dlls/win32u/ntgdi_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_NTGDI_PRIVATE_H
  22 #define __WINE_NTGDI_PRIVATE_H
  23
  24 #include <limits.h>
  25 #include <math.h>
  26 #include <stdlib.h>
  27 #include "win32u_private.h"
  28
  29 /* extra stock object: default 1x1 bitmap for memory DCs */
  30 #define DEFAULT_BITMAP (STOCK_LAST+1)
  31
  32 struct gdi_obj_funcs
  33 {
  34     INT     (*pGetObjectW)( HGDIOBJ handle, INT count, LPVOID buffer );
  35     BOOL    (*pUnrealizeObject)( HGDIOBJ handle );
  36     BOOL    (*pDeleteObject)( HGDIOBJ handle );
  37 };
  38
  39 struct gdi_obj_header
  40 {
  41     const struct gdi_obj_funcs *funcs;       /* type-specific functions */
  42     WORD                        selcount;    /* number of times the object is selected in a DC */
  43     WORD                        system : 1;  /* system object flag */
  44     WORD                        deleted : 1; /* whether DeleteObject has been called on this object */
  45 };
  46
  47 typedef struct tagDC
  48 {
  49     struct gdi_obj_header obj;     /* object header */
  50     HDC          hSelf;            /* Handle to this DC */
  51     struct gdi_physdev nulldrv;    /* physdev for the null driver */
  52     PHYSDEV      physDev;          /* current top of the physdev stack */
  53     DWORD        thread;           /* thread owning the DC */
  54     LONG         refcount;         /* thread refcount */
  55     LONG         dirty;            /* dirty flag */
  56     DC_ATTR     *attr;             /* DC attributes accessible by client */
  57     struct tagDC *saved_dc;
  58     DWORD_PTR    dwHookData;
  59     DCHOOKPROC   hookProc;         /* DC hook */
  60     BOOL         bounds_enabled:1; /* bounds tracking is enabled */
  61     BOOL         path_open:1;      /* path is currently open (only for saved DCs) */
  62
  63     RECT         device_rect;      /* rectangle for the whole device */
  64     int          pixel_format;     /* pixel format (for memory DCs) */
  65     UINT         aa_flags;         /* anti-aliasing flags to pass to GetGlyphOutline for current font */
  66     WCHAR        display[CCHDEVICENAME]; /* Display name when created for a specific display device */
  67
  68     int           flags;
  69     HRGN          hClipRgn;      /* Clip region */
  70     HRGN          hMetaRgn;      /* Meta region */
  71     HRGN          hVisRgn;       /* Visible region */
  72     HRGN          region;        /* Total DC region (intersection of clip and visible) */
  73     HPEN          hPen;
  74     HBRUSH        hBrush;
  75     HFONT         hFont;
  76     HBITMAP       hBitmap;
  77     HPALETTE      hPalette;
  78
  79     struct gdi_path *path;
  80
  81     const struct font_gamma_ramp *font_gamma_ramp;
  82
  83     INT           breakExtra;        /* breakTotalExtra / breakCount */
  84     INT           breakRem;          /* breakTotalExtra % breakCount */
  85     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
  86     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
  87     XFORM         xformVport2World;  /* Inverse of the above transformation */
  88     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
  89     RECT          bounds;            /* Current bounding rect */
  90 } DC;
  91
  92 /* Certain functions will do no further processing if the driver returns this.
  93    Used by mfdrv for example. */
  94 #define GDI_NO_MORE_WORK 2
  95
  96 /* Rounds a floating point number to integer. The world-to-viewport
  97  * transformation process is done in floating point internally. This function
  98  * is then used to round these coordinates to integer values.
  99  */
 100 static inline INT GDI_ROUND(double val)
 101 {
 102    return (int)floor(val + 0.5);
 103 }
 104
 105 #define GET_DC_PHYSDEV(dc,func) \
 106     get_physdev_entry_point( (dc)->physDev, FIELD_OFFSET(struct gdi_dc_funcs,func))
 107
 108 static inline PHYSDEV pop_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
 109 {
 110     PHYSDEV dev, *pdev = &dc->physDev;
 111     while (*pdev && (*pdev)->funcs != funcs) pdev = &(*pdev)->next;
 112     if (!*pdev) return NULL;
 113     dev = *pdev;
 114     *pdev = dev->next;
 115     return dev;
 116 }
 117
 118 static inline PHYSDEV find_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
 119 {
 120     PHYSDEV dev;
 121
 122     for (dev = dc->physDev; dev; dev = dev->next) if (dev->funcs == funcs) return dev;
 123     return NULL;
 124 }
 125
 126 /* bitmap object */
 127
 128 typedef struct tagBITMAPOBJ
 129 {
 130     struct gdi_obj_header obj;
 131     DIBSECTION            dib;
 132     SIZE                  size;   /* For SetBitmapDimension() */
 133     RGBQUAD              *color_table;  /* DIB color table if <= 8bpp (always 1 << bpp in size) */
 134 } BITMAPOBJ;
 135
 136 static inline BOOL is_bitmapobj_dib( const BITMAPOBJ *bmp )
 137 {
 138     return bmp->dib.dsBmih.biSize != 0;
 139 }
 140
 141 /* bitblt.c */
 142 extern DWORD convert_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
 143                            BITMAPINFO *dst_info, struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 144 extern BOOL intersect_vis_rectangles( struct bitblt_coords *dst, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 145 extern DWORD stretch_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
 146                            BITMAPINFO *dst_info, struct bitblt_coords *dst,
 147                            struct gdi_image_bits *bits, int mode ) DECLSPEC_HIDDEN;
 148 extern void get_mono_dc_colors( DC *dc, int color_table_size, BITMAPINFO *info, int count ) DECLSPEC_HIDDEN;
 149
 150 /* brush.c */
 151 extern HBRUSH create_brush( const LOGBRUSH *brush );
 152 extern BOOL store_brush_pattern( LOGBRUSH *brush, struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
 153 extern void free_brush_pattern( struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
 154
 155 /* clipping.c */
 156 extern BOOL clip_device_rect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
 157 extern BOOL clip_visrect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
 158 extern void update_dc_clipping( DC * dc ) DECLSPEC_HIDDEN;
 159
 160 /* Return the total DC region (if any) */
 161 static inline HRGN get_dc_region( DC *dc )
 162 {
 163     if (dc->region) return dc->region;
 164     if (dc->hVisRgn) return dc->hVisRgn;
 165     if (dc->hClipRgn) return dc->hClipRgn;
 166     return dc->hMetaRgn;
 167 }
 168
 169 /* dc.c */
 170 extern DC *alloc_dc_ptr( DWORD magic ) DECLSPEC_HIDDEN;
 171 extern void free_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 172 extern DC *get_dc_ptr( HDC hdc ) DECLSPEC_HIDDEN;
 173 extern void release_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 174 extern void update_dc( DC *dc ) DECLSPEC_HIDDEN;
 175 extern void DC_InitDC( DC * dc ) DECLSPEC_HIDDEN;
 176 extern void DC_UpdateXforms( DC * dc ) DECLSPEC_HIDDEN;
 177
 178 /* dib.c */
 179 extern BOOL fill_color_table_from_pal_colors( BITMAPINFO *info, HDC hdc ) DECLSPEC_HIDDEN;
 180 extern const RGBQUAD *get_default_color_table( int bpp ) DECLSPEC_HIDDEN;
 181 extern void fill_default_color_table( BITMAPINFO *info ) DECLSPEC_HIDDEN;
 182 extern void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) DECLSPEC_HIDDEN;
 183 extern BITMAPINFO *copy_packed_dib( const BITMAPINFO *src_info, UINT usage ) DECLSPEC_HIDDEN;
 184 extern DWORD convert_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 185                                  const BITMAPINFO *dst_info, void *dst_bits ) DECLSPEC_HIDDEN;
 186
 187 extern DWORD stretch_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 188                                  const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
 189                                  INT mode ) DECLSPEC_HIDDEN;
 190 extern DWORD blend_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 191                                const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
 192                                BLENDFUNCTION blend ) DECLSPEC_HIDDEN;
 193 extern DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_array, ULONG nvert,
 194                                   void *grad_array, ULONG ngrad, ULONG mode, const POINT *dev_pts, HRGN rgn ) DECLSPEC_HIDDEN;
 195 extern COLORREF get_pixel_bitmapinfo( const BITMAPINFO *info, void *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 196 extern BOOL render_aa_text_bitmapinfo( DC *dc, BITMAPINFO *info, struct gdi_image_bits *bits,
 197                                        struct bitblt_coords *src, INT x, INT y, UINT flags,
 198                                        UINT aa_flags, LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
 199 extern DWORD get_image_from_bitmap( BITMAPOBJ *bmp, BITMAPINFO *info,
 200                                     struct gdi_image_bits *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 201 extern DWORD put_image_into_bitmap( BITMAPOBJ *bmp, HRGN clip, BITMAPINFO *info,
 202                                     const struct gdi_image_bits *bits, struct bitblt_coords *src,
 203                                     struct bitblt_coords *dst ) DECLSPEC_HIDDEN;
 204 extern UINT get_dib_dc_color_table( HDC hdc, UINT startpos, UINT entries,
 205                                     RGBQUAD *colors ) DECLSPEC_HIDDEN;
 206 extern UINT set_dib_dc_color_table( HDC hdc, UINT startpos, UINT entries,
 207                                     const RGBQUAD *colors ) DECLSPEC_HIDDEN;
 208 extern void dibdrv_set_window_surface( DC *dc, struct window_surface *surface ) DECLSPEC_HIDDEN;
 209
 210 /* driver.c */
 211 extern const struct gdi_dc_funcs null_driver DECLSPEC_HIDDEN;
 212 extern const struct gdi_dc_funcs dib_driver DECLSPEC_HIDDEN;
 213 extern const struct gdi_dc_funcs path_driver DECLSPEC_HIDDEN;
 214 extern const struct gdi_dc_funcs font_driver DECLSPEC_HIDDEN;
 215 extern const struct gdi_dc_funcs *get_display_driver(void) DECLSPEC_HIDDEN;
 216 extern void CDECL set_display_driver( void *proc ) DECLSPEC_HIDDEN;
 217
 218 /* font.c */
 219
 220 struct font_gamma_ramp
 221 {
 222     DWORD gamma;
 223     BYTE  encode[256];
 224     BYTE  decode[256];
 225 };
 226
 227 typedef struct { FLOAT eM11, eM12, eM21, eM22; } FMAT2;
 228
 229 struct bitmap_font_size
 230 {
 231     int  width;
 232     int  height;
 233     int  size;
 234     int  x_ppem;
 235     int  y_ppem;
 236     int  internal_leading;
 237 };
 238
 239 struct gdi_font
 240 {
 241     struct list            entry;
 242     struct list            unused_entry;
 243     DWORD                  refcount;
 244     DWORD                  gm_size;
 245     struct glyph_metrics **gm;
 246     OUTLINETEXTMETRICW     otm;
 247     KERNINGPAIR           *kern_pairs;
 248     int                    kern_count;
 249     /* the following members can be accessed without locking, they are never modified after creation */
 250     void                  *private;  /* font backend private data */
 251     struct list            child_fonts;
 252     DWORD                  handle;
 253     DWORD                  cache_num;
 254     DWORD                  hash;
 255     UINT                   charset;
 256     UINT                   codepage;
 257     FONTSIGNATURE          fs;
 258     LOGFONTW               lf;
 259     FMAT2                  matrix;
 260     UINT                   face_index;
 261     INT                    scale_y;
 262     INT                    aveWidth;
 263     INT                    ppem;
 264     SHORT                  yMax;
 265     SHORT                  yMin;
 266     UINT                   ntmFlags;
 267     UINT                   ntmAvgWidth;
 268     UINT                   aa_flags;
 269     ULONG                  ttc_item_offset;    /* 0 if font is not a part of TrueType collection */
 270     BOOL                   can_use_bitmap : 1;
 271     BOOL                   fake_italic : 1;
 272     BOOL                   fake_bold : 1;
 273     BOOL                   scalable : 1;
 274     BOOL                   use_logfont_name : 1;
 275     struct gdi_font       *base_font;
 276     void                  *gsub_table;
 277     void                  *vert_feature;
 278     void                  *data_ptr;
 279     SIZE_T                 data_size;
 280     FILETIME               writetime;
 281     WCHAR                  file[1];
 282 };
 283
 284 #define MS_MAKE_TAG(ch1,ch2,ch3,ch4) \
 285     (((DWORD)ch4 << 24) | ((DWORD)ch3 << 16) | ((DWORD)ch2 << 8) | (DWORD)ch1)
 286
 287 #define MS_GASP_TAG MS_MAKE_TAG('g', 'a', 's', 'p')
 288 #define MS_GSUB_TAG MS_MAKE_TAG('G', 'S', 'U', 'B')
 289 #define MS_KERN_TAG MS_MAKE_TAG('k', 'e', 'r', 'n')
 290 #define MS_TTCF_TAG MS_MAKE_TAG('t', 't', 'c', 'f')
 291 #define MS_VDMX_TAG MS_MAKE_TAG('V', 'D', 'M', 'X')
 292
 293 #define FS_DBCS_MASK (FS_JISJAPAN | FS_CHINESESIMP | FS_WANSUNG | FS_CHINESETRAD | FS_JOHAB)
 294
 295 #define ADDFONT_EXTERNAL_FONT 0x01
 296 #define ADDFONT_ALLOW_BITMAP  0x02
 297 #define ADDFONT_ADD_TO_CACHE  0x04
 298 #define ADDFONT_ADD_RESOURCE  0x08  /* added through AddFontResource */
 299 #define ADDFONT_VERTICAL_FONT 0x10
 300 #define ADDFONT_EXTERNAL_FOUND 0x20
 301 #define ADDFONT_AA_FLAGS(flags) ((flags) << 16)
 302
 303 struct font_backend_funcs
 304 {
 305     void  (*load_fonts)(void);
 306     BOOL  (*enum_family_fallbacks)( DWORD pitch_and_family, int index, WCHAR buffer[LF_FACESIZE] );
 307     INT   (*add_font)( const WCHAR *file, DWORD flags );
 308     INT   (*add_mem_font)( void *ptr, SIZE_T size, DWORD flags );
 309
 310     BOOL  (*load_font)( struct gdi_font *gdi_font );
 311     DWORD (*get_font_data)( struct gdi_font *gdi_font, DWORD table, DWORD offset,
 312                             void *buf, DWORD count );
 313     UINT  (*get_aa_flags)( struct gdi_font *font, UINT aa_flags, BOOL antialias_fakes );
 314     BOOL  (*get_glyph_index)( struct gdi_font *gdi_font, UINT *glyph, BOOL use_encoding );
 315     UINT  (*get_default_glyph)( struct gdi_font *gdi_font );
 316     DWORD (*get_glyph_outline)( struct gdi_font *font, UINT glyph, UINT format,
 317                                 GLYPHMETRICS *gm, ABC *abc, DWORD buflen, void *buf,
 318                                 const MAT2 *mat, BOOL tategaki );
 319     DWORD (*get_unicode_ranges)( struct gdi_font *font, GLYPHSET *gs );
 320     BOOL  (*get_char_width_info)( struct gdi_font *font, struct char_width_info *info );
 321     BOOL  (*set_outline_text_metrics)( struct gdi_font *font );
 322     BOOL  (*set_bitmap_text_metrics)( struct gdi_font *font );
 323     DWORD (*get_kerning_pairs)( struct gdi_font *gdi_font, KERNINGPAIR **kern_pair );
 324     void  (*destroy_font)( struct gdi_font *font );
 325 };
 326
 327 extern int add_gdi_face( const WCHAR *family_name, const WCHAR *second_name,
 328                          const WCHAR *style, const WCHAR *fullname, const WCHAR *file,
 329                          void *data_ptr, SIZE_T data_size, UINT index, FONTSIGNATURE fs,
 330                          DWORD ntmflags, DWORD version, DWORD flags,
 331                          const struct bitmap_font_size *size ) DECLSPEC_HIDDEN;
 332 extern UINT font_init(void) DECLSPEC_HIDDEN;
 333 extern UINT get_acp(void) DECLSPEC_HIDDEN;
 334 extern CPTABLEINFO *get_cptable( WORD cp ) DECLSPEC_HIDDEN;
 335 extern const struct font_backend_funcs *init_freetype_lib(void) DECLSPEC_HIDDEN;
 336
 337 /* opentype.c */
 338
 339 struct ttc_sfnt_v1;
 340 struct tt_name_v0;
 341
 342 struct opentype_name
 343 {
 344     DWORD codepage;
 345     DWORD length;
 346     const void *bytes;
 347 };
 348
 349 extern BOOL opentype_get_ttc_sfnt_v1( const void *data, size_t size, DWORD index, DWORD *count,
 350                                       const struct ttc_sfnt_v1 **ttc_sfnt_v1 ) DECLSPEC_HIDDEN;
 351 extern BOOL opentype_get_tt_name_v0( const void *data, size_t size, const struct ttc_sfnt_v1 *ttc_sfnt_v1,
 352                                      const struct tt_name_v0 **tt_name_v0 ) DECLSPEC_HIDDEN;
 353
 354 typedef BOOL ( *opentype_enum_names_cb )( LANGID langid, struct opentype_name *name, void *user );
 355 extern BOOL opentype_enum_family_names( const struct tt_name_v0 *tt_name_v0,
 356                                         opentype_enum_names_cb callback, void *user ) DECLSPEC_HIDDEN;
 357 extern BOOL opentype_enum_style_names( const struct tt_name_v0 *tt_name_v0,
 358                                        opentype_enum_names_cb callback, void *user ) DECLSPEC_HIDDEN;
 359 extern BOOL opentype_enum_full_names( const struct tt_name_v0 *tt_name_v0,
 360                                       opentype_enum_names_cb callback, void *user ) DECLSPEC_HIDDEN;
 361
 362 extern BOOL opentype_get_properties( const void *data, size_t size, const struct ttc_sfnt_v1 *ttc_sfnt_v1,
 363                                      DWORD *version, FONTSIGNATURE *fs, DWORD *ntm_flags ) DECLSPEC_HIDDEN;
 364 extern BOOL translate_charset_info( DWORD *src, CHARSETINFO *cs, DWORD flags ) DECLSPEC_HIDDEN;
 365
 366 /* gdiobj.c */
 367 extern HGDIOBJ alloc_gdi_handle( struct gdi_obj_header *obj, DWORD type,
 368                                  const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
 369 extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 370 extern void *GDI_GetObjPtr( HGDIOBJ, DWORD ) DECLSPEC_HIDDEN;
 371 extern void *get_any_obj_ptr( HGDIOBJ, DWORD * ) DECLSPEC_HIDDEN;
 372 extern void GDI_ReleaseObj( HGDIOBJ ) DECLSPEC_HIDDEN;
 373 extern UINT GDI_get_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 374 extern HGDIOBJ GDI_inc_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 375 extern BOOL GDI_dec_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 376 extern DWORD get_system_dpi(void) DECLSPEC_HIDDEN;
 377 extern HGDIOBJ get_stock_object( INT obj ) DECLSPEC_HIDDEN;
 378 extern DWORD get_gdi_object_type( HGDIOBJ obj ) DECLSPEC_HIDDEN;
 379
 380 /* mapping.c */
 381 extern BOOL dp_to_lp( DC *dc, POINT *points, INT count ) DECLSPEC_HIDDEN;
 382 extern void lp_to_dp( DC *dc, POINT *points, INT count ) DECLSPEC_HIDDEN;
 383 extern BOOL set_map_mode( DC *dc, int mode ) DECLSPEC_HIDDEN;
 384 extern void combine_transform( XFORM *result, const XFORM *xform1,
 385                                const XFORM *xform2 ) DECLSPEC_HIDDEN;
 386 extern int muldiv( int a, int b, int c ) DECLSPEC_HIDDEN;
 387
 388 /* driver.c */
 389 extern BOOL is_display_device( LPCWSTR name ) DECLSPEC_HIDDEN;
 390
 391 /* path.c */
 392
 393 extern void free_gdi_path( struct gdi_path *path ) DECLSPEC_HIDDEN;
 394 extern struct gdi_path *get_gdi_flat_path( DC *dc, HRGN *rgn ) DECLSPEC_HIDDEN;
 395 extern int get_gdi_path_data( struct gdi_path *path, POINT **points, BYTE **flags ) DECLSPEC_HIDDEN;
 396 extern BOOL PATH_SavePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
 397 extern BOOL PATH_RestorePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
 398
 399 /* painting.c */
 400 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut ) DECLSPEC_HIDDEN;
 401
 402 /* palette.c */
 403 extern HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg) DECLSPEC_HIDDEN;
 404 extern HPALETTE PALETTE_Init(void) DECLSPEC_HIDDEN;
 405 extern UINT get_palette_entries( HPALETTE hpalette, UINT start, UINT count,
 406                                  PALETTEENTRY *entries ) DECLSPEC_HIDDEN;
 407
 408 /* pen.c */
 409 extern HPEN create_pen( INT style, INT width, COLORREF color ) DECLSPEC_HIDDEN;
 410
 411 /* region.c */
 412 extern BOOL add_rect_to_region( HRGN rgn, const RECT *rect ) DECLSPEC_HIDDEN;
 413 extern INT mirror_region( HRGN dst, HRGN src, INT width ) DECLSPEC_HIDDEN;
 414 extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN;
 415 extern HRGN create_polypolygon_region( const POINT *pts, const INT *count, INT nbpolygons,
 416                                        INT mode, const RECT *clip_rect ) DECLSPEC_HIDDEN;
 417
 418 #define RGN_DEFAULT_RECTS 4
 419 typedef struct
 420 {
 421     struct gdi_obj_header obj;
 422     INT size;
 423     INT numRects;
 424     RECT *rects;
 425     RECT extents;
 426     RECT rects_buf[RGN_DEFAULT_RECTS];
 427 } WINEREGION;
 428
 429 /* return the region data without making a copy */
 430 static inline const WINEREGION *get_wine_region(HRGN rgn)
 431 {
 432     return GDI_GetObjPtr( rgn, NTGDI_OBJ_REGION );
 433 }
 434 static inline void release_wine_region(HRGN rgn)
 435 {
 436     GDI_ReleaseObj(rgn);
 437 }
 438
 439 /**********************************************************
 440  *     region_find_pt
 441  *
 442  * Return either the index of the rectangle that contains (x,y) or the first
 443  * rectangle after it.  Sets *hit to TRUE if the region contains (x,y).
 444  * Note if (x,y) follows all rectangles, then the return value will be rgn->numRects.
 445  */
 446 static inline int region_find_pt( const WINEREGION *rgn, int x, int y, BOOL *hit )
 447 {
 448     int i, start = 0, end = rgn->numRects - 1;
 449     BOOL h = FALSE;
 450
 451     while (start <= end)
 452     {
 453         i = (start + end) / 2;
 454
 455         if (rgn->rects[i].bottom <= y ||
 456             (rgn->rects[i].top <= y && rgn->rects[i].right <= x))
 457             start = i + 1;
 458         else if (rgn->rects[i].top > y ||
 459                  (rgn->rects[i].bottom > y && rgn->rects[i].left > x))
 460             end = i - 1;
 461         else
 462         {
 463             h = TRUE;
 464             break;
 465         }
 466     }
 467
 468     if (hit) *hit = h;
 469     return h ? i : start;
 470 }
 471
 472 /* null driver entry points */
 473 extern BOOL CDECL nulldrv_AbortPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 474 extern BOOL CDECL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
 475                                       PHYSDEV src_dev, struct bitblt_coords *src, BLENDFUNCTION func) DECLSPEC_HIDDEN;
 476 extern BOOL CDECL nulldrv_AngleArc( PHYSDEV dev, INT x, INT y, DWORD radius, FLOAT start, FLOAT sweep ) DECLSPEC_HIDDEN;
 477 extern BOOL CDECL nulldrv_ArcTo( PHYSDEV dev, INT left, INT top, INT right, INT bottom, INT xstart, INT ystart, INT xend, INT yend ) DECLSPEC_HIDDEN;
 478 extern BOOL CDECL nulldrv_BeginPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 479 extern DWORD CDECL nulldrv_BlendImage( PHYSDEV dev, BITMAPINFO *info, const struct gdi_image_bits *bits,
 480                                        struct bitblt_coords *src, struct bitblt_coords *dst, BLENDFUNCTION func ) DECLSPEC_HIDDEN;
 481 extern BOOL CDECL nulldrv_CloseFigure( PHYSDEV dev ) DECLSPEC_HIDDEN;
 482 extern BOOL CDECL nulldrv_EndPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 483 extern BOOL CDECL nulldrv_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags, const RECT *rect,
 484                                       LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
 485 extern BOOL CDECL nulldrv_FillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 486 extern BOOL CDECL nulldrv_FillRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush ) DECLSPEC_HIDDEN;
 487 extern BOOL CDECL nulldrv_FrameRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush, INT width, INT height ) DECLSPEC_HIDDEN;
 488 extern LONG CDECL nulldrv_GetBitmapBits( HBITMAP bitmap, void *bits, LONG size ) DECLSPEC_HIDDEN;
 489 extern COLORREF CDECL nulldrv_GetNearestColor( PHYSDEV dev, COLORREF color ) DECLSPEC_HIDDEN;
 490 extern COLORREF CDECL nulldrv_GetPixel( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 491 extern UINT CDECL nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries ) DECLSPEC_HIDDEN;
 492 extern BOOL CDECL nulldrv_GradientFill( PHYSDEV dev, TRIVERTEX *vert_array, ULONG nvert,
 493                                         void * grad_array, ULONG ngrad, ULONG mode ) DECLSPEC_HIDDEN;
 494 extern BOOL CDECL nulldrv_InvertRgn( PHYSDEV dev, HRGN rgn ) DECLSPEC_HIDDEN;
 495 extern BOOL CDECL nulldrv_PolyBezier( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 496 extern BOOL CDECL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 497 extern BOOL CDECL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count ) DECLSPEC_HIDDEN;
 498 extern BOOL CDECL nulldrv_PolylineTo( PHYSDEV dev, const POINT *points, INT count ) DECLSPEC_HIDDEN;
 499 extern INT CDECL nulldrv_SetDIBitsToDevice( PHYSDEV dev, INT x_dst, INT y_dst, DWORD width, DWORD height,
 500                                             INT x_src, INT y_src, UINT start, UINT lines,
 501                                             const void *bits, BITMAPINFO *info, UINT coloruse ) DECLSPEC_HIDDEN;
 502 extern BOOL CDECL nulldrv_StretchBlt( PHYSDEV dst_dev, struct bitblt_coords *dst,
 503                                       PHYSDEV src_dev, struct bitblt_coords *src, DWORD rop ) DECLSPEC_HIDDEN;
 504 extern INT  CDECL nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
 505                                          INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
 506                                          BITMAPINFO *info, UINT coloruse, DWORD rop ) DECLSPEC_HIDDEN;
 507 extern BOOL CDECL nulldrv_StrokeAndFillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 508 extern BOOL CDECL nulldrv_StrokePath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 509
 510 static inline DC *get_nulldrv_dc( PHYSDEV dev )
 511 {
 512     return CONTAINING_RECORD( dev, DC, nulldrv );
 513 }
 514
 515 static inline DC *get_physdev_dc( PHYSDEV dev )
 516 {
 517     while (dev->funcs != &null_driver)
 518         dev = dev->next;
 519     return get_nulldrv_dc( dev );
 520 }
 521
 522 BOOL WINAPI FontIsLinked(HDC);
 523
 524 BOOL WINAPI SetVirtualResolution(HDC hdc, DWORD horz_res, DWORD vert_res, DWORD horz_size, DWORD vert_size);
 525
 526 static inline BOOL is_rect_empty( const RECT *rect )
 527 {
 528     return (rect->left >= rect->right || rect->top >= rect->bottom);
 529 }
 530
 531 static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
 532 {
 533     dst->left   = max( src1->left, src2->left );
 534     dst->top    = max( src1->top, src2->top );
 535     dst->right  = min( src1->right, src2->right );
 536     dst->bottom = min( src1->bottom, src2->bottom );
 537     return !is_rect_empty( dst );
 538 }
 539
 540 static inline void offset_rect( RECT *rect, int offset_x, int offset_y )
 541 {
 542     rect->left   += offset_x;
 543     rect->top    += offset_y;
 544     rect->right  += offset_x;
 545     rect->bottom += offset_y;
 546 }
 547
 548 static inline void set_rect( RECT *rect, int left, int top, int right, int bottom )
 549 {
 550     rect->left = left;
 551     rect->top = top;
 552     rect->right = right;
 553     rect->bottom = bottom;
 554 }
 555
 556 static inline void order_rect( RECT *rect )
 557 {
 558     if (rect->left > rect->right)
 559     {
 560         int tmp = rect->left;
 561         rect->left = rect->right;
 562         rect->right = tmp;
 563     }
 564     if (rect->top > rect->bottom)
 565     {
 566         int tmp = rect->top;
 567         rect->top = rect->bottom;
 568         rect->bottom = tmp;
 569     }
 570 }
 571
 572 static inline void get_bounding_rect( RECT *rect, int x, int y, int width, int height )
 573 {
 574     rect->left   = x;
 575     rect->right  = x + width;
 576     rect->top    = y;
 577     rect->bottom = y + height;
 578     if (rect->left > rect->right)
 579     {
 580         int tmp = rect->left;
 581         rect->left = rect->right + 1;
 582         rect->right = tmp + 1;
 583     }
 584     if (rect->top > rect->bottom)
 585     {
 586         int tmp = rect->top;
 587         rect->top = rect->bottom + 1;
 588         rect->bottom = tmp + 1;
 589     }
 590 }
 591
 592 static inline void reset_bounds( RECT *bounds )
 593 {
 594     bounds->left = bounds->top = INT_MAX;
 595     bounds->right = bounds->bottom = INT_MIN;
 596 }
 597
 598 static inline void add_bounds_rect( RECT *bounds, const RECT *rect )
 599 {
 600     if (is_rect_empty( rect )) return;
 601     bounds->left   = min( bounds->left, rect->left );
 602     bounds->top    = min( bounds->top, rect->top );
 603     bounds->right  = max( bounds->right, rect->right );
 604     bounds->bottom = max( bounds->bottom, rect->bottom );
 605 }
 606
 607 static inline int get_bitmap_stride( int width, int bpp )
 608 {
 609     return ((width * bpp + 15) >> 3) & ~1;
 610 }
 611
 612 static inline int get_dib_stride( int width, int bpp )
 613 {
 614     return ((width * bpp + 31) >> 3) & ~3;
 615 }
 616
 617 static inline int get_dib_image_size( const BITMAPINFO *info )
 618 {
 619     return get_dib_stride( info->bmiHeader.biWidth, info->bmiHeader.biBitCount )
 620         * abs( info->bmiHeader.biHeight );
 621 }
 622
 623 /* only for use on sanitized BITMAPINFO structures */
 624 static inline int get_dib_info_size( const BITMAPINFO *info, UINT coloruse )
 625 {
 626     if (info->bmiHeader.biCompression == BI_BITFIELDS)
 627         return sizeof(BITMAPINFOHEADER) + 3 * sizeof(DWORD);
 628     if (coloruse == DIB_PAL_COLORS)
 629         return sizeof(BITMAPINFOHEADER) + info->bmiHeader.biClrUsed * sizeof(WORD);
 630     return FIELD_OFFSET( BITMAPINFO, bmiColors[info->bmiHeader.biClrUsed] );
 631 }
 632
 633 /* only for use on sanitized BITMAPINFO structures */
 634 static inline void copy_bitmapinfo( BITMAPINFO *dst, const BITMAPINFO *src )
 635 {
 636     memcpy( dst, src, get_dib_info_size( src, DIB_RGB_COLORS ));
 637 }
 638
 639 extern void CDECL free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 640
 641 void set_gdi_client_ptr( HGDIOBJ handle, void *ptr ) DECLSPEC_HIDDEN;
 642
 643 extern SYSTEM_BASIC_INFORMATION system_info DECLSPEC_HIDDEN;
 644 extern const struct user_callbacks *user_callbacks DECLSPEC_HIDDEN;
 645
 646 #endif /* __WINE_NTGDI_PRIVATE_H */