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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
39 /* a window property */
42 unsigned short type
; /* property type (see below) */
43 atom_t atom
; /* property atom */
44 obj_handle_t handle
; /* property handle (user-defined storage) */
49 PROP_TYPE_FREE
, /* free entry */
50 PROP_TYPE_STRING
, /* atom that was originally a string */
51 PROP_TYPE_ATOM
/* plain atom */
57 struct window
*parent
; /* parent window */
58 user_handle_t owner
; /* owner of this window */
59 struct list children
; /* list of children in Z-order */
60 struct list unlinked
; /* list of children not linked in the Z-order list */
61 struct list entry
; /* entry in parent's children list */
62 user_handle_t handle
; /* full handle for this window */
63 struct thread
*thread
; /* thread owning the window */
64 struct window_class
*class; /* window class */
65 atom_t atom
; /* class atom */
66 user_handle_t last_active
; /* last active popup */
67 rectangle_t window_rect
; /* window rectangle (relative to parent client area) */
68 rectangle_t visible_rect
; /* visible part of window rect (relative to parent client area) */
69 rectangle_t client_rect
; /* client rectangle (relative to parent client area) */
70 struct region
*win_region
; /* region for shaped windows (relative to window rect) */
71 struct region
*update_region
; /* update region (relative to window rect) */
72 unsigned int style
; /* window style */
73 unsigned int ex_style
; /* window extended style */
74 unsigned int id
; /* window id */
75 void* instance
; /* creator instance */
76 void* user_data
; /* user-specific data */
77 WCHAR
*text
; /* window caption text */
78 unsigned int paint_flags
; /* various painting flags */
79 int prop_inuse
; /* number of in-use window properties */
80 int prop_alloc
; /* number of allocated window properties */
81 struct property
*properties
; /* window properties array */
82 int nb_extra_bytes
; /* number of extra bytes */
83 char extra_bytes
[1]; /* extra bytes storage */
86 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
87 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
88 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
90 /* growable array of user handles */
91 struct user_handle_array
93 user_handle_t
*handles
;
98 static struct window
*top_window
; /* top-level (desktop) window */
100 /* global window pointers */
101 static struct window
*shell_window
;
102 static struct window
*shell_listview
;
103 static struct window
*progman_window
;
104 static struct window
*taskman_window
;
106 /* retrieve a pointer to a window from its handle */
107 inline static struct window
*get_window( user_handle_t handle
)
109 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
110 if (!ret
) set_error( STATUS_INVALID_HANDLE
);
114 /* change the parent of a window (or unlink the window if the new parent is NULL) */
115 static int set_parent_window( struct window
*win
, struct window
*parent
)
119 /* make sure parent is not a child of window */
120 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
124 set_error( STATUS_INVALID_PARAMETER
);
129 list_remove( &win
->entry
); /* unlink it from the previous location */
133 win
->parent
= parent
;
134 list_add_head( &parent
->children
, &win
->entry
);
136 /* if parent belongs to a different thread, attach the two threads */
137 if (parent
->thread
&& parent
->thread
!= win
->thread
)
138 attach_thread_input( win
->thread
, parent
->thread
);
140 else /* move it to parent unlinked list */
142 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
147 /* get next window in Z-order list */
148 static inline struct window
*get_next_window( struct window
*win
)
150 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
151 if (ptr
== &win
->parent
->unlinked
) ptr
= NULL
;
152 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
155 /* get previous window in Z-order list */
156 static inline struct window
*get_prev_window( struct window
*win
)
158 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
159 if (ptr
== &win
->parent
->unlinked
) ptr
= NULL
;
160 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
163 /* get first child in Z-order list */
164 static inline struct window
*get_first_child( struct window
*win
)
166 struct list
*ptr
= list_head( &win
->children
);
167 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
170 /* get last child in Z-order list */
171 static inline struct window
*get_last_child( struct window
*win
)
173 struct list
*ptr
= list_tail( &win
->children
);
174 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
177 /* append a user handle to a handle array */
178 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
180 if (array
->count
>= array
->total
)
182 int new_total
= max( array
->total
* 2, 32 );
183 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
186 free( array
->handles
);
187 set_error( STATUS_NO_MEMORY
);
190 array
->handles
= new_array
;
191 array
->total
= new_total
;
193 array
->handles
[array
->count
++] = handle
;
197 /* set a window property */
198 static void set_property( struct window
*win
, atom_t atom
, obj_handle_t handle
,
199 enum property_type type
)
202 struct property
*new_props
;
204 /* check if it exists already */
205 for (i
= 0; i
< win
->prop_inuse
; i
++)
207 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
212 if (win
->properties
[i
].atom
== atom
)
214 win
->properties
[i
].type
= type
;
215 win
->properties
[i
].handle
= handle
;
220 /* need to add an entry */
221 if (!grab_global_atom( atom
)) return;
225 if (win
->prop_inuse
>= win
->prop_alloc
)
227 /* need to grow the array */
228 if (!(new_props
= realloc( win
->properties
,
229 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
231 set_error( STATUS_NO_MEMORY
);
232 release_global_atom( atom
);
235 win
->prop_alloc
+= 16;
236 win
->properties
= new_props
;
238 free
= win
->prop_inuse
++;
240 win
->properties
[free
].atom
= atom
;
241 win
->properties
[free
].type
= type
;
242 win
->properties
[free
].handle
= handle
;
245 /* remove a window property */
246 static obj_handle_t
remove_property( struct window
*win
, atom_t atom
)
250 for (i
= 0; i
< win
->prop_inuse
; i
++)
252 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
253 if (win
->properties
[i
].atom
== atom
)
255 release_global_atom( atom
);
256 win
->properties
[i
].type
= PROP_TYPE_FREE
;
257 return win
->properties
[i
].handle
;
260 /* FIXME: last error? */
264 /* find a window property */
265 static obj_handle_t
get_property( struct window
*win
, atom_t atom
)
269 for (i
= 0; i
< win
->prop_inuse
; i
++)
271 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
272 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].handle
;
274 /* FIXME: last error? */
278 /* destroy all properties of a window */
279 inline static void destroy_properties( struct window
*win
)
283 if (!win
->properties
) return;
284 for (i
= 0; i
< win
->prop_inuse
; i
++)
286 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
287 release_global_atom( win
->properties
[i
].atom
);
289 free( win
->properties
);
292 /* destroy a window */
293 static void destroy_window( struct window
*win
)
295 assert( win
!= top_window
);
297 /* destroy all children */
298 while (!list_empty(&win
->children
))
299 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
300 while (!list_empty(&win
->unlinked
))
301 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
303 if (win
->thread
->queue
)
305 if (win
->update_region
) inc_queue_paint_count( win
->thread
, -1 );
306 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( win
->thread
, -1 );
307 queue_cleanup_window( win
->thread
, win
->handle
);
309 /* reset global window pointers, if the corresponding window is destroyed */
310 if (win
== shell_window
) shell_window
= NULL
;
311 if (win
== shell_listview
) shell_listview
= NULL
;
312 if (win
== progman_window
) progman_window
= NULL
;
313 if (win
== taskman_window
) taskman_window
= NULL
;
314 free_user_handle( win
->handle
);
315 destroy_properties( win
);
316 list_remove( &win
->entry
);
317 if (win
->win_region
) free_region( win
->win_region
);
318 if (win
->update_region
) free_region( win
->update_region
);
319 release_class( win
->class );
320 if (win
->text
) free( win
->text
);
321 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
325 /* create a new window structure (note: the window is not linked in the window tree) */
326 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
327 atom_t atom
, void *instance
)
331 struct window_class
*class = grab_class( current
->process
, atom
, instance
, &extra_bytes
);
333 if (!class) return NULL
;
335 win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 );
338 release_class( class );
342 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
)))
344 release_class( class );
348 win
->parent
= parent
;
349 win
->owner
= owner
? owner
->handle
: 0;
350 win
->thread
= current
;
353 win
->last_active
= win
->handle
;
354 win
->win_region
= NULL
;
355 win
->update_region
= NULL
;
359 win
->instance
= NULL
;
360 win
->user_data
= NULL
;
362 win
->paint_flags
= 0;
365 win
->properties
= NULL
;
366 win
->nb_extra_bytes
= extra_bytes
;
367 memset( win
->extra_bytes
, 0, extra_bytes
);
368 list_init( &win
->children
);
369 list_init( &win
->unlinked
);
371 /* put it on parent unlinked list */
372 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
374 /* if parent belongs to a different thread, attach the two threads */
375 if (parent
&& parent
->thread
&& parent
->thread
!= current
)
376 attach_thread_input( current
, parent
->thread
);
380 /* destroy all windows belonging to a given thread */
381 void destroy_thread_windows( struct thread
*thread
)
383 user_handle_t handle
= 0;
386 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
388 if (win
->thread
!= thread
) continue;
389 destroy_window( win
);
393 /* check whether child is a descendant of parent */
394 int is_child_window( user_handle_t parent
, user_handle_t child
)
396 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
397 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
399 if (!child_ptr
|| !parent_ptr
) return 0;
400 while (child_ptr
->parent
)
402 if (child_ptr
->parent
== parent_ptr
) return 1;
403 child_ptr
= child_ptr
->parent
;
408 /* check whether window is a top-level window */
409 int is_top_level_window( user_handle_t window
)
411 struct window
*win
= get_user_object( window
, USER_WINDOW
);
412 return (win
&& win
->parent
== top_window
);
415 /* make a window active if possible */
416 int make_window_active( user_handle_t window
)
418 struct window
*owner
, *win
= get_window( window
);
422 /* set last active for window and its owner */
423 win
->last_active
= win
->handle
;
424 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
428 /* increment (or decrement) the window paint count */
429 static inline void inc_window_paint_count( struct window
*win
, int incr
)
431 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
434 /* check if window and all its ancestors are visible */
435 static int is_visible( const struct window
*win
)
437 while (win
&& win
!= top_window
)
439 if (!(win
->style
& WS_VISIBLE
)) return 0;
441 /* if parent is minimized children are not visible */
442 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
447 /* same as is_visible but takes a window handle */
448 int is_window_visible( user_handle_t window
)
450 struct window
*win
= get_user_object( window
, USER_WINDOW
);
452 return is_visible( win
);
455 /* check if point is inside the window */
456 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
458 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
459 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
460 return 0; /* disabled child */
461 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
462 return 0; /* transparent */
463 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
464 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
465 return 0; /* not in window */
466 if (win
->win_region
&&
467 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
468 return 0; /* not in window region */
472 /* find child of 'parent' that contains the given point (in parent-relative coords) */
473 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
477 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
479 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
481 /* if window is minimized or disabled, return at once */
482 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
484 /* if point is not in client area, return at once */
485 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
486 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
489 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
491 return parent
; /* not found any child */
494 /* find all children of 'parent' that contain the given point */
495 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
496 struct user_handle_array
*array
)
500 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
502 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
504 /* if point is in client area, and window is not minimized or disabled, check children */
505 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
506 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
507 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
509 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
510 y
- ptr
->client_rect
.top
, array
))
514 /* now add window to the array */
515 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
520 /* find window containing point (in absolute coords) */
521 user_handle_t
window_from_point( int x
, int y
)
525 if (!top_window
) return 0;
526 ret
= child_window_from_point( top_window
, x
, y
);
530 /* return list of all windows containing point (in absolute coords) */
531 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
535 /* make point relative to top window */
536 for (ptr
= top
->parent
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
538 x
-= ptr
->client_rect
.left
;
539 y
-= ptr
->client_rect
.top
;
542 if (!is_point_in_window( top
, x
, y
)) return 1;
544 /* if point is in client area, and window is not minimized or disabled, check children */
545 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
546 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
547 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
549 if (!get_window_children_from_point( top
, x
- top
->client_rect
.left
,
550 y
- top
->client_rect
.top
, array
))
553 /* now add window to the array */
554 if (!add_handle_to_array( array
, top
->handle
)) return 0;
559 /* return the thread owning a window */
560 struct thread
*get_window_thread( user_handle_t handle
)
562 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
563 if (!win
|| !win
->thread
) return NULL
;
564 return (struct thread
*)grab_object( win
->thread
);
568 /* check if any area of a window needs repainting */
569 static inline int win_needs_repaint( struct window
*win
)
571 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
575 /* find a child of the specified window that needs repainting */
576 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
578 struct window
*ptr
, *ret
= NULL
;
580 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
582 if (!(ptr
->style
& WS_VISIBLE
)) continue;
583 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
585 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
586 ret
= find_child_to_repaint( ptr
, thread
);
590 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
592 /* transparent window, check for non-transparent sibling to paint first */
593 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
595 if (!(ptr
->style
& WS_VISIBLE
)) continue;
596 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
597 if (ptr
->thread
!= thread
) continue;
598 if (win_needs_repaint( ptr
)) return ptr
;
605 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
606 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
608 struct window
*ptr
, *win
= find_child_to_repaint( top_window
, thread
);
612 /* check that it is a child of the specified parent */
613 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
614 if (ptr
->handle
== parent
) break;
615 /* otherwise don't return any window, we don't repaint a child before its parent */
616 if (!ptr
) win
= NULL
;
619 win
->paint_flags
&= ~PAINT_INTERNAL
;
624 /* intersect the window region with the specified region, relative to the window parent */
625 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
627 /* make region relative to window rect */
628 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
629 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
630 /* make region relative to parent again */
631 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
636 /* clip all children of a given window out of the visible region */
637 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
638 struct region
*region
, int offset_x
, int offset_y
)
641 struct region
*tmp
= create_empty_region();
643 if (!tmp
) return NULL
;
644 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
646 if (ptr
== last
) break;
647 if (!(ptr
->style
& WS_VISIBLE
)) continue;
648 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
649 set_region_rect( tmp
, &ptr
->visible_rect
);
650 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
655 offset_region( tmp
, offset_x
, offset_y
);
656 if (!(region
= subtract_region( region
, region
, tmp
))) break;
657 if (is_region_empty( region
)) break;
664 /* compute the intersection of two rectangles; return 0 if the result is empty */
665 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
667 dst
->left
= max( src1
->left
, src2
->left
);
668 dst
->top
= max( src1
->top
, src2
->top
);
669 dst
->right
= min( src1
->right
, src2
->right
);
670 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
671 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
675 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
676 static void set_region_client_rect( struct region
*region
, struct window
*win
)
680 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
681 set_region_rect( region
, &rect
);
685 /* get the top-level window to clip against for a given window */
686 static inline struct window
*get_top_clipping_window( struct window
*win
)
688 while (win
->parent
&& win
->parent
!= top_window
) win
= win
->parent
;
693 /* compute the visible region of a window */
694 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
696 struct region
*tmp
, *region
;
697 int offset_x
, offset_y
;
698 struct window
*top
= get_top_clipping_window( win
);
700 if (!(region
= create_empty_region())) return NULL
;
702 /* first check if all ancestors are visible */
704 if (!is_visible( win
)) return region
; /* empty region */
706 /* create a region relative to the window itself */
708 if ((flags
& DCX_PARENTCLIP
) && win
!= top
&& win
->parent
)
710 set_region_client_rect( region
, win
->parent
);
711 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
712 offset_x
= win
->client_rect
.left
;
713 offset_y
= win
->client_rect
.top
;
715 else if (flags
& DCX_WINDOW
)
717 set_region_rect( region
, &win
->visible_rect
);
718 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
719 offset_x
= win
->window_rect
.left
;
720 offset_y
= win
->window_rect
.top
;
724 set_region_client_rect( region
, win
);
725 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
726 offset_x
= win
->client_rect
.left
;
727 offset_y
= win
->client_rect
.top
;
729 offset_region( region
, -offset_x
, -offset_y
);
733 if (flags
& DCX_CLIPCHILDREN
)
735 if (!clip_children( win
, NULL
, region
,
736 offset_x
- win
->client_rect
.left
,
737 offset_y
- win
->client_rect
.top
)) goto error
;
740 /* clip siblings of ancestors */
742 if (top
&& top
!= win
&& (tmp
= create_empty_region()) != NULL
)
744 offset_region( region
, offset_x
, offset_y
); /* make it relative to parent */
745 while (win
!= top
&& win
->parent
)
747 if (win
->style
& WS_CLIPSIBLINGS
)
749 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
750 if (is_region_empty( region
)) break;
752 /* clip to parent client area */
754 offset_x
+= win
->client_rect
.left
;
755 offset_y
+= win
->client_rect
.top
;
756 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
757 set_region_client_rect( tmp
, win
);
758 if (win
->win_region
&& !intersect_window_region( tmp
, win
))
763 if (!intersect_region( region
, region
, tmp
))
768 if (is_region_empty( region
)) break;
770 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window again */
776 free_region( region
);
781 /* get the window class of a window */
782 struct window_class
* get_window_class( user_handle_t window
)
785 if (!(win
= get_window( window
))) return NULL
;
789 /* return a copy of the specified region cropped to the window client or frame rectangle, */
790 /* and converted from client to window coordinates. Helper for (in)validate_window. */
791 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
793 struct region
*tmp
= create_empty_region();
795 if (!tmp
) return NULL
;
797 /* get bounding rect in client coords */
798 if (frame
) set_region_rect( tmp
, &win
->window_rect
);
799 else set_region_client_rect( tmp
, win
);
800 offset_region( tmp
, -win
->client_rect
.left
, -win
->client_rect
.top
);
802 /* intersect specified region with bounding rect */
803 if (region
&& !intersect_region( tmp
, region
, tmp
)) goto done
;
804 if (is_region_empty( tmp
)) goto done
;
806 /* map it to window coords */
807 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
808 win
->client_rect
.top
- win
->window_rect
.top
);
817 /* set a region as new update region for the window */
818 static void set_update_region( struct window
*win
, struct region
*region
)
820 if (region
&& !is_region_empty( region
))
822 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
823 else free_region( win
->update_region
);
824 win
->update_region
= region
;
828 if (win
->update_region
) inc_window_paint_count( win
, -1 );
829 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_NONCLIENT
);
830 win
->update_region
= NULL
;
831 if (region
) free_region( region
);
836 /* add a region to the update region; the passed region is freed or reused */
837 static int add_update_region( struct window
*win
, struct region
*region
)
839 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
841 free_region( region
);
844 set_update_region( win
, region
);
849 /* validate the non client area of a window */
850 static void validate_non_client( struct window
*win
)
855 if (!win
->update_region
) return; /* nothing to do */
857 /* get client rect in window coords */
858 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
859 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
860 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
861 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
863 if ((tmp
= create_empty_region()))
865 set_region_rect( tmp
, &rect
);
866 if (intersect_region( tmp
, win
->update_region
, tmp
))
867 set_update_region( win
, tmp
);
871 win
->paint_flags
&= ~PAINT_NONCLIENT
;
875 /* validate a window completely so that we don't get any further paint messages for it */
876 static void validate_whole_window( struct window
*win
)
878 set_update_region( win
, NULL
);
880 if (win
->paint_flags
& PAINT_INTERNAL
)
882 win
->paint_flags
&= ~PAINT_INTERNAL
;
883 inc_window_paint_count( win
, -1 );
888 /* validate the update region of a window on all parents; helper for redraw_window */
889 static void validate_parents( struct window
*child
)
891 int offset_x
= 0, offset_y
= 0;
892 struct window
*win
= child
;
893 struct region
*tmp
= NULL
;
895 if (!child
->update_region
) return;
897 while (win
->parent
&& win
->parent
!= top_window
)
899 /* map to parent client coords */
900 offset_x
+= win
->window_rect
.left
;
901 offset_y
+= win
->window_rect
.top
;
905 /* and now map to window coords */
906 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
907 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
909 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
911 if (!tmp
&& !(tmp
= create_empty_region())) return;
912 offset_region( child
->update_region
, offset_x
, offset_y
);
913 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
915 set_update_region( win
, tmp
);
918 /* restore child coords */
919 offset_region( child
->update_region
, -offset_x
, -offset_y
);
922 if (tmp
) free_region( tmp
);
926 /* add/subtract a region (in client coordinates) to the update region of the window */
927 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
930 struct window
*child
;
932 if (flags
& RDW_INVALIDATE
)
934 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
936 if (!add_update_region( win
, tmp
)) return;
938 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
939 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
941 else if (flags
& RDW_VALIDATE
)
943 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
945 set_update_region( win
, NULL
);
947 else if (win
->update_region
)
949 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
951 if (!subtract_region( tmp
, win
->update_region
, tmp
))
956 set_update_region( win
, tmp
);
958 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
959 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~PAINT_ERASE
;
963 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
965 win
->paint_flags
|= PAINT_INTERNAL
;
966 inc_window_paint_count( win
, 1 );
968 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
970 win
->paint_flags
&= ~PAINT_INTERNAL
;
971 inc_window_paint_count( win
, -1 );
974 if (flags
& RDW_UPDATENOW
)
976 validate_parents( win
);
977 flags
&= ~RDW_UPDATENOW
;
980 /* now process children recursively */
982 if (flags
& RDW_NOCHILDREN
) return;
983 if (win
->style
& WS_MINIMIZE
) return;
984 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
986 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
988 /* map to client coordinates */
989 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
990 win
->window_rect
.top
- win
->client_rect
.top
);
992 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
994 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
996 if (!(child
->style
& WS_VISIBLE
)) continue;
997 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
998 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
999 redraw_window( child
, tmp
, 1, flags
);
1000 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1006 /* retrieve the update flags for a window depending on the state of the update region */
1007 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1009 unsigned int ret
= 0;
1011 if (flags
& UPDATE_NONCLIENT
)
1013 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1015 if (flags
& UPDATE_ERASE
)
1017 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1019 if (flags
& UPDATE_PAINT
)
1021 if (win
->update_region
) ret
|= UPDATE_PAINT
;
1023 if (flags
& UPDATE_INTERNALPAINT
)
1025 if (win
->paint_flags
& PAINT_INTERNAL
) ret
|= UPDATE_INTERNALPAINT
;
1031 /* iterate through the children of the given window until we find one with some update flags */
1032 static unsigned int get_child_update_flags( struct window
*win
, unsigned int flags
,
1033 struct window
**child
)
1036 unsigned int ret
= 0;
1038 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1040 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1041 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1046 if (ptr
->style
& WS_MINIMIZE
) continue;
1048 /* Note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1049 * here we only want to repaint children of windows that clip them, others
1050 * need to wait for WM_PAINT to be done in the parent first.
1052 if (!(flags
& UPDATE_NOCHILDREN
) &&
1053 ((flags
& UPDATE_ALLCHILDREN
) || (ptr
->style
& WS_CLIPCHILDREN
)))
1055 if ((ret
= get_child_update_flags( ptr
, flags
, child
))) break;
1062 /* expose a region of a window, looking for the top most parent that needs to be exposed */
1063 /* the region is in window coordinates */
1064 static void expose_window( struct window
*win
, struct region
*region
)
1066 struct window
*parent
, *ptr
;
1067 int offset_x
, offset_y
;
1068 struct window
*top
= get_top_clipping_window( win
);
1070 /* find the top most parent that doesn't clip either siblings or children */
1071 for (parent
= ptr
= win
; ptr
!= top
; ptr
= ptr
->parent
)
1073 if (!(ptr
->style
& WS_CLIPCHILDREN
)) parent
= ptr
;
1074 if (!(ptr
->style
& WS_CLIPSIBLINGS
)) parent
= ptr
->parent
;
1076 if (parent
== win
&& parent
!= top
&& win
->parent
)
1077 parent
= win
->parent
; /* always go up at least one level if possible */
1079 offset_x
= win
->window_rect
.left
- win
->client_rect
.left
;
1080 offset_y
= win
->window_rect
.top
- win
->client_rect
.top
;
1081 for (ptr
= win
; ptr
!= parent
; ptr
= ptr
->parent
)
1083 offset_x
+= ptr
->client_rect
.left
;
1084 offset_y
+= ptr
->client_rect
.top
;
1086 offset_region( region
, offset_x
, offset_y
);
1087 redraw_window( parent
, region
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1088 offset_region( region
, -offset_x
, -offset_y
);
1092 /* set the window and client rectangles, updating the update region if necessary */
1093 static void set_window_pos( struct window
*win
, struct window
*previous
,
1094 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1095 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1096 const rectangle_t
*valid_rects
)
1098 struct region
*old_vis_rgn
= NULL
, *new_vis_rgn
;
1099 const rectangle_t old_window_rect
= win
->window_rect
;
1100 const rectangle_t old_visible_rect
= win
->visible_rect
;
1101 const rectangle_t old_client_rect
= win
->client_rect
;
1102 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1104 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1106 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1108 /* set the new window info before invalidating anything */
1110 win
->window_rect
= *window_rect
;
1111 win
->visible_rect
= *visible_rect
;
1112 win
->client_rect
= *client_rect
;
1113 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
)
1115 list_remove( &win
->entry
); /* unlink it from the previous location */
1116 if (previous
) list_add_after( &previous
->entry
, &win
->entry
);
1117 else list_add_head( &win
->parent
->children
, &win
->entry
);
1119 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1120 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1122 /* if the window is not visible, everything is easy */
1123 if (!visible
) return;
1125 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
)))
1127 free_region( old_vis_rgn
);
1128 clear_error(); /* ignore error since the window info has been modified already */
1132 /* expose anything revealed by the change */
1134 if (!(swp_flags
& SWP_NOREDRAW
))
1136 offset_region( old_vis_rgn
, old_window_rect
.left
- window_rect
->left
,
1137 old_window_rect
.top
- window_rect
->top
);
1138 if (xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1139 expose_window( win
, new_vis_rgn
);
1141 free_region( old_vis_rgn
);
1143 if (!(win
->style
& WS_VISIBLE
))
1145 /* clear the update region since the window is no longer visible */
1146 validate_whole_window( win
);
1150 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1152 /* expose the whole non-client area if it changed in any way */
1154 if ((swp_flags
& SWP_FRAMECHANGED
) ||
1155 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1156 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ) ||
1157 memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) ))
1159 struct region
*tmp
= create_empty_region();
1163 /* subtract the valid portion of client rect from the total region */
1164 if (!memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) ))
1165 set_region_rect( tmp
, client_rect
);
1166 else if (valid_rects
)
1167 set_region_rect( tmp
, &valid_rects
[0] );
1169 set_region_rect( new_vis_rgn
, window_rect
);
1170 if (subtract_region( tmp
, new_vis_rgn
, tmp
))
1172 offset_region( tmp
, -client_rect
->left
, -client_rect
->top
);
1173 redraw_window( win
, tmp
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1180 free_region( new_vis_rgn
);
1181 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1185 /* create a window */
1186 DECL_HANDLER(create_window
)
1191 if (!req
->parent
) /* return desktop window */
1195 if (!(top_window
= create_window( NULL
, NULL
, req
->atom
, req
->instance
))) return;
1196 top_window
->thread
= NULL
; /* no thread owns the desktop */
1197 top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1203 struct window
*parent
, *owner
= NULL
;
1205 if (!(parent
= get_window( req
->parent
))) return;
1206 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1207 if (owner
== top_window
) owner
= NULL
;
1208 else if (owner
&& parent
!= top_window
)
1210 /* an owned window must be created as top-level */
1211 set_error( STATUS_ACCESS_DENIED
);
1214 if (!(win
= create_window( parent
, owner
, req
->atom
, req
->instance
))) return;
1216 reply
->handle
= win
->handle
;
1217 reply
->extra
= win
->nb_extra_bytes
;
1218 reply
->class_ptr
= get_class_client_ptr( win
->class );
1222 /* set the parent of a window */
1223 DECL_HANDLER(set_parent
)
1225 struct window
*win
, *parent
= NULL
;
1227 if (!(win
= get_window( req
->handle
))) return;
1228 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1230 if (win
== top_window
)
1232 set_error( STATUS_INVALID_PARAMETER
);
1235 reply
->old_parent
= win
->parent
->handle
;
1236 reply
->full_parent
= parent
? parent
->handle
: 0;
1237 set_parent_window( win
, parent
);
1241 /* destroy a window */
1242 DECL_HANDLER(destroy_window
)
1244 struct window
*win
= get_window( req
->handle
);
1247 if (win
!= top_window
) destroy_window( win
);
1248 else set_error( STATUS_ACCESS_DENIED
);
1253 /* set a window owner */
1254 DECL_HANDLER(set_window_owner
)
1256 struct window
*win
= get_window( req
->handle
);
1257 struct window
*owner
= NULL
;
1260 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1261 if (win
== top_window
)
1263 set_error( STATUS_ACCESS_DENIED
);
1266 reply
->prev_owner
= win
->owner
;
1267 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1271 /* get information from a window handle */
1272 DECL_HANDLER(get_window_info
)
1274 struct window
*win
= get_window( req
->handle
);
1276 reply
->full_handle
= 0;
1277 reply
->tid
= reply
->pid
= 0;
1280 reply
->full_handle
= win
->handle
;
1281 reply
->last_active
= win
->handle
;
1282 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1285 reply
->tid
= get_thread_id( win
->thread
);
1286 reply
->pid
= get_process_id( win
->thread
->process
);
1287 reply
->atom
= get_class_atom( win
->class );
1293 /* set some information in a window */
1294 DECL_HANDLER(set_window_info
)
1296 struct window
*win
= get_window( req
->handle
);
1299 if (req
->flags
&& win
== top_window
)
1301 set_error( STATUS_ACCESS_DENIED
);
1304 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1305 req
->extra_offset
< -1 ||
1306 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1308 set_win32_error( ERROR_INVALID_INDEX
);
1311 if (req
->extra_offset
!= -1)
1313 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1315 else if (req
->flags
& SET_WIN_EXTRA
)
1317 set_win32_error( ERROR_INVALID_INDEX
);
1320 reply
->old_style
= win
->style
;
1321 reply
->old_ex_style
= win
->ex_style
;
1322 reply
->old_id
= win
->id
;
1323 reply
->old_instance
= win
->instance
;
1324 reply
->old_user_data
= win
->user_data
;
1325 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1326 if (req
->flags
& SET_WIN_EXSTYLE
) win
->ex_style
= req
->ex_style
;
1327 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1328 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1329 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1330 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1331 &req
->extra_value
, req
->extra_size
);
1333 /* changing window style triggers a non-client paint */
1334 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1338 /* get a list of the window parents, up to the root of the tree */
1339 DECL_HANDLER(get_window_parents
)
1341 struct window
*ptr
, *win
= get_window( req
->handle
);
1343 user_handle_t
*data
;
1346 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1348 reply
->count
= total
;
1349 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1350 if (len
&& ((data
= set_reply_data_size( len
))))
1352 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1353 *data
++ = ptr
->handle
;
1358 /* get a list of the window children */
1359 DECL_HANDLER(get_window_children
)
1361 struct window
*ptr
, *parent
= get_window( req
->parent
);
1363 user_handle_t
*data
;
1368 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1370 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1371 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1375 reply
->count
= total
;
1376 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1377 if (len
&& ((data
= set_reply_data_size( len
))))
1379 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1381 if (len
< sizeof(*data
)) break;
1382 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1383 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1384 *data
++ = ptr
->handle
;
1385 len
-= sizeof(*data
);
1391 /* get a list of the window children that contain a given point */
1392 DECL_HANDLER(get_window_children_from_point
)
1394 struct user_handle_array array
;
1395 struct window
*parent
= get_window( req
->parent
);
1398 if (!parent
) return;
1400 array
.handles
= NULL
;
1403 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1405 reply
->count
= array
.count
;
1406 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1407 if (len
) set_reply_data_ptr( array
.handles
, len
);
1408 else free( array
.handles
);
1412 /* get window tree information from a window handle */
1413 DECL_HANDLER(get_window_tree
)
1415 struct window
*ptr
, *win
= get_window( req
->handle
);
1421 reply
->next_sibling
= 0;
1422 reply
->prev_sibling
= 0;
1423 reply
->first_sibling
= 0;
1424 reply
->last_sibling
= 0;
1425 reply
->first_child
= 0;
1426 reply
->last_child
= 0;
1430 struct window
*parent
= win
->parent
;
1431 reply
->parent
= parent
->handle
;
1432 reply
->owner
= win
->owner
;
1433 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
1434 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
1435 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
1436 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
1438 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
1439 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
1443 /* set the position and Z order of a window */
1444 DECL_HANDLER(set_window_pos
)
1446 const rectangle_t
*visible_rect
= NULL
, *valid_rects
= NULL
;
1447 struct window
*previous
= NULL
;
1448 struct window
*win
= get_window( req
->handle
);
1449 unsigned int flags
= req
->flags
;
1452 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
1454 if (!(flags
& SWP_NOZORDER
))
1456 if (!req
->previous
) /* special case: HWND_TOP */
1458 if (get_first_child(win
->parent
) == win
) flags
|= SWP_NOZORDER
;
1460 else if (req
->previous
== (user_handle_t
)1) /* special case: HWND_BOTTOM */
1462 previous
= get_last_child( win
->parent
);
1466 if (!(previous
= get_window( req
->previous
))) return;
1467 /* previous must be a sibling */
1468 if (previous
->parent
!= win
->parent
)
1470 set_error( STATUS_INVALID_PARAMETER
);
1474 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
1477 /* window rectangle must be ordered properly */
1478 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
1480 set_error( STATUS_INVALID_PARAMETER
);
1484 if (get_req_data_size() >= sizeof(rectangle_t
)) visible_rect
= get_req_data();
1485 if (get_req_data_size() >= 3 * sizeof(rectangle_t
)) valid_rects
= visible_rect
+ 1;
1487 if (!visible_rect
) visible_rect
= &req
->window
;
1488 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, visible_rect
, valid_rects
);
1489 reply
->new_style
= win
->style
;
1493 /* get the window and client rectangles of a window */
1494 DECL_HANDLER(get_window_rectangles
)
1496 struct window
*win
= get_window( req
->handle
);
1500 reply
->window
= win
->window_rect
;
1501 reply
->visible
= win
->visible_rect
;
1502 reply
->client
= win
->client_rect
;
1507 /* get the window text */
1508 DECL_HANDLER(get_window_text
)
1510 struct window
*win
= get_window( req
->handle
);
1512 if (win
&& win
->text
)
1514 size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
1515 if (len
> get_reply_max_size()) len
= get_reply_max_size();
1516 set_reply_data( win
->text
, len
);
1521 /* set the window text */
1522 DECL_HANDLER(set_window_text
)
1524 struct window
*win
= get_window( req
->handle
);
1529 size_t len
= get_req_data_size() / sizeof(WCHAR
);
1532 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
1533 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
1536 if (win
->text
) free( win
->text
);
1542 /* get the coordinates offset between two windows */
1543 DECL_HANDLER(get_windows_offset
)
1547 reply
->x
= reply
->y
= 0;
1550 if (!(win
= get_window( req
->from
))) return;
1553 reply
->x
+= win
->client_rect
.left
;
1554 reply
->y
+= win
->client_rect
.top
;
1560 if (!(win
= get_window( req
->to
))) return;
1563 reply
->x
-= win
->client_rect
.left
;
1564 reply
->y
-= win
->client_rect
.top
;
1571 /* get the visible region of a window */
1572 DECL_HANDLER(get_visible_region
)
1574 struct region
*region
;
1575 struct window
*win
= get_window( req
->window
);
1579 if ((region
= get_visible_region( win
, req
->flags
)))
1581 rectangle_t
*data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
1582 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1587 /* get the window region */
1588 DECL_HANDLER(get_window_region
)
1590 struct window
*win
= get_window( req
->window
);
1594 if (win
->win_region
)
1596 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
1597 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1602 /* set the window region */
1603 DECL_HANDLER(set_window_region
)
1605 struct region
*region
= NULL
;
1606 struct window
*win
= get_window( req
->window
);
1610 if (get_req_data_size()) /* no data means remove the region completely */
1612 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1615 if (win
->win_region
) free_region( win
->win_region
);
1616 win
->win_region
= region
;
1620 /* get a window update region */
1621 DECL_HANDLER(get_update_region
)
1624 unsigned int flags
= req
->flags
;
1625 struct window
*win
= get_window( req
->window
);
1628 if (!win
|| !is_visible( win
)) return;
1630 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1632 /* non-client painting must be delayed if one of the parents is going to
1633 * be repainted and doesn't clip children */
1636 for (ptr
= win
->parent
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
1638 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1643 if (!(reply
->flags
= get_update_flags( win
, flags
)))
1645 /* if window doesn't need any repaint, check the children */
1646 if (!(flags
& UPDATE_NOCHILDREN
) &&
1647 ((flags
& UPDATE_ALLCHILDREN
) || (win
->style
& WS_CLIPCHILDREN
)) &&
1648 !(win
->style
& WS_MINIMIZE
))
1650 reply
->flags
= get_child_update_flags( win
, flags
, &win
);
1654 reply
->child
= win
->handle
;
1656 if (flags
& UPDATE_NOREGION
) return;
1658 if (win
->update_region
)
1660 if (!(data
= get_region_data( win
->update_region
, get_reply_max_size(),
1661 &reply
->total_size
))) return;
1662 set_reply_data_ptr( data
, reply
->total_size
);
1665 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
1667 validate_whole_window( win
);
1671 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
1672 if (reply
->flags
& UPDATE_ERASE
)
1674 win
->paint_flags
&= ~PAINT_ERASE
;
1675 /* desktop window only gets erased, not repainted */
1676 if (win
== top_window
) validate_whole_window( win
);
1682 /* update the z order of a window so that a given rectangle is fully visible */
1683 DECL_HANDLER(update_window_zorder
)
1686 struct window
*ptr
, *win
= get_window( req
->window
);
1688 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
1690 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
1692 if (ptr
== win
) break;
1693 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1694 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
1695 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
1696 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
1697 /* found a window obscuring the rectangle, now move win above this one */
1698 list_remove( &win
->entry
);
1699 list_add_before( &ptr
->entry
, &win
->entry
);
1705 /* mark parts of a window as needing a redraw */
1706 DECL_HANDLER(redraw_window
)
1708 struct region
*region
= NULL
;
1709 struct window
*win
= get_window( req
->window
);
1712 if (!is_visible( win
)) return; /* nothing to do */
1714 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
1716 if (get_req_data_size()) /* no data means whole rectangle */
1718 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1723 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
1725 if (region
) free_region( region
);
1729 /* set a window property */
1730 DECL_HANDLER(set_window_property
)
1732 struct window
*win
= get_window( req
->window
);
1734 if (win
) set_property( win
, req
->atom
, req
->handle
,
1735 req
->string
? PROP_TYPE_STRING
: PROP_TYPE_ATOM
);
1739 /* remove a window property */
1740 DECL_HANDLER(remove_window_property
)
1742 struct window
*win
= get_window( req
->window
);
1744 if (win
) reply
->handle
= remove_property( win
, req
->atom
);
1748 /* get a window property */
1749 DECL_HANDLER(get_window_property
)
1751 struct window
*win
= get_window( req
->window
);
1753 if (win
) reply
->handle
= get_property( win
, req
->atom
);
1757 /* get the list of properties of a window */
1758 DECL_HANDLER(get_window_properties
)
1760 property_data_t
*data
;
1761 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
1762 struct window
*win
= get_window( req
->window
);
1767 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
1768 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
1769 reply
->total
= count
;
1771 if (count
> max
) count
= max
;
1772 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
1774 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
1776 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
1777 data
->atom
= win
->properties
[i
].atom
;
1778 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
1779 data
->handle
= win
->properties
[i
].handle
;
1786 /* get the new window pointer for a global window, checking permissions */
1787 /* helper for set_global_windows request */
1788 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
1797 set_error( STATUS_ACCESS_DENIED
);
1800 *win
= get_window( handle
);
1801 return (*win
!= NULL
);
1804 /* Set/get the global windows */
1805 DECL_HANDLER(set_global_windows
)
1807 struct window
*new_shell_window
= shell_window
;
1808 struct window
*new_shell_listview
= shell_listview
;
1809 struct window
*new_progman_window
= progman_window
;
1810 struct window
*new_taskman_window
= taskman_window
;
1812 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
1813 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
1814 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
1815 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
1817 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
1819 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
1820 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
1822 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
1824 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
1826 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
1828 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
1830 shell_window
= new_shell_window
;
1831 shell_listview
= new_shell_listview
;
1832 progman_window
= new_progman_window
;
1833 taskman_window
= new_taskman_window
;