dlls/dwrite/dwrite_private.h

   1 /*
   2  * Copyright 2012 Nikolay Sivov for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #ifndef __WINE_DWRITE_PRIVATE_H
  20 #define __WINE_DWRITE_PRIVATE_H
  21
  22 #include "dwrite_3.h"
  23 #include "d2d1.h"
  24 #include "winternl.h"
  25
  26 #include "wine/debug.h"
  27 #include "wine/list.h"
  28 #include "wine/rbtree.h"
  29
  30 #define MS_GSUB_TAG DWRITE_MAKE_OPENTYPE_TAG('G','S','U','B')
  31 #define MS_GPOS_TAG DWRITE_MAKE_OPENTYPE_TAG('G','P','O','S')
  32
  33 typedef struct MATRIX_2X2
  34 {
  35     float m11;
  36     float m12;
  37     float m21;
  38     float m22;
  39 } MATRIX_2X2;
  40
  41 static const DWRITE_MATRIX identity =
  42 {
  43     1.0f, 0.0f,
  44     0.0f, 1.0f,
  45     0.0f, 0.0f
  46 };
  47
  48 static const MATRIX_2X2 identity_2x2 =
  49 {
  50     1.0f, 0.0f,
  51     0.0f, 1.0f,
  52 };
  53
  54 static inline LPWSTR heap_strdupnW(const WCHAR *str, UINT32 len)
  55 {
  56     WCHAR *ret = NULL;
  57
  58     if (len)
  59     {
  60         ret = malloc((len+1)*sizeof(WCHAR));
  61         if(ret)
  62         {
  63             memcpy(ret, str, len*sizeof(WCHAR));
  64             ret[len] = 0;
  65         }
  66     }
  67
  68     return ret;
  69 }
  70
  71 static inline const char *debugstr_range(const DWRITE_TEXT_RANGE *range)
  72 {
  73     return wine_dbg_sprintf("%u:%u", range->startPosition, range->length);
  74 }
  75
  76 static inline const char *debugstr_matrix(const DWRITE_MATRIX *m)
  77 {
  78     if (!m) return "(null)";
  79     return wine_dbg_sprintf("{%.2f,%.2f,%.2f,%.2f,%.2f,%.2f}", m->m11, m->m12, m->m21, m->m22,
  80         m->dx, m->dy);
  81 }
  82
  83 static inline BOOL dwrite_array_reserve(void **elements, size_t *capacity, size_t count, size_t size)
  84 {
  85     size_t new_capacity, max_capacity;
  86     void *new_elements;
  87
  88     if (count <= *capacity)
  89         return TRUE;
  90
  91     max_capacity = ~(SIZE_T)0 / size;
  92     if (count > max_capacity)
  93         return FALSE;
  94
  95     new_capacity = max(4, *capacity);
  96     while (new_capacity < count && new_capacity <= max_capacity / 2)
  97         new_capacity *= 2;
  98     if (new_capacity < count)
  99         new_capacity = max_capacity;
 100
 101     new_elements = realloc(*elements, new_capacity * size);
 102     if (!new_elements)
 103         return FALSE;
 104
 105     *elements = new_elements;
 106     *capacity = new_capacity;
 107
 108     return TRUE;
 109 }
 110
 111 const char *debugstr_sa_script(UINT16);
 112
 113 static inline unsigned short get_table_entry_16(const unsigned short *table, WCHAR ch)
 114 {
 115     return table[table[table[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
 116 }
 117
 118 static inline unsigned short get_table_entry_32(const unsigned short *table, UINT ch)
 119 {
 120     return table[table[table[table[ch >> 12] + ((ch >> 8) & 0x0f)] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
 121 }
 122
 123 static inline BOOL is_simulation_valid(DWRITE_FONT_SIMULATIONS simulations)
 124 {
 125     return (simulations & ~(DWRITE_FONT_SIMULATIONS_NONE | DWRITE_FONT_SIMULATIONS_BOLD |
 126         DWRITE_FONT_SIMULATIONS_OBLIQUE)) == 0;
 127 }
 128
 129 struct textlayout_desc
 130 {
 131     IDWriteFactory7 *factory;
 132     const WCHAR *string;
 133     UINT32 length;
 134     IDWriteTextFormat *format;
 135     FLOAT max_width;
 136     FLOAT max_height;
 137     BOOL is_gdi_compatible;
 138     /* fields below are only meaningful for gdi-compatible layout */
 139     FLOAT ppdip;
 140     const DWRITE_MATRIX *transform;
 141     BOOL use_gdi_natural;
 142 };
 143
 144 struct glyphrunanalysis_desc
 145 {
 146     const DWRITE_GLYPH_RUN *run;
 147     const DWRITE_MATRIX *transform;
 148     DWRITE_RENDERING_MODE1 rendering_mode;
 149     DWRITE_MEASURING_MODE measuring_mode;
 150     DWRITE_GRID_FIT_MODE gridfit_mode;
 151     DWRITE_TEXT_ANTIALIAS_MODE aa_mode;
 152     D2D_POINT_2F origin;
 153 };
 154
 155 struct fontface_desc
 156 {
 157     IDWriteFactory7 *factory;
 158     DWRITE_FONT_FACE_TYPE face_type;
 159     IDWriteFontFile *file;
 160     IDWriteFontFileStream *stream;
 161     UINT32 index;
 162     DWRITE_FONT_SIMULATIONS simulations;
 163     struct dwrite_font_data *font_data; /* could be NULL when face is created directly with IDWriteFactory::CreateFontFace() */
 164 };
 165
 166 struct dwrite_fonttable
 167 {
 168     const BYTE *data;
 169     void *context;
 170     UINT32 size;
 171     BOOL exists;
 172 };
 173
 174 struct fontfacecached
 175 {
 176     struct list entry;
 177     IDWriteFontFace5 *fontface;
 178 };
 179
 180 #define GLYPH_BLOCK_SHIFT 8
 181 #define GLYPH_BLOCK_SIZE  (1UL << GLYPH_BLOCK_SHIFT)
 182 #define GLYPH_BLOCK_MASK  (GLYPH_BLOCK_SIZE - 1)
 183 #define GLYPH_MAX         65536
 184
 185 enum font_flags
 186 {
 187     FONT_IS_SYMBOL                = 0x00000001,
 188     FONT_IS_MONOSPACED            = 0x00000002,
 189     FONT_IS_COLORED               = 0x00000004, /* CPAL/COLR support */
 190     FONTFACE_KERNING_PAIRS        = 0x00000008,
 191     FONTFACE_NO_KERNING_PAIRS     = 0x00000010,
 192     FONTFACE_VERTICAL_VARIANTS    = 0x00000020,
 193     FONTFACE_NO_VERTICAL_VARIANTS = 0x00000040,
 194 };
 195
 196 struct dwrite_cmap;
 197
 198 typedef UINT16 (*p_cmap_get_glyph_func)(const struct dwrite_cmap *cmap, unsigned int ch);
 199 typedef unsigned int (*p_cmap_get_ranges_func)(const struct dwrite_cmap *cmap, unsigned int max_count,
 200     DWRITE_UNICODE_RANGE *ranges);
 201
 202 struct dwrite_cmap
 203 {
 204     const void *data;
 205     union
 206     {
 207         struct
 208         {
 209             unsigned int seg_count;
 210             unsigned int glyph_id_array_len;
 211
 212             const UINT16 *ends;
 213             const UINT16 *starts;
 214             const UINT16 *id_delta;
 215             const UINT16 *id_range_offset;
 216             const UINT16 *glyph_id_array;
 217         } format4;
 218         struct
 219         {
 220             unsigned int first;
 221             unsigned int last;
 222         } format6_10;
 223         struct
 224         {
 225             unsigned int group_count;
 226         } format12_13;
 227     } u;
 228     p_cmap_get_glyph_func get_glyph;
 229     p_cmap_get_ranges_func get_ranges;
 230     unsigned short symbol : 1;
 231     IDWriteFontFileStream *stream;
 232     void *table_context;
 233 };
 234
 235 extern void dwrite_cmap_init(struct dwrite_cmap *cmap, IDWriteFontFile *file, unsigned int face_index,
 236         DWRITE_FONT_FACE_TYPE face_type);
 237 extern void dwrite_cmap_release(struct dwrite_cmap *cmap);
 238 extern UINT16 opentype_cmap_get_glyph(const struct dwrite_cmap *cmap, unsigned int ch);
 239 extern HRESULT opentype_cmap_get_unicode_ranges(const struct dwrite_cmap *cmap, unsigned int max_count,
 240         DWRITE_UNICODE_RANGE *ranges, unsigned int *count);
 241
 242 struct dwrite_fontface;
 243 typedef UINT64 (*p_dwrite_fontface_get_font_object)(struct dwrite_fontface *fontface);
 244
 245 struct dwrite_fontface
 246 {
 247     IDWriteFontFace5 IDWriteFontFace5_iface;
 248     IDWriteFontFaceReference IDWriteFontFaceReference_iface;
 249     LONG refcount;
 250
 251     IDWriteFontFileStream *stream;
 252     IDWriteFontFile *file;
 253     UINT32 index;
 254
 255     IDWriteFactory7 *factory;
 256     struct fontfacecached *cached;
 257     UINT64 font_object;
 258     void *data_context;
 259     p_dwrite_fontface_get_font_object get_font_object;
 260     struct
 261     {
 262         struct wine_rb_tree tree;
 263         struct list mru;
 264         size_t max_size;
 265         size_t size;
 266     } cache;
 267     CRITICAL_SECTION cs;
 268
 269     USHORT simulations;
 270     DWRITE_FONT_FACE_TYPE type;
 271     DWRITE_FONT_METRICS1 metrics;
 272     DWRITE_CARET_METRICS caret;
 273     struct
 274     {
 275         unsigned int ascent;
 276         unsigned int descent;
 277     } typo_metrics;
 278     unsigned int flags;
 279
 280     struct dwrite_cmap cmap;
 281
 282     struct dwrite_fonttable vdmx;
 283     struct dwrite_fonttable gasp;
 284     struct dwrite_fonttable cpal;
 285     struct dwrite_fonttable colr;
 286     struct dwrite_fonttable kern;
 287     DWRITE_GLYPH_METRICS *glyphs[GLYPH_MAX/GLYPH_BLOCK_SIZE];
 288
 289     DWRITE_FONT_STYLE style;
 290     DWRITE_FONT_STRETCH stretch;
 291     DWRITE_FONT_WEIGHT weight;
 292     DWRITE_PANOSE panose;
 293     FONTSIGNATURE fontsig;
 294     UINT32 glyph_image_formats;
 295
 296     IDWriteLocalizedStrings *info_strings[DWRITE_INFORMATIONAL_STRING_SUPPORTED_SCRIPT_LANGUAGE_TAG + 1];
 297     IDWriteLocalizedStrings *family_names;
 298     IDWriteLocalizedStrings *names;
 299
 300     struct scriptshaping_cache *shaping_cache;
 301
 302     LOGFONTW lf;
 303 };
 304
 305 extern HRESULT create_numbersubstitution(DWRITE_NUMBER_SUBSTITUTION_METHOD,const WCHAR *locale,BOOL,IDWriteNumberSubstitution**);
 306 extern HRESULT create_text_format(const WCHAR *family_name, IDWriteFontCollection *collection, DWRITE_FONT_WEIGHT weight,
 307         DWRITE_FONT_STYLE style, DWRITE_FONT_STRETCH stretch, float size, const WCHAR *locale, REFIID riid,
 308         void **out);
 309 extern HRESULT create_textlayout(const struct textlayout_desc*,IDWriteTextLayout**);
 310 extern HRESULT create_trimmingsign(IDWriteFactory7 *factory, IDWriteTextFormat *format,
 311         IDWriteInlineObject **sign);
 312 extern HRESULT create_typography(IDWriteTypography**);
 313 extern HRESULT create_localizedstrings(IDWriteLocalizedStrings**);
 314 extern HRESULT add_localizedstring(IDWriteLocalizedStrings*,const WCHAR*,const WCHAR*);
 315 extern HRESULT clone_localizedstrings(IDWriteLocalizedStrings *iface, IDWriteLocalizedStrings **strings);
 316 extern void    set_en_localizedstring(IDWriteLocalizedStrings*,const WCHAR*);
 317 extern void    sort_localizedstrings(IDWriteLocalizedStrings*);
 318 extern unsigned int get_localizedstrings_count(IDWriteLocalizedStrings *strings);
 319 extern BOOL localizedstrings_contains(IDWriteLocalizedStrings *strings, const WCHAR *str);
 320 extern HRESULT get_system_fontcollection(IDWriteFactory7 *factory, DWRITE_FONT_FAMILY_MODEL family_model,
 321         IDWriteFontCollection **collection);
 322 extern HRESULT get_eudc_fontcollection(IDWriteFactory7 *factory, IDWriteFontCollection3 **collection);
 323 extern IDWriteTextAnalyzer2 *get_text_analyzer(void);
 324 extern HRESULT create_font_file(IDWriteFontFileLoader *loader, const void *reference_key, UINT32 key_size, IDWriteFontFile **font_file);
 325 extern void    init_local_fontfile_loader(void);
 326 extern IDWriteFontFileLoader *get_local_fontfile_loader(void);
 327 extern HRESULT create_fontface(const struct fontface_desc *desc, struct list *cached_list,
 328         IDWriteFontFace5 **fontface);
 329 extern HRESULT create_font_collection(IDWriteFactory7 *factory, IDWriteFontFileEnumerator *enumerator, BOOL is_system,
 330        IDWriteFontCollection3 **collection);
 331 extern HRESULT create_glyphrunanalysis(const struct glyphrunanalysis_desc*,IDWriteGlyphRunAnalysis**);
 332 extern BOOL    is_system_collection(IDWriteFontCollection*);
 333 extern HRESULT get_local_refkey(const WCHAR*,const FILETIME*,void**,UINT32*);
 334 extern HRESULT get_filestream_from_file(IDWriteFontFile*,IDWriteFontFileStream**);
 335 extern BOOL    is_face_type_supported(DWRITE_FONT_FACE_TYPE);
 336 extern HRESULT get_family_names_from_stream(IDWriteFontFileStream*,UINT32,DWRITE_FONT_FACE_TYPE,IDWriteLocalizedStrings**);
 337 extern HRESULT create_colorglyphenum(D2D1_POINT_2F origin, const DWRITE_GLYPH_RUN *run, const DWRITE_GLYPH_RUN_DESCRIPTION *desc,
 338         DWRITE_GLYPH_IMAGE_FORMATS formats, DWRITE_MEASURING_MODE mode, const DWRITE_MATRIX *transform, UINT32 palette,
 339         IDWriteColorGlyphRunEnumerator1 **enumerator);
 340 extern BOOL lb_is_newline_char(WCHAR);
 341 extern HRESULT create_system_fontfallback(IDWriteFactory7 *factory, IDWriteFontFallback1 **fallback);
 342 extern void release_system_fontfallback(IDWriteFontFallback1 *fallback);
 343 extern void release_system_fallback_data(void);
 344 extern HRESULT create_fontfallback_builder(IDWriteFactory7 *factory, IDWriteFontFallbackBuilder **builder);
 345 extern HRESULT create_matching_font(IDWriteFontCollection *collection, const WCHAR *family, DWRITE_FONT_WEIGHT weight,
 346         DWRITE_FONT_STYLE style, DWRITE_FONT_STRETCH stretch, REFIID riid, void **obj);
 347 extern HRESULT create_fontfacereference(IDWriteFactory7 *factory, IDWriteFontFile *file, UINT32 face_index,
 348         DWRITE_FONT_SIMULATIONS simulations, DWRITE_FONT_AXIS_VALUE const *axis_values, UINT32 axis_values_count,
 349         IDWriteFontFaceReference1 **reference);
 350 extern HRESULT factory_get_cached_fontface(IDWriteFactory7 *factory, IDWriteFontFile * const *files, UINT32 num_files,
 351         DWRITE_FONT_SIMULATIONS simulations, struct list **cache, REFIID riid, void **obj);
 352 extern void factory_detach_fontcollection(IDWriteFactory7 *factory, IDWriteFontCollection3 *collection);
 353 extern void factory_detach_gdiinterop(IDWriteFactory7 *factory, IDWriteGdiInterop1 *interop);
 354 extern struct fontfacecached *factory_cache_fontface(IDWriteFactory7 *factory, struct list *fontfaces,
 355         IDWriteFontFace5 *fontface);
 356 extern void    get_logfont_from_font(IDWriteFont*,LOGFONTW*);
 357 extern void    get_logfont_from_fontface(IDWriteFontFace*,LOGFONTW*);
 358 extern HRESULT get_fontsig_from_font(IDWriteFont*,FONTSIGNATURE*);
 359 extern HRESULT get_fontsig_from_fontface(IDWriteFontFace*,FONTSIGNATURE*);
 360 extern HRESULT create_gdiinterop(IDWriteFactory7 *factory, IDWriteGdiInterop1 **interop);
 361 extern void fontface_detach_from_cache(IDWriteFontFace5 *fontface);
 362 extern void factory_lock(IDWriteFactory7 *factory);
 363 extern void factory_unlock(IDWriteFactory7 *factory);
 364 extern HRESULT create_inmemory_fileloader(IDWriteInMemoryFontFileLoader **loader);
 365 extern HRESULT create_font_resource(IDWriteFactory7 *factory, IDWriteFontFile *file, UINT32 face_index,
 366         IDWriteFontResource **resource);
 367 extern HRESULT create_fontset_builder(IDWriteFactory7 *factory, IDWriteFontSetBuilder2 **ret);
 368 extern HRESULT compute_glyph_origins(DWRITE_GLYPH_RUN const *run, DWRITE_MEASURING_MODE measuring_mode,
 369         D2D1_POINT_2F baseline_origin, DWRITE_MATRIX const *transform, D2D1_POINT_2F *origins);
 370 extern HRESULT create_font_collection_from_set(IDWriteFactory7 *factory, IDWriteFontSet *set,
 371         DWRITE_FONT_FAMILY_MODEL family_model, REFGUID riid, void **ret);
 372 extern HRESULT create_system_fontset(IDWriteFactory7 *factory, REFIID riid, void **obj);
 373
 374 struct dwrite_fontface;
 375
 376 extern float fontface_get_scaled_design_advance(struct dwrite_fontface *fontface, DWRITE_MEASURING_MODE measuring_mode,
 377         float emsize, float ppdip, const DWRITE_MATRIX *transform, UINT16 glyph, BOOL is_sideways);
 378 extern struct dwrite_fontface *unsafe_impl_from_IDWriteFontFace(IDWriteFontFace *iface);
 379
 380 struct dwrite_textformat_data
 381 {
 382     WCHAR *family_name;
 383     unsigned int family_len;
 384     WCHAR *locale;
 385     unsigned int locale_len;
 386
 387     DWRITE_FONT_WEIGHT weight;
 388     DWRITE_FONT_STYLE style;
 389     DWRITE_FONT_STRETCH stretch;
 390
 391     DWRITE_PARAGRAPH_ALIGNMENT paralign;
 392     DWRITE_READING_DIRECTION readingdir;
 393     DWRITE_WORD_WRAPPING wrapping;
 394     BOOL last_line_wrapping;
 395     DWRITE_TEXT_ALIGNMENT textalignment;
 396     DWRITE_FLOW_DIRECTION flow;
 397     DWRITE_VERTICAL_GLYPH_ORIENTATION vertical_orientation;
 398     DWRITE_OPTICAL_ALIGNMENT optical_alignment;
 399     DWRITE_LINE_SPACING spacing;
 400     DWRITE_AUTOMATIC_FONT_AXES automatic_axes;
 401
 402     float fontsize;
 403     float tabstop;
 404
 405     DWRITE_TRIMMING trimming;
 406     IDWriteInlineObject *trimmingsign;
 407
 408     IDWriteFontCollection *collection;
 409     IDWriteFontFallback *fallback;
 410
 411     DWRITE_FONT_AXIS_VALUE *axis_values;
 412     unsigned int axis_values_count;
 413 };
 414
 415 struct dwrite_textformat
 416 {
 417     IDWriteTextFormat3 IDWriteTextFormat3_iface;
 418     LONG refcount;
 419     struct dwrite_textformat_data format;
 420 };
 421
 422 struct dwrite_textformat *unsafe_impl_from_IDWriteTextFormat(IDWriteTextFormat *iface);
 423 void release_format_data(struct dwrite_textformat_data *data);
 424
 425 HRESULT format_set_vertical_orientation(struct dwrite_textformat_data *format,
 426         DWRITE_VERTICAL_GLYPH_ORIENTATION orientation, BOOL *changed);
 427 HRESULT format_set_fontfallback(struct dwrite_textformat_data *format, IDWriteFontFallback *fallback);
 428 HRESULT format_get_fontfallback(const struct dwrite_textformat_data *format, IDWriteFontFallback **fallback);
 429 HRESULT format_set_font_axisvalues(struct dwrite_textformat_data *format,
 430         DWRITE_FONT_AXIS_VALUE const *axis_values, unsigned int num_values);
 431 HRESULT format_get_font_axisvalues(struct dwrite_textformat_data *format,
 432         DWRITE_FONT_AXIS_VALUE *axis_values, unsigned int num_values);
 433 HRESULT format_set_optical_alignment(struct dwrite_textformat_data *format,
 434         DWRITE_OPTICAL_ALIGNMENT alignment);
 435 HRESULT format_set_trimming(struct dwrite_textformat_data *format, DWRITE_TRIMMING const *trimming,
 436         IDWriteInlineObject *trimming_sign, BOOL *changed);
 437 HRESULT format_set_flowdirection(struct dwrite_textformat_data *format,
 438         DWRITE_FLOW_DIRECTION direction, BOOL *changed);
 439 HRESULT format_set_readingdirection(struct dwrite_textformat_data *format,
 440         DWRITE_READING_DIRECTION direction, BOOL *changed);
 441 HRESULT format_set_wordwrapping(struct dwrite_textformat_data *format, DWRITE_WORD_WRAPPING wrapping,
 442         BOOL *changed);
 443 HRESULT format_set_paralignment(struct dwrite_textformat_data *format,
 444         DWRITE_PARAGRAPH_ALIGNMENT alignment, BOOL *changed);
 445 HRESULT format_set_textalignment(struct dwrite_textformat_data *format, DWRITE_TEXT_ALIGNMENT alignment,
 446         BOOL *changed);
 447 HRESULT format_set_linespacing(struct dwrite_textformat_data *format,
 448         DWRITE_LINE_SPACING const *spacing, BOOL *changed);
 449
 450 /* Opentype font table functions */
 451 struct dwrite_font_props
 452 {
 453     DWRITE_FONT_STYLE style;
 454     DWRITE_FONT_STRETCH stretch;
 455     DWRITE_FONT_WEIGHT weight;
 456     DWRITE_PANOSE panose;
 457     FONTSIGNATURE fontsig;
 458     LOGFONTW lf;
 459     UINT32 flags;
 460     float slant_angle;
 461 };
 462
 463 struct file_stream_desc {
 464     IDWriteFontFileStream *stream;
 465     DWRITE_FONT_FACE_TYPE face_type;
 466     UINT32 face_index;
 467 };
 468
 469 extern const void* get_fontface_table(IDWriteFontFace5 *fontface, UINT32 tag,
 470         struct dwrite_fonttable *table);
 471
 472 struct tag_array
 473 {
 474     unsigned int *tags;
 475     size_t capacity;
 476     size_t count;
 477 };
 478
 479 struct ot_gsubgpos_table
 480 {
 481     struct dwrite_fonttable table;
 482     unsigned int script_list;
 483     unsigned int feature_list;
 484     unsigned int lookup_list;
 485 };
 486
 487 struct dwrite_var_axis
 488 {
 489     DWRITE_FONT_AXIS_TAG tag;
 490     float default_value;
 491     float min_value;
 492     float max_value;
 493     unsigned int attributes;
 494 };
 495
 496 extern HRESULT opentype_analyze_font(IDWriteFontFileStream*,BOOL*,DWRITE_FONT_FILE_TYPE*,DWRITE_FONT_FACE_TYPE*,UINT32*);
 497 extern HRESULT opentype_try_get_font_table(const struct file_stream_desc *stream_desc, UINT32 tag, const void **data,
 498         void **context, UINT32 *size, BOOL *exists);
 499 extern void opentype_get_font_properties(const struct file_stream_desc *stream_desc,
 500         struct dwrite_font_props *props);
 501 extern void opentype_get_font_metrics(struct file_stream_desc*,DWRITE_FONT_METRICS1*,DWRITE_CARET_METRICS*);
 502 extern void opentype_get_font_typo_metrics(struct file_stream_desc *stream_desc, unsigned int *ascent,
 503         unsigned int *descent);
 504 extern HRESULT opentype_get_font_info_strings(const struct file_stream_desc *stream_desc,
 505         DWRITE_INFORMATIONAL_STRING_ID id, IDWriteLocalizedStrings **strings);
 506 extern HRESULT opentype_get_font_familyname(const struct file_stream_desc *desc, DWRITE_FONT_FAMILY_MODEL family_model,
 507         IDWriteLocalizedStrings **names);
 508 extern HRESULT opentype_get_font_facename(struct file_stream_desc*,WCHAR*,IDWriteLocalizedStrings**);
 509 extern void opentype_get_typographic_features(struct ot_gsubgpos_table *table, unsigned int script_index,
 510         unsigned int language_index, struct tag_array *tags);
 511 extern BOOL opentype_get_vdmx_size(const struct dwrite_fonttable *table, INT ppem, UINT16 *ascent,
 512         UINT16 *descent);
 513 extern unsigned int opentype_get_cpal_palettecount(const struct dwrite_fonttable *table);
 514 extern unsigned int opentype_get_cpal_paletteentrycount(const struct dwrite_fonttable *table);
 515 extern HRESULT opentype_get_cpal_entries(const struct dwrite_fonttable *table, unsigned int palette,
 516         unsigned int first_entry_index, unsigned int entry_count, DWRITE_COLOR_F *entries);
 517 extern UINT32 opentype_get_glyph_image_formats(IDWriteFontFace5 *fontface);
 518 extern DWRITE_CONTAINER_TYPE opentype_analyze_container_type(void const *, UINT32);
 519 extern HRESULT opentype_get_kerning_pairs(struct dwrite_fontface *fontface, unsigned int count,
 520         const UINT16 *glyphs, INT32 *values);
 521 extern BOOL opentype_has_kerning_pairs(struct dwrite_fontface *fontface);
 522 extern HRESULT opentype_get_font_var_axis(const struct file_stream_desc *stream_desc, struct dwrite_var_axis **axis,
 523         unsigned int *axis_count);
 524
 525 struct dwrite_colorglyph {
 526     USHORT layer; /* [0, num_layers) index indicating current layer */
 527     /* base glyph record data, set once on initialization */
 528     USHORT first_layer;
 529     USHORT num_layers;
 530     /* current layer record data, updated every time glyph is switched to next layer */
 531     UINT16 glyph;
 532     UINT16 palette_index;
 533 };
 534
 535 extern HRESULT opentype_get_colr_glyph(const struct dwrite_fonttable *table, UINT16 glyph,
 536         struct dwrite_colorglyph *color_glyph);
 537 extern void opentype_colr_next_glyph(const struct dwrite_fonttable *table,
 538         struct dwrite_colorglyph *color_glyph);
 539
 540 enum gasp_flags {
 541     GASP_GRIDFIT             = 0x0001,
 542     GASP_DOGRAY              = 0x0002,
 543     GASP_SYMMETRIC_GRIDFIT   = 0x0004,
 544     GASP_SYMMETRIC_SMOOTHING = 0x0008,
 545 };
 546
 547 extern unsigned int opentype_get_gasp_flags(const struct dwrite_fonttable *gasp, float emsize);
 548
 549 /* BiDi helpers */
 550 struct bidi_char
 551 {
 552     unsigned int ch;
 553     UINT8 explicit;
 554     UINT8 resolved;
 555     UINT8 nominal_bidi_class;
 556     UINT8 bidi_class;
 557 };
 558
 559 extern HRESULT bidi_computelevels(struct bidi_char *chars, unsigned int count, UINT8 baselevel);
 560
 561 struct dwrite_glyphbitmap
 562 {
 563     DWORD simulations;
 564     float emsize;
 565     UINT16 glyph;
 566     INT pitch;
 567     RECT bbox;
 568     BYTE *buf;
 569     DWRITE_MATRIX *m;
 570 };
 571
 572 enum dwrite_outline_tags
 573 {
 574     OUTLINE_BEGIN_FIGURE,
 575     OUTLINE_END_FIGURE,
 576     OUTLINE_LINE,
 577     OUTLINE_BEZIER,
 578 };
 579
 580 struct dwrite_outline
 581 {
 582     struct
 583     {
 584         unsigned char *values;
 585         size_t count;
 586         size_t size;
 587     } tags;
 588
 589     struct
 590     {
 591         D2D1_POINT_2F *values;
 592         size_t count;
 593         size_t size;
 594     } points;
 595 };
 596
 597 /* Glyph shaping */
 598 enum SCRIPT_JUSTIFY
 599 {
 600     SCRIPT_JUSTIFY_NONE,
 601     SCRIPT_JUSTIFY_ARABIC_BLANK,
 602     SCRIPT_JUSTIFY_CHARACTER,
 603     SCRIPT_JUSTIFY_RESERVED1,
 604     SCRIPT_JUSTIFY_BLANK,
 605     SCRIPT_JUSTIFY_RESERVED2,
 606     SCRIPT_JUSTIFY_RESERVED3,
 607     SCRIPT_JUSTIFY_ARABIC_NORMAL,
 608     SCRIPT_JUSTIFY_ARABIC_KASHIDA,
 609     SCRIPT_JUSTIFY_ARABIC_ALEF,
 610     SCRIPT_JUSTIFY_ARABIC_HA,
 611     SCRIPT_JUSTIFY_ARABIC_RA,
 612     SCRIPT_JUSTIFY_ARABIC_BA,
 613     SCRIPT_JUSTIFY_ARABIC_BARA,
 614     SCRIPT_JUSTIFY_ARABIC_SEEN,
 615     SCRIPT_JUSTIFY_ARABIC_SEEN_M
 616 };
 617
 618 struct scriptshaping_cache
 619 {
 620     const struct shaping_font_ops *font;
 621     void *context;
 622     UINT16 upem;
 623
 624     struct ot_gsubgpos_table gsub;
 625     struct ot_gsubgpos_table gpos;
 626
 627     struct
 628     {
 629         struct dwrite_fonttable table;
 630         unsigned int classdef;
 631         unsigned int markattachclassdef;
 632         unsigned int markglyphsetdef;
 633     } gdef;
 634 };
 635
 636 struct shaping_glyph_info
 637 {
 638     /* Combined features mask. */
 639     unsigned int mask;
 640     /* Derived from glyph class, supplied by GDEF. */
 641     unsigned int props;
 642     /* Used for GPOS mark and cursive attachments. */
 643     int attach_chain;
 644     /* Only relevant for isClusterStart glyphs. Indicates text position for this cluster. */
 645     unsigned int start_text_idx;
 646     unsigned int codepoint;
 647 };
 648
 649 struct shaping_glyph_properties
 650 {
 651     UINT16 justification : 4;
 652     UINT16 isClusterStart : 1;
 653     UINT16 isDiacritic : 1;
 654     UINT16 isZeroWidthSpace : 1;
 655     UINT16 reserved : 1;
 656     UINT16 components : 4;
 657     UINT16 lig_component : 4;
 658 };
 659
 660 struct scriptshaping_context;
 661
 662 typedef void (*p_apply_context_lookup)(struct scriptshaping_context *context, unsigned int lookup_index);
 663
 664 enum shaping_feature_flags
 665 {
 666     FEATURE_GLOBAL = 0x1,
 667     FEATURE_GLOBAL_SEARCH = 0x2,
 668     FEATURE_MANUAL_ZWNJ = 0x4,
 669     FEATURE_MANUAL_ZWJ = 0x8,
 670     FEATURE_MANUAL_JOINERS = FEATURE_MANUAL_ZWNJ | FEATURE_MANUAL_ZWJ,
 671     FEATURE_HAS_FALLBACK = 0x10,
 672     FEATURE_NEEDS_FALLBACK = 0x20,
 673 };
 674
 675 struct shaping_feature
 676 {
 677     unsigned int tag;
 678     unsigned int index;
 679     unsigned int flags;
 680     unsigned int max_value;
 681     unsigned int default_value;
 682     unsigned int mask;
 683     unsigned int shift;
 684     unsigned int stage;
 685 };
 686
 687 #define MAX_SHAPING_STAGE 16
 688
 689 struct shaping_features;
 690
 691 typedef void (*stage_func)(struct scriptshaping_context *context,
 692         const struct shaping_features *features);
 693
 694 struct shaping_stage
 695 {
 696     stage_func func;
 697     unsigned int last_lookup;
 698 };
 699
 700 struct shaping_features
 701 {
 702     struct shaping_feature *features;
 703     size_t count;
 704     size_t capacity;
 705     unsigned int stage;
 706     struct shaping_stage stages[MAX_SHAPING_STAGE];
 707 };
 708
 709 struct shaper
 710 {
 711     void (*collect_features)(struct scriptshaping_context *context, struct shaping_features *features);
 712     void (*setup_masks)(struct scriptshaping_context *context, const struct shaping_features *features);
 713 };
 714
 715 extern const struct shaper arabic_shaper;
 716
 717 extern void shape_enable_feature(struct shaping_features *features, unsigned int tag,
 718         unsigned int flags);
 719 extern void shape_add_feature_full(struct shaping_features *features, unsigned int tag,
 720         unsigned int flags, unsigned int value);
 721 extern unsigned int shape_get_feature_1_mask(const struct shaping_features *features,
 722         unsigned int tag);
 723 extern void shape_start_next_stage(struct shaping_features *features, stage_func func);
 724
 725 struct scriptshaping_context
 726 {
 727     struct scriptshaping_cache *cache;
 728     const struct shaper *shaper;
 729     unsigned int script;
 730     UINT32 language_tag;
 731
 732     const WCHAR *text;
 733     unsigned int length;
 734     BOOL is_rtl;
 735     BOOL is_sideways;
 736
 737     union
 738     {
 739         struct
 740         {
 741             const UINT16 *glyphs;
 742             const DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props;
 743             DWRITE_SHAPING_TEXT_PROPERTIES *text_props;
 744             const UINT16 *clustermap;
 745             p_apply_context_lookup apply_context_lookup;
 746         } pos;
 747         struct
 748         {
 749             UINT16 *glyphs;
 750             DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props;
 751             DWRITE_SHAPING_TEXT_PROPERTIES *text_props;
 752             UINT16 *clustermap;
 753             p_apply_context_lookup apply_context_lookup;
 754             unsigned int max_glyph_count;
 755             unsigned int capacity;
 756             const WCHAR *digits;
 757         } subst;
 758         struct
 759         {
 760             UINT16 *glyphs;
 761             struct shaping_glyph_properties *glyph_props;
 762             DWRITE_SHAPING_TEXT_PROPERTIES *text_props;
 763             UINT16 *clustermap;
 764             p_apply_context_lookup apply_context_lookup;
 765         } buffer;
 766     } u;
 767
 768     const struct ot_gsubgpos_table *table; /* Either GSUB or GPOS. */
 769     struct
 770     {
 771         const DWRITE_TYPOGRAPHIC_FEATURES **features;
 772         const unsigned int *range_lengths;
 773         unsigned int range_count;
 774     } user_features;
 775     unsigned int global_mask;
 776     unsigned int lookup_mask; /* Currently processed feature mask, set in main loop. */
 777     unsigned int auto_zwj;
 778     unsigned int auto_zwnj;
 779     struct shaping_glyph_info *glyph_infos;
 780     unsigned int has_gpos_attachment : 1;
 781
 782     unsigned int cur;
 783     unsigned int glyph_count;
 784     unsigned int nesting_level_left;
 785
 786     float emsize;
 787     DWRITE_MEASURING_MODE measuring_mode;
 788     float *advances;
 789     DWRITE_GLYPH_OFFSET *offsets;
 790 };
 791
 792 struct shaping_font_ops
 793 {
 794     void (*grab_font_table)(void *context, UINT32 table, const BYTE **data, UINT32 *size, void **data_context);
 795     void (*release_font_table)(void *context, void *data_context);
 796     UINT16 (*get_font_upem)(void *context);
 797     BOOL (*has_glyph)(void *context, unsigned int codepoint);
 798     UINT16 (*get_glyph)(void *context, unsigned int codepoint);
 799 };
 800
 801 extern struct scriptshaping_cache *create_scriptshaping_cache(void *context,
 802         const struct shaping_font_ops *font_ops);
 803 extern void release_scriptshaping_cache(struct scriptshaping_cache*);
 804 extern struct scriptshaping_cache *fontface_get_shaping_cache(struct dwrite_fontface *fontface);
 805
 806 extern void opentype_layout_scriptshaping_cache_init(struct scriptshaping_cache *cache);
 807 extern unsigned int opentype_layout_find_script(const struct scriptshaping_cache *cache, unsigned int kind,
 808         DWORD tag, unsigned int *script_index);
 809 extern unsigned int opentype_layout_find_language(const struct scriptshaping_cache *cache, unsigned int kind,
 810         DWORD tag, unsigned int script_index, unsigned int *language_index);
 811 extern void opentype_layout_apply_gsub_features(struct scriptshaping_context *context, unsigned int script_index,
 812         unsigned int language_index, struct shaping_features *features);
 813 extern void opentype_layout_apply_gpos_features(struct scriptshaping_context *context, unsigned int script_index,
 814         unsigned int language_index, struct shaping_features *features);
 815 extern BOOL opentype_layout_check_feature(struct scriptshaping_context *context, unsigned int script_index,
 816         unsigned int language_index, struct shaping_feature *feature, unsigned int glyph_count,
 817         const UINT16 *glyphs, UINT8 *feature_applies);
 818 extern void opentype_layout_unsafe_to_break(struct scriptshaping_context *context, unsigned int start,
 819         unsigned int end);
 820 extern BOOL opentype_has_vertical_variants(struct dwrite_fontface *fontface);
 821 extern HRESULT opentype_get_vertical_glyph_variants(struct dwrite_fontface *fontface, unsigned int glyph_count,
 822         const UINT16 *nominal_glyphs, UINT16 *glyphs);
 823
 824 extern HRESULT shape_get_glyphs(struct scriptshaping_context *context, const unsigned int *scripts);
 825 extern HRESULT shape_get_positions(struct scriptshaping_context *context, const unsigned int *scripts);
 826 extern HRESULT shape_get_typographic_features(struct scriptshaping_context *context, const unsigned int *scripts,
 827         unsigned int max_tagcount, unsigned int *actual_tagcount, DWRITE_FONT_FEATURE_TAG *tags);
 828 extern HRESULT shape_check_typographic_feature(struct scriptshaping_context *context, const unsigned int *scripts,
 829         unsigned int tag, unsigned int glyph_count, const UINT16 *glyphs, UINT8 *feature_applies);
 830
 831 struct font_data_context;
 832 extern HMODULE dwrite_module;
 833
 834 extern void dwrite_fontface_get_glyph_bbox(IDWriteFontFace *fontface, struct dwrite_glyphbitmap *bitmap);
 835
 836 #endif /* __WINE_DWRITE_PRIVATE_H */