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 );
341 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
343 win
->parent
= parent
;
344 win
->owner
= owner
? owner
->handle
: 0;
345 win
->thread
= current
;
348 win
->last_active
= win
->handle
;
349 win
->win_region
= NULL
;
350 win
->update_region
= NULL
;
354 win
->instance
= NULL
;
355 win
->user_data
= NULL
;
357 win
->paint_flags
= 0;
360 win
->properties
= NULL
;
361 win
->nb_extra_bytes
= extra_bytes
;
362 memset( win
->extra_bytes
, 0, extra_bytes
);
363 list_init( &win
->children
);
364 list_init( &win
->unlinked
);
366 /* if parent belongs to a different thread, attach the two threads */
367 if (parent
&& parent
->thread
&& parent
->thread
!= current
)
369 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
371 else /* otherwise just make sure that the thread has a message queue */
373 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
376 /* put it on parent unlinked list */
377 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
382 if (win
->handle
) free_user_handle( win
->handle
);
383 release_class( class );
388 /* destroy all windows belonging to a given thread */
389 void destroy_thread_windows( struct thread
*thread
)
391 user_handle_t handle
= 0;
394 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
396 if (win
->thread
!= thread
) continue;
397 destroy_window( win
);
401 /* check whether child is a descendant of parent */
402 int is_child_window( user_handle_t parent
, user_handle_t child
)
404 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
405 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
407 if (!child_ptr
|| !parent_ptr
) return 0;
408 while (child_ptr
->parent
)
410 if (child_ptr
->parent
== parent_ptr
) return 1;
411 child_ptr
= child_ptr
->parent
;
416 /* check whether window is a top-level window */
417 int is_top_level_window( user_handle_t window
)
419 struct window
*win
= get_user_object( window
, USER_WINDOW
);
420 return (win
&& win
->parent
== top_window
);
423 /* make a window active if possible */
424 int make_window_active( user_handle_t window
)
426 struct window
*owner
, *win
= get_window( window
);
430 /* set last active for window and its owner */
431 win
->last_active
= win
->handle
;
432 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
436 /* increment (or decrement) the window paint count */
437 static inline void inc_window_paint_count( struct window
*win
, int incr
)
439 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
442 /* check if window and all its ancestors are visible */
443 static int is_visible( const struct window
*win
)
445 while (win
&& win
!= top_window
)
447 if (!(win
->style
& WS_VISIBLE
)) return 0;
449 /* if parent is minimized children are not visible */
450 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
455 /* same as is_visible but takes a window handle */
456 int is_window_visible( user_handle_t window
)
458 struct window
*win
= get_user_object( window
, USER_WINDOW
);
460 return is_visible( win
);
463 /* check if point is inside the window */
464 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
466 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
467 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
468 return 0; /* disabled child */
469 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
470 return 0; /* transparent */
471 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
472 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
473 return 0; /* not in window */
474 if (win
->win_region
&&
475 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
476 return 0; /* not in window region */
480 /* find child of 'parent' that contains the given point (in parent-relative coords) */
481 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
485 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
487 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
489 /* if window is minimized or disabled, return at once */
490 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
492 /* if point is not in client area, return at once */
493 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
494 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
497 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
499 return parent
; /* not found any child */
502 /* find all children of 'parent' that contain the given point */
503 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
504 struct user_handle_array
*array
)
508 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
510 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
512 /* if point is in client area, and window is not minimized or disabled, check children */
513 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
514 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
515 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
517 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
518 y
- ptr
->client_rect
.top
, array
))
522 /* now add window to the array */
523 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
528 /* find window containing point (in absolute coords) */
529 user_handle_t
window_from_point( int x
, int y
)
533 if (!top_window
) return 0;
534 ret
= child_window_from_point( top_window
, x
, y
);
538 /* return list of all windows containing point (in absolute coords) */
539 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
543 /* make point relative to top window */
544 for (ptr
= top
->parent
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
546 x
-= ptr
->client_rect
.left
;
547 y
-= ptr
->client_rect
.top
;
550 if (!is_point_in_window( top
, x
, y
)) return 1;
552 /* if point is in client area, and window is not minimized or disabled, check children */
553 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
554 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
555 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
557 if (!get_window_children_from_point( top
, x
- top
->client_rect
.left
,
558 y
- top
->client_rect
.top
, array
))
561 /* now add window to the array */
562 if (!add_handle_to_array( array
, top
->handle
)) return 0;
567 /* return the thread owning a window */
568 struct thread
*get_window_thread( user_handle_t handle
)
570 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
571 if (!win
|| !win
->thread
) return NULL
;
572 return (struct thread
*)grab_object( win
->thread
);
576 /* check if any area of a window needs repainting */
577 static inline int win_needs_repaint( struct window
*win
)
579 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
583 /* find a child of the specified window that needs repainting */
584 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
586 struct window
*ptr
, *ret
= NULL
;
588 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
590 if (!(ptr
->style
& WS_VISIBLE
)) continue;
591 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
593 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
594 ret
= find_child_to_repaint( ptr
, thread
);
598 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
600 /* transparent window, check for non-transparent sibling to paint first */
601 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
603 if (!(ptr
->style
& WS_VISIBLE
)) continue;
604 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
605 if (ptr
->thread
!= thread
) continue;
606 if (win_needs_repaint( ptr
)) return ptr
;
613 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
614 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
616 struct window
*ptr
, *win
= find_child_to_repaint( top_window
, thread
);
620 /* check that it is a child of the specified parent */
621 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
622 if (ptr
->handle
== parent
) break;
623 /* otherwise don't return any window, we don't repaint a child before its parent */
624 if (!ptr
) win
= NULL
;
627 win
->paint_flags
&= ~PAINT_INTERNAL
;
632 /* intersect the window region with the specified region, relative to the window parent */
633 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
635 /* make region relative to window rect */
636 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
637 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
638 /* make region relative to parent again */
639 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
644 /* convert coordinates from client to screen coords */
645 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
647 for ( ; win
; win
= win
->parent
)
649 *x
+= win
->client_rect
.left
;
650 *y
+= win
->client_rect
.top
;
654 /* map the region from window to screen coordinates */
655 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
657 int x
= win
->window_rect
.left
;
658 int y
= win
->window_rect
.top
;
659 client_to_screen( win
->parent
, &x
, &y
);
660 offset_region( region
, x
, y
);
664 /* clip all children of a given window out of the visible region */
665 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
666 struct region
*region
, int offset_x
, int offset_y
)
669 struct region
*tmp
= create_empty_region();
671 if (!tmp
) return NULL
;
672 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
674 if (ptr
== last
) break;
675 if (!(ptr
->style
& WS_VISIBLE
)) continue;
676 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
677 set_region_rect( tmp
, &ptr
->visible_rect
);
678 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
683 offset_region( tmp
, offset_x
, offset_y
);
684 if (!(region
= subtract_region( region
, region
, tmp
))) break;
685 if (is_region_empty( region
)) break;
692 /* compute the intersection of two rectangles; return 0 if the result is empty */
693 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
695 dst
->left
= max( src1
->left
, src2
->left
);
696 dst
->top
= max( src1
->top
, src2
->top
);
697 dst
->right
= min( src1
->right
, src2
->right
);
698 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
699 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
703 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
704 static void set_region_client_rect( struct region
*region
, struct window
*win
)
708 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
709 set_region_rect( region
, &rect
);
713 /* get the top-level window to clip against for a given window */
714 static inline struct window
*get_top_clipping_window( struct window
*win
)
716 while (win
->parent
&& win
->parent
!= top_window
) win
= win
->parent
;
721 /* compute the visible region of a window, in window coordinates */
722 static struct region
*get_visible_region( struct window
*win
, struct window
*top
, unsigned int flags
)
724 struct region
*tmp
= NULL
, *region
;
725 int offset_x
, offset_y
;
727 if (!(region
= create_empty_region())) return NULL
;
729 /* first check if all ancestors are visible */
731 if (!is_visible( win
)) return region
; /* empty region */
733 /* create a region relative to the window itself */
735 if ((flags
& DCX_PARENTCLIP
) && win
!= top
&& win
->parent
)
737 set_region_client_rect( region
, win
->parent
);
738 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
740 else if (flags
& DCX_WINDOW
)
742 set_region_rect( region
, &win
->visible_rect
);
743 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
747 set_region_client_rect( region
, win
);
748 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
750 offset_x
= win
->window_rect
.left
;
751 offset_y
= win
->window_rect
.top
;
755 if (flags
& DCX_CLIPCHILDREN
)
757 if (!clip_children( win
, NULL
, region
, win
->client_rect
.left
, win
->client_rect
.top
))
761 /* clip siblings of ancestors */
763 if (top
&& top
!= win
&& (tmp
= create_empty_region()) != NULL
)
765 while (win
!= top
&& win
->parent
)
767 if (win
->style
& WS_CLIPSIBLINGS
)
769 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
770 if (is_region_empty( region
)) break;
772 /* clip to parent client area */
774 offset_x
+= win
->client_rect
.left
;
775 offset_y
+= win
->client_rect
.top
;
776 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
777 set_region_client_rect( tmp
, win
);
778 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
779 if (!intersect_region( region
, region
, tmp
)) goto error
;
780 if (is_region_empty( region
)) break;
784 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
788 if (tmp
) free_region( tmp
);
789 free_region( region
);
794 /* get the window class of a window */
795 struct window_class
* get_window_class( user_handle_t window
)
798 if (!(win
= get_window( window
))) return NULL
;
802 /* return a copy of the specified region cropped to the window client or frame rectangle, */
803 /* and converted from client to window coordinates. Helper for (in)validate_window. */
804 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
806 struct region
*tmp
= create_empty_region();
808 if (!tmp
) return NULL
;
810 /* get bounding rect in client coords */
811 if (frame
) set_region_rect( tmp
, &win
->window_rect
);
812 else set_region_client_rect( tmp
, win
);
813 offset_region( tmp
, -win
->client_rect
.left
, -win
->client_rect
.top
);
815 /* intersect specified region with bounding rect */
816 if (region
&& !intersect_region( tmp
, region
, tmp
)) goto done
;
817 if (is_region_empty( tmp
)) goto done
;
819 /* map it to window coords */
820 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
821 win
->client_rect
.top
- win
->window_rect
.top
);
830 /* set a region as new update region for the window */
831 static void set_update_region( struct window
*win
, struct region
*region
)
833 if (region
&& !is_region_empty( region
))
835 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
836 else free_region( win
->update_region
);
837 win
->update_region
= region
;
841 if (win
->update_region
)
843 inc_window_paint_count( win
, -1 );
844 free_region( win
->update_region
);
846 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_NONCLIENT
);
847 win
->update_region
= NULL
;
848 if (region
) free_region( region
);
853 /* add a region to the update region; the passed region is freed or reused */
854 static int add_update_region( struct window
*win
, struct region
*region
)
856 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
858 free_region( region
);
861 set_update_region( win
, region
);
866 /* validate the non client area of a window */
867 static void validate_non_client( struct window
*win
)
872 if (!win
->update_region
) return; /* nothing to do */
874 /* get client rect in window coords */
875 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
876 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
877 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
878 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
880 if ((tmp
= create_empty_region()))
882 set_region_rect( tmp
, &rect
);
883 if (intersect_region( tmp
, win
->update_region
, tmp
))
884 set_update_region( win
, tmp
);
888 win
->paint_flags
&= ~PAINT_NONCLIENT
;
892 /* validate a window completely so that we don't get any further paint messages for it */
893 static void validate_whole_window( struct window
*win
)
895 set_update_region( win
, NULL
);
897 if (win
->paint_flags
& PAINT_INTERNAL
)
899 win
->paint_flags
&= ~PAINT_INTERNAL
;
900 inc_window_paint_count( win
, -1 );
905 /* validate the update region of a window on all parents; helper for redraw_window */
906 static void validate_parents( struct window
*child
)
908 int offset_x
= 0, offset_y
= 0;
909 struct window
*win
= child
;
910 struct region
*tmp
= NULL
;
912 if (!child
->update_region
) return;
914 while (win
->parent
&& win
->parent
!= top_window
)
916 /* map to parent client coords */
917 offset_x
+= win
->window_rect
.left
;
918 offset_y
+= win
->window_rect
.top
;
922 /* and now map to window coords */
923 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
924 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
926 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
928 if (!tmp
&& !(tmp
= create_empty_region())) return;
929 offset_region( child
->update_region
, offset_x
, offset_y
);
930 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
932 set_update_region( win
, tmp
);
935 /* restore child coords */
936 offset_region( child
->update_region
, -offset_x
, -offset_y
);
939 if (tmp
) free_region( tmp
);
943 /* add/subtract a region (in client coordinates) to the update region of the window */
944 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
947 struct window
*child
;
949 if (flags
& RDW_INVALIDATE
)
951 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
953 if (!add_update_region( win
, tmp
)) return;
955 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
956 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
958 else if (flags
& RDW_VALIDATE
)
960 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
962 set_update_region( win
, NULL
);
964 else if (win
->update_region
)
966 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
968 if (!subtract_region( tmp
, win
->update_region
, tmp
))
973 set_update_region( win
, tmp
);
975 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
976 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~PAINT_ERASE
;
980 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
982 win
->paint_flags
|= PAINT_INTERNAL
;
983 inc_window_paint_count( win
, 1 );
985 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
987 win
->paint_flags
&= ~PAINT_INTERNAL
;
988 inc_window_paint_count( win
, -1 );
991 if (flags
& RDW_UPDATENOW
)
993 validate_parents( win
);
994 flags
&= ~RDW_UPDATENOW
;
997 /* now process children recursively */
999 if (flags
& RDW_NOCHILDREN
) return;
1000 if (win
->style
& WS_MINIMIZE
) return;
1001 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1003 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1005 /* map to client coordinates */
1006 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1007 win
->window_rect
.top
- win
->client_rect
.top
);
1009 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1011 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1013 if (!(child
->style
& WS_VISIBLE
)) continue;
1014 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1015 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1016 redraw_window( child
, tmp
, 1, flags
);
1017 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1023 /* retrieve the update flags for a window depending on the state of the update region */
1024 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1026 unsigned int ret
= 0;
1028 if (flags
& UPDATE_NONCLIENT
)
1030 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1032 if (flags
& UPDATE_ERASE
)
1034 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1036 if (flags
& UPDATE_PAINT
)
1038 if (win
->update_region
) ret
|= UPDATE_PAINT
;
1040 if (flags
& UPDATE_INTERNALPAINT
)
1042 if (win
->paint_flags
& PAINT_INTERNAL
) ret
|= UPDATE_INTERNALPAINT
;
1048 /* iterate through the children of the given window until we find one with some update flags */
1049 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1050 unsigned int flags
, struct window
**child
)
1053 unsigned int ret
= 0;
1055 /* first make sure we want to iterate children at all */
1057 if (win
->style
& WS_MINIMIZE
) return 0;
1059 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1060 * here we only want to repaint children of windows that clip them, others
1061 * need to wait for WM_PAINT to be done in the parent first.
1063 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1065 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1067 if (from_child
) /* skip all children until from_child is found */
1069 if (ptr
== from_child
) from_child
= NULL
;
1072 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1073 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1078 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1083 /* iterate through children and siblings of the given window until we find one with some update flags */
1084 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1085 unsigned int flags
, struct window
**child
)
1088 struct window
*ptr
, *from_sibling
= NULL
;
1090 /* if some parent is not visible start from the next sibling */
1092 if (!is_visible( win
)) return 0;
1093 for (ptr
= from_child
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
1095 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1096 if (ptr
== win
) break;
1099 /* non-client painting must be delayed if one of the parents is going to
1100 * be repainted and doesn't clip children */
1102 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1104 for (ptr
= win
->parent
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
1106 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1109 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1111 for (ptr
= from_sibling
? from_sibling
: from_child
;
1112 ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
1114 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1115 if (ptr
== win
) break;
1121 /* check window itself (only if not restarting from a child) */
1125 if ((ret
= get_update_flags( win
, flags
)))
1133 /* now check children */
1135 if (flags
& UPDATE_NOCHILDREN
) return 0;
1138 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1139 from_sibling
= from_child
;
1142 /* then check siblings and parent siblings */
1144 while (from_sibling
->parent
&& from_sibling
!= win
)
1146 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1148 from_sibling
= from_sibling
->parent
;
1154 /* expose a region of a window, looking for the top most parent that needs to be exposed */
1155 /* the region is in window coordinates */
1156 static void expose_window( struct window
*win
, struct window
*top
, struct region
*region
)
1158 struct window
*parent
, *ptr
;
1159 int offset_x
, offset_y
;
1161 /* find the top most parent that doesn't clip either siblings or children */
1162 for (parent
= ptr
= win
; ptr
!= top
; ptr
= ptr
->parent
)
1164 if (!(ptr
->style
& WS_CLIPCHILDREN
)) parent
= ptr
;
1165 if (!(ptr
->style
& WS_CLIPSIBLINGS
)) parent
= ptr
->parent
;
1167 if (parent
== win
&& parent
!= top
&& win
->parent
)
1168 parent
= win
->parent
; /* always go up at least one level if possible */
1170 offset_x
= win
->window_rect
.left
- win
->client_rect
.left
;
1171 offset_y
= win
->window_rect
.top
- win
->client_rect
.top
;
1172 for (ptr
= win
; ptr
!= parent
; ptr
= ptr
->parent
)
1174 offset_x
+= ptr
->client_rect
.left
;
1175 offset_y
+= ptr
->client_rect
.top
;
1177 offset_region( region
, offset_x
, offset_y
);
1178 redraw_window( parent
, region
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1179 offset_region( region
, -offset_x
, -offset_y
);
1183 /* set the window and client rectangles, updating the update region if necessary */
1184 static void set_window_pos( struct window
*win
, struct window
*previous
,
1185 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1186 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1187 const rectangle_t
*valid_rects
)
1189 struct region
*old_vis_rgn
= NULL
, *new_vis_rgn
;
1190 const rectangle_t old_window_rect
= win
->window_rect
;
1191 const rectangle_t old_visible_rect
= win
->visible_rect
;
1192 const rectangle_t old_client_rect
= win
->client_rect
;
1193 struct window
*top
= get_top_clipping_window( win
);
1194 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1196 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1198 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, top
, DCX_WINDOW
))) return;
1200 /* set the new window info before invalidating anything */
1202 win
->window_rect
= *window_rect
;
1203 win
->visible_rect
= *visible_rect
;
1204 win
->client_rect
= *client_rect
;
1205 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
)
1207 list_remove( &win
->entry
); /* unlink it from the previous location */
1208 if (previous
) list_add_after( &previous
->entry
, &win
->entry
);
1209 else list_add_head( &win
->parent
->children
, &win
->entry
);
1211 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1212 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1214 /* if the window is not visible, everything is easy */
1215 if (!visible
) return;
1217 if (!(new_vis_rgn
= get_visible_region( win
, top
, DCX_WINDOW
)))
1219 free_region( old_vis_rgn
);
1220 clear_error(); /* ignore error since the window info has been modified already */
1224 /* expose anything revealed by the change */
1226 if (!(swp_flags
& SWP_NOREDRAW
))
1228 offset_region( old_vis_rgn
, old_window_rect
.left
- window_rect
->left
,
1229 old_window_rect
.top
- window_rect
->top
);
1230 if (xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1231 expose_window( win
, top
, new_vis_rgn
);
1233 free_region( old_vis_rgn
);
1235 if (!(win
->style
& WS_VISIBLE
))
1237 /* clear the update region since the window is no longer visible */
1238 validate_whole_window( win
);
1242 /* crop update region to the new window rect */
1244 if (win
->update_region
&&
1245 (window_rect
->right
- window_rect
->left
< old_window_rect
.right
- old_window_rect
.left
||
1246 window_rect
->bottom
- window_rect
->top
< old_window_rect
.bottom
- old_window_rect
.top
))
1248 struct region
*tmp
= create_empty_region();
1251 set_region_rect( tmp
, window_rect
);
1252 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1253 if (intersect_region( tmp
, win
->update_region
, tmp
))
1254 set_update_region( win
, tmp
);
1260 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1262 /* expose the whole non-client area if it changed in any way */
1264 if ((swp_flags
& SWP_FRAMECHANGED
) ||
1265 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1266 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ) ||
1267 memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) ))
1269 struct region
*tmp
= create_empty_region();
1273 /* subtract the valid portion of client rect from the total region */
1274 if (!memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) ))
1275 set_region_rect( tmp
, client_rect
);
1276 else if (valid_rects
)
1277 set_region_rect( tmp
, &valid_rects
[0] );
1279 set_region_rect( new_vis_rgn
, window_rect
);
1280 if (subtract_region( tmp
, new_vis_rgn
, tmp
))
1282 offset_region( tmp
, -client_rect
->left
, -client_rect
->top
);
1283 redraw_window( win
, tmp
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1290 free_region( new_vis_rgn
);
1291 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1295 /* create a window */
1296 DECL_HANDLER(create_window
)
1301 if (!req
->parent
) /* return desktop window */
1305 if (!(top_window
= create_window( NULL
, NULL
, req
->atom
, req
->instance
))) return;
1306 top_window
->thread
= NULL
; /* no thread owns the desktop */
1307 top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1313 struct window
*parent
, *owner
= NULL
;
1315 if (!(parent
= get_window( req
->parent
))) return;
1316 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1317 if (owner
== top_window
) owner
= NULL
;
1318 else if (owner
&& parent
!= top_window
)
1320 /* an owned window must be created as top-level */
1321 set_error( STATUS_ACCESS_DENIED
);
1324 if (!(win
= create_window( parent
, owner
, req
->atom
, req
->instance
))) return;
1326 reply
->handle
= win
->handle
;
1327 reply
->extra
= win
->nb_extra_bytes
;
1328 reply
->class_ptr
= get_class_client_ptr( win
->class );
1332 /* set the parent of a window */
1333 DECL_HANDLER(set_parent
)
1335 struct window
*win
, *parent
= NULL
;
1337 if (!(win
= get_window( req
->handle
))) return;
1338 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1340 if (win
== top_window
)
1342 set_error( STATUS_INVALID_PARAMETER
);
1345 reply
->old_parent
= win
->parent
->handle
;
1346 reply
->full_parent
= parent
? parent
->handle
: 0;
1347 set_parent_window( win
, parent
);
1351 /* destroy a window */
1352 DECL_HANDLER(destroy_window
)
1354 struct window
*win
= get_window( req
->handle
);
1357 if (win
!= top_window
) destroy_window( win
);
1358 else set_error( STATUS_ACCESS_DENIED
);
1363 /* set a window owner */
1364 DECL_HANDLER(set_window_owner
)
1366 struct window
*win
= get_window( req
->handle
);
1367 struct window
*owner
= NULL
;
1370 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1371 if (win
== top_window
)
1373 set_error( STATUS_ACCESS_DENIED
);
1376 reply
->prev_owner
= win
->owner
;
1377 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1381 /* get information from a window handle */
1382 DECL_HANDLER(get_window_info
)
1384 struct window
*win
= get_window( req
->handle
);
1386 reply
->full_handle
= 0;
1387 reply
->tid
= reply
->pid
= 0;
1390 reply
->full_handle
= win
->handle
;
1391 reply
->last_active
= win
->handle
;
1392 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1395 reply
->tid
= get_thread_id( win
->thread
);
1396 reply
->pid
= get_process_id( win
->thread
->process
);
1397 reply
->atom
= get_class_atom( win
->class );
1403 /* set some information in a window */
1404 DECL_HANDLER(set_window_info
)
1406 struct window
*win
= get_window( req
->handle
);
1409 if (req
->flags
&& win
== top_window
)
1411 set_error( STATUS_ACCESS_DENIED
);
1414 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1415 req
->extra_offset
< -1 ||
1416 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1418 set_win32_error( ERROR_INVALID_INDEX
);
1421 if (req
->extra_offset
!= -1)
1423 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1425 else if (req
->flags
& SET_WIN_EXTRA
)
1427 set_win32_error( ERROR_INVALID_INDEX
);
1430 reply
->old_style
= win
->style
;
1431 reply
->old_ex_style
= win
->ex_style
;
1432 reply
->old_id
= win
->id
;
1433 reply
->old_instance
= win
->instance
;
1434 reply
->old_user_data
= win
->user_data
;
1435 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1436 if (req
->flags
& SET_WIN_EXSTYLE
) win
->ex_style
= req
->ex_style
;
1437 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1438 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1439 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1440 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1441 &req
->extra_value
, req
->extra_size
);
1443 /* changing window style triggers a non-client paint */
1444 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1448 /* get a list of the window parents, up to the root of the tree */
1449 DECL_HANDLER(get_window_parents
)
1451 struct window
*ptr
, *win
= get_window( req
->handle
);
1453 user_handle_t
*data
;
1456 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1458 reply
->count
= total
;
1459 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1460 if (len
&& ((data
= set_reply_data_size( len
))))
1462 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1463 *data
++ = ptr
->handle
;
1468 /* get a list of the window children */
1469 DECL_HANDLER(get_window_children
)
1471 struct window
*ptr
, *parent
= get_window( req
->parent
);
1473 user_handle_t
*data
;
1478 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1480 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1481 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1485 reply
->count
= total
;
1486 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1487 if (len
&& ((data
= set_reply_data_size( len
))))
1489 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1491 if (len
< sizeof(*data
)) break;
1492 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1493 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1494 *data
++ = ptr
->handle
;
1495 len
-= sizeof(*data
);
1501 /* get a list of the window children that contain a given point */
1502 DECL_HANDLER(get_window_children_from_point
)
1504 struct user_handle_array array
;
1505 struct window
*parent
= get_window( req
->parent
);
1508 if (!parent
) return;
1510 array
.handles
= NULL
;
1513 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1515 reply
->count
= array
.count
;
1516 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1517 if (len
) set_reply_data_ptr( array
.handles
, len
);
1518 else free( array
.handles
);
1522 /* get window tree information from a window handle */
1523 DECL_HANDLER(get_window_tree
)
1525 struct window
*ptr
, *win
= get_window( req
->handle
);
1531 reply
->next_sibling
= 0;
1532 reply
->prev_sibling
= 0;
1533 reply
->first_sibling
= 0;
1534 reply
->last_sibling
= 0;
1535 reply
->first_child
= 0;
1536 reply
->last_child
= 0;
1540 struct window
*parent
= win
->parent
;
1541 reply
->parent
= parent
->handle
;
1542 reply
->owner
= win
->owner
;
1543 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
1544 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
1545 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
1546 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
1548 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
1549 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
1553 /* set the position and Z order of a window */
1554 DECL_HANDLER(set_window_pos
)
1556 const rectangle_t
*visible_rect
= NULL
, *valid_rects
= NULL
;
1557 struct window
*previous
= NULL
;
1558 struct window
*win
= get_window( req
->handle
);
1559 unsigned int flags
= req
->flags
;
1562 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
1564 if (!(flags
& SWP_NOZORDER
))
1566 if (!req
->previous
) /* special case: HWND_TOP */
1568 if (get_first_child(win
->parent
) == win
) flags
|= SWP_NOZORDER
;
1570 else if (req
->previous
== (user_handle_t
)1) /* special case: HWND_BOTTOM */
1572 previous
= get_last_child( win
->parent
);
1576 if (!(previous
= get_window( req
->previous
))) return;
1577 /* previous must be a sibling */
1578 if (previous
->parent
!= win
->parent
)
1580 set_error( STATUS_INVALID_PARAMETER
);
1584 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
1587 /* window rectangle must be ordered properly */
1588 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
1590 set_error( STATUS_INVALID_PARAMETER
);
1594 if (get_req_data_size() >= sizeof(rectangle_t
)) visible_rect
= get_req_data();
1595 if (get_req_data_size() >= 3 * sizeof(rectangle_t
)) valid_rects
= visible_rect
+ 1;
1597 if (!visible_rect
) visible_rect
= &req
->window
;
1598 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, visible_rect
, valid_rects
);
1599 reply
->new_style
= win
->style
;
1603 /* get the window and client rectangles of a window */
1604 DECL_HANDLER(get_window_rectangles
)
1606 struct window
*win
= get_window( req
->handle
);
1610 reply
->window
= win
->window_rect
;
1611 reply
->visible
= win
->visible_rect
;
1612 reply
->client
= win
->client_rect
;
1617 /* get the window text */
1618 DECL_HANDLER(get_window_text
)
1620 struct window
*win
= get_window( req
->handle
);
1622 if (win
&& win
->text
)
1624 size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
1625 if (len
> get_reply_max_size()) len
= get_reply_max_size();
1626 set_reply_data( win
->text
, len
);
1631 /* set the window text */
1632 DECL_HANDLER(set_window_text
)
1634 struct window
*win
= get_window( req
->handle
);
1639 size_t len
= get_req_data_size() / sizeof(WCHAR
);
1642 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
1643 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
1646 if (win
->text
) free( win
->text
);
1652 /* get the coordinates offset between two windows */
1653 DECL_HANDLER(get_windows_offset
)
1657 reply
->x
= reply
->y
= 0;
1660 if (!(win
= get_window( req
->from
))) return;
1663 reply
->x
+= win
->client_rect
.left
;
1664 reply
->y
+= win
->client_rect
.top
;
1670 if (!(win
= get_window( req
->to
))) return;
1673 reply
->x
-= win
->client_rect
.left
;
1674 reply
->y
-= win
->client_rect
.top
;
1681 /* get the visible region of a window */
1682 DECL_HANDLER(get_visible_region
)
1684 struct region
*region
;
1685 struct window
*top
, *win
= get_window( req
->window
);
1689 top
= get_top_clipping_window( win
);
1690 if ((region
= get_visible_region( win
, top
, req
->flags
)))
1693 map_win_region_to_screen( win
, region
);
1694 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
1695 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1697 reply
->top_win
= top
->handle
;
1698 reply
->top_org_x
= top
->visible_rect
.left
;
1699 reply
->top_org_y
= top
->visible_rect
.top
;
1700 reply
->win_org_x
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
.left
: win
->client_rect
.left
;
1701 reply
->win_org_y
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
.top
: win
->client_rect
.top
;
1702 client_to_screen( top
->parent
, &reply
->top_org_x
, &reply
->top_org_y
);
1703 client_to_screen( win
->parent
, &reply
->win_org_x
, &reply
->win_org_y
);
1707 /* get the window region */
1708 DECL_HANDLER(get_window_region
)
1710 struct window
*win
= get_window( req
->window
);
1714 if (win
->win_region
)
1716 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
1717 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1722 /* set the window region */
1723 DECL_HANDLER(set_window_region
)
1725 struct region
*region
= NULL
;
1726 struct window
*win
= get_window( req
->window
);
1730 if (get_req_data_size()) /* no data means remove the region completely */
1732 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1735 if (win
->win_region
) free_region( win
->win_region
);
1736 win
->win_region
= region
;
1740 /* get a window update region */
1741 DECL_HANDLER(get_update_region
)
1744 unsigned int flags
= req
->flags
;
1745 struct window
*from_child
= NULL
;
1746 struct window
*win
= get_window( req
->window
);
1751 if (req
->from_child
)
1755 if (!(from_child
= get_window( req
->from_child
))) return;
1757 /* make sure from_child is a child of win */
1759 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
1762 set_error( STATUS_INVALID_PARAMETER
);
1767 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
1768 reply
->child
= win
->handle
;
1770 if (flags
& UPDATE_NOREGION
) return;
1772 if (win
->update_region
)
1774 /* convert update region to screen coordinates */
1775 struct region
*region
= create_empty_region();
1777 if (!region
) return;
1778 if (!copy_region( region
, win
->update_region
))
1780 free_region( region
);
1783 map_win_region_to_screen( win
, region
);
1784 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
1785 &reply
->total_size
))) return;
1786 set_reply_data_ptr( data
, reply
->total_size
);
1789 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
1791 validate_whole_window( win
);
1795 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
1796 if (reply
->flags
& UPDATE_ERASE
)
1798 win
->paint_flags
&= ~PAINT_ERASE
;
1799 /* desktop window only gets erased, not repainted */
1800 if (win
== top_window
) validate_whole_window( win
);
1806 /* update the z order of a window so that a given rectangle is fully visible */
1807 DECL_HANDLER(update_window_zorder
)
1810 struct window
*ptr
, *win
= get_window( req
->window
);
1812 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
1814 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
1816 if (ptr
== win
) break;
1817 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1818 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
1819 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
1820 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
1821 /* found a window obscuring the rectangle, now move win above this one */
1822 list_remove( &win
->entry
);
1823 list_add_before( &ptr
->entry
, &win
->entry
);
1829 /* mark parts of a window as needing a redraw */
1830 DECL_HANDLER(redraw_window
)
1832 struct region
*region
= NULL
;
1833 struct window
*win
= get_window( req
->window
);
1836 if (!is_visible( win
)) return; /* nothing to do */
1838 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
1840 if (get_req_data_size()) /* no data means whole rectangle */
1842 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1847 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
1849 if (region
) free_region( region
);
1853 /* set a window property */
1854 DECL_HANDLER(set_window_property
)
1856 struct window
*win
= get_window( req
->window
);
1860 if (get_req_data_size())
1862 atom_t atom
= add_global_atom( get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
1865 set_property( win
, atom
, req
->handle
, PROP_TYPE_STRING
);
1866 release_global_atom( atom
);
1869 else set_property( win
, req
->atom
, req
->handle
, PROP_TYPE_ATOM
);
1873 /* remove a window property */
1874 DECL_HANDLER(remove_window_property
)
1876 struct window
*win
= get_window( req
->window
);
1880 atom_t atom
= req
->atom
;
1881 if (get_req_data_size()) atom
= find_global_atom( get_req_data(),
1882 get_req_data_size() / sizeof(WCHAR
) );
1883 if (atom
) reply
->handle
= remove_property( win
, atom
);
1888 /* get a window property */
1889 DECL_HANDLER(get_window_property
)
1891 struct window
*win
= get_window( req
->window
);
1895 atom_t atom
= req
->atom
;
1896 if (get_req_data_size()) atom
= find_global_atom( get_req_data(),
1897 get_req_data_size() / sizeof(WCHAR
) );
1898 if (atom
) reply
->handle
= get_property( win
, atom
);
1903 /* get the list of properties of a window */
1904 DECL_HANDLER(get_window_properties
)
1906 property_data_t
*data
;
1907 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
1908 struct window
*win
= get_window( req
->window
);
1913 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
1914 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
1915 reply
->total
= count
;
1917 if (count
> max
) count
= max
;
1918 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
1920 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
1922 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
1923 data
->atom
= win
->properties
[i
].atom
;
1924 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
1925 data
->handle
= win
->properties
[i
].handle
;
1932 /* get the new window pointer for a global window, checking permissions */
1933 /* helper for set_global_windows request */
1934 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
1943 set_error( STATUS_ACCESS_DENIED
);
1946 *win
= get_window( handle
);
1947 return (*win
!= NULL
);
1950 /* Set/get the global windows */
1951 DECL_HANDLER(set_global_windows
)
1953 struct window
*new_shell_window
= shell_window
;
1954 struct window
*new_shell_listview
= shell_listview
;
1955 struct window
*new_progman_window
= progman_window
;
1956 struct window
*new_taskman_window
= taskman_window
;
1958 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
1959 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
1960 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
1961 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
1963 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
1965 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
1966 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
1968 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
1970 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
1972 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
1974 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
1976 shell_window
= new_shell_window
;
1977 shell_listview
= new_shell_listview
;
1978 progman_window
= new_progman_window
;
1979 taskman_window
= new_taskman_window
;