dlls/gdi32/gdi_private.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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __WINE_GDI_PRIVATE_H
  22 #define __WINE_GDI_PRIVATE_H
  23
  24 #include <math.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "wine/gdi_driver.h"
  31
  32 /* Metafile defines */
  33 #define META_EOF 0x0000
  34 /* values of mtType in METAHEADER.  Note however that the disk image of a disk
  35    based metafile has mtType == 1 */
  36 #define METAFILE_MEMORY 1
  37 #define METAFILE_DISK   2
  38 #define MFHEADERSIZE (sizeof(METAHEADER))
  39 #define MFVERSION 0x300
  40
  41 typedef struct {
  42     EMR   emr;
  43     INT   nBreakExtra;
  44     INT   nBreakCount;
  45 } EMRSETTEXTJUSTIFICATION, *PEMRSETTEXTJUSTIFICATION;
  46
  47 /* extra stock object: default 1x1 bitmap for memory DCs */
  48 #define DEFAULT_BITMAP (STOCK_LAST+1)
  49
  50 struct gdi_obj_funcs
  51 {
  52     HGDIOBJ (*pSelectObject)( HGDIOBJ handle, HDC hdc );
  53     INT     (*pGetObjectA)( HGDIOBJ handle, INT count, LPVOID buffer );
  54     INT     (*pGetObjectW)( HGDIOBJ handle, INT count, LPVOID buffer );
  55     BOOL    (*pUnrealizeObject)( HGDIOBJ handle );
  56     BOOL    (*pDeleteObject)( HGDIOBJ handle );
  57 };
  58
  59 struct hdc_list
  60 {
  61     HDC hdc;
  62     struct hdc_list *next;
  63 };
  64
  65 typedef struct tagGDIOBJHDR
  66 {
  67     WORD        type;         /* object type (one of the OBJ_* constants) */
  68     WORD        system : 1;   /* system object flag */
  69     WORD        deleted : 1;  /* whether DeleteObject has been called on this object */
  70     DWORD       selcount;     /* number of times the object is selected in a DC */
  71     const struct gdi_obj_funcs *funcs;
  72     struct hdc_list *hdcs;
  73 } GDIOBJHDR;
  74
  75 typedef struct gdi_dc_funcs DC_FUNCTIONS;
  76
  77 /* It should not be necessary to access the contents of the GdiPath
  78  * structure directly; if you find that the exported functions don't
  79  * allow you to do what you want, then please place a new exported
  80  * function that does this job in path.c.
  81  */
  82 typedef enum tagGdiPathState
  83 {
  84    PATH_Null,
  85    PATH_Open,
  86    PATH_Closed
  87 } GdiPathState;
  88
  89 typedef struct tagGdiPath
  90 {
  91    GdiPathState state;
  92    POINT      *pPoints;
  93    BYTE         *pFlags;
  94    int          numEntriesUsed, numEntriesAllocated;
  95    BOOL       newStroke;
  96 } GdiPath;
  97
  98 typedef struct tagGdiFont GdiFont;
  99
 100 typedef struct tagDC
 101 {
 102     GDIOBJHDR    header;
 103     HDC          hSelf;            /* Handle to this DC */
 104     struct gdi_physdev nulldrv;    /* physdev for the null driver */
 105     PHYSDEV      dibdrv;           /* physdev for the dib driver */
 106     PHYSDEV      physDev;          /* current top of the physdev stack */
 107     DWORD        thread;           /* thread owning the DC */
 108     LONG         refcount;         /* thread refcount */
 109     LONG         dirty;            /* dirty flag */
 110     INT          saveLevel;
 111     struct tagDC *saved_dc;
 112     DWORD_PTR    dwHookData;
 113     DCHOOKPROC   hookProc;         /* DC hook */
 114
 115     INT          wndOrgX;          /* Window origin */
 116     INT          wndOrgY;
 117     INT          wndExtX;          /* Window extent */
 118     INT          wndExtY;
 119     INT          vportOrgX;        /* Viewport origin */
 120     INT          vportOrgY;
 121     INT          vportExtX;        /* Viewport extent */
 122     INT          vportExtY;
 123     SIZE         virtual_res;      /* Initially HORZRES,VERTRES. Changed by SetVirtualResolution */
 124     SIZE         virtual_size;     /* Initially HORZSIZE,VERTSIZE. Changed by SetVirtualResolution */
 125     RECT         vis_rect;         /* visible rectangle in screen coords */
 126     FLOAT        miterLimit;
 127
 128     int           flags;
 129     DWORD         layout;
 130     HRGN          hClipRgn;      /* Clip region (may be 0) */
 131     HRGN          hMetaRgn;      /* Meta region (may be 0) */
 132     HRGN          hMetaClipRgn;  /* Intersection of meta and clip regions (may be 0) */
 133     HRGN          hVisRgn;       /* Visible region (must never be 0) */
 134     HPEN          hPen;
 135     HBRUSH        hBrush;
 136     HFONT         hFont;
 137     HBITMAP       hBitmap;
 138     HANDLE        hDevice;
 139     HPALETTE      hPalette;
 140
 141     GdiFont      *gdiFont;
 142     GdiPath       path;
 143
 144     UINT          font_code_page;
 145     WORD          ROPmode;
 146     WORD          polyFillMode;
 147     WORD          stretchBltMode;
 148     WORD          relAbsMode;
 149     WORD          backgroundMode;
 150     COLORREF      backgroundColor;
 151     COLORREF      textColor;
 152     COLORREF      dcBrushColor;
 153     COLORREF      dcPenColor;
 154     short         brushOrgX;
 155     short         brushOrgY;
 156
 157     DWORD         mapperFlags;       /* Font mapper flags */
 158     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 159     INT           charExtra;         /* Spacing from SetTextCharacterExtra() */
 160     INT           breakExtra;        /* breakTotalExtra / breakCount */
 161     INT           breakRem;          /* breakTotalExtra % breakCount */
 162     INT           MapMode;
 163     INT           GraphicsMode;      /* Graphics mode */
 164     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 165     INT           CursPosX;          /* Current position */
 166     INT           CursPosY;
 167     INT           ArcDirection;
 168     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 169     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 170     XFORM         xformVport2World;  /* Inverse of the above transformation */
 171     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 172     RECT          BoundsRect;        /* Current bounding rect */
 173 } DC;
 174
 175   /* DC flags */
 176 #define DC_BOUNDS_ENABLE 0x0008   /* Bounding rectangle tracking is enabled */
 177
 178 /* Certain functions will do no further processing if the driver returns this.
 179    Used by mfdrv for example. */
 180 #define GDI_NO_MORE_WORK 2
 181
 182 /* Rounds a floating point number to integer. The world-to-viewport
 183  * transformation process is done in floating point internally. This function
 184  * is then used to round these coordinates to integer values.
 185  */
 186 static inline INT GDI_ROUND(double val)
 187 {
 188    return (int)floor(val + 0.5);
 189 }
 190
 191 #define GET_DC_PHYSDEV(dc,func) \
 192     get_physdev_entry_point( (dc)->physDev, FIELD_OFFSET(struct gdi_dc_funcs,func))
 193
 194 /* bitmap object */
 195
 196 typedef struct tagBITMAPOBJ
 197 {
 198     GDIOBJHDR           header;
 199     BITMAP              bitmap;
 200     SIZE                size;   /* For SetBitmapDimension() */
 201     const DC_FUNCTIONS *funcs; /* DC function table */
 202     /* For device-independent bitmaps: */
 203     DIBSECTION         *dib;
 204     RGBQUAD            *color_table;  /* DIB color table if <= 8bpp */
 205     UINT                nb_colors;    /* number of colors in table */
 206 } BITMAPOBJ;
 207
 208 /* bidi.c */
 209
 210 /* Wine_GCPW Flags */
 211 /* Directionality -
 212  * LOOSE means taking the directionality of the first strong character, if there is found one.
 213  * FORCE means the paragraph direction is forced. (RLE/LRE)
 214  */
 215 #define WINE_GCPW_FORCE_LTR 0
 216 #define WINE_GCPW_FORCE_RTL 1
 217 #define WINE_GCPW_LOOSE_LTR 2
 218 #define WINE_GCPW_LOOSE_RTL 3
 219 #define WINE_GCPW_DIR_MASK 3
 220 #define WINE_GCPW_LOOSE_MASK 2
 221
 222 extern BOOL BIDI_Reorder( HDC hDC, LPCWSTR lpString, INT uCount, DWORD dwFlags, DWORD dwWineGCP_Flags,
 223                           LPWSTR lpOutString, INT uCountOut, UINT *lpOrder, WORD **lpGlyphs, INT* cGlyphs ) DECLSPEC_HIDDEN;
 224
 225 /* bitmap.c */
 226 extern void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) DECLSPEC_HIDDEN;
 227 extern BOOL get_bitmap_image( HBITMAP hbitmap, BITMAPINFO *info, struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 228 extern HBITMAP BITMAP_CopyBitmap( HBITMAP hbitmap ) DECLSPEC_HIDDEN;
 229 extern BOOL BITMAP_SetOwnerDC( HBITMAP hbitmap, PHYSDEV physdev ) DECLSPEC_HIDDEN;
 230
 231 /* clipping.c */
 232 extern int get_clip_box( DC *dc, RECT *rect ) DECLSPEC_HIDDEN;
 233 extern void CLIPPING_UpdateGCRegion( DC * dc ) DECLSPEC_HIDDEN;
 234
 235 /* Return the total clip region (if any) */
 236 static inline HRGN get_clip_region( DC * dc )
 237 {
 238     if (dc->hMetaClipRgn) return dc->hMetaClipRgn;
 239     if (dc->hMetaRgn) return dc->hMetaRgn;
 240     return dc->hClipRgn;
 241 }
 242
 243 /* dc.c */
 244 extern DC *alloc_dc_ptr( WORD magic ) DECLSPEC_HIDDEN;
 245 extern void free_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 246 extern DC *get_dc_ptr( HDC hdc ) DECLSPEC_HIDDEN;
 247 extern void release_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 248 extern void update_dc( DC *dc ) DECLSPEC_HIDDEN;
 249 extern void DC_InitDC( DC * dc ) DECLSPEC_HIDDEN;
 250 extern void DC_UpdateXforms( DC * dc ) DECLSPEC_HIDDEN;
 251
 252 /* dib.c */
 253 extern int bitmap_info_size( const BITMAPINFO * info, WORD coloruse ) DECLSPEC_HIDDEN;
 254 extern DWORD convert_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 255                                  const BITMAPINFO *dst_info, void *dst_bits ) DECLSPEC_HIDDEN;
 256
 257 extern DWORD stretch_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 258                                  const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
 259                                  INT mode ) DECLSPEC_HIDDEN;
 260
 261 /* driver.c */
 262 extern const DC_FUNCTIONS null_driver DECLSPEC_HIDDEN;
 263 extern const DC_FUNCTIONS dib_driver DECLSPEC_HIDDEN;
 264 extern const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name ) DECLSPEC_HIDDEN;
 265 extern BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size ) DECLSPEC_HIDDEN;
 266
 267 /* enhmetafile.c */
 268 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk ) DECLSPEC_HIDDEN;
 269
 270 /* freetype.c */
 271
 272 /* Undocumented structure filled in by GdiRealizationInfo */
 273 typedef struct
 274 {
 275     DWORD flags;       /* 1 for bitmap fonts, 3 for scalable fonts */
 276     DWORD cache_num;   /* keeps incrementing - num of fonts that have been created allowing for caching?? */
 277     DWORD unknown2;    /* fixed for a given font - looks like it could be the order of the face in the font list or the order
 278                           in which the face was first rendered. */
 279 } realization_info_t;
 280
 281
 282 extern INT WineEngAddFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
 283 extern HANDLE WineEngAddFontMemResourceEx(PVOID, DWORD, PVOID, LPDWORD) DECLSPEC_HIDDEN;
 284 extern GdiFont* WineEngCreateFontInstance(DC*, HFONT) DECLSPEC_HIDDEN;
 285 extern BOOL WineEngDestroyFontInstance(HFONT handle) DECLSPEC_HIDDEN;
 286 extern DWORD WineEngEnumFonts(LPLOGFONTW, FONTENUMPROCW, LPARAM) DECLSPEC_HIDDEN;
 287 extern BOOL WineEngGetCharABCWidths(GdiFont *font, UINT firstChar,
 288                                     UINT lastChar, LPABC buffer) DECLSPEC_HIDDEN;
 289 extern BOOL WineEngGetCharABCWidthsFloat(GdiFont *font, UINT firstChar,
 290                                          UINT lastChar, LPABCFLOAT buffer) DECLSPEC_HIDDEN;
 291 extern BOOL WineEngGetCharABCWidthsI(GdiFont *font, UINT firstChar,
 292                                     UINT count, LPWORD pgi, LPABC buffer) DECLSPEC_HIDDEN;
 293 extern BOOL WineEngGetCharWidth(GdiFont*, UINT, UINT, LPINT) DECLSPEC_HIDDEN;
 294 extern DWORD WineEngGetFontData(GdiFont*, DWORD, DWORD, LPVOID, DWORD) DECLSPEC_HIDDEN;
 295 extern DWORD WineEngGetFontUnicodeRanges(GdiFont *, LPGLYPHSET) DECLSPEC_HIDDEN;
 296 extern DWORD WineEngGetGlyphIndices(GdiFont *font, LPCWSTR lpstr, INT count,
 297                                     LPWORD pgi, DWORD flags) DECLSPEC_HIDDEN;
 298 extern DWORD WineEngGetGlyphOutline(GdiFont*, UINT glyph, UINT format,
 299                                     LPGLYPHMETRICS, DWORD buflen, LPVOID buf,
 300                                     const MAT2*) DECLSPEC_HIDDEN;
 301 extern DWORD WineEngGetKerningPairs(GdiFont*, DWORD, KERNINGPAIR *) DECLSPEC_HIDDEN;
 302 extern BOOL WineEngGetLinkedHFont(DC *dc, WCHAR c, HFONT *new_hfont, UINT *glyph) DECLSPEC_HIDDEN;
 303 extern UINT WineEngGetOutlineTextMetrics(GdiFont*, UINT, LPOUTLINETEXTMETRICW) DECLSPEC_HIDDEN;
 304 extern UINT WineEngGetTextCharsetInfo(GdiFont *font, LPFONTSIGNATURE fs, DWORD flags) DECLSPEC_HIDDEN;
 305 extern BOOL WineEngGetTextExtentExPoint(GdiFont*, LPCWSTR, INT, INT, LPINT, LPINT, LPSIZE) DECLSPEC_HIDDEN;
 306 extern BOOL WineEngGetTextExtentExPointI(GdiFont*, const WORD *, INT, INT, LPINT, LPINT, LPSIZE) DECLSPEC_HIDDEN;
 307 extern INT  WineEngGetTextFace(GdiFont*, INT, LPWSTR) DECLSPEC_HIDDEN;
 308 extern BOOL WineEngGetTextMetrics(GdiFont*, LPTEXTMETRICW) DECLSPEC_HIDDEN;
 309 extern BOOL WineEngFontIsLinked(GdiFont*) DECLSPEC_HIDDEN;
 310 extern BOOL WineEngInit(void) DECLSPEC_HIDDEN;
 311 extern BOOL WineEngRealizationInfo(GdiFont*, realization_info_t*) DECLSPEC_HIDDEN;
 312 extern BOOL WineEngRemoveFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
 313
 314 /* gdiobj.c */
 315 extern HGDIOBJ alloc_gdi_handle( GDIOBJHDR *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
 316 extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 317 extern void *GDI_GetObjPtr( HGDIOBJ, WORD ) DECLSPEC_HIDDEN;
 318 extern void GDI_ReleaseObj( HGDIOBJ ) DECLSPEC_HIDDEN;
 319 extern void GDI_CheckNotLock(void) DECLSPEC_HIDDEN;
 320 extern HGDIOBJ GDI_inc_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 321 extern BOOL GDI_dec_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 322 extern BOOL GDI_hdc_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
 323 extern BOOL GDI_hdc_not_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
 324
 325 /* metafile.c */
 326 extern HMETAFILE MF_Create_HMETAFILE(METAHEADER *mh) DECLSPEC_HIDDEN;
 327 extern METAHEADER *MF_CreateMetaHeaderDisk(METAHEADER *mr, LPCVOID filename, BOOL unicode ) DECLSPEC_HIDDEN;
 328
 329 /* path.c */
 330
 331 #define PATH_IsPathOpen(path) ((path).state==PATH_Open)
 332 /* Returns TRUE if the specified path is in the open state, i.e. in the
 333  * state where points will be added to the path, or FALSE otherwise. This
 334  * function is implemented as a macro for performance reasons.
 335  */
 336
 337 extern void PATH_InitGdiPath(GdiPath *pPath) DECLSPEC_HIDDEN;
 338 extern void PATH_DestroyGdiPath(GdiPath *pPath) DECLSPEC_HIDDEN;
 339 extern BOOL PATH_AssignGdiPath(GdiPath *pPathDest, const GdiPath *pPathSrc) DECLSPEC_HIDDEN;
 340
 341 extern BOOL PATH_MoveTo(DC *dc) DECLSPEC_HIDDEN;
 342 extern BOOL PATH_LineTo(DC *dc, INT x, INT y) DECLSPEC_HIDDEN;
 343 extern BOOL PATH_Rectangle(DC *dc, INT x1, INT y1, INT x2, INT y2) DECLSPEC_HIDDEN;
 344 extern BOOL PATH_ExtTextOut(DC *dc, INT x, INT y, UINT flags, const RECT *lprc,
 345                             LPCWSTR str, UINT count, const INT *dx) DECLSPEC_HIDDEN;
 346 extern BOOL PATH_Ellipse(DC *dc, INT x1, INT y1, INT x2, INT y2) DECLSPEC_HIDDEN;
 347 extern BOOL PATH_Arc(DC *dc, INT x1, INT y1, INT x2, INT y2,
 348                      INT xStart, INT yStart, INT xEnd, INT yEnd, INT lines) DECLSPEC_HIDDEN;
 349 extern BOOL PATH_PolyBezierTo(DC *dc, const POINT *pt, DWORD cbCount) DECLSPEC_HIDDEN;
 350 extern BOOL PATH_PolyBezier(DC *dc, const POINT *pt, DWORD cbCount) DECLSPEC_HIDDEN;
 351 extern BOOL PATH_PolyDraw(DC *dc, const POINT *pts, const BYTE *types, DWORD cbCount) DECLSPEC_HIDDEN;
 352 extern BOOL PATH_PolylineTo(DC *dc, const POINT *pt, DWORD cbCount) DECLSPEC_HIDDEN;
 353 extern BOOL PATH_Polyline(DC *dc, const POINT *pt, DWORD cbCount) DECLSPEC_HIDDEN;
 354 extern BOOL PATH_Polygon(DC *dc, const POINT *pt, DWORD cbCount) DECLSPEC_HIDDEN;
 355 extern BOOL PATH_PolyPolyline(DC *dc, const POINT *pt, const DWORD *counts, DWORD polylines) DECLSPEC_HIDDEN;
 356 extern BOOL PATH_PolyPolygon(DC *dc, const POINT *pt, const INT *counts, UINT polygons) DECLSPEC_HIDDEN;
 357 extern BOOL PATH_RoundRect(DC *dc, INT x1, INT y1, INT x2, INT y2, INT ell_width, INT ell_height) DECLSPEC_HIDDEN;
 358
 359 /* painting.c */
 360 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut ) DECLSPEC_HIDDEN;
 361
 362 /* palette.c */
 363 extern HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg) DECLSPEC_HIDDEN;
 364 extern UINT WINAPI GDIRealizePalette( HDC hdc ) DECLSPEC_HIDDEN;
 365 extern HPALETTE PALETTE_Init(void) DECLSPEC_HIDDEN;
 366
 367 /* region.c */
 368 extern INT mirror_region( HRGN dst, HRGN src, INT width ) DECLSPEC_HIDDEN;
 369 extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN;
 370
 371 typedef struct
 372 {
 373     INT size;
 374     INT numRects;
 375     RECT *rects;
 376     RECT extents;
 377 } WINEREGION;
 378 extern const WINEREGION *get_wine_region(HRGN rgn) DECLSPEC_HIDDEN;
 379 static inline void release_wine_region(HRGN rgn)
 380 {
 381     GDI_ReleaseObj(rgn);
 382 }
 383
 384 /* null driver entry points */
 385 extern BOOL nulldrv_AbortPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 386 extern BOOL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
 387                                 PHYSDEV src_dev, struct bitblt_coords *src, BLENDFUNCTION func) DECLSPEC_HIDDEN;
 388 extern BOOL nulldrv_AngleArc( PHYSDEV dev, INT x, INT y, DWORD radius, FLOAT start, FLOAT sweep ) DECLSPEC_HIDDEN;
 389 extern BOOL nulldrv_ArcTo( PHYSDEV dev, INT left, INT top, INT right, INT bottom, INT xstart, INT ystart, INT xend, INT yend ) DECLSPEC_HIDDEN;
 390 extern BOOL nulldrv_BeginPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 391 extern BOOL nulldrv_CloseFigure( PHYSDEV dev ) DECLSPEC_HIDDEN;
 392 extern BOOL nulldrv_EndPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 393 extern INT  nulldrv_ExcludeClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 394 extern INT  nulldrv_ExtSelectClipRgn( PHYSDEV dev, HRGN rgn, INT mode ) DECLSPEC_HIDDEN;
 395 extern BOOL nulldrv_FillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 396 extern BOOL nulldrv_FillRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush ) DECLSPEC_HIDDEN;
 397 extern BOOL nulldrv_FlattenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 398 extern BOOL nulldrv_FrameRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush, INT width, INT height ) DECLSPEC_HIDDEN;
 399 extern LONG nulldrv_GetBitmapBits( HBITMAP bitmap, void *bits, LONG size ) DECLSPEC_HIDDEN;
 400 extern DWORD nulldrv_GetImage( PHYSDEV dev, HBITMAP hbitmap, BITMAPINFO *info, struct gdi_image_bits *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 401 extern COLORREF nulldrv_GetNearestColor( PHYSDEV dev, COLORREF color ) DECLSPEC_HIDDEN;
 402 extern INT  nulldrv_IntersectClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 403 extern BOOL nulldrv_InvertRgn( PHYSDEV dev, HRGN rgn ) DECLSPEC_HIDDEN;
 404 extern BOOL nulldrv_ModifyWorldTransform( PHYSDEV dev, const XFORM *xform, DWORD mode ) DECLSPEC_HIDDEN;
 405 extern INT  nulldrv_OffsetClipRgn( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 406 extern BOOL nulldrv_OffsetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 407 extern BOOL nulldrv_OffsetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 408 extern BOOL nulldrv_PolyBezier( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 409 extern BOOL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 410 extern BOOL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count ) DECLSPEC_HIDDEN;
 411 extern BOOL nulldrv_PolylineTo( PHYSDEV dev, const POINT *points, INT count ) DECLSPEC_HIDDEN;
 412 extern DWORD nulldrv_PutImage( PHYSDEV dev, HBITMAP hbitmap, HRGN clip, BITMAPINFO *info,
 413                                const struct gdi_image_bits *bits, struct bitblt_coords *src,
 414                                struct bitblt_coords *dst, DWORD rop ) DECLSPEC_HIDDEN;
 415 extern BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level ) DECLSPEC_HIDDEN;
 416 extern INT  nulldrv_SaveDC( PHYSDEV dev ) DECLSPEC_HIDDEN;
 417 extern BOOL nulldrv_ScaleViewportExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
 418 extern BOOL nulldrv_ScaleWindowExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
 419 extern BOOL nulldrv_SelectClipPath( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
 420 extern INT nulldrv_SetDIBitsToDevice( PHYSDEV dev, INT x_dst, INT y_dst, DWORD width, DWORD height,
 421                                       INT x_src, INT y_src, UINT start, UINT lines,
 422                                       const void *bits, BITMAPINFO *info, UINT coloruse ) DECLSPEC_HIDDEN;
 423 extern INT  nulldrv_SetMapMode( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
 424 extern BOOL nulldrv_SetViewportExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
 425 extern BOOL nulldrv_SetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 426 extern BOOL nulldrv_SetWindowExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
 427 extern BOOL nulldrv_SetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 428 extern BOOL nulldrv_SetWorldTransform( PHYSDEV dev, const XFORM *xform ) DECLSPEC_HIDDEN;
 429 extern BOOL nulldrv_StretchBlt( PHYSDEV dst_dev, struct bitblt_coords *dst,
 430                                 PHYSDEV src_dev, struct bitblt_coords *src, DWORD rop ) DECLSPEC_HIDDEN;
 431 extern INT  nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
 432                                    INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
 433                                    BITMAPINFO *info, UINT coloruse, DWORD rop ) DECLSPEC_HIDDEN;
 434 extern BOOL nulldrv_StrokeAndFillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 435 extern BOOL nulldrv_StrokePath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 436 extern BOOL nulldrv_WidenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 437
 438 static inline DC *get_nulldrv_dc( PHYSDEV dev )
 439 {
 440     return CONTAINING_RECORD( dev, DC, nulldrv );
 441 }
 442
 443 /* Undocumented value for DIB's iUsage: Indicates a mono DIB w/o pal entries */
 444 #define DIB_PAL_MONO 2
 445
 446 BOOL WINAPI FontIsLinked(HDC);
 447
 448 BOOL WINAPI SetVirtualResolution(HDC hdc, DWORD horz_res, DWORD vert_res, DWORD horz_size, DWORD vert_size);
 449
 450 static inline BOOL is_rect_empty( const RECT *rect )
 451 {
 452     return (rect->left >= rect->right || rect->top >= rect->bottom);
 453 }
 454
 455 static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
 456 {
 457     dst->left   = max( src1->left, src2->left );
 458     dst->top    = max( src1->top, src2->top );
 459     dst->right  = min( src1->right, src2->right );
 460     dst->bottom = min( src1->bottom, src2->bottom );
 461     return !is_rect_empty( dst );
 462 }
 463
 464 static inline void offset_rect( RECT *rect, int offset_x, int offset_y )
 465 {
 466     rect->left   += offset_x;
 467     rect->top    += offset_y;
 468     rect->right  += offset_x;
 469     rect->bottom += offset_y;
 470 }
 471
 472 static inline int get_bitmap_stride( int width, int bpp )
 473 {
 474     return ((width * bpp + 15) >> 3) & ~1;
 475 }
 476
 477 static inline int get_dib_stride( int width, int bpp )
 478 {
 479     return ((width * bpp + 31) >> 3) & ~3;
 480 }
 481
 482 static inline int get_dib_image_size( const BITMAPINFO *info )
 483 {
 484     return get_dib_stride( info->bmiHeader.biWidth, info->bmiHeader.biBitCount )
 485         * abs( info->bmiHeader.biHeight );
 486 }
 487
 488 static inline int get_dib_num_of_colors( const BITMAPINFO *info )
 489 {
 490     if (info->bmiHeader.biClrUsed) return min( info->bmiHeader.biClrUsed, 256 );
 491     return info->bmiHeader.biBitCount > 8 ? 0 : 1 << info->bmiHeader.biBitCount;
 492 }
 493
 494 static inline const struct gdi_dc_funcs *get_bitmap_funcs( const BITMAPOBJ *bitmap )
 495 {
 496     if( bitmap->dib ) return &dib_driver;
 497     return bitmap->funcs;
 498 }
 499
 500 extern void free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 501
 502 #endif /* __WINE_GDI_PRIVATE_H */