2 * Window painting functions
4 * Copyright 1993, 1994, 1995 Alexandre Julliard
6 * FIXME: Do not repaint full nonclient area all the time. Instead, compute
7 * intersection with hrgnUpdate (which should be moved from client to
8 * window coords as well, lookup 'the pain' comment in the winpos.c).
20 /* #define DEBUG_WIN */
23 /* Last CTLCOLOR id */
24 #define CTLCOLOR_MAX CTLCOLOR_STATIC
26 /***********************************************************************
30 void WIN_UpdateNCArea(WND* wnd, BOOL32 bUpdate)
35 dprintf_nonclient(stddeb,"NCUpdate: hwnd %04x, hrgnUpdate %04x\n",
36 wnd->hwndSelf, wnd->hrgnUpdate );
38 /* desktop window doesn't have nonclient area */
39 if(wnd == WIN_GetDesktop())
41 wnd->flags &= ~WIN_NEEDS_NCPAINT;
45 if( wnd->hrgnUpdate > 1 )
47 ClientToScreen16(wnd->hwndSelf, &pt);
49 hClip = CreateRectRgn32( 0, 0, 0, 0 );
50 if (!CombineRgn32( hClip, wnd->hrgnUpdate, 0, RGN_COPY ))
52 DeleteObject32(hClip);
56 OffsetRgn32( hClip, pt.x, pt.y );
60 /* exclude non-client area from update region */
61 HRGN32 hrgn = CreateRectRgn32( 0, 0,
62 wnd->rectClient.right - wnd->rectClient.left,
63 wnd->rectClient.bottom - wnd->rectClient.top);
65 if (hrgn && (CombineRgn32( wnd->hrgnUpdate, wnd->hrgnUpdate,
66 hrgn, RGN_AND) == NULLREGION))
68 DeleteObject32( wnd->hrgnUpdate );
72 DeleteObject32( hrgn );
76 wnd->flags &= ~WIN_NEEDS_NCPAINT;
78 if ((wnd->hwndSelf == GetActiveWindow32()) &&
79 !(wnd->flags & WIN_NCACTIVATED))
81 wnd->flags |= WIN_NCACTIVATED;
82 if( hClip > 1) DeleteObject32( hClip );
86 if (hClip) SendMessage16( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
88 if (hClip > 1) DeleteObject32( hClip );
92 /***********************************************************************
93 * BeginPaint16 (USER.39)
95 HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
99 WND *wndPtr = WIN_FindWndPtr( hwnd );
100 if (!wndPtr) return 0;
102 bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
104 wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
106 if (wndPtr->flags & WIN_NEEDS_NCPAINT) WIN_UpdateNCArea( wndPtr, TRUE );
108 if (((hrgnUpdate = wndPtr->hrgnUpdate) != 0) ||
109 (wndPtr->flags & WIN_INTERNAL_PAINT))
110 QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
112 wndPtr->hrgnUpdate = 0;
113 wndPtr->flags &= ~WIN_INTERNAL_PAINT;
117 dprintf_win(stddeb,"hrgnUpdate = %04x, ", hrgnUpdate);
119 /* When bIcon is TRUE hrgnUpdate is automatically in window coordinates
120 * (because rectClient == rectWindow for WS_MINIMIZE windows).
123 if (wndPtr->class->style & CS_PARENTDC)
124 /* Don't clip the output to the update region for CS_PARENTDC window */
125 lps->hdc = GetDCEx16( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
126 (bIcon ? DCX_WINDOW : 0) );
128 lps->hdc = GetDCEx16(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
129 DCX_WINDOWPAINT | DCX_USESTYLE |
130 (bIcon ? DCX_WINDOW : 0) );
132 dprintf_win(stddeb,"hdc = %04x\n", lps->hdc);
136 fprintf(stderr, "GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
140 GetRgnBox16( InquireVisRgn(lps->hdc), &lps->rcPaint );
141 DPtoLP16( lps->hdc, (LPPOINT16)&lps->rcPaint, 2 );
143 if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
145 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
146 lps->fErase = !SendMessage16(hwnd, (bIcon) ? WM_ICONERASEBKGND
148 (WPARAM16)lps->hdc, 0 );
150 else lps->fErase = TRUE;
156 /***********************************************************************
157 * BeginPaint32 (USER32.9)
159 HDC32 WINAPI BeginPaint32( HWND32 hwnd, PAINTSTRUCT32 *lps )
163 BeginPaint16( hwnd, &ps );
164 lps->hdc = (HDC32)ps.hdc;
165 lps->fErase = ps.fErase;
166 lps->rcPaint.top = ps.rcPaint.top;
167 lps->rcPaint.left = ps.rcPaint.left;
168 lps->rcPaint.right = ps.rcPaint.right;
169 lps->rcPaint.bottom = ps.rcPaint.bottom;
170 lps->fRestore = ps.fRestore;
171 lps->fIncUpdate = ps.fIncUpdate;
176 /***********************************************************************
177 * EndPaint16 (USER.40)
179 BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
181 ReleaseDC16( hwnd, lps->hdc );
187 /***********************************************************************
188 * EndPaint32 (USER32.175)
190 BOOL32 WINAPI EndPaint32( HWND32 hwnd, const PAINTSTRUCT32 *lps )
192 ReleaseDC32( hwnd, lps->hdc );
198 /***********************************************************************
199 * FillWindow (USER.324)
201 void WINAPI FillWindow( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
204 GetClientRect16( hwnd, &rect );
205 DPtoLP16( hdc, (LPPOINT16)&rect, 2 );
206 PaintRect( hwndParent, hwnd, hdc, hbrush, &rect );
210 /***********************************************************************
211 * PaintRect (USER.325)
213 void WINAPI PaintRect( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
214 HBRUSH16 hbrush, const RECT16 *rect)
216 /* Send WM_CTLCOLOR message if needed */
218 if ((UINT32)hbrush <= CTLCOLOR_MAX)
220 if (!hwndParent) return;
221 hbrush = (HBRUSH16)SendMessage32A( hwndParent,
222 WM_CTLCOLORMSGBOX + (UINT32)hbrush,
223 (WPARAM32)hdc, (LPARAM)hwnd );
225 if (hbrush) FillRect16( hdc, rect, hbrush );
229 /***********************************************************************
230 * GetControlBrush (USER.326)
232 HBRUSH16 WINAPI GetControlBrush( HWND16 hwnd, HDC16 hdc, UINT16 control )
234 return (HBRUSH16)SendMessage32A( GetParent32(hwnd), WM_CTLCOLOR+control,
235 (WPARAM32)hdc, (LPARAM)hwnd );
239 /***********************************************************************
242 * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
243 * SendMessage() calls. From SDK:
244 * This message avoids lots of inter-app message traffic
245 * by switching to the other task and continuing the
249 * LOWORD(lParam) = hrgnClip
250 * HIWORD(lParam) = hwndSkip (not used; always NULL)
252 * All in all, a prime candidate for a rewrite.
254 BOOL32 PAINT_RedrawWindow( HWND32 hwnd, const RECT32 *rectUpdate,
255 HRGN32 hrgnUpdate, UINT32 flags, UINT32 control )
263 if (!hwnd) hwnd = GetDesktopWindow32();
264 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
265 if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) )
266 || (wndPtr->flags & WIN_NO_REDRAW)) return TRUE; /* No redraw needed */
268 bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
271 dprintf_win(stddeb, "RedrawWindow: %04x %d,%d-%d,%d %04x flags=%04x\n",
272 hwnd, rectUpdate->left, rectUpdate->top,
273 rectUpdate->right, rectUpdate->bottom, hrgnUpdate, flags );
277 dprintf_win(stddeb, "RedrawWindow: %04x NULL %04x flags=%04x\n",
278 hwnd, hrgnUpdate, flags);
281 GetClientRect32( hwnd, &rectClient );
283 if (flags & RDW_INVALIDATE) /* Invalidate */
285 int rgnNotEmpty = COMPLEXREGION;
287 if (wndPtr->hrgnUpdate > 1) /* Is there already an update region? */
289 if ((hrgn = hrgnUpdate) == 0)
290 hrgn = CreateRectRgnIndirect32( rectUpdate ? rectUpdate :
292 rgnNotEmpty = CombineRgn32( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
294 if (!hrgnUpdate) DeleteObject32( hrgn );
296 else /* No update region yet */
298 if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
299 QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
302 wndPtr->hrgnUpdate = CreateRectRgn32( 0, 0, 0, 0 );
303 rgnNotEmpty = CombineRgn32( wndPtr->hrgnUpdate, hrgnUpdate,
306 else wndPtr->hrgnUpdate = CreateRectRgnIndirect32( rectUpdate ?
307 rectUpdate : &rectClient );
310 if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
312 /* check for bogus update region */
313 if ( rgnNotEmpty == NULLREGION )
315 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
316 DeleteObject32( wndPtr->hrgnUpdate );
317 wndPtr->hrgnUpdate=0;
318 if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
319 QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
322 if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
323 flags |= RDW_FRAME; /* Force children frame invalidation */
325 else if (flags & RDW_VALIDATE) /* Validate */
327 /* We need an update region in order to validate anything */
328 if (wndPtr->hrgnUpdate > 1)
330 if (!hrgnUpdate && !rectUpdate)
332 /* Special case: validate everything */
333 DeleteObject32( wndPtr->hrgnUpdate );
334 wndPtr->hrgnUpdate = 0;
338 if ((hrgn = hrgnUpdate) == 0)
339 hrgn = CreateRectRgnIndirect32( rectUpdate );
340 if (CombineRgn32( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
341 hrgn, RGN_DIFF ) == NULLREGION)
343 DeleteObject32( wndPtr->hrgnUpdate );
344 wndPtr->hrgnUpdate = 0;
346 if (!hrgnUpdate) DeleteObject32( hrgn );
348 if (!wndPtr->hrgnUpdate) /* No more update region */
349 if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
350 QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
352 if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
353 if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
356 /* Set/clear internal paint flag */
358 if (flags & RDW_INTERNALPAINT)
360 if ( wndPtr->hrgnUpdate <= 1 && !(wndPtr->flags & WIN_INTERNAL_PAINT))
361 QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
362 wndPtr->flags |= WIN_INTERNAL_PAINT;
364 else if (flags & RDW_NOINTERNALPAINT)
366 if ( wndPtr->hrgnUpdate <= 1 && (wndPtr->flags & WIN_INTERNAL_PAINT))
367 QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
368 wndPtr->flags &= ~WIN_INTERNAL_PAINT;
371 /* Erase/update window */
373 if (flags & RDW_UPDATENOW)
375 if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
376 SendMessage16( hwnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
378 else if (flags & RDW_ERASENOW)
380 if (wndPtr->flags & WIN_NEEDS_NCPAINT)
381 WIN_UpdateNCArea( wndPtr, FALSE);
383 if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
385 HDC32 hdc = GetDCEx32( hwnd, wndPtr->hrgnUpdate,
386 DCX_INTERSECTRGN | DCX_USESTYLE |
387 DCX_KEEPCLIPRGN | DCX_WINDOWPAINT |
388 (bIcon ? DCX_WINDOW : 0) );
391 if (SendMessage16( hwnd, (bIcon) ? WM_ICONERASEBKGND
394 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
395 ReleaseDC32( hwnd, hdc );
400 /* Recursively process children */
402 if (!(flags & RDW_NOCHILDREN) &&
403 ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) &&
404 !(wndPtr->dwStyle & WS_MINIMIZE) )
406 if ( hrgnUpdate || rectUpdate )
408 if (!(hrgn = CreateRectRgn32( 0, 0, 0, 0 ))) return TRUE;
411 control |= (RDW_C_DELETEHRGN | RDW_C_USEHRGN);
412 if( !(hrgnUpdate = CreateRectRgnIndirect32( rectUpdate )) )
414 DeleteObject32( hrgn );
418 if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
420 for (ppWnd = list; *ppWnd; ppWnd++)
423 if (!IsWindow32(wndPtr->hwndSelf)) continue;
424 if (wndPtr->dwStyle & WS_VISIBLE)
427 wndPtr->rectWindow.left, wndPtr->rectWindow.top,
428 wndPtr->rectWindow.right, wndPtr->rectWindow.bottom );
429 if (CombineRgn32( hrgn, hrgn, hrgnUpdate, RGN_AND ))
431 OffsetRgn32( hrgn, -wndPtr->rectClient.left,
432 -wndPtr->rectClient.top );
433 PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, hrgn, flags,
438 HeapFree( SystemHeap, 0, list );
440 DeleteObject32( hrgn );
441 if (control & RDW_C_DELETEHRGN) DeleteObject32( hrgnUpdate );
445 if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
447 for (ppWnd = list; *ppWnd; ppWnd++)
450 if (IsWindow32( wndPtr->hwndSelf ))
451 PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, 0, flags, 0 );
453 HeapFree( SystemHeap, 0, list );
462 /***********************************************************************
463 * RedrawWindow32 (USER32.425)
465 BOOL32 WINAPI RedrawWindow32( HWND32 hwnd, const RECT32 *rectUpdate,
466 HRGN32 hrgnUpdate, UINT32 flags )
468 return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
472 /***********************************************************************
473 * RedrawWindow16 (USER.290)
475 BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
476 HRGN16 hrgnUpdate, UINT16 flags )
481 CONV_RECT16TO32( rectUpdate, &r );
482 return (BOOL16)RedrawWindow32( (HWND32)hwnd, &r, hrgnUpdate, flags );
484 return (BOOL16)PAINT_RedrawWindow( (HWND32)hwnd, NULL,
485 (HRGN32)hrgnUpdate, flags, 0 );
489 /***********************************************************************
490 * UpdateWindow16 (USER.124)
492 void WINAPI UpdateWindow16( HWND16 hwnd )
494 PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
497 /***********************************************************************
498 * UpdateWindow32 (USER32.566)
500 void WINAPI UpdateWindow32( HWND32 hwnd )
502 PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
505 /***********************************************************************
506 * InvalidateRgn16 (USER.126)
508 void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
510 PAINT_RedrawWindow((HWND32)hwnd, NULL, (HRGN32)hrgn,
511 RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
515 /***********************************************************************
516 * InvalidateRgn32 (USER32.328)
518 void WINAPI InvalidateRgn32( HWND32 hwnd, HRGN32 hrgn, BOOL32 erase )
520 PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
524 /***********************************************************************
525 * InvalidateRect16 (USER.125)
527 void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
529 RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
533 /***********************************************************************
534 * InvalidateRect32 (USER32.327)
536 void WINAPI InvalidateRect32( HWND32 hwnd, const RECT32 *rect, BOOL32 erase )
538 PAINT_RedrawWindow( hwnd, rect, 0,
539 RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
543 /***********************************************************************
544 * ValidateRgn16 (USER.128)
546 void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
548 PAINT_RedrawWindow( (HWND32)hwnd, NULL, (HRGN32)hrgn,
549 RDW_VALIDATE | RDW_NOCHILDREN, 0 );
553 /***********************************************************************
554 * ValidateRgn32 (USER32.571)
556 void WINAPI ValidateRgn32( HWND32 hwnd, HRGN32 hrgn )
558 PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
562 /***********************************************************************
563 * ValidateRect16 (USER.127)
565 void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
567 RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
571 /***********************************************************************
572 * ValidateRect32 (USER32.570)
574 void WINAPI ValidateRect32( HWND32 hwnd, const RECT32 *rect )
576 PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
580 /***********************************************************************
581 * GetUpdateRect16 (USER.190)
583 BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
588 if (!rect) return GetUpdateRect32( hwnd, NULL, erase );
589 ret = GetUpdateRect32( hwnd, &r, erase );
590 CONV_RECT32TO16( &r, rect );
595 /***********************************************************************
596 * GetUpdateRect32 (USER32.296)
598 BOOL32 WINAPI GetUpdateRect32( HWND32 hwnd, LPRECT32 rect, BOOL32 erase )
600 WND * wndPtr = WIN_FindWndPtr( hwnd );
601 if (!wndPtr) return FALSE;
605 if (wndPtr->hrgnUpdate > 1)
607 HRGN32 hrgn = CreateRectRgn32( 0, 0, 0, 0 );
608 if (GetUpdateRgn32( hwnd, hrgn, erase ) == ERROR) return FALSE;
609 GetRgnBox32( hrgn, rect );
610 DeleteObject32( hrgn );
612 else SetRectEmpty32( rect );
614 return (wndPtr->hrgnUpdate > 1);
618 /***********************************************************************
619 * GetUpdateRgn16 (USER.237)
621 INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
623 return GetUpdateRgn32( hwnd, hrgn, erase );
627 /***********************************************************************
628 * GetUpdateRgn32 (USER32.297)
630 INT32 WINAPI GetUpdateRgn32( HWND32 hwnd, HRGN32 hrgn, BOOL32 erase )
633 WND * wndPtr = WIN_FindWndPtr( hwnd );
634 if (!wndPtr) return ERROR;
636 if (wndPtr->hrgnUpdate <= 1)
638 SetRectRgn32( hrgn, 0, 0, 0, 0 );
641 retval = CombineRgn32( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
642 if (erase) RedrawWindow32( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
647 /***********************************************************************
648 * ExcludeUpdateRgn16 (USER.238)
650 INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
652 return ExcludeUpdateRgn32( hdc, hwnd );
656 /***********************************************************************
657 * ExcludeUpdateRgn32 (USER32.194)
659 INT32 WINAPI ExcludeUpdateRgn32( HDC32 hdc, HWND32 hwnd )
664 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
666 if (wndPtr->hrgnUpdate)
669 HRGN32 hrgn = CreateRectRgn32(wndPtr->rectWindow.left - wndPtr->rectClient.left,
670 wndPtr->rectWindow.top - wndPtr->rectClient.top,
671 wndPtr->rectClient.right - wndPtr->rectClient.left,
672 wndPtr->rectClient.bottom - wndPtr->rectClient.top);
673 if( wndPtr->hrgnUpdate > 1 )
674 CombineRgn32(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
676 /* do ugly coordinate translations in dce.c */
678 ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
679 DeleteObject32( hrgn );
682 return GetClipBox32( hdc, &rect );