path.c File Reference

#include <win32k.h>
#include <suppress.h>

Include dependency graph for path.c:

Go to the source code of this file.

Macros
#define	NUM_ENTRIES_INITIAL   16 /* Initial size of points / flags arrays */
#define	GROW_FACTOR_NUMER   2 /* Numerator of grow factor for the array */
#define	GROW_FACTOR_DENOM   1 /* Denominator of grow factor */
#define	round(x)   ((int)((x)>0?(x)+0.5:(x)-0.5))

Functions
	DBG_DEFAULT_CHANNEL (GdiPath)
PPATH FASTCALL	PATH_CreatePath (int count)
VOID FASTCALL	PATH_DestroyGdiPath (PPATH pPath)
BOOL FASTCALL	PATH_Delete (HPATH hPath)
VOID FASTCALL	IntGdiCloseFigure (PPATH pPath)
BOOL FASTCALL	GdiPathDPtoLP (PDC pdc, PPOINT ppt, INT count)
VOID FASTCALL	PATH_InitGdiPath (PPATH pPath)
BOOL FASTCALL	PATH_AssignGdiPath (PPATH pPathDest, const PPATH pPathSrc)
BOOL	PATH_SavePath (DC *dst, DC *src)
BOOL	PATH_RestorePath (DC *dst, DC *src)
VOID FASTCALL	PATH_EmptyPath (PPATH pPath)
BOOL FASTCALL	PATH_AddEntry (PPATH pPath, const POINT *pPoint, BYTE flags)
BOOL FASTCALL	PATH_ReserveEntries (PPATH pPath, INT numEntries)
static BOOLEAN	PATH_ScaleNormalizedPoint (POINT corners[], FLOATL x, FLOATL y, POINT *pPoint)
static VOID	PATH_NormalizePoint (POINTL corners[], const POINTL *pPoint, FLOATL *pX, FLOATL *pY)
static BOOL	PATH_CheckRect (DC *dc, RECTL *rect, INT x1, INT y1, INT x2, INT y2)
static BYTE *	add_log_points (DC *dc, PPATH path, const POINT *points, DWORD count, BYTE type, BOOL bExtraPt)
static BYTE *	add_points (PPATH path, const POINT *points, DWORD count, BYTE type)
static void	reverse_points (POINT *points, UINT count)
static BOOL	start_new_stroke (PPATH path)
static void	update_current_pos (PPATH path)
static void	close_figure (PPATH path)
static BOOL	add_log_points_new_stroke (DC *dc, PPATH path, const POINT *points, DWORD count, BYTE type, BOOL bExtraPt)
BOOL FASTCALL	PATH_MoveTo (PDC dc, PPATH pPath)
BOOL FASTCALL	PATH_LineTo (PDC dc, INT x, INT y)
BOOL FASTCALL	PATH_Rectangle (PDC dc, INT x1, INT y1, INT x2, INT y2)
BOOL	PATH_RoundRect (DC *dc, INT x1, INT y1, INT x2, INT y2, INT ell_width, INT ell_height)
BOOL	PATH_Ellipse (PDC dc, INT x1, INT y1, INT x2, INT y2)
static BOOL	PATH_DoArcPart (PPATH pPath, POINT corners[], double angleStart, double angleEnd, BYTE startEntryType)
BOOL FASTCALL	PATH_Arc (PDC dc, INT x1, INT y1, INT x2, INT y2, INT xStart, INT yStart, INT xEnd, INT yEnd, INT direction, INT lines)
BOOL FASTCALL	PATH_PolyBezierTo (PDC dc, const POINT *pts, DWORD cbPoints)
BOOL FASTCALL	PATH_PolyBezier (PDC dc, const POINT *pts, DWORD cbPoints)
BOOL FASTCALL	PATH_PolyDraw (PDC dc, const POINT *pts, const BYTE *types, DWORD cbPoints)
BOOL FASTCALL	PATH_PolylineTo (PDC dc, const POINT *pts, DWORD cbPoints)
BOOL FASTCALL	PATH_PolyPolygon (PDC dc, const POINT *pts, const INT *counts, UINT polygons)
BOOL FASTCALL	PATH_PolyPolyline (PDC dc, const POINT *pts, const DWORD *counts, DWORD polylines)
BOOL FASTCALL	PATH_AddFlatBezier (PPATH pPath, POINT *pt, BOOL closed)
PPATH FASTCALL	PATH_FlattenPath (PPATH pPath)
BOOL FASTCALL	PATH_PathToRegion (PPATH pPath, INT Mode, PREGION Rgn)
BOOL FASTCALL	PATH_FillPath (PDC dc, PPATH pPath)
BOOL FASTCALL	PATH_FillPathEx (PDC dc, PPATH pPath, PBRUSH pbrFill)
BOOL FASTCALL	PATH_StrokePath (DC *dc, PPATH pPath)
PPATH FASTCALL	IntGdiWidenPath (PPATH pPath, UINT penWidth, UINT penStyle, FLOAT eMiterLimit)
static PPATH FASTCALL	PATH_WidenPath (DC *dc)
PPATH FASTCALL	PATH_WidenPathEx (DC *dc, PPATH pPath)
static INT	int_from_fixed (FIXED f)
static VOID FASTCALL	PATH_BezierTo (PPATH pPath, POINT *lppt, INT n)
static BOOL FASTCALL	PATH_add_outline (PDC dc, PPATH pPath, INT x, INT y, TTPOLYGONHEADER *header, DWORD size)
BOOL FASTCALL	PATH_ExtTextOut (PDC dc, INT x, INT y, UINT flags, const RECTL *lprc, LPCWSTR str, UINT count, const INT *dx)
BOOL APIENTRY	NtGdiAbortPath (HDC hDC)
BOOL APIENTRY	NtGdiBeginPath (HDC hDC)
BOOL APIENTRY	NtGdiCloseFigure (HDC hDC)
BOOL APIENTRY	NtGdiEndPath (HDC hDC)
BOOL APIENTRY	NtGdiFillPath (HDC hDC)
BOOL APIENTRY	NtGdiFlattenPath (HDC hDC)
	_Success_ (return !=FALSE)
INT APIENTRY	NtGdiGetPath (HDC hDC, LPPOINT Points, LPBYTE Types, INT nSize)
HRGN APIENTRY	NtGdiPathToRegion (HDC hDC)
BOOL APIENTRY	NtGdiSetMiterLimit (IN HDC hdc, IN DWORD dwNew, IN OUT OPTIONAL PDWORD pdwOut)
BOOL APIENTRY	NtGdiStrokeAndFillPath (HDC hDC)
BOOL APIENTRY	NtGdiStrokePath (HDC hDC)
BOOL APIENTRY	NtGdiWidenPath (HDC hDC)

Macro Definition Documentation

GROW_FACTOR_DENOM

#define GROW_FACTOR_DENOM   1 /* Denominator of grow factor */

Definition at line 24 of file path.c.

GROW_FACTOR_NUMER

#define GROW_FACTOR_NUMER   2 /* Numerator of grow factor for the array */

Definition at line 23 of file path.c.

NUM_ENTRIES_INITIAL

#define NUM_ENTRIES_INITIAL   16 /* Initial size of points / flags arrays */

Definition at line 21 of file path.c.

round

#define round

(

x

)

((int)((x)>0?(x)+0.5:(x)-0.5))

Definition at line 1799 of file path.c.

Function Documentation

_Success_()

_Success_

(

return !

= FALSE

)

Definition at line 2741 of file path.c.

{
    DC *pDc;
    BOOL bResult = TRUE;
 
    if (!(pDc = DC_LockDc(hdc)))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    _SEH2_TRY
    {
        ProbeForWrite(pdwOut, sizeof(DWORD), 1);
        *pdwOut = pDc->dclevel.laPath.eMiterLimit;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        SetLastNtError(_SEH2_GetExceptionCode());
        bResult = FALSE;
    }
    _SEH2_END;
 
    DC_UnlockDc(pDc);
    return bResult;
 
}

add_log_points()

static BYTE * add_log_points ( DC *  dc, PPATH  path, const POINT *  points, DWORD  count, BYTE  type, BOOL  bExtraPt  )

static

Definition at line 463 of file path.c.

{
    BYTE *ret;
 
    if (!PATH_ReserveEntries( path, path->numEntriesUsed + count )) return NULL;
 
    ret = &path->pFlags[path->numEntriesUsed];
 
    if (bExtraPt && path->numEntriesUsed == 1)
    {
        memcpy(&path->pPoints[0], points, (count + 1) * sizeof(*points));
        IntLPtoDP(dc, &path->pPoints[0], count + 1);
    }
    else
    {
        memcpy(&path->pPoints[path->numEntriesUsed], points, count * sizeof(*points));
        IntLPtoDP(dc, &path->pPoints[path->numEntriesUsed], count);
    }
 
    memset( ret, type, count );
    path->numEntriesUsed += count;
    return ret;
}

Referenced by add_log_points_new_stroke(), PATH_PolyBezier(), and PATH_PolyPolygon().

add_log_points_new_stroke()

static BOOL add_log_points_new_stroke ( DC *  dc, PPATH  path, const POINT *  points, DWORD  count, BYTE  type, BOOL  bExtraPt  )

static

Definition at line 543 of file path.c.

{
    if (!start_new_stroke( path )) return FALSE;
    if (!add_log_points(dc, path, points, count, type, bExtraPt)) return FALSE;
    update_current_pos( path );
 
    TRACE("ALPNS : Pos X %d Y %d\n",path->pos.x, path->pos.y);
    IntGdiMoveToEx(dc, path->pos.x, path->pos.y, NULL);
 
    return TRUE;
}

Referenced by PATH_LineTo(), PATH_PolyBezierTo(), PATH_PolyDraw(), and PATH_PolylineTo().

add_points()

static BYTE * add_points ( PPATH  path, const POINT *  points, DWORD  count, BYTE  type  )

static

Definition at line 490 of file path.c.

{
    BYTE *ret;
 
    if (!PATH_ReserveEntries( path, path->numEntriesUsed + count )) return NULL;
 
    ret = &path->pFlags[path->numEntriesUsed];
    memcpy( &path->pPoints[path->numEntriesUsed], points, count * sizeof(*points) );
    memset( ret, type, count );
    path->numEntriesUsed += count;
    return ret;
}

Referenced by IntGdiWidenPath(), PATH_BezierTo(), PATH_DoArcPart(), PATH_Ellipse(), PATH_Rectangle(), PATH_RoundRect(), and start_new_stroke().

close_figure()

static void close_figure ( PPATH  path )

static

Definition at line 536 of file path.c.

{
    ASSERT(path->numEntriesUsed);
    path->pFlags[path->numEntriesUsed - 1] |= PT_CLOSEFIGURE;
}

Referenced by PATH_PolyDraw().

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

GdiPath

)

GdiPathDPtoLP()

BOOL FASTCALL GdiPathDPtoLP	(	PDC	pdc,
		PPOINT	ppt,
		INT	count
	)

Definition at line 125 of file path.c.

{
    XFORMOBJ xo;
 
    XFORMOBJ_vInit(&xo, &pdc->pdcattr->mxDeviceToWorld);
    return XFORMOBJ_bApplyXform(&xo, XF_LTOL, count, (PPOINTL)ppt, (PPOINTL)ppt);
}

Referenced by NtGdiGetPath().

int_from_fixed()

static INT int_from_fixed ( FIXED  f )

inlinestatic

Definition at line 2216 of file path.c.

{
    return (f.fract >= 0x8000) ? (f.value + 1) : f.value;
}

Referenced by PATH_add_outline().

IntGdiCloseFigure()

VOID FASTCALL IntGdiCloseFigure

(

PPATH

pPath

)

Definition at line 108 of file path.c.

{
    ASSERT(pPath->state == PATH_Open);
 
    // FIXME: Shouldn't we draw a line to the beginning of the figure?
    // Set PT_CLOSEFIGURE on the last entry and start a new stroke
    if (pPath->numEntriesUsed)
    {
        pPath->pFlags[pPath->numEntriesUsed - 1] |= PT_CLOSEFIGURE;
        pPath->newStroke = TRUE;
    }
}

Referenced by NtGdiCloseFigure(), PATH_add_outline(), PATH_Arc(), PATH_Ellipse(), PATH_Rectangle(), and PATH_RoundRect().

IntGdiWidenPath()

PPATH FASTCALL IntGdiWidenPath	(	PPATH	pPath,
		UINT	penWidth,
		UINT	penStyle,
		FLOAT	eMiterLimit
	)

Definition at line 1802 of file path.c.

{
    INT i, j, numStrokes, numOldStrokes, penWidthIn, penWidthOut;
    PPATH flat_path, pNewPath = NULL, *pStrokes = NULL, *pOldStrokes, pUpPath, pDownPath;
    BYTE *type;
    DWORD joint, endcap;
    KFLOATING_SAVE fpsave;
 
    endcap = (PS_ENDCAP_MASK & penStyle);
    joint = (PS_JOIN_MASK & penStyle);
 
    if (!(flat_path = PATH_FlattenPath(pPath)))
    {
        ERR("PATH_FlattenPath\n");
        return NULL;
    }
 
    penWidthIn = penWidth / 2;
    penWidthOut = penWidth / 2;
    if (penWidthIn + penWidthOut < penWidth)
        penWidthOut++;
 
    numStrokes = 0;
 
    for (i = 0, j = 0; i < flat_path->numEntriesUsed; i++, j++)
    {
        POINT point;
        if ((i == 0 || (flat_path->pFlags[i - 1] & PT_CLOSEFIGURE)) &&
                (flat_path->pFlags[i] != PT_MOVETO))
        {
            ERR("Expected PT_MOVETO %s, got path flag %c\n",
                    i == 0 ? "as first point" : "after PT_CLOSEFIGURE",
                    flat_path->pFlags[i]);
            goto Exit;
        }
        switch(flat_path->pFlags[i])
        {
            case PT_MOVETO:
                if (numStrokes > 0)
                {
                    pStrokes[numStrokes - 1]->state = PATH_Closed;
                }
                numOldStrokes = numStrokes;
                numStrokes++;
                j = 0;
                if (numStrokes == 1)
                    pStrokes = ExAllocatePoolWithTag(PagedPool, sizeof(*pStrokes), TAG_PATH);
                else
                {
                    pOldStrokes = pStrokes; // Save old pointer.
                    pStrokes = ExAllocatePoolWithTag(PagedPool, numStrokes * sizeof(*pStrokes), TAG_PATH);
                    if (!pStrokes)
                    {
                       ExFreePoolWithTag(pOldStrokes, TAG_PATH);
                       goto Exit;
                    }
                    RtlCopyMemory(pStrokes, pOldStrokes, numOldStrokes * sizeof(PPATH));
                    ExFreePoolWithTag(pOldStrokes, TAG_PATH); // Free old pointer.
                }
                if (!pStrokes)
                {
                   goto Exit;
                }
                pStrokes[numStrokes - 1] = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
                if (!pStrokes[numStrokes - 1])
                {
                    ASSERT(FALSE); // FIXME
                }
                PATH_InitGdiPath(pStrokes[numStrokes - 1]);
                pStrokes[numStrokes - 1]->state = PATH_Open;
            case PT_LINETO:
            case (PT_LINETO | PT_CLOSEFIGURE):
                point.x = flat_path->pPoints[i].x;
                point.y = flat_path->pPoints[i].y;
                PATH_AddEntry(pStrokes[numStrokes - 1], &point, flat_path->pFlags[i]);
                break;
            case PT_BEZIERTO:
                /* Should never happen because of the FlattenPath call */
                ERR("Should never happen\n");
                break;
            default:
                ERR("Got path flag %c\n", flat_path->pFlags[i]);
                goto Exit;
        }
    }
 
    pNewPath = PATH_CreatePath( flat_path->numEntriesUsed );
    if (pNewPath == NULL)
    {
        ERR("PATH_CreatePath\n");
        goto Exit;
    }
 
    KeSaveFloatingPointState(&fpsave);
 
    for (i = 0; i < numStrokes; i++)
    {
        pUpPath = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
        PATH_InitGdiPath(pUpPath);
        pUpPath->state = PATH_Open;
        pDownPath = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
        PATH_InitGdiPath(pDownPath);
        pDownPath->state = PATH_Open;
 
        for (j = 0; j < pStrokes[i]->numEntriesUsed; j++)
        {
            /* Beginning or end of the path if not closed */
            if ((!(pStrokes[i]->pFlags[pStrokes[i]->numEntriesUsed - 1] & PT_CLOSEFIGURE)) && (j == 0 || j == pStrokes[i]->numEntriesUsed - 1))
            {
                /* Compute segment angle */
                INT xo, yo, xa, ya;
                double theta;
                POINT pt;
                POINT corners[2];
                if (j == 0)
                {
                    xo = pStrokes[i]->pPoints[j].x;
                    yo = pStrokes[i]->pPoints[j].y;
                    xa = pStrokes[i]->pPoints[1].x;
                    ya = pStrokes[i]->pPoints[1].y;
                }
                else
                {
                    xa = pStrokes[i]->pPoints[j - 1].x;
                    ya = pStrokes[i]->pPoints[j - 1].y;
                    xo = pStrokes[i]->pPoints[j].x;
                    yo = pStrokes[i]->pPoints[j].y;
                }
                theta = atan2(ya - yo, xa - xo);
                switch(endcap)
                {
                    case PS_ENDCAP_SQUARE :
                        pt.x = xo + round(sqrt(2) * penWidthOut * cos(M_PI_4 + theta));
                        pt.y = yo + round(sqrt(2) * penWidthOut * sin(M_PI_4 + theta));
                        PATH_AddEntry(pUpPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
                        pt.x = xo + round(sqrt(2) * penWidthIn * cos(- M_PI_4 + theta));
                        pt.y = yo + round(sqrt(2) * penWidthIn * sin(- M_PI_4 + theta));
                        PATH_AddEntry(pUpPath, &pt, PT_LINETO);
                        break;
                    case PS_ENDCAP_FLAT :
                        pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
                        pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
                        PATH_AddEntry(pUpPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
                        pt.x = xo - round(penWidthIn * cos(theta + M_PI_2));
                        pt.y = yo - round(penWidthIn * sin(theta + M_PI_2));
                        PATH_AddEntry(pUpPath, &pt, PT_LINETO);
                        break;
                    case PS_ENDCAP_ROUND :
                    default :
                        corners[0].x = xo - penWidthIn;
                        corners[0].y = yo - penWidthIn;
                        corners[1].x = xo + penWidthOut;
                        corners[1].y = yo + penWidthOut;
                        PATH_DoArcPart(pUpPath , corners, theta + M_PI_2 , theta + 3 * M_PI_4, (j == 0 ? PT_MOVETO : FALSE));
                        PATH_DoArcPart(pUpPath , corners, theta + 3 * M_PI_4 , theta + M_PI, FALSE);
                        PATH_DoArcPart(pUpPath , corners, theta + M_PI, theta +  5 * M_PI_4, FALSE);
                        PATH_DoArcPart(pUpPath , corners, theta + 5 * M_PI_4 , theta + 3 * M_PI_2, FALSE);
                        break;
                }
            }
            /* Corpse of the path */
            else
            {
                /* Compute angle */
                INT previous, next;
                double xa, ya, xb, yb, xo, yo;
                double alpha, theta, miterWidth;
                DWORD _joint = joint;
                POINT pt;
                PPATH pInsidePath, pOutsidePath;
                if (j > 0 && j < pStrokes[i]->numEntriesUsed - 1)
                {
                    previous = j - 1;
                    next = j + 1;
                }
                else if (j == 0)
                {
                    previous = pStrokes[i]->numEntriesUsed - 1;
                    next = j + 1;
                }
                else
                {
                    previous = j - 1;
                    next = 0;
                }
                xo = pStrokes[i]->pPoints[j].x;
                yo = pStrokes[i]->pPoints[j].y;
                xa = pStrokes[i]->pPoints[previous].x;
                ya = pStrokes[i]->pPoints[previous].y;
                xb = pStrokes[i]->pPoints[next].x;
                yb = pStrokes[i]->pPoints[next].y;
                theta = atan2(yo - ya, xo - xa);
                alpha = atan2(yb - yo, xb - xo) - theta;
                if (alpha > 0) alpha -= M_PI;
                else alpha += M_PI;
                if (_joint == PS_JOIN_MITER && eMiterLimit < fabs(1 / sin(alpha / 2)))
                {
                    _joint = PS_JOIN_BEVEL;
                }
                if (alpha > 0)
                {
                    pInsidePath = pUpPath;
                    pOutsidePath = pDownPath;
                }
                else if (alpha < 0)
                {
                    pInsidePath = pDownPath;
                    pOutsidePath = pUpPath;
                }
                else
                {
                    continue;
                }
                /* Inside angle points */
                if (alpha > 0)
                {
                    pt.x = xo - round(penWidthIn * cos(theta + M_PI_2));
                    pt.y = yo - round(penWidthIn * sin(theta + M_PI_2));
                }
                else
                {
                    pt.x = xo + round(penWidthIn * cos(theta + M_PI_2));
                    pt.y = yo + round(penWidthIn * sin(theta + M_PI_2));
                }
                PATH_AddEntry(pInsidePath, &pt, PT_LINETO);
                if (alpha > 0)
                {
                    pt.x = xo + round(penWidthIn * cos(M_PI_2 + alpha + theta));
                    pt.y = yo + round(penWidthIn * sin(M_PI_2 + alpha + theta));
                }
                else
                {
                    pt.x = xo - round(penWidthIn * cos(M_PI_2 + alpha + theta));
                    pt.y = yo - round(penWidthIn * sin(M_PI_2 + alpha + theta));
                }
                PATH_AddEntry(pInsidePath, &pt, PT_LINETO);
                /* Outside angle point */
                switch(_joint)
                {
                    case PS_JOIN_MITER :
                        miterWidth = fabs(penWidthOut / cos(M_PI_2 - fabs(alpha) / 2));
                        pt.x = xo + round(miterWidth * cos(theta + alpha / 2));
                        pt.y = yo + round(miterWidth * sin(theta + alpha / 2));
                        PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
                        break;
                    case PS_JOIN_BEVEL :
                        if (alpha > 0)
                        {
                            pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
                            pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
                        }
                        else
                        {
                            pt.x = xo - round(penWidthOut * cos(theta + M_PI_2));
                            pt.y = yo - round(penWidthOut * sin(theta + M_PI_2));
                        }
                        PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
                        if (alpha > 0)
                        {
                            pt.x = xo - round(penWidthOut * cos(M_PI_2 + alpha + theta));
                            pt.y = yo - round(penWidthOut * sin(M_PI_2 + alpha + theta));
                        }
                        else
                        {
                            pt.x = xo + round(penWidthOut * cos(M_PI_2 + alpha + theta));
                            pt.y = yo + round(penWidthOut * sin(M_PI_2 + alpha + theta));
                        }
                        PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
                        break;
                    case PS_JOIN_ROUND :
                    default :
                        if (alpha > 0)
                        {
                            pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
                            pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
                        }
                        else
                        {
                            pt.x = xo - round(penWidthOut * cos(theta + M_PI_2));
                            pt.y = yo - round(penWidthOut * sin(theta + M_PI_2));
                        }
                        PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
                        pt.x = xo + round(penWidthOut * cos(theta + alpha / 2));
                        pt.y = yo + round(penWidthOut * sin(theta + alpha / 2));
                        PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
                        if (alpha > 0)
                        {
                            pt.x = xo - round(penWidthOut * cos(M_PI_2 + alpha + theta));
                            pt.y = yo - round(penWidthOut * sin(M_PI_2 + alpha + theta));
                        }
                        else
                        {
                            pt.x = xo + round(penWidthOut * cos(M_PI_2 + alpha + theta));
                            pt.y = yo + round(penWidthOut * sin(M_PI_2 + alpha + theta));
                        }
                        PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
                        break;
                }
            }
        }
        type = add_points( pNewPath, pUpPath->pPoints, pUpPath->numEntriesUsed, PT_LINETO );
        type[0] = PT_MOVETO;
        reverse_points( pDownPath->pPoints, pDownPath->numEntriesUsed );
        type = add_points( pNewPath, pDownPath->pPoints, pDownPath->numEntriesUsed, PT_LINETO );
        if (pStrokes[i]->pFlags[pStrokes[i]->numEntriesUsed - 1] & PT_CLOSEFIGURE) type[0] = PT_MOVETO;
 
        PATH_DestroyGdiPath(pStrokes[i]);
        ExFreePoolWithTag(pStrokes[i], TAG_PATH);
        PATH_DestroyGdiPath(pUpPath);
        ExFreePoolWithTag(pUpPath, TAG_PATH);
        PATH_DestroyGdiPath(pDownPath);
        ExFreePoolWithTag(pDownPath, TAG_PATH);
    }
 
    pNewPath->state = PATH_Closed;
    PATH_UnlockPath(pNewPath);
 
    KeRestoreFloatingPointState(&fpsave);
 
Exit:
    if (pStrokes) ExFreePoolWithTag(pStrokes, TAG_PATH);
    HPATH hpathToDelete = flat_path->BaseObject.hHmgr;
    PATH_UnlockPath(flat_path);
    PATH_Delete(hpathToDelete);
 
    return pNewPath;
}

Referenced by PATH_WidenPathEx().

NtGdiAbortPath()

BOOL APIENTRY NtGdiAbortPath

(

HDC

hDC

)

Definition at line 2474 of file path.c.

{
    PDC dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    if (!dc->dclevel.hPath)
    {
       DC_UnlockDc(dc);
       return TRUE;
    }
 
    if (!PATH_Delete(dc->dclevel.hPath))
    {
       DC_UnlockDc(dc);
       return FALSE;
    }
 
    dc->dclevel.hPath = 0;
    dc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
    DC_UnlockDc(dc);
    return TRUE;
}

NtGdiBeginPath()

BOOL APIENTRY NtGdiBeginPath

(

HDC

hDC

)

Definition at line 2504 of file path.c.

{
    PPATH pPath;
    PDC dc;
 
    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    /* If path is already open, do nothing. Check if not Save DC state */
    if ((dc->dclevel.flPath & DCPATH_ACTIVE) && !(dc->dclevel.flPath & DCPATH_SAVE))
    {
        DC_UnlockDc(dc);
        return TRUE;
    }
 
    if (dc->dclevel.hPath)
    {
        TRACE("BeginPath 1 0x%p\n", dc->dclevel.hPath);
        if (!(dc->dclevel.flPath & DCPATH_SAVE))
        {
            // Remove previous handle.
            if (!PATH_Delete(dc->dclevel.hPath))
            {
                DC_UnlockDc(dc);
                return FALSE;
            }
        }
        else
        {
            // Clear flags and Handle.
            dc->dclevel.flPath &= ~(DCPATH_SAVE | DCPATH_ACTIVE);
            dc->dclevel.hPath = NULL;
        }
    }
    pPath = PATH_CreatePath(NUM_ENTRIES_INITIAL);
    dc->dclevel.flPath |= DCPATH_ACTIVE; // Set active ASAP!
    dc->dclevel.hPath = pPath->BaseObject.hHmgr;
    IntGetCurrentPositionEx(dc, &pPath->pos);
    IntLPtoDP( dc, &pPath->pos, 1 );
    TRACE("BP : Current pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
    PATH_UnlockPath(pPath);
    DC_UnlockDc(dc);
 
    if (!pPath)
    {
        return FALSE;
    }
    return TRUE;
}

NtGdiCloseFigure()

BOOL APIENTRY NtGdiCloseFigure

(

HDC

hDC

)

Definition at line 2560 of file path.c.

{
    BOOL Ret = FALSE; // Default to failure
    PDC pDc;
    PPATH pPath;
 
    TRACE("Enter %s\n", __FUNCTION__);
 
    pDc = DC_LockDc(hDC);
    if (!pDc)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    pPath = PATH_LockPath(pDc->dclevel.hPath);
    if (!pPath)
    {
        DC_UnlockDc(pDc);
        return FALSE;
    }
 
    if (pPath->state == PATH_Open)
    {
        IntGdiCloseFigure(pPath);
        Ret = TRUE;
    }
    else
    {
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
    }
 
    PATH_UnlockPath(pPath);
    DC_UnlockDc(pDc);
    return Ret;
}

NtGdiEndPath()

BOOL APIENTRY NtGdiEndPath

(

HDC

hDC

)

Definition at line 2599 of file path.c.

{
    BOOL ret = TRUE;
    PPATH pPath;
    PDC dc;
 
    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
    {
        DC_UnlockDc(dc);
        return FALSE;
    }
 
    /* Check that path is currently being constructed */
    if ((pPath->state != PATH_Open) || !(dc->dclevel.flPath & DCPATH_ACTIVE))
    {
        TRACE("EndPath ERROR! 0x%p\n", dc->dclevel.hPath);
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
        ret = FALSE;
    }
    /* Set flag to indicate that path is finished */
    else
    {
        TRACE("EndPath 0x%p\n", dc->dclevel.hPath);
        pPath->state = PATH_Closed;
        dc->dclevel.flPath &= ~DCPATH_ACTIVE;
    }
 
    PATH_UnlockPath(pPath);
    DC_UnlockDc(dc);
    return ret;
}

NtGdiFillPath()

BOOL APIENTRY NtGdiFillPath

(

HDC

hDC

)

Definition at line 2641 of file path.c.

{
    BOOL ret = FALSE;
    PPATH pPath, pNewPath;
    PDC_ATTR pdcattr;
    PDC dc;
 
    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
    {
        DC_UnlockDc(dc);
        return FALSE;
    }
 
    DC_vPrepareDCsForBlit(dc, NULL, NULL, NULL);
 
    pdcattr = dc->pdcattr;
 
    if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(dc);
 
    if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
        DC_vUpdateFillBrush(dc);
 
    pNewPath = PATH_FlattenPath(pPath);
 
    if (pNewPath->state != PATH_Closed)
    {
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
    }
    else if (pNewPath->numEntriesUsed)
    {
       ret = PATH_FillPath(dc, pNewPath);
    }
    else ret = TRUE;
 
    PATH_UnlockPath(pNewPath);
    PATH_Delete(pNewPath->BaseObject.hHmgr);
 
    PATH_UnlockPath(pPath);
    PATH_Delete(pPath->BaseObject.hHmgr);
    dc->dclevel.hPath = 0;
    dc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
    DC_vFinishBlit(dc, NULL);
    DC_UnlockDc(dc);
    return ret;
}

NtGdiFlattenPath()

BOOL APIENTRY NtGdiFlattenPath

(

HDC

hDC

)

Definition at line 2699 of file path.c.

{
    BOOL Ret = FALSE;
    DC *pDc;
    PPATH pPath, pNewPath = NULL;
 
    TRACE("Enter %s\n", __FUNCTION__);
 
    pDc = DC_LockDc(hDC);
    if (!pDc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    pPath = PATH_LockPath(pDc->dclevel.hPath);
    if (!pPath)
    {
        EngSetLastError( ERROR_CAN_NOT_COMPLETE );
        DC_UnlockDc(pDc);
        return FALSE;
    }
 
    if (pPath->state == PATH_Closed)
    {
        pNewPath = PATH_FlattenPath(pPath);
    }
 
    PATH_UnlockPath(pPath);
 
    if (pNewPath)
    {
       PATH_Delete(pDc->dclevel.hPath);
       pDc->dclevel.hPath = pNewPath->BaseObject.hHmgr;
       PATH_UnlockPath(pNewPath);
       Ret = TRUE;
    }
 
    DC_UnlockDc(pDc);
    return Ret;
}

NtGdiGetPath()

INT APIENTRY NtGdiGetPath	(	HDC	hDC,
		LPPOINT	Points,
		LPBYTE	Types,
		INT	nSize
	)

Definition at line 2776 of file path.c.

{
    INT ret = -1;
    PPATH pPath;
    DC *dc;
 
    _SEH2_TRY
    {
        ProbeForWrite(Points, nSize * sizeof(*Points), sizeof(ULONG));
        ProbeForWrite(Types, nSize, 1);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        SetLastNtError(_SEH2_GetExceptionCode());
        _SEH2_YIELD(return -1);
    }
    _SEH2_END
 
    dc = DC_LockDc(hDC);
    TRACE("NtGdiGetPath start\n");
    if (!dc)
    {
        ERR("Can't lock dc!\n");
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
    {
        DC_UnlockDc(dc);
        return -1;
    }
 
    if (pPath->state != PATH_Closed)
    {
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
        goto done;
    }
 
    if (nSize == 0)
    {
        ret = pPath->numEntriesUsed;
    }
    else if (nSize < pPath->numEntriesUsed)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        goto done;
    }
    else
    {
        _SEH2_TRY
        {
            memcpy(Points, pPath->pPoints, sizeof(POINT)*pPath->numEntriesUsed);
            memcpy(Types, pPath->pFlags, sizeof(BYTE)*pPath->numEntriesUsed);
 
            /* Convert the points to logical coordinates */
            if (!GdiPathDPtoLP(dc, Points, pPath->numEntriesUsed))
            {
                EngSetLastError(ERROR_ARITHMETIC_OVERFLOW);
                _SEH2_LEAVE;
            }
 
            ret = pPath->numEntriesUsed;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            SetLastNtError(_SEH2_GetExceptionCode());
        }
        _SEH2_END
    }
 
done:
    TRACE("NtGdiGetPath exit %d\n",ret);
    PATH_UnlockPath(pPath);
    DC_UnlockDc(dc);
    return ret;
}

NtGdiPathToRegion()

HRGN APIENTRY NtGdiPathToRegion

(

HDC

hDC

)

Definition at line 2861 of file path.c.

{
    PPATH pPath, pNewPath;
    HRGN  hrgnRval = 0;
    int Ret;
    PREGION Rgn;
    DC *pDc;
    PDC_ATTR pdcattr;
 
    TRACE("Enter %s\n", __FUNCTION__);
 
    pDc = DC_LockDc(hDC);
    if (!pDc)
    {
        ERR("Failed to lock DC %p\n", hDC);
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return NULL;
    }
 
    pdcattr = pDc->pdcattr;
 
    pPath = PATH_LockPath(pDc->dclevel.hPath);
    if (!pPath)
    {
        ERR("Failed to lock DC path %p\n", pDc->dclevel.hPath);
        DC_UnlockDc(pDc);
        return NULL;
    }
 
    if (pPath->state != PATH_Closed)
    {
        // FIXME: Check that setlasterror is being called correctly
        ERR("Path is not closed!\n");
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
    }
    else
    {
        /* Create the region and fill it with the path strokes */
        Rgn = REGION_AllocUserRgnWithHandle(1);
        if (!Rgn)
        {
            ERR("Failed to allocate a region\n");
            PATH_UnlockPath(pPath);
            DC_UnlockDc(pDc);
            return NULL;
        }
        hrgnRval = Rgn->BaseObject.hHmgr;
 
        pNewPath = PATH_FlattenPath(pPath);
        if (pNewPath == NULL)
        {
            ERR("Failed to flatten path %p\n", pDc->dclevel.hPath);
            REGION_Delete(Rgn);
            PATH_UnlockPath(pPath);
            DC_UnlockDc(pDc);
            return NULL;
        }
 
        Ret = PATH_PathToRegion(pNewPath, pdcattr->jFillMode, Rgn);
 
        PATH_UnlockPath(pNewPath);
        PATH_Delete(pNewPath->BaseObject.hHmgr);
 
        if (!Ret)
        {
            ERR("PATH_PathToRegion failed\n");
            REGION_Delete(Rgn);
            hrgnRval = NULL;
        }
        else
            REGION_UnlockRgn(Rgn);
    }
 
    PATH_UnlockPath(pPath);
    PATH_Delete(pDc->dclevel.hPath);
    pDc->dclevel.hPath = NULL;
    pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
    DC_UnlockDc(pDc);
    return hrgnRval;
}

NtGdiSetMiterLimit()

BOOL APIENTRY NtGdiSetMiterLimit	(	IN HDC	hdc,
		IN DWORD	dwNew,
		IN OUT OPTIONAL PDWORD	pdwOut
	)

Definition at line 2945 of file path.c.

{
    DC *pDc;
    gxf_long worker, worker1;
    BOOL bResult = TRUE;
 
    if (!(pDc = DC_LockDc(hdc)))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    worker.l  = dwNew;
    worker1.f = pDc->dclevel.laPath.eMiterLimit;
    pDc->dclevel.laPath.eMiterLimit = worker.f;
 
    if (pdwOut)
    {
        _SEH2_TRY
        {
            ProbeForWrite(pdwOut, sizeof(DWORD), 1);
            *pdwOut = worker1.l;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            SetLastNtError(_SEH2_GetExceptionCode());
            bResult = FALSE;
        }
        _SEH2_END;
    }
 
    DC_UnlockDc(pDc);
    return bResult;
}

NtGdiStrokeAndFillPath()

BOOL APIENTRY NtGdiStrokeAndFillPath

(

HDC

hDC

)

Definition at line 2985 of file path.c.

{
    DC *pDc;
    PDC_ATTR pdcattr;
    PPATH pPath, pNewPath;
    BOOL bRet = FALSE;
 
    TRACE("Enter %s\n", __FUNCTION__);
 
    if (!(pDc = DC_LockDc(hDC)))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
    pPath = PATH_LockPath(pDc->dclevel.hPath);
    if (!pPath)
    {
        DC_UnlockDc(pDc);
        return FALSE;
    }
 
    DC_vPrepareDCsForBlit(pDc, NULL, NULL, NULL);
 
    pdcattr = pDc->pdcattr;
 
    if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
        DC_vUpdateFillBrush(pDc);
 
    if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(pDc);
 
    pNewPath = PATH_FlattenPath(pPath);
 
    if (pNewPath->state != PATH_Closed)
    {
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
    }
    else if (pNewPath->numEntriesUsed)
    {
       bRet = PATH_FillPath(pDc, pNewPath);
       if (bRet) bRet = PATH_StrokePath(pDc, pNewPath);
    }
    else bRet = TRUE;
 
    PATH_UnlockPath(pNewPath);
    PATH_Delete(pNewPath->BaseObject.hHmgr);
 
    PATH_UnlockPath(pPath);
    PATH_Delete(pPath->BaseObject.hHmgr);
    pDc->dclevel.hPath = 0;
    pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
    DC_vFinishBlit(pDc, NULL);
    DC_UnlockDc(pDc);
    return bRet;
}

NtGdiStrokePath()

BOOL APIENTRY NtGdiStrokePath

(

HDC

hDC

)

Definition at line 3044 of file path.c.

{
    DC *pDc;
    PDC_ATTR pdcattr;
    PPATH pPath, pNewPath;
    BOOL bRet = FALSE;
 
    TRACE("Enter %s\n", __FUNCTION__);
 
    if (!(pDc = DC_LockDc(hDC)))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    pPath = PATH_LockPath(pDc->dclevel.hPath);
    if (!pPath)
    {
        DC_UnlockDc(pDc);
        return FALSE;
    }
 
    DC_vPrepareDCsForBlit(pDc, NULL, NULL, NULL);
 
    pdcattr = pDc->pdcattr;
 
    if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
        DC_vUpdateLineBrush(pDc);
 
    pNewPath = PATH_FlattenPath(pPath);
 
    if (pNewPath->state != PATH_Closed)
    {
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
    }
    else bRet = PATH_StrokePath(pDc, pNewPath);
 
    PATH_UnlockPath(pNewPath);
    PATH_Delete(pNewPath->BaseObject.hHmgr);
 
    DC_vFinishBlit(pDc, NULL);
 
    PATH_UnlockPath(pPath);
    PATH_Delete(pPath->BaseObject.hHmgr);
    pDc->dclevel.hPath = 0;
    pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
 
    DC_UnlockDc(pDc);
    return bRet;
}

NtGdiWidenPath()

BOOL APIENTRY NtGdiWidenPath

(

HDC

hDC

)

Definition at line 3097 of file path.c.

{
    PPATH pPath;
    BOOL Ret = FALSE;
    PDC pdc = DC_LockDc(hDC);
    TRACE("NtGdiWidenPat Enter\n");
    if (!pdc)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    pPath = PATH_WidenPath(pdc);
    if (pPath)
    {
       TRACE("WindenPath New Path\n");
       PATH_Delete(pdc->dclevel.hPath);
       pdc->dclevel.hPath = pPath->BaseObject.hHmgr;
       Ret = TRUE;
    }
    DC_UnlockDc(pdc);
    TRACE("NtGdiWidenPat Ret %d\n",Ret);
    return Ret;
}

PATH_add_outline()

static BOOL FASTCALL PATH_add_outline ( PDC  dc, PPATH  pPath, INT  x, INT  y, TTPOLYGONHEADER *  header, DWORD  size  )

static

Definition at line 2273 of file path.c.

{
    TTPOLYGONHEADER *start;
    POINT pt;
    BOOL bResult = FALSE;
 
    start = header;
 
    while ((char *)header < (char *)start + size)
    {
        TTPOLYCURVE *curve;
 
        if (header->dwType != TT_POLYGON_TYPE)
        {
            ERR("Unknown header type %lu\n", header->dwType);
            goto cleanup;
        }
 
        pt.x = x + int_from_fixed(header->pfxStart.x);
        pt.y = y - int_from_fixed(header->pfxStart.y);
        PATH_AddEntry(pPath, &pt, PT_MOVETO);
 
        curve = (TTPOLYCURVE *)(header + 1);
 
        while ((char *)curve < (char *)header + header->cb)
        {
            TRACE("curve->wType %d\n", curve->wType);
 
            switch(curve->wType)
            {
                case TT_PRIM_LINE:
                {
                    WORD i;
 
                    for (i = 0; i < curve->cpfx; i++)
                    {
                        pt.x = x + int_from_fixed(curve->apfx[i].x);
                        pt.y = y - int_from_fixed(curve->apfx[i].y);
                        PATH_AddEntry(pPath, &pt, PT_LINETO);
                    }
                    break;
                }
 
                case TT_PRIM_QSPLINE:
                case TT_PRIM_CSPLINE:
                {
                    WORD i;
                    POINTFX ptfx;
                    POINT *pts = ExAllocatePoolWithTag(PagedPool, (curve->cpfx + 1) * sizeof(POINT), TAG_PATH);
 
                    if (!pts) goto cleanup;
 
                    ptfx = *(POINTFX *)((char *)curve - sizeof(POINTFX));
 
                    pts[0].x = x + int_from_fixed(ptfx.x);
                    pts[0].y = y - int_from_fixed(ptfx.y);
 
                    for (i = 0; i < curve->cpfx; i++)
                    {
                        pts[i + 1].x = x + int_from_fixed(curve->apfx[i].x);
                        pts[i + 1].y = y - int_from_fixed(curve->apfx[i].y);
                    }
 
                    PATH_BezierTo(pPath, pts, curve->cpfx + 1);
 
                    ExFreePoolWithTag(pts, TAG_PATH);
                    break;
                }
 
                default:
                    ERR("Unknown curve type %04x\n", curve->wType);
                    goto cleanup;
            }
 
            curve = (TTPOLYCURVE *)&curve->apfx[curve->cpfx];
        }
        header = (TTPOLYGONHEADER *)((char *)header + header->cb);
    }
 
    bResult = TRUE;
 
cleanup:
    IntGdiCloseFigure(pPath);
    return bResult;
}

Referenced by PATH_ExtTextOut().

PATH_AddEntry()

BOOL FASTCALL PATH_AddEntry	(	PPATH	pPath,
		const POINT *	pPoint,
		BYTE	flags
	)

Definition at line 262 of file path.c.

{
    ASSERT(pPath != NULL);
 
    /* FIXME: If newStroke is true, perhaps we want to check that we're
     * getting a PT_MOVETO
     */
    TRACE("(%d,%d) - %d\n", pPoint->x, pPoint->y, flags);
 
    /* Reserve enough memory for an extra path entry */
    if (!PATH_ReserveEntries(pPath, pPath->numEntriesUsed + 1))
        return FALSE;
 
    /* Store information in path entry */
    pPath->pPoints[pPath->numEntriesUsed] = *pPoint;
    pPath->pFlags[pPath->numEntriesUsed] = flags;
 
    /* Increment entry count */
    pPath->numEntriesUsed++;
 
    return TRUE;
}

Referenced by IntGdiWidenPath(), PATH_add_outline(), PATH_AddFlatBezier(), PATH_Arc(), PATH_BezierTo(), PATH_FlattenPath(), PATH_LineTo(), and PATH_PolyPolyline().

PATH_AddFlatBezier()

BOOL FASTCALL PATH_AddFlatBezier	(	PPATH	pPath,
		POINT *	pt,
		BOOL	closed
	)

Definition at line 1391 of file path.c.

{
    POINT *pts;
    BOOL ret = FALSE;
    INT no, i;
 
    pts = GDI_Bezier(pt, 4, &no);
    if (!pts) return FALSE;
 
    for (i = 1; i < no; i++)
    {
        if (!(ret = PATH_AddEntry(pPath, &pts[i],  (i == no - 1 && closed) ? PT_LINETO | PT_CLOSEFIGURE : PT_LINETO)))
           break;
    }
 
    ExFreePoolWithTag(pts, TAG_BEZIER);
    return ret;
}

Referenced by PATH_FlattenPath().

PATH_Arc()

BOOL FASTCALL PATH_Arc	(	PDC	dc,
		INT	x1,
		INT	y1,
		INT	x2,
		INT	y2,
		INT	xStart,
		INT	yStart,
		INT	xEnd,
		INT	yEnd,
		INT	direction,
		INT	lines
	)

Definition at line 965 of file path.c.

{
    double  angleStart, angleEnd, angleStartQuadrant, angleEndQuadrant = 0.0;
    /* Initialize angleEndQuadrant to silence gcc's warning */
    FLOATL  x, y;
    POINT corners[2], pointStart, pointEnd;
    POINT   centre, pointCurPos;
    BOOL    start, end, Ret = TRUE;
    INT     temp;
    BOOL    clockwise;
    PPATH   pPath;
 
    /* FIXME: This function should check for all possible error returns */
    /* FIXME: Do we have to respect newStroke? */
 
    ASSERT(dc);
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    if (direction)
       clockwise = ((direction == AD_CLOCKWISE) !=0 );
    else
       clockwise = ((dc->dclevel.flPath & DCPATH_CLOCKWISE) != 0);
 
    /* Check for zero height / width */
    /* FIXME: Only in GM_COMPATIBLE? */
    if (x1 == x2 || y1 == y2)
    {
        Ret = TRUE;
        goto ArcExit;
    }
    /* Convert points to device coordinates */
    corners[0].x = x1; corners[0].y = y1;
    corners[1].x = x2; corners[1].y = y2;
    pointStart.x = xStart; pointStart.y = yStart;
    pointEnd.x = xEnd; pointEnd.y = yEnd;
    INTERNAL_LPTODP(dc, corners, 2);
    INTERNAL_LPTODP(dc, &pointStart, 1);
    INTERNAL_LPTODP(dc, &pointEnd, 1);
 
    /* Make sure first corner is top left and second corner is bottom right */
    if (corners[0].x > corners[1].x)
    {
        temp = corners[0].x;
        corners[0].x = corners[1].x;
        corners[1].x = temp;
    }
    if (corners[0].y > corners[1].y)
    {
        temp = corners[0].y;
        corners[0].y = corners[1].y;
        corners[1].y = temp;
    }
 
    /* Compute start and end angle */
    PATH_NormalizePoint(corners, &pointStart, &x, &y);
    angleStart = atan2(*(FLOAT*)&y, *(FLOAT*)&x);
    PATH_NormalizePoint(corners, &pointEnd, &x, &y);
    angleEnd = atan2(*(FLOAT*)&y, *(FLOAT*)&x);
 
    /* Make sure the end angle is "on the right side" of the start angle */
    if (clockwise)
    {
        if (angleEnd <= angleStart)
        {
            angleEnd += 2 * M_PI;
            ASSERT(angleEnd >= angleStart);
        }
    }
    else
    {
        if (angleEnd >= angleStart)
        {
            angleEnd -= 2 * M_PI;
            ASSERT(angleEnd <= angleStart);
        }
    }
 
    /* In GM_COMPATIBLE, don't include bottom and right edges */
    if (dc->pdcattr->iGraphicsMode == GM_COMPATIBLE)
    {
        corners[1].x--;
        corners[1].y--;
    }
 
    /* arcto: Add a PT_MOVETO only if this is the first entry in a stroke */
    if (lines == GdiTypeArcTo && pPath->newStroke) // -1
    {
        pPath->newStroke = FALSE;
        IntGetCurrentPositionEx(dc, &pointCurPos);
        CoordLPtoDP(dc, &pointCurPos);
        if (!PATH_AddEntry(pPath, &pointCurPos, PT_MOVETO))
        {
            Ret = FALSE;
            goto ArcExit;
        }
    }
 
    /* Add the arc to the path with one Bezier spline per quadrant that the
     * arc spans */
    start = TRUE;
    end = FALSE;
    do
    {
        /* Determine the start and end angles for this quadrant */
        if (start)
        {
            angleStartQuadrant = angleStart;
            if (clockwise)
                angleEndQuadrant = (floor(angleStart / M_PI_2) + 1.0) * M_PI_2;
            else
                angleEndQuadrant = (ceil(angleStart / M_PI_2) - 1.0) * M_PI_2;
        }
        else
        {
            angleStartQuadrant = angleEndQuadrant;
            if (clockwise)
                angleEndQuadrant += M_PI_2;
            else
                angleEndQuadrant -= M_PI_2;
        }
 
        /* Have we reached the last part of the arc? */
        if ((clockwise && angleEnd < angleEndQuadrant) ||
            (!clockwise && angleEnd > angleEndQuadrant))
        {
            /* Adjust the end angle for this quadrant */
            angleEndQuadrant = angleEnd;
            end = TRUE;
        }
 
        /* Add the Bezier spline to the path */
        PATH_DoArcPart(pPath,
                       corners,
                       angleStartQuadrant,
                       angleEndQuadrant,
                       start ? (lines == GdiTypeArcTo ? PT_LINETO : PT_MOVETO) : FALSE); // -1
        start = FALSE;
    }
    while (!end);
 
    if (lines == GdiTypeArcTo)
    {
       update_current_pos( pPath );
    }
    else /* chord: close figure. pie: add line and close figure */
    if (lines == GdiTypeChord) // 1
    {
        IntGdiCloseFigure(pPath);
    }
    else if (lines == GdiTypePie) // 2
    {
        centre.x = (corners[0].x + corners[1].x) / 2;
        centre.y = (corners[0].y + corners[1].y) / 2;
        if (!PATH_AddEntry(pPath, &centre, PT_LINETO | PT_CLOSEFIGURE))
            Ret = FALSE;
    }
ArcExit:
    PATH_UnlockPath(pPath);
    return Ret;
}

Referenced by IntGdiArcInternal().

PATH_AssignGdiPath()

BOOL FASTCALL PATH_AssignGdiPath	(	PPATH	pPathDest,
		const PPATH	pPathSrc
	)

Definition at line 166 of file path.c.

{
    ASSERT(pPathDest != NULL && pPathSrc != NULL);
 
    /* Make sure destination arrays are big enough */
    if (!PATH_ReserveEntries(pPathDest, pPathSrc->numEntriesUsed))
        return FALSE;
 
    /* Perform the copy operation */
    memcpy(pPathDest->pPoints, pPathSrc->pPoints, sizeof(POINT)*pPathSrc->numEntriesUsed);
    memcpy(pPathDest->pFlags,  pPathSrc->pFlags,  sizeof(BYTE)*pPathSrc->numEntriesUsed);
 
    pPathDest->pos = pPathSrc->pos;
    pPathDest->state = pPathSrc->state;
    pPathDest->numEntriesUsed = pPathSrc->numEntriesUsed;
    pPathDest->newStroke = pPathSrc->newStroke;
    return TRUE;
}

Referenced by PATH_RestorePath(), and PATH_SavePath().

PATH_BezierTo()

static VOID FASTCALL PATH_BezierTo ( PPATH  pPath, POINT *  lppt, INT  n  )

static

Definition at line 2229 of file path.c.

{
    if (n < 2) return;
 
    if (n == 2)
    {
        PATH_AddEntry(pPath, &lppt[1], PT_LINETO);
    }
    else if (n == 3)
    {
        add_points( pPath, lppt, 3, PT_BEZIERTO );
    }
    else
    {
        POINT pt[3];
        INT i = 0;
 
        pt[2] = lppt[0];
        n--;
 
        while (n > 2)
        {
            pt[0] = pt[2];
            pt[1] = lppt[i + 1];
            pt[2].x = (lppt[i + 2].x + lppt[i + 1].x) / 2;
            pt[2].y = (lppt[i + 2].y + lppt[i + 1].y) / 2;
            add_points( pPath, pt, 3, PT_BEZIERTO );
            n--;
            i++;
        }
 
        pt[0] = pt[2];
        pt[1] = lppt[i + 1];
        pt[2] = lppt[i + 2];
        add_points( pPath, pt, 3, PT_BEZIERTO );
    }
}

Referenced by PATH_add_outline().

PATH_CheckRect()

static BOOL PATH_CheckRect ( DC *  dc, RECTL *  rect, INT  x1, INT  y1, INT  x2, INT  y2  )

static

Definition at line 433 of file path.c.

{
    PDC_ATTR pdcattr = dc->pdcattr;
 
    /* Convert points to device coordinates */
    RECTL_vSetRect(rect, x1, y1, x2, y2);
    IntLPtoDP(dc, (PPOINT)rect, 2);
 
    /* Make sure first corner is top left and second corner is bottom right */
    RECTL_vMakeWellOrdered(rect);
 
    /* In GM_COMPATIBLE, don't include bottom and right edges */
    if (pdcattr->iGraphicsMode == GM_COMPATIBLE)
    {
        if (rect->left == rect->right) return FALSE;
        if (rect->top == rect->bottom) return FALSE;
        rect->right--;
        rect->bottom--;
    }
    return TRUE;
}

Referenced by PATH_Ellipse(), PATH_Rectangle(), and PATH_RoundRect().

PATH_CreatePath()

PPATH FASTCALL PATH_CreatePath

(

int

count

)

Definition at line 35 of file path.c.

{
    PPATH pPath = PATH_AllocPathWithHandle();
 
    if (!pPath)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return NULL;
    }
 
    TRACE("CreatePath p 0x%p\n", pPath);
    // Path handles are shared. Also due to recursion with in the same thread.
    GDIOBJ_vUnlockObject((POBJ)pPath);       // Unlock
    pPath = PATH_LockPath(pPath->BaseObject.hHmgr); // Share Lock.
 
    /* Make sure that path is empty */
    PATH_EmptyPath(pPath);
 
    count = max( NUM_ENTRIES_INITIAL, count );
 
    pPath->numEntriesAllocated = count;
 
    pPath->pPoints = (POINT *)ExAllocatePoolWithTag(PagedPool, count * sizeof(POINT), TAG_PATH);
    RtlZeroMemory( pPath->pPoints, count * sizeof(POINT));
    pPath->pFlags  =  (BYTE *)ExAllocatePoolWithTag(PagedPool, count * sizeof(BYTE),  TAG_PATH);
    RtlZeroMemory( pPath->pFlags, count * sizeof(BYTE));
 
    /* Initialize variables for new path */
    pPath->numEntriesUsed = 0;
    pPath->newStroke = TRUE;
    pPath->state     = PATH_Open;
    pPath->pos.x = pPath->pos.y = 0;
#if DBG
    PathCount++;
    TRACE("Create Path %d\n",PathCount);
#endif
    return pPath;
}

Referenced by IntGdiLineTo(), IntGdiPolygon(), IntGdiPolyline(), IntGdiWidenPath(), IntRectangle(), NtGdiBeginPath(), PATH_FlattenPath(), PATH_RestorePath(), and PATH_SavePath().

PATH_Delete()

BOOL FASTCALL PATH_Delete

(

HPATH

hPath

)

Definition at line 90 of file path.c.

{
    PPATH pPath;
    if (!hPath) return FALSE;
    pPath = PATH_LockPath(hPath);
    if (!pPath) return FALSE;
    PATH_DestroyGdiPath(pPath);
    GDIOBJ_vDeleteObject(&pPath->BaseObject);
#if DBG
    PathCount--;
    TRACE("Delete Path %d\n",PathCount);
#endif
    return TRUE;
}

Referenced by DC_vCleanup(), IntGdiCleanDC(), IntGdiLineTo(), IntGdiPolygon(), IntGdiPolyline(), IntGdiWidenPath(), IntRectangle(), NtGdiAbortPath(), NtGdiBeginPath(), NtGdiFillPath(), NtGdiFlattenPath(), NtGdiPathToRegion(), NtGdiSelectClipPath(), NtGdiStrokeAndFillPath(), NtGdiStrokePath(), NtGdiWidenPath(), PATH_FlattenPath(), and PATH_StrokePath().

PATH_DestroyGdiPath()

VOID FASTCALL PATH_DestroyGdiPath

(

PPATH

pPath

)

Definition at line 80 of file path.c.

{
    ASSERT(pPath != NULL);
 
    if (pPath->pPoints) ExFreePoolWithTag(pPath->pPoints, TAG_PATH);
    if (pPath->pFlags) ExFreePoolWithTag(pPath->pFlags, TAG_PATH);
}

Referenced by IntGdiWidenPath(), and PATH_Delete().

PATH_DoArcPart()

static BOOL PATH_DoArcPart ( PPATH  pPath, POINT  corners[], double  angleStart, double  angleEnd, BYTE  startEntryType  )

static

Definition at line 900 of file path.c.

{
    double  halfAngle, a;
    float  xNorm[4], yNorm[4];
    POINT points[4];
    BYTE *type;
    int i, start;
 
    ASSERT(fabs(angleEnd - angleStart) <= M_PI_2);
 
    /* FIXME: Is there an easier way of computing this? */
 
    /* Compute control points */
    halfAngle = (angleEnd - angleStart) / 2.0;
    if (fabs(halfAngle) > 1e-8)
    {
        a = 4.0 / 3.0 * (1 - cos(halfAngle)) / sin(halfAngle);
        xNorm[0] = cos(angleStart);
        yNorm[0] = sin(angleStart);
        xNorm[1] = xNorm[0] - a * yNorm[0];
        yNorm[1] = yNorm[0] + a * xNorm[0];
        xNorm[3] = cos(angleEnd);
        yNorm[3] = sin(angleEnd);
        xNorm[2] = xNorm[3] + a * yNorm[3];
        yNorm[2] = yNorm[3] - a * xNorm[3];
    }
    else
        for (i = 0; i < 4; i++)
        {
            xNorm[i] = cos(angleStart);
            yNorm[i] = sin(angleStart);
        }
 
    /* Add starting point to path if desired */
    start = !startEntryType;
 
    /* Add remaining control points */
    for (i = start; i < 4; i++)
    {
        if (!PATH_ScaleNormalizedPoint(corners, *(FLOATL*)&xNorm[i], *(FLOATL*)&yNorm[i], &points[i]))
            return FALSE;
    }
    if (!(type = add_points( pPath, points + start, 4 - start, PT_BEZIERTO ))) return FALSE;
    if (!start) type[0] = startEntryType;
 
    return TRUE;
}

Referenced by IntGdiWidenPath(), and PATH_Arc().

PATH_Ellipse()

BOOL PATH_Ellipse	(	PDC	dc,
		INT	x1,
		INT	y1,
		INT	x2,
		INT	y2
	)

Definition at line 792 of file path.c.

{
    PPATH pPath;
    POINT points[13];
    RECTL rect;
    BYTE *type;
    LONG xRadius, yRadius, xOffset, yOffset;
    POINT left, top, right, bottom;
 
    TRACE("PATH_Ellipse: %p -> (%d, %d) - (%d, %d)\n",
            dc, x1, y1, x2, y2);
 
    if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
    {
        return TRUE;
    }
 
    xRadius = RECTL_lGetWidth(&rect) / 2;
    yRadius = RECTL_lGetHeight(&rect) / 2;
 
    /* Get the four points which box our ellipse */
    left.x = rect.left; left.y = rect.top + yRadius;
    top.x = rect.left + xRadius; top.y = rect.top;
    right.x = rect.right; right.y = rect.bottom - yRadius;
    bottom.x = rect.right - xRadius; bottom.y = rect.bottom;
 
    /*
     * See here to understand what's happening
     * https://stackoverflow.com/questions/1734745/how-to-create-circle-with-b%C3%A9zier-curves
     */
    xOffset = EngMulDiv(RECTL_lGetWidth(&rect), 55428475, 200000000); /* w * 0.55428475 / 2 */
    yOffset = EngMulDiv(RECTL_lGetHeight(&rect), 55428475, 200000000); /* h * 0.55428475 / 2 */
    TRACE("xOffset %d, yOffset %d, Rect WxH: %dx%d.\n",
        xOffset, yOffset, RECTL_lGetWidth(&rect), RECTL_lGetHeight(&rect));
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
        return FALSE;
 
    /* Starting point: Right */
    points[0] = right;
 
    /* first curve - going up, left */
    points[1] = right;
    points[1].y -= yOffset;
    points[2] = top;
    points[2].x += xOffset;
 
    /* top */
    points[3] = top;
 
    /* second curve - going left, down*/
    points[4] = top;
    points[4].x -= xOffset;
    points[5] = left;
    points[5].y -= yOffset;
 
    /* Left */
    points[6] = left;
 
    /* Third curve - going down, right */
    points[7] = left;
    points[7].y += yOffset;
    points[8] = bottom;
    points[8].x -= xOffset;
 
    /* bottom */
    points[9] = bottom;
 
    /* Fourth curve - Going right, up */
    points[10] = bottom;
    points[10].x += xOffset;
    points[11] = right;
    points[11].y += yOffset;
 
    /* Back to starting point */
    points[12] = right;
 
    if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points( points, 13 );
    if (!(type = add_points( pPath, points, 13, PT_BEZIERTO )))
    {
        ERR("PATH_Ellipse No add\n");
        PATH_UnlockPath(pPath);
        return FALSE;
    }
    type[0] = PT_MOVETO;
 
    IntGdiCloseFigure(pPath);
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by NtGdiEllipse().

PATH_EmptyPath()

VOID FASTCALL PATH_EmptyPath

(

PPATH

pPath

)

Definition at line 246 of file path.c.

{
    ASSERT(pPath != NULL);
 
    pPath->state = PATH_Null;
    pPath->numEntriesUsed = 0;
}

Referenced by PATH_CreatePath().

PATH_ExtTextOut()

BOOL FASTCALL PATH_ExtTextOut	(	PDC	dc,
		INT	x,
		INT	y,
		UINT	flags,
		const RECTL *	lprc,
		LPCWSTR	str,
		UINT	count,
		const INT *	dx
	)

Definition at line 2370 of file path.c.

{
    PPATH pPath;
    unsigned int idx, ggo_flags = GGO_NATIVE;
    POINT offset = {0, 0};
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
    {
        return FALSE;
    }
 
    if (pPath->state != PATH_Open)
    {
        ERR("PATH_ExtTextOut not open\n");
        return FALSE;
    }
 
    if (!count) return TRUE;
    if (flags & ETO_GLYPH_INDEX) ggo_flags |= GGO_GLYPH_INDEX;
 
    for (idx = 0; idx < count; idx++)
    {
        MAT2 identity = { {0, 1}, {0, 0}, {0, 0}, {0, 1} };
        GLYPHMETRICS gm;
        DWORD dwSize;
        void *outline;
 
        dwSize = ftGdiGetGlyphOutline(dc,
                                      str[idx],
                                      ggo_flags,
                                      &gm,
                                      0,
                                      NULL,
                                      &identity,
                                      TRUE);
        if (dwSize == GDI_ERROR)
        {
           // With default DC font,,, bitmap font?
           // ExtTextOut on a path with bitmap font selected shouldn't fail.
           // This just leads to empty path generated.
           // Ref : test_emf_ExtTextOut_on_path
           continue;
        }
 
        /* Add outline only if char is printable */
        if (dwSize)
        {
            outline = ExAllocatePoolWithTag(PagedPool, dwSize, TAG_PATH);
            if (!outline)
            {
               PATH_UnlockPath(pPath);
               return FALSE;
            }
 
            ftGdiGetGlyphOutline(dc,
                                 str[idx],
                                 ggo_flags,
                                 &gm,
                                 dwSize,
                                 outline,
                                 &identity,
                                 TRUE);
 
            PATH_add_outline(dc, pPath, x + offset.x, y + offset.y, outline, dwSize);
 
            ExFreePoolWithTag(outline, TAG_PATH);
        }
 
        if (dx)
        {
            if (flags & ETO_PDY)
            {
                offset.x += dx[idx * 2];
                offset.y += dx[idx * 2 + 1];
            }
            else
                offset.x += dx[idx];
        }
        else
        {
            offset.x += gm.gmCellIncX;
            offset.y += gm.gmCellIncY;
        }
    }
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by IntExtTextOutW().

PATH_FillPath()

BOOL FASTCALL PATH_FillPath	(	PDC	dc,
		PPATH	pPath
	)

Definition at line 1518 of file path.c.

{
    return PATH_FillPathEx(dc, pPath, NULL);
}

Referenced by NtGdiFillPath(), and NtGdiStrokeAndFillPath().

PATH_FillPathEx()

BOOL FASTCALL PATH_FillPathEx	(	PDC	dc,
		PPATH	pPath,
		PBRUSH	pbrFill
	)

Definition at line 1527 of file path.c.

{
    INT   mapMode, graphicsMode;
    SIZE  ptViewportExt, ptWindowExt;
    POINTL ptViewportOrg, ptWindowOrg;
    XFORML xform;
    PREGION  Rgn;
    PDC_ATTR pdcattr = dc->pdcattr;
 
    /* Allocate a temporary region */
    Rgn = IntSysCreateRectpRgn(0, 0, 0, 0);
    if (!Rgn)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }
 
    if (!PATH_PathToRegion(pPath, pdcattr->jFillMode, Rgn))
    {
        TRACE("PFP : Fail P2R\n");
        /* EngSetLastError ? */
        REGION_Delete(Rgn);
        return FALSE;
    }
 
    /* Since PaintRgn interprets the region as being in logical coordinates
     * but the points we store for the path are already in device
     * coordinates, we have to set the mapping mode to MM_TEXT temporarily.
     * Using SaveDC to save information about the mapping mode / world
     * transform would be easier but would require more overhead, especially
     * now that SaveDC saves the current path.
     */
 
    /* Save the information about the old mapping mode */
    mapMode = pdcattr->iMapMode;
    ptViewportExt = pdcattr->szlViewportExt;
    ptViewportOrg = pdcattr->ptlViewportOrg;
    ptWindowExt   = pdcattr->szlWindowExt;
    ptWindowOrg   = pdcattr->ptlWindowOrg;
 
    /* Save world transform
     * NB: The Windows documentation on world transforms would lead one to
     * believe that this has to be done only in GM_ADVANCED; however, my
     * tests show that resetting the graphics mode to GM_COMPATIBLE does
     * not reset the world transform.
     */
    MatrixS2XForm(&xform, &dc->pdcattr->mxWorldToPage);
 
    /* Set MM_TEXT */
    IntGdiSetMapMode(dc, MM_TEXT);
    pdcattr->ptlViewportOrg.x = 0;
    pdcattr->ptlViewportOrg.y = 0;
    pdcattr->ptlWindowOrg.x = 0;
    pdcattr->ptlWindowOrg.y = 0;
 
    graphicsMode = pdcattr->iGraphicsMode;
    pdcattr->iGraphicsMode = GM_ADVANCED;
    GreModifyWorldTransform(dc, &xform, MWT_IDENTITY);
    pdcattr->iGraphicsMode =  graphicsMode;
 
    /* Paint the region */
    IntGdiFillRgn(dc, Rgn, pbrFill);
    REGION_Delete(Rgn);
    /* Restore the old mapping mode */
    IntGdiSetMapMode(dc, mapMode);
    pdcattr->szlViewportExt = ptViewportExt;
    pdcattr->ptlViewportOrg = ptViewportOrg;
    pdcattr->szlWindowExt   = ptWindowExt;
    pdcattr->ptlWindowOrg   = ptWindowOrg;
 
    /* Go to GM_ADVANCED temporarily to restore the world transform */
    graphicsMode = pdcattr->iGraphicsMode;
    pdcattr->iGraphicsMode = GM_ADVANCED;
    GreModifyWorldTransform(dc, &xform, MWT_SET);
    pdcattr->iGraphicsMode = graphicsMode;
    return TRUE;
}

Referenced by PATH_FillPath(), and PATH_StrokePath().

PATH_FlattenPath()

PPATH FASTCALL PATH_FlattenPath

(

PPATH

pPath

)

Definition at line 1420 of file path.c.

{
    PPATH newPath;
    INT srcpt;
    TRACE("PATH_FlattenPath\n");
    if (!(newPath = PATH_CreatePath(pPath->numEntriesUsed))) return NULL;
 
    for (srcpt = 0; srcpt < pPath->numEntriesUsed; srcpt++)
    {
        switch(pPath->pFlags[srcpt] & ~PT_CLOSEFIGURE)
        {
            case PT_MOVETO:
            case PT_LINETO:
                if (!PATH_AddEntry(newPath, &pPath->pPoints[srcpt], pPath->pFlags[srcpt]))
                {
                   PATH_UnlockPath(newPath);
                   PATH_Delete(newPath->BaseObject.hHmgr);
                   return NULL;
                }
                break;
            case PT_BEZIERTO:
                if(!PATH_AddFlatBezier(newPath, &pPath->pPoints[srcpt - 1], pPath->pFlags[srcpt + 2] & PT_CLOSEFIGURE))
                {
                   PATH_UnlockPath(newPath);
                   PATH_Delete(newPath->BaseObject.hHmgr);
                   return NULL;
                }
                srcpt += 2;
                break;
        }
    }
    TRACE("PATH_FlattenPath good\n");
    newPath->state = pPath->state;
    return newPath;
}

Referenced by IntGdiWidenPath(), NtGdiFillPath(), NtGdiFlattenPath(), NtGdiPathToRegion(), NtGdiSelectClipPath(), NtGdiStrokeAndFillPath(), and NtGdiStrokePath().

PATH_InitGdiPath()

VOID FASTCALL PATH_InitGdiPath

(

PPATH

pPath

)

Definition at line 142 of file path.c.

{
    ASSERT(pPath != NULL);
 
    pPath->state = PATH_Null;
    pPath->pPoints = NULL;
    pPath->pFlags = NULL;
    pPath->numEntriesUsed = 0;
    pPath->numEntriesAllocated = 0;
}

Referenced by IntGdiWidenPath().

PATH_LineTo()

BOOL FASTCALL PATH_LineTo	(	PDC	dc,
		INT	x,
		INT	y
	)

Definition at line 593 of file path.c.

{
    BOOL Ret;
    PPATH pPath;
    POINT point, pointCurPos;
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    point.x = x;
    point.y = y;
 
    // Coalesce a MoveTo point.
    if ( !PATH_MoveTo(dc, pPath) )
    {
       /* Add a PT_MOVETO if necessary */
       if (pPath->newStroke)
       {
           TRACE("Line To : New Stroke\n");
           pPath->newStroke = FALSE;
           IntGetCurrentPositionEx(dc, &pointCurPos);
           CoordLPtoDP(dc, &pointCurPos);
           if (!PATH_AddEntry(pPath, &pointCurPos, PT_MOVETO))
           {
               PATH_UnlockPath(pPath);
               return FALSE;
           }
       }
    }
    Ret = add_log_points_new_stroke(dc, pPath, &point, 1, PT_LINETO , FALSE);
    PATH_UnlockPath(pPath);
    return Ret;
}

Referenced by IntGdiLineTo(), IntGdiPolygon(), IntGdiPolyline(), and IntRectangle().

PATH_MoveTo()

BOOL FASTCALL PATH_MoveTo	(	PDC	dc,
		PPATH	pPath
	)

Definition at line 564 of file path.c.

{
    if (!pPath) return FALSE;
 
    // GDI32 : Signal from user space of a change in position.
    if (dc->pdcattr->ulDirty_ & DIRTY_STYLESTATE)
    {
       TRACE("MoveTo has changed\n");
       pPath->newStroke = TRUE;
       // Set position and clear the signal flag.
       IntGetCurrentPositionEx(dc, &pPath->pos);
       IntLPtoDP( dc, &pPath->pos, 1 );
       return TRUE;
    }
 
    return FALSE;
}

Referenced by IntGdiLineTo(), IntGdiPolygon(), IntGdiPolyline(), IntRectangle(), and PATH_LineTo().

PATH_NormalizePoint()

static VOID PATH_NormalizePoint ( POINTL  corners[], const POINTL *  pPoint, FLOATL *  pX, FLOATL *  pY  )

static

Definition at line 401 of file path.c.

{
    FLOATOBJ tmp;
 
    ASSERT(corners);
    ASSERT(pPoint);
    ASSERT(pX);
    ASSERT(pY);
 
    /* *pX = (float)(pPoint->x - corners[0].x) / (float)(corners[1].x - corners[0].x) * 2.0 - 1.0; */
    FLOATOBJ_SetLong(&tmp, (pPoint->x - corners[0].x) * 2);
    FLOATOBJ_DivLong(&tmp, corners[1].x - corners[0].x);
    FLOATOBJ_Sub(&tmp, (PFLOATOBJ)&gef1);
    *pX = FLOATOBJ_GetFloat(&tmp);
 
    /* *pY = (float)(pPoint->y - corners[0].y) / (float)(corners[1].y - corners[0].y) * 2.0 - 1.0; */
    FLOATOBJ_SetLong(&tmp, (pPoint->y - corners[0].y) * 2);
    FLOATOBJ_DivLong(&tmp, corners[1].y - corners[0].y);
    FLOATOBJ_Sub(&tmp, (PFLOATOBJ)&gef1);
    *pY = FLOATOBJ_GetFloat(&tmp);
}

Referenced by PATH_Arc().

PATH_PathToRegion()

BOOL FASTCALL PATH_PathToRegion	(	PPATH	pPath,
		INT	Mode,
		PREGION	Rgn
	)

Definition at line 1463 of file path.c.

{
    int i, pos, polygons;
    PULONG counts;
    int Ret;
 
    if (!pPath->numEntriesUsed) return FALSE;
 
    counts = ExAllocatePoolWithTag(PagedPool, (pPath->numEntriesUsed / 2) * sizeof(*counts), TAG_PATH);
    if (!counts)
    {
        ERR("Failed to allocate %lu strokes\n", (pPath->numEntriesUsed / 2) * sizeof(*counts));
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }
 
    pos = polygons = 0;
    ASSERT( pPath->pFlags[0] == PT_MOVETO );
    for (i = 1; i < pPath->numEntriesUsed; i++)
    {
        if (pPath->pFlags[i] != PT_MOVETO) continue;
        counts[polygons++] = i - pos;
        pos = i;
    }
    if (i > pos + 1) counts[polygons++] = i - pos;
 
    ASSERT( polygons <= pPath->numEntriesUsed / 2 );
 
    /* Fill the region with the strokes */
    Ret = REGION_SetPolyPolygonRgn(Rgn,
                                   pPath->pPoints,
                                   counts,
                                   polygons,
                                   Mode);
    if (!Ret)
    {
        ERR("REGION_SetPolyPolygonRgn failed\n");
    }
 
    ExFreePoolWithTag(counts, TAG_PATH);
 
    /* Success! */
    return Ret;
}

Referenced by NtGdiPathToRegion(), NtGdiSelectClipPath(), and PATH_FillPathEx().

PATH_PolyBezier()

BOOL FASTCALL PATH_PolyBezier	(	PDC	dc,
		const POINT *	pts,
		DWORD	cbPoints
	)

Definition at line 1164 of file path.c.

{
    PPATH pPath;
    BYTE *type;
 
    ASSERT(dc);
    ASSERT(pts);
    ASSERT(cbPoints);
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    type = add_log_points(dc, pPath, pts, cbPoints, PT_BEZIERTO, FALSE);
    if (!type) return FALSE;
 
    type[0] = PT_MOVETO;
 
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by IntGdiPolyBezier().

PATH_PolyBezierTo()

BOOL FASTCALL PATH_PolyBezierTo	(	PDC	dc,
		const POINT *	pts,
		DWORD	cbPoints
	)

Definition at line 1141 of file path.c.

{
    PPATH pPath;
    BOOL ret;
 
    ASSERT(dc);
    ASSERT(pts);
    ASSERT(cbPoints);
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    ret = add_log_points_new_stroke(dc, pPath, pts, cbPoints, PT_BEZIERTO , TRUE);
 
    PATH_UnlockPath(pPath);
    return ret;
}

Referenced by IntGdiPolyBezierTo().

PATH_PolyDraw()

BOOL FASTCALL PATH_PolyDraw	(	PDC	dc,
		const POINT *	pts,
		const BYTE *	types,
		DWORD	cbPoints
	)

Definition at line 1190 of file path.c.

{
    PPATH pPath;
    POINT orig_pos, cur_pos;
    ULONG i, lastmove = 0;
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    if (pPath->state != PATH_Open)
    {
        PATH_UnlockPath(pPath);
        return FALSE;
    }
 
    for (i = 0; i < pPath->numEntriesUsed; i++) if (pPath->pFlags[i] == PT_MOVETO) lastmove = i;
    orig_pos = pPath->pos;
 
    IntGetCurrentPositionEx(dc, &cur_pos);
 
    TRACE("PPD : Current pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
    TRACE("PPD : last %d pos X %d Y %d\n",lastmove, pPath->pPoints[lastmove].x, pPath->pPoints[lastmove].y);
 
 
    for(i = 0; i < cbPoints; i++)
    {
        switch (types[i])
        {
        case PT_MOVETO:
            pPath->newStroke = TRUE;
            pPath->pos = pts[i];
            IntLPtoDP( dc, &pPath->pos, 1);
            lastmove = pPath->numEntriesUsed;
            break;
        case PT_LINETO:
        case PT_LINETO | PT_CLOSEFIGURE:
            if (!add_log_points_new_stroke(dc, pPath, &pts[i], 1, PT_LINETO , FALSE))
            {
               PATH_UnlockPath(pPath);
               return FALSE;
            }
            break;
        case PT_BEZIERTO:
            if ((i + 2 < cbPoints) && (types[i + 1] == PT_BEZIERTO) &&
                (types[i + 2] & ~PT_CLOSEFIGURE) == PT_BEZIERTO)
            {
                if (!add_log_points_new_stroke(dc, pPath, &pts[i], 3, PT_BEZIERTO , FALSE))
                {
                   PATH_UnlockPath(pPath);
                   return FALSE;
                }
                i += 2;
                break;
            }
            /* fall through */
        default:
            /* restore original position */
            pPath->pos = orig_pos;
 
            TRACE("PPD Bad   : pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
 
            IntGdiMoveToEx(dc, cur_pos.x, cur_pos.y, NULL);
 
            PATH_UnlockPath(pPath);
            return FALSE;
        }
 
        if (types[i] & PT_CLOSEFIGURE)
        {
            close_figure( pPath );
            pPath->pos = pPath->pPoints[lastmove];
            TRACE("PPD close : pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
        }
    }
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by GdiPolyDraw().

PATH_PolylineTo()

BOOL FASTCALL PATH_PolylineTo	(	PDC	dc,
		const POINT *	pts,
		DWORD	cbPoints
	)

Definition at line 1274 of file path.c.

{
    PPATH pPath;
    BOOL ret;
 
    ASSERT(dc);
    ASSERT(pts);
    ASSERT(cbPoints);
 
    if (cbPoints < 1) return FALSE;
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    if (pPath->newStroke)
        cbPoints--;
 
    ret = add_log_points_new_stroke(dc, pPath, pts, cbPoints, PT_LINETO , TRUE);
    PATH_UnlockPath(pPath);
    return ret;
}

Referenced by IntGdiPolylineTo().

PATH_PolyPolygon()

BOOL FASTCALL PATH_PolyPolygon	(	PDC	dc,
		const POINT *	pts,
		const INT *	counts,
		UINT	polygons
	)

Definition at line 1301 of file path.c.

{
    UINT poly, count;
    BYTE *type;
    PPATH pPath;
 
    ASSERT(dc);
    ASSERT(pts);
    ASSERT(counts);
    ASSERT(polygons);
 
    if (!polygons) return FALSE;
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
 
    for (poly = count = 0; poly < polygons; poly++)
    {
        if (counts[poly] < 2)
        {
           PATH_UnlockPath(pPath);
           return FALSE;
        }
        count += counts[poly];
    }
 
    type = add_log_points(dc, pPath, pts, count, PT_LINETO, FALSE);
    if (!type)
    {
       PATH_UnlockPath(pPath);
       return FALSE;
    }
 
    /* make the first point of each polyline a PT_MOVETO, and close the last one */
    for (poly = 0; poly < polygons; type += counts[poly++])
    {
        type[0] = PT_MOVETO;
        type[counts[poly] - 1] = PT_LINETO | PT_CLOSEFIGURE;
    }
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by IntGdiPolyPolygon().

PATH_PolyPolyline()

BOOL FASTCALL PATH_PolyPolyline	(	PDC	dc,
		const POINT *	pts,
		const DWORD *	counts,
		DWORD	polylines
	)

Definition at line 1351 of file path.c.

{
    POINT pt;
    ULONG poly, point, i;
    PPATH pPath;
 
    ASSERT(dc);
    ASSERT(pts);
    ASSERT(counts);
    ASSERT(polylines);
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
    {
       return FALSE;
    }
 
    for (i = 0, poly = 0; poly < polylines; poly++)
    {
        for (point = 0; point < counts[poly]; point++, i++)
        {
            pt = pts[i];
            CoordLPtoDP(dc, &pt);
            PATH_AddEntry(pPath, &pt, (point == 0) ? PT_MOVETO : PT_LINETO);
        }
    }
    TRACE("PATH_PolyPolyline end count %d\n",pPath->numEntriesUsed);
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by IntGdiPolyPolyline().

PATH_Rectangle()

BOOL FASTCALL PATH_Rectangle	(	PDC	dc,
		INT	x1,
		INT	y1,
		INT	x2,
		INT	y2
	)

Definition at line 637 of file path.c.

{
    PPATH pPath;
    RECTL rect;
    POINTL points[4];
    BYTE *type;
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
    {
        PATH_UnlockPath(pPath);
        return TRUE;
    }
 
    points[0].x = rect.right; points[0].y = rect.top;
    points[1].x = rect.left; points[1].y = rect.top;
    points[2].x = rect.left; points[2].y = rect.bottom;
    points[3].x = rect.right; points[3].y = rect.bottom;
 
    if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points(points, 4 );
 
    if (!(type = add_points( pPath, points, 4, PT_LINETO )))
    {
       PATH_UnlockPath(pPath);
       return FALSE;
    }
    type[0] = PT_MOVETO;
 
    /* Close the rectangle figure */
    IntGdiCloseFigure(pPath) ;
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by IntRectangle(), and PATH_RoundRect().

PATH_ReserveEntries()

BOOL FASTCALL PATH_ReserveEntries	(	PPATH	pPath,
		INT	numEntries
	)

Definition at line 296 of file path.c.

{
    INT numEntriesToAllocate;
    POINT *pPointsNew;
    BYTE *pFlagsNew;
 
    ASSERT(pPath != NULL);
    ASSERT(numEntries >= 0);
 
    /* Do we have to allocate more memory? */
    if (numEntries > pPath->numEntriesAllocated)
    {
        /* Find number of entries to allocate. We let the size of the array
         * grow exponentially, since that will guarantee linear time
         * complexity. */
        if (pPath->numEntriesAllocated)
        {
            numEntriesToAllocate = pPath->numEntriesAllocated;
            while (numEntriesToAllocate < numEntries)
                numEntriesToAllocate = numEntriesToAllocate * GROW_FACTOR_NUMER / GROW_FACTOR_DENOM;
        }
        else
            numEntriesToAllocate = numEntries;
 
        /* Allocate new arrays */
        pPointsNew = (POINT *)ExAllocatePoolWithTag(PagedPool, numEntriesToAllocate * sizeof(POINT), TAG_PATH);
        if (!pPointsNew)
            return FALSE;
 
        pFlagsNew = (BYTE *)ExAllocatePoolWithTag(PagedPool, numEntriesToAllocate * sizeof(BYTE), TAG_PATH);
        if (!pFlagsNew)
        {
            ExFreePoolWithTag(pPointsNew, TAG_PATH);
            return FALSE;
        }
 
        /* Copy old arrays to new arrays and discard old arrays */
        if (pPath->pPoints)
        {
            ASSERT(pPath->pFlags);
 
            memcpy(pPointsNew, pPath->pPoints, sizeof(POINT)*pPath->numEntriesUsed);
            memcpy(pFlagsNew, pPath->pFlags, sizeof(BYTE)*pPath->numEntriesUsed);
 
            ExFreePoolWithTag(pPath->pPoints, TAG_PATH);
            ExFreePoolWithTag(pPath->pFlags, TAG_PATH);
        }
 
        pPath->pPoints = pPointsNew;
        pPath->pFlags = pFlagsNew;
        pPath->numEntriesAllocated = numEntriesToAllocate;
    }
 
    return TRUE;
}

Referenced by add_log_points(), add_points(), PATH_AddEntry(), and PATH_AssignGdiPath().

PATH_RestorePath()

BOOL PATH_RestorePath	(	DC *	dst,
		DC *	src
	)

Definition at line 209 of file path.c.

{
    TRACE("PATH_RestorePath\n");
 
    if (dst->dclevel.hPath == NULL)
    {
       PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
       TRACE("PATH_RestorePath 1\n");
       pdstPath = PATH_CreatePath(psrcPath->numEntriesAllocated);
       dst->dclevel.flPath = src->dclevel.flPath;
       dst->dclevel.hPath = pdstPath->BaseObject.hHmgr;
 
       PATH_AssignGdiPath(pdstPath, psrcPath);
 
       PATH_UnlockPath(pdstPath);
       PATH_UnlockPath(psrcPath);
    }
    else
    {
       PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
       pdstPath = PATH_LockPath(dst->dclevel.hPath);
       TRACE("PATH_RestorePath 2\n");
       dst->dclevel.flPath = src->dclevel.flPath & (DCPATH_CLOCKWISE|DCPATH_ACTIVE);
       PATH_AssignGdiPath(pdstPath, psrcPath);
 
       PATH_UnlockPath(pdstPath);
       PATH_UnlockPath(psrcPath);
    }
    return TRUE;
}

Referenced by DC_vRestoreDC().

PATH_RoundRect()

BOOL PATH_RoundRect	(	DC *	dc,
		INT	x1,
		INT	y1,
		INT	x2,
		INT	y2,
		INT	ell_width,
		INT	ell_height
	)

Definition at line 685 of file path.c.

{
    PPATH pPath;
    RECTL rect, ellipse;
    POINT points[16];
    BYTE *type;
    INT xOffset, yOffset;
 
    if (!ell_width || !ell_height) return PATH_Rectangle( dc, x1, y1, x2, y2 );
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath) return FALSE;
 
    if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
    {
        PATH_UnlockPath(pPath);
        return TRUE;
    }
 
    RECTL_vSetRect(&ellipse, 0, 0, ell_width, ell_height);
    IntLPtoDP( dc, (PPOINT)&ellipse, 2 );
    RECTL_vMakeWellOrdered(&ellipse);
    ell_width = min(RECTL_lGetWidth(&ellipse), RECTL_lGetWidth(&rect));
    ell_height = min(RECTL_lGetHeight(&ellipse), RECTL_lGetHeight(&rect));
 
    /*
     * See here to understand what's happening
     * https://stackoverflow.com/questions/1734745/how-to-create-circle-with-b%C3%A9zier-curves
     */
    xOffset = EngMulDiv(ell_width, 44771525, 200000000); /* w * (1 - 0.5522847) / 2 */
    yOffset = EngMulDiv(ell_height, 44771525, 200000000); /* h * (1 - 0.5522847) / 2 */
    TRACE("xOffset %d, yOffset %d, Rect WxH: %dx%d.\n",
        xOffset, yOffset, RECTL_lGetWidth(&rect), RECTL_lGetHeight(&rect));
 
    /*
     * Get half width & height.
     * Do not use integer division, we need the rounding made by EngMulDiv.
     */
    ell_width = EngMulDiv(ell_width, 1, 2);
    ell_height = EngMulDiv(ell_height, 1, 2);
 
    /* starting point */
    points[0].x  = rect.right;
    points[0].y  = rect.top + ell_height;
    /* first curve */
    points[1].x = rect.right;
    points[1].y = rect.top + yOffset;
    points[2].x = rect.right - xOffset;
    points[2].y = rect.top;
    points[3].x  = rect.right - ell_width;
    points[3].y  = rect.top;
    /* horizontal line */
    points[4].x  = rect.left + ell_width;
    points[4].y  = rect.top;
    /* second curve */
    points[5].x  = rect.left + xOffset;
    points[5].y  = rect.top;
    points[6].x  = rect.left;
    points[6].y  = rect.top + yOffset;
    points[7].x  = rect.left;
    points[7].y  = rect.top + ell_height;
    /* vertical line */
    points[8].x  = rect.left;
    points[8].y  = rect.bottom - ell_height;
    /* third curve */
    points[9].x  = rect.left;
    points[9].y  = rect.bottom - yOffset;
    points[10].x = rect.left + xOffset;
    points[10].y = rect.bottom;
    points[11].x = rect.left + ell_width;
    points[11].y = rect.bottom;
    /* horizontal line */
    points[12].x = rect.right - ell_width;
    points[12].y = rect.bottom;
    /* fourth curve */
    points[13].x = rect.right - xOffset;
    points[13].y = rect.bottom;
    points[14].x = rect.right;
    points[14].y = rect.bottom - yOffset;
    points[15].x = rect.right;
    points[15].y = rect.bottom - ell_height;
 
    if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points( points, 16 );
    if (!(type = add_points( pPath, points, 16, PT_BEZIERTO )))
    {
       PATH_UnlockPath(pPath);
       return FALSE;
    }
    type[0] = PT_MOVETO;
    type[4] = type[8] = type[12] = PT_LINETO;
 
    IntGdiCloseFigure(pPath);
    PATH_UnlockPath(pPath);
    return TRUE;
}

Referenced by IntRoundRect().

PATH_SavePath()

BOOL PATH_SavePath	(	DC *	dst,
		DC *	src
	)

Definition at line 187 of file path.c.

{
    PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
    TRACE("PATH_SavePath\n");
    if (psrcPath)
    {
       TRACE("PATH_SavePath 1\n");
 
       pdstPath = PATH_CreatePath(psrcPath->numEntriesAllocated);
 
       dst->dclevel.flPath = src->dclevel.flPath;
 
       dst->dclevel.hPath = pdstPath->BaseObject.hHmgr;
 
       PATH_AssignGdiPath(pdstPath, psrcPath);
 
       PATH_UnlockPath(pdstPath);
       PATH_UnlockPath(psrcPath);
    }
    return TRUE;
}

Referenced by NtGdiSaveDC().

PATH_ScaleNormalizedPoint()

static BOOLEAN PATH_ScaleNormalizedPoint ( POINT  corners[], FLOATL  x, FLOATL  y, POINT *  pPoint  )

static

Definition at line 363 of file path.c.

{
    FLOATOBJ tmp;
 
    ASSERT(corners);
    ASSERT(pPoint);
 
    /* pPoint->x = (double)corners[0].x + (double)(corners[1].x - corners[0].x) * 0.5 * (x + 1.0); */
    FLOATOBJ_SetFloat(&tmp, x);
    FLOATOBJ_Add(&tmp, (FLOATOBJ*)&gef1);
    FLOATOBJ_Div(&tmp, (FLOATOBJ*)&gef2);
    FLOATOBJ_MulLong(&tmp, corners[1].x - corners[0].x);
    FLOATOBJ_AddLong(&tmp, corners[0].x);
    if (!FLOATOBJ_bConvertToLong(&tmp, &pPoint->x))
        return FALSE;
 
    /* pPoint->y = (double)corners[0].y + (double)(corners[1].y - corners[0].y) * 0.5 * (y + 1.0); */
    FLOATOBJ_SetFloat(&tmp, y);
    FLOATOBJ_Add(&tmp, (FLOATOBJ*)&gef1);
    FLOATOBJ_Div(&tmp, (FLOATOBJ*)&gef2);
    FLOATOBJ_MulLong(&tmp, corners[1].y - corners[0].y);
    FLOATOBJ_AddLong(&tmp, corners[0].y);
    if (!FLOATOBJ_bConvertToLong(&tmp, &pPoint->y))
        return FALSE;
    return TRUE;
}

Referenced by PATH_DoArcPart().

PATH_StrokePath()

BOOL FASTCALL PATH_StrokePath	(	DC *	dc,
		PPATH	pPath
	)

Definition at line 1610 of file path.c.

{
    BOOL ret = FALSE;
    INT nLinePts, nAlloc, jOldFillMode, i = 0;
    POINT *pLinePts = NULL;
    POINT ptViewportOrg, ptWindowOrg;
    SIZE szViewportExt, szWindowExt;
    DWORD mapMode, graphicsMode;
    XFORM xform;
    PDC_ATTR pdcattr = dc->pdcattr;
    PBRUSH pbrLine;
    PPATH pNewPath;
 
    TRACE("Enter %s\n", __FUNCTION__);
 
    pbrLine = dc->dclevel.pbrLine;
    if (IntIsEffectiveWidePen(pbrLine))
    {
        pNewPath = PATH_WidenPathEx(dc, pPath);
        if (pNewPath)
        {
            /* Fill the path with the WINDING fill mode */
            jOldFillMode = pdcattr->jFillMode;
            pdcattr->jFillMode = WINDING;
            PATH_FillPathEx(dc, pNewPath, pbrLine);
            pdcattr->jFillMode = jOldFillMode;
 
            PATH_Delete(pNewPath->BaseObject.hHmgr);
            return TRUE;
        }
    }
 
    /* Save the mapping mode info */
    mapMode = pdcattr->iMapMode;
 
    szViewportExt = *DC_pszlViewportExt(dc);
    ptViewportOrg = dc->pdcattr->ptlViewportOrg;
    szWindowExt = dc->pdcattr->szlWindowExt;
    ptWindowOrg = dc->pdcattr->ptlWindowOrg;
 
    MatrixS2XForm(&xform, &dc->pdcattr->mxWorldToPage);
 
    /* Set MM_TEXT */
    pdcattr->iMapMode = MM_TEXT;
    pdcattr->ptlViewportOrg.x = 0;
    pdcattr->ptlViewportOrg.y = 0;
    pdcattr->ptlWindowOrg.x = 0;
    pdcattr->ptlWindowOrg.y = 0;
    graphicsMode = pdcattr->iGraphicsMode;
    pdcattr->iGraphicsMode = GM_ADVANCED;
    GreModifyWorldTransform(dc, (XFORML*)&xform, MWT_IDENTITY);
    pdcattr->iGraphicsMode = graphicsMode;
 
    /* Allocate enough memory for the worst case without beziers (one PT_MOVETO
     * and the rest PT_LINETO with PT_CLOSEFIGURE at the end) plus some buffer
     * space in case we get one to keep the number of reallocations small. */
    nAlloc = pPath->numEntriesUsed + 1 + 300;
    pLinePts = ExAllocatePoolWithTag(PagedPool, nAlloc * sizeof(POINT), TAG_PATH);
    if (!pLinePts)
    {
        ERR("Can't allocate pool!\n");
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        goto end;
    }
    nLinePts = 0;
 
    for (i = 0; i < pPath->numEntriesUsed; i++)
    {
        if ((i == 0 || (pPath->pFlags[i - 1] & PT_CLOSEFIGURE))
                && (pPath->pFlags[i] != PT_MOVETO))
        {
            ERR("Expected PT_MOVETO %s, got path flag %d\n",
                    i == 0 ? "as first point" : "after PT_CLOSEFIGURE",
                    (INT)pPath->pFlags[i]);
            goto end;
        }
 
        switch(pPath->pFlags[i])
        {
            case PT_MOVETO:
                TRACE("Got PT_MOVETO (%ld, %ld)\n",
                       pPath->pPoints[i].x, pPath->pPoints[i].y);
                if (nLinePts >= 2) IntGdiPolyline(dc, pLinePts, nLinePts);
                nLinePts = 0;
                pLinePts[nLinePts++] = pPath->pPoints[i];
                break;
            case PT_LINETO:
            case (PT_LINETO | PT_CLOSEFIGURE):
                TRACE("Got PT_LINETO (%ld, %ld)\n",
                       pPath->pPoints[i].x, pPath->pPoints[i].y);
                pLinePts[nLinePts++] = pPath->pPoints[i];
                break;
            case PT_BEZIERTO:
                TRACE("Got PT_BEZIERTO\n");
                if (pPath->pFlags[i + 1] != PT_BEZIERTO ||
                        (pPath->pFlags[i + 2] & ~PT_CLOSEFIGURE) != PT_BEZIERTO)
                {
                    ERR("Path didn't contain 3 successive PT_BEZIERTOs\n");
                    ret = FALSE;
                    goto end;
                }
                else
                {
                    INT nBzrPts, nMinAlloc;
                    POINT *pBzrPts = GDI_Bezier(&pPath->pPoints[i - 1], 4, &nBzrPts);
                    /* Make sure we have allocated enough memory for the lines of
                     * this bezier and the rest of the path, assuming we won't get
                     * another one (since we won't reallocate again then). */
                    nMinAlloc = nLinePts + (pPath->numEntriesUsed - i) + nBzrPts;
                    if (nAlloc < nMinAlloc)
                    {
                        // Reallocate memory
 
                        POINT *Realloc = NULL;
                        nAlloc = nMinAlloc * 2;
 
                        Realloc = ExAllocatePoolWithTag(PagedPool,
                                                        nAlloc * sizeof(POINT),
                                                        TAG_PATH);
 
                        if (!Realloc)
                        {
                            ERR("Can't allocate pool!\n");
                            ExFreePoolWithTag(pBzrPts, TAG_BEZIER);
                            goto end;
                        }
 
                        memcpy(Realloc, pLinePts, nLinePts * sizeof(POINT));
                        ExFreePoolWithTag(pLinePts, TAG_PATH);
                        pLinePts = Realloc;
                    }
                    memcpy(&pLinePts[nLinePts], &pBzrPts[1], (nBzrPts - 1) * sizeof(POINT));
                    nLinePts += nBzrPts - 1;
                    ExFreePoolWithTag(pBzrPts, TAG_BEZIER);
                    i += 2;
                }
                break;
            default:
                ERR("Got path flag %d (not supported)\n", (INT)pPath->pFlags[i]);
                goto end;
        }
 
        if (pPath->pFlags[i] & PT_CLOSEFIGURE)
        {
            pLinePts[nLinePts++] = pLinePts[0];
        }
    }
    if (nLinePts >= 2)
        IntGdiPolyline(dc, pLinePts, nLinePts);
 
    ret = TRUE;
 
end:
    if (pLinePts) ExFreePoolWithTag(pLinePts, TAG_PATH);
 
    /* Restore the old mapping mode */
    pdcattr->iMapMode =  mapMode;
    pdcattr->szlWindowExt.cx = szWindowExt.cx;
    pdcattr->szlWindowExt.cy = szWindowExt.cy;
    pdcattr->ptlWindowOrg.x = ptWindowOrg.x;
    pdcattr->ptlWindowOrg.y = ptWindowOrg.y;
 
    pdcattr->szlViewportExt.cx = szViewportExt.cx;
    pdcattr->szlViewportExt.cy = szViewportExt.cy;
    pdcattr->ptlViewportOrg.x = ptViewportOrg.x;
    pdcattr->ptlViewportOrg.y = ptViewportOrg.y;
 
    /* Restore the world transform */
    XForm2MatrixS(&dc->pdcattr->mxWorldToPage, &xform);
 
    /* If we've moved the current point then get its new position
       which will be in device (MM_TEXT) co-ords, convert it to
       logical co-ords and re-set it.  This basically updates
       dc->CurPosX|Y so that their values are in the correct mapping
       mode.
    */
    if (i > 0)
    {
        POINT pt;
        IntGetCurrentPositionEx(dc, &pt);
        IntDPtoLP(dc, &pt, 1);
        IntGdiMoveToEx(dc, pt.x, pt.y, NULL);
    }
    TRACE("Leave %s, ret=%d\n", __FUNCTION__, ret);
    return ret;
}

Referenced by IntGdiLineTo(), IntGdiPolygon(), IntGdiPolyline(), IntRectangle(), NtGdiStrokeAndFillPath(), and NtGdiStrokePath().

PATH_WidenPath()

static PPATH FASTCALL PATH_WidenPath ( DC *  dc )

static

Definition at line 2133 of file path.c.

{
    PPATH pPath, pNewPath;
 
    pPath = PATH_LockPath(dc->dclevel.hPath);
    if (!pPath)
    {
        EngSetLastError( ERROR_CAN_NOT_COMPLETE );
        return NULL;
    }
 
    pNewPath = PATH_WidenPathEx(dc, pPath);
    PATH_UnlockPath(pPath);
    return pNewPath;
}

Referenced by NtGdiWidenPath().

PATH_WidenPathEx()

PPATH FASTCALL PATH_WidenPathEx	(	DC *	dc,
		PPATH	pPath
	)

Definition at line 2151 of file path.c.

{
    INT size;
    UINT penWidth, penStyle;
    DWORD obj_type;
    LPEXTLOGPEN elp;
    PDC_ATTR pdcattr = dc->pdcattr;
 
    if (pPath->state != PATH_Closed)
    {
        TRACE("PWP 1\n");
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
        return NULL;
    }
 
    size = GreGetObject(pdcattr->hpen, 0, NULL);
    if (!size)
    {
        TRACE("PWP 2\n");
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
        return NULL;
    }
 
    elp = ExAllocatePoolWithTag(PagedPool, size, TAG_PATH);
    if (elp == NULL)
    {
        TRACE("PWP 3\n");
        EngSetLastError(ERROR_OUTOFMEMORY);
        return NULL;
    }
 
    GreGetObject(pdcattr->hpen, size, elp);
 
    obj_type = GDI_HANDLE_GET_TYPE(pdcattr->hpen);
    if (obj_type == GDI_OBJECT_TYPE_PEN)
    {
        penStyle = ((LOGPEN*)elp)->lopnStyle;
    }
    else if (obj_type == GDI_OBJECT_TYPE_EXTPEN)
    {
        penStyle = elp->elpPenStyle;
    }
    else
    {
        TRACE("PWP 4\n");
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
        ExFreePoolWithTag(elp, TAG_PATH);
        return NULL;
    }
 
    penWidth = elp->elpWidth;
    ExFreePoolWithTag(elp, TAG_PATH);
 
    /* The function cannot apply to cosmetic pens */
    if (obj_type == GDI_OBJECT_TYPE_EXTPEN &&
        (PS_TYPE_MASK & penStyle) == PS_COSMETIC)
    {
        TRACE("PWP 5\n");
        EngSetLastError(ERROR_CAN_NOT_COMPLETE);
        return FALSE;
    }
 
    return IntGdiWidenPath(pPath, penWidth, penStyle, dc->dclevel.laPath.eMiterLimit);
}

Referenced by PATH_StrokePath(), and PATH_WidenPath().

reverse_points()

static void reverse_points ( POINT *  points, UINT  count  )

static

Definition at line 504 of file path.c.

{
    UINT i;
    for (i = 0; i < count / 2; i++)
    {
        POINT pt = points[i];
        points[i] = points[count - i - 1];
        points[count - i - 1] = pt;
    }
}

Referenced by IntGdiWidenPath(), PATH_Ellipse(), PATH_Rectangle(), and PATH_RoundRect().

start_new_stroke()

static BOOL start_new_stroke ( PPATH  path )

static

Definition at line 516 of file path.c.

{
    if (!path->newStroke && path->numEntriesUsed &&
        !(path->pFlags[path->numEntriesUsed - 1] & PT_CLOSEFIGURE) &&
        path->pPoints[path->numEntriesUsed - 1].x == path->pos.x &&
        path->pPoints[path->numEntriesUsed - 1].y == path->pos.y)
        return TRUE;
 
    path->newStroke = FALSE;
    return add_points( path, &path->pos, 1, PT_MOVETO ) != NULL;
}

Referenced by add_log_points_new_stroke().

update_current_pos()

static void update_current_pos ( PPATH  path )

static

Definition at line 529 of file path.c.

{
    ASSERT(path->numEntriesUsed);
    path->pos = path->pPoints[path->numEntriesUsed - 1];
}

Referenced by add_log_points_new_stroke(), and PATH_Arc().