reactos/subsystems/win32/win32k/objects/dclife.c

   1 /*
   2  * COPYRIGHT:         See COPYING in the top level directory
   3  * PROJECT:           ReactOS kernel
   4  * PURPOSE:           Functions for creation and destruction of DCs
   5  * FILE:              subsystem/win32/win32k/objects/dclife.c
   6  * PROGRAMER:         Timo Kreuzer (timo.kreuzer@rectos.org)
   7  */
   8
   9 #include <win32k.h>
  10 #include <bugcodes.h>
  11
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 /** Internal functions ********************************************************/
  16
  17 HDC FASTCALL
  18 DC_AllocDC(PUNICODE_STRING Driver)
  19 {
  20     PDC  NewDC;
  21     PDC_ATTR pdcattr;
  22     HDC  hDC;
  23     PWSTR Buf = NULL;
  24     XFORM xformTemplate;
  25     PBRUSH pbrush;
  26     HSURF hsurf;
  27
  28     if (Driver != NULL)
  29     {
  30         Buf = ExAllocatePoolWithTag(PagedPool, Driver->MaximumLength, TAG_DC);
  31         if (!Buf)
  32         {
  33             DPRINT1("ExAllocatePoolWithTag failed\n");
  34             return NULL;
  35         }
  36         RtlCopyMemory(Buf, Driver->Buffer, Driver->MaximumLength);
  37     }
  38
  39     NewDC = (PDC)GDIOBJ_AllocObjWithHandle(GDI_OBJECT_TYPE_DC);
  40     if (!NewDC)
  41     {
  42         if (Buf)
  43         {
  44             ExFreePoolWithTag(Buf, TAG_DC);
  45         }
  46         DPRINT1("GDIOBJ_AllocObjWithHandle failed\n");
  47         return NULL;
  48     }
  49
  50     hDC = NewDC->BaseObject.hHmgr;
  51
  52     NewDC->pdcattr = &NewDC->dcattr;
  53     DC_AllocateDcAttr(hDC);
  54
  55     if (Driver != NULL)
  56     {
  57         RtlCopyMemory(&NewDC->rosdc.DriverName, Driver, sizeof(UNICODE_STRING));
  58         NewDC->rosdc.DriverName.Buffer = Buf;
  59     }
  60     pdcattr = NewDC->pdcattr;
  61
  62     // FIXME: no floating point in the kernel!
  63     xformTemplate.eM11 = 1.0f;
  64     xformTemplate.eM12 = 0.0f;
  65     xformTemplate.eM21 = 0.0f;
  66     xformTemplate.eM22 = 1.0f;
  67     xformTemplate.eDx = 0.0f;
  68     xformTemplate.eDy = 0.0f;
  69     XForm2MatrixS(&NewDC->dclevel.mxWorldToDevice, &xformTemplate);
  70     XForm2MatrixS(&NewDC->dclevel.mxDeviceToWorld, &xformTemplate);
  71     XForm2MatrixS(&NewDC->dclevel.mxWorldToPage, &xformTemplate);
  72
  73     // Setup syncing bits for the dcattr data packets.
  74     pdcattr->flXform = DEVICE_TO_PAGE_INVALID;
  75
  76     pdcattr->ulDirty_ = 0;  // Server side
  77
  78     pdcattr->iMapMode = MM_TEXT;
  79     pdcattr->iGraphicsMode = GM_COMPATIBLE;
  80     pdcattr->jFillMode = ALTERNATE;
  81
  82     pdcattr->szlWindowExt.cx = 1; // Float to Int,,, WRONG!
  83     pdcattr->szlWindowExt.cy = 1;
  84     pdcattr->szlViewportExt.cx = 1;
  85     pdcattr->szlViewportExt.cy = 1;
  86
  87     pdcattr->crForegroundClr = 0;
  88     pdcattr->ulForegroundClr = 0;
  89
  90     pdcattr->ulBackgroundClr = 0xffffff;
  91     pdcattr->crBackgroundClr = 0xffffff;
  92
  93     pdcattr->ulPenClr = RGB(0, 0, 0);
  94     pdcattr->crPenClr = RGB(0, 0, 0);
  95
  96     pdcattr->ulBrushClr = RGB(255, 255, 255);   // Do this way too.
  97     pdcattr->crBrushClr = RGB(255, 255, 255);
  98
  99 //// This fixes the default brush and pen settings. See DC_InitDC.
 100
 101     /* Create the default fill brush */
 102     pdcattr->hbrush = NtGdiGetStockObject(WHITE_BRUSH);
 103     NewDC->dclevel.pbrFill = BRUSH_ShareLockBrush(pdcattr->hbrush);
 104     EBRUSHOBJ_vInit(&NewDC->eboFill, NewDC->dclevel.pbrFill, NewDC);
 105
 106     /* Create the default pen / line brush */
 107     pdcattr->hpen = NtGdiGetStockObject(BLACK_PEN);
 108     NewDC->dclevel.pbrLine = PEN_ShareLockPen(pdcattr->hpen);
 109     EBRUSHOBJ_vInit(&NewDC->eboLine, NewDC->dclevel.pbrLine, NewDC);
 110
 111     /* Create the default text brush */
 112     pbrush = BRUSH_ShareLockBrush(NtGdiGetStockObject(BLACK_BRUSH));
 113     EBRUSHOBJ_vInit(&NewDC->eboText, pbrush, NewDC);
 114     pdcattr->ulDirty_ |= DIRTY_TEXT;
 115
 116     /* Create the default background brush */
 117     pbrush = BRUSH_ShareLockBrush(NtGdiGetStockObject(WHITE_BRUSH));
 118     EBRUSHOBJ_vInit(&NewDC->eboBackground, pbrush, NewDC);
 119
 120     pdcattr->hlfntNew = NtGdiGetStockObject(SYSTEM_FONT);
 121     TextIntRealizeFont(pdcattr->hlfntNew,NULL);
 122     NewDC->hlfntCur = pdcattr->hlfntNew;
 123     NewDC->dclevel.plfnt = GDIOBJ_GetKernelObj(pdcattr->hlfntNew);
 124
 125     NewDC->dclevel.hpal = NtGdiGetStockObject(DEFAULT_PALETTE);
 126     NewDC->dclevel.ppal = PALETTE_ShareLockPalette(NewDC->dclevel.hpal);
 127     /* This should never fail */
 128     ASSERT(NewDC->dclevel.ppal);
 129
 130     NewDC->dclevel.laPath.eMiterLimit = 10.0; // FIXME: use FLOATL or FLOATOBJ!
 131
 132     NewDC->dclevel.lSaveDepth = 1;
 133
 134     hsurf = (HBITMAP)PrimarySurface.pSurface; // <- what kind of haxx0ry is that?
 135     NewDC->dclevel.pSurface = SURFACE_ShareLockSurface(hsurf);
 136
 137     return NewDC;
 138 }
 139
 140 BOOL INTERNAL_CALL
 141 DC_Cleanup(PVOID ObjectBody)
 142 {
 143     PDC pDC = (PDC)ObjectBody;
 144
 145     /* Free driver name (HACK) */
 146     if (pDC->rosdc.DriverName.Buffer)
 147         ExFreePoolWithTag(pDC->rosdc.DriverName.Buffer, TAG_DC);
 148
 149     /* Deselect dc objects */
 150     DC_vSelectSurface(pDC, NULL);
 151     DC_vSelectFillBrush(pDC, NULL);
 152     DC_vSelectLineBrush(pDC, NULL);
 153     DC_vSelectPalette(pDC, NULL);
 154
 155     /* Dereference default brushes */
 156     BRUSH_ShareUnlockBrush(pDC->eboText.pbrush);
 157     BRUSH_ShareUnlockBrush(pDC->eboBackground.pbrush);
 158
 159     /* Cleanup the dc brushes */
 160     EBRUSHOBJ_vCleanup(&pDC->eboFill);
 161     EBRUSHOBJ_vCleanup(&pDC->eboLine);
 162     EBRUSHOBJ_vCleanup(&pDC->eboText);
 163     EBRUSHOBJ_vCleanup(&pDC->eboBackground);
 164
 165     return TRUE;
 166 }
 167
 168 BOOL
 169 FASTCALL
 170 DC_SetOwnership(HDC hDC, PEPROCESS Owner)
 171 {
 172     INT Index;
 173     PGDI_TABLE_ENTRY Entry;
 174     PDC pDC;
 175
 176     if (!GDIOBJ_SetOwnership(hDC, Owner)) return FALSE;
 177     pDC = DC_LockDc(hDC);
 178     if (pDC)
 179     {
 180     /*
 181        System Regions:
 182           These regions do not use attribute sections and when allocated, use
 183           gdiobj level functions.
 184     */
 185         if (pDC->rosdc.hClipRgn)
 186         {   // FIXME! HAX!!!
 187             Index = GDI_HANDLE_GET_INDEX(pDC->rosdc.hClipRgn);
 188             Entry = &GdiHandleTable->Entries[Index];
 189             if (Entry->UserData) FreeObjectAttr(Entry->UserData);
 190             Entry->UserData = NULL;
 191             //
 192             if (!GDIOBJ_SetOwnership(pDC->rosdc.hClipRgn, Owner)) return FALSE;
 193         }
 194         if (pDC->rosdc.hVisRgn)
 195         {   // FIXME! HAX!!!
 196             Index = GDI_HANDLE_GET_INDEX(pDC->rosdc.hVisRgn);
 197             Entry = &GdiHandleTable->Entries[Index];
 198             if (Entry->UserData) FreeObjectAttr(Entry->UserData);
 199             Entry->UserData = NULL;
 200             //
 201             if (!GDIOBJ_SetOwnership(pDC->rosdc.hVisRgn, Owner)) return FALSE;
 202         }
 203         if (pDC->rosdc.hGCClipRgn)
 204         {   // FIXME! HAX!!!
 205             Index = GDI_HANDLE_GET_INDEX(pDC->rosdc.hGCClipRgn);
 206             Entry = &GdiHandleTable->Entries[Index];
 207             if (Entry->UserData) FreeObjectAttr(Entry->UserData);
 208             Entry->UserData = NULL;
 209             //
 210             if (!GDIOBJ_SetOwnership(pDC->rosdc.hGCClipRgn, Owner)) return FALSE;
 211         }
 212         if (pDC->dclevel.hPath)
 213         {
 214             if (!GDIOBJ_SetOwnership(pDC->dclevel.hPath, Owner)) return FALSE;
 215         }
 216         DC_UnlockDc(pDC);
 217     }
 218
 219     return TRUE;
 220 }
 221
 222
 223 HDC FASTCALL
 224 IntGdiCreateDC(
 225     PUNICODE_STRING Driver,
 226     PUNICODE_STRING Device,
 227     PVOID pUMdhpdev,
 228     CONST PDEVMODEW InitData,
 229     BOOL CreateAsIC)
 230 {
 231     HDC      hdc;
 232     PDC      pdc;
 233     PDC_ATTR pdcattr;
 234     HRGN     hVisRgn;
 235     UNICODE_STRING StdDriver;
 236     BOOL calledFromUser;
 237
 238     RtlInitUnicodeString(&StdDriver, L"DISPLAY");
 239
 240     DPRINT("DriverName: %wZ, DeviceName: %wZ\n", Driver, Device);
 241
 242     if (NULL == Driver || 0 == RtlCompareUnicodeString(Driver, &StdDriver, TRUE))
 243     {
 244         if (CreateAsIC)
 245         {
 246             if (! IntPrepareDriverIfNeeded())
 247             {
 248                 /* Here, we have two possibilities:
 249                  * a) return NULL, and hope that the caller
 250                  *    won't call us in a loop
 251                  * b) bugcheck, but caller is unable to
 252                  *    react on the problem
 253                  */
 254                 /*DPRINT1("Unable to prepare graphics driver, returning NULL ic\n");
 255                 return NULL;*/
 256                 KeBugCheck(VIDEO_DRIVER_INIT_FAILURE);
 257             }
 258         }
 259         else
 260         {
 261             calledFromUser = UserIsEntered();
 262             if (!calledFromUser)
 263             {
 264                 UserEnterExclusive();
 265             }
 266
 267             if (! co_IntGraphicsCheck(TRUE))
 268             {
 269                 if (!calledFromUser)
 270                 {
 271                     UserLeave();
 272                 }
 273                 DPRINT1("Unable to initialize graphics, returning NULL dc\n");
 274                 return NULL;
 275             }
 276
 277             if (!calledFromUser)
 278             {
 279                 UserLeave();
 280             }
 281
 282         }
 283     }
 284
 285     /*  Check for existing DC object  */
 286     if ((hdc = DC_FindOpenDC(Driver)) != NULL)
 287     {
 288         hdc = NtGdiCreateCompatibleDC(hdc);
 289         if (!hdc)
 290             DPRINT1("NtGdiCreateCompatibleDC() failed\n");
 291         return hdc;
 292     }
 293
 294     /*  Allocate a DC object  */
 295     pdc = DC_AllocDC(Driver);
 296     if (pdc == NULL)
 297     {
 298         DPRINT1("DC_AllocDC() failed\n");
 299         return NULL;
 300     }
 301     hdc = pdc->BaseObject.hHmgr;
 302     pdcattr = pdc->pdcattr;
 303
 304     pdc->dctype = DC_TYPE_DIRECT;
 305
 306     pdc->dhpdev = PrimarySurface.dhpdev;
 307     if (pUMdhpdev) pUMdhpdev = pdc->dhpdev; // set DHPDEV for device.
 308     pdc->ppdev = (PVOID)&PrimarySurface;
 309
 310     // ATM we only have one display.
 311     pdcattr->ulDirty_ |= DC_PRIMARY_DISPLAY;
 312
 313     pdc->flGraphicsCaps  = PrimarySurface.devinfo.flGraphicsCaps;
 314     pdc->flGraphicsCaps2 = PrimarySurface.devinfo.flGraphicsCaps2;
 315
 316     pdc->dclevel.hpal = NtGdiGetStockObject(DEFAULT_PALETTE);
 317
 318     pdcattr->jROP2 = R2_COPYPEN;
 319
 320     pdc->erclWindow.top = pdc->erclWindow.left = 0;
 321     pdc->erclWindow.right  = pdc->ppdev->gdiinfo.ulHorzRes;
 322     pdc->erclWindow.bottom = pdc->ppdev->gdiinfo.ulVertRes;
 323     pdc->dclevel.flPath &= ~DCPATH_CLOCKWISE; // Default is CCW.
 324
 325     pdcattr->iCS_CP = ftGdiGetTextCharsetInfo(pdc,NULL,0);
 326
 327     hVisRgn = IntSysCreateRectRgn(0, 0, pdc->ppdev->gdiinfo.ulHorzRes,
 328                                  pdc->ppdev->gdiinfo.ulVertRes);
 329
 330     if (!CreateAsIC)
 331     {
 332         pdc->pSurfInfo = NULL;
 333 //    pdc->dclevel.pSurface =
 334         DC_UnlockDc(pdc);
 335
 336         /*  Initialize the DC state  */
 337         IntGdiSetTextColor(hdc, RGB(0, 0, 0));
 338         IntGdiSetBkColor(hdc, RGB(255, 255, 255));
 339     }
 340     else
 341     {
 342         /* From MSDN2:
 343            The CreateIC function creates an information context for the specified device.
 344            The information context provides a fast way to get information about the
 345            device without creating a device context (DC). However, GDI drawing functions
 346            cannot accept a handle to an information context.
 347          */
 348         pdc->dctype = DC_TYPE_INFO;
 349 //    pdc->pSurfInfo =
 350 //        DC_vSelectSurface(pdc, NULL);
 351         pdcattr->crBackgroundClr = pdcattr->ulBackgroundClr = RGB(255, 255, 255);
 352         pdcattr->crForegroundClr = RGB(0, 0, 0);
 353         DC_UnlockDc(pdc);
 354     }
 355     DC_InitDC(hdc);
 356
 357     if (hVisRgn)
 358     {
 359         GdiSelectVisRgn(hdc, hVisRgn);
 360         REGION_FreeRgnByHandle(hVisRgn);
 361     }
 362
 363     IntGdiSetTextAlign(hdc, TA_TOP);
 364     IntGdiSetBkMode(hdc, OPAQUE);
 365
 366     return hdc;
 367 }
 368
 369
 370 HDC APIENTRY
 371 NtGdiOpenDCW(
 372     PUNICODE_STRING Device,
 373     DEVMODEW *InitData,
 374     PUNICODE_STRING pustrLogAddr,
 375     ULONG iType,
 376     BOOL bDisplay,
 377     HANDLE hspool,
 378     VOID *pDriverInfo2,
 379     VOID *pUMdhpdev)
 380 {
 381     UNICODE_STRING SafeDevice;
 382     DEVMODEW SafeInitData;
 383     PVOID Dhpdev;
 384     HDC Ret;
 385     NTSTATUS Status = STATUS_SUCCESS;
 386
 387     if (!Device) return UserGetDesktopDC(iType,FALSE,TRUE);
 388
 389     if (InitData)
 390     {
 391         _SEH2_TRY
 392         {
 393             if (pUMdhpdev)
 394             {
 395                 ProbeForWrite(pUMdhpdev, sizeof(PVOID), 1);
 396             }
 397             ProbeForRead(InitData, sizeof(DEVMODEW), 1);
 398             RtlCopyMemory(&SafeInitData, InitData, sizeof(DEVMODEW));
 399         }
 400         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
 401         {
 402             Status = _SEH2_GetExceptionCode();
 403         }
 404         _SEH2_END;
 405
 406         if (!NT_SUCCESS(Status))
 407         {
 408             SetLastNtError(Status);
 409             return NULL;
 410         }
 411         /* FIXME - InitData can have some more bytes! */
 412     }
 413
 414     if (Device)
 415     {
 416         Status = IntSafeCopyUnicodeString(&SafeDevice, Device);
 417         if (!NT_SUCCESS(Status))
 418         {
 419             SetLastNtError(Status);
 420             return NULL;
 421         }
 422     }
 423
 424     Ret = IntGdiCreateDC(Device ? &SafeDevice : NULL,
 425                          NULL,
 426                          pUMdhpdev ? &Dhpdev : NULL,
 427                          InitData ? &SafeInitData : NULL,
 428                          (BOOL) iType); // FALSE 0 DCW, TRUE 1 ICW
 429
 430     // FIXME!!!!
 431     if (pUMdhpdev) pUMdhpdev = Dhpdev;
 432
 433     return Ret;
 434 }
 435
 436 HDC FASTCALL
 437 IntGdiCreateDisplayDC(HDEV hDev, ULONG DcType, BOOL EmptyDC)
 438 {
 439     HDC hDC;
 440     UNICODE_STRING DriverName;
 441     RtlInitUnicodeString(&DriverName, L"DISPLAY");
 442
 443     if (DcType != DC_TYPE_MEMORY)
 444         hDC = IntGdiCreateDC(&DriverName, NULL, NULL, NULL, (DcType == DC_TYPE_INFO));
 445     else
 446         hDC = NtGdiCreateCompatibleDC(NULL); // OH~ Yuck! I think I taste vomit in my mouth!
 447 //
 448 // There is room to grow here~
 449 //
 450
 451 //
 452 // If NULL, first time through! Build the default (was window) dc!
 453 // Setup clean DC state for the system.
 454 //
 455     if (hDC && !defaultDCstate) // Ultra HAX! Dedicated to GvG!
 456     { // This is a cheesy way to do this.
 457         PDC dc = DC_LockDc(hDC);
 458         HSURF hsurf;
 459         defaultDCstate = ExAllocatePoolWithTag(PagedPool, sizeof(DC), TAG_DC);
 460         if (!defaultDCstate)
 461         {
 462             DC_UnlockDc(dc);
 463             return NULL;
 464         }
 465         RtlZeroMemory(defaultDCstate, sizeof(DC));
 466         defaultDCstate->pdcattr = &defaultDCstate->dcattr;
 467         hsurf = (HSURF)PrimarySurface.pSurface; // HAX²
 468         defaultDCstate->dclevel.pSurface = SURFACE_ShareLockSurface(hsurf);
 469         DC_vCopyState(dc, defaultDCstate, TRUE);
 470         DC_UnlockDc(dc);
 471     }
 472     return hDC;
 473 }
 474
 475 BOOL
 476 FASTCALL
 477 IntGdiDeleteDC(HDC hDC, BOOL Force)
 478 {
 479     PDC DCToDelete = DC_LockDc(hDC);
 480
 481     if (DCToDelete == NULL)
 482     {
 483         SetLastWin32Error(ERROR_INVALID_HANDLE);
 484         return FALSE;
 485     }
 486
 487     if (!Force)
 488     {
 489         if (DCToDelete->fs & DC_FLAG_PERMANENT)
 490         {
 491             DPRINT1("No! You Naughty Application!\n");
 492             DC_UnlockDc(DCToDelete);
 493             return UserReleaseDC(NULL, hDC, FALSE);
 494         }
 495     }
 496
 497     /*  First delete all saved DCs  */
 498     while (DCToDelete->dclevel.lSaveDepth > 1)
 499     {
 500         PDC  savedDC;
 501         HDC  savedHDC;
 502
 503         savedHDC = DCToDelete->hdcNext;
 504         savedDC = DC_LockDc(savedHDC);
 505         if (savedDC == NULL)
 506         {
 507             break;
 508         }
 509         DCToDelete->hdcNext = savedDC->hdcNext;
 510         DCToDelete->dclevel.lSaveDepth--;
 511         DC_UnlockDc(savedDC);
 512         IntGdiDeleteDC(savedHDC, Force);
 513     }
 514
 515     /*  Free GDI resources allocated to this DC  */
 516     if (!(DCToDelete->dclevel.flPath & DCPATH_SAVESTATE))
 517     {
 518         /*
 519         NtGdiSelectPen (DCHandle, STOCK_BLACK_PEN);
 520         NtGdiSelectBrush (DCHandle, STOCK_WHITE_BRUSH);
 521         NtGdiSelectFont (DCHandle, STOCK_SYSTEM_FONT);
 522         DC_LockDC (DCHandle); NtGdiSelectXxx does not recognize stock objects yet  */
 523     }
 524     if (DCToDelete->rosdc.hClipRgn)
 525     {
 526         GreDeleteObject(DCToDelete->rosdc.hClipRgn);
 527     }
 528     if (DCToDelete->rosdc.hVisRgn)
 529     {
 530         GreDeleteObject(DCToDelete->rosdc.hVisRgn);
 531     }
 532     if (NULL != DCToDelete->rosdc.CombinedClip)
 533     {
 534         IntEngDeleteClipRegion(DCToDelete->rosdc.CombinedClip);
 535     }
 536     if (DCToDelete->rosdc.hGCClipRgn)
 537     {
 538         GreDeleteObject(DCToDelete->rosdc.hGCClipRgn);
 539     }
 540     if (DCToDelete->dclevel.prgnMeta)
 541     {
 542        GreDeleteObject(((PROSRGNDATA)DCToDelete->dclevel.prgnMeta)->BaseObject.hHmgr);
 543     }
 544     if (DCToDelete->prgnAPI)
 545     {
 546        GreDeleteObject(((PROSRGNDATA)DCToDelete->prgnAPI)->BaseObject.hHmgr);
 547     }
 548     PATH_Delete(DCToDelete->dclevel.hPath);
 549
 550     DC_UnlockDc(DCToDelete);
 551     GreDeleteObject(hDC);
 552     return TRUE;
 553 }
 554
 555 HDC FASTCALL
 556 DC_FindOpenDC(PUNICODE_STRING  Driver)
 557 {
 558     return NULL;
 559 }
 560
 561 /*!
 562  * Initialize some common fields in the Device Context structure.
 563 */
 564 VOID FASTCALL
 565 DC_InitDC(HDC  DCHandle)
 566 {
 567 //  NtGdiRealizeDefaultPalette(DCHandle);
 568
 569 ////  Removed for now.. See above brush and pen.
 570 //  NtGdiSelectBrush(DCHandle, NtGdiGetStockObject( WHITE_BRUSH ));
 571 //  NtGdiSelectPen(DCHandle, NtGdiGetStockObject( BLACK_PEN ));
 572 ////
 573     //NtGdiSelectFont(DCHandle, hFont);
 574
 575     /*
 576       {
 577         int res;
 578         res = CLIPPING_UpdateGCRegion(DCToInit);
 579         ASSERT ( res != ERROR );
 580       }
 581     */
 582
 583     /* Set virtual resolution */
 584     NtGdiSetVirtualResolution(DCHandle, 0, 0, 0, 0);
 585 }
 586
 587 BOOL
 588 FASTCALL
 589 MakeInfoDC(PDC pdc, BOOL bSet)
 590 {
 591     PSURFACE pSurface;
 592     SIZEL sizl;
 593
 594     /* Can not be a display DC. */
 595     if (pdc->fs & DC_FLAG_DISPLAY) return FALSE;
 596     if (bSet)
 597     {
 598         if (pdc->fs & DC_FLAG_TEMPINFODC || pdc->dctype == DC_TYPE_DIRECT)
 599             return FALSE;
 600
 601         pSurface = pdc->dclevel.pSurface;
 602         pdc->fs |= DC_FLAG_TEMPINFODC;
 603         pdc->pSurfInfo = pSurface;
 604         pdc->dctype = DC_TYPE_INFO;
 605         pdc->dclevel.pSurface = NULL;
 606
 607         PDEV_sizl(pdc->ppdev, &sizl);
 608
 609         if ( sizl.cx == pdc->dclevel.sizl.cx &&
 610              sizl.cy == pdc->dclevel.sizl.cy )
 611             return TRUE;
 612
 613         pdc->dclevel.sizl.cx = sizl.cx;
 614         pdc->dclevel.sizl.cy = sizl.cy;
 615     }
 616     else
 617     {
 618         if (!(pdc->fs & DC_FLAG_TEMPINFODC) || pdc->dctype != DC_TYPE_INFO)
 619             return FALSE;
 620
 621         pSurface = pdc->pSurfInfo;
 622         pdc->fs &= ~DC_FLAG_TEMPINFODC;
 623         pdc->dclevel.pSurface = pSurface;
 624         pdc->dctype = DC_TYPE_DIRECT;
 625         pdc->pSurfInfo = NULL;
 626
 627         if ( !pSurface ||
 628              (pSurface->SurfObj.sizlBitmap.cx == pdc->dclevel.sizl.cx &&
 629               pSurface->SurfObj.sizlBitmap.cy == pdc->dclevel.sizl.cy) )
 630             return TRUE;
 631
 632         pdc->dclevel.sizl.cx = pSurface->SurfObj.sizlBitmap.cx;
 633         pdc->dclevel.sizl.cy = pSurface->SurfObj.sizlBitmap.cy;
 634     }
 635     return IntSetDefaultRegion(pdc);
 636 }
 637
 638 /*
 639 * @implemented
 640 */
 641 BOOL
 642 APIENTRY
 643 NtGdiMakeInfoDC(
 644     IN HDC hdc,
 645     IN BOOL bSet)
 646 {
 647     BOOL Ret;
 648     PDC pdc = DC_LockDc(hdc);
 649     if (pdc)
 650     {
 651         Ret = MakeInfoDC(pdc, bSet);
 652         DC_UnlockDc(pdc);
 653         return Ret;
 654     }
 655     return FALSE;
 656 }
 657
 658 HDC APIENTRY
 659 NtGdiCreateCompatibleDC(HDC hDC)
 660 {
 661     PDC pdcNew, pdcOld;
 662     PDC_ATTR pdcattrNew, pdcattrOld;
 663     HDC hdcNew, DisplayDC = NULL;
 664     HRGN hVisRgn;
 665     UNICODE_STRING DriverName;
 666     DWORD Layout = 0;
 667     HSURF hsurf;
 668
 669     if (hDC == NULL)
 670     {
 671         RtlInitUnicodeString(&DriverName, L"DISPLAY");
 672         DisplayDC = IntGdiCreateDC(&DriverName, NULL, NULL, NULL, TRUE);
 673         if (NULL == DisplayDC)
 674         {
 675             DPRINT1("Failed to create DisplayDC\n");
 676             return NULL;
 677         }
 678         hDC = DisplayDC;
 679     }
 680
 681     /*  Allocate a new DC based on the original DC's device  */
 682     pdcOld = DC_LockDc(hDC);
 683     if (NULL == pdcOld)
 684     {
 685         if (NULL != DisplayDC)
 686         {
 687             NtGdiDeleteObjectApp(DisplayDC);
 688         }
 689         DPRINT1("Failed to lock hDC\n");
 690         return NULL;
 691     }
 692     pdcNew = DC_AllocDC(&pdcOld->rosdc.DriverName);
 693     if (!pdcNew)
 694     {
 695         DPRINT1("Failed to create pdcNew\n");
 696         DC_UnlockDc(pdcOld);
 697         if (DisplayDC)
 698         {
 699             NtGdiDeleteObjectApp(DisplayDC);
 700         }
 701         return  NULL;
 702     }
 703     hdcNew = pdcNew->BaseObject.hHmgr;
 704
 705     pdcattrOld = pdcOld->pdcattr;
 706     pdcattrNew = pdcNew->pdcattr;
 707
 708     /* Copy information from original DC to new DC  */
 709     pdcNew->dclevel.hdcSave = hdcNew;
 710
 711     pdcNew->dhpdev = pdcOld->dhpdev;
 712
 713     /* DriverName is copied in the AllocDC routine  */
 714     pdcattrNew->ptlWindowOrg   = pdcattrOld->ptlWindowOrg;
 715     pdcattrNew->szlWindowExt   = pdcattrOld->szlWindowExt;
 716     pdcattrNew->ptlViewportOrg = pdcattrOld->ptlViewportOrg;
 717     pdcattrNew->szlViewportExt = pdcattrOld->szlViewportExt;
 718
 719     pdcNew->dctype        = DC_TYPE_MEMORY; // Always!
 720     hsurf      = NtGdiGetStockObject(DEFAULT_BITMAP);
 721     pdcNew->dclevel.pSurface = SURFACE_ShareLockSurface(hsurf);
 722     pdcNew->ppdev          = pdcOld->ppdev;
 723     pdcNew->dclevel.hpal    = pdcOld->dclevel.hpal;
 724
 725     pdcattrNew->lTextAlign      = pdcattrOld->lTextAlign;
 726     pdcattrNew->lBkMode         = pdcattrOld->lBkMode;
 727     pdcattrNew->jBkMode         = pdcattrOld->jBkMode;
 728     pdcattrNew->jROP2           = pdcattrOld->jROP2;
 729     pdcattrNew->dwLayout        = pdcattrOld->dwLayout;
 730     if (pdcattrOld->dwLayout & LAYOUT_ORIENTATIONMASK) Layout = pdcattrOld->dwLayout;
 731     pdcNew->dclevel.flPath     = pdcOld->dclevel.flPath;
 732     pdcattrNew->ulDirty_        = pdcattrOld->ulDirty_;
 733     pdcattrNew->iCS_CP          = pdcattrOld->iCS_CP;
 734
 735     pdcNew->erclWindow.left = pdcNew->erclWindow.top = 0;
 736     pdcNew->erclWindow.right = pdcNew->erclWindow.bottom = 1;
 737
 738     DC_UnlockDc(pdcNew);
 739     DC_UnlockDc(pdcOld);
 740     if (NULL != DisplayDC)
 741     {
 742         NtGdiDeleteObjectApp(DisplayDC);
 743     }
 744
 745     hVisRgn = IntSysCreateRectRgn(0, 0, 1, 1);
 746     if (hVisRgn)
 747     {
 748         GdiSelectVisRgn(hdcNew, hVisRgn);
 749         REGION_FreeRgnByHandle(hVisRgn);
 750     }
 751     if (Layout) NtGdiSetLayout(hdcNew, -1, Layout);
 752
 753     DC_InitDC(hdcNew);
 754     return hdcNew;
 755 }
 756
 757
 758 BOOL
 759 APIENTRY
 760 NtGdiDeleteObjectApp(HANDLE DCHandle)
 761 {
 762   GDIOBJTYPE ObjType;
 763
 764   /* Complete all pending operations */
 765   NtGdiFlushUserBatch();
 766
 767   if (GDI_HANDLE_IS_STOCKOBJ(DCHandle)) return TRUE;
 768
 769   if (IsObjectDead((HGDIOBJ)DCHandle)) return TRUE;
 770
 771   ObjType = GDI_HANDLE_GET_TYPE(DCHandle) >> GDI_ENTRY_UPPER_SHIFT;
 772
 773   if (GreGetObjectOwner( DCHandle, ObjType))
 774   {
 775      switch(ObjType)
 776      {
 777         case GDIObjType_DC_TYPE:
 778           return IntGdiDeleteDC(DCHandle, FALSE);
 779
 780         case GDIObjType_RGN_TYPE:
 781         case GDIObjType_SURF_TYPE:
 782         case GDIObjType_PAL_TYPE:
 783         case GDIObjType_LFONT_TYPE:
 784         case GDIObjType_BRUSH_TYPE:
 785           return GreDeleteObject((HGDIOBJ) DCHandle);
 786
 787         default:
 788           return FALSE;
 789      }
 790   }
 791   return (DCHandle != NULL);
 792 }
 793