2 * Server-side window handling
4 * Copyright (C) 2001 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
39 /* a window property */
42 unsigned short type; /* property type (see below) */
43 atom_t atom; /* property atom */
44 obj_handle_t handle; /* property handle (user-defined storage) */
49 PROP_TYPE_FREE, /* free entry */
50 PROP_TYPE_STRING, /* atom that was originally a string */
51 PROP_TYPE_ATOM /* plain atom */
57 struct window *parent; /* parent window */
58 user_handle_t owner; /* owner of this window */
59 struct list children; /* list of children in Z-order */
60 struct list unlinked; /* list of children not linked in the Z-order list */
61 struct list entry; /* entry in parent's children list */
62 user_handle_t handle; /* full handle for this window */
63 struct thread *thread; /* thread owning the window */
64 struct window_class *class; /* window class */
65 atom_t atom; /* class atom */
66 user_handle_t last_active; /* last active popup */
67 rectangle_t window_rect; /* window rectangle (relative to parent client area) */
68 rectangle_t visible_rect; /* visible part of window rect (relative to parent client area) */
69 rectangle_t client_rect; /* client rectangle (relative to parent client area) */
70 struct region *win_region; /* region for shaped windows (relative to window rect) */
71 struct region *update_region; /* update region (relative to window rect) */
72 unsigned int style; /* window style */
73 unsigned int ex_style; /* window extended style */
74 unsigned int id; /* window id */
75 void* instance; /* creator instance */
76 void* user_data; /* user-specific data */
77 WCHAR *text; /* window caption text */
78 unsigned int paint_flags; /* various painting flags */
79 int prop_inuse; /* number of in-use window properties */
80 int prop_alloc; /* number of allocated window properties */
81 struct property *properties; /* window properties array */
82 int nb_extra_bytes; /* number of extra bytes */
83 char extra_bytes[1]; /* extra bytes storage */
86 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
87 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
88 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
90 /* growable array of user handles */
91 struct user_handle_array
93 user_handle_t *handles;
98 static struct window *top_window; /* top-level (desktop) window */
100 /* global window pointers */
101 static struct window *shell_window;
102 static struct window *shell_listview;
103 static struct window *progman_window;
104 static struct window *taskman_window;
106 /* retrieve a pointer to a window from its handle */
107 inline static struct window *get_window( user_handle_t handle )
109 struct window *ret = get_user_object( handle, USER_WINDOW );
110 if (!ret) set_error( STATUS_INVALID_HANDLE );
114 /* change the parent of a window (or unlink the window if the new parent is NULL) */
115 static int set_parent_window( struct window *win, struct window *parent )
119 /* make sure parent is not a child of window */
120 for (ptr = parent; ptr; ptr = ptr->parent)
124 set_error( STATUS_INVALID_PARAMETER );
129 list_remove( &win->entry ); /* unlink it from the previous location */
133 win->parent = parent;
134 list_add_head( &parent->children, &win->entry );
136 /* if parent belongs to a different thread, attach the two threads */
137 if (parent->thread && parent->thread != win->thread)
138 attach_thread_input( win->thread, parent->thread );
140 else /* move it to parent unlinked list */
142 list_add_head( &win->parent->unlinked, &win->entry );
147 /* get next window in Z-order list */
148 static inline struct window *get_next_window( struct window *win )
150 struct list *ptr = list_next( &win->parent->children, &win->entry );
151 if (ptr == &win->parent->unlinked) ptr = NULL;
152 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
155 /* get previous window in Z-order list */
156 static inline struct window *get_prev_window( struct window *win )
158 struct list *ptr = list_prev( &win->parent->children, &win->entry );
159 if (ptr == &win->parent->unlinked) ptr = NULL;
160 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
163 /* get first child in Z-order list */
164 static inline struct window *get_first_child( struct window *win )
166 struct list *ptr = list_head( &win->children );
167 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
170 /* get last child in Z-order list */
171 static inline struct window *get_last_child( struct window *win )
173 struct list *ptr = list_tail( &win->children );
174 return ptr ? LIST_ENTRY( ptr, struct window, entry ) : NULL;
177 /* append a user handle to a handle array */
178 static int add_handle_to_array( struct user_handle_array *array, user_handle_t handle )
180 if (array->count >= array->total)
182 int new_total = max( array->total * 2, 32 );
183 user_handle_t *new_array = realloc( array->handles, new_total * sizeof(*new_array) );
186 free( array->handles );
187 set_error( STATUS_NO_MEMORY );
190 array->handles = new_array;
191 array->total = new_total;
193 array->handles[array->count++] = handle;
197 /* set a window property */
198 static void set_property( struct window *win, atom_t atom, obj_handle_t handle,
199 enum property_type type )
202 struct property *new_props;
204 /* check if it exists already */
205 for (i = 0; i < win->prop_inuse; i++)
207 if (win->properties[i].type == PROP_TYPE_FREE)
212 if (win->properties[i].atom == atom)
214 win->properties[i].type = type;
215 win->properties[i].handle = handle;
220 /* need to add an entry */
221 if (!grab_global_atom( atom )) return;
225 if (win->prop_inuse >= win->prop_alloc)
227 /* need to grow the array */
228 if (!(new_props = realloc( win->properties,
229 sizeof(*new_props) * (win->prop_alloc + 16) )))
231 set_error( STATUS_NO_MEMORY );
232 release_global_atom( atom );
235 win->prop_alloc += 16;
236 win->properties = new_props;
238 free = win->prop_inuse++;
240 win->properties[free].atom = atom;
241 win->properties[free].type = type;
242 win->properties[free].handle = handle;
245 /* remove a window property */
246 static obj_handle_t remove_property( struct window *win, atom_t atom )
250 for (i = 0; i < win->prop_inuse; i++)
252 if (win->properties[i].type == PROP_TYPE_FREE) continue;
253 if (win->properties[i].atom == atom)
255 release_global_atom( atom );
256 win->properties[i].type = PROP_TYPE_FREE;
257 return win->properties[i].handle;
260 /* FIXME: last error? */
264 /* find a window property */
265 static obj_handle_t get_property( struct window *win, atom_t atom )
269 for (i = 0; i < win->prop_inuse; i++)
271 if (win->properties[i].type == PROP_TYPE_FREE) continue;
272 if (win->properties[i].atom == atom) return win->properties[i].handle;
274 /* FIXME: last error? */
278 /* destroy all properties of a window */
279 inline static void destroy_properties( struct window *win )
283 if (!win->properties) return;
284 for (i = 0; i < win->prop_inuse; i++)
286 if (win->properties[i].type == PROP_TYPE_FREE) continue;
287 release_global_atom( win->properties[i].atom );
289 free( win->properties );
292 /* destroy a window */
293 static void destroy_window( struct window *win )
295 assert( win != top_window );
297 /* destroy all children */
298 while (!list_empty(&win->children))
299 destroy_window( LIST_ENTRY( list_head(&win->children), struct window, entry ));
300 while (!list_empty(&win->unlinked))
301 destroy_window( LIST_ENTRY( list_head(&win->unlinked), struct window, entry ));
303 if (win->thread->queue)
305 if (win->update_region) inc_queue_paint_count( win->thread, -1 );
306 if (win->paint_flags & PAINT_INTERNAL) inc_queue_paint_count( win->thread, -1 );
307 queue_cleanup_window( win->thread, win->handle );
309 /* reset global window pointers, if the corresponding window is destroyed */
310 if (win == shell_window) shell_window = NULL;
311 if (win == shell_listview) shell_listview = NULL;
312 if (win == progman_window) progman_window = NULL;
313 if (win == taskman_window) taskman_window = NULL;
314 free_user_handle( win->handle );
315 destroy_properties( win );
316 list_remove( &win->entry );
317 if (win->win_region) free_region( win->win_region );
318 if (win->update_region) free_region( win->update_region );
319 release_class( win->class );
320 if (win->text) free( win->text );
321 memset( win, 0x55, sizeof(*win) + win->nb_extra_bytes - 1 );
325 /* create a new window structure (note: the window is not linked in the window tree) */
326 static struct window *create_window( struct window *parent, struct window *owner,
327 atom_t atom, void *instance )
331 struct window_class *class = grab_class( current->process, atom, instance, &extra_bytes );
333 if (!class) return NULL;
335 win = mem_alloc( sizeof(*win) + extra_bytes - 1 );
338 release_class( class );
341 if (!(win->handle = alloc_user_handle( win, USER_WINDOW ))) goto failed;
343 win->parent = parent;
344 win->owner = owner ? owner->handle : 0;
345 win->thread = current;
348 win->last_active = win->handle;
349 win->win_region = NULL;
350 win->update_region = NULL;
354 win->instance = NULL;
355 win->user_data = NULL;
357 win->paint_flags = 0;
360 win->properties = NULL;
361 win->nb_extra_bytes = extra_bytes;
362 memset( win->extra_bytes, 0, extra_bytes );
363 list_init( &win->children );
364 list_init( &win->unlinked );
366 /* if parent belongs to a different thread, attach the two threads */
367 if (parent && parent->thread && parent->thread != current)
369 if (!attach_thread_input( current, parent->thread )) goto failed;
371 else /* otherwise just make sure that the thread has a message queue */
373 if (!current->queue && !init_thread_queue( current )) goto failed;
376 /* put it on parent unlinked list */
377 if (parent) list_add_head( &parent->unlinked, &win->entry );
382 if (win->handle) free_user_handle( win->handle );
383 release_class( class );
388 /* destroy all windows belonging to a given thread */
389 void destroy_thread_windows( struct thread *thread )
391 user_handle_t handle = 0;
394 while ((win = next_user_handle( &handle, USER_WINDOW )))
396 if (win->thread != thread) continue;
397 destroy_window( win );
401 /* check whether child is a descendant of parent */
402 int is_child_window( user_handle_t parent, user_handle_t child )
404 struct window *child_ptr = get_user_object( child, USER_WINDOW );
405 struct window *parent_ptr = get_user_object( parent, USER_WINDOW );
407 if (!child_ptr || !parent_ptr) return 0;
408 while (child_ptr->parent)
410 if (child_ptr->parent == parent_ptr) return 1;
411 child_ptr = child_ptr->parent;
416 /* check whether window is a top-level window */
417 int is_top_level_window( user_handle_t window )
419 struct window *win = get_user_object( window, USER_WINDOW );
420 return (win && win->parent == top_window);
423 /* make a window active if possible */
424 int make_window_active( user_handle_t window )
426 struct window *owner, *win = get_window( window );
430 /* set last active for window and its owner */
431 win->last_active = win->handle;
432 if ((owner = get_user_object( win->owner, USER_WINDOW ))) owner->last_active = win->handle;
436 /* increment (or decrement) the window paint count */
437 static inline void inc_window_paint_count( struct window *win, int incr )
439 if (win->thread) inc_queue_paint_count( win->thread, incr );
442 /* check if window and all its ancestors are visible */
443 static int is_visible( const struct window *win )
445 while (win && win != top_window)
447 if (!(win->style & WS_VISIBLE)) return 0;
449 /* if parent is minimized children are not visible */
450 if (win && (win->style & WS_MINIMIZE)) return 0;
455 /* same as is_visible but takes a window handle */
456 int is_window_visible( user_handle_t window )
458 struct window *win = get_user_object( window, USER_WINDOW );
460 return is_visible( win );
463 /* check if point is inside the window */
464 static inline int is_point_in_window( struct window *win, int x, int y )
466 if (!(win->style & WS_VISIBLE)) return 0; /* not visible */
467 if ((win->style & (WS_POPUP|WS_CHILD|WS_DISABLED)) == (WS_CHILD|WS_DISABLED))
468 return 0; /* disabled child */
469 if ((win->ex_style & (WS_EX_LAYERED|WS_EX_TRANSPARENT)) == (WS_EX_LAYERED|WS_EX_TRANSPARENT))
470 return 0; /* transparent */
471 if (x < win->visible_rect.left || x >= win->visible_rect.right ||
472 y < win->visible_rect.top || y >= win->visible_rect.bottom)
473 return 0; /* not in window */
474 if (win->win_region &&
475 !point_in_region( win->win_region, x - win->window_rect.left, y - win->window_rect.top ))
476 return 0; /* not in window region */
480 /* find child of 'parent' that contains the given point (in parent-relative coords) */
481 static struct window *child_window_from_point( struct window *parent, int x, int y )
485 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
487 if (!is_point_in_window( ptr, x, y )) continue; /* skip it */
489 /* if window is minimized or disabled, return at once */
490 if (ptr->style & (WS_MINIMIZE|WS_DISABLED)) return ptr;
492 /* if point is not in client area, return at once */
493 if (x < ptr->client_rect.left || x >= ptr->client_rect.right ||
494 y < ptr->client_rect.top || y >= ptr->client_rect.bottom)
497 return child_window_from_point( ptr, x - ptr->client_rect.left, y - ptr->client_rect.top );
499 return parent; /* not found any child */
502 /* find all children of 'parent' that contain the given point */
503 static int get_window_children_from_point( struct window *parent, int x, int y,
504 struct user_handle_array *array )
508 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
510 if (!is_point_in_window( ptr, x, y )) continue; /* skip it */
512 /* if point is in client area, and window is not minimized or disabled, check children */
513 if (!(ptr->style & (WS_MINIMIZE|WS_DISABLED)) &&
514 x >= ptr->client_rect.left && x < ptr->client_rect.right &&
515 y >= ptr->client_rect.top && y < ptr->client_rect.bottom)
517 if (!get_window_children_from_point( ptr, x - ptr->client_rect.left,
518 y - ptr->client_rect.top, array ))
522 /* now add window to the array */
523 if (!add_handle_to_array( array, ptr->handle )) return 0;
528 /* find window containing point (in absolute coords) */
529 user_handle_t window_from_point( int x, int y )
533 if (!top_window) return 0;
534 ret = child_window_from_point( top_window, x, y );
538 /* return list of all windows containing point (in absolute coords) */
539 static int all_windows_from_point( struct window *top, int x, int y, struct user_handle_array *array )
543 /* make point relative to top window */
544 for (ptr = top->parent; ptr && ptr != top_window; ptr = ptr->parent)
546 x -= ptr->client_rect.left;
547 y -= ptr->client_rect.top;
550 if (!is_point_in_window( top, x, y )) return 1;
552 /* if point is in client area, and window is not minimized or disabled, check children */
553 if (!(top->style & (WS_MINIMIZE|WS_DISABLED)) &&
554 x >= top->client_rect.left && x < top->client_rect.right &&
555 y >= top->client_rect.top && y < top->client_rect.bottom)
557 if (!get_window_children_from_point( top, x - top->client_rect.left,
558 y - top->client_rect.top, array ))
561 /* now add window to the array */
562 if (!add_handle_to_array( array, top->handle )) return 0;
567 /* return the thread owning a window */
568 struct thread *get_window_thread( user_handle_t handle )
570 struct window *win = get_user_object( handle, USER_WINDOW );
571 if (!win || !win->thread) return NULL;
572 return (struct thread *)grab_object( win->thread );
576 /* check if any area of a window needs repainting */
577 static inline int win_needs_repaint( struct window *win )
579 return win->update_region || (win->paint_flags & PAINT_INTERNAL);
583 /* find a child of the specified window that needs repainting */
584 static struct window *find_child_to_repaint( struct window *parent, struct thread *thread )
586 struct window *ptr, *ret = NULL;
588 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
590 if (!(ptr->style & WS_VISIBLE)) continue;
591 if (ptr->thread == thread && win_needs_repaint( ptr ))
593 else if (!(ptr->style & WS_MINIMIZE)) /* explore its children */
594 ret = find_child_to_repaint( ptr, thread );
598 if (ret && (ret->ex_style & WS_EX_TRANSPARENT))
600 /* transparent window, check for non-transparent sibling to paint first */
601 for (ptr = get_next_window(ret); ptr; ptr = get_next_window(ptr))
603 if (!(ptr->style & WS_VISIBLE)) continue;
604 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
605 if (ptr->thread != thread) continue;
606 if (win_needs_repaint( ptr )) return ptr;
613 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
614 user_handle_t find_window_to_repaint( user_handle_t parent, struct thread *thread )
616 struct window *ptr, *win = find_child_to_repaint( top_window, thread );
620 /* check that it is a child of the specified parent */
621 for (ptr = win; ptr; ptr = ptr->parent)
622 if (ptr->handle == parent) break;
623 /* otherwise don't return any window, we don't repaint a child before its parent */
624 if (!ptr) win = NULL;
627 win->paint_flags &= ~PAINT_INTERNAL;
632 /* intersect the window region with the specified region, relative to the window parent */
633 static struct region *intersect_window_region( struct region *region, struct window *win )
635 /* make region relative to window rect */
636 offset_region( region, -win->window_rect.left, -win->window_rect.top );
637 if (!intersect_region( region, region, win->win_region )) return NULL;
638 /* make region relative to parent again */
639 offset_region( region, win->window_rect.left, win->window_rect.top );
644 /* convert coordinates from client to screen coords */
645 static inline void client_to_screen( struct window *win, int *x, int *y )
647 for ( ; win; win = win->parent)
649 *x += win->client_rect.left;
650 *y += win->client_rect.top;
654 /* map the region from window to screen coordinates */
655 static inline void map_win_region_to_screen( struct window *win, struct region *region )
657 int x = win->window_rect.left;
658 int y = win->window_rect.top;
659 client_to_screen( win->parent, &x, &y );
660 offset_region( region, x, y );
664 /* clip all children of a given window out of the visible region */
665 static struct region *clip_children( struct window *parent, struct window *last,
666 struct region *region, int offset_x, int offset_y )
669 struct region *tmp = create_empty_region();
671 if (!tmp) return NULL;
672 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
674 if (ptr == last) break;
675 if (!(ptr->style & WS_VISIBLE)) continue;
676 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
677 set_region_rect( tmp, &ptr->visible_rect );
678 if (ptr->win_region && !intersect_window_region( tmp, ptr ))
683 offset_region( tmp, offset_x, offset_y );
684 if (!(region = subtract_region( region, region, tmp ))) break;
685 if (is_region_empty( region )) break;
692 /* compute the intersection of two rectangles; return 0 if the result is empty */
693 static inline int intersect_rect( rectangle_t *dst, const rectangle_t *src1, const rectangle_t *src2 )
695 dst->left = max( src1->left, src2->left );
696 dst->top = max( src1->top, src2->top );
697 dst->right = min( src1->right, src2->right );
698 dst->bottom = min( src1->bottom, src2->bottom );
699 return (dst->left < dst->right && dst->top < dst->bottom);
703 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
704 static void set_region_client_rect( struct region *region, struct window *win )
708 intersect_rect( &rect, &win->window_rect, &win->client_rect );
709 set_region_rect( region, &rect );
713 /* get the top-level window to clip against for a given window */
714 static inline struct window *get_top_clipping_window( struct window *win )
716 while (win->parent && win->parent != top_window) win = win->parent;
721 /* compute the visible region of a window, in window coordinates */
722 static struct region *get_visible_region( struct window *win, struct window *top, unsigned int flags )
724 struct region *tmp = NULL, *region;
725 int offset_x, offset_y;
727 if (!(region = create_empty_region())) return NULL;
729 /* first check if all ancestors are visible */
731 if (!is_visible( win )) return region; /* empty region */
733 /* create a region relative to the window itself */
735 if ((flags & DCX_PARENTCLIP) && win != top && win->parent)
737 set_region_client_rect( region, win->parent );
738 offset_region( region, -win->parent->client_rect.left, -win->parent->client_rect.top );
740 else if (flags & DCX_WINDOW)
742 set_region_rect( region, &win->visible_rect );
743 if (win->win_region && !intersect_window_region( region, win )) goto error;
747 set_region_client_rect( region, win );
748 if (win->win_region && !intersect_window_region( region, win )) goto error;
750 offset_x = win->window_rect.left;
751 offset_y = win->window_rect.top;
755 if (flags & DCX_CLIPCHILDREN)
757 if (!clip_children( win, NULL, region, win->client_rect.left, win->client_rect.top ))
761 /* clip siblings of ancestors */
763 if (top && top != win && (tmp = create_empty_region()) != NULL)
765 while (win != top && win->parent)
767 if (win->style & WS_CLIPSIBLINGS)
769 if (!clip_children( win->parent, win, region, 0, 0 )) goto error;
770 if (is_region_empty( region )) break;
772 /* clip to parent client area */
774 offset_x += win->client_rect.left;
775 offset_y += win->client_rect.top;
776 offset_region( region, win->client_rect.left, win->client_rect.top );
777 set_region_client_rect( tmp, win );
778 if (win->win_region && !intersect_window_region( tmp, win )) goto error;
779 if (!intersect_region( region, region, tmp )) goto error;
780 if (is_region_empty( region )) break;
784 offset_region( region, -offset_x, -offset_y ); /* make it relative to target window */
788 if (tmp) free_region( tmp );
789 free_region( region );
794 /* get the window class of a window */
795 struct window_class* get_window_class( user_handle_t window )
798 if (!(win = get_window( window ))) return NULL;
802 /* return a copy of the specified region cropped to the window client or frame rectangle, */
803 /* and converted from client to window coordinates. Helper for (in)validate_window. */
804 static struct region *crop_region_to_win_rect( struct window *win, struct region *region, int frame )
806 struct region *tmp = create_empty_region();
808 if (!tmp) return NULL;
810 /* get bounding rect in client coords */
811 if (frame) set_region_rect( tmp, &win->window_rect );
812 else set_region_client_rect( tmp, win );
813 offset_region( tmp, -win->client_rect.left, -win->client_rect.top );
815 /* intersect specified region with bounding rect */
816 if (region && !intersect_region( tmp, region, tmp )) goto done;
817 if (is_region_empty( tmp )) goto done;
819 /* map it to window coords */
820 offset_region( tmp, win->client_rect.left - win->window_rect.left,
821 win->client_rect.top - win->window_rect.top );
830 /* set a region as new update region for the window */
831 static void set_update_region( struct window *win, struct region *region )
833 if (region && !is_region_empty( region ))
835 if (!win->update_region) inc_window_paint_count( win, 1 );
836 else free_region( win->update_region );
837 win->update_region = region;
841 if (win->update_region) inc_window_paint_count( win, -1 );
842 win->paint_flags &= ~(PAINT_ERASE | PAINT_NONCLIENT);
843 win->update_region = NULL;
844 if (region) free_region( region );
849 /* add a region to the update region; the passed region is freed or reused */
850 static int add_update_region( struct window *win, struct region *region )
852 if (win->update_region && !union_region( region, win->update_region, region ))
854 free_region( region );
857 set_update_region( win, region );
862 /* validate the non client area of a window */
863 static void validate_non_client( struct window *win )
868 if (!win->update_region) return; /* nothing to do */
870 /* get client rect in window coords */
871 rect.left = win->client_rect.left - win->window_rect.left;
872 rect.top = win->client_rect.top - win->window_rect.top;
873 rect.right = win->client_rect.right - win->window_rect.left;
874 rect.bottom = win->client_rect.bottom - win->window_rect.top;
876 if ((tmp = create_empty_region()))
878 set_region_rect( tmp, &rect );
879 if (intersect_region( tmp, win->update_region, tmp ))
880 set_update_region( win, tmp );
884 win->paint_flags &= ~PAINT_NONCLIENT;
888 /* validate a window completely so that we don't get any further paint messages for it */
889 static void validate_whole_window( struct window *win )
891 set_update_region( win, NULL );
893 if (win->paint_flags & PAINT_INTERNAL)
895 win->paint_flags &= ~PAINT_INTERNAL;
896 inc_window_paint_count( win, -1 );
901 /* validate the update region of a window on all parents; helper for redraw_window */
902 static void validate_parents( struct window *child )
904 int offset_x = 0, offset_y = 0;
905 struct window *win = child;
906 struct region *tmp = NULL;
908 if (!child->update_region) return;
910 while (win->parent && win->parent != top_window)
912 /* map to parent client coords */
913 offset_x += win->window_rect.left;
914 offset_y += win->window_rect.top;
918 /* and now map to window coords */
919 offset_x += win->client_rect.left - win->window_rect.left;
920 offset_y += win->client_rect.top - win->window_rect.top;
922 if (win->update_region && !(win->style & WS_CLIPCHILDREN))
924 if (!tmp && !(tmp = create_empty_region())) return;
925 offset_region( child->update_region, offset_x, offset_y );
926 if (subtract_region( tmp, win->update_region, child->update_region ))
928 set_update_region( win, tmp );
931 /* restore child coords */
932 offset_region( child->update_region, -offset_x, -offset_y );
935 if (tmp) free_region( tmp );
939 /* add/subtract a region (in client coordinates) to the update region of the window */
940 static void redraw_window( struct window *win, struct region *region, int frame, unsigned int flags )
943 struct window *child;
945 if (flags & RDW_INVALIDATE)
947 if (!(tmp = crop_region_to_win_rect( win, region, frame ))) return;
949 if (!add_update_region( win, tmp )) return;
951 if (flags & RDW_FRAME) win->paint_flags |= PAINT_NONCLIENT;
952 if (flags & RDW_ERASE) win->paint_flags |= PAINT_ERASE;
954 else if (flags & RDW_VALIDATE)
956 if (!region && (flags & RDW_NOFRAME)) /* shortcut: validate everything */
958 set_update_region( win, NULL );
960 else if (win->update_region)
962 if ((tmp = crop_region_to_win_rect( win, region, frame )))
964 if (!subtract_region( tmp, win->update_region, tmp ))
969 set_update_region( win, tmp );
971 if (flags & RDW_NOFRAME) validate_non_client( win );
972 if (flags & RDW_NOERASE) win->paint_flags &= ~PAINT_ERASE;
976 if ((flags & RDW_INTERNALPAINT) && !(win->paint_flags & PAINT_INTERNAL))
978 win->paint_flags |= PAINT_INTERNAL;
979 inc_window_paint_count( win, 1 );
981 else if ((flags & RDW_NOINTERNALPAINT) && (win->paint_flags & PAINT_INTERNAL))
983 win->paint_flags &= ~PAINT_INTERNAL;
984 inc_window_paint_count( win, -1 );
987 if (flags & RDW_UPDATENOW)
989 validate_parents( win );
990 flags &= ~RDW_UPDATENOW;
993 /* now process children recursively */
995 if (flags & RDW_NOCHILDREN) return;
996 if (win->style & WS_MINIMIZE) return;
997 if ((win->style & WS_CLIPCHILDREN) && !(flags & RDW_ALLCHILDREN)) return;
999 if (!(tmp = crop_region_to_win_rect( win, region, 0 ))) return;
1001 /* map to client coordinates */
1002 offset_region( tmp, win->window_rect.left - win->client_rect.left,
1003 win->window_rect.top - win->client_rect.top );
1005 if (flags & RDW_INVALIDATE) flags |= RDW_FRAME | RDW_ERASE;
1007 LIST_FOR_EACH_ENTRY( child, &win->children, struct window, entry )
1009 if (!(child->style & WS_VISIBLE)) continue;
1010 if (!rect_in_region( tmp, &child->window_rect )) continue;
1011 offset_region( tmp, -child->client_rect.left, -child->client_rect.top );
1012 redraw_window( child, tmp, 1, flags );
1013 offset_region( tmp, child->client_rect.left, child->client_rect.top );
1019 /* retrieve the update flags for a window depending on the state of the update region */
1020 static unsigned int get_update_flags( struct window *win, unsigned int flags )
1022 unsigned int ret = 0;
1024 if (flags & UPDATE_NONCLIENT)
1026 if ((win->paint_flags & PAINT_NONCLIENT) && win->update_region) ret |= UPDATE_NONCLIENT;
1028 if (flags & UPDATE_ERASE)
1030 if ((win->paint_flags & PAINT_ERASE) && win->update_region) ret |= UPDATE_ERASE;
1032 if (flags & UPDATE_PAINT)
1034 if (win->update_region) ret |= UPDATE_PAINT;
1036 if (flags & UPDATE_INTERNALPAINT)
1038 if (win->paint_flags & PAINT_INTERNAL) ret |= UPDATE_INTERNALPAINT;
1044 /* iterate through the children of the given window until we find one with some update flags */
1045 static unsigned int get_child_update_flags( struct window *win, unsigned int flags,
1046 struct window **child )
1049 unsigned int ret = 0;
1051 LIST_FOR_EACH_ENTRY( ptr, &win->children, struct window, entry )
1053 if (!(ptr->style & WS_VISIBLE)) continue;
1054 if ((ret = get_update_flags( ptr, flags )) != 0)
1059 if (ptr->style & WS_MINIMIZE) continue;
1061 /* Note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1062 * here we only want to repaint children of windows that clip them, others
1063 * need to wait for WM_PAINT to be done in the parent first.
1065 if (!(flags & UPDATE_NOCHILDREN) &&
1066 ((flags & UPDATE_ALLCHILDREN) || (ptr->style & WS_CLIPCHILDREN)))
1068 if ((ret = get_child_update_flags( ptr, flags, child ))) break;
1075 /* expose a region of a window, looking for the top most parent that needs to be exposed */
1076 /* the region is in window coordinates */
1077 static void expose_window( struct window *win, struct window *top, struct region *region )
1079 struct window *parent, *ptr;
1080 int offset_x, offset_y;
1082 /* find the top most parent that doesn't clip either siblings or children */
1083 for (parent = ptr = win; ptr != top; ptr = ptr->parent)
1085 if (!(ptr->style & WS_CLIPCHILDREN)) parent = ptr;
1086 if (!(ptr->style & WS_CLIPSIBLINGS)) parent = ptr->parent;
1088 if (parent == win && parent != top && win->parent)
1089 parent = win->parent; /* always go up at least one level if possible */
1091 offset_x = win->window_rect.left - win->client_rect.left;
1092 offset_y = win->window_rect.top - win->client_rect.top;
1093 for (ptr = win; ptr != parent; ptr = ptr->parent)
1095 offset_x += ptr->client_rect.left;
1096 offset_y += ptr->client_rect.top;
1098 offset_region( region, offset_x, offset_y );
1099 redraw_window( parent, region, 0, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN );
1100 offset_region( region, -offset_x, -offset_y );
1104 /* set the window and client rectangles, updating the update region if necessary */
1105 static void set_window_pos( struct window *win, struct window *previous,
1106 unsigned int swp_flags, const rectangle_t *window_rect,
1107 const rectangle_t *client_rect, const rectangle_t *visible_rect,
1108 const rectangle_t *valid_rects )
1110 struct region *old_vis_rgn = NULL, *new_vis_rgn;
1111 const rectangle_t old_window_rect = win->window_rect;
1112 const rectangle_t old_visible_rect = win->visible_rect;
1113 const rectangle_t old_client_rect = win->client_rect;
1114 struct window *top = get_top_clipping_window( win );
1115 int visible = (win->style & WS_VISIBLE) || (swp_flags & SWP_SHOWWINDOW);
1117 if (win->parent && !is_visible( win->parent )) visible = 0;
1119 if (visible && !(old_vis_rgn = get_visible_region( win, top, DCX_WINDOW ))) return;
1121 /* set the new window info before invalidating anything */
1123 win->window_rect = *window_rect;
1124 win->visible_rect = *visible_rect;
1125 win->client_rect = *client_rect;
1126 if (!(swp_flags & SWP_NOZORDER) && win->parent)
1128 list_remove( &win->entry ); /* unlink it from the previous location */
1129 if (previous) list_add_after( &previous->entry, &win->entry );
1130 else list_add_head( &win->parent->children, &win->entry );
1132 if (swp_flags & SWP_SHOWWINDOW) win->style |= WS_VISIBLE;
1133 else if (swp_flags & SWP_HIDEWINDOW) win->style &= ~WS_VISIBLE;
1135 /* if the window is not visible, everything is easy */
1136 if (!visible) return;
1138 if (!(new_vis_rgn = get_visible_region( win, top, DCX_WINDOW )))
1140 free_region( old_vis_rgn );
1141 clear_error(); /* ignore error since the window info has been modified already */
1145 /* expose anything revealed by the change */
1147 if (!(swp_flags & SWP_NOREDRAW))
1149 offset_region( old_vis_rgn, old_window_rect.left - window_rect->left,
1150 old_window_rect.top - window_rect->top );
1151 if (xor_region( new_vis_rgn, old_vis_rgn, new_vis_rgn ))
1152 expose_window( win, top, new_vis_rgn );
1154 free_region( old_vis_rgn );
1156 if (!(win->style & WS_VISIBLE))
1158 /* clear the update region since the window is no longer visible */
1159 validate_whole_window( win );
1163 if (swp_flags & SWP_NOREDRAW) goto done; /* do not repaint anything */
1165 /* expose the whole non-client area if it changed in any way */
1167 if ((swp_flags & SWP_FRAMECHANGED) ||
1168 memcmp( window_rect, &old_window_rect, sizeof(old_window_rect) ) ||
1169 memcmp( visible_rect, &old_visible_rect, sizeof(old_visible_rect) ) ||
1170 memcmp( client_rect, &old_client_rect, sizeof(old_client_rect) ))
1172 struct region *tmp = create_empty_region();
1176 /* subtract the valid portion of client rect from the total region */
1177 if (!memcmp( client_rect, &old_client_rect, sizeof(old_client_rect) ))
1178 set_region_rect( tmp, client_rect );
1179 else if (valid_rects)
1180 set_region_rect( tmp, &valid_rects[0] );
1182 set_region_rect( new_vis_rgn, window_rect );
1183 if (subtract_region( tmp, new_vis_rgn, tmp ))
1185 offset_region( tmp, -client_rect->left, -client_rect->top );
1186 redraw_window( win, tmp, 1, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
1193 free_region( new_vis_rgn );
1194 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1198 /* create a window */
1199 DECL_HANDLER(create_window)
1204 if (!req->parent) /* return desktop window */
1208 if (!(top_window = create_window( NULL, NULL, req->atom, req->instance ))) return;
1209 top_window->thread = NULL; /* no thread owns the desktop */
1210 top_window->style = WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
1216 struct window *parent, *owner = NULL;
1218 if (!(parent = get_window( req->parent ))) return;
1219 if (req->owner && !(owner = get_window( req->owner ))) return;
1220 if (owner == top_window) owner = NULL;
1221 else if (owner && parent != top_window)
1223 /* an owned window must be created as top-level */
1224 set_error( STATUS_ACCESS_DENIED );
1227 if (!(win = create_window( parent, owner, req->atom, req->instance ))) return;
1229 reply->handle = win->handle;
1230 reply->extra = win->nb_extra_bytes;
1231 reply->class_ptr = get_class_client_ptr( win->class );
1235 /* set the parent of a window */
1236 DECL_HANDLER(set_parent)
1238 struct window *win, *parent = NULL;
1240 if (!(win = get_window( req->handle ))) return;
1241 if (req->parent && !(parent = get_window( req->parent ))) return;
1243 if (win == top_window)
1245 set_error( STATUS_INVALID_PARAMETER );
1248 reply->old_parent = win->parent->handle;
1249 reply->full_parent = parent ? parent->handle : 0;
1250 set_parent_window( win, parent );
1254 /* destroy a window */
1255 DECL_HANDLER(destroy_window)
1257 struct window *win = get_window( req->handle );
1260 if (win != top_window) destroy_window( win );
1261 else set_error( STATUS_ACCESS_DENIED );
1266 /* set a window owner */
1267 DECL_HANDLER(set_window_owner)
1269 struct window *win = get_window( req->handle );
1270 struct window *owner = NULL;
1273 if (req->owner && !(owner = get_window( req->owner ))) return;
1274 if (win == top_window)
1276 set_error( STATUS_ACCESS_DENIED );
1279 reply->prev_owner = win->owner;
1280 reply->full_owner = win->owner = owner ? owner->handle : 0;
1284 /* get information from a window handle */
1285 DECL_HANDLER(get_window_info)
1287 struct window *win = get_window( req->handle );
1289 reply->full_handle = 0;
1290 reply->tid = reply->pid = 0;
1293 reply->full_handle = win->handle;
1294 reply->last_active = win->handle;
1295 if (get_user_object( win->last_active, USER_WINDOW )) reply->last_active = win->last_active;
1298 reply->tid = get_thread_id( win->thread );
1299 reply->pid = get_process_id( win->thread->process );
1300 reply->atom = get_class_atom( win->class );
1306 /* set some information in a window */
1307 DECL_HANDLER(set_window_info)
1309 struct window *win = get_window( req->handle );
1312 if (req->flags && win == top_window)
1314 set_error( STATUS_ACCESS_DENIED );
1317 if (req->extra_size > sizeof(req->extra_value) ||
1318 req->extra_offset < -1 ||
1319 req->extra_offset > win->nb_extra_bytes - (int)req->extra_size)
1321 set_win32_error( ERROR_INVALID_INDEX );
1324 if (req->extra_offset != -1)
1326 memcpy( &reply->old_extra_value, win->extra_bytes + req->extra_offset, req->extra_size );
1328 else if (req->flags & SET_WIN_EXTRA)
1330 set_win32_error( ERROR_INVALID_INDEX );
1333 reply->old_style = win->style;
1334 reply->old_ex_style = win->ex_style;
1335 reply->old_id = win->id;
1336 reply->old_instance = win->instance;
1337 reply->old_user_data = win->user_data;
1338 if (req->flags & SET_WIN_STYLE) win->style = req->style;
1339 if (req->flags & SET_WIN_EXSTYLE) win->ex_style = req->ex_style;
1340 if (req->flags & SET_WIN_ID) win->id = req->id;
1341 if (req->flags & SET_WIN_INSTANCE) win->instance = req->instance;
1342 if (req->flags & SET_WIN_USERDATA) win->user_data = req->user_data;
1343 if (req->flags & SET_WIN_EXTRA) memcpy( win->extra_bytes + req->extra_offset,
1344 &req->extra_value, req->extra_size );
1346 /* changing window style triggers a non-client paint */
1347 if (req->flags & SET_WIN_STYLE) win->paint_flags |= PAINT_NONCLIENT;
1351 /* get a list of the window parents, up to the root of the tree */
1352 DECL_HANDLER(get_window_parents)
1354 struct window *ptr, *win = get_window( req->handle );
1356 user_handle_t *data;
1359 if (win) for (ptr = win->parent; ptr; ptr = ptr->parent) total++;
1361 reply->count = total;
1362 len = min( get_reply_max_size(), total * sizeof(user_handle_t) );
1363 if (len && ((data = set_reply_data_size( len ))))
1365 for (ptr = win->parent; ptr && len; ptr = ptr->parent, len -= sizeof(*data))
1366 *data++ = ptr->handle;
1371 /* get a list of the window children */
1372 DECL_HANDLER(get_window_children)
1374 struct window *ptr, *parent = get_window( req->parent );
1376 user_handle_t *data;
1381 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
1383 if (req->atom && get_class_atom(ptr->class) != req->atom) continue;
1384 if (req->tid && get_thread_id(ptr->thread) != req->tid) continue;
1388 reply->count = total;
1389 len = min( get_reply_max_size(), total * sizeof(user_handle_t) );
1390 if (len && ((data = set_reply_data_size( len ))))
1392 LIST_FOR_EACH_ENTRY( ptr, &parent->children, struct window, entry )
1394 if (len < sizeof(*data)) break;
1395 if (req->atom && get_class_atom(ptr->class) != req->atom) continue;
1396 if (req->tid && get_thread_id(ptr->thread) != req->tid) continue;
1397 *data++ = ptr->handle;
1398 len -= sizeof(*data);
1404 /* get a list of the window children that contain a given point */
1405 DECL_HANDLER(get_window_children_from_point)
1407 struct user_handle_array array;
1408 struct window *parent = get_window( req->parent );
1411 if (!parent) return;
1413 array.handles = NULL;
1416 if (!all_windows_from_point( parent, req->x, req->y, &array )) return;
1418 reply->count = array.count;
1419 len = min( get_reply_max_size(), array.count * sizeof(user_handle_t) );
1420 if (len) set_reply_data_ptr( array.handles, len );
1421 else free( array.handles );
1425 /* get window tree information from a window handle */
1426 DECL_HANDLER(get_window_tree)
1428 struct window *ptr, *win = get_window( req->handle );
1434 reply->next_sibling = 0;
1435 reply->prev_sibling = 0;
1436 reply->first_sibling = 0;
1437 reply->last_sibling = 0;
1438 reply->first_child = 0;
1439 reply->last_child = 0;
1443 struct window *parent = win->parent;
1444 reply->parent = parent->handle;
1445 reply->owner = win->owner;
1446 if ((ptr = get_next_window( win ))) reply->next_sibling = ptr->handle;
1447 if ((ptr = get_prev_window( win ))) reply->prev_sibling = ptr->handle;
1448 if ((ptr = get_first_child( parent ))) reply->first_sibling = ptr->handle;
1449 if ((ptr = get_last_child( parent ))) reply->last_sibling = ptr->handle;
1451 if ((ptr = get_first_child( win ))) reply->first_child = ptr->handle;
1452 if ((ptr = get_last_child( win ))) reply->last_child = ptr->handle;
1456 /* set the position and Z order of a window */
1457 DECL_HANDLER(set_window_pos)
1459 const rectangle_t *visible_rect = NULL, *valid_rects = NULL;
1460 struct window *previous = NULL;
1461 struct window *win = get_window( req->handle );
1462 unsigned int flags = req->flags;
1465 if (!win->parent) flags |= SWP_NOZORDER; /* no Z order for the desktop */
1467 if (!(flags & SWP_NOZORDER))
1469 if (!req->previous) /* special case: HWND_TOP */
1471 if (get_first_child(win->parent) == win) flags |= SWP_NOZORDER;
1473 else if (req->previous == (user_handle_t)1) /* special case: HWND_BOTTOM */
1475 previous = get_last_child( win->parent );
1479 if (!(previous = get_window( req->previous ))) return;
1480 /* previous must be a sibling */
1481 if (previous->parent != win->parent)
1483 set_error( STATUS_INVALID_PARAMETER );
1487 if (previous == win) flags |= SWP_NOZORDER; /* nothing to do */
1490 /* window rectangle must be ordered properly */
1491 if (req->window.right < req->window.left || req->window.bottom < req->window.top)
1493 set_error( STATUS_INVALID_PARAMETER );
1497 if (get_req_data_size() >= sizeof(rectangle_t)) visible_rect = get_req_data();
1498 if (get_req_data_size() >= 3 * sizeof(rectangle_t)) valid_rects = visible_rect + 1;
1500 if (!visible_rect) visible_rect = &req->window;
1501 set_window_pos( win, previous, flags, &req->window, &req->client, visible_rect, valid_rects );
1502 reply->new_style = win->style;
1506 /* get the window and client rectangles of a window */
1507 DECL_HANDLER(get_window_rectangles)
1509 struct window *win = get_window( req->handle );
1513 reply->window = win->window_rect;
1514 reply->visible = win->visible_rect;
1515 reply->client = win->client_rect;
1520 /* get the window text */
1521 DECL_HANDLER(get_window_text)
1523 struct window *win = get_window( req->handle );
1525 if (win && win->text)
1527 size_t len = strlenW( win->text ) * sizeof(WCHAR);
1528 if (len > get_reply_max_size()) len = get_reply_max_size();
1529 set_reply_data( win->text, len );
1534 /* set the window text */
1535 DECL_HANDLER(set_window_text)
1537 struct window *win = get_window( req->handle );
1542 size_t len = get_req_data_size() / sizeof(WCHAR);
1545 if (!(text = mem_alloc( (len+1) * sizeof(WCHAR) ))) return;
1546 memcpy( text, get_req_data(), len * sizeof(WCHAR) );
1549 if (win->text) free( win->text );
1555 /* get the coordinates offset between two windows */
1556 DECL_HANDLER(get_windows_offset)
1560 reply->x = reply->y = 0;
1563 if (!(win = get_window( req->from ))) return;
1566 reply->x += win->client_rect.left;
1567 reply->y += win->client_rect.top;
1573 if (!(win = get_window( req->to ))) return;
1576 reply->x -= win->client_rect.left;
1577 reply->y -= win->client_rect.top;
1584 /* get the visible region of a window */
1585 DECL_HANDLER(get_visible_region)
1587 struct region *region;
1588 struct window *top, *win = get_window( req->window );
1592 top = get_top_clipping_window( win );
1593 if ((region = get_visible_region( win, top, req->flags )))
1596 map_win_region_to_screen( win, region );
1597 data = get_region_data_and_free( region, get_reply_max_size(), &reply->total_size );
1598 if (data) set_reply_data_ptr( data, reply->total_size );
1600 reply->top_win = top->handle;
1601 reply->top_org_x = top->visible_rect.left;
1602 reply->top_org_y = top->visible_rect.top;
1603 reply->win_org_x = (req->flags & DCX_WINDOW) ? win->window_rect.left : win->client_rect.left;
1604 reply->win_org_y = (req->flags & DCX_WINDOW) ? win->window_rect.top : win->client_rect.top;
1605 client_to_screen( top->parent, &reply->top_org_x, &reply->top_org_y );
1606 client_to_screen( win->parent, &reply->win_org_x, &reply->win_org_y );
1610 /* get the window region */
1611 DECL_HANDLER(get_window_region)
1613 struct window *win = get_window( req->window );
1617 if (win->win_region)
1619 rectangle_t *data = get_region_data( win->win_region, get_reply_max_size(), &reply->total_size );
1620 if (data) set_reply_data_ptr( data, reply->total_size );
1625 /* set the window region */
1626 DECL_HANDLER(set_window_region)
1628 struct region *region = NULL;
1629 struct window *win = get_window( req->window );
1633 if (get_req_data_size()) /* no data means remove the region completely */
1635 if (!(region = create_region_from_req_data( get_req_data(), get_req_data_size() )))
1638 if (win->win_region) free_region( win->win_region );
1639 win->win_region = region;
1643 /* get a window update region */
1644 DECL_HANDLER(get_update_region)
1647 unsigned int flags = req->flags;
1648 struct window *win = get_window( req->window );
1651 if (!win || !is_visible( win )) return;
1653 if ((flags & UPDATE_NONCLIENT) && !(flags & (UPDATE_PAINT|UPDATE_INTERNALPAINT)))
1655 /* non-client painting must be delayed if one of the parents is going to
1656 * be repainted and doesn't clip children */
1659 for (ptr = win->parent; ptr && ptr != top_window; ptr = ptr->parent)
1661 if (!(ptr->style & WS_CLIPCHILDREN) && win_needs_repaint( ptr ))
1666 if (!(reply->flags = get_update_flags( win, flags )))
1668 /* if window doesn't need any repaint, check the children */
1669 if (!(flags & UPDATE_NOCHILDREN) &&
1670 ((flags & UPDATE_ALLCHILDREN) || (win->style & WS_CLIPCHILDREN)) &&
1671 !(win->style & WS_MINIMIZE))
1673 reply->flags = get_child_update_flags( win, flags, &win );
1677 reply->child = win->handle;
1679 if (flags & UPDATE_NOREGION) return;
1681 if (win->update_region)
1683 /* convert update region to screen coordinates */
1684 struct region *region = create_empty_region();
1686 if (!region) return;
1687 if (!copy_region( region, win->update_region ))
1689 free_region( region );
1692 map_win_region_to_screen( win, region );
1693 if (!(data = get_region_data_and_free( region, get_reply_max_size(),
1694 &reply->total_size ))) return;
1695 set_reply_data_ptr( data, reply->total_size );
1698 if (reply->flags & (UPDATE_PAINT|UPDATE_INTERNALPAINT)) /* validate everything */
1700 validate_whole_window( win );
1704 if (reply->flags & UPDATE_NONCLIENT) validate_non_client( win );
1705 if (reply->flags & UPDATE_ERASE)
1707 win->paint_flags &= ~PAINT_ERASE;
1708 /* desktop window only gets erased, not repainted */
1709 if (win == top_window) validate_whole_window( win );
1715 /* update the z order of a window so that a given rectangle is fully visible */
1716 DECL_HANDLER(update_window_zorder)
1719 struct window *ptr, *win = get_window( req->window );
1721 if (!win || !win->parent || !is_visible( win )) return; /* nothing to do */
1723 LIST_FOR_EACH_ENTRY( ptr, &win->parent->children, struct window, entry )
1725 if (ptr == win) break;
1726 if (!(ptr->style & WS_VISIBLE)) continue;
1727 if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
1728 if (!intersect_rect( &tmp, &ptr->visible_rect, &req->rect )) continue;
1729 if (ptr->win_region && !rect_in_region( ptr->win_region, &req->rect )) continue;
1730 /* found a window obscuring the rectangle, now move win above this one */
1731 list_remove( &win->entry );
1732 list_add_before( &ptr->entry, &win->entry );
1738 /* mark parts of a window as needing a redraw */
1739 DECL_HANDLER(redraw_window)
1741 struct region *region = NULL;
1742 struct window *win = get_window( req->window );
1745 if (!is_visible( win )) return; /* nothing to do */
1747 if (req->flags & (RDW_VALIDATE|RDW_INVALIDATE))
1749 if (get_req_data_size()) /* no data means whole rectangle */
1751 if (!(region = create_region_from_req_data( get_req_data(), get_req_data_size() )))
1756 redraw_window( win, region, (req->flags & RDW_INVALIDATE) && (req->flags & RDW_FRAME),
1758 if (region) free_region( region );
1762 /* set a window property */
1763 DECL_HANDLER(set_window_property)
1765 struct window *win = get_window( req->window );
1767 if (win) set_property( win, req->atom, req->handle,
1768 req->string ? PROP_TYPE_STRING : PROP_TYPE_ATOM );
1772 /* remove a window property */
1773 DECL_HANDLER(remove_window_property)
1775 struct window *win = get_window( req->window );
1777 if (win) reply->handle = remove_property( win, req->atom );
1781 /* get a window property */
1782 DECL_HANDLER(get_window_property)
1784 struct window *win = get_window( req->window );
1786 if (win) reply->handle = get_property( win, req->atom );
1790 /* get the list of properties of a window */
1791 DECL_HANDLER(get_window_properties)
1793 property_data_t *data;
1794 int i, count, max = get_reply_max_size() / sizeof(*data);
1795 struct window *win = get_window( req->window );
1800 for (i = count = 0; i < win->prop_inuse; i++)
1801 if (win->properties[i].type != PROP_TYPE_FREE) count++;
1802 reply->total = count;
1804 if (count > max) count = max;
1805 if (!count || !(data = set_reply_data_size( count * sizeof(*data) ))) return;
1807 for (i = 0; i < win->prop_inuse && count; i++)
1809 if (win->properties[i].type == PROP_TYPE_FREE) continue;
1810 data->atom = win->properties[i].atom;
1811 data->string = (win->properties[i].type == PROP_TYPE_STRING);
1812 data->handle = win->properties[i].handle;
1819 /* get the new window pointer for a global window, checking permissions */
1820 /* helper for set_global_windows request */
1821 static int get_new_global_window( struct window **win, user_handle_t handle )
1830 set_error( STATUS_ACCESS_DENIED );
1833 *win = get_window( handle );
1834 return (*win != NULL);
1837 /* Set/get the global windows */
1838 DECL_HANDLER(set_global_windows)
1840 struct window *new_shell_window = shell_window;
1841 struct window *new_shell_listview = shell_listview;
1842 struct window *new_progman_window = progman_window;
1843 struct window *new_taskman_window = taskman_window;
1845 reply->old_shell_window = shell_window ? shell_window->handle : 0;
1846 reply->old_shell_listview = shell_listview ? shell_listview->handle : 0;
1847 reply->old_progman_window = progman_window ? progman_window->handle : 0;
1848 reply->old_taskman_window = taskman_window ? taskman_window->handle : 0;
1850 if (req->flags & SET_GLOBAL_SHELL_WINDOWS)
1852 if (!get_new_global_window( &new_shell_window, req->shell_window )) return;
1853 if (!get_new_global_window( &new_shell_listview, req->shell_listview )) return;
1855 if (req->flags & SET_GLOBAL_PROGMAN_WINDOW)
1857 if (!get_new_global_window( &new_progman_window, req->progman_window )) return;
1859 if (req->flags & SET_GLOBAL_TASKMAN_WINDOW)
1861 if (!get_new_global_window( &new_taskman_window, req->taskman_window )) return;
1863 shell_window = new_shell_window;
1864 shell_listview = new_shell_listview;
1865 progman_window = new_progman_window;
1866 taskman_window = new_taskman_window;