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 /* link a window into the tree (or unlink it if the new parent is NULL) */
115 static void link_window( struct window
*win
, struct window
*parent
, struct window
*previous
)
117 list_remove( &win
->entry
); /* unlink it from the previous location */
121 win
->parent
= parent
;
122 if (previous
) list_add_after( &previous
->entry
, &win
->entry
);
123 else list_add_head( &parent
->children
, &win
->entry
);
125 else /* move it to parent unlinked list */
127 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
131 /* get next window in Z-order list */
132 static inline struct window
*get_next_window( struct window
*win
)
134 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
135 if (ptr
== &win
->parent
->unlinked
) ptr
= NULL
;
136 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
139 /* get previous window in Z-order list */
140 static inline struct window
*get_prev_window( struct window
*win
)
142 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
143 if (ptr
== &win
->parent
->unlinked
) ptr
= NULL
;
144 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
147 /* get first child in Z-order list */
148 static inline struct window
*get_first_child( struct window
*win
)
150 struct list
*ptr
= list_head( &win
->children
);
151 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
154 /* get last child in Z-order list */
155 static inline struct window
*get_last_child( struct window
*win
)
157 struct list
*ptr
= list_tail( &win
->children
);
158 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
161 /* append a user handle to a handle array */
162 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
164 if (array
->count
>= array
->total
)
166 int new_total
= max( array
->total
* 2, 32 );
167 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
170 free( array
->handles
);
171 set_error( STATUS_NO_MEMORY
);
174 array
->handles
= new_array
;
175 array
->total
= new_total
;
177 array
->handles
[array
->count
++] = handle
;
181 /* set a window property */
182 static void set_property( struct window
*win
, atom_t atom
, obj_handle_t handle
,
183 enum property_type type
)
186 struct property
*new_props
;
188 /* check if it exists already */
189 for (i
= 0; i
< win
->prop_inuse
; i
++)
191 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
196 if (win
->properties
[i
].atom
== atom
)
198 win
->properties
[i
].type
= type
;
199 win
->properties
[i
].handle
= handle
;
204 /* need to add an entry */
205 if (!grab_global_atom( atom
)) return;
209 if (win
->prop_inuse
>= win
->prop_alloc
)
211 /* need to grow the array */
212 if (!(new_props
= realloc( win
->properties
,
213 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
215 set_error( STATUS_NO_MEMORY
);
216 release_global_atom( atom
);
219 win
->prop_alloc
+= 16;
220 win
->properties
= new_props
;
222 free
= win
->prop_inuse
++;
224 win
->properties
[free
].atom
= atom
;
225 win
->properties
[free
].type
= type
;
226 win
->properties
[free
].handle
= handle
;
229 /* remove a window property */
230 static obj_handle_t
remove_property( struct window
*win
, atom_t atom
)
234 for (i
= 0; i
< win
->prop_inuse
; i
++)
236 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
237 if (win
->properties
[i
].atom
== atom
)
239 release_global_atom( atom
);
240 win
->properties
[i
].type
= PROP_TYPE_FREE
;
241 return win
->properties
[i
].handle
;
244 /* FIXME: last error? */
248 /* find a window property */
249 static obj_handle_t
get_property( struct window
*win
, atom_t atom
)
253 for (i
= 0; i
< win
->prop_inuse
; i
++)
255 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
256 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].handle
;
258 /* FIXME: last error? */
262 /* destroy all properties of a window */
263 inline static void destroy_properties( struct window
*win
)
267 if (!win
->properties
) return;
268 for (i
= 0; i
< win
->prop_inuse
; i
++)
270 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
271 release_global_atom( win
->properties
[i
].atom
);
273 free( win
->properties
);
276 /* destroy a window */
277 static void destroy_window( struct window
*win
)
279 assert( win
!= top_window
);
281 /* destroy all children */
282 while (!list_empty(&win
->children
))
283 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
284 while (!list_empty(&win
->unlinked
))
285 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
287 if (win
->thread
->queue
)
289 if (win
->update_region
) inc_queue_paint_count( win
->thread
, -1 );
290 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( win
->thread
, -1 );
291 queue_cleanup_window( win
->thread
, win
->handle
);
293 /* reset global window pointers, if the corresponding window is destroyed */
294 if (win
== shell_window
) shell_window
= NULL
;
295 if (win
== shell_listview
) shell_listview
= NULL
;
296 if (win
== progman_window
) progman_window
= NULL
;
297 if (win
== taskman_window
) taskman_window
= NULL
;
298 free_user_handle( win
->handle
);
299 destroy_properties( win
);
300 list_remove( &win
->entry
);
301 if (win
->win_region
) free_region( win
->win_region
);
302 if (win
->update_region
) free_region( win
->update_region
);
303 release_class( win
->class );
304 if (win
->text
) free( win
->text
);
305 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
309 /* create a new window structure (note: the window is not linked in the window tree) */
310 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
311 atom_t atom
, void *instance
)
315 struct window_class
*class = grab_class( current
->process
, atom
, instance
, &extra_bytes
);
317 if (!class) return NULL
;
319 win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 );
322 release_class( class );
326 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
)))
328 release_class( class );
332 win
->parent
= parent
;
333 win
->owner
= owner
? owner
->handle
: 0;
334 win
->thread
= current
;
337 win
->last_active
= win
->handle
;
338 win
->win_region
= NULL
;
339 win
->update_region
= NULL
;
343 win
->instance
= NULL
;
344 win
->user_data
= NULL
;
346 win
->paint_flags
= 0;
349 win
->properties
= NULL
;
350 win
->nb_extra_bytes
= extra_bytes
;
351 memset( win
->extra_bytes
, 0, extra_bytes
);
352 list_init( &win
->children
);
353 list_init( &win
->unlinked
);
355 /* put it on parent unlinked list */
356 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
358 /* if parent belongs to a different thread, attach the two threads */
359 if (parent
&& parent
->thread
&& parent
->thread
!= current
)
360 attach_thread_input( current
, parent
->thread
);
364 /* destroy all windows belonging to a given thread */
365 void destroy_thread_windows( struct thread
*thread
)
367 user_handle_t handle
= 0;
370 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
372 if (win
->thread
!= thread
) continue;
373 destroy_window( win
);
377 /* check whether child is a descendant of parent */
378 int is_child_window( user_handle_t parent
, user_handle_t child
)
380 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
381 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
383 if (!child_ptr
|| !parent_ptr
) return 0;
384 while (child_ptr
->parent
)
386 if (child_ptr
->parent
== parent_ptr
) return 1;
387 child_ptr
= child_ptr
->parent
;
392 /* check whether window is a top-level window */
393 int is_top_level_window( user_handle_t window
)
395 struct window
*win
= get_user_object( window
, USER_WINDOW
);
396 return (win
&& win
->parent
== top_window
);
399 /* make a window active if possible */
400 int make_window_active( user_handle_t window
)
402 struct window
*owner
, *win
= get_window( window
);
406 /* set last active for window and its owner */
407 win
->last_active
= win
->handle
;
408 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
412 /* increment (or decrement) the window paint count */
413 static inline void inc_window_paint_count( struct window
*win
, int incr
)
415 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
418 /* check if window and all its ancestors are visible */
419 static int is_visible( const struct window
*win
)
421 while (win
&& win
!= top_window
)
423 if (!(win
->style
& WS_VISIBLE
)) return 0;
425 /* if parent is minimized children are not visible */
426 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
431 /* same as is_visible but takes a window handle */
432 int is_window_visible( user_handle_t window
)
434 struct window
*win
= get_user_object( window
, USER_WINDOW
);
436 return is_visible( win
);
439 /* check if point is inside the window */
440 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
442 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
443 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
444 return 0; /* disabled child */
445 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
446 return 0; /* transparent */
447 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
448 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
449 return 0; /* not in window */
450 if (win
->win_region
&&
451 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
452 return 0; /* not in window region */
456 /* find child of 'parent' that contains the given point (in parent-relative coords) */
457 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
461 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
463 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
465 /* if window is minimized or disabled, return at once */
466 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
468 /* if point is not in client area, return at once */
469 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
470 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
473 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
475 return parent
; /* not found any child */
478 /* find all children of 'parent' that contain the given point */
479 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
480 struct user_handle_array
*array
)
484 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
486 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
488 /* if point is in client area, and window is not minimized or disabled, check children */
489 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
490 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
491 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
493 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
494 y
- ptr
->client_rect
.top
, array
))
498 /* now add window to the array */
499 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
504 /* find window containing point (in absolute coords) */
505 user_handle_t
window_from_point( int x
, int y
)
509 if (!top_window
) return 0;
510 ret
= child_window_from_point( top_window
, x
, y
);
514 /* return list of all windows containing point (in absolute coords) */
515 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
519 /* make point relative to top window */
520 for (ptr
= top
->parent
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
522 x
-= ptr
->client_rect
.left
;
523 y
-= ptr
->client_rect
.top
;
526 if (!is_point_in_window( top
, x
, y
)) return 1;
528 /* if point is in client area, and window is not minimized or disabled, check children */
529 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
530 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
531 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
533 if (!get_window_children_from_point( top
, x
- top
->client_rect
.left
,
534 y
- top
->client_rect
.top
, array
))
537 /* now add window to the array */
538 if (!add_handle_to_array( array
, top
->handle
)) return 0;
543 /* return the thread owning a window */
544 struct thread
*get_window_thread( user_handle_t handle
)
546 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
547 if (!win
|| !win
->thread
) return NULL
;
548 return (struct thread
*)grab_object( win
->thread
);
552 /* check if any area of a window needs repainting */
553 static inline int win_needs_repaint( struct window
*win
)
555 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
559 /* find a child of the specified window that needs repainting */
560 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
562 struct window
*ptr
, *ret
= NULL
;
564 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
566 if (!(ptr
->style
& WS_VISIBLE
)) continue;
567 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
569 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
570 ret
= find_child_to_repaint( ptr
, thread
);
574 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
576 /* transparent window, check for non-transparent sibling to paint first */
577 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
579 if (!(ptr
->style
& WS_VISIBLE
)) continue;
580 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
581 if (ptr
->thread
!= thread
) continue;
582 if (win_needs_repaint( ptr
)) return ptr
;
589 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
590 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
592 struct window
*ptr
, *win
= find_child_to_repaint( top_window
, thread
);
596 /* check that it is a child of the specified parent */
597 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
598 if (ptr
->handle
== parent
) break;
599 /* otherwise don't return any window, we don't repaint a child before its parent */
600 if (!ptr
) win
= NULL
;
603 win
->paint_flags
&= ~PAINT_INTERNAL
;
608 /* intersect the window region with the specified region, relative to the window parent */
609 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
611 /* make region relative to window rect */
612 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
613 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
614 /* make region relative to parent again */
615 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
620 /* clip all children of a given window out of the visible region */
621 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
622 struct region
*region
, int offset_x
, int offset_y
)
625 struct region
*tmp
= create_empty_region();
627 if (!tmp
) return NULL
;
628 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
630 if (ptr
== last
) break;
631 if (!(ptr
->style
& WS_VISIBLE
)) continue;
632 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
633 set_region_rect( tmp
, &ptr
->visible_rect
);
634 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
639 offset_region( tmp
, offset_x
, offset_y
);
640 if (!(region
= subtract_region( region
, region
, tmp
))) break;
641 if (is_region_empty( region
)) break;
648 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
649 static void set_region_client_rect( struct region
*region
, struct window
*win
)
653 rect
.left
= max( win
->window_rect
.left
, win
->client_rect
.left
);
654 rect
.top
= max( win
->window_rect
.top
, win
->client_rect
.top
);
655 rect
.right
= min( win
->window_rect
.right
, win
->client_rect
.right
);
656 rect
.bottom
= min( win
->window_rect
.bottom
, win
->client_rect
.bottom
);
657 set_region_rect( region
, &rect
);
661 /* get the top-level window to clip against for a given window */
662 static inline struct window
*get_top_clipping_window( struct window
*win
)
664 while (win
->parent
&& win
->parent
!= top_window
) win
= win
->parent
;
669 /* compute the visible region of a window */
670 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
672 struct region
*tmp
, *region
;
673 int offset_x
, offset_y
;
674 struct window
*top
= get_top_clipping_window( win
);
676 if (!(region
= create_empty_region())) return NULL
;
678 /* first check if all ancestors are visible */
680 if (!is_visible( win
)) return region
; /* empty region */
682 /* create a region relative to the window itself */
684 if ((flags
& DCX_PARENTCLIP
) && win
!= top
&& win
->parent
)
686 set_region_client_rect( region
, win
->parent
);
687 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
688 offset_x
= win
->client_rect
.left
;
689 offset_y
= win
->client_rect
.top
;
691 else if (flags
& DCX_WINDOW
)
693 set_region_rect( region
, &win
->visible_rect
);
694 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
695 offset_x
= win
->window_rect
.left
;
696 offset_y
= win
->window_rect
.top
;
700 set_region_client_rect( region
, win
);
701 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
702 offset_x
= win
->client_rect
.left
;
703 offset_y
= win
->client_rect
.top
;
705 offset_region( region
, -offset_x
, -offset_y
);
709 if (flags
& DCX_CLIPCHILDREN
)
711 if (!clip_children( win
, NULL
, region
,
712 offset_x
- win
->client_rect
.left
,
713 offset_y
- win
->client_rect
.top
)) goto error
;
716 /* clip siblings of ancestors */
718 if (top
&& top
!= win
&& (tmp
= create_empty_region()) != NULL
)
720 offset_region( region
, offset_x
, offset_y
); /* make it relative to parent */
721 while (win
!= top
&& win
->parent
)
723 if (win
->style
& WS_CLIPSIBLINGS
)
725 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
726 if (is_region_empty( region
)) break;
728 /* clip to parent client area */
730 offset_x
+= win
->client_rect
.left
;
731 offset_y
+= win
->client_rect
.top
;
732 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
733 set_region_client_rect( tmp
, win
);
734 if (win
->win_region
&& !intersect_window_region( tmp
, win
))
739 if (!intersect_region( region
, region
, tmp
))
744 if (is_region_empty( region
)) break;
746 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window again */
752 free_region( region
);
757 /* get the window class of a window */
758 struct window_class
* get_window_class( user_handle_t window
)
761 if (!(win
= get_window( window
))) return NULL
;
765 /* return a copy of the specified region cropped to the window client or frame rectangle, */
766 /* and converted from client to window coordinates. Helper for (in)validate_window. */
767 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
769 struct region
*tmp
= create_empty_region();
771 if (!tmp
) return NULL
;
773 /* get bounding rect in client coords */
774 if (frame
) set_region_rect( tmp
, &win
->window_rect
);
775 else set_region_client_rect( tmp
, win
);
776 offset_region( tmp
, -win
->client_rect
.left
, -win
->client_rect
.top
);
778 /* intersect specified region with bounding rect */
779 if (region
&& !intersect_region( tmp
, region
, tmp
)) goto done
;
780 if (is_region_empty( tmp
)) goto done
;
782 /* map it to window coords */
783 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
784 win
->client_rect
.top
- win
->window_rect
.top
);
793 /* set a region as new update region for the window */
794 static void set_update_region( struct window
*win
, struct region
*region
)
796 if (region
&& !is_region_empty( region
))
798 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
799 else free_region( win
->update_region
);
800 win
->update_region
= region
;
804 if (win
->update_region
) inc_window_paint_count( win
, -1 );
805 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_NONCLIENT
);
806 win
->update_region
= NULL
;
807 if (region
) free_region( region
);
812 /* add a region to the update region; the passed region is freed or reused */
813 static int add_update_region( struct window
*win
, struct region
*region
)
815 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
817 free_region( region
);
820 set_update_region( win
, region
);
825 /* validate the non client area of a window */
826 static void validate_non_client( struct window
*win
)
831 if (!win
->update_region
) return; /* nothing to do */
833 /* get client rect in window coords */
834 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
835 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
836 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
837 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
839 if ((tmp
= create_empty_region()))
841 set_region_rect( tmp
, &rect
);
842 if (intersect_region( tmp
, win
->update_region
, tmp
))
843 set_update_region( win
, tmp
);
847 win
->paint_flags
&= ~PAINT_NONCLIENT
;
851 /* validate a window completely so that we don't get any further paint messages for it */
852 static void validate_whole_window( struct window
*win
)
854 set_update_region( win
, NULL
);
856 if (win
->paint_flags
& PAINT_INTERNAL
)
858 win
->paint_flags
&= ~PAINT_INTERNAL
;
859 inc_window_paint_count( win
, -1 );
864 /* validate the update region of a window on all parents; helper for redraw_window */
865 static void validate_parents( struct window
*child
)
867 int offset_x
= 0, offset_y
= 0;
868 struct window
*win
= child
;
869 struct region
*tmp
= NULL
;
871 if (!child
->update_region
) return;
873 while (win
->parent
&& win
->parent
!= top_window
)
875 /* map to parent client coords */
876 offset_x
+= win
->window_rect
.left
;
877 offset_y
+= win
->window_rect
.top
;
881 /* and now map to window coords */
882 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
883 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
885 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
887 if (!tmp
&& !(tmp
= create_empty_region())) return;
888 offset_region( child
->update_region
, offset_x
, offset_y
);
889 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
891 set_update_region( win
, tmp
);
894 /* restore child coords */
895 offset_region( child
->update_region
, -offset_x
, -offset_y
);
898 if (tmp
) free_region( tmp
);
902 /* add/subtract a region (in client coordinates) to the update region of the window */
903 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
906 struct window
*child
;
908 if (flags
& RDW_INVALIDATE
)
910 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
912 if (!add_update_region( win
, tmp
)) return;
914 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
915 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
917 else if (flags
& RDW_VALIDATE
)
919 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
921 set_update_region( win
, NULL
);
923 else if (win
->update_region
)
925 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
927 if (!subtract_region( tmp
, win
->update_region
, tmp
))
932 set_update_region( win
, tmp
);
934 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
935 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~PAINT_ERASE
;
939 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
941 win
->paint_flags
|= PAINT_INTERNAL
;
942 inc_window_paint_count( win
, 1 );
944 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
946 win
->paint_flags
&= ~PAINT_INTERNAL
;
947 inc_window_paint_count( win
, -1 );
950 if (flags
& RDW_UPDATENOW
)
952 validate_parents( win
);
953 flags
&= ~RDW_UPDATENOW
;
956 /* now process children recursively */
958 if (flags
& RDW_NOCHILDREN
) return;
959 if (win
->style
& WS_MINIMIZE
) return;
960 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
962 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
964 /* map to client coordinates */
965 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
966 win
->window_rect
.top
- win
->client_rect
.top
);
968 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
970 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
972 if (!(child
->style
& WS_VISIBLE
)) continue;
973 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
974 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
975 redraw_window( child
, tmp
, 1, flags
);
976 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
982 /* retrieve the update flags for a window depending on the state of the update region */
983 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
985 unsigned int ret
= 0;
987 if (flags
& UPDATE_NONCLIENT
)
989 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
991 if (flags
& UPDATE_ERASE
)
993 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
995 if (flags
& UPDATE_PAINT
)
997 if (win
->update_region
) ret
|= UPDATE_PAINT
;
999 if (flags
& UPDATE_INTERNALPAINT
)
1001 if (win
->paint_flags
& PAINT_INTERNAL
) ret
|= UPDATE_INTERNALPAINT
;
1007 /* iterate through the children of the given window until we find one with some update flags */
1008 static unsigned int get_child_update_flags( struct window
*win
, unsigned int flags
,
1009 struct window
**child
)
1012 unsigned int ret
= 0;
1014 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1016 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1017 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1022 if (ptr
->style
& WS_MINIMIZE
) continue;
1024 /* Note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1025 * here we only want to repaint children of windows that clip them, others
1026 * need to wait for WM_PAINT to be done in the parent first.
1028 if (!(flags
& UPDATE_NOCHILDREN
) &&
1029 ((flags
& UPDATE_ALLCHILDREN
) || (ptr
->style
& WS_CLIPCHILDREN
)))
1031 if ((ret
= get_child_update_flags( ptr
, flags
, child
))) break;
1038 /* expose a region of a window, looking for the top most parent that needs to be exposed */
1039 /* the region is in window coordinates */
1040 static void expose_window( struct window
*win
, struct region
*region
)
1042 struct window
*parent
, *ptr
;
1043 int offset_x
, offset_y
;
1044 struct window
*top
= get_top_clipping_window( win
);
1046 /* find the top most parent that doesn't clip either siblings or children */
1047 for (parent
= ptr
= win
; ptr
!= top
; ptr
= ptr
->parent
)
1049 if (!(ptr
->style
& WS_CLIPCHILDREN
)) parent
= ptr
;
1050 if (!(ptr
->style
& WS_CLIPSIBLINGS
)) parent
= ptr
->parent
;
1052 if (parent
== win
&& parent
!= top
&& win
->parent
)
1053 parent
= win
->parent
; /* always go up at least one level if possible */
1055 offset_x
= win
->window_rect
.left
- win
->client_rect
.left
;
1056 offset_y
= win
->window_rect
.top
- win
->client_rect
.top
;
1057 for (ptr
= win
; ptr
!= parent
; ptr
= ptr
->parent
)
1059 offset_x
+= ptr
->client_rect
.left
;
1060 offset_y
+= ptr
->client_rect
.top
;
1062 offset_region( region
, offset_x
, offset_y
);
1063 redraw_window( parent
, region
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1064 offset_region( region
, -offset_x
, -offset_y
);
1068 /* set the window and client rectangles, updating the update region if necessary */
1069 static void set_window_pos( struct window
*win
, struct window
*previous
,
1070 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1071 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1072 const rectangle_t
*valid_rects
)
1074 struct region
*old_vis_rgn
= NULL
, *new_vis_rgn
;
1075 const rectangle_t old_window_rect
= win
->window_rect
;
1076 const rectangle_t old_visible_rect
= win
->visible_rect
;
1077 const rectangle_t old_client_rect
= win
->client_rect
;
1078 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1080 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1082 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1084 /* set the new window info before invalidating anything */
1086 win
->window_rect
= *window_rect
;
1087 win
->visible_rect
= *visible_rect
;
1088 win
->client_rect
= *client_rect
;
1089 if (!(swp_flags
& SWP_NOZORDER
)) link_window( win
, win
->parent
, previous
);
1090 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1091 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1093 /* if the window is not visible, everything is easy */
1094 if (!visible
) return;
1096 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
)))
1098 free_region( old_vis_rgn
);
1099 clear_error(); /* ignore error since the window info has been modified already */
1103 /* expose anything revealed by the change */
1105 if (!(swp_flags
& SWP_NOREDRAW
))
1107 offset_region( old_vis_rgn
, old_window_rect
.left
- window_rect
->left
,
1108 old_window_rect
.top
- window_rect
->top
);
1109 if (xor_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
))
1110 expose_window( win
, new_vis_rgn
);
1112 free_region( old_vis_rgn
);
1114 if (!(win
->style
& WS_VISIBLE
))
1116 /* clear the update region since the window is no longer visible */
1117 validate_whole_window( win
);
1121 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1123 /* expose the whole non-client area if it changed in any way */
1125 if ((swp_flags
& SWP_FRAMECHANGED
) ||
1126 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1127 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ) ||
1128 memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) ))
1130 struct region
*tmp
= create_empty_region();
1134 /* subtract the valid portion of client rect from the total region */
1135 if (!memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) ))
1136 set_region_rect( tmp
, client_rect
);
1137 else if (valid_rects
)
1138 set_region_rect( tmp
, &valid_rects
[0] );
1140 set_region_rect( new_vis_rgn
, window_rect
);
1141 if (subtract_region( tmp
, new_vis_rgn
, tmp
))
1143 offset_region( tmp
, -client_rect
->left
, -client_rect
->top
);
1144 redraw_window( win
, tmp
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1151 free_region( new_vis_rgn
);
1152 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1156 /* create a window */
1157 DECL_HANDLER(create_window
)
1162 if (!req
->parent
) /* return desktop window */
1166 if (!(top_window
= create_window( NULL
, NULL
, req
->atom
, req
->instance
))) return;
1167 top_window
->thread
= NULL
; /* no thread owns the desktop */
1168 top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
1174 struct window
*parent
, *owner
= NULL
;
1176 if (!(parent
= get_window( req
->parent
))) return;
1177 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1178 if (owner
== top_window
) owner
= NULL
;
1179 else if (owner
&& parent
!= top_window
)
1181 /* an owned window must be created as top-level */
1182 set_error( STATUS_ACCESS_DENIED
);
1185 if (!(win
= create_window( parent
, owner
, req
->atom
, req
->instance
))) return;
1187 reply
->handle
= win
->handle
;
1188 reply
->extra
= win
->nb_extra_bytes
;
1189 reply
->class_ptr
= get_class_client_ptr( win
->class );
1193 /* link a window into the tree */
1194 DECL_HANDLER(link_window
)
1196 struct window
*win
, *parent
= NULL
, *previous
= NULL
;
1198 if (!(win
= get_window( req
->handle
))) return;
1199 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1201 if (win
== top_window
)
1203 set_error( STATUS_INVALID_PARAMETER
);
1206 reply
->full_parent
= parent
? parent
->handle
: 0;
1207 if (parent
&& req
->previous
)
1209 if (req
->previous
== (user_handle_t
)1) /* special case: HWND_BOTTOM */
1211 previous
= get_last_child( parent
);
1212 if (previous
== win
) return; /* nothing to do */
1216 if (!(previous
= get_window( req
->previous
))) return;
1217 /* previous must be a child of parent, and not win itself */
1218 if (previous
->parent
!= parent
|| previous
== win
)
1220 set_error( STATUS_INVALID_PARAMETER
);
1225 link_window( win
, parent
, previous
);
1229 /* destroy a window */
1230 DECL_HANDLER(destroy_window
)
1232 struct window
*win
= get_window( req
->handle
);
1235 if (win
!= top_window
) destroy_window( win
);
1236 else set_error( STATUS_ACCESS_DENIED
);
1241 /* set a window owner */
1242 DECL_HANDLER(set_window_owner
)
1244 struct window
*win
= get_window( req
->handle
);
1245 struct window
*owner
= NULL
;
1248 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1249 if (win
== top_window
)
1251 set_error( STATUS_ACCESS_DENIED
);
1254 reply
->prev_owner
= win
->owner
;
1255 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1259 /* get information from a window handle */
1260 DECL_HANDLER(get_window_info
)
1262 struct window
*win
= get_window( req
->handle
);
1264 reply
->full_handle
= 0;
1265 reply
->tid
= reply
->pid
= 0;
1268 reply
->full_handle
= win
->handle
;
1269 reply
->last_active
= win
->handle
;
1270 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1273 reply
->tid
= get_thread_id( win
->thread
);
1274 reply
->pid
= get_process_id( win
->thread
->process
);
1275 reply
->atom
= get_class_atom( win
->class );
1281 /* set some information in a window */
1282 DECL_HANDLER(set_window_info
)
1284 struct window
*win
= get_window( req
->handle
);
1287 if (req
->flags
&& win
== top_window
)
1289 set_error( STATUS_ACCESS_DENIED
);
1292 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1293 req
->extra_offset
< -1 ||
1294 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1296 set_win32_error( ERROR_INVALID_INDEX
);
1299 if (req
->extra_offset
!= -1)
1301 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1303 else if (req
->flags
& SET_WIN_EXTRA
)
1305 set_win32_error( ERROR_INVALID_INDEX
);
1308 reply
->old_style
= win
->style
;
1309 reply
->old_ex_style
= win
->ex_style
;
1310 reply
->old_id
= win
->id
;
1311 reply
->old_instance
= win
->instance
;
1312 reply
->old_user_data
= win
->user_data
;
1313 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1314 if (req
->flags
& SET_WIN_EXSTYLE
) win
->ex_style
= req
->ex_style
;
1315 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1316 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1317 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1318 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1319 &req
->extra_value
, req
->extra_size
);
1321 /* changing window style triggers a non-client paint */
1322 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1326 /* get a list of the window parents, up to the root of the tree */
1327 DECL_HANDLER(get_window_parents
)
1329 struct window
*ptr
, *win
= get_window( req
->handle
);
1331 user_handle_t
*data
;
1334 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1336 reply
->count
= total
;
1337 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1338 if (len
&& ((data
= set_reply_data_size( len
))))
1340 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1341 *data
++ = ptr
->handle
;
1346 /* get a list of the window children */
1347 DECL_HANDLER(get_window_children
)
1349 struct window
*ptr
, *parent
= get_window( req
->parent
);
1351 user_handle_t
*data
;
1356 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1358 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1359 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1363 reply
->count
= total
;
1364 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1365 if (len
&& ((data
= set_reply_data_size( len
))))
1367 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1369 if (len
< sizeof(*data
)) break;
1370 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1371 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1372 *data
++ = ptr
->handle
;
1373 len
-= sizeof(*data
);
1379 /* get a list of the window children that contain a given point */
1380 DECL_HANDLER(get_window_children_from_point
)
1382 struct user_handle_array array
;
1383 struct window
*parent
= get_window( req
->parent
);
1386 if (!parent
) return;
1388 array
.handles
= NULL
;
1391 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1393 reply
->count
= array
.count
;
1394 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1395 if (len
) set_reply_data_ptr( array
.handles
, len
);
1396 else free( array
.handles
);
1400 /* get window tree information from a window handle */
1401 DECL_HANDLER(get_window_tree
)
1403 struct window
*ptr
, *win
= get_window( req
->handle
);
1409 reply
->next_sibling
= 0;
1410 reply
->prev_sibling
= 0;
1411 reply
->first_sibling
= 0;
1412 reply
->last_sibling
= 0;
1413 reply
->first_child
= 0;
1414 reply
->last_child
= 0;
1418 struct window
*parent
= win
->parent
;
1419 reply
->parent
= parent
->handle
;
1420 reply
->owner
= win
->owner
;
1421 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
1422 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
1423 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
1424 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
1426 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
1427 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
1431 /* set the position and Z order of a window */
1432 DECL_HANDLER(set_window_pos
)
1434 const rectangle_t
*visible_rect
= NULL
, *valid_rects
= NULL
;
1435 struct window
*previous
= NULL
;
1436 struct window
*win
= get_window( req
->handle
);
1437 unsigned int flags
= req
->flags
;
1440 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
1442 if (!(flags
& SWP_NOZORDER
))
1444 if (!req
->previous
) /* special case: HWND_TOP */
1446 if (get_first_child(win
->parent
) == win
) flags
|= SWP_NOZORDER
;
1448 else if (req
->previous
== (user_handle_t
)1) /* special case: HWND_BOTTOM */
1450 previous
= get_last_child( win
->parent
);
1454 if (!(previous
= get_window( req
->previous
))) return;
1455 /* previous must be a sibling */
1456 if (previous
->parent
!= win
->parent
)
1458 set_error( STATUS_INVALID_PARAMETER
);
1462 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
1465 /* window rectangle must be ordered properly */
1466 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
1468 set_error( STATUS_INVALID_PARAMETER
);
1472 if (get_req_data_size() >= sizeof(rectangle_t
)) visible_rect
= get_req_data();
1473 if (get_req_data_size() >= 3 * sizeof(rectangle_t
)) valid_rects
= visible_rect
+ 1;
1475 if (!visible_rect
) visible_rect
= &req
->window
;
1476 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, visible_rect
, valid_rects
);
1477 reply
->new_style
= win
->style
;
1481 /* get the window and client rectangles of a window */
1482 DECL_HANDLER(get_window_rectangles
)
1484 struct window
*win
= get_window( req
->handle
);
1488 reply
->window
= win
->window_rect
;
1489 reply
->visible
= win
->visible_rect
;
1490 reply
->client
= win
->client_rect
;
1495 /* get the window text */
1496 DECL_HANDLER(get_window_text
)
1498 struct window
*win
= get_window( req
->handle
);
1500 if (win
&& win
->text
)
1502 size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
1503 if (len
> get_reply_max_size()) len
= get_reply_max_size();
1504 set_reply_data( win
->text
, len
);
1509 /* set the window text */
1510 DECL_HANDLER(set_window_text
)
1512 struct window
*win
= get_window( req
->handle
);
1517 size_t len
= get_req_data_size() / sizeof(WCHAR
);
1520 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
1521 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
1524 if (win
->text
) free( win
->text
);
1530 /* get the coordinates offset between two windows */
1531 DECL_HANDLER(get_windows_offset
)
1535 reply
->x
= reply
->y
= 0;
1538 if (!(win
= get_window( req
->from
))) return;
1541 reply
->x
+= win
->client_rect
.left
;
1542 reply
->y
+= win
->client_rect
.top
;
1548 if (!(win
= get_window( req
->to
))) return;
1551 reply
->x
-= win
->client_rect
.left
;
1552 reply
->y
-= win
->client_rect
.top
;
1559 /* get the visible region of a window */
1560 DECL_HANDLER(get_visible_region
)
1562 struct region
*region
;
1563 struct window
*win
= get_window( req
->window
);
1567 if ((region
= get_visible_region( win
, req
->flags
)))
1569 rectangle_t
*data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
1570 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1575 /* get the window region */
1576 DECL_HANDLER(get_window_region
)
1578 struct window
*win
= get_window( req
->window
);
1582 if (win
->win_region
)
1584 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
1585 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1590 /* set the window region */
1591 DECL_HANDLER(set_window_region
)
1593 struct region
*region
= NULL
;
1594 struct window
*win
= get_window( req
->window
);
1598 if (get_req_data_size()) /* no data means remove the region completely */
1600 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1603 if (win
->win_region
) free_region( win
->win_region
);
1604 win
->win_region
= region
;
1608 /* get a window update region */
1609 DECL_HANDLER(get_update_region
)
1612 unsigned int flags
= req
->flags
;
1613 struct window
*win
= get_window( req
->window
);
1616 if (!win
|| !is_visible( win
)) return;
1618 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1620 /* non-client painting must be delayed if one of the parents is going to
1621 * be repainted and doesn't clip children */
1624 for (ptr
= win
->parent
; ptr
&& ptr
!= top_window
; ptr
= ptr
->parent
)
1626 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1631 if (!(reply
->flags
= get_update_flags( win
, flags
)))
1633 /* if window doesn't need any repaint, check the children */
1634 if (!(flags
& UPDATE_NOCHILDREN
) &&
1635 ((flags
& UPDATE_ALLCHILDREN
) || (win
->style
& WS_CLIPCHILDREN
)) &&
1636 !(win
->style
& WS_MINIMIZE
))
1638 reply
->flags
= get_child_update_flags( win
, flags
, &win
);
1642 reply
->child
= win
->handle
;
1644 if (flags
& UPDATE_NOREGION
) return;
1646 if (win
->update_region
)
1648 if (!(data
= get_region_data( win
->update_region
, get_reply_max_size(),
1649 &reply
->total_size
))) return;
1650 set_reply_data_ptr( data
, reply
->total_size
);
1653 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
1655 validate_whole_window( win
);
1659 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
1660 if (reply
->flags
& UPDATE_ERASE
)
1662 win
->paint_flags
&= ~PAINT_ERASE
;
1663 /* desktop window only gets erased, not repainted */
1664 if (win
== top_window
) validate_whole_window( win
);
1670 /* mark parts of a window as needing a redraw */
1671 DECL_HANDLER(redraw_window
)
1673 struct region
*region
= NULL
;
1674 struct window
*win
= get_window( req
->window
);
1677 if (!is_visible( win
)) return; /* nothing to do */
1679 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
1681 if (get_req_data_size()) /* no data means whole rectangle */
1683 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1688 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
1690 if (region
) free_region( region
);
1694 /* set a window property */
1695 DECL_HANDLER(set_window_property
)
1697 struct window
*win
= get_window( req
->window
);
1699 if (win
) set_property( win
, req
->atom
, req
->handle
,
1700 req
->string
? PROP_TYPE_STRING
: PROP_TYPE_ATOM
);
1704 /* remove a window property */
1705 DECL_HANDLER(remove_window_property
)
1707 struct window
*win
= get_window( req
->window
);
1709 if (win
) reply
->handle
= remove_property( win
, req
->atom
);
1713 /* get a window property */
1714 DECL_HANDLER(get_window_property
)
1716 struct window
*win
= get_window( req
->window
);
1718 if (win
) reply
->handle
= get_property( win
, req
->atom
);
1722 /* get the list of properties of a window */
1723 DECL_HANDLER(get_window_properties
)
1725 property_data_t
*data
;
1726 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
1727 struct window
*win
= get_window( req
->window
);
1732 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
1733 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
1734 reply
->total
= count
;
1736 if (count
> max
) count
= max
;
1737 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
1739 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
1741 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
1742 data
->atom
= win
->properties
[i
].atom
;
1743 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
1744 data
->handle
= win
->properties
[i
].handle
;
1751 /* get the new window pointer for a global window, checking permissions */
1752 /* helper for set_global_windows request */
1753 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
1762 set_error( STATUS_ACCESS_DENIED
);
1765 *win
= get_window( handle
);
1766 return (*win
!= NULL
);
1769 /* Set/get the global windows */
1770 DECL_HANDLER(set_global_windows
)
1772 struct window
*new_shell_window
= shell_window
;
1773 struct window
*new_shell_listview
= shell_listview
;
1774 struct window
*new_progman_window
= progman_window
;
1775 struct window
*new_taskman_window
= taskman_window
;
1777 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
1778 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
1779 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
1780 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
1782 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
1784 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
1785 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
1787 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
1789 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
1791 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
1793 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
1795 shell_window
= new_shell_window
;
1796 shell_listview
= new_shell_listview
;
1797 progman_window
= new_progman_window
;
1798 taskman_window
= new_taskman_window
;