dlls/dwrite/font.c

   1 /*
   2  *    Font and collections
   3  *
   4  * Copyright 2012 Nikolay Sivov for CodeWeavers
   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 #define COBJMACROS
  22
  23 #include "dwrite.h"
  24 #include "dwrite_private.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(dwrite);
  29
  30 /* PANOSE is 10 bytes in size, need to pack the structure properly */
  31 #include "pshpack2.h"
  32 typedef struct
  33 {
  34     ULONG version;
  35     ULONG revision;
  36     ULONG checksumadj;
  37     ULONG magic;
  38     USHORT flags;
  39     USHORT unitsPerEm;
  40     ULONGLONG created;
  41     ULONGLONG modified;
  42     SHORT xMin;
  43     SHORT yMin;
  44     SHORT xMax;
  45     SHORT yMax;
  46     USHORT macStyle;
  47     USHORT lowestRecPPEM;
  48     SHORT direction_hint;
  49     SHORT index_format;
  50     SHORT glyphdata_format;
  51 } TT_HEAD;
  52
  53 typedef struct
  54 {
  55     ULONG Version;
  56     ULONG italicAngle;
  57     SHORT underlinePosition;
  58     SHORT underlineThickness;
  59     ULONG fixed_pitch;
  60     ULONG minmemType42;
  61     ULONG maxmemType42;
  62     ULONG minmemType1;
  63     ULONG maxmemType1;
  64 } TT_POST;
  65
  66 typedef struct
  67 {
  68     USHORT version;
  69     SHORT xAvgCharWidth;
  70     USHORT usWeightClass;
  71     USHORT usWidthClass;
  72     SHORT fsType;
  73     SHORT ySubscriptXSize;
  74     SHORT ySubscriptYSize;
  75     SHORT ySubscriptXOffset;
  76     SHORT ySubscriptYOffset;
  77     SHORT ySuperscriptXSize;
  78     SHORT ySuperscriptYSize;
  79     SHORT ySuperscriptXOffset;
  80     SHORT ySuperscriptYOffset;
  81     SHORT yStrikeoutSize;
  82     SHORT yStrikeoutPosition;
  83     SHORT sFamilyClass;
  84     PANOSE panose;
  85     ULONG ulUnicodeRange1;
  86     ULONG ulUnicodeRange2;
  87     ULONG ulUnicodeRange3;
  88     ULONG ulUnicodeRange4;
  89     CHAR achVendID[4];
  90     USHORT fsSelection;
  91     USHORT usFirstCharIndex;
  92     USHORT usLastCharIndex;
  93     /* According to the Apple spec, original version didn't have the below fields,
  94      * version numbers were taken from the OpenType spec.
  95      */
  96     /* version 0 (TrueType 1.5) */
  97     USHORT sTypoAscender;
  98     USHORT sTypoDescender;
  99     USHORT sTypoLineGap;
 100     USHORT usWinAscent;
 101     USHORT usWinDescent;
 102     /* version 1 (TrueType 1.66) */
 103     ULONG ulCodePageRange1;
 104     ULONG ulCodePageRange2;
 105     /* version 2 (OpenType 1.2) */
 106     SHORT sxHeight;
 107     SHORT sCapHeight;
 108     USHORT usDefaultChar;
 109     USHORT usBreakChar;
 110     USHORT usMaxContext;
 111 } TT_OS2_V2;
 112 #include "poppack.h"
 113
 114 #ifdef WORDS_BIGENDIAN
 115 #define GET_BE_WORD(x) (x)
 116 #define GET_BE_DWORD(x) (x)
 117 #else
 118 #define GET_BE_WORD(x) MAKEWORD(HIBYTE(x), LOBYTE(x))
 119 #define GET_BE_DWORD(x) MAKELONG(GET_BE_WORD(HIWORD(x)), GET_BE_WORD(LOWORD(x)));
 120 #endif
 121
 122 #define MS_MAKE_TAG(ch0, ch1, ch2, ch3) \
 123                     ((DWORD)(BYTE)(ch0) | ((DWORD)(BYTE)(ch1) << 8) | \
 124                     ((DWORD)(BYTE)(ch2) << 16) | ((DWORD)(BYTE)(ch3) << 24))
 125
 126 #define MS_HEAD_TAG MS_MAKE_TAG('h','e','a','d')
 127 #define MS_OS2_TAG  MS_MAKE_TAG('O','S','/','2')
 128 #define MS_POST_TAG MS_MAKE_TAG('p','o','s','t')
 129
 130 struct dwrite_fontcollection {
 131     IDWriteFontCollection IDWriteFontCollection_iface;
 132
 133     WCHAR **families;
 134     UINT32 count;
 135     int alloc;
 136 };
 137
 138 static IDWriteFontCollection *system_collection;
 139
 140 struct dwrite_fontfamily {
 141     IDWriteFontFamily IDWriteFontFamily_iface;
 142     LONG ref;
 143
 144     WCHAR *familyname;
 145 };
 146
 147 struct dwrite_font {
 148     IDWriteFont IDWriteFont_iface;
 149     LONG ref;
 150
 151     IDWriteFontFamily *family;
 152     IDWriteFontFace *face;
 153     DWRITE_FONT_STYLE style;
 154     DWRITE_FONT_STRETCH stretch;
 155     DWRITE_FONT_WEIGHT weight;
 156     DWRITE_FONT_METRICS metrics;
 157     WCHAR *facename;
 158 };
 159
 160 struct dwrite_fontface {
 161     IDWriteFontFace IDWriteFontFace_iface;
 162     LONG ref;
 163
 164     LOGFONTW logfont;
 165 };
 166
 167 static HRESULT create_fontfamily(const WCHAR *familyname, IDWriteFontFamily **family);
 168
 169 static inline struct dwrite_fontface *impl_from_IDWriteFontFace(IDWriteFontFace *iface)
 170 {
 171     return CONTAINING_RECORD(iface, struct dwrite_fontface, IDWriteFontFace_iface);
 172 }
 173
 174 static inline struct dwrite_font *impl_from_IDWriteFont(IDWriteFont *iface)
 175 {
 176     return CONTAINING_RECORD(iface, struct dwrite_font, IDWriteFont_iface);
 177 }
 178
 179 static inline struct dwrite_fontfamily *impl_from_IDWriteFontFamily(IDWriteFontFamily *iface)
 180 {
 181     return CONTAINING_RECORD(iface, struct dwrite_fontfamily, IDWriteFontFamily_iface);
 182 }
 183
 184 static inline struct dwrite_fontcollection *impl_from_IDWriteFontCollection(IDWriteFontCollection *iface)
 185 {
 186     return CONTAINING_RECORD(iface, struct dwrite_fontcollection, IDWriteFontCollection_iface);
 187 }
 188
 189 static HRESULT WINAPI dwritefontface_QueryInterface(IDWriteFontFace *iface, REFIID riid, void **obj)
 190 {
 191     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 192
 193     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 194
 195     if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDWriteFontFace))
 196     {
 197         *obj = iface;
 198         IDWriteFontFace_AddRef(iface);
 199         return S_OK;
 200     }
 201
 202     *obj = NULL;
 203     return E_NOINTERFACE;
 204 }
 205
 206 static ULONG WINAPI dwritefontface_AddRef(IDWriteFontFace *iface)
 207 {
 208     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 209     ULONG ref = InterlockedIncrement(&This->ref);
 210     TRACE("(%p)->(%d)\n", This, ref);
 211     return ref;
 212 }
 213
 214 static ULONG WINAPI dwritefontface_Release(IDWriteFontFace *iface)
 215 {
 216     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 217     ULONG ref = InterlockedDecrement(&This->ref);
 218
 219     TRACE("(%p)->(%d)\n", This, ref);
 220
 221     if (!ref)
 222         heap_free(This);
 223
 224     return ref;
 225 }
 226
 227 static DWRITE_FONT_FACE_TYPE WINAPI dwritefontface_GetType(IDWriteFontFace *iface)
 228 {
 229     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 230     FIXME("(%p): stub\n", This);
 231     return DWRITE_FONT_FACE_TYPE_UNKNOWN;
 232 }
 233
 234 static HRESULT WINAPI dwritefontface_GetFiles(IDWriteFontFace *iface, UINT32 *number_of_files,
 235     IDWriteFontFile **fontfiles)
 236 {
 237     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 238     FIXME("(%p)->(%p %p): stub\n", This, number_of_files, fontfiles);
 239     return E_NOTIMPL;
 240 }
 241
 242 static UINT32 WINAPI dwritefontface_GetIndex(IDWriteFontFace *iface)
 243 {
 244     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 245     FIXME("(%p): stub\n", This);
 246     return 0;
 247 }
 248
 249 static DWRITE_FONT_SIMULATIONS WINAPI dwritefontface_GetSimulations(IDWriteFontFace *iface)
 250 {
 251     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 252     FIXME("(%p): stub\n", This);
 253     return DWRITE_FONT_SIMULATIONS_NONE;
 254 }
 255
 256 static BOOL WINAPI dwritefontface_IsSymbolFont(IDWriteFontFace *iface)
 257 {
 258     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 259     FIXME("(%p): stub\n", This);
 260     return FALSE;
 261 }
 262
 263 static void WINAPI dwritefontface_GetMetrics(IDWriteFontFace *iface, DWRITE_FONT_METRICS *metrics)
 264 {
 265     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 266     FIXME("(%p)->(%p): stub\n", This, metrics);
 267 }
 268
 269 static UINT16 WINAPI dwritefontface_GetGlyphCount(IDWriteFontFace *iface)
 270 {
 271     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 272     FIXME("(%p): stub\n", This);
 273     return 0;
 274 }
 275
 276 static HRESULT WINAPI dwritefontface_GetDesignGlyphMetrics(IDWriteFontFace *iface,
 277     UINT16 const *glyph_indices, UINT32 glyph_count, DWRITE_GLYPH_METRICS *metrics, BOOL is_sideways)
 278 {
 279     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 280     FIXME("(%p)->(%p %u %p %d): stub\n", This, glyph_indices, glyph_count, metrics, is_sideways);
 281     return E_NOTIMPL;
 282 }
 283
 284 static HRESULT WINAPI dwritefontface_GetGlyphIndices(IDWriteFontFace *iface, UINT32 const *codepoints,
 285     UINT32 count, UINT16 *glyph_indices)
 286 {
 287     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 288     HFONT hfont;
 289     WCHAR *str;
 290     HDC hdc;
 291     unsigned int i;
 292
 293     TRACE("(%p)->(%p %u %p)\n", This, codepoints, count, glyph_indices);
 294
 295     str = heap_alloc(count*sizeof(WCHAR));
 296     if (!str) return E_OUTOFMEMORY;
 297
 298     for (i = 0; i < count; i++)
 299         str[i] = codepoints[i] < 0x10000 ? codepoints[i] : '?';
 300
 301     hdc = CreateCompatibleDC(0);
 302     hfont = CreateFontIndirectW(&This->logfont);
 303     SelectObject(hdc, hfont);
 304
 305     GetGlyphIndicesW(hdc, str, count, glyph_indices, 0);
 306     heap_free(str);
 307
 308     DeleteDC(hdc);
 309     DeleteObject(hfont);
 310
 311     return S_OK;
 312 }
 313
 314 static HRESULT WINAPI dwritefontface_TryGetFontTable(IDWriteFontFace *iface, UINT32 table_tag,
 315     const void **table_data, UINT32 *table_size, void **context, BOOL *exists)
 316 {
 317     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 318     FIXME("(%p)->(%u %p %p %p %p): stub\n", This, table_tag, table_data, table_size, context, exists);
 319     return E_NOTIMPL;
 320 }
 321
 322 static void WINAPI dwritefontface_ReleaseFontTable(IDWriteFontFace *iface, void *table_context)
 323 {
 324     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 325     FIXME("(%p)->(%p): stub\n", This, table_context);
 326 }
 327
 328 static HRESULT WINAPI dwritefontface_GetGlyphRunOutline(IDWriteFontFace *iface, FLOAT emSize,
 329     UINT16 const *glyph_indices, FLOAT const* glyph_advances, DWRITE_GLYPH_OFFSET const *glyph_offsets,
 330     UINT32 glyph_count, BOOL is_sideways, BOOL is_rtl, IDWriteGeometrySink *geometrysink)
 331 {
 332     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 333     FIXME("(%p)->(%f %p %p %p %u %d %d %p): stub\n", This, emSize, glyph_indices, glyph_advances, glyph_offsets,
 334         glyph_count, is_sideways, is_rtl, geometrysink);
 335     return E_NOTIMPL;
 336 }
 337
 338 static HRESULT WINAPI dwritefontface_GetRecommendedRenderingMode(IDWriteFontFace *iface, FLOAT emSize,
 339     FLOAT pixels_per_dip, DWRITE_MEASURING_MODE mode, IDWriteRenderingParams* params, DWRITE_RENDERING_MODE* rendering_mode)
 340 {
 341     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 342     FIXME("(%p)->(%f %f %d %p %p): stub\n", This, emSize, pixels_per_dip, mode, params, rendering_mode);
 343     return E_NOTIMPL;
 344 }
 345
 346 static HRESULT WINAPI dwritefontface_GetGdiCompatibleMetrics(IDWriteFontFace *iface, FLOAT emSize, FLOAT pixels_per_dip,
 347     DWRITE_MATRIX const *transform, DWRITE_FONT_METRICS *metrics)
 348 {
 349     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 350     FIXME("(%p)->(%f %f %p %p): stub\n", This, emSize, pixels_per_dip, transform, metrics);
 351     return E_NOTIMPL;
 352 }
 353
 354 static HRESULT WINAPI dwritefontface_GetGdiCompatibleGlyphMetrics(IDWriteFontFace *iface, FLOAT emSize, FLOAT pixels_per_dip,
 355     DWRITE_MATRIX const *transform, BOOL use_gdi_natural, UINT16 const *glyph_indices, UINT32 glyph_count,
 356     DWRITE_GLYPH_METRICS *metrics, BOOL is_sideways)
 357 {
 358     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 359     FIXME("(%p)->(%f %f %p %d %p %u %p %d): stub\n", This, emSize, pixels_per_dip, transform, use_gdi_natural, glyph_indices,
 360         glyph_count, metrics, is_sideways);
 361     return E_NOTIMPL;
 362 }
 363
 364 static const IDWriteFontFaceVtbl dwritefontfacevtbl = {
 365     dwritefontface_QueryInterface,
 366     dwritefontface_AddRef,
 367     dwritefontface_Release,
 368     dwritefontface_GetType,
 369     dwritefontface_GetFiles,
 370     dwritefontface_GetIndex,
 371     dwritefontface_GetSimulations,
 372     dwritefontface_IsSymbolFont,
 373     dwritefontface_GetMetrics,
 374     dwritefontface_GetGlyphCount,
 375     dwritefontface_GetDesignGlyphMetrics,
 376     dwritefontface_GetGlyphIndices,
 377     dwritefontface_TryGetFontTable,
 378     dwritefontface_ReleaseFontTable,
 379     dwritefontface_GetGlyphRunOutline,
 380     dwritefontface_GetRecommendedRenderingMode,
 381     dwritefontface_GetGdiCompatibleMetrics,
 382     dwritefontface_GetGdiCompatibleGlyphMetrics
 383 };
 384
 385 static HRESULT create_fontface(struct dwrite_font *font, IDWriteFontFace **face)
 386 {
 387     struct dwrite_fontface *This;
 388
 389     *face = NULL;
 390
 391     This = heap_alloc(sizeof(struct dwrite_fontface));
 392     if (!This) return E_OUTOFMEMORY;
 393
 394     This->IDWriteFontFace_iface.lpVtbl = &dwritefontfacevtbl;
 395     This->ref = 1;
 396
 397     memset(&This->logfont, 0, sizeof(This->logfont));
 398     This->logfont.lfItalic = font->style == DWRITE_FONT_STYLE_ITALIC;
 399     strcpyW(This->logfont.lfFaceName, font->facename);
 400
 401     *face = &This->IDWriteFontFace_iface;
 402
 403     return S_OK;
 404 }
 405
 406 static HRESULT WINAPI dwritefont_QueryInterface(IDWriteFont *iface, REFIID riid, void **obj)
 407 {
 408     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 409
 410     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 411
 412     if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDWriteFont))
 413     {
 414         *obj = iface;
 415         IDWriteFont_AddRef(iface);
 416         return S_OK;
 417     }
 418
 419     *obj = NULL;
 420     return E_NOINTERFACE;
 421 }
 422
 423 static ULONG WINAPI dwritefont_AddRef(IDWriteFont *iface)
 424 {
 425     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 426     ULONG ref = InterlockedIncrement(&This->ref);
 427     TRACE("(%p)->(%d)\n", This, ref);
 428     return ref;
 429 }
 430
 431 static ULONG WINAPI dwritefont_Release(IDWriteFont *iface)
 432 {
 433     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 434     ULONG ref = InterlockedDecrement(&This->ref);
 435
 436     TRACE("(%p)->(%d)\n", This, ref);
 437
 438     if (!ref)
 439     {
 440         if (This->face) IDWriteFontFace_Release(This->face);
 441         IDWriteFontFamily_Release(This->family);
 442         heap_free(This->facename);
 443         heap_free(This);
 444     }
 445
 446     return ref;
 447 }
 448
 449 static HRESULT WINAPI dwritefont_GetFontFamily(IDWriteFont *iface, IDWriteFontFamily **family)
 450 {
 451     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 452     TRACE("(%p)->(%p)\n", This, family);
 453
 454     *family = This->family;
 455     IDWriteFontFamily_AddRef(*family);
 456     return S_OK;
 457 }
 458
 459 static DWRITE_FONT_WEIGHT WINAPI dwritefont_GetWeight(IDWriteFont *iface)
 460 {
 461     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 462     TRACE("(%p)\n", This);
 463     return This->weight;
 464 }
 465
 466 static DWRITE_FONT_STRETCH WINAPI dwritefont_GetStretch(IDWriteFont *iface)
 467 {
 468     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 469     TRACE("(%p)\n", This);
 470     return This->stretch;
 471 }
 472
 473 static DWRITE_FONT_STYLE WINAPI dwritefont_GetStyle(IDWriteFont *iface)
 474 {
 475     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 476     TRACE("(%p)\n", This);
 477     return This->style;
 478 }
 479
 480 static BOOL WINAPI dwritefont_IsSymbolFont(IDWriteFont *iface)
 481 {
 482     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 483     FIXME("(%p): stub\n", This);
 484     return FALSE;
 485 }
 486
 487 static HRESULT WINAPI dwritefont_GetFaceNames(IDWriteFont *iface, IDWriteLocalizedStrings **names)
 488 {
 489     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 490     FIXME("(%p)->(%p): stub\n", This, names);
 491     return E_NOTIMPL;
 492 }
 493
 494 static HRESULT WINAPI dwritefont_GetInformationalStrings(IDWriteFont *iface,
 495     DWRITE_INFORMATIONAL_STRING_ID stringid, IDWriteLocalizedStrings **strings, BOOL *exists)
 496 {
 497     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 498     FIXME("(%p)->(%d %p %p): stub\n", This, stringid, strings, exists);
 499     return E_NOTIMPL;
 500 }
 501
 502 static DWRITE_FONT_SIMULATIONS WINAPI dwritefont_GetSimulations(IDWriteFont *iface)
 503 {
 504     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 505     FIXME("(%p): stub\n", This);
 506     return DWRITE_FONT_SIMULATIONS_NONE;
 507 }
 508
 509 static void WINAPI dwritefont_GetMetrics(IDWriteFont *iface, DWRITE_FONT_METRICS *metrics)
 510 {
 511     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 512
 513     TRACE("(%p)->(%p)\n", This, metrics);
 514     *metrics = This->metrics;
 515 }
 516
 517 static HRESULT WINAPI dwritefont_HasCharacter(IDWriteFont *iface, UINT32 value, BOOL *exists)
 518 {
 519     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 520     FIXME("(%p)->(0x%08x %p): stub\n", This, value, exists);
 521     return E_NOTIMPL;
 522 }
 523
 524 static HRESULT WINAPI dwritefont_CreateFontFace(IDWriteFont *iface, IDWriteFontFace **face)
 525 {
 526     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 527
 528     TRACE("(%p)->(%p)\n", This, face);
 529
 530     if (!This->face)
 531     {
 532         HRESULT hr = create_fontface(This, &This->face);
 533         if (FAILED(hr)) return hr;
 534     }
 535
 536     *face = This->face;
 537     IDWriteFontFace_AddRef(*face);
 538
 539     return S_OK;
 540 }
 541
 542 static const IDWriteFontVtbl dwritefontvtbl = {
 543     dwritefont_QueryInterface,
 544     dwritefont_AddRef,
 545     dwritefont_Release,
 546     dwritefont_GetFontFamily,
 547     dwritefont_GetWeight,
 548     dwritefont_GetStretch,
 549     dwritefont_GetStyle,
 550     dwritefont_IsSymbolFont,
 551     dwritefont_GetFaceNames,
 552     dwritefont_GetInformationalStrings,
 553     dwritefont_GetSimulations,
 554     dwritefont_GetMetrics,
 555     dwritefont_HasCharacter,
 556     dwritefont_CreateFontFace
 557 };
 558
 559 static HRESULT WINAPI dwritefontfamily_QueryInterface(IDWriteFontFamily *iface, REFIID riid, void **obj)
 560 {
 561     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 562     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 563
 564     if (IsEqualIID(riid, &IID_IUnknown) ||
 565         IsEqualIID(riid, &IID_IDWriteFontList) ||
 566         IsEqualIID(riid, &IID_IDWriteFontFamily))
 567     {
 568         *obj = iface;
 569         IDWriteFontFamily_AddRef(iface);
 570         return S_OK;
 571     }
 572
 573     *obj = NULL;
 574     return E_NOINTERFACE;
 575 }
 576
 577 static ULONG WINAPI dwritefontfamily_AddRef(IDWriteFontFamily *iface)
 578 {
 579     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 580     ULONG ref = InterlockedIncrement(&This->ref);
 581     TRACE("(%p)->(%d)\n", This, ref);
 582     return ref;
 583 }
 584
 585 static ULONG WINAPI dwritefontfamily_Release(IDWriteFontFamily *iface)
 586 {
 587     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 588     ULONG ref = InterlockedDecrement(&This->ref);
 589
 590     TRACE("(%p)->(%d)\n", This, ref);
 591
 592     if (!ref)
 593     {
 594         heap_free(This->familyname);
 595         heap_free(This);
 596     }
 597
 598     return ref;
 599 }
 600
 601 static HRESULT WINAPI dwritefontfamily_GetFontCollection(IDWriteFontFamily *iface, IDWriteFontCollection **collection)
 602 {
 603     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 604     FIXME("(%p)->(%p): stub\n", This, collection);
 605     return E_NOTIMPL;
 606 }
 607
 608 static UINT32 WINAPI dwritefontfamily_GetFontCount(IDWriteFontFamily *iface)
 609 {
 610     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 611     FIXME("(%p): stub\n", This);
 612     return 0;
 613 }
 614
 615 static HRESULT WINAPI dwritefontfamily_GetFont(IDWriteFontFamily *iface, UINT32 index, IDWriteFont **font)
 616 {
 617     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 618     FIXME("(%p)->(%u %p): stub\n", This, index, font);
 619     return E_NOTIMPL;
 620 }
 621
 622 static HRESULT WINAPI dwritefontfamily_GetFamilyNames(IDWriteFontFamily *iface, IDWriteLocalizedStrings **names)
 623 {
 624     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 625     static const WCHAR enusW[] = {'e','n','-','u','s',0};
 626     HRESULT hr;
 627
 628     TRACE("(%p)->(%p)\n", This, names);
 629
 630     hr = create_localizedstrings(names);
 631     if (FAILED(hr)) return hr;
 632
 633     return add_localizedstring(*names, enusW, This->familyname);
 634 }
 635
 636 static HRESULT WINAPI dwritefontfamily_GetFirstMatchingFont(IDWriteFontFamily *iface, DWRITE_FONT_WEIGHT weight,
 637     DWRITE_FONT_STRETCH stretch, DWRITE_FONT_STYLE style, IDWriteFont **font)
 638 {
 639     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 640     LOGFONTW lf;
 641
 642     TRACE("(%p)->(%d %d %d %p)\n", This, weight, stretch, style, font);
 643
 644     memset(&lf, 0, sizeof(lf));
 645     lf.lfWeight = weight;
 646     lf.lfItalic = style == DWRITE_FONT_STYLE_ITALIC;
 647     strcpyW(lf.lfFaceName, This->familyname);
 648
 649     return create_font_from_logfont(&lf, font);
 650 }
 651
 652 static HRESULT WINAPI dwritefontfamily_GetMatchingFonts(IDWriteFontFamily *iface, DWRITE_FONT_WEIGHT weight,
 653     DWRITE_FONT_STRETCH stretch, DWRITE_FONT_STYLE style, IDWriteFontList **fonts)
 654 {
 655     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 656     FIXME("(%p)->(%d %d %d %p): stub\n", This, weight, stretch, style, fonts);
 657     return E_NOTIMPL;
 658 }
 659
 660 static const IDWriteFontFamilyVtbl fontfamilyvtbl = {
 661     dwritefontfamily_QueryInterface,
 662     dwritefontfamily_AddRef,
 663     dwritefontfamily_Release,
 664     dwritefontfamily_GetFontCollection,
 665     dwritefontfamily_GetFontCount,
 666     dwritefontfamily_GetFont,
 667     dwritefontfamily_GetFamilyNames,
 668     dwritefontfamily_GetFirstMatchingFont,
 669     dwritefontfamily_GetMatchingFonts
 670 };
 671
 672 static HRESULT WINAPI dwritefontcollection_QueryInterface(IDWriteFontCollection *iface, REFIID riid, void **obj)
 673 {
 674     struct dwrite_fontcollection *This = impl_from_IDWriteFontCollection(iface);
 675     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 676
 677     if (IsEqualIID(riid, &IID_IUnknown) ||
 678         IsEqualIID(riid, &IID_IDWriteFontCollection))
 679     {
 680         *obj = iface;
 681         IDWriteFontCollection_AddRef(iface);
 682         return S_OK;
 683     }
 684
 685     *obj = NULL;
 686     return E_NOINTERFACE;
 687 }
 688
 689 static ULONG WINAPI dwritesysfontcollection_AddRef(IDWriteFontCollection *iface)
 690 {
 691     return 2;
 692 }
 693
 694 static ULONG WINAPI dwritesysfontcollection_Release(IDWriteFontCollection *iface)
 695 {
 696     return 1;
 697 }
 698
 699 static UINT32 WINAPI dwritefontcollection_GetFontFamilyCount(IDWriteFontCollection *iface)
 700 {
 701     struct dwrite_fontcollection *This = impl_from_IDWriteFontCollection(iface);
 702     TRACE("(%p)\n", This);
 703     return This->count;
 704 }
 705
 706 static HRESULT WINAPI dwritefontcollection_GetFontFamily(IDWriteFontCollection *iface, UINT32 index, IDWriteFontFamily **family)
 707 {
 708     struct dwrite_fontcollection *This = impl_from_IDWriteFontCollection(iface);
 709
 710     TRACE("(%p)->(%u %p)\n", This, index, family);
 711
 712     if (index >= This->count)
 713     {
 714         *family = NULL;
 715         return E_FAIL;
 716     }
 717
 718     return create_fontfamily(This->families[index], family);
 719 }
 720
 721 static HRESULT WINAPI dwritefontcollection_FindFamilyName(IDWriteFontCollection *iface, const WCHAR *name, UINT32 *index, BOOL *exists)
 722 {
 723     struct dwrite_fontcollection *This = impl_from_IDWriteFontCollection(iface);
 724     UINT32 i;
 725
 726     TRACE("(%p)->(%s %p %p)\n", This, debugstr_w(name), index, exists);
 727
 728     for (i = 0; i < This->count; i++)
 729         if (!strcmpW(This->families[i], name))
 730         {
 731             *index = i;
 732             *exists = TRUE;
 733             return S_OK;
 734         }
 735
 736     *index = (UINT32)-1;
 737     *exists = FALSE;
 738
 739     return S_OK;
 740 }
 741
 742 static HRESULT WINAPI dwritefontcollection_GetFontFromFontFace(IDWriteFontCollection *iface, IDWriteFontFace *face, IDWriteFont **font)
 743 {
 744     struct dwrite_fontcollection *This = impl_from_IDWriteFontCollection(iface);
 745     FIXME("(%p)->(%p %p): stub\n", This, face, font);
 746     return E_NOTIMPL;
 747 }
 748
 749 static const IDWriteFontCollectionVtbl systemfontcollectionvtbl = {
 750     dwritefontcollection_QueryInterface,
 751     dwritesysfontcollection_AddRef,
 752     dwritesysfontcollection_Release,
 753     dwritefontcollection_GetFontFamilyCount,
 754     dwritefontcollection_GetFontFamily,
 755     dwritefontcollection_FindFamilyName,
 756     dwritefontcollection_GetFontFromFontFace
 757 };
 758
 759 static HRESULT add_family_syscollection(struct dwrite_fontcollection *collection, const WCHAR *family)
 760 {
 761     /* check for duplicate family name */
 762     if (collection->count && !strcmpW(collection->families[collection->count-1], family)) return S_OK;
 763
 764     /* double array length */
 765     if (collection->count == collection->alloc)
 766     {
 767         collection->alloc *= 2;
 768         collection->families = heap_realloc(collection->families, collection->alloc*sizeof(WCHAR*));
 769     }
 770
 771     collection->families[collection->count++] = heap_strdupW(family);
 772     TRACE("family name %s\n", debugstr_w(family));
 773
 774     return S_OK;
 775 }
 776
 777 static INT CALLBACK enum_font_families(const LOGFONTW *lf, const TEXTMETRICW *tm, DWORD type, LPARAM lParam)
 778 {
 779     struct dwrite_fontcollection *collection = (struct dwrite_fontcollection*)lParam;
 780     return add_family_syscollection(collection, lf->lfFaceName) == S_OK;
 781 }
 782
 783 static void release_font_collection(IDWriteFontCollection *iface)
 784 {
 785     struct dwrite_fontcollection *This = impl_from_IDWriteFontCollection(iface);
 786     unsigned int i;
 787
 788     for (i = 0; i < This->count; i++)
 789         heap_free(This->families[i]);
 790     heap_free(This->families);
 791     heap_free(This);
 792 }
 793
 794 void release_system_fontcollection(void)
 795 {
 796     if (system_collection)
 797         release_font_collection(system_collection);
 798 }
 799
 800 HRESULT get_system_fontcollection(IDWriteFontCollection **collection)
 801 {
 802     if (!system_collection)
 803     {
 804         struct dwrite_fontcollection *This;
 805         LOGFONTW lf;
 806         HDC hdc;
 807
 808         *collection = NULL;
 809
 810         This = heap_alloc(sizeof(struct dwrite_fontcollection));
 811         if (!This) return E_OUTOFMEMORY;
 812
 813         This->IDWriteFontCollection_iface.lpVtbl = &systemfontcollectionvtbl;
 814         This->alloc = 50;
 815         This->count = 0;
 816         This->families = heap_alloc(This->alloc*sizeof(WCHAR*));
 817
 818         TRACE("building system font collection:\n");
 819
 820         hdc = CreateCompatibleDC(0);
 821         memset(&lf, 0, sizeof(lf));
 822         lf.lfCharSet = DEFAULT_CHARSET;
 823         lf.lfPitchAndFamily = DEFAULT_PITCH;
 824         lf.lfFaceName[0] = 0;
 825         EnumFontFamiliesExW(hdc, &lf, enum_font_families, (LPARAM)This, 0);
 826         DeleteDC(hdc);
 827
 828         if (InterlockedCompareExchangePointer((void**)&system_collection, &This->IDWriteFontCollection_iface, NULL))
 829             release_font_collection(&This->IDWriteFontCollection_iface);
 830     }
 831
 832     *collection = system_collection;
 833
 834     return S_OK;
 835 }
 836
 837 static HRESULT create_fontfamily(const WCHAR *familyname, IDWriteFontFamily **family)
 838 {
 839     struct dwrite_fontfamily *This;
 840
 841     *family = NULL;
 842
 843     This = heap_alloc(sizeof(struct dwrite_fontfamily));
 844     if (!This) return E_OUTOFMEMORY;
 845
 846     This->IDWriteFontFamily_iface.lpVtbl = &fontfamilyvtbl;
 847     This->ref = 1;
 848     This->familyname = heap_strdupW(familyname);
 849
 850     *family = &This->IDWriteFontFamily_iface;
 851
 852     return S_OK;
 853 }
 854
 855 static void get_font_properties(struct dwrite_font *font, HDC hdc)
 856 {
 857     TT_OS2_V2 tt_os2;
 858     TT_HEAD tt_head;
 859     TT_POST tt_post;
 860     LONG size;
 861
 862     /* default stretch and weight to normal */
 863     font->stretch = DWRITE_FONT_STRETCH_NORMAL;
 864     font->weight = DWRITE_FONT_WEIGHT_NORMAL;
 865
 866     memset(&font->metrics, 0, sizeof(font->metrics));
 867
 868     size = GetFontData(hdc, MS_OS2_TAG, 0, NULL, 0);
 869     if (size != GDI_ERROR)
 870     {
 871         if (size > sizeof(tt_os2)) size = sizeof(tt_os2);
 872
 873         memset(&tt_os2, 0, sizeof(tt_os2));
 874         if (GetFontData(hdc, MS_OS2_TAG, 0, &tt_os2, size) != size) return;
 875
 876         /* DWRITE_FONT_STRETCH enumeration values directly match font data values */
 877         if (GET_BE_WORD(tt_os2.usWidthClass) <= DWRITE_FONT_STRETCH_ULTRA_EXPANDED)
 878             font->stretch = GET_BE_WORD(tt_os2.usWidthClass);
 879
 880         font->weight = GET_BE_WORD(tt_os2.usWeightClass);
 881         TRACE("stretch=%d, weight=%d\n", font->stretch, font->weight);
 882
 883         font->metrics.ascent    = GET_BE_WORD(tt_os2.sTypoAscender);
 884         font->metrics.descent   = GET_BE_WORD(tt_os2.sTypoDescender);
 885         font->metrics.lineGap   = GET_BE_WORD(tt_os2.sTypoLineGap);
 886         font->metrics.capHeight = GET_BE_WORD(tt_os2.sCapHeight);
 887         font->metrics.xHeight   = GET_BE_WORD(tt_os2.sxHeight);
 888         font->metrics.strikethroughPosition  = GET_BE_WORD(tt_os2.yStrikeoutPosition);
 889         font->metrics.strikethroughThickness = GET_BE_WORD(tt_os2.yStrikeoutSize);
 890     }
 891
 892     memset(&tt_head, 0, sizeof(tt_head));
 893     if (GetFontData(hdc, MS_HEAD_TAG, 0, &tt_head, sizeof(tt_head)) != GDI_ERROR)
 894     {
 895         font->metrics.designUnitsPerEm = GET_BE_WORD(tt_head.unitsPerEm);
 896     }
 897
 898     memset(&tt_post, 0, sizeof(tt_post));
 899     if (GetFontData(hdc, MS_POST_TAG, 0, &tt_post, sizeof(tt_post)) != GDI_ERROR)
 900     {
 901         font->metrics.underlinePosition = GET_BE_WORD(tt_post.underlinePosition);
 902         font->metrics.underlineThickness = GET_BE_WORD(tt_post.underlineThickness);
 903     }
 904 }
 905
 906 HRESULT create_font_from_logfont(const LOGFONTW *logfont, IDWriteFont **font)
 907 {
 908     const WCHAR* facename, *familyname;
 909     struct dwrite_font *This;
 910     IDWriteFontFamily *family;
 911     OUTLINETEXTMETRICW *otm;
 912     HRESULT hr;
 913     HFONT hfont;
 914     HDC hdc;
 915     int ret;
 916
 917     *font = NULL;
 918
 919     This = heap_alloc(sizeof(struct dwrite_font));
 920     if (!This) return E_OUTOFMEMORY;
 921
 922     hfont = CreateFontIndirectW(logfont);
 923     if (!hfont)
 924     {
 925         heap_free(This);
 926         return DWRITE_E_NOFONT;
 927     }
 928
 929     hdc = CreateCompatibleDC(0);
 930     SelectObject(hdc, hfont);
 931
 932     ret = GetOutlineTextMetricsW(hdc, 0, NULL);
 933     otm = heap_alloc(ret);
 934     if (!otm)
 935     {
 936         heap_free(This);
 937         DeleteDC(hdc);
 938         DeleteObject(hfont);
 939         return E_OUTOFMEMORY;
 940     }
 941     otm->otmSize = ret;
 942     ret = GetOutlineTextMetricsW(hdc, otm->otmSize, otm);
 943
 944     get_font_properties(This, hdc);
 945
 946     DeleteDC(hdc);
 947     DeleteObject(hfont);
 948
 949     facename = (WCHAR*)((char*)otm + (ptrdiff_t)otm->otmpFaceName);
 950     familyname = (WCHAR*)((char*)otm + (ptrdiff_t)otm->otmpFamilyName);
 951     TRACE("facename=%s, familyname=%s\n", debugstr_w(facename), debugstr_w(familyname));
 952
 953     hr = create_fontfamily(familyname, &family);
 954     heap_free(otm);
 955     if (hr != S_OK)
 956     {
 957         heap_free(This);
 958         return hr;
 959     }
 960
 961     This->IDWriteFont_iface.lpVtbl = &dwritefontvtbl;
 962     This->ref = 1;
 963     This->face = NULL;
 964     This->family = family;
 965     This->style = logfont->lfItalic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
 966     This->facename = heap_strdupW(logfont->lfFaceName);
 967
 968     *font = &This->IDWriteFont_iface;
 969
 970     return S_OK;
 971 }