2 * Window painting functions
4 * Copyright 1993, 1994, 1995 Alexandre Julliard
13 #include "debugtools.h"
14 #include "wine/winuser16.h"
16 DECLARE_DEBUG_CHANNEL(nonclient
)
17 DECLARE_DEBUG_CHANNEL(win
)
19 /* client rect in window coordinates */
21 #define GETCLIENTRECTW( wnd, r ) (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
22 (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
23 (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
24 (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
26 /* Last CTLCOLOR id */
27 #define CTLCOLOR_MAX CTLCOLOR_STATIC
30 /***********************************************************************
31 * WIN_HaveToDelayNCPAINT
33 * Currently, in the Wine painting mechanism, the WM_NCPAINT message
34 * is generated as soon as a region intersecting the non-client area
35 * of a window is invalidated.
37 * This technique will work fine for all windows whose parents
38 * have the WS_CLIPCHILDREN style. When the parents have that style,
39 * they are not going to override the contents of their children.
40 * However, when the parent doesn't have that style, Windows relies
41 * on a "painter's algorithm" to display the contents of the windows.
42 * That is, windows are painted from back to front. This includes the
45 * This method looks at the current state of a window to determine
46 * if the sending of the WM_NCPAINT message should be delayed until
47 * the BeginPaint call.
50 * wndPtr - A Locked window pointer to the window we're
52 * uncFlags - This is the flag passed to the WIN_UpdateNCRgn
53 * function. This is a shortcut for the cases when
54 * we already know when to avoid scanning all the
55 * parents of a window. If you already know that this
56 * window's NCPAINT should be delayed, set the
57 * UNC_DELAY_NCPAINT flag for this parameter.
59 * This shortcut behavior is implemented in the
63 static BOOL
WIN_HaveToDelayNCPAINT(
67 WND
* parentWnd
= NULL
;
70 * Test the shortcut first. (duh)
72 if (uncFlags
& UNC_DELAY_NCPAINT
)
76 * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
77 * method only. This is another shortcut to avoid going
78 * up the parent's chain of the window to finally
79 * figure-out that none of them has an invalid region.
81 if (uncFlags
& UNC_IN_BEGINPAINT
)
85 * Scan all the parents of this window to find a window
86 * that doesn't have the WS_CLIPCHILDREN style and that
87 * has an invalid region.
89 parentWnd
= WIN_LockWndPtr(wndPtr
->parent
);
91 while (parentWnd
!=NULL
)
93 if ( ((parentWnd
->dwStyle
& WS_CLIPCHILDREN
) == 0) &&
94 (parentWnd
->hrgnUpdate
!= 0) )
96 WIN_ReleaseWndPtr(parentWnd
);
100 WIN_UpdateWndPtr(&parentWnd
, parentWnd
->parent
);
103 WIN_ReleaseWndPtr(parentWnd
);
108 /***********************************************************************
112 * Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
113 * Crop hrgnUpdate to a client rect, especially if it 1.
114 * If UNC_REGION is set return update region for the client rect.
116 * NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
117 * The trick is that when the returned region handle may be different from hRgn.
118 * In this case the old hRgn must be considered gone. BUT, if the returned value
119 * is 1 then the hRgn is preserved and RDW_Paint() will have to get
120 * a DC without extra clipping region.
122 HRGN
WIN_UpdateNCRgn(WND
* wnd
, HRGN hRgn
, UINT uncFlags
)
128 TRACE_(nonclient
)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
129 wnd
->hwndSelf
, wnd
->hrgnUpdate
, hRgn
, uncFlags
, wnd
->flags
& WIN_NEEDS_NCPAINT
);
131 /* desktop window doesn't have a nonclient area */
132 if(wnd
== WIN_GetDesktop())
134 wnd
->flags
&= ~WIN_NEEDS_NCPAINT
;
135 if( wnd
->hrgnUpdate
> 1 )
136 hrgnRet
= REGION_CropRgn( hRgn
, wnd
->hrgnUpdate
, NULL
, NULL
);
139 hrgnRet
= wnd
->hrgnUpdate
;
141 WIN_ReleaseDesktop();
144 WIN_ReleaseDesktop();
146 if ((wnd
->hwndSelf
== GetForegroundWindow()) &&
147 !(wnd
->flags
& WIN_NCACTIVATED
) )
149 wnd
->flags
|= WIN_NCACTIVATED
;
150 uncFlags
|= UNC_ENTIRE
;
154 * If the window's non-client area needs to be painted,
156 if ( ( wnd
->flags
& WIN_NEEDS_NCPAINT
) &&
157 !WIN_HaveToDelayNCPAINT(wnd
, uncFlags
) )
161 wnd
->flags
&= ~WIN_NEEDS_NCPAINT
;
162 GETCLIENTRECTW( wnd
, r
);
164 TRACE_(nonclient
)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
165 r
.left
, r
.top
, r
.right
, r
.bottom
, wnd
->hrgnUpdate
);
166 if( wnd
->hrgnUpdate
> 1 )
168 /* Check if update rgn overlaps with nonclient area */
170 GetRgnBox( wnd
->hrgnUpdate
, &r2
);
171 UnionRect( &r3
, &r2
, &r
);
172 if( r3
.left
!= r
.left
|| r3
.top
!= r
.top
||
173 r3
.right
!= r
.right
|| r3
.bottom
!= r
.bottom
) /* it does */
175 /* crop hrgnUpdate, save old one in hClip - the only
176 * case that places a valid region handle in hClip */
178 hClip
= wnd
->hrgnUpdate
;
179 wnd
->hrgnUpdate
= REGION_CropRgn( hRgn
, hClip
, &r
, NULL
);
180 if( uncFlags
& UNC_REGION
) hrgnRet
= hClip
;
183 if( uncFlags
& UNC_CHECK
)
185 GetRgnBox( wnd
->hrgnUpdate
, &r3
);
186 if( IsRectEmpty( &r3
) )
188 /* delete the update region since all invalid
189 * parts were in the nonclient area */
191 DeleteObject( wnd
->hrgnUpdate
);
193 if(!(wnd
->flags
& WIN_INTERNAL_PAINT
))
194 QUEUE_DecPaintCount( wnd
->hmemTaskQ
);
196 wnd
->flags
&= ~WIN_NEEDS_ERASEBKGND
;
200 if(!hClip
&& wnd
->hrgnUpdate
) goto copyrgn
;
203 if( wnd
->hrgnUpdate
== 1 )/* entire window */
205 if( uncFlags
& UNC_UPDATE
) wnd
->hrgnUpdate
= CreateRectRgnIndirect( &r
);
206 if( uncFlags
& UNC_REGION
) hrgnRet
= 1;
207 uncFlags
|= UNC_ENTIRE
;
210 else /* no WM_NCPAINT unless forced */
212 if( wnd
->hrgnUpdate
> 1 )
215 if( uncFlags
& UNC_REGION
)
216 hrgnRet
= REGION_CropRgn( hRgn
, wnd
->hrgnUpdate
, NULL
, NULL
);
219 if( wnd
->hrgnUpdate
== 1 && (uncFlags
& UNC_UPDATE
) )
221 GETCLIENTRECTW( wnd
, r
);
222 wnd
->hrgnUpdate
= CreateRectRgnIndirect( &r
);
223 if( uncFlags
& UNC_REGION
) hrgnRet
= 1;
227 if(!hClip
&& (uncFlags
& UNC_ENTIRE
) )
229 /* still don't do anything if there is no nonclient area */
230 hClip
= (memcmp( &wnd
->rectWindow
, &wnd
->rectClient
, sizeof(RECT
) ) != 0);
233 if( hClip
) /* NOTE: WM_NCPAINT allows wParam to be 1 */
235 if ( hClip
== hrgnRet
&& hrgnRet
> 1 ) {
236 hClip
= CreateRectRgn( 0, 0, 0, 0 );
237 CombineRgn( hClip
, hrgnRet
, 0, RGN_COPY
);
240 SendMessageA( wnd
->hwndSelf
, WM_NCPAINT
, hClip
, 0L );
241 if( (hClip
> 1) && (hClip
!= hRgn
) && (hClip
!= hrgnRet
) )
242 DeleteObject( hClip
);
244 * Since all Window locks are suspended while processing the WM_NCPAINT
245 * we want to make sure the window still exists before continuing.
247 if (!IsWindow(wnd
->hwndSelf
))
249 DeleteObject(hrgnRet
);
254 TRACE_(nonclient
)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet
, hClip
, wnd
->hrgnUpdate
);
260 /***********************************************************************
261 * BeginPaint16 (USER.39)
263 HDC16 WINAPI
BeginPaint16( HWND16 hwnd
, LPPAINTSTRUCT16 lps
)
267 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
268 if (!wndPtr
) return 0;
270 bIcon
= (wndPtr
->dwStyle
& WS_MINIMIZE
&& GetClassWord(wndPtr
->hwndSelf
, GCW_HICON
));
272 wndPtr
->flags
&= ~WIN_NEEDS_BEGINPAINT
;
274 /* send WM_NCPAINT and make sure hrgnUpdate is a valid rgn handle */
275 WIN_UpdateNCRgn( wndPtr
, 0, UNC_UPDATE
| UNC_IN_BEGINPAINT
);
278 * Make sure the window is still a window. All window locks are suspended
279 * when the WM_NCPAINT is sent.
281 if (!IsWindow(wndPtr
->hwndSelf
))
283 WIN_ReleaseWndPtr(wndPtr
);
287 if( ((hrgnUpdate
= wndPtr
->hrgnUpdate
) != 0) || (wndPtr
->flags
& WIN_INTERNAL_PAINT
))
288 QUEUE_DecPaintCount( wndPtr
->hmemTaskQ
);
290 wndPtr
->hrgnUpdate
= 0;
291 wndPtr
->flags
&= ~WIN_INTERNAL_PAINT
;
295 TRACE_(win
)("hrgnUpdate = %04x, \n", hrgnUpdate
);
297 if (GetClassWord16(wndPtr
->hwndSelf
, GCW_STYLE
) & CS_PARENTDC
)
299 /* Don't clip the output to the update region for CS_PARENTDC window */
301 DeleteObject(hrgnUpdate
);
302 lps
->hdc
= GetDCEx16( hwnd
, 0, DCX_WINDOWPAINT
| DCX_USESTYLE
|
303 (bIcon
? DCX_WINDOW
: 0) );
307 if( hrgnUpdate
) /* convert to client coordinates */
308 OffsetRgn( hrgnUpdate
, wndPtr
->rectWindow
.left
- wndPtr
->rectClient
.left
,
309 wndPtr
->rectWindow
.top
- wndPtr
->rectClient
.top
);
310 lps
->hdc
= GetDCEx16(hwnd
, hrgnUpdate
, DCX_INTERSECTRGN
|
311 DCX_WINDOWPAINT
| DCX_USESTYLE
| (bIcon
? DCX_WINDOW
: 0) );
312 /* ReleaseDC() in EndPaint() will delete the region */
315 TRACE_(win
)("hdc = %04x\n", lps
->hdc
);
319 WARN_(win
)("GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd
);
320 WIN_ReleaseWndPtr(wndPtr
);
324 GetClipBox16( lps
->hdc
, &lps
->rcPaint
);
326 TRACE_(win
)("box = (%i,%i - %i,%i)\n", lps
->rcPaint
.left
, lps
->rcPaint
.top
,
327 lps
->rcPaint
.right
, lps
->rcPaint
.bottom
);
329 if (wndPtr
->flags
& WIN_NEEDS_ERASEBKGND
)
331 wndPtr
->flags
&= ~WIN_NEEDS_ERASEBKGND
;
332 lps
->fErase
= !SendMessage16(hwnd
, (bIcon
) ? WM_ICONERASEBKGND
334 (WPARAM16
)lps
->hdc
, 0 );
336 else lps
->fErase
= TRUE
;
338 WIN_ReleaseWndPtr(wndPtr
);
343 /***********************************************************************
344 * BeginPaint32 (USER32.10)
346 HDC WINAPI
BeginPaint( HWND hwnd
, PAINTSTRUCT
*lps
)
350 BeginPaint16( hwnd
, &ps
);
351 lps
->hdc
= (HDC
)ps
.hdc
;
352 lps
->fErase
= ps
.fErase
;
353 lps
->rcPaint
.top
= ps
.rcPaint
.top
;
354 lps
->rcPaint
.left
= ps
.rcPaint
.left
;
355 lps
->rcPaint
.right
= ps
.rcPaint
.right
;
356 lps
->rcPaint
.bottom
= ps
.rcPaint
.bottom
;
357 lps
->fRestore
= ps
.fRestore
;
358 lps
->fIncUpdate
= ps
.fIncUpdate
;
363 /***********************************************************************
364 * EndPaint16 (USER.40)
366 BOOL16 WINAPI
EndPaint16( HWND16 hwnd
, const PAINTSTRUCT16
* lps
)
368 ReleaseDC16( hwnd
, lps
->hdc
);
374 /***********************************************************************
375 * EndPaint32 (USER32.176)
377 BOOL WINAPI
EndPaint( HWND hwnd
, const PAINTSTRUCT
*lps
)
379 ReleaseDC( hwnd
, lps
->hdc
);
385 /***********************************************************************
386 * FillWindow (USER.324)
388 void WINAPI
FillWindow16( HWND16 hwndParent
, HWND16 hwnd
, HDC16 hdc
, HBRUSH16 hbrush
)
391 GetClientRect16( hwnd
, &rect
);
392 DPtoLP16( hdc
, (LPPOINT16
)&rect
, 2 );
393 PaintRect16( hwndParent
, hwnd
, hdc
, hbrush
, &rect
);
397 /***********************************************************************
398 * PAINT_GetControlBrush
400 static HBRUSH16
PAINT_GetControlBrush( HWND hParent
, HWND hWnd
, HDC16 hDC
, UINT16 ctlType
)
402 HBRUSH16 bkgBrush
= (HBRUSH16
)SendMessageA( hParent
, WM_CTLCOLORMSGBOX
+ ctlType
,
403 (WPARAM
)hDC
, (LPARAM
)hWnd
);
404 if( !IsGDIObject16(bkgBrush
) )
405 bkgBrush
= DEFWND_ControlColor( hDC
, ctlType
);
410 /***********************************************************************
411 * PaintRect (USER.325)
413 void WINAPI
PaintRect16( HWND16 hwndParent
, HWND16 hwnd
, HDC16 hdc
,
414 HBRUSH16 hbrush
, const RECT16
*rect
)
416 if( hbrush
<= CTLCOLOR_MAX
)
419 hbrush
= PAINT_GetControlBrush( hwndParent
, hwnd
, hdc
, (UINT16
)hbrush
);
424 FillRect16( hdc
, rect
, hbrush
);
428 /***********************************************************************
429 * GetControlBrush (USER.326)
431 HBRUSH16 WINAPI
GetControlBrush16( HWND16 hwnd
, HDC16 hdc
, UINT16 ctlType
)
433 WND
* wndPtr
= WIN_FindWndPtr( hwnd
);
436 if((ctlType
<= CTLCOLOR_MAX
) && wndPtr
)
439 if( wndPtr
->dwStyle
& WS_POPUP
) parent
= WIN_LockWndPtr(wndPtr
->owner
);
440 else parent
= WIN_LockWndPtr(wndPtr
->parent
);
441 if( !parent
) parent
= wndPtr
;
442 retvalue
= (HBRUSH16
)PAINT_GetControlBrush( parent
->hwndSelf
, hwnd
, hdc
, ctlType
);
443 WIN_ReleaseWndPtr(parent
);
446 retvalue
= (HBRUSH16
)0;
448 WIN_ReleaseWndPtr(wndPtr
);
453 /***********************************************************************
454 * RDW_ValidateParent [RDW_UpdateRgns() helper]
456 * Validate the portions of parent that are covered by a validated child
459 void RDW_ValidateParent(WND
*wndChild
)
461 WND
*wndParent
= WIN_LockWndPtr(wndChild
->parent
);
462 WND
*wndDesktop
= WIN_GetDesktop();
464 if ((wndParent
) && (wndParent
!= wndDesktop
) && !(wndParent
->dwStyle
& WS_CLIPCHILDREN
))
467 if (wndChild
->hrgnUpdate
== 1 )
469 RECT r
= {0, 0, wndChild
->rectWindow
.right
- wndChild
->rectWindow
.left
,
470 wndChild
->rectWindow
.bottom
- wndChild
->rectWindow
.top
};
471 hrg
= CreateRectRgnIndirect( &r
);
474 hrg
= wndChild
->hrgnUpdate
;
475 if (wndParent
->hrgnUpdate
!= 0)
478 RECT rect
, rectParent
;
479 if( wndParent
->hrgnUpdate
== 1 )
481 RECT r
= {0, 0, wndParent
->rectWindow
.right
- wndParent
->rectWindow
.left
,
482 wndParent
->rectWindow
.bottom
- wndParent
->rectWindow
.top
};
483 wndParent
->hrgnUpdate
= CreateRectRgnIndirect( &r
);
485 /* we must offset the child region by the offset of the child rect in the parent */
486 GetWindowRect(wndParent
->hwndSelf
, &rectParent
);
487 GetWindowRect(wndChild
->hwndSelf
, &rect
);
488 ptOffset
.x
= rect
.left
- rectParent
.left
;
489 ptOffset
.y
= rect
.top
- rectParent
.top
;
490 OffsetRgn( hrg
, ptOffset
.x
, ptOffset
.y
);
491 CombineRgn( wndParent
->hrgnUpdate
, wndParent
->hrgnUpdate
, hrg
, RGN_DIFF
);
492 OffsetRgn( hrg
, -ptOffset
.x
, -ptOffset
.y
);
494 if (hrg
!= wndChild
->hrgnUpdate
) DeleteObject( hrg
);
496 WIN_ReleaseWndPtr(wndParent
);
497 WIN_ReleaseDesktop();
500 /***********************************************************************
501 * RDW_UpdateRgns [RedrawWindow() helper]
503 * Walks the window tree and adds/removes parts of the hRgn to/from update
504 * regions of windows that overlap it. Also, manages internal paint flags.
506 * NOTE: Walks the window tree so the caller must lock it.
507 * MUST preserve hRgn (can modify but then has to restore).
509 static void RDW_UpdateRgns( WND
* wndPtr
, HRGN hRgn
, UINT flags
, BOOL firstRecursLevel
)
512 * Called only when one of the following is set:
513 * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
516 BOOL bHadOne
= wndPtr
->hrgnUpdate
&& hRgn
;
517 BOOL bChildren
= ( wndPtr
->child
&& !(flags
& RDW_NOCHILDREN
) && !(wndPtr
->dwStyle
& WS_MINIMIZE
)
518 && ((flags
& RDW_ALLCHILDREN
) || !(wndPtr
->dwStyle
& WS_CLIPCHILDREN
)) );
523 r
.right
= wndPtr
->rectWindow
.right
- wndPtr
->rectWindow
.left
;
524 r
.bottom
= wndPtr
->rectWindow
.bottom
- wndPtr
->rectWindow
.top
;
526 TRACE_(win
)("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr
->hwndSelf
, wndPtr
->hrgnUpdate
, hRgn
, flags
);
528 if( flags
& RDW_INVALIDATE
)
532 switch( wndPtr
->hrgnUpdate
)
535 CombineRgn( wndPtr
->hrgnUpdate
, wndPtr
->hrgnUpdate
, hRgn
, RGN_OR
);
538 wndPtr
->hrgnUpdate
= REGION_CropRgn( wndPtr
->hrgnUpdate
,
539 wndPtr
->hrgnUpdate
? wndPtr
->hrgnUpdate
: hRgn
,
543 GetRgnBox( wndPtr
->hrgnUpdate
, &r
);
544 if( IsRectEmpty( &r
) )
546 DeleteObject( wndPtr
->hrgnUpdate
);
547 wndPtr
->hrgnUpdate
= 0;
552 case 1: /* already an entire window */
558 if( wndPtr
->hrgnUpdate
> 1 )
559 DeleteObject( wndPtr
->hrgnUpdate
);
560 wndPtr
->hrgnUpdate
= 1;
563 hRgn
= wndPtr
->hrgnUpdate
; /* this is a trick that depends on code in PAINT_RedrawWindow() */
565 if( !bHadOne
&& !(wndPtr
->flags
& WIN_INTERNAL_PAINT
) )
566 QUEUE_IncPaintCount( wndPtr
->hmemTaskQ
);
568 if (flags
& RDW_FRAME
) wndPtr
->flags
|= WIN_NEEDS_NCPAINT
;
569 if (flags
& RDW_ERASE
) wndPtr
->flags
|= WIN_NEEDS_ERASEBKGND
;
572 else if( flags
& RDW_VALIDATE
)
574 if( wndPtr
->hrgnUpdate
)
578 if( wndPtr
->hrgnUpdate
== 1 )
579 wndPtr
->hrgnUpdate
= CreateRectRgnIndirect( &r
);
581 if( CombineRgn( wndPtr
->hrgnUpdate
, wndPtr
->hrgnUpdate
, hRgn
, RGN_DIFF
)
585 else /* validate everything */
587 if( wndPtr
->hrgnUpdate
> 1 )
590 DeleteObject( wndPtr
->hrgnUpdate
);
592 wndPtr
->hrgnUpdate
= 0;
595 if( !wndPtr
->hrgnUpdate
)
597 wndPtr
->flags
&= ~WIN_NEEDS_ERASEBKGND
;
598 if( !(wndPtr
->flags
& WIN_INTERNAL_PAINT
) )
599 QUEUE_DecPaintCount( wndPtr
->hmemTaskQ
);
603 if (flags
& RDW_NOFRAME
) wndPtr
->flags
&= ~WIN_NEEDS_NCPAINT
;
604 if (flags
& RDW_NOERASE
) wndPtr
->flags
&= ~WIN_NEEDS_ERASEBKGND
;
608 if ((firstRecursLevel
) && (wndPtr
->hrgnUpdate
!= 0) && (flags
& RDW_UPDATENOW
))
609 RDW_ValidateParent(wndPtr
); /* validate parent covered by region */
611 /* in/validate child windows that intersect with the region if it
612 * is a valid handle. */
614 if( flags
& (RDW_INVALIDATE
| RDW_VALIDATE
) )
616 if( hRgn
> 1 && bChildren
)
618 WND
* wnd
= wndPtr
->child
;
619 POINT ptTotal
, prevOrigin
= {0,0};
622 ptClient
.x
= wndPtr
->rectClient
.left
- wndPtr
->rectWindow
.left
;
623 ptClient
.y
= wndPtr
->rectClient
.top
- wndPtr
->rectWindow
.top
;
625 for( ptTotal
.x
= ptTotal
.y
= 0; wnd
; wnd
= wnd
->next
)
627 if( wnd
->dwStyle
& WS_VISIBLE
)
631 r
.left
= wnd
->rectWindow
.left
+ ptClient
.x
;
632 r
.right
= wnd
->rectWindow
.right
+ ptClient
.x
;
633 r
.top
= wnd
->rectWindow
.top
+ ptClient
.y
;
634 r
.bottom
= wnd
->rectWindow
.bottom
+ ptClient
.y
;
636 ptOffset
.x
= r
.left
- prevOrigin
.x
;
637 ptOffset
.y
= r
.top
- prevOrigin
.y
;
638 OffsetRect( &r
, -ptTotal
.x
, -ptTotal
.y
);
640 if( RectInRegion( hRgn
, &r
) )
642 OffsetRgn( hRgn
, -ptOffset
.x
, -ptOffset
.y
);
643 RDW_UpdateRgns( wnd
, hRgn
, flags
, FALSE
);
644 prevOrigin
.x
= r
.left
+ ptTotal
.x
;
645 prevOrigin
.y
= r
.top
+ ptTotal
.y
;
646 ptTotal
.x
+= ptOffset
.x
;
647 ptTotal
.y
+= ptOffset
.y
;
651 OffsetRgn( hRgn
, ptTotal
.x
, ptTotal
.y
);
656 /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
661 for( wnd
= wndPtr
->child
; wnd
; wnd
= wnd
->next
)
662 if( wnd
->dwStyle
& WS_VISIBLE
)
663 RDW_UpdateRgns( wnd
, hRgn
, flags
, FALSE
);
668 /* Set/clear internal paint flag */
670 if (flags
& RDW_INTERNALPAINT
)
672 if ( !wndPtr
->hrgnUpdate
&& !(wndPtr
->flags
& WIN_INTERNAL_PAINT
))
673 QUEUE_IncPaintCount( wndPtr
->hmemTaskQ
);
674 wndPtr
->flags
|= WIN_INTERNAL_PAINT
;
676 else if (flags
& RDW_NOINTERNALPAINT
)
678 if ( !wndPtr
->hrgnUpdate
&& (wndPtr
->flags
& WIN_INTERNAL_PAINT
))
679 QUEUE_DecPaintCount( wndPtr
->hmemTaskQ
);
680 wndPtr
->flags
&= ~WIN_INTERNAL_PAINT
;
684 /***********************************************************************
685 * RDW_Paint [RedrawWindow() helper]
687 * Walks the window tree and paints/erases windows that have
688 * nonzero update regions according to redraw flags. hrgn is a scratch
689 * region passed down during recursion. Must not be 1.
692 static HRGN
RDW_Paint( WND
* wndPtr
, HRGN hrgn
, UINT flags
, UINT ex
)
694 /* NOTE: wndPtr is locked by caller.
696 * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
697 * SendMessage() calls. This is a comment inside DefWindowProc() source
700 * This message avoids lots of inter-app message traffic
701 * by switching to the other task and continuing the
705 * LOWORD(lParam) = hrgnClip
706 * HIWORD(lParam) = hwndSkip (not used; always NULL)
710 HWND hWnd
= wndPtr
->hwndSelf
;
711 BOOL bIcon
= ((wndPtr
->dwStyle
& WS_MINIMIZE
) && GetClassWord(wndPtr
->hwndSelf
, GCW_HICON
));
713 /* Erase/update the window itself ... */
715 TRACE_(win
)("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd
, wndPtr
->hrgnUpdate
, hrgn
, flags
);
718 * Check if this window should delay it's processing of WM_NCPAINT.
719 * See WIN_HaveToDelayNCPAINT for a description of the mechanism
721 if ((ex
& RDW_EX_DELAY_NCPAINT
) || WIN_HaveToDelayNCPAINT(wndPtr
, 0) )
722 ex
|= RDW_EX_DELAY_NCPAINT
;
724 if (flags
& RDW_UPDATENOW
)
726 if (wndPtr
->hrgnUpdate
) /* wm_painticon wparam is 1 */
727 SendMessage16( hWnd
, (bIcon
) ? WM_PAINTICON
: WM_PAINT
, bIcon
, 0 );
729 else if ((flags
& RDW_ERASENOW
) || (ex
& RDW_EX_TOPFRAME
))
731 UINT dcx
= DCX_INTERSECTRGN
| DCX_USESTYLE
| DCX_KEEPCLIPRGN
| DCX_WINDOWPAINT
| DCX_CACHE
;
734 hrgnRet
= WIN_UpdateNCRgn(wndPtr
,
736 UNC_REGION
| UNC_CHECK
|
737 ((ex
& RDW_EX_TOPFRAME
) ? UNC_ENTIRE
: 0) |
738 ((ex
& RDW_EX_DELAY_NCPAINT
) ? UNC_DELAY_NCPAINT
: 0) );
742 if( hrgnRet
> 1 ) hrgn
= hrgnRet
; else hrgnRet
= 0; /* entire client */
743 if( wndPtr
->flags
& WIN_NEEDS_ERASEBKGND
)
745 if( bIcon
) dcx
|= DCX_WINDOW
;
748 OffsetRgn( hrgnRet
, wndPtr
->rectWindow
.left
- wndPtr
->rectClient
.left
,
749 wndPtr
->rectWindow
.top
- wndPtr
->rectClient
.top
);
751 dcx
&= ~DCX_INTERSECTRGN
;
752 if (( hDC
= GetDCEx( hWnd
, hrgnRet
, dcx
)) )
754 if (SendMessage16( hWnd
, (bIcon
) ? WM_ICONERASEBKGND
755 : WM_ERASEBKGND
, (WPARAM16
)hDC
, 0 ))
756 wndPtr
->flags
&= ~WIN_NEEDS_ERASEBKGND
;
757 ReleaseDC( hWnd
, hDC
);
763 if( !IsWindow(hWnd
) ) return hrgn
;
764 ex
&= ~RDW_EX_TOPFRAME
;
766 /* ... and its child windows */
768 if( wndPtr
->child
&& !(flags
& RDW_NOCHILDREN
) && !(wndPtr
->dwStyle
& WS_MINIMIZE
)
769 && ((flags
& RDW_ALLCHILDREN
) || !(wndPtr
->dwStyle
& WS_CLIPCHILDREN
)) )
773 if( (list
= WIN_BuildWinArray( wndPtr
, 0, NULL
)) )
776 for (ppWnd
= list
; *ppWnd
; ppWnd
++)
778 WIN_UpdateWndPtr(&wndPtr
,*ppWnd
);
779 if (!IsWindow(wndPtr
->hwndSelf
)) continue;
780 if ( (wndPtr
->dwStyle
& WS_VISIBLE
) &&
781 (wndPtr
->hrgnUpdate
|| (wndPtr
->flags
& WIN_INTERNAL_PAINT
)) )
782 hrgn
= RDW_Paint( wndPtr
, hrgn
, flags
, ex
);
784 WIN_ReleaseWndPtr(wndPtr
);
785 WIN_ReleaseWinArray(list
);
792 /***********************************************************************
796 BOOL
PAINT_RedrawWindow( HWND hwnd
, const RECT
*rectUpdate
,
797 HRGN hrgnUpdate
, UINT flags
, UINT ex
)
804 if (!hwnd
) hwnd
= GetDesktopWindow();
805 if (!(wndPtr
= WIN_FindWndPtr( hwnd
))) return FALSE
;
807 /* check if the window or its parents are visible/not minimized */
809 if (!WIN_IsWindowDrawable( wndPtr
, !(flags
& RDW_FRAME
) ) )
811 WIN_ReleaseWndPtr(wndPtr
);
819 GetRgnBox( hrgnUpdate
, &r
);
820 TRACE_(win
)( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x, exflags=%04x\n",
821 hwnd
, wndPtr
->hrgnUpdate
, hrgnUpdate
, r
.left
, r
.top
, r
.right
, r
.bottom
, flags
, ex
);
829 TRACE_(win
)( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x, exflags=%04x\n",
830 hwnd
, wndPtr
->hrgnUpdate
, rectUpdate
? "rect" : "NULL", r
.left
,
831 r
.top
, r
.right
, r
.bottom
, hrgnUpdate
, flags
, ex
);
835 /* prepare an update region in window coordinates */
837 if( flags
& RDW_FRAME
)
838 r
= wndPtr
->rectWindow
;
840 r
= wndPtr
->rectClient
;
842 if( ex
& RDW_EX_XYWINDOW
)
845 OffsetRect( &r
, -wndPtr
->rectWindow
.left
, -wndPtr
->rectWindow
.top
);
849 pt
.x
= wndPtr
->rectClient
.left
- wndPtr
->rectWindow
.left
;
850 pt
.y
= wndPtr
->rectClient
.top
- wndPtr
->rectWindow
.top
;
851 OffsetRect( &r
, -wndPtr
->rectClient
.left
, -wndPtr
->rectClient
.top
);
854 if (flags
& RDW_INVALIDATE
) /* ------------------------- Invalidate */
856 /* If the window doesn't have hrgnUpdate we leave hRgn zero
857 * and put a new region straight into wndPtr->hrgnUpdate
858 * so that RDW_UpdateRgns() won't have to do any extra work.
863 if( wndPtr
->hrgnUpdate
)
864 hRgn
= REGION_CropRgn( 0, hrgnUpdate
, NULL
, &pt
);
866 wndPtr
->hrgnUpdate
= REGION_CropRgn( 0, hrgnUpdate
, &r
, &pt
);
868 else if( rectUpdate
)
870 if( !IntersectRect( &r2
, &r
, rectUpdate
) ) goto END
;
871 OffsetRect( &r2
, pt
.x
, pt
.y
);
874 if( wndPtr
->hrgnUpdate
== 0 )
875 wndPtr
->hrgnUpdate
= CreateRectRgnIndirect( &r2
);
877 hRgn
= CreateRectRgnIndirect( &r2
);
879 else /* entire window or client depending on RDW_FRAME */
881 if( flags
& RDW_FRAME
)
883 if( wndPtr
->hrgnUpdate
)
884 DeleteObject( wndPtr
->hrgnUpdate
);
885 wndPtr
->hrgnUpdate
= 1;
889 GETCLIENTRECTW( wndPtr
, r2
);
894 else if (flags
& RDW_VALIDATE
) /* ------------------------- Validate */
896 /* In this we cannot leave with zero hRgn */
899 hRgn
= REGION_CropRgn( hRgn
, hrgnUpdate
, &r
, &pt
);
900 GetRgnBox( hRgn
, &r2
);
901 if( IsRectEmpty( &r2
) ) goto END
;
903 else if( rectUpdate
)
905 if( !IntersectRect( &r2
, &r
, rectUpdate
) ) goto END
;
906 OffsetRect( &r2
, pt
.x
, pt
.y
);
908 hRgn
= CreateRectRgnIndirect( &r2
);
910 else /* entire window or client depending on RDW_FRAME */
912 if( flags
& RDW_FRAME
)
916 GETCLIENTRECTW( wndPtr
, r2
);
922 /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
924 RDW_UpdateRgns( wndPtr
, hRgn
, flags
, TRUE
);
926 /* Erase/update windows, from now on hRgn is a scratch region */
928 hRgn
= RDW_Paint( wndPtr
, (hRgn
== 1) ? 0 : hRgn
, flags
, ex
);
931 if( hRgn
> 1 && (hRgn
!= hrgnUpdate
) )
933 WIN_ReleaseWndPtr(wndPtr
);
938 /***********************************************************************
939 * RedrawWindow32 (USER32.426)
941 BOOL WINAPI
RedrawWindow( HWND hwnd
, const RECT
*rectUpdate
,
942 HRGN hrgnUpdate
, UINT flags
)
944 return PAINT_RedrawWindow( hwnd
, rectUpdate
, hrgnUpdate
, flags
, 0 );
948 /***********************************************************************
949 * RedrawWindow16 (USER.290)
951 BOOL16 WINAPI
RedrawWindow16( HWND16 hwnd
, const RECT16
*rectUpdate
,
952 HRGN16 hrgnUpdate
, UINT16 flags
)
957 CONV_RECT16TO32( rectUpdate
, &r
);
958 return (BOOL16
)RedrawWindow( (HWND
)hwnd
, &r
, hrgnUpdate
, flags
);
960 return (BOOL16
)PAINT_RedrawWindow( (HWND
)hwnd
, NULL
,
961 (HRGN
)hrgnUpdate
, flags
, 0 );
965 /***********************************************************************
966 * UpdateWindow16 (USER.124)
968 void WINAPI
UpdateWindow16( HWND16 hwnd
)
970 PAINT_RedrawWindow( hwnd
, NULL
, 0, RDW_UPDATENOW
| RDW_NOCHILDREN
, 0 );
973 /***********************************************************************
974 * UpdateWindow32 (USER32.567)
976 void WINAPI
UpdateWindow( HWND hwnd
)
978 PAINT_RedrawWindow( hwnd
, NULL
, 0, RDW_UPDATENOW
| RDW_NOCHILDREN
, 0 );
981 /***********************************************************************
982 * InvalidateRgn16 (USER.126)
984 void WINAPI
InvalidateRgn16( HWND16 hwnd
, HRGN16 hrgn
, BOOL16 erase
)
986 PAINT_RedrawWindow((HWND
)hwnd
, NULL
, (HRGN
)hrgn
,
987 RDW_INVALIDATE
| (erase
? RDW_ERASE
: 0), 0 );
991 /***********************************************************************
992 * InvalidateRgn32 (USER32.329)
994 BOOL WINAPI
InvalidateRgn( HWND hwnd
, HRGN hrgn
, BOOL erase
)
996 return PAINT_RedrawWindow(hwnd
, NULL
, hrgn
, RDW_INVALIDATE
| (erase
? RDW_ERASE
: 0), 0 );
1000 /***********************************************************************
1001 * InvalidateRect16 (USER.125)
1003 void WINAPI
InvalidateRect16( HWND16 hwnd
, const RECT16
*rect
, BOOL16 erase
)
1005 RedrawWindow16( hwnd
, rect
, 0, RDW_INVALIDATE
| (erase
? RDW_ERASE
: 0) );
1009 /***********************************************************************
1010 * InvalidateRect32 (USER32.328)
1012 BOOL WINAPI
InvalidateRect( HWND hwnd
, const RECT
*rect
, BOOL erase
)
1014 return PAINT_RedrawWindow( hwnd
, rect
, 0,
1015 RDW_INVALIDATE
| (erase
? RDW_ERASE
: 0), 0 );
1019 /***********************************************************************
1020 * ValidateRgn16 (USER.128)
1022 void WINAPI
ValidateRgn16( HWND16 hwnd
, HRGN16 hrgn
)
1024 PAINT_RedrawWindow( (HWND
)hwnd
, NULL
, (HRGN
)hrgn
,
1025 RDW_VALIDATE
| RDW_NOCHILDREN
, 0 );
1029 /***********************************************************************
1030 * ValidateRgn32 (USER32.572)
1032 void WINAPI
ValidateRgn( HWND hwnd
, HRGN hrgn
)
1034 PAINT_RedrawWindow( hwnd
, NULL
, hrgn
, RDW_VALIDATE
| RDW_NOCHILDREN
, 0 );
1038 /***********************************************************************
1039 * ValidateRect16 (USER.127)
1041 void WINAPI
ValidateRect16( HWND16 hwnd
, const RECT16
*rect
)
1043 RedrawWindow16( hwnd
, rect
, 0, RDW_VALIDATE
| RDW_NOCHILDREN
);
1047 /***********************************************************************
1048 * ValidateRect32 (USER32.571)
1050 void WINAPI
ValidateRect( HWND hwnd
, const RECT
*rect
)
1052 PAINT_RedrawWindow( hwnd
, rect
, 0, RDW_VALIDATE
| RDW_NOCHILDREN
, 0 );
1056 /***********************************************************************
1057 * GetUpdateRect16 (USER.190)
1059 BOOL16 WINAPI
GetUpdateRect16( HWND16 hwnd
, LPRECT16 rect
, BOOL16 erase
)
1064 if (!rect
) return GetUpdateRect( hwnd
, NULL
, erase
);
1065 ret
= GetUpdateRect( hwnd
, &r
, erase
);
1066 CONV_RECT32TO16( &r
, rect
);
1071 /***********************************************************************
1072 * GetUpdateRect32 (USER32.297)
1074 BOOL WINAPI
GetUpdateRect( HWND hwnd
, LPRECT rect
, BOOL erase
)
1077 WND
* wndPtr
= WIN_FindWndPtr( hwnd
);
1078 if (!wndPtr
) return FALSE
;
1082 if (wndPtr
->hrgnUpdate
> 1)
1084 HRGN hrgn
= CreateRectRgn( 0, 0, 0, 0 );
1085 if (GetUpdateRgn( hwnd
, hrgn
, erase
) == ERROR
)
1090 GetRgnBox( hrgn
, rect
);
1091 DeleteObject( hrgn
);
1092 if (GetClassLongA(wndPtr
->hwndSelf
, GCL_STYLE
) & CS_OWNDC
)
1094 if (GetMapMode(wndPtr
->dce
->hDC
) != MM_TEXT
)
1096 DPtoLP (wndPtr
->dce
->hDC
, (LPPOINT
)rect
, 2);
1101 if( wndPtr
->hrgnUpdate
== 1 )
1103 GetClientRect( hwnd
, rect
);
1104 if (erase
) RedrawWindow( hwnd
, NULL
, 0, RDW_FRAME
| RDW_ERASENOW
| RDW_NOCHILDREN
);
1107 SetRectEmpty( rect
);
1109 retvalue
= (wndPtr
->hrgnUpdate
>= 1);
1111 WIN_ReleaseWndPtr(wndPtr
);
1116 /***********************************************************************
1117 * GetUpdateRgn16 (USER.237)
1119 INT16 WINAPI
GetUpdateRgn16( HWND16 hwnd
, HRGN16 hrgn
, BOOL16 erase
)
1121 return GetUpdateRgn( hwnd
, hrgn
, erase
);
1125 /***********************************************************************
1126 * GetUpdateRgn (USER32.298)
1128 INT WINAPI
GetUpdateRgn( HWND hwnd
, HRGN hrgn
, BOOL erase
)
1131 WND
* wndPtr
= WIN_FindWndPtr( hwnd
);
1132 if (!wndPtr
) return ERROR
;
1134 if (wndPtr
->hrgnUpdate
== 0)
1136 SetRectRgn( hrgn
, 0, 0, 0, 0 );
1137 retval
= NULLREGION
;
1141 if (wndPtr
->hrgnUpdate
== 1)
1143 SetRectRgn( hrgn
, 0, 0, wndPtr
->rectClient
.right
- wndPtr
->rectClient
.left
,
1144 wndPtr
->rectClient
.bottom
- wndPtr
->rectClient
.top
);
1145 retval
= SIMPLEREGION
;
1149 retval
= CombineRgn( hrgn
, wndPtr
->hrgnUpdate
, 0, RGN_COPY
);
1150 OffsetRgn( hrgn
, wndPtr
->rectWindow
.left
- wndPtr
->rectClient
.left
,
1151 wndPtr
->rectWindow
.top
- wndPtr
->rectClient
.top
);
1153 if (erase
) RedrawWindow( hwnd
, NULL
, 0, RDW_ERASENOW
| RDW_NOCHILDREN
);
1155 WIN_ReleaseWndPtr(wndPtr
);
1160 /***********************************************************************
1161 * ExcludeUpdateRgn16 (USER.238)
1163 INT16 WINAPI
ExcludeUpdateRgn16( HDC16 hdc
, HWND16 hwnd
)
1165 return ExcludeUpdateRgn( hdc
, hwnd
);
1169 /***********************************************************************
1170 * ExcludeUpdateRgn32 (USER32.195)
1172 INT WINAPI
ExcludeUpdateRgn( HDC hdc
, HWND hwnd
)
1177 if (!(wndPtr
= WIN_FindWndPtr( hwnd
))) return ERROR
;
1179 if (wndPtr
->hrgnUpdate
)
1182 HRGN hrgn
= CreateRectRgn(wndPtr
->rectWindow
.left
- wndPtr
->rectClient
.left
,
1183 wndPtr
->rectWindow
.top
- wndPtr
->rectClient
.top
,
1184 wndPtr
->rectWindow
.right
- wndPtr
->rectClient
.left
,
1185 wndPtr
->rectWindow
.bottom
- wndPtr
->rectClient
.top
);
1186 if( wndPtr
->hrgnUpdate
> 1 )
1188 CombineRgn(hrgn
, wndPtr
->hrgnUpdate
, 0, RGN_COPY
);
1189 OffsetRgn(hrgn
, wndPtr
->rectWindow
.left
- wndPtr
->rectClient
.left
,
1190 wndPtr
->rectWindow
.top
- wndPtr
->rectClient
.top
);
1193 /* do ugly coordinate translations in dce.c */
1195 ret
= DCE_ExcludeRgn( hdc
, wndPtr
, hrgn
);
1196 DeleteObject( hrgn
);
1197 WIN_ReleaseWndPtr(wndPtr
);
1200 WIN_ReleaseWndPtr(wndPtr
);
1201 return GetClipBox( hdc
, &rect
);