* otherwise don't return any window, we don't repaint a child before its parent */
817 if (!ptr
) win
= NULL
;
820 win
->paint_flags
&= ~PAINT_INTERNAL
;
825 /* intersect the window region with the specified region, relative to the window parent */
826 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
828 /* make region relative to window rect */
829 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
830 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
831 /* make region relative to parent again */
832 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
837 /* convert coordinates from client to screen coords */
838 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
840 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
842 *x
+= win
->client_rect
.left
;
843 *y
+= win
->client_rect
.top
;
847 /* convert coordinates from client to screen coords */
848 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
850 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
852 rect
->left
+= win
->client_rect
.left
;
853 rect
->right
+= win
->client_rect
.left
;
854 rect
->top
+= win
->client_rect
.top
;
855 rect
->bottom
+= win
->client_rect
.top
;
859 /* map the region from window to screen coordinates */
860 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
862 if (!is_desktop_window(win
))
864 int x
= win
->window_rect
.left
;
865 int y
= win
->window_rect
.top
;
866 client_to_screen( win
->parent
, &x
, &y
);
867 offset_region( region
, x
, y
);
872 /* clip all children of a given window out of the visible region */
873 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
874 struct region
*region
, int offset_x
, int offset_y
)
877 struct region
*tmp
= create_empty_region();
879 if (!tmp
) return NULL
;
880 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
882 if (ptr
== last
) break;
883 if (!(ptr
->style
& WS_VISIBLE
)) continue;
884 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
885 set_region_rect( tmp
, &ptr
->visible_rect
);
886 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
891 offset_region( tmp
, offset_x
, offset_y
);
892 if (!(region
= subtract_region( region
, region
, tmp
))) break;
893 if (is_region_empty( region
)) break;
900 /* offset the coordinates of a rectangle */
901 static inline void offset_rect( rectangle_t
*rect
, int offset_x
, int offset_y
)
903 rect
->left
+= offset_x
;
904 rect
->top
+= offset_y
;
905 rect
->right
+= offset_x
;
906 rect
->bottom
+= offset_y
;
910 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
911 static void set_region_client_rect( struct region
*region
, struct window
*win
)
915 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
916 set_region_rect( region
, &rect
);
920 /* get the top-level window to clip against for a given window */
921 static inline struct window
*get_top_clipping_window( struct window
*win
)
923 while (win
->parent
&& !is_desktop_window(win
->parent
)) win
= win
->parent
;
928 /* compute the visible region of a window, in window coordinates */
929 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
931 struct region
*tmp
= NULL
, *region
;
932 int offset_x
, offset_y
;
934 if (!(region
= create_empty_region())) return NULL
;
936 /* first check if all ancestors are visible */
938 if (!is_visible( win
)) return region
; /* empty region */
940 /* create a region relative to the window itself */
942 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
944 set_region_client_rect( region
, win
->parent
);
945 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
947 else if (flags
& DCX_WINDOW
)
949 set_region_rect( region
, &win
->visible_rect
);
950 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
954 set_region_client_rect( region
, win
);
955 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
960 if (flags
& DCX_CLIPCHILDREN
)
962 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
965 offset_x
= win
->client_rect
.left
;
966 offset_y
= win
->client_rect
.top
;
968 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
971 /* clip siblings of ancestors */
973 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
976 offset_x
= win
->window_rect
.left
;
977 offset_y
= win
->window_rect
.top
;
980 if ((tmp
= create_empty_region()) != NULL
)
984 /* we don't clip out top-level siblings as that's up to the native windowing system */
985 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
987 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
988 if (is_region_empty( region
)) break;
990 /* clip to parent client area */
992 if (!is_desktop_window(win
))
994 offset_x
+= win
->client_rect
.left
;
995 offset_y
+= win
->client_rect
.top
;
996 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
998 set_region_client_rect( tmp
, win
);
999 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
1000 if (!intersect_region( region
, region
, tmp
)) goto error
;
1001 if (is_region_empty( region
)) break;
1005 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
1009 if (tmp
) free_region( tmp
);
1010 free_region( region
);
1015 /* get the window class of a window */
1016 struct window_class
* get_window_class( user_handle_t window
)
1019 if (!(win
= get_window( window
))) return NULL
;
1020 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1024 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1025 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1026 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1028 int offset_x
= 0, offset_y
= 0;
1030 if (!(win
->style
& WS_VISIBLE
)) return 0;
1032 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1033 if (!is_desktop_window(win
))
1035 offset_x
= win
->window_rect
.left
;
1036 offset_y
= win
->window_rect
.top
;
1042 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1043 if (!is_desktop_window(win
))
1045 offset_x
+= win
->client_rect
.left
;
1046 offset_y
+= win
->client_rect
.top
;
1047 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1049 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1050 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1052 offset_rect( rect
, -offset_x
, -offset_y
);
1056 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1057 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1058 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1063 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1064 if (!(tmp
= create_empty_region())) return NULL
;
1065 set_region_rect( tmp
, &rect
);
1069 /* map it to client coords */
1070 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1071 win
->window_rect
.top
- win
->client_rect
.top
);
1073 /* intersect specified region with bounding rect */
1074 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1075 if (is_region_empty( tmp
)) goto done
;
1077 /* map it back to window coords */
1078 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1079 win
->client_rect
.top
- win
->window_rect
.top
);
1089 /* set a region as new update region for the window */
1090 static void set_update_region( struct window
*win
, struct region
*region
)
1092 if (region
&& !is_region_empty( region
))
1094 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1095 else free_region( win
->update_region
);
1096 win
->update_region
= region
;
1100 if (win
->update_region
)
1102 inc_window_paint_count( win
, -1 );
1103 free_region( win
->update_region
);
1105 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1106 win
->update_region
= NULL
;
1107 if (region
) free_region( region
);
1112 /* add a region to the update region; the passed region is freed or reused */
1113 static int add_update_region( struct window
*win
, struct region
*region
)
1115 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1117 free_region( region
);
1120 set_update_region( win
, region
);
1125 /* crop the update region of children to the specified rectangle, in client coords */
1126 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1128 struct window
*child
;
1130 rectangle_t child_rect
;
1132 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1134 if (!(child
->style
& WS_VISIBLE
)) continue;
1135 if (!rect
) /* crop everything out */
1137 crop_children_update_region( child
, NULL
);
1138 set_update_region( child
, NULL
);
1142 /* nothing to do if child is completely inside rect */
1143 if (child
->window_rect
.left
>= rect
->left
&&
1144 child
->window_rect
.top
>= rect
->top
&&
1145 child
->window_rect
.right
<= rect
->right
&&
1146 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1148 /* map to child client coords and crop grand-children */
1150 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1151 crop_children_update_region( child
, &child_rect
);
1153 /* now crop the child itself */
1154 if (!child
->update_region
) continue;
1155 if (!(tmp
= create_empty_region())) continue;
1156 set_region_rect( tmp
, rect
);
1157 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1158 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1159 else free_region( tmp
);
1164 /* validate the non client area of a window */
1165 static void validate_non_client( struct window
*win
)
1170 if (!win
->update_region
) return; /* nothing to do */
1172 /* get client rect in window coords */
1173 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1174 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1175 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1176 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1178 if ((tmp
= create_empty_region()))
1180 set_region_rect( tmp
, &rect
);
1181 if (intersect_region( tmp
, win
->update_region
, tmp
))
1182 set_update_region( win
, tmp
);
1186 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1190 /* validate a window completely so that we don't get any further paint messages for it */
1191 static void validate_whole_window( struct window
*win
)
1193 set_update_region( win
, NULL
);
1195 if (win
->paint_flags
& PAINT_INTERNAL
)
1197 win
->paint_flags
&= ~PAINT_INTERNAL
;
1198 inc_window_paint_count( win
, -1 );
1203 /* validate a window's children so that we don't get any further paint messages for it */
1204 static void validate_children( struct window
*win
)
1206 struct window
*child
;
1208 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1210 if (!(child
->style
& WS_VISIBLE
)) continue;
1211 validate_children(child
);
1212 validate_whole_window(child
);
1217 /* validate the update region of a window on all parents; helper for get_update_region */
1218 static void validate_parents( struct window
*child
)
1220 int offset_x
= 0, offset_y
= 0;
1221 struct window
*win
= child
;
1222 struct region
*tmp
= NULL
;
1224 if (!child
->update_region
) return;
1228 /* map to parent client coords */
1229 offset_x
+= win
->window_rect
.left
;
1230 offset_y
+= win
->window_rect
.top
;
1234 /* and now map to window coords */
1235 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1236 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1238 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1240 if (!tmp
&& !(tmp
= create_empty_region())) return;
1241 offset_region( child
->update_region
, offset_x
, offset_y
);
1242 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1244 set_update_region( win
, tmp
);
1247 /* restore child coords */
1248 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1251 if (tmp
) free_region( tmp
);
1255 /* add/subtract a region (in client coordinates) to the update region of the window */
1256 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1259 struct window
*child
;
1261 if (flags
& RDW_INVALIDATE
)
1263 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1265 if (!add_update_region( win
, tmp
)) return;
1267 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1268 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1270 else if (flags
& RDW_VALIDATE
)
1272 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1274 set_update_region( win
, NULL
);
1276 else if (win
->update_region
)
1278 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1280 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1285 set_update_region( win
, tmp
);
1287 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1288 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1292 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1294 win
->paint_flags
|= PAINT_INTERNAL
;
1295 inc_window_paint_count( win
, 1 );
1297 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1299 win
->paint_flags
&= ~PAINT_INTERNAL
;
1300 inc_window_paint_count( win
, -1 );
1303 /* now process children recursively */
1305 if (flags
& RDW_NOCHILDREN
) return;
1306 if (win
->style
& WS_MINIMIZE
) return;
1307 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1309 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1311 /* map to client coordinates */
1312 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1313 win
->window_rect
.top
- win
->client_rect
.top
);
1315 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1317 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1319 if (!(child
->style
& WS_VISIBLE
)) continue;
1320 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1321 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1322 redraw_window( child
, tmp
, 1, flags
);
1323 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1329 /* retrieve the update flags for a window depending on the state of the update region */
1330 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1332 unsigned int ret
= 0;
1334 if (flags
& UPDATE_NONCLIENT
)
1336 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1338 if (flags
& UPDATE_ERASE
)
1340 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1342 if (flags
& UPDATE_PAINT
)
1344 if (win
->update_region
)
1346 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1347 ret
|= UPDATE_PAINT
;
1350 if (flags
& UPDATE_INTERNALPAINT
)
1352 if (win
->paint_flags
& PAINT_INTERNAL
)
1354 ret
|= UPDATE_INTERNALPAINT
;
1355 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1362 /* iterate through the children of the given window until we find one with some update flags */
1363 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1364 unsigned int flags
, struct window
**child
)
1367 unsigned int ret
= 0;
1369 /* first make sure we want to iterate children at all */
1371 if (win
->style
& WS_MINIMIZE
) return 0;
1373 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1374 * here we only want to repaint children of windows that clip them, others
1375 * need to wait for WM_PAINT to be done in the parent first.
1377 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1379 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1381 if (from_child
) /* skip all children until from_child is found */
1383 if (ptr
== from_child
) from_child
= NULL
;
1386 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1387 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1392 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1397 /* iterate through children and siblings of the given window until we find one with some update flags */
1398 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1399 unsigned int flags
, struct window
**child
)
1402 struct window
*ptr
, *from_sibling
= NULL
;
1404 /* if some parent is not visible start from the next sibling */
1406 if (!is_visible( win
)) return 0;
1407 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1409 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1410 if (ptr
== win
) break;
1413 /* non-client painting must be delayed if one of the parents is going to
1414 * be repainted and doesn't clip children */
1416 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1418 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1420 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1423 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1425 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1427 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1428 if (ptr
== win
) break;
1434 /* check window itself (only if not restarting from a child) */
1438 if ((ret
= get_update_flags( win
, flags
)))
1446 /* now check children */
1448 if (flags
& UPDATE_NOCHILDREN
) return 0;
1451 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1452 from_sibling
= from_child
;
1455 /* then check siblings and parent siblings */
1457 while (from_sibling
->parent
&& from_sibling
!= win
)
1459 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1461 from_sibling
= from_sibling
->parent
;
1467 /* expose the areas revealed by a vis region change on the window parent */
1468 /* returns the region exposed on the window itself (in client coordinates) */
1469 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1470 struct region
*old_vis_rgn
)
1472 struct region
*new_vis_rgn
, *exposed_rgn
;
1474 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1476 if ((exposed_rgn
= create_empty_region()))
1478 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1480 /* make it relative to the new client area */
1481 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1482 win
->window_rect
.top
- win
->client_rect
.top
);
1486 free_region( exposed_rgn
);
1493 /* make it relative to the old window pos for subtracting */
1494 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1495 win
->window_rect
.top
- old_window_rect
->top
);
1497 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1498 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1499 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1501 if (!is_region_empty( new_vis_rgn
))
1503 /* make it relative to parent */
1504 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1505 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1509 free_region( new_vis_rgn
);
1514 /* set the window and client rectangles, updating the update region if necessary */
1515 static void set_window_pos( struct window
*win
, struct window
*previous
,
1516 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1517 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1518 const rectangle_t
*valid_rects
)
1520 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1521 const rectangle_t old_window_rect
= win
->window_rect
;
1522 const rectangle_t old_visible_rect
= win
->visible_rect
;
1523 const rectangle_t old_client_rect
= win
->client_rect
;
1525 int client_changed
, frame_changed
;
1526 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1528 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1530 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1532 /* set the new window info before invalidating anything */
1534 win
->window_rect
= *window_rect
;
1535 win
->visible_rect
= *visible_rect
;
1536 win
->client_rect
= *client_rect
;
1537 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1538 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1539 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1541 /* keep children at the same position relative to top right corner when the parent is mirrored */
1542 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
1544 struct window
*child
;
1545 int old_size
= old_client_rect
.right
- old_client_rect
.left
;
1546 int new_size
= win
->client_rect
.right
- win
->client_rect
.left
;
1548 if (old_size
!= new_size
) LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1550 offset_rect( &child
->window_rect
, new_size
- old_size
, 0 );
1551 offset_rect( &child
->visible_rect
, new_size
- old_size
, 0 );
1552 offset_rect( &child
->client_rect
, new_size
- old_size
, 0 );
1556 /* reset cursor clip rectangle when the desktop changes size */
1557 if (win
== win
->desktop
->top_window
) win
->desktop
->cursor
.clip
= *window_rect
;
1559 /* if the window is not visible, everything is easy */
1560 if (!visible
) return;
1562 /* expose anything revealed by the change */
1564 if (!(swp_flags
& SWP_NOREDRAW
))
1565 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1567 if (!(win
->style
& WS_VISIBLE
))
1569 /* clear the update region since the window is no longer visible */
1570 validate_whole_window( win
);
1571 validate_children( win
);
1575 /* crop update region to the new window rect */
1577 if (win
->update_region
)
1579 if (get_window_visible_rect( win
, &rect
, 1 ))
1581 struct region
*tmp
= create_empty_region();
1584 set_region_rect( tmp
, &rect
);
1585 if (intersect_region( tmp
, win
->update_region
, tmp
))
1586 set_update_region( win
, tmp
);
1591 else set_update_region( win
, NULL
); /* visible rect is empty */
1594 /* crop children regions to the new window rect */
1596 if (get_window_visible_rect( win
, &rect
, 0 ))
1598 /* map to client coords */
1599 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1600 win
->window_rect
.top
- win
->client_rect
.top
);
1601 crop_children_update_region( win
, &rect
);
1603 else crop_children_update_region( win
, NULL
);
1605 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1607 /* expose the whole non-client area if it changed in any way */
1609 if (swp_flags
& SWP_NOCOPYBITS
)
1611 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1612 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1613 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1614 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1618 /* assume the bits have been moved to follow the window rect */
1619 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1620 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1621 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1622 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1623 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1624 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1625 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1626 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1627 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1628 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1629 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1630 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1631 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1633 memcmp( &valid_rects
[0], client_rect
, sizeof(*client_rect
) ));
1634 /* if part of the non-client area was exposed, consider it changed */
1635 if (exposed_rgn
&& !frame_changed
)
1637 get_region_extents( exposed_rgn
, &rect
);
1638 offset_rect( &rect
, client_rect
->left
, client_rect
->top
);
1639 frame_changed
= (rect
.left
< client_rect
->left
|| rect
.top
< client_rect
->top
||
1640 rect
.right
> client_rect
->right
|| rect
.bottom
> client_rect
->bottom
);
1644 if (frame_changed
|| client_changed
)
1646 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1648 set_region_rect( win_rgn
, window_rect
);
1651 /* subtract the valid portion of client rect from the total region */
1652 struct region
*tmp
= create_empty_region();
1655 set_region_rect( tmp
, &valid_rects
[0] );
1656 /* subtract update region since invalid parts of the valid rect won't be copied */
1657 if (win
->update_region
)
1659 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1660 subtract_region( tmp
, tmp
, win
->update_region
);
1661 offset_region( tmp
, window_rect
->left
, window_rect
->top
);
1663 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1664 else free_region( tmp
);
1667 if (!is_desktop_window(win
))
1668 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1671 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1672 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1676 exposed_rgn
= win_rgn
;
1677 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1682 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1685 if (old_vis_rgn
) free_region( old_vis_rgn
);
1686 if (exposed_rgn
) free_region( exposed_rgn
);
1687 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1691 /* set the window region, updating the update region if necessary */
1692 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1694 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1696 /* no need to redraw if window is not visible */
1697 if (redraw
&& !is_visible( win
)) redraw
= 0;
1699 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1701 if (win
->win_region
) free_region( win
->win_region
);
1702 win
->win_region
= region
;
1704 /* expose anything revealed by the change */
1705 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1707 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1708 free_region( exposed_rgn
);
1711 if (old_vis_rgn
) free_region( old_vis_rgn
);
1712 clear_error(); /* we ignore out of memory errors since the region has been set */
1716 /* destroy a window */
1717 void destroy_window( struct window
*win
)
1719 /* hide the window */
1720 if (is_visible(win
))
1722 struct region
*vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1723 win
->style
&= ~WS_VISIBLE
;
1726 struct region
*exposed_rgn
= expose_window( win
, &win
->window_rect
, vis_rgn
);
1727 if (exposed_rgn
) free_region( exposed_rgn
);
1728 free_region( vis_rgn
);
1730 validate_whole_window( win
);
1731 validate_children( win
);
1734 /* destroy all children */
1735 while (!list_empty(&win
->children
))
1736 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
1737 while (!list_empty(&win
->unlinked
))
1738 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
1740 /* reset global window pointers, if the corresponding window is destroyed */
1741 if (win
== shell_window
) shell_window
= NULL
;
1742 if (win
== shell_listview
) shell_listview
= NULL
;
1743 if (win
== progman_window
) progman_window
= NULL
;
1744 if (win
== taskman_window
) taskman_window
= NULL
;
1745 free_hotkeys( win
->desktop
, win
->handle
);
1746 free_user_handle( win
->handle
);
1747 destroy_properties( win
);
1748 list_remove( &win
->entry
);
1749 if (is_desktop_window(win
))
1751 struct desktop
*desktop
= win
->desktop
;
1752 assert( desktop
->top_window
== win
|| desktop
->msg_window
== win
);
1753 if (desktop
->top_window
== win
) desktop
->top_window
= NULL
;
1754 else desktop
->msg_window
= NULL
;
1756 detach_window_thread( win
);
1757 if (win
->win_region
) free_region( win
->win_region
);
1758 if (win
->update_region
) free_region( win
->update_region
);
1759 if (win
->class) release_class( win
->class );
1761 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
1766 /* create a window */
1767 DECL_HANDLER(create_window
)
1769 struct window
*win
, *parent
= NULL
, *owner
= NULL
;
1770 struct unicode_str cls_name
;
1774 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1778 if (!(owner
= get_window( req
->owner
))) return;
1779 if (is_desktop_window(owner
)) owner
= NULL
;
1780 else if (parent
&& !is_desktop_window(parent
))
1782 /* an owned window must be created as top-level */
1783 set_error( STATUS_ACCESS_DENIED
);
1786 else /* owner must be a top-level window */
1787 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1790 get_req_unicode_str( &cls_name
);
1791 atom
= cls_name
.len
? find_global_atom( NULL
, &cls_name
) : req
->atom
;
1793 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1795 reply
->handle
= win
->handle
;
1796 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1797 reply
->owner
= win
->owner
;
1798 reply
->extra
= win
->nb_extra_bytes
;
1799 reply
->class_ptr
= get_class_client_ptr( win
->class );
1803 /* set the parent of a window */
1804 DECL_HANDLER(set_parent
)
1806 struct window
*win
, *parent
= NULL
;
1808 if (!(win
= get_window( req
->handle
))) return;
1809 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1811 if (is_desktop_window(win
))
1813 set_error( STATUS_INVALID_PARAMETER
);
1816 reply
->old_parent
= win
->parent
->handle
;
1817 reply
->full_parent
= parent
? parent
->handle
: 0;
1818 set_parent_window( win
, parent
);
1822 /* destroy a window */
1823 DECL_HANDLER(destroy_window
)
1825 struct window
*win
= get_window( req
->handle
);
1828 if (!is_desktop_window(win
)) destroy_window( win
);
1829 else if (win
->thread
== current
) detach_window_thread( win
);
1830 else set_error( STATUS_ACCESS_DENIED
);
1835 /* retrieve the desktop window for the current thread */
1836 DECL_HANDLER(get_desktop_window
)
1838 struct desktop
*desktop
= get_thread_desktop( current
, 0 );
1840 if (!desktop
) return;
1842 if (!desktop
->top_window
&& req
->force
) /* create it */
1844 if ((desktop
->top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
1846 detach_window_thread( desktop
->top_window
);
1847 desktop
->top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1851 if (!desktop
->msg_window
&& req
->force
) /* create it */
1853 static const WCHAR messageW
[] = {'M','e','s','s','a','g','e'};
1854 static const struct unicode_str name
= { messageW
, sizeof(messageW
) };
1855 atom_t atom
= add_global_atom( NULL
, &name
);
1856 if (atom
&& (desktop
->msg_window
= create_window( NULL
, NULL
, atom
, 0 )))
1858 detach_window_thread( desktop
->msg_window
);
1859 desktop
->msg_window
->style
= WS_POPUP
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1863 reply
->top_window
= desktop
->top_window
? desktop
->top_window
->handle
: 0;
1864 reply
->msg_window
= desktop
->msg_window
? desktop
->msg_window
->handle
: 0;
1865 release_object( desktop
);
1869 /* set a window owner */
1870 DECL_HANDLER(set_window_owner
)
1872 struct window
*win
= get_window( req
->handle
);
1873 struct window
*owner
= NULL
, *ptr
;
1876 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1877 if (is_desktop_window(win
))
1879 set_error( STATUS_ACCESS_DENIED
);
1883 /* make sure owner is not a successor of window */
1884 for (ptr
= owner
; ptr
; ptr
= ptr
->owner
? get_window( ptr
->owner
) : NULL
)
1888 set_error( STATUS_INVALID_PARAMETER
);
1893 reply
->prev_owner
= win
->owner
;
1894 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1898 /* get information from a window handle */
1899 DECL_HANDLER(get_window_info
)
1901 struct window
*win
= get_window( req
->handle
);
1903 reply
->full_handle
= 0;
1904 reply
->tid
= reply
->pid
= 0;
1907 reply
->full_handle
= win
->handle
;
1908 reply
->last_active
= win
->handle
;
1909 reply
->is_unicode
= win
->is_unicode
;
1910 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1913 reply
->tid
= get_thread_id( win
->thread
);
1914 reply
->pid
= get_process_id( win
->thread
->process
);
1915 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
1921 /* set some information in a window */
1922 DECL_HANDLER(set_window_info
)
1924 struct window
*win
= get_window( req
->handle
);
1927 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
1929 set_error( STATUS_ACCESS_DENIED
);
1932 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1933 req
->extra_offset
< -1 ||
1934 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1936 set_win32_error( ERROR_INVALID_INDEX
);
1939 if (req
->extra_offset
!= -1)
1941 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1943 else if (req
->flags
& SET_WIN_EXTRA
)
1945 set_win32_error( ERROR_INVALID_INDEX
);
1948 reply
->old_style
= win
->style
;
1949 reply
->old_ex_style
= win
->ex_style
;
1950 reply
->old_id
= win
->id
;
1951 reply
->old_instance
= win
->instance
;
1952 reply
->old_user_data
= win
->user_data
;
1953 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1954 if (req
->flags
& SET_WIN_EXSTYLE
)
1956 /* WS_EX_TOPMOST can only be changed for unlinked windows */
1957 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
1958 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
1959 if (!(win
->ex_style
& WS_EX_LAYERED
)) win
->is_layered
= 0;
1961 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1962 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1963 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
1964 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1965 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1966 &req
->extra_value
, req
->extra_size
);
1968 /* changing window style triggers a non-client paint */
1969 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1973 /* get a list of the window parents, up to the root of the tree */
1974 DECL_HANDLER(get_window_parents
)
1976 struct window
*ptr
, *win
= get_window( req
->handle
);
1978 user_handle_t
*data
;
1981 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1983 reply
->count
= total
;
1984 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1985 if (len
&& ((data
= set_reply_data_size( len
))))
1987 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1988 *data
++ = ptr
->handle
;
1993 /* get a list of the window children */
1994 DECL_HANDLER(get_window_children
)
1996 struct window
*parent
= NULL
;
1998 user_handle_t
*data
;
2000 struct unicode_str cls_name
;
2001 atom_t atom
= req
->atom
;
2002 struct desktop
*desktop
= NULL
;
2004 get_req_unicode_str( &cls_name
);
2005 if (cls_name
.len
&& !(atom
= find_global_atom( NULL
, &cls_name
))) return;
2009 if (!(desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
))) return;
2010 parent
= desktop
->top_window
;
2014 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
2015 if (!parent
&& !(desktop
= get_thread_desktop( current
, 0 ))) return;
2019 total
= get_children_windows( parent
, atom
, req
->tid
, NULL
, 0 );
2021 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
, NULL
, 0 ) +
2022 get_children_windows( desktop
->msg_window
, atom
, req
->tid
, NULL
, 0 );
2024 reply
->count
= total
;
2025 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2026 if (len
&& ((data
= set_reply_data_size( len
))))
2028 if (parent
) get_children_windows( parent
, atom
, req
->tid
, data
, len
/ sizeof(user_handle_t
) );
2031 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
,
2032 data
, len
/ sizeof(user_handle_t
) );
2034 len
-= total
* sizeof(user_handle_t
);
2035 if (len
>= sizeof(user_handle_t
))
2036 get_children_windows( desktop
->msg_window
, atom
, req
->tid
,
2037 data
, len
/ sizeof(user_handle_t
) );
2040 if (desktop
) release_object( desktop
);
2044 /* get a list of the window children that contain a given point */
2045 DECL_HANDLER(get_window_children_from_point
)
2047 struct user_handle_array array
;
2048 struct window
*parent
= get_window( req
->parent
);
2051 if (!parent
) return;
2053 array
.handles
= NULL
;
2056 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
2058 reply
->count
= array
.count
;
2059 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
2060 if (len
) set_reply_data_ptr( array
.handles
, len
);
2061 else free( array
.handles
);
2065 /* get window tree information from a window handle */
2066 DECL_HANDLER(get_window_tree
)
2068 struct window
*ptr
, *win
= get_window( req
->handle
);
2074 reply
->next_sibling
= 0;
2075 reply
->prev_sibling
= 0;
2076 reply
->first_sibling
= 0;
2077 reply
->last_sibling
= 0;
2078 reply
->first_child
= 0;
2079 reply
->last_child
= 0;
2083 struct window
*parent
= win
->parent
;
2084 reply
->parent
= parent
->handle
;
2085 reply
->owner
= win
->owner
;
2088 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
2089 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
2091 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
2092 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
2094 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2095 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2099 /* set the position and Z order of a window */
2100 DECL_HANDLER(set_window_pos
)
2102 rectangle_t window_rect
, client_rect
, visible_rect
;
2103 struct window
*previous
= NULL
;
2104 struct window
*win
= get_window( req
->handle
);
2105 unsigned int flags
= req
->flags
;
2108 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2110 if (!(flags
& SWP_NOZORDER
))
2112 switch ((int)req
->previous
)
2114 case 0: /* HWND_TOP */
2115 previous
= WINPTR_TOP
;
2117 case 1: /* HWND_BOTTOM */
2118 previous
= WINPTR_BOTTOM
;
2120 case -1: /* HWND_TOPMOST */
2121 previous
= WINPTR_TOPMOST
;
2123 case -2: /* HWND_NOTOPMOST */
2124 previous
= WINPTR_NOTOPMOST
;
2127 if (!(previous
= get_window( req
->previous
))) return;
2128 /* previous must be a sibling */
2129 if (previous
->parent
!= win
->parent
)
2131 set_error( STATUS_INVALID_PARAMETER
);
2136 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2139 /* windows that use UpdateLayeredWindow don't trigger repaints */
2140 if ((win
->ex_style
& WS_EX_LAYERED
) && !win
->is_layered
) flags
|= SWP_NOREDRAW
;
2142 /* window rectangle must be ordered properly */
2143 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2145 set_error( STATUS_INVALID_PARAMETER
);
2149 window_rect
= visible_rect
= req
->window
;
2150 client_rect
= req
->client
;
2151 if (get_req_data_size() >= sizeof(rectangle_t
))
2152 memcpy( &visible_rect
, get_req_data(), sizeof(rectangle_t
) );
2153 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2155 mirror_rect( &win
->parent
->client_rect
, &window_rect
);
2156 mirror_rect( &win
->parent
->client_rect
, &visible_rect
);
2157 mirror_rect( &win
->parent
->client_rect
, &client_rect
);
2160 if (get_req_data_size() >= 3 * sizeof(rectangle_t
))
2162 rectangle_t valid_rects
[2];
2163 memcpy( valid_rects
, (const rectangle_t
*)get_req_data() + 1, 2 * sizeof(rectangle_t
) );
2164 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2166 mirror_rect( &win
->parent
->client_rect
, &valid_rects
[0] );
2167 mirror_rect( &win
->parent
->client_rect
, &valid_rects
[1] );
2169 set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, valid_rects
);
2171 else set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, NULL
);
2173 reply
->new_style
= win
->style
;
2174 reply
->new_ex_style
= win
->ex_style
;
2178 /* get the window and client rectangles of a window */
2179 DECL_HANDLER(get_window_rectangles
)
2181 struct window
*win
= get_window( req
->handle
);
2185 reply
->window
= win
->window_rect
;
2186 reply
->visible
= win
->visible_rect
;
2187 reply
->client
= win
->client_rect
;
2189 switch (req
->relative
)
2192 offset_rect( &reply
->window
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2193 offset_rect( &reply
->visible
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2194 offset_rect( &reply
->client
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2195 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2197 mirror_rect( &win
->client_rect
, &reply
->window
);
2198 mirror_rect( &win
->client_rect
, &reply
->visible
);
2202 offset_rect( &reply
->window
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2203 offset_rect( &reply
->visible
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2204 offset_rect( &reply
->client
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2205 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2207 mirror_rect( &win
->window_rect
, &reply
->visible
);
2208 mirror_rect( &win
->window_rect
, &reply
->client
);
2212 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2214 mirror_rect( &win
->parent
->client_rect
, &reply
->window
);
2215 mirror_rect( &win
->parent
->client_rect
, &reply
->visible
);
2216 mirror_rect( &win
->parent
->client_rect
, &reply
->client
);
2220 client_to_screen_rect( win
->parent
, &reply
->window
);
2221 client_to_screen_rect( win
->parent
, &reply
->visible
);
2222 client_to_screen_rect( win
->parent
, &reply
->client
);
2225 set_error( STATUS_INVALID_PARAMETER
);
2231 /* get the window text */
2232 DECL_HANDLER(get_window_text
)
2234 struct window
*win
= get_window( req
->handle
);
2236 if (win
&& win
->text
)
2238 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
2239 if (len
> get_reply_max_size()) len
= get_reply_max_size();
2240 set_reply_data( win
->text
, len
);
2245 /* set the window text */
2246 DECL_HANDLER(set_window_text
)
2248 struct window
*win
= get_window( req
->handle
);
2253 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2256 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2257 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2266 /* get the coordinates offset between two windows */
2267 DECL_HANDLER(get_windows_offset
)
2270 int mirror_from
= 0, mirror_to
= 0;
2272 reply
->x
= reply
->y
= 0;
2275 if (!(win
= get_window( req
->from
))) return;
2276 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2279 reply
->x
+= win
->client_rect
.right
- win
->client_rect
.left
;
2281 while (win
&& !is_desktop_window(win
))
2283 reply
->x
+= win
->client_rect
.left
;
2284 reply
->y
+= win
->client_rect
.top
;
2290 if (!(win
= get_window( req
->to
))) return;
2291 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2294 reply
->x
-= win
->client_rect
.right
- win
->client_rect
.left
;
2296 while (win
&& !is_desktop_window(win
))
2298 reply
->x
-= win
->client_rect
.left
;
2299 reply
->y
-= win
->client_rect
.top
;
2303 if (mirror_from
) reply
->x
= -reply
->x
;
2304 reply
->mirror
= mirror_from
^ mirror_to
;
2308 /* get the visible region of a window */
2309 DECL_HANDLER(get_visible_region
)
2311 struct region
*region
;
2312 struct window
*top
, *win
= get_window( req
->window
);
2316 top
= get_top_clipping_window( win
);
2317 if ((region
= get_visible_region( win
, req
->flags
)))
2320 map_win_region_to_screen( win
, region
);
2321 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2322 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2324 reply
->top_win
= top
->handle
;
2325 reply
->top_rect
= top
->visible_rect
;
2327 if (!is_desktop_window(win
))
2329 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2330 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2331 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2335 reply
->win_rect
.left
= 0;
2336 reply
->win_rect
.top
= 0;
2337 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2338 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2343 /* get the window region */
2344 DECL_HANDLER(get_window_region
)
2347 struct window
*win
= get_window( req
->window
);
2350 if (!win
->win_region
) return;
2352 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2354 struct region
*region
= create_empty_region();
2356 if (!region
) return;
2357 if (!copy_region( region
, win
->win_region
))
2359 free_region( region
);
2362 mirror_region( &win
->window_rect
, region
);
2363 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2365 else data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2367 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2371 /* set the window region */
2372 DECL_HANDLER(set_window_region
)
2374 struct region
*region
= NULL
;
2375 struct window
*win
= get_window( req
->window
);
2379 if (get_req_data_size()) /* no data means remove the region completely */
2381 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2383 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->window_rect
, region
);
2385 set_window_region( win
, region
, req
->redraw
);
2389 /* get a window update region */
2390 DECL_HANDLER(get_update_region
)
2393 unsigned int flags
= req
->flags
;
2394 struct window
*from_child
= NULL
;
2395 struct window
*win
= get_window( req
->window
);
2400 if (req
->from_child
)
2404 if (!(from_child
= get_window( req
->from_child
))) return;
2406 /* make sure from_child is a child of win */
2408 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2411 set_error( STATUS_INVALID_PARAMETER
);
2416 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2418 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2419 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2422 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2423 reply
->child
= win
->handle
;
2425 if (flags
& UPDATE_NOREGION
) return;
2427 if (win
->update_region
)
2429 /* convert update region to screen coordinates */
2430 struct region
*region
= create_empty_region();
2432 if (!region
) return;
2433 if (!copy_region( region
, win
->update_region
))
2435 free_region( region
);
2438 map_win_region_to_screen( win
, region
);
2439 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2440 &reply
->total_size
))) return;
2441 set_reply_data_ptr( data
, reply
->total_size
);
2444 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2446 validate_parents( win
);
2447 validate_whole_window( win
);
2451 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2452 if (reply
->flags
& UPDATE_ERASE
)
2454 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2455 /* desktop window only gets erased, not repainted */
2456 if (is_desktop_window(win
)) validate_whole_window( win
);
2462 /* update the z order of a window so that a given rectangle is fully visible */
2463 DECL_HANDLER(update_window_zorder
)
2465 rectangle_t tmp
, rect
= req
->rect
;
2466 struct window
*ptr
, *win
= get_window( req
->window
);
2468 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2469 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_rect( &win
->client_rect
, &rect
);
2470 offset_rect( &rect
, win
->client_rect
.left
, win
->client_rect
.top
);
2472 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2474 if (ptr
== win
) break;
2475 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2476 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2477 if (ptr
->is_layered
&& (ptr
->layered_flags
& LWA_COLORKEY
)) continue;
2478 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &rect
)) continue;
2479 if (ptr
->win_region
)
2482 offset_rect( &tmp
, -ptr
->window_rect
.left
, -ptr
->window_rect
.top
);
2483 if (!rect_in_region( ptr
->win_region
, &tmp
)) continue;
2485 /* found a window obscuring the rectangle, now move win above this one */
2486 /* making sure to not violate the topmost rule */
2487 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2489 list_remove( &win
->entry
);
2490 list_add_before( &ptr
->entry
, &win
->entry
);
2497 /* mark parts of a window as needing a redraw */
2498 DECL_HANDLER(redraw_window
)
2500 struct region
*region
= NULL
;
2501 struct window
*win
= get_window( req
->window
);
2504 if (!is_visible( win
)) return; /* nothing to do */
2506 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2508 if (get_req_data_size()) /* no data means whole rectangle */
2510 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2512 if (win
->ex_style
& WS_EX_LAYOUTRTL
) mirror_region( &win
->client_rect
, region
);
2516 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2518 if (region
) free_region( region
);
2522 /* set a window property */
2523 DECL_HANDLER(set_window_property
)
2525 struct unicode_str name
;
2526 struct window
*win
= get_window( req
->window
);
2530 get_req_unicode_str( &name
);
2533 atom_t atom
= add_global_atom( NULL
, &name
);
2536 set_property( win
, atom
, req
->data
, PROP_TYPE_STRING
);
2537 release_global_atom( NULL
, atom
);
2540 else set_property( win
, req
->atom
, req
->data
, PROP_TYPE_ATOM
);
2544 /* remove a window property */
2545 DECL_HANDLER(remove_window_property
)
2547 struct unicode_str name
;
2548 struct window
*win
= get_window( req
->window
);
2550 get_req_unicode_str( &name
);
2553 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2554 if (atom
) reply
->data
= remove_property( win
, atom
);
2559 /* get a window property */
2560 DECL_HANDLER(get_window_property
)
2562 struct unicode_str name
;
2563 struct window
*win
= get_window( req
->window
);
2565 get_req_unicode_str( &name
);
2568 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2569 if (atom
) reply
->data
= get_property( win
, atom
);
2574 /* get the list of properties of a window */
2575 DECL_HANDLER(get_window_properties
)
2577 property_data_t
*data
;
2578 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2579 struct window
*win
= get_window( req
->window
);
2584 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2585 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2586 reply
->total
= count
;
2588 if (count
> max
) count
= max
;
2589 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2591 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2593 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2594 data
->atom
= win
->properties
[i
].atom
;
2595 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2596 data
->data
= win
->properties
[i
].data
;
2603 /* get the new window pointer for a global window, checking permissions */
2604 /* helper for set_global_windows request */
2605 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2614 set_error( STATUS_ACCESS_DENIED
);
2617 *win
= get_window( handle
);
2618 return (*win
!= NULL
);
2621 /* Set/get the global windows */
2622 DECL_HANDLER(set_global_windows
)
2624 struct window
*new_shell_window
= shell_window
;
2625 struct window
*new_shell_listview
= shell_listview
;
2626 struct window
*new_progman_window
= progman_window
;
2627 struct window
*new_taskman_window
= taskman_window
;
2629 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2630 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2631 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2632 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2634 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2636 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2637 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2639 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2641 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2643 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2645 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2647 shell_window
= new_shell_window
;
2648 shell_listview
= new_shell_listview
;
2649 progman_window
= new_progman_window
;
2650 taskman_window
= new_taskman_window
;
2653 /* retrieve layered info for a window */
2654 DECL_HANDLER(get_window_layered_info
)
2656 struct window
*win
= get_window( req
->handle
);
2660 if (win
->is_layered
)
2662 reply
->color_key
= win
->color_key
;
2663 reply
->alpha
= win
->alpha
;
2664 reply
->flags
= win
->layered_flags
;
2666 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
2670 /* set layered info for a window */
2671 DECL_HANDLER(set_window_layered_info
)
2673 struct window
*win
= get_window( req
->handle
);
2677 if (win
->ex_style
& WS_EX_LAYERED
)
2679 if (req
->flags
& LWA_ALPHA
) win
->alpha
= req
->alpha
;
2680 else if (!win
->is_layered
) win
->alpha
= 0; /* alpha init value is 0 */
2682 win
->color_key
= req
->color_key
;
2683 win
->layered_flags
= req
->flags
;
2684 win
->is_layered
= 1;
2686 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);