win32ss/gdi/ntgdi/fillshap.c

   1 /*
   2  * PROJECT:         ReactOS win32 kernel mode subsystem
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            win32ss/gdi/ntgdi/fillshap.c
   5  * PURPOSE:         fillshap
   6  * PROGRAMMER:
   7  */
   8
   9 #include <win32k.h>
  10
  11 #define NDEBUG
  12 #include <debug.h>
  13
  14 #define Rsin(d) ((d) == 0.0 ? 0.0 : ((d) == 90.0 ? 1.0 : sin(d*M_PI/180.0)))
  15 #define Rcos(d) ((d) == 0.0 ? 1.0 : ((d) == 90.0 ? 0.0 : cos(d*M_PI/180.0)))
  16
  17 BOOL FASTCALL
  18 IntGdiPolygon(PDC    dc,
  19               PPOINT Points,
  20               int    Count)
  21 {
  22     SURFACE *psurf;
  23     PBRUSH pbrLine, pbrFill;
  24     BOOL ret = FALSE; // Default to failure
  25     RECTL DestRect;
  26     int CurrentPoint;
  27     PDC_ATTR pdcattr;
  28     POINTL BrushOrigin;
  29 //    int Left;
  30 //    int Top;
  31
  32     ASSERT(dc); // Caller's responsibility to pass a valid dc
  33
  34     if (!Points || Count < 2 )
  35     {
  36         EngSetLastError(ERROR_INVALID_PARAMETER);
  37         return FALSE;
  38     }
  39
  40 /*
  41     // Find start x, y
  42     Left = Points[0].x;
  43     Top  = Points[0].y;
  44     for (CurrentPoint = 1; CurrentPoint < Count; ++CurrentPoint) {
  45       Left = min(Left, Points[CurrentPoint].x);
  46       Top  = min(Top, Points[CurrentPoint].y);
  47     }
  48 */
  49
  50     pdcattr = dc->pdcattr;
  51
  52     /* Convert to screen coordinates */
  53     IntLPtoDP(dc, Points, Count);
  54     for (CurrentPoint = 0; CurrentPoint < Count; CurrentPoint++)
  55     {
  56         Points[CurrentPoint].x += dc->ptlDCOrig.x;
  57         Points[CurrentPoint].y += dc->ptlDCOrig.y;
  58     }
  59     // No need to have path here.
  60     {
  61         DestRect.left   = Points[0].x;
  62         DestRect.right  = Points[0].x;
  63         DestRect.top    = Points[0].y;
  64         DestRect.bottom = Points[0].y;
  65
  66         for (CurrentPoint = 1; CurrentPoint < Count; ++CurrentPoint)
  67         {
  68             DestRect.left     = min(DestRect.left, Points[CurrentPoint].x);
  69             DestRect.right    = max(DestRect.right, Points[CurrentPoint].x);
  70             DestRect.top      = min(DestRect.top, Points[CurrentPoint].y);
  71             DestRect.bottom   = max(DestRect.bottom, Points[CurrentPoint].y);
  72         }
  73
  74         if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
  75             DC_vUpdateFillBrush(dc);
  76
  77         if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
  78             DC_vUpdateLineBrush(dc);
  79
  80         /* Special locking order to avoid lock-ups */
  81         pbrFill = dc->dclevel.pbrFill;
  82         pbrLine = dc->dclevel.pbrLine;
  83         psurf = dc->dclevel.pSurface;
  84         if (psurf == NULL)
  85         {
  86             /* Memory DC without a bitmap selected, nothing to do. */
  87             return TRUE;
  88         }
  89
  90         /* Now fill the polygon with the current fill brush. */
  91         if (!(pbrFill->flAttrs & BR_IS_NULL))
  92         {
  93             BrushOrigin = *((PPOINTL)&pbrFill->ptOrigin);
  94             BrushOrigin.x += dc->ptlDCOrig.x;
  95             BrushOrigin.y += dc->ptlDCOrig.y;
  96             ret = IntFillPolygon (dc,
  97                                   psurf,
  98                                   &dc->eboFill.BrushObject,
  99                                   Points,
 100                                   Count,
 101                                   DestRect,
 102                                   &BrushOrigin);
 103         }
 104
 105         // Draw the Polygon Edges with the current pen ( if not a NULL pen )
 106         if (!(pbrLine->flAttrs & BR_IS_NULL))
 107         {
 108             int i;
 109
 110             for (i = 0; i < Count-1; i++)
 111             {
 112
 113 // DPRINT1("Polygon Making line from (%d,%d) to (%d,%d)\n",
 114 //                                 Points[0].x, Points[0].y,
 115 //                                 Points[1].x, Points[1].y );
 116
 117                 ret = IntEngLineTo(&psurf->SurfObj,
 118                                    (CLIPOBJ *)&dc->co,
 119                                    &dc->eboLine.BrushObject,
 120                                    Points[i].x,          /* From */
 121                                    Points[i].y,
 122                                    Points[i+1].x,        /* To */
 123                                    Points[i+1].y,
 124                                    &DestRect,
 125                                    ROP2_TO_MIX(pdcattr->jROP2)); /* MIX */
 126                 if (!ret) break;
 127             }
 128             /* Close the polygon */
 129             if (ret)
 130             {
 131                 ret = IntEngLineTo(&psurf->SurfObj,
 132                                    (CLIPOBJ *)&dc->co,
 133                                    &dc->eboLine.BrushObject,
 134                                    Points[Count-1].x, /* From */
 135                                    Points[Count-1].y,
 136                                    Points[0].x,       /* To */
 137                                    Points[0].y,
 138                                    &DestRect,
 139                                    ROP2_TO_MIX(pdcattr->jROP2)); /* MIX */
 140             }
 141         }
 142     }
 143
 144     return ret;
 145 }
 146
 147 BOOL FASTCALL
 148 IntGdiPolyPolygon(DC      *dc,
 149                   LPPOINT Points,
 150                   PULONG  PolyCounts,
 151                   int     Count)
 152 {
 153     if (PATH_IsPathOpen(dc->dclevel))
 154         return PATH_PolyPolygon ( dc, Points, (PINT)PolyCounts, Count);
 155
 156     while (--Count >=0)
 157     {
 158         if (!IntGdiPolygon ( dc, Points, *PolyCounts ))
 159             return FALSE;
 160         Points+=*PolyCounts++;
 161     }
 162     return TRUE;
 163 }
 164
 165 BOOL FASTCALL
 166 IntPolygon(HDC hdc, POINT *Point, int Count)
 167 {
 168     BOOL bResult;
 169     PDC pdc;
 170
 171     pdc = DC_LockDc(hdc);
 172     if (pdc == NULL)
 173     {
 174         EngSetLastError(ERROR_INVALID_HANDLE);
 175         return FALSE;
 176     }
 177
 178     bResult = IntGdiPolygon(pdc, Point, Count);
 179
 180     DC_UnlockDc(pdc);
 181     return bResult;
 182 }
 183
 184
 185 /******************************************************************************/
 186
 187 /*
 188  * NtGdiEllipse
 189  *
 190  * Author
 191  *    Filip Navara
 192  *
 193  * Remarks
 194  *    This function uses optimized Bresenham's ellipse algorithm. It draws
 195  *    four lines of the ellipse in one pass.
 196  *
 197  */
 198
 199 BOOL APIENTRY
 200 NtGdiEllipse(
 201     HDC hDC,
 202     int Left,
 203     int Top,
 204     int Right,
 205     int Bottom)
 206 {
 207     PDC dc;
 208     PDC_ATTR pdcattr;
 209     RECTL RectBounds;
 210     PBRUSH pbrush;
 211     BOOL ret = TRUE;
 212     LONG PenWidth, PenOrigWidth;
 213     LONG RadiusX, RadiusY, CenterX, CenterY;
 214     PBRUSH pFillBrushObj;
 215     BRUSH tmpFillBrushObj;
 216
 217     dc = DC_LockDc(hDC);
 218     if (dc == NULL)
 219     {
 220        EngSetLastError(ERROR_INVALID_HANDLE);
 221        return FALSE;
 222     }
 223
 224     if (PATH_IsPathOpen(dc->dclevel))
 225     {
 226         ret = PATH_Ellipse(dc, Left, Top, Right, Bottom);
 227         DC_UnlockDc(dc);
 228         return ret;
 229     }
 230
 231     ////
 232     //// Could this use PATH_CheckCorners ?
 233     ////
 234     if ((Left == Right) || (Top == Bottom))
 235     {
 236        DC_UnlockDc(dc);
 237        return TRUE;
 238     }
 239
 240     if (Right < Left)
 241     {
 242        INT tmp = Right; Right = Left; Left = tmp;
 243     }
 244     if (Bottom < Top)
 245     {
 246        INT tmp = Bottom; Bottom = Top; Top = tmp;
 247     }
 248     ////
 249
 250     pdcattr = dc->pdcattr;
 251
 252     if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
 253         DC_vUpdateFillBrush(dc);
 254
 255     if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
 256         DC_vUpdateLineBrush(dc);
 257
 258     pbrush = PEN_ShareLockPen(pdcattr->hpen);
 259     if (!pbrush)
 260     {
 261         DPRINT1("Ellipse Fail 1\n");
 262         DC_UnlockDc(dc);
 263         EngSetLastError(ERROR_INTERNAL_ERROR);
 264         return FALSE;
 265     }
 266
 267     PenOrigWidth = PenWidth = pbrush->lWidth;
 268     if (pbrush->ulPenStyle == PS_NULL) PenWidth = 0;
 269
 270     if (pbrush->ulPenStyle == PS_INSIDEFRAME)
 271     {
 272        if (2*PenWidth > (Right - Left)) PenWidth = (Right -Left + 1)/2;
 273        if (2*PenWidth > (Bottom - Top)) PenWidth = (Bottom -Top + 1)/2;
 274        Left   += PenWidth / 2;
 275        Right  -= (PenWidth - 1) / 2;
 276        Top    += PenWidth / 2;
 277        Bottom -= (PenWidth - 1) / 2;
 278     }
 279
 280     if (!PenWidth) PenWidth = 1;
 281     pbrush->lWidth = PenWidth;
 282
 283     RectBounds.left   = Left;
 284     RectBounds.right  = Right;
 285     RectBounds.top    = Top;
 286     RectBounds.bottom = Bottom;
 287
 288     IntLPtoDP(dc, (LPPOINT)&RectBounds, 2);
 289
 290     RectBounds.left += dc->ptlDCOrig.x;
 291     RectBounds.right += dc->ptlDCOrig.x;
 292     RectBounds.top += dc->ptlDCOrig.y;
 293     RectBounds.bottom += dc->ptlDCOrig.y;
 294
 295     // Setup for dynamic width and height.
 296     RadiusX = max((RectBounds.right - RectBounds.left) / 2, 2); // Needs room
 297     RadiusY = max((RectBounds.bottom - RectBounds.top) / 2, 2);
 298     CenterX = (RectBounds.right + RectBounds.left) / 2;
 299     CenterY = (RectBounds.bottom + RectBounds.top) / 2;
 300
 301     DPRINT("Ellipse 1: Left: %d, Top: %d, Right: %d, Bottom: %d\n",
 302                RectBounds.left,RectBounds.top,RectBounds.right,RectBounds.bottom);
 303
 304     DPRINT("Ellipse 2: XLeft: %d, YLeft: %d, Width: %d, Height: %d\n",
 305                CenterX - RadiusX, CenterY + RadiusY, RadiusX*2, RadiusY*2);
 306
 307     pFillBrushObj = BRUSH_ShareLockBrush(pdcattr->hbrush);
 308     if (NULL == pFillBrushObj)
 309     {
 310         DPRINT1("FillEllipse Fail\n");
 311         EngSetLastError(ERROR_INTERNAL_ERROR);
 312         ret = FALSE;
 313     }
 314     else
 315     {
 316         RtlCopyMemory(&tmpFillBrushObj, pFillBrushObj, sizeof(tmpFillBrushObj));
 317         //tmpFillBrushObj.ptOrigin.x += RectBounds.left - Left;
 318         //tmpFillBrushObj.ptOrigin.y += RectBounds.top - Top;
 319         tmpFillBrushObj.ptOrigin.x += dc->ptlDCOrig.x;
 320         tmpFillBrushObj.ptOrigin.y += dc->ptlDCOrig.y;
 321
 322         DC_vPrepareDCsForBlit(dc, &RectBounds, NULL, NULL);
 323
 324         ret = IntFillEllipse( dc,
 325                               CenterX - RadiusX,
 326                               CenterY - RadiusY,
 327                               RadiusX*2, // Width
 328                               RadiusY*2, // Height
 329                               &tmpFillBrushObj);
 330         BRUSH_ShareUnlockBrush(pFillBrushObj);
 331
 332         if (ret)
 333         {
 334            ret = IntDrawEllipse( dc,
 335                                  CenterX - RadiusX,
 336                                  CenterY - RadiusY,
 337                                  RadiusX*2, // Width
 338                                  RadiusY*2, // Height
 339                                  pbrush);
 340         }
 341
 342         DC_vFinishBlit(dc, NULL);
 343     }
 344
 345     pbrush->lWidth = PenOrigWidth;
 346     PEN_ShareUnlockPen(pbrush);
 347     DC_UnlockDc(dc);
 348     DPRINT("Ellipse Exit.\n");
 349     return ret;
 350 }
 351
 352 #if 0
 353
 354 // When the fill mode is ALTERNATE, GDI fills the area between odd-numbered and
 355 // even-numbered polygon sides on each scan line. That is, GDI fills the area between the
 356 // first and second side, between the third and fourth side, and so on.
 357
 358 // WINDING Selects winding mode (fills any region with a nonzero winding value).
 359 // When the fill mode is WINDING, GDI fills any region that has a nonzero winding value.
 360 // This value is defined as the number of times a pen used to draw the polygon would go around the region.
 361 // The direction of each edge of the polygon is important.
 362
 363 extern BOOL FillPolygon(PDC dc,
 364                             SURFOBJ *SurfObj,
 365                             PBRUSHOBJ BrushObj,
 366                             MIX RopMode,
 367                             CONST PPOINT Points,
 368                             int Count,
 369                             RECTL BoundRect);
 370
 371 #endif
 372
 373
 374 ULONG_PTR
 375 APIENTRY
 376 NtGdiPolyPolyDraw( IN HDC hDC,
 377                    IN PPOINT UnsafePoints,
 378                    IN PULONG UnsafeCounts,
 379                    IN ULONG Count,
 380                    IN INT iFunc )
 381 {
 382     DC *dc;
 383     PVOID pTemp;
 384     LPPOINT SafePoints;
 385     PULONG SafeCounts;
 386     NTSTATUS Status = STATUS_SUCCESS;
 387     BOOL Ret = TRUE;
 388     ULONG nPoints = 0, nMaxPoints = 0, nInvalid = 0, i;
 389
 390     if (!UnsafePoints || !UnsafeCounts ||
 391         Count == 0 || iFunc == 0 || iFunc > GdiPolyPolyRgn)
 392     {
 393         /* Windows doesn't set last error */
 394         return FALSE;
 395     }
 396
 397     _SEH2_TRY
 398     {
 399         ProbeForRead(UnsafePoints, Count * sizeof(POINT), 1);
 400         ProbeForRead(UnsafeCounts, Count * sizeof(ULONG), 1);
 401
 402         /* Count points and validate poligons */
 403         for (i = 0; i < Count; i++)
 404         {
 405             if (UnsafeCounts[i] < 2)
 406             {
 407                 nInvalid++;
 408             }
 409             nPoints += UnsafeCounts[i];
 410             nMaxPoints = max(nMaxPoints, UnsafeCounts[i]);
 411         }
 412     }
 413     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
 414     {
 415         Status = _SEH2_GetExceptionCode();
 416     }
 417     _SEH2_END;
 418
 419     if (!NT_SUCCESS(Status))
 420     {
 421         /* Windows doesn't set last error */
 422         return FALSE;
 423     }
 424
 425     if (nPoints == 0 || nPoints < nMaxPoints)
 426     {
 427         /* If all polygon counts are zero, or we have overflow,
 428            return without setting a last error code. */
 429         return FALSE;
 430     }
 431
 432     if (nInvalid != 0)
 433     {
 434         /* If at least one poly count is 0 or 1, fail */
 435         EngSetLastError(ERROR_INVALID_PARAMETER);
 436         return FALSE;
 437     }
 438
 439     /* Allocate one buffer for both counts and points */
 440     pTemp = ExAllocatePoolWithTag(PagedPool,
 441                                   Count * sizeof(ULONG) + nPoints * sizeof(POINT),
 442                                   TAG_SHAPE);
 443     if (!pTemp)
 444     {
 445         EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
 446         return FALSE;
 447     }
 448
 449     SafeCounts = pTemp;
 450     SafePoints = (PVOID)(SafeCounts + Count);
 451
 452     _SEH2_TRY
 453     {
 454         /* Pointers already probed! */
 455         RtlCopyMemory(SafeCounts, UnsafeCounts, Count * sizeof(ULONG));
 456         RtlCopyMemory(SafePoints, UnsafePoints, nPoints * sizeof(POINT));
 457     }
 458     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
 459     {
 460         Status = _SEH2_GetExceptionCode();
 461     }
 462     _SEH2_END;
 463
 464     if (!NT_SUCCESS(Status))
 465     {
 466         ExFreePoolWithTag(pTemp, TAG_SHAPE);
 467         return FALSE;
 468     }
 469
 470     /* Special handling for GdiPolyPolyRgn */
 471     if (iFunc == GdiPolyPolyRgn)
 472     {
 473         INT iMode = (INT)(UINT_PTR)hDC;
 474         HRGN hrgn;
 475
 476         hrgn = GreCreatePolyPolygonRgn(SafePoints, SafeCounts, Count, iMode);
 477
 478         ExFreePoolWithTag(pTemp, TAG_SHAPE);
 479         return (ULONG_PTR)hrgn;
 480     }
 481
 482     dc = DC_LockDc(hDC);
 483     if (!dc)
 484     {
 485         EngSetLastError(ERROR_INVALID_HANDLE);
 486         ExFreePoolWithTag(pTemp, TAG_SHAPE);
 487         return FALSE;
 488     }
 489
 490     DC_vPrepareDCsForBlit(dc, NULL, NULL, NULL);
 491
 492     if (dc->pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
 493         DC_vUpdateFillBrush(dc);
 494
 495     if (dc->pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
 496         DC_vUpdateLineBrush(dc);
 497
 498     /* Perform the actual work */
 499     switch (iFunc)
 500     {
 501         case GdiPolyPolygon:
 502             Ret = IntGdiPolyPolygon(dc, SafePoints, SafeCounts, Count);
 503             break;
 504         case GdiPolyPolyLine:
 505             Ret = IntGdiPolyPolyline(dc, SafePoints, SafeCounts, Count);
 506             break;
 507         case GdiPolyBezier:
 508             Ret = IntGdiPolyBezier(dc, SafePoints, *SafeCounts);
 509             break;
 510         case GdiPolyLineTo:
 511             Ret = IntGdiPolylineTo(dc, SafePoints, *SafeCounts);
 512             break;
 513         case GdiPolyBezierTo:
 514             Ret = IntGdiPolyBezierTo(dc, SafePoints, *SafeCounts);
 515             break;
 516         default:
 517             EngSetLastError(ERROR_INVALID_PARAMETER);
 518             Ret = FALSE;
 519     }
 520
 521     /* Cleanup and return */
 522     DC_vFinishBlit(dc, NULL);
 523     DC_UnlockDc(dc);
 524     ExFreePoolWithTag(pTemp, TAG_SHAPE);
 525
 526     return (ULONG_PTR)Ret;
 527 }
 528
 529
 530 BOOL
 531 FASTCALL
 532 IntRectangle(PDC dc,
 533              int LeftRect,
 534              int TopRect,
 535              int RightRect,
 536              int BottomRect)
 537 {
 538     SURFACE *psurf = NULL;
 539     PBRUSH pbrLine, pbrFill;
 540     BOOL       ret = FALSE; // Default to failure
 541     RECTL      DestRect;
 542     MIX        Mix;
 543     PDC_ATTR pdcattr;
 544     POINTL BrushOrigin;
 545
 546     ASSERT ( dc ); // Caller's responsibility to set this up
 547
 548     pdcattr = dc->pdcattr;
 549
 550     // Rectangle Path only.
 551     if ( PATH_IsPathOpen(dc->dclevel) )
 552     {
 553         return PATH_Rectangle ( dc, LeftRect, TopRect, RightRect, BottomRect );
 554     }
 555
 556         /* Make sure rectangle is not inverted */
 557     DestRect.left   = min(LeftRect, RightRect);
 558     DestRect.right  = max(LeftRect, RightRect);
 559     DestRect.top    = min(TopRect,  BottomRect);
 560     DestRect.bottom = max(TopRect,  BottomRect);
 561
 562     IntLPtoDP(dc, (LPPOINT)&DestRect, 2);
 563
 564     DestRect.left   += dc->ptlDCOrig.x;
 565     DestRect.right  += dc->ptlDCOrig.x;
 566     DestRect.top    += dc->ptlDCOrig.y;
 567     DestRect.bottom += dc->ptlDCOrig.y;
 568
 569     if (dc->fs & (DC_ACCUM_APP|DC_ACCUM_WMGR))
 570     {
 571        IntUpdateBoundsRect(dc, &DestRect);
 572     }
 573
 574     /* In GM_COMPATIBLE, don't include bottom and right edges */
 575     if (pdcattr->iGraphicsMode == GM_COMPATIBLE)
 576     {
 577         DestRect.right--;
 578         DestRect.bottom--;
 579     }
 580
 581     DC_vPrepareDCsForBlit(dc, &DestRect, NULL, NULL);
 582
 583     if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
 584         DC_vUpdateFillBrush(dc);
 585
 586     if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
 587         DC_vUpdateLineBrush(dc);
 588
 589     pbrFill = dc->dclevel.pbrFill;
 590     pbrLine = dc->dclevel.pbrLine;
 591     if (!pbrLine)
 592     {
 593         ret = FALSE;
 594         goto cleanup;
 595     }
 596
 597     psurf = dc->dclevel.pSurface;
 598     if (!psurf)
 599     {
 600         ret = TRUE;
 601         goto cleanup;
 602     }
 603
 604     if (pbrFill)
 605     {
 606         if (!(pbrFill->flAttrs & BR_IS_NULL))
 607         {
 608             BrushOrigin = *((PPOINTL)&pbrFill->ptOrigin);
 609             BrushOrigin.x += dc->ptlDCOrig.x;
 610             BrushOrigin.y += dc->ptlDCOrig.y;
 611             ret = IntEngBitBlt(&psurf->SurfObj,
 612                                NULL,
 613                                NULL,
 614                                (CLIPOBJ *)&dc->co,
 615                                NULL,
 616                                &DestRect,
 617                                NULL,
 618                                NULL,
 619                                &dc->eboFill.BrushObject,
 620                                &BrushOrigin,
 621                                ROP4_FROM_INDEX(R3_OPINDEX_PATCOPY));
 622         }
 623     }
 624
 625     // Draw the rectangle with the current pen
 626
 627     ret = TRUE; // Change default to success
 628
 629     if (!(pbrLine->flAttrs & BR_IS_NULL))
 630     {
 631         Mix = ROP2_TO_MIX(pdcattr->jROP2);
 632         ret = ret && IntEngLineTo(&psurf->SurfObj,
 633                                   (CLIPOBJ *)&dc->co,
 634                                   &dc->eboLine.BrushObject,
 635                                   DestRect.left, DestRect.top, DestRect.right, DestRect.top,
 636                                   &DestRect, // Bounding rectangle
 637                                   Mix);
 638
 639         ret = ret && IntEngLineTo(&psurf->SurfObj,
 640                                   (CLIPOBJ *)&dc->co,
 641                                   &dc->eboLine.BrushObject,
 642                                   DestRect.right, DestRect.top, DestRect.right, DestRect.bottom,
 643                                   &DestRect, // Bounding rectangle
 644                                   Mix);
 645
 646         ret = ret && IntEngLineTo(&psurf->SurfObj,
 647                                   (CLIPOBJ *)&dc->co,
 648                                   &dc->eboLine.BrushObject,
 649                                   DestRect.right, DestRect.bottom, DestRect.left, DestRect.bottom,
 650                                   &DestRect, // Bounding rectangle
 651                                   Mix);
 652
 653         ret = ret && IntEngLineTo(&psurf->SurfObj,
 654                                   (CLIPOBJ *)&dc->co,
 655                                   &dc->eboLine.BrushObject,
 656                                   DestRect.left, DestRect.bottom, DestRect.left, DestRect.top,
 657                                   &DestRect, // Bounding rectangle
 658                                   Mix);
 659     }
 660
 661 cleanup:
 662     DC_vFinishBlit(dc, NULL);
 663
 664     /* Move current position in DC?
 665        MSDN: The current position is neither used nor updated by Rectangle. */
 666
 667     return ret;
 668 }
 669
 670 BOOL
 671 APIENTRY
 672 NtGdiRectangle(HDC  hDC,
 673                int  LeftRect,
 674                int  TopRect,
 675                int  RightRect,
 676                int  BottomRect)
 677 {
 678     DC   *dc;
 679     BOOL ret; // Default to failure
 680
 681     dc = DC_LockDc(hDC);
 682     if (!dc)
 683     {
 684         EngSetLastError(ERROR_INVALID_HANDLE);
 685         return FALSE;
 686     }
 687
 688     /* Do we rotate or shear? */
 689     if (!(dc->pdcattr->mxWorldToDevice.flAccel & XFORM_SCALE))
 690     {
 691         POINTL DestCoords[4];
 692         ULONG PolyCounts = 4;
 693
 694         DestCoords[0].x = DestCoords[3].x = LeftRect;
 695         DestCoords[0].y = DestCoords[1].y = TopRect;
 696         DestCoords[1].x = DestCoords[2].x = RightRect;
 697         DestCoords[2].y = DestCoords[3].y = BottomRect;
 698         // Use IntGdiPolyPolygon so to support PATH.
 699         ret = IntGdiPolyPolygon(dc, DestCoords, &PolyCounts, 1);
 700     }
 701     else
 702     {
 703         ret = IntRectangle(dc, LeftRect, TopRect, RightRect, BottomRect );
 704     }
 705
 706     DC_UnlockDc(dc);
 707
 708     return ret;
 709 }
 710
 711
 712 BOOL
 713 FASTCALL
 714 IntRoundRect(
 715     PDC  dc,
 716     int  Left,
 717     int  Top,
 718     int  Right,
 719     int  Bottom,
 720     int  xCurveDiameter,
 721     int  yCurveDiameter)
 722 {
 723     PDC_ATTR pdcattr;
 724     PBRUSH   pbrLine, pbrFill;
 725     RECTL RectBounds;
 726     LONG PenWidth, PenOrigWidth;
 727     BOOL ret = TRUE; // Default to success
 728     BRUSH brushTemp;
 729
 730     ASSERT ( dc ); // Caller's responsibility to set this up
 731
 732     if ( PATH_IsPathOpen(dc->dclevel) )
 733         return PATH_RoundRect ( dc, Left, Top, Right, Bottom,
 734                                 xCurveDiameter, yCurveDiameter );
 735
 736     if ((Left == Right) || (Top == Bottom)) return TRUE;
 737
 738     xCurveDiameter = max(abs( xCurveDiameter ), 1);
 739     yCurveDiameter = max(abs( yCurveDiameter ), 1);
 740
 741     if (Right < Left)
 742     {
 743        INT tmp = Right; Right = Left; Left = tmp;
 744     }
 745     if (Bottom < Top)
 746     {
 747        INT tmp = Bottom; Bottom = Top; Top = tmp;
 748     }
 749
 750     pdcattr = dc->pdcattr;
 751
 752     if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
 753         DC_vUpdateFillBrush(dc);
 754
 755     if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
 756         DC_vUpdateLineBrush(dc);
 757
 758     pbrLine = PEN_ShareLockPen(pdcattr->hpen);
 759     if (!pbrLine)
 760     {
 761         /* Nothing to do, as we don't have a bitmap */
 762         EngSetLastError(ERROR_INTERNAL_ERROR);
 763         return FALSE;
 764     }
 765
 766     PenOrigWidth = PenWidth = pbrLine->lWidth;
 767     if (pbrLine->ulPenStyle == PS_NULL) PenWidth = 0;
 768
 769     if (pbrLine->ulPenStyle == PS_INSIDEFRAME)
 770     {
 771        if (2*PenWidth > (Right - Left)) PenWidth = (Right -Left + 1)/2;
 772        if (2*PenWidth > (Bottom - Top)) PenWidth = (Bottom -Top + 1)/2;
 773        Left   += PenWidth / 2;
 774        Right  -= (PenWidth - 1) / 2;
 775        Top    += PenWidth / 2;
 776        Bottom -= (PenWidth - 1) / 2;
 777     }
 778
 779     if (!PenWidth) PenWidth = 1;
 780     pbrLine->lWidth = PenWidth;
 781
 782     RectBounds.left = Left;
 783     RectBounds.top = Top;
 784     RectBounds.right = Right;
 785     RectBounds.bottom = Bottom;
 786
 787     IntLPtoDP(dc, (LPPOINT)&RectBounds, 2);
 788
 789     RectBounds.left   += dc->ptlDCOrig.x;
 790     RectBounds.top    += dc->ptlDCOrig.y;
 791     RectBounds.right  += dc->ptlDCOrig.x;
 792     RectBounds.bottom += dc->ptlDCOrig.y;
 793
 794     pbrFill = BRUSH_ShareLockBrush(pdcattr->hbrush);
 795     if (!pbrFill)
 796     {
 797         DPRINT1("FillRound Fail\n");
 798         EngSetLastError(ERROR_INTERNAL_ERROR);
 799         ret = FALSE;
 800     }
 801     else
 802     {
 803
 804         DC_vPrepareDCsForBlit(dc, &RectBounds, NULL, NULL);
 805
 806         RtlCopyMemory(&brushTemp, pbrFill, sizeof(brushTemp));
 807         brushTemp.ptOrigin.x += RectBounds.left - Left;
 808         brushTemp.ptOrigin.y += RectBounds.top - Top;
 809         ret = IntFillRoundRect( dc,
 810                                 RectBounds.left,
 811                                 RectBounds.top,
 812                                 RectBounds.right,
 813                                 RectBounds.bottom,
 814                                 xCurveDiameter,
 815                                 yCurveDiameter,
 816                                 &brushTemp);
 817         BRUSH_ShareUnlockBrush(pbrFill);
 818
 819         if (ret)
 820         {
 821            ret = IntDrawRoundRect( dc,
 822                       RectBounds.left,
 823                        RectBounds.top,
 824                      RectBounds.right,
 825                     RectBounds.bottom,
 826                        xCurveDiameter,
 827                        yCurveDiameter,
 828                        pbrLine);
 829         }
 830
 831         DC_vFinishBlit(dc, NULL);
 832     }
 833
 834
 835     pbrLine->lWidth = PenOrigWidth;
 836     PEN_ShareUnlockPen(pbrLine);
 837     return ret;
 838 }
 839
 840 BOOL
 841 APIENTRY
 842 NtGdiRoundRect(
 843     HDC  hDC,
 844     int  LeftRect,
 845     int  TopRect,
 846     int  RightRect,
 847     int  BottomRect,
 848     int  Width,
 849     int  Height)
 850 {
 851     DC   *dc = DC_LockDc(hDC);
 852     BOOL  ret = FALSE; /* Default to failure */
 853
 854     DPRINT("NtGdiRoundRect(0x%p,%i,%i,%i,%i,%i,%i)\n",hDC,LeftRect,TopRect,RightRect,BottomRect,Width,Height);
 855     if ( !dc )
 856     {
 857         DPRINT1("NtGdiRoundRect() - hDC is invalid\n");
 858         EngSetLastError(ERROR_INVALID_HANDLE);
 859     }
 860     else
 861     {
 862         ret = IntRoundRect ( dc, LeftRect, TopRect, RightRect, BottomRect, Width, Height );
 863         DC_UnlockDc ( dc );
 864     }
 865
 866     return ret;
 867 }
 868
 869 BOOL
 870 NTAPI
 871 GreGradientFill(
 872     HDC hdc,
 873     PTRIVERTEX pVertex,
 874     ULONG nVertex,
 875     PVOID pMesh,
 876     ULONG nMesh,
 877     ULONG ulMode)
 878 {
 879     PDC pdc;
 880     SURFACE *psurf;
 881     EXLATEOBJ exlo;
 882     RECTL rclExtent;
 883     POINTL ptlDitherOrg;
 884     ULONG i;
 885     BOOL bRet;
 886
 887     /* Check parameters */
 888     if (ulMode & GRADIENT_FILL_TRIANGLE)
 889     {
 890         PGRADIENT_TRIANGLE pTriangle = (PGRADIENT_TRIANGLE)pMesh;
 891
 892         for (i = 0; i < nMesh; i++, pTriangle++)
 893         {
 894             if (pTriangle->Vertex1 >= nVertex ||
 895                 pTriangle->Vertex2 >= nVertex ||
 896                 pTriangle->Vertex3 >= nVertex)
 897             {
 898                 EngSetLastError(ERROR_INVALID_PARAMETER);
 899                 return FALSE;
 900             }
 901         }
 902     }
 903     else
 904     {
 905         PGRADIENT_RECT pRect = (PGRADIENT_RECT)pMesh;
 906         for (i = 0; i < nMesh; i++, pRect++)
 907         {
 908             if (pRect->UpperLeft >= nVertex || pRect->LowerRight >= nVertex)
 909             {
 910                 EngSetLastError(ERROR_INVALID_PARAMETER);
 911                 return FALSE;
 912             }
 913         }
 914     }
 915
 916     /* Lock the output DC */
 917     pdc = DC_LockDc(hdc);
 918     if(!pdc)
 919     {
 920         EngSetLastError(ERROR_INVALID_HANDLE);
 921         return FALSE;
 922     }
 923
 924     if (!pdc->dclevel.pSurface)
 925     {
 926         /* Memory DC with no surface selected */
 927         DC_UnlockDc(pdc);
 928         return TRUE; // CHECKME
 929     }
 930
 931     /* Calculate extent */
 932     rclExtent.left = rclExtent.right = pVertex->x;
 933     rclExtent.top = rclExtent.bottom = pVertex->y;
 934     for (i = 0; i < nVertex; i++)
 935     {
 936         rclExtent.left = min(rclExtent.left, (pVertex + i)->x);
 937         rclExtent.right = max(rclExtent.right, (pVertex + i)->x);
 938         rclExtent.top = min(rclExtent.top, (pVertex + i)->y);
 939         rclExtent.bottom = max(rclExtent.bottom, (pVertex + i)->y);
 940     }
 941     IntLPtoDP(pdc, (LPPOINT)&rclExtent, 2);
 942
 943     rclExtent.left   += pdc->ptlDCOrig.x;
 944     rclExtent.right  += pdc->ptlDCOrig.x;
 945     rclExtent.top    += pdc->ptlDCOrig.y;
 946     rclExtent.bottom += pdc->ptlDCOrig.y;
 947
 948     if (RECTL_bIsEmptyRect(&rclExtent))
 949     {
 950         DC_UnlockDc(pdc);
 951         return TRUE;
 952     }
 953
 954     ptlDitherOrg.x = ptlDitherOrg.y = 0;
 955     IntLPtoDP(pdc, (LPPOINT)&ptlDitherOrg, 1);
 956
 957     ptlDitherOrg.x += pdc->ptlDCOrig.x;
 958     ptlDitherOrg.y += pdc->ptlDCOrig.y;
 959
 960    if (pdc->fs & (DC_ACCUM_APP|DC_ACCUM_WMGR))
 961    {
 962       IntUpdateBoundsRect(pdc, &rclExtent);
 963    }
 964
 965     DC_vPrepareDCsForBlit(pdc, &rclExtent, NULL, NULL);
 966
 967     psurf = pdc->dclevel.pSurface;
 968
 969     EXLATEOBJ_vInitialize(&exlo, &gpalRGB, psurf->ppal, 0, 0, 0);
 970
 971     bRet = IntEngGradientFill(&psurf->SurfObj,
 972                              (CLIPOBJ *)&pdc->co,
 973                              &exlo.xlo,
 974                              pVertex,
 975                              nVertex,
 976                              pMesh,
 977                              nMesh,
 978                              &rclExtent,
 979                              &ptlDitherOrg,
 980                              ulMode);
 981
 982     EXLATEOBJ_vCleanup(&exlo);
 983     DC_vFinishBlit(pdc, NULL);
 984     DC_UnlockDc(pdc);
 985
 986     return bRet;
 987 }
 988
 989 BOOL
 990 APIENTRY
 991 NtGdiGradientFill(
 992     HDC hdc,
 993     PTRIVERTEX pVertex,
 994     ULONG nVertex,
 995     PVOID pMesh,
 996     ULONG nMesh,
 997     ULONG ulMode)
 998 {
 999     BOOL bRet;
1000     PTRIVERTEX SafeVertex;
1001     PVOID SafeMesh;
1002     ULONG cbVertex, cbMesh;
1003
1004     /* Validate parameters */
1005     if (!pVertex || !nVertex || !pMesh || !nMesh)
1006     {
1007         EngSetLastError(ERROR_INVALID_PARAMETER);
1008         return FALSE;
1009     }
1010
1011     switch (ulMode)
1012     {
1013         case GRADIENT_FILL_RECT_H:
1014         case GRADIENT_FILL_RECT_V:
1015             cbMesh = nMesh * sizeof(GRADIENT_RECT);
1016             break;
1017         case GRADIENT_FILL_TRIANGLE:
1018             cbMesh = nMesh * sizeof(GRADIENT_TRIANGLE);
1019             break;
1020         default:
1021             EngSetLastError(ERROR_INVALID_PARAMETER);
1022             return FALSE;
1023     }
1024
1025     cbVertex = nVertex * sizeof(TRIVERTEX) ;
1026     if(cbVertex + cbMesh <= cbVertex)
1027     {
1028         /* Overflow */
1029         return FALSE ;
1030     }
1031
1032     /* Allocate a kernel mode buffer */
1033     SafeVertex = ExAllocatePoolWithTag(PagedPool, cbVertex + cbMesh, TAG_SHAPE);
1034     if(!SafeVertex)
1035     {
1036         EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
1037         return FALSE;
1038     }
1039
1040     SafeMesh = (PVOID)((ULONG_PTR)SafeVertex + cbVertex);
1041
1042     /* Copy the parameters to kernel mode */
1043     _SEH2_TRY
1044     {
1045         ProbeForRead(pVertex, cbVertex, 1);
1046         ProbeForRead(pMesh, cbMesh, 1);
1047         RtlCopyMemory(SafeVertex, pVertex, cbVertex);
1048         RtlCopyMemory(SafeMesh, pMesh, cbMesh);
1049     }
1050     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
1051     {
1052         ExFreePoolWithTag(SafeVertex, TAG_SHAPE);
1053         SetLastNtError(_SEH2_GetExceptionCode());
1054         _SEH2_YIELD(return FALSE;)
1055     }
1056     _SEH2_END;
1057
1058     /* Call the internal function */
1059     bRet = GreGradientFill(hdc, SafeVertex, nVertex, SafeMesh, nMesh, ulMode);
1060
1061     /* Cleanup and return result */
1062     ExFreePoolWithTag(SafeVertex, TAG_SHAPE);
1063     return bRet;
1064 }
1065
1066 BOOL APIENTRY
1067 NtGdiExtFloodFill(
1068     HDC  hDC,
1069     INT  XStart,
1070     INT  YStart,
1071     COLORREF  Color,
1072     UINT  FillType)
1073 {
1074     PDC dc;
1075 #if 0
1076     PDC_ATTR   pdcattr;
1077 #endif
1078     SURFACE    *psurf;
1079     EXLATEOBJ  exlo;
1080     BOOL       Ret = FALSE;
1081     RECTL      DestRect;
1082     POINTL     Pt;
1083     ULONG      ConvColor;
1084
1085     dc = DC_LockDc(hDC);
1086     if (!dc)
1087     {
1088         EngSetLastError(ERROR_INVALID_HANDLE);
1089         return FALSE;
1090     }
1091
1092     if (!dc->dclevel.pSurface)
1093     {
1094         Ret = TRUE;
1095         goto cleanup;
1096     }
1097
1098 #if 0
1099     pdcattr = dc->pdcattr;
1100 #endif
1101
1102     Pt.x = XStart;
1103     Pt.y = YStart;
1104     IntLPtoDP(dc, (LPPOINT)&Pt, 1);
1105
1106     DC_vPrepareDCsForBlit(dc, &DestRect, NULL, NULL);
1107
1108     /// FIXME: what about prgnVIS? And what about REAL clipping?
1109     psurf = dc->dclevel.pSurface;
1110     if (dc->prgnRao)
1111     {
1112         Ret = REGION_PtInRegion(dc->prgnRao, Pt.x, Pt.y);
1113         if (Ret)
1114             REGION_GetRgnBox(dc->prgnRao, (LPRECT)&DestRect);
1115         else
1116         {
1117             DC_vFinishBlit(dc, NULL);
1118             goto cleanup;
1119         }
1120     }
1121     else
1122     {
1123         RECTL_vSetRect(&DestRect, 0, 0, psurf->SurfObj.sizlBitmap.cx, psurf->SurfObj.sizlBitmap.cy);
1124     }
1125
1126     if (dc->fs & (DC_ACCUM_APP|DC_ACCUM_WMGR))
1127     {
1128        IntUpdateBoundsRect(dc, &DestRect);
1129     }
1130
1131     EXLATEOBJ_vInitialize(&exlo, &gpalRGB, psurf->ppal, 0, 0xffffff, 0);
1132
1133     /* Only solid fills supported for now
1134      * How to support pattern brushes and non standard surfaces (not offering dib functions):
1135      * Version a (most likely slow): call DrvPatBlt for every pixel
1136      * Version b: create a flood mask and let MaskBlt blit a masked brush */
1137     ConvColor = XLATEOBJ_iXlate(&exlo.xlo, Color);
1138     Ret = DIB_XXBPP_FloodFillSolid(&psurf->SurfObj, &dc->eboFill.BrushObject, &DestRect, &Pt, ConvColor, FillType);
1139
1140     DC_vFinishBlit(dc, NULL);
1141
1142     EXLATEOBJ_vCleanup(&exlo);
1143
1144 cleanup:
1145     DC_UnlockDc(dc);
1146     return Ret;
1147 }
1148
1149 /* EOF */