2 * Server-side window handling
4 * Copyright (C) 2001 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
28 #define WIN32_NO_STATUS
42 /* a window property */
45 unsigned short type
; /* property type (see below) */
46 atom_t atom
; /* property atom */
47 obj_handle_t handle
; /* property handle (user-defined storage) */
52 PROP_TYPE_FREE
, /* free entry */
53 PROP_TYPE_STRING
, /* atom that was originally a string */
54 PROP_TYPE_ATOM
/* plain atom */
60 struct window
*parent
; /* parent window */
61 user_handle_t owner
; /* owner of this window */
62 struct list children
; /* list of children in Z-order */
63 struct list unlinked
; /* list of children not linked in the Z-order list */
64 struct list entry
; /* entry in parent's children list */
65 user_handle_t handle
; /* full handle for this window */
66 struct thread
*thread
; /* thread owning the window */
67 struct desktop
*desktop
; /* desktop that the window belongs to */
68 struct window_class
*class; /* window class */
69 atom_t atom
; /* class atom */
70 user_handle_t last_active
; /* last active popup */
71 rectangle_t window_rect
; /* window rectangle (relative to parent client area) */
72 rectangle_t visible_rect
; /* visible part of window rect (relative to parent client area) */
73 rectangle_t client_rect
; /* client rectangle (relative to parent client area) */
74 struct region
*win_region
; /* region for shaped windows (relative to window rect) */
75 struct region
*update_region
; /* update region (relative to window rect) */
76 unsigned int style
; /* window style */
77 unsigned int ex_style
; /* window extended style */
78 unsigned int id
; /* window id */
79 void* instance
; /* creator instance */
80 int is_unicode
; /* ANSI or unicode */
81 unsigned long user_data
; /* user-specific data */
82 WCHAR
*text
; /* window caption text */
83 unsigned int paint_flags
; /* various painting flags */
84 int prop_inuse
; /* number of in-use window properties */
85 int prop_alloc
; /* number of allocated window properties */
86 struct property
*properties
; /* window properties array */
87 int nb_extra_bytes
; /* number of extra bytes */
88 char extra_bytes
[1]; /* extra bytes storage */
91 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
92 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
93 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
94 #define PAINT_DELAYED_ERASE 0x08 /* still needs erase after WM_ERASEBKGND */
96 /* growable array of user handles */
97 struct user_handle_array
99 user_handle_t
*handles
;
104 /* global window pointers */
105 static struct window
*shell_window
;
106 static struct window
*shell_listview
;
107 static struct window
*progman_window
;
108 static struct window
*taskman_window
;
110 /* retrieve a pointer to a window from its handle */
111 static inline struct window
*get_window( user_handle_t handle
)
113 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
114 if (!ret
) set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
118 /* check if window is the desktop */
119 static inline int is_desktop_window( const struct window
*win
)
121 return !win
->parent
; /* only desktop windows have no parent */
124 /* change the parent of a window (or unlink the window if the new parent is NULL) */
125 static int set_parent_window( struct window
*win
, struct window
*parent
)
129 /* make sure parent is not a child of window */
130 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
134 set_error( STATUS_INVALID_PARAMETER
);
139 list_remove( &win
->entry
); /* unlink it from the previous location */
143 win
->parent
= parent
;
144 list_add_head( &parent
->children
, &win
->entry
);
146 /* if parent belongs to a different thread and the window isn't */
147 /* top-level, attach the two threads */
148 if (parent
->thread
&& parent
->thread
!= win
->thread
&& !is_desktop_window(parent
))
149 attach_thread_input( win
->thread
, parent
->thread
);
151 else /* move it to parent unlinked list */
153 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
158 /* get next window in Z-order list */
159 static inline struct window
*get_next_window( struct window
*win
)
161 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
162 if (ptr
== &win
->parent
->unlinked
) ptr
= NULL
;
163 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
166 /* get previous window in Z-order list */
167 static inline struct window
*get_prev_window( struct window
*win
)
169 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
170 if (ptr
== &win
->parent
->unlinked
) ptr
= NULL
;
171 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
174 /* get first child in Z-order list */
175 static inline struct window
*get_first_child( struct window
*win
)
177 struct list
*ptr
= list_head( &win
->children
);
178 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
181 /* get last child in Z-order list */
182 static inline struct window
*get_last_child( struct window
*win
)
184 struct list
*ptr
= list_tail( &win
->children
);
185 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
188 /* append a user handle to a handle array */
189 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
191 if (array
->count
>= array
->total
)
193 int new_total
= max( array
->total
* 2, 32 );
194 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
197 free( array
->handles
);
198 set_error( STATUS_NO_MEMORY
);
201 array
->handles
= new_array
;
202 array
->total
= new_total
;
204 array
->handles
[array
->count
++] = handle
;
208 /* set a window property */
209 static void set_property( struct window
*win
, atom_t atom
, obj_handle_t handle
, enum property_type type
)
212 struct property
*new_props
;
214 /* check if it exists already */
215 for (i
= 0; i
< win
->prop_inuse
; i
++)
217 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
222 if (win
->properties
[i
].atom
== atom
)
224 win
->properties
[i
].type
= type
;
225 win
->properties
[i
].handle
= handle
;
230 /* need to add an entry */
231 if (!grab_global_atom( NULL
, atom
)) return;
235 if (win
->prop_inuse
>= win
->prop_alloc
)
237 /* need to grow the array */
238 if (!(new_props
= realloc( win
->properties
,
239 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
241 set_error( STATUS_NO_MEMORY
);
242 release_global_atom( NULL
, atom
);
245 win
->prop_alloc
+= 16;
246 win
->properties
= new_props
;
248 free
= win
->prop_inuse
++;
250 win
->properties
[free
].atom
= atom
;
251 win
->properties
[free
].type
= type
;
252 win
->properties
[free
].handle
= handle
;
255 /* remove a window property */
256 static obj_handle_t
remove_property( struct window
*win
, atom_t atom
)
260 for (i
= 0; i
< win
->prop_inuse
; i
++)
262 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
263 if (win
->properties
[i
].atom
== atom
)
265 release_global_atom( NULL
, atom
);
266 win
->properties
[i
].type
= PROP_TYPE_FREE
;
267 return win
->properties
[i
].handle
;
270 /* FIXME: last error? */
274 /* find a window property */
275 static obj_handle_t
get_property( struct window
*win
, atom_t atom
)
279 for (i
= 0; i
< win
->prop_inuse
; i
++)
281 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
282 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].handle
;
284 /* FIXME: last error? */
288 /* destroy all properties of a window */
289 static inline void destroy_properties( struct window
*win
)
293 if (!win
->properties
) return;
294 for (i
= 0; i
< win
->prop_inuse
; i
++)
296 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
297 release_global_atom( NULL
, win
->properties
[i
].atom
);
299 free( win
->properties
);
302 /* detach a window from its owner thread but keep the window around */
303 static void detach_window_thread( struct window
*win
)
305 struct thread
*thread
= win
->thread
;
310 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
311 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
312 queue_cleanup_window( thread
, win
->handle
);
314 assert( thread
->desktop_users
> 0 );
315 thread
->desktop_users
--;
316 release_class( win
->class );
319 /* don't hold a reference to the desktop so that the desktop window can be */
320 /* destroyed when the desktop ref count reaches zero */
321 release_object( win
->desktop
);
325 /* destroy a window */
326 void destroy_window( struct window
*win
)
328 /* destroy all children */
329 while (!list_empty(&win
->children
))
330 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
331 while (!list_empty(&win
->unlinked
))
332 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
334 /* reset global window pointers, if the corresponding window is destroyed */
335 if (win
== shell_window
) shell_window
= NULL
;
336 if (win
== shell_listview
) shell_listview
= NULL
;
337 if (win
== progman_window
) progman_window
= NULL
;
338 if (win
== taskman_window
) taskman_window
= NULL
;
339 free_user_handle( win
->handle
);
340 destroy_properties( win
);
341 list_remove( &win
->entry
);
342 if (is_desktop_window(win
))
344 assert( win
->desktop
->top_window
== win
);
345 win
->desktop
->top_window
= NULL
;
347 detach_window_thread( win
);
348 if (win
->win_region
) free_region( win
->win_region
);
349 if (win
->update_region
) free_region( win
->update_region
);
350 if (win
->class) release_class( win
->class );
352 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
356 /* get the process owning the top window of a given desktop */
357 struct process
*get_top_window_owner( struct desktop
*desktop
)
359 struct window
*win
= desktop
->top_window
;
360 if (!win
|| !win
->thread
) return NULL
;
361 return win
->thread
->process
;
364 /* attempt to close the desktop window when the last process using it is gone */
365 void close_desktop_window( struct desktop
*desktop
)
367 struct window
*win
= desktop
->top_window
;
368 if (win
&& win
->thread
) post_message( win
->handle
, WM_CLOSE
, 0, 0 );
371 /* create a new window structure (note: the window is not linked in the window tree) */
372 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
373 atom_t atom
, void *instance
)
377 struct desktop
*desktop
;
378 struct window_class
*class;
380 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
382 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
384 release_object( desktop
);
388 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
389 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
391 win
->parent
= parent
;
392 win
->owner
= owner
? owner
->handle
: 0;
393 win
->thread
= current
;
394 win
->desktop
= desktop
;
397 win
->last_active
= win
->handle
;
398 win
->win_region
= NULL
;
399 win
->update_region
= NULL
;
403 win
->instance
= NULL
;
407 win
->paint_flags
= 0;
410 win
->properties
= NULL
;
411 win
->nb_extra_bytes
= extra_bytes
;
412 memset( win
->extra_bytes
, 0, extra_bytes
);
413 list_init( &win
->children
);
414 list_init( &win
->unlinked
);
416 /* parent must be on the same desktop */
417 if (parent
&& parent
->desktop
!= desktop
)
419 set_error( STATUS_ACCESS_DENIED
);
423 /* if no parent, class must be the desktop */
424 if (!parent
&& !is_desktop_class( class ))
426 set_error( STATUS_ACCESS_DENIED
);
430 /* if parent belongs to a different thread and the window isn't */
431 /* top-level, attach the two threads */
432 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
434 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
436 else /* otherwise just make sure that the thread has a message queue */
438 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
441 /* put it on parent unlinked list */
442 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
445 list_init( &win
->entry
);
446 assert( !desktop
->top_window
);
447 desktop
->top_window
= win
;
448 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
451 current
->desktop_users
++;
457 if (win
->handle
) free_user_handle( win
->handle
);
460 release_object( desktop
);
461 release_class( class );
465 /* destroy all windows belonging to a given thread */
466 void destroy_thread_windows( struct thread
*thread
)
468 user_handle_t handle
= 0;
471 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
473 if (win
->thread
!= thread
) continue;
474 if (is_desktop_window( win
)) detach_window_thread( win
);
475 else destroy_window( win
);
479 /* get the desktop window */
480 static struct window
*get_desktop_window( struct thread
*thread
, int create
)
482 struct window
*top_window
;
483 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
485 if (!desktop
) return NULL
;
487 if (!(top_window
= desktop
->top_window
) && create
)
489 if ((top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
491 detach_window_thread( top_window
);
492 top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
495 release_object( desktop
);
499 /* check whether child is a descendant of parent */
500 int is_child_window( user_handle_t parent
, user_handle_t child
)
502 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
503 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
505 if (!child_ptr
|| !parent_ptr
) return 0;
506 while (child_ptr
->parent
)
508 if (child_ptr
->parent
== parent_ptr
) return 1;
509 child_ptr
= child_ptr
->parent
;
514 /* check whether window is a top-level window */
515 int is_top_level_window( user_handle_t window
)
517 struct window
*win
= get_user_object( window
, USER_WINDOW
);
518 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
521 /* make a window active if possible */
522 int make_window_active( user_handle_t window
)
524 struct window
*owner
, *win
= get_window( window
);
528 /* set last active for window and its owner */
529 win
->last_active
= win
->handle
;
530 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
534 /* increment (or decrement) the window paint count */
535 static inline void inc_window_paint_count( struct window
*win
, int incr
)
537 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
540 /* check if window and all its ancestors are visible */
541 static int is_visible( const struct window
*win
)
543 while (win
&& win
->parent
)
545 if (!(win
->style
& WS_VISIBLE
)) return 0;
547 /* if parent is minimized children are not visible */
548 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
553 /* same as is_visible but takes a window handle */
554 int is_window_visible( user_handle_t window
)
556 struct window
*win
= get_user_object( window
, USER_WINDOW
);
558 return is_visible( win
);
561 /* check if point is inside the window */
562 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
564 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
565 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
566 return 0; /* disabled child */
567 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
568 return 0; /* transparent */
569 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
570 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
571 return 0; /* not in window */
572 if (win
->win_region
&&
573 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
574 return 0; /* not in window region */
578 /* find child of 'parent' that contains the given point (in parent-relative coords) */
579 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
583 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
585 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
587 /* if window is minimized or disabled, return at once */
588 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
590 /* if point is not in client area, return at once */
591 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
592 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
595 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
597 return parent
; /* not found any child */
600 /* find all children of 'parent' that contain the given point */
601 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
602 struct user_handle_array
*array
)
606 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
608 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
610 /* if point is in client area, and window is not minimized or disabled, check children */
611 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
612 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
613 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
615 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
616 y
- ptr
->client_rect
.top
, array
))
620 /* now add window to the array */
621 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
626 /* find window containing point (in absolute coords) */
627 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
631 if (!desktop
->top_window
) return 0;
632 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
636 /* return list of all windows containing point (in absolute coords) */
637 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
641 /* make point relative to top window */
642 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
644 x
-= ptr
->client_rect
.left
;
645 y
-= ptr
->client_rect
.top
;
648 if (!is_point_in_window( top
, x
, y
)) return 1;
650 /* if point is in client area, and window is not minimized or disabled, check children */
651 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
652 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
653 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
655 if (!is_desktop_window(top
))
657 x
-= top
->client_rect
.left
;
658 y
-= top
->client_rect
.top
;
660 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
662 /* now add window to the array */
663 if (!add_handle_to_array( array
, top
->handle
)) return 0;
668 /* return the thread owning a window */
669 struct thread
*get_window_thread( user_handle_t handle
)
671 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
672 if (!win
|| !win
->thread
) return NULL
;
673 return (struct thread
*)grab_object( win
->thread
);
677 /* check if any area of a window needs repainting */
678 static inline int win_needs_repaint( struct window
*win
)
680 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
684 /* find a child of the specified window that needs repainting */
685 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
687 struct window
*ptr
, *ret
= NULL
;
689 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
691 if (!(ptr
->style
& WS_VISIBLE
)) continue;
692 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
694 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
695 ret
= find_child_to_repaint( ptr
, thread
);
699 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
701 /* transparent window, check for non-transparent sibling to paint first */
702 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
704 if (!(ptr
->style
& WS_VISIBLE
)) continue;
705 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
706 if (ptr
->thread
!= thread
) continue;
707 if (win_needs_repaint( ptr
)) return ptr
;
714 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
715 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
717 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
, 0 );
719 if (!top_window
) return 0;
721 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
722 else win
= find_child_to_repaint( top_window
, thread
);
726 /* check that it is a child of the specified parent */
727 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
728 if (ptr
->handle
== parent
) break;
729 /* otherwise don't return any window, we don't repaint a child before its parent */
730 if (!ptr
) win
= NULL
;
733 win
->paint_flags
&= ~PAINT_INTERNAL
;
738 /* intersect the window region with the specified region, relative to the window parent */
739 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
741 /* make region relative to window rect */
742 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
743 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
744 /* make region relative to parent again */
745 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
750 /* convert coordinates from client to screen coords */
751 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
753 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
755 *x
+= win
->client_rect
.left
;
756 *y
+= win
->client_rect
.top
;
760 /* convert coordinates from client to screen coords */
761 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
763 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
765 rect
->left
+= win
->client_rect
.left
;
766 rect
->right
+= win
->client_rect
.left
;
767 rect
->top
+= win
->client_rect
.top
;
768 rect
->bottom
+= win
->client_rect
.top
;
772 /* map the region from window to screen coordinates */
773 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
775 if (!is_desktop_window(win
))
777 int x
= win
->window_rect
.left
;
778 int y
= win
->window_rect
.top
;
779 client_to_screen( win
->parent
, &x
, &y
);
780 offset_region( region
, x
, y
);
785 /* clip all children of a given window out of the visible region */
786 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
787 struct region
*region
, int offset_x
, int offset_y
)
790 struct region
*tmp
= create_empty_region();
792 if (!tmp
) return NULL
;
793 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
795 if (ptr
== last
) break;
796 if (!(ptr
->style
& WS_VISIBLE
)) continue;
797 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
798 set_region_rect( tmp
, &ptr
->visible_rect
);
799 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
804 offset_region( tmp
, offset_x
, offset_y
);
805 if (!(region
= subtract_region( region
, region
, tmp
))) break;
806 if (is_region_empty( region
)) break;
813 /* compute the intersection of two rectangles; return 0 if the result is empty */
814 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
816 dst
->left
= max( src1
->left
, src2
->left
);
817 dst
->top
= max( src1
->top
, src2
->top
);
818 dst
->right
= min( src1
->right
, src2
->right
);
819 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
820 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
824 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
825 static void set_region_client_rect( struct region
*region
, struct window
*win
)
829 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
830 set_region_rect( region
, &rect
);
834 /* get the top-level window to clip against for a given window */
835 static inline struct window
*get_top_clipping_window( struct window
*win
)
837 while (win
->parent
&& !is_desktop_window(win
->parent
)) win
= win
->parent
;
842 /* compute the visible region of a window, in window coordinates */
843 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
845 struct region
*tmp
= NULL
, *region
;
846 int offset_x
, offset_y
;
848 if (!(region
= create_empty_region())) return NULL
;
850 /* first check if all ancestors are visible */
852 if (!is_visible( win
)) return region
; /* empty region */
854 /* create a region relative to the window itself */
856 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
858 set_region_client_rect( region
, win
->parent
);
859 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
861 else if (flags
& DCX_WINDOW
)
863 set_region_rect( region
, &win
->visible_rect
);
864 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
868 set_region_client_rect( region
, win
);
869 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
874 if (flags
& DCX_CLIPCHILDREN
)
876 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
879 offset_x
= win
->client_rect
.left
;
880 offset_y
= win
->client_rect
.top
;
882 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
885 /* clip siblings of ancestors */
887 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
890 offset_x
= win
->window_rect
.left
;
891 offset_y
= win
->window_rect
.top
;
894 if ((tmp
= create_empty_region()) != NULL
)
898 /* we don't clip out top-level siblings as that's up to the native windowing system */
899 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
901 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
902 if (is_region_empty( region
)) break;
904 /* clip to parent client area */
906 if (!is_desktop_window(win
))
908 offset_x
+= win
->client_rect
.left
;
909 offset_y
+= win
->client_rect
.top
;
910 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
912 set_region_client_rect( tmp
, win
);
913 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
914 if (!intersect_region( region
, region
, tmp
)) goto error
;
915 if (is_region_empty( region
)) break;
919 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
923 if (tmp
) free_region( tmp
);
924 free_region( region
);
929 /* get the window class of a window */
930 struct window_class
* get_window_class( user_handle_t window
)
933 if (!(win
= get_window( window
))) return NULL
;
934 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
938 /* return a copy of the specified region cropped to the window client or frame rectangle, */
939 /* and converted from client to window coordinates. Helper for (in)validate_window. */
940 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
942 struct region
*tmp
= create_empty_region();
944 if (!tmp
) return NULL
;
946 /* get bounding rect in client coords */
947 if (frame
) set_region_rect( tmp
, &win
->window_rect
);
948 else set_region_client_rect( tmp
, win
);
949 if (!is_desktop_window(win
))
950 offset_region( tmp
, -win
->client_rect
.left
, -win
->client_rect
.top
);
952 /* intersect specified region with bounding rect */
953 if (region
&& !intersect_region( tmp
, region
, tmp
)) goto done
;
954 if (is_region_empty( tmp
)) goto done
;
956 /* map it to window coords */
957 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
958 win
->client_rect
.top
- win
->window_rect
.top
);
967 /* set a region as new update region for the window */
968 static void set_update_region( struct window
*win
, struct region
*region
)
970 if (region
&& !is_region_empty( region
))
972 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
973 else free_region( win
->update_region
);
974 win
->update_region
= region
;
978 if (win
->update_region
)
980 inc_window_paint_count( win
, -1 );
981 free_region( win
->update_region
);
983 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
984 win
->update_region
= NULL
;
985 if (region
) free_region( region
);
990 /* add a region to the update region; the passed region is freed or reused */
991 static int add_update_region( struct window
*win
, struct region
*region
)
993 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
995 free_region( region
);
998 set_update_region( win
, region
);
1003 /* validate the non client area of a window */
1004 static void validate_non_client( struct window
*win
)
1009 if (!win
->update_region
) return; /* nothing to do */
1011 /* get client rect in window coords */
1012 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1013 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1014 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1015 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1017 if ((tmp
= create_empty_region()))
1019 set_region_rect( tmp
, &rect
);
1020 if (intersect_region( tmp
, win
->update_region
, tmp
))
1021 set_update_region( win
, tmp
);
1025 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1029 /* validate a window completely so that we don't get any further paint messages for it */
1030 static void validate_whole_window( struct window
*win
)
1032 set_update_region( win
, NULL
);
1034 if (win
->paint_flags
& PAINT_INTERNAL
)
1036 win
->paint_flags
&= ~PAINT_INTERNAL
;
1037 inc_window_paint_count( win
, -1 );
1042 /* validate a window's children so that we don't get any further paint messages for it */
1043 static void validate_children( struct window
*win
)
1045 struct window
*child
;
1047 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1049 if (!(child
->style
& WS_VISIBLE
)) continue;
1050 validate_children(child
);
1051 validate_whole_window(child
);
1056 /* validate the update region of a window on all parents; helper for get_update_region */
1057 static void validate_parents( struct window
*child
)
1059 int offset_x
= 0, offset_y
= 0;
1060 struct window
*win
= child
;
1061 struct region
*tmp
= NULL
;
1063 if (!child
->update_region
) return;
1067 /* map to parent client coords */
1068 offset_x
+= win
->window_rect
.left
;
1069 offset_y
+= win
->window_rect
.top
;
1073 /* and now map to window coords */
1074 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1075 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1077 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1079 if (!tmp
&& !(tmp
= create_empty_region())) return;
1080 offset_region( child
->update_region
, offset_x
, offset_y
);
1081 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1083 set_update_region( win
, tmp
);
1086 /* restore child coords */
1087 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1090 if (tmp
) free_region( tmp
);
1094 /* add/subtract a region (in client coordinates) to the update region of the window */
1095 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1098 struct window
*child
;
1100 if (flags
& RDW_INVALIDATE
)
1102 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1104 if (!add_update_region( win
, tmp
)) return;
1106 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1107 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1109 else if (flags
& RDW_VALIDATE
)
1111 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1113 set_update_region( win
, NULL
);
1115 else if (win
->update_region
)
1117 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1119 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1124 set_update_region( win
, tmp
);
1126 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1127 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1131 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1133 win
->paint_flags
|= PAINT_INTERNAL
;
1134 inc_window_paint_count( win
, 1 );
1136 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1138 win
->paint_flags
&= ~PAINT_INTERNAL
;
1139 inc_window_paint_count( win
, -1 );
1142 /* now process children recursively */
1144 if (flags
& RDW_NOCHILDREN
) return;
1145 if (win
->style
& WS_MINIMIZE
) return;
1146 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1148 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1150 /* map to client coordinates */
1151 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1152 win
->window_rect
.top
- win
->client_rect
.top
);
1154 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1156 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1158 if (!(child
->style
& WS_VISIBLE
)) continue;
1159 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1160 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1161 redraw_window( child
, tmp
, 1, flags
);
1162 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1168 /* retrieve the update flags for a window depending on the state of the update region */
1169 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1171 unsigned int ret
= 0;
1173 if (flags
& UPDATE_NONCLIENT
)
1175 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1177 if (flags
& UPDATE_ERASE
)
1179 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1181 if (flags
& UPDATE_PAINT
)
1183 if (win
->update_region
)
1185 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1186 ret
|= UPDATE_PAINT
;
1189 if (flags
& UPDATE_INTERNALPAINT
)
1191 if (win
->paint_flags
& PAINT_INTERNAL
)
1193 ret
|= UPDATE_INTERNALPAINT
;
1194 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1201 /* iterate through the children of the given window until we find one with some update flags */
1202 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1203 unsigned int flags
, struct window
**child
)
1206 unsigned int ret
= 0;
1208 /* first make sure we want to iterate children at all */
1210 if (win
->style
& WS_MINIMIZE
) return 0;
1212 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1213 * here we only want to repaint children of windows that clip them, others
1214 * need to wait for WM_PAINT to be done in the parent first.
1216 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1218 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1220 if (from_child
) /* skip all children until from_child is found */
1222 if (ptr
== from_child
) from_child
= NULL
;
1225 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1226 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1231 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1236 /* iterate through children and siblings of the given window until we find one with some update flags */
1237 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1238 unsigned int flags
, struct window
**child
)
1241 struct window
*ptr
, *from_sibling
= NULL
;
1243 /* if some parent is not visible start from the next sibling */
1245 if (!is_visible( win
)) return 0;
1246 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1248 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1249 if (ptr
== win
) break;
1252 /* non-client painting must be delayed if one of the parents is going to
1253 * be repainted and doesn't clip children */
1255 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1257 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1259 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1262 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1264 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1266 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1267 if (ptr
== win
) break;
1273 /* check window itself (only if not restarting from a child) */
1277 if ((ret
= get_update_flags( win
, flags
)))
1285 /* now check children */
1287 if (flags
& UPDATE_NOCHILDREN
) return 0;
1290 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1291 from_sibling
= from_child
;
1294 /* then check siblings and parent siblings */
1296 while (from_sibling
->parent
&& from_sibling
!= win
)
1298 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1300 from_sibling
= from_sibling
->parent
;
1306 /* expose the areas revealed by a vis region change on the window parent */
1307 /* returns the region exposed on the window itself (in client coordinates) */
1308 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1309 struct region
*old_vis_rgn
)
1311 struct window
*parent
= win
;
1312 struct region
*new_vis_rgn
, *exposed_rgn
;
1314 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1316 if ((exposed_rgn
= create_empty_region()))
1318 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1320 /* make it relative to the new client area */
1321 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1322 win
->window_rect
.top
- win
->client_rect
.top
);
1326 free_region( exposed_rgn
);
1331 /* make it relative to the old window pos for subtracting */
1332 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1333 win
->window_rect
.top
- old_window_rect
->top
);
1335 if (subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) && !is_region_empty( new_vis_rgn
))
1337 /* make it relative to new client rect again */
1338 int offset_x
= old_window_rect
->left
- win
->client_rect
.left
;
1339 int offset_y
= old_window_rect
->top
- win
->client_rect
.top
;
1340 if (win
->parent
&& !is_desktop_window(win
->parent
))
1342 offset_x
+= win
->client_rect
.left
;
1343 offset_y
+= win
->client_rect
.top
;
1344 parent
= win
->parent
;
1346 offset_region( new_vis_rgn
, offset_x
, offset_y
);
1347 redraw_window( parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1349 free_region( new_vis_rgn
);
1354 /* set the window and client rectangles, updating the update region if necessary */
1355 static void set_window_pos( struct window
*win
, struct window
*previous
,
1356 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1357 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1358 const rectangle_t
*valid_rects
)
1360 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1361 const rectangle_t old_window_rect
= win
->window_rect
;
1362 const rectangle_t old_visible_rect
= win
->visible_rect
;
1363 const rectangle_t old_client_rect
= win
->client_rect
;
1364 int client_changed
, frame_changed
;
1365 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1367 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1369 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1371 /* set the new window info before invalidating anything */
1373 win
->window_rect
= *window_rect
;
1374 win
->visible_rect
= *visible_rect
;
1375 win
->client_rect
= *client_rect
;
1376 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
)
1378 list_remove( &win
->entry
); /* unlink it from the previous location */
1379 if (previous
) list_add_after( &previous
->entry
, &win
->entry
);
1380 else list_add_head( &win
->parent
->children
, &win
->entry
);
1382 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1383 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1385 /* if the window is not visible, everything is easy */
1386 if (!visible
) return;
1388 /* expose anything revealed by the change */
1390 if (!(swp_flags
& SWP_NOREDRAW
))
1391 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1393 if (!(win
->style
& WS_VISIBLE
))
1395 /* clear the update region since the window is no longer visible */
1396 validate_whole_window( win
);
1397 validate_children( win
);
1401 /* crop update region to the new window rect */
1403 if (win
->update_region
&&
1404 (window_rect
->right
- window_rect
->left
< old_window_rect
.right
- old_window_rect
.left
||
1405 window_rect
->bottom
- window_rect
->top
< old_window_rect
.bottom
- old_window_rect
.top
))
1407 struct region
*tmp
= create_empty_region();
1410 set_region_rect( tmp
, window_rect
);
1411 if (!is_desktop_window(win
))
1412 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1413 if (intersect_region( tmp
, win
->update_region
, tmp
))
1414 set_update_region( win
, tmp
);
1420 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1422 /* expose the whole non-client area if it changed in any way */
1424 if (swp_flags
& SWP_NOCOPYBITS
)
1426 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1427 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1428 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1429 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1433 /* assume the bits have been moved to follow the window rect */
1434 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1435 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1436 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1437 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1438 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1439 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1440 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1441 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1442 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1443 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1444 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1445 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1446 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
);
1449 if (frame_changed
|| client_changed
)
1451 struct region
*tmp
= create_empty_region();
1455 /* subtract the valid portion of client rect from the total region */
1456 if (!client_changed
)
1457 set_region_rect( tmp
, client_rect
);
1458 else if (valid_rects
)
1459 set_region_rect( tmp
, &valid_rects
[0] );
1461 set_region_rect( old_vis_rgn
, window_rect
);
1462 if (!subtract_region( tmp
, old_vis_rgn
, tmp
)) free_region( tmp
);
1465 if (!is_desktop_window(win
))
1466 offset_region( tmp
, -client_rect
->left
, -client_rect
->top
);
1469 union_region( exposed_rgn
, exposed_rgn
, tmp
);
1472 else exposed_rgn
= tmp
;
1478 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1481 free_region( old_vis_rgn
);
1482 if (exposed_rgn
) free_region( exposed_rgn
);
1483 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1487 /* set the window region, updating the update region if necessary */
1488 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1490 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1492 /* no need to redraw if window is not visible */
1493 if (redraw
&& !is_visible( win
)) redraw
= 0;
1495 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1497 if (win
->win_region
) free_region( win
->win_region
);
1498 win
->win_region
= region
;
1500 /* expose anything revealed by the change */
1501 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1503 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1504 free_region( exposed_rgn
);
1507 if (old_vis_rgn
) free_region( old_vis_rgn
);
1508 clear_error(); /* we ignore out of memory errors since the region has been set */
1512 /* create a window */
1513 DECL_HANDLER(create_window
)
1515 struct window
*win
, *parent
, *owner
= NULL
;
1519 if (!req
->parent
) parent
= get_desktop_window( current
, 0 );
1520 else if (!(parent
= get_window( req
->parent
))) return;
1524 if (!(owner
= get_window( req
->owner
))) return;
1525 if (is_desktop_window(owner
)) owner
= NULL
;
1526 else if (!is_desktop_window(parent
))
1528 /* an owned window must be created as top-level */
1529 set_error( STATUS_ACCESS_DENIED
);
1532 else /* owner must be a top-level window */
1533 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1535 if (!(win
= create_window( parent
, owner
, req
->atom
, req
->instance
))) return;
1537 reply
->handle
= win
->handle
;
1538 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1539 reply
->owner
= win
->owner
;
1540 reply
->extra
= win
->nb_extra_bytes
;
1541 reply
->class_ptr
= get_class_client_ptr( win
->class );
1545 /* set the parent of a window */
1546 DECL_HANDLER(set_parent
)
1548 struct window
*win
, *parent
= NULL
;
1550 if (!(win
= get_window( req
->handle
))) return;
1551 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1553 if (is_desktop_window(win
))
1555 set_error( STATUS_INVALID_PARAMETER
);
1558 reply
->old_parent
= win
->parent
->handle
;
1559 reply
->full_parent
= parent
? parent
->handle
: 0;
1560 set_parent_window( win
, parent
);
1564 /* destroy a window */
1565 DECL_HANDLER(destroy_window
)
1567 struct window
*win
= get_window( req
->handle
);
1570 if (!is_desktop_window(win
)) destroy_window( win
);
1571 else if (win
->thread
== current
) detach_window_thread( win
);
1572 else set_error( STATUS_ACCESS_DENIED
);
1577 /* retrieve the desktop window for the current thread */
1578 DECL_HANDLER(get_desktop_window
)
1580 struct window
*win
= get_desktop_window( current
, req
->force
);
1582 if (win
) reply
->handle
= win
->handle
;
1586 /* set a window owner */
1587 DECL_HANDLER(set_window_owner
)
1589 struct window
*win
= get_window( req
->handle
);
1590 struct window
*owner
= NULL
;
1593 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1594 if (is_desktop_window(win
))
1596 set_error( STATUS_ACCESS_DENIED
);
1599 reply
->prev_owner
= win
->owner
;
1600 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1604 /* get information from a window handle */
1605 DECL_HANDLER(get_window_info
)
1607 struct window
*win
= get_window( req
->handle
);
1609 reply
->full_handle
= 0;
1610 reply
->tid
= reply
->pid
= 0;
1613 reply
->full_handle
= win
->handle
;
1614 reply
->last_active
= win
->handle
;
1615 reply
->is_unicode
= win
->is_unicode
;
1616 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1619 reply
->tid
= get_thread_id( win
->thread
);
1620 reply
->pid
= get_process_id( win
->thread
->process
);
1621 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
1627 /* set some information in a window */
1628 DECL_HANDLER(set_window_info
)
1630 struct window
*win
= get_window( req
->handle
);
1633 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
1635 set_error( STATUS_ACCESS_DENIED
);
1638 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1639 req
->extra_offset
< -1 ||
1640 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1642 set_win32_error( ERROR_INVALID_INDEX
);
1645 if (req
->extra_offset
!= -1)
1647 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1649 else if (req
->flags
& SET_WIN_EXTRA
)
1651 set_win32_error( ERROR_INVALID_INDEX
);
1654 reply
->old_style
= win
->style
;
1655 reply
->old_ex_style
= win
->ex_style
;
1656 reply
->old_id
= win
->id
;
1657 reply
->old_instance
= win
->instance
;
1658 reply
->old_user_data
= win
->user_data
;
1659 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1660 if (req
->flags
& SET_WIN_EXSTYLE
) win
->ex_style
= req
->ex_style
;
1661 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1662 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1663 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
1664 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1665 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1666 &req
->extra_value
, req
->extra_size
);
1668 /* changing window style triggers a non-client paint */
1669 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1673 /* get a list of the window parents, up to the root of the tree */
1674 DECL_HANDLER(get_window_parents
)
1676 struct window
*ptr
, *win
= get_window( req
->handle
);
1678 user_handle_t
*data
;
1681 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1683 reply
->count
= total
;
1684 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1685 if (len
&& ((data
= set_reply_data_size( len
))))
1687 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1688 *data
++ = ptr
->handle
;
1693 /* get a list of the window children */
1694 DECL_HANDLER(get_window_children
)
1696 struct window
*ptr
, *parent
= get_window( req
->parent
);
1698 user_handle_t
*data
;
1703 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1705 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1706 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1710 reply
->count
= total
;
1711 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1712 if (len
&& ((data
= set_reply_data_size( len
))))
1714 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1716 if (len
< sizeof(*data
)) break;
1717 if (req
->atom
&& get_class_atom(ptr
->class) != req
->atom
) continue;
1718 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1719 *data
++ = ptr
->handle
;
1720 len
-= sizeof(*data
);
1726 /* get a list of the window children that contain a given point */
1727 DECL_HANDLER(get_window_children_from_point
)
1729 struct user_handle_array array
;
1730 struct window
*parent
= get_window( req
->parent
);
1733 if (!parent
) return;
1735 array
.handles
= NULL
;
1738 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1740 reply
->count
= array
.count
;
1741 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1742 if (len
) set_reply_data_ptr( array
.handles
, len
);
1743 else free( array
.handles
);
1747 /* get window tree information from a window handle */
1748 DECL_HANDLER(get_window_tree
)
1750 struct window
*ptr
, *win
= get_window( req
->handle
);
1756 reply
->next_sibling
= 0;
1757 reply
->prev_sibling
= 0;
1758 reply
->first_sibling
= 0;
1759 reply
->last_sibling
= 0;
1760 reply
->first_child
= 0;
1761 reply
->last_child
= 0;
1765 struct window
*parent
= win
->parent
;
1766 reply
->parent
= parent
->handle
;
1767 reply
->owner
= win
->owner
;
1768 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
1769 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
1770 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
1771 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
1773 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
1774 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
1778 /* set the position and Z order of a window */
1779 DECL_HANDLER(set_window_pos
)
1781 const rectangle_t
*visible_rect
= NULL
, *valid_rects
= NULL
;
1782 struct window
*previous
= NULL
;
1783 struct window
*win
= get_window( req
->handle
);
1784 unsigned int flags
= req
->flags
;
1787 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
1789 if (!(flags
& SWP_NOZORDER
))
1791 if (!req
->previous
) /* special case: HWND_TOP */
1793 if (get_first_child(win
->parent
) == win
) flags
|= SWP_NOZORDER
;
1795 else if (req
->previous
== (user_handle_t
)1) /* special case: HWND_BOTTOM */
1797 previous
= get_last_child( win
->parent
);
1801 if (!(previous
= get_window( req
->previous
))) return;
1802 /* previous must be a sibling */
1803 if (previous
->parent
!= win
->parent
)
1805 set_error( STATUS_INVALID_PARAMETER
);
1809 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
1812 /* window rectangle must be ordered properly */
1813 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
1815 set_error( STATUS_INVALID_PARAMETER
);
1819 if (get_req_data_size() >= sizeof(rectangle_t
)) visible_rect
= get_req_data();
1820 if (get_req_data_size() >= 3 * sizeof(rectangle_t
)) valid_rects
= visible_rect
+ 1;
1822 if (!visible_rect
) visible_rect
= &req
->window
;
1823 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, visible_rect
, valid_rects
);
1824 reply
->new_style
= win
->style
;
1828 /* get the window and client rectangles of a window */
1829 DECL_HANDLER(get_window_rectangles
)
1831 struct window
*win
= get_window( req
->handle
);
1835 reply
->window
= win
->window_rect
;
1836 reply
->visible
= win
->visible_rect
;
1837 reply
->client
= win
->client_rect
;
1842 /* get the window text */
1843 DECL_HANDLER(get_window_text
)
1845 struct window
*win
= get_window( req
->handle
);
1847 if (win
&& win
->text
)
1849 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
1850 if (len
> get_reply_max_size()) len
= get_reply_max_size();
1851 set_reply_data( win
->text
, len
);
1856 /* set the window text */
1857 DECL_HANDLER(set_window_text
)
1859 struct window
*win
= get_window( req
->handle
);
1864 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
1867 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
1868 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
1877 /* get the coordinates offset between two windows */
1878 DECL_HANDLER(get_windows_offset
)
1882 reply
->x
= reply
->y
= 0;
1885 if (!(win
= get_window( req
->from
))) return;
1886 while (win
&& !is_desktop_window(win
))
1888 reply
->x
+= win
->client_rect
.left
;
1889 reply
->y
+= win
->client_rect
.top
;
1895 if (!(win
= get_window( req
->to
))) return;
1896 while (win
&& !is_desktop_window(win
))
1898 reply
->x
-= win
->client_rect
.left
;
1899 reply
->y
-= win
->client_rect
.top
;
1906 /* get the visible region of a window */
1907 DECL_HANDLER(get_visible_region
)
1909 struct region
*region
;
1910 struct window
*top
, *win
= get_window( req
->window
);
1914 top
= get_top_clipping_window( win
);
1915 if ((region
= get_visible_region( win
, req
->flags
)))
1918 map_win_region_to_screen( win
, region
);
1919 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
1920 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1922 reply
->top_win
= top
->handle
;
1923 reply
->top_rect
= top
->visible_rect
;
1925 if (!is_desktop_window(win
))
1927 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
1928 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
1929 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
1933 reply
->win_rect
.left
= 0;
1934 reply
->win_rect
.top
= 0;
1935 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
1936 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
1941 /* get the window region */
1942 DECL_HANDLER(get_window_region
)
1944 struct window
*win
= get_window( req
->window
);
1948 if (win
->win_region
)
1950 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
1951 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
1956 /* set the window region */
1957 DECL_HANDLER(set_window_region
)
1959 struct region
*region
= NULL
;
1960 struct window
*win
= get_window( req
->window
);
1964 if (get_req_data_size()) /* no data means remove the region completely */
1966 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
1969 set_window_region( win
, region
, req
->redraw
);
1973 /* get a window update region */
1974 DECL_HANDLER(get_update_region
)
1977 unsigned int flags
= req
->flags
;
1978 struct window
*from_child
= NULL
;
1979 struct window
*win
= get_window( req
->window
);
1984 if (req
->from_child
)
1988 if (!(from_child
= get_window( req
->from_child
))) return;
1990 /* make sure from_child is a child of win */
1992 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
1995 set_error( STATUS_INVALID_PARAMETER
);
2000 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2002 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2003 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2006 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2007 reply
->child
= win
->handle
;
2009 if (flags
& UPDATE_NOREGION
) return;
2011 if (win
->update_region
)
2013 /* convert update region to screen coordinates */
2014 struct region
*region
= create_empty_region();
2016 if (!region
) return;
2017 if (!copy_region( region
, win
->update_region
))
2019 free_region( region
);
2022 map_win_region_to_screen( win
, region
);
2023 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2024 &reply
->total_size
))) return;
2025 set_reply_data_ptr( data
, reply
->total_size
);
2028 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2030 validate_parents( win
);
2031 validate_whole_window( win
);
2035 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2036 if (reply
->flags
& UPDATE_ERASE
)
2038 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2039 /* desktop window only gets erased, not repainted */
2040 if (is_desktop_window(win
)) validate_whole_window( win
);
2046 /* update the z order of a window so that a given rectangle is fully visible */
2047 DECL_HANDLER(update_window_zorder
)
2050 struct window
*ptr
, *win
= get_window( req
->window
);
2052 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2054 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2056 if (ptr
== win
) break;
2057 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2058 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2059 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
2060 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
2061 /* found a window obscuring the rectangle, now move win above this one */
2062 list_remove( &win
->entry
);
2063 list_add_before( &ptr
->entry
, &win
->entry
);
2069 /* mark parts of a window as needing a redraw */
2070 DECL_HANDLER(redraw_window
)
2072 struct region
*region
= NULL
;
2073 struct window
*win
= get_window( req
->window
);
2076 if (!is_visible( win
)) return; /* nothing to do */
2078 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2080 if (get_req_data_size()) /* no data means whole rectangle */
2082 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2087 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2089 if (region
) free_region( region
);
2093 /* set a window property */
2094 DECL_HANDLER(set_window_property
)
2096 struct window
*win
= get_window( req
->window
);
2100 if (get_req_data_size())
2102 atom_t atom
= add_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
2105 set_property( win
, atom
, req
->handle
, PROP_TYPE_STRING
);
2106 release_global_atom( NULL
, atom
);
2109 else set_property( win
, req
->atom
, req
->handle
, PROP_TYPE_ATOM
);
2113 /* remove a window property */
2114 DECL_HANDLER(remove_window_property
)
2116 struct window
*win
= get_window( req
->window
);
2120 atom_t atom
= req
->atom
;
2121 if (get_req_data_size()) atom
= find_global_atom( NULL
, get_req_data(),
2122 get_req_data_size() / sizeof(WCHAR
) );
2123 if (atom
) reply
->handle
= remove_property( win
, atom
);
2128 /* get a window property */
2129 DECL_HANDLER(get_window_property
)
2131 struct window
*win
= get_window( req
->window
);
2135 atom_t atom
= req
->atom
;
2136 if (get_req_data_size()) atom
= find_global_atom( NULL
, get_req_data(),
2137 get_req_data_size() / sizeof(WCHAR
) );
2138 if (atom
) reply
->handle
= get_property( win
, atom
);
2143 /* get the list of properties of a window */
2144 DECL_HANDLER(get_window_properties
)
2146 property_data_t
*data
;
2147 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2148 struct window
*win
= get_window( req
->window
);
2153 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2154 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2155 reply
->total
= count
;
2157 if (count
> max
) count
= max
;
2158 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2160 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2162 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2163 data
->atom
= win
->properties
[i
].atom
;
2164 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2165 data
->handle
= win
->properties
[i
].handle
;
2172 /* get the new window pointer for a global window, checking permissions */
2173 /* helper for set_global_windows request */
2174 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2183 set_error( STATUS_ACCESS_DENIED
);
2186 *win
= get_window( handle
);
2187 return (*win
!= NULL
);
2190 /* Set/get the global windows */
2191 DECL_HANDLER(set_global_windows
)
2193 struct window
*new_shell_window
= shell_window
;
2194 struct window
*new_shell_listview
= shell_listview
;
2195 struct window
*new_progman_window
= progman_window
;
2196 struct window
*new_taskman_window
= taskman_window
;
2198 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2199 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2200 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2201 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2203 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2205 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2206 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2208 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2210 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2212 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2214 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2216 shell_window
= new_shell_window
;
2217 shell_listview
= new_shell_listview
;
2218 progman_window
= new_progman_window
;
2219 taskman_window
= new_taskman_window
;