fillshap.c File Reference

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

Include dependency graph for fillshap.c:

Go to the source code of this file.

Macros
#define	NDEBUG
#define	Rsin(d)   ((d) == 0.0 ? 0.0 : ((d) == 90.0 ? 1.0 : sin(d*M_PI/180.0)))
#define	Rcos(d)   ((d) == 0.0 ? 1.0 : ((d) == 90.0 ? 0.0 : cos(d*M_PI/180.0)))

Functions
BOOL FASTCALL	IntGdiPolygon (PDC dc, PPOINT Points, int Count)
BOOL FASTCALL	IntGdiPolyPolygon (DC *dc, LPPOINT Points, PULONG PolyCounts, int Count)
BOOL FASTCALL	IntPolygon (HDC hdc, POINT *Point, int Count)
BOOL APIENTRY	NtGdiEllipse (HDC hDC, int Left, int Top, int Right, int Bottom)
ULONG_PTR APIENTRY	NtGdiPolyPolyDraw (IN HDC hDC, IN PPOINT UnsafePoints, IN PULONG UnsafeCounts, IN ULONG Count, IN INT iFunc)
BOOL FASTCALL	IntRectangle (PDC dc, int LeftRect, int TopRect, int RightRect, int BottomRect)
BOOL APIENTRY	NtGdiRectangle (HDC hDC, int LeftRect, int TopRect, int RightRect, int BottomRect)
BOOL FASTCALL	IntRoundRect (PDC dc, int Left, int Top, int Right, int Bottom, int xCurveDiameter, int yCurveDiameter)
BOOL APIENTRY	NtGdiRoundRect (HDC hDC, int LeftRect, int TopRect, int RightRect, int BottomRect, int Width, int Height)
BOOL NTAPI	GreGradientFill (HDC hdc, PTRIVERTEX pVertex, ULONG nVertex, PVOID pMesh, ULONG nMesh, ULONG ulMode)
BOOL APIENTRY	NtGdiGradientFill (HDC hdc, PTRIVERTEX pVertex, ULONG nVertex, PVOID pMesh, ULONG nMesh, ULONG ulMode)
BOOL APIENTRY	NtGdiExtFloodFill (HDC hDC, INT XStart, INT YStart, COLORREF Color, UINT FillType)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 11 of file fillshap.c.

Rcos

#define Rcos

(

d

)

((d) == 0.0 ? 1.0 : ((d) == 90.0 ? 0.0 : cos(d*M_PI/180.0)))

Definition at line 15 of file fillshap.c.

Rsin

#define Rsin

(

d

)

((d) == 0.0 ? 0.0 : ((d) == 90.0 ? 1.0 : sin(d*M_PI/180.0)))

Definition at line 14 of file fillshap.c.

Function Documentation

GreGradientFill()

BOOL NTAPI GreGradientFill	(	HDC	hdc,
		PTRIVERTEX	pVertex,
		ULONG	nVertex,
		PVOID	pMesh,
		ULONG	nMesh,
		ULONG	ulMode
	)

Definition at line 940 of file fillshap.c.

{
    PDC pdc;
    SURFACE *psurf;
    EXLATEOBJ exlo;
    RECTL rclExtent;
    POINTL ptlDitherOrg;
    ULONG i;
    BOOL bRet;
 
    /* Check parameters */
    if (ulMode & GRADIENT_FILL_TRIANGLE)
    {
        PGRADIENT_TRIANGLE pTriangle = (PGRADIENT_TRIANGLE)pMesh;
 
        for (i = 0; i < nMesh; i++, pTriangle++)
        {
            if (pTriangle->Vertex1 >= nVertex ||
                pTriangle->Vertex2 >= nVertex ||
                pTriangle->Vertex3 >= nVertex)
            {
                EngSetLastError(ERROR_INVALID_PARAMETER);
                return FALSE;
            }
        }
    }
    else
    {
        PGRADIENT_RECT pRect = (PGRADIENT_RECT)pMesh;
        for (i = 0; i < nMesh; i++, pRect++)
        {
            if (pRect->UpperLeft >= nVertex || pRect->LowerRight >= nVertex)
            {
                EngSetLastError(ERROR_INVALID_PARAMETER);
                return FALSE;
            }
        }
    }
 
    /* Lock the output DC */
    pdc = DC_LockDc(hdc);
    if(!pdc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    if (!pdc->dclevel.pSurface)
    {
        /* Memory DC with no surface selected */
        DC_UnlockDc(pdc);
        return TRUE; // CHECKME
    }
 
    /* Calculate extent */
    rclExtent.left = rclExtent.right = pVertex->x;
    rclExtent.top = rclExtent.bottom = pVertex->y;
    for (i = 0; i < nVertex; i++)
    {
        rclExtent.left = min(rclExtent.left, (pVertex + i)->x);
        rclExtent.right = max(rclExtent.right, (pVertex + i)->x);
        rclExtent.top = min(rclExtent.top, (pVertex + i)->y);
        rclExtent.bottom = max(rclExtent.bottom, (pVertex + i)->y);
    }
    IntLPtoDP(pdc, (LPPOINT)&rclExtent, 2);
 
    rclExtent.left   += pdc->ptlDCOrig.x;
    rclExtent.right  += pdc->ptlDCOrig.x;
    rclExtent.top    += pdc->ptlDCOrig.y;
    rclExtent.bottom += pdc->ptlDCOrig.y;
 
    if (RECTL_bIsEmptyRect(&rclExtent))
    {
        DC_UnlockDc(pdc);
        return TRUE;
    }
 
    ptlDitherOrg.x = ptlDitherOrg.y = 0;
    IntLPtoDP(pdc, (LPPOINT)&ptlDitherOrg, 1);
 
    ptlDitherOrg.x += pdc->ptlDCOrig.x;
    ptlDitherOrg.y += pdc->ptlDCOrig.y;
 
   if (pdc->fs & (DC_ACCUM_APP|DC_ACCUM_WMGR))
   {
      IntUpdateBoundsRect(pdc, &rclExtent);
   }
 
    DC_vPrepareDCsForBlit(pdc, &rclExtent, NULL, NULL);
 
    psurf = pdc->dclevel.pSurface;
 
    EXLATEOBJ_vInitialize(&exlo, &gpalRGB, psurf->ppal, 0, 0, 0);
 
    bRet = IntEngGradientFill(&psurf->SurfObj,
                             (CLIPOBJ *)&pdc->co,
                             &exlo.xlo,
                             pVertex,
                             nVertex,
                             pMesh,
                             nMesh,
                             &rclExtent,
                             &ptlDitherOrg,
                             ulMode);
 
    EXLATEOBJ_vCleanup(&exlo);
    DC_vFinishBlit(pdc, NULL);
    DC_UnlockDc(pdc);
 
    return bRet;
}

Referenced by NtGdiGradientFill(), and UserDrawCaption().

IntGdiPolygon()

BOOL FASTCALL IntGdiPolygon	(	PDC	dc,
		PPOINT	Points,
		int	Count
	)

Definition at line 18 of file fillshap.c.

{
    SURFACE *psurf;
    PBRUSH pbrLine, pbrFill;
    BOOL ret = FALSE; // Default to failure
    RECTL DestRect;
    INT i, CurrentPoint;
    PDC_ATTR pdcattr;
    POINTL BrushOrigin;
    PPATH pPath;
//    int Left;
//    int Top;
 
    ASSERT(dc); // Caller's responsibility to pass a valid dc
 
    if (!Points || Count < 2 )
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
/*
    // Find start x, y
    Left = Points[0].x;
    Top  = Points[0].y;
    for (CurrentPoint = 1; CurrentPoint < Count; ++CurrentPoint) {
      Left = min(Left, Points[CurrentPoint].x);
      Top  = min(Top, Points[CurrentPoint].y);
    }
*/
 
    pdcattr = dc->pdcattr;
 
    /* Convert to screen coordinates */
    IntLPtoDP(dc, Points, Count);
    for (CurrentPoint = 0; CurrentPoint < Count; CurrentPoint++)
    {
        Points[CurrentPoint].x += dc->ptlDCOrig.x;
        Points[CurrentPoint].y += dc->ptlDCOrig.y;
    }
    // No need to have path here.
    {
        DestRect.left   = Points[0].x;
        DestRect.right  = Points[0].x;
        DestRect.top    = Points[0].y;
        DestRect.bottom = Points[0].y;
 
        for (CurrentPoint = 1; CurrentPoint < Count; ++CurrentPoint)
        {
            DestRect.left     = min(DestRect.left, Points[CurrentPoint].x);
            DestRect.right    = max(DestRect.right, Points[CurrentPoint].x);
            DestRect.top      = min(DestRect.top, Points[CurrentPoint].y);
            DestRect.bottom   = max(DestRect.bottom, Points[CurrentPoint].y);
        }
 
        if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
            DC_vUpdateFillBrush(dc);
 
        if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
            DC_vUpdateLineBrush(dc);
 
        /* Special locking order to avoid lock-ups */
        pbrFill = dc->dclevel.pbrFill;
        pbrLine = dc->dclevel.pbrLine;
        psurf = dc->dclevel.pSurface;
        if (psurf == NULL)
        {
            /* Memory DC without a bitmap selected, nothing to do. */
            return TRUE;
        }
 
        /* Now fill the polygon with the current fill brush. */
        if (!(pbrFill->flAttrs & BR_IS_NULL))
        {
            BrushOrigin = *((PPOINTL)&pbrFill->ptOrigin);
            BrushOrigin.x += dc->ptlDCOrig.x;
            BrushOrigin.y += dc->ptlDCOrig.y;
            ret = IntFillPolygon (dc,
                                  psurf,
                                  &dc->eboFill.BrushObject,
                                  Points,
                                  Count,
                                  DestRect,
                                  &BrushOrigin);
        }
 
        // Draw the Polygon Edges with the current pen ( if not a NULL pen )
        if (!(pbrLine->flAttrs & BR_IS_NULL))
        {
            if (IntIsEffectiveWidePen(pbrLine))
            {
                /* Clear the path */
                PATH_Delete(dc->dclevel.hPath);
                dc->dclevel.hPath = NULL;
 
                /* Begin a path */
                pPath = PATH_CreatePath(Count + 1);
                dc->dclevel.flPath |= DCPATH_ACTIVE;
                dc->dclevel.hPath = pPath->BaseObject.hHmgr;
                pPath->pos = Points[0];
                IntLPtoDP(dc, &pPath->pos, 1);
 
                PATH_MoveTo(dc, pPath);
                for (i = 1; i < Count; ++i)
                {
                    PATH_LineTo(dc, Points[i].x, Points[i].y);
                }
                PATH_LineTo(dc, Points[0].x, Points[0].y);
 
                /* Close the path */
                pPath->state = PATH_Closed;
                dc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
                /* Actually stroke a path */
                ret = PATH_StrokePath(dc, pPath);
 
                /* Clear the path */
                PATH_UnlockPath(pPath);
                PATH_Delete(dc->dclevel.hPath);
                dc->dclevel.hPath = NULL;
            }
            else
            {
                for (i = 0; i < Count-1; i++)
                {
// DPRINT1("Polygon Making line from (%d,%d) to (%d,%d)\n",
//                                 Points[0].x, Points[0].y,
//                                 Points[1].x, Points[1].y );
 
                    ret = IntEngLineTo(&psurf->SurfObj,
                                       (CLIPOBJ *)&dc->co,
                                       &dc->eboLine.BrushObject,
                                       Points[i].x,          /* From */
                                       Points[i].y,
                                       Points[i+1].x,        /* To */
                                       Points[i+1].y,
                                       &DestRect,
                                       ROP2_TO_MIX(pdcattr->jROP2)); /* MIX */
                    if (!ret) break;
                }
                /* Close the polygon */
                if (ret)
                {
                    ret = IntEngLineTo(&psurf->SurfObj,
                                       (CLIPOBJ *)&dc->co,
                                       &dc->eboLine.BrushObject,
                                       Points[Count-1].x, /* From */
                                       Points[Count-1].y,
                                       Points[0].x,       /* To */
                                       Points[0].y,
                                       &DestRect,
                                       ROP2_TO_MIX(pdcattr->jROP2)); /* MIX */
                }
            }
        }
    }
 
    return ret;
}

Referenced by IntGdiPolyPolygon(), and IntPolygon().

IntGdiPolyPolygon()

BOOL FASTCALL IntGdiPolyPolygon	(	DC *	dc,
		LPPOINT	Points,
		PULONG	PolyCounts,
		int	Count
	)

Definition at line 181 of file fillshap.c.

{
    if (PATH_IsPathOpen(dc->dclevel))
        return PATH_PolyPolygon ( dc, Points, (PINT)PolyCounts, Count);
 
    while (--Count >=0)
    {
        if (!IntGdiPolygon ( dc, Points, *PolyCounts ))
            return FALSE;
        Points+=*PolyCounts++;
    }
    return TRUE;
}

Referenced by NtGdiPolyPolyDraw(), and NtGdiRectangle().

IntPolygon()

BOOL FASTCALL IntPolygon	(	HDC	hdc,
		POINT *	Point,
		int	Count
	)

Definition at line 199 of file fillshap.c.

{
    BOOL bResult;
    PDC pdc;
 
    pdc = DC_LockDc(hdc);
    if (pdc == NULL)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    bResult = IntGdiPolygon(pdc, Point, Count);
 
    DC_UnlockDc(pdc);
    return bResult;
}

Referenced by IntDrawDiagEdge().

IntRectangle()

BOOL FASTCALL IntRectangle	(	PDC	dc,
		int	LeftRect,
		int	TopRect,
		int	RightRect,
		int	BottomRect
	)

Definition at line 565 of file fillshap.c.

{
    SURFACE *psurf = NULL;
    PBRUSH pbrLine, pbrFill;
    BOOL       ret = FALSE; // Default to failure
    RECTL      DestRect;
    MIX        Mix;
    PDC_ATTR pdcattr;
    POINTL BrushOrigin;
    PPATH pPath;
 
    ASSERT ( dc ); // Caller's responsibility to set this up
 
    pdcattr = dc->pdcattr;
 
    // Rectangle Path only.
    if ( PATH_IsPathOpen(dc->dclevel) )
    {
        return PATH_Rectangle ( dc, LeftRect, TopRect, RightRect, BottomRect );
    }
 
    /* Make sure rectangle is not inverted */
    DestRect.left   = min(LeftRect, RightRect);
    DestRect.right  = max(LeftRect, RightRect);
    DestRect.top    = min(TopRect,  BottomRect);
    DestRect.bottom = max(TopRect,  BottomRect);
 
    IntLPtoDP(dc, (LPPOINT)&DestRect, 2);
 
    DestRect.left   += dc->ptlDCOrig.x;
    DestRect.right  += dc->ptlDCOrig.x;
    DestRect.top    += dc->ptlDCOrig.y;
    DestRect.bottom += dc->ptlDCOrig.y;
 
    if (dc->fs & (DC_ACCUM_APP|DC_ACCUM_WMGR))
    {
       IntUpdateBoundsRect(dc, &DestRect);
    }
 
    /* In GM_COMPATIBLE, don't include bottom and right edges */
    if (pdcattr->iGraphicsMode == GM_COMPATIBLE)
    {
        DestRect.right--;
        DestRect.bottom--;
    }
 
    DC_vPrepareDCsForBlit(dc, &DestRect, NULL, NULL);
 
    if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
        DC_vUpdateFillBrush(dc);
 
    if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(dc);
 
    pbrFill = dc->dclevel.pbrFill;
    pbrLine = dc->dclevel.pbrLine;
    if (!pbrLine)
    {
        ret = FALSE;
        goto cleanup;
    }
 
    psurf = dc->dclevel.pSurface;
    if (!psurf)
    {
        ret = TRUE;
        goto cleanup;
    }
 
    if (pbrFill)
    {
        if (!(pbrFill->flAttrs & BR_IS_NULL))
        {
            BrushOrigin = *((PPOINTL)&pbrFill->ptOrigin);
            BrushOrigin.x += dc->ptlDCOrig.x;
            BrushOrigin.y += dc->ptlDCOrig.y;
            ret = IntEngBitBlt(&psurf->SurfObj,
                               NULL,
                               NULL,
                               (CLIPOBJ *)&dc->co,
                               NULL,
                               &DestRect,
                               NULL,
                               NULL,
                               &dc->eboFill.BrushObject,
                               &BrushOrigin,
                               ROP4_FROM_INDEX(R3_OPINDEX_PATCOPY));
        }
    }
 
    // Draw the rectangle with the current pen
 
    ret = TRUE; // Change default to success
 
    if (!(pbrLine->flAttrs & BR_IS_NULL))
    {
        if (IntIsEffectiveWidePen(pbrLine))
        {
            /* Clear the path */
            PATH_Delete(dc->dclevel.hPath);
            dc->dclevel.hPath = NULL;
 
            /* Begin a path */
            pPath = PATH_CreatePath(5);
            dc->dclevel.flPath |= DCPATH_ACTIVE;
            dc->dclevel.hPath = pPath->BaseObject.hHmgr;
            pPath->pos.x = LeftRect;
            pPath->pos.y = TopRect;
            IntLPtoDP(dc, &pPath->pos, 1);
 
            PATH_MoveTo(dc, pPath);
            PATH_LineTo(dc, RightRect, TopRect);
            PATH_LineTo(dc, RightRect, BottomRect);
            PATH_LineTo(dc, LeftRect, BottomRect);
            PATH_LineTo(dc, LeftRect, TopRect);
 
            /* Close the path */
            pPath->state = PATH_Closed;
            dc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
            /* Actually stroke a path */
            ret = PATH_StrokePath(dc, pPath);
 
            /* Clear the path */
            PATH_UnlockPath(pPath);
            PATH_Delete(dc->dclevel.hPath);
            dc->dclevel.hPath = NULL;
        }
        else
        {
            Mix = ROP2_TO_MIX(pdcattr->jROP2);
            ret = ret && IntEngLineTo(&psurf->SurfObj,
                                      (CLIPOBJ *)&dc->co,
                                      &dc->eboLine.BrushObject,
                                      DestRect.left, DestRect.top, DestRect.right, DestRect.top,
                                      &DestRect, // Bounding rectangle
                                      Mix);
 
            ret = ret && IntEngLineTo(&psurf->SurfObj,
                                      (CLIPOBJ *)&dc->co,
                                      &dc->eboLine.BrushObject,
                                      DestRect.right, DestRect.top, DestRect.right, DestRect.bottom,
                                      &DestRect, // Bounding rectangle
                                      Mix);
 
            ret = ret && IntEngLineTo(&psurf->SurfObj,
                                      (CLIPOBJ *)&dc->co,
                                      &dc->eboLine.BrushObject,
                                      DestRect.right, DestRect.bottom, DestRect.left, DestRect.bottom,
                                      &DestRect, // Bounding rectangle
                                      Mix);
 
            ret = ret && IntEngLineTo(&psurf->SurfObj,
                                      (CLIPOBJ *)&dc->co,
                                      &dc->eboLine.BrushObject,
                                      DestRect.left, DestRect.bottom, DestRect.left, DestRect.top,
                                      &DestRect, // Bounding rectangle
                                      Mix);
        }
    }
 
cleanup:
    DC_vFinishBlit(dc, NULL);
 
    /* Move current position in DC?
       MSDN: The current position is neither used nor updated by Rectangle. */
 
    return ret;
}

Referenced by NtGdiRectangle().

IntRoundRect()

BOOL FASTCALL IntRoundRect	(	PDC	dc,
		int	Left,
		int	Top,
		int	Right,
		int	Bottom,
		int	xCurveDiameter,
		int	yCurveDiameter
	)

Definition at line 783 of file fillshap.c.

{
    PDC_ATTR pdcattr;
    PBRUSH   pbrLine, pbrFill;
    RECTL RectBounds;
    LONG PenWidth, PenOrigWidth;
    BOOL ret = TRUE; // Default to success
    BRUSH brushTemp;
 
    ASSERT ( dc ); // Caller's responsibility to set this up
 
    if ( PATH_IsPathOpen(dc->dclevel) )
        return PATH_RoundRect ( dc, Left, Top, Right, Bottom,
                                xCurveDiameter, yCurveDiameter );
 
    if ((Left == Right) || (Top == Bottom)) return TRUE;
 
    xCurveDiameter = max(abs( xCurveDiameter ), 1);
    yCurveDiameter = max(abs( yCurveDiameter ), 1);
 
    if (Right < Left)
    {
       INT tmp = Right; Right = Left; Left = tmp;
    }
    if (Bottom < Top)
    {
       INT tmp = Bottom; Bottom = Top; Top = tmp;
    }
 
    pdcattr = dc->pdcattr;
 
    if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
        DC_vUpdateFillBrush(dc);
 
    if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(dc);
 
    pbrLine = PEN_ShareLockPen(pdcattr->hpen);
    if (!pbrLine)
    {
        /* Nothing to do, as we don't have a bitmap */
        EngSetLastError(ERROR_INTERNAL_ERROR);
        return FALSE;
    }
 
    PenOrigWidth = PenWidth = pbrLine->lWidth;
    if (pbrLine->ulPenStyle == PS_NULL) PenWidth = 0;
 
    if (pbrLine->ulPenStyle == PS_INSIDEFRAME)
    {
       if (2*PenWidth > (Right - Left)) PenWidth = (Right -Left + 1)/2;
       if (2*PenWidth > (Bottom - Top)) PenWidth = (Bottom -Top + 1)/2;
       Left   += PenWidth / 2;
       Right  -= (PenWidth - 1) / 2;
       Top    += PenWidth / 2;
       Bottom -= (PenWidth - 1) / 2;
    }
 
    if (!PenWidth) PenWidth = 1;
    pbrLine->lWidth = PenWidth;
 
    RectBounds.left = Left;
    RectBounds.top = Top;
    RectBounds.right = Right;
    RectBounds.bottom = Bottom;
 
    IntLPtoDP(dc, (LPPOINT)&RectBounds, 2);
 
    RectBounds.left   += dc->ptlDCOrig.x;
    RectBounds.top    += dc->ptlDCOrig.y;
    RectBounds.right  += dc->ptlDCOrig.x;
    RectBounds.bottom += dc->ptlDCOrig.y;
 
    pbrFill = BRUSH_ShareLockBrush(pdcattr->hbrush);
    if (!pbrFill)
    {
        DPRINT1("FillRound Fail\n");
        EngSetLastError(ERROR_INTERNAL_ERROR);
        ret = FALSE;
    }
    else
    {
 
        DC_vPrepareDCsForBlit(dc, &RectBounds, NULL, NULL);
 
        RtlCopyMemory(&brushTemp, pbrFill, sizeof(brushTemp));
        brushTemp.ptOrigin.x += RectBounds.left - Left;
        brushTemp.ptOrigin.y += RectBounds.top - Top;
        ret = IntFillRoundRect( dc,
                                RectBounds.left,
                                RectBounds.top,
                                RectBounds.right,
                                RectBounds.bottom,
                                xCurveDiameter,
                                yCurveDiameter,
                                &brushTemp);
        BRUSH_ShareUnlockBrush(pbrFill);
 
        if (ret)
        {
           ret = IntDrawRoundRect( dc,
                      RectBounds.left,
                       RectBounds.top,
                     RectBounds.right,
                    RectBounds.bottom,
                       xCurveDiameter,
                       yCurveDiameter,
                       pbrLine);
        }
 
        DC_vFinishBlit(dc, NULL);
    }
 
 
    pbrLine->lWidth = PenOrigWidth;
    PEN_ShareUnlockPen(pbrLine);
    return ret;
}

Referenced by NtGdiRoundRect().

NtGdiEllipse()

BOOL APIENTRY NtGdiEllipse	(	HDC	hDC,
		int	Left,
		int	Top,
		int	Right,
		int	Bottom
	)

Definition at line 233 of file fillshap.c.

{
    PDC dc;
    PDC_ATTR pdcattr;
    RECTL RectBounds;
    PBRUSH pbrush;
    BOOL ret = TRUE;
    LONG PenWidth, PenOrigWidth;
    LONG RadiusX, RadiusY, CenterX, CenterY;
    PBRUSH pFillBrushObj;
    BRUSH tmpFillBrushObj;
 
    dc = DC_LockDc(hDC);
    if (dc == NULL)
    {
       EngSetLastError(ERROR_INVALID_HANDLE);
       return FALSE;
    }
 
    if (PATH_IsPathOpen(dc->dclevel))
    {
        ret = PATH_Ellipse(dc, Left, Top, Right, Bottom);
        DC_UnlockDc(dc);
        return ret;
    }
 
    if ((Left == Right) || (Top == Bottom))
    {
       DC_UnlockDc(dc);
       return TRUE;
    }
 
    if (Right < Left)
    {
       INT tmp = Right; Right = Left; Left = tmp;
    }
    if (Bottom < Top)
    {
       INT tmp = Bottom; Bottom = Top; Top = tmp;
    }
 
    pdcattr = dc->pdcattr;
 
    if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
        DC_vUpdateFillBrush(dc);
 
    if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(dc);
 
    pbrush = PEN_ShareLockPen(pdcattr->hpen);
    if (!pbrush)
    {
        DPRINT1("Ellipse Fail 1\n");
        DC_UnlockDc(dc);
        EngSetLastError(ERROR_INTERNAL_ERROR);
        return FALSE;
    }
 
    PenOrigWidth = PenWidth = pbrush->lWidth;
    if (pbrush->ulPenStyle == PS_NULL) PenWidth = 0;
 
    if (pbrush->ulPenStyle == PS_INSIDEFRAME)
    {
       if (2*PenWidth > (Right - Left)) PenWidth = (Right -Left + 1)/2;
       if (2*PenWidth > (Bottom - Top)) PenWidth = (Bottom -Top + 1)/2;
       Left   += PenWidth / 2;
       Right  -= (PenWidth - 1) / 2;
       Top    += PenWidth / 2;
       Bottom -= (PenWidth - 1) / 2;
    }
 
    if (!PenWidth) PenWidth = 1;
    pbrush->lWidth = PenWidth;
 
    RectBounds.left   = Left;
    RectBounds.right  = Right;
    RectBounds.top    = Top;
    RectBounds.bottom = Bottom;
 
    IntLPtoDP(dc, (LPPOINT)&RectBounds, 2);
 
    RectBounds.left += dc->ptlDCOrig.x;
    RectBounds.right += dc->ptlDCOrig.x;
    RectBounds.top += dc->ptlDCOrig.y;
    RectBounds.bottom += dc->ptlDCOrig.y;
 
    // Setup for dynamic width and height.
    RadiusX = max((RectBounds.right - RectBounds.left) / 2, 2); // Needs room
    RadiusY = max((RectBounds.bottom - RectBounds.top) / 2, 2);
    CenterX = (RectBounds.right + RectBounds.left) / 2;
    CenterY = (RectBounds.bottom + RectBounds.top) / 2;
 
    DPRINT("Ellipse 1: Left: %d, Top: %d, Right: %d, Bottom: %d\n",
               RectBounds.left,RectBounds.top,RectBounds.right,RectBounds.bottom);
 
    DPRINT("Ellipse 2: XLeft: %d, YLeft: %d, Width: %d, Height: %d\n",
               CenterX - RadiusX, CenterY + RadiusY, RadiusX*2, RadiusY*2);
 
    pFillBrushObj = BRUSH_ShareLockBrush(pdcattr->hbrush);
    if (NULL == pFillBrushObj)
    {
        DPRINT1("FillEllipse Fail\n");
        EngSetLastError(ERROR_INTERNAL_ERROR);
        ret = FALSE;
    }
    else
    {
        RtlCopyMemory(&tmpFillBrushObj, pFillBrushObj, sizeof(tmpFillBrushObj));
        //tmpFillBrushObj.ptOrigin.x += RectBounds.left - Left;
        //tmpFillBrushObj.ptOrigin.y += RectBounds.top - Top;
        tmpFillBrushObj.ptOrigin.x += dc->ptlDCOrig.x;
        tmpFillBrushObj.ptOrigin.y += dc->ptlDCOrig.y;
 
        DC_vPrepareDCsForBlit(dc, &RectBounds, NULL, NULL);
 
        ret = IntFillEllipse( dc,
                              CenterX - RadiusX,
                              CenterY - RadiusY,
                              RadiusX*2, // Width
                              RadiusY*2, // Height
                              &tmpFillBrushObj);
        BRUSH_ShareUnlockBrush(pFillBrushObj);
 
        if (ret)
        {
           ret = IntDrawEllipse( dc,
                                 CenterX - RadiusX,
                                 CenterY - RadiusY,
                                 RadiusX*2, // Width
                                 RadiusY*2, // Height
                                 pbrush);
        }
 
        DC_vFinishBlit(dc, NULL);
    }
 
    pbrush->lWidth = PenOrigWidth;
    PEN_ShareUnlockPen(pbrush);
    DC_UnlockDc(dc);
    DPRINT("Ellipse Exit.\n");
    return ret;
}

NtGdiExtFloodFill()

BOOL APIENTRY NtGdiExtFloodFill	(	HDC	hDC,
		INT	XStart,
		INT	YStart,
		COLORREF	Color,
		UINT	FillType
	)

Definition at line 1136 of file fillshap.c.

{
    PDC dc;
#if 0
    PDC_ATTR   pdcattr;
#endif
    SURFACE    *psurf;
    EXLATEOBJ  exlo;
    BOOL       Ret = FALSE;
    RECTL      DestRect;
    POINTL     Pt;
    ULONG      ConvColor;
    PREGION    prgn;
 
    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    if (!dc->dclevel.pSurface)
    {
        Ret = TRUE;
        goto cleanup;
    }
 
#if 0
    pdcattr = dc->pdcattr;
#endif
 
    Pt.x = XStart;
    Pt.y = YStart;
    IntLPtoDP(dc, (LPPOINT)&Pt, 1);
 
    DC_vPrepareDCsForBlit(dc, &DestRect, NULL, NULL);
 
    psurf = dc->dclevel.pSurface;
 
    prgn = dc->prgnRao ? dc->prgnRao : dc->prgnVis;
    if (prgn)
    {
        Ret = REGION_PtInRegion(prgn, Pt.x, Pt.y);
        if (Ret)
            REGION_GetRgnBox(prgn, (LPRECT)&DestRect);
        else
        {
            DC_vFinishBlit(dc, NULL);
            goto cleanup;
        }
    }
    else
    {
        RECTL_vSetRect(&DestRect, 0, 0, psurf->SurfObj.sizlBitmap.cx, psurf->SurfObj.sizlBitmap.cy);
    }
 
    if (dc->fs & (DC_ACCUM_APP|DC_ACCUM_WMGR))
    {
       IntUpdateBoundsRect(dc, &DestRect);
    }
 
    EXLATEOBJ_vInitialize(&exlo, &gpalRGB, psurf->ppal, 0, 0xffffff, 0);
 
    /* Only solid fills supported for now
     * How to support pattern brushes and non standard surfaces (not offering dib functions):
     * Version a (most likely slow): call DrvPatBlt for every pixel
     * Version b: create a flood mask and let MaskBlt blit a masked brush */
    ConvColor = XLATEOBJ_iXlate(&exlo.xlo, Color);
    Ret = DIB_XXBPP_FloodFillSolid(&psurf->SurfObj, &dc->eboFill.BrushObject, &DestRect, &Pt, ConvColor, FillType);
 
    DC_vFinishBlit(dc, NULL);
 
    EXLATEOBJ_vCleanup(&exlo);
 
cleanup:
    DC_UnlockDc(dc);
    return Ret;
}

NtGdiGradientFill()

BOOL APIENTRY NtGdiGradientFill	(	HDC	hdc,
		PTRIVERTEX	pVertex,
		ULONG	nVertex,
		PVOID	pMesh,
		ULONG	nMesh,
		ULONG	ulMode
	)

Definition at line 1060 of file fillshap.c.

{
    BOOL bRet;
    PTRIVERTEX SafeVertex;
    PVOID SafeMesh;
    ULONG cbVertex, cbMesh;
 
    /* Validate parameters */
    if (!pVertex || !nVertex || !pMesh || !nMesh)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    switch (ulMode)
    {
        case GRADIENT_FILL_RECT_H:
        case GRADIENT_FILL_RECT_V:
            cbMesh = nMesh * sizeof(GRADIENT_RECT);
            break;
        case GRADIENT_FILL_TRIANGLE:
            cbMesh = nMesh * sizeof(GRADIENT_TRIANGLE);
            break;
        default:
            EngSetLastError(ERROR_INVALID_PARAMETER);
            return FALSE;
    }
 
    cbVertex = nVertex * sizeof(TRIVERTEX) ;
    if(cbVertex + cbMesh <= cbVertex)
    {
        /* Overflow */
        return FALSE ;
    }
 
    /* Allocate a kernel mode buffer */
    SafeVertex = ExAllocatePoolWithTag(PagedPool, cbVertex + cbMesh, TAG_SHAPE);
    if(!SafeVertex)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }
 
    SafeMesh = (PVOID)((ULONG_PTR)SafeVertex + cbVertex);
 
    /* Copy the parameters to kernel mode */
    _SEH2_TRY
    {
        ProbeForRead(pVertex, cbVertex, 1);
        ProbeForRead(pMesh, cbMesh, 1);
        RtlCopyMemory(SafeVertex, pVertex, cbVertex);
        RtlCopyMemory(SafeMesh, pMesh, cbMesh);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        ExFreePoolWithTag(SafeVertex, TAG_SHAPE);
        SetLastNtError(_SEH2_GetExceptionCode());
        _SEH2_YIELD(return FALSE;)
    }
    _SEH2_END;
 
    /* Call the internal function */
    bRet = GreGradientFill(hdc, SafeVertex, nVertex, SafeMesh, nMesh, ulMode);
 
    /* Cleanup and return result */
    ExFreePoolWithTag(SafeVertex, TAG_SHAPE);
    return bRet;
}

NtGdiPolyPolyDraw()

ULONG_PTR APIENTRY NtGdiPolyPolyDraw	(	IN HDC	hDC,
		IN PPOINT	UnsafePoints,
		IN PULONG	UnsafeCounts,
		IN ULONG	Count,
		IN INT	iFunc
	)

Definition at line 409 of file fillshap.c.

{
    DC *dc;
    PVOID pTemp;
    LPPOINT SafePoints;
    PULONG SafeCounts;
    NTSTATUS Status = STATUS_SUCCESS;
    BOOL Ret = TRUE;
    ULONG nPoints = 0, nMaxPoints = 0, nInvalid = 0, i;
 
    if (!UnsafePoints || !UnsafeCounts ||
        Count == 0 || iFunc == 0 || iFunc > GdiPolyPolyRgn)
    {
        /* Windows doesn't set last error */
        return FALSE;
    }
 
    _SEH2_TRY
    {
        ProbeForRead(UnsafePoints, Count * sizeof(POINT), 1);
        ProbeForRead(UnsafeCounts, Count * sizeof(ULONG), 1);
 
        /* Count points and validate poligons */
        for (i = 0; i < Count; i++)
        {
            if (UnsafeCounts[i] < 2)
            {
                nInvalid++;
            }
            nPoints += UnsafeCounts[i];
            nMaxPoints = max(nMaxPoints, UnsafeCounts[i]);
        }
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END;
 
    if (!NT_SUCCESS(Status))
    {
        /* Windows doesn't set last error */
        return FALSE;
    }
 
    if (nPoints == 0 || nPoints < nMaxPoints)
    {
        /* If all polygon counts are zero, or we have overflow,
           return without setting a last error code. */
        return FALSE;
    }
 
    if (nInvalid != 0)
    {
        /* If at least one poly count is 0 or 1, fail */
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    /* Allocate one buffer for both counts and points */
    pTemp = ExAllocatePoolWithTag(PagedPool,
                                  Count * sizeof(ULONG) + nPoints * sizeof(POINT),
                                  TAG_SHAPE);
    if (!pTemp)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }
 
    SafeCounts = pTemp;
    SafePoints = (PVOID)(SafeCounts + Count);
 
    _SEH2_TRY
    {
        /* Pointers already probed! */
        RtlCopyMemory(SafeCounts, UnsafeCounts, Count * sizeof(ULONG));
        RtlCopyMemory(SafePoints, UnsafePoints, nPoints * sizeof(POINT));
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END;
 
    if (!NT_SUCCESS(Status))
    {
        ExFreePoolWithTag(pTemp, TAG_SHAPE);
        return FALSE;
    }
 
    /* Special handling for GdiPolyPolyRgn */
    if (iFunc == GdiPolyPolyRgn)
    {
        INT iMode = (INT)(UINT_PTR)hDC;
        HRGN hrgn;
 
        hrgn = GreCreatePolyPolygonRgn(SafePoints, SafeCounts, Count, iMode);
 
        ExFreePoolWithTag(pTemp, TAG_SHAPE);
        return (ULONG_PTR)hrgn;
    }
 
    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        ExFreePoolWithTag(pTemp, TAG_SHAPE);
        return FALSE;
    }
 
    DC_vPrepareDCsForBlit(dc, NULL, NULL, NULL);
 
    if (dc->pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
        DC_vUpdateFillBrush(dc);
 
    if (dc->pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(dc);
 
    /* Perform the actual work */
    switch (iFunc)
    {
        case GdiPolyPolygon:
            Ret = IntGdiPolyPolygon(dc, SafePoints, SafeCounts, Count);
            break;
        case GdiPolyPolyLine:
            Ret = IntGdiPolyPolyline(dc, SafePoints, SafeCounts, Count);
            break;
        case GdiPolyBezier:
            Ret = IntGdiPolyBezier(dc, SafePoints, *SafeCounts);
            break;
        case GdiPolyLineTo:
            Ret = IntGdiPolylineTo(dc, SafePoints, *SafeCounts);
            break;
        case GdiPolyBezierTo:
            Ret = IntGdiPolyBezierTo(dc, SafePoints, *SafeCounts);
            break;
        default:
            EngSetLastError(ERROR_INVALID_PARAMETER);
            Ret = FALSE;
    }
 
    /* Cleanup and return */
    DC_vFinishBlit(dc, NULL);
    DC_UnlockDc(dc);
    ExFreePoolWithTag(pTemp, TAG_SHAPE);
 
    return (ULONG_PTR)Ret;
}

NtGdiRectangle()

BOOL APIENTRY NtGdiRectangle	(	HDC	hDC,
		int	LeftRect,
		int	TopRect,
		int	RightRect,
		int	BottomRect
	)

Definition at line 741 of file fillshap.c.

{
    DC   *dc;
    BOOL ret; // Default to failure
 
    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    /* Do we rotate or shear? */
    if (!(dc->pdcattr->mxWorldToDevice.flAccel & XFORM_SCALE))
    {
        POINTL DestCoords[4];
        ULONG PolyCounts = 4;
 
        DestCoords[0].x = DestCoords[3].x = LeftRect;
        DestCoords[0].y = DestCoords[1].y = TopRect;
        DestCoords[1].x = DestCoords[2].x = RightRect;
        DestCoords[2].y = DestCoords[3].y = BottomRect;
        // Use IntGdiPolyPolygon so to support PATH.
        ret = IntGdiPolyPolygon(dc, DestCoords, &PolyCounts, 1);
    }
    else
    {
        ret = IntRectangle(dc, LeftRect, TopRect, RightRect, BottomRect );
    }
 
    DC_UnlockDc(dc);
 
    return ret;
}

NtGdiRoundRect()

BOOL APIENTRY NtGdiRoundRect	(	HDC	hDC,
		int	LeftRect,
		int	TopRect,
		int	RightRect,
		int	BottomRect,
		int	Width,
		int	Height
	)

Definition at line 911 of file fillshap.c.

{
    DC   *dc = DC_LockDc(hDC);
    BOOL  ret = FALSE; /* Default to failure */
 
    DPRINT("NtGdiRoundRect(0x%p,%i,%i,%i,%i,%i,%i)\n",hDC,LeftRect,TopRect,RightRect,BottomRect,Width,Height);
    if ( !dc )
    {
        DPRINT1("NtGdiRoundRect() - hDC is invalid\n");
        EngSetLastError(ERROR_INVALID_HANDLE);
    }
    else
    {
        ret = IntRoundRect ( dc, LeftRect, TopRect, RightRect, BottomRect, Width, Height );
        DC_UnlockDc ( dc );
    }
 
    return ret;
}