include/gdi.h

   1 /*
   2  * GDI definitions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_GDI_H
   8 #define __WINE_GDI_H
   9
  10 #include "config.h"
  11
  12 #include "windef.h"
  13 #include "wingdi.h"
  14 #include "wine/wingdi16.h"
  15 #include "ldt.h"
  16 #include "local.h"
  17 #include "path.h"
  18 #include <math.h>
  19
  20   /* GDI objects magic numbers */
  21 #define PEN_MAGIC             0x4f47
  22 #define BRUSH_MAGIC           0x4f48
  23 #define FONT_MAGIC            0x4f49
  24 #define PALETTE_MAGIC         0x4f4a
  25 #define BITMAP_MAGIC          0x4f4b
  26 #define REGION_MAGIC          0x4f4c
  27 #define DC_MAGIC              0x4f4d
  28 #define DISABLED_DC_MAGIC     0x4f4e
  29 #define META_DC_MAGIC         0x4f4f
  30 #define METAFILE_MAGIC        0x4f50
  31 #define METAFILE_DC_MAGIC     0x4f51
  32 #define ENHMETAFILE_MAGIC     0x4f52
  33 #define ENHMETAFILE_DC_MAGIC  0x4f53
  34
  35 #define MAGIC_DONTCARE        0xffff
  36
  37 typedef struct tagGDIOBJHDR
  38 {
  39     HANDLE16    hNext;
  40     WORD        wMagic;
  41     DWORD       dwCount;
  42 } GDIOBJHDR;
  43
  44
  45 typedef struct tagDeviceCaps
  46 {
  47     WORD   version;       /*   0: driver version */
  48     WORD   technology;    /*   2: device technology */
  49     WORD   horzSize;      /*   4: width of display in mm */
  50     WORD   vertSize;      /*   6: height of display in mm */
  51     WORD   horzRes;       /*   8: width of display in pixels */
  52     WORD   vertRes;       /*  10: width of display in pixels */
  53     WORD   bitsPixel;     /*  12: bits per pixel */
  54     WORD   planes;        /*  14: color planes */
  55     WORD   numBrushes;    /*  16: device-specific brushes */
  56     WORD   numPens;       /*  18: device-specific pens */
  57     WORD   numMarkers;    /*  20: device-specific markers */
  58     WORD   numFonts;      /*  22: device-specific fonts */
  59     WORD   numColors;     /*  24: size of color table */
  60     WORD   pdeviceSize;   /*  26: size of PDEVICE structure */
  61     WORD   curveCaps;     /*  28: curve capabilities */
  62     WORD   lineCaps;      /*  30: line capabilities */
  63     WORD   polygonalCaps; /*  32: polygon capabilities */
  64     WORD   textCaps;      /*  34: text capabilities */
  65     WORD   clipCaps;      /*  36: clipping capabilities */
  66     WORD   rasterCaps;    /*  38: raster capabilities */
  67     WORD   aspectX;       /*  40: relative width of device pixel */
  68     WORD   aspectY;       /*  42: relative height of device pixel */
  69     WORD   aspectXY;      /*  44: relative diagonal width of device pixel */
  70     WORD   pad1[21];      /*  46-86: reserved */
  71     WORD   logPixelsX;    /*  88: pixels / logical X inch */
  72     WORD   logPixelsY;    /*  90: pixels / logical Y inch */
  73     WORD   pad2[6];       /*  92-102: reserved */
  74     WORD   sizePalette;   /* 104: entries in system palette */
  75     WORD   numReserved;   /* 106: reserved entries */
  76     WORD   colorRes;      /* 108: color resolution */
  77 } DeviceCaps;
  78
  79 typedef struct tagGDI_DRIVER
  80 {
  81     BOOL (*pInitialize)(void);
  82     void (*pFinalize)(void);
  83 } GDI_DRIVER;
  84
  85 extern GDI_DRIVER *GDI_Driver;
  86
  87   /* Device independent DC information */
  88 typedef struct
  89 {
  90     int           flags;
  91     const DeviceCaps *devCaps;
  92
  93     HRGN16        hClipRgn;     /* Clip region (may be 0) */
  94     HRGN16        hVisRgn;      /* Visible region (must never be 0) */
  95     HRGN16        hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
  96     HPEN16        hPen;
  97     HBRUSH16      hBrush;
  98     HFONT16       hFont;
  99     HBITMAP16     hBitmap;
 100     HANDLE16      hDevice;
 101     HPALETTE16    hPalette;
 102
 103     GdiPath       path;
 104
 105     WORD          ROPmode;
 106     WORD          polyFillMode;
 107     WORD          stretchBltMode;
 108     WORD          relAbsMode;
 109     WORD          backgroundMode;
 110     COLORREF      backgroundColor;
 111     COLORREF      textColor;
 112     short         brushOrgX;
 113     short         brushOrgY;
 114
 115     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 116     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
 117     short         breakTotalExtra;   /* Total extra space for justification */
 118     short         breakCount;        /* Break char. count */
 119     short         breakExtra;        /* breakTotalExtra / breakCount */
 120     short         breakRem;          /* breakTotalExtra % breakCount */
 121
 122     RECT          totalExtent;
 123     BYTE          bitsPerPixel;
 124
 125     INT           MapMode;
 126     INT           GraphicsMode;      /* Graphics mode */
 127     INT           DCOrgX;            /* DC origin */
 128     INT           DCOrgY;
 129     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 130     INT           CursPosX;          /* Current position */
 131     INT           CursPosY;
 132     INT           ArcDirection;
 133     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 134     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 135     XFORM         xformVport2World;  /* Inverse of the above transformation */
 136     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 137 } WIN_DC_INFO;
 138
 139
 140 typedef BOOL16 CALLBACK (*DCHOOKPROC)(HDC16,WORD,DWORD,LPARAM);
 141
 142 typedef struct tagDC
 143 {
 144     GDIOBJHDR    header;
 145     HDC          hSelf;            /* Handle to this DC */
 146     const struct tagDC_FUNCS *funcs; /* DC function table */
 147     void         *physDev;         /* Physical device (driver-specific) */
 148     INT          saveLevel;
 149     DWORD        dwHookData;
 150     FARPROC16    hookProc;         /* the original SEGPTR ... */
 151     DCHOOKPROC   hookThunk;        /* ... and the thunk to call it */
 152
 153     INT          wndOrgX;          /* Window origin */
 154     INT          wndOrgY;
 155     INT          wndExtX;          /* Window extent */
 156     INT          wndExtY;
 157     INT          vportOrgX;        /* Viewport origin */
 158     INT          vportOrgY;
 159     INT          vportExtX;        /* Viewport extent */
 160     INT          vportExtY;
 161
 162     WIN_DC_INFO w;
 163 } DC;
 164
 165 /* Device functions for the Wine driver interface */
 166
 167 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEX16,LPNEWTEXTMETRIC16,UINT16,LPARAM);
 168
 169 typedef struct tagDC_FUNCS
 170 {
 171     INT      (*pAbortDoc)(DC*);
 172     BOOL     (*pAbortPath)(DC*);
 173     BOOL     (*pAngleArc)(DC*,INT,INT,DWORD,FLOAT,FLOAT);
 174     BOOL     (*pArc)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 175     BOOL     (*pArcTo)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 176     BOOL     (*pBeginPath)(DC*);
 177     BOOL     (*pBitBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,DWORD);
 178     LONG     (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
 179     INT      (*pChoosePixelFormat)(DC*,const PIXELFORMATDESCRIPTOR *);
 180     BOOL     (*pChord)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 181     BOOL     (*pCloseFigure)(DC*);
 182     BOOL     (*pCreateBitmap)(HBITMAP);
 183     BOOL     (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
 184     HBITMAP  (*pCreateDIBSection)(DC *,BITMAPINFO *,UINT,LPVOID *,HANDLE,
 185                                   DWORD,DWORD);
 186     HBITMAP16 (*pCreateDIBSection16)(DC *,BITMAPINFO *,UINT16,SEGPTR *,HANDLE,
 187                                      DWORD,DWORD);
 188     BOOL     (*pDeleteDC)(DC*);
 189     BOOL     (*pDeleteObject)(HGDIOBJ);
 190     INT      (*pDescribePixelFormat)(DC *,INT,UINT,PIXELFORMATDESCRIPTOR *);
 191     DWORD    (*pDeviceCapabilities)(LPSTR,LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
 192     BOOL     (*pEllipse)(DC*,INT,INT,INT,INT);
 193     INT      (*pEndDoc)(DC*);
 194     INT      (*pEndPage)(DC*);
 195     BOOL     (*pEndPath)(DC*);
 196     BOOL     (*pEnumDeviceFonts)(DC*,LPLOGFONT16,DEVICEFONTENUMPROC,LPARAM);
 197     INT      (*pEscape)(DC*,INT,INT,SEGPTR,SEGPTR);
 198     INT      (*pExcludeClipRect)(DC*,INT,INT,INT,INT);
 199     INT      (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,
 200                                LPSTR,DWORD);
 201     BOOL     (*pExtFloodFill)(DC*,INT,INT,COLORREF,UINT);
 202     BOOL     (*pExtTextOut)(DC*,INT,INT,UINT,const RECT*,LPCWSTR,UINT,
 203                             const INT*);
 204     BOOL     (*pFillPath)(DC*);
 205     BOOL     (*pFillRgn)(DC*,HRGN,HBRUSH);
 206     BOOL     (*pFlattenPath)(DC*);
 207     BOOL     (*pFrameRgn)(DC*,HRGN,HBRUSH,INT,INT);
 208     BOOL     (*pGetCharWidth)(DC*,UINT,UINT,LPINT);
 209     BOOL     (*pGetDCOrgEx)(DC*,LPPOINT);
 210     COLORREF (*pGetPixel)(DC*,INT,INT);
 211     INT      (*pGetPixelFormat)(DC*);
 212     BOOL     (*pGetTextExtentPoint)(DC*,LPCWSTR,INT,LPSIZE);
 213     BOOL     (*pGetTextMetrics)(DC*,TEXTMETRICA*);
 214     INT      (*pIntersectClipRect)(DC*,INT,INT,INT,INT);
 215     BOOL     (*pInvertRgn)(DC*,HRGN);
 216     BOOL     (*pLineTo)(DC*,INT,INT);
 217     HANDLE   (*pLoadOEMResource)(WORD,WORD);
 218     BOOL     (*pMoveToEx)(DC*,INT,INT,LPPOINT);
 219     INT      (*pOffsetClipRgn)(DC*,INT,INT);
 220     BOOL     (*pOffsetViewportOrg)(DC*,INT,INT);
 221     BOOL     (*pOffsetWindowOrg)(DC*,INT,INT);
 222     BOOL     (*pPaintRgn)(DC*,HRGN);
 223     BOOL     (*pPatBlt)(DC*,INT,INT,INT,INT,DWORD);
 224     BOOL     (*pPie)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 225     BOOL     (*pPolyBezier)(DC*,const POINT*,DWORD);
 226     BOOL     (*pPolyBezierTo)(DC*,const POINT*,DWORD);
 227     BOOL     (*pPolyDraw)(DC*,const POINT*,const BYTE *,DWORD);
 228     BOOL     (*pPolyPolygon)(DC*,const POINT*,const INT*,UINT);
 229     BOOL     (*pPolyPolyline)(DC*,const POINT*,const DWORD*,DWORD);
 230     BOOL     (*pPolygon)(DC*,const POINT*,INT);
 231     BOOL     (*pPolyline)(DC*,const POINT*,INT);
 232     BOOL     (*pPolylineTo)(DC*,const POINT*,INT);
 233     UINT     (*pRealizePalette)(DC*);
 234     BOOL     (*pRectangle)(DC*,INT,INT,INT,INT);
 235     BOOL     (*pRestoreDC)(DC*,INT);
 236     BOOL     (*pRoundRect)(DC*,INT,INT,INT,INT,INT,INT);
 237     INT      (*pSaveDC)(DC*);
 238     BOOL     (*pScaleViewportExt)(DC*,INT,INT,INT,INT);
 239     BOOL     (*pScaleWindowExt)(DC*,INT,INT,INT,INT);
 240     BOOL     (*pSelectClipPath)(DC*,INT);
 241     INT      (*pSelectClipRgn)(DC*,HRGN);
 242     HANDLE   (*pSelectObject)(DC*,HANDLE);
 243     HPALETTE (*pSelectPalette)(DC*,HPALETTE,BOOL);
 244     COLORREF (*pSetBkColor)(DC*,COLORREF);
 245     INT      (*pSetBkMode)(DC*,INT);
 246     VOID     (*pSetDeviceClipping)(DC*);
 247     INT      (*pSetDIBitsToDevice)(DC*,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,
 248                                    LPCVOID,const BITMAPINFO*,UINT);
 249     INT      (*pSetMapMode)(DC*,INT);
 250     DWORD    (*pSetMapperFlags)(DC*,DWORD);
 251     COLORREF (*pSetPixel)(DC*,INT,INT,COLORREF);
 252     BOOL     (*pSetPixelFormat)(DC*,INT,const PIXELFORMATDESCRIPTOR *);
 253     INT      (*pSetPolyFillMode)(DC*,INT);
 254     INT      (*pSetROP2)(DC*,INT);
 255     INT      (*pSetRelAbs)(DC*,INT);
 256     INT      (*pSetStretchBltMode)(DC*,INT);
 257     UINT     (*pSetTextAlign)(DC*,UINT);
 258     INT      (*pSetTextCharacterExtra)(DC*,INT);
 259     DWORD    (*pSetTextColor)(DC*,DWORD);
 260     INT      (*pSetTextJustification)(DC*,INT,INT);
 261     BOOL     (*pSetViewportExt)(DC*,INT,INT);
 262     BOOL     (*pSetViewportOrg)(DC*,INT,INT);
 263     BOOL     (*pSetWindowExt)(DC*,INT,INT);
 264     BOOL     (*pSetWindowOrg)(DC*,INT,INT);
 265     INT      (*pStartDoc)(DC*,const DOCINFOA*);
 266     INT      (*pStartPage)(DC*);
 267     BOOL     (*pStretchBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,INT,INT,DWORD);
 268     INT      (*pStretchDIBits)(DC*,INT,INT,INT,INT,INT,INT,INT,INT,
 269                                const void *,const BITMAPINFO *,UINT,DWORD);
 270     BOOL     (*pStrokeAndFillPath)(DC*);
 271     BOOL     (*pStrokePath)(DC*);
 272     BOOL     (*pSwapBuffers)(DC*);
 273     BOOL     (*pWidenPath)(DC*);
 274 } DC_FUNCTIONS;
 275
 276   /* LoadOEMResource types */
 277 #define OEM_BITMAP  1
 278 #define OEM_CURSOR  2
 279 #define OEM_ICON    3
 280
 281   /* DC hook codes */
 282 #define DCHC_INVALIDVISRGN      0x0001
 283 #define DCHC_DELETEDC           0x0002
 284
 285 #define DCHF_INVALIDATEVISRGN   0x0001
 286 #define DCHF_VALIDATEVISRGN     0x0002
 287
 288   /* DC flags */
 289 #define DC_MEMORY     0x0001   /* It is a memory DC */
 290 #define DC_SAVED      0x0002   /* It is a saved DC */
 291 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 292 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 293
 294   /* Last 32 bytes are reserved for stock object handles */
 295 #define GDI_HEAP_SIZE               0xffe0
 296
 297   /* First handle possible for stock objects (must be >= GDI_HEAP_SIZE) */
 298 #define FIRST_STOCK_HANDLE          GDI_HEAP_SIZE
 299
 300   /* Stock objects handles */
 301
 302 #define NB_STOCK_OBJECTS          (DEFAULT_GUI_FONT + 1)
 303
 304 #define STOCK_WHITE_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+WHITE_BRUSH))
 305 #define STOCK_LTGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+LTGRAY_BRUSH))
 306 #define STOCK_GRAY_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+GRAY_BRUSH))
 307 #define STOCK_DKGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+DKGRAY_BRUSH))
 308 #define STOCK_BLACK_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+BLACK_BRUSH))
 309 #define STOCK_NULL_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+NULL_BRUSH))
 310 #define STOCK_HOLLOW_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+HOLLOW_BRUSH))
 311 #define STOCK_WHITE_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+WHITE_PEN))
 312 #define STOCK_BLACK_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+BLACK_PEN))
 313 #define STOCK_NULL_PEN          ((HPEN16)(FIRST_STOCK_HANDLE+NULL_PEN))
 314 #define STOCK_OEM_FIXED_FONT    ((HFONT16)(FIRST_STOCK_HANDLE+OEM_FIXED_FONT))
 315 #define STOCK_ANSI_FIXED_FONT   ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_FIXED_FONT))
 316 #define STOCK_ANSI_VAR_FONT     ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_VAR_FONT))
 317 #define STOCK_SYSTEM_FONT       ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FONT))
 318 #define STOCK_DEVICE_DEFAULT_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEVICE_DEFAULT_FONT))
 319 #define STOCK_DEFAULT_PALETTE   ((HPALETTE16)(FIRST_STOCK_HANDLE+DEFAULT_PALETTE))
 320 #define STOCK_SYSTEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FIXED_FONT))
 321 #define STOCK_DEFAULT_GUI_FONT  ((HFONT16)(FIRST_STOCK_HANDLE+DEFAULT_GUI_FONT))
 322
 323 #define FIRST_STOCK_FONT        STOCK_OEM_FIXED_FONT
 324 #define LAST_STOCK_FONT         STOCK_DEFAULT_GUI_FONT
 325
 326 #define LAST_STOCK_HANDLE       ((DWORD)STOCK_DEFAULT_GUI_FONT)
 327
 328 extern HBITMAP hPseudoStockBitmap;
 329
 330   /* Device <-> logical coords conversion */
 331
 332 /* A floating point version of the POINT structure */
 333 typedef struct tagFLOAT_POINT
 334 {
 335    FLOAT x, y;
 336 } FLOAT_POINT;
 337
 338 /* Rounds a floating point number to integer. The world-to-viewport
 339  * transformation process is done in floating point internally. This function
 340  * is then used to round these coordinates to integer values.
 341  */
 342 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 343 {
 344    return (int)floor(val + 0.5);
 345 }
 346
 347 /* Performs a viewport-to-world transformation on the specified point (which
 348  * is in floating point format). Returns TRUE if successful, else FALSE.
 349  */
 350 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 351 {
 352     FLOAT x, y;
 353
 354     /* Check that the viewport-to-world transformation is valid */
 355     if (!dc->w.vport2WorldValid)
 356         return FALSE;
 357
 358     /* Perform the transformation */
 359     x = point->x;
 360     y = point->y;
 361     point->x = x * dc->w.xformVport2World.eM11 +
 362                y * dc->w.xformVport2World.eM21 +
 363                dc->w.xformVport2World.eDx;
 364     point->y = x * dc->w.xformVport2World.eM12 +
 365                y * dc->w.xformVport2World.eM22 +
 366                dc->w.xformVport2World.eDy;
 367
 368     return TRUE;
 369 }
 370
 371 /* Performs a viewport-to-world transformation on the specified point (which
 372  * is in integer format). Returns TRUE if successful, else FALSE.
 373  */
 374 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 375 {
 376     FLOAT_POINT floatPoint;
 377
 378     /* Perform operation with floating point */
 379     floatPoint.x=(FLOAT)point->x;
 380     floatPoint.y=(FLOAT)point->y;
 381     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 382         return FALSE;
 383
 384     /* Round to integers */
 385     point->x = GDI_ROUND(floatPoint.x);
 386     point->y = GDI_ROUND(floatPoint.y);
 387
 388     return TRUE;
 389 }
 390
 391 /* Performs a world-to-viewport transformation on the specified point (which
 392  * is in floating point format).
 393  */
 394 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 395 {
 396     FLOAT x, y;
 397
 398     /* Perform the transformation */
 399     x = point->x;
 400     y = point->y;
 401     point->x = x * dc->w.xformWorld2Vport.eM11 +
 402                y * dc->w.xformWorld2Vport.eM21 +
 403                dc->w.xformWorld2Vport.eDx;
 404     point->y = x * dc->w.xformWorld2Vport.eM12 +
 405                y * dc->w.xformWorld2Vport.eM22 +
 406                dc->w.xformWorld2Vport.eDy;
 407 }
 408
 409 /* Performs a world-to-viewport transformation on the specified point (which
 410  * is in integer format).
 411  */
 412 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 413 {
 414     FLOAT_POINT floatPoint;
 415
 416     /* Perform operation with floating point */
 417     floatPoint.x=(FLOAT)point->x;
 418     floatPoint.y=(FLOAT)point->y;
 419     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 420
 421     /* Round to integers */
 422     point->x = GDI_ROUND(floatPoint.x);
 423     point->y = GDI_ROUND(floatPoint.y);
 424 }
 425
 426 #define XDPTOLP(dc,x) \
 427     (MulDiv(((x)-(dc)->vportOrgX), (dc)->wndExtX, (dc)->vportExtX) + (dc)->wndOrgX)
 428 #define YDPTOLP(dc,y) \
 429     (MulDiv(((y)-(dc)->vportOrgY), (dc)->wndExtY, (dc)->vportExtY) + (dc)->wndOrgY)
 430 #define XLPTODP(dc,x) \
 431     (MulDiv(((x)-(dc)->wndOrgX), (dc)->vportExtX, (dc)->wndExtX) + (dc)->vportOrgX)
 432 #define YLPTODP(dc,y) \
 433     (MulDiv(((y)-(dc)->wndOrgY), (dc)->vportExtY, (dc)->wndExtY) + (dc)->vportOrgY)
 434
 435   /* Device <-> logical size conversion */
 436
 437 #define XDSTOLS(dc,x) \
 438     MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
 439 #define YDSTOLS(dc,y) \
 440     MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
 441 #define XLSTODS(dc,x) \
 442     MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
 443 #define YLSTODS(dc,y) \
 444     MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
 445
 446   /* GDI local heap */
 447
 448 extern WORD GDI_HeapSel;
 449
 450 #define GDI_HEAP_ALLOC(size) \
 451             LOCAL_Alloc( GDI_HeapSel, LMEM_FIXED, (size) )
 452 #define GDI_HEAP_ALLOC_MOVEABLE(size) \
 453             LOCAL_Alloc( GDI_HeapSel, LMEM_MOVEABLE, (size) )
 454 #define GDI_HEAP_REALLOC(handle,size) \
 455             LOCAL_ReAlloc( GDI_HeapSel, (handle), (size), LMEM_FIXED )
 456 #define GDI_HEAP_FREE(handle) \
 457             LOCAL_Free( GDI_HeapSel, (handle) )
 458
 459 #define GDI_HEAP_LOCK(handle) \
 460             LOCAL_Lock( GDI_HeapSel, (handle) )
 461 #define GDI_HEAP_LOCK_SEGPTR(handle) \
 462             LOCAL_LockSegptr( GDI_HeapSel, (handle) )
 463 #define GDI_HEAP_UNLOCK(handle) \
 464     ((((HGDIOBJ16)(handle) >= FIRST_STOCK_HANDLE) && \
 465       ((HGDIOBJ16)(handle)<=LAST_STOCK_HANDLE)) ? \
 466       0 : LOCAL_Unlock( GDI_HeapSel, (handle) ))
 467
 468 extern BOOL GDI_Init(void);
 469 extern HGDIOBJ GDI_AllocObject( WORD, WORD );
 470 extern BOOL GDI_FreeObject( HGDIOBJ );
 471 extern GDIOBJHDR * GDI_GetObjPtr( HGDIOBJ, WORD );
 472
 473 extern BOOL DRIVER_RegisterDriver( LPCSTR name, const DC_FUNCTIONS *funcs );
 474 extern const DC_FUNCTIONS *DRIVER_FindDriver( LPCSTR name );
 475 extern BOOL DRIVER_UnregisterDriver( LPCSTR name );
 476 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 477
 478 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut );
 479
 480
 481 #endif  /* __WINE_GDI_H */