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 /* attempt to close the desktop window when the last process using it is gone */
398 void close_desktop_window( struct desktop
*desktop
)
400 struct window
*win
= desktop
->top_window
;
401 if (win
&& win
->thread
) post_message( win
->handle
, WM_CLOSE
, 0, 0 );
404 /* create a new window structure (note: the window is not linked in the window tree) */
405 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
406 atom_t atom
, mod_handle_t instance
)
408 static const rectangle_t empty_rect
;
410 struct window
*win
= NULL
;
411 struct desktop
*desktop
;
412 struct window_class
*class;
414 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
416 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
418 release_object( desktop
);
422 if (!parent
) /* null parent is only allowed for desktop or HWND_MESSAGE top window */
424 if (is_desktop_class( class ))
425 parent
= desktop
->top_window
; /* use existing desktop if any */
426 else if (is_hwnd_message_class( class ))
427 /* use desktop window if message window is already created */
428 parent
= desktop
->msg_window
? desktop
->top_window
: NULL
;
429 else if (!(parent
= desktop
->top_window
)) /* must already have a desktop then */
431 set_error( STATUS_ACCESS_DENIED
);
436 /* parent must be on the same desktop */
437 if (parent
&& parent
->desktop
!= desktop
)
439 set_error( STATUS_ACCESS_DENIED
);
443 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
444 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
446 win
->parent
= parent
;
447 win
->owner
= owner
? owner
->handle
: 0;
448 win
->thread
= current
;
449 win
->desktop
= desktop
;
452 win
->last_active
= win
->handle
;
453 win
->win_region
= NULL
;
454 win
->update_region
= NULL
;
464 win
->paint_flags
= 0;
467 win
->properties
= NULL
;
468 win
->nb_extra_bytes
= extra_bytes
;
469 win
->window_rect
= win
->visible_rect
= win
->client_rect
= empty_rect
;
470 memset( win
->extra_bytes
, 0, extra_bytes
);
471 list_init( &win
->children
);
472 list_init( &win
->unlinked
);
474 /* if parent belongs to a different thread and the window isn't */
475 /* top-level, attach the two threads */
476 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
478 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
480 else /* otherwise just make sure that the thread has a message queue */
482 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
485 /* put it on parent unlinked list */
486 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
489 list_init( &win
->entry
);
490 if (is_desktop_class( class ))
492 assert( !desktop
->top_window
);
493 desktop
->top_window
= win
;
494 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
498 assert( !desktop
->msg_window
);
499 desktop
->msg_window
= win
;
503 current
->desktop_users
++;
509 if (win
->handle
) free_user_handle( win
->handle
);
512 release_object( desktop
);
513 release_class( class );
517 /* destroy all windows belonging to a given thread */
518 void destroy_thread_windows( struct thread
*thread
)
520 user_handle_t handle
= 0;
523 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
525 if (win
->thread
!= thread
) continue;
526 if (is_desktop_window( win
)) detach_window_thread( win
);
527 else destroy_window( win
);
531 /* get the desktop window */
532 static struct window
*get_desktop_window( struct thread
*thread
)
534 struct window
*top_window
;
535 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
537 if (!desktop
) return NULL
;
538 top_window
= desktop
->top_window
;
539 release_object( desktop
);
543 /* check whether child is a descendant of parent */
544 int is_child_window( user_handle_t parent
, user_handle_t child
)
546 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
547 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
549 if (!child_ptr
|| !parent_ptr
) return 0;
550 while (child_ptr
->parent
)
552 if (child_ptr
->parent
== parent_ptr
) return 1;
553 child_ptr
= child_ptr
->parent
;
558 /* check whether window is a top-level window */
559 int is_top_level_window( user_handle_t window
)
561 struct window
*win
= get_user_object( window
, USER_WINDOW
);
562 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
565 /* make a window active if possible */
566 int make_window_active( user_handle_t window
)
568 struct window
*owner
, *win
= get_window( window
);
572 /* set last active for window and its owner */
573 win
->last_active
= win
->handle
;
574 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
578 /* increment (or decrement) the window paint count */
579 static inline void inc_window_paint_count( struct window
*win
, int incr
)
581 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
584 /* check if window and all its ancestors are visible */
585 static int is_visible( const struct window
*win
)
589 if (!(win
->style
& WS_VISIBLE
)) return 0;
591 /* if parent is minimized children are not visible */
592 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
597 /* same as is_visible but takes a window handle */
598 int is_window_visible( user_handle_t window
)
600 struct window
*win
= get_user_object( window
, USER_WINDOW
);
602 return is_visible( win
);
605 int is_window_transparent( user_handle_t window
)
607 struct window
*win
= get_user_object( window
, USER_WINDOW
);
609 return (win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
);
612 /* check if point is inside the window */
613 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
615 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
616 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
617 return 0; /* disabled child */
618 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
619 return 0; /* transparent */
620 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
621 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
622 return 0; /* not in window */
623 if (win
->win_region
&&
624 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
625 return 0; /* not in window region */
629 /* fill an array with the handles of the children of a specified window */
630 static unsigned int get_children_windows( struct window
*parent
, atom_t atom
, thread_id_t tid
,
631 user_handle_t
*handles
, unsigned int max_count
)
634 unsigned int count
= 0;
636 if (!parent
) return 0;
638 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
640 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
641 if (tid
&& get_thread_id(ptr
->thread
) != tid
) continue;
644 if (count
>= max_count
) break;
645 handles
[count
] = ptr
->handle
;
652 /* find child of 'parent' that contains the given point (in parent-relative coords) */
653 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
657 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
659 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
661 /* if window is minimized or disabled, return at once */
662 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
664 /* if point is not in client area, return at once */
665 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
666 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
669 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
671 return parent
; /* not found any child */
674 /* find all children of 'parent' that contain the given point */
675 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
676 struct user_handle_array
*array
)
680 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
682 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
684 /* if point is in client area, and window is not minimized or disabled, check children */
685 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
686 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
687 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
689 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
690 y
- ptr
->client_rect
.top
, array
))
694 /* now add window to the array */
695 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
700 /* find window containing point (in absolute coords) */
701 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
705 if (!desktop
->top_window
) return 0;
706 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
710 /* return list of all windows containing point (in absolute coords) */
711 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
715 /* make point relative to top window */
716 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
718 x
-= ptr
->client_rect
.left
;
719 y
-= ptr
->client_rect
.top
;
722 if (!is_point_in_window( top
, x
, y
)) return 1;
724 /* if point is in client area, and window is not minimized or disabled, check children */
725 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
726 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
727 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
729 if (!is_desktop_window(top
))
731 x
-= top
->client_rect
.left
;
732 y
-= top
->client_rect
.top
;
734 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
736 /* now add window to the array */
737 if (!add_handle_to_array( array
, top
->handle
)) return 0;
742 /* return the thread owning a window */
743 struct thread
*get_window_thread( user_handle_t handle
)
745 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
746 if (!win
|| !win
->thread
) return NULL
;
747 return (struct thread
*)grab_object( win
->thread
);
751 /* check if any area of a window needs repainting */
752 static inline int win_needs_repaint( struct window
*win
)
754 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
758 /* find a child of the specified window that needs repainting */
759 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
761 struct window
*ptr
, *ret
= NULL
;
763 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
765 if (!(ptr
->style
& WS_VISIBLE
)) continue;
766 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
768 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
769 ret
= find_child_to_repaint( ptr
, thread
);
773 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
775 /* transparent window, check for non-transparent sibling to paint first */
776 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
778 if (!(ptr
->style
& WS_VISIBLE
)) continue;
779 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
780 if (ptr
->thread
!= thread
) continue;
781 if (win_needs_repaint( ptr
)) return ptr
;
788 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
789 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
791 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
);
793 if (!top_window
) return 0;
795 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
796 else win
= find_child_to_repaint( top_window
, thread
);
800 /* check that it is a child of the specified parent */
801 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
802 if (ptr
->handle
== parent
) break;
803 /* otherwise don't return any window, we don't repaint a child before its parent */
804 if (!ptr
) win
= NULL
;
807 win
->paint_flags
&= ~PAINT_INTERNAL
;
812 /* intersect the window region with the specified region, relative to the window parent */
813 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
815 /* make region relative to window rect */
816 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
817 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
818 /* make region relative to parent again */
819 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
824 /* convert coordinates from client to screen coords */
825 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
827 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
829 *x
+= win
->client_rect
.left
;
830 *y
+= win
->client_rect
.top
;
834 /* convert coordinates from client to screen coords */
835 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
837 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
839 rect
->left
+= win
->client_rect
.left
;
840 rect
->right
+= win
->client_rect
.left
;
841 rect
->top
+= win
->client_rect
.top
;
842 rect
->bottom
+= win
->client_rect
.top
;
846 /* map the region from window to screen coordinates */
847 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
849 if (!is_desktop_window(win
))
851 int x
= win
->window_rect
.left
;
852 int y
= win
->window_rect
.top
;
853 client_to_screen( win
->parent
, &x
, &y
);
854 offset_region( region
, x
, y
);
859 /* clip all children of a given window out of the visible region */
860 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
861 struct region
*region
, int offset_x
, int offset_y
)
864 struct region
*tmp
= create_empty_region();
866 if (!tmp
) return NULL
;
867 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
869 if (ptr
== last
) break;
870 if (!(ptr
->style
& WS_VISIBLE
)) continue;
871 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
872 set_region_rect( tmp
, &ptr
->visible_rect
);
873 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
878 offset_region( tmp
, offset_x
, offset_y
);
879 if (!(region
= subtract_region( region
, region
, tmp
))) break;
880 if (is_region_empty( region
)) break;
887 /* compute the intersection of two rectangles; return 0 if the result is empty */
888 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
890 dst
->left
= max( src1
->left
, src2
->left
);
891 dst
->top
= max( src1
->top
, src2
->top
);
892 dst
->right
= min( src1
->right
, src2
->right
);
893 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
894 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
898 /* offset the coordinates of a rectangle */
899 static inline void offset_rect( rectangle_t
*rect
, int offset_x
, int offset_y
)
901 rect
->left
+= offset_x
;
902 rect
->top
+= offset_y
;
903 rect
->right
+= offset_x
;
904 rect
->bottom
+= offset_y
;
908 /* mirror a rectangle respective to the window client area */
909 static inline void mirror_rect( const rectangle_t
*window_rect
, rectangle_t
*rect
)
911 int width
= window_rect
->right
- window_rect
->left
;
912 int tmp
= rect
->left
;
913 rect
->left
= width
- rect
->right
;
914 rect
->right
= width
- tmp
;
918 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
919 static void set_region_client_rect( struct region
*region
, struct window
*win
)
923 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
924 set_region_rect( region
, &rect
);
928 /* get the top-level window to clip against for a given window */
929 static inline struct window
*get_top_clipping_window( struct window
*win
)
931 while (win
->parent
&& !is_desktop_window(win
->parent
)) win
= win
->parent
;
936 /* compute the visible region of a window, in window coordinates */
937 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
939 struct region
*tmp
= NULL
, *region
;
940 int offset_x
, offset_y
;
942 if (!(region
= create_empty_region())) return NULL
;
944 /* first check if all ancestors are visible */
946 if (!is_visible( win
)) return region
; /* empty region */
948 /* create a region relative to the window itself */
950 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
952 set_region_client_rect( region
, win
->parent
);
953 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
955 else if (flags
& DCX_WINDOW
)
957 set_region_rect( region
, &win
->visible_rect
);
958 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
962 set_region_client_rect( region
, win
);
963 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
968 if (flags
& DCX_CLIPCHILDREN
)
970 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
973 offset_x
= win
->client_rect
.left
;
974 offset_y
= win
->client_rect
.top
;
976 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
979 /* clip siblings of ancestors */
981 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
984 offset_x
= win
->window_rect
.left
;
985 offset_y
= win
->window_rect
.top
;
988 if ((tmp
= create_empty_region()) != NULL
)
992 /* we don't clip out top-level siblings as that's up to the native windowing system */
993 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
995 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
996 if (is_region_empty( region
)) break;
998 /* clip to parent client area */
1000 if (!is_desktop_window(win
))
1002 offset_x
+= win
->client_rect
.left
;
1003 offset_y
+= win
->client_rect
.top
;
1004 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
1006 set_region_client_rect( tmp
, win
);
1007 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
1008 if (!intersect_region( region
, region
, tmp
)) goto error
;
1009 if (is_region_empty( region
)) break;
1013 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
1017 if (tmp
) free_region( tmp
);
1018 free_region( region
);
1023 /* get the window class of a window */
1024 struct window_class
* get_window_class( user_handle_t window
)
1027 if (!(win
= get_window( window
))) return NULL
;
1028 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
1032 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1033 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1034 static int get_window_visible_rect( struct window
*win
, rectangle_t
*rect
, int frame
)
1036 int offset_x
= 0, offset_y
= 0;
1038 if (!(win
->style
& WS_VISIBLE
)) return 0;
1040 *rect
= frame
? win
->window_rect
: win
->client_rect
;
1041 if (!is_desktop_window(win
))
1043 offset_x
= win
->window_rect
.left
;
1044 offset_y
= win
->window_rect
.top
;
1050 if (!(win
->style
& WS_VISIBLE
) || win
->style
& WS_MINIMIZE
) return 0;
1051 if (!is_desktop_window(win
))
1053 offset_x
+= win
->client_rect
.left
;
1054 offset_y
+= win
->client_rect
.top
;
1055 offset_rect( rect
, win
->client_rect
.left
, win
->client_rect
.top
);
1057 if (!intersect_rect( rect
, rect
, &win
->client_rect
)) return 0;
1058 if (!intersect_rect( rect
, rect
, &win
->window_rect
)) return 0;
1060 offset_rect( rect
, -offset_x
, -offset_y
);
1064 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1065 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1066 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1071 if (!get_window_visible_rect( win
, &rect
, frame
)) return NULL
;
1072 if (!(tmp
= create_empty_region())) return NULL
;
1073 set_region_rect( tmp
, &rect
);
1077 /* map it to client coords */
1078 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1079 win
->window_rect
.top
- win
->client_rect
.top
);
1081 /* intersect specified region with bounding rect */
1082 if (!intersect_region( tmp
, region
, tmp
)) goto done
;
1083 if (is_region_empty( tmp
)) goto done
;
1085 /* map it back to window coords */
1086 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1087 win
->client_rect
.top
- win
->window_rect
.top
);
1097 /* set a region as new update region for the window */
1098 static void set_update_region( struct window
*win
, struct region
*region
)
1100 if (region
&& !is_region_empty( region
))
1102 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1103 else free_region( win
->update_region
);
1104 win
->update_region
= region
;
1108 if (win
->update_region
)
1110 inc_window_paint_count( win
, -1 );
1111 free_region( win
->update_region
);
1113 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1114 win
->update_region
= NULL
;
1115 if (region
) free_region( region
);
1120 /* add a region to the update region; the passed region is freed or reused */
1121 static int add_update_region( struct window
*win
, struct region
*region
)
1123 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1125 free_region( region
);
1128 set_update_region( win
, region
);
1133 /* crop the update region of children to the specified rectangle, in client coords */
1134 static void crop_children_update_region( struct window
*win
, rectangle_t
*rect
)
1136 struct window
*child
;
1138 rectangle_t child_rect
;
1140 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1142 if (!(child
->style
& WS_VISIBLE
)) continue;
1143 if (!rect
) /* crop everything out */
1145 crop_children_update_region( child
, NULL
);
1146 set_update_region( child
, NULL
);
1150 /* nothing to do if child is completely inside rect */
1151 if (child
->window_rect
.left
>= rect
->left
&&
1152 child
->window_rect
.top
>= rect
->top
&&
1153 child
->window_rect
.right
<= rect
->right
&&
1154 child
->window_rect
.bottom
<= rect
->bottom
) continue;
1156 /* map to child client coords and crop grand-children */
1158 offset_rect( &child_rect
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1159 crop_children_update_region( child
, &child_rect
);
1161 /* now crop the child itself */
1162 if (!child
->update_region
) continue;
1163 if (!(tmp
= create_empty_region())) continue;
1164 set_region_rect( tmp
, rect
);
1165 offset_region( tmp
, -child
->window_rect
.left
, -child
->window_rect
.top
);
1166 if (intersect_region( tmp
, child
->update_region
, tmp
)) set_update_region( child
, tmp
);
1167 else free_region( tmp
);
1172 /* validate the non client area of a window */
1173 static void validate_non_client( struct window
*win
)
1178 if (!win
->update_region
) return; /* nothing to do */
1180 /* get client rect in window coords */
1181 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1182 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1183 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1184 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1186 if ((tmp
= create_empty_region()))
1188 set_region_rect( tmp
, &rect
);
1189 if (intersect_region( tmp
, win
->update_region
, tmp
))
1190 set_update_region( win
, tmp
);
1194 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1198 /* validate a window completely so that we don't get any further paint messages for it */
1199 static void validate_whole_window( struct window
*win
)
1201 set_update_region( win
, NULL
);
1203 if (win
->paint_flags
& PAINT_INTERNAL
)
1205 win
->paint_flags
&= ~PAINT_INTERNAL
;
1206 inc_window_paint_count( win
, -1 );
1211 /* validate a window's children so that we don't get any further paint messages for it */
1212 static void validate_children( struct window
*win
)
1214 struct window
*child
;
1216 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1218 if (!(child
->style
& WS_VISIBLE
)) continue;
1219 validate_children(child
);
1220 validate_whole_window(child
);
1225 /* validate the update region of a window on all parents; helper for get_update_region */
1226 static void validate_parents( struct window
*child
)
1228 int offset_x
= 0, offset_y
= 0;
1229 struct window
*win
= child
;
1230 struct region
*tmp
= NULL
;
1232 if (!child
->update_region
) return;
1236 /* map to parent client coords */
1237 offset_x
+= win
->window_rect
.left
;
1238 offset_y
+= win
->window_rect
.top
;
1242 /* and now map to window coords */
1243 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1244 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1246 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1248 if (!tmp
&& !(tmp
= create_empty_region())) return;
1249 offset_region( child
->update_region
, offset_x
, offset_y
);
1250 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1252 set_update_region( win
, tmp
);
1255 /* restore child coords */
1256 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1259 if (tmp
) free_region( tmp
);
1263 /* add/subtract a region (in client coordinates) to the update region of the window */
1264 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1267 struct window
*child
;
1269 if (flags
& RDW_INVALIDATE
)
1271 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1273 if (!add_update_region( win
, tmp
)) return;
1275 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1276 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1278 else if (flags
& RDW_VALIDATE
)
1280 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1282 set_update_region( win
, NULL
);
1284 else if (win
->update_region
)
1286 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1288 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1293 set_update_region( win
, tmp
);
1295 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1296 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1300 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1302 win
->paint_flags
|= PAINT_INTERNAL
;
1303 inc_window_paint_count( win
, 1 );
1305 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1307 win
->paint_flags
&= ~PAINT_INTERNAL
;
1308 inc_window_paint_count( win
, -1 );
1311 /* now process children recursively */
1313 if (flags
& RDW_NOCHILDREN
) return;
1314 if (win
->style
& WS_MINIMIZE
) return;
1315 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1317 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1319 /* map to client coordinates */
1320 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1321 win
->window_rect
.top
- win
->client_rect
.top
);
1323 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1325 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1327 if (!(child
->style
& WS_VISIBLE
)) continue;
1328 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1329 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1330 redraw_window( child
, tmp
, 1, flags
);
1331 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1337 /* retrieve the update flags for a window depending on the state of the update region */
1338 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1340 unsigned int ret
= 0;
1342 if (flags
& UPDATE_NONCLIENT
)
1344 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1346 if (flags
& UPDATE_ERASE
)
1348 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1350 if (flags
& UPDATE_PAINT
)
1352 if (win
->update_region
)
1354 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1355 ret
|= UPDATE_PAINT
;
1358 if (flags
& UPDATE_INTERNALPAINT
)
1360 if (win
->paint_flags
& PAINT_INTERNAL
)
1362 ret
|= UPDATE_INTERNALPAINT
;
1363 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1370 /* iterate through the children of the given window until we find one with some update flags */
1371 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1372 unsigned int flags
, struct window
**child
)
1375 unsigned int ret
= 0;
1377 /* first make sure we want to iterate children at all */
1379 if (win
->style
& WS_MINIMIZE
) return 0;
1381 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1382 * here we only want to repaint children of windows that clip them, others
1383 * need to wait for WM_PAINT to be done in the parent first.
1385 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1387 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1389 if (from_child
) /* skip all children until from_child is found */
1391 if (ptr
== from_child
) from_child
= NULL
;
1394 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1395 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1400 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1405 /* iterate through children and siblings of the given window until we find one with some update flags */
1406 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1407 unsigned int flags
, struct window
**child
)
1410 struct window
*ptr
, *from_sibling
= NULL
;
1412 /* if some parent is not visible start from the next sibling */
1414 if (!is_visible( win
)) return 0;
1415 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1417 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1418 if (ptr
== win
) break;
1421 /* non-client painting must be delayed if one of the parents is going to
1422 * be repainted and doesn't clip children */
1424 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1426 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1428 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1431 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1433 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1435 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1436 if (ptr
== win
) break;
1442 /* check window itself (only if not restarting from a child) */
1446 if ((ret
= get_update_flags( win
, flags
)))
1454 /* now check children */
1456 if (flags
& UPDATE_NOCHILDREN
) return 0;
1459 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1460 from_sibling
= from_child
;
1463 /* then check siblings and parent siblings */
1465 while (from_sibling
->parent
&& from_sibling
!= win
)
1467 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1469 from_sibling
= from_sibling
->parent
;
1475 /* expose the areas revealed by a vis region change on the window parent */
1476 /* returns the region exposed on the window itself (in client coordinates) */
1477 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1478 struct region
*old_vis_rgn
)
1480 struct region
*new_vis_rgn
, *exposed_rgn
;
1482 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1484 if ((exposed_rgn
= create_empty_region()))
1486 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1488 /* make it relative to the new client area */
1489 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1490 win
->window_rect
.top
- win
->client_rect
.top
);
1494 free_region( exposed_rgn
);
1501 /* make it relative to the old window pos for subtracting */
1502 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1503 win
->window_rect
.top
- old_window_rect
->top
);
1505 if ((win
->parent
->style
& WS_CLIPCHILDREN
) ?
1506 subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) :
1507 xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1509 if (!is_region_empty( new_vis_rgn
))
1511 /* make it relative to parent */
1512 offset_region( new_vis_rgn
, old_window_rect
->left
, old_window_rect
->top
);
1513 redraw_window( win
->parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1517 free_region( new_vis_rgn
);
1522 /* set the window and client rectangles, updating the update region if necessary */
1523 static void set_window_pos( struct window
*win
, struct window
*previous
,
1524 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1525 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1526 const rectangle_t
*valid_rects
)
1528 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1529 const rectangle_t old_window_rect
= win
->window_rect
;
1530 const rectangle_t old_visible_rect
= win
->visible_rect
;
1531 const rectangle_t old_client_rect
= win
->client_rect
;
1533 int client_changed
, frame_changed
;
1534 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1536 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1538 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1540 /* set the new window info before invalidating anything */
1542 win
->window_rect
= *window_rect
;
1543 win
->visible_rect
= *visible_rect
;
1544 win
->client_rect
= *client_rect
;
1545 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1546 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1547 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1549 /* if the window is not visible, everything is easy */
1550 if (!visible
) return;
1552 /* expose anything revealed by the change */
1554 if (!(swp_flags
& SWP_NOREDRAW
))
1555 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1557 if (!(win
->style
& WS_VISIBLE
))
1559 /* clear the update region since the window is no longer visible */
1560 validate_whole_window( win
);
1561 validate_children( win
);
1565 /* crop update region to the new window rect */
1567 if (win
->update_region
)
1569 if (get_window_visible_rect( win
, &rect
, 1 ))
1571 struct region
*tmp
= create_empty_region();
1574 set_region_rect( tmp
, &rect
);
1575 if (intersect_region( tmp
, win
->update_region
, tmp
))
1576 set_update_region( win
, tmp
);
1581 else set_update_region( win
, NULL
); /* visible rect is empty */
1584 /* crop children regions to the new window rect */
1586 if (get_window_visible_rect( win
, &rect
, 0 ))
1588 /* map to client coords */
1589 offset_rect( &rect
, win
->window_rect
.left
- win
->client_rect
.left
,
1590 win
->window_rect
.top
- win
->client_rect
.top
);
1591 crop_children_update_region( win
, &rect
);
1593 else crop_children_update_region( win
, NULL
);
1595 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1597 /* expose the whole non-client area if it changed in any way */
1599 if (swp_flags
& SWP_NOCOPYBITS
)
1601 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1602 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1603 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1604 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1608 /* assume the bits have been moved to follow the window rect */
1609 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1610 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1611 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1612 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1613 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1614 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1615 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1616 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1617 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1618 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1619 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1620 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1621 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
||
1623 memcmp( &valid_rects
[0], client_rect
, sizeof(*client_rect
) ));
1626 if (frame_changed
|| client_changed
)
1628 struct region
*win_rgn
= old_vis_rgn
; /* reuse previous region */
1630 set_region_rect( win_rgn
, window_rect
);
1633 /* subtract the valid portion of client rect from the total region */
1634 struct region
*tmp
= create_empty_region();
1637 set_region_rect( tmp
, &valid_rects
[0] );
1638 if (subtract_region( tmp
, win_rgn
, tmp
)) win_rgn
= tmp
;
1639 else free_region( tmp
);
1642 if (!is_desktop_window(win
))
1643 offset_region( win_rgn
, -client_rect
->left
, -client_rect
->top
);
1646 union_region( exposed_rgn
, exposed_rgn
, win_rgn
);
1647 if (win_rgn
!= old_vis_rgn
) free_region( win_rgn
);
1651 exposed_rgn
= win_rgn
;
1652 if (win_rgn
== old_vis_rgn
) old_vis_rgn
= NULL
;
1657 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1660 if (old_vis_rgn
) free_region( old_vis_rgn
);
1661 if (exposed_rgn
) free_region( exposed_rgn
);
1662 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1666 /* set the window region, updating the update region if necessary */
1667 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1669 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1671 /* no need to redraw if window is not visible */
1672 if (redraw
&& !is_visible( win
)) redraw
= 0;
1674 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1676 if (win
->win_region
) free_region( win
->win_region
);
1677 win
->win_region
= region
;
1679 /* expose anything revealed by the change */
1680 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1682 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1683 free_region( exposed_rgn
);
1686 if (old_vis_rgn
) free_region( old_vis_rgn
);
1687 clear_error(); /* we ignore out of memory errors since the region has been set */
1691 /* destroy a window */
1692 void destroy_window( struct window
*win
)
1694 /* hide the window */
1695 if (is_visible(win
))
1697 struct region
*vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1698 win
->style
&= ~WS_VISIBLE
;
1701 struct region
*exposed_rgn
= expose_window( win
, &win
->window_rect
, vis_rgn
);
1702 if (exposed_rgn
) free_region( exposed_rgn
);
1703 free_region( vis_rgn
);
1705 validate_whole_window( win
);
1706 validate_children( win
);
1709 /* destroy all children */
1710 while (!list_empty(&win
->children
))
1711 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
1712 while (!list_empty(&win
->unlinked
))
1713 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
1715 /* reset global window pointers, if the corresponding window is destroyed */
1716 if (win
== shell_window
) shell_window
= NULL
;
1717 if (win
== shell_listview
) shell_listview
= NULL
;
1718 if (win
== progman_window
) progman_window
= NULL
;
1719 if (win
== taskman_window
) taskman_window
= NULL
;
1720 free_user_handle( win
->handle
);
1721 destroy_properties( win
);
1722 list_remove( &win
->entry
);
1723 if (is_desktop_window(win
))
1725 struct desktop
*desktop
= win
->desktop
;
1726 assert( desktop
->top_window
== win
|| desktop
->msg_window
== win
);
1727 if (desktop
->top_window
== win
) desktop
->top_window
= NULL
;
1728 else desktop
->msg_window
= NULL
;
1730 detach_window_thread( win
);
1731 if (win
->win_region
) free_region( win
->win_region
);
1732 if (win
->update_region
) free_region( win
->update_region
);
1733 if (win
->class) release_class( win
->class );
1735 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
1740 /* create a window */
1741 DECL_HANDLER(create_window
)
1743 struct window
*win
, *parent
= NULL
, *owner
= NULL
;
1744 struct unicode_str cls_name
;
1748 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1752 if (!(owner
= get_window( req
->owner
))) return;
1753 if (is_desktop_window(owner
)) owner
= NULL
;
1754 else if (parent
&& !is_desktop_window(parent
))
1756 /* an owned window must be created as top-level */
1757 set_error( STATUS_ACCESS_DENIED
);
1760 else /* owner must be a top-level window */
1761 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1764 get_req_unicode_str( &cls_name
);
1765 atom
= cls_name
.len
? find_global_atom( NULL
, &cls_name
) : req
->atom
;
1767 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1769 reply
->handle
= win
->handle
;
1770 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1771 reply
->owner
= win
->owner
;
1772 reply
->extra
= win
->nb_extra_bytes
;
1773 reply
->class_ptr
= get_class_client_ptr( win
->class );
1777 /* set the parent of a window */
1778 DECL_HANDLER(set_parent
)
1780 struct window
*win
, *parent
= NULL
;
1782 if (!(win
= get_window( req
->handle
))) return;
1783 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1785 if (is_desktop_window(win
))
1787 set_error( STATUS_INVALID_PARAMETER
);
1790 reply
->old_parent
= win
->parent
->handle
;
1791 reply
->full_parent
= parent
? parent
->handle
: 0;
1792 set_parent_window( win
, parent
);
1796 /* destroy a window */
1797 DECL_HANDLER(destroy_window
)
1799 struct window
*win
= get_window( req
->handle
);
1802 if (!is_desktop_window(win
)) destroy_window( win
);
1803 else if (win
->thread
== current
) detach_window_thread( win
);
1804 else set_error( STATUS_ACCESS_DENIED
);
1809 /* retrieve the desktop window for the current thread */
1810 DECL_HANDLER(get_desktop_window
)
1812 struct desktop
*desktop
= get_thread_desktop( current
, 0 );
1814 if (!desktop
) return;
1816 if (!desktop
->top_window
&& req
->force
) /* create it */
1818 if ((desktop
->top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
1820 detach_window_thread( desktop
->top_window
);
1821 desktop
->top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1825 if (!desktop
->msg_window
&& req
->force
) /* create it */
1827 static const WCHAR messageW
[] = {'M','e','s','s','a','g','e'};
1828 static const struct unicode_str name
= { messageW
, sizeof(messageW
) };
1829 atom_t atom
= add_global_atom( NULL
, &name
);
1830 if (atom
&& (desktop
->msg_window
= create_window( NULL
, NULL
, atom
, 0 )))
1832 detach_window_thread( desktop
->msg_window
);
1833 desktop
->msg_window
->style
= WS_POPUP
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1837 reply
->top_window
= desktop
->top_window
? desktop
->top_window
->handle
: 0;
1838 reply
->msg_window
= desktop
->msg_window
? desktop
->msg_window
->handle
: 0;
1839 release_object( desktop
);
1843 /* set a window owner */
1844 DECL_HANDLER(set_window_owner
)
1846 struct window
*win
= get_window( req
->handle
);
1847 struct window
*owner
= NULL
, *ptr
;
1850 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1851 if (is_desktop_window(win
))
1853 set_error( STATUS_ACCESS_DENIED
);
1857 /* make sure owner is not a successor of window */
1858 for (ptr
= owner
; ptr
; ptr
= ptr
->owner
? get_window( ptr
->owner
) : NULL
)
1862 set_error( STATUS_INVALID_PARAMETER
);
1867 reply
->prev_owner
= win
->owner
;
1868 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1872 /* get information from a window handle */
1873 DECL_HANDLER(get_window_info
)
1875 struct window
*win
= get_window( req
->handle
);
1877 reply
->full_handle
= 0;
1878 reply
->tid
= reply
->pid
= 0;
1881 reply
->full_handle
= win
->handle
;
1882 reply
->last_active
= win
->handle
;
1883 reply
->is_unicode
= win
->is_unicode
;
1884 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1887 reply
->tid
= get_thread_id( win
->thread
);
1888 reply
->pid
= get_process_id( win
->thread
->process
);
1889 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
1895 /* set some information in a window */
1896 DECL_HANDLER(set_window_info
)
1898 struct window
*win
= get_window( req
->handle
);
1901 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
1903 set_error( STATUS_ACCESS_DENIED
);
1906 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1907 req
->extra_offset
< -1 ||
1908 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1910 set_win32_error( ERROR_INVALID_INDEX
);
1913 if (req
->extra_offset
!= -1)
1915 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1917 else if (req
->flags
& SET_WIN_EXTRA
)
1919 set_win32_error( ERROR_INVALID_INDEX
);
1922 reply
->old_style
= win
->style
;
1923 reply
->old_ex_style
= win
->ex_style
;
1924 reply
->old_id
= win
->id
;
1925 reply
->old_instance
= win
->instance
;
1926 reply
->old_user_data
= win
->user_data
;
1927 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1928 if (req
->flags
& SET_WIN_EXSTYLE
)
1930 /* WS_EX_TOPMOST can only be changed for unlinked windows */
1931 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
1932 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
1933 if (!(win
->ex_style
& WS_EX_LAYERED
)) win
->is_layered
= 0;
1935 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1936 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1937 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
1938 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1939 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1940 &req
->extra_value
, req
->extra_size
);
1942 /* changing window style triggers a non-client paint */
1943 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1947 /* get a list of the window parents, up to the root of the tree */
1948 DECL_HANDLER(get_window_parents
)
1950 struct window
*ptr
, *win
= get_window( req
->handle
);
1952 user_handle_t
*data
;
1955 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1957 reply
->count
= total
;
1958 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1959 if (len
&& ((data
= set_reply_data_size( len
))))
1961 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1962 *data
++ = ptr
->handle
;
1967 /* get a list of the window children */
1968 DECL_HANDLER(get_window_children
)
1970 struct window
*parent
= NULL
;
1972 user_handle_t
*data
;
1974 struct unicode_str cls_name
;
1975 atom_t atom
= req
->atom
;
1976 struct desktop
*desktop
= NULL
;
1978 get_req_unicode_str( &cls_name
);
1979 if (cls_name
.len
&& !(atom
= find_global_atom( NULL
, &cls_name
))) return;
1983 if (!(desktop
= get_desktop_obj( current
->process
, req
->desktop
, DESKTOP_ENUMERATE
))) return;
1984 parent
= desktop
->top_window
;
1988 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1989 if (!parent
&& !(desktop
= get_thread_desktop( current
, 0 ))) return;
1993 total
= get_children_windows( parent
, atom
, req
->tid
, NULL
, 0 );
1995 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
, NULL
, 0 ) +
1996 get_children_windows( desktop
->msg_window
, atom
, req
->tid
, NULL
, 0 );
1998 reply
->count
= total
;
1999 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
2000 if (len
&& ((data
= set_reply_data_size( len
))))
2002 if (parent
) get_children_windows( parent
, atom
, req
->tid
, data
, len
/ sizeof(user_handle_t
) );
2005 total
= get_children_windows( desktop
->top_window
, atom
, req
->tid
,
2006 data
, len
/ sizeof(user_handle_t
) );
2008 len
-= total
* sizeof(user_handle_t
);
2009 if (len
>= sizeof(user_handle_t
))
2010 get_children_windows( desktop
->msg_window
, atom
, req
->tid
,
2011 data
, len
/ sizeof(user_handle_t
) );
2014 if (desktop
) release_object( desktop
);
2018 /* get a list of the window children that contain a given point */
2019 DECL_HANDLER(get_window_children_from_point
)
2021 struct user_handle_array array
;
2022 struct window
*parent
= get_window( req
->parent
);
2025 if (!parent
) return;
2027 array
.handles
= NULL
;
2030 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
2032 reply
->count
= array
.count
;
2033 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
2034 if (len
) set_reply_data_ptr( array
.handles
, len
);
2035 else free( array
.handles
);
2039 /* get window tree information from a window handle */
2040 DECL_HANDLER(get_window_tree
)
2042 struct window
*ptr
, *win
= get_window( req
->handle
);
2048 reply
->next_sibling
= 0;
2049 reply
->prev_sibling
= 0;
2050 reply
->first_sibling
= 0;
2051 reply
->last_sibling
= 0;
2052 reply
->first_child
= 0;
2053 reply
->last_child
= 0;
2057 struct window
*parent
= win
->parent
;
2058 reply
->parent
= parent
->handle
;
2059 reply
->owner
= win
->owner
;
2062 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
2063 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
2065 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
2066 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
2068 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
2069 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
2073 /* set the position and Z order of a window */
2074 DECL_HANDLER(set_window_pos
)
2076 rectangle_t window_rect
, client_rect
, visible_rect
;
2077 struct window
*previous
= NULL
;
2078 struct window
*win
= get_window( req
->handle
);
2079 unsigned int flags
= req
->flags
;
2082 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
2084 if (!(flags
& SWP_NOZORDER
))
2086 switch ((int)req
->previous
)
2088 case 0: /* HWND_TOP */
2089 previous
= WINPTR_TOP
;
2091 case 1: /* HWND_BOTTOM */
2092 previous
= WINPTR_BOTTOM
;
2094 case -1: /* HWND_TOPMOST */
2095 previous
= WINPTR_TOPMOST
;
2097 case -2: /* HWND_NOTOPMOST */
2098 previous
= WINPTR_NOTOPMOST
;
2101 if (!(previous
= get_window( req
->previous
))) return;
2102 /* previous must be a sibling */
2103 if (previous
->parent
!= win
->parent
)
2105 set_error( STATUS_INVALID_PARAMETER
);
2110 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
2113 /* window rectangle must be ordered properly */
2114 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
2116 set_error( STATUS_INVALID_PARAMETER
);
2120 window_rect
= visible_rect
= req
->window
;
2121 client_rect
= req
->client
;
2122 if (get_req_data_size() >= sizeof(rectangle_t
))
2123 memcpy( &visible_rect
, get_req_data(), sizeof(rectangle_t
) );
2124 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2126 mirror_rect( &win
->parent
->client_rect
, &window_rect
);
2127 mirror_rect( &win
->parent
->client_rect
, &visible_rect
);
2128 mirror_rect( &win
->parent
->client_rect
, &client_rect
);
2131 if (get_req_data_size() >= 3 * sizeof(rectangle_t
))
2133 rectangle_t valid_rects
[2];
2134 memcpy( valid_rects
, (const rectangle_t
*)get_req_data() + 1, 2 * sizeof(rectangle_t
) );
2135 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2137 mirror_rect( &win
->client_rect
, &valid_rects
[0] );
2138 mirror_rect( &win
->client_rect
, &valid_rects
[1] );
2140 set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, valid_rects
);
2142 else set_window_pos( win
, previous
, flags
, &window_rect
, &client_rect
, &visible_rect
, NULL
);
2144 reply
->new_style
= win
->style
;
2145 reply
->new_ex_style
= win
->ex_style
;
2149 /* get the window and client rectangles of a window */
2150 DECL_HANDLER(get_window_rectangles
)
2152 struct window
*win
= get_window( req
->handle
);
2156 reply
->window
= win
->window_rect
;
2157 reply
->visible
= win
->visible_rect
;
2158 reply
->client
= win
->client_rect
;
2160 switch (req
->relative
)
2163 offset_rect( &reply
->window
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2164 offset_rect( &reply
->visible
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2165 offset_rect( &reply
->client
, -win
->client_rect
.left
, -win
->client_rect
.top
);
2166 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2168 mirror_rect( &win
->client_rect
, &reply
->window
);
2169 mirror_rect( &win
->client_rect
, &reply
->visible
);
2173 offset_rect( &reply
->window
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2174 offset_rect( &reply
->visible
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2175 offset_rect( &reply
->client
, -win
->window_rect
.left
, -win
->window_rect
.top
);
2176 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2178 mirror_rect( &win
->window_rect
, &reply
->visible
);
2179 mirror_rect( &win
->window_rect
, &reply
->client
);
2183 if (win
->parent
&& win
->parent
->ex_style
& WS_EX_LAYOUTRTL
)
2185 mirror_rect( &win
->parent
->client_rect
, &reply
->window
);
2186 mirror_rect( &win
->parent
->client_rect
, &reply
->visible
);
2187 mirror_rect( &win
->parent
->client_rect
, &reply
->client
);
2191 client_to_screen_rect( win
->parent
, &reply
->window
);
2192 client_to_screen_rect( win
->parent
, &reply
->visible
);
2193 client_to_screen_rect( win
->parent
, &reply
->client
);
2196 set_error( STATUS_INVALID_PARAMETER
);
2202 /* get the window text */
2203 DECL_HANDLER(get_window_text
)
2205 struct window
*win
= get_window( req
->handle
);
2207 if (win
&& win
->text
)
2209 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
2210 if (len
> get_reply_max_size()) len
= get_reply_max_size();
2211 set_reply_data( win
->text
, len
);
2216 /* set the window text */
2217 DECL_HANDLER(set_window_text
)
2219 struct window
*win
= get_window( req
->handle
);
2224 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
2227 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
2228 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
2237 /* get the coordinates offset between two windows */
2238 DECL_HANDLER(get_windows_offset
)
2241 int mirror_from
= 0, mirror_to
= 0;
2243 reply
->x
= reply
->y
= 0;
2246 if (!(win
= get_window( req
->from
))) return;
2247 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2250 reply
->x
+= win
->client_rect
.right
- win
->client_rect
.left
- 1;
2252 while (win
&& !is_desktop_window(win
))
2254 reply
->x
+= win
->client_rect
.left
;
2255 reply
->y
+= win
->client_rect
.top
;
2261 if (!(win
= get_window( req
->to
))) return;
2262 if (win
->ex_style
& WS_EX_LAYOUTRTL
)
2265 reply
->x
-= win
->client_rect
.right
- win
->client_rect
.left
- 1;
2267 while (win
&& !is_desktop_window(win
))
2269 reply
->x
-= win
->client_rect
.left
;
2270 reply
->y
-= win
->client_rect
.top
;
2274 if (mirror_from
) reply
->x
= -reply
->x
;
2275 reply
->mirror
= mirror_from
^ mirror_to
;
2279 /* get the visible region of a window */
2280 DECL_HANDLER(get_visible_region
)
2282 struct region
*region
;
2283 struct window
*top
, *win
= get_window( req
->window
);
2287 top
= get_top_clipping_window( win
);
2288 if ((region
= get_visible_region( win
, req
->flags
)))
2291 map_win_region_to_screen( win
, region
);
2292 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2293 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2295 reply
->top_win
= top
->handle
;
2296 reply
->top_rect
= (top
== win
&& (req
->flags
& DCX_WINDOW
)) ? top
->visible_rect
: top
->client_rect
;
2298 if (!is_desktop_window(win
))
2300 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2301 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2302 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2306 reply
->win_rect
.left
= 0;
2307 reply
->win_rect
.top
= 0;
2308 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2309 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2314 /* get the window region */
2315 DECL_HANDLER(get_window_region
)
2317 struct window
*win
= get_window( req
->window
);
2321 if (win
->win_region
)
2323 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2324 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2329 /* set the window region */
2330 DECL_HANDLER(set_window_region
)
2332 struct region
*region
= NULL
;
2333 struct window
*win
= get_window( req
->window
);
2337 if (get_req_data_size()) /* no data means remove the region completely */
2339 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2342 set_window_region( win
, region
, req
->redraw
);
2346 /* get a window update region */
2347 DECL_HANDLER(get_update_region
)
2350 unsigned int flags
= req
->flags
;
2351 struct window
*from_child
= NULL
;
2352 struct window
*win
= get_window( req
->window
);
2357 if (req
->from_child
)
2361 if (!(from_child
= get_window( req
->from_child
))) return;
2363 /* make sure from_child is a child of win */
2365 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2368 set_error( STATUS_INVALID_PARAMETER
);
2373 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2375 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2376 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2379 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2380 reply
->child
= win
->handle
;
2382 if (flags
& UPDATE_NOREGION
) return;
2384 if (win
->update_region
)
2386 /* convert update region to screen coordinates */
2387 struct region
*region
= create_empty_region();
2389 if (!region
) return;
2390 if (!copy_region( region
, win
->update_region
))
2392 free_region( region
);
2395 map_win_region_to_screen( win
, region
);
2396 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2397 &reply
->total_size
))) return;
2398 set_reply_data_ptr( data
, reply
->total_size
);
2401 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2403 validate_parents( win
);
2404 validate_whole_window( win
);
2408 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2409 if (reply
->flags
& UPDATE_ERASE
)
2411 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2412 /* desktop window only gets erased, not repainted */
2413 if (is_desktop_window(win
)) validate_whole_window( win
);
2419 /* update the z order of a window so that a given rectangle is fully visible */
2420 DECL_HANDLER(update_window_zorder
)
2423 struct window
*ptr
, *win
= get_window( req
->window
);
2425 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2427 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2429 if (ptr
== win
) break;
2430 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2431 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2432 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
2433 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
2434 /* found a window obscuring the rectangle, now move win above this one */
2435 /* making sure to not violate the topmost rule */
2436 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2438 list_remove( &win
->entry
);
2439 list_add_before( &ptr
->entry
, &win
->entry
);
2446 /* mark parts of a window as needing a redraw */
2447 DECL_HANDLER(redraw_window
)
2449 struct region
*region
= NULL
;
2450 struct window
*win
= get_window( req
->window
);
2453 if (!is_visible( win
)) return; /* nothing to do */
2455 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2457 if (get_req_data_size()) /* no data means whole rectangle */
2459 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2464 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2466 if (region
) free_region( region
);
2470 /* set a window property */
2471 DECL_HANDLER(set_window_property
)
2473 struct unicode_str name
;
2474 struct window
*win
= get_window( req
->window
);
2478 get_req_unicode_str( &name
);
2481 atom_t atom
= add_global_atom( NULL
, &name
);
2484 set_property( win
, atom
, req
->data
, PROP_TYPE_STRING
);
2485 release_global_atom( NULL
, atom
);
2488 else set_property( win
, req
->atom
, req
->data
, PROP_TYPE_ATOM
);
2492 /* remove a window property */
2493 DECL_HANDLER(remove_window_property
)
2495 struct unicode_str name
;
2496 struct window
*win
= get_window( req
->window
);
2498 get_req_unicode_str( &name
);
2501 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2502 if (atom
) reply
->data
= remove_property( win
, atom
);
2507 /* get a window property */
2508 DECL_HANDLER(get_window_property
)
2510 struct unicode_str name
;
2511 struct window
*win
= get_window( req
->window
);
2513 get_req_unicode_str( &name
);
2516 atom_t atom
= name
.len
? find_global_atom( NULL
, &name
) : req
->atom
;
2517 if (atom
) reply
->data
= get_property( win
, atom
);
2522 /* get the list of properties of a window */
2523 DECL_HANDLER(get_window_properties
)
2525 property_data_t
*data
;
2526 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2527 struct window
*win
= get_window( req
->window
);
2532 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2533 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2534 reply
->total
= count
;
2536 if (count
> max
) count
= max
;
2537 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2539 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2541 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2542 data
->atom
= win
->properties
[i
].atom
;
2543 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2544 data
->data
= win
->properties
[i
].data
;
2551 /* get the new window pointer for a global window, checking permissions */
2552 /* helper for set_global_windows request */
2553 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2562 set_error( STATUS_ACCESS_DENIED
);
2565 *win
= get_window( handle
);
2566 return (*win
!= NULL
);
2569 /* Set/get the global windows */
2570 DECL_HANDLER(set_global_windows
)
2572 struct window
*new_shell_window
= shell_window
;
2573 struct window
*new_shell_listview
= shell_listview
;
2574 struct window
*new_progman_window
= progman_window
;
2575 struct window
*new_taskman_window
= taskman_window
;
2577 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2578 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2579 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2580 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2582 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2584 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2585 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2587 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2589 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2591 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2593 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2595 shell_window
= new_shell_window
;
2596 shell_listview
= new_shell_listview
;
2597 progman_window
= new_progman_window
;
2598 taskman_window
= new_taskman_window
;
2601 /* retrieve layered info for a window */
2602 DECL_HANDLER(get_window_layered_info
)
2604 struct window
*win
= get_window( req
->handle
);
2608 if (win
->is_layered
)
2610 reply
->color_key
= win
->color_key
;
2611 reply
->alpha
= win
->alpha
;
2612 reply
->flags
= win
->layered_flags
;
2614 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
2618 /* set layered info for a window */
2619 DECL_HANDLER(set_window_layered_info
)
2621 struct window
*win
= get_window( req
->handle
);
2625 if (win
->ex_style
& WS_EX_LAYERED
)
2627 if (req
->flags
& LWA_ALPHA
) win
->alpha
= req
->alpha
;
2628 else if (!win
->is_layered
) win
->alpha
= 0; /* alpha init value is 0 */
2630 win
->color_key
= req
->color_key
;
2631 win
->layered_flags
= req
->flags
;
2632 win
->is_layered
= 1;
2634 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);