2 * Window painting functions
4 * Copyright 1993, 1994, 1995, 2001, 2004, 2005, 2008 Alexandre Julliard
5 * Copyright 1996, 1997, 1999 Alex Korobka
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 #include "wine/port.h"
30 #define WIN32_NO_STATUS
35 #include "wine/server.h"
37 #include "user_private.h"
39 #include "wine/gdi_driver.h"
40 #include "wine/list.h"
41 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(win
);
48 struct list entry
; /* entry in global DCE list */
53 LONG count
; /* usage count; 0 or 1 for cache DCEs, always 1 for window DCEs,
54 always >= 1 for class DCEs */
57 static struct list dce_list
= LIST_INIT(dce_list
);
59 #define DCE_CACHE_SIZE 64
61 static BOOL CALLBACK
dc_hook( HDC hDC
, WORD code
, DWORD_PTR data
, LPARAM lParam
);
63 static const WCHAR displayW
[] = { 'D','I','S','P','L','A','Y',0 };
66 /***********************************************************************
69 static void dump_rdw_flags(UINT flags
)
72 if (flags
& RDW_INVALIDATE
) TRACE(" RDW_INVALIDATE");
73 if (flags
& RDW_INTERNALPAINT
) TRACE(" RDW_INTERNALPAINT");
74 if (flags
& RDW_ERASE
) TRACE(" RDW_ERASE");
75 if (flags
& RDW_VALIDATE
) TRACE(" RDW_VALIDATE");
76 if (flags
& RDW_NOINTERNALPAINT
) TRACE(" RDW_NOINTERNALPAINT");
77 if (flags
& RDW_NOERASE
) TRACE(" RDW_NOERASE");
78 if (flags
& RDW_NOCHILDREN
) TRACE(" RDW_NOCHILDREN");
79 if (flags
& RDW_ALLCHILDREN
) TRACE(" RDW_ALLCHILDREN");
80 if (flags
& RDW_UPDATENOW
) TRACE(" RDW_UPDATENOW");
81 if (flags
& RDW_ERASENOW
) TRACE(" RDW_ERASENOW");
82 if (flags
& RDW_FRAME
) TRACE(" RDW_FRAME");
83 if (flags
& RDW_NOFRAME
) TRACE(" RDW_NOFRAME");
90 RDW_NOINTERNALPAINT | \
99 if (flags
& ~RDW_FLAGS
) TRACE(" %04x", flags
& ~RDW_FLAGS
);
105 /***********************************************************************
106 * update_visible_region
108 * Set the visible region and X11 drawable for the DC associated to
111 static void update_visible_region( struct dce
*dce
)
113 struct window_surface
*surface
= NULL
;
117 DWORD flags
= dce
->flags
;
118 DWORD paint_flags
= 0;
120 RECT win_rect
, top_rect
;
123 /* don't clip siblings if using parent clip region */
124 if (flags
& DCX_PARENTCLIP
) flags
&= ~DCX_CLIPSIBLINGS
;
126 /* fetch the visible region from the server */
129 RGNDATA
*data
= HeapAlloc( GetProcessHeap(), 0, sizeof(*data
) + size
- 1 );
132 SERVER_START_REQ( get_visible_region
)
134 req
->window
= wine_server_user_handle( dce
->hwnd
);
136 wine_server_set_reply( req
, data
->Buffer
, size
);
137 if (!(status
= wine_server_call( req
)))
139 size_t reply_size
= wine_server_reply_size( reply
);
140 data
->rdh
.dwSize
= sizeof(data
->rdh
);
141 data
->rdh
.iType
= RDH_RECTANGLES
;
142 data
->rdh
.nCount
= reply_size
/ sizeof(RECT
);
143 data
->rdh
.nRgnSize
= reply_size
;
144 vis_rgn
= ExtCreateRegion( NULL
, data
->rdh
.dwSize
+ data
->rdh
.nRgnSize
, data
);
146 top_win
= wine_server_ptr_handle( reply
->top_win
);
147 win_rect
.left
= reply
->win_rect
.left
;
148 win_rect
.top
= reply
->win_rect
.top
;
149 win_rect
.right
= reply
->win_rect
.right
;
150 win_rect
.bottom
= reply
->win_rect
.bottom
;
151 top_rect
.left
= reply
->top_rect
.left
;
152 top_rect
.top
= reply
->top_rect
.top
;
153 top_rect
.right
= reply
->top_rect
.right
;
154 top_rect
.bottom
= reply
->top_rect
.bottom
;
155 paint_flags
= reply
->paint_flags
;
157 else size
= reply
->total_size
;
160 HeapFree( GetProcessHeap(), 0, data
);
161 } while (status
== STATUS_BUFFER_OVERFLOW
);
163 if (status
|| !vis_rgn
) return;
165 USER_Driver
->pGetDC( dce
->hdc
, dce
->hwnd
, top_win
, &win_rect
, &top_rect
, flags
);
167 if (dce
->clip_rgn
) CombineRgn( vis_rgn
, vis_rgn
, dce
->clip_rgn
,
168 (flags
& DCX_INTERSECTRGN
) ? RGN_AND
: RGN_DIFF
);
170 /* don't use a surface to paint the client area of OpenGL windows */
171 if (!(paint_flags
& SET_WINPOS_PIXEL_FORMAT
) || (flags
& DCX_WINDOW
))
173 win
= WIN_GetPtr( top_win
);
174 if (win
&& win
!= WND_DESKTOP
&& win
!= WND_OTHER_PROCESS
)
176 surface
= win
->surface
;
177 if (surface
) window_surface_add_ref( surface
);
178 WIN_ReleasePtr( win
);
182 if (!surface
) top_rect
= get_virtual_screen_rect();
183 __wine_set_visible_region( dce
->hdc
, vis_rgn
, &win_rect
, &top_rect
, surface
);
184 if (surface
) window_surface_release( surface
);
188 /***********************************************************************
191 static void release_dce( struct dce
*dce
)
193 if (!dce
->hwnd
) return; /* already released */
195 __wine_set_visible_region( dce
->hdc
, 0, &dummy_surface
.rect
, &dummy_surface
.rect
, &dummy_surface
);
196 USER_Driver
->pReleaseDC( dce
->hwnd
, dce
->hdc
);
198 if (dce
->clip_rgn
) DeleteObject( dce
->clip_rgn
);
201 dce
->flags
&= DCX_CACHE
;
205 /***********************************************************************
208 static void delete_clip_rgn( struct dce
*dce
)
210 if (!dce
->clip_rgn
) return; /* nothing to do */
212 dce
->flags
&= ~(DCX_EXCLUDERGN
| DCX_INTERSECTRGN
);
213 DeleteObject( dce
->clip_rgn
);
216 /* make it dirty so that the vis rgn gets recomputed next time */
217 SetHookFlags( dce
->hdc
, DCHF_INVALIDATEVISRGN
);
221 /***********************************************************************
224 * Allocate a new DCE.
226 static struct dce
*alloc_dce(void)
230 if (!(dce
= HeapAlloc( GetProcessHeap(), 0, sizeof(*dce
) ))) return NULL
;
231 if (!(dce
->hdc
= CreateDCW( displayW
, NULL
, NULL
, NULL
)))
233 HeapFree( GetProcessHeap(), 0, dce
);
241 /* store DCE handle in DC hook data field */
242 SetDCHook( dce
->hdc
, dc_hook
, (DWORD_PTR
)dce
);
243 SetHookFlags( dce
->hdc
, DCHF_INVALIDATEVISRGN
);
248 /***********************************************************************
251 static struct dce
*get_window_dce( HWND hwnd
)
254 WND
*win
= WIN_GetPtr( hwnd
);
256 if (!win
|| win
== WND_OTHER_PROCESS
|| win
== WND_DESKTOP
) return NULL
;
259 if (!dce
&& (dce
= get_class_dce( win
->class )))
264 WIN_ReleasePtr( win
);
266 if (!dce
) /* try to allocate one */
268 struct dce
*dce_to_free
= NULL
;
269 LONG class_style
= GetClassLongW( hwnd
, GCL_STYLE
);
271 if (class_style
& CS_CLASSDC
)
273 if (!(dce
= alloc_dce())) return NULL
;
275 win
= WIN_GetPtr( hwnd
);
276 if (win
&& win
!= WND_OTHER_PROCESS
&& win
!= WND_DESKTOP
)
278 if (win
->dce
) /* another thread beat us to it */
283 else if ((win
->dce
= set_class_dce( win
->class, dce
)) != dce
)
292 list_add_tail( &dce_list
, &dce
->entry
);
294 WIN_ReleasePtr( win
);
296 else dce_to_free
= dce
;
298 else if (class_style
& CS_OWNDC
)
300 if (!(dce
= alloc_dce())) return NULL
;
302 win
= WIN_GetPtr( hwnd
);
303 if (win
&& win
!= WND_OTHER_PROCESS
&& win
!= WND_DESKTOP
)
305 if (win
->dwStyle
& WS_CLIPCHILDREN
) dce
->flags
|= DCX_CLIPCHILDREN
;
306 if (win
->dwStyle
& WS_CLIPSIBLINGS
) dce
->flags
|= DCX_CLIPSIBLINGS
;
307 if (win
->dce
) /* another thread beat us to it */
316 list_add_tail( &dce_list
, &dce
->entry
);
318 WIN_ReleasePtr( win
);
320 else dce_to_free
= dce
;
325 SetDCHook( dce_to_free
->hdc
, NULL
, 0 );
326 DeleteDC( dce_to_free
->hdc
);
327 HeapFree( GetProcessHeap(), 0, dce_to_free
);
328 if (dce_to_free
== dce
)
336 /***********************************************************************
339 * Free a class or window DCE.
341 void free_dce( struct dce
*dce
, HWND hwnd
)
343 struct dce
*dce_to_free
= NULL
;
352 list_remove( &dce
->entry
);
355 else if (dce
->hwnd
== hwnd
)
361 /* now check for cache DCEs */
365 LIST_FOR_EACH_ENTRY( dce
, &dce_list
, struct dce
, entry
)
367 if (dce
->hwnd
!= hwnd
) continue;
368 if (!(dce
->flags
& DCX_CACHE
)) break;
370 if (dce
->count
) WARN( "GetDC() without ReleaseDC() for window %p\n", hwnd
);
380 SetDCHook( dce_to_free
->hdc
, NULL
, 0 );
381 DeleteDC( dce_to_free
->hdc
);
382 HeapFree( GetProcessHeap(), 0, dce_to_free
);
387 /***********************************************************************
390 * Mark the associated DC as dirty to force a refresh of the visible region
392 static void make_dc_dirty( struct dce
*dce
)
396 /* Don't bother with visible regions of unused DCEs */
397 TRACE("\tpurged %p dce [%p]\n", dce
, dce
->hwnd
);
402 /* Set dirty bits in the hDC and DCE structs */
403 TRACE("\tfixed up %p dce [%p]\n", dce
, dce
->hwnd
);
404 SetHookFlags( dce
->hdc
, DCHF_INVALIDATEVISRGN
);
409 /***********************************************************************
412 * It is called from SetWindowPos() - we have to
413 * mark as dirty all busy DCEs for windows that have pWnd->parent as
414 * an ancestor and whose client rect intersects with specified update
415 * rectangle. In addition, pWnd->parent DCEs may need to be updated if
416 * DCX_CLIPCHILDREN flag is set.
418 void invalidate_dce( WND
*win
, const RECT
*extra_rect
)
423 if (!win
->parent
) return;
425 GetWindowRect( win
->obj
.handle
, &window_rect
);
427 TRACE("%p parent %p %s (%s)\n",
428 win
->obj
.handle
, win
->parent
, wine_dbgstr_rect(&window_rect
), wine_dbgstr_rect(extra_rect
) );
430 /* walk all DCEs and fixup non-empty entries */
432 LIST_FOR_EACH_ENTRY( dce
, &dce_list
, struct dce
, entry
)
434 if (!dce
->hwnd
) continue;
436 TRACE( "%p: hwnd %p dcx %08x %s %s\n", dce
, dce
->hwnd
, dce
->flags
,
437 (dce
->flags
& DCX_CACHE
) ? "Cache" : "Owned", dce
->count
? "InUse" : "" );
439 if ((dce
->hwnd
== win
->parent
) && !(dce
->flags
& DCX_CLIPCHILDREN
))
440 continue; /* child window positions don't bother us */
442 /* if DCE window is a child of hwnd, it has to be invalidated */
443 if (dce
->hwnd
== win
->obj
.handle
|| IsChild( win
->obj
.handle
, dce
->hwnd
))
445 make_dc_dirty( dce
);
449 /* otherwise check if the window rectangle intersects this DCE window */
450 if (win
->parent
== dce
->hwnd
|| IsChild( win
->parent
, dce
->hwnd
))
453 GetWindowRect( dce
->hwnd
, &dce_rect
);
454 if (IntersectRect( &tmp
, &dce_rect
, &window_rect
) ||
455 (extra_rect
&& IntersectRect( &tmp
, &dce_rect
, extra_rect
)))
456 make_dc_dirty( dce
);
461 /***********************************************************************
464 * Implementation of ReleaseDC.
466 static INT
release_dc( HWND hwnd
, HDC hdc
, BOOL end_paint
)
471 TRACE("%p %p\n", hwnd
, hdc
);
474 dce
= (struct dce
*)GetDCHook( hdc
, NULL
);
475 if (dce
&& dce
->count
)
477 if (!(dce
->flags
& DCX_NORESETATTRS
)) SetHookFlags( dce
->hdc
, DCHF_RESETDC
);
478 if (end_paint
|| (dce
->flags
& DCX_CACHE
)) delete_clip_rgn( dce
);
479 if (dce
->flags
& DCX_CACHE
) dce
->count
= 0;
487 /***********************************************************************
490 * See "Undoc. Windows" for hints (DC, SetDCHook, SetHookFlags)..
492 static BOOL CALLBACK
dc_hook( HDC hDC
, WORD code
, DWORD_PTR data
, LPARAM lParam
)
495 struct dce
*dce
= (struct dce
*)data
;
497 TRACE("hDC = %p, %u\n", hDC
, code
);
499 if (!dce
) return FALSE
;
500 assert( dce
->hdc
== hDC
);
504 case DCHC_INVALIDVISRGN
:
505 /* GDI code calls this when it detects that the
506 * DC is dirty (usually after SetHookFlags()). This
507 * means that we have to recompute the visible region.
509 if (dce
->count
) update_visible_region( dce
);
510 else /* non-fatal but shouldn't happen */
511 WARN("DC is not in use!\n");
515 if (!(dce
->flags
& DCX_CACHE
))
517 WARN("Application trying to delete an owned DC %p\n", dce
->hdc
);
522 list_remove( &dce
->entry
);
523 if (dce
->clip_rgn
) DeleteObject( dce
->clip_rgn
);
524 HeapFree( GetProcessHeap(), 0, dce
);
533 /***********************************************************************
536 * Return update region (in screen coordinates) for a window.
538 static HRGN
get_update_region( HWND hwnd
, UINT
*flags
, HWND
*child
)
547 if (!(data
= HeapAlloc( GetProcessHeap(), 0, sizeof(*data
) + size
- 1 )))
549 SetLastError( ERROR_OUTOFMEMORY
);
553 SERVER_START_REQ( get_update_region
)
555 req
->window
= wine_server_user_handle( hwnd
);
556 req
->from_child
= wine_server_user_handle( child
? *child
: 0 );
558 wine_server_set_reply( req
, data
->Buffer
, size
);
559 if (!(status
= wine_server_call( req
)))
561 size_t reply_size
= wine_server_reply_size( reply
);
562 data
->rdh
.dwSize
= sizeof(data
->rdh
);
563 data
->rdh
.iType
= RDH_RECTANGLES
;
564 data
->rdh
.nCount
= reply_size
/ sizeof(RECT
);
565 data
->rdh
.nRgnSize
= reply_size
;
566 hrgn
= ExtCreateRegion( NULL
, data
->rdh
.dwSize
+ data
->rdh
.nRgnSize
, data
);
567 if (child
) *child
= wine_server_ptr_handle( reply
->child
);
568 *flags
= reply
->flags
;
570 else size
= reply
->total_size
;
573 HeapFree( GetProcessHeap(), 0, data
);
574 } while (status
== STATUS_BUFFER_OVERFLOW
);
576 if (status
) SetLastError( RtlNtStatusToDosError(status
) );
581 /***********************************************************************
584 * Get only the update flags, not the update region.
586 static BOOL
get_update_flags( HWND hwnd
, HWND
*child
, UINT
*flags
)
590 SERVER_START_REQ( get_update_region
)
592 req
->window
= wine_server_user_handle( hwnd
);
593 req
->from_child
= wine_server_user_handle( child
? *child
: 0 );
594 req
->flags
= *flags
| UPDATE_NOREGION
;
595 if ((ret
= !wine_server_call_err( req
)))
597 if (child
) *child
= wine_server_ptr_handle( reply
->child
);
598 *flags
= reply
->flags
;
606 /***********************************************************************
607 * redraw_window_rects
609 * Redraw part of a window.
611 static BOOL
redraw_window_rects( HWND hwnd
, UINT flags
, const RECT
*rects
, UINT count
)
615 if (!(flags
& (RDW_INVALIDATE
|RDW_VALIDATE
|RDW_INTERNALPAINT
|RDW_NOINTERNALPAINT
)))
616 return TRUE
; /* nothing to do */
618 SERVER_START_REQ( redraw_window
)
620 req
->window
= wine_server_user_handle( hwnd
);
622 wine_server_add_data( req
, rects
, count
* sizeof(RECT
) );
623 ret
= !wine_server_call_err( req
);
630 /***********************************************************************
633 * Send a WM_NCPAINT message if needed, and return the resulting update region (in screen coords).
634 * Helper for erase_now and BeginPaint.
636 static HRGN
send_ncpaint( HWND hwnd
, HWND
*child
, UINT
*flags
)
638 HRGN whole_rgn
= get_update_region( hwnd
, flags
, child
);
641 if (child
) hwnd
= *child
;
643 if (hwnd
== GetDesktopWindow()) return whole_rgn
;
650 /* check if update rgn overlaps with nonclient area */
651 type
= GetRgnBox( whole_rgn
, &update
);
652 WIN_GetRectangles( hwnd
, COORDS_SCREEN
, 0, &client
);
654 if ((*flags
& UPDATE_NONCLIENT
) ||
655 update
.left
< client
.left
|| update
.top
< client
.top
||
656 update
.right
> client
.right
|| update
.bottom
> client
.bottom
)
658 client_rgn
= CreateRectRgnIndirect( &client
);
659 CombineRgn( client_rgn
, client_rgn
, whole_rgn
, RGN_AND
);
661 /* check if update rgn contains complete nonclient area */
662 if (type
== SIMPLEREGION
)
665 GetWindowRect( hwnd
, &window
);
666 if (EqualRect( &window
, &update
))
668 DeleteObject( whole_rgn
);
675 client_rgn
= whole_rgn
;
679 if (whole_rgn
) /* NOTE: WM_NCPAINT allows wParam to be 1 */
681 if (*flags
& UPDATE_NONCLIENT
) SendMessageW( hwnd
, WM_NCPAINT
, (WPARAM
)whole_rgn
, 0 );
682 if (whole_rgn
> (HRGN
)1) DeleteObject( whole_rgn
);
689 /***********************************************************************
692 * Send a WM_ERASEBKGND message if needed, and optionally return the DC for painting.
693 * If a DC is requested, the region is selected into it. In all cases the region is deleted.
694 * Helper for erase_now and BeginPaint.
696 static BOOL
send_erase( HWND hwnd
, UINT flags
, HRGN client_rgn
,
697 RECT
*clip_rect
, HDC
*hdc_ret
)
699 BOOL need_erase
= (flags
& UPDATE_DELAYED_ERASE
) != 0;
703 if (!clip_rect
) clip_rect
= &dummy
;
704 if (hdc_ret
|| (flags
& UPDATE_ERASE
))
706 UINT dcx_flags
= DCX_INTERSECTRGN
| DCX_USESTYLE
;
707 if (IsIconic(hwnd
)) dcx_flags
|= DCX_WINDOW
;
709 if ((hdc
= GetDCEx( hwnd
, client_rgn
, dcx_flags
)))
711 INT type
= GetClipBox( hdc
, clip_rect
);
713 if (flags
& UPDATE_ERASE
)
715 /* don't erase if the clip box is empty */
716 if (type
!= NULLREGION
)
717 need_erase
= !SendMessageW( hwnd
, WM_ERASEBKGND
, (WPARAM
)hdc
, 0 );
719 if (!hdc_ret
) release_dc( hwnd
, hdc
, TRUE
);
722 if (hdc_ret
) *hdc_ret
= hdc
;
724 if (!hdc
) DeleteObject( client_rgn
);
729 /***********************************************************************
732 * Implementation of RDW_ERASENOW behavior.
734 void erase_now( HWND hwnd
, UINT rdw_flags
)
738 BOOL need_erase
= FALSE
;
740 /* loop while we find a child to repaint */
743 UINT flags
= UPDATE_NONCLIENT
| UPDATE_ERASE
;
745 if (rdw_flags
& RDW_NOCHILDREN
) flags
|= UPDATE_NOCHILDREN
;
746 else if (rdw_flags
& RDW_ALLCHILDREN
) flags
|= UPDATE_ALLCHILDREN
;
747 if (need_erase
) flags
|= UPDATE_DELAYED_ERASE
;
749 if (!(hrgn
= send_ncpaint( hwnd
, &child
, &flags
))) break;
750 need_erase
= send_erase( child
, flags
, hrgn
, NULL
, NULL
);
752 if (!flags
) break; /* nothing more to do */
753 if ((rdw_flags
& RDW_NOCHILDREN
) && !need_erase
) break;
758 /***********************************************************************
761 * Move the window bits when a window is resized or its surface recreated.
763 void move_window_bits( HWND hwnd
, struct window_surface
*old_surface
,
764 struct window_surface
*new_surface
,
765 const RECT
*visible_rect
, const RECT
*old_visible_rect
,
766 const RECT
*client_rect
, const RECT
*valid_rects
)
768 RECT dst
= valid_rects
[0];
769 RECT src
= valid_rects
[1];
771 if (new_surface
!= old_surface
||
772 src
.left
- old_visible_rect
->left
!= dst
.left
- visible_rect
->left
||
773 src
.top
- old_visible_rect
->top
!= dst
.top
- visible_rect
->top
)
775 char buffer
[FIELD_OFFSET( BITMAPINFO
, bmiColors
[256] )];
776 BITMAPINFO
*info
= (BITMAPINFO
*)buffer
;
778 UINT flags
= UPDATE_NOCHILDREN
;
779 HRGN rgn
= get_update_region( hwnd
, &flags
, NULL
);
780 HDC hdc
= GetDCEx( hwnd
, rgn
, DCX_CACHE
| DCX_EXCLUDERGN
);
782 OffsetRect( &dst
, -client_rect
->left
, -client_rect
->top
);
783 TRACE( "copying %s -> %s\n", wine_dbgstr_rect(&src
), wine_dbgstr_rect(&dst
) );
784 bits
= old_surface
->funcs
->get_info( old_surface
, info
);
785 old_surface
->funcs
->lock( old_surface
);
786 SetDIBitsToDevice( hdc
, dst
.left
, dst
.top
, dst
.right
- dst
.left
, dst
.bottom
- dst
.top
,
787 src
.left
- old_visible_rect
->left
- old_surface
->rect
.left
,
788 old_surface
->rect
.bottom
- (src
.bottom
- old_visible_rect
->top
),
789 0, old_surface
->rect
.bottom
- old_surface
->rect
.top
,
790 bits
, info
, DIB_RGB_COLORS
);
791 old_surface
->funcs
->unlock( old_surface
);
792 ReleaseDC( hwnd
, hdc
);
797 /***********************************************************************
800 * Implementation of RDW_UPDATENOW behavior.
802 static void update_now( HWND hwnd
, UINT rdw_flags
)
806 /* desktop window never gets WM_PAINT, only WM_ERASEBKGND */
807 if (hwnd
== GetDesktopWindow()) erase_now( hwnd
, rdw_flags
| RDW_NOCHILDREN
);
809 /* loop while we find a child to repaint */
812 UINT flags
= UPDATE_PAINT
| UPDATE_INTERNALPAINT
;
814 if (rdw_flags
& RDW_NOCHILDREN
) flags
|= UPDATE_NOCHILDREN
;
815 else if (rdw_flags
& RDW_ALLCHILDREN
) flags
|= UPDATE_ALLCHILDREN
;
817 if (!get_update_flags( hwnd
, &child
, &flags
)) break;
818 if (!flags
) break; /* nothing more to do */
820 SendMessageW( child
, WM_PAINT
, 0, 0 );
821 if (rdw_flags
& RDW_NOCHILDREN
) break;
826 /*************************************************************************
829 * Helper for ScrollWindowEx:
830 * If the return value is 0, no special caret handling is necessary.
831 * Otherwise the return value is the handle of the window that owns the
832 * caret. Its caret needs to be hidden during the scroll operation and
833 * moved to new_caret_pos if move_caret is TRUE.
835 static HWND
fix_caret(HWND hWnd
, const RECT
*scroll_rect
, INT dx
, INT dy
,
836 UINT flags
, LPBOOL move_caret
, LPPOINT new_caret_pos
)
839 RECT rect
, mapped_rcCaret
;
840 BOOL hide_caret
= FALSE
;
842 info
.cbSize
= sizeof(info
);
843 if (!GetGUIThreadInfo( GetCurrentThreadId(), &info
)) return 0;
844 if (!info
.hwndCaret
) return 0;
846 if (info
.hwndCaret
== hWnd
)
848 /* Move the caret if it's (partially) in the source rectangle */
849 if (IntersectRect(&rect
, scroll_rect
, &info
.rcCaret
))
853 new_caret_pos
->x
= info
.rcCaret
.left
+ dx
;
854 new_caret_pos
->y
= info
.rcCaret
.top
+ dy
;
860 /* Hide the caret if it's in the destination rectangle */
862 OffsetRect(&rect
, dx
, dy
);
863 hide_caret
= IntersectRect(&rect
, &rect
, &info
.rcCaret
);
868 if ((flags
& SW_SCROLLCHILDREN
) && IsChild(hWnd
, info
.hwndCaret
))
872 /* Hide the caret if it's in the source or in the destination
874 mapped_rcCaret
= info
.rcCaret
;
875 MapWindowPoints(info
.hwndCaret
, hWnd
, (LPPOINT
)&mapped_rcCaret
, 2);
877 if (IntersectRect(&rect
, scroll_rect
, &mapped_rcCaret
))
884 OffsetRect(&rect
, dx
, dy
);
885 hide_caret
= IntersectRect(&rect
, &rect
, &mapped_rcCaret
);
894 HideCaret(info
.hwndCaret
);
895 return info
.hwndCaret
;
902 /***********************************************************************
903 * BeginPaint (USER32.@)
905 HDC WINAPI
BeginPaint( HWND hwnd
, PAINTSTRUCT
*lps
)
911 UINT flags
= UPDATE_NONCLIENT
| UPDATE_ERASE
| UPDATE_PAINT
| UPDATE_INTERNALPAINT
| UPDATE_NOCHILDREN
;
915 if (!(hrgn
= send_ncpaint( hwnd
, NULL
, &flags
))) return 0;
917 erase
= send_erase( hwnd
, flags
, hrgn
, &rect
, &hdc
);
919 TRACE("hdc = %p box = (%s), fErase = %d\n", hdc
, wine_dbgstr_rect(&rect
), erase
);
923 release_dc( hwnd
, hdc
, TRUE
);
933 /***********************************************************************
934 * EndPaint (USER32.@)
936 BOOL WINAPI
EndPaint( HWND hwnd
, const PAINTSTRUCT
*lps
)
939 flush_window_surfaces( FALSE
);
940 if (!lps
) return FALSE
;
941 release_dc( hwnd
, lps
->hdc
, TRUE
);
946 /***********************************************************************
949 HDC WINAPI
GetDCEx( HWND hwnd
, HRGN hrgnClip
, DWORD flags
)
951 const DWORD clip_flags
= DCX_PARENTCLIP
| DCX_CLIPSIBLINGS
| DCX_CLIPCHILDREN
| DCX_WINDOW
;
952 const DWORD user_flags
= clip_flags
| DCX_NORESETATTRS
; /* flags that can be set by user */
954 BOOL bUpdateVisRgn
= TRUE
;
956 LONG window_style
= GetWindowLongW( hwnd
, GWL_STYLE
);
958 if (!hwnd
) hwnd
= GetDesktopWindow();
959 else hwnd
= WIN_GetFullHandle( hwnd
);
961 TRACE("hwnd %p, hrgnClip %p, flags %08x\n", hwnd
, hrgnClip
, flags
);
963 if (!IsWindow(hwnd
)) return 0;
967 if (flags
& (DCX_WINDOW
| DCX_PARENTCLIP
)) flags
|= DCX_CACHE
;
969 if (flags
& DCX_USESTYLE
)
971 flags
&= ~(DCX_CLIPCHILDREN
| DCX_CLIPSIBLINGS
| DCX_PARENTCLIP
);
973 if (window_style
& WS_CLIPSIBLINGS
) flags
|= DCX_CLIPSIBLINGS
;
975 if (!(flags
& DCX_WINDOW
))
977 if (GetClassLongW( hwnd
, GCL_STYLE
) & CS_PARENTDC
) flags
|= DCX_PARENTCLIP
;
979 if (window_style
& WS_CLIPCHILDREN
&& !(window_style
& WS_MINIMIZE
))
980 flags
|= DCX_CLIPCHILDREN
;
984 if (flags
& DCX_WINDOW
) flags
&= ~DCX_CLIPCHILDREN
;
986 parent
= GetAncestor( hwnd
, GA_PARENT
);
987 if (!parent
|| (parent
== GetDesktopWindow()))
988 flags
= (flags
& ~DCX_PARENTCLIP
) | DCX_CLIPSIBLINGS
;
990 /* it seems parent clip is ignored when clipping siblings or children */
991 if (flags
& (DCX_CLIPSIBLINGS
| DCX_CLIPCHILDREN
)) flags
&= ~DCX_PARENTCLIP
;
993 if( flags
& DCX_PARENTCLIP
)
995 LONG parent_style
= GetWindowLongW( parent
, GWL_STYLE
);
996 if( (window_style
& WS_VISIBLE
) && (parent_style
& WS_VISIBLE
) )
998 flags
&= ~DCX_CLIPCHILDREN
;
999 if (parent_style
& WS_CLIPSIBLINGS
) flags
|= DCX_CLIPSIBLINGS
;
1003 /* find a suitable DCE */
1005 if ((flags
& DCX_CACHE
) || !(dce
= get_window_dce( hwnd
)))
1007 struct dce
*dceEmpty
= NULL
, *dceUnused
= NULL
, *found
= NULL
;
1008 unsigned int count
= 0;
1010 /* Strategy: First, we attempt to find a non-empty but unused DCE with
1011 * compatible flags. Next, we look for an empty entry. If the cache is
1012 * full we have to purge one of the unused entries.
1015 LIST_FOR_EACH_ENTRY( dce
, &dce_list
, struct dce
, entry
)
1017 if (!(dce
->flags
& DCX_CACHE
)) break;
1019 if (dce
->count
) continue;
1021 if (!dce
->hwnd
) dceEmpty
= dce
;
1022 else if ((dce
->hwnd
== hwnd
) && !((dce
->flags
^ flags
) & clip_flags
))
1024 TRACE( "found valid %p dce [%p], flags %08x\n", dce
, hwnd
, dce
->flags
);
1026 bUpdateVisRgn
= FALSE
;
1030 if (!found
) found
= dceEmpty
;
1031 if (!found
&& count
>= DCE_CACHE_SIZE
) found
= dceUnused
;
1034 if (dce
) dce
->count
= 1;
1038 /* if there's no dce empty or unused, allocate a new one */
1041 if (!(dce
= alloc_dce())) return 0;
1042 dce
->flags
= DCX_CACHE
;
1044 list_add_head( &dce_list
, &dce
->entry
);
1050 flags
|= DCX_NORESETATTRS
;
1051 if (dce
->hwnd
== hwnd
)
1053 TRACE("\tskipping hVisRgn update\n");
1054 bUpdateVisRgn
= FALSE
; /* updated automatically, via DCHook() */
1058 /* we should free dce->clip_rgn here, but Windows apparently doesn't */
1059 dce
->flags
&= ~(DCX_EXCLUDERGN
| DCX_INTERSECTRGN
);
1064 if (flags
& (DCX_INTERSECTRGN
| DCX_EXCLUDERGN
))
1066 /* if the extra clip region has changed, get rid of the old one */
1067 if (dce
->clip_rgn
!= hrgnClip
|| ((flags
^ dce
->flags
) & (DCX_INTERSECTRGN
| DCX_EXCLUDERGN
)))
1068 delete_clip_rgn( dce
);
1069 dce
->clip_rgn
= hrgnClip
;
1070 if (!dce
->clip_rgn
) dce
->clip_rgn
= CreateRectRgn( 0, 0, 0, 0 );
1071 dce
->flags
|= flags
& (DCX_INTERSECTRGN
| DCX_EXCLUDERGN
);
1072 bUpdateVisRgn
= TRUE
;
1075 if (GetWindowLongW( hwnd
, GWL_EXSTYLE
) & WS_EX_LAYOUTRTL
) SetLayout( dce
->hdc
, LAYOUT_RTL
);
1078 dce
->flags
= (dce
->flags
& ~user_flags
) | (flags
& user_flags
);
1080 if (SetHookFlags( dce
->hdc
, DCHF_VALIDATEVISRGN
)) bUpdateVisRgn
= TRUE
; /* DC was dirty */
1082 if (bUpdateVisRgn
) update_visible_region( dce
);
1084 TRACE("(%p,%p,0x%x): returning %p\n", hwnd
, hrgnClip
, flags
, dce
->hdc
);
1089 /***********************************************************************
1092 * Get a device context.
1095 * Success: Handle to the device context
1098 HDC WINAPI
GetDC( HWND hwnd
)
1100 if (!hwnd
) return GetDCEx( 0, 0, DCX_CACHE
| DCX_WINDOW
);
1101 return GetDCEx( hwnd
, 0, DCX_USESTYLE
);
1105 /***********************************************************************
1106 * GetWindowDC (USER32.@)
1108 HDC WINAPI
GetWindowDC( HWND hwnd
)
1110 return GetDCEx( hwnd
, 0, DCX_USESTYLE
| DCX_WINDOW
);
1114 /***********************************************************************
1115 * ReleaseDC (USER32.@)
1117 * Release a device context.
1120 * Success: Non-zero. Resources used by hdc are released.
1123 INT WINAPI
ReleaseDC( HWND hwnd
, HDC hdc
)
1125 return release_dc( hwnd
, hdc
, FALSE
);
1129 /**********************************************************************
1130 * WindowFromDC (USER32.@)
1132 HWND WINAPI
WindowFromDC( HDC hdc
)
1138 dce
= (struct dce
*)GetDCHook( hdc
, NULL
);
1139 if (dce
) hwnd
= dce
->hwnd
;
1145 /***********************************************************************
1146 * LockWindowUpdate (USER32.@)
1148 * Enables or disables painting in the chosen window.
1151 * hwnd [I] handle to a window.
1154 * If successful, returns nonzero value. Otherwise,
1158 * You can lock only one window at a time.
1160 BOOL WINAPI
LockWindowUpdate( HWND hwnd
)
1162 static HWND lockedWnd
;
1164 FIXME("(%p), partial stub!\n",hwnd
);
1171 /* Unlock lockedWnd */
1172 /* FIXME: Do something */
1176 /* Attempted to lock a second window */
1177 /* Return FALSE and do nothing */
1188 /***********************************************************************
1189 * RedrawWindow (USER32.@)
1191 BOOL WINAPI
RedrawWindow( HWND hwnd
, const RECT
*rect
, HRGN hrgn
, UINT flags
)
1193 static const RECT empty
;
1196 if (!hwnd
) hwnd
= GetDesktopWindow();
1203 GetRgnBox( hrgn
, &r
);
1204 TRACE( "%p region %p box %s ", hwnd
, hrgn
, wine_dbgstr_rect(&r
) );
1207 TRACE( "%p rect %s ", hwnd
, wine_dbgstr_rect(rect
) );
1209 TRACE( "%p whole window ", hwnd
);
1211 dump_rdw_flags(flags
);
1214 /* process pending expose events before painting */
1215 if (flags
& RDW_UPDATENOW
) USER_Driver
->pMsgWaitForMultipleObjectsEx( 0, NULL
, 0, QS_PAINT
, 0 );
1219 if (IsRectEmpty( rect
)) rect
= &empty
;
1220 ret
= redraw_window_rects( hwnd
, flags
, rect
, 1 );
1224 ret
= redraw_window_rects( hwnd
, flags
, NULL
, 0 );
1226 else /* need to build a list of the region rectangles */
1231 if (!(size
= GetRegionData( hrgn
, 0, NULL
))) return FALSE
;
1232 if (!(data
= HeapAlloc( GetProcessHeap(), 0, size
))) return FALSE
;
1233 GetRegionData( hrgn
, size
, data
);
1234 if (!data
->rdh
.nCount
) /* empty region -> use a single all-zero rectangle */
1235 ret
= redraw_window_rects( hwnd
, flags
, &empty
, 1 );
1237 ret
= redraw_window_rects( hwnd
, flags
, (const RECT
*)data
->Buffer
, data
->rdh
.nCount
);
1238 HeapFree( GetProcessHeap(), 0, data
);
1241 if (flags
& RDW_UPDATENOW
) update_now( hwnd
, flags
);
1242 else if (flags
& RDW_ERASENOW
) erase_now( hwnd
, flags
);
1248 /***********************************************************************
1249 * UpdateWindow (USER32.@)
1251 BOOL WINAPI
UpdateWindow( HWND hwnd
)
1255 SetLastError( ERROR_INVALID_WINDOW_HANDLE
);
1259 return RedrawWindow( hwnd
, NULL
, 0, RDW_UPDATENOW
| RDW_ALLCHILDREN
);
1263 /***********************************************************************
1264 * InvalidateRgn (USER32.@)
1266 BOOL WINAPI
InvalidateRgn( HWND hwnd
, HRGN hrgn
, BOOL erase
)
1270 SetLastError( ERROR_INVALID_WINDOW_HANDLE
);
1274 return RedrawWindow(hwnd
, NULL
, hrgn
, RDW_INVALIDATE
| (erase
? RDW_ERASE
: 0) );
1278 /***********************************************************************
1279 * InvalidateRect (USER32.@)
1281 * MSDN: if hwnd parameter is NULL, InvalidateRect invalidates and redraws
1282 * all windows and sends WM_ERASEBKGND and WM_NCPAINT.
1284 BOOL WINAPI
InvalidateRect( HWND hwnd
, const RECT
*rect
, BOOL erase
)
1286 UINT flags
= RDW_INVALIDATE
| (erase
? RDW_ERASE
: 0);
1290 flags
= RDW_ALLCHILDREN
| RDW_INVALIDATE
| RDW_FRAME
| RDW_ERASE
| RDW_ERASENOW
;
1294 return RedrawWindow( hwnd
, rect
, 0, flags
);
1298 /***********************************************************************
1299 * ValidateRgn (USER32.@)
1301 BOOL WINAPI
ValidateRgn( HWND hwnd
, HRGN hrgn
)
1305 SetLastError( ERROR_INVALID_WINDOW_HANDLE
);
1309 return RedrawWindow( hwnd
, NULL
, hrgn
, RDW_VALIDATE
);
1313 /***********************************************************************
1314 * ValidateRect (USER32.@)
1316 * MSDN: if hwnd parameter is NULL, ValidateRect invalidates and redraws
1317 * all windows and sends WM_ERASEBKGND and WM_NCPAINT.
1319 BOOL WINAPI
ValidateRect( HWND hwnd
, const RECT
*rect
)
1321 UINT flags
= RDW_VALIDATE
;
1325 flags
= RDW_ALLCHILDREN
| RDW_INVALIDATE
| RDW_FRAME
| RDW_ERASE
| RDW_ERASENOW
;
1329 return RedrawWindow( hwnd
, rect
, 0, flags
);
1333 /***********************************************************************
1334 * GetUpdateRgn (USER32.@)
1336 INT WINAPI
GetUpdateRgn( HWND hwnd
, HRGN hrgn
, BOOL erase
)
1339 UINT flags
= UPDATE_NOCHILDREN
;
1342 if (erase
) flags
|= UPDATE_NONCLIENT
| UPDATE_ERASE
;
1344 if ((update_rgn
= send_ncpaint( hwnd
, NULL
, &flags
)))
1346 retval
= CombineRgn( hrgn
, update_rgn
, 0, RGN_COPY
);
1347 if (send_erase( hwnd
, flags
, update_rgn
, NULL
, NULL
))
1349 flags
= UPDATE_DELAYED_ERASE
;
1350 get_update_flags( hwnd
, NULL
, &flags
);
1352 /* map region to client coordinates */
1353 map_window_region( 0, hwnd
, hrgn
);
1359 /***********************************************************************
1360 * GetUpdateRect (USER32.@)
1362 BOOL WINAPI
GetUpdateRect( HWND hwnd
, LPRECT rect
, BOOL erase
)
1364 UINT flags
= UPDATE_NOCHILDREN
;
1368 if (erase
) flags
|= UPDATE_NONCLIENT
| UPDATE_ERASE
;
1370 if (!(update_rgn
= send_ncpaint( hwnd
, NULL
, &flags
))) return FALSE
;
1374 if (GetRgnBox( update_rgn
, rect
) != NULLREGION
)
1376 HDC hdc
= GetDCEx( hwnd
, 0, DCX_USESTYLE
);
1377 DWORD layout
= SetLayout( hdc
, 0 ); /* MapWindowPoints mirrors already */
1378 MapWindowPoints( 0, hwnd
, (LPPOINT
)rect
, 2 );
1379 DPtoLP( hdc
, (LPPOINT
)rect
, 2 );
1380 SetLayout( hdc
, layout
);
1381 ReleaseDC( hwnd
, hdc
);
1384 need_erase
= send_erase( hwnd
, flags
, update_rgn
, NULL
, NULL
);
1386 /* check if we still have an update region */
1387 flags
= UPDATE_PAINT
| UPDATE_NOCHILDREN
;
1388 if (need_erase
) flags
|= UPDATE_DELAYED_ERASE
;
1389 return (get_update_flags( hwnd
, NULL
, &flags
) && (flags
& UPDATE_PAINT
));
1393 /***********************************************************************
1394 * ExcludeUpdateRgn (USER32.@)
1396 INT WINAPI
ExcludeUpdateRgn( HDC hdc
, HWND hwnd
)
1398 HRGN update_rgn
= CreateRectRgn( 0, 0, 0, 0 );
1399 INT ret
= GetUpdateRgn( hwnd
, update_rgn
, FALSE
);
1405 GetDCOrgEx( hdc
, &pt
);
1406 MapWindowPoints( 0, hwnd
, &pt
, 1 );
1407 OffsetRgn( update_rgn
, -pt
.x
, -pt
.y
);
1408 ret
= ExtSelectClipRgn( hdc
, update_rgn
, RGN_DIFF
);
1410 DeleteObject( update_rgn
);
1415 static INT
scroll_window( HWND hwnd
, INT dx
, INT dy
, const RECT
*rect
, const RECT
*clipRect
,
1416 HRGN hrgnUpdate
, LPRECT rcUpdate
, UINT flags
, BOOL is_ex
)
1418 INT retVal
= NULLREGION
;
1419 BOOL bOwnRgn
= TRUE
;
1420 BOOL bUpdate
= (rcUpdate
|| hrgnUpdate
|| flags
& (SW_INVALIDATE
| SW_ERASE
));
1423 HRGN hrgnWinupd
= 0;
1426 HWND hwndCaret
= NULL
;
1427 BOOL moveCaret
= FALSE
;
1430 TRACE( "%p, %d,%d hrgnUpdate=%p rcUpdate = %p %s %04x\n",
1431 hwnd
, dx
, dy
, hrgnUpdate
, rcUpdate
, wine_dbgstr_rect(rect
), flags
);
1432 TRACE( "clipRect = %s\n", wine_dbgstr_rect(clipRect
));
1433 if( flags
& ~( SW_SCROLLCHILDREN
| SW_INVALIDATE
| SW_ERASE
))
1434 FIXME("some flags (%04x) are unhandled\n", flags
);
1436 rdw_flags
= (flags
& SW_ERASE
) && (flags
& SW_INVALIDATE
) ?
1437 RDW_INVALIDATE
| RDW_ERASE
: RDW_INVALIDATE
;
1439 if (!WIN_IsWindowDrawable( hwnd
, TRUE
)) return ERROR
;
1440 hwnd
= WIN_GetFullHandle( hwnd
);
1442 GetClientRect(hwnd
, &rc
);
1444 if (clipRect
) IntersectRect(&cliprc
,&rc
,clipRect
);
1447 if (rect
) IntersectRect(&rc
, &rc
, rect
);
1449 if( hrgnUpdate
) bOwnRgn
= FALSE
;
1450 else if( bUpdate
) hrgnUpdate
= CreateRectRgn( 0, 0, 0, 0 );
1452 newCaretPos
.x
= newCaretPos
.y
= 0;
1454 if( !IsRectEmpty(&cliprc
) && (dx
|| dy
)) {
1456 DWORD style
= GetWindowLongW( hwnd
, GWL_STYLE
);
1458 hwndCaret
= fix_caret(hwnd
, &rc
, dx
, dy
, flags
, &moveCaret
, &newCaretPos
);
1460 if (is_ex
) dcxflags
|= DCX_CACHE
;
1461 if( style
& WS_CLIPSIBLINGS
) dcxflags
|= DCX_CLIPSIBLINGS
;
1462 if( GetClassLongW( hwnd
, GCL_STYLE
) & CS_PARENTDC
)
1463 dcxflags
|= DCX_PARENTCLIP
;
1464 if( !(flags
& SW_SCROLLCHILDREN
) && (style
& WS_CLIPCHILDREN
))
1465 dcxflags
|= DCX_CLIPCHILDREN
;
1466 hDC
= GetDCEx( hwnd
, 0, dcxflags
);
1469 ScrollDC( hDC
, dx
, dy
, &rc
, &cliprc
, hrgnUpdate
, rcUpdate
);
1471 ReleaseDC( hwnd
, hDC
);
1474 RedrawWindow( hwnd
, NULL
, hrgnUpdate
, rdw_flags
);
1477 /* If the windows has an update region, this must be
1478 * scrolled as well. Keep a copy in hrgnWinupd
1479 * to be added to hrngUpdate at the end. */
1480 hrgnTemp
= CreateRectRgn( 0, 0, 0, 0 );
1481 retVal
= GetUpdateRgn( hwnd
, hrgnTemp
, FALSE
);
1482 if (retVal
!= NULLREGION
)
1484 HRGN hrgnClip
= CreateRectRgnIndirect(&cliprc
);
1486 hrgnWinupd
= CreateRectRgn( 0, 0, 0, 0);
1487 CombineRgn( hrgnWinupd
, hrgnTemp
, 0, RGN_COPY
);
1489 OffsetRgn( hrgnTemp
, dx
, dy
);
1490 CombineRgn( hrgnTemp
, hrgnTemp
, hrgnClip
, RGN_AND
);
1492 CombineRgn( hrgnWinupd
, hrgnWinupd
, hrgnTemp
, RGN_OR
);
1493 RedrawWindow( hwnd
, NULL
, hrgnTemp
, rdw_flags
);
1495 /* Catch the case where the scrolling amount exceeds the size of the
1496 * original window. This generated a second update area that is the
1497 * location where the original scrolled content would end up.
1498 * This second region is not returned by the ScrollDC and sets
1499 * ScrollWindowEx apart from just a ScrollDC.
1501 * This has been verified with testing on windows.
1503 if (abs(dx
) > abs(rc
.right
- rc
.left
) ||
1504 abs(dy
) > abs(rc
.bottom
- rc
.top
))
1506 SetRectRgn( hrgnTemp
, rc
.left
+ dx
, rc
.top
+ dy
, rc
.right
+dx
, rc
.bottom
+ dy
);
1507 CombineRgn( hrgnTemp
, hrgnTemp
, hrgnClip
, RGN_AND
);
1508 CombineRgn( hrgnUpdate
, hrgnUpdate
, hrgnTemp
, RGN_OR
);
1513 GetRgnBox( hrgnTemp
, &rcTemp
);
1514 UnionRect( rcUpdate
, rcUpdate
, &rcTemp
);
1518 CombineRgn( hrgnWinupd
, hrgnWinupd
, hrgnTemp
, RGN_OR
);
1520 DeleteObject( hrgnClip
);
1522 DeleteObject( hrgnTemp
);
1524 /* nothing was scrolled */
1526 SetRectRgn( hrgnUpdate
, 0, 0, 0, 0 );
1527 SetRectEmpty( rcUpdate
);
1530 if( flags
& SW_SCROLLCHILDREN
)
1532 HWND
*list
= WIN_ListChildren( hwnd
);
1537 for (i
= 0; list
[i
]; i
++)
1539 WIN_GetRectangles( list
[i
], COORDS_PARENT
, &r
, NULL
);
1540 if (!rect
|| IntersectRect(&dummy
, &r
, rect
))
1541 SetWindowPos( list
[i
], 0, r
.left
+ dx
, r
.top
+ dy
, 0, 0,
1542 SWP_NOZORDER
| SWP_NOSIZE
| SWP_NOACTIVATE
|
1543 SWP_NOREDRAW
| SWP_DEFERERASE
);
1545 HeapFree( GetProcessHeap(), 0, list
);
1549 if( flags
& (SW_INVALIDATE
| SW_ERASE
) )
1550 RedrawWindow( hwnd
, NULL
, hrgnUpdate
, rdw_flags
|
1551 ((flags
& SW_SCROLLCHILDREN
) ? RDW_ALLCHILDREN
: 0 ) );
1554 CombineRgn( hrgnUpdate
, hrgnUpdate
, hrgnWinupd
, RGN_OR
);
1555 DeleteObject( hrgnWinupd
);
1559 if ( moveCaret
) SetCaretPos( newCaretPos
.x
, newCaretPos
.y
);
1560 ShowCaret(hwndCaret
);
1563 if( bOwnRgn
&& hrgnUpdate
) DeleteObject( hrgnUpdate
);
1569 /*************************************************************************
1570 * ScrollWindowEx (USER32.@)
1572 * Note: contrary to what the doc says, pixels that are scrolled from the
1573 * outside of clipRect to the inside are NOT painted.
1576 INT WINAPI
ScrollWindowEx( HWND hwnd
, INT dx
, INT dy
,
1577 const RECT
*rect
, const RECT
*clipRect
,
1578 HRGN hrgnUpdate
, LPRECT rcUpdate
,
1581 return scroll_window( hwnd
, dx
, dy
, rect
, clipRect
, hrgnUpdate
, rcUpdate
, flags
, TRUE
);
1584 /*************************************************************************
1585 * ScrollWindow (USER32.@)
1588 BOOL WINAPI
ScrollWindow( HWND hwnd
, INT dx
, INT dy
,
1589 const RECT
*rect
, const RECT
*clipRect
)
1591 return scroll_window( hwnd
, dx
, dy
, rect
, clipRect
, 0, NULL
,
1592 SW_INVALIDATE
| SW_ERASE
| (rect
? 0 : SW_SCROLLCHILDREN
), FALSE
) != ERROR
;
1596 /*************************************************************************
1597 * ScrollDC (USER32.@)
1599 * dx, dy, lprcScroll and lprcClip are all in logical coordinates (msdn is
1600 * wrong) hrgnUpdate is returned in device coordinates with rcUpdate in
1601 * logical coordinates.
1603 BOOL WINAPI
ScrollDC( HDC hdc
, INT dx
, INT dy
, const RECT
*scroll
, const RECT
*clip
,
1604 HRGN ret_update_rgn
, LPRECT update_rect
)
1607 HRGN update_rgn
= ret_update_rgn
;
1608 RECT src_rect
, clip_rect
, offset
;
1610 HRGN dstrgn
, cliprgn
, visrgn
;
1613 TRACE( "dx,dy %d,%d scroll %s clip %s update %p rect %p\n",
1614 dx
, dy
, wine_dbgstr_rect(scroll
), wine_dbgstr_rect(clip
), ret_update_rgn
, update_rect
);
1616 /* get the visible region */
1617 visrgn
= CreateRectRgn( 0, 0, 0, 0 );
1618 GetRandomRgn( hdc
, visrgn
, SYSRGN
);
1619 if (!(GetVersion() & 0x80000000))
1622 GetDCOrgEx( hdc
, &org
);
1623 OffsetRgn( visrgn
, -org
.x
, -org
.y
);
1626 /* intersect with the clipping region if the DC has one */
1627 cliprgn
= CreateRectRgn( 0, 0, 0, 0);
1628 if (GetClipRgn( hdc
, cliprgn
) != 1)
1630 DeleteObject( cliprgn
);
1633 else CombineRgn( visrgn
, visrgn
, cliprgn
, RGN_AND
);
1635 /* only those pixels in the scroll rectangle that remain in the clipping
1636 * rect are scrolled. */
1640 GetClipBox( hdc
, &clip_rect
);
1641 src_rect
= clip_rect
;
1642 OffsetRect( &clip_rect
, -dx
, -dy
);
1643 IntersectRect( &src_rect
, &src_rect
, &clip_rect
);
1645 /* if an scroll rectangle is specified, only the pixels within that
1646 * rectangle are scrolled */
1647 if (scroll
) IntersectRect( &src_rect
, &src_rect
, scroll
);
1649 /* now convert to device coordinates */
1650 LPtoDP( hdc
, (LPPOINT
)&src_rect
, 2 );
1651 TRACE( "source rect: %s\n", wine_dbgstr_rect(&src_rect
) );
1652 /* also dx and dy */
1653 SetRect( &offset
, 0, 0, dx
, dy
);
1654 LPtoDP( hdc
, (LPPOINT
)&offset
, 2 );
1655 dxdev
= offset
.right
- offset
.left
;
1656 dydev
= offset
.bottom
- offset
.top
;
1658 /* now intersect with the visible region to get the pixels that will actually scroll */
1659 dstrgn
= CreateRectRgnIndirect( &src_rect
);
1660 CombineRgn( dstrgn
, dstrgn
, visrgn
, RGN_AND
);
1661 OffsetRgn( dstrgn
, dxdev
, dydev
);
1662 ExtSelectClipRgn( hdc
, dstrgn
, RGN_AND
);
1664 /* compute the update areas. This is the combined clip rectangle
1665 * minus the scrolled region, and intersected with the visible region. */
1666 if (ret_update_rgn
|| update_rect
)
1668 /* intersect clip and scroll rectangles, allowing NULL values */
1672 IntersectRect( &clip_rect
, clip
, scroll
);
1674 clip_rect
= *scroll
;
1679 GetClipBox( hdc
, &clip_rect
);
1681 /* Convert the combined clip rectangle to device coordinates */
1682 LPtoDP( hdc
, (LPPOINT
)&clip_rect
, 2 );
1684 SetRectRgn( update_rgn
, clip_rect
.left
, clip_rect
.top
, clip_rect
.right
, clip_rect
.bottom
);
1686 update_rgn
= CreateRectRgnIndirect( &clip_rect
);
1688 CombineRgn( update_rgn
, update_rgn
, visrgn
, RGN_AND
);
1689 CombineRgn( update_rgn
, update_rgn
, dstrgn
, RGN_DIFF
);
1692 ret
= USER_Driver
->pScrollDC( hdc
, dx
, dy
, update_rgn
);
1694 if (ret
&& update_rect
)
1696 GetRgnBox( update_rgn
, update_rect
);
1697 DPtoLP( hdc
, (LPPOINT
)update_rect
, 2 );
1698 TRACE( "returning update_rect %s\n", wine_dbgstr_rect(update_rect
) );
1700 if (!ret_update_rgn
) DeleteObject( update_rgn
);
1701 SelectClipRgn( hdc
, cliprgn
);
1702 if (cliprgn
) DeleteObject( cliprgn
);
1703 DeleteObject( visrgn
);
1704 DeleteObject( dstrgn
);
1708 /************************************************************************
1709 * PrintWindow (USER32.@)
1712 BOOL WINAPI
PrintWindow(HWND hwnd
, HDC hdcBlt
, UINT nFlags
)
1714 UINT flags
= PRF_CHILDREN
| PRF_ERASEBKGND
| PRF_OWNED
| PRF_CLIENT
;
1715 if(!(nFlags
& PW_CLIENTONLY
))
1717 flags
|= PRF_NONCLIENT
;
1719 SendMessageW(hwnd
, WM_PRINT
, (WPARAM
)hdcBlt
, flags
);