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 "path.h"
  16 #include <math.h>
  17
  18   /* GDI objects magic numbers */
  19 #define FIRST_MAGIC           0x4f47
  20 #define PEN_MAGIC             0x4f47
  21 #define BRUSH_MAGIC           0x4f48
  22 #define FONT_MAGIC            0x4f49
  23 #define PALETTE_MAGIC         0x4f4a
  24 #define BITMAP_MAGIC          0x4f4b
  25 #define REGION_MAGIC          0x4f4c
  26 #define DC_MAGIC              0x4f4d
  27 #define DISABLED_DC_MAGIC     0x4f4e
  28 #define META_DC_MAGIC         0x4f4f
  29 #define METAFILE_MAGIC        0x4f50
  30 #define METAFILE_DC_MAGIC     0x4f51
  31 #define ENHMETAFILE_MAGIC     0x4f52
  32 #define ENHMETAFILE_DC_MAGIC  0x4f53
  33 #define LAST_MAGIC            0x4f53
  34
  35 #define MAGIC_DONTCARE        0xffff
  36
  37 /* GDI constants for making objects private/system (naming undoc. !) */
  38 #define OBJECT_PRIVATE        0x2000
  39 #define OBJECT_NOSYSTEM       0x8000
  40
  41 #define GDIMAGIC(magic) ((magic) & ~(OBJECT_PRIVATE|OBJECT_NOSYSTEM))
  42
  43 typedef struct tagGDIOBJHDR
  44 {
  45     HANDLE16    hNext;
  46     WORD        wMagic;
  47     DWORD       dwCount;
  48 } GDIOBJHDR;
  49
  50
  51 typedef BOOL16 CALLBACK (*DCHOOKPROC)(HDC16,WORD,DWORD,LPARAM);
  52
  53 typedef struct tagDC
  54 {
  55     GDIOBJHDR    header;
  56     HDC          hSelf;            /* Handle to this DC */
  57     const struct tagDC_FUNCS *funcs; /* DC function table */
  58     void         *physDev;         /* Physical device (driver-specific) */
  59     INT          saveLevel;
  60     DWORD        dwHookData;
  61     FARPROC16    hookProc;         /* the original SEGPTR ... */
  62     DCHOOKPROC   hookThunk;        /* ... and the thunk to call it */
  63
  64     INT          wndOrgX;          /* Window origin */
  65     INT          wndOrgY;
  66     INT          wndExtX;          /* Window extent */
  67     INT          wndExtY;
  68     INT          vportOrgX;        /* Viewport origin */
  69     INT          vportOrgY;
  70     INT          vportExtX;        /* Viewport extent */
  71     INT          vportExtY;
  72
  73     int           flags;
  74     HRGN16        hClipRgn;     /* Clip region (may be 0) */
  75     HRGN16        hVisRgn;      /* Visible region (must never be 0) */
  76     HRGN16        hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
  77     HPEN16        hPen;
  78     HBRUSH16      hBrush;
  79     HFONT16       hFont;
  80     HBITMAP16     hBitmap;
  81     HANDLE16      hDevice;
  82     HPALETTE16    hPalette;
  83
  84     GdiPath       path;
  85
  86     WORD          ROPmode;
  87     WORD          polyFillMode;
  88     WORD          stretchBltMode;
  89     WORD          relAbsMode;
  90     WORD          backgroundMode;
  91     COLORREF      backgroundColor;
  92     COLORREF      textColor;
  93     short         brushOrgX;
  94     short         brushOrgY;
  95
  96     WORD          textAlign;         /* Text alignment from SetTextAlign() */
  97     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
  98     short         breakTotalExtra;   /* Total extra space for justification */
  99     short         breakCount;        /* Break char. count */
 100     short         breakExtra;        /* breakTotalExtra / breakCount */
 101     short         breakRem;          /* breakTotalExtra % breakCount */
 102
 103     RECT          totalExtent;
 104     BYTE          bitsPerPixel;
 105
 106     INT           MapMode;
 107     INT           GraphicsMode;      /* Graphics mode */
 108     INT           DCOrgX;            /* DC origin */
 109     INT           DCOrgY;
 110     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 111     INT           CursPosX;          /* Current position */
 112     INT           CursPosY;
 113     INT           ArcDirection;
 114     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 115     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 116     XFORM         xformVport2World;  /* Inverse of the above transformation */
 117     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 118 } DC;
 119
 120 /* Device functions for the Wine driver interface */
 121
 122 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEXW,LPNEWTEXTMETRICEXW,DWORD,
 123                                   LPARAM);
 124
 125 typedef struct tagDC_FUNCS
 126 {
 127     INT      (*pAbortDoc)(DC*);
 128     BOOL     (*pAbortPath)(DC*);
 129     BOOL     (*pAngleArc)(DC*,INT,INT,DWORD,FLOAT,FLOAT);
 130     BOOL     (*pArc)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 131     BOOL     (*pArcTo)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 132     BOOL     (*pBeginPath)(DC*);
 133     BOOL     (*pBitBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,DWORD);
 134     LONG     (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
 135     INT      (*pChoosePixelFormat)(DC*,const PIXELFORMATDESCRIPTOR *);
 136     BOOL     (*pChord)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 137     BOOL     (*pCloseFigure)(DC*);
 138     BOOL     (*pCreateBitmap)(HBITMAP);
 139     BOOL     (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
 140     HBITMAP  (*pCreateDIBSection)(DC *,BITMAPINFO *,UINT,LPVOID *,HANDLE,
 141                                   DWORD,DWORD);
 142     BOOL     (*pDeleteDC)(DC*);
 143     BOOL     (*pDeleteObject)(HGDIOBJ);
 144     INT      (*pDescribePixelFormat)(DC *,INT,UINT,PIXELFORMATDESCRIPTOR *);
 145     DWORD    (*pDeviceCapabilities)(LPSTR,LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
 146     BOOL     (*pEllipse)(DC*,INT,INT,INT,INT);
 147     INT      (*pEndDoc)(DC*);
 148     INT      (*pEndPage)(DC*);
 149     BOOL     (*pEndPath)(DC*);
 150     BOOL     (*pEnumDeviceFonts)(HDC,LPLOGFONTW,DEVICEFONTENUMPROC,LPARAM);
 151     INT      (*pExcludeClipRect)(DC*,INT,INT,INT,INT);
 152     INT      (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 153     INT      (*pExtEscape)(DC*,INT,INT,LPCVOID,INT,LPVOID);
 154     BOOL     (*pExtFloodFill)(DC*,INT,INT,COLORREF,UINT);
 155     BOOL     (*pExtTextOut)(DC*,INT,INT,UINT,const RECT*,LPCWSTR,UINT,
 156                             const INT*);
 157     BOOL     (*pFillPath)(DC*);
 158     BOOL     (*pFillRgn)(DC*,HRGN,HBRUSH);
 159     BOOL     (*pFlattenPath)(DC*);
 160     BOOL     (*pFrameRgn)(DC*,HRGN,HBRUSH,INT,INT);
 161     BOOL     (*pGetCharWidth)(DC*,UINT,UINT,LPINT);
 162     BOOL     (*pGetDCOrgEx)(DC*,LPPOINT);
 163     INT      (*pGetDeviceCaps)(DC*,INT);
 164     BOOL     (*pGetDeviceGammaRamp)(DC*,LPVOID);
 165     COLORREF (*pGetPixel)(DC*,INT,INT);
 166     INT      (*pGetPixelFormat)(DC*);
 167     BOOL     (*pGetTextExtentPoint)(DC*,LPCWSTR,INT,LPSIZE);
 168     BOOL     (*pGetTextMetrics)(DC*,TEXTMETRICW*);
 169     INT      (*pIntersectClipRect)(DC*,INT,INT,INT,INT);
 170     BOOL     (*pInvertRgn)(DC*,HRGN);
 171     BOOL     (*pLineTo)(DC*,INT,INT);
 172     BOOL     (*pMoveTo)(DC*,INT,INT);
 173     INT      (*pOffsetClipRgn)(DC*,INT,INT);
 174     BOOL     (*pOffsetViewportOrg)(DC*,INT,INT);
 175     BOOL     (*pOffsetWindowOrg)(DC*,INT,INT);
 176     BOOL     (*pPaintRgn)(DC*,HRGN);
 177     BOOL     (*pPatBlt)(DC*,INT,INT,INT,INT,DWORD);
 178     BOOL     (*pPie)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 179     BOOL     (*pPolyBezier)(DC*,const POINT*,DWORD);
 180     BOOL     (*pPolyBezierTo)(DC*,const POINT*,DWORD);
 181     BOOL     (*pPolyDraw)(DC*,const POINT*,const BYTE *,DWORD);
 182     BOOL     (*pPolyPolygon)(DC*,const POINT*,const INT*,UINT);
 183     BOOL     (*pPolyPolyline)(DC*,const POINT*,const DWORD*,DWORD);
 184     BOOL     (*pPolygon)(DC*,const POINT*,INT);
 185     BOOL     (*pPolyline)(DC*,const POINT*,INT);
 186     BOOL     (*pPolylineTo)(DC*,const POINT*,INT);
 187     UINT     (*pRealizePalette)(DC*);
 188     BOOL     (*pRectangle)(DC*,INT,INT,INT,INT);
 189     BOOL     (*pRestoreDC)(DC*,INT);
 190     BOOL     (*pRoundRect)(DC*,INT,INT,INT,INT,INT,INT);
 191     INT      (*pSaveDC)(DC*);
 192     BOOL     (*pScaleViewportExt)(DC*,INT,INT,INT,INT);
 193     BOOL     (*pScaleWindowExt)(DC*,INT,INT,INT,INT);
 194     BOOL     (*pSelectClipPath)(DC*,INT);
 195     INT      (*pSelectClipRgn)(DC*,HRGN);
 196     HANDLE   (*pSelectObject)(DC*,HANDLE);
 197     HPALETTE (*pSelectPalette)(DC*,HPALETTE,BOOL);
 198     COLORREF (*pSetBkColor)(DC*,COLORREF);
 199     INT      (*pSetBkMode)(DC*,INT);
 200     VOID     (*pSetDeviceClipping)(DC*);
 201     BOOL     (*pSetDeviceGammaRamp)(DC*,LPVOID);
 202     INT      (*pSetDIBitsToDevice)(DC*,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,
 203                                    LPCVOID,const BITMAPINFO*,UINT);
 204     INT      (*pSetMapMode)(DC*,INT);
 205     DWORD    (*pSetMapperFlags)(DC*,DWORD);
 206     COLORREF (*pSetPixel)(DC*,INT,INT,COLORREF);
 207     BOOL     (*pSetPixelFormat)(DC*,INT,const PIXELFORMATDESCRIPTOR *);
 208     INT      (*pSetPolyFillMode)(DC*,INT);
 209     INT      (*pSetROP2)(DC*,INT);
 210     INT      (*pSetRelAbs)(DC*,INT);
 211     INT      (*pSetStretchBltMode)(DC*,INT);
 212     UINT     (*pSetTextAlign)(DC*,UINT);
 213     INT      (*pSetTextCharacterExtra)(DC*,INT);
 214     DWORD    (*pSetTextColor)(DC*,DWORD);
 215     INT      (*pSetTextJustification)(DC*,INT,INT);
 216     BOOL     (*pSetViewportExt)(DC*,INT,INT);
 217     BOOL     (*pSetViewportOrg)(DC*,INT,INT);
 218     BOOL     (*pSetWindowExt)(DC*,INT,INT);
 219     BOOL     (*pSetWindowOrg)(DC*,INT,INT);
 220     INT      (*pStartDoc)(DC*,const DOCINFOA*);
 221     INT      (*pStartPage)(DC*);
 222     BOOL     (*pStretchBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,INT,INT,DWORD);
 223     INT      (*pStretchDIBits)(DC*,INT,INT,INT,INT,INT,INT,INT,INT,
 224                                const void *,const BITMAPINFO *,UINT,DWORD);
 225     BOOL     (*pStrokeAndFillPath)(DC*);
 226     BOOL     (*pStrokePath)(DC*);
 227     BOOL     (*pSwapBuffers)(DC*);
 228     BOOL     (*pWidenPath)(DC*);
 229 } DC_FUNCTIONS;
 230
 231   /* LoadOEMResource types */
 232 #define OEM_BITMAP  1
 233 #define OEM_CURSOR  2
 234 #define OEM_ICON    3
 235
 236   /* DC hook codes */
 237 #define DCHC_INVALIDVISRGN      0x0001
 238 #define DCHC_DELETEDC           0x0002
 239
 240 #define DCHF_INVALIDATEVISRGN   0x0001
 241 #define DCHF_VALIDATEVISRGN     0x0002
 242
 243   /* DC flags */
 244 #define DC_MEMORY     0x0001   /* It is a memory DC */
 245 #define DC_SAVED      0x0002   /* It is a saved DC */
 246 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 247 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 248
 249   /* Last 32 bytes are reserved for stock object handles */
 250 #define GDI_HEAP_SIZE               0xffe0
 251
 252   /* First handle possible for stock objects (must be >= GDI_HEAP_SIZE) */
 253 #define FIRST_STOCK_HANDLE          GDI_HEAP_SIZE
 254
 255   /* Stock objects handles */
 256
 257 #define NB_STOCK_OBJECTS          (DEFAULT_GUI_FONT + 1)
 258
 259 #define STOCK_WHITE_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+WHITE_BRUSH))
 260 #define STOCK_LTGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+LTGRAY_BRUSH))
 261 #define STOCK_GRAY_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+GRAY_BRUSH))
 262 #define STOCK_DKGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+DKGRAY_BRUSH))
 263 #define STOCK_BLACK_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+BLACK_BRUSH))
 264 #define STOCK_NULL_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+NULL_BRUSH))
 265 #define STOCK_HOLLOW_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+HOLLOW_BRUSH))
 266 #define STOCK_WHITE_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+WHITE_PEN))
 267 #define STOCK_BLACK_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+BLACK_PEN))
 268 #define STOCK_NULL_PEN          ((HPEN16)(FIRST_STOCK_HANDLE+NULL_PEN))
 269 #define STOCK_OEM_FIXED_FONT    ((HFONT16)(FIRST_STOCK_HANDLE+OEM_FIXED_FONT))
 270 #define STOCK_ANSI_FIXED_FONT   ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_FIXED_FONT))
 271 #define STOCK_ANSI_VAR_FONT     ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_VAR_FONT))
 272 #define STOCK_SYSTEM_FONT       ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FONT))
 273 #define STOCK_DEVICE_DEFAULT_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEVICE_DEFAULT_FONT))
 274 #define STOCK_DEFAULT_PALETTE   ((HPALETTE16)(FIRST_STOCK_HANDLE+DEFAULT_PALETTE))
 275 #define STOCK_SYSTEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FIXED_FONT))
 276 #define STOCK_DEFAULT_GUI_FONT  ((HFONT16)(FIRST_STOCK_HANDLE+DEFAULT_GUI_FONT))
 277
 278 #define FIRST_STOCK_FONT        STOCK_OEM_FIXED_FONT
 279 #define LAST_STOCK_FONT         STOCK_DEFAULT_GUI_FONT
 280
 281 #define LAST_STOCK_HANDLE       ((DWORD)STOCK_DEFAULT_GUI_FONT)
 282
 283 extern HBITMAP hPseudoStockBitmap;
 284
 285   /* Device <-> logical coords conversion */
 286
 287 /* A floating point version of the POINT structure */
 288 typedef struct tagFLOAT_POINT
 289 {
 290    FLOAT x, y;
 291 } FLOAT_POINT;
 292
 293 /* Rounds a floating point number to integer. The world-to-viewport
 294  * transformation process is done in floating point internally. This function
 295  * is then used to round these coordinates to integer values.
 296  */
 297 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 298 {
 299    return (int)floor(val + 0.5);
 300 }
 301
 302 /* Performs a viewport-to-world transformation on the specified point (which
 303  * is in floating point format). Returns TRUE if successful, else FALSE.
 304  */
 305 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 306 {
 307     FLOAT x, y;
 308
 309     /* Check that the viewport-to-world transformation is valid */
 310     if (!dc->vport2WorldValid)
 311         return FALSE;
 312
 313     /* Perform the transformation */
 314     x = point->x;
 315     y = point->y;
 316     point->x = x * dc->xformVport2World.eM11 +
 317                y * dc->xformVport2World.eM21 +
 318                dc->xformVport2World.eDx;
 319     point->y = x * dc->xformVport2World.eM12 +
 320                y * dc->xformVport2World.eM22 +
 321                dc->xformVport2World.eDy;
 322
 323     return TRUE;
 324 }
 325
 326 /* Performs a viewport-to-world transformation on the specified point (which
 327  * is in integer format). Returns TRUE if successful, else FALSE.
 328  */
 329 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 330 {
 331     FLOAT_POINT floatPoint;
 332
 333     /* Perform operation with floating point */
 334     floatPoint.x=(FLOAT)point->x;
 335     floatPoint.y=(FLOAT)point->y;
 336     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 337         return FALSE;
 338
 339     /* Round to integers */
 340     point->x = GDI_ROUND(floatPoint.x);
 341     point->y = GDI_ROUND(floatPoint.y);
 342
 343     return TRUE;
 344 }
 345
 346 /* Performs a world-to-viewport transformation on the specified point (which
 347  * is in floating point format).
 348  */
 349 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 350 {
 351     FLOAT x, y;
 352
 353     /* Perform the transformation */
 354     x = point->x;
 355     y = point->y;
 356     point->x = x * dc->xformWorld2Vport.eM11 +
 357                y * dc->xformWorld2Vport.eM21 +
 358                dc->xformWorld2Vport.eDx;
 359     point->y = x * dc->xformWorld2Vport.eM12 +
 360                y * dc->xformWorld2Vport.eM22 +
 361                dc->xformWorld2Vport.eDy;
 362 }
 363
 364 /* Performs a world-to-viewport transformation on the specified point (which
 365  * is in integer format).
 366  */
 367 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 368 {
 369     FLOAT_POINT floatPoint;
 370
 371     /* Perform operation with floating point */
 372     floatPoint.x=(FLOAT)point->x;
 373     floatPoint.y=(FLOAT)point->y;
 374     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 375
 376     /* Round to integers */
 377     point->x = GDI_ROUND(floatPoint.x);
 378     point->y = GDI_ROUND(floatPoint.y);
 379 }
 380
 381
 382 /* Performs a world-to-viewport transformation on the specified point (which
 383  * is in integer format).
 384  */
 385 static inline INT WINE_UNUSED INTERNAL_XWPTODP(DC *dc, INT x, INT y)
 386 {
 387     FLOAT_POINT floatPoint;
 388
 389     /* Perform operation with floating point */
 390     floatPoint.x=(FLOAT)x;
 391     floatPoint.y=(FLOAT)y;
 392     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 393
 394     /* Round to integers */
 395     return GDI_ROUND(floatPoint.x);
 396 }
 397
 398 /* Performs a world-to-viewport transformation on the specified point (which
 399  * is in integer format).
 400  */
 401 static inline INT WINE_UNUSED INTERNAL_YWPTODP(DC *dc, INT x, INT y)
 402 {
 403     FLOAT_POINT floatPoint;
 404
 405     /* Perform operation with floating point */
 406     floatPoint.x=(FLOAT)x;
 407     floatPoint.y=(FLOAT)y;
 408     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 409
 410     /* Round to integers */
 411     return GDI_ROUND(floatPoint.y);
 412 }
 413
 414
 415 /* Performs a viewport-to-world transformation on the specified point (which
 416  * is in integer format).
 417  */
 418 static inline INT WINE_UNUSED INTERNAL_XDPTOWP(DC *dc, INT x, INT y)
 419 {
 420     FLOAT_POINT floatPoint;
 421
 422     /* Perform operation with floating point */
 423     floatPoint.x=(FLOAT)x;
 424     floatPoint.y=(FLOAT)y;
 425     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 426
 427     /* Round to integers */
 428     return GDI_ROUND(floatPoint.x);
 429 }
 430
 431 /* Performs a viewport-to-world transformation on the specified point (which
 432  * is in integer format).
 433  */
 434 static inline INT WINE_UNUSED INTERNAL_YDPTOWP(DC *dc, INT x, INT y)
 435 {
 436     FLOAT_POINT floatPoint;
 437
 438     /* Perform operation with floating point */
 439     floatPoint.x=(FLOAT)x;
 440     floatPoint.y=(FLOAT)y;
 441     INTERNAL_DPTOLP_FLOAT(dc, &floatPoint);
 442
 443     /* Round to integers */
 444     return GDI_ROUND(floatPoint.y);
 445 }
 446
 447
 448 #define XDPTOLP(dc,x) \
 449     (MulDiv(((x)-(dc)->vportOrgX), (dc)->wndExtX, (dc)->vportExtX) + (dc)->wndOrgX)
 450 #define YDPTOLP(dc,y) \
 451     (MulDiv(((y)-(dc)->vportOrgY), (dc)->wndExtY, (dc)->vportExtY) + (dc)->wndOrgY)
 452 #define XLPTODP(dc,x) \
 453     (MulDiv(((x)-(dc)->wndOrgX), (dc)->vportExtX, (dc)->wndExtX) + (dc)->vportOrgX)
 454 #define YLPTODP(dc,y) \
 455     (MulDiv(((y)-(dc)->wndOrgY), (dc)->vportExtY, (dc)->wndExtY) + (dc)->vportOrgY)
 456
 457
 458
 459   /* World -> Device size conversion */
 460
 461 /* Performs a world-to-viewport transformation on the specified width (which
 462  * is in floating point format).
 463  */
 464 static inline void WINE_UNUSED INTERNAL_XWSTODS_FLOAT(DC *dc, FLOAT *width)
 465 {
 466     /* Perform the transformation */
 467     *width = *width * dc->xformWorld2Vport.eM11;
 468 }
 469
 470 /* Performs a world-to-viewport transformation on the specified width (which
 471  * is in integer format).
 472  */
 473 static inline INT WINE_UNUSED INTERNAL_XWSTODS(DC *dc, INT width)
 474 {
 475     FLOAT floatWidth;
 476
 477     /* Perform operation with floating point */
 478     floatWidth = (FLOAT)width;
 479     INTERNAL_XWSTODS_FLOAT(dc, &floatWidth);
 480
 481     /* Round to integers */
 482     return GDI_ROUND(floatWidth);
 483 }
 484
 485
 486 /* Performs a world-to-viewport transformation on the specified size (which
 487  * is in floating point format).
 488  */
 489 static inline void WINE_UNUSED INTERNAL_YWSTODS_FLOAT(DC *dc, FLOAT *height)
 490 {
 491     /* Perform the transformation */
 492     *height = *height * dc->xformWorld2Vport.eM22;
 493 }
 494
 495 /* Performs a world-to-viewport transformation on the specified size (which
 496  * is in integer format).
 497  */
 498 static inline INT WINE_UNUSED INTERNAL_YWSTODS(DC *dc, INT height)
 499 {
 500     FLOAT floatHeight;
 501
 502     /* Perform operation with floating point */
 503     floatHeight = (FLOAT)height;
 504     INTERNAL_YWSTODS_FLOAT(dc, &floatHeight);
 505
 506     /* Round to integers */
 507     return GDI_ROUND(floatHeight);
 508 }
 509
 510
 511   /* Device <-> logical size conversion */
 512
 513 #define XDSTOLS(dc,x) \
 514     MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
 515 #define YDSTOLS(dc,y) \
 516     MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
 517 #define XLSTODS(dc,x) \
 518     MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
 519 #define YLSTODS(dc,y) \
 520     MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
 521
 522   /* GDI local heap */
 523
 524 extern BOOL GDI_Init(void);
 525 extern void *GDI_AllocObject( WORD, WORD, HGDIOBJ * );
 526 extern void *GDI_ReallocObject( WORD, HGDIOBJ, void *obj );
 527 extern BOOL GDI_FreeObject( HGDIOBJ, void *obj );
 528 extern void *GDI_GetObjPtr( HGDIOBJ, WORD );
 529 extern void GDI_ReleaseObj( HGDIOBJ );
 530
 531 extern const DC_FUNCTIONS *DRIVER_load_driver( LPCSTR name );
 532 extern const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs );
 533 extern void DRIVER_release_driver( const DC_FUNCTIONS *funcs );
 534 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 535
 536 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut );
 537
 538 extern DC * DC_AllocDC( const DC_FUNCTIONS *funcs );
 539 extern DC * DC_GetDCPtr( HDC hdc );
 540 extern DC * DC_GetDCUpdate( HDC hdc );
 541 extern void DC_InitDC( DC * dc );
 542 extern void DC_UpdateXforms( DC * dc );
 543
 544
 545 #define CLIP_INTERSECT 0x0001
 546 #define CLIP_EXCLUDE   0x0002
 547 #define CLIP_KEEPRGN   0x0004
 548
 549 /* objects/clipping.c */
 550 INT CLIPPING_IntersectClipRect( DC * dc, INT left, INT top,
 551                                 INT right, INT bottom, UINT flags );
 552 INT CLIPPING_IntersectVisRect( DC * dc, INT left, INT top,
 553                                INT right, INT bottom, BOOL exclude );
 554 extern void CLIPPING_UpdateGCRegion( DC * dc );
 555
 556 /* objects/enhmetafile.c */
 557 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk );
 558
 559 #endif  /* __WINE_GDI_H */