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 "gdi.h"
  35 #include "user.h"
  36 #include "win.h"
  37 #include "message.h"
  38 #include "dce.h"
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(win);
  42 WINE_DECLARE_DEBUG_CHANNEL(nonclient);
  43
  44 /* client rect in window coordinates */
  45
  46 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  47                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  48                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  49                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  50
  51   /* PAINT_RedrawWindow() control flags */
  52 #define RDW_EX_DELAY_NCPAINT    0x0020
  53
  54   /* WIN_UpdateNCRgn() flags */
  55 #define UNC_CHECK               0x0001
  56 #define UNC_ENTIRE              0x0002
  57 #define UNC_REGION              0x0004
  58 #define UNC_UPDATE              0x0008
  59 #define UNC_DELAY_NCPAINT       0x0010
  60 #define UNC_IN_BEGINPAINT       0x0020
  61
  62   /* Last COLOR id */
  63 #define COLOR_MAX   COLOR_GRADIENTINACTIVECAPTION
  64
  65 HPALETTE (WINAPI *pfnGDISelectPalette)(HDC hdc, HPALETTE hpal, WORD bkgnd ) = NULL;
  66 UINT (WINAPI *pfnGDIRealizePalette)(HDC hdc) = NULL;
  67
  68
  69 /***********************************************************************
  70  *           add_paint_count
  71  *
  72  * Add an increment (normally 1 or -1) to the current paint count of a window.
  73  */
  74 static void add_paint_count( HWND hwnd, int incr )
  75 {
  76     SERVER_START_REQ( inc_window_paint_count )
  77     {
  78         req->handle = hwnd;
  79         req->incr   = incr;
  80         wine_server_call( req );
  81     }
  82     SERVER_END_REQ;
  83 }
  84
  85
  86 /***********************************************************************
  87  *           crop_rgn
  88  *
  89  * hSrc:        Region to crop.
  90  * lpRect:      Clipping rectangle.
  91  *
  92  * hDst: Region to hold the result (a new region is created if it's 0).
  93  *       Allowed to be the same region as hSrc in which case everything
  94  *       will be done in place, with no memory reallocations.
  95  *
  96  * Returns: hDst if success, 0 otherwise.
  97  */
  98 static HRGN crop_rgn( HRGN hDst, HRGN hSrc, const RECT *rect )
  99 {
 100     HRGN h = CreateRectRgnIndirect( rect );
 101     if (hDst == 0) hDst = h;
 102     CombineRgn( hDst, hSrc, h, RGN_AND );
 103     if (hDst != h) DeleteObject( h );
 104     return hDst;
 105 }
 106
 107
 108 /***********************************************************************
 109  *           WIN_HaveToDelayNCPAINT
 110  *
 111  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
 112  * is generated as soon as a region intersecting the non-client area
 113  * of a window is invalidated.
 114  *
 115  * This technique will work fine for all windows whose parents
 116  * have the WS_CLIPCHILDREN style. When the parents have that style,
 117  * they are not going to override the contents of their children.
 118  * However, when the parent doesn't have that style, Windows relies
 119  * on a "painter's algorithm" to display the contents of the windows.
 120  * That is, windows are painted from back to front. This includes the
 121  * non-client area.
 122  *
 123  * This method looks at the current state of a window to determine
 124  * if the sending of the WM_NCPAINT message should be delayed until
 125  * the BeginPaint call.
 126  *
 127  * PARAMS:
 128  *   wndPtr   - A Locked window pointer to the window we're
 129  *              examining.
 130  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
 131  *              function. This is a shortcut for the cases when
 132  *              we already know when to avoid scanning all the
 133  *              parents of a window. If you already know that this
 134  *              window's NCPAINT should be delayed, set the
 135  *              UNC_DELAY_NCPAINT flag for this parameter.
 136  *
 137  *              This shortcut behavior is implemented in the
 138  *              RDW_Paint() method.
 139  *
 140  */
 141 static BOOL WIN_HaveToDelayNCPAINT( HWND hwnd, UINT uncFlags)
 142 {
 143   /*
 144    * Test the shortcut first. (duh)
 145    */
 146   if (uncFlags & UNC_DELAY_NCPAINT)
 147     return TRUE;
 148
 149   /*
 150    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
 151    * method only. This is another shortcut to avoid going
 152    * up the parent's chain of the window to finally
 153    * figure-out that none of them has an invalid region.
 154    */
 155   if (uncFlags & UNC_IN_BEGINPAINT)
 156     return FALSE;
 157
 158   /*
 159    * Scan all the parents of this window to find a window
 160    * that doesn't have the WS_CLIPCHILDREN style and that
 161    * has an invalid region.
 162    */
 163   while ((hwnd = GetAncestor( hwnd, GA_PARENT )))
 164   {
 165       WND* parentWnd = WIN_FindWndPtr( hwnd );
 166       if (parentWnd && !(parentWnd->dwStyle & WS_CLIPCHILDREN) && parentWnd->hrgnUpdate)
 167       {
 168           WIN_ReleaseWndPtr( parentWnd );
 169           return TRUE;
 170       }
 171       WIN_ReleaseWndPtr( parentWnd );
 172   }
 173   return FALSE;
 174 }
 175
 176 /***********************************************************************
 177  *           WIN_UpdateNCRgn
 178  *
 179  *  Things to do:
 180  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 181  *      Crop hrgnUpdate to a client rect, especially if it 1.
 182  *      If UNC_REGION is set return update region for the client rect.
 183  *
 184  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 185  *        The trick is that when the returned region handle may be different from hRgn.
 186  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 187  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 188  *        a DC without extra clipping region.
 189  */
 190 static HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 191 {
 192     RECT  r;
 193     HRGN  hClip = 0;
 194     HRGN  hrgnRet = 0;
 195
 196     TRACE_(nonclient)("hwnd %p [%p] hrgn %p, unc %04x, ncf %i\n",
 197                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 198
 199     /* desktop window doesn't have a nonclient area */
 200     if(wnd->hwndSelf == GetDesktopWindow())
 201     {
 202         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 203         if( wnd->hrgnUpdate > (HRGN)1 )
 204         {
 205             if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 206             CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 207             hrgnRet = hRgn;
 208         }
 209         else
 210         {
 211             hrgnRet = wnd->hrgnUpdate;
 212         }
 213         return hrgnRet;
 214     }
 215
 216     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 217         !(wnd->flags & WIN_NCACTIVATED) )
 218     {
 219         wnd->flags |= WIN_NCACTIVATED;
 220         uncFlags |= UNC_ENTIRE;
 221     }
 222
 223     /*
 224      * If the window's non-client area needs to be painted,
 225      */
 226     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 227          !WIN_HaveToDelayNCPAINT(wnd->hwndSelf, uncFlags) )
 228     {
 229             RECT r2, r3;
 230
 231             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 232             GETCLIENTRECTW( wnd, r );
 233
 234             TRACE_(nonclient)( "\tclient box (%ld,%ld-%ld,%ld), hrgnUpdate %p\n",
 235                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 236             if( wnd->hrgnUpdate > (HRGN)1 )
 237             {
 238                 /* Check if update rgn overlaps with nonclient area */
 239
 240                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 241                 UnionRect( &r3, &r2, &r );
 242                 if( r3.left != r.left || r3.top != r.top ||
 243                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 244                 {
 245                     /* crop hrgnUpdate, save old one in hClip - the only
 246                      * case that places a valid region handle in hClip */
 247
 248                     hClip = wnd->hrgnUpdate;
 249                     wnd->hrgnUpdate = crop_rgn( hRgn, hClip, &r );
 250                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 251                 }
 252
 253                 if( uncFlags & UNC_CHECK )
 254                 {
 255                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 256                     if( IsRectEmpty( &r3 ) )
 257                     {
 258                         /* delete the update region since all invalid
 259                          * parts were in the nonclient area */
 260
 261                         DeleteObject( wnd->hrgnUpdate );
 262                         wnd->hrgnUpdate = 0;
 263                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 264                             add_paint_count( wnd->hwndSelf, -1 );
 265
 266                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 267                     }
 268                 }
 269
 270                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 271             }
 272             else
 273             if( wnd->hrgnUpdate == (HRGN)1 )/* entire window */
 274             {
 275                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 276                 if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1;
 277                 uncFlags |= UNC_ENTIRE;
 278             }
 279     }
 280     else /* no WM_NCPAINT unless forced */
 281     {
 282         if( wnd->hrgnUpdate >  (HRGN)1 )
 283         {
 284 copyrgn:
 285             if( uncFlags & UNC_REGION )
 286             {
 287                 if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 288                 CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 289                 hrgnRet = hRgn;
 290             }
 291         }
 292         else
 293         if( wnd->hrgnUpdate == (HRGN)1 && (uncFlags & UNC_UPDATE) )
 294         {
 295             GETCLIENTRECTW( wnd, r );
 296             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 297             if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1;
 298         }
 299     }
 300
 301     if(!hClip && (uncFlags & UNC_ENTIRE) )
 302     {
 303         /* still don't do anything if there is no nonclient area */
 304         hClip = (HRGN)(memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 305     }
 306
 307     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 308     {
 309         if ( hClip == hrgnRet && hrgnRet > (HRGN)1 ) {
 310             hClip = CreateRectRgn( 0, 0, 0, 0 );
 311             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 312         }
 313
 314         SendMessageA( wnd->hwndSelf, WM_NCPAINT, (WPARAM)hClip, 0L );
 315         if( (hClip > (HRGN)1) && (hClip != hRgn) && (hClip != hrgnRet) )
 316             DeleteObject( hClip );
 317         /*
 318          * Since all Window locks are suspended while processing the WM_NCPAINT
 319          * we want to make sure the window still exists before continuing.
 320          */
 321         if (!IsWindow(wnd->hwndSelf))
 322         {
 323           DeleteObject(hrgnRet);
 324           hrgnRet=0;
 325         }
 326     }
 327
 328     TRACE_(nonclient)("returning %p (hClip = %p, hrgnUpdate = %p)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 329
 330     return hrgnRet;
 331 }
 332
 333
 334 /***********************************************************************
 335  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 336  *
 337  *  Validate the portions of parents that are covered by a validated child
 338  *  wndPtr = child
 339  */
 340 static void RDW_ValidateParent(WND *wndChild)
 341 {
 342     HWND parent;
 343     HRGN hrg;
 344
 345     if (wndChild->hrgnUpdate == (HRGN)1 ) {
 346         RECT r;
 347         r.left = 0;
 348         r.top = 0;
 349         r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 350         r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 351         hrg = CreateRectRgnIndirect( &r );
 352     } else
 353         hrg = wndChild->hrgnUpdate;
 354
 355     parent = GetAncestor( wndChild->hwndSelf, GA_PARENT );
 356     while (parent && parent != GetDesktopWindow())
 357     {
 358         WND *wndParent = WIN_FindWndPtr( parent );
 359         if (wndParent && !(wndParent->dwStyle & WS_CLIPCHILDREN))
 360         {
 361             if (wndParent->hrgnUpdate != 0)
 362             {
 363                 POINT ptOffset;
 364                 RECT rect, rectParent;
 365                 if( wndParent->hrgnUpdate == (HRGN)1 )
 366                 {
 367                    RECT r;
 368
 369                    r.left = 0;
 370                    r.top = 0;
 371                    r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 372                    r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 373
 374                    wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 375                 }
 376                 /* we must offset the child region by the offset of the child rect in the parent */
 377                 GetWindowRect(wndParent->hwndSelf, &rectParent);
 378                 GetWindowRect(wndChild->hwndSelf, &rect);
 379                 ptOffset.x = rect.left - rectParent.left;
 380                 ptOffset.y = rect.top - rectParent.top;
 381                 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 382                 if (CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF ) == NULLREGION)
 383                 {
 384                     /* the update region has become empty */
 385                     DeleteObject( wndParent->hrgnUpdate );
 386                     wndParent->hrgnUpdate = 0;
 387                     wndParent->flags &= ~WIN_NEEDS_ERASEBKGND;
 388                     if( !(wndParent->flags & WIN_INTERNAL_PAINT) )
 389                         add_paint_count( wndParent->hwndSelf, -1 );
 390                 }
 391                 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 392             }
 393         }
 394         WIN_ReleaseWndPtr( wndParent );
 395         parent = GetAncestor( parent, GA_PARENT );
 396     }
 397     if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 398 }
 399
 400 /***********************************************************************
 401  *              RDW_UpdateRgns [RedrawWindow() helper]
 402  *
 403  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 404  *  regions of windows that overlap it. Also, manages internal paint flags.
 405  *
 406  *  NOTE: Walks the window tree so the caller must lock it.
 407  *        MUST preserve hRgn (can modify but then has to restore).
 408  */
 409 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 410 {
 411     /*
 412      * Called only when one of the following is set:
 413      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 414      */
 415
 416     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 417     BOOL bChildren =  (!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 418                        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 419     RECT r;
 420
 421     r.left = 0;
 422     r.top = 0;
 423     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 424     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 425
 426     TRACE("\thwnd %p [%p] -> hrgn [%p], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 427
 428     if( flags & RDW_INVALIDATE )
 429     {
 430         if( hRgn > (HRGN)1 )
 431         {
 432             switch ((UINT)wndPtr->hrgnUpdate)
 433             {
 434                 default:
 435                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 436                         /* fall through */
 437                 case 0:
 438                         wndPtr->hrgnUpdate = crop_rgn( wndPtr->hrgnUpdate,
 439                                                        wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 440                                                        &r );
 441                         if( !bHadOne )
 442                         {
 443                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 444                             if( IsRectEmpty( &r ) )
 445                             {
 446                                 DeleteObject( wndPtr->hrgnUpdate );
 447                                 wndPtr->hrgnUpdate = 0;
 448                                 goto end;
 449                             }
 450                         }
 451                         break;
 452                 case 1: /* already an entire window */
 453                         break;
 454             }
 455         }
 456         else if( hRgn == (HRGN)1 )
 457         {
 458             if( wndPtr->hrgnUpdate > (HRGN)1 )
 459                 DeleteObject( wndPtr->hrgnUpdate );
 460             wndPtr->hrgnUpdate = (HRGN)1;
 461         }
 462         else
 463             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 464
 465         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 466             add_paint_count( wndPtr->hwndSelf, 1 );
 467
 468         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 469         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 470         flags    |= RDW_FRAME;
 471     }
 472     else if( flags & RDW_VALIDATE )
 473     {
 474         if( wndPtr->hrgnUpdate )
 475         {
 476             if( hRgn > (HRGN)1 )
 477             {
 478                 if( wndPtr->hrgnUpdate == (HRGN)1 )
 479                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 480
 481                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 482                     == NULLREGION )
 483                 {
 484                     DeleteObject( wndPtr->hrgnUpdate );
 485                     wndPtr->hrgnUpdate = 0;
 486                 }
 487             }
 488             else /* validate everything */
 489             {
 490                 if( wndPtr->hrgnUpdate > (HRGN)1 ) DeleteObject( wndPtr->hrgnUpdate );
 491                 wndPtr->hrgnUpdate = 0;
 492             }
 493
 494             if( !wndPtr->hrgnUpdate )
 495             {
 496                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 497                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 498                     add_paint_count( wndPtr->hwndSelf, -1 );
 499             }
 500         }
 501
 502         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 503         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 504
 505     }
 506
 507     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 508         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 509
 510     /* in/validate child windows that intersect with the region if it
 511      * is a valid handle. */
 512
 513     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 514     {
 515         HWND *list;
 516         if( hRgn > (HRGN)1 && bChildren && (list = WIN_ListChildren( wndPtr->hwndSelf )))
 517         {
 518             POINT ptTotal, prevOrigin = {0,0};
 519             POINT ptClient;
 520             INT i;
 521
 522             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 523             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 524
 525             for(i = ptTotal.x = ptTotal.y = 0; list[i]; i++)
 526             {
 527                 WND *wnd = WIN_FindWndPtr( list[i] );
 528                 if (!wnd) continue;
 529                 if( wnd->dwStyle & WS_VISIBLE )
 530                 {
 531                     POINT ptOffset;
 532
 533                     r.left = wnd->rectWindow.left + ptClient.x;
 534                     r.right = wnd->rectWindow.right + ptClient.x;
 535                     r.top = wnd->rectWindow.top + ptClient.y;
 536                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 537
 538                     ptOffset.x = r.left - prevOrigin.x;
 539                     ptOffset.y = r.top - prevOrigin.y;
 540                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 541
 542                     if( RectInRegion( hRgn, &r ) )
 543                     {
 544                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 545                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 546                         prevOrigin.x = r.left + ptTotal.x;
 547                         prevOrigin.y = r.top + ptTotal.y;
 548                         ptTotal.x += ptOffset.x;
 549                         ptTotal.y += ptOffset.y;
 550                     }
 551                 }
 552                 WIN_ReleaseWndPtr( wnd );
 553             }
 554             HeapFree( GetProcessHeap(), 0, list );
 555             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 556             bChildren = 0;
 557         }
 558     }
 559
 560     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 561
 562     if( bChildren )
 563     {
 564         HWND *list;
 565         if ((list = WIN_ListChildren( wndPtr->hwndSelf )))
 566         {
 567             INT i;
 568             for (i = 0; list[i]; i++)
 569             {
 570                 WND *wnd = WIN_FindWndPtr( list[i] );
 571                 if (!wnd) continue;
 572                 if( wnd->dwStyle & WS_VISIBLE )
 573                     RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 574                 WIN_ReleaseWndPtr( wnd );
 575             }
 576             HeapFree( GetProcessHeap(), 0, list );
 577         }
 578     }
 579
 580 end:
 581
 582     /* Set/clear internal paint flag */
 583
 584     if (flags & RDW_INTERNALPAINT)
 585     {
 586         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 587             add_paint_count( wndPtr->hwndSelf, 1 );
 588         wndPtr->flags |= WIN_INTERNAL_PAINT;
 589     }
 590     else if (flags & RDW_NOINTERNALPAINT)
 591     {
 592         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 593             add_paint_count( wndPtr->hwndSelf, -1 );
 594         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 595     }
 596 }
 597
 598 /***********************************************************************
 599  *           RDW_Paint [RedrawWindow() helper]
 600  *
 601  * Walks the window tree and paints/erases windows that have
 602  * nonzero update regions according to redraw flags. hrgn is a scratch
 603  * region passed down during recursion. Must not be 1.
 604  *
 605  */
 606 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 607 {
 608 /* NOTE: wndPtr is locked by caller.
 609  *
 610  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 611  * SendMessage() calls. This is a comment inside DefWindowProc() source
 612  * from 16-bit SDK:
 613  *
 614  *   This message avoids lots of inter-app message traffic
 615  *   by switching to the other task and continuing the
 616  *   recursion there.
 617  *
 618  * wParam         = flags
 619  * LOWORD(lParam) = hrgnClip
 620  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 621  *
 622  */
 623     HDC  hDC;
 624     HWND hWnd = wndPtr->hwndSelf;
 625     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassLongA(hWnd, GCL_HICON));
 626
 627       /* Erase/update the window itself ... */
 628
 629     TRACE("\thwnd %p [%p] -> hrgn [%p], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 630
 631     /*
 632      * Check if this window should delay it's processing of WM_NCPAINT.
 633      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 634      */
 635     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr->hwndSelf, 0) )
 636         ex |= RDW_EX_DELAY_NCPAINT;
 637
 638     if (flags & RDW_UPDATENOW)
 639     {
 640         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 641             SendMessageW( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 642     }
 643     else if (flags & RDW_ERASENOW)
 644     {
 645         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 646         HRGN hrgnRet;
 647
 648         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 649                                   hrgn,
 650                                   UNC_REGION | UNC_CHECK |
 651                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 652
 653         if( hrgnRet )
 654         {
 655             if( hrgnRet > (HRGN)1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 656             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 657             {
 658                 if( bIcon ) dcx |= DCX_WINDOW;
 659                 else
 660                 if( hrgnRet )
 661                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 662                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 663                 else
 664                     dcx &= ~DCX_INTERSECTRGN;
 665                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 666                 {
 667                     if (SendMessageW( hWnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
 668                                       (WPARAM)hDC, 0 ))
 669                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 670                     ReleaseDC( hWnd, hDC );
 671                 }
 672             }
 673         }
 674     }
 675
 676     if( !IsWindow(hWnd) ) return hrgn;
 677
 678       /* ... and its child windows */
 679
 680     if(!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 681        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 682     {
 683         HWND *list, *phwnd;
 684
 685         if( (list = WIN_ListChildren( wndPtr->hwndSelf )) )
 686         {
 687             for (phwnd = list; *phwnd; phwnd++)
 688             {
 689                 if (!(wndPtr = WIN_FindWndPtr( *phwnd ))) continue;
 690                 if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 691                      (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 692                     hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 693                 WIN_ReleaseWndPtr(wndPtr);
 694             }
 695             HeapFree( GetProcessHeap(), 0, list );
 696         }
 697     }
 698
 699     return hrgn;
 700 }
 701
 702
 703 /***********************************************************************
 704  *           dump_rdw_flags
 705  */
 706 static void dump_rdw_flags(UINT flags)
 707 {
 708     TRACE("flags:");
 709     if (flags & RDW_INVALIDATE) TRACE(" RDW_INVALIDATE");
 710     if (flags & RDW_INTERNALPAINT) TRACE(" RDW_INTERNALPAINT");
 711     if (flags & RDW_ERASE) TRACE(" RDW_ERASE");
 712     if (flags & RDW_VALIDATE) TRACE(" RDW_VALIDATE");
 713     if (flags & RDW_NOINTERNALPAINT) TRACE(" RDW_NOINTERNALPAINT");
 714     if (flags & RDW_NOERASE) TRACE(" RDW_NOERASE");
 715     if (flags & RDW_NOCHILDREN) TRACE(" RDW_NOCHILDREN");
 716     if (flags & RDW_ALLCHILDREN) TRACE(" RDW_ALLCHILDREN");
 717     if (flags & RDW_UPDATENOW) TRACE(" RDW_UPDATENOW");
 718     if (flags & RDW_ERASENOW) TRACE(" RDW_ERASENOW");
 719     if (flags & RDW_FRAME) TRACE(" RDW_FRAME");
 720     if (flags & RDW_NOFRAME) TRACE(" RDW_NOFRAME");
 721
 722 #define RDW_FLAGS \
 723     (RDW_INVALIDATE | \
 724     RDW_INTERNALPAINT | \
 725     RDW_ERASE | \
 726     RDW_VALIDATE | \
 727     RDW_NOINTERNALPAINT | \
 728     RDW_NOERASE | \
 729     RDW_NOCHILDREN | \
 730     RDW_ALLCHILDREN | \
 731     RDW_UPDATENOW | \
 732     RDW_ERASENOW | \
 733     RDW_FRAME | \
 734     RDW_NOFRAME)
 735
 736     if (flags & ~RDW_FLAGS) TRACE(" %04x", flags & ~RDW_FLAGS);
 737     TRACE("\n");
 738 #undef RDW_FLAGS
 739 }
 740
 741
 742 /***********************************************************************
 743  *              RedrawWindow (USER32.@)
 744  */
 745 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 746                               HRGN hrgnUpdate, UINT flags )
 747 {
 748     HRGN hRgn = 0;
 749     RECT r, r2;
 750     POINT pt;
 751     WND* wndPtr;
 752
 753     if (!hwnd) hwnd = GetDesktopWindow();
 754
 755     /* check if the window or its parents are visible/not minimized */
 756
 757     if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
 758
 759     /* process pending events and messages before painting */
 760     if (flags & RDW_UPDATENOW)
 761         MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
 762
 763     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 764     if (TRACE_ON(win))
 765     {
 766         if( hrgnUpdate )
 767         {
 768             GetRgnBox( hrgnUpdate, &r );
 769             TRACE( "%p (%p) NULL %p box (%ld,%ld-%ld,%ld) flags=%04x\n",
 770                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags );
 771         }
 772         else
 773         {
 774             if( rectUpdate )
 775                 r = *rectUpdate;
 776             else
 777                 SetRectEmpty( &r );
 778             TRACE( "%p (%p) %s %ld,%ld-%ld,%ld %p flags=%04x\n",
 779                    hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 780                    r.top, r.right, r.bottom, hrgnUpdate, flags );
 781         }
 782         dump_rdw_flags(flags);
 783     }
 784
 785     /* prepare an update region in window coordinates */
 786
 787     if (((flags & (RDW_INVALIDATE|RDW_FRAME)) == (RDW_INVALIDATE|RDW_FRAME)) ||
 788         ((flags & (RDW_VALIDATE|RDW_NOFRAME)) == (RDW_VALIDATE|RDW_NOFRAME)))
 789         r = wndPtr->rectWindow;
 790     else
 791         r = wndPtr->rectClient;
 792
 793     pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 794     pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 795     OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 796
 797     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 798     {
 799         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 800          * and put a new region straight into wndPtr->hrgnUpdate
 801          * so that RDW_UpdateRgns() won't have to do any extra work.
 802          */
 803
 804         if( hrgnUpdate )
 805         {
 806             if( wndPtr->hrgnUpdate )
 807             {
 808                 hRgn = CreateRectRgn( 0, 0, 0, 0 );
 809                 CombineRgn( hRgn, hrgnUpdate, 0, RGN_COPY );
 810                 OffsetRgn( hRgn, pt.x, pt.y );
 811             }
 812             else
 813             {
 814                 wndPtr->hrgnUpdate = crop_rgn( 0, hrgnUpdate, &r );
 815                 OffsetRgn( wndPtr->hrgnUpdate, pt.x, pt.y );
 816             }
 817         }
 818         else if( rectUpdate )
 819         {
 820             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 821             OffsetRect( &r2, pt.x, pt.y );
 822             if( wndPtr->hrgnUpdate == 0 )
 823                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 824             else
 825                 hRgn = CreateRectRgnIndirect( &r2 );
 826         }
 827         else /* entire window or client depending on RDW_FRAME */
 828         {
 829             if( flags & RDW_FRAME )
 830             {
 831                 if (wndPtr->hrgnUpdate) hRgn = (HRGN)1;
 832                 else wndPtr->hrgnUpdate = (HRGN)1;
 833             }
 834             else
 835             {
 836                 GETCLIENTRECTW( wndPtr, r2 );
 837                 if( wndPtr->hrgnUpdate == 0 )
 838                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 839                 else
 840                     hRgn = CreateRectRgnIndirect( &r2 );
 841             }
 842         }
 843     }
 844     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 845     {
 846         /* In this we cannot leave with zero hRgn */
 847         if( hrgnUpdate )
 848         {
 849             hRgn = crop_rgn( hRgn, hrgnUpdate,  &r );
 850             OffsetRgn( hRgn, pt.x, pt.y );
 851             GetRgnBox( hRgn, &r2 );
 852             if( IsRectEmpty( &r2 ) ) goto END;
 853         }
 854         else if( rectUpdate )
 855         {
 856             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 857                 OffsetRect( &r2, pt.x, pt.y );
 858             hRgn = CreateRectRgnIndirect( &r2 );
 859         }
 860         else /* entire window or client depending on RDW_NOFRAME */
 861         {
 862             if( flags & RDW_NOFRAME )
 863                 hRgn = (HRGN)1;
 864             else
 865             {
 866                 GETCLIENTRECTW( wndPtr, r2 );
 867                 hRgn = CreateRectRgnIndirect( &r2 );
 868             }
 869         }
 870     }
 871
 872     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 873
 874     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 875
 876     /* Erase/update windows, from now on hRgn is a scratch region */
 877
 878     hRgn = RDW_Paint( wndPtr, (hRgn == (HRGN)1) ? 0 : hRgn, flags, 0 );
 879
 880 END:
 881     if( hRgn > (HRGN)1 && (hRgn != hrgnUpdate) )
 882         DeleteObject(hRgn );
 883     WIN_ReleaseWndPtr(wndPtr);
 884     return TRUE;
 885 }
 886
 887
 888 /***********************************************************************
 889  *              UpdateWindow (USER32.@)
 890  */
 891 BOOL WINAPI UpdateWindow( HWND hwnd )
 892 {
 893     return RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
 894 }
 895
 896
 897 /***********************************************************************
 898  *              InvalidateRgn (USER32.@)
 899  */
 900 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 901 {
 902     return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 903 }
 904
 905
 906 /***********************************************************************
 907  *              InvalidateRect (USER32.@)
 908  */
 909 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
 910 {
 911     return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 912 }
 913
 914
 915 /***********************************************************************
 916  *              ValidateRgn (USER32.@)
 917  */
 918 BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
 919 {
 920     return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
 921 }
 922
 923
 924 /***********************************************************************
 925  *              ValidateRect (USER32.@)
 926  */
 927 BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
 928 {
 929     return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 930 }
 931
 932
 933 /***********************************************************************
 934  *              GetUpdateRect (USER32.@)
 935  */
 936 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
 937 {
 938     BOOL retvalue;
 939     WND * wndPtr = WIN_FindWndPtr( hwnd );
 940     if (!wndPtr) return FALSE;
 941
 942     if (rect)
 943     {
 944         if (wndPtr->hrgnUpdate > (HRGN)1)
 945         {
 946             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
 947             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
 948             {
 949                 retvalue = FALSE;
 950                 goto END;
 951             }
 952             GetRgnBox( hrgn, rect );
 953             DeleteObject( hrgn );
 954             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
 955             {
 956                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
 957                 {
 958                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
 959                 }
 960             }
 961         }
 962         else
 963         if( wndPtr->hrgnUpdate == (HRGN)1 )
 964         {
 965             GetClientRect( hwnd, rect );
 966             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
 967         }
 968         else
 969             SetRectEmpty( rect );
 970     }
 971     retvalue = (wndPtr->hrgnUpdate >= (HRGN)1);
 972 END:
 973     WIN_ReleaseWndPtr(wndPtr);
 974     return retvalue;
 975 }
 976
 977
 978 /***********************************************************************
 979  *              GetUpdateRgn (USER32.@)
 980  */
 981 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 982 {
 983     INT retval;
 984     WND * wndPtr = WIN_FindWndPtr( hwnd );
 985     if (!wndPtr) return ERROR;
 986
 987     if (wndPtr->hrgnUpdate == 0)
 988     {
 989         SetRectRgn( hrgn, 0, 0, 0, 0 );
 990         retval = NULLREGION;
 991         goto END;
 992     }
 993     else
 994     if (wndPtr->hrgnUpdate == (HRGN)1)
 995     {
 996         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
 997                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
 998         retval = SIMPLEREGION;
 999     }
1000     else
1001     {
1002         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
1003         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1004                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
1005     }
1006     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
1007 END:
1008     WIN_ReleaseWndPtr(wndPtr);
1009     return retval;
1010 }
1011
1012
1013 /***********************************************************************
1014  *              ExcludeUpdateRgn (USER32.@)
1015  */
1016 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
1017 {
1018     RECT rect;
1019     WND * wndPtr;
1020
1021     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
1022
1023     if (wndPtr->hrgnUpdate)
1024     {
1025         INT ret;
1026         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
1027                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
1028                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
1029                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
1030         if( wndPtr->hrgnUpdate > (HRGN)1 )
1031         {
1032             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
1033             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1034                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
1035         }
1036
1037         /* do ugly coordinate translations in dce.c */
1038
1039         ret = DCE_ExcludeRgn( hdc, hwnd, hrgn );
1040         DeleteObject( hrgn );
1041         WIN_ReleaseWndPtr(wndPtr);
1042         return ret;
1043     }
1044     WIN_ReleaseWndPtr(wndPtr);
1045     return GetClipBox( hdc, &rect );
1046 }
1047
1048
1049
1050 /***********************************************************************
1051  *              FillRect (USER.81)
1052  * NOTE
1053  *   The Win16 variant doesn't support special color brushes like
1054  *   the Win32 one, despite the fact that Win16, as well as Win32,
1055  *   supports special background brushes for a window class.
1056  */
1057 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1058 {
1059     HBRUSH prevBrush;
1060
1061     /* coordinates are logical so we cannot fast-check 'rect',
1062      * it will be done later in the PatBlt().
1063      */
1064
1065     if (!(prevBrush = SelectObject( HDC_32(hdc), HBRUSH_32(hbrush) ))) return 0;
1066     PatBlt( HDC_32(hdc), rect->left, rect->top,
1067               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1068     SelectObject( HDC_32(hdc), prevBrush );
1069     return 1;
1070 }
1071
1072
1073 /***********************************************************************
1074  *              FillRect (USER32.@)
1075  */
1076 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1077 {
1078     HBRUSH prevBrush;
1079
1080     if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
1081         hbrush = GetSysColorBrush( (INT) hbrush - 1 );
1082     }
1083
1084     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1085     PatBlt( hdc, rect->left, rect->top,
1086               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1087     SelectObject( hdc, prevBrush );
1088     return 1;
1089 }
1090
1091
1092 /***********************************************************************
1093  *              InvertRect (USER.82)
1094  */
1095 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1096 {
1097     PatBlt( HDC_32(hdc), rect->left, rect->top,
1098               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1099 }
1100
1101
1102 /***********************************************************************
1103  *              InvertRect (USER32.@)
1104  */
1105 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1106 {
1107     return PatBlt( hdc, rect->left, rect->top,
1108                      rect->right - rect->left, rect->bottom - rect->top,
1109                      DSTINVERT );
1110 }
1111
1112
1113 /***********************************************************************
1114  *              FrameRect (USER32.@)
1115  */
1116 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1117 {
1118     HBRUSH prevBrush;
1119     RECT r = *rect;
1120
1121     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1122     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1123
1124     PatBlt( hdc, r.left, r.top, 1,
1125               r.bottom - r.top, PATCOPY );
1126     PatBlt( hdc, r.right - 1, r.top, 1,
1127               r.bottom - r.top, PATCOPY );
1128     PatBlt( hdc, r.left, r.top,
1129               r.right - r.left, 1, PATCOPY );
1130     PatBlt( hdc, r.left, r.bottom - 1,
1131               r.right - r.left, 1, PATCOPY );
1132
1133     SelectObject( hdc, prevBrush );
1134     return TRUE;
1135 }
1136
1137
1138 /***********************************************************************
1139  *              FrameRect (USER.83)
1140  */
1141 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1142 {
1143     RECT rect;
1144     CONV_RECT16TO32( rect16, &rect );
1145     return FrameRect( HDC_32(hdc), &rect, HBRUSH_32(hbrush) );
1146 }
1147
1148
1149 /***********************************************************************
1150  *              DrawFocusRect (USER.466)
1151  */
1152 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1153 {
1154     RECT rect32;
1155     CONV_RECT16TO32( rc, &rect32 );
1156     DrawFocusRect( HDC_32(hdc), &rect32 );
1157 }
1158
1159
1160 /***********************************************************************
1161  *              DrawFocusRect (USER32.@)
1162  *
1163  * FIXME: PatBlt(PATINVERT) with background brush.
1164  */
1165 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1166 {
1167     HBRUSH hOldBrush;
1168     HPEN hOldPen, hNewPen;
1169     INT oldDrawMode, oldBkMode;
1170
1171     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1172     hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
1173     hOldPen = SelectObject(hdc, hNewPen);
1174     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1175     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1176
1177     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1178
1179     SetBkMode(hdc, oldBkMode);
1180     SetROP2(hdc, oldDrawMode);
1181     SelectObject(hdc, hOldPen);
1182     DeleteObject(hNewPen);
1183     SelectObject(hdc, hOldBrush);
1184
1185     return TRUE;
1186 }
1187
1188
1189 /**********************************************************************
1190  *              DrawAnimatedRects (USER32.@)
1191  */
1192 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1193                                    const RECT* lprcFrom,
1194                                    const RECT* lprcTo )
1195 {
1196     FIXME_(win)("(%p,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1197     return TRUE;
1198 }
1199
1200
1201 /**********************************************************************
1202  *          PAINTING_DrawStateJam
1203  *
1204  * Jams in the requested type in the dc
1205  */
1206 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1207                                   DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1208                                   LPRECT rc, UINT dtflags, BOOL unicode )
1209 {
1210     HDC memdc;
1211     HBITMAP hbmsave;
1212     BOOL retval;
1213     INT cx = rc->right - rc->left;
1214     INT cy = rc->bottom - rc->top;
1215
1216     switch(opcode)
1217     {
1218     case DST_TEXT:
1219     case DST_PREFIXTEXT:
1220         if(unicode)
1221             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1222         else
1223             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1224
1225     case DST_ICON:
1226         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1227
1228     case DST_BITMAP:
1229         memdc = CreateCompatibleDC(hdc);
1230         if(!memdc) return FALSE;
1231         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1232         if(!hbmsave)
1233         {
1234             DeleteDC(memdc);
1235             return FALSE;
1236         }
1237         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1238         SelectObject(memdc, hbmsave);
1239         DeleteDC(memdc);
1240         return retval;
1241
1242     case DST_COMPLEX:
1243         if(func) {
1244             BOOL bRet;
1245             /* DRAWSTATEPROC assumes that it draws at the center of coordinates  */
1246
1247             OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
1248             bRet = func(hdc, lp, wp, cx, cy);
1249             /* Restore origin */
1250             OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
1251             return bRet;
1252         } else
1253             return FALSE;
1254     }
1255     return FALSE;
1256 }
1257
1258 /**********************************************************************
1259  *      PAINTING_DrawState()
1260  */
1261 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr, DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1262                                INT x, INT y, INT cx, INT cy, UINT flags, BOOL unicode )
1263 {
1264     HBITMAP hbm, hbmsave;
1265     HFONT hfsave;
1266     HBRUSH hbsave, hbrtmp = 0;
1267     HDC memdc;
1268     RECT rc;
1269     UINT dtflags = DT_NOCLIP;
1270     COLORREF fg, bg;
1271     UINT opcode = flags & 0xf;
1272     INT len = wp;
1273     BOOL retval, tmp;
1274
1275     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1276     {
1277         if(unicode)
1278             len = strlenW((LPWSTR)lp);
1279         else
1280             len = strlen((LPSTR)lp);
1281     }
1282
1283     /* Find out what size the image has if not given by caller */
1284     if(!cx || !cy)
1285     {
1286         SIZE s;
1287         CURSORICONINFO *ici;
1288         BITMAP bm;
1289
1290         switch(opcode)
1291         {
1292         case DST_TEXT:
1293         case DST_PREFIXTEXT:
1294             if(unicode)
1295                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1296             else
1297                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1298             if(!retval) return FALSE;
1299             break;
1300
1301         case DST_ICON:
1302             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1303             if(!ici) return FALSE;
1304             s.cx = ici->nWidth;
1305             s.cy = ici->nHeight;
1306             GlobalUnlock16((HGLOBAL16)lp);
1307             break;
1308
1309         case DST_BITMAP:
1310             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1311                 return FALSE;
1312             s.cx = bm.bmWidth;
1313             s.cy = bm.bmHeight;
1314             break;
1315
1316         case DST_COMPLEX: /* cx and cy must be set in this mode */
1317             return FALSE;
1318         }
1319
1320         if(!cx) cx = s.cx;
1321         if(!cy) cy = s.cy;
1322     }
1323
1324     rc.left   = x;
1325     rc.top    = y;
1326     rc.right  = x + cx;
1327     rc.bottom = y + cy;
1328
1329     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1330         dtflags |= DT_RIGHT;
1331     if(opcode == DST_TEXT)
1332         dtflags |= DT_NOPREFIX;
1333
1334     /* For DSS_NORMAL we just jam in the image and return */
1335     if((flags & 0x7ff0) == DSS_NORMAL)
1336     {
1337         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode);
1338     }
1339
1340     /* For all other states we need to convert the image to B/W in a local bitmap */
1341     /* before it is displayed */
1342     fg = SetTextColor(hdc, RGB(0, 0, 0));
1343     bg = SetBkColor(hdc, RGB(255, 255, 255));
1344     hbm = NULL; hbmsave = NULL;
1345     memdc = NULL; hbsave = NULL;
1346     retval = FALSE; /* assume failure */
1347
1348     /* From here on we must use "goto cleanup" when something goes wrong */
1349     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1350     if(!hbm) goto cleanup;
1351     memdc   = CreateCompatibleDC(hdc);
1352     if(!memdc) goto cleanup;
1353     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1354     if(!hbmsave) goto cleanup;
1355     rc.left = rc.top = 0;
1356     rc.right = cx;
1357     rc.bottom = cy;
1358     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1359     SetBkColor(memdc, RGB(255, 255, 255));
1360     SetTextColor(memdc, RGB(0, 0, 0));
1361     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1362
1363     /* DST_COMPLEX may draw text as well,
1364      * so we must be sure that correct font is selected
1365      */
1366     if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
1367     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode);
1368     if(hfsave) SelectObject(memdc, hfsave);
1369     if(!tmp) goto cleanup;
1370
1371     /* This state cause the image to be dithered */
1372     if(flags & DSS_UNION)
1373     {
1374         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1375         if(!hbsave) goto cleanup;
1376         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1377         SelectObject(memdc, hbsave);
1378         if(!tmp) goto cleanup;
1379     }
1380
1381     if (flags & DSS_DISABLED)
1382        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
1383     else if (flags & DSS_DEFAULT)
1384        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1385
1386     /* Draw light or dark shadow */
1387     if (flags & (DSS_DISABLED|DSS_DEFAULT))
1388     {
1389        if(!hbrtmp) goto cleanup;
1390        hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
1391        if(!hbsave) goto cleanup;
1392        if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1393        SelectObject(hdc, hbsave);
1394        DeleteObject(hbrtmp);
1395        hbrtmp = 0;
1396     }
1397
1398     if (flags & DSS_DISABLED)
1399     {
1400        hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1401        if(!hbrtmp) goto cleanup;
1402     }
1403     else if (!hbr)
1404     {
1405        hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
1406     }
1407
1408     hbsave = (HBRUSH)SelectObject(hdc, hbr);
1409
1410     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1411
1412     retval = TRUE; /* We succeeded */
1413
1414 cleanup:
1415     SetTextColor(hdc, fg);
1416     SetBkColor(hdc, bg);
1417
1418     if(hbsave)  SelectObject(hdc, hbsave);
1419     if(hbmsave) SelectObject(memdc, hbmsave);
1420     if(hbrtmp)  DeleteObject(hbrtmp);
1421     if(hbm)     DeleteObject(hbm);
1422     if(memdc)   DeleteDC(memdc);
1423
1424     return retval;
1425 }
1426
1427 /**********************************************************************
1428  *              DrawStateA (USER32.@)
1429  */
1430 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1431                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1432                    INT x, INT y, INT cx, INT cy, UINT flags)
1433 {
1434     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE);
1435 }
1436
1437 /**********************************************************************
1438  *              DrawStateW (USER32.@)
1439  */
1440 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1441                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1442                    INT x, INT y, INT cx, INT cy, UINT flags)
1443 {
1444     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE);
1445 }
1446
1447
1448 /***********************************************************************
1449  *              SelectPalette (Not a Windows API)
1450  */
1451 HPALETTE WINAPI SelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
1452 {
1453     WORD wBkgPalette = 1;
1454
1455     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
1456     {
1457         HWND hwnd = WindowFromDC( hDC );
1458         if (hwnd)
1459         {
1460             HWND hForeground = GetForegroundWindow();
1461             /* set primary palette if it's related to current active */
1462             if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
1463         }
1464     }
1465     return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
1466 }
1467
1468
1469 /***********************************************************************
1470  *              UserRealizePalette (USER32.@)
1471  */
1472 UINT WINAPI UserRealizePalette( HDC hDC )
1473 {
1474     UINT realized = pfnGDIRealizePalette( hDC );
1475
1476     /* do not send anything if no colors were changed */
1477     if (realized && IsDCCurrentPalette16( HDC_16(hDC) ))
1478     {
1479         /* send palette change notification */
1480         HWND hWnd = WindowFromDC( hDC );
1481         if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0,
1482                                        SMTO_ABORTIFHUNG, 2000, NULL );
1483     }
1484     return realized;
1485 }