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 <limits.h>
  25 #include <math.h>
  26 #include <stdlib.h>
  27 #include <stdarg.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "wine/gdi_driver.h"
  32
  33 /* Metafile defines */
  34 #define META_EOF 0x0000
  35 /* values of mtType in METAHEADER.  Note however that the disk image of a disk
  36    based metafile has mtType == 1 */
  37 #define METAFILE_MEMORY 1
  38 #define METAFILE_DISK   2
  39 #define MFHEADERSIZE (sizeof(METAHEADER))
  40 #define MFVERSION 0x300
  41
  42 typedef struct {
  43     EMR   emr;
  44     INT   nBreakExtra;
  45     INT   nBreakCount;
  46 } EMRSETTEXTJUSTIFICATION, *PEMRSETTEXTJUSTIFICATION;
  47
  48 /* extra stock object: default 1x1 bitmap for memory DCs */
  49 #define DEFAULT_BITMAP (STOCK_LAST+1)
  50
  51 struct gdi_obj_funcs
  52 {
  53     HGDIOBJ (*pSelectObject)( HGDIOBJ handle, HDC hdc );
  54     INT     (*pGetObjectA)( HGDIOBJ handle, INT count, LPVOID buffer );
  55     INT     (*pGetObjectW)( HGDIOBJ handle, INT count, LPVOID buffer );
  56     BOOL    (*pUnrealizeObject)( HGDIOBJ handle );
  57     BOOL    (*pDeleteObject)( HGDIOBJ handle );
  58 };
  59
  60 typedef struct tagDC
  61 {
  62     HDC          hSelf;            /* Handle to this DC */
  63     struct gdi_physdev nulldrv;    /* physdev for the null driver */
  64     PHYSDEV      physDev;          /* current top of the physdev stack */
  65     DWORD        thread;           /* thread owning the DC */
  66     LONG         refcount;         /* thread refcount */
  67     LONG         dirty;            /* dirty flag */
  68     INT          saveLevel;
  69     struct tagDC *saved_dc;
  70     DWORD_PTR    dwHookData;
  71     DCHOOKPROC   hookProc;         /* DC hook */
  72     BOOL         bounds_enabled:1; /* bounds tracking is enabled */
  73     BOOL         path_open:1;      /* path is currently open (only for saved DCs) */
  74
  75     POINT        wnd_org;          /* Window origin */
  76     SIZE         wnd_ext;          /* Window extent */
  77     POINT        vport_org;        /* Viewport origin */
  78     SIZE         vport_ext;        /* Viewport extent */
  79     SIZE         virtual_res;      /* Initially HORZRES,VERTRES. Changed by SetVirtualResolution */
  80     SIZE         virtual_size;     /* Initially HORZSIZE,VERTSIZE. Changed by SetVirtualResolution */
  81     RECT         vis_rect;         /* visible rectangle in screen coords */
  82     RECT         device_rect;      /* rectangle for the whole device */
  83     int          pixel_format;     /* pixel format (for memory DCs) */
  84     UINT         aa_flags;         /* anti-aliasing flags to pass to GetGlyphOutline for current font */
  85     FLOAT        miterLimit;
  86
  87     int           flags;
  88     DWORD         layout;
  89     HRGN          hClipRgn;      /* Clip region */
  90     HRGN          hMetaRgn;      /* Meta region */
  91     HRGN          hVisRgn;       /* Visible region */
  92     HRGN          region;        /* Total DC region (intersection of clip and visible) */
  93     HPEN          hPen;
  94     HBRUSH        hBrush;
  95     HFONT         hFont;
  96     HBITMAP       hBitmap;
  97     HPALETTE      hPalette;
  98
  99     struct gdi_path *path;
 100
 101     UINT          font_code_page;
 102     WORD          ROPmode;
 103     WORD          polyFillMode;
 104     WORD          stretchBltMode;
 105     WORD          relAbsMode;
 106     WORD          backgroundMode;
 107     COLORREF      backgroundColor;
 108     COLORREF      textColor;
 109     COLORREF      dcBrushColor;
 110     COLORREF      dcPenColor;
 111     POINT         brush_org;
 112
 113     DWORD         mapperFlags;       /* Font mapper flags */
 114     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 115     INT           charExtra;         /* Spacing from SetTextCharacterExtra() */
 116     INT           breakExtra;        /* breakTotalExtra / breakCount */
 117     INT           breakRem;          /* breakTotalExtra % breakCount */
 118     INT           MapMode;
 119     INT           GraphicsMode;      /* Graphics mode */
 120     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 121     POINT         cur_pos;           /* Current position */
 122     INT           ArcDirection;
 123     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 124     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 125     XFORM         xformVport2World;  /* Inverse of the above transformation */
 126     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 127     RECT          bounds;            /* Current bounding rect */
 128 } DC;
 129
 130 /* Certain functions will do no further processing if the driver returns this.
 131    Used by mfdrv for example. */
 132 #define GDI_NO_MORE_WORK 2
 133
 134 /* Rounds a floating point number to integer. The world-to-viewport
 135  * transformation process is done in floating point internally. This function
 136  * is then used to round these coordinates to integer values.
 137  */
 138 static inline INT GDI_ROUND(double val)
 139 {
 140    return (int)floor(val + 0.5);
 141 }
 142
 143 #define GET_DC_PHYSDEV(dc,func) \
 144     get_physdev_entry_point( (dc)->physDev, FIELD_OFFSET(struct gdi_dc_funcs,func))
 145
 146 static inline PHYSDEV pop_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
 147 {
 148     PHYSDEV dev, *pdev = &dc->physDev;
 149     while (*pdev && (*pdev)->funcs != funcs) pdev = &(*pdev)->next;
 150     if (!*pdev) return NULL;
 151     dev = *pdev;
 152     *pdev = dev->next;
 153     return dev;
 154 }
 155
 156 static inline PHYSDEV find_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
 157 {
 158     PHYSDEV dev;
 159
 160     for (dev = dc->physDev; dev; dev = dev->next) if (dev->funcs == funcs) return dev;
 161     return NULL;
 162 }
 163
 164 /* bitmap object */
 165
 166 typedef struct tagBITMAPOBJ
 167 {
 168     DIBSECTION          dib;
 169     SIZE                size;   /* For SetBitmapDimension() */
 170     RGBQUAD            *color_table;  /* DIB color table if <= 8bpp (always 1 << bpp in size) */
 171 } BITMAPOBJ;
 172
 173 static inline BOOL is_bitmapobj_dib( const BITMAPOBJ *bmp )
 174 {
 175     return bmp->dib.dsBmih.biSize != 0;
 176 }
 177
 178 /* bidi.c */
 179
 180 /* Wine_GCPW Flags */
 181 /* Directionality -
 182  * LOOSE means taking the directionality of the first strong character, if there is found one.
 183  * FORCE means the paragraph direction is forced. (RLE/LRE)
 184  */
 185 #define WINE_GCPW_FORCE_LTR 0
 186 #define WINE_GCPW_FORCE_RTL 1
 187 #define WINE_GCPW_LOOSE_LTR 2
 188 #define WINE_GCPW_LOOSE_RTL 3
 189 #define WINE_GCPW_DIR_MASK 3
 190 #define WINE_GCPW_LOOSE_MASK 2
 191
 192 extern BOOL BIDI_Reorder( HDC hDC, LPCWSTR lpString, INT uCount, DWORD dwFlags, DWORD dwWineGCP_Flags,
 193                           LPWSTR lpOutString, INT uCountOut, UINT *lpOrder, WORD **lpGlyphs, INT* cGlyphs ) DECLSPEC_HIDDEN;
 194
 195 /* bitblt.c */
 196 extern DWORD convert_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
 197                            BITMAPINFO *dst_info, struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 198 extern BOOL intersect_vis_rectangles( struct bitblt_coords *dst, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 199 extern DWORD stretch_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
 200                            BITMAPINFO *dst_info, struct bitblt_coords *dst,
 201                            struct gdi_image_bits *bits, int mode ) DECLSPEC_HIDDEN;
 202 extern void get_mono_dc_colors( DC *dc, BITMAPINFO *info, int count ) DECLSPEC_HIDDEN;
 203
 204 /* brush.c */
 205 extern BOOL store_brush_pattern( LOGBRUSH *brush, struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
 206 extern void free_brush_pattern( struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
 207 extern BOOL get_brush_bitmap_info( HBRUSH handle, BITMAPINFO *info, void **bits, UINT *usage ) DECLSPEC_HIDDEN;
 208
 209 /* clipping.c */
 210 extern BOOL clip_device_rect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
 211 extern BOOL clip_visrect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
 212 extern void update_dc_clipping( DC * dc ) DECLSPEC_HIDDEN;
 213
 214 /* Return the total DC region (if any) */
 215 static inline HRGN get_dc_region( DC *dc )
 216 {
 217     if (dc->region) return dc->region;
 218     if (dc->hVisRgn) return dc->hVisRgn;
 219     if (dc->hClipRgn) return dc->hClipRgn;
 220     return dc->hMetaRgn;
 221 }
 222
 223 /* dc.c */
 224 extern DC *alloc_dc_ptr( WORD magic ) DECLSPEC_HIDDEN;
 225 extern void free_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 226 extern DC *get_dc_ptr( HDC hdc ) DECLSPEC_HIDDEN;
 227 extern void release_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 228 extern void update_dc( DC *dc ) DECLSPEC_HIDDEN;
 229 extern void DC_InitDC( DC * dc ) DECLSPEC_HIDDEN;
 230 extern void DC_UpdateXforms( DC * dc ) DECLSPEC_HIDDEN;
 231
 232 /* dib.c */
 233 extern int bitmap_info_size( const BITMAPINFO * info, WORD coloruse ) DECLSPEC_HIDDEN;
 234 extern BOOL fill_color_table_from_pal_colors( BITMAPINFO *info, HDC hdc ) DECLSPEC_HIDDEN;
 235 extern const RGBQUAD *get_default_color_table( int bpp ) DECLSPEC_HIDDEN;
 236 extern void fill_default_color_table( BITMAPINFO *info ) DECLSPEC_HIDDEN;
 237 extern void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) DECLSPEC_HIDDEN;
 238 extern BITMAPINFO *copy_packed_dib( const BITMAPINFO *src_info, UINT usage ) DECLSPEC_HIDDEN;
 239 extern DWORD convert_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 240                                  const BITMAPINFO *dst_info, void *dst_bits ) DECLSPEC_HIDDEN;
 241
 242 extern DWORD stretch_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 243                                  const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
 244                                  INT mode ) DECLSPEC_HIDDEN;
 245 extern DWORD blend_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 246                                const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
 247                                BLENDFUNCTION blend ) DECLSPEC_HIDDEN;
 248 extern DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_array, ULONG nvert,
 249                                   void *grad_array, ULONG ngrad, ULONG mode, const POINT *dev_pts, HRGN rgn ) DECLSPEC_HIDDEN;
 250 extern COLORREF get_pixel_bitmapinfo( const BITMAPINFO *info, void *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 251 extern BOOL render_aa_text_bitmapinfo( HDC hdc, BITMAPINFO *info, struct gdi_image_bits *bits,
 252                                        struct bitblt_coords *src, INT x, INT y, UINT flags,
 253                                        UINT aa_flags, LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
 254 extern DWORD get_image_from_bitmap( BITMAPOBJ *bmp, BITMAPINFO *info,
 255                                     struct gdi_image_bits *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 256 extern DWORD put_image_into_bitmap( BITMAPOBJ *bmp, HRGN clip, BITMAPINFO *info,
 257                                     const struct gdi_image_bits *bits, struct bitblt_coords *src,
 258                                     struct bitblt_coords *dst ) DECLSPEC_HIDDEN;
 259 extern void dibdrv_set_window_surface( DC *dc, struct window_surface *surface ) DECLSPEC_HIDDEN;
 260
 261 /* driver.c */
 262 extern const struct gdi_dc_funcs null_driver DECLSPEC_HIDDEN;
 263 extern const struct gdi_dc_funcs dib_driver DECLSPEC_HIDDEN;
 264 extern const struct gdi_dc_funcs path_driver DECLSPEC_HIDDEN;
 265 extern const struct gdi_dc_funcs *font_driver DECLSPEC_HIDDEN;
 266 extern const struct gdi_dc_funcs *DRIVER_load_driver( LPCWSTR name ) DECLSPEC_HIDDEN;
 267 extern BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size ) DECLSPEC_HIDDEN;
 268
 269 /* enhmetafile.c */
 270 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk ) DECLSPEC_HIDDEN;
 271
 272 /* freetype.c */
 273
 274 /* Undocumented structure filled in by GetFontRealizationInfo */
 275 struct font_realization_info
 276 {
 277     DWORD size;        /* could be 16 or 24 */
 278     DWORD flags;       /* 1 for bitmap fonts, 3 for scalable fonts */
 279     DWORD cache_num;   /* keeps incrementing - num of fonts that have been created allowing for caching?? */
 280     DWORD instance_id; /* identifies a realized font instance */
 281     DWORD unk;         /* unknown */
 282     WORD  face_index;  /* face index in case of font collections */
 283     WORD  simulations; /* 0 bit - bold simulation, 1 bit - oblique simulation */
 284 };
 285
 286 extern INT WineEngAddFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
 287 extern HANDLE WineEngAddFontMemResourceEx(PVOID, DWORD, PVOID, LPDWORD) DECLSPEC_HIDDEN;
 288 extern BOOL WineEngCreateScalableFontResource(DWORD, LPCWSTR, LPCWSTR, LPCWSTR) DECLSPEC_HIDDEN;
 289 extern BOOL WineEngInit(void) DECLSPEC_HIDDEN;
 290 extern BOOL WineEngRemoveFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
 291
 292 /* gdiobj.c */
 293 extern HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
 294 extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 295 extern HGDIOBJ get_full_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 296 extern void *GDI_GetObjPtr( HGDIOBJ, WORD ) DECLSPEC_HIDDEN;
 297 extern void *get_any_obj_ptr( HGDIOBJ, WORD * ) DECLSPEC_HIDDEN;
 298 extern void GDI_ReleaseObj( HGDIOBJ ) DECLSPEC_HIDDEN;
 299 extern void GDI_CheckNotLock(void) DECLSPEC_HIDDEN;
 300 extern UINT GDI_get_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 301 extern HGDIOBJ GDI_inc_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 302 extern BOOL GDI_dec_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 303 extern void GDI_hdc_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
 304 extern void GDI_hdc_not_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
 305
 306 /* mapping.c */
 307 extern void lp_to_dp( DC *dc, POINT *points, INT count ) DECLSPEC_HIDDEN;
 308
 309 /* metafile.c */
 310 extern HMETAFILE MF_Create_HMETAFILE(METAHEADER *mh) DECLSPEC_HIDDEN;
 311 extern METAHEADER *MF_CreateMetaHeaderDisk(METAHEADER *mr, LPCVOID filename, BOOL unicode ) DECLSPEC_HIDDEN;
 312
 313 /* Format of comment record added by GetWinMetaFileBits */
 314 #include <pshpack2.h>
 315 typedef struct
 316 {
 317     DWORD magic;   /* WMFC */
 318     WORD unk04;    /* 1 */
 319     WORD unk06;    /* 0 */
 320     WORD unk08;    /* 0 */
 321     WORD unk0a;    /* 1 */
 322     WORD checksum;
 323     DWORD unk0e;   /* 0 */
 324     DWORD num_chunks;
 325     DWORD chunk_size;
 326     DWORD remaining_size;
 327     DWORD emf_size;
 328     BYTE emf_data[1];
 329 } emf_in_wmf_comment;
 330 #include <poppack.h>
 331
 332 #define WMFC_MAGIC 0x43464d57
 333
 334 /* path.c */
 335
 336 extern void free_gdi_path( struct gdi_path *path ) DECLSPEC_HIDDEN;
 337 extern struct gdi_path *get_gdi_flat_path( HDC hdc, HRGN *rgn ) DECLSPEC_HIDDEN;
 338 extern int get_gdi_path_data( struct gdi_path *path, POINT **points, BYTE **flags ) DECLSPEC_HIDDEN;
 339 extern BOOL PATH_SavePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
 340 extern BOOL PATH_RestorePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
 341
 342 /* painting.c */
 343 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut ) DECLSPEC_HIDDEN;
 344
 345 /* palette.c */
 346 extern HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg) DECLSPEC_HIDDEN;
 347 extern UINT WINAPI GDIRealizePalette( HDC hdc ) DECLSPEC_HIDDEN;
 348 extern HPALETTE PALETTE_Init(void) DECLSPEC_HIDDEN;
 349
 350 /* region.c */
 351 extern BOOL add_rect_to_region( HRGN rgn, const RECT *rect ) DECLSPEC_HIDDEN;
 352 extern INT mirror_region( HRGN dst, HRGN src, INT width ) DECLSPEC_HIDDEN;
 353 extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN;
 354
 355 #define RGN_DEFAULT_RECTS 4
 356 typedef struct
 357 {
 358     INT size;
 359     INT numRects;
 360     RECT *rects;
 361     RECT extents;
 362     RECT rects_buf[RGN_DEFAULT_RECTS];
 363 } WINEREGION;
 364
 365 /* return the region data without making a copy */
 366 static inline const WINEREGION *get_wine_region(HRGN rgn)
 367 {
 368     return GDI_GetObjPtr( rgn, OBJ_REGION );
 369 }
 370 static inline void release_wine_region(HRGN rgn)
 371 {
 372     GDI_ReleaseObj(rgn);
 373 }
 374
 375 /**********************************************************
 376  *     region_find_pt
 377  *
 378  * Return either the index of the rectangle that contains (x,y) or the first
 379  * rectangle after it.  Sets *hit to TRUE if the region contains (x,y).
 380  * Note if (x,y) follows all rectangles, then the return value will be rgn->numRects.
 381  */
 382 static inline int region_find_pt( const WINEREGION *rgn, int x, int y, BOOL *hit )
 383 {
 384     int i, start = 0, end = rgn->numRects - 1;
 385     BOOL h = FALSE;
 386
 387     while (start <= end)
 388     {
 389         i = (start + end) / 2;
 390
 391         if (rgn->rects[i].bottom <= y ||
 392             (rgn->rects[i].top <= y && rgn->rects[i].right <= x))
 393             start = i + 1;
 394         else if (rgn->rects[i].top > y ||
 395                  (rgn->rects[i].bottom > y && rgn->rects[i].left > x))
 396             end = i - 1;
 397         else
 398         {
 399             h = TRUE;
 400             break;
 401         }
 402     }
 403
 404     if (hit) *hit = h;
 405     return h ? i : start;
 406 }
 407
 408 /* null driver entry points */
 409 extern BOOL nulldrv_AbortPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 410 extern BOOL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
 411                                 PHYSDEV src_dev, struct bitblt_coords *src, BLENDFUNCTION func) DECLSPEC_HIDDEN;
 412 extern BOOL nulldrv_AngleArc( PHYSDEV dev, INT x, INT y, DWORD radius, FLOAT start, FLOAT sweep ) DECLSPEC_HIDDEN;
 413 extern BOOL nulldrv_ArcTo( PHYSDEV dev, INT left, INT top, INT right, INT bottom, INT xstart, INT ystart, INT xend, INT yend ) DECLSPEC_HIDDEN;
 414 extern BOOL nulldrv_BeginPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 415 extern DWORD nulldrv_BlendImage( PHYSDEV dev, BITMAPINFO *info, const struct gdi_image_bits *bits,
 416                                  struct bitblt_coords *src, struct bitblt_coords *dst, BLENDFUNCTION func ) DECLSPEC_HIDDEN;
 417 extern BOOL nulldrv_CloseFigure( PHYSDEV dev ) DECLSPEC_HIDDEN;
 418 extern BOOL nulldrv_EndPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 419 extern INT  nulldrv_ExcludeClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 420 extern INT  nulldrv_ExtSelectClipRgn( PHYSDEV dev, HRGN rgn, INT mode ) DECLSPEC_HIDDEN;
 421 extern BOOL nulldrv_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags, const RECT *rect,
 422                                 LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
 423 extern BOOL nulldrv_FillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 424 extern BOOL nulldrv_FillRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush ) DECLSPEC_HIDDEN;
 425 extern BOOL nulldrv_FlattenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 426 extern BOOL nulldrv_FrameRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush, INT width, INT height ) DECLSPEC_HIDDEN;
 427 extern LONG nulldrv_GetBitmapBits( HBITMAP bitmap, void *bits, LONG size ) DECLSPEC_HIDDEN;
 428 extern COLORREF nulldrv_GetNearestColor( PHYSDEV dev, COLORREF color ) DECLSPEC_HIDDEN;
 429 extern COLORREF nulldrv_GetPixel( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 430 extern UINT nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries ) DECLSPEC_HIDDEN;
 431 extern BOOL nulldrv_GradientFill( PHYSDEV dev, TRIVERTEX *vert_array, ULONG nvert,
 432                                   void * grad_array, ULONG ngrad, ULONG mode ) DECLSPEC_HIDDEN;
 433 extern INT  nulldrv_IntersectClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 434 extern BOOL nulldrv_InvertRgn( PHYSDEV dev, HRGN rgn ) DECLSPEC_HIDDEN;
 435 extern BOOL nulldrv_ModifyWorldTransform( PHYSDEV dev, const XFORM *xform, DWORD mode ) DECLSPEC_HIDDEN;
 436 extern INT  nulldrv_OffsetClipRgn( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 437 extern BOOL nulldrv_OffsetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 438 extern BOOL nulldrv_OffsetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 439 extern BOOL nulldrv_PolyBezier( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 440 extern BOOL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 441 extern BOOL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count ) DECLSPEC_HIDDEN;
 442 extern BOOL nulldrv_PolylineTo( PHYSDEV dev, const POINT *points, INT count ) DECLSPEC_HIDDEN;
 443 extern BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level ) DECLSPEC_HIDDEN;
 444 extern INT  nulldrv_SaveDC( PHYSDEV dev ) DECLSPEC_HIDDEN;
 445 extern BOOL nulldrv_ScaleViewportExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
 446 extern BOOL nulldrv_ScaleWindowExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
 447 extern BOOL nulldrv_SelectClipPath( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
 448 extern HFONT nulldrv_SelectFont( PHYSDEV dev, HFONT font, UINT *ggo_flags ) DECLSPEC_HIDDEN;
 449 extern INT nulldrv_SetDIBitsToDevice( PHYSDEV dev, INT x_dst, INT y_dst, DWORD width, DWORD height,
 450                                       INT x_src, INT y_src, UINT start, UINT lines,
 451                                       const void *bits, BITMAPINFO *info, UINT coloruse ) DECLSPEC_HIDDEN;
 452 extern INT  nulldrv_SetMapMode( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
 453 extern BOOL nulldrv_SetViewportExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
 454 extern BOOL nulldrv_SetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 455 extern BOOL nulldrv_SetWindowExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
 456 extern BOOL nulldrv_SetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 457 extern BOOL nulldrv_SetWorldTransform( PHYSDEV dev, const XFORM *xform ) DECLSPEC_HIDDEN;
 458 extern BOOL nulldrv_StretchBlt( PHYSDEV dst_dev, struct bitblt_coords *dst,
 459                                 PHYSDEV src_dev, struct bitblt_coords *src, DWORD rop ) DECLSPEC_HIDDEN;
 460 extern INT  nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
 461                                    INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
 462                                    BITMAPINFO *info, UINT coloruse, DWORD rop ) DECLSPEC_HIDDEN;
 463 extern BOOL nulldrv_StrokeAndFillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 464 extern BOOL nulldrv_StrokePath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 465 extern BOOL nulldrv_WidenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 466
 467 static inline DC *get_nulldrv_dc( PHYSDEV dev )
 468 {
 469     return CONTAINING_RECORD( dev, DC, nulldrv );
 470 }
 471
 472 static inline DC *get_physdev_dc( PHYSDEV dev )
 473 {
 474     while (dev->funcs != &null_driver)
 475         dev = dev->next;
 476     return get_nulldrv_dc( dev );
 477 }
 478
 479 /* Undocumented value for DIB's iUsage: Indicates a mono DIB w/o pal entries */
 480 #define DIB_PAL_MONO 2
 481
 482 BOOL WINAPI FontIsLinked(HDC);
 483
 484 BOOL WINAPI SetVirtualResolution(HDC hdc, DWORD horz_res, DWORD vert_res, DWORD horz_size, DWORD vert_size);
 485
 486 static inline BOOL is_rect_empty( const RECT *rect )
 487 {
 488     return (rect->left >= rect->right || rect->top >= rect->bottom);
 489 }
 490
 491 static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
 492 {
 493     dst->left   = max( src1->left, src2->left );
 494     dst->top    = max( src1->top, src2->top );
 495     dst->right  = min( src1->right, src2->right );
 496     dst->bottom = min( src1->bottom, src2->bottom );
 497     return !is_rect_empty( dst );
 498 }
 499
 500 static inline void offset_rect( RECT *rect, int offset_x, int offset_y )
 501 {
 502     rect->left   += offset_x;
 503     rect->top    += offset_y;
 504     rect->right  += offset_x;
 505     rect->bottom += offset_y;
 506 }
 507
 508 static inline void order_rect( RECT *rect )
 509 {
 510     if (rect->left > rect->right)
 511     {
 512         int tmp = rect->left;
 513         rect->left = rect->right;
 514         rect->right = tmp;
 515     }
 516     if (rect->top > rect->bottom)
 517     {
 518         int tmp = rect->top;
 519         rect->top = rect->bottom;
 520         rect->bottom = tmp;
 521     }
 522 }
 523
 524 static inline void get_bounding_rect( RECT *rect, int x, int y, int width, int height )
 525 {
 526     rect->left   = x;
 527     rect->right  = x + width;
 528     rect->top    = y;
 529     rect->bottom = y + height;
 530     if (rect->left > rect->right)
 531     {
 532         int tmp = rect->left;
 533         rect->left = rect->right + 1;
 534         rect->right = tmp + 1;
 535     }
 536     if (rect->top > rect->bottom)
 537     {
 538         int tmp = rect->top;
 539         rect->top = rect->bottom + 1;
 540         rect->bottom = tmp + 1;
 541     }
 542 }
 543
 544 static inline void reset_bounds( RECT *bounds )
 545 {
 546     bounds->left = bounds->top = INT_MAX;
 547     bounds->right = bounds->bottom = INT_MIN;
 548 }
 549
 550 static inline void add_bounds_rect( RECT *bounds, const RECT *rect )
 551 {
 552     if (is_rect_empty( rect )) return;
 553     bounds->left   = min( bounds->left, rect->left );
 554     bounds->top    = min( bounds->top, rect->top );
 555     bounds->right  = max( bounds->right, rect->right );
 556     bounds->bottom = max( bounds->bottom, rect->bottom );
 557 }
 558
 559 static inline int get_bitmap_stride( int width, int bpp )
 560 {
 561     return ((width * bpp + 15) >> 3) & ~1;
 562 }
 563
 564 static inline int get_dib_stride( int width, int bpp )
 565 {
 566     return ((width * bpp + 31) >> 3) & ~3;
 567 }
 568
 569 static inline int get_dib_image_size( const BITMAPINFO *info )
 570 {
 571     return get_dib_stride( info->bmiHeader.biWidth, info->bmiHeader.biBitCount )
 572         * abs( info->bmiHeader.biHeight );
 573 }
 574
 575 /* only for use on sanitized BITMAPINFO structures */
 576 static inline int get_dib_info_size( const BITMAPINFO *info, UINT coloruse )
 577 {
 578     if (info->bmiHeader.biCompression == BI_BITFIELDS)
 579         return sizeof(BITMAPINFOHEADER) + 3 * sizeof(DWORD);
 580     if (coloruse == DIB_PAL_COLORS)
 581         return sizeof(BITMAPINFOHEADER) + info->bmiHeader.biClrUsed * sizeof(WORD);
 582     return FIELD_OFFSET( BITMAPINFO, bmiColors[info->bmiHeader.biClrUsed] );
 583 }
 584
 585 /* only for use on sanitized BITMAPINFO structures */
 586 static inline void copy_bitmapinfo( BITMAPINFO *dst, const BITMAPINFO *src )
 587 {
 588     memcpy( dst, src, get_dib_info_size( src, DIB_RGB_COLORS ));
 589 }
 590
 591 extern void free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 592
 593 extern HMODULE gdi32_module DECLSPEC_HIDDEN;
 594
 595 #endif /* __WINE_GDI_PRIVATE_H */