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 "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "wine/winuser16.h"
  31 #include "wownt32.h"
  32 #include "wine/unicode.h"
  33 #include "wine/server.h"
  34 #include "user.h"
  35 #include "win.h"
  36 #include "message.h"
  37 #include "dce.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(win);
  41 WINE_DECLARE_DEBUG_CHANNEL(nonclient);
  42
  43 /* client rect in window coordinates */
  44
  45 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  46                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  47                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  48                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  49
  50   /* PAINT_RedrawWindow() control flags */
  51 #define RDW_EX_DELAY_NCPAINT    0x0020
  52
  53   /* WIN_UpdateNCRgn() flags */
  54 #define UNC_CHECK               0x0001
  55 #define UNC_ENTIRE              0x0002
  56 #define UNC_REGION              0x0004
  57 #define UNC_UPDATE              0x0008
  58 #define UNC_DELAY_NCPAINT       0x0010
  59 #define UNC_IN_BEGINPAINT       0x0020
  60
  61   /* Last COLOR id */
  62 #define COLOR_MAX   COLOR_GRADIENTINACTIVECAPTION
  63
  64 HPALETTE (WINAPI *pfnGDISelectPalette)(HDC hdc, HPALETTE hpal, WORD bkgnd ) = NULL;
  65 UINT (WINAPI *pfnGDIRealizePalette)(HDC hdc) = NULL;
  66
  67
  68 /***********************************************************************
  69  *           add_paint_count
  70  *
  71  * Add an increment (normally 1 or -1) to the current paint count of a window.
  72  */
  73 static void add_paint_count( HWND hwnd, int incr )
  74 {
  75     SERVER_START_REQ( inc_window_paint_count )
  76     {
  77         req->handle = hwnd;
  78         req->incr   = incr;
  79         wine_server_call( req );
  80     }
  81     SERVER_END_REQ;
  82 }
  83
  84
  85 /***********************************************************************
  86  *           crop_rgn
  87  *
  88  * hSrc:        Region to crop.
  89  * lpRect:      Clipping rectangle.
  90  *
  91  * hDst: Region to hold the result (a new region is created if it's 0).
  92  *       Allowed to be the same region as hSrc in which case everything
  93  *       will be done in place, with no memory reallocations.
  94  *
  95  * Returns: hDst if success, 0 otherwise.
  96  */
  97 static HRGN crop_rgn( HRGN hDst, HRGN hSrc, const RECT *rect )
  98 {
  99     HRGN h = CreateRectRgnIndirect( rect );
 100     if (hDst == 0) hDst = h;
 101     CombineRgn( hDst, hSrc, h, RGN_AND );
 102     if (hDst != h) DeleteObject( h );
 103     return hDst;
 104 }
 105
 106
 107 /***********************************************************************
 108  *           WIN_HaveToDelayNCPAINT
 109  *
 110  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
 111  * is generated as soon as a region intersecting the non-client area
 112  * of a window is invalidated.
 113  *
 114  * This technique will work fine for all windows whose parents
 115  * have the WS_CLIPCHILDREN style. When the parents have that style,
 116  * they are not going to override the contents of their children.
 117  * However, when the parent doesn't have that style, Windows relies
 118  * on a "painter's algorithm" to display the contents of the windows.
 119  * That is, windows are painted from back to front. This includes the
 120  * non-client area.
 121  *
 122  * This method looks at the current state of a window to determine
 123  * if the sending of the WM_NCPAINT message should be delayed until
 124  * the BeginPaint call.
 125  *
 126  * PARAMS:
 127  *   wndPtr   - A Locked window pointer to the window we're
 128  *              examining.
 129  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
 130  *              function. This is a shortcut for the cases when
 131  *              we already know when to avoid scanning all the
 132  *              parents of a window. If you already know that this
 133  *              window's NCPAINT should be delayed, set the
 134  *              UNC_DELAY_NCPAINT flag for this parameter.
 135  *
 136  *              This shortcut behavior is implemented in the
 137  *              RDW_Paint() method.
 138  *
 139  */
 140 static BOOL WIN_HaveToDelayNCPAINT( HWND hwnd, UINT uncFlags)
 141 {
 142   /*
 143    * Test the shortcut first. (duh)
 144    */
 145   if (uncFlags & UNC_DELAY_NCPAINT)
 146     return TRUE;
 147
 148   /*
 149    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
 150    * method only. This is another shortcut to avoid going
 151    * up the parent's chain of the window to finally
 152    * figure-out that none of them has an invalid region.
 153    */
 154   if (uncFlags & UNC_IN_BEGINPAINT)
 155     return FALSE;
 156
 157   /*
 158    * Scan all the parents of this window to find a window
 159    * that doesn't have the WS_CLIPCHILDREN style and that
 160    * has an invalid region.
 161    */
 162   while ((hwnd = GetAncestor( hwnd, GA_PARENT )))
 163   {
 164       WND* parentWnd = WIN_FindWndPtr( hwnd );
 165       if (parentWnd && !(parentWnd->dwStyle & WS_CLIPCHILDREN) && parentWnd->hrgnUpdate)
 166       {
 167           WIN_ReleaseWndPtr( parentWnd );
 168           return TRUE;
 169       }
 170       WIN_ReleaseWndPtr( parentWnd );
 171   }
 172   return FALSE;
 173 }
 174
 175 /***********************************************************************
 176  *           WIN_UpdateNCRgn
 177  *
 178  *  Things to do:
 179  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 180  *      Crop hrgnUpdate to a client rect, especially if it 1.
 181  *      If UNC_REGION is set return update region for the client rect.
 182  *
 183  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 184  *        The trick is that when the returned region handle may be different from hRgn.
 185  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 186  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 187  *        a DC without extra clipping region.
 188  */
 189 static HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 190 {
 191     RECT  r;
 192     HRGN  hClip = 0;
 193     HRGN  hrgnRet = 0;
 194
 195     TRACE_(nonclient)("hwnd %p [%p] hrgn %p, unc %04x, ncf %i\n",
 196                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 197
 198     /* desktop window doesn't have a nonclient area */
 199     if(wnd->hwndSelf == GetDesktopWindow())
 200     {
 201         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 202         if( wnd->hrgnUpdate > (HRGN)1 )
 203         {
 204             if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 205             CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 206             hrgnRet = hRgn;
 207         }
 208         else
 209         {
 210             hrgnRet = wnd->hrgnUpdate;
 211         }
 212         return hrgnRet;
 213     }
 214
 215     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 216         !(wnd->flags & WIN_NCACTIVATED) )
 217     {
 218         wnd->flags |= WIN_NCACTIVATED;
 219         uncFlags |= UNC_ENTIRE;
 220     }
 221
 222     /*
 223      * If the window's non-client area needs to be painted,
 224      */
 225     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 226          !WIN_HaveToDelayNCPAINT(wnd->hwndSelf, uncFlags) )
 227     {
 228             RECT r2, r3;
 229
 230             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 231             GETCLIENTRECTW( wnd, r );
 232
 233             TRACE_(nonclient)( "\tclient box (%ld,%ld-%ld,%ld), hrgnUpdate %p\n",
 234                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 235             if( wnd->hrgnUpdate > (HRGN)1 )
 236             {
 237                 /* Check if update rgn overlaps with nonclient area */
 238
 239                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 240                 UnionRect( &r3, &r2, &r );
 241                 if( r3.left != r.left || r3.top != r.top ||
 242                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 243                 {
 244                     /* crop hrgnUpdate, save old one in hClip - the only
 245                      * case that places a valid region handle in hClip */
 246
 247                     hClip = wnd->hrgnUpdate;
 248                     wnd->hrgnUpdate = crop_rgn( hRgn, hClip, &r );
 249                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 250                 }
 251
 252                 if( uncFlags & UNC_CHECK )
 253                 {
 254                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 255                     if( IsRectEmpty( &r3 ) )
 256                     {
 257                         /* delete the update region since all invalid
 258                          * parts were in the nonclient area */
 259
 260                         DeleteObject( wnd->hrgnUpdate );
 261                         wnd->hrgnUpdate = 0;
 262                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 263                             add_paint_count( wnd->hwndSelf, -1 );
 264
 265                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 266                     }
 267                 }
 268
 269                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 270             }
 271             else
 272             if( wnd->hrgnUpdate == (HRGN)1 )/* entire window */
 273             {
 274                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 275                 if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1;
 276                 uncFlags |= UNC_ENTIRE;
 277             }
 278     }
 279     else /* no WM_NCPAINT unless forced */
 280     {
 281         if( wnd->hrgnUpdate >  (HRGN)1 )
 282         {
 283 copyrgn:
 284             if( uncFlags & UNC_REGION )
 285             {
 286                 if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 287                 CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 288                 hrgnRet = hRgn;
 289             }
 290         }
 291         else
 292         if( wnd->hrgnUpdate == (HRGN)1 && (uncFlags & UNC_UPDATE) )
 293         {
 294             GETCLIENTRECTW( wnd, r );
 295             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 296             if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1;
 297         }
 298     }
 299
 300     if(!hClip && (uncFlags & UNC_ENTIRE) )
 301     {
 302         /* still don't do anything if there is no nonclient area */
 303         hClip = (HRGN)(memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 304     }
 305
 306     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 307     {
 308         if ( hClip == hrgnRet && hrgnRet > (HRGN)1 ) {
 309             hClip = CreateRectRgn( 0, 0, 0, 0 );
 310             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 311         }
 312
 313         SendMessageA( wnd->hwndSelf, WM_NCPAINT, (WPARAM)hClip, 0L );
 314         if( (hClip > (HRGN)1) && (hClip != hRgn) && (hClip != hrgnRet) )
 315             DeleteObject( hClip );
 316         /*
 317          * Since all Window locks are suspended while processing the WM_NCPAINT
 318          * we want to make sure the window still exists before continuing.
 319          */
 320         if (!IsWindow(wnd->hwndSelf))
 321         {
 322           DeleteObject(hrgnRet);
 323           hrgnRet=0;
 324         }
 325     }
 326
 327     TRACE_(nonclient)("returning %p (hClip = %p, hrgnUpdate = %p)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 328
 329     return hrgnRet;
 330 }
 331
 332
 333 /***********************************************************************
 334  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 335  *
 336  *  Validate the portions of parents that are covered by a validated child
 337  *  wndPtr = child
 338  */
 339 static void RDW_ValidateParent(WND *wndChild)
 340 {
 341     HWND parent;
 342     HRGN hrg;
 343
 344     if (wndChild->hrgnUpdate == (HRGN)1 ) {
 345         RECT r;
 346         r.left = 0;
 347         r.top = 0;
 348         r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 349         r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 350         hrg = CreateRectRgnIndirect( &r );
 351     } else
 352         hrg = wndChild->hrgnUpdate;
 353
 354     parent = GetAncestor( wndChild->hwndSelf, GA_PARENT );
 355     while (parent && parent != GetDesktopWindow())
 356     {
 357         WND *wndParent = WIN_FindWndPtr( parent );
 358         if (wndParent && !(wndParent->dwStyle & WS_CLIPCHILDREN))
 359         {
 360             if (wndParent->hrgnUpdate != 0)
 361             {
 362                 POINT ptOffset;
 363                 RECT rect, rectParent;
 364                 if( wndParent->hrgnUpdate == (HRGN)1 )
 365                 {
 366                    RECT r;
 367
 368                    r.left = 0;
 369                    r.top = 0;
 370                    r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 371                    r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 372
 373                    wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 374                 }
 375                 /* we must offset the child region by the offset of the child rect in the parent */
 376                 GetWindowRect(wndParent->hwndSelf, &rectParent);
 377                 GetWindowRect(wndChild->hwndSelf, &rect);
 378                 ptOffset.x = rect.left - rectParent.left;
 379                 ptOffset.y = rect.top - rectParent.top;
 380                 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 381                 if (CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF ) == NULLREGION)
 382                 {
 383                     /* the update region has become empty */
 384                     DeleteObject( wndParent->hrgnUpdate );
 385                     wndParent->hrgnUpdate = 0;
 386                     wndParent->flags &= ~WIN_NEEDS_ERASEBKGND;
 387                     if( !(wndParent->flags & WIN_INTERNAL_PAINT) )
 388                         add_paint_count( wndParent->hwndSelf, -1 );
 389                 }
 390                 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 391             }
 392         }
 393         WIN_ReleaseWndPtr( wndParent );
 394         parent = GetAncestor( parent, GA_PARENT );
 395     }
 396     if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 397 }
 398
 399 /***********************************************************************
 400  *              RDW_UpdateRgns [RedrawWindow() helper]
 401  *
 402  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 403  *  regions of windows that overlap it. Also, manages internal paint flags.
 404  *
 405  *  NOTE: Walks the window tree so the caller must lock it.
 406  *        MUST preserve hRgn (can modify but then has to restore).
 407  */
 408 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 409 {
 410     /*
 411      * Called only when one of the following is set:
 412      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 413      */
 414
 415     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 416     BOOL bChildren =  (!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 417                        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 418     RECT r;
 419
 420     r.left = 0;
 421     r.top = 0;
 422     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 423     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 424
 425     TRACE("\thwnd %p [%p] -> hrgn [%p], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 426
 427     if( flags & RDW_INVALIDATE )
 428     {
 429         if( hRgn > (HRGN)1 )
 430         {
 431             switch ((UINT)wndPtr->hrgnUpdate)
 432             {
 433                 default:
 434                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 435                         /* fall through */
 436                 case 0:
 437                         wndPtr->hrgnUpdate = crop_rgn( wndPtr->hrgnUpdate,
 438                                                        wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 439                                                        &r );
 440                         if( !bHadOne )
 441                         {
 442                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 443                             if( IsRectEmpty( &r ) )
 444                             {
 445                                 DeleteObject( wndPtr->hrgnUpdate );
 446                                 wndPtr->hrgnUpdate = 0;
 447                                 goto end;
 448                             }
 449                         }
 450                         break;
 451                 case 1: /* already an entire window */
 452                         break;
 453             }
 454         }
 455         else if( hRgn == (HRGN)1 )
 456         {
 457             if( wndPtr->hrgnUpdate > (HRGN)1 )
 458                 DeleteObject( wndPtr->hrgnUpdate );
 459             wndPtr->hrgnUpdate = (HRGN)1;
 460         }
 461         else
 462             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 463
 464         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 465             add_paint_count( wndPtr->hwndSelf, 1 );
 466
 467         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 468         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 469         flags    |= RDW_FRAME;
 470     }
 471     else if( flags & RDW_VALIDATE )
 472     {
 473         if( wndPtr->hrgnUpdate )
 474         {
 475             if( hRgn > (HRGN)1 )
 476             {
 477                 if( wndPtr->hrgnUpdate == (HRGN)1 )
 478                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 479
 480                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 481                     == NULLREGION )
 482                 {
 483                     DeleteObject( wndPtr->hrgnUpdate );
 484                     wndPtr->hrgnUpdate = 0;
 485                 }
 486             }
 487             else /* validate everything */
 488             {
 489                 if( wndPtr->hrgnUpdate > (HRGN)1 ) DeleteObject( wndPtr->hrgnUpdate );
 490                 wndPtr->hrgnUpdate = 0;
 491             }
 492
 493             if( !wndPtr->hrgnUpdate )
 494             {
 495                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 496                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 497                     add_paint_count( wndPtr->hwndSelf, -1 );
 498             }
 499         }
 500
 501         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 502         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 503
 504     }
 505
 506     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 507         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 508
 509     /* in/validate child windows that intersect with the region if it
 510      * is a valid handle. */
 511
 512     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 513     {
 514         HWND *list;
 515         if( hRgn > (HRGN)1 && bChildren && (list = WIN_ListChildren( wndPtr->hwndSelf )))
 516         {
 517             POINT ptTotal, prevOrigin = {0,0};
 518             POINT ptClient;
 519             INT i;
 520
 521             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 522             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 523
 524             for(i = ptTotal.x = ptTotal.y = 0; list[i]; i++)
 525             {
 526                 WND *wnd = WIN_FindWndPtr( list[i] );
 527                 if (!wnd) continue;
 528                 if( wnd->dwStyle & WS_VISIBLE )
 529                 {
 530                     POINT ptOffset;
 531
 532                     r.left = wnd->rectWindow.left + ptClient.x;
 533                     r.right = wnd->rectWindow.right + ptClient.x;
 534                     r.top = wnd->rectWindow.top + ptClient.y;
 535                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 536
 537                     ptOffset.x = r.left - prevOrigin.x;
 538                     ptOffset.y = r.top - prevOrigin.y;
 539                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 540
 541                     if( RectInRegion( hRgn, &r ) )
 542                     {
 543                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 544                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 545                         prevOrigin.x = r.left + ptTotal.x;
 546                         prevOrigin.y = r.top + ptTotal.y;
 547                         ptTotal.x += ptOffset.x;
 548                         ptTotal.y += ptOffset.y;
 549                     }
 550                 }
 551                 WIN_ReleaseWndPtr( wnd );
 552             }
 553             HeapFree( GetProcessHeap(), 0, list );
 554             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 555             bChildren = 0;
 556         }
 557     }
 558
 559     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 560
 561     if( bChildren )
 562     {
 563         HWND *list;
 564         if ((list = WIN_ListChildren( wndPtr->hwndSelf )))
 565         {
 566             INT i;
 567             for (i = 0; list[i]; i++)
 568             {
 569                 WND *wnd = WIN_FindWndPtr( list[i] );
 570                 if (!wnd) continue;
 571                 if( wnd->dwStyle & WS_VISIBLE )
 572                     RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 573                 WIN_ReleaseWndPtr( wnd );
 574             }
 575             HeapFree( GetProcessHeap(), 0, list );
 576         }
 577     }
 578
 579 end:
 580
 581     /* Set/clear internal paint flag */
 582
 583     if (flags & RDW_INTERNALPAINT)
 584     {
 585         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 586             add_paint_count( wndPtr->hwndSelf, 1 );
 587         wndPtr->flags |= WIN_INTERNAL_PAINT;
 588     }
 589     else if (flags & RDW_NOINTERNALPAINT)
 590     {
 591         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 592             add_paint_count( wndPtr->hwndSelf, -1 );
 593         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 594     }
 595 }
 596
 597 /***********************************************************************
 598  *           RDW_Paint [RedrawWindow() helper]
 599  *
 600  * Walks the window tree and paints/erases windows that have
 601  * nonzero update regions according to redraw flags. hrgn is a scratch
 602  * region passed down during recursion. Must not be 1.
 603  *
 604  */
 605 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 606 {
 607 /* NOTE: wndPtr is locked by caller.
 608  *
 609  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 610  * SendMessage() calls. This is a comment inside DefWindowProc() source
 611  * from 16-bit SDK:
 612  *
 613  *   This message avoids lots of inter-app message traffic
 614  *   by switching to the other task and continuing the
 615  *   recursion there.
 616  *
 617  * wParam         = flags
 618  * LOWORD(lParam) = hrgnClip
 619  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 620  *
 621  */
 622     HDC  hDC;
 623     HWND hWnd = wndPtr->hwndSelf;
 624     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassLongA(hWnd, GCL_HICON));
 625
 626       /* Erase/update the window itself ... */
 627
 628     TRACE("\thwnd %p [%p] -> hrgn [%p], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 629
 630     /*
 631      * Check if this window should delay it's processing of WM_NCPAINT.
 632      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 633      */
 634     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr->hwndSelf, 0) )
 635         ex |= RDW_EX_DELAY_NCPAINT;
 636
 637     if (flags & RDW_UPDATENOW)
 638     {
 639         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 640             SendMessageW( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 641     }
 642     else if (flags & RDW_ERASENOW)
 643     {
 644         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 645         HRGN hrgnRet;
 646
 647         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 648                                   hrgn,
 649                                   UNC_REGION | UNC_CHECK |
 650                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 651
 652         if( hrgnRet )
 653         {
 654             if( hrgnRet > (HRGN)1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 655             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 656             {
 657                 if( bIcon ) dcx |= DCX_WINDOW;
 658                 else
 659                 if( hrgnRet )
 660                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 661                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 662                 else
 663                     dcx &= ~DCX_INTERSECTRGN;
 664                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 665                 {
 666                     if (SendMessageW( hWnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
 667                                       (WPARAM)hDC, 0 ))
 668                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 669                     ReleaseDC( hWnd, hDC );
 670                 }
 671             }
 672         }
 673     }
 674
 675     if( !IsWindow(hWnd) ) return hrgn;
 676
 677       /* ... and its child windows */
 678
 679     if(!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 680        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 681     {
 682         HWND *list, *phwnd;
 683
 684         if( (list = WIN_ListChildren( wndPtr->hwndSelf )) )
 685         {
 686             for (phwnd = list; *phwnd; phwnd++)
 687             {
 688                 if (!(wndPtr = WIN_FindWndPtr( *phwnd ))) continue;
 689                 if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 690                      (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 691                     hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 692                 WIN_ReleaseWndPtr(wndPtr);
 693             }
 694             HeapFree( GetProcessHeap(), 0, list );
 695         }
 696     }
 697
 698     return hrgn;
 699 }
 700
 701
 702 /***********************************************************************
 703  *           dump_rdw_flags
 704  */
 705 static void dump_rdw_flags(UINT flags)
 706 {
 707     TRACE("flags:");
 708     if (flags & RDW_INVALIDATE) TRACE(" RDW_INVALIDATE");
 709     if (flags & RDW_INTERNALPAINT) TRACE(" RDW_INTERNALPAINT");
 710     if (flags & RDW_ERASE) TRACE(" RDW_ERASE");
 711     if (flags & RDW_VALIDATE) TRACE(" RDW_VALIDATE");
 712     if (flags & RDW_NOINTERNALPAINT) TRACE(" RDW_NOINTERNALPAINT");
 713     if (flags & RDW_NOERASE) TRACE(" RDW_NOERASE");
 714     if (flags & RDW_NOCHILDREN) TRACE(" RDW_NOCHILDREN");
 715     if (flags & RDW_ALLCHILDREN) TRACE(" RDW_ALLCHILDREN");
 716     if (flags & RDW_UPDATENOW) TRACE(" RDW_UPDATENOW");
 717     if (flags & RDW_ERASENOW) TRACE(" RDW_ERASENOW");
 718     if (flags & RDW_FRAME) TRACE(" RDW_FRAME");
 719     if (flags & RDW_NOFRAME) TRACE(" RDW_NOFRAME");
 720
 721 #define RDW_FLAGS \
 722     (RDW_INVALIDATE | \
 723     RDW_INTERNALPAINT | \
 724     RDW_ERASE | \
 725     RDW_VALIDATE | \
 726     RDW_NOINTERNALPAINT | \
 727     RDW_NOERASE | \
 728     RDW_NOCHILDREN | \
 729     RDW_ALLCHILDREN | \
 730     RDW_UPDATENOW | \
 731     RDW_ERASENOW | \
 732     RDW_FRAME | \
 733     RDW_NOFRAME)
 734
 735     if (flags & ~RDW_FLAGS) TRACE(" %04x", flags & ~RDW_FLAGS);
 736     TRACE("\n");
 737 #undef RDW_FLAGS
 738 }
 739
 740
 741 /***********************************************************************
 742  *              RedrawWindow (USER32.@)
 743  */
 744 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 745                               HRGN hrgnUpdate, UINT flags )
 746 {
 747     HRGN hRgn = 0;
 748     RECT r, r2;
 749     POINT pt;
 750     WND* wndPtr;
 751
 752     if (!hwnd) hwnd = GetDesktopWindow();
 753
 754     /* check if the window or its parents are visible/not minimized */
 755
 756     if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
 757
 758     /* process pending events and messages before painting */
 759     if (flags & RDW_UPDATENOW)
 760         MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
 761
 762     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 763     if (TRACE_ON(win))
 764     {
 765         if( hrgnUpdate )
 766         {
 767             GetRgnBox( hrgnUpdate, &r );
 768             TRACE( "%p (%p) NULL %p box (%ld,%ld-%ld,%ld) flags=%04x\n",
 769                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags );
 770         }
 771         else
 772         {
 773             if( rectUpdate )
 774                 r = *rectUpdate;
 775             else
 776                 SetRectEmpty( &r );
 777             TRACE( "%p (%p) %s %ld,%ld-%ld,%ld %p flags=%04x\n",
 778                    hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 779                    r.top, r.right, r.bottom, hrgnUpdate, flags );
 780         }
 781         dump_rdw_flags(flags);
 782     }
 783
 784     /* prepare an update region in window coordinates */
 785
 786     if (((flags & (RDW_INVALIDATE|RDW_FRAME)) == (RDW_INVALIDATE|RDW_FRAME)) ||
 787         ((flags & (RDW_VALIDATE|RDW_NOFRAME)) == (RDW_VALIDATE|RDW_NOFRAME)))
 788         r = wndPtr->rectWindow;
 789     else
 790         r = wndPtr->rectClient;
 791
 792     pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 793     pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 794     OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 795
 796     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 797     {
 798         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 799          * and put a new region straight into wndPtr->hrgnUpdate
 800          * so that RDW_UpdateRgns() won't have to do any extra work.
 801          */
 802
 803         if( hrgnUpdate )
 804         {
 805             if( wndPtr->hrgnUpdate )
 806             {
 807                 hRgn = CreateRectRgn( 0, 0, 0, 0 );
 808                 CombineRgn( hRgn, hrgnUpdate, 0, RGN_COPY );
 809                 OffsetRgn( hRgn, pt.x, pt.y );
 810             }
 811             else
 812             {
 813                 wndPtr->hrgnUpdate = crop_rgn( 0, hrgnUpdate, &r );
 814                 OffsetRgn( wndPtr->hrgnUpdate, pt.x, pt.y );
 815             }
 816         }
 817         else if( rectUpdate )
 818         {
 819             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 820             OffsetRect( &r2, pt.x, pt.y );
 821             if( wndPtr->hrgnUpdate == 0 )
 822                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 823             else
 824                 hRgn = CreateRectRgnIndirect( &r2 );
 825         }
 826         else /* entire window or client depending on RDW_FRAME */
 827         {
 828             if( flags & RDW_FRAME )
 829             {
 830                 if (wndPtr->hrgnUpdate) hRgn = (HRGN)1;
 831                 else wndPtr->hrgnUpdate = (HRGN)1;
 832             }
 833             else
 834             {
 835                 GETCLIENTRECTW( wndPtr, r2 );
 836                 if( wndPtr->hrgnUpdate == 0 )
 837                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 838                 else
 839                     hRgn = CreateRectRgnIndirect( &r2 );
 840             }
 841         }
 842     }
 843     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 844     {
 845         /* In this we cannot leave with zero hRgn */
 846         if( hrgnUpdate )
 847         {
 848             hRgn = crop_rgn( hRgn, hrgnUpdate,  &r );
 849             OffsetRgn( hRgn, pt.x, pt.y );
 850             GetRgnBox( hRgn, &r2 );
 851             if( IsRectEmpty( &r2 ) ) goto END;
 852         }
 853         else if( rectUpdate )
 854         {
 855             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 856                 OffsetRect( &r2, pt.x, pt.y );
 857             hRgn = CreateRectRgnIndirect( &r2 );
 858         }
 859         else /* entire window or client depending on RDW_NOFRAME */
 860         {
 861             if( flags & RDW_NOFRAME )
 862                 hRgn = (HRGN)1;
 863             else
 864             {
 865                 GETCLIENTRECTW( wndPtr, r2 );
 866                 hRgn = CreateRectRgnIndirect( &r2 );
 867             }
 868         }
 869     }
 870
 871     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 872
 873     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 874
 875     /* Erase/update windows, from now on hRgn is a scratch region */
 876
 877     hRgn = RDW_Paint( wndPtr, (hRgn == (HRGN)1) ? 0 : hRgn, flags, 0 );
 878
 879 END:
 880     if( hRgn > (HRGN)1 && (hRgn != hrgnUpdate) )
 881         DeleteObject(hRgn );
 882     WIN_ReleaseWndPtr(wndPtr);
 883     return TRUE;
 884 }
 885
 886
 887 /***********************************************************************
 888  *              UpdateWindow (USER32.@)
 889  */
 890 BOOL WINAPI UpdateWindow( HWND hwnd )
 891 {
 892     return RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
 893 }
 894
 895
 896 /***********************************************************************
 897  *              InvalidateRgn (USER32.@)
 898  */
 899 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 900 {
 901     return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 902 }
 903
 904
 905 /***********************************************************************
 906  *              InvalidateRect (USER32.@)
 907  */
 908 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
 909 {
 910     return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 911 }
 912
 913
 914 /***********************************************************************
 915  *              ValidateRgn (USER32.@)
 916  */
 917 BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
 918 {
 919     return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
 920 }
 921
 922
 923 /***********************************************************************
 924  *              ValidateRect (USER32.@)
 925  */
 926 BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
 927 {
 928     return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 929 }
 930
 931
 932 /***********************************************************************
 933  *              GetUpdateRect (USER32.@)
 934  */
 935 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
 936 {
 937     BOOL retvalue;
 938     WND * wndPtr = WIN_FindWndPtr( hwnd );
 939     if (!wndPtr) return FALSE;
 940
 941     if (rect)
 942     {
 943         if (wndPtr->hrgnUpdate > (HRGN)1)
 944         {
 945             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
 946             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
 947             {
 948                 retvalue = FALSE;
 949                 goto END;
 950             }
 951             GetRgnBox( hrgn, rect );
 952             DeleteObject( hrgn );
 953             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
 954             {
 955                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
 956                 {
 957                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
 958                 }
 959             }
 960         }
 961         else
 962         if( wndPtr->hrgnUpdate == (HRGN)1 )
 963         {
 964             GetClientRect( hwnd, rect );
 965             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
 966         }
 967         else
 968             SetRectEmpty( rect );
 969     }
 970     retvalue = (wndPtr->hrgnUpdate >= (HRGN)1);
 971 END:
 972     WIN_ReleaseWndPtr(wndPtr);
 973     return retvalue;
 974 }
 975
 976
 977 /***********************************************************************
 978  *              GetUpdateRgn (USER32.@)
 979  */
 980 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 981 {
 982     INT retval;
 983     WND * wndPtr = WIN_FindWndPtr( hwnd );
 984     if (!wndPtr) return ERROR;
 985
 986     if (wndPtr->hrgnUpdate == 0)
 987     {
 988         SetRectRgn( hrgn, 0, 0, 0, 0 );
 989         retval = NULLREGION;
 990         goto END;
 991     }
 992     else
 993     if (wndPtr->hrgnUpdate == (HRGN)1)
 994     {
 995         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
 996                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
 997         retval = SIMPLEREGION;
 998     }
 999     else
1000     {
1001         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
1002         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1003                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
1004     }
1005     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
1006 END:
1007     WIN_ReleaseWndPtr(wndPtr);
1008     return retval;
1009 }
1010
1011
1012 /***********************************************************************
1013  *              ExcludeUpdateRgn (USER32.@)
1014  */
1015 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
1016 {
1017     RECT rect;
1018     WND * wndPtr;
1019
1020     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
1021
1022     if (wndPtr->hrgnUpdate)
1023     {
1024         INT ret;
1025         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
1026                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
1027                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
1028                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
1029         if( wndPtr->hrgnUpdate > (HRGN)1 )
1030         {
1031             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
1032             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1033                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
1034         }
1035
1036         /* do ugly coordinate translations in dce.c */
1037
1038         ret = DCE_ExcludeRgn( hdc, hwnd, hrgn );
1039         DeleteObject( hrgn );
1040         WIN_ReleaseWndPtr(wndPtr);
1041         return ret;
1042     }
1043     WIN_ReleaseWndPtr(wndPtr);
1044     return GetClipBox( hdc, &rect );
1045 }
1046
1047
1048
1049 /***********************************************************************
1050  *              FillRect (USER.81)
1051  * NOTE
1052  *   The Win16 variant doesn't support special color brushes like
1053  *   the Win32 one, despite the fact that Win16, as well as Win32,
1054  *   supports special background brushes for a window class.
1055  */
1056 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1057 {
1058     HBRUSH prevBrush;
1059
1060     /* coordinates are logical so we cannot fast-check 'rect',
1061      * it will be done later in the PatBlt().
1062      */
1063
1064     if (!(prevBrush = SelectObject( HDC_32(hdc), HBRUSH_32(hbrush) ))) return 0;
1065     PatBlt( HDC_32(hdc), rect->left, rect->top,
1066               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1067     SelectObject( HDC_32(hdc), prevBrush );
1068     return 1;
1069 }
1070
1071
1072 /***********************************************************************
1073  *              FillRect (USER32.@)
1074  */
1075 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1076 {
1077     HBRUSH prevBrush;
1078
1079     if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
1080         hbrush = GetSysColorBrush( (INT) hbrush - 1 );
1081     }
1082
1083     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1084     PatBlt( hdc, rect->left, rect->top,
1085               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1086     SelectObject( hdc, prevBrush );
1087     return 1;
1088 }
1089
1090
1091 /***********************************************************************
1092  *              InvertRect (USER.82)
1093  */
1094 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1095 {
1096     PatBlt( HDC_32(hdc), rect->left, rect->top,
1097               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1098 }
1099
1100
1101 /***********************************************************************
1102  *              InvertRect (USER32.@)
1103  */
1104 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1105 {
1106     return PatBlt( hdc, rect->left, rect->top,
1107                      rect->right - rect->left, rect->bottom - rect->top,
1108                      DSTINVERT );
1109 }
1110
1111
1112 /***********************************************************************
1113  *              FrameRect (USER32.@)
1114  */
1115 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1116 {
1117     HBRUSH prevBrush;
1118     RECT r = *rect;
1119
1120     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1121     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1122
1123     PatBlt( hdc, r.left, r.top, 1,
1124               r.bottom - r.top, PATCOPY );
1125     PatBlt( hdc, r.right - 1, r.top, 1,
1126               r.bottom - r.top, PATCOPY );
1127     PatBlt( hdc, r.left, r.top,
1128               r.right - r.left, 1, PATCOPY );
1129     PatBlt( hdc, r.left, r.bottom - 1,
1130               r.right - r.left, 1, PATCOPY );
1131
1132     SelectObject( hdc, prevBrush );
1133     return TRUE;
1134 }
1135
1136
1137 /***********************************************************************
1138  *              FrameRect (USER.83)
1139  */
1140 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1141 {
1142     RECT rect;
1143     CONV_RECT16TO32( rect16, &rect );
1144     return FrameRect( HDC_32(hdc), &rect, HBRUSH_32(hbrush) );
1145 }
1146
1147
1148 /***********************************************************************
1149  *              DrawFocusRect (USER.466)
1150  */
1151 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1152 {
1153     RECT rect32;
1154     CONV_RECT16TO32( rc, &rect32 );
1155     DrawFocusRect( HDC_32(hdc), &rect32 );
1156 }
1157
1158
1159 /***********************************************************************
1160  *              DrawFocusRect (USER32.@)
1161  *
1162  * FIXME: PatBlt(PATINVERT) with background brush.
1163  */
1164 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1165 {
1166     HBRUSH hOldBrush;
1167     HPEN hOldPen, hNewPen;
1168     INT oldDrawMode, oldBkMode;
1169
1170     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1171     hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
1172     hOldPen = SelectObject(hdc, hNewPen);
1173     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1174     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1175
1176     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1177
1178     SetBkMode(hdc, oldBkMode);
1179     SetROP2(hdc, oldDrawMode);
1180     SelectObject(hdc, hOldPen);
1181     DeleteObject(hNewPen);
1182     SelectObject(hdc, hOldBrush);
1183
1184     return TRUE;
1185 }
1186
1187
1188 /**********************************************************************
1189  *              DrawAnimatedRects (USER32.@)
1190  */
1191 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1192                                    const RECT* lprcFrom,
1193                                    const RECT* lprcTo )
1194 {
1195     FIXME_(win)("(%p,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1196     return TRUE;
1197 }
1198
1199
1200 /**********************************************************************
1201  *          PAINTING_DrawStateJam
1202  *
1203  * Jams in the requested type in the dc
1204  */
1205 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1206                                   DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1207                                   LPRECT rc, UINT dtflags, BOOL unicode )
1208 {
1209     HDC memdc;
1210     HBITMAP hbmsave;
1211     BOOL retval;
1212     INT cx = rc->right - rc->left;
1213     INT cy = rc->bottom - rc->top;
1214
1215     switch(opcode)
1216     {
1217     case DST_TEXT:
1218     case DST_PREFIXTEXT:
1219         if(unicode)
1220             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1221         else
1222             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1223
1224     case DST_ICON:
1225         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1226
1227     case DST_BITMAP:
1228         memdc = CreateCompatibleDC(hdc);
1229         if(!memdc) return FALSE;
1230         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1231         if(!hbmsave)
1232         {
1233             DeleteDC(memdc);
1234             return FALSE;
1235         }
1236         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1237         SelectObject(memdc, hbmsave);
1238         DeleteDC(memdc);
1239         return retval;
1240
1241     case DST_COMPLEX:
1242         if(func) {
1243             BOOL bRet;
1244             /* DRAWSTATEPROC assumes that it draws at the center of coordinates  */
1245
1246             OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
1247             bRet = func(hdc, lp, wp, cx, cy);
1248             /* Restore origin */
1249             OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
1250             return bRet;
1251         } else
1252             return FALSE;
1253     }
1254     return FALSE;
1255 }
1256
1257 /**********************************************************************
1258  *      PAINTING_DrawState()
1259  */
1260 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr, DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1261                                INT x, INT y, INT cx, INT cy, UINT flags, BOOL unicode )
1262 {
1263     HBITMAP hbm, hbmsave;
1264     HFONT hfsave;
1265     HBRUSH hbsave, hbrtmp = 0;
1266     HDC memdc;
1267     RECT rc;
1268     UINT dtflags = DT_NOCLIP;
1269     COLORREF fg, bg;
1270     UINT opcode = flags & 0xf;
1271     INT len = wp;
1272     BOOL retval, tmp;
1273
1274     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1275     {
1276         if(unicode)
1277             len = strlenW((LPWSTR)lp);
1278         else
1279             len = strlen((LPSTR)lp);
1280     }
1281
1282     /* Find out what size the image has if not given by caller */
1283     if(!cx || !cy)
1284     {
1285         SIZE s;
1286         CURSORICONINFO *ici;
1287         BITMAP bm;
1288
1289         switch(opcode)
1290         {
1291         case DST_TEXT:
1292         case DST_PREFIXTEXT:
1293             if(unicode)
1294                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1295             else
1296                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1297             if(!retval) return FALSE;
1298             break;
1299
1300         case DST_ICON:
1301             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1302             if(!ici) return FALSE;
1303             s.cx = ici->nWidth;
1304             s.cy = ici->nHeight;
1305             GlobalUnlock16((HGLOBAL16)lp);
1306             break;
1307
1308         case DST_BITMAP:
1309             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1310                 return FALSE;
1311             s.cx = bm.bmWidth;
1312             s.cy = bm.bmHeight;
1313             break;
1314
1315         case DST_COMPLEX: /* cx and cy must be set in this mode */
1316             return FALSE;
1317         }
1318
1319         if(!cx) cx = s.cx;
1320         if(!cy) cy = s.cy;
1321     }
1322
1323     rc.left   = x;
1324     rc.top    = y;
1325     rc.right  = x + cx;
1326     rc.bottom = y + cy;
1327
1328     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1329         dtflags |= DT_RIGHT;
1330     if(opcode == DST_TEXT)
1331         dtflags |= DT_NOPREFIX;
1332
1333     /* For DSS_NORMAL we just jam in the image and return */
1334     if((flags & 0x7ff0) == DSS_NORMAL)
1335     {
1336         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode);
1337     }
1338
1339     /* For all other states we need to convert the image to B/W in a local bitmap */
1340     /* before it is displayed */
1341     fg = SetTextColor(hdc, RGB(0, 0, 0));
1342     bg = SetBkColor(hdc, RGB(255, 255, 255));
1343     hbm = NULL; hbmsave = NULL;
1344     memdc = NULL; hbsave = NULL;
1345     retval = FALSE; /* assume failure */
1346
1347     /* From here on we must use "goto cleanup" when something goes wrong */
1348     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1349     if(!hbm) goto cleanup;
1350     memdc   = CreateCompatibleDC(hdc);
1351     if(!memdc) goto cleanup;
1352     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1353     if(!hbmsave) goto cleanup;
1354     rc.left = rc.top = 0;
1355     rc.right = cx;
1356     rc.bottom = cy;
1357     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1358     SetBkColor(memdc, RGB(255, 255, 255));
1359     SetTextColor(memdc, RGB(0, 0, 0));
1360     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1361
1362     /* DST_COMPLEX may draw text as well,
1363      * so we must be sure that correct font is selected
1364      */
1365     if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
1366     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode);
1367     if(hfsave) SelectObject(memdc, hfsave);
1368     if(!tmp) goto cleanup;
1369
1370     /* This state cause the image to be dithered */
1371     if(flags & DSS_UNION)
1372     {
1373         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1374         if(!hbsave) goto cleanup;
1375         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1376         SelectObject(memdc, hbsave);
1377         if(!tmp) goto cleanup;
1378     }
1379
1380     if (flags & DSS_DISABLED)
1381        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
1382     else if (flags & DSS_DEFAULT)
1383        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1384
1385     /* Draw light or dark shadow */
1386     if (flags & (DSS_DISABLED|DSS_DEFAULT))
1387     {
1388        if(!hbrtmp) goto cleanup;
1389        hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
1390        if(!hbsave) goto cleanup;
1391        if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1392        SelectObject(hdc, hbsave);
1393        DeleteObject(hbrtmp);
1394        hbrtmp = 0;
1395     }
1396
1397     if (flags & DSS_DISABLED)
1398     {
1399        hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1400        if(!hbrtmp) goto cleanup;
1401     }
1402     else if (!hbr)
1403     {
1404        hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
1405     }
1406
1407     hbsave = (HBRUSH)SelectObject(hdc, hbr);
1408
1409     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1410
1411     retval = TRUE; /* We succeeded */
1412
1413 cleanup:
1414     SetTextColor(hdc, fg);
1415     SetBkColor(hdc, bg);
1416
1417     if(hbsave)  SelectObject(hdc, hbsave);
1418     if(hbmsave) SelectObject(memdc, hbmsave);
1419     if(hbrtmp)  DeleteObject(hbrtmp);
1420     if(hbm)     DeleteObject(hbm);
1421     if(memdc)   DeleteDC(memdc);
1422
1423     return retval;
1424 }
1425
1426 /**********************************************************************
1427  *              DrawStateA (USER32.@)
1428  */
1429 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1430                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1431                    INT x, INT y, INT cx, INT cy, UINT flags)
1432 {
1433     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE);
1434 }
1435
1436 /**********************************************************************
1437  *              DrawStateW (USER32.@)
1438  */
1439 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1440                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1441                    INT x, INT y, INT cx, INT cy, UINT flags)
1442 {
1443     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE);
1444 }
1445
1446
1447 /***********************************************************************
1448  *              SelectPalette (Not a Windows API)
1449  */
1450 HPALETTE WINAPI SelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
1451 {
1452     WORD wBkgPalette = 1;
1453
1454     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
1455     {
1456         HWND hwnd = WindowFromDC( hDC );
1457         if (hwnd)
1458         {
1459             HWND hForeground = GetForegroundWindow();
1460             /* set primary palette if it's related to current active */
1461             if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
1462         }
1463     }
1464     return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
1465 }
1466
1467
1468 /***********************************************************************
1469  *              UserRealizePalette (USER32.@)
1470  */
1471 UINT WINAPI UserRealizePalette( HDC hDC )
1472 {
1473     UINT realized = pfnGDIRealizePalette( hDC );
1474
1475     /* do not send anything if no colors were changed */
1476     if (realized && IsDCCurrentPalette16( HDC_16(hDC) ))
1477     {
1478         /* send palette change notification */
1479         HWND hWnd = WindowFromDC( hDC );
1480         if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0,
1481                                        SMTO_ABORTIFHUNG, 2000, NULL );
1482     }
1483     return realized;
1484 }