git.oblomov.eu Git - wine/blob - windows/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1999 Alex Korobka
   6  */
   7
   8 #include "region.h"
   9 #include "win.h"
  10 #include "queue.h"
  11 #include "dce.h"
  12 #include "heap.h"
  13 #include "debugtools.h"
  14 #include "wine/winuser16.h"
  15 #include "cache.h"
  16
  17 DEFAULT_DEBUG_CHANNEL(win)
  18 DECLARE_DEBUG_CHANNEL(nonclient)
  19
  20 /* client rect in window coordinates */
  21
  22 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  23                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  24                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  25                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  26
  27   /* Last CTLCOLOR id */
  28 #define CTLCOLOR_MAX   CTLCOLOR_STATIC
  29
  30
  31 /***********************************************************************
  32  *           WIN_HaveToDelayNCPAINT
  33  *
  34  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
  35  * is generated as soon as a region intersecting the non-client area
  36  * of a window is invalidated.
  37  *
  38  * This technique will work fine for all windows whose parents
  39  * have the WS_CLIPCHILDREN style. When the parents have that style,
  40  * they are not going to override the contents of their children.
  41  * However, when the parent doesn't have that style, Windows relies
  42  * on a "painter's algorithm" to display the contents of the windows.
  43  * That is, windows are painted from back to front. This includes the
  44  * non-client area.
  45  *
  46  * This method looks at the current state of a window to determine
  47  * if the sending of the WM_NCPAINT message should be delayed until
  48  * the BeginPaint call.
  49  *
  50  * PARAMS:
  51  *   wndPtr   - A Locked window pointer to the window we're
  52  *              examining.
  53  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
  54  *              function. This is a shortcut for the cases when
  55  *              we already know when to avoid scanning all the
  56  *              parents of a window. If you already know that this
  57  *              window's NCPAINT should be delayed, set the
  58  *              UNC_DELAY_NCPAINT flag for this parameter.
  59  *
  60  *              This shortcut behavior is implemented in the
  61  *              RDW_Paint() method.
  62  *
  63  */
  64 static BOOL WIN_HaveToDelayNCPAINT(
  65   WND* wndPtr,
  66   UINT uncFlags)
  67 {
  68   WND* parentWnd = NULL;
  69
  70   /*
  71    * Test the shortcut first. (duh)
  72    */
  73   if (uncFlags & UNC_DELAY_NCPAINT)
  74     return TRUE;
  75
  76   /*
  77    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
  78    * method only. This is another shortcut to avoid going
  79    * up the parent's chain of the window to finally
  80    * figure-out that none of them has an invalid region.
  81    */
  82   if (uncFlags & UNC_IN_BEGINPAINT)
  83     return FALSE;
  84
  85   /*
  86    * Scan all the parents of this window to find a window
  87    * that doesn't have the WS_CLIPCHILDREN style and that
  88    * has an invalid region.
  89    */
  90   parentWnd = WIN_LockWndPtr(wndPtr->parent);
  91
  92   while (parentWnd!=NULL)
  93   {
  94     if ( ((parentWnd->dwStyle & WS_CLIPCHILDREN) == 0) &&
  95          (parentWnd->hrgnUpdate != 0) )
  96     {
  97       WIN_ReleaseWndPtr(parentWnd);
  98       return TRUE;
  99     }
 100
 101     WIN_UpdateWndPtr(&parentWnd, parentWnd->parent);
 102   }
 103
 104   WIN_ReleaseWndPtr(parentWnd);
 105
 106   return FALSE;
 107 }
 108
 109 /***********************************************************************
 110  *           WIN_UpdateNCRgn
 111  *
 112  *  Things to do:
 113  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 114  *      Crop hrgnUpdate to a client rect, especially if it 1.
 115  *      If UNC_REGION is set return update region for the client rect.
 116  *
 117  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 118  *        The trick is that when the returned region handle may be different from hRgn.
 119  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 120  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 121  *        a DC without extra clipping region.
 122  */
 123 HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 124 {
 125     RECT  r;
 126     HRGN  hClip = 0;
 127     HRGN  hrgnRet = 0;
 128
 129     TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
 130                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 131
 132     /* desktop window doesn't have a nonclient area */
 133     if(wnd == WIN_GetDesktop())
 134     {
 135         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 136         if( wnd->hrgnUpdate > 1 )
 137             hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
 138         else
 139         {
 140             hrgnRet = wnd->hrgnUpdate;
 141         }
 142         WIN_ReleaseDesktop();
 143         return hrgnRet;
 144     }
 145     WIN_ReleaseDesktop();
 146
 147     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 148         !(wnd->flags & WIN_NCACTIVATED) )
 149     {
 150         wnd->flags |= WIN_NCACTIVATED;
 151         uncFlags |= UNC_ENTIRE;
 152     }
 153
 154     /*
 155      * If the window's non-client area needs to be painted,
 156      */
 157     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 158          !WIN_HaveToDelayNCPAINT(wnd, uncFlags) )
 159     {
 160             RECT r2, r3;
 161
 162             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 163             GETCLIENTRECTW( wnd, r );
 164
 165             TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
 166                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 167             if( wnd->hrgnUpdate > 1 )
 168             {
 169                 /* Check if update rgn overlaps with nonclient area */
 170
 171                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 172                 UnionRect( &r3, &r2, &r );
 173                 if( r3.left != r.left || r3.top != r.top ||
 174                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 175                 {
 176                     /* crop hrgnUpdate, save old one in hClip - the only
 177                      * case that places a valid region handle in hClip */
 178
 179                     hClip = wnd->hrgnUpdate;
 180                     wnd->hrgnUpdate = REGION_CropRgn( hRgn, hClip, &r, NULL );
 181                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 182                 }
 183
 184                 if( uncFlags & UNC_CHECK )
 185                 {
 186                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 187                     if( IsRectEmpty( &r3 ) )
 188                     {
 189                         /* delete the update region since all invalid
 190                          * parts were in the nonclient area */
 191
 192                         DeleteObject( wnd->hrgnUpdate );
 193                         wnd->hrgnUpdate = 0;
 194                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 195                             QUEUE_DecPaintCount( wnd->hmemTaskQ );
 196
 197                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 198                     }
 199                 }
 200
 201                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 202             }
 203             else
 204             if( wnd->hrgnUpdate == 1 )/* entire window */
 205             {
 206                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 207                 if( uncFlags & UNC_REGION ) hrgnRet = 1;
 208                 uncFlags |= UNC_ENTIRE;
 209             }
 210     }
 211     else /* no WM_NCPAINT unless forced */
 212     {
 213         if( wnd->hrgnUpdate >  1 )
 214         {
 215 copyrgn:
 216             if( uncFlags & UNC_REGION )
 217                 hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
 218         }
 219         else
 220         if( wnd->hrgnUpdate == 1 && (uncFlags & UNC_UPDATE) )
 221         {
 222             GETCLIENTRECTW( wnd, r );
 223             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 224             if( uncFlags & UNC_REGION ) hrgnRet = 1;
 225         }
 226     }
 227
 228     if(!hClip && (uncFlags & UNC_ENTIRE) )
 229     {
 230         /* still don't do anything if there is no nonclient area */
 231         hClip = (memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 232     }
 233
 234     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 235     {
 236         if ( hClip == hrgnRet && hrgnRet > 1 ) {
 237             hClip = CreateRectRgn( 0, 0, 0, 0 );
 238             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 239         }
 240
 241         SendMessageA( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
 242         if( (hClip > 1) && (hClip != hRgn) && (hClip != hrgnRet) )
 243             DeleteObject( hClip );
 244         /*
 245          * Since all Window locks are suspended while processing the WM_NCPAINT
 246          * we want to make sure the window still exists before continuing.
 247          */
 248         if (!IsWindow(wnd->hwndSelf))
 249         {
 250           DeleteObject(hrgnRet);
 251           hrgnRet=0;
 252         }
 253     }
 254
 255     TRACE_(nonclient)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 256
 257     return hrgnRet;
 258 }
 259
 260
 261 /***********************************************************************
 262  *           BeginPaint16    (USER.39)
 263  */
 264 HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
 265 {
 266     BOOL bIcon;
 267     HRGN hrgnUpdate;
 268     RECT16 clipRect, clientRect;
 269     WND *wndPtr = WIN_FindWndPtr( hwnd );
 270     if (!wndPtr) return 0;
 271
 272     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
 273
 274     wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 275
 276     /* send WM_NCPAINT and make sure hrgnUpdate is a valid rgn handle */
 277     WIN_UpdateNCRgn( wndPtr, 0, UNC_UPDATE | UNC_IN_BEGINPAINT);
 278
 279     /*
 280      * Make sure the window is still a window. All window locks are suspended
 281      * when the WM_NCPAINT is sent.
 282      */
 283     if (!IsWindow(wndPtr->hwndSelf))
 284     {
 285         WIN_ReleaseWndPtr(wndPtr);
 286         return 0;
 287     }
 288
 289     if( ((hrgnUpdate = wndPtr->hrgnUpdate) != 0) || (wndPtr->flags & WIN_INTERNAL_PAINT))
 290         QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 291
 292     wndPtr->hrgnUpdate = 0;
 293     wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 294
 295     HideCaret( hwnd );
 296
 297     TRACE("hrgnUpdate = %04x, \n", hrgnUpdate);
 298
 299     if (GetClassWord16(wndPtr->hwndSelf, GCW_STYLE) & CS_PARENTDC)
 300     {
 301         /* Don't clip the output to the update region for CS_PARENTDC window */
 302         if( hrgnUpdate )
 303             DeleteObject(hrgnUpdate);
 304         lps->hdc = GetDCEx16( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
 305                               (bIcon ? DCX_WINDOW : 0) );
 306     }
 307     else
 308     {
 309         if( hrgnUpdate ) /* convert to client coordinates */
 310             OffsetRgn( hrgnUpdate, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 311                                    wndPtr->rectWindow.top - wndPtr->rectClient.top );
 312         lps->hdc = GetDCEx16(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
 313                              DCX_WINDOWPAINT | DCX_USESTYLE | (bIcon ? DCX_WINDOW : 0) );
 314         /* ReleaseDC() in EndPaint() will delete the region */
 315     }
 316
 317     TRACE("hdc = %04x\n", lps->hdc);
 318
 319     if (!lps->hdc)
 320     {
 321         WARN("GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
 322         WIN_ReleaseWndPtr(wndPtr);
 323         return 0;
 324     }
 325
 326     /* It is possible that the clip box is bigger than the window itself,
 327        if CS_PARENTDC flag is set. Windows never return a paint rect bigger
 328        than the window itself, so we need to intersect the cliprect with
 329        the window  */
 330
 331     GetClipBox16( lps->hdc, &clipRect );
 332     GetClientRect16( hwnd, &clientRect );
 333
 334     /* The rect obtained by GetClipBox is in logical, so make the client in logical to*/
 335     DPtoLP16(lps->hdc, (LPPOINT16) &clientRect, 2);
 336
 337     IntersectRect16(&lps->rcPaint, &clientRect, &clipRect);
 338
 339     TRACE("box = (%i,%i - %i,%i)\n", lps->rcPaint.left, lps->rcPaint.top,
 340                     lps->rcPaint.right, lps->rcPaint.bottom );
 341
 342     if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 343     {
 344         wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 345         lps->fErase = !SendMessage16(hwnd, (bIcon) ? WM_ICONERASEBKGND
 346                                                    : WM_ERASEBKGND,
 347                                      (WPARAM16)lps->hdc, 0 );
 348     }
 349     else lps->fErase = TRUE;
 350
 351     WIN_ReleaseWndPtr(wndPtr);
 352     return lps->hdc;
 353 }
 354
 355
 356 /***********************************************************************
 357  *           BeginPaint32    (USER32.10)
 358  */
 359 HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
 360 {
 361     PAINTSTRUCT16 ps;
 362
 363     BeginPaint16( hwnd, &ps );
 364     lps->hdc            = (HDC)ps.hdc;
 365     lps->fErase         = ps.fErase;
 366     lps->rcPaint.top    = ps.rcPaint.top;
 367     lps->rcPaint.left   = ps.rcPaint.left;
 368     lps->rcPaint.right  = ps.rcPaint.right;
 369     lps->rcPaint.bottom = ps.rcPaint.bottom;
 370     lps->fRestore       = ps.fRestore;
 371     lps->fIncUpdate     = ps.fIncUpdate;
 372     return lps->hdc;
 373 }
 374
 375
 376 /***********************************************************************
 377  *           EndPaint16    (USER.40)
 378  */
 379 BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
 380 {
 381     ReleaseDC16( hwnd, lps->hdc );
 382     ShowCaret( hwnd );
 383     return TRUE;
 384 }
 385
 386
 387 /***********************************************************************
 388  *           EndPaint32    (USER32.176)
 389  */
 390 BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
 391 {
 392     ReleaseDC( hwnd, lps->hdc );
 393     ShowCaret( hwnd );
 394     return TRUE;
 395 }
 396
 397
 398 /***********************************************************************
 399  *           FillWindow    (USER.324)
 400  */
 401 void WINAPI FillWindow16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
 402 {
 403     RECT16 rect;
 404     GetClientRect16( hwnd, &rect );
 405     DPtoLP16( hdc, (LPPOINT16)&rect, 2 );
 406     PaintRect16( hwndParent, hwnd, hdc, hbrush, &rect );
 407 }
 408
 409
 410 /***********************************************************************
 411  *           PAINT_GetControlBrush
 412  */
 413 static HBRUSH16 PAINT_GetControlBrush( HWND hParent, HWND hWnd, HDC16 hDC, UINT16 ctlType )
 414 {
 415     HBRUSH16 bkgBrush = (HBRUSH16)SendMessageA( hParent, WM_CTLCOLORMSGBOX + ctlType,
 416                                                              (WPARAM)hDC, (LPARAM)hWnd );
 417     if( !IsGDIObject16(bkgBrush) )
 418         bkgBrush = DEFWND_ControlColor( hDC, ctlType );
 419     return bkgBrush;
 420 }
 421
 422
 423 /***********************************************************************
 424  *           PaintRect    (USER.325)
 425  */
 426 void WINAPI PaintRect16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
 427                        HBRUSH16 hbrush, const RECT16 *rect)
 428 {
 429     if( hbrush <= CTLCOLOR_MAX )
 430     {
 431         if( hwndParent )
 432             hbrush = PAINT_GetControlBrush( hwndParent, hwnd, hdc, (UINT16)hbrush );
 433         else
 434             return;
 435     }
 436     if( hbrush )
 437         FillRect16( hdc, rect, hbrush );
 438 }
 439
 440
 441 /***********************************************************************
 442  *           GetControlBrush    (USER.326)
 443  */
 444 HBRUSH16 WINAPI GetControlBrush16( HWND16 hwnd, HDC16 hdc, UINT16 ctlType )
 445 {
 446     WND* wndPtr = WIN_FindWndPtr( hwnd );
 447     HBRUSH16 retvalue;
 448
 449     if((ctlType <= CTLCOLOR_MAX) && wndPtr )
 450     {
 451         WND* parent;
 452         if( wndPtr->dwStyle & WS_POPUP ) parent = WIN_LockWndPtr(wndPtr->owner);
 453         else parent = WIN_LockWndPtr(wndPtr->parent);
 454         if( !parent ) parent = wndPtr;
 455         retvalue = (HBRUSH16)PAINT_GetControlBrush( parent->hwndSelf, hwnd, hdc, ctlType );
 456         WIN_ReleaseWndPtr(parent);
 457         goto END;
 458     }
 459     retvalue = (HBRUSH16)0;
 460 END:
 461     WIN_ReleaseWndPtr(wndPtr);
 462     return retvalue;
 463 }
 464
 465
 466 /***********************************************************************
 467  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 468  *
 469  *  Validate the portions of parent that are covered by a validated child
 470  *  wndPtr = child
 471  */
 472 void  RDW_ValidateParent(WND *wndChild)
 473 {
 474     WND *wndParent = WIN_LockWndPtr(wndChild->parent);
 475     WND *wndDesktop = WIN_GetDesktop();
 476
 477     if ((wndParent) && (wndParent != wndDesktop) && !(wndParent->dwStyle & WS_CLIPCHILDREN))
 478     {
 479         HRGN hrg;
 480         if (wndChild->hrgnUpdate == 1 )
 481         {
 482             RECT r;
 483
 484             r.left = 0;
 485             r.top = 0;
 486             r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 487             r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 488
 489             hrg = CreateRectRgnIndirect( &r );
 490         }
 491         else
 492            hrg = wndChild->hrgnUpdate;
 493         if (wndParent->hrgnUpdate != 0)
 494         {
 495             POINT ptOffset;
 496             RECT rect, rectParent;
 497             if( wndParent->hrgnUpdate == 1 )
 498             {
 499                RECT r;
 500
 501                r.left = 0;
 502                r.top = 0;
 503                r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 504                r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 505
 506                wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 507             }
 508             /* we must offset the child region by the offset of the child rect in the parent */
 509             GetWindowRect(wndParent->hwndSelf, &rectParent);
 510             GetWindowRect(wndChild->hwndSelf, &rect);
 511             ptOffset.x = rect.left - rectParent.left;
 512             ptOffset.y = rect.top - rectParent.top;
 513             OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 514             CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
 515             OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 516         }
 517         if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 518     }
 519     WIN_ReleaseWndPtr(wndParent);
 520     WIN_ReleaseDesktop();
 521 }
 522
 523 /***********************************************************************
 524  *              RDW_UpdateRgns [RedrawWindow() helper]
 525  *
 526  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 527  *  regions of windows that overlap it. Also, manages internal paint flags.
 528  *
 529  *  NOTE: Walks the window tree so the caller must lock it.
 530  *        MUST preserve hRgn (can modify but then has to restore).
 531  */
 532 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 533 {
 534     /*
 535      * Called only when one of the following is set:
 536      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 537      */
 538
 539     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 540     BOOL bChildren =  ( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
 541                         && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 542     RECT r;
 543
 544     r.left = 0;
 545     r.top = 0;
 546     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 547     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 548
 549     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 550
 551     if( flags & RDW_INVALIDATE )
 552     {
 553         if( hRgn > 1 )
 554         {
 555             switch( wndPtr->hrgnUpdate )
 556             {
 557                 default:
 558                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 559                         /* fall through */
 560                 case 0:
 561                         wndPtr->hrgnUpdate = REGION_CropRgn( wndPtr->hrgnUpdate,
 562                                                              wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 563                                                              &r, NULL );
 564                         if( !bHadOne )
 565                         {
 566                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 567                             if( IsRectEmpty( &r ) )
 568                             {
 569                                 DeleteObject( wndPtr->hrgnUpdate );
 570                                 wndPtr->hrgnUpdate = 0;
 571                                 goto OUT;
 572                             }
 573                         }
 574                         break;
 575                 case 1: /* already an entire window */
 576                         break;
 577             }
 578         }
 579         else if( hRgn == 1 )
 580         {
 581             if( wndPtr->hrgnUpdate > 1 )
 582                 DeleteObject( wndPtr->hrgnUpdate );
 583             wndPtr->hrgnUpdate = 1;
 584         }
 585         else
 586             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 587
 588         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 589             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 590
 591         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 592         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 593         flags    |= RDW_FRAME;
 594     }
 595     else if( flags & RDW_VALIDATE )
 596     {
 597         if( wndPtr->hrgnUpdate )
 598         {
 599             if( hRgn > 1 )
 600             {
 601                 if( wndPtr->hrgnUpdate == 1 )
 602                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 603
 604                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 605                     == NULLREGION )
 606                     goto EMPTY;
 607             }
 608             else /* validate everything */
 609             {
 610                 if( wndPtr->hrgnUpdate > 1 )
 611                 {
 612 EMPTY:
 613                     DeleteObject( wndPtr->hrgnUpdate );
 614                 }
 615                 wndPtr->hrgnUpdate = 0;
 616             }
 617
 618             if( !wndPtr->hrgnUpdate )
 619             {
 620                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 621                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 622                     QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 623             }
 624         }
 625
 626         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 627         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 628
 629     }
 630
 631     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 632         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 633
 634     /* in/validate child windows that intersect with the region if it
 635      * is a valid handle. */
 636
 637     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 638     {
 639         if( hRgn > 1 && bChildren )
 640         {
 641             WND* wnd = wndPtr->child;
 642             POINT ptTotal, prevOrigin = {0,0};
 643             POINT ptClient;
 644
 645             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 646             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 647
 648             for( ptTotal.x = ptTotal.y = 0; wnd; wnd = wnd->next )
 649             {
 650                 if( wnd->dwStyle & WS_VISIBLE )
 651                 {
 652                     POINT ptOffset;
 653
 654                     r.left = wnd->rectWindow.left + ptClient.x;
 655                     r.right = wnd->rectWindow.right + ptClient.x;
 656                     r.top = wnd->rectWindow.top + ptClient.y;
 657                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 658
 659                     ptOffset.x = r.left - prevOrigin.x;
 660                     ptOffset.y = r.top - prevOrigin.y;
 661                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 662
 663                     if( RectInRegion( hRgn, &r ) )
 664                     {
 665                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 666                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 667                         prevOrigin.x = r.left + ptTotal.x;
 668                         prevOrigin.y = r.top + ptTotal.y;
 669                         ptTotal.x += ptOffset.x;
 670                         ptTotal.y += ptOffset.y;
 671                     }
 672                 }
 673             }
 674             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 675             bChildren = 0;
 676         }
 677     }
 678
 679     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 680
 681     if( bChildren )
 682     {
 683         WND* wnd;
 684         for( wnd = wndPtr->child; wnd; wnd = wnd->next )
 685              if( wnd->dwStyle & WS_VISIBLE )
 686                  RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 687     }
 688
 689 OUT:
 690
 691     /* Set/clear internal paint flag */
 692
 693     if (flags & RDW_INTERNALPAINT)
 694     {
 695         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 696             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 697         wndPtr->flags |= WIN_INTERNAL_PAINT;
 698     }
 699     else if (flags & RDW_NOINTERNALPAINT)
 700     {
 701         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 702             QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 703         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 704     }
 705 }
 706
 707 /***********************************************************************
 708  *           RDW_Paint [RedrawWindow() helper]
 709  *
 710  * Walks the window tree and paints/erases windows that have
 711  * nonzero update regions according to redraw flags. hrgn is a scratch
 712  * region passed down during recursion. Must not be 1.
 713  *
 714  */
 715 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 716 {
 717 /* NOTE: wndPtr is locked by caller.
 718  *
 719  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 720  * SendMessage() calls. This is a comment inside DefWindowProc() source
 721  * from 16-bit SDK:
 722  *
 723  *   This message avoids lots of inter-app message traffic
 724  *   by switching to the other task and continuing the
 725  *   recursion there.
 726  *
 727  * wParam         = flags
 728  * LOWORD(lParam) = hrgnClip
 729  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 730  *
 731  */
 732     HDC  hDC;
 733     HWND hWnd = wndPtr->hwndSelf;
 734     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
 735
 736       /* Erase/update the window itself ... */
 737
 738     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 739
 740     /*
 741      * Check if this window should delay it's processing of WM_NCPAINT.
 742      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 743      */
 744     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr, 0) )
 745         ex |= RDW_EX_DELAY_NCPAINT;
 746
 747     if (flags & RDW_UPDATENOW)
 748     {
 749         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 750             SendMessage16( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 751     }
 752     else if ((flags & RDW_ERASENOW) || (ex & RDW_EX_TOPFRAME))
 753     {
 754         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 755         HRGN hrgnRet;
 756
 757         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 758                                   hrgn,
 759                                   UNC_REGION | UNC_CHECK |
 760                                   ((ex & RDW_EX_TOPFRAME) ? UNC_ENTIRE : 0) |
 761                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 762
 763         if( hrgnRet )
 764         {
 765             if( hrgnRet > 1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 766             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 767             {
 768                 if( bIcon ) dcx |= DCX_WINDOW;
 769                 else
 770                 if( hrgnRet )
 771                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 772                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 773                 else
 774                     dcx &= ~DCX_INTERSECTRGN;
 775                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 776                 {
 777                     if (SendMessage16( hWnd, (bIcon) ? WM_ICONERASEBKGND
 778                                        : WM_ERASEBKGND, (WPARAM16)hDC, 0 ))
 779                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 780                     ReleaseDC( hWnd, hDC );
 781                 }
 782             }
 783         }
 784     }
 785
 786     if( !IsWindow(hWnd) ) return hrgn;
 787     ex &= ~RDW_EX_TOPFRAME;
 788
 789       /* ... and its child windows */
 790
 791     if( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
 792         && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 793     {
 794         WND** list, **ppWnd;
 795
 796         if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 797         {
 798             wndPtr = NULL;
 799             for (ppWnd = list; *ppWnd; ppWnd++)
 800             {
 801                 WIN_UpdateWndPtr(&wndPtr,*ppWnd);
 802                 if (!IsWindow(wndPtr->hwndSelf)) continue;
 803                     if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 804                          (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 805                         hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 806             }
 807             WIN_ReleaseWndPtr(wndPtr);
 808             WIN_ReleaseWinArray(list);
 809         }
 810     }
 811
 812     return hrgn;
 813 }
 814
 815 /***********************************************************************
 816  *           PAINT_RedrawWindow
 817  *
 818  */
 819 BOOL PAINT_RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 820                            HRGN hrgnUpdate, UINT flags, UINT ex )
 821 {
 822     HRGN hRgn = 0;
 823     RECT r, r2;
 824     POINT pt;
 825     WND* wndPtr;
 826
 827     if (!hwnd) hwnd = GetDesktopWindow();
 828     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 829
 830     /* check if the window or its parents are visible/not minimized */
 831
 832     if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) ) )
 833     {
 834         WIN_ReleaseWndPtr(wndPtr);
 835         return TRUE;
 836     }
 837
 838     if (TRACE_ON(win))
 839     {
 840         if( hrgnUpdate )
 841         {
 842             GetRgnBox( hrgnUpdate, &r );
 843             TRACE( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x, exflags=%04x\n",
 844                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags, ex);
 845         }
 846         else
 847         {
 848             if( rectUpdate )
 849                 r = *rectUpdate;
 850             else
 851                 SetRectEmpty( &r );
 852             TRACE( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x, exflags=%04x\n",
 853                         hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 854                         r.top, r.right, r.bottom, hrgnUpdate, flags, ex );
 855         }
 856     }
 857
 858     /* prepare an update region in window coordinates */
 859
 860     if( flags & RDW_FRAME )
 861         r = wndPtr->rectWindow;
 862     else
 863         r = wndPtr->rectClient;
 864
 865     if( ex & RDW_EX_XYWINDOW )
 866     {
 867         pt.x = pt.y = 0;
 868         OffsetRect( &r, -wndPtr->rectWindow.left, -wndPtr->rectWindow.top );
 869     }
 870     else
 871     {
 872         pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 873         pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 874         OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 875     }
 876
 877     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 878     {
 879         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 880          * and put a new region straight into wndPtr->hrgnUpdate
 881          * so that RDW_UpdateRgns() won't have to do any extra work.
 882          */
 883
 884         if( hrgnUpdate )
 885         {
 886             if( wndPtr->hrgnUpdate )
 887                 hRgn = REGION_CropRgn( 0, hrgnUpdate, NULL, &pt );
 888             else
 889                 wndPtr->hrgnUpdate = REGION_CropRgn( 0, hrgnUpdate, &r, &pt );
 890         }
 891         else if( rectUpdate )
 892         {
 893             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 894             OffsetRect( &r2, pt.x, pt.y );
 895
 896 rect2i:
 897             if( wndPtr->hrgnUpdate == 0 )
 898                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 899             else
 900                 hRgn = CreateRectRgnIndirect( &r2 );
 901         }
 902         else /* entire window or client depending on RDW_FRAME */
 903         {
 904             if( flags & RDW_FRAME )
 905             {
 906                 if( wndPtr->hrgnUpdate )
 907                     DeleteObject( wndPtr->hrgnUpdate );
 908                 wndPtr->hrgnUpdate = 1;
 909             }
 910             else
 911             {
 912                 GETCLIENTRECTW( wndPtr, r2 );
 913                 goto rect2i;
 914             }
 915         }
 916     }
 917     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 918     {
 919         /* In this we cannot leave with zero hRgn */
 920         if( hrgnUpdate )
 921         {
 922             hRgn = REGION_CropRgn( hRgn, hrgnUpdate,  &r, &pt );
 923             GetRgnBox( hRgn, &r2 );
 924             if( IsRectEmpty( &r2 ) ) goto END;
 925         }
 926         else if( rectUpdate )
 927         {
 928             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 929                 OffsetRect( &r2, pt.x, pt.y );
 930 rect2v:
 931             hRgn = CreateRectRgnIndirect( &r2 );
 932         }
 933         else /* entire window or client depending on RDW_FRAME */
 934         {
 935             if( flags & RDW_FRAME )
 936                 hRgn = 1;
 937             else
 938             {
 939                 GETCLIENTRECTW( wndPtr, r2 );
 940                 goto rect2v;
 941             }
 942         }
 943     }
 944
 945     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 946
 947     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 948
 949     /* Erase/update windows, from now on hRgn is a scratch region */
 950
 951     hRgn = RDW_Paint( wndPtr, (hRgn == 1) ? 0 : hRgn, flags, ex );
 952
 953 END:
 954     if( hRgn > 1 && (hRgn != hrgnUpdate) )
 955         DeleteObject(hRgn );
 956     WIN_ReleaseWndPtr(wndPtr);
 957     return TRUE;
 958 }
 959
 960
 961 /***********************************************************************
 962  *           RedrawWindow32    (USER32.426)
 963  */
 964 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 965                               HRGN hrgnUpdate, UINT flags )
 966 {
 967     return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
 968 }
 969
 970
 971 /***********************************************************************
 972  *           RedrawWindow16    (USER.290)
 973  */
 974 BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
 975                               HRGN16 hrgnUpdate, UINT16 flags )
 976 {
 977     if (rectUpdate)
 978     {
 979         RECT r;
 980         CONV_RECT16TO32( rectUpdate, &r );
 981         return (BOOL16)RedrawWindow( (HWND)hwnd, &r, hrgnUpdate, flags );
 982     }
 983     return (BOOL16)PAINT_RedrawWindow( (HWND)hwnd, NULL,
 984                                        (HRGN)hrgnUpdate, flags, 0 );
 985 }
 986
 987
 988 /***********************************************************************
 989  *           UpdateWindow16   (USER.124)
 990  */
 991 void WINAPI UpdateWindow16( HWND16 hwnd )
 992 {
 993     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 994 }
 995
 996 /***********************************************************************
 997  *           UpdateWindow32   (USER32.567)
 998  */
 999 void WINAPI UpdateWindow( HWND hwnd )
1000 {
1001     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
1002 }
1003
1004 /***********************************************************************
1005  *           InvalidateRgn16   (USER.126)
1006  */
1007 void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
1008 {
1009     PAINT_RedrawWindow((HWND)hwnd, NULL, (HRGN)hrgn,
1010                        RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1011 }
1012
1013
1014 /***********************************************************************
1015  *           InvalidateRgn32   (USER32.329)
1016  */
1017 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
1018 {
1019     return PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1020 }
1021
1022
1023 /***********************************************************************
1024  *           InvalidateRect16   (USER.125)
1025  */
1026 void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
1027 {
1028     RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
1029 }
1030
1031
1032 /***********************************************************************
1033  *           InvalidateRect32   (USER32.328)
1034  */
1035 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
1036 {
1037     return PAINT_RedrawWindow( hwnd, rect, 0,
1038                                RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1039 }
1040
1041
1042 /***********************************************************************
1043  *           ValidateRgn16   (USER.128)
1044  */
1045 void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
1046 {
1047     PAINT_RedrawWindow( (HWND)hwnd, NULL, (HRGN)hrgn,
1048                         RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1049 }
1050
1051
1052 /***********************************************************************
1053  *           ValidateRgn32   (USER32.572)
1054  */
1055 void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
1056 {
1057     PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1058 }
1059
1060
1061 /***********************************************************************
1062  *           ValidateRect16   (USER.127)
1063  */
1064 void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
1065 {
1066     RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
1067 }
1068
1069
1070 /***********************************************************************
1071  *           ValidateRect32   (USER32.571)
1072  */
1073 void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
1074 {
1075     PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1076 }
1077
1078
1079 /***********************************************************************
1080  *           GetUpdateRect16   (USER.190)
1081  */
1082 BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
1083 {
1084     RECT r;
1085     BOOL16 ret;
1086
1087     if (!rect) return GetUpdateRect( hwnd, NULL, erase );
1088     ret = GetUpdateRect( hwnd, &r, erase );
1089     CONV_RECT32TO16( &r, rect );
1090     return ret;
1091 }
1092
1093
1094 /***********************************************************************
1095  *           GetUpdateRect32   (USER32.297)
1096  */
1097 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
1098 {
1099     BOOL retvalue;
1100     WND * wndPtr = WIN_FindWndPtr( hwnd );
1101     if (!wndPtr) return FALSE;
1102
1103     if (rect)
1104     {
1105         if (wndPtr->hrgnUpdate > 1)
1106         {
1107             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
1108             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
1109             {
1110                 retvalue = FALSE;
1111                 goto END;
1112             }
1113             GetRgnBox( hrgn, rect );
1114             DeleteObject( hrgn );
1115             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
1116             {
1117                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
1118                 {
1119                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
1120                 }
1121             }
1122         }
1123         else
1124         if( wndPtr->hrgnUpdate == 1 )
1125         {
1126             GetClientRect( hwnd, rect );
1127             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
1128         }
1129         else
1130             SetRectEmpty( rect );
1131     }
1132     retvalue = (wndPtr->hrgnUpdate >= 1);
1133 END:
1134     WIN_ReleaseWndPtr(wndPtr);
1135     return retvalue;
1136 }
1137
1138
1139 /***********************************************************************
1140  *           GetUpdateRgn16   (USER.237)
1141  */
1142 INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
1143 {
1144     return GetUpdateRgn( hwnd, hrgn, erase );
1145 }
1146
1147
1148 /***********************************************************************
1149  *           GetUpdateRgn    (USER32.298)
1150  */
1151 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
1152 {
1153     INT retval;
1154     WND * wndPtr = WIN_FindWndPtr( hwnd );
1155     if (!wndPtr) return ERROR;
1156
1157     if (wndPtr->hrgnUpdate == 0)
1158     {
1159         SetRectRgn( hrgn, 0, 0, 0, 0 );
1160         retval = NULLREGION;
1161         goto END;
1162     }
1163     else
1164     if (wndPtr->hrgnUpdate == 1)
1165     {
1166         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
1167                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
1168         retval = SIMPLEREGION;
1169     }
1170     else
1171     {
1172         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
1173         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1174                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
1175     }
1176     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
1177 END:
1178     WIN_ReleaseWndPtr(wndPtr);
1179     return retval;
1180 }
1181
1182
1183 /***********************************************************************
1184  *           ExcludeUpdateRgn16   (USER.238)
1185  */
1186 INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
1187 {
1188     return ExcludeUpdateRgn( hdc, hwnd );
1189 }
1190
1191
1192 /***********************************************************************
1193  *           ExcludeUpdateRgn32   (USER32.195)
1194  */
1195 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
1196 {
1197     RECT rect;
1198     WND * wndPtr;
1199
1200     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
1201
1202     if (wndPtr->hrgnUpdate)
1203     {
1204         INT ret;
1205         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
1206                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
1207                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
1208                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
1209         if( wndPtr->hrgnUpdate > 1 )
1210         {
1211             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
1212             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1213                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
1214         }
1215
1216         /* do ugly coordinate translations in dce.c */
1217
1218         ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
1219         DeleteObject( hrgn );
1220         WIN_ReleaseWndPtr(wndPtr);
1221         return ret;
1222     }
1223     WIN_ReleaseWndPtr(wndPtr);
1224     return GetClipBox( hdc, &rect );
1225 }
1226
1227
1228
1229 /***********************************************************************
1230  *           FillRect16    (USER.81)
1231  */
1232 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1233 {
1234     HBRUSH16 prevBrush;
1235
1236     /* coordinates are logical so we cannot fast-check 'rect',
1237      * it will be done later in the PatBlt().
1238      */
1239
1240     if (!(prevBrush = SelectObject16( hdc, hbrush ))) return 0;
1241     PatBlt( hdc, rect->left, rect->top,
1242               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1243     SelectObject16( hdc, prevBrush );
1244     return 1;
1245 }
1246
1247
1248 /***********************************************************************
1249  *           FillRect    (USER32.197)
1250  */
1251 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1252 {
1253     HBRUSH prevBrush;
1254
1255     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1256     PatBlt( hdc, rect->left, rect->top,
1257               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1258     SelectObject( hdc, prevBrush );
1259     return 1;
1260 }
1261
1262
1263 /***********************************************************************
1264  *           InvertRect16    (USER.82)
1265  */
1266 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1267 {
1268     PatBlt( hdc, rect->left, rect->top,
1269               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1270 }
1271
1272
1273 /***********************************************************************
1274  *           InvertRect    (USER32.330)
1275  */
1276 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1277 {
1278     return PatBlt( hdc, rect->left, rect->top,
1279                      rect->right - rect->left, rect->bottom - rect->top,
1280                      DSTINVERT );
1281 }
1282
1283
1284 /***********************************************************************
1285  *           FrameRect    (USER32.203)
1286  */
1287 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1288 {
1289     HBRUSH prevBrush;
1290     RECT r = *rect;
1291
1292     LPtoDP(hdc, (POINT *)&r, 2);
1293
1294     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1295     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1296
1297     PatBlt( hdc, r.left, r.top, 1,
1298               r.bottom - r.top, PATCOPY );
1299     PatBlt( hdc, r.right - 1, r.top, 1,
1300               r.bottom - r.top, PATCOPY );
1301     PatBlt( hdc, r.left, r.top,
1302               r.right - r.left, 1, PATCOPY );
1303     PatBlt( hdc, r.left, r.bottom - 1,
1304               r.right - r.left, 1, PATCOPY );
1305
1306     SelectObject( hdc, prevBrush );
1307     return TRUE;
1308 }
1309
1310
1311 /***********************************************************************
1312  *           FrameRect16    (USER.83)
1313  */
1314 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1315 {
1316     RECT rect;
1317     CONV_RECT16TO32( rect16, &rect );
1318     return FrameRect( hdc, &rect, hbrush );
1319 }
1320
1321
1322 /***********************************************************************
1323  *           DrawFocusRect16    (USER.466)
1324  */
1325 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1326 {
1327     RECT rect32;
1328     CONV_RECT16TO32( rc, &rect32 );
1329     DrawFocusRect( hdc, &rect32 );
1330 }
1331
1332
1333 /***********************************************************************
1334  *           DrawFocusRect    (USER32.156)
1335  *
1336  * FIXME: PatBlt(PATINVERT) with background brush.
1337  */
1338 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1339 {
1340     HBRUSH hOldBrush;
1341     HPEN hOldPen, hNewPen;
1342     INT oldDrawMode, oldBkMode;
1343
1344     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1345     hNewPen = CreatePen(PS_DOT, 1, GetSysColor(COLOR_WINDOWTEXT));
1346     hOldPen = SelectObject(hdc, hNewPen);
1347     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1348     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1349
1350     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1351
1352     SetBkMode(hdc, oldBkMode);
1353     SetROP2(hdc, oldDrawMode);
1354     SelectObject(hdc, hOldPen);
1355     DeleteObject(hNewPen);
1356     SelectObject(hdc, hOldBrush);
1357
1358     return TRUE;
1359 }
1360
1361 /**********************************************************************
1362  *          DrawAnimatedRects16  (USER.448)
1363  */
1364 BOOL16 WINAPI DrawAnimatedRects16( HWND16 hwnd, INT16 idAni,
1365                                    const RECT16* lprcFrom,
1366                                    const RECT16* lprcTo )
1367 {
1368     RECT rcFrom32, rcTo32;
1369
1370     rcFrom32.left       = (INT)lprcFrom->left;
1371     rcFrom32.top        = (INT)lprcFrom->top;
1372     rcFrom32.right      = (INT)lprcFrom->right;
1373     rcFrom32.bottom     = (INT)lprcFrom->bottom;
1374
1375     rcTo32.left         = (INT)lprcTo->left;
1376     rcTo32.top          = (INT)lprcTo->top;
1377     rcTo32.right        = (INT)lprcTo->right;
1378     rcTo32.bottom       = (INT)lprcTo->bottom;
1379
1380     return DrawAnimatedRects((HWND)hwnd, (INT)idAni, &rcFrom32, &rcTo32);
1381 }
1382
1383
1384 /**********************************************************************
1385  *          DrawAnimatedRects  (USER32.153)
1386  */
1387 BOOL WINAPI DrawAnimatedRects( HWND hwnd, int idAni,
1388                                    const RECT* lprcFrom,
1389                                    const RECT* lprcTo )
1390 {
1391     FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1392     return TRUE;
1393 }
1394
1395
1396 /**********************************************************************
1397  *          PAINTING_DrawStateJam
1398  *
1399  * Jams in the requested type in the dc
1400  */
1401 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1402                                     DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1403                                     LPRECT rc, UINT dtflags,
1404                                     BOOL unicode, BOOL _32bit)
1405 {
1406     HDC memdc;
1407     HBITMAP hbmsave;
1408     BOOL retval;
1409     INT cx = rc->right - rc->left;
1410     INT cy = rc->bottom - rc->top;
1411
1412     switch(opcode)
1413     {
1414     case DST_TEXT:
1415     case DST_PREFIXTEXT:
1416         if(unicode)
1417             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1418         else if(_32bit)
1419             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1420         else
1421             return DrawTextA(hdc, (LPSTR)PTR_SEG_TO_LIN(lp), (INT)wp, rc, dtflags);
1422
1423     case DST_ICON:
1424         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1425
1426     case DST_BITMAP:
1427         memdc = CreateCompatibleDC(hdc);
1428         if(!memdc) return FALSE;
1429         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1430         if(!hbmsave)
1431         {
1432             DeleteDC(memdc);
1433             return FALSE;
1434         }
1435         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1436         SelectObject(memdc, hbmsave);
1437         DeleteDC(memdc);
1438         return retval;
1439
1440     case DST_COMPLEX:
1441         if(func)
1442             if(_32bit)
1443                 return func(hdc, lp, wp, cx, cy);
1444             else
1445                 return (BOOL)((DRAWSTATEPROC16)func)((HDC16)hdc, (LPARAM)lp, (WPARAM16)wp, (INT16)cx, (INT16)cy);
1446         else
1447             return FALSE;
1448     }
1449     return FALSE;
1450 }
1451
1452 /**********************************************************************
1453  *      PAINTING_DrawState()
1454  */
1455 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr,
1456                                    DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1457                                    INT x, INT y, INT cx, INT cy,
1458                                    UINT flags, BOOL unicode, BOOL _32bit)
1459 {
1460     HBITMAP hbm, hbmsave;
1461     HFONT hfsave;
1462     HBRUSH hbsave;
1463     HDC memdc;
1464     RECT rc;
1465     UINT dtflags = DT_NOCLIP;
1466     COLORREF fg, bg;
1467     UINT opcode = flags & 0xf;
1468     INT len = wp;
1469     BOOL retval, tmp;
1470
1471     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1472     {
1473         if(unicode)
1474             len = lstrlenW((LPWSTR)lp);
1475         else if(_32bit)
1476             len = lstrlenA((LPSTR)lp);
1477         else
1478             len = lstrlenA((LPSTR)PTR_SEG_TO_LIN(lp));
1479     }
1480
1481     /* Find out what size the image has if not given by caller */
1482     if(!cx || !cy)
1483     {
1484         SIZE s;
1485         CURSORICONINFO *ici;
1486         BITMAP bm;
1487
1488         switch(opcode)
1489         {
1490         case DST_TEXT:
1491         case DST_PREFIXTEXT:
1492             if(unicode)
1493                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1494             else if(_32bit)
1495                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1496             else
1497                 retval = GetTextExtentPoint32A(hdc, PTR_SEG_TO_LIN(lp), len, &s);
1498             if(!retval) return FALSE;
1499             break;
1500
1501         case DST_ICON:
1502             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1503             if(!ici) return FALSE;
1504             s.cx = ici->nWidth;
1505             s.cy = ici->nHeight;
1506             GlobalUnlock16((HGLOBAL16)lp);
1507             break;
1508
1509         case DST_BITMAP:
1510             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1511                 return FALSE;
1512             s.cx = bm.bmWidth;
1513             s.cy = bm.bmHeight;
1514             break;
1515
1516         case DST_COMPLEX: /* cx and cy must be set in this mode */
1517             return FALSE;
1518         }
1519
1520         if(!cx) cx = s.cx;
1521         if(!cy) cy = s.cy;
1522     }
1523
1524     rc.left   = x;
1525     rc.top    = y;
1526     rc.right  = x + cx;
1527     rc.bottom = y + cy;
1528
1529     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1530         dtflags |= DT_RIGHT;
1531     if(opcode == DST_TEXT)
1532         dtflags |= DT_NOPREFIX;
1533
1534     /* For DSS_NORMAL we just jam in the image and return */
1535     if((flags & 0x7ff0) == DSS_NORMAL)
1536     {
1537         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode, _32bit);
1538     }
1539
1540     /* For all other states we need to convert the image to B/W in a local bitmap */
1541     /* before it is displayed */
1542     fg = SetTextColor(hdc, RGB(0, 0, 0));
1543     bg = SetBkColor(hdc, RGB(255, 255, 255));
1544     hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
1545     memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
1546     retval = FALSE; /* assume failure */
1547
1548     /* From here on we must use "goto cleanup" when something goes wrong */
1549     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1550     if(!hbm) goto cleanup;
1551     memdc   = CreateCompatibleDC(hdc);
1552     if(!memdc) goto cleanup;
1553     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1554     if(!hbmsave) goto cleanup;
1555     rc.left = rc.top = 0;
1556     rc.right = cx;
1557     rc.bottom = cy;
1558     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1559     SetBkColor(memdc, RGB(255, 255, 255));
1560     SetTextColor(memdc, RGB(0, 0, 0));
1561     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1562     if(!hfsave && (opcode == DST_TEXT || opcode == DST_PREFIXTEXT)) goto cleanup;
1563     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode, _32bit);
1564     if(hfsave) SelectObject(memdc, hfsave);
1565     if(!tmp) goto cleanup;
1566
1567     /* These states cause the image to be dithered */
1568     if(flags & (DSS_UNION|DSS_DISABLED))
1569     {
1570         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1571         if(!hbsave) goto cleanup;
1572         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1573         if(hbsave) SelectObject(memdc, hbsave);
1574         if(!tmp) goto cleanup;
1575     }
1576
1577     hbsave = (HBRUSH)SelectObject(hdc, hbr ? hbr : GetStockObject(WHITE_BRUSH));
1578     if(!hbsave) goto cleanup;
1579
1580     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1581
1582     /* DSS_DEFAULT makes the image boldface */
1583     if(flags & DSS_DEFAULT)
1584     {
1585         if(!BitBlt(hdc, x+1, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1586     }
1587
1588     retval = TRUE; /* We succeeded */
1589
1590 cleanup:
1591     SetTextColor(hdc, fg);
1592     SetBkColor(hdc, bg);
1593
1594     if(hbsave)  SelectObject(hdc, hbsave);
1595     if(hbmsave) SelectObject(memdc, hbmsave);
1596     if(hbm)     DeleteObject(hbm);
1597     if(memdc)   DeleteDC(memdc);
1598
1599     return retval;
1600 }
1601
1602 /**********************************************************************
1603  *      DrawStateA()   (USER32.162)
1604  */
1605 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1606                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1607                    INT x, INT y, INT cx, INT cy, UINT flags)
1608 {
1609     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE, TRUE);
1610 }
1611
1612 /**********************************************************************
1613  *      DrawStateW()   (USER32.163)
1614  */
1615 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1616                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1617                    INT x, INT y, INT cx, INT cy, UINT flags)
1618 {
1619     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE, TRUE);
1620 }
1621
1622 /**********************************************************************
1623  *      DrawState16()   (USER.449)
1624  */
1625 BOOL16 WINAPI DrawState16(HDC16 hdc, HBRUSH16 hbr,
1626                    DRAWSTATEPROC16 func, LPARAM ldata, WPARAM16 wdata,
1627                    INT16 x, INT16 y, INT16 cx, INT16 cy, UINT16 flags)
1628 {
1629     return PAINTING_DrawState(hdc, hbr, (DRAWSTATEPROC)func, ldata, wdata, x, y, cx, cy, flags, FALSE, FALSE);
1630 }
1631
1632