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wine/graphics/painting.c
Alexandre Julliard d8a9244fc4 Added function table to GDI objects for better encapsulation. 
Removed some direct accesses to the bitmap structure.
Fixed handling of stock bitmap if selected in multiple DCs.
Some minor fixes to the DC function table.
2002-05-31 18:43:22 +00:00

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/*
* GDI drawing functions.
*
* Copyright 1993, 1994 Alexandre Julliard
* Copyright 1997 Bertho A. Stultiens
* 1999 Huw D M Davies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string.h>
#include <stdlib.h>
#include "windef.h"
#include "wingdi.h"
#include "winerror.h"
#include "gdi.h"
#include "bitmap.h"
#include "path.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(gdi);
/***********************************************************************
* LineTo (GDI.19)
*/
BOOL16 WINAPI LineTo16( HDC16 hdc, INT16 x, INT16 y )
{
return LineTo( hdc, x, y );
}
/***********************************************************************
* LineTo (GDI32.@)
*/
BOOL WINAPI LineTo( HDC hdc, INT x, INT y )
{
DC * dc = DC_GetDCUpdate( hdc );
BOOL ret;
if(!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_LineTo(dc, x, y);
else
ret = dc->funcs->pLineTo && dc->funcs->pLineTo(dc->physDev,x,y);
if(ret) {
dc->CursPosX = x;
dc->CursPosY = y;
}
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* MoveTo (GDI.20)
*/
DWORD WINAPI MoveTo16( HDC16 hdc, INT16 x, INT16 y )
{
POINT pt;
if (!MoveToEx( (HDC)hdc, x, y, &pt )) return 0;
return MAKELONG(pt.x,pt.y);
}
/***********************************************************************
* MoveToEx (GDI.483)
*/
BOOL16 WINAPI MoveToEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
{
POINT pt32;
if (!MoveToEx( (HDC)hdc, (INT)x, (INT)y, &pt32 )) return FALSE;
if (pt) CONV_POINT32TO16( &pt32, pt );
return TRUE;
}
/***********************************************************************
* MoveToEx (GDI32.@)
*/
BOOL WINAPI MoveToEx( HDC hdc, INT x, INT y, LPPOINT pt )
{
BOOL ret = TRUE;
DC * dc = DC_GetDCPtr( hdc );
if(!dc) return FALSE;
if(pt) {
pt->x = dc->CursPosX;
pt->y = dc->CursPosY;
}
dc->CursPosX = x;
dc->CursPosY = y;
if(PATH_IsPathOpen(dc->path)) ret = PATH_MoveTo(dc);
else if (dc->funcs->pMoveTo) ret = dc->funcs->pMoveTo(dc->physDev,x,y);
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* Arc (GDI.23)
*/
BOOL16 WINAPI Arc16( HDC16 hdc, INT16 left, INT16 top, INT16 right,
INT16 bottom, INT16 xstart, INT16 ystart,
INT16 xend, INT16 yend )
{
return Arc( (HDC)hdc, (INT)left, (INT)top, (INT)right,
(INT)bottom, (INT)xstart, (INT)ystart, (INT)xend,
(INT)yend );
}
/***********************************************************************
* Arc (GDI32.@)
*/
BOOL WINAPI Arc( HDC hdc, INT left, INT top, INT right,
INT bottom, INT xstart, INT ystart,
INT xend, INT yend )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if(PATH_IsPathOpen(dc->path))
ret = PATH_Arc(dc, left, top, right, bottom, xstart, ystart, xend, yend,0);
else if (dc->funcs->pArc)
ret = dc->funcs->pArc(dc->physDev,left,top,right,bottom,xstart,ystart,xend,yend);
GDI_ReleaseObj( hdc );
}
return ret;
}
/***********************************************************************
* ArcTo (GDI32.@)
*/
BOOL WINAPI ArcTo( HDC hdc,
INT left, INT top,
INT right, INT bottom,
INT xstart, INT ystart,
INT xend, INT yend )
{
BOOL result;
DC * dc = DC_GetDCUpdate( hdc );
if(!dc) return FALSE;
if(dc->funcs->pArcTo)
{
result = dc->funcs->pArcTo( dc->physDev, left, top, right, bottom,
xstart, ystart, xend, yend );
GDI_ReleaseObj( hdc );
return result;
}
GDI_ReleaseObj( hdc );
/*
* Else emulate it.
* According to the documentation, a line is drawn from the current
* position to the starting point of the arc.
*/
LineTo(hdc, xstart, ystart);
/*
* Then the arc is drawn.
*/
result = Arc(hdc, left, top, right, bottom, xstart, ystart, xend, yend);
/*
* If no error occurred, the current position is moved to the ending
* point of the arc.
*/
if (result) MoveToEx(hdc, xend, yend, NULL);
return result;
}
/***********************************************************************
* Pie (GDI.26)
*/
BOOL16 WINAPI Pie16( HDC16 hdc, INT16 left, INT16 top,
INT16 right, INT16 bottom, INT16 xstart, INT16 ystart,
INT16 xend, INT16 yend )
{
return Pie( (HDC)hdc, (INT)left, (INT)top, (INT)right,
(INT)bottom, (INT)xstart, (INT)ystart, (INT)xend,
(INT)yend );
}
/***********************************************************************
* Pie (GDI32.@)
*/
BOOL WINAPI Pie( HDC hdc, INT left, INT top,
INT right, INT bottom, INT xstart, INT ystart,
INT xend, INT yend )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_Arc(dc,left,top,right,bottom,xstart,ystart,xend,yend,2);
else if(dc->funcs->pPie)
ret = dc->funcs->pPie(dc->physDev,left,top,right,bottom,xstart,ystart,xend,yend);
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* Chord (GDI.348)
*/
BOOL16 WINAPI Chord16( HDC16 hdc, INT16 left, INT16 top,
INT16 right, INT16 bottom, INT16 xstart, INT16 ystart,
INT16 xend, INT16 yend )
{
return Chord( hdc, left, top, right, bottom, xstart, ystart, xend, yend );
}
/***********************************************************************
* Chord (GDI32.@)
*/
BOOL WINAPI Chord( HDC hdc, INT left, INT top,
INT right, INT bottom, INT xstart, INT ystart,
INT xend, INT yend )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_Arc(dc,left,top,right,bottom,xstart,ystart,xend,yend,1);
else if(dc->funcs->pChord)
ret = dc->funcs->pChord(dc->physDev,left,top,right,bottom,xstart,ystart,xend,yend);
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* Ellipse (GDI.24)
*/
BOOL16 WINAPI Ellipse16( HDC16 hdc, INT16 left, INT16 top,
INT16 right, INT16 bottom )
{
return Ellipse( hdc, left, top, right, bottom );
}
/***********************************************************************
* Ellipse (GDI32.@)
*/
BOOL WINAPI Ellipse( HDC hdc, INT left, INT top,
INT right, INT bottom )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_Ellipse(dc,left,top,right,bottom);
else if (dc->funcs->pEllipse)
ret = dc->funcs->pEllipse(dc->physDev,left,top,right,bottom);
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* Rectangle (GDI.27)
*/
BOOL16 WINAPI Rectangle16( HDC16 hdc, INT16 left, INT16 top,
INT16 right, INT16 bottom )
{
return Rectangle( hdc, left, top, right, bottom );
}
/***********************************************************************
* Rectangle (GDI32.@)
*/
BOOL WINAPI Rectangle( HDC hdc, INT left, INT top,
INT right, INT bottom )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if(PATH_IsPathOpen(dc->path))
ret = PATH_Rectangle(dc, left, top, right, bottom);
else if (dc->funcs->pRectangle)
ret = dc->funcs->pRectangle(dc->physDev,left,top,right,bottom);
GDI_ReleaseObj( hdc );
}
return ret;
}
/***********************************************************************
* RoundRect (GDI.28)
*/
BOOL16 WINAPI RoundRect16( HDC16 hdc, INT16 left, INT16 top, INT16 right,
INT16 bottom, INT16 ell_width, INT16 ell_height )
{
return RoundRect( hdc, left, top, right, bottom, ell_width, ell_height );
}
/***********************************************************************
* RoundRect (GDI32.@)
*/
BOOL WINAPI RoundRect( HDC hdc, INT left, INT top, INT right,
INT bottom, INT ell_width, INT ell_height )
{
BOOL ret = FALSE;
DC *dc = DC_GetDCUpdate( hdc );
if (dc)
{
if(PATH_IsPathOpen(dc->path))
ret = PATH_RoundRect(dc,left,top,right,bottom,ell_width,ell_height);
else if (dc->funcs->pRoundRect)
ret = dc->funcs->pRoundRect(dc->physDev,left,top,right,bottom,ell_width,ell_height);
GDI_ReleaseObj( hdc );
}
return ret;
}
/***********************************************************************
* SetPixel (GDI.31)
*/
COLORREF WINAPI SetPixel16( HDC16 hdc, INT16 x, INT16 y, COLORREF color )
{
return SetPixel( hdc, x, y, color );
}
/***********************************************************************
* SetPixel (GDI32.@)
*/
COLORREF WINAPI SetPixel( HDC hdc, INT x, INT y, COLORREF color )
{
COLORREF ret = 0;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (dc->funcs->pSetPixel) ret = dc->funcs->pSetPixel(dc->physDev,x,y,color);
GDI_ReleaseObj( hdc );
}
return ret;
}
/***********************************************************************
* SetPixelV (GDI32.@)
*/
BOOL WINAPI SetPixelV( HDC hdc, INT x, INT y, COLORREF color )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (dc->funcs->pSetPixel)
{
dc->funcs->pSetPixel(dc->physDev,x,y,color);
ret = TRUE;
}
GDI_ReleaseObj( hdc );
}
return ret;
}
/***********************************************************************
* GetPixel (GDI.83)
*/
COLORREF WINAPI GetPixel16( HDC16 hdc, INT16 x, INT16 y )
{
return GetPixel( hdc, x, y );
}
/***********************************************************************
* GetPixel (GDI32.@)
*/
COLORREF WINAPI GetPixel( HDC hdc, INT x, INT y )
{
COLORREF ret = CLR_INVALID;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
/* FIXME: should this be in the graphics driver? */
if (PtVisible( hdc, x, y ))
{
if (dc->funcs->pGetPixel) ret = dc->funcs->pGetPixel(dc->physDev,x,y);
}
GDI_ReleaseObj( hdc );
}
return ret;
}
/******************************************************************************
* ChoosePixelFormat [GDI32.@]
* Matches a pixel format to given format
*
* PARAMS
* hdc [I] Device context to search for best pixel match
* ppfd [I] Pixel format for which a match is sought
*
* RETURNS
* Success: Pixel format index closest to given format
* Failure: 0
*/
INT WINAPI ChoosePixelFormat( HDC hdc, const LPPIXELFORMATDESCRIPTOR ppfd )
{
INT ret = 0;
DC * dc = DC_GetDCPtr( hdc );
TRACE("(%08x,%p)\n",hdc,ppfd);
if (!dc) return 0;
if (!dc->funcs->pChoosePixelFormat) FIXME(" :stub\n");
else ret = dc->funcs->pChoosePixelFormat(dc->physDev,ppfd);
GDI_ReleaseObj( hdc );
return ret;
}
/******************************************************************************
* SetPixelFormat [GDI32.@]
* Sets pixel format of device context
*
* PARAMS
* hdc [I] Device context to search for best pixel match
* iPixelFormat [I] Pixel format index
* ppfd [I] Pixel format for which a match is sought
*
* RETURNS STD
*/
BOOL WINAPI SetPixelFormat( HDC hdc, INT iPixelFormat,
const PIXELFORMATDESCRIPTOR *ppfd)
{
INT bRet = FALSE;
DC * dc = DC_GetDCPtr( hdc );
TRACE("(%d,%d,%p)\n",hdc,iPixelFormat,ppfd);
if (!dc) return 0;
if (!dc->funcs->pSetPixelFormat) FIXME(" :stub\n");
else bRet = dc->funcs->pSetPixelFormat(dc->physDev,iPixelFormat,ppfd);
GDI_ReleaseObj( hdc );
return bRet;
}
/******************************************************************************
* GetPixelFormat [GDI32.@]
* Gets index of pixel format of DC
*
* PARAMETERS
* hdc [I] Device context whose pixel format index is sought
*
* RETURNS
* Success: Currently selected pixel format
* Failure: 0
*/
INT WINAPI GetPixelFormat( HDC hdc )
{
INT ret = 0;
DC * dc = DC_GetDCPtr( hdc );
TRACE("(%08x)\n",hdc);
if (!dc) return 0;
if (!dc->funcs->pGetPixelFormat) FIXME(" :stub\n");
else ret = dc->funcs->pGetPixelFormat(dc->physDev);
GDI_ReleaseObj( hdc );
return ret;
}
/******************************************************************************
* DescribePixelFormat [GDI32.@]
* Gets info about pixel format from DC
*
* PARAMS
* hdc [I] Device context
* iPixelFormat [I] Pixel format selector
* nBytes [I] Size of buffer
* ppfd [O] Pointer to structure to receive pixel format data
*
* RETURNS
* Success: Maximum pixel format index of the device context
* Failure: 0
*/
INT WINAPI DescribePixelFormat( HDC hdc, INT iPixelFormat, UINT nBytes,
LPPIXELFORMATDESCRIPTOR ppfd )
{
INT ret = 0;
DC * dc = DC_GetDCPtr( hdc );
TRACE("(%08x,%d,%d,%p): stub\n",hdc,iPixelFormat,nBytes,ppfd);
if (!dc) return 0;
if (!dc->funcs->pDescribePixelFormat)
{
FIXME(" :stub\n");
ppfd->nSize = nBytes;
ppfd->nVersion = 1;
ret = 3;
}
else ret = dc->funcs->pDescribePixelFormat(dc->physDev,iPixelFormat,nBytes,ppfd);
GDI_ReleaseObj( hdc );
return ret;
}
/******************************************************************************
* SwapBuffers [GDI32.@]
* Exchanges front and back buffers of window
*
* PARAMS
* hdc [I] Device context whose buffers get swapped
*
* RETURNS STD
*/
BOOL WINAPI SwapBuffers( HDC hdc )
{
INT bRet = FALSE;
DC * dc = DC_GetDCPtr( hdc );
TRACE("(%08x)\n",hdc);
if (!dc) return TRUE;
if (!dc->funcs->pSwapBuffers)
{
FIXME(" :stub\n");
bRet = TRUE;
}
else bRet = dc->funcs->pSwapBuffers(dc->physDev);
GDI_ReleaseObj( hdc );
return bRet;
}
/***********************************************************************
* PaintRgn (GDI.43)
*/
BOOL16 WINAPI PaintRgn16( HDC16 hdc, HRGN16 hrgn )
{
return PaintRgn( hdc, hrgn );
}
/***********************************************************************
* PaintRgn (GDI32.@)
*/
BOOL WINAPI PaintRgn( HDC hdc, HRGN hrgn )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (dc->funcs->pPaintRgn) ret = dc->funcs->pPaintRgn(dc->physDev,hrgn);
GDI_ReleaseObj( hdc );
}
return ret;
}
/***********************************************************************
* FillRgn (GDI.40)
*/
BOOL16 WINAPI FillRgn16( HDC16 hdc, HRGN16 hrgn, HBRUSH16 hbrush )
{
return FillRgn( hdc, hrgn, hbrush );
}
/***********************************************************************
* FillRgn (GDI32.@)
*/
BOOL WINAPI FillRgn( HDC hdc, HRGN hrgn, HBRUSH hbrush )
{
BOOL retval = FALSE;
HBRUSH prevBrush;
DC * dc = DC_GetDCUpdate( hdc );
if (!dc) return FALSE;
if(dc->funcs->pFillRgn)
retval = dc->funcs->pFillRgn(dc->physDev, hrgn, hbrush);
else if ((prevBrush = SelectObject( hdc, hbrush )))
{
retval = PaintRgn( hdc, hrgn );
SelectObject( hdc, prevBrush );
}
GDI_ReleaseObj( hdc );
return retval;
}
/***********************************************************************
* FrameRgn (GDI.41)
*/
BOOL16 WINAPI FrameRgn16( HDC16 hdc, HRGN16 hrgn, HBRUSH16 hbrush,
INT16 nWidth, INT16 nHeight )
{
return FrameRgn( hdc, hrgn, hbrush, nWidth, nHeight );
}
/***********************************************************************
* FrameRgn (GDI32.@)
*/
BOOL WINAPI FrameRgn( HDC hdc, HRGN hrgn, HBRUSH hbrush,
INT nWidth, INT nHeight )
{
BOOL ret = FALSE;
DC *dc = DC_GetDCUpdate( hdc );
if (!dc) return FALSE;
if(dc->funcs->pFrameRgn)
ret = dc->funcs->pFrameRgn( dc->physDev, hrgn, hbrush, nWidth, nHeight );
else
{
HRGN tmp = CreateRectRgn( 0, 0, 0, 0 );
if (tmp)
{
if (REGION_FrameRgn( tmp, hrgn, nWidth, nHeight ))
{
FillRgn( hdc, tmp, hbrush );
ret = TRUE;
}
DeleteObject( tmp );
}
}
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* InvertRgn (GDI.42)
*/
BOOL16 WINAPI InvertRgn16( HDC16 hdc, HRGN16 hrgn )
{
return InvertRgn( hdc, hrgn );
}
/***********************************************************************
* InvertRgn (GDI32.@)
*/
BOOL WINAPI InvertRgn( HDC hdc, HRGN hrgn )
{
HBRUSH prevBrush;
INT prevROP;
BOOL retval;
DC *dc = DC_GetDCUpdate( hdc );
if (!dc) return FALSE;
if(dc->funcs->pInvertRgn)
retval = dc->funcs->pInvertRgn( dc->physDev, hrgn );
else
{
prevBrush = SelectObject( hdc, GetStockObject(BLACK_BRUSH) );
prevROP = SetROP2( hdc, R2_NOT );
retval = PaintRgn( hdc, hrgn );
SelectObject( hdc, prevBrush );
SetROP2( hdc, prevROP );
}
GDI_ReleaseObj( hdc );
return retval;
}
/**********************************************************************
* Polyline (GDI.37)
*/
BOOL16 WINAPI Polyline16( HDC16 hdc, const POINT16* pt, INT16 count )
{
register int i;
BOOL16 ret;
LPPOINT pt32 = (LPPOINT)HeapAlloc( GetProcessHeap(), 0,
count*sizeof(POINT) );
if (!pt32) return FALSE;
for (i=count;i--;) CONV_POINT16TO32(&(pt[i]),&(pt32[i]));
ret = Polyline(hdc,pt32,count);
HeapFree( GetProcessHeap(), 0, pt32 );
return ret;
}
/**********************************************************************
* Polyline (GDI32.@)
*/
BOOL WINAPI Polyline( HDC hdc, const POINT* pt, INT count )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (PATH_IsPathOpen(dc->path)) ret = PATH_Polyline(dc, pt, count);
else if (dc->funcs->pPolyline) ret = dc->funcs->pPolyline(dc->physDev,pt,count);
GDI_ReleaseObj( hdc );
}
return ret;
}
/**********************************************************************
* PolylineTo (GDI32.@)
*/
BOOL WINAPI PolylineTo( HDC hdc, const POINT* pt, DWORD cCount )
{
DC * dc = DC_GetDCUpdate( hdc );
BOOL ret = FALSE;
if(!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_PolylineTo(dc, pt, cCount);
else if(dc->funcs->pPolylineTo)
ret = dc->funcs->pPolylineTo(dc->physDev, pt, cCount);
else { /* do it using Polyline */
POINT *pts = HeapAlloc( GetProcessHeap(), 0,
sizeof(POINT) * (cCount + 1) );
if (pts)
{
pts[0].x = dc->CursPosX;
pts[0].y = dc->CursPosY;
memcpy( pts + 1, pt, sizeof(POINT) * cCount );
ret = Polyline( hdc, pts, cCount + 1 );
HeapFree( GetProcessHeap(), 0, pts );
}
}
if(ret) {
dc->CursPosX = pt[cCount-1].x;
dc->CursPosY = pt[cCount-1].y;
}
GDI_ReleaseObj( hdc );
return ret;
}
/**********************************************************************
* Polygon (GDI.36)
*/
BOOL16 WINAPI Polygon16( HDC16 hdc, const POINT16* pt, INT16 count )
{
register int i;
BOOL ret;
LPPOINT pt32 = (LPPOINT)HeapAlloc( GetProcessHeap(), 0,
count*sizeof(POINT) );
if (!pt32) return FALSE;
for (i=count;i--;) CONV_POINT16TO32(&(pt[i]),&(pt32[i]));
ret = Polygon(hdc,pt32,count);
HeapFree( GetProcessHeap(), 0, pt32 );
return ret;
}
/**********************************************************************
* Polygon (GDI32.@)
*/
BOOL WINAPI Polygon( HDC hdc, const POINT* pt, INT count )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (PATH_IsPathOpen(dc->path)) ret = PATH_Polygon(dc, pt, count);
else if (dc->funcs->pPolygon) ret = dc->funcs->pPolygon(dc->physDev,pt,count);
GDI_ReleaseObj( hdc );
}
return ret;
}
/**********************************************************************
* PolyPolygon (GDI.450)
*/
BOOL16 WINAPI PolyPolygon16( HDC16 hdc, const POINT16* pt, const INT16* counts,
UINT16 polygons )
{
int i,nrpts;
LPPOINT pt32;
LPINT counts32;
BOOL16 ret;
nrpts=0;
for (i=polygons;i--;)
nrpts+=counts[i];
pt32 = (LPPOINT)HeapAlloc( GetProcessHeap(), 0, sizeof(POINT)*nrpts);
if(pt32 == NULL) return FALSE;
for (i=nrpts;i--;)
CONV_POINT16TO32(&(pt[i]),&(pt32[i]));
counts32 = (LPINT)HeapAlloc( GetProcessHeap(), 0, polygons*sizeof(INT) );
if(counts32 == NULL) {
HeapFree( GetProcessHeap(), 0, pt32 );
return FALSE;
}
for (i=polygons;i--;) counts32[i]=counts[i];
ret = PolyPolygon(hdc,pt32,counts32,polygons);
HeapFree( GetProcessHeap(), 0, counts32 );
HeapFree( GetProcessHeap(), 0, pt32 );
return ret;
}
/**********************************************************************
* PolyPolygon (GDI32.@)
*/
BOOL WINAPI PolyPolygon( HDC hdc, const POINT* pt, const INT* counts,
UINT polygons )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (PATH_IsPathOpen(dc->path)) ret = PATH_PolyPolygon(dc, pt, counts, polygons);
else if (dc->funcs->pPolyPolygon) ret = dc->funcs->pPolyPolygon(dc->physDev,pt,counts,polygons);
GDI_ReleaseObj( hdc );
}
return ret;
}
/**********************************************************************
* PolyPolyline (GDI32.@)
*/
BOOL WINAPI PolyPolyline( HDC hdc, const POINT* pt, const DWORD* counts,
DWORD polylines )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (PATH_IsPathOpen(dc->path)) ret = PATH_PolyPolyline(dc, pt, counts, polylines);
else if (dc->funcs->pPolyPolyline) ret = dc->funcs->pPolyPolyline(dc->physDev,pt,counts,polylines);
GDI_ReleaseObj( hdc );
}
return ret;
}
/**********************************************************************
* ExtFloodFill (GDI.372)
*/
BOOL16 WINAPI ExtFloodFill16( HDC16 hdc, INT16 x, INT16 y, COLORREF color,
UINT16 fillType )
{
return ExtFloodFill( hdc, x, y, color, fillType );
}
/**********************************************************************
* ExtFloodFill (GDI32.@)
*/
BOOL WINAPI ExtFloodFill( HDC hdc, INT x, INT y, COLORREF color,
UINT fillType )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if (dc)
{
if (dc->funcs->pExtFloodFill) ret = dc->funcs->pExtFloodFill(dc->physDev,x,y,color,fillType);
GDI_ReleaseObj( hdc );
}
return ret;
}
/**********************************************************************
* FloodFill (GDI.25)
*/
BOOL16 WINAPI FloodFill16( HDC16 hdc, INT16 x, INT16 y, COLORREF color )
{
return ExtFloodFill( hdc, x, y, color, FLOODFILLBORDER );
}
/**********************************************************************
* FloodFill (GDI32.@)
*/
BOOL WINAPI FloodFill( HDC hdc, INT x, INT y, COLORREF color )
{
return ExtFloodFill( hdc, x, y, color, FLOODFILLBORDER );
}
/******************************************************************************
* PolyBezier [GDI.502]
*/
BOOL16 WINAPI PolyBezier16( HDC16 hDc, const POINT16* lppt, INT16 cPoints )
{
int i;
BOOL16 ret;
LPPOINT pt32 = (LPPOINT)HeapAlloc( GetProcessHeap(), 0,
cPoints*sizeof(POINT) );
if(!pt32) return FALSE;
for (i=cPoints;i--;) CONV_POINT16TO32(&(lppt[i]),&(pt32[i]));
ret= PolyBezier(hDc, pt32, cPoints);
HeapFree( GetProcessHeap(), 0, pt32 );
return ret;
}
/******************************************************************************
* PolyBezierTo [GDI.503]
*/
BOOL16 WINAPI PolyBezierTo16( HDC16 hDc, const POINT16* lppt, INT16 cPoints )
{
int i;
BOOL16 ret;
LPPOINT pt32 = (LPPOINT)HeapAlloc( GetProcessHeap(), 0,
cPoints*sizeof(POINT) );
if(!pt32) return FALSE;
for (i=cPoints;i--;) CONV_POINT16TO32(&(lppt[i]),&(pt32[i]));
ret= PolyBezierTo(hDc, pt32, cPoints);
HeapFree( GetProcessHeap(), 0, pt32 );
return ret;
}
/******************************************************************************
* PolyBezier [GDI32.@]
* Draws one or more Bezier curves
*
* PARAMS
* hDc [I] Handle to device context
* lppt [I] Pointer to endpoints and control points
* cPoints [I] Count of endpoints and control points
*
* RETURNS STD
*/
BOOL WINAPI PolyBezier( HDC hdc, const POINT* lppt, DWORD cPoints )
{
BOOL ret = FALSE;
DC * dc = DC_GetDCUpdate( hdc );
if(!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_PolyBezier(dc, lppt, cPoints);
else if (dc->funcs->pPolyBezier)
ret = dc->funcs->pPolyBezier(dc->physDev, lppt, cPoints);
else /* We'll convert it into line segments and draw them using Polyline */
{
POINT *Pts;
INT nOut;
if ((Pts = GDI_Bezier( lppt, cPoints, &nOut )))
{
TRACE("Pts = %p, no = %d\n", Pts, nOut);
ret = Polyline( dc->hSelf, Pts, nOut );
HeapFree( GetProcessHeap(), 0, Pts );
}
}
GDI_ReleaseObj( hdc );
return ret;
}
/******************************************************************************
* PolyBezierTo [GDI32.@]
* Draws one or more Bezier curves
*
* PARAMS
* hDc [I] Handle to device context
* lppt [I] Pointer to endpoints and control points
* cPoints [I] Count of endpoints and control points
*
* RETURNS STD
*/
BOOL WINAPI PolyBezierTo( HDC hdc, const POINT* lppt, DWORD cPoints )
{
DC * dc = DC_GetDCUpdate( hdc );
BOOL ret;
if(!dc) return FALSE;
if(PATH_IsPathOpen(dc->path))
ret = PATH_PolyBezierTo(dc, lppt, cPoints);
else if(dc->funcs->pPolyBezierTo)
ret = dc->funcs->pPolyBezierTo(dc->physDev, lppt, cPoints);
else { /* We'll do it using PolyBezier */
POINT *pt;
pt = HeapAlloc( GetProcessHeap(), 0, sizeof(POINT) * (cPoints + 1) );
if(!pt) return FALSE;
pt[0].x = dc->CursPosX;
pt[0].y = dc->CursPosY;
memcpy(pt + 1, lppt, sizeof(POINT) * cPoints);
ret = PolyBezier(dc->hSelf, pt, cPoints+1);
HeapFree( GetProcessHeap(), 0, pt );
}
if(ret) {
dc->CursPosX = lppt[cPoints-1].x;
dc->CursPosY = lppt[cPoints-1].y;
}
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* AngleArc (GDI32.@)
*/
BOOL WINAPI AngleArc(HDC hdc, INT x, INT y, DWORD dwRadius, FLOAT eStartAngle, FLOAT eSweepAngle)
{
INT x1,y1,x2,y2, arcdir;
BOOL result;
DC *dc;
if( (signed int)dwRadius < 0 )
return FALSE;
dc = DC_GetDCUpdate( hdc );
if(!dc) return FALSE;
if(dc->funcs->pAngleArc)
{
result = dc->funcs->pAngleArc( dc->physDev, x, y, dwRadius, eStartAngle, eSweepAngle );
GDI_ReleaseObj( hdc );
return result;
}
GDI_ReleaseObj( hdc );
/* AngleArc always works counterclockwise */
arcdir = GetArcDirection( hdc );
SetArcDirection( hdc, AD_COUNTERCLOCKWISE );
x1 = x + cos(eStartAngle*M_PI/180) * dwRadius;
y1 = y - sin(eStartAngle*M_PI/180) * dwRadius;
x2 = x + cos((eStartAngle+eSweepAngle)*M_PI/180) * dwRadius;
y2 = x - sin((eStartAngle+eSweepAngle)*M_PI/180) * dwRadius;
LineTo( hdc, x1, y1 );
if( eSweepAngle >= 0 )
result = Arc( hdc, x-dwRadius, y-dwRadius, x+dwRadius, y+dwRadius,
x1, y1, x2, y2 );
else
result = Arc( hdc, x-dwRadius, y-dwRadius, x+dwRadius, y+dwRadius,
x2, y2, x1, y1 );
if( result ) MoveToEx( hdc, x2, y2, NULL );
SetArcDirection( hdc, arcdir );
return result;
}
/***********************************************************************
* PolyDraw (GDI32.@)
*/
BOOL WINAPI PolyDraw(HDC hdc, const POINT *lppt, const BYTE *lpbTypes,
DWORD cCount)
{
DC *dc;
BOOL result;
POINT lastmove;
int i;
dc = DC_GetDCUpdate( hdc );
if(!dc) return FALSE;
if(dc->funcs->pPolyDraw)
{
result = dc->funcs->pPolyDraw( dc->physDev, lppt, lpbTypes, cCount );
GDI_ReleaseObj( hdc );
return result;
}
GDI_ReleaseObj( hdc );
/* check for each bezierto if there are two more points */
for( i = 0; i < cCount; i++ )
if( lpbTypes[i] != PT_MOVETO &&
lpbTypes[i] & PT_BEZIERTO )
{
if( cCount < i+3 )
return FALSE;
else
i += 2;
}
/* if no moveto occurs, we will close the figure here */
lastmove.x = dc->CursPosX;
lastmove.y = dc->CursPosY;
/* now let's draw */
for( i = 0; i < cCount; i++ )
{
if( lpbTypes[i] == PT_MOVETO )
{
MoveToEx( hdc, lppt[i].x, lppt[i].y, NULL );
lastmove.x = dc->CursPosX;
lastmove.y = dc->CursPosY;
}
else if( lpbTypes[i] & PT_LINETO )
LineTo( hdc, lppt[i].x, lppt[i].y );
else if( lpbTypes[i] & PT_BEZIERTO )
{
PolyBezierTo( hdc, &lppt[i], 3 );
i += 2;
}
else
return FALSE;
if( lpbTypes[i] & PT_CLOSEFIGURE )
{
if( PATH_IsPathOpen( dc->path ) )
CloseFigure( hdc );
else
LineTo( hdc, lastmove.x, lastmove.y );
}
}
return TRUE;
}
/******************************************************************
*
* *Very* simple bezier drawing code,
*
* It uses a recursive algorithm to divide the curve in a series
* of straight line segements. Not ideal but for me sufficient.
* If you are in need for something better look for some incremental
* algorithm.
*
* 7 July 1998 Rein Klazes
*/
/*
* some macro definitions for bezier drawing
*
* to avoid trucation errors the coordinates are
* shifted upwards. When used in drawing they are
* shifted down again, including correct rounding
* and avoiding floating point arithmatic
* 4 bits should allow 27 bits coordinates which I saw
* somewere in the win32 doc's
*
*/
#define BEZIERSHIFTBITS 4
#define BEZIERSHIFTUP(x) ((x)<<BEZIERSHIFTBITS)
#define BEZIERPIXEL BEZIERSHIFTUP(1)
#define BEZIERSHIFTDOWN(x) (((x)+(1<<(BEZIERSHIFTBITS-1)))>>BEZIERSHIFTBITS)
/* maximum depth of recursion */
#define BEZIERMAXDEPTH 8
/* size of array to store points on */
/* enough for one curve */
#define BEZIER_INITBUFSIZE (150)
/* calculate Bezier average, in this case the middle
* correctly rounded...
* */
#define BEZIERMIDDLE(Mid, P1, P2) \
(Mid).x=((P1).x+(P2).x + 1)/2;\
(Mid).y=((P1).y+(P2).y + 1)/2;
/**********************************************************
* BezierCheck helper function to check
* that recursion can be terminated
* Points[0] and Points[3] are begin and endpoint
* Points[1] and Points[2] are control points
* level is the recursion depth
* returns true if the recusion can be terminated
*/
static BOOL BezierCheck( int level, POINT *Points)
{
INT dx, dy;
dx=Points[3].x-Points[0].x;
dy=Points[3].y-Points[0].y;
if(abs(dy)<=abs(dx)){/* shallow line */
/* check that control points are between begin and end */
if(Points[1].x < Points[0].x){
if(Points[1].x < Points[3].x)
return FALSE;
}else
if(Points[1].x > Points[3].x)
return FALSE;
if(Points[2].x < Points[0].x){
if(Points[2].x < Points[3].x)
return FALSE;
}else
if(Points[2].x > Points[3].x)
return FALSE;
dx=BEZIERSHIFTDOWN(dx);
if(!dx) return TRUE;
if(abs(Points[1].y-Points[0].y-(dy/dx)*
BEZIERSHIFTDOWN(Points[1].x-Points[0].x)) > BEZIERPIXEL ||
abs(Points[2].y-Points[0].y-(dy/dx)*
BEZIERSHIFTDOWN(Points[2].x-Points[0].x)) > BEZIERPIXEL )
return FALSE;
else
return TRUE;
}else{ /* steep line */
/* check that control points are between begin and end */
if(Points[1].y < Points[0].y){
if(Points[1].y < Points[3].y)
return FALSE;
}else
if(Points[1].y > Points[3].y)
return FALSE;
if(Points[2].y < Points[0].y){
if(Points[2].y < Points[3].y)
return FALSE;
}else
if(Points[2].y > Points[3].y)
return FALSE;
dy=BEZIERSHIFTDOWN(dy);
if(!dy) return TRUE;
if(abs(Points[1].x-Points[0].x-(dx/dy)*
BEZIERSHIFTDOWN(Points[1].y-Points[0].y)) > BEZIERPIXEL ||
abs(Points[2].x-Points[0].x-(dx/dy)*
BEZIERSHIFTDOWN(Points[2].y-Points[0].y)) > BEZIERPIXEL )
return FALSE;
else
return TRUE;
}
}
/* Helper for GDI_Bezier.
* Just handles one Bezier, so Points should point to four POINTs
*/
static void GDI_InternalBezier( POINT *Points, POINT **PtsOut, INT *dwOut,
INT *nPtsOut, INT level )
{
if(*nPtsOut == *dwOut) {
*dwOut *= 2;
*PtsOut = HeapReAlloc( GetProcessHeap(), 0, *PtsOut,
*dwOut * sizeof(POINT) );
}
if(!level || BezierCheck(level, Points)) {
if(*nPtsOut == 0) {
(*PtsOut)[0].x = BEZIERSHIFTDOWN(Points[0].x);
(*PtsOut)[0].y = BEZIERSHIFTDOWN(Points[0].y);
*nPtsOut = 1;
}
(*PtsOut)[*nPtsOut].x = BEZIERSHIFTDOWN(Points[3].x);
(*PtsOut)[*nPtsOut].y = BEZIERSHIFTDOWN(Points[3].y);
(*nPtsOut) ++;
} else {
POINT Points2[4]; /* for the second recursive call */
Points2[3]=Points[3];
BEZIERMIDDLE(Points2[2], Points[2], Points[3]);
BEZIERMIDDLE(Points2[0], Points[1], Points[2]);
BEZIERMIDDLE(Points2[1],Points2[0],Points2[2]);
BEZIERMIDDLE(Points[1], Points[0], Points[1]);
BEZIERMIDDLE(Points[2], Points[1], Points2[0]);
BEZIERMIDDLE(Points[3], Points[2], Points2[1]);
Points2[0]=Points[3];
/* do the two halves */
GDI_InternalBezier(Points, PtsOut, dwOut, nPtsOut, level-1);
GDI_InternalBezier(Points2, PtsOut, dwOut, nPtsOut, level-1);
}
}
/***********************************************************************
* GDI_Bezier [INTERNAL]
* Calculate line segments that approximate -what microsoft calls- a bezier
* curve.
* The routine recursively divides the curve in two parts until a straight
* line can be drawn
*
* PARAMS
*
* Points [I] Ptr to count POINTs which are the end and control points
* of the set of Bezier curves to flatten.
* count [I] Number of Points. Must be 3n+1.
* nPtsOut [O] Will contain no of points that have been produced (i.e. no. of
* lines+1).
*
* RETURNS
*
* Ptr to an array of POINTs that contain the lines that approximinate the
* Beziers. The array is allocated on the process heap and it is the caller's
* responsibility to HeapFree it. [this is not a particularly nice interface
* but since we can't know in advance how many points will generate, the
* alternative would be to call the function twice, once to determine the size
* and a second time to do the work - I decided this was too much of a pain].
*/
POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut )
{
POINT *out;
INT Bezier, dwOut = BEZIER_INITBUFSIZE, i;
if((count - 1) % 3 != 0) {
ERR("Invalid no. of points\n");
return NULL;
}
*nPtsOut = 0;
out = HeapAlloc( GetProcessHeap(), 0, dwOut * sizeof(POINT));
for(Bezier = 0; Bezier < (count-1)/3; Bezier++) {
POINT ptBuf[4];
memcpy(ptBuf, Points + Bezier * 3, sizeof(POINT) * 4);
for(i = 0; i < 4; i++) {
ptBuf[i].x = BEZIERSHIFTUP(ptBuf[i].x);
ptBuf[i].y = BEZIERSHIFTUP(ptBuf[i].y);
}
GDI_InternalBezier( ptBuf, &out, &dwOut, nPtsOut, BEZIERMAXDEPTH );
}
TRACE("Produced %d points\n", *nPtsOut);
return out;
}
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