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/*
* GDI definitions
*
* Copyright 1993 Alexandre Julliard
*/
#ifndef __WINE_GDI_H
#define __WINE_GDI_H
#include "config.h"
#include "windef.h"
#include "wingdi.h"
#include "wine/wingdi16.h"
#include "path.h"
#include <math.h>
/* GDI objects magic numbers */
#define FIRST_MAGIC 0x4f47
#define PEN_MAGIC 0x4f47
#define BRUSH_MAGIC 0x4f48
#define FONT_MAGIC 0x4f49
#define PALETTE_MAGIC 0x4f4a
#define BITMAP_MAGIC 0x4f4b
#define REGION_MAGIC 0x4f4c
#define DC_MAGIC 0x4f4d
#define DISABLED_DC_MAGIC 0x4f4e
#define META_DC_MAGIC 0x4f4f
#define METAFILE_MAGIC 0x4f50
#define METAFILE_DC_MAGIC 0x4f51
#define ENHMETAFILE_MAGIC 0x4f52
#define ENHMETAFILE_DC_MAGIC 0x4f53
#define LAST_MAGIC 0x4f53
#define MAGIC_DONTCARE 0xffff
/* GDI constants for making objects private/system (naming undoc. !) */
#define OBJECT_PRIVATE 0x2000
#define OBJECT_NOSYSTEM 0x8000
#define GDIMAGIC(magic) ((magic) & ~(OBJECT_PRIVATE|OBJECT_NOSYSTEM))
typedef struct tagGDIOBJHDR
{
HANDLE16 hNext;
WORD wMagic;
DWORD dwCount;
} GDIOBJHDR;
typedef struct tagDeviceCaps
{
WORD version; /* 0: driver version */
WORD technology; /* 2: device technology */
WORD horzSize; /* 4: width of display in mm */
WORD vertSize; /* 6: height of display in mm */
WORD horzRes; /* 8: width of display in pixels */
WORD vertRes; /* 10: width of display in pixels */
WORD bitsPixel; /* 12: bits per pixel */
WORD planes; /* 14: color planes */
WORD numBrushes; /* 16: device-specific brushes */
WORD numPens; /* 18: device-specific pens */
WORD numMarkers; /* 20: device-specific markers */
WORD numFonts; /* 22: device-specific fonts */
WORD numColors; /* 24: size of color table */
WORD pdeviceSize; /* 26: size of PDEVICE structure */
WORD curveCaps; /* 28: curve capabilities */
WORD lineCaps; /* 30: line capabilities */
WORD polygonalCaps; /* 32: polygon capabilities */
WORD textCaps; /* 34: text capabilities */
WORD clipCaps; /* 36: clipping capabilities */
WORD rasterCaps; /* 38: raster capabilities */
WORD aspectX; /* 40: relative width of device pixel */
WORD aspectY; /* 42: relative height of device pixel */
WORD aspectXY; /* 44: relative diagonal width of device pixel */
WORD pad1[21]; /* 46-86: reserved */
WORD logPixelsX; /* 88: pixels / logical X inch */
WORD logPixelsY; /* 90: pixels / logical Y inch */
WORD pad2[6]; /* 92-102: reserved */
WORD sizePalette; /* 104: entries in system palette */
WORD numReserved; /* 106: reserved entries */
WORD colorRes; /* 108: color resolution */
} DeviceCaps;
typedef BOOL16 CALLBACK (*DCHOOKPROC)(HDC16,WORD,DWORD,LPARAM);
typedef struct tagDC
{
GDIOBJHDR header;
HDC hSelf; /* Handle to this DC */
const struct tagDC_FUNCS *funcs; /* DC function table */
void *physDev; /* Physical device (driver-specific) */
INT saveLevel;
DWORD dwHookData;
FARPROC16 hookProc; /* the original SEGPTR ... */
DCHOOKPROC hookThunk; /* ... and the thunk to call it */
INT wndOrgX; /* Window origin */
INT wndOrgY;
INT wndExtX; /* Window extent */
INT wndExtY;
INT vportOrgX; /* Viewport origin */
INT vportOrgY;
INT vportExtX; /* Viewport extent */
INT vportExtY;
int flags;
const DeviceCaps *devCaps;
HRGN16 hClipRgn; /* Clip region (may be 0) */
HRGN16 hVisRgn; /* Visible region (must never be 0) */
HRGN16 hGCClipRgn; /* GC clip region (ClipRgn AND VisRgn) */
HPEN16 hPen;
HBRUSH16 hBrush;
HFONT16 hFont;
HBITMAP16 hBitmap;
HANDLE16 hDevice;
HPALETTE16 hPalette;
GdiPath path;
WORD ROPmode;
WORD polyFillMode;
WORD stretchBltMode;
WORD relAbsMode;
WORD backgroundMode;
COLORREF backgroundColor;
COLORREF textColor;
short brushOrgX;
short brushOrgY;
WORD textAlign; /* Text alignment from SetTextAlign() */
short charExtra; /* Spacing from SetTextCharacterExtra() */
short breakTotalExtra; /* Total extra space for justification */
short breakCount; /* Break char. count */
short breakExtra; /* breakTotalExtra / breakCount */
short breakRem; /* breakTotalExtra % breakCount */
RECT totalExtent;
BYTE bitsPerPixel;
INT MapMode;
INT GraphicsMode; /* Graphics mode */
INT DCOrgX; /* DC origin */
INT DCOrgY;
ABORTPROC pAbortProc; /* AbortProc for Printing */
INT CursPosX; /* Current position */
INT CursPosY;
INT ArcDirection;
XFORM xformWorld2Wnd; /* World-to-window transformation */
XFORM xformWorld2Vport; /* World-to-viewport transformation */
XFORM xformVport2World; /* Inverse of the above transformation */
BOOL vport2WorldValid; /* Is xformVport2World valid? */
} DC;
/* Device functions for the Wine driver interface */
typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEXW,LPNEWTEXTMETRICEXW,DWORD,
LPARAM);
typedef struct tagDC_FUNCS
{
INT (*pAbortDoc)(DC*);
BOOL (*pAbortPath)(DC*);
BOOL (*pAngleArc)(DC*,INT,INT,DWORD,FLOAT,FLOAT);
BOOL (*pArc)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
BOOL (*pArcTo)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
BOOL (*pBeginPath)(DC*);
BOOL (*pBitBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,DWORD);
LONG (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
INT (*pChoosePixelFormat)(DC*,const PIXELFORMATDESCRIPTOR *);
BOOL (*pChord)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
BOOL (*pCloseFigure)(DC*);
BOOL (*pCreateBitmap)(HBITMAP);
BOOL (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
HBITMAP (*pCreateDIBSection)(DC *,BITMAPINFO *,UINT,LPVOID *,HANDLE,
DWORD,DWORD);
BOOL (*pDeleteDC)(DC*);
BOOL (*pDeleteObject)(HGDIOBJ);
INT (*pDescribePixelFormat)(DC *,INT,UINT,PIXELFORMATDESCRIPTOR *);
DWORD (*pDeviceCapabilities)(LPSTR,LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
BOOL (*pEllipse)(DC*,INT,INT,INT,INT);
INT (*pEndDoc)(DC*);
INT (*pEndPage)(DC*);
BOOL (*pEndPath)(DC*);
BOOL (*pEnumDeviceFonts)(HDC,LPLOGFONTW,DEVICEFONTENUMPROC,LPARAM);
INT (*pEscape)(DC*,INT,INT,SEGPTR,SEGPTR);
INT (*pExcludeClipRect)(DC*,INT,INT,INT,INT);
INT (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,
LPSTR,DWORD);
BOOL (*pExtFloodFill)(DC*,INT,INT,COLORREF,UINT);
BOOL (*pExtTextOut)(DC*,INT,INT,UINT,const RECT*,LPCWSTR,UINT,
const INT*);
BOOL (*pFillPath)(DC*);
BOOL (*pFillRgn)(DC*,HRGN,HBRUSH);
BOOL (*pFlattenPath)(DC*);
BOOL (*pFrameRgn)(DC*,HRGN,HBRUSH,INT,INT);
BOOL (*pGetCharWidth)(DC*,UINT,UINT,LPINT);
BOOL (*pGetDCOrgEx)(DC*,LPPOINT);
BOOL (*pGetDeviceGammaRamp)(DC*,LPVOID);
COLORREF (*pGetPixel)(DC*,INT,INT);
INT (*pGetPixelFormat)(DC*);
BOOL (*pGetTextExtentPoint)(DC*,LPCWSTR,INT,LPSIZE);
BOOL (*pGetTextMetrics)(DC*,TEXTMETRICW*);
INT (*pIntersectClipRect)(DC*,INT,INT,INT,INT);
BOOL (*pInvertRgn)(DC*,HRGN);
BOOL (*pLineTo)(DC*,INT,INT);
BOOL (*pMoveTo)(DC*,INT,INT);
INT (*pOffsetClipRgn)(DC*,INT,INT);
BOOL (*pOffsetViewportOrg)(DC*,INT,INT);
BOOL (*pOffsetWindowOrg)(DC*,INT,INT);
BOOL (*pPaintRgn)(DC*,HRGN);
BOOL (*pPatBlt)(DC*,INT,INT,INT,INT,DWORD);
BOOL (*pPie)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
BOOL (*pPolyBezier)(DC*,const POINT*,DWORD);
BOOL (*pPolyBezierTo)(DC*,const POINT*,DWORD);
BOOL (*pPolyDraw)(DC*,const POINT*,const BYTE *,DWORD);
BOOL (*pPolyPolygon)(DC*,const POINT*,const INT*,UINT);
BOOL (*pPolyPolyline)(DC*,const POINT*,const DWORD*,DWORD);
BOOL (*pPolygon)(DC*,const POINT*,INT);
BOOL (*pPolyline)(DC*,const POINT*,INT);
BOOL (*pPolylineTo)(DC*,const POINT*,INT);
UINT (*pRealizePalette)(DC*);
BOOL (*pRectangle)(DC*,INT,INT,INT,INT);
BOOL (*pRestoreDC)(DC*,INT);
BOOL (*pRoundRect)(DC*,INT,INT,INT,INT,INT,INT);
INT (*pSaveDC)(DC*);
BOOL (*pScaleViewportExt)(DC*,INT,INT,INT,INT);
BOOL (*pScaleWindowExt)(DC*,INT,INT,INT,INT);
BOOL (*pSelectClipPath)(DC*,INT);
INT (*pSelectClipRgn)(DC*,HRGN);
HANDLE (*pSelectObject)(DC*,HANDLE);
HPALETTE (*pSelectPalette)(DC*,HPALETTE,BOOL);
COLORREF (*pSetBkColor)(DC*,COLORREF);
INT (*pSetBkMode)(DC*,INT);
VOID (*pSetDeviceClipping)(DC*);
BOOL (*pSetDeviceGammaRamp)(DC*,LPVOID);
INT (*pSetDIBitsToDevice)(DC*,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,
LPCVOID,const BITMAPINFO*,UINT);
INT (*pSetMapMode)(DC*,INT);
DWORD (*pSetMapperFlags)(DC*,DWORD);
COLORREF (*pSetPixel)(DC*,INT,INT,COLORREF);
BOOL (*pSetPixelFormat)(DC*,INT,const PIXELFORMATDESCRIPTOR *);
INT (*pSetPolyFillMode)(DC*,INT);
INT (*pSetROP2)(DC*,INT);
INT (*pSetRelAbs)(DC*,INT);
INT (*pSetStretchBltMode)(DC*,INT);
UINT (*pSetTextAlign)(DC*,UINT);
INT (*pSetTextCharacterExtra)(DC*,INT);
DWORD (*pSetTextColor)(DC*,DWORD);
INT (*pSetTextJustification)(DC*,INT,INT);
BOOL (*pSetViewportExt)(DC*,INT,INT);
BOOL (*pSetViewportOrg)(DC*,INT,INT);
BOOL (*pSetWindowExt)(DC*,INT,INT);
BOOL (*pSetWindowOrg)(DC*,INT,INT);
INT (*pStartDoc)(DC*,const DOCINFOA*);
INT (*pStartPage)(DC*);
BOOL (*pStretchBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,INT,INT,DWORD);
INT (*pStretchDIBits)(DC*,INT,INT,INT,INT,INT,INT,INT,INT,
const void *,const BITMAPINFO *,UINT,DWORD);
BOOL (*pStrokeAndFillPath)(DC*);
BOOL (*pStrokePath)(DC*);
BOOL (*pSwapBuffers)(DC*);
BOOL (*pWidenPath)(DC*);
} DC_FUNCTIONS;
/* LoadOEMResource types */
#define OEM_BITMAP 1
#define OEM_CURSOR 2
#define OEM_ICON 3
/* DC hook codes */
#define DCHC_INVALIDVISRGN 0x0001
#define DCHC_DELETEDC 0x0002
#define DCHF_INVALIDATEVISRGN 0x0001
#define DCHF_VALIDATEVISRGN 0x0002
/* DC flags */
#define DC_MEMORY 0x0001 /* It is a memory DC */
#define DC_SAVED 0x0002 /* It is a saved DC */
#define DC_DIRTY 0x0004 /* hVisRgn has to be updated */
#define DC_THUNKHOOK 0x0008 /* DC hook is in the 16-bit code */
/* Last 32 bytes are reserved for stock object handles */
#define GDI_HEAP_SIZE 0xffe0
/* First handle possible for stock objects (must be >= GDI_HEAP_SIZE) */
#define FIRST_STOCK_HANDLE GDI_HEAP_SIZE
/* Stock objects handles */
#define NB_STOCK_OBJECTS (DEFAULT_GUI_FONT + 1)
#define STOCK_WHITE_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+WHITE_BRUSH))
#define STOCK_LTGRAY_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+LTGRAY_BRUSH))
#define STOCK_GRAY_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+GRAY_BRUSH))
#define STOCK_DKGRAY_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+DKGRAY_BRUSH))
#define STOCK_BLACK_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+BLACK_BRUSH))
#define STOCK_NULL_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+NULL_BRUSH))
#define STOCK_HOLLOW_BRUSH ((HBRUSH16)(FIRST_STOCK_HANDLE+HOLLOW_BRUSH))
#define STOCK_WHITE_PEN ((HPEN16)(FIRST_STOCK_HANDLE+WHITE_PEN))
#define STOCK_BLACK_PEN ((HPEN16)(FIRST_STOCK_HANDLE+BLACK_PEN))
#define STOCK_NULL_PEN ((HPEN16)(FIRST_STOCK_HANDLE+NULL_PEN))
#define STOCK_OEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+OEM_FIXED_FONT))
#define STOCK_ANSI_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_FIXED_FONT))
#define STOCK_ANSI_VAR_FONT ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_VAR_FONT))
#define STOCK_SYSTEM_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FONT))
#define STOCK_DEVICE_DEFAULT_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEVICE_DEFAULT_FONT))
#define STOCK_DEFAULT_PALETTE ((HPALETTE16)(FIRST_STOCK_HANDLE+DEFAULT_PALETTE))
#define STOCK_SYSTEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FIXED_FONT))
#define STOCK_DEFAULT_GUI_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEFAULT_GUI_FONT))
#define FIRST_STOCK_FONT STOCK_OEM_FIXED_FONT
#define LAST_STOCK_FONT STOCK_DEFAULT_GUI_FONT
#define LAST_STOCK_HANDLE ((DWORD)STOCK_DEFAULT_GUI_FONT)
extern HBITMAP hPseudoStockBitmap;
/* Device <-> logical coords conversion */
/* A floating point version of the POINT structure */
typedef struct tagFLOAT_POINT
{
FLOAT x, y;
} FLOAT_POINT;
/* Rounds a floating point number to integer. The world-to-viewport
* transformation process is done in floating point internally. This function
* is then used to round these coordinates to integer values.
*/
static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
{
return (int)floor(val + 0.5);
}
/* Performs a viewport-to-world transformation on the specified point (which
* is in floating point format). Returns TRUE if successful, else FALSE.
*/
static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
{
FLOAT x, y;
/* Check that the viewport-to-world transformation is valid */
if (!dc->vport2WorldValid)
return FALSE;
/* Perform the transformation */
x = point->x;
y = point->y;
point->x = x * dc->xformVport2World.eM11 +
y * dc->xformVport2World.eM21 +
dc->xformVport2World.eDx;
point->y = x * dc->xformVport2World.eM12 +
y * dc->xformVport2World.eM22 +
dc->xformVport2World.eDy;
return TRUE;
}
/* Performs a viewport-to-world transformation on the specified point (which
* is in integer format). Returns TRUE if successful, else FALSE.
*/
static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
{
FLOAT_POINT floatPoint;
/* Perform operation with floating point */
floatPoint.x=(FLOAT)point->x;
floatPoint.y=(FLOAT)point->y;
if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
return FALSE;
/* Round to integers */
point->x = GDI_ROUND(floatPoint.x);
point->y = GDI_ROUND(floatPoint.y);
return TRUE;
}
/* Performs a world-to-viewport transformation on the specified point (which
* is in floating point format).
*/
static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
{
FLOAT x, y;
/* Perform the transformation */
x = point->x;
y = point->y;
point->x = x * dc->xformWorld2Vport.eM11 +
y * dc->xformWorld2Vport.eM21 +
dc->xformWorld2Vport.eDx;
point->y = x * dc->xformWorld2Vport.eM12 +
y * dc->xformWorld2Vport.eM22 +
dc->xformWorld2Vport.eDy;
}
/* Performs a world-to-viewport transformation on the specified point (which
* is in integer format).
*/
static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
{
FLOAT_POINT floatPoint;
/* Perform operation with floating point */
floatPoint.x=(FLOAT)point->x;
floatPoint.y=(FLOAT)point->y;
INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
/* Round to integers */
point->x = GDI_ROUND(floatPoint.x);
point->y = GDI_ROUND(floatPoint.y);
}
/* Performs a world-to-viewport transformation on the specified point (which
* is in integer format).
*/
static inline INT WINE_UNUSED INTERNAL_XWPTODP(DC *dc, INT x, INT y)
{
FLOAT_POINT floatPoint;
/* Perform operation with floating point */
floatPoint.x=(FLOAT)x;
floatPoint.y=(FLOAT)y;
INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
/* Round to integers */
return GDI_ROUND(floatPoint.x);
}
/* Performs a world-to-viewport transformation on the specified point (which
* is in integer format).
*/
static inline INT WINE_UNUSED INTERNAL_YWPTODP(DC *dc, INT x, INT y)
{
FLOAT_POINT floatPoint;
/* Perform operation with floating point */
floatPoint.x=(FLOAT)x;
floatPoint.y=(FLOAT)y;
INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
/* Round to integers */
return GDI_ROUND(floatPoint.y);
}
/* Performs a viewport-to-world transformation on the specified point (which
* is in integer format).
*/
static inline INT WINE_UNUSED INTERNAL_XDPTOWP(DC *dc, INT x, INT y)
{
FLOAT_POINT floatPoint;
/* Perform operation with floating point */
floatPoint.x=(FLOAT)x;
floatPoint.y=(FLOAT)y;
INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
/* Round to integers */
return GDI_ROUND(floatPoint.x);
}
/* Performs a viewport-to-world transformation on the specified point (which
* is in integer format).
*/
static inline INT WINE_UNUSED INTERNAL_YDPTOWP(DC *dc, INT x, INT y)
{
FLOAT_POINT floatPoint;
/* Perform operation with floating point */
floatPoint.x=(FLOAT)x;
floatPoint.y=(FLOAT)y;
INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
/* Round to integers */
return GDI_ROUND(floatPoint.y);
}
#define XDPTOLP(dc,x) \
(MulDiv(((x)-(dc)->vportOrgX), (dc)->wndExtX, (dc)->vportExtX) + (dc)->wndOrgX)
#define YDPTOLP(dc,y) \
(MulDiv(((y)-(dc)->vportOrgY), (dc)->wndExtY, (dc)->vportExtY) + (dc)->wndOrgY)
#define XLPTODP(dc,x) \
(MulDiv(((x)-(dc)->wndOrgX), (dc)->vportExtX, (dc)->wndExtX) + (dc)->vportOrgX)
#define YLPTODP(dc,y) \
(MulDiv(((y)-(dc)->wndOrgY), (dc)->vportExtY, (dc)->wndExtY) + (dc)->vportOrgY)
/* World -> Device size conversion */
/* Performs a world-to-viewport transformation on the specified width (which
* is in floating point format).
*/
static inline void WINE_UNUSED INTERNAL_XWSTODS_FLOAT(DC *dc, FLOAT *width)
{
/* Perform the transformation */
*width = *width * dc->xformWorld2Vport.eM11;
}
/* Performs a world-to-viewport transformation on the specified width (which
* is in integer format).
*/
static inline INT WINE_UNUSED INTERNAL_XWSTODS(DC *dc, INT width)
{
FLOAT floatWidth;
/* Perform operation with floating point */
floatWidth = (FLOAT)width;
INTERNAL_XWSTODS_FLOAT(dc, &floatWidth);
/* Round to integers */
return GDI_ROUND(floatWidth);
}
/* Performs a world-to-viewport transformation on the specified size (which
* is in floating point format).
*/
static inline void WINE_UNUSED INTERNAL_YWSTODS_FLOAT(DC *dc, FLOAT *height)
{
/* Perform the transformation */
*height = *height * dc->xformWorld2Vport.eM22;
}
/* Performs a world-to-viewport transformation on the specified size (which
* is in integer format).
*/
static inline INT WINE_UNUSED INTERNAL_YWSTODS(DC *dc, INT height)
{
FLOAT floatHeight;
/* Perform operation with floating point */
floatHeight = (FLOAT)height;
INTERNAL_YWSTODS_FLOAT(dc, &floatHeight);
/* Round to integers */
return GDI_ROUND(floatHeight);
}
/* Device <-> logical size conversion */
#define XDSTOLS(dc,x) \
MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
#define YDSTOLS(dc,y) \
MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
#define XLSTODS(dc,x) \
MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
#define YLSTODS(dc,y) \
MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
/* GDI local heap */
extern BOOL GDI_Init(void);
extern void *GDI_AllocObject( WORD, WORD, HGDIOBJ * );
extern void *GDI_ReallocObject( WORD, HGDIOBJ, void *obj );
extern BOOL GDI_FreeObject( HGDIOBJ, void *obj );
extern void *GDI_GetObjPtr( HGDIOBJ, WORD );
extern void GDI_ReleaseObj( HGDIOBJ );
extern BOOL DRIVER_RegisterDriver( LPCSTR name, const DC_FUNCTIONS *funcs );
extern const DC_FUNCTIONS *DRIVER_FindDriver( LPCSTR name );
extern BOOL DRIVER_UnregisterDriver( LPCSTR name );
extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut );
extern DC * DC_AllocDC( const DC_FUNCTIONS *funcs );
extern DC * DC_GetDCPtr( HDC hdc );
extern DC * DC_GetDCUpdate( HDC hdc );
extern void DC_InitDC( DC * dc );
extern void DC_UpdateXforms( DC * dc );
#define CLIP_INTERSECT 0x0001
#define CLIP_EXCLUDE 0x0002
#define CLIP_KEEPRGN 0x0004
/* objects/clipping.c */
INT CLIPPING_IntersectClipRect( DC * dc, INT left, INT top,
INT right, INT bottom, UINT flags );
INT CLIPPING_IntersectVisRect( DC * dc, INT left, INT top,
INT right, INT bottom, BOOL exclude );
extern void CLIPPING_UpdateGCRegion( DC * dc );
#endif /* __WINE_GDI_H */
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