pen.c File Reference

#include <win32k.h>
#include <debug.h>

Include dependency graph for pen.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
static VOID	PEN_vInit (PPEN ppen)
PBRUSH NTAPI	PEN_AllocPenWithHandle (VOID)
PBRUSH NTAPI	PEN_AllocExtPenWithHandle (VOID)
PBRUSH FASTCALL	PEN_ShareLockPen (HPEN hobj)
HPEN APIENTRY	IntGdiExtCreatePen (DWORD dwPenStyle, DWORD dwWidth, IN ULONG ulBrushStyle, IN ULONG ulColor, IN ULONG_PTR ulClientHatch, IN ULONG_PTR ulHatch, DWORD dwStyleCount, PULONG pStyle, IN ULONG cjDIB, IN BOOL bOldStylePen, IN OPTIONAL HBRUSH hbrush)
VOID FASTCALL	IntGdiSetSolidPenColor (HPEN hPen, COLORREF Color)
INT APIENTRY	PEN_GetObject (PBRUSH pbrushPen, INT cbCount, PLOGPEN pBuffer)
HPEN APIENTRY	NtGdiCreatePen (INT PenStyle, INT Width, COLORREF Color, IN HBRUSH hbr)
HPEN APIENTRY	NtGdiExtCreatePen (DWORD dwPenStyle, DWORD ulWidth, IN ULONG ulBrushStyle, IN ULONG ulColor, IN ULONG_PTR ulClientHatch, IN ULONG_PTR ulHatch, DWORD dwStyleCount, PULONG pUnsafeStyle, IN ULONG cjDIB, IN BOOL bOldStylePen, IN OPTIONAL HBRUSH hBrush)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 11 of file pen.c.

Function Documentation

IntGdiExtCreatePen()

HPEN APIENTRY IntGdiExtCreatePen	(	DWORD	dwPenStyle,
		DWORD	dwWidth,
		IN ULONG	ulBrushStyle,
		IN ULONG	ulColor,
		IN ULONG_PTR	ulClientHatch,
		IN ULONG_PTR	ulHatch,
		DWORD	dwStyleCount,
		PULONG	pStyle,
		IN ULONG	cjDIB,
		IN BOOL	bOldStylePen,
		IN OPTIONAL HBRUSH	hbrush
	)

Definition at line 74 of file pen.c.

{
    HPEN hPen;
    PBRUSH pbrushPen;
    static ULONG aulStyleAlternate[] = { 1, 1 };
    static ULONG aulStyleDash[] = { 6, 2 };
    static ULONG aulStyleDot[] = { 1, 1 };
    static ULONG aulStyleDashDot[] = { 3, 2, 1, 2 };
    static ULONG aulStyleDashDotDot[] = { 3, 1, 1, 1, 1, 1 };
    ULONG i;

    dwWidth = abs(dwWidth);

    if ( (dwPenStyle & PS_STYLE_MASK) == PS_NULL)
    {
        return StockObjects[NULL_PEN];
    }

    if (bOldStylePen)
    {
        pbrushPen = PEN_AllocPenWithHandle();
    }
    else
    {
        pbrushPen = PEN_AllocExtPenWithHandle();
    }

    if (!pbrushPen)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        DPRINT("Can't allocate pen\n");
        return 0;
    }
    hPen = pbrushPen->BaseObject.hHmgr;

    // If nWidth is zero, the pen is a single pixel wide, regardless of the current transformation.
    if ((bOldStylePen) && (!dwWidth) && ((dwPenStyle & PS_STYLE_MASK) != PS_SOLID))
        dwWidth = 1;

    pbrushPen->lWidth = dwWidth;
    FLOATOBJ_SetLong(&pbrushPen->eWidth, pbrushPen->lWidth);
    pbrushPen->ulPenStyle = dwPenStyle;
    pbrushPen->BrushAttr.lbColor = ulColor;
    pbrushPen->iBrushStyle = ulBrushStyle;
    // FIXME: Copy the bitmap first ?
    pbrushPen->hbmClient = (HANDLE)ulClientHatch;
    pbrushPen->dwStyleCount = 0;
    pbrushPen->pStyle = NULL;
    pbrushPen->ulStyleSize = 0;

    pbrushPen->flAttrs = bOldStylePen ? BR_IS_OLDSTYLEPEN : BR_IS_PEN;

    // If dwPenStyle is PS_COSMETIC, the width must be set to 1.
    if ( !(bOldStylePen) && ((dwPenStyle & PS_TYPE_MASK) == PS_COSMETIC) && ( dwWidth != 1) )
        goto ExitCleanup;
    // If dwPenStyle is PS_COSMETIC, the brush style must be BS_SOLID.
    if ( !(bOldStylePen) && ((dwPenStyle & PS_TYPE_MASK) == PS_COSMETIC) && (ulBrushStyle != BS_SOLID) )
        goto ExitCleanup;

    switch (dwPenStyle & PS_STYLE_MASK)
    {
    case PS_NULL:
        pbrushPen->flAttrs |= BR_IS_NULL;
        break;

    case PS_SOLID:
        pbrushPen->flAttrs |= BR_IS_SOLID;
        break;

    case PS_ALTERNATE:
        pbrushPen->flAttrs |= BR_IS_SOLID | BR_IS_DEFAULTSTYLE;
        pbrushPen->pStyle = aulStyleAlternate;
        pbrushPen->dwStyleCount = _countof(aulStyleAlternate);
        break;

    case PS_DOT:
        pbrushPen->flAttrs |= BR_IS_SOLID | BR_IS_DEFAULTSTYLE;
        pbrushPen->pStyle = aulStyleDot;
        pbrushPen->dwStyleCount = _countof(aulStyleDot);
        break;

    case PS_DASH:
        pbrushPen->flAttrs |= BR_IS_SOLID | BR_IS_DEFAULTSTYLE;
        pbrushPen->pStyle = aulStyleDash;
        pbrushPen->dwStyleCount = _countof(aulStyleDash);
        break;

    case PS_DASHDOT:
        pbrushPen->flAttrs |= BR_IS_SOLID | BR_IS_DEFAULTSTYLE;
        pbrushPen->pStyle = aulStyleDashDot;
        pbrushPen->dwStyleCount = _countof(aulStyleDashDot);
        break;

    case PS_DASHDOTDOT:
        pbrushPen->flAttrs |= BR_IS_SOLID | BR_IS_DEFAULTSTYLE;
        pbrushPen->pStyle = aulStyleDashDotDot;
        pbrushPen->dwStyleCount = _countof(aulStyleDashDotDot);
        break;

    case PS_INSIDEFRAME:
        pbrushPen->flAttrs |= (BR_IS_SOLID | BR_IS_INSIDEFRAME);
        break;

    case PS_USERSTYLE:
        {
            UINT i;
            BOOL has_neg = FALSE, all_zero = TRUE;

            for(i = 0; (i < dwStyleCount) && !has_neg; i++)
            {
                has_neg = has_neg || (((INT)(pStyle[i])) < 0);
                all_zero = all_zero && (pStyle[i] == 0);
            }

            if(all_zero || has_neg)
            {
                goto ExitCleanup;
            }
        }
        /* FIXME: What style here? */
        pbrushPen->flAttrs |= BR_IS_SOLID;
        pbrushPen->dwStyleCount = dwStyleCount;
        pbrushPen->pStyle = pStyle;
        break;

    default:
        DPRINT1("IntGdiExtCreatePen unknown penstyle %x\n", dwPenStyle);
        goto ExitCleanup;
    }

    if (pbrushPen->pStyle != NULL)
    {
        for (i = 0; i < pbrushPen->dwStyleCount; i++)
        {
            pbrushPen->ulStyleSize += pbrushPen->pStyle[i];
        }
    }

    NT_ASSERT((pbrushPen->dwStyleCount == 0) || (pbrushPen->pStyle != NULL));

    PEN_UnlockPen(pbrushPen);
    return hPen;

ExitCleanup:
    EngSetLastError(ERROR_INVALID_PARAMETER);
    pbrushPen->pStyle = NULL;
    GDIOBJ_vDeleteObject(&pbrushPen->BaseObject);

    return NULL;
}

Referenced by NtGdiCreatePen(), and NtGdiExtCreatePen().

IntGdiSetSolidPenColor()

VOID FASTCALL IntGdiSetSolidPenColor	(	HPEN	hPen,
		COLORREF	Color
	)

Definition at line 238 of file pen.c.

{
    PBRUSH pbrPen;

    pbrPen = PEN_ShareLockPen(hPen);
    if (pbrPen)
    {
        if (pbrPen->flAttrs & BR_IS_SOLID)
        {
            pbrPen->BrushAttr.lbColor = Color & 0xFFFFFF;
        }
        PEN_ShareUnlockPen(pbrPen);
    }
}

NtGdiCreatePen()

HPEN APIENTRY NtGdiCreatePen	(	INT	PenStyle,
		INT	Width,
		COLORREF	Color,
		IN HBRUSH	hbr
	)

Definition at line 322 of file pen.c.

{
    if ((PenStyle < PS_SOLID) ||( PenStyle > PS_INSIDEFRAME))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return NULL;
    }

    return IntGdiExtCreatePen(PenStyle,
                              Width,
                              BS_SOLID,
                              Color,
                              0,
                              0,
                              0,
                              NULL,
                              0,
                              TRUE,
                              hbr);
}

Referenced by CreatePen().

NtGdiExtCreatePen()

HPEN APIENTRY NtGdiExtCreatePen	(	DWORD	dwPenStyle,
		DWORD	ulWidth,
		IN ULONG	ulBrushStyle,
		IN ULONG	ulColor,
		IN ULONG_PTR	ulClientHatch,
		IN ULONG_PTR	ulHatch,
		DWORD	dwStyleCount,
		PULONG	pUnsafeStyle,
		IN ULONG	cjDIB,
		IN BOOL	bOldStylePen,
		IN OPTIONAL HBRUSH	hBrush
	)

Definition at line 349 of file pen.c.

{
    NTSTATUS Status = STATUS_SUCCESS;
    DWORD* pSafeStyle = NULL;
    HPEN hPen;

    if ((int)dwStyleCount < 0) return 0;
    if (dwStyleCount > 16)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return 0;
    }

    if (((dwPenStyle & PS_TYPE_MASK) == PS_COSMETIC) &&
        (ulBrushStyle != BS_SOLID))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return 0;
    }

    if (((dwPenStyle & PS_STYLE_MASK) == PS_NULL) ||
        (ulBrushStyle == BS_NULL))
    {
        return StockObjects[NULL_PEN];
    }


    if ((ulBrushStyle == BS_PATTERN) ||
        (ulBrushStyle == BS_DIBPATTERN) ||
        (ulBrushStyle == BS_DIBPATTERNPT))
    {
        ulColor = 0;
    }
    else if ((ulBrushStyle != BS_SOLID) &&
             (ulBrushStyle != BS_HATCHED))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return 0;
    }

    if ((dwPenStyle & PS_STYLE_MASK) != PS_USERSTYLE)
    {
        dwStyleCount = 0;
        pUnsafeStyle = NULL;
    }

    if (dwStyleCount > 0)
    {
        if (pUnsafeStyle == NULL)
        {
            EngSetLastError(ERROR_INVALID_PARAMETER);
            return 0;
        }

        pSafeStyle = ExAllocatePoolWithTag(NonPagedPool,
                                           dwStyleCount * sizeof(DWORD),
                                           GDITAG_PENSTYLE);
        if (!pSafeStyle)
        {
            SetLastNtError(ERROR_NOT_ENOUGH_MEMORY);
            return 0;
        }
        _SEH2_TRY
        {
            ProbeForRead(pUnsafeStyle, dwStyleCount * sizeof(DWORD), 1);
            RtlCopyMemory(pSafeStyle,
                          pUnsafeStyle,
                          dwStyleCount * sizeof(DWORD));
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END
        if(!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            ExFreePoolWithTag(pSafeStyle, GDITAG_PENSTYLE);
            return 0;
        }
    }

    if (ulBrushStyle == BS_PATTERN)
    {
        _SEH2_TRY
        {
            ProbeForRead((PVOID)ulHatch, cjDIB, 1);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END
        if(!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            if (pSafeStyle) ExFreePoolWithTag(pSafeStyle, GDITAG_PENSTYLE);
            return 0;
        }
    }

    hPen = IntGdiExtCreatePen(dwPenStyle,
                              ulWidth,
                              ulBrushStyle,
                              ulColor,
                              ulClientHatch,
                              ulHatch,
                              dwStyleCount,
                              pSafeStyle,
                              cjDIB,
                              bOldStylePen,
                              hBrush);

    if (!hPen && pSafeStyle)
    {
        ExFreePoolWithTag(pSafeStyle, GDITAG_PENSTYLE);
    }

    return hPen;
}

PEN_AllocExtPenWithHandle()

PBRUSH NTAPI PEN_AllocExtPenWithHandle

(

VOID

)

Definition at line 44 of file pen.c.

{
    PPEN ppen;

    ppen = (PBRUSH)GDIOBJ_AllocObjWithHandle(GDILoObjType_LO_EXTPEN_TYPE, sizeof(PEN));
    if (ppen == NULL)
    {
        return NULL;
    }

    PEN_vInit(ppen);
    return ppen;
}

Referenced by IntGdiExtCreatePen().

PEN_AllocPenWithHandle()

PBRUSH NTAPI PEN_AllocPenWithHandle

(

VOID

)

Definition at line 27 of file pen.c.

{
    PPEN ppen;

    ppen = (PBRUSH)GDIOBJ_AllocObjWithHandle(GDILoObjType_LO_PEN_TYPE, sizeof(PEN));
    if (ppen == NULL)
    {
        return NULL;
    }

    PEN_vInit(ppen);
    return ppen;
}

Referenced by IntCreateStockPen(), and IntGdiExtCreatePen().

PEN_GetObject()

INT APIENTRY PEN_GetObject	(	PBRUSH	pbrushPen,
		INT	cbCount,
		PLOGPEN	pBuffer
	)

Definition at line 255 of file pen.c.

{
    PLOGPEN pLogPen;
    PEXTLOGPEN pExtLogPen;
    INT cbRetCount;

    if (pbrushPen->flAttrs & BR_IS_OLDSTYLEPEN)
    {
        cbRetCount = sizeof(LOGPEN);
        if (pBuffer)
        {
            if (cbCount < cbRetCount) return 0;

            if (((pbrushPen->ulPenStyle & PS_STYLE_MASK) == PS_NULL) &&
                (cbCount == sizeof(EXTLOGPEN)))
            {
                pExtLogPen = (PEXTLOGPEN)pBuffer;
                pExtLogPen->elpPenStyle = pbrushPen->ulPenStyle;
                pExtLogPen->elpWidth = 0;
                pExtLogPen->elpBrushStyle = pbrushPen->iBrushStyle;
                pExtLogPen->elpColor = pbrushPen->BrushAttr.lbColor;
                pExtLogPen->elpHatch = 0;
                pExtLogPen->elpNumEntries = 0;
                cbRetCount = sizeof(EXTLOGPEN);
            }
            else
            {
                pLogPen = (PLOGPEN)pBuffer;
                pLogPen->lopnWidth.x = pbrushPen->lWidth;
                pLogPen->lopnWidth.y = 0;
                pLogPen->lopnStyle = pbrushPen->ulPenStyle;
                pLogPen->lopnColor = pbrushPen->BrushAttr.lbColor;
            }
        }
    }
    else
    {
        DWORD dwStyleCount = (pbrushPen->flAttrs & BR_IS_DEFAULTSTYLE) ?
            0 : pbrushPen->dwStyleCount;
        cbRetCount = sizeof(EXTLOGPEN) - sizeof(DWORD) + dwStyleCount * sizeof(DWORD);
        if (pBuffer)
        {
            ULONG i;

            if (cbCount < cbRetCount) return 0;
            pExtLogPen = (PEXTLOGPEN)pBuffer;
            pExtLogPen->elpPenStyle = pbrushPen->ulPenStyle;
            pExtLogPen->elpWidth = pbrushPen->lWidth;
            pExtLogPen->elpBrushStyle = pbrushPen->iBrushStyle;
            pExtLogPen->elpColor = pbrushPen->BrushAttr.lbColor;
            pExtLogPen->elpHatch = (ULONG_PTR)pbrushPen->hbmClient;
            pExtLogPen->elpNumEntries = dwStyleCount;
            for (i = 0; i < dwStyleCount; i++)
            {
                pExtLogPen->elpStyleEntry[i] = pbrushPen->pStyle[i];
            }
        }
    }

    return cbRetCount;
}

Referenced by GreGetObject().

PEN_ShareLockPen()

PBRUSH FASTCALL PEN_ShareLockPen

(

HPEN

hobj

)

Definition at line 61 of file pen.c.

{
    if ((GDI_HANDLE_GET_TYPE(hobj) != GDILoObjType_LO_PEN_TYPE) &&
        (GDI_HANDLE_GET_TYPE(hobj) != GDILoObjType_LO_EXTPEN_TYPE))
    {
        return NULL;
    }

    return (PBRUSH)GDIOBJ_ReferenceObjectByHandle(hobj, GDIObjType_BRUSH_TYPE);
}

Referenced by DC_vInitDc(), DC_vSetOwner(), DC_vUpdateLineBrush(), IntArc(), IntGdiSetSolidPenColor(), IntRoundRect(), and NtGdiEllipse().

PEN_vInit()

static VOID PEN_vInit ( PPEN  ppen )

static

Definition at line 18 of file pen.c.

{
    /* Start with kmode brush attribute */
    ppen->pBrushAttr = &ppen->BrushAttr;
}

Referenced by PEN_AllocExtPenWithHandle(), and PEN_AllocPenWithHandle().