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)(PHYSDEV,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     HDC      (*pResetDC)(PHYSDEV,const DEVMODEA*);
 206     BOOL     (*pRestoreDC)(PHYSDEV,INT);
 207     BOOL     (*pRoundRect)(PHYSDEV,INT,INT,INT,INT,INT,INT);
 208     INT      (*pSaveDC)(PHYSDEV);
 209     BOOL     (*pScaleViewportExt)(PHYSDEV,INT,INT,INT,INT);
 210     BOOL     (*pScaleWindowExt)(PHYSDEV,INT,INT,INT,INT);
 211     HBITMAP  (*pSelectBitmap)(PHYSDEV,HBITMAP);
 212     HBRUSH   (*pSelectBrush)(PHYSDEV,HBRUSH);
 213     BOOL     (*pSelectClipPath)(PHYSDEV,INT);
 214     INT      (*pSelectClipRgn)(PHYSDEV,HRGN);
 215     HFONT    (*pSelectFont)(PHYSDEV,HFONT);
 216     HPALETTE (*pSelectPalette)(PHYSDEV,HPALETTE,BOOL);
 217     HPEN     (*pSelectPen)(PHYSDEV,HPEN);
 218     COLORREF (*pSetBkColor)(PHYSDEV,COLORREF);
 219     INT      (*pSetBkMode)(PHYSDEV,INT);
 220     UINT     (*pSetDIBColorTable)(PHYSDEV,UINT,UINT,const RGBQUAD*);
 221     INT      (*pSetDIBits)(PHYSDEV,HBITMAP,UINT,UINT,LPCVOID,const BITMAPINFO*,UINT);
 222     INT      (*pSetDIBitsToDevice)(PHYSDEV,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,LPCVOID,
 223                                    const BITMAPINFO*,UINT);
 224     VOID     (*pSetDeviceClipping)(PHYSDEV,HRGN);
 225     BOOL     (*pSetDeviceGammaRamp)(PHYSDEV,LPVOID);
 226     INT      (*pSetMapMode)(PHYSDEV,INT);
 227     DWORD    (*pSetMapperFlags)(PHYSDEV,DWORD);
 228     COLORREF (*pSetPixel)(PHYSDEV,INT,INT,COLORREF);
 229     BOOL     (*pSetPixelFormat)(PHYSDEV,INT,const PIXELFORMATDESCRIPTOR *);
 230     INT      (*pSetPolyFillMode)(PHYSDEV,INT);
 231     INT      (*pSetROP2)(PHYSDEV,INT);
 232     INT      (*pSetRelAbs)(PHYSDEV,INT);
 233     INT      (*pSetStretchBltMode)(PHYSDEV,INT);
 234     UINT     (*pSetTextAlign)(PHYSDEV,UINT);
 235     INT      (*pSetTextCharacterExtra)(PHYSDEV,INT);
 236     DWORD    (*pSetTextColor)(PHYSDEV,DWORD);
 237     INT      (*pSetTextJustification)(PHYSDEV,INT,INT);
 238     BOOL     (*pSetViewportExt)(PHYSDEV,INT,INT);
 239     BOOL     (*pSetViewportOrg)(PHYSDEV,INT,INT);
 240     BOOL     (*pSetWindowExt)(PHYSDEV,INT,INT);
 241     BOOL     (*pSetWindowOrg)(PHYSDEV,INT,INT);
 242     INT      (*pStartDoc)(PHYSDEV,const DOCINFOA*);
 243     INT      (*pStartPage)(PHYSDEV);
 244     BOOL     (*pStretchBlt)(PHYSDEV,INT,INT,INT,INT,PHYSDEV,INT,INT,INT,INT,DWORD);
 245     INT      (*pStretchDIBits)(PHYSDEV,INT,INT,INT,INT,INT,INT,INT,INT,const void *,
 246                                const BITMAPINFO*,UINT,DWORD);
 247     BOOL     (*pStrokeAndFillPath)(PHYSDEV);
 248     BOOL     (*pStrokePath)(PHYSDEV);
 249     BOOL     (*pSwapBuffers)(PHYSDEV);
 250     BOOL     (*pWidenPath)(PHYSDEV);
 251 } DC_FUNCTIONS;
 252
 253   /* DC hook codes */
 254 #define DCHC_INVALIDVISRGN      0x0001
 255 #define DCHC_DELETEDC           0x0002
 256
 257 #define DCHF_INVALIDATEVISRGN   0x0001
 258 #define DCHF_VALIDATEVISRGN     0x0002
 259
 260   /* DC flags */
 261 #define DC_MEMORY     0x0001   /* It is a memory DC */
 262 #define DC_SAVED      0x0002   /* It is a saved DC */
 263 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 264 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 265
 266 #define GDI_HEAP_SIZE 0xffe0
 267
 268 /* extra stock object: default 1x1 bitmap for memory DCs */
 269 #define DEFAULT_BITMAP (STOCK_LAST+1)
 270
 271   /* Device <-> logical coords conversion */
 272
 273 /* A floating point version of the POINT structure */
 274 typedef struct tagFLOAT_POINT
 275 {
 276    FLOAT x, y;
 277 } FLOAT_POINT;
 278
 279 /* Rounds a floating point number to integer. The world-to-viewport
 280  * transformation process is done in floating point internally. This function
 281  * is then used to round these coordinates to integer values.
 282  */
 283 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 284 {
 285    return (int)floor(val + 0.5);
 286 }
 287
 288 /* Performs a viewport-to-world transformation on the specified point (which
 289  * is in floating point format). Returns TRUE if successful, else FALSE.
 290  */
 291 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 292 {
 293     FLOAT x, y;
 294
 295     /* Check that the viewport-to-world transformation is valid */
 296     if (!dc->vport2WorldValid)
 297         return FALSE;
 298
 299     /* Perform the transformation */
 300     x = point->x;
 301     y = point->y;
 302     point->x = x * dc->xformVport2World.eM11 +
 303                y * dc->xformVport2World.eM21 +
 304                dc->xformVport2World.eDx;
 305     point->y = x * dc->xformVport2World.eM12 +
 306                y * dc->xformVport2World.eM22 +
 307                dc->xformVport2World.eDy;
 308
 309     return TRUE;
 310 }
 311
 312 /* Performs a viewport-to-world transformation on the specified point (which
 313  * is in integer format). Returns TRUE if successful, else FALSE.
 314  */
 315 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 316 {
 317     FLOAT_POINT floatPoint;
 318
 319     /* Perform operation with floating point */
 320     floatPoint.x=(FLOAT)point->x;
 321     floatPoint.y=(FLOAT)point->y;
 322     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 323         return FALSE;
 324
 325     /* Round to integers */
 326     point->x = GDI_ROUND(floatPoint.x);
 327     point->y = GDI_ROUND(floatPoint.y);
 328
 329     return TRUE;
 330 }
 331
 332 /* Performs a world-to-viewport transformation on the specified point (which
 333  * is in floating point format).
 334  */
 335 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 336 {
 337     FLOAT x, y;
 338
 339     /* Perform the transformation */
 340     x = point->x;
 341     y = point->y;
 342     point->x = x * dc->xformWorld2Vport.eM11 +
 343                y * dc->xformWorld2Vport.eM21 +
 344                dc->xformWorld2Vport.eDx;
 345     point->y = x * dc->xformWorld2Vport.eM12 +
 346                y * dc->xformWorld2Vport.eM22 +
 347                dc->xformWorld2Vport.eDy;
 348 }
 349
 350 /* Performs a world-to-viewport transformation on the specified point (which
 351  * is in integer format).
 352  */
 353 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 354 {
 355     FLOAT_POINT floatPoint;
 356
 357     /* Perform operation with floating point */
 358     floatPoint.x=(FLOAT)point->x;
 359     floatPoint.y=(FLOAT)point->y;
 360     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 361
 362     /* Round to integers */
 363     point->x = GDI_ROUND(floatPoint.x);
 364     point->y = GDI_ROUND(floatPoint.y);
 365 }
 366
 367
 368 /* Performs a world-to-viewport transformation on the specified point (which
 369  * is in integer format).
 370  */
 371 static inline INT WINE_UNUSED INTERNAL_XWPTODP(DC *dc, INT x, INT y)
 372 {
 373     FLOAT_POINT floatPoint;
 374
 375     /* Perform operation with floating point */
 376     floatPoint.x=(FLOAT)x;
 377     floatPoint.y=(FLOAT)y;
 378     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 379
 380     /* Round to integers */
 381     return GDI_ROUND(floatPoint.x);
 382 }
 383
 384 /* Performs a world-to-viewport transformation on the specified point (which
 385  * is in integer format).
 386  */
 387 static inline INT WINE_UNUSED INTERNAL_YWPTODP(DC *dc, INT x, INT y)
 388 {
 389     FLOAT_POINT floatPoint;
 390
 391     /* Perform operation with floating point */
 392     floatPoint.x=(FLOAT)x;
 393     floatPoint.y=(FLOAT)y;
 394     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 395
 396     /* Round to integers */
 397     return GDI_ROUND(floatPoint.y);
 398 }
 399
 400
 401 /* Performs a viewport-to-world transformation on the specified point (which
 402  * is in integer format).
 403  */
 404 static inline INT WINE_UNUSED INTERNAL_XDPTOWP(DC *dc, INT x, INT y)
 405 {
 406     FLOAT_POINT floatPoint;
 407
 408     /* Perform operation with floating point */
 409     floatPoint.x=(FLOAT)x;
 410     floatPoint.y=(FLOAT)y;
 411     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 412
 413     /* Round to integers */
 414     return GDI_ROUND(floatPoint.x);
 415 }
 416
 417 /* Performs a viewport-to-world transformation on the specified point (which
 418  * is in integer format).
 419  */
 420 static inline INT WINE_UNUSED INTERNAL_YDPTOWP(DC *dc, INT x, INT y)
 421 {
 422     FLOAT_POINT floatPoint;
 423
 424     /* Perform operation with floating point */
 425     floatPoint.x=(FLOAT)x;
 426     floatPoint.y=(FLOAT)y;
 427     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 428
 429     /* Round to integers */
 430     return GDI_ROUND(floatPoint.y);
 431 }
 432
 433
 434 #define XDPTOLP(dc,x) \
 435     (MulDiv(((x)-(dc)->vportOrgX), (dc)->wndExtX, (dc)->vportExtX) + (dc)->wndOrgX)
 436 #define YDPTOLP(dc,y) \
 437     (MulDiv(((y)-(dc)->vportOrgY), (dc)->wndExtY, (dc)->vportExtY) + (dc)->wndOrgY)
 438 #define XLPTODP(dc,x) \
 439     (MulDiv(((x)-(dc)->wndOrgX), (dc)->vportExtX, (dc)->wndExtX) + (dc)->vportOrgX)
 440 #define YLPTODP(dc,y) \
 441     (MulDiv(((y)-(dc)->wndOrgY), (dc)->vportExtY, (dc)->wndExtY) + (dc)->vportOrgY)
 442
 443
 444
 445   /* World -> Device size conversion */
 446
 447 /* Performs a world-to-viewport transformation on the specified width (which
 448  * is in floating point format).
 449  */
 450 static inline void WINE_UNUSED INTERNAL_XWSTODS_FLOAT(DC *dc, FLOAT *width)
 451 {
 452     /* Perform the transformation */
 453     *width = *width * dc->xformWorld2Vport.eM11;
 454 }
 455
 456 /* Performs a world-to-viewport transformation on the specified width (which
 457  * is in integer format).
 458  */
 459 static inline INT WINE_UNUSED INTERNAL_XWSTODS(DC *dc, INT width)
 460 {
 461     FLOAT floatWidth;
 462
 463     /* Perform operation with floating point */
 464     floatWidth = (FLOAT)width;
 465     INTERNAL_XWSTODS_FLOAT(dc, &floatWidth);
 466
 467     /* Round to integers */
 468     return GDI_ROUND(floatWidth);
 469 }
 470
 471
 472 /* Performs a world-to-viewport transformation on the specified size (which
 473  * is in floating point format).
 474  */
 475 static inline void WINE_UNUSED INTERNAL_YWSTODS_FLOAT(DC *dc, FLOAT *height)
 476 {
 477     /* Perform the transformation */
 478     *height = *height * dc->xformWorld2Vport.eM22;
 479 }
 480
 481 /* Performs a world-to-viewport transformation on the specified size (which
 482  * is in integer format).
 483  */
 484 static inline INT WINE_UNUSED INTERNAL_YWSTODS(DC *dc, INT height)
 485 {
 486     FLOAT floatHeight;
 487
 488     /* Perform operation with floating point */
 489     floatHeight = (FLOAT)height;
 490     INTERNAL_YWSTODS_FLOAT(dc, &floatHeight);
 491
 492     /* Round to integers */
 493     return GDI_ROUND(floatHeight);
 494 }
 495
 496
 497   /* Device -> World size conversion */
 498
 499 /* Performs a device to world transformation on the specified width (which
 500  * is in floating point format).
 501  */
 502 static inline void INTERNAL_XDSTOWS_FLOAT(DC *dc, FLOAT *width)
 503 {
 504     /* Perform the transformation */
 505     *width = *width * dc->xformVport2World.eM11;
 506 }
 507
 508 /* Performs a device to world transformation on the specified width (which
 509  * is in integer format).
 510  */
 511 static inline INT INTERNAL_XDSTOWS(DC *dc, INT width)
 512 {
 513     FLOAT floatWidth;
 514
 515     /* Perform operation with floating point */
 516     floatWidth = (FLOAT)width;
 517     INTERNAL_XDSTOWS_FLOAT(dc, &floatWidth);
 518
 519     /* Round to integers */
 520     return GDI_ROUND(floatWidth);
 521 }
 522
 523
 524 /* Performs a device to world transformation on the specified size (which
 525  * is in floating point format).
 526  */
 527 static inline void INTERNAL_YDSTOWS_FLOAT(DC *dc, FLOAT *height)
 528 {
 529     /* Perform the transformation */
 530     *height = *height * dc->xformVport2World.eM22;
 531 }
 532
 533 /* Performs a device to world transformation on the specified size (which
 534  * is in integer format).
 535  */
 536 static inline INT INTERNAL_YDSTOWS(DC *dc, INT height)
 537 {
 538     FLOAT floatHeight;
 539
 540     /* Perform operation with floating point */
 541     floatHeight = (FLOAT)height;
 542     INTERNAL_YDSTOWS_FLOAT(dc, &floatHeight);
 543
 544     /* Round to integers */
 545     return GDI_ROUND(floatHeight);
 546 }
 547
 548
 549   /* Device <-> logical size conversion */
 550
 551 #define XDSTOLS(dc,x) \
 552     MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
 553 #define YDSTOLS(dc,y) \
 554     MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
 555 #define XLSTODS(dc,x) \
 556     MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
 557 #define YLSTODS(dc,y) \
 558     MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
 559
 560   /* GDI local heap */
 561
 562 extern BOOL GDI_Init(void);
 563 extern void *GDI_AllocObject( WORD, WORD, HGDIOBJ * );
 564 extern void *GDI_ReallocObject( WORD, HGDIOBJ, void *obj );
 565 extern BOOL GDI_FreeObject( HGDIOBJ, void *obj );
 566 extern void *GDI_GetObjPtr( HGDIOBJ, WORD );
 567 extern void GDI_ReleaseObj( HGDIOBJ );
 568 extern void GDI_CheckNotLock(void);
 569
 570 extern const DC_FUNCTIONS *DRIVER_load_driver( LPCSTR name );
 571 extern const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs );
 572 extern void DRIVER_release_driver( const DC_FUNCTIONS *funcs );
 573 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 574
 575 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut );
 576
 577 extern DC * DC_AllocDC( const DC_FUNCTIONS *funcs );
 578 extern DC * DC_GetDCPtr( HDC hdc );
 579 extern DC * DC_GetDCUpdate( HDC hdc );
 580 extern void DC_InitDC( DC * dc );
 581 extern void DC_UpdateXforms( DC * dc );
 582
 583
 584 #define CLIP_INTERSECT 0x0001
 585 #define CLIP_EXCLUDE   0x0002
 586 #define CLIP_KEEPRGN   0x0004
 587
 588 /* objects/clipping.c */
 589 INT CLIPPING_IntersectClipRect( DC * dc, INT left, INT top,
 590                                 INT right, INT bottom, UINT flags );
 591 INT CLIPPING_IntersectVisRect( DC * dc, INT left, INT top,
 592                                INT right, INT bottom, BOOL exclude );
 593 extern void CLIPPING_UpdateGCRegion( DC * dc );
 594
 595 /* objects/enhmetafile.c */
 596 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk );
 597
 598 #define WINE_GGO_GRAY16_BITMAP 0x7f
 599
 600 #endif  /* __WINE_GDI_H */