dc.h

Go to the documentation of this file.

#ifndef __WIN32K_DC_H
#define __WIN32K_DC_H

/* Constants ******************************************************************/

/* flFontState */
enum _FONT_STATE
{
    DC_DIRTYFONT_XFORM = 1,
    DC_DIRTYFONT_LFONT = 2,
    DC_UFI_MAPPING     = 4
};

/* fl */
#define DC_FL_PAL_BACK 1

typedef enum _DCFLAGS
{
    DC_DISPLAY           = 0x0001,
    DC_DIRECT            = 0x0002,
    DC_CANCELED          = 0x0004,
    DC_PERMANANT         = 0x0008,
    DC_DIRTY_RAO         = 0x0010,
    DC_ACCUM_WMGR        = 0x0020,
    DC_ACCUM_APP         = 0x0040,
    DC_RESET             = 0x0080,
    DC_SYNCHRONIZEACCESS = 0x0100,
    DC_EPSPRINTINGESCAPE = 0x0200,
    DC_TEMPINFODC        = 0x0400,
    DC_FULLSCREEN        = 0x0800,
    DC_IN_CLONEPDEV      = 0x1000,
    DC_REDIRECTION       = 0x2000,
    DC_SHAREACCESS       = 0x4000,
#if DBG
    DC_PREPARED          = 0x8000
#endif
} DCFLAGS;

typedef enum _DCTYPE
{
    DCTYPE_DIRECT = 0,  /* Normal device context */
    DCTYPE_MEMORY = 1,  /* Memory device context */
    DCTYPE_INFO   = 2,  /* Information context   */
} DCTYPE;


/* Type definitions ***********************************************************/

typedef struct _DCLEVEL
{
  HPALETTE          hpal;
  struct _PALETTE  * ppal;
  PVOID             pColorSpace; /* COLORSPACE* */
  LONG              lIcmMode;
  LONG              lSaveDepth;
  DWORD             unk1_00000000;
  HGDIOBJ           hdcSave;
  POINTL            ptlBrushOrigin;
  PBRUSH            pbrFill;
  PBRUSH            pbrLine;
  _Notnull_ struct _LFONT   * plfnt; /* LFONT* (TEXTOBJ*) */
  HGDIOBJ           hPath; /* HPATH */
  FLONG             flPath;
  LINEATTRS         laPath; /* 0x20 bytes */
  PREGION           prgnClip;
  PREGION           prgnMeta;
  COLORADJUSTMENT   ca;
  FLONG             flFontState;
  UNIVERSAL_FONT_ID ufi;
  UNIVERSAL_FONT_ID ufiLoc[4]; /* Local List. */
  UNIVERSAL_FONT_ID *pUFI;
  ULONG             uNumUFIs;
  BOOL              ufiSet;
  FLONG             fl;
  FLONG             flBrush;
  MATRIX            mxWorldToDevice;
  MATRIX            mxDeviceToWorld;
  MATRIX            mxWorldToPage;
  FLOATOBJ          efM11PtoD;
  FLOATOBJ          efM22PtoD;
  FLOATOBJ          efDxPtoD;
  FLOATOBJ          efDyPtoD;
  FLOATOBJ          efM11_TWIPS;
  FLOATOBJ          efM22_TWIPS;
  FLOATOBJ          efPr11;
  FLOATOBJ          efPr22;
  PSURFACE          pSurface;
  SIZE              sizl;
} DCLEVEL, *PDCLEVEL;

/* The DC object structure */
typedef struct _DC
{
  /* Header for all gdi objects in the handle table.
     Do not (re)move this. */
  BASEOBJECT  BaseObject;

  DHPDEV      dhpdev;   /* <- PDEVOBJ.hPDev DHPDEV for device. */
  DCTYPE      dctype;
  INT         fs;
  PPDEVOBJ    ppdev;
  PVOID       hsem;   /* PERESOURCE aka HSEMAPHORE */
  FLONG       flGraphicsCaps;
  FLONG       flGraphicsCaps2;
  _Notnull_ PDC_ATTR    pdcattr;
  DCLEVEL     dclevel;
  DC_ATTR     dcattr;
  HDC         hdcNext;
  HDC         hdcPrev;
  RECTL       erclClip;
  POINTL      ptlDCOrig;
  RECTL       erclWindow;
  RECTL       erclBounds;
  RECTL       erclBoundsApp;
  PREGION     prgnAPI;
  _Notnull_ PREGION     prgnVis; /* Visible region (must never be 0) */
  PREGION     prgnRao;
  POINTL      ptlFillOrigin;
  EBRUSHOBJ   eboFill;
  EBRUSHOBJ   eboLine;
  EBRUSHOBJ   eboText;
  EBRUSHOBJ   eboBackground;
  HFONT       hlfntCur;
  FLONG       flSimulationFlags;
  LONG        lEscapement;
  PVOID       prfnt;    /* RFONT* */
  XCLIPOBJ    co;       /* CLIPOBJ */
  PVOID       pPFFList; /* PPFF* */
  PVOID       pClrxFormLnk;
  INT         ipfdDevMax;
  ULONG       ulCopyCount;
  PVOID       pSurfInfo;
  POINTL      ptlDoBanding;
} DC;
// typedef struct _DC *PDC;

extern PDC defaultDCstate;

/* Internal functions *********************************************************/

/* dcobjs.c */

VOID FASTCALL DC_vUpdateFillBrush(PDC pdc);
VOID FASTCALL DC_vUpdateLineBrush(PDC pdc);
VOID FASTCALL DC_vUpdateTextBrush(PDC pdc);
VOID FASTCALL DC_vUpdateBackgroundBrush(PDC pdc);

HFONT
NTAPI
DC_hSelectFont(
    _In_ PDC pdc,
    _In_ HFONT hlfntNew);

HPALETTE
NTAPI
GdiSelectPalette(
    _In_ HDC hDC,
    _In_ HPALETTE hpal,
    _In_ BOOL ForceBackground);

/* dcutil.c */

COLORREF
FASTCALL
IntGdiSetBkColor(
    _In_ HDC hDC,
    _In_ COLORREF Color);

INT FASTCALL IntGdiSetBkMode(HDC  hDC, INT  backgroundMode);
COLORREF FASTCALL  IntGdiSetTextColor(HDC hDC, COLORREF color);
UINT FASTCALL IntGdiSetTextAlign(HDC  hDC, UINT  Mode);
VOID FASTCALL DCU_SetDcUndeletable(HDC);
BOOL FASTCALL IntSetDefaultRegion(PDC);
ULONG TranslateCOLORREF(PDC pdc, COLORREF crColor);
int FASTCALL GreSetStretchBltMode(HDC hdc, int iStretchMode);
int FASTCALL GreGetBkMode(HDC);
int FASTCALL GreGetMapMode(HDC);
COLORREF FASTCALL GreGetTextColor(HDC);
COLORREF FASTCALL GreGetBkColor(HDC);
COLORREF FASTCALL IntSetDCBrushColor(HDC,COLORREF);
COLORREF FASTCALL IntSetDCPenColor(HDC,COLORREF);
int FASTCALL GreGetGraphicsMode(HDC);
BOOL FASTCALL GreSetBrushOrg(HDC,INT,INT,LPPOINT);

CODE_SEG("INIT") NTSTATUS NTAPI InitDcImpl(VOID);
PPDEVOBJ FASTCALL IntEnumHDev(VOID);
PDC NTAPI DC_AllocDcWithHandle(GDILOOBJTYPE eDcObjType);
BOOL NTAPI DC_bAllocDcAttr(PDC pdc);
VOID NTAPI DC_vCleanup(PVOID ObjectBody);
BOOL FASTCALL IntGdiDeleteDC(HDC, BOOL);

BOOL FASTCALL DC_InvertXform(const XFORM *xformSrc, XFORM *xformDest);
VOID FASTCALL DC_vUpdateViewportExt(PDC pdc);
VOID FASTCALL DC_vCopyState(PDC pdcSrc, PDC pdcDst, BOOL To);
VOID FASTCALL DC_vFinishBlit(PDC pdc1, PDC pdc2);
VOID FASTCALL DC_vPrepareDCsForBlit(PDC pdcDest, const RECT* rcDest, PDC pdcSrc, const RECT* rcSrc);

VOID NTAPI DC_vRestoreDC(IN PDC pdc, INT iSaveLevel);

VOID NTAPI DC_vFreeDcAttr(PDC pdc);
VOID NTAPI DC_vInitDc(PDC pdc, DCTYPE dctype, PPDEVOBJ ppdev);

HDC FASTCALL IntGdiCreateDisplayDC(HDEV hDev, ULONG DcType, BOOL EmptyDC);
BOOL FASTCALL IntGdiCleanDC(HDC hDC);
VOID FASTCALL IntvGetDeviceCaps(PPDEVOBJ, PDEVCAPS);
VOID FASTCALL IntUpdateBoundsRect(PDC,PRECTL);

BOOL NTAPI GreSetDCOwner(HDC hdc, ULONG ulOwner);
HDC APIENTRY GreCreateCompatibleDC(HDC hdc, BOOL bAltDc);

VOID
NTAPI
DC_vSetBrushOrigin(PDC pdc, LONG x, LONG y);

FORCEINLINE
PDC
DC_LockDc(HDC hdc)
{
    PDC pdc;

    pdc = (PDC)GDIOBJ_LockObject(hdc, GDIObjType_DC_TYPE);
    if (pdc)
    {
        ASSERT((GDI_HANDLE_GET_TYPE(pdc->BaseObject.hHmgr) == GDILoObjType_LO_DC_TYPE) ||
               (GDI_HANDLE_GET_TYPE(pdc->BaseObject.hHmgr) == GDILoObjType_LO_ALTDC_TYPE));
        ASSERT(pdc->dclevel.plfnt != NULL);
        ASSERT(GDI_HANDLE_GET_TYPE(((POBJ)pdc->dclevel.plfnt)->hHmgr) == GDILoObjType_LO_FONT_TYPE);
    }

    return pdc;
}

FORCEINLINE
VOID
DC_UnlockDc(PDC pdc)
{
    ASSERT(pdc->dclevel.plfnt != NULL);
    ASSERT(GDI_HANDLE_GET_TYPE(((POBJ)pdc->dclevel.plfnt)->hHmgr) == GDILoObjType_LO_FONT_TYPE);

    GDIOBJ_vUnlockObject(&pdc->BaseObject);
}

FORCEINLINE
VOID
DC_vSelectSurface(PDC pdc, PSURFACE psurfNew)
{
    PSURFACE psurfOld = pdc->dclevel.pSurface;
    if (psurfOld)
    {
        psurfOld->hdc = NULL;
        SURFACE_ShareUnlockSurface(psurfOld);
    }
    if (psurfNew)
        GDIOBJ_vReferenceObjectByPointer((POBJ)psurfNew);
    pdc->dclevel.pSurface = psurfNew;
}

FORCEINLINE
VOID
DC_vSelectFillBrush(PDC pdc, PBRUSH pbrFill)
{
    PBRUSH pbrFillOld = pdc->dclevel.pbrFill;
    if (pbrFillOld)
        BRUSH_ShareUnlockBrush(pbrFillOld);
    if (pbrFill)
        GDIOBJ_vReferenceObjectByPointer((POBJ)pbrFill);
    pdc->dclevel.pbrFill = pbrFill;
}

FORCEINLINE
VOID
DC_vSelectLineBrush(PDC pdc, PBRUSH pbrLine)
{
    PBRUSH pbrLineOld = pdc->dclevel.pbrLine;
    if (pbrLineOld)
        BRUSH_ShareUnlockBrush(pbrLineOld);
    if (pbrLine)
        GDIOBJ_vReferenceObjectByPointer((POBJ)pbrLine);
    pdc->dclevel.pbrLine = pbrLine;
}

FORCEINLINE
VOID
DC_vSelectPalette(PDC pdc, PPALETTE ppal)
{
    PPALETTE ppalOld = pdc->dclevel.ppal;
    if (ppalOld)
        PALETTE_ShareUnlockPalette(ppalOld);
    if (ppal)
        GDIOBJ_vReferenceObjectByPointer((POBJ)ppal);
    pdc->dclevel.ppal = ppal;
}

extern _Notnull_ PBRUSH pbrDefaultBrush;
extern _Notnull_ PSURFACE psurfDefaultBitmap;

#define ASSERT_DC_PREPARED(pdc) NT_ASSERT((pdc)->fs & DC_PREPARED)

#endif /* not __WIN32K_DC_H */