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     LONG         disabled;         /* get_dc_ptr() will return NULL.  Controlled by DCHF_(DISABLE|ENABLE)DC */
  69     INT          saveLevel;
  70     struct tagDC *saved_dc;
  71     DWORD_PTR    dwHookData;
  72     DCHOOKPROC   hookProc;         /* DC hook */
  73     BOOL         bounds_enabled:1; /* bounds tracking is enabled */
  74     BOOL         path_open:1;      /* path is currently open (only for saved DCs) */
  75
  76     POINT        wnd_org;          /* Window origin */
  77     SIZE         wnd_ext;          /* Window extent */
  78     POINT        vport_org;        /* Viewport origin */
  79     SIZE         vport_ext;        /* Viewport extent */
  80     SIZE         virtual_res;      /* Initially HORZRES,VERTRES. Changed by SetVirtualResolution */
  81     SIZE         virtual_size;     /* Initially HORZSIZE,VERTSIZE. Changed by SetVirtualResolution */
  82     RECT         vis_rect;         /* visible rectangle in screen coords */
  83     RECT         device_rect;      /* rectangle for the whole device */
  84     int          pixel_format;     /* pixel format (for memory DCs) */
  85     UINT         aa_flags;         /* anti-aliasing flags to pass to GetGlyphOutline for current font */
  86     FLOAT        miterLimit;
  87
  88     int           flags;
  89     DWORD         layout;
  90     HRGN          hClipRgn;      /* Clip region */
  91     HRGN          hMetaRgn;      /* Meta region */
  92     HRGN          hVisRgn;       /* Visible region */
  93     HRGN          region;        /* Total DC region (intersection of clip and visible) */
  94     HPEN          hPen;
  95     HBRUSH        hBrush;
  96     HFONT         hFont;
  97     HBITMAP       hBitmap;
  98     HPALETTE      hPalette;
  99
 100     struct gdi_path *path;
 101
 102     const struct font_gamma_ramp *font_gamma_ramp;
 103
 104     UINT          font_code_page;
 105     WORD          ROPmode;
 106     WORD          polyFillMode;
 107     WORD          stretchBltMode;
 108     WORD          relAbsMode;
 109     WORD          backgroundMode;
 110     COLORREF      backgroundColor;
 111     COLORREF      textColor;
 112     COLORREF      dcBrushColor;
 113     COLORREF      dcPenColor;
 114     POINT         brush_org;
 115
 116     DWORD         mapperFlags;       /* Font mapper flags */
 117     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 118     INT           charExtra;         /* Spacing from SetTextCharacterExtra() */
 119     INT           breakExtra;        /* breakTotalExtra / breakCount */
 120     INT           breakRem;          /* breakTotalExtra % breakCount */
 121     INT           MapMode;
 122     INT           GraphicsMode;      /* Graphics mode */
 123     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 124     POINT         cur_pos;           /* Current position */
 125     INT           ArcDirection;
 126     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 127     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 128     XFORM         xformVport2World;  /* Inverse of the above transformation */
 129     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 130     RECT          bounds;            /* Current bounding rect */
 131 } DC;
 132
 133 /* Certain functions will do no further processing if the driver returns this.
 134    Used by mfdrv for example. */
 135 #define GDI_NO_MORE_WORK 2
 136
 137 /* Rounds a floating point number to integer. The world-to-viewport
 138  * transformation process is done in floating point internally. This function
 139  * is then used to round these coordinates to integer values.
 140  */
 141 static inline INT GDI_ROUND(double val)
 142 {
 143    return (int)floor(val + 0.5);
 144 }
 145
 146 #define GET_DC_PHYSDEV(dc,func) \
 147     get_physdev_entry_point( (dc)->physDev, FIELD_OFFSET(struct gdi_dc_funcs,func))
 148
 149 static inline PHYSDEV pop_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
 150 {
 151     PHYSDEV dev, *pdev = &dc->physDev;
 152     while (*pdev && (*pdev)->funcs != funcs) pdev = &(*pdev)->next;
 153     if (!*pdev) return NULL;
 154     dev = *pdev;
 155     *pdev = dev->next;
 156     return dev;
 157 }
 158
 159 static inline PHYSDEV find_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
 160 {
 161     PHYSDEV dev;
 162
 163     for (dev = dc->physDev; dev; dev = dev->next) if (dev->funcs == funcs) return dev;
 164     return NULL;
 165 }
 166
 167 /* bitmap object */
 168
 169 typedef struct tagBITMAPOBJ
 170 {
 171     DIBSECTION          dib;
 172     SIZE                size;   /* For SetBitmapDimension() */
 173     RGBQUAD            *color_table;  /* DIB color table if <= 8bpp (always 1 << bpp in size) */
 174 } BITMAPOBJ;
 175
 176 static inline BOOL is_bitmapobj_dib( const BITMAPOBJ *bmp )
 177 {
 178     return bmp->dib.dsBmih.biSize != 0;
 179 }
 180
 181 /* bidi.c */
 182
 183 /* Wine_GCPW Flags */
 184 /* Directionality -
 185  * LOOSE means taking the directionality of the first strong character, if there is found one.
 186  * FORCE means the paragraph direction is forced. (RLE/LRE)
 187  */
 188 #define WINE_GCPW_FORCE_LTR 0
 189 #define WINE_GCPW_FORCE_RTL 1
 190 #define WINE_GCPW_LOOSE_LTR 2
 191 #define WINE_GCPW_LOOSE_RTL 3
 192 #define WINE_GCPW_DIR_MASK 3
 193 #define WINE_GCPW_LOOSE_MASK 2
 194
 195 extern BOOL BIDI_Reorder( HDC hDC, LPCWSTR lpString, INT uCount, DWORD dwFlags, DWORD dwWineGCP_Flags,
 196                           LPWSTR lpOutString, INT uCountOut, UINT *lpOrder, WORD **lpGlyphs, INT* cGlyphs ) DECLSPEC_HIDDEN;
 197
 198 /* bitblt.c */
 199 extern DWORD convert_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
 200                            BITMAPINFO *dst_info, struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 201 extern BOOL intersect_vis_rectangles( struct bitblt_coords *dst, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 202 extern DWORD stretch_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
 203                            BITMAPINFO *dst_info, struct bitblt_coords *dst,
 204                            struct gdi_image_bits *bits, int mode ) DECLSPEC_HIDDEN;
 205 extern void get_mono_dc_colors( DC *dc, int color_table_size, BITMAPINFO *info, int count ) DECLSPEC_HIDDEN;
 206
 207 /* brush.c */
 208 extern BOOL store_brush_pattern( LOGBRUSH *brush, struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
 209 extern void free_brush_pattern( struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
 210 extern BOOL get_brush_bitmap_info( HBRUSH handle, BITMAPINFO *info, void **bits, UINT *usage ) DECLSPEC_HIDDEN;
 211
 212 /* clipping.c */
 213 extern BOOL clip_device_rect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
 214 extern BOOL clip_visrect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
 215 extern void update_dc_clipping( DC * dc ) DECLSPEC_HIDDEN;
 216
 217 /* Return the total DC region (if any) */
 218 static inline HRGN get_dc_region( DC *dc )
 219 {
 220     if (dc->region) return dc->region;
 221     if (dc->hVisRgn) return dc->hVisRgn;
 222     if (dc->hClipRgn) return dc->hClipRgn;
 223     return dc->hMetaRgn;
 224 }
 225
 226 /* dc.c */
 227 extern DC *alloc_dc_ptr( WORD magic ) DECLSPEC_HIDDEN;
 228 extern void free_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 229 extern DC *get_dc_ptr( HDC hdc ) DECLSPEC_HIDDEN;
 230 extern void release_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
 231 extern void update_dc( DC *dc ) DECLSPEC_HIDDEN;
 232 extern void DC_InitDC( DC * dc ) DECLSPEC_HIDDEN;
 233 extern void DC_UpdateXforms( DC * dc ) DECLSPEC_HIDDEN;
 234
 235 /* dib.c */
 236 extern int bitmap_info_size( const BITMAPINFO * info, WORD coloruse ) DECLSPEC_HIDDEN;
 237 extern BOOL fill_color_table_from_pal_colors( BITMAPINFO *info, HDC hdc ) DECLSPEC_HIDDEN;
 238 extern const RGBQUAD *get_default_color_table( int bpp ) DECLSPEC_HIDDEN;
 239 extern void fill_default_color_table( BITMAPINFO *info ) DECLSPEC_HIDDEN;
 240 extern void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) DECLSPEC_HIDDEN;
 241 extern BITMAPINFO *copy_packed_dib( const BITMAPINFO *src_info, UINT usage ) DECLSPEC_HIDDEN;
 242 extern DWORD convert_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 243                                  const BITMAPINFO *dst_info, void *dst_bits ) DECLSPEC_HIDDEN;
 244
 245 extern DWORD stretch_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                                  INT mode ) DECLSPEC_HIDDEN;
 248 extern DWORD blend_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
 249                                const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
 250                                BLENDFUNCTION blend ) DECLSPEC_HIDDEN;
 251 extern DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_array, ULONG nvert,
 252                                   void *grad_array, ULONG ngrad, ULONG mode, const POINT *dev_pts, HRGN rgn ) DECLSPEC_HIDDEN;
 253 extern COLORREF get_pixel_bitmapinfo( const BITMAPINFO *info, void *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 254 extern BOOL render_aa_text_bitmapinfo( DC *dc, BITMAPINFO *info, struct gdi_image_bits *bits,
 255                                        struct bitblt_coords *src, INT x, INT y, UINT flags,
 256                                        UINT aa_flags, LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
 257 extern DWORD get_image_from_bitmap( BITMAPOBJ *bmp, BITMAPINFO *info,
 258                                     struct gdi_image_bits *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
 259 extern DWORD put_image_into_bitmap( BITMAPOBJ *bmp, HRGN clip, BITMAPINFO *info,
 260                                     const struct gdi_image_bits *bits, struct bitblt_coords *src,
 261                                     struct bitblt_coords *dst ) DECLSPEC_HIDDEN;
 262 extern void dibdrv_set_window_surface( DC *dc, struct window_surface *surface ) DECLSPEC_HIDDEN;
 263
 264 /* driver.c */
 265 extern const struct gdi_dc_funcs null_driver DECLSPEC_HIDDEN;
 266 extern const struct gdi_dc_funcs dib_driver DECLSPEC_HIDDEN;
 267 extern const struct gdi_dc_funcs path_driver DECLSPEC_HIDDEN;
 268 extern const struct gdi_dc_funcs font_driver DECLSPEC_HIDDEN;
 269 extern const struct gdi_dc_funcs *DRIVER_load_driver( LPCWSTR name ) DECLSPEC_HIDDEN;
 270 extern BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size ) DECLSPEC_HIDDEN;
 271
 272 /* enhmetafile.c */
 273 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, DWORD filesize, BOOL on_disk ) DECLSPEC_HIDDEN;
 274
 275 /* font.c */
 276
 277 struct font_gamma_ramp
 278 {
 279     DWORD gamma;
 280     BYTE  encode[256];
 281     BYTE  decode[256];
 282 };
 283
 284 /* Undocumented structure filled in by GetFontRealizationInfo */
 285 struct font_realization_info
 286 {
 287     DWORD size;        /* could be 16 or 24 */
 288     DWORD flags;       /* 1 for bitmap fonts, 3 for scalable fonts */
 289     DWORD cache_num;   /* keeps incrementing - num of fonts that have been created allowing for caching?? */
 290     DWORD instance_id; /* identifies a realized font instance */
 291     DWORD unk;         /* unknown */
 292     WORD  face_index;  /* face index in case of font collections */
 293     WORD  simulations; /* 0 bit - bold simulation, 1 bit - oblique simulation */
 294 };
 295
 296 /* Undocumented structure filled in by GetCharWidthInfo */
 297 struct char_width_info
 298 {
 299     INT lsb;   /* minimum left side bearing */
 300     INT rsb;   /* minimum right side bearing */
 301     INT unk;   /* unknown */
 302 };
 303
 304 typedef struct { FLOAT eM11, eM12, eM21, eM22; } FMAT2;
 305
 306 struct glyph_metrics;
 307
 308 struct gdi_font
 309 {
 310     struct list            entry;
 311     struct list            unused_entry;
 312     DWORD                  refcount;
 313     DWORD                  gm_size;
 314     struct glyph_metrics **gm;
 315     /* the following members can be accessed without locking, they are never modified after creation */
 316     void                  *private;  /* font backend private data */
 317     DWORD                  handle;
 318     DWORD                  cache_num;
 319     DWORD                  hash;
 320     UINT                   charset;
 321     UINT                   codepage;
 322     FONTSIGNATURE          fs;
 323     LOGFONTW               lf;
 324     FMAT2                  matrix;
 325     UINT                   face_index;
 326     double                 scale_y;
 327     INT                    aveWidth;
 328     INT                    ppem;
 329     SHORT                  yMax;
 330     SHORT                  yMin;
 331     UINT                   ntmFlags;
 332     UINT                   ntmCellHeight;
 333     UINT                   ntmAvgWidth;
 334     UINT                   aa_flags;
 335     ULONG                  ttc_item_offset;    /* 0 if font is not a part of TrueType collection */
 336     BOOL                   can_use_bitmap : 1;
 337     BOOL                   fake_italic : 1;
 338     BOOL                   fake_bold : 1;
 339     BOOL                   scalable : 1;
 340     WCHAR                 *name;
 341     struct font_fileinfo  *fileinfo;
 342 };
 343
 344 #define MS_MAKE_TAG(ch1,ch2,ch3,ch4) \
 345     (((DWORD)ch4 << 24) | ((DWORD)ch3 << 16) | ((DWORD)ch2 << 8) | (DWORD)ch1)
 346
 347 #define MS_GASP_TAG MS_MAKE_TAG('g', 'a', 's', 'p')
 348 #define MS_GSUB_TAG MS_MAKE_TAG('G', 'S', 'U', 'B')
 349 #define MS_KERN_TAG MS_MAKE_TAG('k', 'e', 'r', 'n')
 350 #define MS_TTCF_TAG MS_MAKE_TAG('t', 't', 'c', 'f')
 351 #define MS_VDMX_TAG MS_MAKE_TAG('V', 'D', 'M', 'X')
 352
 353 struct font_backend_funcs
 354 {
 355     BOOL  (CDECL *pEnumFonts)( LOGFONTW *lf, FONTENUMPROCW proc, LPARAM lparam );
 356     BOOL  (CDECL *pFontIsLinked)( struct gdi_font *font );
 357     BOOL  (CDECL *pGetCharWidthInfo)( struct gdi_font *font, struct char_width_info *info );
 358     DWORD (CDECL *pGetFontUnicodeRanges)( struct gdi_font *font, GLYPHSET *glyphset );
 359     DWORD (CDECL *pGetKerningPairs)( struct gdi_font *font, DWORD count, KERNINGPAIR *pairs );
 360     UINT  (CDECL *pGetOutlineTextMetrics)( struct gdi_font *font, UINT size, OUTLINETEXTMETRICW *metrics );
 361     BOOL  (CDECL *pGetTextMetrics)( struct gdi_font *font, TEXTMETRICW *metrics );
 362     struct gdi_font * (CDECL *pSelectFont)( DC *dc, HFONT hfont, UINT *aa_flags, UINT default_aa_flags );
 363
 364     INT   (CDECL *pAddFontResourceEx)( LPCWSTR file, DWORD flags, PVOID pdv );
 365     INT   (CDECL *pRemoveFontResourceEx)( LPCWSTR file, DWORD flags, PVOID pdv );
 366     HANDLE (CDECL *pAddFontMemResourceEx)( void *font, DWORD size, PVOID pdv, DWORD *count );
 367     BOOL  (CDECL *pCreateScalableFontResource)( DWORD hidden, LPCWSTR resource,
 368                                                 LPCWSTR font_file, LPCWSTR font_path );
 369
 370     BOOL  (CDECL *alloc_font)( struct gdi_font *font );
 371     DWORD (CDECL *get_font_data)( struct gdi_font *gdi_font, DWORD table, DWORD offset,
 372                                   void *buf, DWORD count );
 373     BOOL  (CDECL *get_glyph_index)( struct gdi_font *gdi_font, UINT *glyph );
 374     UINT  (CDECL *get_default_glyph)( struct gdi_font *gdi_font );
 375     DWORD (CDECL *get_glyph_outline)( struct gdi_font *font, UINT glyph, UINT format,
 376                                       GLYPHMETRICS *gm, ABC *abc, DWORD buflen, void *buf, const MAT2 *mat );
 377     void  (CDECL *destroy_font)( struct gdi_font *font );
 378 };
 379
 380 extern struct gdi_font *alloc_gdi_font(void) DECLSPEC_HIDDEN;
 381 extern void free_gdi_font( struct gdi_font *font ) DECLSPEC_HIDDEN;
 382 extern void cache_gdi_font( struct gdi_font *font ) DECLSPEC_HIDDEN;
 383 extern struct gdi_font *find_cached_gdi_font( const LOGFONTW *lf, const FMAT2 *matrix,
 384                                               BOOL can_use_bitmap ) DECLSPEC_HIDDEN;
 385 extern void set_gdi_font_name( struct gdi_font *font, const WCHAR *name ) DECLSPEC_HIDDEN;
 386 extern void set_gdi_font_file_info( struct gdi_font *font, const WCHAR *file, SIZE_T data_size ) DECLSPEC_HIDDEN;
 387 extern BOOL get_gdi_font_glyph_metrics( struct gdi_font *font, UINT index,
 388                                         GLYPHMETRICS *gm, ABC *abc ) DECLSPEC_HIDDEN;
 389 extern void set_gdi_font_glyph_metrics( struct gdi_font *font, UINT index,
 390                                         const GLYPHMETRICS *gm, const ABC *abc ) DECLSPEC_HIDDEN;
 391 extern void font_init(void) DECLSPEC_HIDDEN;
 392 extern CRITICAL_SECTION font_cs DECLSPEC_HIDDEN;
 393
 394 /* freetype.c */
 395
 396 extern BOOL WineEngInit( const struct font_backend_funcs **funcs ) DECLSPEC_HIDDEN;
 397
 398 /* gdiobj.c */
 399 extern HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
 400 extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 401 extern HGDIOBJ get_full_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 402 extern void *GDI_GetObjPtr( HGDIOBJ, WORD ) DECLSPEC_HIDDEN;
 403 extern void *get_any_obj_ptr( HGDIOBJ, WORD * ) DECLSPEC_HIDDEN;
 404 extern void GDI_ReleaseObj( HGDIOBJ ) DECLSPEC_HIDDEN;
 405 extern void GDI_CheckNotLock(void) DECLSPEC_HIDDEN;
 406 extern UINT GDI_get_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 407 extern HGDIOBJ GDI_inc_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 408 extern BOOL GDI_dec_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
 409 extern void GDI_hdc_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
 410 extern void GDI_hdc_not_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
 411 extern DWORD get_dpi(void) DECLSPEC_HIDDEN;
 412 extern DWORD get_system_dpi(void) DECLSPEC_HIDDEN;
 413
 414 /* mapping.c */
 415 extern BOOL dp_to_lp( DC *dc, POINT *points, INT count ) DECLSPEC_HIDDEN;
 416 extern void lp_to_dp( DC *dc, POINT *points, INT count ) DECLSPEC_HIDDEN;
 417
 418 /* metafile.c */
 419 extern HMETAFILE MF_Create_HMETAFILE(METAHEADER *mh) DECLSPEC_HIDDEN;
 420 extern METAHEADER *MF_CreateMetaHeaderDisk(METAHEADER *mr, LPCVOID filename, BOOL unicode ) DECLSPEC_HIDDEN;
 421
 422 /* Format of comment record added by GetWinMetaFileBits */
 423 #include <pshpack2.h>
 424 typedef struct
 425 {
 426     DWORD magic;   /* WMFC */
 427     WORD unk04;    /* 1 */
 428     WORD unk06;    /* 0 */
 429     WORD unk08;    /* 0 */
 430     WORD unk0a;    /* 1 */
 431     WORD checksum;
 432     DWORD unk0e;   /* 0 */
 433     DWORD num_chunks;
 434     DWORD chunk_size;
 435     DWORD remaining_size;
 436     DWORD emf_size;
 437     BYTE emf_data[1];
 438 } emf_in_wmf_comment;
 439 #include <poppack.h>
 440
 441 #define WMFC_MAGIC 0x43464d57
 442
 443 /* path.c */
 444
 445 extern void free_gdi_path( struct gdi_path *path ) DECLSPEC_HIDDEN;
 446 extern struct gdi_path *get_gdi_flat_path( DC *dc, HRGN *rgn ) DECLSPEC_HIDDEN;
 447 extern int get_gdi_path_data( struct gdi_path *path, POINT **points, BYTE **flags ) DECLSPEC_HIDDEN;
 448 extern BOOL PATH_SavePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
 449 extern BOOL PATH_RestorePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
 450
 451 /* painting.c */
 452 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut ) DECLSPEC_HIDDEN;
 453
 454 /* palette.c */
 455 extern HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg) DECLSPEC_HIDDEN;
 456 extern UINT WINAPI GDIRealizePalette( HDC hdc ) DECLSPEC_HIDDEN;
 457 extern HPALETTE PALETTE_Init(void) DECLSPEC_HIDDEN;
 458
 459 /* region.c */
 460 extern BOOL add_rect_to_region( HRGN rgn, const RECT *rect ) DECLSPEC_HIDDEN;
 461 extern INT mirror_region( HRGN dst, HRGN src, INT width ) DECLSPEC_HIDDEN;
 462 extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN;
 463 extern HRGN create_polypolygon_region( const POINT *pts, const INT *count, INT nbpolygons,
 464                                        INT mode, const RECT *clip_rect ) DECLSPEC_HIDDEN;
 465
 466 #define RGN_DEFAULT_RECTS 4
 467 typedef struct
 468 {
 469     INT size;
 470     INT numRects;
 471     RECT *rects;
 472     RECT extents;
 473     RECT rects_buf[RGN_DEFAULT_RECTS];
 474 } WINEREGION;
 475
 476 /* return the region data without making a copy */
 477 static inline const WINEREGION *get_wine_region(HRGN rgn)
 478 {
 479     return GDI_GetObjPtr( rgn, OBJ_REGION );
 480 }
 481 static inline void release_wine_region(HRGN rgn)
 482 {
 483     GDI_ReleaseObj(rgn);
 484 }
 485
 486 /**********************************************************
 487  *     region_find_pt
 488  *
 489  * Return either the index of the rectangle that contains (x,y) or the first
 490  * rectangle after it.  Sets *hit to TRUE if the region contains (x,y).
 491  * Note if (x,y) follows all rectangles, then the return value will be rgn->numRects.
 492  */
 493 static inline int region_find_pt( const WINEREGION *rgn, int x, int y, BOOL *hit )
 494 {
 495     int i, start = 0, end = rgn->numRects - 1;
 496     BOOL h = FALSE;
 497
 498     while (start <= end)
 499     {
 500         i = (start + end) / 2;
 501
 502         if (rgn->rects[i].bottom <= y ||
 503             (rgn->rects[i].top <= y && rgn->rects[i].right <= x))
 504             start = i + 1;
 505         else if (rgn->rects[i].top > y ||
 506                  (rgn->rects[i].bottom > y && rgn->rects[i].left > x))
 507             end = i - 1;
 508         else
 509         {
 510             h = TRUE;
 511             break;
 512         }
 513     }
 514
 515     if (hit) *hit = h;
 516     return h ? i : start;
 517 }
 518
 519 /* null driver entry points */
 520 extern BOOL CDECL nulldrv_AbortPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 521 extern BOOL CDECL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
 522                                       PHYSDEV src_dev, struct bitblt_coords *src, BLENDFUNCTION func) DECLSPEC_HIDDEN;
 523 extern BOOL CDECL nulldrv_AngleArc( PHYSDEV dev, INT x, INT y, DWORD radius, FLOAT start, FLOAT sweep ) DECLSPEC_HIDDEN;
 524 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;
 525 extern BOOL CDECL nulldrv_BeginPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 526 extern DWORD CDECL nulldrv_BlendImage( PHYSDEV dev, BITMAPINFO *info, const struct gdi_image_bits *bits,
 527                                        struct bitblt_coords *src, struct bitblt_coords *dst, BLENDFUNCTION func ) DECLSPEC_HIDDEN;
 528 extern BOOL CDECL nulldrv_CloseFigure( PHYSDEV dev ) DECLSPEC_HIDDEN;
 529 extern BOOL CDECL nulldrv_EndPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 530 extern INT  CDECL nulldrv_ExcludeClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 531 extern INT  CDECL nulldrv_ExtSelectClipRgn( PHYSDEV dev, HRGN rgn, INT mode ) DECLSPEC_HIDDEN;
 532 extern BOOL CDECL nulldrv_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags, const RECT *rect,
 533                                       LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
 534 extern BOOL CDECL nulldrv_FillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 535 extern BOOL CDECL nulldrv_FillRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush ) DECLSPEC_HIDDEN;
 536 extern BOOL CDECL nulldrv_FlattenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 537 extern BOOL CDECL nulldrv_FrameRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush, INT width, INT height ) DECLSPEC_HIDDEN;
 538 extern LONG CDECL nulldrv_GetBitmapBits( HBITMAP bitmap, void *bits, LONG size ) DECLSPEC_HIDDEN;
 539 extern COLORREF CDECL nulldrv_GetNearestColor( PHYSDEV dev, COLORREF color ) DECLSPEC_HIDDEN;
 540 extern COLORREF CDECL nulldrv_GetPixel( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 541 extern UINT CDECL nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries ) DECLSPEC_HIDDEN;
 542 extern BOOL CDECL nulldrv_GradientFill( PHYSDEV dev, TRIVERTEX *vert_array, ULONG nvert,
 543                                         void * grad_array, ULONG ngrad, ULONG mode ) DECLSPEC_HIDDEN;
 544 extern INT  CDECL nulldrv_IntersectClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 545 extern BOOL CDECL nulldrv_InvertRgn( PHYSDEV dev, HRGN rgn ) DECLSPEC_HIDDEN;
 546 extern BOOL CDECL nulldrv_ModifyWorldTransform( PHYSDEV dev, const XFORM *xform, DWORD mode ) DECLSPEC_HIDDEN;
 547 extern INT  CDECL nulldrv_OffsetClipRgn( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 548 extern BOOL CDECL nulldrv_OffsetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 549 extern BOOL CDECL nulldrv_OffsetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 550 extern BOOL CDECL nulldrv_PolyBezier( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 551 extern BOOL CDECL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 552 extern BOOL CDECL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count ) DECLSPEC_HIDDEN;
 553 extern BOOL CDECL nulldrv_PolylineTo( PHYSDEV dev, const POINT *points, INT count ) DECLSPEC_HIDDEN;
 554 extern BOOL CDECL nulldrv_RestoreDC( PHYSDEV dev, INT level ) DECLSPEC_HIDDEN;
 555 extern INT  CDECL nulldrv_SaveDC( PHYSDEV dev ) DECLSPEC_HIDDEN;
 556 extern BOOL CDECL nulldrv_ScaleViewportExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
 557 extern BOOL CDECL nulldrv_ScaleWindowExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
 558 extern BOOL CDECL nulldrv_SelectClipPath( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
 559 extern HFONT CDECL nulldrv_SelectFont( PHYSDEV dev, HFONT font, UINT *ggo_flags ) DECLSPEC_HIDDEN;
 560 extern INT CDECL nulldrv_SetDIBitsToDevice( PHYSDEV dev, INT x_dst, INT y_dst, DWORD width, DWORD height,
 561                                             INT x_src, INT y_src, UINT start, UINT lines,
 562                                             const void *bits, BITMAPINFO *info, UINT coloruse ) DECLSPEC_HIDDEN;
 563 extern INT  CDECL nulldrv_SetMapMode( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
 564 extern BOOL CDECL nulldrv_SetViewportExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
 565 extern BOOL CDECL nulldrv_SetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 566 extern BOOL CDECL nulldrv_SetWindowExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
 567 extern BOOL CDECL nulldrv_SetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
 568 extern BOOL CDECL nulldrv_SetWorldTransform( PHYSDEV dev, const XFORM *xform ) DECLSPEC_HIDDEN;
 569 extern BOOL CDECL nulldrv_StretchBlt( PHYSDEV dst_dev, struct bitblt_coords *dst,
 570                                       PHYSDEV src_dev, struct bitblt_coords *src, DWORD rop ) DECLSPEC_HIDDEN;
 571 extern INT  CDECL nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
 572                                          INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
 573                                          BITMAPINFO *info, UINT coloruse, DWORD rop ) DECLSPEC_HIDDEN;
 574 extern BOOL CDECL nulldrv_StrokeAndFillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 575 extern BOOL CDECL nulldrv_StrokePath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 576 extern BOOL CDECL nulldrv_WidenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 577
 578 static inline DC *get_nulldrv_dc( PHYSDEV dev )
 579 {
 580     return CONTAINING_RECORD( dev, DC, nulldrv );
 581 }
 582
 583 static inline DC *get_physdev_dc( PHYSDEV dev )
 584 {
 585     while (dev->funcs != &null_driver)
 586         dev = dev->next;
 587     return get_nulldrv_dc( dev );
 588 }
 589
 590 /* Undocumented value for DIB's iUsage: Indicates a mono DIB w/o pal entries */
 591 #define DIB_PAL_MONO 2
 592
 593 BOOL WINAPI FontIsLinked(HDC);
 594
 595 BOOL WINAPI SetVirtualResolution(HDC hdc, DWORD horz_res, DWORD vert_res, DWORD horz_size, DWORD vert_size);
 596
 597 static inline BOOL is_rect_empty( const RECT *rect )
 598 {
 599     return (rect->left >= rect->right || rect->top >= rect->bottom);
 600 }
 601
 602 static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
 603 {
 604     dst->left   = max( src1->left, src2->left );
 605     dst->top    = max( src1->top, src2->top );
 606     dst->right  = min( src1->right, src2->right );
 607     dst->bottom = min( src1->bottom, src2->bottom );
 608     return !is_rect_empty( dst );
 609 }
 610
 611 static inline void offset_rect( RECT *rect, int offset_x, int offset_y )
 612 {
 613     rect->left   += offset_x;
 614     rect->top    += offset_y;
 615     rect->right  += offset_x;
 616     rect->bottom += offset_y;
 617 }
 618
 619 static inline void set_rect( RECT *rect, int left, int top, int right, int bottom )
 620 {
 621     rect->left = left;
 622     rect->top = top;
 623     rect->right = right;
 624     rect->bottom = bottom;
 625 }
 626
 627 static inline void order_rect( RECT *rect )
 628 {
 629     if (rect->left > rect->right)
 630     {
 631         int tmp = rect->left;
 632         rect->left = rect->right;
 633         rect->right = tmp;
 634     }
 635     if (rect->top > rect->bottom)
 636     {
 637         int tmp = rect->top;
 638         rect->top = rect->bottom;
 639         rect->bottom = tmp;
 640     }
 641 }
 642
 643 static inline void get_bounding_rect( RECT *rect, int x, int y, int width, int height )
 644 {
 645     rect->left   = x;
 646     rect->right  = x + width;
 647     rect->top    = y;
 648     rect->bottom = y + height;
 649     if (rect->left > rect->right)
 650     {
 651         int tmp = rect->left;
 652         rect->left = rect->right + 1;
 653         rect->right = tmp + 1;
 654     }
 655     if (rect->top > rect->bottom)
 656     {
 657         int tmp = rect->top;
 658         rect->top = rect->bottom + 1;
 659         rect->bottom = tmp + 1;
 660     }
 661 }
 662
 663 static inline void reset_bounds( RECT *bounds )
 664 {
 665     bounds->left = bounds->top = INT_MAX;
 666     bounds->right = bounds->bottom = INT_MIN;
 667 }
 668
 669 static inline void add_bounds_rect( RECT *bounds, const RECT *rect )
 670 {
 671     if (is_rect_empty( rect )) return;
 672     bounds->left   = min( bounds->left, rect->left );
 673     bounds->top    = min( bounds->top, rect->top );
 674     bounds->right  = max( bounds->right, rect->right );
 675     bounds->bottom = max( bounds->bottom, rect->bottom );
 676 }
 677
 678 static inline int get_bitmap_stride( int width, int bpp )
 679 {
 680     return ((width * bpp + 15) >> 3) & ~1;
 681 }
 682
 683 static inline int get_dib_stride( int width, int bpp )
 684 {
 685     return ((width * bpp + 31) >> 3) & ~3;
 686 }
 687
 688 static inline int get_dib_image_size( const BITMAPINFO *info )
 689 {
 690     return get_dib_stride( info->bmiHeader.biWidth, info->bmiHeader.biBitCount )
 691         * abs( info->bmiHeader.biHeight );
 692 }
 693
 694 /* only for use on sanitized BITMAPINFO structures */
 695 static inline int get_dib_info_size( const BITMAPINFO *info, UINT coloruse )
 696 {
 697     if (info->bmiHeader.biCompression == BI_BITFIELDS)
 698         return sizeof(BITMAPINFOHEADER) + 3 * sizeof(DWORD);
 699     if (coloruse == DIB_PAL_COLORS)
 700         return sizeof(BITMAPINFOHEADER) + info->bmiHeader.biClrUsed * sizeof(WORD);
 701     return FIELD_OFFSET( BITMAPINFO, bmiColors[info->bmiHeader.biClrUsed] );
 702 }
 703
 704 /* only for use on sanitized BITMAPINFO structures */
 705 static inline void copy_bitmapinfo( BITMAPINFO *dst, const BITMAPINFO *src )
 706 {
 707     memcpy( dst, src, get_dib_info_size( src, DIB_RGB_COLORS ));
 708 }
 709
 710 extern void CDECL free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
 711
 712 extern HMODULE gdi32_module DECLSPEC_HIDDEN;
 713
 714 #endif /* __WINE_GDI_PRIVATE_H */