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 { int opaque; } *PHYSDEV;  /* PHYSDEV is an opaque pointer */
  66
  67 typedef struct tagDC
  68 {
  69     GDIOBJHDR    header;
  70     HDC          hSelf;            /* Handle to this DC */
  71     const struct tagDC_FUNCS *funcs; /* DC function table */
  72     PHYSDEV      physDev;         /* Physical device (driver-specific) */
  73     INT          saveLevel;
  74     DWORD        dwHookData;
  75     FARPROC16    hookProc;         /* the original SEGPTR ... */
  76     DCHOOKPROC   hookThunk;        /* ... and the thunk to call it */
  77
  78     INT          wndOrgX;          /* Window origin */
  79     INT          wndOrgY;
  80     INT          wndExtX;          /* Window extent */
  81     INT          wndExtY;
  82     INT          vportOrgX;        /* Viewport origin */
  83     INT          vportOrgY;
  84     INT          vportExtX;        /* Viewport extent */
  85     INT          vportExtY;
  86
  87     int           flags;
  88     HRGN16        hClipRgn;     /* Clip region (may be 0) */
  89     HRGN16        hVisRgn;      /* Visible region (must never be 0) */
  90     HRGN16        hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
  91     HPEN16        hPen;
  92     HBRUSH16      hBrush;
  93     HFONT16       hFont;
  94     HBITMAP16     hBitmap;
  95     HANDLE16      hDevice;
  96     HPALETTE16    hPalette;
  97
  98     GdiFont       gdiFont;
  99     GdiPath       path;
 100
 101     WORD          ROPmode;
 102     WORD          polyFillMode;
 103     WORD          stretchBltMode;
 104     WORD          relAbsMode;
 105     WORD          backgroundMode;
 106     COLORREF      backgroundColor;
 107     COLORREF      textColor;
 108     short         brushOrgX;
 109     short         brushOrgY;
 110
 111     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 112     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
 113     short         breakTotalExtra;   /* Total extra space for justification */
 114     short         breakCount;        /* Break char. count */
 115     short         breakExtra;        /* breakTotalExtra / breakCount */
 116     short         breakRem;          /* breakTotalExtra % breakCount */
 117
 118     RECT          totalExtent;
 119     BYTE          bitsPerPixel;
 120
 121     INT           MapMode;
 122     INT           GraphicsMode;      /* Graphics mode */
 123     INT           DCOrgX;            /* DC origin */
 124     INT           DCOrgY;
 125     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 126     ABORTPROC16   pAbortProc16;
 127     INT           CursPosX;          /* Current position */
 128     INT           CursPosY;
 129     INT           ArcDirection;
 130     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 131     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 132     XFORM         xformVport2World;  /* Inverse of the above transformation */
 133     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 134 } DC;
 135
 136 /* Device functions for the Wine driver interface */
 137
 138 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEXW,LPNEWTEXTMETRICEXW,DWORD,
 139                                   LPARAM);
 140
 141 typedef struct tagDC_FUNCS
 142 {
 143     INT      (*pAbortDoc)(PHYSDEV);
 144     BOOL     (*pAbortPath)(PHYSDEV);
 145     BOOL     (*pAngleArc)(PHYSDEV,INT,INT,DWORD,FLOAT,FLOAT);
 146     BOOL     (*pArc)(PHYSDEV,INT,INT,INT,INT,INT,INT,INT,INT);
 147     BOOL     (*pArcTo)(PHYSDEV,INT,INT,INT,INT,INT,INT,INT,INT);
 148     BOOL     (*pBeginPath)(PHYSDEV);
 149     BOOL     (*pBitBlt)(PHYSDEV,INT,INT,INT,INT,PHYSDEV,INT,INT,DWORD);
 150     LONG     (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
 151     INT      (*pChoosePixelFormat)(PHYSDEV,const PIXELFORMATDESCRIPTOR *);
 152     BOOL     (*pChord)(PHYSDEV,INT,INT,INT,INT,INT,INT,INT,INT);
 153     BOOL     (*pCloseFigure)(PHYSDEV);
 154     BOOL     (*pCreateBitmap)(HBITMAP);
 155     BOOL     (*pCreateDC)(DC *,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
 156     HBITMAP  (*pCreateDIBSection)(PHYSDEV,BITMAPINFO *,UINT,LPVOID *,HANDLE,DWORD,DWORD);
 157     BOOL     (*pDeleteDC)(PHYSDEV);
 158     BOOL     (*pDeleteObject)(HGDIOBJ);
 159     INT      (*pDescribePixelFormat)(PHYSDEV,INT,UINT,PIXELFORMATDESCRIPTOR *);
 160     DWORD    (*pDeviceCapabilities)(LPSTR,LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
 161     BOOL     (*pEllipse)(PHYSDEV,INT,INT,INT,INT);
 162     INT      (*pEndDoc)(PHYSDEV);
 163     INT      (*pEndPage)(PHYSDEV);
 164     BOOL     (*pEndPath)(PHYSDEV);
 165     BOOL     (*pEnumDeviceFonts)(HDC,LPLOGFONTW,DEVICEFONTENUMPROC,LPARAM);
 166     INT      (*pExcludeClipRect)(PHYSDEV,INT,INT,INT,INT);
 167     INT      (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 168     INT      (*pExtEscape)(PHYSDEV,INT,INT,LPCVOID,INT,LPVOID);
 169     BOOL     (*pExtFloodFill)(PHYSDEV,INT,INT,COLORREF,UINT);
 170     BOOL     (*pExtTextOut)(PHYSDEV,INT,INT,UINT,const RECT*,LPCWSTR,UINT,const INT*);
 171     BOOL     (*pFillPath)(PHYSDEV);
 172     BOOL     (*pFillRgn)(PHYSDEV,HRGN,HBRUSH);
 173     BOOL     (*pFlattenPath)(PHYSDEV);
 174     BOOL     (*pFrameRgn)(PHYSDEV,HRGN,HBRUSH,INT,INT);
 175     BOOL     (*pGetCharWidth)(PHYSDEV,UINT,UINT,LPINT);
 176     BOOL     (*pGetDCOrgEx)(PHYSDEV,LPPOINT);
 177     UINT     (*pGetDIBColorTable)(PHYSDEV,UINT,UINT,RGBQUAD*);
 178     INT      (*pGetDIBits)(PHYSDEV,HBITMAP,UINT,UINT,LPVOID,BITMAPINFO*,UINT);
 179     INT      (*pGetDeviceCaps)(PHYSDEV,INT);
 180     BOOL     (*pGetDeviceGammaRamp)(PHYSDEV,LPVOID);
 181     COLORREF (*pGetPixel)(PHYSDEV,INT,INT);
 182     INT      (*pGetPixelFormat)(PHYSDEV);
 183     BOOL     (*pGetTextExtentPoint)(PHYSDEV,LPCWSTR,INT,LPSIZE);
 184     BOOL     (*pGetTextMetrics)(PHYSDEV,TEXTMETRICW*);
 185     INT      (*pIntersectClipRect)(PHYSDEV,INT,INT,INT,INT);
 186     BOOL     (*pInvertRgn)(PHYSDEV,HRGN);
 187     BOOL     (*pLineTo)(PHYSDEV,INT,INT);
 188     BOOL     (*pMoveTo)(PHYSDEV,INT,INT);
 189     INT      (*pOffsetClipRgn)(PHYSDEV,INT,INT);
 190     BOOL     (*pOffsetViewportOrg)(PHYSDEV,INT,INT);
 191     BOOL     (*pOffsetWindowOrg)(PHYSDEV,INT,INT);
 192     BOOL     (*pPaintRgn)(PHYSDEV,HRGN);
 193     BOOL     (*pPatBlt)(PHYSDEV,INT,INT,INT,INT,DWORD);
 194     BOOL     (*pPie)(PHYSDEV,INT,INT,INT,INT,INT,INT,INT,INT);
 195     BOOL     (*pPolyBezier)(PHYSDEV,const POINT*,DWORD);
 196     BOOL     (*pPolyBezierTo)(PHYSDEV,const POINT*,DWORD);
 197     BOOL     (*pPolyDraw)(PHYSDEV,const POINT*,const BYTE *,DWORD);
 198     BOOL     (*pPolyPolygon)(PHYSDEV,const POINT*,const INT*,UINT);
 199     BOOL     (*pPolyPolyline)(PHYSDEV,const POINT*,const DWORD*,DWORD);
 200     BOOL     (*pPolygon)(PHYSDEV,const POINT*,INT);
 201     BOOL     (*pPolyline)(PHYSDEV,const POINT*,INT);
 202     BOOL     (*pPolylineTo)(PHYSDEV,const POINT*,INT);
 203     UINT     (*pRealizePalette)(PHYSDEV);
 204     BOOL     (*pRectangle)(PHYSDEV,INT,INT,INT,INT);
 205     BOOL     (*pRestoreDC)(PHYSDEV,INT);
 206     BOOL     (*pRoundRect)(PHYSDEV,INT,INT,INT,INT,INT,INT);
 207     INT      (*pSaveDC)(PHYSDEV);
 208     BOOL     (*pScaleViewportExt)(PHYSDEV,INT,INT,INT,INT);
 209     BOOL     (*pScaleWindowExt)(PHYSDEV,INT,INT,INT,INT);
 210     HBITMAP  (*pSelectBitmap)(PHYSDEV,HBITMAP);
 211     HBRUSH   (*pSelectBrush)(PHYSDEV,HBRUSH);
 212     BOOL     (*pSelectClipPath)(PHYSDEV,INT);
 213     INT      (*pSelectClipRgn)(PHYSDEV,HRGN);
 214     HFONT    (*pSelectFont)(PHYSDEV,HFONT);
 215     HPALETTE (*pSelectPalette)(PHYSDEV,HPALETTE,BOOL);
 216     HPEN     (*pSelectPen)(PHYSDEV,HPEN);
 217     COLORREF (*pSetBkColor)(PHYSDEV,COLORREF);
 218     INT      (*pSetBkMode)(PHYSDEV,INT);
 219     UINT     (*pSetDIBColorTable)(PHYSDEV,UINT,UINT,const RGBQUAD*);
 220     INT      (*pSetDIBits)(PHYSDEV,HBITMAP,UINT,UINT,LPCVOID,const BITMAPINFO*,UINT);
 221     INT      (*pSetDIBitsToDevice)(PHYSDEV,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,LPCVOID,
 222                                    const BITMAPINFO*,UINT);
 223     VOID     (*pSetDeviceClipping)(PHYSDEV);
 224     BOOL     (*pSetDeviceGammaRamp)(PHYSDEV,LPVOID);
 225     INT      (*pSetMapMode)(PHYSDEV,INT);
 226     DWORD    (*pSetMapperFlags)(PHYSDEV,DWORD);
 227     COLORREF (*pSetPixel)(PHYSDEV,INT,INT,COLORREF);
 228     BOOL     (*pSetPixelFormat)(PHYSDEV,INT,const PIXELFORMATDESCRIPTOR *);
 229     INT      (*pSetPolyFillMode)(PHYSDEV,INT);
 230     INT      (*pSetROP2)(PHYSDEV,INT);
 231     INT      (*pSetRelAbs)(PHYSDEV,INT);
 232     INT      (*pSetStretchBltMode)(PHYSDEV,INT);
 233     UINT     (*pSetTextAlign)(PHYSDEV,UINT);
 234     INT      (*pSetTextCharacterExtra)(PHYSDEV,INT);
 235     DWORD    (*pSetTextColor)(PHYSDEV,DWORD);
 236     INT      (*pSetTextJustification)(PHYSDEV,INT,INT);
 237     BOOL     (*pSetViewportExt)(PHYSDEV,INT,INT);
 238     BOOL     (*pSetViewportOrg)(PHYSDEV,INT,INT);
 239     BOOL     (*pSetWindowExt)(PHYSDEV,INT,INT);
 240     BOOL     (*pSetWindowOrg)(PHYSDEV,INT,INT);
 241     INT      (*pStartDoc)(PHYSDEV,const DOCINFOA*);
 242     INT      (*pStartPage)(PHYSDEV);
 243     BOOL     (*pStretchBlt)(PHYSDEV,INT,INT,INT,INT,PHYSDEV,INT,INT,INT,INT,DWORD);
 244     INT      (*pStretchDIBits)(PHYSDEV,INT,INT,INT,INT,INT,INT,INT,INT,const void *,
 245                                const BITMAPINFO*,UINT,DWORD);
 246     BOOL     (*pStrokeAndFillPath)(PHYSDEV);
 247     BOOL     (*pStrokePath)(PHYSDEV);
 248     BOOL     (*pSwapBuffers)(PHYSDEV);
 249     BOOL     (*pWidenPath)(PHYSDEV);
 250 } DC_FUNCTIONS;
 251
 252   /* DC hook codes */
 253 #define DCHC_INVALIDVISRGN      0x0001
 254 #define DCHC_DELETEDC           0x0002
 255
 256 #define DCHF_INVALIDATEVISRGN   0x0001
 257 #define DCHF_VALIDATEVISRGN     0x0002
 258
 259   /* DC flags */
 260 #define DC_MEMORY     0x0001   /* It is a memory DC */
 261 #define DC_SAVED      0x0002   /* It is a saved DC */
 262 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 263 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 264
 265 #define GDI_HEAP_SIZE 0xffe0
 266
 267 /* extra stock object: default 1x1 bitmap for memory DCs */
 268 #define DEFAULT_BITMAP (STOCK_LAST+1)
 269
 270   /* Device <-> logical coords conversion */
 271
 272 /* A floating point version of the POINT structure */
 273 typedef struct tagFLOAT_POINT
 274 {
 275    FLOAT x, y;
 276 } FLOAT_POINT;
 277
 278 /* Rounds a floating point number to integer. The world-to-viewport
 279  * transformation process is done in floating point internally. This function
 280  * is then used to round these coordinates to integer values.
 281  */
 282 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 283 {
 284    return (int)floor(val + 0.5);
 285 }
 286
 287 /* Performs a viewport-to-world transformation on the specified point (which
 288  * is in floating point format). Returns TRUE if successful, else FALSE.
 289  */
 290 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 291 {
 292     FLOAT x, y;
 293
 294     /* Check that the viewport-to-world transformation is valid */
 295     if (!dc->vport2WorldValid)
 296         return FALSE;
 297
 298     /* Perform the transformation */
 299     x = point->x;
 300     y = point->y;
 301     point->x = x * dc->xformVport2World.eM11 +
 302                y * dc->xformVport2World.eM21 +
 303                dc->xformVport2World.eDx;
 304     point->y = x * dc->xformVport2World.eM12 +
 305                y * dc->xformVport2World.eM22 +
 306                dc->xformVport2World.eDy;
 307
 308     return TRUE;
 309 }
 310
 311 /* Performs a viewport-to-world transformation on the specified point (which
 312  * is in integer format). Returns TRUE if successful, else FALSE.
 313  */
 314 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 315 {
 316     FLOAT_POINT floatPoint;
 317
 318     /* Perform operation with floating point */
 319     floatPoint.x=(FLOAT)point->x;
 320     floatPoint.y=(FLOAT)point->y;
 321     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 322         return FALSE;
 323
 324     /* Round to integers */
 325     point->x = GDI_ROUND(floatPoint.x);
 326     point->y = GDI_ROUND(floatPoint.y);
 327
 328     return TRUE;
 329 }
 330
 331 /* Performs a world-to-viewport transformation on the specified point (which
 332  * is in floating point format).
 333  */
 334 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 335 {
 336     FLOAT x, y;
 337
 338     /* Perform the transformation */
 339     x = point->x;
 340     y = point->y;
 341     point->x = x * dc->xformWorld2Vport.eM11 +
 342                y * dc->xformWorld2Vport.eM21 +
 343                dc->xformWorld2Vport.eDx;
 344     point->y = x * dc->xformWorld2Vport.eM12 +
 345                y * dc->xformWorld2Vport.eM22 +
 346                dc->xformWorld2Vport.eDy;
 347 }
 348
 349 /* Performs a world-to-viewport transformation on the specified point (which
 350  * is in integer format).
 351  */
 352 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 353 {
 354     FLOAT_POINT floatPoint;
 355
 356     /* Perform operation with floating point */
 357     floatPoint.x=(FLOAT)point->x;
 358     floatPoint.y=(FLOAT)point->y;
 359     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 360
 361     /* Round to integers */
 362     point->x = GDI_ROUND(floatPoint.x);
 363     point->y = GDI_ROUND(floatPoint.y);
 364 }
 365
 366
 367 /* Performs a world-to-viewport transformation on the specified point (which
 368  * is in integer format).
 369  */
 370 static inline INT WINE_UNUSED INTERNAL_XWPTODP(DC *dc, INT x, INT y)
 371 {
 372     FLOAT_POINT floatPoint;
 373
 374     /* Perform operation with floating point */
 375     floatPoint.x=(FLOAT)x;
 376     floatPoint.y=(FLOAT)y;
 377     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 378
 379     /* Round to integers */
 380     return GDI_ROUND(floatPoint.x);
 381 }
 382
 383 /* Performs a world-to-viewport transformation on the specified point (which
 384  * is in integer format).
 385  */
 386 static inline INT WINE_UNUSED INTERNAL_YWPTODP(DC *dc, INT x, INT y)
 387 {
 388     FLOAT_POINT floatPoint;
 389
 390     /* Perform operation with floating point */
 391     floatPoint.x=(FLOAT)x;
 392     floatPoint.y=(FLOAT)y;
 393     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 394
 395     /* Round to integers */
 396     return GDI_ROUND(floatPoint.y);
 397 }
 398
 399
 400 /* Performs a viewport-to-world transformation on the specified point (which
 401  * is in integer format).
 402  */
 403 static inline INT WINE_UNUSED INTERNAL_XDPTOWP(DC *dc, INT x, INT y)
 404 {
 405     FLOAT_POINT floatPoint;
 406
 407     /* Perform operation with floating point */
 408     floatPoint.x=(FLOAT)x;
 409     floatPoint.y=(FLOAT)y;
 410     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 411
 412     /* Round to integers */
 413     return GDI_ROUND(floatPoint.x);
 414 }
 415
 416 /* Performs a viewport-to-world transformation on the specified point (which
 417  * is in integer format).
 418  */
 419 static inline INT WINE_UNUSED INTERNAL_YDPTOWP(DC *dc, INT x, INT y)
 420 {
 421     FLOAT_POINT floatPoint;
 422
 423     /* Perform operation with floating point */
 424     floatPoint.x=(FLOAT)x;
 425     floatPoint.y=(FLOAT)y;
 426     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 427
 428     /* Round to integers */
 429     return GDI_ROUND(floatPoint.y);
 430 }
 431
 432
 433 #define XDPTOLP(dc,x) \
 434     (MulDiv(((x)-(dc)->vportOrgX), (dc)->wndExtX, (dc)->vportExtX) + (dc)->wndOrgX)
 435 #define YDPTOLP(dc,y) \
 436     (MulDiv(((y)-(dc)->vportOrgY), (dc)->wndExtY, (dc)->vportExtY) + (dc)->wndOrgY)
 437 #define XLPTODP(dc,x) \
 438     (MulDiv(((x)-(dc)->wndOrgX), (dc)->vportExtX, (dc)->wndExtX) + (dc)->vportOrgX)
 439 #define YLPTODP(dc,y) \
 440     (MulDiv(((y)-(dc)->wndOrgY), (dc)->vportExtY, (dc)->wndExtY) + (dc)->vportOrgY)
 441
 442
 443
 444   /* World -> Device size conversion */
 445
 446 /* Performs a world-to-viewport transformation on the specified width (which
 447  * is in floating point format).
 448  */
 449 static inline void WINE_UNUSED INTERNAL_XWSTODS_FLOAT(DC *dc, FLOAT *width)
 450 {
 451     /* Perform the transformation */
 452     *width = *width * dc->xformWorld2Vport.eM11;
 453 }
 454
 455 /* Performs a world-to-viewport transformation on the specified width (which
 456  * is in integer format).
 457  */
 458 static inline INT WINE_UNUSED INTERNAL_XWSTODS(DC *dc, INT width)
 459 {
 460     FLOAT floatWidth;
 461
 462     /* Perform operation with floating point */
 463     floatWidth = (FLOAT)width;
 464     INTERNAL_XWSTODS_FLOAT(dc, &floatWidth);
 465
 466     /* Round to integers */
 467     return GDI_ROUND(floatWidth);
 468 }
 469
 470
 471 /* Performs a world-to-viewport transformation on the specified size (which
 472  * is in floating point format).
 473  */
 474 static inline void WINE_UNUSED INTERNAL_YWSTODS_FLOAT(DC *dc, FLOAT *height)
 475 {
 476     /* Perform the transformation */
 477     *height = *height * dc->xformWorld2Vport.eM22;
 478 }
 479
 480 /* Performs a world-to-viewport transformation on the specified size (which
 481  * is in integer format).
 482  */
 483 static inline INT WINE_UNUSED INTERNAL_YWSTODS(DC *dc, INT height)
 484 {
 485     FLOAT floatHeight;
 486
 487     /* Perform operation with floating point */
 488     floatHeight = (FLOAT)height;
 489     INTERNAL_YWSTODS_FLOAT(dc, &floatHeight);
 490
 491     /* Round to integers */
 492     return GDI_ROUND(floatHeight);
 493 }
 494
 495
 496   /* Device <-> logical size conversion */
 497
 498 #define XDSTOLS(dc,x) \
 499     MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
 500 #define YDSTOLS(dc,y) \
 501     MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
 502 #define XLSTODS(dc,x) \
 503     MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
 504 #define YLSTODS(dc,y) \
 505     MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
 506
 507   /* GDI local heap */
 508
 509 extern BOOL GDI_Init(void);
 510 extern void *GDI_AllocObject( WORD, WORD, HGDIOBJ * );
 511 extern void *GDI_ReallocObject( WORD, HGDIOBJ, void *obj );
 512 extern BOOL GDI_FreeObject( HGDIOBJ, void *obj );
 513 extern void *GDI_GetObjPtr( HGDIOBJ, WORD );
 514 extern void GDI_ReleaseObj( HGDIOBJ );
 515 extern void GDI_CheckNotLock(void);
 516
 517 extern const DC_FUNCTIONS *DRIVER_load_driver( LPCSTR name );
 518 extern const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs );
 519 extern void DRIVER_release_driver( const DC_FUNCTIONS *funcs );
 520 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 521
 522 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut );
 523
 524 extern DC * DC_AllocDC( const DC_FUNCTIONS *funcs );
 525 extern DC * DC_GetDCPtr( HDC hdc );
 526 extern DC * DC_GetDCUpdate( HDC hdc );
 527 extern void DC_InitDC( DC * dc );
 528 extern void DC_UpdateXforms( DC * dc );
 529
 530
 531 #define CLIP_INTERSECT 0x0001
 532 #define CLIP_EXCLUDE   0x0002
 533 #define CLIP_KEEPRGN   0x0004
 534
 535 /* objects/clipping.c */
 536 INT CLIPPING_IntersectClipRect( DC * dc, INT left, INT top,
 537                                 INT right, INT bottom, UINT flags );
 538 INT CLIPPING_IntersectVisRect( DC * dc, INT left, INT top,
 539                                INT right, INT bottom, BOOL exclude );
 540 extern void CLIPPING_UpdateGCRegion( DC * dc );
 541
 542 /* objects/enhmetafile.c */
 543 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk );
 544
 545 #define WINE_GGO_GRAY16_BITMAP 0x7f
 546
 547 #endif  /* __WINE_GDI_H */