kernel32: Waitable timer names are case sensitive.
[wine.git] / server / window.c
bloba000cfc4bf989c7181eed37c2de2f922036d3057
1 /*
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
21 #include "config.h"
22 #include "wine/port.h"
24 #include <assert.h>
25 #include <stdarg.h>
27 #include "ntstatus.h"
28 #define WIN32_NO_STATUS
29 #include "windef.h"
30 #include "winbase.h"
31 #include "wingdi.h"
32 #include "winuser.h"
33 #include "winternl.h"
35 #include "object.h"
36 #include "request.h"
37 #include "thread.h"
38 #include "process.h"
39 #include "user.h"
40 #include "unicode.h"
42 /* a window property */
43 struct 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) */
50 enum property_type
52 PROP_TYPE_FREE, /* free entry */
53 PROP_TYPE_STRING, /* atom that was originally a string */
54 PROP_TYPE_ATOM /* plain atom */
58 struct window
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 unsigned int is_unicode : 1; /* ANSI or unicode */
81 unsigned int is_linked : 1; /* is it linked into the parent z-order list? */
82 unsigned long user_data; /* user-specific data */
83 WCHAR *text; /* window caption text */
84 unsigned int paint_flags; /* various painting flags */
85 int prop_inuse; /* number of in-use window properties */
86 int prop_alloc; /* number of allocated window properties */
87 struct property *properties; /* window properties array */
88 int nb_extra_bytes; /* number of extra bytes */
89 char extra_bytes[1]; /* extra bytes storage */
92 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
93 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
94 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
95 #define PAINT_DELAYED_ERASE 0x08 /* still needs erase after WM_ERASEBKGND */
97 /* growable array of user handles */
98 struct user_handle_array
100 user_handle_t *handles;
101 int count;
102 int total;
105 /* global window pointers */
106 static struct window *shell_window;
107 static struct window *shell_listview;
108 static struct window *progman_window;
109 static struct window *taskman_window;
111 /* magic HWND_TOP etc. pointers */
112 #define WINPTR_TOP ((struct window *)1L)
113 #define WINPTR_BOTTOM ((struct window *)2L)
114 #define WINPTR_TOPMOST ((struct window *)3L)
115 #define WINPTR_NOTOPMOST ((struct window *)4L)
117 /* retrieve a pointer to a window from its handle */
118 static inline struct window *get_window( user_handle_t handle )
120 struct window *ret = get_user_object( handle, USER_WINDOW );
121 if (!ret) set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
122 return ret;
125 /* check if window is the desktop */
126 static inline int is_desktop_window( const struct window *win )
128 return !win->parent; /* only desktop windows have no parent */
131 /* get next window in Z-order list */
132 static inline struct window *get_next_window( struct window *win )
134 struct list *ptr = list_next( &win->parent->children, &win->entry );
135 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
138 /* get previous window in Z-order list */
139 static inline struct window *get_prev_window( struct window *win )
141 struct list *ptr = list_prev( &win->parent->children, &win->entry );
142 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
145 /* get first child in Z-order list */
146 static inline struct window *get_first_child( struct window *win )
148 struct list *ptr = list_head( &win->children );
149 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
152 /* get last child in Z-order list */
153 static inline struct window *get_last_child( struct window *win )
155 struct list *ptr = list_tail( &win->children );
156 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
159 /* link a window at the right place in the siblings list */
160 static void link_window( struct window *win, struct window *previous )
162 if (previous == WINPTR_NOTOPMOST)
164 if (!(win->ex_style & WS_EX_TOPMOST) && win->is_linked) return; /* nothing to do */
165 win->ex_style &= ~WS_EX_TOPMOST;
166 previous = WINPTR_TOP; /* fallback to the HWND_TOP case */
169 list_remove( &win->entry ); /* unlink it from the previous location */
171 if (previous == WINPTR_BOTTOM)
173 list_add_tail( &win->parent->children, &win->entry );
174 win->ex_style &= ~WS_EX_TOPMOST;
176 else if (previous == WINPTR_TOPMOST)
178 list_add_head( &win->parent->children, &win->entry );
179 win->ex_style |= WS_EX_TOPMOST;
181 else if (previous == WINPTR_TOP)
183 struct list *entry = win->parent->children.next;
184 if (!(win->ex_style & WS_EX_TOPMOST)) /* put it above the first non-topmost window */
186 while (entry != &win->parent->children &&
187 LIST_ENTRY( entry, struct window, entry )->ex_style & WS_EX_TOPMOST)
188 entry = entry->next;
190 list_add_before( entry, &win->entry );
192 else
194 list_add_after( &previous->entry, &win->entry );
195 if (!(previous->ex_style & WS_EX_TOPMOST)) win->ex_style &= ~WS_EX_TOPMOST;
196 else
198 struct window *next = get_next_window( win );
199 if (next && (next->ex_style & WS_EX_TOPMOST)) win->ex_style |= WS_EX_TOPMOST;
203 win->is_linked = 1;
206 /* change the parent of a window (or unlink the window if the new parent is NULL) */
207 static int set_parent_window( struct window *win, struct window *parent )
209 struct window *ptr;
211 /* make sure parent is not a child of window */
212 for (ptr = parent; ptr; ptr = ptr->parent)
214 if (ptr == win)
216 set_error( STATUS_INVALID_PARAMETER );
217 return 0;
221 if (parent)
223 win->parent = parent;
224 link_window( win, WINPTR_TOP );
226 /* if parent belongs to a different thread and the window isn't */
227 /* top-level, attach the two threads */
228 if (parent->thread && parent->thread != win->thread && !is_desktop_window(parent))
229 attach_thread_input( win->thread, parent->thread );
231 else /* move it to parent unlinked list */
233 list_remove( &win->entry ); /* unlink it from the previous location */
234 list_add_head( &win->parent->unlinked, &win->entry );
235 win->is_linked = 0;
237 return 1;
240 /* append a user handle to a handle array */
241 static int add_handle_to_array( struct user_handle_array *array, user_handle_t handle )
243 if (array->count >= array->total)
245 int new_total = max( array->total * 2, 32 );
246 user_handle_t *new_array = realloc( array->handles, new_total * sizeof(*new_array) );
247 if (!new_array)
249 free( array->handles );
250 set_error( STATUS_NO_MEMORY );
251 return 0;
253 array->handles = new_array;
254 array->total = new_total;
256 array->handles[array->count++] = handle;
257 return 1;
260 /* set a window property */
261 static void set_property( struct window *win, atom_t atom, obj_handle_t handle, enum property_type type )
263 int i, free = -1;
264 struct property *new_props;
266 /* check if it exists already */
267 for (i = 0; i < win->prop_inuse; i++)
269 if (win->properties[i].type == PROP_TYPE_FREE)
271 free = i;
272 continue;
274 if (win->properties[i].atom == atom)
276 win->properties[i].type = type;
277 win->properties[i].handle = handle;
278 return;
282 /* need to add an entry */
283 if (!grab_global_atom( NULL, atom )) return;
284 if (free == -1)
286 /* no free entry */
287 if (win->prop_inuse >= win->prop_alloc)
289 /* need to grow the array */
290 if (!(new_props = realloc( win->properties,
291 sizeof(*new_props) * (win->prop_alloc + 16) )))
293 set_error( STATUS_NO_MEMORY );
294 release_global_atom( NULL, atom );
295 return;
297 win->prop_alloc += 16;
298 win->properties = new_props;
300 free = win->prop_inuse++;
302 win->properties[free].atom = atom;
303 win->properties[free].type = type;
304 win->properties[free].handle = handle;
307 /* remove a window property */
308 static obj_handle_t remove_property( struct window *win, atom_t atom )
310 int i;
312 for (i = 0; i < win->prop_inuse; i++)
314 if (win->properties[i].type == PROP_TYPE_FREE) continue;
315 if (win->properties[i].atom == atom)
317 release_global_atom( NULL, atom );
318 win->properties[i].type = PROP_TYPE_FREE;
319 return win->properties[i].handle;
322 /* FIXME: last error? */
323 return 0;
326 /* find a window property */
327 static obj_handle_t get_property( struct window *win, atom_t atom )
329 int i;
331 for (i = 0; i < win->prop_inuse; i++)
333 if (win->properties[i].type == PROP_TYPE_FREE) continue;
334 if (win->properties[i].atom == atom) return win->properties[i].handle;
336 /* FIXME: last error? */
337 return 0;
340 /* destroy all properties of a window */
341 static inline void destroy_properties( struct window *win )
343 int i;
345 if (!win->properties) return;
346 for (i = 0; i < win->prop_inuse; i++)
348 if (win->properties[i].type == PROP_TYPE_FREE) continue;
349 release_global_atom( NULL, win->properties[i].atom );
351 free( win->properties );
354 /* detach a window from its owner thread but keep the window around */
355 static void detach_window_thread( struct window *win )
357 struct thread *thread = win->thread;
359 if (!thread) return;
360 if (thread->queue)
362 if (win->update_region) inc_queue_paint_count( thread, -1 );
363 if (win->paint_flags & PAINT_INTERNAL) inc_queue_paint_count( thread, -1 );
364 queue_cleanup_window( thread, win->handle );
366 assert( thread->desktop_users > 0 );
367 thread->desktop_users--;
368 release_class( win->class );
369 win->class = NULL;
371 /* don't hold a reference to the desktop so that the desktop window can be */
372 /* destroyed when the desktop ref count reaches zero */
373 release_object( win->desktop );
374 win->thread = NULL;
377 /* destroy a window */
378 void destroy_window( struct window *win )
380 /* destroy all children */
381 while (!list_empty(&win->children))
382 destroy_window( LIST_ENTRY( list_head(&win->children), struct window, entry ));
383 while (!list_empty(&win->unlinked))
384 destroy_window( LIST_ENTRY( list_head(&win->unlinked), struct window, entry ));
386 /* reset global window pointers, if the corresponding window is destroyed */
387 if (win == shell_window) shell_window = NULL;
388 if (win == shell_listview) shell_listview = NULL;
389 if (win == progman_window) progman_window = NULL;
390 if (win == taskman_window) taskman_window = NULL;
391 free_user_handle( win->handle );
392 destroy_properties( win );
393 list_remove( &win->entry );
394 if (is_desktop_window(win))
396 assert( win->desktop->top_window == win );
397 win->desktop->top_window = NULL;
399 detach_window_thread( win );
400 if (win->win_region) free_region( win->win_region );
401 if (win->update_region) free_region( win->update_region );
402 if (win->class) release_class( win->class );
403 free( win->text );
404 memset( win, 0x55, sizeof(*win) + win->nb_extra_bytes - 1 );
405 free( win );
408 /* get the process owning the top window of a given desktop */
409 struct process *get_top_window_owner( struct desktop *desktop )
411 struct window *win = desktop->top_window;
412 if (!win || !win->thread) return NULL;
413 return win->thread->process;
416 /* attempt to close the desktop window when the last process using it is gone */
417 void close_desktop_window( struct desktop *desktop )
419 struct window *win = desktop->top_window;
420 if (win && win->thread) post_message( win->handle, WM_CLOSE, 0, 0 );
423 /* create a new window structure (note: the window is not linked in the window tree) */
424 static struct window *create_window( struct window *parent, struct window *owner,
425 atom_t atom, void *instance )
427 static const rectangle_t empty_rect;
428 int extra_bytes;
429 struct window *win;
430 struct desktop *desktop;
431 struct window_class *class;
433 if (!(desktop = get_thread_desktop( current, DESKTOP_CREATEWINDOW ))) return NULL;
435 if (!(class = grab_class( current->process, atom, instance, &extra_bytes )))
437 release_object( desktop );
438 return NULL;
441 if (!(win = mem_alloc( sizeof(*win) + extra_bytes - 1 ))) goto failed;
442 if (!(win->handle = alloc_user_handle( win, USER_WINDOW ))) goto failed;
444 win->parent = parent;
445 win->owner = owner ? owner->handle : 0;
446 win->thread = current;
447 win->desktop = desktop;
448 win->class = class;
449 win->atom = atom;
450 win->last_active = win->handle;
451 win->win_region = NULL;
452 win->update_region = NULL;
453 win->style = 0;
454 win->ex_style = 0;
455 win->id = 0;
456 win->instance = NULL;
457 win->is_unicode = 1;
458 win->is_linked = 0;
459 win->user_data = 0;
460 win->text = NULL;
461 win->paint_flags = 0;
462 win->prop_inuse = 0;
463 win->prop_alloc = 0;
464 win->properties = NULL;
465 win->nb_extra_bytes = extra_bytes;
466 win->window_rect = win->visible_rect = win->client_rect = empty_rect;
467 memset( win->extra_bytes, 0, extra_bytes );
468 list_init( &win->children );
469 list_init( &win->unlinked );
471 /* parent must be on the same desktop */
472 if (parent && parent->desktop != desktop)
474 set_error( STATUS_ACCESS_DENIED );
475 goto failed;
478 /* if no parent, class must be the desktop */
479 if (!parent && !is_desktop_class( class ))
481 set_error( STATUS_ACCESS_DENIED );
482 goto failed;
485 /* if parent belongs to a different thread and the window isn't */
486 /* top-level, attach the two threads */
487 if (parent && parent->thread && parent->thread != current && !is_desktop_window(parent))
489 if (!attach_thread_input( current, parent->thread )) goto failed;
491 else /* otherwise just make sure that the thread has a message queue */
493 if (!current->queue && !init_thread_queue( current )) goto failed;
496 /* put it on parent unlinked list */
497 if (parent) list_add_head( &parent->unlinked, &win->entry );
498 else
500 list_init( &win->entry );
501 assert( !desktop->top_window );
502 desktop->top_window = win;
503 set_process_default_desktop( current->process, desktop, current->desktop );
506 current->desktop_users++;
507 return win;
509 failed:
510 if (win)
512 if (win->handle) free_user_handle( win->handle );
513 free( win );
515 release_object( desktop );
516 release_class( class );
517 return NULL;
520 /* destroy all windows belonging to a given thread */
521 void destroy_thread_windows( struct thread *thread )
523 user_handle_t handle = 0;
524 struct window *win;
526 while ((win = next_user_handle( &handle, USER_WINDOW )))
528 if (win->thread != thread) continue;
529 if (is_desktop_window( win )) detach_window_thread( win );
530 else destroy_window( win );
534 /* get the desktop window */
535 static struct window *get_desktop_window( struct thread *thread, int create )
537 struct window *top_window;
538 struct desktop *desktop = get_thread_desktop( thread, 0 );
540 if (!desktop) return NULL;
542 if (!(top_window = desktop->top_window) && create)
544 if ((top_window = create_window( NULL, NULL, DESKTOP_ATOM, 0 )))
546 detach_window_thread( top_window );
547 top_window->style = WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
550 release_object( desktop );
551 return top_window;
554 /* check whether child is a descendant of parent */
555 int is_child_window( user_handle_t parent, user_handle_t child )
557 struct window *child_ptr = get_user_object( child, USER_WINDOW );
558 struct window *parent_ptr = get_user_object( parent, USER_WINDOW );
560 if (!child_ptr || !parent_ptr) return 0;
561 while (child_ptr->parent)
563 if (child_ptr->parent == parent_ptr) return 1;
564 child_ptr = child_ptr->parent;
566 return 0;
569 /* check whether window is a top-level window */
570 int is_top_level_window( user_handle_t window )
572 struct window *win = get_user_object( window, USER_WINDOW );
573 return (win && (is_desktop_window(win) || is_desktop_window(win->parent)));
576 /* make a window active if possible */
577 int make_window_active( user_handle_t window )
579 struct window *owner, *win = get_window( window );
581 if (!win) return 0;
583 /* set last active for window and its owner */
584 win->last_active = win->handle;
585 if ((owner = get_user_object( win->owner, USER_WINDOW ))) owner->last_active = win->handle;
586 return 1;
589 /* increment (or decrement) the window paint count */
590 static inline void inc_window_paint_count( struct window *win, int incr )
592 if (win->thread) inc_queue_paint_count( win->thread, incr );
595 /* check if window and all its ancestors are visible */
596 static int is_visible( const struct window *win )
598 while (win && win->parent)
600 if (!(win->style & WS_VISIBLE)) return 0;
601 win = win->parent;
602 /* if parent is minimized children are not visible */
603 if (win && (win->style & WS_MINIMIZE)) return 0;
605 return 1;
608 /* same as is_visible but takes a window handle */
609 int is_window_visible( user_handle_t window )
611 struct window *win = get_user_object( window, USER_WINDOW );
612 if (!win) return 0;
613 return is_visible( win );
616 /* check if point is inside the window */
617 static inline int is_point_in_window( struct window *win, int x, int y )
619 if (!(win->style & WS_VISIBLE)) return 0; /* not visible */
620 if ((win->style & (WS_POPUP|WS_CHILD|WS_DISABLED)) == (WS_CHILD|WS_DISABLED))
621 return 0; /* disabled child */
622 if ((win->ex_style & (WS_EX_LAYERED|WS_EX_TRANSPARENT)) == (WS_EX_LAYERED|WS_EX_TRANSPARENT))
623 return 0; /* transparent */
624 if (x < win->visible_rect.left || x >= win->visible_rect.right ||
625 y < win->visible_rect.top || y >= win->visible_rect.bottom)
626 return 0; /* not in window */
627 if (win->win_region &&
628 !point_in_region( win->win_region, x - win->window_rect.left, y - win->window_rect.top ))
629 return 0; /* not in window region */
630 return 1;
633 /* find child of 'parent' that contains the given point (in parent-relative coords) */
634 static struct window *child_window_from_point( struct window *parent, int x, int y )
636 struct window *ptr;
638 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
640 if (!is_point_in_window( ptr, x, y )) continue; /* skip it */
642 /* if window is minimized or disabled, return at once */
643 if (ptr->style & (WS_MINIMIZE|WS_DISABLED)) return ptr;
645 /* if point is not in client area, return at once */
646 if (x < ptr->client_rect.left || x >= ptr->client_rect.right ||
647 y < ptr->client_rect.top || y >= ptr->client_rect.bottom)
648 return ptr;
650 return child_window_from_point( ptr, x - ptr->client_rect.left, y - ptr->client_rect.top );
652 return parent; /* not found any child */
655 /* find all children of 'parent' that contain the given point */
656 static int get_window_children_from_point( struct window *parent, int x, int y,
657 struct user_handle_array *array )
659 struct window *ptr;
661 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
663 if (!is_point_in_window( ptr, x, y )) continue; /* skip it */
665 /* if point is in client area, and window is not minimized or disabled, check children */
666 if (!(ptr->style & (WS_MINIMIZE|WS_DISABLED)) &&
667 x >= ptr->client_rect.left && x < ptr->client_rect.right &&
668 y >= ptr->client_rect.top && y < ptr->client_rect.bottom)
670 if (!get_window_children_from_point( ptr, x - ptr->client_rect.left,
671 y - ptr->client_rect.top, array ))
672 return 0;
675 /* now add window to the array */
676 if (!add_handle_to_array( array, ptr->handle )) return 0;
678 return 1;
681 /* find window containing point (in absolute coords) */
682 user_handle_t window_from_point( struct desktop *desktop, int x, int y )
684 struct window *ret;
686 if (!desktop->top_window) return 0;
687 ret = child_window_from_point( desktop->top_window, x, y );
688 return ret->handle;
691 /* return list of all windows containing point (in absolute coords) */
692 static int all_windows_from_point( struct window *top, int x, int y, struct user_handle_array *array )
694 struct window *ptr;
696 /* make point relative to top window */
697 for (ptr = top->parent; ptr && !is_desktop_window(ptr); ptr = ptr->parent)
699 x -= ptr->client_rect.left;
700 y -= ptr->client_rect.top;
703 if (!is_point_in_window( top, x, y )) return 1;
705 /* if point is in client area, and window is not minimized or disabled, check children */
706 if (!(top->style & (WS_MINIMIZE|WS_DISABLED)) &&
707 x >= top->client_rect.left && x < top->client_rect.right &&
708 y >= top->client_rect.top && y < top->client_rect.bottom)
710 if (!is_desktop_window(top))
712 x -= top->client_rect.left;
713 y -= top->client_rect.top;
715 if (!get_window_children_from_point( top, x, y, array )) return 0;
717 /* now add window to the array */
718 if (!add_handle_to_array( array, top->handle )) return 0;
719 return 1;
723 /* return the thread owning a window */
724 struct thread *get_window_thread( user_handle_t handle )
726 struct window *win = get_user_object( handle, USER_WINDOW );
727 if (!win || !win->thread) return NULL;
728 return (struct thread *)grab_object( win->thread );
732 /* check if any area of a window needs repainting */
733 static inline int win_needs_repaint( struct window *win )
735 return win->update_region || (win->paint_flags & PAINT_INTERNAL);
739 /* find a child of the specified window that needs repainting */
740 static struct window *find_child_to_repaint( struct window *parent, struct thread *thread )
742 struct window *ptr, *ret = NULL;
744 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
746 if (!(ptr->style & WS_VISIBLE)) continue;
747 if (ptr->thread == thread && win_needs_repaint( ptr ))
748 ret = ptr;
749 else if (!(ptr->style & WS_MINIMIZE)) /* explore its children */
750 ret = find_child_to_repaint( ptr, thread );
751 if (ret) break;
754 if (ret && (ret->ex_style & WS_EX_TRANSPARENT))
756 /* transparent window, check for non-transparent sibling to paint first */
757 for (ptr = get_next_window(ret); ptr; ptr = get_next_window(ptr))
759 if (!(ptr->style & WS_VISIBLE)) continue;
760 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
761 if (ptr->thread != thread) continue;
762 if (win_needs_repaint( ptr )) return ptr;
765 return ret;
769 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
770 user_handle_t find_window_to_repaint( user_handle_t parent, struct thread *thread )
772 struct window *ptr, *win, *top_window = get_desktop_window( thread, 0 );
774 if (!top_window) return 0;
776 if (top_window->thread == thread && win_needs_repaint( top_window )) win = top_window;
777 else win = find_child_to_repaint( top_window, thread );
779 if (win && parent)
781 /* check that it is a child of the specified parent */
782 for (ptr = win; ptr; ptr = ptr->parent)
783 if (ptr->handle == parent) break;
784 /* otherwise don't return any window, we don't repaint a child before its parent */
785 if (!ptr) win = NULL;
787 if (!win) return 0;
788 win->paint_flags &= ~PAINT_INTERNAL;
789 return win->handle;
793 /* intersect the window region with the specified region, relative to the window parent */
794 static struct region *intersect_window_region( struct region *region, struct window *win )
796 /* make region relative to window rect */
797 offset_region( region, -win->window_rect.left, -win->window_rect.top );
798 if (!intersect_region( region, region, win->win_region )) return NULL;
799 /* make region relative to parent again */
800 offset_region( region, win->window_rect.left, win->window_rect.top );
801 return region;
805 /* convert coordinates from client to screen coords */
806 static inline void client_to_screen( struct window *win, int *x, int *y )
808 for ( ; win && !is_desktop_window(win); win = win->parent)
810 *x += win->client_rect.left;
811 *y += win->client_rect.top;
815 /* convert coordinates from client to screen coords */
816 static inline void client_to_screen_rect( struct window *win, rectangle_t *rect )
818 for ( ; win && !is_desktop_window(win); win = win->parent)
820 rect->left += win->client_rect.left;
821 rect->right += win->client_rect.left;
822 rect->top += win->client_rect.top;
823 rect->bottom += win->client_rect.top;
827 /* map the region from window to screen coordinates */
828 static inline void map_win_region_to_screen( struct window *win, struct region *region )
830 if (!is_desktop_window(win))
832 int x = win->window_rect.left;
833 int y = win->window_rect.top;
834 client_to_screen( win->parent, &x, &y );
835 offset_region( region, x, y );
840 /* clip all children of a given window out of the visible region */
841 static struct region *clip_children( struct window *parent, struct window *last,
842 struct region *region, int offset_x, int offset_y )
844 struct window *ptr;
845 struct region *tmp = create_empty_region();
847 if (!tmp) return NULL;
848 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
850 if (ptr == last) break;
851 if (!(ptr->style & WS_VISIBLE)) continue;
852 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
853 set_region_rect( tmp, &ptr->visible_rect );
854 if (ptr->win_region && !intersect_window_region( tmp, ptr ))
856 free_region( tmp );
857 return NULL;
859 offset_region( tmp, offset_x, offset_y );
860 if (!(region = subtract_region( region, region, tmp ))) break;
861 if (is_region_empty( region )) break;
863 free_region( tmp );
864 return region;
868 /* compute the intersection of two rectangles; return 0 if the result is empty */
869 static inline int intersect_rect( rectangle_t *dst, const rectangle_t *src1, const rectangle_t *src2 )
871 dst->left = max( src1->left, src2->left );
872 dst->top = max( src1->top, src2->top );
873 dst->right = min( src1->right, src2->right );
874 dst->bottom = min( src1->bottom, src2->bottom );
875 return (dst->left < dst->right && dst->top < dst->bottom);
879 /* offset the coordinates of a rectangle */
880 static inline void offset_rect( rectangle_t *rect, int offset_x, int offset_y )
882 rect->left += offset_x;
883 rect->top += offset_y;
884 rect->right += offset_x;
885 rect->bottom += offset_y;
889 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
890 static void set_region_client_rect( struct region *region, struct window *win )
892 rectangle_t rect;
894 intersect_rect( &rect, &win->window_rect, &win->client_rect );
895 set_region_rect( region, &rect );
899 /* get the top-level window to clip against for a given window */
900 static inline struct window *get_top_clipping_window( struct window *win )
902 while (win->parent && !is_desktop_window(win->parent)) win = win->parent;
903 return win;
907 /* compute the visible region of a window, in window coordinates */
908 static struct region *get_visible_region( struct window *win, unsigned int flags )
910 struct region *tmp = NULL, *region;
911 int offset_x, offset_y;
913 if (!(region = create_empty_region())) return NULL;
915 /* first check if all ancestors are visible */
917 if (!is_visible( win )) return region; /* empty region */
919 /* create a region relative to the window itself */
921 if ((flags & DCX_PARENTCLIP) && win->parent && !is_desktop_window(win->parent))
923 set_region_client_rect( region, win->parent );
924 offset_region( region, -win->parent->client_rect.left, -win->parent->client_rect.top );
926 else if (flags & DCX_WINDOW)
928 set_region_rect( region, &win->visible_rect );
929 if (win->win_region && !intersect_window_region( region, win )) goto error;
931 else
933 set_region_client_rect( region, win );
934 if (win->win_region && !intersect_window_region( region, win )) goto error;
937 /* clip children */
939 if (flags & DCX_CLIPCHILDREN)
941 if (is_desktop_window(win)) offset_x = offset_y = 0;
942 else
944 offset_x = win->client_rect.left;
945 offset_y = win->client_rect.top;
947 if (!clip_children( win, NULL, region, offset_x, offset_y )) goto error;
950 /* clip siblings of ancestors */
952 if (is_desktop_window(win)) offset_x = offset_y = 0;
953 else
955 offset_x = win->window_rect.left;
956 offset_y = win->window_rect.top;
959 if ((tmp = create_empty_region()) != NULL)
961 while (win->parent)
963 /* we don't clip out top-level siblings as that's up to the native windowing system */
964 if ((win->style & WS_CLIPSIBLINGS) && !is_desktop_window( win->parent ))
966 if (!clip_children( win->parent, win, region, 0, 0 )) goto error;
967 if (is_region_empty( region )) break;
969 /* clip to parent client area */
970 win = win->parent;
971 if (!is_desktop_window(win))
973 offset_x += win->client_rect.left;
974 offset_y += win->client_rect.top;
975 offset_region( region, win->client_rect.left, win->client_rect.top );
977 set_region_client_rect( tmp, win );
978 if (win->win_region && !intersect_window_region( tmp, win )) goto error;
979 if (!intersect_region( region, region, tmp )) goto error;
980 if (is_region_empty( region )) break;
982 free_region( tmp );
984 offset_region( region, -offset_x, -offset_y ); /* make it relative to target window */
985 return region;
987 error:
988 if (tmp) free_region( tmp );
989 free_region( region );
990 return NULL;
994 /* get the window class of a window */
995 struct window_class* get_window_class( user_handle_t window )
997 struct window *win;
998 if (!(win = get_window( window ))) return NULL;
999 if (!win->class) set_error( STATUS_ACCESS_DENIED );
1000 return win->class;
1003 /* determine the window visible rectangle, i.e. window or client rect cropped by parent rects */
1004 /* the returned rectangle is in window coordinates; return 0 if rectangle is empty */
1005 static int get_window_visible_rect( struct window *win, rectangle_t *rect, int frame )
1007 int offset_x = 0, offset_y = 0;
1009 if (!(win->style & WS_VISIBLE)) return 0;
1011 *rect = frame ? win->window_rect : win->client_rect;
1012 if (!is_desktop_window(win))
1014 offset_x = win->window_rect.left;
1015 offset_y = win->window_rect.top;
1018 while (win->parent)
1020 win = win->parent;
1021 if (!(win->style & WS_VISIBLE) || win->style & WS_MINIMIZE) return 0;
1022 if (!is_desktop_window(win))
1024 offset_x += win->client_rect.left;
1025 offset_y += win->client_rect.top;
1026 offset_rect( rect, win->client_rect.left, win->client_rect.top );
1028 if (!intersect_rect( rect, rect, &win->client_rect )) return 0;
1029 if (!intersect_rect( rect, rect, &win->window_rect )) return 0;
1031 offset_rect( rect, -offset_x, -offset_y );
1032 return 1;
1035 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1036 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1037 static struct region *crop_region_to_win_rect( struct window *win, struct region *region, int frame )
1039 rectangle_t rect;
1040 struct region *tmp;
1042 if (!get_window_visible_rect( win, &rect, frame )) return NULL;
1043 if (!(tmp = create_empty_region())) return NULL;
1044 set_region_rect( tmp, &rect );
1046 if (region)
1048 /* map it to client coords */
1049 offset_region( tmp, win->window_rect.left - win->client_rect.left,
1050 win->window_rect.top - win->client_rect.top );
1052 /* intersect specified region with bounding rect */
1053 if (!intersect_region( tmp, region, tmp )) goto done;
1054 if (is_region_empty( tmp )) goto done;
1056 /* map it back to window coords */
1057 offset_region( tmp, win->client_rect.left - win->window_rect.left,
1058 win->client_rect.top - win->window_rect.top );
1060 return tmp;
1062 done:
1063 free_region( tmp );
1064 return NULL;
1068 /* set a region as new update region for the window */
1069 static void set_update_region( struct window *win, struct region *region )
1071 if (region && !is_region_empty( region ))
1073 if (!win->update_region) inc_window_paint_count( win, 1 );
1074 else free_region( win->update_region );
1075 win->update_region = region;
1077 else
1079 if (win->update_region)
1081 inc_window_paint_count( win, -1 );
1082 free_region( win->update_region );
1084 win->paint_flags &= ~(PAINT_ERASE | PAINT_DELAYED_ERASE | PAINT_NONCLIENT);
1085 win->update_region = NULL;
1086 if (region) free_region( region );
1091 /* add a region to the update region; the passed region is freed or reused */
1092 static int add_update_region( struct window *win, struct region *region )
1094 if (win->update_region && !union_region( region, win->update_region, region ))
1096 free_region( region );
1097 return 0;
1099 set_update_region( win, region );
1100 return 1;
1104 /* crop the update region of children to the specified rectangle, in client coords */
1105 static void crop_children_update_region( struct window *win, rectangle_t *rect )
1107 struct window *child;
1108 struct region *tmp;
1109 rectangle_t child_rect;
1111 LIST_FOR_EACH_ENTRY( child, &win->children, struct window, entry )
1113 if (!(child->style & WS_VISIBLE)) continue;
1114 if (!rect) /* crop everything out */
1116 crop_children_update_region( child, NULL );
1117 set_update_region( child, NULL );
1118 continue;
1121 /* nothing to do if child is completely inside rect */
1122 if (child->window_rect.left >= rect->left &&
1123 child->window_rect.top >= rect->top &&
1124 child->window_rect.right <= rect->right &&
1125 child->window_rect.bottom <= rect->bottom) continue;
1127 /* map to child client coords and crop grand-children */
1128 child_rect = *rect;
1129 offset_rect( &child_rect, -child->client_rect.left, -child->client_rect.top );
1130 crop_children_update_region( child, &child_rect );
1132 /* now crop the child itself */
1133 if (!child->update_region) continue;
1134 if (!(tmp = create_empty_region())) continue;
1135 set_region_rect( tmp, rect );
1136 offset_region( tmp, -child->window_rect.left, -child->window_rect.top );
1137 if (intersect_region( tmp, child->update_region, tmp )) set_update_region( child, tmp );
1138 else free_region( tmp );
1143 /* validate the non client area of a window */
1144 static void validate_non_client( struct window *win )
1146 struct region *tmp;
1147 rectangle_t rect;
1149 if (!win->update_region) return; /* nothing to do */
1151 /* get client rect in window coords */
1152 rect.left = win->client_rect.left - win->window_rect.left;
1153 rect.top = win->client_rect.top - win->window_rect.top;
1154 rect.right = win->client_rect.right - win->window_rect.left;
1155 rect.bottom = win->client_rect.bottom - win->window_rect.top;
1157 if ((tmp = create_empty_region()))
1159 set_region_rect( tmp, &rect );
1160 if (intersect_region( tmp, win->update_region, tmp ))
1161 set_update_region( win, tmp );
1162 else
1163 free_region( tmp );
1165 win->paint_flags &= ~PAINT_NONCLIENT;
1169 /* validate a window completely so that we don't get any further paint messages for it */
1170 static void validate_whole_window( struct window *win )
1172 set_update_region( win, NULL );
1174 if (win->paint_flags & PAINT_INTERNAL)
1176 win->paint_flags &= ~PAINT_INTERNAL;
1177 inc_window_paint_count( win, -1 );
1182 /* validate a window's children so that we don't get any further paint messages for it */
1183 static void validate_children( struct window *win )
1185 struct window *child;
1187 LIST_FOR_EACH_ENTRY( child, &win->children, struct window, entry )
1189 if (!(child->style & WS_VISIBLE)) continue;
1190 validate_children(child);
1191 validate_whole_window(child);
1196 /* validate the update region of a window on all parents; helper for get_update_region */
1197 static void validate_parents( struct window *child )
1199 int offset_x = 0, offset_y = 0;
1200 struct window *win = child;
1201 struct region *tmp = NULL;
1203 if (!child->update_region) return;
1205 while (win->parent)
1207 /* map to parent client coords */
1208 offset_x += win->window_rect.left;
1209 offset_y += win->window_rect.top;
1211 win = win->parent;
1213 /* and now map to window coords */
1214 offset_x += win->client_rect.left - win->window_rect.left;
1215 offset_y += win->client_rect.top - win->window_rect.top;
1217 if (win->update_region && !(win->style & WS_CLIPCHILDREN))
1219 if (!tmp && !(tmp = create_empty_region())) return;
1220 offset_region( child->update_region, offset_x, offset_y );
1221 if (subtract_region( tmp, win->update_region, child->update_region ))
1223 set_update_region( win, tmp );
1224 tmp = NULL;
1226 /* restore child coords */
1227 offset_region( child->update_region, -offset_x, -offset_y );
1230 if (tmp) free_region( tmp );
1234 /* add/subtract a region (in client coordinates) to the update region of the window */
1235 static void redraw_window( struct window *win, struct region *region, int frame, unsigned int flags )
1237 struct region *tmp;
1238 struct window *child;
1240 if (flags & RDW_INVALIDATE)
1242 if (!(tmp = crop_region_to_win_rect( win, region, frame ))) return;
1244 if (!add_update_region( win, tmp )) return;
1246 if (flags & RDW_FRAME) win->paint_flags |= PAINT_NONCLIENT;
1247 if (flags & RDW_ERASE) win->paint_flags |= PAINT_ERASE;
1249 else if (flags & RDW_VALIDATE)
1251 if (!region && (flags & RDW_NOFRAME)) /* shortcut: validate everything */
1253 set_update_region( win, NULL );
1255 else if (win->update_region)
1257 if ((tmp = crop_region_to_win_rect( win, region, frame )))
1259 if (!subtract_region( tmp, win->update_region, tmp ))
1261 free_region( tmp );
1262 return;
1264 set_update_region( win, tmp );
1266 if (flags & RDW_NOFRAME) validate_non_client( win );
1267 if (flags & RDW_NOERASE) win->paint_flags &= ~(PAINT_ERASE | PAINT_DELAYED_ERASE);
1271 if ((flags & RDW_INTERNALPAINT) && !(win->paint_flags & PAINT_INTERNAL))
1273 win->paint_flags |= PAINT_INTERNAL;
1274 inc_window_paint_count( win, 1 );
1276 else if ((flags & RDW_NOINTERNALPAINT) && (win->paint_flags & PAINT_INTERNAL))
1278 win->paint_flags &= ~PAINT_INTERNAL;
1279 inc_window_paint_count( win, -1 );
1282 /* now process children recursively */
1284 if (flags & RDW_NOCHILDREN) return;
1285 if (win->style & WS_MINIMIZE) return;
1286 if ((win->style & WS_CLIPCHILDREN) && !(flags & RDW_ALLCHILDREN)) return;
1288 if (!(tmp = crop_region_to_win_rect( win, region, 0 ))) return;
1290 /* map to client coordinates */
1291 offset_region( tmp, win->window_rect.left - win->client_rect.left,
1292 win->window_rect.top - win->client_rect.top );
1294 if (flags & RDW_INVALIDATE) flags |= RDW_FRAME | RDW_ERASE;
1296 LIST_FOR_EACH_ENTRY( child, &win->children, struct window, entry )
1298 if (!(child->style & WS_VISIBLE)) continue;
1299 if (!rect_in_region( tmp, &child->window_rect )) continue;
1300 offset_region( tmp, -child->client_rect.left, -child->client_rect.top );
1301 redraw_window( child, tmp, 1, flags );
1302 offset_region( tmp, child->client_rect.left, child->client_rect.top );
1304 free_region( tmp );
1308 /* retrieve the update flags for a window depending on the state of the update region */
1309 static unsigned int get_update_flags( struct window *win, unsigned int flags )
1311 unsigned int ret = 0;
1313 if (flags & UPDATE_NONCLIENT)
1315 if ((win->paint_flags & PAINT_NONCLIENT) && win->update_region) ret |= UPDATE_NONCLIENT;
1317 if (flags & UPDATE_ERASE)
1319 if ((win->paint_flags & PAINT_ERASE) && win->update_region) ret |= UPDATE_ERASE;
1321 if (flags & UPDATE_PAINT)
1323 if (win->update_region)
1325 if (win->paint_flags & PAINT_DELAYED_ERASE) ret |= UPDATE_DELAYED_ERASE;
1326 ret |= UPDATE_PAINT;
1329 if (flags & UPDATE_INTERNALPAINT)
1331 if (win->paint_flags & PAINT_INTERNAL)
1333 ret |= UPDATE_INTERNALPAINT;
1334 if (win->paint_flags & PAINT_DELAYED_ERASE) ret |= UPDATE_DELAYED_ERASE;
1337 return ret;
1341 /* iterate through the children of the given window until we find one with some update flags */
1342 static unsigned int get_child_update_flags( struct window *win, struct window *from_child,
1343 unsigned int flags, struct window **child )
1345 struct window *ptr;
1346 unsigned int ret = 0;
1348 /* first make sure we want to iterate children at all */
1350 if (win->style & WS_MINIMIZE) return 0;
1352 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1353 * here we only want to repaint children of windows that clip them, others
1354 * need to wait for WM_PAINT to be done in the parent first.
1356 if (!(flags & UPDATE_ALLCHILDREN) && !(win->style & WS_CLIPCHILDREN)) return 0;
1358 LIST_FOR_EACH_ENTRY( ptr, &win->children, struct window, entry )
1360 if (from_child) /* skip all children until from_child is found */
1362 if (ptr == from_child) from_child = NULL;
1363 continue;
1365 if (!(ptr->style & WS_VISIBLE)) continue;
1366 if ((ret = get_update_flags( ptr, flags )) != 0)
1368 *child = ptr;
1369 break;
1371 if ((ret = get_child_update_flags( ptr, NULL, flags, child ))) break;
1373 return ret;
1376 /* iterate through children and siblings of the given window until we find one with some update flags */
1377 static unsigned int get_window_update_flags( struct window *win, struct window *from_child,
1378 unsigned int flags, struct window **child )
1380 unsigned int ret;
1381 struct window *ptr, *from_sibling = NULL;
1383 /* if some parent is not visible start from the next sibling */
1385 if (!is_visible( win )) return 0;
1386 for (ptr = from_child; ptr; ptr = ptr->parent)
1388 if (!(ptr->style & WS_VISIBLE) || (ptr->style & WS_MINIMIZE)) from_sibling = ptr;
1389 if (ptr == win) break;
1392 /* non-client painting must be delayed if one of the parents is going to
1393 * be repainted and doesn't clip children */
1395 if ((flags & UPDATE_NONCLIENT) && !(flags & (UPDATE_PAINT|UPDATE_INTERNALPAINT)))
1397 for (ptr = win->parent; ptr; ptr = ptr->parent)
1399 if (!(ptr->style & WS_CLIPCHILDREN) && win_needs_repaint( ptr ))
1400 return 0;
1402 if (from_child && !(flags & UPDATE_ALLCHILDREN))
1404 for (ptr = from_sibling ? from_sibling : from_child; ptr; ptr = ptr->parent)
1406 if (!(ptr->style & WS_CLIPCHILDREN) && win_needs_repaint( ptr )) from_sibling = ptr;
1407 if (ptr == win) break;
1413 /* check window itself (only if not restarting from a child) */
1415 if (!from_child)
1417 if ((ret = get_update_flags( win, flags )))
1419 *child = win;
1420 return ret;
1422 from_child = win;
1425 /* now check children */
1427 if (flags & UPDATE_NOCHILDREN) return 0;
1428 if (!from_sibling)
1430 if ((ret = get_child_update_flags( from_child, NULL, flags, child ))) return ret;
1431 from_sibling = from_child;
1434 /* then check siblings and parent siblings */
1436 while (from_sibling->parent && from_sibling != win)
1438 if ((ret = get_child_update_flags( from_sibling->parent, from_sibling, flags, child )))
1439 return ret;
1440 from_sibling = from_sibling->parent;
1442 return 0;
1446 /* expose the areas revealed by a vis region change on the window parent */
1447 /* returns the region exposed on the window itself (in client coordinates) */
1448 static struct region *expose_window( struct window *win, const rectangle_t *old_window_rect,
1449 struct region *old_vis_rgn )
1451 struct region *new_vis_rgn, *exposed_rgn;
1453 if (!(new_vis_rgn = get_visible_region( win, DCX_WINDOW ))) return NULL;
1455 if ((exposed_rgn = create_empty_region()))
1457 if (subtract_region( exposed_rgn, new_vis_rgn, old_vis_rgn ) && !is_region_empty( exposed_rgn ))
1459 /* make it relative to the new client area */
1460 offset_region( exposed_rgn, win->window_rect.left - win->client_rect.left,
1461 win->window_rect.top - win->client_rect.top );
1463 else
1465 free_region( exposed_rgn );
1466 exposed_rgn = NULL;
1470 if (win->parent)
1472 /* make it relative to the old window pos for subtracting */
1473 offset_region( new_vis_rgn, win->window_rect.left - old_window_rect->left,
1474 win->window_rect.top - old_window_rect->top );
1476 if ((win->parent->style & WS_CLIPCHILDREN) ?
1477 subtract_region( new_vis_rgn, old_vis_rgn, new_vis_rgn ) :
1478 xor_region( new_vis_rgn, old_vis_rgn, new_vis_rgn ))
1480 if (!is_region_empty( new_vis_rgn ))
1482 /* make it relative to parent */
1483 offset_region( new_vis_rgn, old_window_rect->left, old_window_rect->top );
1484 redraw_window( win->parent, new_vis_rgn, 0, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN );
1488 free_region( new_vis_rgn );
1489 return exposed_rgn;
1493 /* set the window and client rectangles, updating the update region if necessary */
1494 static void set_window_pos( struct window *win, struct window *previous,
1495 unsigned int swp_flags, const rectangle_t *window_rect,
1496 const rectangle_t *client_rect, const rectangle_t *valid_rects )
1498 struct region *old_vis_rgn = NULL, *exposed_rgn = NULL;
1499 const rectangle_t old_window_rect = win->window_rect;
1500 const rectangle_t old_client_rect = win->client_rect;
1501 rectangle_t rect;
1502 int client_changed, frame_changed;
1503 int visible = (win->style & WS_VISIBLE) || (swp_flags & SWP_SHOWWINDOW);
1505 if (win->parent && !is_visible( win->parent )) visible = 0;
1507 if (visible && !(old_vis_rgn = get_visible_region( win, DCX_WINDOW ))) return;
1509 /* set the new window info before invalidating anything */
1511 win->window_rect = *window_rect;
1512 win->client_rect = *client_rect;
1513 if (!(swp_flags & SWP_NOZORDER) && win->parent) link_window( win, previous );
1514 if (swp_flags & SWP_SHOWWINDOW) win->style |= WS_VISIBLE;
1515 else if (swp_flags & SWP_HIDEWINDOW) win->style &= ~WS_VISIBLE;
1517 /* assume the visible rect stays at the same offset from the window rect */
1518 win->visible_rect.left += window_rect->left - old_window_rect.left;
1519 win->visible_rect.top += window_rect->top - old_window_rect.top;
1520 win->visible_rect.right += window_rect->right - old_window_rect.right;
1521 win->visible_rect.bottom += window_rect->bottom - old_window_rect.bottom;
1522 /* but don't make it smaller than the client rect */
1523 if (win->visible_rect.left > client_rect->left)
1524 win->visible_rect.left = max( window_rect->left, client_rect->left );
1525 if (win->visible_rect.top > client_rect->top)
1526 win->visible_rect.top = max( window_rect->top, client_rect->top );
1527 if (win->visible_rect.right < client_rect->right)
1528 win->visible_rect.right = min( window_rect->right, client_rect->right );
1529 if (win->visible_rect.bottom < client_rect->bottom)
1530 win->visible_rect.bottom = min( window_rect->bottom, client_rect->bottom );
1532 /* if the window is not visible, everything is easy */
1533 if (!visible) return;
1535 /* expose anything revealed by the change */
1537 if (!(swp_flags & SWP_NOREDRAW))
1538 exposed_rgn = expose_window( win, &old_window_rect, old_vis_rgn );
1540 if (!(win->style & WS_VISIBLE))
1542 /* clear the update region since the window is no longer visible */
1543 validate_whole_window( win );
1544 validate_children( win );
1545 goto done;
1548 /* crop update region to the new window rect */
1550 if (win->update_region)
1552 if (get_window_visible_rect( win, &rect, 1 ))
1554 struct region *tmp = create_empty_region();
1555 if (tmp)
1557 set_region_rect( tmp, &rect );
1558 if (intersect_region( tmp, win->update_region, tmp ))
1559 set_update_region( win, tmp );
1560 else
1561 free_region( tmp );
1564 else set_update_region( win, NULL ); /* visible rect is empty */
1567 /* crop children regions to the new window rect */
1569 if (get_window_visible_rect( win, &rect, 0 ))
1571 /* map to client coords */
1572 offset_rect( &rect, win->window_rect.left - win->client_rect.left,
1573 win->window_rect.top - win->client_rect.top );
1574 crop_children_update_region( win, &rect );
1576 else crop_children_update_region( win, NULL );
1578 if (swp_flags & SWP_NOREDRAW) goto done; /* do not repaint anything */
1580 /* expose the whole non-client area if it changed in any way */
1582 if (swp_flags & SWP_NOCOPYBITS)
1584 frame_changed = ((swp_flags & SWP_FRAMECHANGED) ||
1585 memcmp( window_rect, &old_window_rect, sizeof(old_window_rect) ));
1586 client_changed = memcmp( client_rect, &old_client_rect, sizeof(old_client_rect) );
1588 else
1590 /* assume the bits have been moved to follow the window rect */
1591 int x_offset = window_rect->left - old_window_rect.left;
1592 int y_offset = window_rect->top - old_window_rect.top;
1593 frame_changed = ((swp_flags & SWP_FRAMECHANGED) ||
1594 window_rect->right - old_window_rect.right != x_offset ||
1595 window_rect->bottom - old_window_rect.bottom != y_offset);
1596 client_changed = (client_rect->left - old_client_rect.left != x_offset ||
1597 client_rect->right - old_client_rect.right != x_offset ||
1598 client_rect->top - old_client_rect.top != y_offset ||
1599 client_rect->bottom - old_client_rect.bottom != y_offset ||
1600 !valid_rects ||
1601 memcmp( &valid_rects[0], client_rect, sizeof(*client_rect) ));
1604 if (frame_changed || client_changed)
1606 struct region *win_rgn = old_vis_rgn; /* reuse previous region */
1608 set_region_rect( win_rgn, window_rect );
1609 if (valid_rects)
1611 /* subtract the valid portion of client rect from the total region */
1612 struct region *tmp = create_empty_region();
1613 if (tmp)
1615 set_region_rect( tmp, &valid_rects[0] );
1616 if (subtract_region( tmp, win_rgn, tmp )) win_rgn = tmp;
1617 else free_region( tmp );
1620 if (!is_desktop_window(win))
1621 offset_region( win_rgn, -client_rect->left, -client_rect->top );
1622 if (exposed_rgn)
1624 union_region( exposed_rgn, exposed_rgn, win_rgn );
1625 if (win_rgn != old_vis_rgn) free_region( win_rgn );
1627 else
1629 exposed_rgn = win_rgn;
1630 if (win_rgn == old_vis_rgn) old_vis_rgn = NULL;
1634 if (exposed_rgn)
1635 redraw_window( win, exposed_rgn, 1, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
1637 done:
1638 if (old_vis_rgn) free_region( old_vis_rgn );
1639 if (exposed_rgn) free_region( exposed_rgn );
1640 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1643 /* set the window visible rect */
1644 static void set_window_visible_rect( struct window *win, const rectangle_t *visible_rect,
1645 unsigned int swp_flags )
1647 struct region *old_vis_rgn = NULL, *exposed_rgn = NULL;
1648 const rectangle_t old_visible_rect = win->visible_rect;
1650 if (!memcmp( visible_rect, &old_visible_rect, sizeof(old_visible_rect) )) return;
1652 /* if the window is not visible, everything is easy */
1653 if (!is_visible( win ) || (swp_flags & SWP_NOREDRAW))
1655 win->visible_rect = *visible_rect;
1656 return;
1659 if (!(old_vis_rgn = get_visible_region( win, DCX_WINDOW ))) return;
1660 win->visible_rect = *visible_rect;
1662 /* expose anything revealed by the change */
1664 exposed_rgn = expose_window( win, &win->window_rect, old_vis_rgn );
1665 if (exposed_rgn)
1667 /* subtract the client rect from the total window rect */
1668 set_region_rect( exposed_rgn, &win->window_rect );
1669 set_region_rect( old_vis_rgn, &win->client_rect );
1670 if (subtract_region( exposed_rgn, exposed_rgn, old_vis_rgn ))
1672 if (!is_desktop_window(win))
1673 offset_region( exposed_rgn, -win->client_rect.left, -win->client_rect.top );
1674 redraw_window( win, exposed_rgn, 1, RDW_INVALIDATE | RDW_FRAME | RDW_NOCHILDREN );
1676 free_region( exposed_rgn );
1678 free_region( old_vis_rgn );
1679 clear_error(); /* we ignore out of memory errors once the new rect has been set */
1683 /* set the window region, updating the update region if necessary */
1684 static void set_window_region( struct window *win, struct region *region, int redraw )
1686 struct region *old_vis_rgn = NULL, *exposed_rgn;
1688 /* no need to redraw if window is not visible */
1689 if (redraw && !is_visible( win )) redraw = 0;
1691 if (redraw) old_vis_rgn = get_visible_region( win, DCX_WINDOW );
1693 if (win->win_region) free_region( win->win_region );
1694 win->win_region = region;
1696 /* expose anything revealed by the change */
1697 if (old_vis_rgn && ((exposed_rgn = expose_window( win, &win->window_rect, old_vis_rgn ))))
1699 redraw_window( win, exposed_rgn, 1, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
1700 free_region( exposed_rgn );
1703 if (old_vis_rgn) free_region( old_vis_rgn );
1704 clear_error(); /* we ignore out of memory errors since the region has been set */
1708 /* create a window */
1709 DECL_HANDLER(create_window)
1711 struct window *win, *parent, *owner = NULL;
1712 atom_t atom;
1714 reply->handle = 0;
1716 if (!req->parent) parent = get_desktop_window( current, 0 );
1717 else if (!(parent = get_window( req->parent ))) return;
1719 if (req->owner)
1721 if (!(owner = get_window( req->owner ))) return;
1722 if (is_desktop_window(owner)) owner = NULL;
1723 else if (!is_desktop_window(parent))
1725 /* an owned window must be created as top-level */
1726 set_error( STATUS_ACCESS_DENIED );
1727 return;
1729 else /* owner must be a top-level window */
1730 while (!is_desktop_window(owner->parent)) owner = owner->parent;
1733 if (get_req_data_size())
1734 atom = find_global_atom( NULL, get_req_data(), get_req_data_size() / sizeof(WCHAR) );
1735 else
1736 atom = req->atom;
1738 if (!(win = create_window( parent, owner, atom, req->instance ))) return;
1740 reply->handle = win->handle;
1741 reply->parent = win->parent ? win->parent->handle : 0;
1742 reply->owner = win->owner;
1743 reply->extra = win->nb_extra_bytes;
1744 reply->class_ptr = get_class_client_ptr( win->class );
1748 /* set the parent of a window */
1749 DECL_HANDLER(set_parent)
1751 struct window *win, *parent = NULL;
1753 if (!(win = get_window( req->handle ))) return;
1754 if (req->parent && !(parent = get_window( req->parent ))) return;
1756 if (is_desktop_window(win))
1758 set_error( STATUS_INVALID_PARAMETER );
1759 return;
1761 reply->old_parent = win->parent->handle;
1762 reply->full_parent = parent ? parent->handle : 0;
1763 set_parent_window( win, parent );
1767 /* destroy a window */
1768 DECL_HANDLER(destroy_window)
1770 struct window *win = get_window( req->handle );
1771 if (win)
1773 if (!is_desktop_window(win)) destroy_window( win );
1774 else if (win->thread == current) detach_window_thread( win );
1775 else set_error( STATUS_ACCESS_DENIED );
1780 /* retrieve the desktop window for the current thread */
1781 DECL_HANDLER(get_desktop_window)
1783 struct window *win = get_desktop_window( current, req->force );
1785 if (win) reply->handle = win->handle;
1789 /* set a window owner */
1790 DECL_HANDLER(set_window_owner)
1792 struct window *win = get_window( req->handle );
1793 struct window *owner = NULL;
1795 if (!win) return;
1796 if (req->owner && !(owner = get_window( req->owner ))) return;
1797 if (is_desktop_window(win))
1799 set_error( STATUS_ACCESS_DENIED );
1800 return;
1802 reply->prev_owner = win->owner;
1803 reply->full_owner = win->owner = owner ? owner->handle : 0;
1807 /* get information from a window handle */
1808 DECL_HANDLER(get_window_info)
1810 struct window *win = get_window( req->handle );
1812 reply->full_handle = 0;
1813 reply->tid = reply->pid = 0;
1814 if (win)
1816 reply->full_handle = win->handle;
1817 reply->last_active = win->handle;
1818 reply->is_unicode = win->is_unicode;
1819 if (get_user_object( win->last_active, USER_WINDOW )) reply->last_active = win->last_active;
1820 if (win->thread)
1822 reply->tid = get_thread_id( win->thread );
1823 reply->pid = get_process_id( win->thread->process );
1824 reply->atom = win->class ? get_class_atom( win->class ) : DESKTOP_ATOM;
1830 /* set some information in a window */
1831 DECL_HANDLER(set_window_info)
1833 struct window *win = get_window( req->handle );
1835 if (!win) return;
1836 if (req->flags && is_desktop_window(win) && win->thread != current)
1838 set_error( STATUS_ACCESS_DENIED );
1839 return;
1841 if (req->extra_size > sizeof(req->extra_value) ||
1842 req->extra_offset < -1 ||
1843 req->extra_offset > win->nb_extra_bytes - (int)req->extra_size)
1845 set_win32_error( ERROR_INVALID_INDEX );
1846 return;
1848 if (req->extra_offset != -1)
1850 memcpy( &reply->old_extra_value, win->extra_bytes + req->extra_offset, req->extra_size );
1852 else if (req->flags & SET_WIN_EXTRA)
1854 set_win32_error( ERROR_INVALID_INDEX );
1855 return;
1857 reply->old_style = win->style;
1858 reply->old_ex_style = win->ex_style;
1859 reply->old_id = win->id;
1860 reply->old_instance = win->instance;
1861 reply->old_user_data = win->user_data;
1862 if (req->flags & SET_WIN_STYLE) win->style = req->style;
1863 if (req->flags & SET_WIN_EXSTYLE)
1865 /* WS_EX_TOPMOST can only be changed for unlinked windows */
1866 if (!win->is_linked) win->ex_style = req->ex_style;
1867 else win->ex_style = (req->ex_style & ~WS_EX_TOPMOST) | (win->ex_style & WS_EX_TOPMOST);
1869 if (req->flags & SET_WIN_ID) win->id = req->id;
1870 if (req->flags & SET_WIN_INSTANCE) win->instance = req->instance;
1871 if (req->flags & SET_WIN_UNICODE) win->is_unicode = req->is_unicode;
1872 if (req->flags & SET_WIN_USERDATA) win->user_data = req->user_data;
1873 if (req->flags & SET_WIN_EXTRA) memcpy( win->extra_bytes + req->extra_offset,
1874 &req->extra_value, req->extra_size );
1876 /* changing window style triggers a non-client paint */
1877 if (req->flags & SET_WIN_STYLE) win->paint_flags |= PAINT_NONCLIENT;
1881 /* get a list of the window parents, up to the root of the tree */
1882 DECL_HANDLER(get_window_parents)
1884 struct window *ptr, *win = get_window( req->handle );
1885 int total = 0;
1886 user_handle_t *data;
1887 data_size_t len;
1889 if (win) for (ptr = win->parent; ptr; ptr = ptr->parent) total++;
1891 reply->count = total;
1892 len = min( get_reply_max_size(), total * sizeof(user_handle_t) );
1893 if (len && ((data = set_reply_data_size( len ))))
1895 for (ptr = win->parent; ptr && len; ptr = ptr->parent, len -= sizeof(*data))
1896 *data++ = ptr->handle;
1901 /* get a list of the window children */
1902 DECL_HANDLER(get_window_children)
1904 struct window *ptr, *parent;
1905 int total = 0;
1906 user_handle_t *data;
1907 data_size_t len;
1908 atom_t atom = req->atom;
1910 if (req->desktop)
1912 struct desktop *desktop = get_desktop_obj( current->process, req->desktop, DESKTOP_ENUMERATE );
1913 if (!desktop) return;
1914 parent = desktop->top_window;
1915 release_object( desktop );
1917 else parent = get_window( req->parent );
1919 if (!parent) return;
1921 if (get_req_data_size())
1923 atom = find_global_atom( NULL, get_req_data(), get_req_data_size() / sizeof(WCHAR) );
1924 if (!atom) return;
1927 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
1929 if (atom && get_class_atom(ptr->class) != atom) continue;
1930 if (req->tid && get_thread_id(ptr->thread) != req->tid) continue;
1931 total++;
1933 reply->count = total;
1934 len = min( get_reply_max_size(), total * sizeof(user_handle_t) );
1935 if (len && ((data = set_reply_data_size( len ))))
1937 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
1939 if (len < sizeof(*data)) break;
1940 if (atom && get_class_atom(ptr->class) != atom) continue;
1941 if (req->tid && get_thread_id(ptr->thread) != req->tid) continue;
1942 *data++ = ptr->handle;
1943 len -= sizeof(*data);
1949 /* get a list of the window children that contain a given point */
1950 DECL_HANDLER(get_window_children_from_point)
1952 struct user_handle_array array;
1953 struct window *parent = get_window( req->parent );
1954 data_size_t len;
1956 if (!parent) return;
1958 array.handles = NULL;
1959 array.count = 0;
1960 array.total = 0;
1961 if (!all_windows_from_point( parent, req->x, req->y, &array )) return;
1963 reply->count = array.count;
1964 len = min( get_reply_max_size(), array.count * sizeof(user_handle_t) );
1965 if (len) set_reply_data_ptr( array.handles, len );
1966 else free( array.handles );
1970 /* get window tree information from a window handle */
1971 DECL_HANDLER(get_window_tree)
1973 struct window *ptr, *win = get_window( req->handle );
1975 if (!win) return;
1977 reply->parent = 0;
1978 reply->owner = 0;
1979 reply->next_sibling = 0;
1980 reply->prev_sibling = 0;
1981 reply->first_sibling = 0;
1982 reply->last_sibling = 0;
1983 reply->first_child = 0;
1984 reply->last_child = 0;
1986 if (win->parent)
1988 struct window *parent = win->parent;
1989 reply->parent = parent->handle;
1990 reply->owner = win->owner;
1991 if (win->is_linked)
1993 if ((ptr = get_next_window( win ))) reply->next_sibling = ptr->handle;
1994 if ((ptr = get_prev_window( win ))) reply->prev_sibling = ptr->handle;
1996 if ((ptr = get_first_child( parent ))) reply->first_sibling = ptr->handle;
1997 if ((ptr = get_last_child( parent ))) reply->last_sibling = ptr->handle;
1999 if ((ptr = get_first_child( win ))) reply->first_child = ptr->handle;
2000 if ((ptr = get_last_child( win ))) reply->last_child = ptr->handle;
2004 /* set the position and Z order of a window */
2005 DECL_HANDLER(set_window_pos)
2007 const rectangle_t *valid_rects = NULL;
2008 struct window *previous = NULL;
2009 struct window *win = get_window( req->handle );
2010 unsigned int flags = req->flags;
2012 if (!win) return;
2013 if (!win->parent) flags |= SWP_NOZORDER; /* no Z order for the desktop */
2015 if (!(flags & SWP_NOZORDER))
2017 switch ((int)(unsigned long)req->previous)
2019 case 0: /* HWND_TOP */
2020 previous = WINPTR_TOP;
2021 break;
2022 case 1: /* HWND_BOTTOM */
2023 previous = WINPTR_BOTTOM;
2024 break;
2025 case -1: /* HWND_TOPMOST */
2026 previous = WINPTR_TOPMOST;
2027 break;
2028 case -2: /* HWND_NOTOPMOST */
2029 previous = WINPTR_NOTOPMOST;
2030 break;
2031 default:
2032 if (!(previous = get_window( req->previous ))) return;
2033 /* previous must be a sibling */
2034 if (previous->parent != win->parent)
2036 set_error( STATUS_INVALID_PARAMETER );
2037 return;
2039 break;
2041 if (previous == win) flags |= SWP_NOZORDER; /* nothing to do */
2044 /* window rectangle must be ordered properly */
2045 if (req->window.right < req->window.left || req->window.bottom < req->window.top)
2047 set_error( STATUS_INVALID_PARAMETER );
2048 return;
2051 if (get_req_data_size() >= 2 * sizeof(rectangle_t)) valid_rects = get_req_data();
2052 set_window_pos( win, previous, flags, &req->window, &req->client, valid_rects );
2053 reply->new_style = win->style;
2054 reply->new_ex_style = win->ex_style;
2055 reply->visible = win->visible_rect;
2059 /* set the visible rectangle of a window */
2060 DECL_HANDLER(set_window_visible_rect)
2062 struct window *win = get_window( req->handle );
2063 if (win) set_window_visible_rect( win, &req->visible, req->flags );
2067 /* get the window and client rectangles of a window */
2068 DECL_HANDLER(get_window_rectangles)
2070 struct window *win = get_window( req->handle );
2072 if (win)
2074 reply->window = win->window_rect;
2075 reply->visible = win->visible_rect;
2076 reply->client = win->client_rect;
2081 /* get the window text */
2082 DECL_HANDLER(get_window_text)
2084 struct window *win = get_window( req->handle );
2086 if (win && win->text)
2088 data_size_t len = strlenW( win->text ) * sizeof(WCHAR);
2089 if (len > get_reply_max_size()) len = get_reply_max_size();
2090 set_reply_data( win->text, len );
2095 /* set the window text */
2096 DECL_HANDLER(set_window_text)
2098 struct window *win = get_window( req->handle );
2100 if (win)
2102 WCHAR *text = NULL;
2103 data_size_t len = get_req_data_size() / sizeof(WCHAR);
2104 if (len)
2106 if (!(text = mem_alloc( (len+1) * sizeof(WCHAR) ))) return;
2107 memcpy( text, get_req_data(), len * sizeof(WCHAR) );
2108 text[len] = 0;
2110 free( win->text );
2111 win->text = text;
2116 /* get the coordinates offset between two windows */
2117 DECL_HANDLER(get_windows_offset)
2119 struct window *win;
2121 reply->x = reply->y = 0;
2122 if (req->from)
2124 if (!(win = get_window( req->from ))) return;
2125 while (win && !is_desktop_window(win))
2127 reply->x += win->client_rect.left;
2128 reply->y += win->client_rect.top;
2129 win = win->parent;
2132 if (req->to)
2134 if (!(win = get_window( req->to ))) return;
2135 while (win && !is_desktop_window(win))
2137 reply->x -= win->client_rect.left;
2138 reply->y -= win->client_rect.top;
2139 win = win->parent;
2145 /* get the visible region of a window */
2146 DECL_HANDLER(get_visible_region)
2148 struct region *region;
2149 struct window *top, *win = get_window( req->window );
2151 if (!win) return;
2153 top = get_top_clipping_window( win );
2154 if ((region = get_visible_region( win, req->flags )))
2156 rectangle_t *data;
2157 map_win_region_to_screen( win, region );
2158 data = get_region_data_and_free( region, get_reply_max_size(), &reply->total_size );
2159 if (data) set_reply_data_ptr( data, reply->total_size );
2161 reply->top_win = top->handle;
2162 reply->top_rect = (top == win && (req->flags & DCX_WINDOW)) ? top->visible_rect : top->client_rect;
2164 if (!is_desktop_window(win))
2166 reply->win_rect = (req->flags & DCX_WINDOW) ? win->window_rect : win->client_rect;
2167 client_to_screen_rect( top->parent, &reply->top_rect );
2168 client_to_screen_rect( win->parent, &reply->win_rect );
2170 else
2172 reply->win_rect.left = 0;
2173 reply->win_rect.top = 0;
2174 reply->win_rect.right = win->client_rect.right - win->client_rect.left;
2175 reply->win_rect.bottom = win->client_rect.bottom - win->client_rect.top;
2180 /* get the window region */
2181 DECL_HANDLER(get_window_region)
2183 struct window *win = get_window( req->window );
2185 if (!win) return;
2187 if (win->win_region)
2189 rectangle_t *data = get_region_data( win->win_region, get_reply_max_size(), &reply->total_size );
2190 if (data) set_reply_data_ptr( data, reply->total_size );
2195 /* set the window region */
2196 DECL_HANDLER(set_window_region)
2198 struct region *region = NULL;
2199 struct window *win = get_window( req->window );
2201 if (!win) return;
2203 if (get_req_data_size()) /* no data means remove the region completely */
2205 if (!(region = create_region_from_req_data( get_req_data(), get_req_data_size() )))
2206 return;
2208 set_window_region( win, region, req->redraw );
2212 /* get a window update region */
2213 DECL_HANDLER(get_update_region)
2215 rectangle_t *data;
2216 unsigned int flags = req->flags;
2217 struct window *from_child = NULL;
2218 struct window *win = get_window( req->window );
2220 reply->flags = 0;
2221 if (!win) return;
2223 if (req->from_child)
2225 struct window *ptr;
2227 if (!(from_child = get_window( req->from_child ))) return;
2229 /* make sure from_child is a child of win */
2230 ptr = from_child;
2231 while (ptr && ptr != win) ptr = ptr->parent;
2232 if (!ptr)
2234 set_error( STATUS_INVALID_PARAMETER );
2235 return;
2239 if (flags & UPDATE_DELAYED_ERASE) /* this means that the previous call didn't erase */
2241 if (from_child) from_child->paint_flags |= PAINT_DELAYED_ERASE;
2242 else win->paint_flags |= PAINT_DELAYED_ERASE;
2245 reply->flags = get_window_update_flags( win, from_child, flags, &win );
2246 reply->child = win->handle;
2248 if (flags & UPDATE_NOREGION) return;
2250 if (win->update_region)
2252 /* convert update region to screen coordinates */
2253 struct region *region = create_empty_region();
2255 if (!region) return;
2256 if (!copy_region( region, win->update_region ))
2258 free_region( region );
2259 return;
2261 map_win_region_to_screen( win, region );
2262 if (!(data = get_region_data_and_free( region, get_reply_max_size(),
2263 &reply->total_size ))) return;
2264 set_reply_data_ptr( data, reply->total_size );
2267 if (reply->flags & (UPDATE_PAINT|UPDATE_INTERNALPAINT)) /* validate everything */
2269 validate_parents( win );
2270 validate_whole_window( win );
2272 else
2274 if (reply->flags & UPDATE_NONCLIENT) validate_non_client( win );
2275 if (reply->flags & UPDATE_ERASE)
2277 win->paint_flags &= ~(PAINT_ERASE | PAINT_DELAYED_ERASE);
2278 /* desktop window only gets erased, not repainted */
2279 if (is_desktop_window(win)) validate_whole_window( win );
2285 /* update the z order of a window so that a given rectangle is fully visible */
2286 DECL_HANDLER(update_window_zorder)
2288 rectangle_t tmp;
2289 struct window *ptr, *win = get_window( req->window );
2291 if (!win || !win->parent || !is_visible( win )) return; /* nothing to do */
2293 LIST_FOR_EACH_ENTRY( ptr, &win->parent->children, struct window, entry )
2295 if (ptr == win) break;
2296 if (!(ptr->style & WS_VISIBLE)) continue;
2297 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
2298 if (!intersect_rect( &tmp, &ptr->visible_rect, &req->rect )) continue;
2299 if (ptr->win_region && !rect_in_region( ptr->win_region, &req->rect )) continue;
2300 /* found a window obscuring the rectangle, now move win above this one */
2301 /* making sure to not violate the topmost rule */
2302 if (!(ptr->ex_style & WS_EX_TOPMOST) || (win->ex_style & WS_EX_TOPMOST))
2304 list_remove( &win->entry );
2305 list_add_before( &ptr->entry, &win->entry );
2307 break;
2312 /* mark parts of a window as needing a redraw */
2313 DECL_HANDLER(redraw_window)
2315 struct region *region = NULL;
2316 struct window *win = get_window( req->window );
2318 if (!win) return;
2319 if (!is_visible( win )) return; /* nothing to do */
2321 if (req->flags & (RDW_VALIDATE|RDW_INVALIDATE))
2323 if (get_req_data_size()) /* no data means whole rectangle */
2325 if (!(region = create_region_from_req_data( get_req_data(), get_req_data_size() )))
2326 return;
2330 redraw_window( win, region, (req->flags & RDW_INVALIDATE) && (req->flags & RDW_FRAME),
2331 req->flags );
2332 if (region) free_region( region );
2336 /* set a window property */
2337 DECL_HANDLER(set_window_property)
2339 struct window *win = get_window( req->window );
2341 if (!win) return;
2343 if (get_req_data_size())
2345 atom_t atom = add_global_atom( NULL, get_req_data(), get_req_data_size() / sizeof(WCHAR) );
2346 if (atom)
2348 set_property( win, atom, req->handle, PROP_TYPE_STRING );
2349 release_global_atom( NULL, atom );
2352 else set_property( win, req->atom, req->handle, PROP_TYPE_ATOM );
2356 /* remove a window property */
2357 DECL_HANDLER(remove_window_property)
2359 struct window *win = get_window( req->window );
2361 if (win)
2363 atom_t atom = req->atom;
2364 if (get_req_data_size()) atom = find_global_atom( NULL, get_req_data(),
2365 get_req_data_size() / sizeof(WCHAR) );
2366 if (atom) reply->handle = remove_property( win, atom );
2371 /* get a window property */
2372 DECL_HANDLER(get_window_property)
2374 struct window *win = get_window( req->window );
2376 if (win)
2378 atom_t atom = req->atom;
2379 if (get_req_data_size()) atom = find_global_atom( NULL, get_req_data(),
2380 get_req_data_size() / sizeof(WCHAR) );
2381 if (atom) reply->handle = get_property( win, atom );
2386 /* get the list of properties of a window */
2387 DECL_HANDLER(get_window_properties)
2389 property_data_t *data;
2390 int i, count, max = get_reply_max_size() / sizeof(*data);
2391 struct window *win = get_window( req->window );
2393 reply->total = 0;
2394 if (!win) return;
2396 for (i = count = 0; i < win->prop_inuse; i++)
2397 if (win->properties[i].type != PROP_TYPE_FREE) count++;
2398 reply->total = count;
2400 if (count > max) count = max;
2401 if (!count || !(data = set_reply_data_size( count * sizeof(*data) ))) return;
2403 for (i = 0; i < win->prop_inuse && count; i++)
2405 if (win->properties[i].type == PROP_TYPE_FREE) continue;
2406 data->atom = win->properties[i].atom;
2407 data->string = (win->properties[i].type == PROP_TYPE_STRING);
2408 data->handle = win->properties[i].handle;
2409 data++;
2410 count--;
2415 /* get the new window pointer for a global window, checking permissions */
2416 /* helper for set_global_windows request */
2417 static int get_new_global_window( struct window **win, user_handle_t handle )
2419 if (!handle)
2421 *win = NULL;
2422 return 1;
2424 else if (*win)
2426 set_error( STATUS_ACCESS_DENIED );
2427 return 0;
2429 *win = get_window( handle );
2430 return (*win != NULL);
2433 /* Set/get the global windows */
2434 DECL_HANDLER(set_global_windows)
2436 struct window *new_shell_window = shell_window;
2437 struct window *new_shell_listview = shell_listview;
2438 struct window *new_progman_window = progman_window;
2439 struct window *new_taskman_window = taskman_window;
2441 reply->old_shell_window = shell_window ? shell_window->handle : 0;
2442 reply->old_shell_listview = shell_listview ? shell_listview->handle : 0;
2443 reply->old_progman_window = progman_window ? progman_window->handle : 0;
2444 reply->old_taskman_window = taskman_window ? taskman_window->handle : 0;
2446 if (req->flags & SET_GLOBAL_SHELL_WINDOWS)
2448 if (!get_new_global_window( &new_shell_window, req->shell_window )) return;
2449 if (!get_new_global_window( &new_shell_listview, req->shell_listview )) return;
2451 if (req->flags & SET_GLOBAL_PROGMAN_WINDOW)
2453 if (!get_new_global_window( &new_progman_window, req->progman_window )) return;
2455 if (req->flags & SET_GLOBAL_TASKMAN_WINDOW)
2457 if (!get_new_global_window( &new_taskman_window, req->taskman_window )) return;
2459 shell_window = new_shell_window;
2460 shell_listview = new_shell_listview;
2461 progman_window = new_progman_window;
2462 taskman_window = new_taskman_window;