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 void* 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 */
95 /* growable array of user handles */
96 struct user_handle_array
98 user_handle_t *handles;
103 /* global window pointers */
104 static struct window *shell_window;
105 static struct window *shell_listview;
106 static struct window *progman_window;
107 static struct window *taskman_window;
109 /* retrieve a pointer to a window from its handle */
110 inline static struct window *get_window( user_handle_t handle )
112 struct window *ret = get_user_object( handle, USER_WINDOW );
113 if (!ret) set_error( STATUS_INVALID_HANDLE );
117 /* check if window is the desktop */
118 static inline int is_desktop_window( const struct window *win )
120 return !win->parent; /* only desktop windows have no parent */
123 /* change the parent of a window (or unlink the window if the new parent is NULL) */
124 static int set_parent_window( struct window *win, struct window *parent )
128 /* make sure parent is not a child of window */
129 for (ptr = parent; ptr; ptr = ptr->parent)
133 set_error( STATUS_INVALID_PARAMETER );
138 list_remove( &win->entry ); /* unlink it from the previous location */
142 win->parent = parent;
143 list_add_head( &parent->children, &win->entry );
145 /* if parent belongs to a different thread and the window isn't */
146 /* top-level, attach the two threads */
147 if (parent->thread && parent->thread != win->thread && !is_desktop_window(parent))
148 attach_thread_input( win->thread, parent->thread );
150 else /* move it to parent unlinked list */
152 list_add_head( &win->parent->unlinked, &win->entry );
157 /* get next window in Z-order list */
158 static inline struct window *get_next_window( struct window *win )
160 struct list *ptr = list_next( &win->parent->children, &win->entry );
161 if (ptr == &win->parent->unlinked) ptr = NULL;
162 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
165 /* get previous window in Z-order list */
166 static inline struct window *get_prev_window( struct window *win )
168 struct list *ptr = list_prev( &win->parent->children, &win->entry );
169 if (ptr == &win->parent->unlinked) ptr = NULL;
170 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
173 /* get first child in Z-order list */
174 static inline struct window *get_first_child( struct window *win )
176 struct list *ptr = list_head( &win->children );
177 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
180 /* get last child in Z-order list */
181 static inline struct window *get_last_child( struct window *win )
183 struct list *ptr = list_tail( &win->children );
184 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
187 /* append a user handle to a handle array */
188 static int add_handle_to_array( struct user_handle_array *array, user_handle_t handle )
190 if (array->count >= array->total)
192 int new_total = max( array->total * 2, 32 );
193 user_handle_t *new_array = realloc( array->handles, new_total * sizeof(*new_array) );
196 free( array->handles );
197 set_error( STATUS_NO_MEMORY );
200 array->handles = new_array;
201 array->total = new_total;
203 array->handles[array->count++] = handle;
207 /* set a window property */
208 static void set_property( struct window *win, atom_t atom, obj_handle_t handle, enum property_type type )
211 struct property *new_props;
213 /* check if it exists already */
214 for (i = 0; i < win->prop_inuse; i++)
216 if (win->properties[i].type == PROP_TYPE_FREE)
221 if (win->properties[i].atom == atom)
223 win->properties[i].type = type;
224 win->properties[i].handle = handle;
229 /* need to add an entry */
230 if (!grab_global_atom( NULL, atom )) return;
234 if (win->prop_inuse >= win->prop_alloc)
236 /* need to grow the array */
237 if (!(new_props = realloc( win->properties,
238 sizeof(*new_props) * (win->prop_alloc + 16) )))
240 set_error( STATUS_NO_MEMORY );
241 release_global_atom( NULL, atom );
244 win->prop_alloc += 16;
245 win->properties = new_props;
247 free = win->prop_inuse++;
249 win->properties[free].atom = atom;
250 win->properties[free].type = type;
251 win->properties[free].handle = handle;
254 /* remove a window property */
255 static obj_handle_t remove_property( struct window *win, atom_t atom )
259 for (i = 0; i < win->prop_inuse; i++)
261 if (win->properties[i].type == PROP_TYPE_FREE) continue;
262 if (win->properties[i].atom == atom)
264 release_global_atom( NULL, atom );
265 win->properties[i].type = PROP_TYPE_FREE;
266 return win->properties[i].handle;
269 /* FIXME: last error? */
273 /* find a window property */
274 static obj_handle_t get_property( struct window *win, atom_t atom )
278 for (i = 0; i < win->prop_inuse; i++)
280 if (win->properties[i].type == PROP_TYPE_FREE) continue;
281 if (win->properties[i].atom == atom) return win->properties[i].handle;
283 /* FIXME: last error? */
287 /* destroy all properties of a window */
288 inline static void destroy_properties( struct window *win )
292 if (!win->properties) return;
293 for (i = 0; i < win->prop_inuse; i++)
295 if (win->properties[i].type == PROP_TYPE_FREE) continue;
296 release_global_atom( NULL, win->properties[i].atom );
298 free( win->properties );
301 /* detach a window from its owner thread but keep the window around */
302 static void detach_window_thread( struct window *win )
304 struct thread *thread = win->thread;
309 if (win->update_region) inc_queue_paint_count( thread, -1 );
310 if (win->paint_flags & PAINT_INTERNAL) inc_queue_paint_count( thread, -1 );
311 queue_cleanup_window( thread, win->handle );
313 assert( thread->desktop_users > 0 );
314 thread->desktop_users--;
315 release_class( win->class );
318 /* don't hold a reference to the desktop so that the desktop window can be */
319 /* destroyed when the desktop ref count reaches zero */
320 release_object( win->desktop );
324 /* destroy a window */
325 void destroy_window( struct window *win )
327 /* destroy all children */
328 while (!list_empty(&win->children))
329 destroy_window( LIST_ENTRY( list_head(&win->children), struct window, entry ));
330 while (!list_empty(&win->unlinked))
331 destroy_window( LIST_ENTRY( list_head(&win->unlinked), struct window, entry ));
333 /* reset global window pointers, if the corresponding window is destroyed */
334 if (win == shell_window) shell_window = NULL;
335 if (win == shell_listview) shell_listview = NULL;
336 if (win == progman_window) progman_window = NULL;
337 if (win == taskman_window) taskman_window = NULL;
338 free_user_handle( win->handle );
339 destroy_properties( win );
340 list_remove( &win->entry );
341 if (is_desktop_window(win))
343 assert( win->desktop->top_window == win );
344 win->desktop->top_window = NULL;
346 detach_window_thread( win );
347 if (win->win_region) free_region( win->win_region );
348 if (win->update_region) free_region( win->update_region );
349 if (win->class) release_class( win->class );
350 if (win->text) free( win->text );
351 memset( win, 0x55, sizeof(*win) + win->nb_extra_bytes - 1 );
355 /* get the process owning the top window of a given desktop */
356 struct process *get_top_window_owner( struct desktop *desktop )
358 struct window *win = desktop->top_window;
359 if (!win || !win->thread) return NULL;
360 return win->thread->process;
363 /* attempt to close the desktop window when the last process using it is gone */
364 void close_desktop_window( struct desktop *desktop )
366 struct window *win = desktop->top_window;
367 if (win && win->thread) post_message( win->handle, WM_CLOSE, 0, 0 );
370 /* create a new window structure (note: the window is not linked in the window tree) */
371 static struct window *create_window( struct window *parent, struct window *owner,
372 atom_t atom, void *instance )
376 struct desktop *desktop;
377 struct window_class *class;
379 if (!(desktop = get_thread_desktop( current, DESKTOP_CREATEWINDOW ))) return NULL;
381 if (!(class = grab_class( current->process, atom, instance, &extra_bytes )))
383 release_object( desktop );
387 if (!(win = mem_alloc( sizeof(*win) + extra_bytes - 1 ))) goto failed;
388 if (!(win->handle = alloc_user_handle( win, USER_WINDOW ))) goto failed;
390 win->parent = parent;
391 win->owner = owner ? owner->handle : 0;
392 win->thread = current;
393 win->desktop = desktop;
396 win->last_active = win->handle;
397 win->win_region = NULL;
398 win->update_region = NULL;
402 win->instance = NULL;
404 win->user_data = NULL;
406 win->paint_flags = 0;
409 win->properties = NULL;
410 win->nb_extra_bytes = extra_bytes;
411 memset( win->extra_bytes, 0, extra_bytes );
412 list_init( &win->children );
413 list_init( &win->unlinked );
415 /* parent must be on the same desktop */
416 if (parent && parent->desktop != desktop)
418 set_error( STATUS_ACCESS_DENIED );
422 /* if no parent, class must be the desktop */
423 if (!parent && !is_desktop_class( class ))
425 set_error( STATUS_ACCESS_DENIED );
429 /* if parent belongs to a different thread and the window isn't */
430 /* top-level, attach the two threads */
431 if (parent && parent->thread && parent->thread != current && !is_desktop_window(parent))
433 if (!attach_thread_input( current, parent->thread )) goto failed;
435 else /* otherwise just make sure that the thread has a message queue */
437 if (!current->queue && !init_thread_queue( current )) goto failed;
440 /* put it on parent unlinked list */
441 if (parent) list_add_head( &parent->unlinked, &win->entry );
444 list_init( &win->entry );
445 assert( !desktop->top_window );
446 desktop->top_window = win;
447 set_process_default_desktop( current->process, desktop, current->desktop );
450 current->desktop_users++;
456 if (win->handle) free_user_handle( win->handle );
459 release_object( desktop );
460 release_class( class );
464 /* destroy all windows belonging to a given thread */
465 void destroy_thread_windows( struct thread *thread )
467 user_handle_t handle = 0;
470 while ((win = next_user_handle( &handle, USER_WINDOW )))
472 if (win->thread != thread) continue;
473 if (is_desktop_window( win )) detach_window_thread( win );
474 else destroy_window( win );
478 /* get the desktop window */
479 static struct window *get_desktop_window( struct thread *thread, int create )
481 struct window *top_window;
482 struct desktop *desktop = get_thread_desktop( thread, 0 );
484 if (!desktop) return NULL;
486 if (!(top_window = desktop->top_window) && create)
488 if ((top_window = create_window( NULL, NULL, DESKTOP_ATOM, 0 )))
490 detach_window_thread( top_window );
491 top_window->style = WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
494 release_object( desktop );
498 /* check whether child is a descendant of parent */
499 int is_child_window( user_handle_t parent, user_handle_t child )
501 struct window *child_ptr = get_user_object( child, USER_WINDOW );
502 struct window *parent_ptr = get_user_object( parent, USER_WINDOW );
504 if (!child_ptr || !parent_ptr) return 0;
505 while (child_ptr->parent)
507 if (child_ptr->parent == parent_ptr) return 1;
508 child_ptr = child_ptr->parent;
513 /* check whether window is a top-level window */
514 int is_top_level_window( user_handle_t window )
516 struct window *win = get_user_object( window, USER_WINDOW );
517 return (win && win->parent && is_desktop_window(win->parent));
520 /* make a window active if possible */
521 int make_window_active( user_handle_t window )
523 struct window *owner, *win = get_window( window );
527 /* set last active for window and its owner */
528 win->last_active = win->handle;
529 if ((owner = get_user_object( win->owner, USER_WINDOW ))) owner->last_active = win->handle;
533 /* increment (or decrement) the window paint count */
534 static inline void inc_window_paint_count( struct window *win, int incr )
536 if (win->thread) inc_queue_paint_count( win->thread, incr );
539 /* check if window and all its ancestors are visible */
540 static int is_visible( const struct window *win )
542 while (win && win->parent)
544 if (!(win->style & WS_VISIBLE)) return 0;
546 /* if parent is minimized children are not visible */
547 if (win && (win->style & WS_MINIMIZE)) return 0;
552 /* same as is_visible but takes a window handle */
553 int is_window_visible( user_handle_t window )
555 struct window *win = get_user_object( window, USER_WINDOW );
557 return is_visible( win );
560 /* check if point is inside the window */
561 static inline int is_point_in_window( struct window *win, int x, int y )
563 if (!(win->style & WS_VISIBLE)) return 0; /* not visible */
564 if ((win->style & (WS_POPUP|WS_CHILD|WS_DISABLED)) == (WS_CHILD|WS_DISABLED))
565 return 0; /* disabled child */
566 if ((win->ex_style & (WS_EX_LAYERED|WS_EX_TRANSPARENT)) == (WS_EX_LAYERED|WS_EX_TRANSPARENT))
567 return 0; /* transparent */
568 if (x < win->visible_rect.left || x >= win->visible_rect.right ||
569 y < win->visible_rect.top || y >= win->visible_rect.bottom)
570 return 0; /* not in window */
571 if (win->win_region &&
572 !point_in_region( win->win_region, x - win->window_rect.left, y - win->window_rect.top ))
573 return 0; /* not in window region */
577 /* find child of 'parent' that contains the given point (in parent-relative coords) */
578 static struct window *child_window_from_point( struct window *parent, int x, int y )
582 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
584 if (!is_point_in_window( ptr, x, y )) continue; /* skip it */
586 /* if window is minimized or disabled, return at once */
587 if (ptr->style & (WS_MINIMIZE|WS_DISABLED)) return ptr;
589 /* if point is not in client area, return at once */
590 if (x < ptr->client_rect.left || x >= ptr->client_rect.right ||
591 y < ptr->client_rect.top || y >= ptr->client_rect.bottom)
594 return child_window_from_point( ptr, x - ptr->client_rect.left, y - ptr->client_rect.top );
596 return parent; /* not found any child */
599 /* find all children of 'parent' that contain the given point */
600 static int get_window_children_from_point( struct window *parent, int x, int y,
601 struct user_handle_array *array )
605 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
607 if (!is_point_in_window( ptr, x, y )) continue; /* skip it */
609 /* if point is in client area, and window is not minimized or disabled, check children */
610 if (!(ptr->style & (WS_MINIMIZE|WS_DISABLED)) &&
611 x >= ptr->client_rect.left && x < ptr->client_rect.right &&
612 y >= ptr->client_rect.top && y < ptr->client_rect.bottom)
614 if (!get_window_children_from_point( ptr, x - ptr->client_rect.left,
615 y - ptr->client_rect.top, array ))
619 /* now add window to the array */
620 if (!add_handle_to_array( array, ptr->handle )) return 0;
625 /* find window containing point (in absolute coords) */
626 user_handle_t window_from_point( struct desktop *desktop, int x, int y )
630 if (!desktop->top_window) return 0;
631 ret = child_window_from_point( desktop->top_window, x, y );
635 /* return list of all windows containing point (in absolute coords) */
636 static int all_windows_from_point( struct window *top, int x, int y, struct user_handle_array *array )
640 /* make point relative to top window */
641 for (ptr = top->parent; ptr; ptr = ptr->parent)
643 x -= ptr->client_rect.left;
644 y -= ptr->client_rect.top;
647 if (!is_point_in_window( top, x, y )) return 1;
649 /* if point is in client area, and window is not minimized or disabled, check children */
650 if (!(top->style & (WS_MINIMIZE|WS_DISABLED)) &&
651 x >= top->client_rect.left && x < top->client_rect.right &&
652 y >= top->client_rect.top && y < top->client_rect.bottom)
654 if (!get_window_children_from_point( top, x - top->client_rect.left,
655 y - top->client_rect.top, array ))
658 /* now add window to the array */
659 if (!add_handle_to_array( array, top->handle )) return 0;
664 /* return the thread owning a window */
665 struct thread *get_window_thread( user_handle_t handle )
667 struct window *win = get_user_object( handle, USER_WINDOW );
668 if (!win || !win->thread) return NULL;
669 return (struct thread *)grab_object( win->thread );
673 /* check if any area of a window needs repainting */
674 static inline int win_needs_repaint( struct window *win )
676 return win->update_region || (win->paint_flags & PAINT_INTERNAL);
680 /* find a child of the specified window that needs repainting */
681 static struct window *find_child_to_repaint( struct window *parent, struct thread *thread )
683 struct window *ptr, *ret = NULL;
685 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
687 if (!(ptr->style & WS_VISIBLE)) continue;
688 if (ptr->thread == thread && win_needs_repaint( ptr ))
690 else if (!(ptr->style & WS_MINIMIZE)) /* explore its children */
691 ret = find_child_to_repaint( ptr, thread );
695 if (ret && (ret->ex_style & WS_EX_TRANSPARENT))
697 /* transparent window, check for non-transparent sibling to paint first */
698 for (ptr = get_next_window(ret); ptr; ptr = get_next_window(ptr))
700 if (!(ptr->style & WS_VISIBLE)) continue;
701 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
702 if (ptr->thread != thread) continue;
703 if (win_needs_repaint( ptr )) return ptr;
710 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
711 user_handle_t find_window_to_repaint( user_handle_t parent, struct thread *thread )
713 struct window *ptr, *win, *top_window = get_desktop_window( thread, 0 );
715 if (!top_window) return 0;
717 if (top_window->thread == thread && win_needs_repaint( top_window )) win = top_window;
718 else win = find_child_to_repaint( top_window, thread );
722 /* check that it is a child of the specified parent */
723 for (ptr = win; ptr; ptr = ptr->parent)
724 if (ptr->handle == parent) break;
725 /* otherwise don't return any window, we don't repaint a child before its parent */
726 if (!ptr) win = NULL;
729 win->paint_flags &= ~PAINT_INTERNAL;
734 /* intersect the window region with the specified region, relative to the window parent */
735 static struct region *intersect_window_region( struct region *region, struct window *win )
737 /* make region relative to window rect */
738 offset_region( region, -win->window_rect.left, -win->window_rect.top );
739 if (!intersect_region( region, region, win->win_region )) return NULL;
740 /* make region relative to parent again */
741 offset_region( region, win->window_rect.left, win->window_rect.top );
746 /* convert coordinates from client to screen coords */
747 static inline void client_to_screen( struct window *win, int *x, int *y )
749 for ( ; win; win = win->parent)
751 *x += win->client_rect.left;
752 *y += win->client_rect.top;
756 /* map the region from window to screen coordinates */
757 static inline void map_win_region_to_screen( struct window *win, struct region *region )
759 int x = win->window_rect.left;
760 int y = win->window_rect.top;
761 client_to_screen( win->parent, &x, &y );
762 offset_region( region, x, y );
766 /* clip all children of a given window out of the visible region */
767 static struct region *clip_children( struct window *parent, struct window *last,
768 struct region *region, int offset_x, int offset_y )
771 struct region *tmp = create_empty_region();
773 if (!tmp) return NULL;
774 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
776 if (ptr == last) break;
777 if (!(ptr->style & WS_VISIBLE)) continue;
778 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
779 set_region_rect( tmp, &ptr->visible_rect );
780 if (ptr->win_region && !intersect_window_region( tmp, ptr ))
785 offset_region( tmp, offset_x, offset_y );
786 if (!(region = subtract_region( region, region, tmp ))) break;
787 if (is_region_empty( region )) break;
794 /* compute the intersection of two rectangles; return 0 if the result is empty */
795 static inline int intersect_rect( rectangle_t *dst, const rectangle_t *src1, const rectangle_t *src2 )
797 dst->left = max( src1->left, src2->left );
798 dst->top = max( src1->top, src2->top );
799 dst->right = min( src1->right, src2->right );
800 dst->bottom = min( src1->bottom, src2->bottom );
801 return (dst->left < dst->right && dst->top < dst->bottom);
805 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
806 static void set_region_client_rect( struct region *region, struct window *win )
810 intersect_rect( &rect, &win->window_rect, &win->client_rect );
811 set_region_rect( region, &rect );
815 /* get the top-level window to clip against for a given window */
816 static inline struct window *get_top_clipping_window( struct window *win )
818 while (win->parent && !is_desktop_window(win->parent)) win = win->parent;
823 /* compute the visible region of a window, in window coordinates */
824 static struct region *get_visible_region( struct window *win, struct window *top, unsigned int flags )
826 struct region *tmp = NULL, *region;
827 int offset_x, offset_y;
829 if (!(region = create_empty_region())) return NULL;
831 /* first check if all ancestors are visible */
833 if (!is_visible( win )) return region; /* empty region */
835 /* create a region relative to the window itself */
837 if ((flags & DCX_PARENTCLIP) && win != top && win->parent)
839 set_region_client_rect( region, win->parent );
840 offset_region( region, -win->parent->client_rect.left, -win->parent->client_rect.top );
842 else if (flags & DCX_WINDOW)
844 set_region_rect( region, &win->visible_rect );
845 if (win->win_region && !intersect_window_region( region, win )) goto error;
849 set_region_client_rect( region, win );
850 if (win->win_region && !intersect_window_region( region, win )) goto error;
852 offset_x = win->window_rect.left;
853 offset_y = win->window_rect.top;
857 if (flags & DCX_CLIPCHILDREN)
859 if (!clip_children( win, NULL, region, win->client_rect.left, win->client_rect.top ))
863 /* clip siblings of ancestors */
865 if (top && top != win && (tmp = create_empty_region()) != NULL)
867 while (win != top && win->parent)
869 if (win->style & WS_CLIPSIBLINGS)
871 if (!clip_children( win->parent, win, region, 0, 0 )) goto error;
872 if (is_region_empty( region )) break;
874 /* clip to parent client area */
876 offset_x += win->client_rect.left;
877 offset_y += win->client_rect.top;
878 offset_region( region, win->client_rect.left, win->client_rect.top );
879 set_region_client_rect( tmp, win );
880 if (win->win_region && !intersect_window_region( tmp, win )) goto error;
881 if (!intersect_region( region, region, tmp )) goto error;
882 if (is_region_empty( region )) break;
886 offset_region( region, -offset_x, -offset_y ); /* make it relative to target window */
890 if (tmp) free_region( tmp );
891 free_region( region );
896 /* get the window class of a window */
897 struct window_class* get_window_class( user_handle_t window )
900 if (!(win = get_window( window ))) return NULL;
901 if (!win->class) set_error( STATUS_ACCESS_DENIED );
905 /* return a copy of the specified region cropped to the window client or frame rectangle, */
906 /* and converted from client to window coordinates. Helper for (in)validate_window. */
907 static struct region *crop_region_to_win_rect( struct window *win, struct region *region, int frame )
909 struct region *tmp = create_empty_region();
911 if (!tmp) return NULL;
913 /* get bounding rect in client coords */
914 if (frame) set_region_rect( tmp, &win->window_rect );
915 else set_region_client_rect( tmp, win );
916 offset_region( tmp, -win->client_rect.left, -win->client_rect.top );
918 /* intersect specified region with bounding rect */
919 if (region && !intersect_region( tmp, region, tmp )) goto done;
920 if (is_region_empty( tmp )) goto done;
922 /* map it to window coords */
923 offset_region( tmp, win->client_rect.left - win->window_rect.left,
924 win->client_rect.top - win->window_rect.top );
933 /* set a region as new update region for the window */
934 static void set_update_region( struct window *win, struct region *region )
936 if (region && !is_region_empty( region ))
938 if (!win->update_region) inc_window_paint_count( win, 1 );
939 else free_region( win->update_region );
940 win->update_region = region;
944 if (win->update_region)
946 inc_window_paint_count( win, -1 );
947 free_region( win->update_region );
949 win->paint_flags &= ~(PAINT_ERASE | PAINT_NONCLIENT);
950 win->update_region = NULL;
951 if (region) free_region( region );
956 /* add a region to the update region; the passed region is freed or reused */
957 static int add_update_region( struct window *win, struct region *region )
959 if (win->update_region && !union_region( region, win->update_region, region ))
961 free_region( region );
964 set_update_region( win, region );
969 /* validate the non client area of a window */
970 static void validate_non_client( struct window *win )
975 if (!win->update_region) return; /* nothing to do */
977 /* get client rect in window coords */
978 rect.left = win->client_rect.left - win->window_rect.left;
979 rect.top = win->client_rect.top - win->window_rect.top;
980 rect.right = win->client_rect.right - win->window_rect.left;
981 rect.bottom = win->client_rect.bottom - win->window_rect.top;
983 if ((tmp = create_empty_region()))
985 set_region_rect( tmp, &rect );
986 if (intersect_region( tmp, win->update_region, tmp ))
987 set_update_region( win, tmp );
991 win->paint_flags &= ~PAINT_NONCLIENT;
995 /* validate a window completely so that we don't get any further paint messages for it */
996 static void validate_whole_window( struct window *win )
998 set_update_region( win, NULL );
1000 if (win->paint_flags & PAINT_INTERNAL)
1002 win->paint_flags &= ~PAINT_INTERNAL;
1003 inc_window_paint_count( win, -1 );
1008 /* validate the update region of a window on all parents; helper for redraw_window */
1009 static void validate_parents( struct window *child )
1011 int offset_x = 0, offset_y = 0;
1012 struct window *win = child;
1013 struct region *tmp = NULL;
1015 if (!child->update_region) return;
1019 /* map to parent client coords */
1020 offset_x += win->window_rect.left;
1021 offset_y += win->window_rect.top;
1025 /* and now map to window coords */
1026 offset_x += win->client_rect.left - win->window_rect.left;
1027 offset_y += win->client_rect.top - win->window_rect.top;
1029 if (win->update_region && !(win->style & WS_CLIPCHILDREN))
1031 if (!tmp && !(tmp = create_empty_region())) return;
1032 offset_region( child->update_region, offset_x, offset_y );
1033 if (subtract_region( tmp, win->update_region, child->update_region ))
1035 set_update_region( win, tmp );
1038 /* restore child coords */
1039 offset_region( child->update_region, -offset_x, -offset_y );
1042 if (tmp) free_region( tmp );
1046 /* add/subtract a region (in client coordinates) to the update region of the window */
1047 static void redraw_window( struct window *win, struct region *region, int frame, unsigned int flags )
1050 struct window *child;
1052 if (flags & RDW_INVALIDATE)
1054 if (!(tmp = crop_region_to_win_rect( win, region, frame ))) return;
1056 if (!add_update_region( win, tmp )) return;
1058 if (flags & RDW_FRAME) win->paint_flags |= PAINT_NONCLIENT;
1059 if (flags & RDW_ERASE) win->paint_flags |= PAINT_ERASE;
1061 else if (flags & RDW_VALIDATE)
1063 if (!region && (flags & RDW_NOFRAME)) /* shortcut: validate everything */
1065 set_update_region( win, NULL );
1067 else if (win->update_region)
1069 if ((tmp = crop_region_to_win_rect( win, region, frame )))
1071 if (!subtract_region( tmp, win->update_region, tmp ))
1076 set_update_region( win, tmp );
1078 if (flags & RDW_NOFRAME) validate_non_client( win );
1079 if (flags & RDW_NOERASE) win->paint_flags &= ~PAINT_ERASE;
1083 if ((flags & RDW_INTERNALPAINT) && !(win->paint_flags & PAINT_INTERNAL))
1085 win->paint_flags |= PAINT_INTERNAL;
1086 inc_window_paint_count( win, 1 );
1088 else if ((flags & RDW_NOINTERNALPAINT) && (win->paint_flags & PAINT_INTERNAL))
1090 win->paint_flags &= ~PAINT_INTERNAL;
1091 inc_window_paint_count( win, -1 );
1094 if (flags & RDW_UPDATENOW)
1096 validate_parents( win );
1097 flags &= ~RDW_UPDATENOW;
1100 /* now process children recursively */
1102 if (flags & RDW_NOCHILDREN) return;
1103 if (win->style & WS_MINIMIZE) return;
1104 if ((win->style & WS_CLIPCHILDREN) && !(flags & RDW_ALLCHILDREN)) return;
1106 if (!(tmp = crop_region_to_win_rect( win, region, 0 ))) return;
1108 /* map to client coordinates */
1109 offset_region( tmp, win->window_rect.left - win->client_rect.left,
1110 win->window_rect.top - win->client_rect.top );
1112 if (flags & RDW_INVALIDATE) flags |= RDW_FRAME | RDW_ERASE;
1114 LIST_FOR_EACH_ENTRY( child, &win->children, struct window, entry )
1116 if (!(child->style & WS_VISIBLE)) continue;
1117 if (!rect_in_region( tmp, &child->window_rect )) continue;
1118 offset_region( tmp, -child->client_rect.left, -child->client_rect.top );
1119 redraw_window( child, tmp, 1, flags );
1120 offset_region( tmp, child->client_rect.left, child->client_rect.top );
1126 /* retrieve the update flags for a window depending on the state of the update region */
1127 static unsigned int get_update_flags( struct window *win, unsigned int flags )
1129 unsigned int ret = 0;
1131 if (flags & UPDATE_NONCLIENT)
1133 if ((win->paint_flags & PAINT_NONCLIENT) && win->update_region) ret |= UPDATE_NONCLIENT;
1135 if (flags & UPDATE_ERASE)
1137 if ((win->paint_flags & PAINT_ERASE) && win->update_region) ret |= UPDATE_ERASE;
1139 if (flags & UPDATE_PAINT)
1141 if (win->update_region) ret |= UPDATE_PAINT;
1143 if (flags & UPDATE_INTERNALPAINT)
1145 if (win->paint_flags & PAINT_INTERNAL) ret |= UPDATE_INTERNALPAINT;
1151 /* iterate through the children of the given window until we find one with some update flags */
1152 static unsigned int get_child_update_flags( struct window *win, struct window *from_child,
1153 unsigned int flags, struct window **child )
1156 unsigned int ret = 0;
1158 /* first make sure we want to iterate children at all */
1160 if (win->style & WS_MINIMIZE) return 0;
1162 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1163 * here we only want to repaint children of windows that clip them, others
1164 * need to wait for WM_PAINT to be done in the parent first.
1166 if (!(flags & UPDATE_ALLCHILDREN) && !(win->style & WS_CLIPCHILDREN)) return 0;
1168 LIST_FOR_EACH_ENTRY( ptr, &win->children, struct window, entry )
1170 if (from_child) /* skip all children until from_child is found */
1172 if (ptr == from_child) from_child = NULL;
1175 if (!(ptr->style & WS_VISIBLE)) continue;
1176 if ((ret = get_update_flags( ptr, flags )) != 0)
1181 if ((ret = get_child_update_flags( ptr, NULL, flags, child ))) break;
1186 /* iterate through children and siblings of the given window until we find one with some update flags */
1187 static unsigned int get_window_update_flags( struct window *win, struct window *from_child,
1188 unsigned int flags, struct window **child )
1191 struct window *ptr, *from_sibling = NULL;
1193 /* if some parent is not visible start from the next sibling */
1195 if (!is_visible( win )) return 0;
1196 for (ptr = from_child; ptr; ptr = ptr->parent)
1198 if (!(ptr->style & WS_VISIBLE) || (ptr->style & WS_MINIMIZE)) from_sibling = ptr;
1199 if (ptr == win) break;
1202 /* non-client painting must be delayed if one of the parents is going to
1203 * be repainted and doesn't clip children */
1205 if ((flags & UPDATE_NONCLIENT) && !(flags & (UPDATE_PAINT|UPDATE_INTERNALPAINT)))
1207 for (ptr = win->parent; ptr; ptr = ptr->parent)
1209 if (!(ptr->style & WS_CLIPCHILDREN) && win_needs_repaint( ptr ))
1212 if (from_child && !(flags & UPDATE_ALLCHILDREN))
1214 for (ptr = from_sibling ? from_sibling : from_child; ptr; ptr = ptr->parent)
1216 if (!(ptr->style & WS_CLIPCHILDREN) && win_needs_repaint( ptr )) from_sibling = ptr;
1217 if (ptr == win) break;
1223 /* check window itself (only if not restarting from a child) */
1227 if ((ret = get_update_flags( win, flags )))
1235 /* now check children */
1237 if (flags & UPDATE_NOCHILDREN) return 0;
1240 if ((ret = get_child_update_flags( from_child, NULL, flags, child ))) return ret;
1241 from_sibling = from_child;
1244 /* then check siblings and parent siblings */
1246 while (from_sibling->parent && from_sibling != win)
1248 if ((ret = get_child_update_flags( from_sibling->parent, from_sibling, flags, child )))
1250 from_sibling = from_sibling->parent;
1256 /* expose a region of a window, looking for the top most parent that needs to be exposed */
1257 /* the region is in window coordinates */
1258 static void expose_window( struct window *win, struct window *top, struct region *region )
1260 struct window *parent, *ptr;
1261 int offset_x, offset_y;
1263 /* find the top most parent that doesn't clip either siblings or children */
1264 for (parent = ptr = win; ptr != top; ptr = ptr->parent)
1266 if (!(ptr->style & WS_CLIPCHILDREN)) parent = ptr;
1267 if (!(ptr->style & WS_CLIPSIBLINGS)) parent = ptr->parent;
1269 if (parent == win && parent != top && win->parent)
1270 parent = win->parent; /* always go up at least one level if possible */
1272 offset_x = win->window_rect.left - win->client_rect.left;
1273 offset_y = win->window_rect.top - win->client_rect.top;
1274 for (ptr = win; ptr != parent; ptr = ptr->parent)
1276 offset_x += ptr->client_rect.left;
1277 offset_y += ptr->client_rect.top;
1279 offset_region( region, offset_x, offset_y );
1280 redraw_window( parent, region, 0, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN );
1281 offset_region( region, -offset_x, -offset_y );
1285 /* set the window and client rectangles, updating the update region if necessary */
1286 static void set_window_pos( struct window *win, struct window *previous,
1287 unsigned int swp_flags, const rectangle_t *window_rect,
1288 const rectangle_t *client_rect, const rectangle_t *visible_rect,
1289 const rectangle_t *valid_rects )
1291 struct region *old_vis_rgn = NULL, *new_vis_rgn;
1292 const rectangle_t old_window_rect = win->window_rect;
1293 const rectangle_t old_visible_rect = win->visible_rect;
1294 const rectangle_t old_client_rect = win->client_rect;
1295 struct window *top = get_top_clipping_window( win );
1296 int visible = (win->style & WS_VISIBLE) || (swp_flags & SWP_SHOWWINDOW);
1298 if (win->parent && !is_visible( win->parent )) visible = 0;
1300 if (visible && !(old_vis_rgn = get_visible_region( win, top, DCX_WINDOW ))) return;
1302 /* set the new window info before invalidating anything */
1304 win->window_rect = *window_rect;
1305 win->visible_rect = *visible_rect;
1306 win->client_rect = *client_rect;
1307 if (!(swp_flags & SWP_NOZORDER) && win->parent)
1309 list_remove( &win->entry ); /* unlink it from the previous location */
1310 if (previous) list_add_after( &previous->entry, &win->entry );
1311 else list_add_head( &win->parent->children, &win->entry );
1313 if (swp_flags & SWP_SHOWWINDOW) win->style |= WS_VISIBLE;
1314 else if (swp_flags & SWP_HIDEWINDOW) win->style &= ~WS_VISIBLE;
1316 /* if the window is not visible, everything is easy */
1317 if (!visible) return;
1319 if (!(new_vis_rgn = get_visible_region( win, top, DCX_WINDOW )))
1321 free_region( old_vis_rgn );
1322 clear_error(); /* ignore error since the window info has been modified already */
1326 /* expose anything revealed by the change */
1328 if (!(swp_flags & SWP_NOREDRAW))
1330 offset_region( old_vis_rgn, old_window_rect.left - window_rect->left,
1331 old_window_rect.top - window_rect->top );
1332 if (xor_region( new_vis_rgn, old_vis_rgn, new_vis_rgn ))
1333 expose_window( win, top, new_vis_rgn );
1335 free_region( old_vis_rgn );
1337 if (!(win->style & WS_VISIBLE))
1339 /* clear the update region since the window is no longer visible */
1340 validate_whole_window( win );
1344 /* crop update region to the new window rect */
1346 if (win->update_region &&
1347 (window_rect->right - window_rect->left < old_window_rect.right - old_window_rect.left ||
1348 window_rect->bottom - window_rect->top < old_window_rect.bottom - old_window_rect.top))
1350 struct region *tmp = create_empty_region();
1353 set_region_rect( tmp, window_rect );
1354 offset_region( tmp, -window_rect->left, -window_rect->top );
1355 if (intersect_region( tmp, win->update_region, tmp ))
1356 set_update_region( win, tmp );
1362 if (swp_flags & SWP_NOREDRAW) goto done; /* do not repaint anything */
1364 /* expose the whole non-client area if it changed in any way */
1366 if ((swp_flags & SWP_FRAMECHANGED) ||
1367 memcmp( window_rect, &old_window_rect, sizeof(old_window_rect) ) ||
1368 memcmp( visible_rect, &old_visible_rect, sizeof(old_visible_rect) ) ||
1369 memcmp( client_rect, &old_client_rect, sizeof(old_client_rect) ))
1371 struct region *tmp = create_empty_region();
1375 /* subtract the valid portion of client rect from the total region */
1376 if (!memcmp( client_rect, &old_client_rect, sizeof(old_client_rect) ))
1377 set_region_rect( tmp, client_rect );
1378 else if (valid_rects)
1379 set_region_rect( tmp, &valid_rects[0] );
1381 set_region_rect( new_vis_rgn, window_rect );
1382 if (subtract_region( tmp, new_vis_rgn, tmp ))
1384 offset_region( tmp, -client_rect->left, -client_rect->top );
1385 redraw_window( win, tmp, 1, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
1392 free_region( new_vis_rgn );
1393 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1397 /* create a window */
1398 DECL_HANDLER(create_window)
1400 struct window *win, *parent, *owner = NULL;
1404 if (!req->parent) parent = get_desktop_window( current, 0 );
1405 else if (!(parent = get_window( req->parent ))) return;
1409 if (!(owner = get_window( req->owner ))) return;
1410 if (is_desktop_window(owner)) owner = NULL;
1411 else if (!is_desktop_window(parent))
1413 /* an owned window must be created as top-level */
1414 set_error( STATUS_ACCESS_DENIED );
1417 else /* owner must be a top-level window */
1418 while (!is_desktop_window(owner->parent)) owner = owner->parent;
1420 if (!(win = create_window( parent, owner, req->atom, req->instance ))) return;
1422 reply->handle = win->handle;
1423 reply->parent = win->parent ? win->parent->handle : 0;
1424 reply->owner = win->owner;
1425 reply->extra = win->nb_extra_bytes;
1426 reply->class_ptr = get_class_client_ptr( win->class );
1430 /* set the parent of a window */
1431 DECL_HANDLER(set_parent)
1433 struct window *win, *parent = NULL;
1435 if (!(win = get_window( req->handle ))) return;
1436 if (req->parent && !(parent = get_window( req->parent ))) return;
1438 if (is_desktop_window(win))
1440 set_error( STATUS_INVALID_PARAMETER );
1443 reply->old_parent = win->parent->handle;
1444 reply->full_parent = parent ? parent->handle : 0;
1445 set_parent_window( win, parent );
1449 /* destroy a window */
1450 DECL_HANDLER(destroy_window)
1452 struct window *win = get_window( req->handle );
1455 if (!is_desktop_window(win)) destroy_window( win );
1456 else if (win->thread == current) detach_window_thread( win );
1457 else set_error( STATUS_ACCESS_DENIED );
1462 /* retrieve the desktop window for the current thread */
1463 DECL_HANDLER(get_desktop_window)
1465 struct window *win = get_desktop_window( current, req->force );
1467 if (win) reply->handle = win->handle;
1471 /* set a window owner */
1472 DECL_HANDLER(set_window_owner)
1474 struct window *win = get_window( req->handle );
1475 struct window *owner = NULL;
1478 if (req->owner && !(owner = get_window( req->owner ))) return;
1479 if (is_desktop_window(win))
1481 set_error( STATUS_ACCESS_DENIED );
1484 reply->prev_owner = win->owner;
1485 reply->full_owner = win->owner = owner ? owner->handle : 0;
1489 /* get information from a window handle */
1490 DECL_HANDLER(get_window_info)
1492 struct window *win = get_window( req->handle );
1494 reply->full_handle = 0;
1495 reply->tid = reply->pid = 0;
1498 reply->full_handle = win->handle;
1499 reply->last_active = win->handle;
1500 reply->is_unicode = win->is_unicode;
1501 if (get_user_object( win->last_active, USER_WINDOW )) reply->last_active = win->last_active;
1504 reply->tid = get_thread_id( win->thread );
1505 reply->pid = get_process_id( win->thread->process );
1506 reply->atom = win->class ? get_class_atom( win->class ) : DESKTOP_ATOM;
1512 /* set some information in a window */
1513 DECL_HANDLER(set_window_info)
1515 struct window *win = get_window( req->handle );
1518 if (req->flags && is_desktop_window(win) && win->thread != current)
1520 set_error( STATUS_ACCESS_DENIED );
1523 if (req->extra_size > sizeof(req->extra_value) ||
1524 req->extra_offset < -1 ||
1525 req->extra_offset > win->nb_extra_bytes - (int)req->extra_size)
1527 set_win32_error( ERROR_INVALID_INDEX );
1530 if (req->extra_offset != -1)
1532 memcpy( &reply->old_extra_value, win->extra_bytes + req->extra_offset, req->extra_size );
1534 else if (req->flags & SET_WIN_EXTRA)
1536 set_win32_error( ERROR_INVALID_INDEX );
1539 reply->old_style = win->style;
1540 reply->old_ex_style = win->ex_style;
1541 reply->old_id = win->id;
1542 reply->old_instance = win->instance;
1543 reply->old_user_data = win->user_data;
1544 if (req->flags & SET_WIN_STYLE) win->style = req->style;
1545 if (req->flags & SET_WIN_EXSTYLE) win->ex_style = req->ex_style;
1546 if (req->flags & SET_WIN_ID) win->id = req->id;
1547 if (req->flags & SET_WIN_INSTANCE) win->instance = req->instance;
1548 if (req->flags & SET_WIN_UNICODE) win->is_unicode = req->is_unicode;
1549 if (req->flags & SET_WIN_USERDATA) win->user_data = req->user_data;
1550 if (req->flags & SET_WIN_EXTRA) memcpy( win->extra_bytes + req->extra_offset,
1551 &req->extra_value, req->extra_size );
1553 /* changing window style triggers a non-client paint */
1554 if (req->flags & SET_WIN_STYLE) win->paint_flags |= PAINT_NONCLIENT;
1558 /* get a list of the window parents, up to the root of the tree */
1559 DECL_HANDLER(get_window_parents)
1561 struct window *ptr, *win = get_window( req->handle );
1563 user_handle_t *data;
1566 if (win) for (ptr = win->parent; ptr; ptr = ptr->parent) total++;
1568 reply->count = total;
1569 len = min( get_reply_max_size(), total * sizeof(user_handle_t) );
1570 if (len && ((data = set_reply_data_size( len ))))
1572 for (ptr = win->parent; ptr && len; ptr = ptr->parent, len -= sizeof(*data))
1573 *data++ = ptr->handle;
1578 /* get a list of the window children */
1579 DECL_HANDLER(get_window_children)
1581 struct window *ptr, *parent = get_window( req->parent );
1583 user_handle_t *data;
1588 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
1590 if (req->atom && get_class_atom(ptr->class) != req->atom) continue;
1591 if (req->tid && get_thread_id(ptr->thread) != req->tid) continue;
1595 reply->count = total;
1596 len = min( get_reply_max_size(), total * sizeof(user_handle_t) );
1597 if (len && ((data = set_reply_data_size( len ))))
1599 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
1601 if (len < sizeof(*data)) break;
1602 if (req->atom && get_class_atom(ptr->class) != req->atom) continue;
1603 if (req->tid && get_thread_id(ptr->thread) != req->tid) continue;
1604 *data++ = ptr->handle;
1605 len -= sizeof(*data);
1611 /* get a list of the window children that contain a given point */
1612 DECL_HANDLER(get_window_children_from_point)
1614 struct user_handle_array array;
1615 struct window *parent = get_window( req->parent );
1618 if (!parent) return;
1620 array.handles = NULL;
1623 if (!all_windows_from_point( parent, req->x, req->y, &array )) return;
1625 reply->count = array.count;
1626 len = min( get_reply_max_size(), array.count * sizeof(user_handle_t) );
1627 if (len) set_reply_data_ptr( array.handles, len );
1628 else free( array.handles );
1632 /* get window tree information from a window handle */
1633 DECL_HANDLER(get_window_tree)
1635 struct window *ptr, *win = get_window( req->handle );
1641 reply->next_sibling = 0;
1642 reply->prev_sibling = 0;
1643 reply->first_sibling = 0;
1644 reply->last_sibling = 0;
1645 reply->first_child = 0;
1646 reply->last_child = 0;
1650 struct window *parent = win->parent;
1651 reply->parent = parent->handle;
1652 reply->owner = win->owner;
1653 if ((ptr = get_next_window( win ))) reply->next_sibling = ptr->handle;
1654 if ((ptr = get_prev_window( win ))) reply->prev_sibling = ptr->handle;
1655 if ((ptr = get_first_child( parent ))) reply->first_sibling = ptr->handle;
1656 if ((ptr = get_last_child( parent ))) reply->last_sibling = ptr->handle;
1658 if ((ptr = get_first_child( win ))) reply->first_child = ptr->handle;
1659 if ((ptr = get_last_child( win ))) reply->last_child = ptr->handle;
1663 /* set the position and Z order of a window */
1664 DECL_HANDLER(set_window_pos)
1666 const rectangle_t *visible_rect = NULL, *valid_rects = NULL;
1667 struct window *previous = NULL;
1668 struct window *win = get_window( req->handle );
1669 unsigned int flags = req->flags;
1672 if (!win->parent) flags |= SWP_NOZORDER; /* no Z order for the desktop */
1674 if (!(flags & SWP_NOZORDER))
1676 if (!req->previous) /* special case: HWND_TOP */
1678 if (get_first_child(win->parent) == win) flags |= SWP_NOZORDER;
1680 else if (req->previous == (user_handle_t)1) /* special case: HWND_BOTTOM */
1682 previous = get_last_child( win->parent );
1686 if (!(previous = get_window( req->previous ))) return;
1687 /* previous must be a sibling */
1688 if (previous->parent != win->parent)
1690 set_error( STATUS_INVALID_PARAMETER );
1694 if (previous == win) flags |= SWP_NOZORDER; /* nothing to do */
1697 /* window rectangle must be ordered properly */
1698 if (req->window.right < req->window.left || req->window.bottom < req->window.top)
1700 set_error( STATUS_INVALID_PARAMETER );
1704 if (get_req_data_size() >= sizeof(rectangle_t)) visible_rect = get_req_data();
1705 if (get_req_data_size() >= 3 * sizeof(rectangle_t)) valid_rects = visible_rect + 1;
1707 if (!visible_rect) visible_rect = &req->window;
1708 set_window_pos( win, previous, flags, &req->window, &req->client, visible_rect, valid_rects );
1709 reply->new_style = win->style;
1713 /* get the window and client rectangles of a window */
1714 DECL_HANDLER(get_window_rectangles)
1716 struct window *win = get_window( req->handle );
1720 reply->window = win->window_rect;
1721 reply->visible = win->visible_rect;
1722 reply->client = win->client_rect;
1727 /* get the window text */
1728 DECL_HANDLER(get_window_text)
1730 struct window *win = get_window( req->handle );
1732 if (win && win->text)
1734 size_t len = strlenW( win->text ) * sizeof(WCHAR);
1735 if (len > get_reply_max_size()) len = get_reply_max_size();
1736 set_reply_data( win->text, len );
1741 /* set the window text */
1742 DECL_HANDLER(set_window_text)
1744 struct window *win = get_window( req->handle );
1749 size_t len = get_req_data_size() / sizeof(WCHAR);
1752 if (!(text = mem_alloc( (len+1) * sizeof(WCHAR) ))) return;
1753 memcpy( text, get_req_data(), len * sizeof(WCHAR) );
1756 if (win->text) free( win->text );
1762 /* get the coordinates offset between two windows */
1763 DECL_HANDLER(get_windows_offset)
1767 reply->x = reply->y = 0;
1770 if (!(win = get_window( req->from ))) return;
1773 reply->x += win->client_rect.left;
1774 reply->y += win->client_rect.top;
1780 if (!(win = get_window( req->to ))) return;
1783 reply->x -= win->client_rect.left;
1784 reply->y -= win->client_rect.top;
1791 /* get the visible region of a window */
1792 DECL_HANDLER(get_visible_region)
1794 struct region *region;
1795 struct window *top, *win = get_window( req->window );
1799 top = get_top_clipping_window( win );
1800 if ((region = get_visible_region( win, top, req->flags )))
1803 map_win_region_to_screen( win, region );
1804 data = get_region_data_and_free( region, get_reply_max_size(), &reply->total_size );
1805 if (data) set_reply_data_ptr( data, reply->total_size );
1807 reply->top_win = top->handle;
1808 reply->top_org_x = top->visible_rect.left;
1809 reply->top_org_y = top->visible_rect.top;
1810 reply->win_org_x = (req->flags & DCX_WINDOW) ? win->window_rect.left : win->client_rect.left;
1811 reply->win_org_y = (req->flags & DCX_WINDOW) ? win->window_rect.top : win->client_rect.top;
1812 client_to_screen( top->parent, &reply->top_org_x, &reply->top_org_y );
1813 client_to_screen( win->parent, &reply->win_org_x, &reply->win_org_y );
1817 /* get the window region */
1818 DECL_HANDLER(get_window_region)
1820 struct window *win = get_window( req->window );
1824 if (win->win_region)
1826 rectangle_t *data = get_region_data( win->win_region, get_reply_max_size(), &reply->total_size );
1827 if (data) set_reply_data_ptr( data, reply->total_size );
1832 /* set the window region */
1833 DECL_HANDLER(set_window_region)
1835 struct region *region = NULL;
1836 struct window *win = get_window( req->window );
1840 if (get_req_data_size()) /* no data means remove the region completely */
1842 if (!(region = create_region_from_req_data( get_req_data(), get_req_data_size() )))
1845 if (win->win_region) free_region( win->win_region );
1846 win->win_region = region;
1850 /* get a window update region */
1851 DECL_HANDLER(get_update_region)
1854 unsigned int flags = req->flags;
1855 struct window *from_child = NULL;
1856 struct window *win = get_window( req->window );
1861 if (req->from_child)
1865 if (!(from_child = get_window( req->from_child ))) return;
1867 /* make sure from_child is a child of win */
1869 while (ptr && ptr != win) ptr = ptr->parent;
1872 set_error( STATUS_INVALID_PARAMETER );
1877 reply->flags = get_window_update_flags( win, from_child, flags, &win );
1878 reply->child = win->handle;
1880 if (flags & UPDATE_NOREGION) return;
1882 if (win->update_region)
1884 /* convert update region to screen coordinates */
1885 struct region *region = create_empty_region();
1887 if (!region) return;
1888 if (!copy_region( region, win->update_region ))
1890 free_region( region );
1893 map_win_region_to_screen( win, region );
1894 if (!(data = get_region_data_and_free( region, get_reply_max_size(),
1895 &reply->total_size ))) return;
1896 set_reply_data_ptr( data, reply->total_size );
1899 if (reply->flags & (UPDATE_PAINT|UPDATE_INTERNALPAINT)) /* validate everything */
1901 validate_whole_window( win );
1905 if (reply->flags & UPDATE_NONCLIENT) validate_non_client( win );
1906 if (reply->flags & UPDATE_ERASE)
1908 win->paint_flags &= ~PAINT_ERASE;
1909 /* desktop window only gets erased, not repainted */
1910 if (is_desktop_window(win)) validate_whole_window( win );
1916 /* update the z order of a window so that a given rectangle is fully visible */
1917 DECL_HANDLER(update_window_zorder)
1920 struct window *ptr, *win = get_window( req->window );
1922 if (!win || !win->parent || !is_visible( win )) return; /* nothing to do */
1924 LIST_FOR_EACH_ENTRY( ptr, &win->parent->children, struct window, entry )
1926 if (ptr == win) break;
1927 if (!(ptr->style & WS_VISIBLE)) continue;
1928 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
1929 if (!intersect_rect( &tmp, &ptr->visible_rect, &req->rect )) continue;
1930 if (ptr->win_region && !rect_in_region( ptr->win_region, &req->rect )) continue;
1931 /* found a window obscuring the rectangle, now move win above this one */
1932 list_remove( &win->entry );
1933 list_add_before( &ptr->entry, &win->entry );
1939 /* mark parts of a window as needing a redraw */
1940 DECL_HANDLER(redraw_window)
1942 struct region *region = NULL;
1943 struct window *win = get_window( req->window );
1946 if (!is_visible( win )) return; /* nothing to do */
1948 if (req->flags & (RDW_VALIDATE|RDW_INVALIDATE))
1950 if (get_req_data_size()) /* no data means whole rectangle */
1952 if (!(region = create_region_from_req_data( get_req_data(), get_req_data_size() )))
1957 redraw_window( win, region, (req->flags & RDW_INVALIDATE) && (req->flags & RDW_FRAME),
1959 if (region) free_region( region );
1963 /* set a window property */
1964 DECL_HANDLER(set_window_property)
1966 struct window *win = get_window( req->window );
1970 if (get_req_data_size())
1972 atom_t atom = add_global_atom( NULL, get_req_data(), get_req_data_size() / sizeof(WCHAR) );
1975 set_property( win, atom, req->handle, PROP_TYPE_STRING );
1976 release_global_atom( NULL, atom );
1979 else set_property( win, req->atom, req->handle, PROP_TYPE_ATOM );
1983 /* remove a window property */
1984 DECL_HANDLER(remove_window_property)
1986 struct window *win = get_window( req->window );
1990 atom_t atom = req->atom;
1991 if (get_req_data_size()) atom = find_global_atom( NULL, get_req_data(),
1992 get_req_data_size() / sizeof(WCHAR) );
1993 if (atom) reply->handle = remove_property( win, atom );
1998 /* get a window property */
1999 DECL_HANDLER(get_window_property)
2001 struct window *win = get_window( req->window );
2005 atom_t atom = req->atom;
2006 if (get_req_data_size()) atom = find_global_atom( NULL, get_req_data(),
2007 get_req_data_size() / sizeof(WCHAR) );
2008 if (atom) reply->handle = get_property( win, atom );
2013 /* get the list of properties of a window */
2014 DECL_HANDLER(get_window_properties)
2016 property_data_t *data;
2017 int i, count, max = get_reply_max_size() / sizeof(*data);
2018 struct window *win = get_window( req->window );
2023 for (i = count = 0; i < win->prop_inuse; i++)
2024 if (win->properties[i].type != PROP_TYPE_FREE) count++;
2025 reply->total = count;
2027 if (count > max) count = max;
2028 if (!count || !(data = set_reply_data_size( count * sizeof(*data) ))) return;
2030 for (i = 0; i < win->prop_inuse && count; i++)
2032 if (win->properties[i].type == PROP_TYPE_FREE) continue;
2033 data->atom = win->properties[i].atom;
2034 data->string = (win->properties[i].type == PROP_TYPE_STRING);
2035 data->handle = win->properties[i].handle;
2042 /* get the new window pointer for a global window, checking permissions */
2043 /* helper for set_global_windows request */
2044 static int get_new_global_window( struct window **win, user_handle_t handle )
2053 set_error( STATUS_ACCESS_DENIED );
2056 *win = get_window( handle );
2057 return (*win != NULL);
2060 /* Set/get the global windows */
2061 DECL_HANDLER(set_global_windows)
2063 struct window *new_shell_window = shell_window;
2064 struct window *new_shell_listview = shell_listview;
2065 struct window *new_progman_window = progman_window;
2066 struct window *new_taskman_window = taskman_window;
2068 reply->old_shell_window = shell_window ? shell_window->handle : 0;
2069 reply->old_shell_listview = shell_listview ? shell_listview->handle : 0;
2070 reply->old_progman_window = progman_window ? progman_window->handle : 0;
2071 reply->old_taskman_window = taskman_window ? taskman_window->handle : 0;
2073 if (req->flags & SET_GLOBAL_SHELL_WINDOWS)
2075 if (!get_new_global_window( &new_shell_window, req->shell_window )) return;
2076 if (!get_new_global_window( &new_shell_listview, req->shell_listview )) return;
2078 if (req->flags & SET_GLOBAL_PROGMAN_WINDOW)
2080 if (!get_new_global_window( &new_progman_window, req->progman_window )) return;
2082 if (req->flags & SET_GLOBAL_TASKMAN_WINDOW)
2084 if (!get_new_global_window( &new_taskman_window, req->taskman_window )) return;
2086 shell_window = new_shell_window;
2087 shell_listview = new_shell_listview;
2088 progman_window = new_progman_window;
2089 taskman_window = new_taskman_window;