windows/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1999 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <string.h>
  23 #include "windef.h"
  24 #include "wingdi.h"
  25 #include "wine/winuser16.h"
  26 #include "wownt32.h"
  27 #include "wine/unicode.h"
  28 #include "wine/server.h"
  29 #include "gdi.h"
  30 #include "user.h"
  31 #include "win.h"
  32 #include "queue.h"
  33 #include "dce.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(win);
  37 WINE_DECLARE_DEBUG_CHANNEL(nonclient);
  38
  39 /* client rect in window coordinates */
  40
  41 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  42                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  43                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  44                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  45
  46   /* PAINT_RedrawWindow() control flags */
  47 #define RDW_EX_DELAY_NCPAINT    0x0020
  48
  49   /* WIN_UpdateNCRgn() flags */
  50 #define UNC_CHECK               0x0001
  51 #define UNC_ENTIRE              0x0002
  52 #define UNC_REGION              0x0004
  53 #define UNC_UPDATE              0x0008
  54 #define UNC_DELAY_NCPAINT       0x0010
  55 #define UNC_IN_BEGINPAINT       0x0020
  56
  57   /* Last COLOR id */
  58 #define COLOR_MAX   COLOR_GRADIENTINACTIVECAPTION
  59
  60 HPALETTE (WINAPI *pfnGDISelectPalette)(HDC hdc, HPALETTE hpal, WORD bkgnd ) = NULL;
  61 UINT (WINAPI *pfnGDIRealizePalette)(HDC hdc) = NULL;
  62
  63 /* ### start build ### */
  64 extern WORD CALLBACK PAINTING_CallTo16_word_wlwww(DRAWSTATEPROC16,WORD,LONG,WORD,WORD,WORD);
  65 /* ### stop build ### */
  66
  67 struct draw_state_info
  68 {
  69     DRAWSTATEPROC16 proc;
  70     LPARAM          param;
  71 };
  72
  73 /* callback for 16-bit DrawState functions */
  74 static BOOL CALLBACK draw_state_callback( HDC hdc, LPARAM lparam, WPARAM wparam, int cx, int cy )
  75 {
  76     const struct draw_state_info *info = (struct draw_state_info *)lparam;
  77     return PAINTING_CallTo16_word_wlwww( info->proc, HDC_16(hdc), info->param, wparam, cx, cy );
  78 }
  79
  80
  81 /***********************************************************************
  82  *           add_paint_count
  83  *
  84  * Add an increment (normally 1 or -1) to the current paint count of a window.
  85  */
  86 static void add_paint_count( HWND hwnd, int incr )
  87 {
  88     SERVER_START_REQ( inc_window_paint_count )
  89     {
  90         req->handle = hwnd;
  91         req->incr   = incr;
  92         wine_server_call( req );
  93     }
  94     SERVER_END_REQ;
  95 }
  96
  97
  98 /***********************************************************************
  99  *           crop_rgn
 100  *
 101  * hSrc:        Region to crop.
 102  * lpRect:      Clipping rectangle.
 103  *
 104  * hDst: Region to hold the result (a new region is created if it's 0).
 105  *       Allowed to be the same region as hSrc in which case everything
 106  *       will be done in place, with no memory reallocations.
 107  *
 108  * Returns: hDst if success, 0 otherwise.
 109  */
 110 static HRGN crop_rgn( HRGN hDst, HRGN hSrc, const RECT *rect )
 111 {
 112     HRGN h = CreateRectRgnIndirect( rect );
 113     if (hDst == 0) hDst = h;
 114     CombineRgn( hDst, hSrc, h, RGN_AND );
 115     if (hDst != h) DeleteObject( h );
 116     return hDst;
 117 }
 118
 119
 120 /***********************************************************************
 121  *           WIN_HaveToDelayNCPAINT
 122  *
 123  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
 124  * is generated as soon as a region intersecting the non-client area
 125  * of a window is invalidated.
 126  *
 127  * This technique will work fine for all windows whose parents
 128  * have the WS_CLIPCHILDREN style. When the parents have that style,
 129  * they are not going to override the contents of their children.
 130  * However, when the parent doesn't have that style, Windows relies
 131  * on a "painter's algorithm" to display the contents of the windows.
 132  * That is, windows are painted from back to front. This includes the
 133  * non-client area.
 134  *
 135  * This method looks at the current state of a window to determine
 136  * if the sending of the WM_NCPAINT message should be delayed until
 137  * the BeginPaint call.
 138  *
 139  * PARAMS:
 140  *   wndPtr   - A Locked window pointer to the window we're
 141  *              examining.
 142  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
 143  *              function. This is a shortcut for the cases when
 144  *              we already know when to avoid scanning all the
 145  *              parents of a window. If you already know that this
 146  *              window's NCPAINT should be delayed, set the
 147  *              UNC_DELAY_NCPAINT flag for this parameter.
 148  *
 149  *              This shortcut behavior is implemented in the
 150  *              RDW_Paint() method.
 151  *
 152  */
 153 static BOOL WIN_HaveToDelayNCPAINT( HWND hwnd, UINT uncFlags)
 154 {
 155   /*
 156    * Test the shortcut first. (duh)
 157    */
 158   if (uncFlags & UNC_DELAY_NCPAINT)
 159     return TRUE;
 160
 161   /*
 162    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
 163    * method only. This is another shortcut to avoid going
 164    * up the parent's chain of the window to finally
 165    * figure-out that none of them has an invalid region.
 166    */
 167   if (uncFlags & UNC_IN_BEGINPAINT)
 168     return FALSE;
 169
 170   /*
 171    * Scan all the parents of this window to find a window
 172    * that doesn't have the WS_CLIPCHILDREN style and that
 173    * has an invalid region.
 174    */
 175   while ((hwnd = GetAncestor( hwnd, GA_PARENT )))
 176   {
 177       WND* parentWnd = WIN_FindWndPtr( hwnd );
 178       if (parentWnd && !(parentWnd->dwStyle & WS_CLIPCHILDREN) && parentWnd->hrgnUpdate)
 179       {
 180           WIN_ReleaseWndPtr( parentWnd );
 181           return TRUE;
 182       }
 183       WIN_ReleaseWndPtr( parentWnd );
 184   }
 185   return FALSE;
 186 }
 187
 188 /***********************************************************************
 189  *           WIN_UpdateNCRgn
 190  *
 191  *  Things to do:
 192  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 193  *      Crop hrgnUpdate to a client rect, especially if it 1.
 194  *      If UNC_REGION is set return update region for the client rect.
 195  *
 196  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 197  *        The trick is that when the returned region handle may be different from hRgn.
 198  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 199  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 200  *        a DC without extra clipping region.
 201  */
 202 static HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 203 {
 204     RECT  r;
 205     HRGN  hClip = 0;
 206     HRGN  hrgnRet = 0;
 207
 208     TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
 209                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 210
 211     /* desktop window doesn't have a nonclient area */
 212     if(wnd->hwndSelf == GetDesktopWindow())
 213     {
 214         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 215         if( wnd->hrgnUpdate > (HRGN)1 )
 216         {
 217             if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 218             CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 219             hrgnRet = hRgn;
 220         }
 221         else
 222         {
 223             hrgnRet = wnd->hrgnUpdate;
 224         }
 225         return hrgnRet;
 226     }
 227
 228     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 229         !(wnd->flags & WIN_NCACTIVATED) )
 230     {
 231         wnd->flags |= WIN_NCACTIVATED;
 232         uncFlags |= UNC_ENTIRE;
 233     }
 234
 235     /*
 236      * If the window's non-client area needs to be painted,
 237      */
 238     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 239          !WIN_HaveToDelayNCPAINT(wnd->hwndSelf, uncFlags) )
 240     {
 241             RECT r2, r3;
 242
 243             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 244             GETCLIENTRECTW( wnd, r );
 245
 246             TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
 247                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 248             if( wnd->hrgnUpdate > (HRGN)1 )
 249             {
 250                 /* Check if update rgn overlaps with nonclient area */
 251
 252                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 253                 UnionRect( &r3, &r2, &r );
 254                 if( r3.left != r.left || r3.top != r.top ||
 255                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 256                 {
 257                     /* crop hrgnUpdate, save old one in hClip - the only
 258                      * case that places a valid region handle in hClip */
 259
 260                     hClip = wnd->hrgnUpdate;
 261                     wnd->hrgnUpdate = crop_rgn( hRgn, hClip, &r );
 262                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 263                 }
 264
 265                 if( uncFlags & UNC_CHECK )
 266                 {
 267                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 268                     if( IsRectEmpty( &r3 ) )
 269                     {
 270                         /* delete the update region since all invalid
 271                          * parts were in the nonclient area */
 272
 273                         DeleteObject( wnd->hrgnUpdate );
 274                         wnd->hrgnUpdate = 0;
 275                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 276                             add_paint_count( wnd->hwndSelf, -1 );
 277
 278                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 279                     }
 280                 }
 281
 282                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 283             }
 284             else
 285             if( wnd->hrgnUpdate == (HRGN)1 )/* entire window */
 286             {
 287                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 288                 if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1;
 289                 uncFlags |= UNC_ENTIRE;
 290             }
 291     }
 292     else /* no WM_NCPAINT unless forced */
 293     {
 294         if( wnd->hrgnUpdate >  (HRGN)1 )
 295         {
 296 copyrgn:
 297             if( uncFlags & UNC_REGION )
 298             {
 299                 if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 300                 CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 301                 hrgnRet = hRgn;
 302             }
 303         }
 304         else
 305         if( wnd->hrgnUpdate == (HRGN)1 && (uncFlags & UNC_UPDATE) )
 306         {
 307             GETCLIENTRECTW( wnd, r );
 308             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 309             if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1;
 310         }
 311     }
 312
 313     if(!hClip && (uncFlags & UNC_ENTIRE) )
 314     {
 315         /* still don't do anything if there is no nonclient area */
 316         hClip = (HRGN)(memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 317     }
 318
 319     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 320     {
 321         if ( hClip == hrgnRet && hrgnRet > (HRGN)1 ) {
 322             hClip = CreateRectRgn( 0, 0, 0, 0 );
 323             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 324         }
 325
 326         SendMessageA( wnd->hwndSelf, WM_NCPAINT, (WPARAM)hClip, 0L );
 327         if( (hClip > (HRGN)1) && (hClip != hRgn) && (hClip != hrgnRet) )
 328             DeleteObject( hClip );
 329         /*
 330          * Since all Window locks are suspended while processing the WM_NCPAINT
 331          * we want to make sure the window still exists before continuing.
 332          */
 333         if (!IsWindow(wnd->hwndSelf))
 334         {
 335           DeleteObject(hrgnRet);
 336           hrgnRet=0;
 337         }
 338     }
 339
 340     TRACE_(nonclient)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 341
 342     return hrgnRet;
 343 }
 344
 345
 346 /***********************************************************************
 347  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 348  *
 349  *  Validate the portions of parents that are covered by a validated child
 350  *  wndPtr = child
 351  */
 352 static void RDW_ValidateParent(WND *wndChild)
 353 {
 354     HWND parent;
 355     HRGN hrg;
 356
 357     if (wndChild->hrgnUpdate == (HRGN)1 ) {
 358         RECT r;
 359         r.left = 0;
 360         r.top = 0;
 361         r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 362         r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 363         hrg = CreateRectRgnIndirect( &r );
 364     } else
 365         hrg = wndChild->hrgnUpdate;
 366
 367     parent = GetAncestor( wndChild->hwndSelf, GA_PARENT );
 368     while (parent && parent != GetDesktopWindow())
 369     {
 370         WND *wndParent = WIN_FindWndPtr( parent );
 371         if (wndParent && !(wndParent->dwStyle & WS_CLIPCHILDREN))
 372         {
 373             if (wndParent->hrgnUpdate != 0)
 374             {
 375                 POINT ptOffset;
 376                 RECT rect, rectParent;
 377                 if( wndParent->hrgnUpdate == (HRGN)1 )
 378                 {
 379                    RECT r;
 380
 381                    r.left = 0;
 382                    r.top = 0;
 383                    r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 384                    r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 385
 386                    wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 387                 }
 388                 /* we must offset the child region by the offset of the child rect in the parent */
 389                 GetWindowRect(wndParent->hwndSelf, &rectParent);
 390                 GetWindowRect(wndChild->hwndSelf, &rect);
 391                 ptOffset.x = rect.left - rectParent.left;
 392                 ptOffset.y = rect.top - rectParent.top;
 393                 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 394                 CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
 395                 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 396             }
 397         }
 398         WIN_ReleaseWndPtr( wndParent );
 399         parent = GetAncestor( parent, GA_PARENT );
 400     }
 401     if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 402 }
 403
 404 /***********************************************************************
 405  *              RDW_UpdateRgns [RedrawWindow() helper]
 406  *
 407  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 408  *  regions of windows that overlap it. Also, manages internal paint flags.
 409  *
 410  *  NOTE: Walks the window tree so the caller must lock it.
 411  *        MUST preserve hRgn (can modify but then has to restore).
 412  */
 413 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 414 {
 415     /*
 416      * Called only when one of the following is set:
 417      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 418      */
 419
 420     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 421     BOOL bChildren =  (!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 422                        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 423     RECT r;
 424
 425     r.left = 0;
 426     r.top = 0;
 427     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 428     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 429
 430     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 431
 432     if( flags & RDW_INVALIDATE )
 433     {
 434         if( hRgn > (HRGN)1 )
 435         {
 436             switch ((UINT)wndPtr->hrgnUpdate)
 437             {
 438                 default:
 439                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 440                         /* fall through */
 441                 case 0:
 442                         wndPtr->hrgnUpdate = crop_rgn( wndPtr->hrgnUpdate,
 443                                                        wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 444                                                        &r );
 445                         if( !bHadOne )
 446                         {
 447                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 448                             if( IsRectEmpty( &r ) )
 449                             {
 450                                 DeleteObject( wndPtr->hrgnUpdate );
 451                                 wndPtr->hrgnUpdate = 0;
 452                                 goto end;
 453                             }
 454                         }
 455                         break;
 456                 case 1: /* already an entire window */
 457                         break;
 458             }
 459         }
 460         else if( hRgn == (HRGN)1 )
 461         {
 462             if( wndPtr->hrgnUpdate > (HRGN)1 )
 463                 DeleteObject( wndPtr->hrgnUpdate );
 464             wndPtr->hrgnUpdate = (HRGN)1;
 465         }
 466         else
 467             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 468
 469         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 470             add_paint_count( wndPtr->hwndSelf, 1 );
 471
 472         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 473         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 474         flags    |= RDW_FRAME;
 475     }
 476     else if( flags & RDW_VALIDATE )
 477     {
 478         if( wndPtr->hrgnUpdate )
 479         {
 480             if( hRgn > (HRGN)1 )
 481             {
 482                 if( wndPtr->hrgnUpdate == (HRGN)1 )
 483                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 484
 485                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 486                     == NULLREGION )
 487                 {
 488                     DeleteObject( wndPtr->hrgnUpdate );
 489                     wndPtr->hrgnUpdate = 0;
 490                 }
 491             }
 492             else /* validate everything */
 493             {
 494                 if( wndPtr->hrgnUpdate > (HRGN)1 ) DeleteObject( wndPtr->hrgnUpdate );
 495                 wndPtr->hrgnUpdate = 0;
 496             }
 497
 498             if( !wndPtr->hrgnUpdate )
 499             {
 500                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 501                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 502                     add_paint_count( wndPtr->hwndSelf, -1 );
 503             }
 504         }
 505
 506         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 507         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 508
 509     }
 510
 511     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 512         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 513
 514     /* in/validate child windows that intersect with the region if it
 515      * is a valid handle. */
 516
 517     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 518     {
 519         HWND *list;
 520         if( hRgn > (HRGN)1 && bChildren && (list = WIN_ListChildren( wndPtr->hwndSelf )))
 521         {
 522             POINT ptTotal, prevOrigin = {0,0};
 523             POINT ptClient;
 524             INT i;
 525
 526             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 527             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 528
 529             for(i = ptTotal.x = ptTotal.y = 0; list[i]; i++)
 530             {
 531                 WND *wnd = WIN_FindWndPtr( list[i] );
 532                 if (!wnd) continue;
 533                 if( wnd->dwStyle & WS_VISIBLE )
 534                 {
 535                     POINT ptOffset;
 536
 537                     r.left = wnd->rectWindow.left + ptClient.x;
 538                     r.right = wnd->rectWindow.right + ptClient.x;
 539                     r.top = wnd->rectWindow.top + ptClient.y;
 540                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 541
 542                     ptOffset.x = r.left - prevOrigin.x;
 543                     ptOffset.y = r.top - prevOrigin.y;
 544                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 545
 546                     if( RectInRegion( hRgn, &r ) )
 547                     {
 548                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 549                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 550                         prevOrigin.x = r.left + ptTotal.x;
 551                         prevOrigin.y = r.top + ptTotal.y;
 552                         ptTotal.x += ptOffset.x;
 553                         ptTotal.y += ptOffset.y;
 554                     }
 555                 }
 556                 WIN_ReleaseWndPtr( wnd );
 557             }
 558             HeapFree( GetProcessHeap(), 0, list );
 559             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 560             bChildren = 0;
 561         }
 562     }
 563
 564     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 565
 566     if( bChildren )
 567     {
 568         HWND *list;
 569         if ((list = WIN_ListChildren( wndPtr->hwndSelf )))
 570         {
 571             INT i;
 572             for (i = 0; list[i]; i++)
 573             {
 574                 WND *wnd = WIN_FindWndPtr( list[i] );
 575                 if (!wnd) continue;
 576                 if( wnd->dwStyle & WS_VISIBLE )
 577                     RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 578                 WIN_ReleaseWndPtr( wnd );
 579             }
 580             HeapFree( GetProcessHeap(), 0, list );
 581         }
 582     }
 583
 584 end:
 585
 586     /* Set/clear internal paint flag */
 587
 588     if (flags & RDW_INTERNALPAINT)
 589     {
 590         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 591             add_paint_count( wndPtr->hwndSelf, 1 );
 592         wndPtr->flags |= WIN_INTERNAL_PAINT;
 593     }
 594     else if (flags & RDW_NOINTERNALPAINT)
 595     {
 596         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 597             add_paint_count( wndPtr->hwndSelf, -1 );
 598         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 599     }
 600 }
 601
 602 /***********************************************************************
 603  *           RDW_Paint [RedrawWindow() helper]
 604  *
 605  * Walks the window tree and paints/erases windows that have
 606  * nonzero update regions according to redraw flags. hrgn is a scratch
 607  * region passed down during recursion. Must not be 1.
 608  *
 609  */
 610 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 611 {
 612 /* NOTE: wndPtr is locked by caller.
 613  *
 614  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 615  * SendMessage() calls. This is a comment inside DefWindowProc() source
 616  * from 16-bit SDK:
 617  *
 618  *   This message avoids lots of inter-app message traffic
 619  *   by switching to the other task and continuing the
 620  *   recursion there.
 621  *
 622  * wParam         = flags
 623  * LOWORD(lParam) = hrgnClip
 624  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 625  *
 626  */
 627     HDC  hDC;
 628     HWND hWnd = wndPtr->hwndSelf;
 629     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassLongA(hWnd, GCL_HICON));
 630
 631       /* Erase/update the window itself ... */
 632
 633     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 634
 635     /*
 636      * Check if this window should delay it's processing of WM_NCPAINT.
 637      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 638      */
 639     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr->hwndSelf, 0) )
 640         ex |= RDW_EX_DELAY_NCPAINT;
 641
 642     if (flags & RDW_UPDATENOW)
 643     {
 644         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 645             SendMessageW( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 646     }
 647     else if (flags & RDW_ERASENOW)
 648     {
 649         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 650         HRGN hrgnRet;
 651
 652         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 653                                   hrgn,
 654                                   UNC_REGION | UNC_CHECK |
 655                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 656
 657         if( hrgnRet )
 658         {
 659             if( hrgnRet > (HRGN)1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 660             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 661             {
 662                 if( bIcon ) dcx |= DCX_WINDOW;
 663                 else
 664                 if( hrgnRet )
 665                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 666                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 667                 else
 668                     dcx &= ~DCX_INTERSECTRGN;
 669                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 670                 {
 671                     if (SendMessageW( hWnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
 672                                       (WPARAM)hDC, 0 ))
 673                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 674                     ReleaseDC( hWnd, hDC );
 675                 }
 676             }
 677         }
 678     }
 679
 680     if( !IsWindow(hWnd) ) return hrgn;
 681
 682       /* ... and its child windows */
 683
 684     if(!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 685        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 686     {
 687         HWND *list, *phwnd;
 688
 689         if( (list = WIN_ListChildren( wndPtr->hwndSelf )) )
 690         {
 691             for (phwnd = list; *phwnd; phwnd++)
 692             {
 693                 if (!(wndPtr = WIN_FindWndPtr( *phwnd ))) continue;
 694                 if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 695                      (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 696                     hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 697                 WIN_ReleaseWndPtr(wndPtr);
 698             }
 699             HeapFree( GetProcessHeap(), 0, list );
 700         }
 701     }
 702
 703     return hrgn;
 704 }
 705
 706
 707 /***********************************************************************
 708  *              RedrawWindow (USER32.@)
 709  */
 710 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 711                               HRGN hrgnUpdate, UINT flags )
 712 {
 713     HRGN hRgn = 0;
 714     RECT r, r2;
 715     POINT pt;
 716     WND* wndPtr;
 717
 718     if (!hwnd) hwnd = GetDesktopWindow();
 719
 720     /* check if the window or its parents are visible/not minimized */
 721
 722     if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
 723
 724     /* process pending events and messages before painting */
 725     if (flags & RDW_UPDATENOW)
 726         MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
 727
 728     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 729     if (TRACE_ON(win))
 730     {
 731         if( hrgnUpdate )
 732         {
 733             GetRgnBox( hrgnUpdate, &r );
 734             TRACE( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x\n",
 735                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags );
 736         }
 737         else
 738         {
 739             if( rectUpdate )
 740                 r = *rectUpdate;
 741             else
 742                 SetRectEmpty( &r );
 743             TRACE( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x\n",
 744                         hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 745                         r.top, r.right, r.bottom, hrgnUpdate, flags );
 746         }
 747     }
 748
 749     /* prepare an update region in window coordinates */
 750
 751     if (((flags & (RDW_INVALIDATE|RDW_FRAME)) == (RDW_INVALIDATE|RDW_FRAME)) ||
 752         ((flags & (RDW_VALIDATE|RDW_NOFRAME)) == (RDW_VALIDATE|RDW_NOFRAME)))
 753         r = wndPtr->rectWindow;
 754     else
 755         r = wndPtr->rectClient;
 756
 757     pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 758     pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 759     OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 760
 761     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 762     {
 763         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 764          * and put a new region straight into wndPtr->hrgnUpdate
 765          * so that RDW_UpdateRgns() won't have to do any extra work.
 766          */
 767
 768         if( hrgnUpdate )
 769         {
 770             if( wndPtr->hrgnUpdate )
 771             {
 772                 hRgn = CreateRectRgn( 0, 0, 0, 0 );
 773                 CombineRgn( hRgn, hrgnUpdate, 0, RGN_COPY );
 774                 OffsetRgn( hRgn, pt.x, pt.y );
 775             }
 776             else
 777             {
 778                 wndPtr->hrgnUpdate = crop_rgn( 0, hrgnUpdate, &r );
 779                 OffsetRgn( wndPtr->hrgnUpdate, pt.x, pt.y );
 780             }
 781         }
 782         else if( rectUpdate )
 783         {
 784             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 785             OffsetRect( &r2, pt.x, pt.y );
 786             if( wndPtr->hrgnUpdate == 0 )
 787                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 788             else
 789                 hRgn = CreateRectRgnIndirect( &r2 );
 790         }
 791         else /* entire window or client depending on RDW_FRAME */
 792         {
 793             if( flags & RDW_FRAME )
 794             {
 795                 if (wndPtr->hrgnUpdate) hRgn = (HRGN)1;
 796                 else wndPtr->hrgnUpdate = (HRGN)1;
 797             }
 798             else
 799             {
 800                 GETCLIENTRECTW( wndPtr, r2 );
 801                 if( wndPtr->hrgnUpdate == 0 )
 802                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 803                 else
 804                     hRgn = CreateRectRgnIndirect( &r2 );
 805             }
 806         }
 807     }
 808     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 809     {
 810         /* In this we cannot leave with zero hRgn */
 811         if( hrgnUpdate )
 812         {
 813             hRgn = crop_rgn( hRgn, hrgnUpdate,  &r );
 814             OffsetRgn( hRgn, pt.x, pt.y );
 815             GetRgnBox( hRgn, &r2 );
 816             if( IsRectEmpty( &r2 ) ) goto END;
 817         }
 818         else if( rectUpdate )
 819         {
 820             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 821                 OffsetRect( &r2, pt.x, pt.y );
 822             hRgn = CreateRectRgnIndirect( &r2 );
 823         }
 824         else /* entire window or client depending on RDW_NOFRAME */
 825         {
 826             if( flags & RDW_NOFRAME )
 827                 hRgn = (HRGN)1;
 828             else
 829             {
 830                 GETCLIENTRECTW( wndPtr, r2 );
 831                 hRgn = CreateRectRgnIndirect( &r2 );
 832             }
 833         }
 834     }
 835
 836     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 837
 838     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 839
 840     /* Erase/update windows, from now on hRgn is a scratch region */
 841
 842     hRgn = RDW_Paint( wndPtr, (hRgn == (HRGN)1) ? 0 : hRgn, flags, 0 );
 843
 844 END:
 845     if( hRgn > (HRGN)1 && (hRgn != hrgnUpdate) )
 846         DeleteObject(hRgn );
 847     WIN_ReleaseWndPtr(wndPtr);
 848     return TRUE;
 849 }
 850
 851
 852 /***********************************************************************
 853  *              UpdateWindow (USER32.@)
 854  */
 855 void WINAPI UpdateWindow( HWND hwnd )
 856 {
 857     RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
 858 }
 859
 860
 861 /***********************************************************************
 862  *              InvalidateRgn (USER32.@)
 863  */
 864 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 865 {
 866     return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 867 }
 868
 869
 870 /***********************************************************************
 871  *              InvalidateRect (USER32.@)
 872  */
 873 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
 874 {
 875     return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 876 }
 877
 878
 879 /***********************************************************************
 880  *              ValidateRgn (USER32.@)
 881  */
 882 BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
 883 {
 884     return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
 885 }
 886
 887
 888 /***********************************************************************
 889  *              ValidateRect (USER32.@)
 890  */
 891 BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
 892 {
 893     return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 894 }
 895
 896
 897 /***********************************************************************
 898  *              GetUpdateRect (USER32.@)
 899  */
 900 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
 901 {
 902     BOOL retvalue;
 903     WND * wndPtr = WIN_FindWndPtr( hwnd );
 904     if (!wndPtr) return FALSE;
 905
 906     if (rect)
 907     {
 908         if (wndPtr->hrgnUpdate > (HRGN)1)
 909         {
 910             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
 911             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
 912             {
 913                 retvalue = FALSE;
 914                 goto END;
 915             }
 916             GetRgnBox( hrgn, rect );
 917             DeleteObject( hrgn );
 918             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
 919             {
 920                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
 921                 {
 922                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
 923                 }
 924             }
 925         }
 926         else
 927         if( wndPtr->hrgnUpdate == (HRGN)1 )
 928         {
 929             GetClientRect( hwnd, rect );
 930             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
 931         }
 932         else
 933             SetRectEmpty( rect );
 934     }
 935     retvalue = (wndPtr->hrgnUpdate >= (HRGN)1);
 936 END:
 937     WIN_ReleaseWndPtr(wndPtr);
 938     return retvalue;
 939 }
 940
 941
 942 /***********************************************************************
 943  *              GetUpdateRgn (USER32.@)
 944  */
 945 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 946 {
 947     INT retval;
 948     WND * wndPtr = WIN_FindWndPtr( hwnd );
 949     if (!wndPtr) return ERROR;
 950
 951     if (wndPtr->hrgnUpdate == 0)
 952     {
 953         SetRectRgn( hrgn, 0, 0, 0, 0 );
 954         retval = NULLREGION;
 955         goto END;
 956     }
 957     else
 958     if (wndPtr->hrgnUpdate == (HRGN)1)
 959     {
 960         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
 961                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
 962         retval = SIMPLEREGION;
 963     }
 964     else
 965     {
 966         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
 967         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 968                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
 969     }
 970     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
 971 END:
 972     WIN_ReleaseWndPtr(wndPtr);
 973     return retval;
 974 }
 975
 976
 977 /***********************************************************************
 978  *              ExcludeUpdateRgn (USER32.@)
 979  */
 980 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
 981 {
 982     RECT rect;
 983     WND * wndPtr;
 984
 985     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
 986
 987     if (wndPtr->hrgnUpdate)
 988     {
 989         INT ret;
 990         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
 991                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
 992                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
 993                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
 994         if( wndPtr->hrgnUpdate > (HRGN)1 )
 995         {
 996             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
 997             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 998                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
 999         }
1000
1001         /* do ugly coordinate translations in dce.c */
1002
1003         ret = DCE_ExcludeRgn( hdc, hwnd, hrgn );
1004         DeleteObject( hrgn );
1005         WIN_ReleaseWndPtr(wndPtr);
1006         return ret;
1007     }
1008     WIN_ReleaseWndPtr(wndPtr);
1009     return GetClipBox( hdc, &rect );
1010 }
1011
1012
1013
1014 /***********************************************************************
1015  *              FillRect (USER.81)
1016  * NOTE
1017  *   The Win16 variant doesn't support special color brushes like
1018  *   the Win32 one, despite the fact that Win16, as well as Win32,
1019  *   supports special background brushes for a window class.
1020  */
1021 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1022 {
1023     HBRUSH prevBrush;
1024
1025     /* coordinates are logical so we cannot fast-check 'rect',
1026      * it will be done later in the PatBlt().
1027      */
1028
1029     if (!(prevBrush = SelectObject( HDC_32(hdc), HBRUSH_32(hbrush) ))) return 0;
1030     PatBlt( HDC_32(hdc), rect->left, rect->top,
1031               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1032     SelectObject( HDC_32(hdc), prevBrush );
1033     return 1;
1034 }
1035
1036
1037 /***********************************************************************
1038  *              FillRect (USER32.@)
1039  */
1040 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1041 {
1042     HBRUSH prevBrush;
1043
1044     if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
1045         hbrush = GetSysColorBrush( (INT) hbrush - 1 );
1046     }
1047
1048     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1049     PatBlt( hdc, rect->left, rect->top,
1050               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1051     SelectObject( hdc, prevBrush );
1052     return 1;
1053 }
1054
1055
1056 /***********************************************************************
1057  *              InvertRect (USER.82)
1058  */
1059 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1060 {
1061     PatBlt( HDC_32(hdc), rect->left, rect->top,
1062               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1063 }
1064
1065
1066 /***********************************************************************
1067  *              InvertRect (USER32.@)
1068  */
1069 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1070 {
1071     return PatBlt( hdc, rect->left, rect->top,
1072                      rect->right - rect->left, rect->bottom - rect->top,
1073                      DSTINVERT );
1074 }
1075
1076
1077 /***********************************************************************
1078  *              FrameRect (USER32.@)
1079  */
1080 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1081 {
1082     HBRUSH prevBrush;
1083     RECT r = *rect;
1084
1085     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1086     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1087
1088     PatBlt( hdc, r.left, r.top, 1,
1089               r.bottom - r.top, PATCOPY );
1090     PatBlt( hdc, r.right - 1, r.top, 1,
1091               r.bottom - r.top, PATCOPY );
1092     PatBlt( hdc, r.left, r.top,
1093               r.right - r.left, 1, PATCOPY );
1094     PatBlt( hdc, r.left, r.bottom - 1,
1095               r.right - r.left, 1, PATCOPY );
1096
1097     SelectObject( hdc, prevBrush );
1098     return TRUE;
1099 }
1100
1101
1102 /***********************************************************************
1103  *              FrameRect (USER.83)
1104  */
1105 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1106 {
1107     RECT rect;
1108     CONV_RECT16TO32( rect16, &rect );
1109     return FrameRect( HDC_32(hdc), &rect, HBRUSH_32(hbrush) );
1110 }
1111
1112
1113 /***********************************************************************
1114  *              DrawFocusRect (USER.466)
1115  */
1116 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1117 {
1118     RECT rect32;
1119     CONV_RECT16TO32( rc, &rect32 );
1120     DrawFocusRect( HDC_32(hdc), &rect32 );
1121 }
1122
1123
1124 /***********************************************************************
1125  *              DrawFocusRect (USER32.@)
1126  *
1127  * FIXME: PatBlt(PATINVERT) with background brush.
1128  */
1129 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1130 {
1131     HBRUSH hOldBrush;
1132     HPEN hOldPen, hNewPen;
1133     INT oldDrawMode, oldBkMode;
1134
1135     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1136     hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
1137     hOldPen = SelectObject(hdc, hNewPen);
1138     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1139     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1140
1141     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1142
1143     SetBkMode(hdc, oldBkMode);
1144     SetROP2(hdc, oldDrawMode);
1145     SelectObject(hdc, hOldPen);
1146     DeleteObject(hNewPen);
1147     SelectObject(hdc, hOldBrush);
1148
1149     return TRUE;
1150 }
1151
1152
1153 /**********************************************************************
1154  *              DrawAnimatedRects (USER32.@)
1155  */
1156 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1157                                    const RECT* lprcFrom,
1158                                    const RECT* lprcTo )
1159 {
1160     FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1161     return TRUE;
1162 }
1163
1164
1165 /**********************************************************************
1166  *          PAINTING_DrawStateJam
1167  *
1168  * Jams in the requested type in the dc
1169  */
1170 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1171                                   DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1172                                   LPRECT rc, UINT dtflags, BOOL unicode )
1173 {
1174     HDC memdc;
1175     HBITMAP hbmsave;
1176     BOOL retval;
1177     INT cx = rc->right - rc->left;
1178     INT cy = rc->bottom - rc->top;
1179
1180     switch(opcode)
1181     {
1182     case DST_TEXT:
1183     case DST_PREFIXTEXT:
1184         if(unicode)
1185             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1186         else
1187             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1188
1189     case DST_ICON:
1190         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1191
1192     case DST_BITMAP:
1193         memdc = CreateCompatibleDC(hdc);
1194         if(!memdc) return FALSE;
1195         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1196         if(!hbmsave)
1197         {
1198             DeleteDC(memdc);
1199             return FALSE;
1200         }
1201         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1202         SelectObject(memdc, hbmsave);
1203         DeleteDC(memdc);
1204         return retval;
1205
1206     case DST_COMPLEX:
1207         if(func) {
1208             BOOL bRet;
1209             /* DRAWSTATEPROC assumes that it draws at the center of coordinates  */
1210
1211             OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
1212             bRet = func(hdc, lp, wp, cx, cy);
1213             /* Restore origin */
1214             OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
1215             return bRet;
1216         } else
1217             return FALSE;
1218     }
1219     return FALSE;
1220 }
1221
1222 /**********************************************************************
1223  *      PAINTING_DrawState()
1224  */
1225 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr, DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1226                                INT x, INT y, INT cx, INT cy, UINT flags, BOOL unicode )
1227 {
1228     HBITMAP hbm, hbmsave;
1229     HFONT hfsave;
1230     HBRUSH hbsave, hbrtmp = 0;
1231     HDC memdc;
1232     RECT rc;
1233     UINT dtflags = DT_NOCLIP;
1234     COLORREF fg, bg;
1235     UINT opcode = flags & 0xf;
1236     INT len = wp;
1237     BOOL retval, tmp;
1238
1239     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1240     {
1241         if(unicode)
1242             len = strlenW((LPWSTR)lp);
1243         else
1244             len = strlen((LPSTR)lp);
1245     }
1246
1247     /* Find out what size the image has if not given by caller */
1248     if(!cx || !cy)
1249     {
1250         SIZE s;
1251         CURSORICONINFO *ici;
1252         BITMAP bm;
1253
1254         switch(opcode)
1255         {
1256         case DST_TEXT:
1257         case DST_PREFIXTEXT:
1258             if(unicode)
1259                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1260             else
1261                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1262             if(!retval) return FALSE;
1263             break;
1264
1265         case DST_ICON:
1266             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1267             if(!ici) return FALSE;
1268             s.cx = ici->nWidth;
1269             s.cy = ici->nHeight;
1270             GlobalUnlock16((HGLOBAL16)lp);
1271             break;
1272
1273         case DST_BITMAP:
1274             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1275                 return FALSE;
1276             s.cx = bm.bmWidth;
1277             s.cy = bm.bmHeight;
1278             break;
1279
1280         case DST_COMPLEX: /* cx and cy must be set in this mode */
1281             return FALSE;
1282         }
1283
1284         if(!cx) cx = s.cx;
1285         if(!cy) cy = s.cy;
1286     }
1287
1288     rc.left   = x;
1289     rc.top    = y;
1290     rc.right  = x + cx;
1291     rc.bottom = y + cy;
1292
1293     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1294         dtflags |= DT_RIGHT;
1295     if(opcode == DST_TEXT)
1296         dtflags |= DT_NOPREFIX;
1297
1298     /* For DSS_NORMAL we just jam in the image and return */
1299     if((flags & 0x7ff0) == DSS_NORMAL)
1300     {
1301         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode);
1302     }
1303
1304     /* For all other states we need to convert the image to B/W in a local bitmap */
1305     /* before it is displayed */
1306     fg = SetTextColor(hdc, RGB(0, 0, 0));
1307     bg = SetBkColor(hdc, RGB(255, 255, 255));
1308     hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
1309     memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
1310     retval = FALSE; /* assume failure */
1311
1312     /* From here on we must use "goto cleanup" when something goes wrong */
1313     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1314     if(!hbm) goto cleanup;
1315     memdc   = CreateCompatibleDC(hdc);
1316     if(!memdc) goto cleanup;
1317     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1318     if(!hbmsave) goto cleanup;
1319     rc.left = rc.top = 0;
1320     rc.right = cx;
1321     rc.bottom = cy;
1322     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1323     SetBkColor(memdc, RGB(255, 255, 255));
1324     SetTextColor(memdc, RGB(0, 0, 0));
1325     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1326
1327     /* DST_COMPLEX may draw text as well,
1328      * so we must be sure that correct font is selected
1329      */
1330     if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
1331     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode);
1332     if(hfsave) SelectObject(memdc, hfsave);
1333     if(!tmp) goto cleanup;
1334
1335     /* This state cause the image to be dithered */
1336     if(flags & DSS_UNION)
1337     {
1338         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1339         if(!hbsave) goto cleanup;
1340         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1341         SelectObject(memdc, hbsave);
1342         if(!tmp) goto cleanup;
1343     }
1344
1345     if (flags & DSS_DISABLED)
1346        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
1347     else if (flags & DSS_DEFAULT)
1348        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1349
1350     /* Draw light or dark shadow */
1351     if (flags & (DSS_DISABLED|DSS_DEFAULT))
1352     {
1353        if(!hbrtmp) goto cleanup;
1354        hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
1355        if(!hbsave) goto cleanup;
1356        if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1357        SelectObject(hdc, hbsave);
1358        DeleteObject(hbrtmp);
1359        hbrtmp = 0;
1360     }
1361
1362     if (flags & DSS_DISABLED)
1363     {
1364        hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1365        if(!hbrtmp) goto cleanup;
1366     }
1367     else if (!hbr)
1368     {
1369        hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
1370     }
1371
1372     hbsave = (HBRUSH)SelectObject(hdc, hbr);
1373
1374     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1375
1376     retval = TRUE; /* We succeeded */
1377
1378 cleanup:
1379     SetTextColor(hdc, fg);
1380     SetBkColor(hdc, bg);
1381
1382     if(hbsave)  SelectObject(hdc, hbsave);
1383     if(hbmsave) SelectObject(memdc, hbmsave);
1384     if(hbrtmp)  DeleteObject(hbrtmp);
1385     if(hbm)     DeleteObject(hbm);
1386     if(memdc)   DeleteDC(memdc);
1387
1388     return retval;
1389 }
1390
1391 /**********************************************************************
1392  *              DrawStateA (USER32.@)
1393  */
1394 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1395                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1396                    INT x, INT y, INT cx, INT cy, UINT flags)
1397 {
1398     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE);
1399 }
1400
1401 /**********************************************************************
1402  *              DrawStateW (USER32.@)
1403  */
1404 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1405                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1406                    INT x, INT y, INT cx, INT cy, UINT flags)
1407 {
1408     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE);
1409 }
1410
1411
1412 /**********************************************************************
1413  *           DrawState    (USER.449)
1414  */
1415 BOOL16 WINAPI DrawState16( HDC16 hdc, HBRUSH16 hbr, DRAWSTATEPROC16 func, LPARAM ldata,
1416                            WPARAM16 wdata, INT16 x, INT16 y, INT16 cx, INT16 cy, UINT16 flags )
1417 {
1418     struct draw_state_info info;
1419     UINT opcode = flags & 0xf;
1420
1421     if (opcode == DST_TEXT || opcode == DST_PREFIXTEXT)
1422     {
1423         /* make sure DrawStateA doesn't try to use ldata as a pointer */
1424         if (!wdata) wdata = strlen( MapSL(ldata) );
1425         if (!cx || !cy)
1426         {
1427             SIZE s;
1428             if (!GetTextExtentPoint32A( HDC_32(hdc), MapSL(ldata), wdata, &s )) return FALSE;
1429             if (!cx) cx = s.cx;
1430             if (!cy) cy = s.cy;
1431         }
1432     }
1433     info.proc  = func;
1434     info.param = ldata;
1435     return DrawStateA( HDC_32(hdc), HBRUSH_32(hbr), draw_state_callback,
1436                        (LPARAM)&info, wdata, x, y, cx, cy, flags );
1437 }
1438
1439
1440 /***********************************************************************
1441  *              SelectPalette (Not a Windows API)
1442  */
1443 HPALETTE WINAPI SelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
1444 {
1445     WORD wBkgPalette = 1;
1446
1447     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
1448     {
1449         HWND hwnd = WindowFromDC( hDC );
1450         if (hwnd)
1451         {
1452             HWND hForeground = GetForegroundWindow();
1453             /* set primary palette if it's related to current active */
1454             if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
1455         }
1456     }
1457     return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
1458 }
1459
1460
1461 /***********************************************************************
1462  *              UserRealizePalette (USER32.@)
1463  */
1464 UINT WINAPI UserRealizePalette( HDC hDC )
1465 {
1466     UINT realized = pfnGDIRealizePalette( hDC );
1467
1468     /* do not send anything if no colors were changed */
1469     if (realized && IsDCCurrentPalette16( HDC_16(hDC) ))
1470     {
1471         /* send palette change notification */
1472         HWND hWnd = WindowFromDC( hDC );
1473         if (hWnd) SendMessageA( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0L);
1474     }
1475     return realized;
1476 }