include/gdi.h

   1 /*
   2  * GDI definitions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __WINE_GDI_H
  22 #define __WINE_GDI_H
  23
  24 #include "windef.h"
  25 #include "wingdi.h"
  26 #include "wine/wingdi16.h"
  27 #include "path.h"
  28 #include <math.h>
  29
  30   /* GDI objects magic numbers */
  31 #define FIRST_MAGIC           0x4f47
  32 #define PEN_MAGIC             0x4f47
  33 #define BRUSH_MAGIC           0x4f48
  34 #define FONT_MAGIC            0x4f49
  35 #define PALETTE_MAGIC         0x4f4a
  36 #define BITMAP_MAGIC          0x4f4b
  37 #define REGION_MAGIC          0x4f4c
  38 #define DC_MAGIC              0x4f4d
  39 #define DISABLED_DC_MAGIC     0x4f4e
  40 #define META_DC_MAGIC         0x4f4f
  41 #define METAFILE_MAGIC        0x4f50
  42 #define METAFILE_DC_MAGIC     0x4f51
  43 #define ENHMETAFILE_MAGIC     0x4f52
  44 #define ENHMETAFILE_DC_MAGIC  0x4f53
  45 #define LAST_MAGIC            0x4f53
  46
  47 #define MAGIC_DONTCARE        0xffff
  48
  49 /* GDI constants for making objects private/system (naming undoc. !) */
  50 #define OBJECT_PRIVATE        0x2000
  51 #define OBJECT_NOSYSTEM       0x8000
  52
  53 #define GDIMAGIC(magic) ((magic) & ~(OBJECT_PRIVATE|OBJECT_NOSYSTEM))
  54
  55 typedef struct tagGDIOBJHDR
  56 {
  57     HANDLE16    hNext;
  58     WORD        wMagic;
  59     DWORD       dwCount;
  60 } GDIOBJHDR;
  61
  62
  63 typedef struct tagGdiFont *GdiFont;
  64
  65 typedef struct tagDC
  66 {
  67     GDIOBJHDR    header;
  68     HDC          hSelf;            /* Handle to this DC */
  69     const struct tagDC_FUNCS *funcs; /* DC function table */
  70     void         *physDev;         /* Physical device (driver-specific) */
  71     INT          saveLevel;
  72     DWORD        dwHookData;
  73     FARPROC16    hookProc;         /* the original SEGPTR ... */
  74     DCHOOKPROC   hookThunk;        /* ... and the thunk to call it */
  75
  76     INT          wndOrgX;          /* Window origin */
  77     INT          wndOrgY;
  78     INT          wndExtX;          /* Window extent */
  79     INT          wndExtY;
  80     INT          vportOrgX;        /* Viewport origin */
  81     INT          vportOrgY;
  82     INT          vportExtX;        /* Viewport extent */
  83     INT          vportExtY;
  84
  85     int           flags;
  86     HRGN16        hClipRgn;     /* Clip region (may be 0) */
  87     HRGN16        hVisRgn;      /* Visible region (must never be 0) */
  88     HRGN16        hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
  89     HPEN16        hPen;
  90     HBRUSH16      hBrush;
  91     HFONT16       hFont;
  92     HBITMAP16     hBitmap;
  93     HANDLE16      hDevice;
  94     HPALETTE16    hPalette;
  95
  96     GdiFont       gdiFont;
  97     GdiPath       path;
  98
  99     WORD          ROPmode;
 100     WORD          polyFillMode;
 101     WORD          stretchBltMode;
 102     WORD          relAbsMode;
 103     WORD          backgroundMode;
 104     COLORREF      backgroundColor;
 105     COLORREF      textColor;
 106     short         brushOrgX;
 107     short         brushOrgY;
 108
 109     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 110     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
 111     short         breakTotalExtra;   /* Total extra space for justification */
 112     short         breakCount;        /* Break char. count */
 113     short         breakExtra;        /* breakTotalExtra / breakCount */
 114     short         breakRem;          /* breakTotalExtra % breakCount */
 115
 116     RECT          totalExtent;
 117     BYTE          bitsPerPixel;
 118
 119     INT           MapMode;
 120     INT           GraphicsMode;      /* Graphics mode */
 121     INT           DCOrgX;            /* DC origin */
 122     INT           DCOrgY;
 123     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 124     ABORTPROC16   pAbortProc16;
 125     INT           CursPosX;          /* Current position */
 126     INT           CursPosY;
 127     INT           ArcDirection;
 128     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 129     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 130     XFORM         xformVport2World;  /* Inverse of the above transformation */
 131     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 132 } DC;
 133
 134 /* Device functions for the Wine driver interface */
 135
 136 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEXW,LPNEWTEXTMETRICEXW,DWORD,
 137                                   LPARAM);
 138
 139 typedef struct tagDC_FUNCS
 140 {
 141     INT      (*pAbortDoc)(DC*);
 142     BOOL     (*pAbortPath)(DC*);
 143     BOOL     (*pAngleArc)(DC*,INT,INT,DWORD,FLOAT,FLOAT);
 144     BOOL     (*pArc)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 145     BOOL     (*pArcTo)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 146     BOOL     (*pBeginPath)(DC*);
 147     BOOL     (*pBitBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,DWORD);
 148     LONG     (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
 149     INT      (*pChoosePixelFormat)(DC*,const PIXELFORMATDESCRIPTOR *);
 150     BOOL     (*pChord)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 151     BOOL     (*pCloseFigure)(DC*);
 152     BOOL     (*pCreateBitmap)(HBITMAP);
 153     BOOL     (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
 154     HBITMAP  (*pCreateDIBSection)(DC *,BITMAPINFO *,UINT,LPVOID *,HANDLE,
 155                                   DWORD,DWORD);
 156     BOOL     (*pDeleteDC)(DC*);
 157     BOOL     (*pDeleteObject)(HGDIOBJ);
 158     INT      (*pDescribePixelFormat)(DC *,INT,UINT,PIXELFORMATDESCRIPTOR *);
 159     DWORD    (*pDeviceCapabilities)(LPSTR,LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
 160     BOOL     (*pEllipse)(DC*,INT,INT,INT,INT);
 161     INT      (*pEndDoc)(DC*);
 162     INT      (*pEndPage)(DC*);
 163     BOOL     (*pEndPath)(DC*);
 164     BOOL     (*pEnumDeviceFonts)(HDC,LPLOGFONTW,DEVICEFONTENUMPROC,LPARAM);
 165     INT      (*pExcludeClipRect)(DC*,INT,INT,INT,INT);
 166     INT      (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 167     INT      (*pExtEscape)(DC*,INT,INT,LPCVOID,INT,LPVOID);
 168     BOOL     (*pExtFloodFill)(DC*,INT,INT,COLORREF,UINT);
 169     BOOL     (*pExtTextOut)(DC*,INT,INT,UINT,const RECT*,LPCWSTR,UINT,
 170                             const INT*);
 171     BOOL     (*pFillPath)(DC*);
 172     BOOL     (*pFillRgn)(DC*,HRGN,HBRUSH);
 173     BOOL     (*pFlattenPath)(DC*);
 174     BOOL     (*pFrameRgn)(DC*,HRGN,HBRUSH,INT,INT);
 175     BOOL     (*pGetCharWidth)(DC*,UINT,UINT,LPINT);
 176     BOOL     (*pGetDCOrgEx)(DC*,LPPOINT);
 177     INT      (*pGetDeviceCaps)(DC*,INT);
 178     BOOL     (*pGetDeviceGammaRamp)(DC*,LPVOID);
 179     COLORREF (*pGetPixel)(DC*,INT,INT);
 180     INT      (*pGetPixelFormat)(DC*);
 181     BOOL     (*pGetTextExtentPoint)(DC*,LPCWSTR,INT,LPSIZE);
 182     BOOL     (*pGetTextMetrics)(DC*,TEXTMETRICW*);
 183     INT      (*pIntersectClipRect)(DC*,INT,INT,INT,INT);
 184     BOOL     (*pInvertRgn)(DC*,HRGN);
 185     BOOL     (*pLineTo)(DC*,INT,INT);
 186     BOOL     (*pMoveTo)(DC*,INT,INT);
 187     INT      (*pOffsetClipRgn)(DC*,INT,INT);
 188     BOOL     (*pOffsetViewportOrg)(DC*,INT,INT);
 189     BOOL     (*pOffsetWindowOrg)(DC*,INT,INT);
 190     BOOL     (*pPaintRgn)(DC*,HRGN);
 191     BOOL     (*pPatBlt)(DC*,INT,INT,INT,INT,DWORD);
 192     BOOL     (*pPie)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 193     BOOL     (*pPolyBezier)(DC*,const POINT*,DWORD);
 194     BOOL     (*pPolyBezierTo)(DC*,const POINT*,DWORD);
 195     BOOL     (*pPolyDraw)(DC*,const POINT*,const BYTE *,DWORD);
 196     BOOL     (*pPolyPolygon)(DC*,const POINT*,const INT*,UINT);
 197     BOOL     (*pPolyPolyline)(DC*,const POINT*,const DWORD*,DWORD);
 198     BOOL     (*pPolygon)(DC*,const POINT*,INT);
 199     BOOL     (*pPolyline)(DC*,const POINT*,INT);
 200     BOOL     (*pPolylineTo)(DC*,const POINT*,INT);
 201     UINT     (*pRealizePalette)(DC*);
 202     BOOL     (*pRectangle)(DC*,INT,INT,INT,INT);
 203     BOOL     (*pRestoreDC)(DC*,INT);
 204     BOOL     (*pRoundRect)(DC*,INT,INT,INT,INT,INT,INT);
 205     INT      (*pSaveDC)(DC*);
 206     BOOL     (*pScaleViewportExt)(DC*,INT,INT,INT,INT);
 207     BOOL     (*pScaleWindowExt)(DC*,INT,INT,INT,INT);
 208     BOOL     (*pSelectClipPath)(DC*,INT);
 209     INT      (*pSelectClipRgn)(DC*,HRGN);
 210     HANDLE   (*pSelectObject)(DC*,HANDLE);
 211     HPALETTE (*pSelectPalette)(DC*,HPALETTE,BOOL);
 212     COLORREF (*pSetBkColor)(DC*,COLORREF);
 213     INT      (*pSetBkMode)(DC*,INT);
 214     VOID     (*pSetDeviceClipping)(DC*);
 215     BOOL     (*pSetDeviceGammaRamp)(DC*,LPVOID);
 216     INT      (*pSetDIBitsToDevice)(DC*,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,
 217                                    LPCVOID,const BITMAPINFO*,UINT);
 218     INT      (*pSetMapMode)(DC*,INT);
 219     DWORD    (*pSetMapperFlags)(DC*,DWORD);
 220     COLORREF (*pSetPixel)(DC*,INT,INT,COLORREF);
 221     BOOL     (*pSetPixelFormat)(DC*,INT,const PIXELFORMATDESCRIPTOR *);
 222     INT      (*pSetPolyFillMode)(DC*,INT);
 223     INT      (*pSetROP2)(DC*,INT);
 224     INT      (*pSetRelAbs)(DC*,INT);
 225     INT      (*pSetStretchBltMode)(DC*,INT);
 226     UINT     (*pSetTextAlign)(DC*,UINT);
 227     INT      (*pSetTextCharacterExtra)(DC*,INT);
 228     DWORD    (*pSetTextColor)(DC*,DWORD);
 229     INT      (*pSetTextJustification)(DC*,INT,INT);
 230     BOOL     (*pSetViewportExt)(DC*,INT,INT);
 231     BOOL     (*pSetViewportOrg)(DC*,INT,INT);
 232     BOOL     (*pSetWindowExt)(DC*,INT,INT);
 233     BOOL     (*pSetWindowOrg)(DC*,INT,INT);
 234     INT      (*pStartDoc)(DC*,const DOCINFOA*);
 235     INT      (*pStartPage)(DC*);
 236     BOOL     (*pStretchBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,INT,INT,DWORD);
 237     INT      (*pStretchDIBits)(DC*,INT,INT,INT,INT,INT,INT,INT,INT,
 238                                const void *,const BITMAPINFO *,UINT,DWORD);
 239     BOOL     (*pStrokeAndFillPath)(DC*);
 240     BOOL     (*pStrokePath)(DC*);
 241     BOOL     (*pSwapBuffers)(DC*);
 242     BOOL     (*pWidenPath)(DC*);
 243 } DC_FUNCTIONS;
 244
 245   /* DC hook codes */
 246 #define DCHC_INVALIDVISRGN      0x0001
 247 #define DCHC_DELETEDC           0x0002
 248
 249 #define DCHF_INVALIDATEVISRGN   0x0001
 250 #define DCHF_VALIDATEVISRGN     0x0002
 251
 252   /* DC flags */
 253 #define DC_MEMORY     0x0001   /* It is a memory DC */
 254 #define DC_SAVED      0x0002   /* It is a saved DC */
 255 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 256 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 257
 258 #define GDI_HEAP_SIZE 0xffe0
 259
 260 /* extra stock object: default 1x1 bitmap for memory DCs */
 261 #define DEFAULT_BITMAP (STOCK_LAST+1)
 262
 263   /* Device <-> logical coords conversion */
 264
 265 /* A floating point version of the POINT structure */
 266 typedef struct tagFLOAT_POINT
 267 {
 268    FLOAT x, y;
 269 } FLOAT_POINT;
 270
 271 /* Rounds a floating point number to integer. The world-to-viewport
 272  * transformation process is done in floating point internally. This function
 273  * is then used to round these coordinates to integer values.
 274  */
 275 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 276 {
 277    return (int)floor(val + 0.5);
 278 }
 279
 280 /* Performs a viewport-to-world transformation on the specified point (which
 281  * is in floating point format). Returns TRUE if successful, else FALSE.
 282  */
 283 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 284 {
 285     FLOAT x, y;
 286
 287     /* Check that the viewport-to-world transformation is valid */
 288     if (!dc->vport2WorldValid)
 289         return FALSE;
 290
 291     /* Perform the transformation */
 292     x = point->x;
 293     y = point->y;
 294     point->x = x * dc->xformVport2World.eM11 +
 295                y * dc->xformVport2World.eM21 +
 296                dc->xformVport2World.eDx;
 297     point->y = x * dc->xformVport2World.eM12 +
 298                y * dc->xformVport2World.eM22 +
 299                dc->xformVport2World.eDy;
 300
 301     return TRUE;
 302 }
 303
 304 /* Performs a viewport-to-world transformation on the specified point (which
 305  * is in integer format). Returns TRUE if successful, else FALSE.
 306  */
 307 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 308 {
 309     FLOAT_POINT floatPoint;
 310
 311     /* Perform operation with floating point */
 312     floatPoint.x=(FLOAT)point->x;
 313     floatPoint.y=(FLOAT)point->y;
 314     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 315         return FALSE;
 316
 317     /* Round to integers */
 318     point->x = GDI_ROUND(floatPoint.x);
 319     point->y = GDI_ROUND(floatPoint.y);
 320
 321     return TRUE;
 322 }
 323
 324 /* Performs a world-to-viewport transformation on the specified point (which
 325  * is in floating point format).
 326  */
 327 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 328 {
 329     FLOAT x, y;
 330
 331     /* Perform the transformation */
 332     x = point->x;
 333     y = point->y;
 334     point->x = x * dc->xformWorld2Vport.eM11 +
 335                y * dc->xformWorld2Vport.eM21 +
 336                dc->xformWorld2Vport.eDx;
 337     point->y = x * dc->xformWorld2Vport.eM12 +
 338                y * dc->xformWorld2Vport.eM22 +
 339                dc->xformWorld2Vport.eDy;
 340 }
 341
 342 /* Performs a world-to-viewport transformation on the specified point (which
 343  * is in integer format).
 344  */
 345 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 346 {
 347     FLOAT_POINT floatPoint;
 348
 349     /* Perform operation with floating point */
 350     floatPoint.x=(FLOAT)point->x;
 351     floatPoint.y=(FLOAT)point->y;
 352     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 353
 354     /* Round to integers */
 355     point->x = GDI_ROUND(floatPoint.x);
 356     point->y = GDI_ROUND(floatPoint.y);
 357 }
 358
 359
 360 /* Performs a world-to-viewport transformation on the specified point (which
 361  * is in integer format).
 362  */
 363 static inline INT WINE_UNUSED INTERNAL_XWPTODP(DC *dc, INT x, INT y)
 364 {
 365     FLOAT_POINT floatPoint;
 366
 367     /* Perform operation with floating point */
 368     floatPoint.x=(FLOAT)x;
 369     floatPoint.y=(FLOAT)y;
 370     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 371
 372     /* Round to integers */
 373     return GDI_ROUND(floatPoint.x);
 374 }
 375
 376 /* Performs a world-to-viewport transformation on the specified point (which
 377  * is in integer format).
 378  */
 379 static inline INT WINE_UNUSED INTERNAL_YWPTODP(DC *dc, INT x, INT y)
 380 {
 381     FLOAT_POINT floatPoint;
 382
 383     /* Perform operation with floating point */
 384     floatPoint.x=(FLOAT)x;
 385     floatPoint.y=(FLOAT)y;
 386     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 387
 388     /* Round to integers */
 389     return GDI_ROUND(floatPoint.y);
 390 }
 391
 392
 393 /* Performs a viewport-to-world transformation on the specified point (which
 394  * is in integer format).
 395  */
 396 static inline INT WINE_UNUSED INTERNAL_XDPTOWP(DC *dc, INT x, INT y)
 397 {
 398     FLOAT_POINT floatPoint;
 399
 400     /* Perform operation with floating point */
 401     floatPoint.x=(FLOAT)x;
 402     floatPoint.y=(FLOAT)y;
 403     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 404
 405     /* Round to integers */
 406     return GDI_ROUND(floatPoint.x);
 407 }
 408
 409 /* Performs a viewport-to-world transformation on the specified point (which
 410  * is in integer format).
 411  */
 412 static inline INT WINE_UNUSED INTERNAL_YDPTOWP(DC *dc, INT x, INT y)
 413 {
 414     FLOAT_POINT floatPoint;
 415
 416     /* Perform operation with floating point */
 417     floatPoint.x=(FLOAT)x;
 418     floatPoint.y=(FLOAT)y;
 419     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 420
 421     /* Round to integers */
 422     return GDI_ROUND(floatPoint.y);
 423 }
 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
 436
 437   /* World -> Device size conversion */
 438
 439 /* Performs a world-to-viewport transformation on the specified width (which
 440  * is in floating point format).
 441  */
 442 static inline void WINE_UNUSED INTERNAL_XWSTODS_FLOAT(DC *dc, FLOAT *width)
 443 {
 444     /* Perform the transformation */
 445     *width = *width * dc->xformWorld2Vport.eM11;
 446 }
 447
 448 /* Performs a world-to-viewport transformation on the specified width (which
 449  * is in integer format).
 450  */
 451 static inline INT WINE_UNUSED INTERNAL_XWSTODS(DC *dc, INT width)
 452 {
 453     FLOAT floatWidth;
 454
 455     /* Perform operation with floating point */
 456     floatWidth = (FLOAT)width;
 457     INTERNAL_XWSTODS_FLOAT(dc, &floatWidth);
 458
 459     /* Round to integers */
 460     return GDI_ROUND(floatWidth);
 461 }
 462
 463
 464 /* Performs a world-to-viewport transformation on the specified size (which
 465  * is in floating point format).
 466  */
 467 static inline void WINE_UNUSED INTERNAL_YWSTODS_FLOAT(DC *dc, FLOAT *height)
 468 {
 469     /* Perform the transformation */
 470     *height = *height * dc->xformWorld2Vport.eM22;
 471 }
 472
 473 /* Performs a world-to-viewport transformation on the specified size (which
 474  * is in integer format).
 475  */
 476 static inline INT WINE_UNUSED INTERNAL_YWSTODS(DC *dc, INT height)
 477 {
 478     FLOAT floatHeight;
 479
 480     /* Perform operation with floating point */
 481     floatHeight = (FLOAT)height;
 482     INTERNAL_YWSTODS_FLOAT(dc, &floatHeight);
 483
 484     /* Round to integers */
 485     return GDI_ROUND(floatHeight);
 486 }
 487
 488
 489   /* Device <-> logical size conversion */
 490
 491 #define XDSTOLS(dc,x) \
 492     MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
 493 #define YDSTOLS(dc,y) \
 494     MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
 495 #define XLSTODS(dc,x) \
 496     MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
 497 #define YLSTODS(dc,y) \
 498     MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
 499
 500   /* GDI local heap */
 501
 502 extern BOOL GDI_Init(void);
 503 extern void *GDI_AllocObject( WORD, WORD, HGDIOBJ * );
 504 extern void *GDI_ReallocObject( WORD, HGDIOBJ, void *obj );
 505 extern BOOL GDI_FreeObject( HGDIOBJ, void *obj );
 506 extern void *GDI_GetObjPtr( HGDIOBJ, WORD );
 507 extern void GDI_ReleaseObj( HGDIOBJ );
 508 extern void GDI_CheckNotLock(void);
 509
 510 extern const DC_FUNCTIONS *DRIVER_load_driver( LPCSTR name );
 511 extern const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs );
 512 extern void DRIVER_release_driver( const DC_FUNCTIONS *funcs );
 513 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 514
 515 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut );
 516
 517 extern DC * DC_AllocDC( const DC_FUNCTIONS *funcs );
 518 extern DC * DC_GetDCPtr( HDC hdc );
 519 extern DC * DC_GetDCUpdate( HDC hdc );
 520 extern void DC_InitDC( DC * dc );
 521 extern void DC_UpdateXforms( DC * dc );
 522
 523
 524 #define CLIP_INTERSECT 0x0001
 525 #define CLIP_EXCLUDE   0x0002
 526 #define CLIP_KEEPRGN   0x0004
 527
 528 /* objects/clipping.c */
 529 INT CLIPPING_IntersectClipRect( DC * dc, INT left, INT top,
 530                                 INT right, INT bottom, UINT flags );
 531 INT CLIPPING_IntersectVisRect( DC * dc, INT left, INT top,
 532                                INT right, INT bottom, BOOL exclude );
 533 extern void CLIPPING_UpdateGCRegion( DC * dc );
 534
 535 /* objects/enhmetafile.c */
 536 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk );
 537
 538 #define WINE_GGO_GRAY16_BITMAP 0x7f
 539
 540 #endif  /* __WINE_GDI_H */