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527f2f9057
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
623 lines
16 KiB
C
623 lines
16 KiB
C
/*
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* PROJECT: ReactOS Win32k Subsystem
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: win32k/objects/line.c
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* PURPOSE: Line functions
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* PROGRAMMERS: ...
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*/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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// Some code from the WINE project source (www.winehq.com)
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// Should use Fx in Point
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//
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BOOL FASTCALL
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IntGdiMoveToEx(DC *dc,
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int X,
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int Y,
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LPPOINT Point,
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BOOL BypassPath)
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{
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BOOL PathIsOpen;
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PDC_ATTR pdcattr = dc->pdcattr;
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if ( Point )
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{
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if ( pdcattr->ulDirty_ & DIRTY_PTLCURRENT ) // Double hit!
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{
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Point->x = pdcattr->ptfxCurrent.x; // ret prev before change.
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Point->y = pdcattr->ptfxCurrent.y;
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IntDPtoLP ( dc, Point, 1); // Reconvert back.
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}
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else
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{
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Point->x = pdcattr->ptlCurrent.x;
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Point->y = pdcattr->ptlCurrent.y;
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}
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}
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pdcattr->ptlCurrent.x = X;
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pdcattr->ptlCurrent.y = Y;
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pdcattr->ptfxCurrent = pdcattr->ptlCurrent;
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CoordLPtoDP(dc, &pdcattr->ptfxCurrent); // Update fx
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pdcattr->ulDirty_ &= ~(DIRTY_PTLCURRENT|DIRTY_PTFXCURRENT|DIRTY_STYLESTATE);
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if (BypassPath) return TRUE;
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PathIsOpen = PATH_IsPathOpen(dc->dclevel);
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if ( PathIsOpen )
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return PATH_MoveTo ( dc );
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return TRUE;
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}
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BOOL FASTCALL
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GreMoveTo( HDC hdc,
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INT x,
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INT y,
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LPPOINT pptOut)
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{
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PDC dc;
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if (!(dc = DC_LockDc(hdc)))
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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return IntGdiMoveToEx(dc, x, y, pptOut, TRUE);
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}
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// Should use Fx in pt
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//
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VOID FASTCALL
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IntGetCurrentPositionEx(PDC dc, LPPOINT pt)
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{
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PDC_ATTR pdcattr = dc->pdcattr;
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if ( pt )
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{
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if (pdcattr->ulDirty_ & DIRTY_PTFXCURRENT)
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{
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pdcattr->ptfxCurrent = pdcattr->ptlCurrent;
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CoordLPtoDP(dc, &pdcattr->ptfxCurrent); // Update fx
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pdcattr->ulDirty_ &= ~(DIRTY_PTFXCURRENT|DIRTY_STYLESTATE);
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}
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pt->x = pdcattr->ptlCurrent.x;
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pt->y = pdcattr->ptlCurrent.y;
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}
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}
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BOOL FASTCALL
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IntGdiLineTo(DC *dc,
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int XEnd,
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int YEnd)
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{
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SURFACE *psurf;
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BOOL Ret = TRUE;
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PBRUSH pbrLine;
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RECTL Bounds;
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POINT Points[2];
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PDC_ATTR pdcattr = dc->pdcattr;
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if (PATH_IsPathOpen(dc->dclevel))
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{
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Ret = PATH_LineTo(dc, XEnd, YEnd);
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if (Ret)
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{
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// FIXME: PATH_LineTo should maybe do this? No
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pdcattr->ptlCurrent.x = XEnd;
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pdcattr->ptlCurrent.y = YEnd;
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pdcattr->ptfxCurrent = pdcattr->ptlCurrent;
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CoordLPtoDP(dc, &pdcattr->ptfxCurrent); // Update fx
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pdcattr->ulDirty_ &= ~(DIRTY_PTLCURRENT|DIRTY_PTFXCURRENT|DIRTY_STYLESTATE);
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}
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return Ret;
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}
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else
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{
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psurf = dc->dclevel.pSurface;
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if (NULL == psurf)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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Points[0].x = pdcattr->ptlCurrent.x;
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Points[0].y = pdcattr->ptlCurrent.y;
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Points[1].x = XEnd;
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Points[1].y = YEnd;
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IntLPtoDP(dc, Points, 2);
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/* The DCOrg is in device coordinates */
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Points[0].x += dc->ptlDCOrig.x;
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Points[0].y += dc->ptlDCOrig.y;
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Points[1].x += dc->ptlDCOrig.x;
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Points[1].y += dc->ptlDCOrig.y;
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Bounds.left = min(Points[0].x, Points[1].x);
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Bounds.top = min(Points[0].y, Points[1].y);
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Bounds.right = max(Points[0].x, Points[1].x);
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Bounds.bottom = max(Points[0].y, Points[1].y);
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/* Get BRUSH from current pen. */
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pbrLine = dc->dclevel.pbrLine;
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ASSERT(pbrLine);
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if (!(pbrLine->flAttrs & BR_IS_NULL))
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{
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Ret = IntEngLineTo(&psurf->SurfObj,
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dc->rosdc.CombinedClip,
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&dc->eboLine.BrushObject,
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Points[0].x, Points[0].y,
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Points[1].x, Points[1].y,
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&Bounds,
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ROP2_TO_MIX(pdcattr->jROP2));
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}
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}
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if (Ret)
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{
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pdcattr->ptlCurrent.x = XEnd;
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pdcattr->ptlCurrent.y = YEnd;
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pdcattr->ptfxCurrent = pdcattr->ptlCurrent;
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CoordLPtoDP(dc, &pdcattr->ptfxCurrent); // Update fx
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pdcattr->ulDirty_ &= ~(DIRTY_PTLCURRENT|DIRTY_PTFXCURRENT|DIRTY_STYLESTATE);
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}
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return Ret;
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}
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BOOL FASTCALL
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IntGdiPolyBezier(DC *dc,
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LPPOINT pt,
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DWORD Count)
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{
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BOOL ret = FALSE; // Default to FAILURE
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if ( PATH_IsPathOpen(dc->dclevel) )
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{
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return PATH_PolyBezier ( dc, pt, Count );
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}
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/* We'll convert it into line segments and draw them using Polyline */
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{
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POINT *Pts;
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INT nOut;
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Pts = GDI_Bezier ( pt, Count, &nOut );
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if ( Pts )
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{
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ret = IntGdiPolyline(dc, Pts, nOut);
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ExFreePoolWithTag(Pts, TAG_BEZIER);
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}
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}
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return ret;
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}
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BOOL FASTCALL
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IntGdiPolyBezierTo(DC *dc,
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LPPOINT pt,
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DWORD Count)
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{
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BOOL ret = FALSE; // Default to failure
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PDC_ATTR pdcattr = dc->pdcattr;
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if ( PATH_IsPathOpen(dc->dclevel) )
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ret = PATH_PolyBezierTo ( dc, pt, Count );
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else /* We'll do it using PolyBezier */
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{
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POINT *npt;
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npt = ExAllocatePoolWithTag(PagedPool,
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sizeof(POINT) * (Count + 1),
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TAG_BEZIER);
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if ( npt )
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{
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npt[0].x = pdcattr->ptlCurrent.x;
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npt[0].y = pdcattr->ptlCurrent.y;
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memcpy(npt + 1, pt, sizeof(POINT) * Count);
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ret = IntGdiPolyBezier(dc, npt, Count+1);
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ExFreePoolWithTag(npt, TAG_BEZIER);
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}
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}
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if ( ret )
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{
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pdcattr->ptlCurrent.x = pt[Count-1].x;
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pdcattr->ptlCurrent.y = pt[Count-1].y;
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pdcattr->ptfxCurrent = pdcattr->ptlCurrent;
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CoordLPtoDP(dc, &pdcattr->ptfxCurrent); // Update fx
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pdcattr->ulDirty_ &= ~(DIRTY_PTLCURRENT|DIRTY_PTFXCURRENT|DIRTY_STYLESTATE);
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}
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return ret;
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}
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BOOL FASTCALL
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IntGdiPolyline(DC *dc,
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LPPOINT pt,
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int Count)
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{
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SURFACE *psurf;
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BRUSH *pbrLine;
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LPPOINT Points;
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BOOL Ret = TRUE;
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LONG i;
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PDC_ATTR pdcattr = dc->pdcattr;
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psurf = dc->dclevel.pSurface;
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if (!psurf)
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{
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return FALSE;
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}
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if (PATH_IsPathOpen(dc->dclevel))
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return PATH_Polyline(dc, pt, Count);
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DC_vPrepareDCsForBlit(dc, dc->rosdc.CombinedClip->rclBounds,
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NULL, dc->rosdc.CombinedClip->rclBounds);
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if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
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DC_vUpdateFillBrush(dc);
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if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
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DC_vUpdateLineBrush(dc);
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/* Get BRUSHOBJ from current pen. */
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pbrLine = dc->dclevel.pbrLine;
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ASSERT(pbrLine);
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if (!(pbrLine->flAttrs & BR_IS_NULL))
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{
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Points = EngAllocMem(0, Count * sizeof(POINT), GDITAG_TEMP);
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if (Points != NULL)
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{
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RtlCopyMemory(Points, pt, Count * sizeof(POINT));
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IntLPtoDP(dc, Points, Count);
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/* Offset the array of points by the DC origin */
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for (i = 0; i < Count; i++)
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{
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Points[i].x += dc->ptlDCOrig.x;
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Points[i].y += dc->ptlDCOrig.y;
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}
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Ret = IntEngPolyline(&psurf->SurfObj,
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dc->rosdc.CombinedClip,
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&dc->eboLine.BrushObject,
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Points,
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Count,
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ROP2_TO_MIX(pdcattr->jROP2));
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EngFreeMem(Points);
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}
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else
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{
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Ret = FALSE;
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}
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}
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DC_vFinishBlit(dc, NULL);
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return Ret;
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}
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BOOL FASTCALL
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IntGdiPolylineTo(DC *dc,
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LPPOINT pt,
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DWORD Count)
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{
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BOOL ret = FALSE; // Default to failure
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PDC_ATTR pdcattr = dc->pdcattr;
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if (PATH_IsPathOpen(dc->dclevel))
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{
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ret = PATH_PolylineTo(dc, pt, Count);
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}
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else /* Do it using Polyline */
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{
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POINT *pts = ExAllocatePoolWithTag(PagedPool,
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sizeof(POINT) * (Count + 1),
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TAG_SHAPE);
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if ( pts )
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{
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pts[0].x = pdcattr->ptlCurrent.x;
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pts[0].y = pdcattr->ptlCurrent.y;
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memcpy( pts + 1, pt, sizeof(POINT) * Count);
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ret = IntGdiPolyline(dc, pts, Count + 1);
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ExFreePoolWithTag(pts, TAG_SHAPE);
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}
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}
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if ( ret )
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{
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pdcattr->ptlCurrent.x = pt[Count-1].x;
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pdcattr->ptlCurrent.y = pt[Count-1].y;
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pdcattr->ptfxCurrent = pdcattr->ptlCurrent;
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CoordLPtoDP(dc, &pdcattr->ptfxCurrent); // Update fx
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pdcattr->ulDirty_ &= ~(DIRTY_PTLCURRENT|DIRTY_PTFXCURRENT|DIRTY_STYLESTATE);
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}
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return ret;
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}
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BOOL FASTCALL
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IntGdiPolyPolyline(DC *dc,
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LPPOINT pt,
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PULONG PolyPoints,
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DWORD Count)
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{
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ULONG i;
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LPPOINT pts;
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PULONG pc;
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BOOL ret = FALSE; // Default to failure
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pts = pt;
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pc = PolyPoints;
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if (PATH_IsPathOpen(dc->dclevel))
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return PATH_PolyPolyline( dc, pt, PolyPoints, Count );
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for (i = 0; i < Count; i++)
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{
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ret = IntGdiPolyline ( dc, pts, *pc );
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if (ret == FALSE)
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{
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return ret;
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}
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pts+=*pc++;
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}
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return ret;
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}
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/******************************************************************************/
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BOOL
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APIENTRY
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NtGdiLineTo(HDC hDC,
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int XEnd,
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int YEnd)
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{
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DC *dc;
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BOOL Ret;
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RECT rcLockRect ;
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dc = DC_LockDc(hDC);
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if (!dc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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if (dc->dctype == DC_TYPE_INFO)
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{
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DC_UnlockDc(dc);
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/* Yes, Windows really returns TRUE in this case */
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return TRUE;
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}
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rcLockRect.left = dc->pdcattr->ptlCurrent.x;
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rcLockRect.top = dc->pdcattr->ptlCurrent.y;
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rcLockRect.right = XEnd;
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rcLockRect.bottom = YEnd;
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IntLPtoDP(dc, &rcLockRect, 2);
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/* The DCOrg is in device coordinates */
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rcLockRect.left += dc->ptlDCOrig.x;
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rcLockRect.top += dc->ptlDCOrig.y;
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rcLockRect.right += dc->ptlDCOrig.x;
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rcLockRect.bottom += dc->ptlDCOrig.y;
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DC_vPrepareDCsForBlit(dc, rcLockRect, NULL, rcLockRect);
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if (dc->pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
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DC_vUpdateLineBrush(dc);
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Ret = IntGdiLineTo(dc, XEnd, YEnd);
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DC_vFinishBlit(dc, NULL);
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DC_UnlockDc(dc);
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return Ret;
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}
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// FIXME: This function is completely broken
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BOOL
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APIENTRY
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NtGdiPolyDraw(
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IN HDC hdc,
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IN LPPOINT lppt,
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IN LPBYTE lpbTypes,
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IN ULONG cCount)
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{
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PDC dc;
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PDC_ATTR pdcattr;
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POINT bzr[4];
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volatile PPOINT line_pts, line_pts_old, bzr_pts;
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INT num_pts, num_bzr_pts, space, space_old, size;
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ULONG i;
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BOOL result = FALSE;
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dc = DC_LockDc(hdc);
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if (!dc) return FALSE;
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pdcattr = dc->pdcattr;
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if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
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DC_vUpdateFillBrush(dc);
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if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
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DC_vUpdateLineBrush(dc);
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if (!cCount)
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{
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DC_UnlockDc(dc);
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return TRUE;
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}
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line_pts = NULL;
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line_pts_old = NULL;
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bzr_pts = NULL;
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_SEH2_TRY
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{
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ProbeArrayForRead(lppt, sizeof(POINT), cCount, sizeof(LONG));
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ProbeArrayForRead(lpbTypes, sizeof(BYTE), cCount, sizeof(BYTE));
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if (PATH_IsPathOpen(dc->dclevel))
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{
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result = PATH_PolyDraw(dc, (const POINT *)lppt, (const BYTE *)lpbTypes, cCount);
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_SEH2_LEAVE;
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}
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/* Check for valid point types */
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for (i = 0; i < cCount; i++)
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{
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switch (lpbTypes[i])
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{
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case PT_MOVETO:
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case PT_LINETO | PT_CLOSEFIGURE:
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case PT_LINETO:
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break;
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case PT_BEZIERTO:
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if((i + 2 < cCount) && (lpbTypes[i + 1] == PT_BEZIERTO) &&
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((lpbTypes[i + 2] & ~PT_CLOSEFIGURE) == PT_BEZIERTO))
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{
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i += 2;
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break;
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}
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default:
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_SEH2_LEAVE;
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}
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}
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space = cCount + 300;
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line_pts = ExAllocatePoolWithTag(PagedPool, space * sizeof(POINT), TAG_SHAPE);
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if (line_pts == NULL)
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{
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result = FALSE;
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_SEH2_LEAVE;
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}
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num_pts = 1;
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line_pts[0].x = pdcattr->ptlCurrent.x;
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line_pts[0].y = pdcattr->ptlCurrent.y;
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for ( i = 0; i < cCount; i++ )
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{
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switch (lpbTypes[i])
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{
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case PT_MOVETO:
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if (num_pts >= 2) IntGdiPolyline( dc, line_pts, num_pts );
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num_pts = 0;
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line_pts[num_pts++] = lppt[i];
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break;
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case PT_LINETO:
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case (PT_LINETO | PT_CLOSEFIGURE):
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line_pts[num_pts++] = lppt[i];
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break;
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case PT_BEZIERTO:
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bzr[0].x = line_pts[num_pts - 1].x;
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bzr[0].y = line_pts[num_pts - 1].y;
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RtlCopyMemory( &bzr[1], &lppt[i], 3 * sizeof(POINT) );
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if ((bzr_pts = GDI_Bezier( bzr, 4, &num_bzr_pts )))
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{
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size = num_pts + (cCount - i) + num_bzr_pts;
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if (space < size)
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{
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space_old = space;
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space = size * 2;
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line_pts_old = line_pts;
|
|
line_pts = ExAllocatePoolWithTag(PagedPool, space * sizeof(POINT), TAG_SHAPE);
|
|
if (!line_pts) _SEH2_LEAVE;
|
|
RtlCopyMemory(line_pts, line_pts_old, space_old * sizeof(POINT));
|
|
ExFreePoolWithTag(line_pts_old, TAG_SHAPE);
|
|
line_pts_old = NULL;
|
|
}
|
|
RtlCopyMemory( &line_pts[num_pts], &bzr_pts[1], (num_bzr_pts - 1) * sizeof(POINT) );
|
|
num_pts += num_bzr_pts - 1;
|
|
ExFreePoolWithTag(bzr_pts, TAG_BEZIER);
|
|
bzr_pts = NULL;
|
|
}
|
|
i += 2;
|
|
break;
|
|
}
|
|
if (lpbTypes[i] & PT_CLOSEFIGURE) line_pts[num_pts++] = line_pts[0];
|
|
}
|
|
|
|
if (num_pts >= 2) IntGdiPolyline( dc, line_pts, num_pts );
|
|
IntGdiMoveToEx( dc, line_pts[num_pts - 1].x, line_pts[num_pts - 1].y, NULL, TRUE );
|
|
result = TRUE;
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
SetLastNtError(_SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
|
|
if (line_pts != NULL)
|
|
{
|
|
ExFreePoolWithTag(line_pts, TAG_SHAPE);
|
|
}
|
|
|
|
if ((line_pts_old != NULL) && (line_pts_old != line_pts))
|
|
{
|
|
ExFreePoolWithTag(line_pts_old, TAG_SHAPE);
|
|
}
|
|
|
|
if (bzr_pts != NULL)
|
|
{
|
|
ExFreePoolWithTag(bzr_pts, TAG_BEZIER);
|
|
}
|
|
|
|
DC_UnlockDc(dc);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
_Success_(return != FALSE)
|
|
BOOL
|
|
APIENTRY
|
|
NtGdiMoveTo(
|
|
IN HDC hdc,
|
|
IN INT x,
|
|
IN INT y,
|
|
OUT OPTIONAL LPPOINT pptOut)
|
|
{
|
|
PDC pdc;
|
|
BOOL Ret;
|
|
POINT Point;
|
|
|
|
pdc = DC_LockDc(hdc);
|
|
if (!pdc) return FALSE;
|
|
|
|
Ret = IntGdiMoveToEx(pdc, x, y, &Point, TRUE);
|
|
|
|
if (Ret && pptOut)
|
|
{
|
|
_SEH2_TRY
|
|
{
|
|
ProbeForWrite(pptOut, sizeof(POINT), 1);
|
|
RtlCopyMemory(pptOut, &Point, sizeof(POINT));
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
SetLastNtError(_SEH2_GetExceptionCode());
|
|
Ret = FALSE; // CHECKME: is this correct?
|
|
}
|
|
_SEH2_END;
|
|
}
|
|
|
|
DC_UnlockDc(pdc);
|
|
|
|
return Ret;
|
|
}
|
|
|
|
/* EOF */
|