2 * Window painting functions
4 * Copyright 1993, 1994, 1995 Alexandre Julliard
11 #include "wine/winuser16.h"
12 #include "wine/unicode.h"
13 #include "wine/server.h"
19 #include "debugtools.h"
21 DEFAULT_DEBUG_CHANNEL(win);
22 DECLARE_DEBUG_CHANNEL(nonclient);
24 /* client rect in window coordinates */
26 #define GETCLIENTRECTW( wnd, r ) (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
27 (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
28 (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
29 (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
31 /* PAINT_RedrawWindow() control flags */
32 #define RDW_EX_DELAY_NCPAINT 0x0020
34 /* WIN_UpdateNCRgn() flags */
35 #define UNC_CHECK 0x0001
36 #define UNC_ENTIRE 0x0002
37 #define UNC_REGION 0x0004
38 #define UNC_UPDATE 0x0008
39 #define UNC_DELAY_NCPAINT 0x0010
40 #define UNC_IN_BEGINPAINT 0x0020
43 #define COLOR_MAX COLOR_GRADIENTINACTIVECAPTION
46 /***********************************************************************
49 * Add an increment (normally 1 or -1) to the current paint count of a window.
51 static void add_paint_count( HWND hwnd, int incr )
53 SERVER_START_REQ( inc_window_paint_count )
57 wine_server_call( req );
63 /***********************************************************************
64 * WIN_HaveToDelayNCPAINT
66 * Currently, in the Wine painting mechanism, the WM_NCPAINT message
67 * is generated as soon as a region intersecting the non-client area
68 * of a window is invalidated.
70 * This technique will work fine for all windows whose parents
71 * have the WS_CLIPCHILDREN style. When the parents have that style,
72 * they are not going to override the contents of their children.
73 * However, when the parent doesn't have that style, Windows relies
74 * on a "painter's algorithm" to display the contents of the windows.
75 * That is, windows are painted from back to front. This includes the
78 * This method looks at the current state of a window to determine
79 * if the sending of the WM_NCPAINT message should be delayed until
80 * the BeginPaint call.
83 * wndPtr - A Locked window pointer to the window we're
85 * uncFlags - This is the flag passed to the WIN_UpdateNCRgn
86 * function. This is a shortcut for the cases when
87 * we already know when to avoid scanning all the
88 * parents of a window. If you already know that this
89 * window's NCPAINT should be delayed, set the
90 * UNC_DELAY_NCPAINT flag for this parameter.
92 * This shortcut behavior is implemented in the
96 static BOOL WIN_HaveToDelayNCPAINT( HWND hwnd, UINT uncFlags)
99 * Test the shortcut first. (duh)
101 if (uncFlags & UNC_DELAY_NCPAINT)
105 * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
106 * method only. This is another shortcut to avoid going
107 * up the parent's chain of the window to finally
108 * figure-out that none of them has an invalid region.
110 if (uncFlags & UNC_IN_BEGINPAINT)
114 * Scan all the parents of this window to find a window
115 * that doesn't have the WS_CLIPCHILDREN style and that
116 * has an invalid region.
118 while ((hwnd = GetAncestor( hwnd, GA_PARENT )))
120 WND* parentWnd = WIN_FindWndPtr( hwnd );
121 if (!(parentWnd->dwStyle & WS_CLIPCHILDREN) && parentWnd->hrgnUpdate)
123 WIN_ReleaseWndPtr( parentWnd );
126 WIN_ReleaseWndPtr( parentWnd );
131 /***********************************************************************
135 * Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
136 * Crop hrgnUpdate to a client rect, especially if it 1.
137 * If UNC_REGION is set return update region for the client rect.
139 * NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
140 * The trick is that when the returned region handle may be different from hRgn.
141 * In this case the old hRgn must be considered gone. BUT, if the returned value
142 * is 1 then the hRgn is preserved and RDW_Paint() will have to get
143 * a DC without extra clipping region.
145 static HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
151 TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
152 wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
154 /* desktop window doesn't have a nonclient area */
155 if(wnd->hwndSelf == GetDesktopWindow())
157 wnd->flags &= ~WIN_NEEDS_NCPAINT;
158 if( wnd->hrgnUpdate > 1 )
159 hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
162 hrgnRet = wnd->hrgnUpdate;
167 if ((wnd->hwndSelf == GetForegroundWindow()) &&
168 !(wnd->flags & WIN_NCACTIVATED) )
170 wnd->flags |= WIN_NCACTIVATED;
171 uncFlags |= UNC_ENTIRE;
175 * If the window's non-client area needs to be painted,
177 if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
178 !WIN_HaveToDelayNCPAINT(wnd->hwndSelf, uncFlags) )
182 wnd->flags &= ~WIN_NEEDS_NCPAINT;
183 GETCLIENTRECTW( wnd, r );
185 TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
186 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
187 if( wnd->hrgnUpdate > 1 )
189 /* Check if update rgn overlaps with nonclient area */
191 GetRgnBox( wnd->hrgnUpdate, &r2 );
192 UnionRect( &r3, &r2, &r );
193 if( r3.left != r.left || r3.top != r.top ||
194 r3.right != r.right || r3.bottom != r.bottom ) /* it does */
196 /* crop hrgnUpdate, save old one in hClip - the only
197 * case that places a valid region handle in hClip */
199 hClip = wnd->hrgnUpdate;
200 wnd->hrgnUpdate = REGION_CropRgn( hRgn, hClip, &r, NULL );
201 if( uncFlags & UNC_REGION ) hrgnRet = hClip;
204 if( uncFlags & UNC_CHECK )
206 GetRgnBox( wnd->hrgnUpdate, &r3 );
207 if( IsRectEmpty( &r3 ) )
209 /* delete the update region since all invalid
210 * parts were in the nonclient area */
212 DeleteObject( wnd->hrgnUpdate );
214 if(!(wnd->flags & WIN_INTERNAL_PAINT))
215 add_paint_count( wnd->hwndSelf, -1 );
217 wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
221 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
224 if( wnd->hrgnUpdate == 1 )/* entire window */
226 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
227 if( uncFlags & UNC_REGION ) hrgnRet = 1;
228 uncFlags |= UNC_ENTIRE;
231 else /* no WM_NCPAINT unless forced */
233 if( wnd->hrgnUpdate > 1 )
236 if( uncFlags & UNC_REGION )
237 hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
240 if( wnd->hrgnUpdate == 1 && (uncFlags & UNC_UPDATE) )
242 GETCLIENTRECTW( wnd, r );
243 wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
244 if( uncFlags & UNC_REGION ) hrgnRet = 1;
248 if(!hClip && (uncFlags & UNC_ENTIRE) )
250 /* still don't do anything if there is no nonclient area */
251 hClip = (memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
254 if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
256 if ( hClip == hrgnRet && hrgnRet > 1 ) {
257 hClip = CreateRectRgn( 0, 0, 0, 0 );
258 CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
261 SendMessageA( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
262 if( (hClip > 1) && (hClip != hRgn) && (hClip != hrgnRet) )
263 DeleteObject( hClip );
265 * Since all Window locks are suspended while processing the WM_NCPAINT
266 * we want to make sure the window still exists before continuing.
268 if (!IsWindow(wnd->hwndSelf))
270 DeleteObject(hrgnRet);
275 TRACE_(nonclient)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
281 /***********************************************************************
282 * RDW_ValidateParent [RDW_UpdateRgns() helper]
284 * Validate the portions of parents that are covered by a validated child
287 static void RDW_ValidateParent(WND *wndChild)
292 if (wndChild->hrgnUpdate == 1 ) {
296 r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
297 r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
298 hrg = CreateRectRgnIndirect( &r );
300 hrg = wndChild->hrgnUpdate;
302 parent = GetAncestor( wndChild->hwndSelf, GA_PARENT );
303 while (parent && parent != GetDesktopWindow())
305 WND *wndParent = WIN_FindWndPtr( parent );
306 if (!(wndParent->dwStyle & WS_CLIPCHILDREN))
308 if (wndParent->hrgnUpdate != 0)
311 RECT rect, rectParent;
312 if( wndParent->hrgnUpdate == 1 )
318 r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
319 r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
321 wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
323 /* we must offset the child region by the offset of the child rect in the parent */
324 GetWindowRect(wndParent->hwndSelf, &rectParent);
325 GetWindowRect(wndChild->hwndSelf, &rect);
326 ptOffset.x = rect.left - rectParent.left;
327 ptOffset.y = rect.top - rectParent.top;
328 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
329 CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
330 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
333 WIN_ReleaseWndPtr( wndParent );
334 parent = GetAncestor( parent, GA_PARENT );
336 if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
339 /***********************************************************************
340 * RDW_UpdateRgns [RedrawWindow() helper]
342 * Walks the window tree and adds/removes parts of the hRgn to/from update
343 * regions of windows that overlap it. Also, manages internal paint flags.
345 * NOTE: Walks the window tree so the caller must lock it.
346 * MUST preserve hRgn (can modify but then has to restore).
348 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
351 * Called only when one of the following is set:
352 * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
355 BOOL bHadOne = wndPtr->hrgnUpdate && hRgn;
356 BOOL bChildren = (!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
357 ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
362 r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
363 r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
365 TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
367 if( flags & RDW_INVALIDATE )
371 switch( wndPtr->hrgnUpdate )
374 CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
377 wndPtr->hrgnUpdate = REGION_CropRgn( wndPtr->hrgnUpdate,
378 wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
382 GetRgnBox( wndPtr->hrgnUpdate, &r );
383 if( IsRectEmpty( &r ) )
385 DeleteObject( wndPtr->hrgnUpdate );
386 wndPtr->hrgnUpdate = 0;
391 case 1: /* already an entire window */
397 if( wndPtr->hrgnUpdate > 1 )
398 DeleteObject( wndPtr->hrgnUpdate );
399 wndPtr->hrgnUpdate = 1;
402 hRgn = wndPtr->hrgnUpdate; /* this is a trick that depends on code in PAINT_RedrawWindow() */
404 if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
405 add_paint_count( wndPtr->hwndSelf, 1 );
407 if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
408 if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
411 else if( flags & RDW_VALIDATE )
413 if( wndPtr->hrgnUpdate )
417 if( wndPtr->hrgnUpdate == 1 )
418 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
420 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
423 DeleteObject( wndPtr->hrgnUpdate );
424 wndPtr->hrgnUpdate = 0;
427 else /* validate everything */
429 if( wndPtr->hrgnUpdate > 1 ) DeleteObject( wndPtr->hrgnUpdate );
430 wndPtr->hrgnUpdate = 0;
433 if( !wndPtr->hrgnUpdate )
435 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
436 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
437 add_paint_count( wndPtr->hwndSelf, -1 );
441 if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
442 if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
446 if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
447 RDW_ValidateParent(wndPtr); /* validate parent covered by region */
449 /* in/validate child windows that intersect with the region if it
450 * is a valid handle. */
452 if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
455 if( hRgn > 1 && bChildren && (list = WIN_ListChildren( wndPtr->hwndSelf )))
457 POINT ptTotal, prevOrigin = {0,0};
461 ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
462 ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
464 for(i = ptTotal.x = ptTotal.y = 0; list[i]; i++)
466 WND *wnd = WIN_FindWndPtr( list[i] );
468 if( wnd->dwStyle & WS_VISIBLE )
472 r.left = wnd->rectWindow.left + ptClient.x;
473 r.right = wnd->rectWindow.right + ptClient.x;
474 r.top = wnd->rectWindow.top + ptClient.y;
475 r.bottom = wnd->rectWindow.bottom + ptClient.y;
477 ptOffset.x = r.left - prevOrigin.x;
478 ptOffset.y = r.top - prevOrigin.y;
479 OffsetRect( &r, -ptTotal.x, -ptTotal.y );
481 if( RectInRegion( hRgn, &r ) )
483 OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
484 RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
485 prevOrigin.x = r.left + ptTotal.x;
486 prevOrigin.y = r.top + ptTotal.y;
487 ptTotal.x += ptOffset.x;
488 ptTotal.y += ptOffset.y;
491 WIN_ReleaseWndPtr( wnd );
493 HeapFree( GetProcessHeap(), 0, list );
494 OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
499 /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
504 if ((list = WIN_ListChildren( wndPtr->hwndSelf )))
507 for (i = 0; list[i]; i++)
509 WND *wnd = WIN_FindWndPtr( list[i] );
511 if( wnd->dwStyle & WS_VISIBLE )
512 RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
513 WIN_ReleaseWndPtr( wnd );
515 HeapFree( GetProcessHeap(), 0, list );
521 /* Set/clear internal paint flag */
523 if (flags & RDW_INTERNALPAINT)
525 if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
526 add_paint_count( wndPtr->hwndSelf, 1 );
527 wndPtr->flags |= WIN_INTERNAL_PAINT;
529 else if (flags & RDW_NOINTERNALPAINT)
531 if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
532 add_paint_count( wndPtr->hwndSelf, -1 );
533 wndPtr->flags &= ~WIN_INTERNAL_PAINT;
537 /***********************************************************************
538 * RDW_Paint [RedrawWindow() helper]
540 * Walks the window tree and paints/erases windows that have
541 * nonzero update regions according to redraw flags. hrgn is a scratch
542 * region passed down during recursion. Must not be 1.
545 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
547 /* NOTE: wndPtr is locked by caller.
549 * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
550 * SendMessage() calls. This is a comment inside DefWindowProc() source
553 * This message avoids lots of inter-app message traffic
554 * by switching to the other task and continuing the
558 * LOWORD(lParam) = hrgnClip
559 * HIWORD(lParam) = hwndSkip (not used; always NULL)
563 HWND hWnd = wndPtr->hwndSelf;
564 BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassLongA(hWnd, GCL_HICON));
566 /* Erase/update the window itself ... */
568 TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
571 * Check if this window should delay it's processing of WM_NCPAINT.
572 * See WIN_HaveToDelayNCPAINT for a description of the mechanism
574 if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr->hwndSelf, 0) )
575 ex |= RDW_EX_DELAY_NCPAINT;
577 if (flags & RDW_UPDATENOW)
579 if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
580 SendMessageW( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
582 else if (flags & RDW_ERASENOW)
584 UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
587 hrgnRet = WIN_UpdateNCRgn(wndPtr,
589 UNC_REGION | UNC_CHECK |
590 ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
594 if( hrgnRet > 1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
595 if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
597 if( bIcon ) dcx |= DCX_WINDOW;
600 OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
601 wndPtr->rectWindow.top - wndPtr->rectClient.top);
603 dcx &= ~DCX_INTERSECTRGN;
604 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
606 if (SendMessageW( hWnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
608 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
609 ReleaseDC( hWnd, hDC );
615 if( !IsWindow(hWnd) ) return hrgn;
617 /* ... and its child windows */
619 if(!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
620 ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
624 if( (list = WIN_ListChildren( wndPtr->hwndSelf )) )
626 for (phwnd = list; *phwnd; phwnd++)
628 if (!(wndPtr = WIN_FindWndPtr( *phwnd ))) continue;
629 if ( (wndPtr->dwStyle & WS_VISIBLE) &&
630 (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
631 hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
632 WIN_ReleaseWndPtr(wndPtr);
634 HeapFree( GetProcessHeap(), 0, list );
642 /***********************************************************************
643 * RedrawWindow (USER32.@)
645 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
646 HRGN hrgnUpdate, UINT flags )
653 if (!hwnd) hwnd = GetDesktopWindow();
655 /* check if the window or its parents are visible/not minimized */
657 if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
659 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
664 GetRgnBox( hrgnUpdate, &r );
665 TRACE( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x\n",
666 hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags );
674 TRACE( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x\n",
675 hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
676 r.top, r.right, r.bottom, hrgnUpdate, flags );
681 /* process pending events and messages before painting */
682 if (flags & RDW_UPDATENOW)
683 MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
685 /* prepare an update region in window coordinates */
687 if( flags & RDW_FRAME )
688 r = wndPtr->rectWindow;
690 r = wndPtr->rectClient;
692 pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
693 pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
694 OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
696 if (flags & RDW_INVALIDATE) /* ------------------------- Invalidate */
698 /* If the window doesn't have hrgnUpdate we leave hRgn zero
699 * and put a new region straight into wndPtr->hrgnUpdate
700 * so that RDW_UpdateRgns() won't have to do any extra work.
705 if( wndPtr->hrgnUpdate )
706 hRgn = REGION_CropRgn( 0, hrgnUpdate, NULL, &pt );
708 wndPtr->hrgnUpdate = REGION_CropRgn( 0, hrgnUpdate, &r, &pt );
710 else if( rectUpdate )
712 if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
713 OffsetRect( &r2, pt.x, pt.y );
714 if( wndPtr->hrgnUpdate == 0 )
715 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
717 hRgn = CreateRectRgnIndirect( &r2 );
719 else /* entire window or client depending on RDW_FRAME */
721 if( flags & RDW_FRAME )
723 if (wndPtr->hrgnUpdate) hRgn = 1;
724 else wndPtr->hrgnUpdate = 1;
728 GETCLIENTRECTW( wndPtr, r2 );
729 if( wndPtr->hrgnUpdate == 0 )
730 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
732 hRgn = CreateRectRgnIndirect( &r2 );
736 else if (flags & RDW_VALIDATE) /* ------------------------- Validate */
738 /* In this we cannot leave with zero hRgn */
741 hRgn = REGION_CropRgn( hRgn, hrgnUpdate, &r, &pt );
742 GetRgnBox( hRgn, &r2 );
743 if( IsRectEmpty( &r2 ) ) goto END;
745 else if( rectUpdate )
747 if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
748 OffsetRect( &r2, pt.x, pt.y );
749 hRgn = CreateRectRgnIndirect( &r2 );
751 else /* entire window or client depending on RDW_FRAME */
753 if( flags & RDW_FRAME )
757 GETCLIENTRECTW( wndPtr, r2 );
758 hRgn = CreateRectRgnIndirect( &r2 );
763 /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
765 RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
767 /* Erase/update windows, from now on hRgn is a scratch region */
769 hRgn = RDW_Paint( wndPtr, (hRgn == 1) ? 0 : hRgn, flags, 0 );
772 if( hRgn > 1 && (hRgn != hrgnUpdate) )
774 WIN_ReleaseWndPtr(wndPtr);
779 /***********************************************************************
780 * UpdateWindow (USER32.@)
782 void WINAPI UpdateWindow( HWND hwnd )
784 RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
788 /***********************************************************************
789 * InvalidateRgn (USER32.@)
791 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
793 return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
797 /***********************************************************************
798 * InvalidateRect (USER32.@)
800 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
802 return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
806 /***********************************************************************
807 * ValidateRgn (USER32.@)
809 void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
811 RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
815 /***********************************************************************
816 * ValidateRect (USER32.@)
818 void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
820 RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
824 /***********************************************************************
825 * GetUpdateRect (USER32.@)
827 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
830 WND * wndPtr = WIN_FindWndPtr( hwnd );
831 if (!wndPtr) return FALSE;
835 if (wndPtr->hrgnUpdate > 1)
837 HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
838 if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
843 GetRgnBox( hrgn, rect );
844 DeleteObject( hrgn );
845 if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
847 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
849 DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect, 2);
854 if( wndPtr->hrgnUpdate == 1 )
856 GetClientRect( hwnd, rect );
857 if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
860 SetRectEmpty( rect );
862 retvalue = (wndPtr->hrgnUpdate >= 1);
864 WIN_ReleaseWndPtr(wndPtr);
869 /***********************************************************************
870 * GetUpdateRgn (USER32.@)
872 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
875 WND * wndPtr = WIN_FindWndPtr( hwnd );
876 if (!wndPtr) return ERROR;
878 if (wndPtr->hrgnUpdate == 0)
880 SetRectRgn( hrgn, 0, 0, 0, 0 );
885 if (wndPtr->hrgnUpdate == 1)
887 SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
888 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
889 retval = SIMPLEREGION;
893 retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
894 OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
895 wndPtr->rectWindow.top - wndPtr->rectClient.top );
897 if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
899 WIN_ReleaseWndPtr(wndPtr);
904 /***********************************************************************
905 * ExcludeUpdateRgn (USER32.@)
907 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
912 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
914 if (wndPtr->hrgnUpdate)
917 HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
918 wndPtr->rectWindow.top - wndPtr->rectClient.top,
919 wndPtr->rectWindow.right - wndPtr->rectClient.left,
920 wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
921 if( wndPtr->hrgnUpdate > 1 )
923 CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
924 OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
925 wndPtr->rectWindow.top - wndPtr->rectClient.top );
928 /* do ugly coordinate translations in dce.c */
930 ret = DCE_ExcludeRgn( hdc, hwnd, hrgn );
931 DeleteObject( hrgn );
932 WIN_ReleaseWndPtr(wndPtr);
935 WIN_ReleaseWndPtr(wndPtr);
936 return GetClipBox( hdc, &rect );
941 /***********************************************************************
944 * The Win16 variant doesn't support special color brushes like
945 * the Win32 one, despite the fact that Win16, as well as Win32,
946 * supports special background brushes for a window class.
948 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
952 /* coordinates are logical so we cannot fast-check 'rect',
953 * it will be done later in the PatBlt().
956 if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
957 PatBlt( hdc, rect->left, rect->top,
958 rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
959 SelectObject( hdc, prevBrush );
964 /***********************************************************************
965 * FillRect (USER32.@)
967 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
971 if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
972 hbrush = GetSysColorBrush( (INT) hbrush - 1 );
975 if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
976 PatBlt( hdc, rect->left, rect->top,
977 rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
978 SelectObject( hdc, prevBrush );
983 /***********************************************************************
984 * InvertRect (USER.82)
986 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
988 PatBlt( hdc, rect->left, rect->top,
989 rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
993 /***********************************************************************
994 * InvertRect (USER32.@)
996 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
998 return PatBlt( hdc, rect->left, rect->top,
999 rect->right - rect->left, rect->bottom - rect->top,
1004 /***********************************************************************
1005 * FrameRect (USER32.@)
1007 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1012 if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1013 if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1015 PatBlt( hdc, r.left, r.top, 1,
1016 r.bottom - r.top, PATCOPY );
1017 PatBlt( hdc, r.right - 1, r.top, 1,
1018 r.bottom - r.top, PATCOPY );
1019 PatBlt( hdc, r.left, r.top,
1020 r.right - r.left, 1, PATCOPY );
1021 PatBlt( hdc, r.left, r.bottom - 1,
1022 r.right - r.left, 1, PATCOPY );
1024 SelectObject( hdc, prevBrush );
1029 /***********************************************************************
1030 * FrameRect (USER.83)
1032 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1035 CONV_RECT16TO32( rect16, &rect );
1036 return FrameRect( hdc, &rect, hbrush );
1040 /***********************************************************************
1041 * DrawFocusRect (USER.466)
1043 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1046 CONV_RECT16TO32( rc, &rect32 );
1047 DrawFocusRect( hdc, &rect32 );
1051 /***********************************************************************
1052 * DrawFocusRect (USER32.@)
1054 * FIXME: PatBlt(PATINVERT) with background brush.
1056 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1059 HPEN hOldPen, hNewPen;
1060 INT oldDrawMode, oldBkMode;
1062 hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1063 hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
1064 hOldPen = SelectObject(hdc, hNewPen);
1065 oldDrawMode = SetROP2(hdc, R2_XORPEN);
1066 oldBkMode = SetBkMode(hdc, TRANSPARENT);
1068 Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1070 SetBkMode(hdc, oldBkMode);
1071 SetROP2(hdc, oldDrawMode);
1072 SelectObject(hdc, hOldPen);
1073 DeleteObject(hNewPen);
1074 SelectObject(hdc, hOldBrush);
1080 /**********************************************************************
1081 * DrawAnimatedRects (USER32.@)
1083 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1084 const RECT* lprcFrom,
1085 const RECT* lprcTo )
1087 FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1092 /**********************************************************************
1093 * PAINTING_DrawStateJam
1095 * Jams in the requested type in the dc
1097 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1098 DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1099 LPRECT rc, UINT dtflags, BOOL unicode )
1104 INT cx = rc->right - rc->left;
1105 INT cy = rc->bottom - rc->top;
1110 case DST_PREFIXTEXT:
1112 return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1114 return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1117 return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1120 memdc = CreateCompatibleDC(hdc);
1121 if(!memdc) return FALSE;
1122 hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1128 retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1129 SelectObject(memdc, hbmsave);
1136 /* DRAWSTATEPROC assumes that it draws at the center of coordinates */
1138 OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
1139 bRet = func(hdc, lp, wp, cx, cy);
1140 /* Restore origin */
1141 OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
1149 /**********************************************************************
1150 * PAINTING_DrawState()
1152 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr, DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1153 INT x, INT y, INT cx, INT cy, UINT flags, BOOL unicode )
1155 HBITMAP hbm, hbmsave;
1157 HBRUSH hbsave, hbrtmp = 0;
1160 UINT dtflags = DT_NOCLIP;
1162 UINT opcode = flags & 0xf;
1166 if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len) /* The string is '\0' terminated */
1169 len = strlenW((LPWSTR)lp);
1171 len = strlen((LPSTR)lp);
1174 /* Find out what size the image has if not given by caller */
1178 CURSORICONINFO *ici;
1184 case DST_PREFIXTEXT:
1186 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1188 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1189 if(!retval) return FALSE;
1193 ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1194 if(!ici) return FALSE;
1196 s.cy = ici->nHeight;
1197 GlobalUnlock16((HGLOBAL16)lp);
1201 if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1207 case DST_COMPLEX: /* cx and cy must be set in this mode */
1220 if(flags & DSS_RIGHT) /* This one is not documented in the win32.hlp file */
1221 dtflags |= DT_RIGHT;
1222 if(opcode == DST_TEXT)
1223 dtflags |= DT_NOPREFIX;
1225 /* For DSS_NORMAL we just jam in the image and return */
1226 if((flags & 0x7ff0) == DSS_NORMAL)
1228 return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode);
1231 /* For all other states we need to convert the image to B/W in a local bitmap */
1232 /* before it is displayed */
1233 fg = SetTextColor(hdc, RGB(0, 0, 0));
1234 bg = SetBkColor(hdc, RGB(255, 255, 255));
1235 hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
1236 memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
1237 retval = FALSE; /* assume failure */
1239 /* From here on we must use "goto cleanup" when something goes wrong */
1240 hbm = CreateBitmap(cx, cy, 1, 1, NULL);
1241 if(!hbm) goto cleanup;
1242 memdc = CreateCompatibleDC(hdc);
1243 if(!memdc) goto cleanup;
1244 hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1245 if(!hbmsave) goto cleanup;
1246 rc.left = rc.top = 0;
1249 if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1250 SetBkColor(memdc, RGB(255, 255, 255));
1251 SetTextColor(memdc, RGB(0, 0, 0));
1252 hfsave = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1254 /* DST_COMPLEX may draw text as well,
1255 * so we must be sure that correct font is selected
1257 if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
1258 tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode);
1259 if(hfsave) SelectObject(memdc, hfsave);
1260 if(!tmp) goto cleanup;
1262 /* This state cause the image to be dithered */
1263 if(flags & DSS_UNION)
1265 hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1266 if(!hbsave) goto cleanup;
1267 tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1268 SelectObject(memdc, hbsave);
1269 if(!tmp) goto cleanup;
1272 if (flags & DSS_DISABLED)
1273 hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
1274 else if (flags & DSS_DEFAULT)
1275 hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1277 /* Draw light or dark shadow */
1278 if (flags & (DSS_DISABLED|DSS_DEFAULT))
1280 if(!hbrtmp) goto cleanup;
1281 hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
1282 if(!hbsave) goto cleanup;
1283 if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1284 SelectObject(hdc, hbsave);
1285 DeleteObject(hbrtmp);
1289 if (flags & DSS_DISABLED)
1291 hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1292 if(!hbrtmp) goto cleanup;
1296 hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
1299 hbsave = (HBRUSH)SelectObject(hdc, hbr);
1301 if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1303 retval = TRUE; /* We succeeded */
1306 SetTextColor(hdc, fg);
1307 SetBkColor(hdc, bg);
1309 if(hbsave) SelectObject(hdc, hbsave);
1310 if(hbmsave) SelectObject(memdc, hbmsave);
1311 if(hbrtmp) DeleteObject(hbrtmp);
1312 if(hbm) DeleteObject(hbm);
1313 if(memdc) DeleteDC(memdc);
1318 /**********************************************************************
1319 * DrawStateA (USER32.@)
1321 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1322 DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1323 INT x, INT y, INT cx, INT cy, UINT flags)
1325 return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE);
1328 /**********************************************************************
1329 * DrawStateW (USER32.@)
1331 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1332 DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1333 INT x, INT y, INT cx, INT cy, UINT flags)
1335 return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE);
1338 /***********************************************************************
1339 * SelectPalette (USER.282)
1341 HPALETTE16 WINAPI SelectPalette16( HDC16 hDC, HPALETTE16 hPal,
1342 BOOL16 bForceBackground )
1344 WORD wBkgPalette = 1;
1346 if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
1348 HWND hwnd = WindowFromDC( hDC );
1351 HWND hForeground = GetForegroundWindow();
1352 /* set primary palette if it's related to current active */
1353 if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
1356 return GDISelectPalette16( hDC, hPal, wBkgPalette);
1360 /***********************************************************************
1361 * RealizePalette (USER.283)
1363 UINT16 WINAPI RealizePalette16( HDC16 hDC )
1365 UINT16 realized = GDIRealizePalette16( hDC );
1367 /* do not send anything if no colors were changed */
1368 if (realized && IsDCCurrentPalette16( hDC ))
1370 /* send palette change notification */
1371 HWND hWnd = WindowFromDC( hDC );
1372 if (hWnd) SendMessageA( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0L);
1378 /***********************************************************************
1379 * UserRealizePalette (USER32.@)
1381 UINT WINAPI UserRealizePalette( HDC hDC )
1383 return RealizePalette16( hDC );