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 struct dwrite_fontfamily {
  31     IDWriteFontFamily IDWriteFontFamily_iface;
  32     LONG ref;
  33
  34     WCHAR *familyname;
  35 };
  36
  37 struct dwrite_font {
  38     IDWriteFont IDWriteFont_iface;
  39     LONG ref;
  40
  41     IDWriteFontFamily *family;
  42     IDWriteFontFace *face;
  43     DWRITE_FONT_STYLE style;
  44 };
  45
  46 struct dwrite_fontface {
  47     IDWriteFontFace IDWriteFontFace_iface;
  48     LONG ref;
  49 };
  50
  51 static inline struct dwrite_fontface *impl_from_IDWriteFontFace(IDWriteFontFace *iface)
  52 {
  53     return CONTAINING_RECORD(iface, struct dwrite_fontface, IDWriteFontFace_iface);
  54 }
  55
  56 static inline struct dwrite_font *impl_from_IDWriteFont(IDWriteFont *iface)
  57 {
  58     return CONTAINING_RECORD(iface, struct dwrite_font, IDWriteFont_iface);
  59 }
  60
  61 static inline struct dwrite_fontfamily *impl_from_IDWriteFontFamily(IDWriteFontFamily *iface)
  62 {
  63     return CONTAINING_RECORD(iface, struct dwrite_fontfamily, IDWriteFontFamily_iface);
  64 }
  65
  66 static HRESULT WINAPI dwritefontface_QueryInterface(IDWriteFontFace *iface, REFIID riid, void **obj)
  67 {
  68     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
  69
  70     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
  71
  72     if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDWriteFontFace))
  73     {
  74         *obj = iface;
  75         IDWriteFontFace_AddRef(iface);
  76         return S_OK;
  77     }
  78
  79     *obj = NULL;
  80     return E_NOINTERFACE;
  81 }
  82
  83 static ULONG WINAPI dwritefontface_AddRef(IDWriteFontFace *iface)
  84 {
  85     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
  86     ULONG ref = InterlockedIncrement(&This->ref);
  87     TRACE("(%p)->(%d)\n", This, ref);
  88     return ref;
  89 }
  90
  91 static ULONG WINAPI dwritefontface_Release(IDWriteFontFace *iface)
  92 {
  93     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
  94     ULONG ref = InterlockedDecrement(&This->ref);
  95
  96     TRACE("(%p)->(%d)\n", This, ref);
  97
  98     if (!ref)
  99         heap_free(This);
 100
 101     return S_OK;
 102 }
 103
 104 static DWRITE_FONT_FACE_TYPE WINAPI dwritefontface_GetType(IDWriteFontFace *iface)
 105 {
 106     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 107     FIXME("(%p): stub\n", This);
 108     return DWRITE_FONT_FACE_TYPE_UNKNOWN;
 109 }
 110
 111 static HRESULT WINAPI dwritefontface_GetFiles(IDWriteFontFace *iface, UINT32 *number_of_files,
 112     IDWriteFontFile **fontfiles)
 113 {
 114     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 115     FIXME("(%p)->(%p %p): stub\n", This, number_of_files, fontfiles);
 116     return E_NOTIMPL;
 117 }
 118
 119 static UINT32 WINAPI dwritefontface_GetIndex(IDWriteFontFace *iface)
 120 {
 121     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 122     FIXME("(%p): stub\n", This);
 123     return 0;
 124 }
 125
 126 static DWRITE_FONT_SIMULATIONS WINAPI dwritefontface_GetSimulations(IDWriteFontFace *iface)
 127 {
 128     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 129     FIXME("(%p): stub\n", This);
 130     return DWRITE_FONT_SIMULATIONS_NONE;
 131 }
 132
 133 static BOOL WINAPI dwritefontface_IsSymbolFont(IDWriteFontFace *iface)
 134 {
 135     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 136     FIXME("(%p): stub\n", This);
 137     return FALSE;
 138 }
 139
 140 static void WINAPI dwritefontface_GetMetrics(IDWriteFontFace *iface, DWRITE_FONT_METRICS *metrics)
 141 {
 142     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 143     FIXME("(%p)->(%p): stub\n", This, metrics);
 144 }
 145
 146 static UINT16 WINAPI dwritefontface_GetGlyphCount(IDWriteFontFace *iface)
 147 {
 148     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 149     FIXME("(%p): stub\n", This);
 150     return 0;
 151 }
 152
 153 static HRESULT WINAPI dwritefontface_GetDesignGlyphMetrics(IDWriteFontFace *iface,
 154     UINT16 const *glyph_indices, UINT32 glyph_count, DWRITE_GLYPH_METRICS *metrics, BOOL is_sideways)
 155 {
 156     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 157     FIXME("(%p)->(%p %u %p %d): stub\n", This, glyph_indices, glyph_count, metrics, is_sideways);
 158     return E_NOTIMPL;
 159 }
 160
 161 static HRESULT WINAPI dwritefontface_GetGlyphIndices(IDWriteFontFace *iface, UINT32 const *codepoints,
 162     UINT32 count, UINT16 *glyph_indices)
 163 {
 164     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 165     FIXME("(%p)->(%p %u %p): stub\n", This, codepoints, count, glyph_indices);
 166     return E_NOTIMPL;
 167 }
 168
 169 static HRESULT WINAPI dwritefontface_TryGetFontTable(IDWriteFontFace *iface, UINT32 table_tag,
 170     const void **table_data, UINT32 *table_size, void **context, BOOL *exists)
 171 {
 172     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 173     FIXME("(%p)->(%u %p %p %p %p): stub\n", This, table_tag, table_data, table_size, context, exists);
 174     return E_NOTIMPL;
 175 }
 176
 177 static void WINAPI dwritefontface_ReleaseFontTable(IDWriteFontFace *iface, void *table_context)
 178 {
 179     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 180     FIXME("(%p)->(%p): stub\n", This, table_context);
 181 }
 182
 183 static HRESULT WINAPI dwritefontface_GetGlyphRunOutline(IDWriteFontFace *iface, FLOAT emSize,
 184     UINT16 const *glyph_indices, FLOAT const* glyph_advances, DWRITE_GLYPH_OFFSET const *glyph_offsets,
 185     UINT32 glyph_count, BOOL is_sideways, BOOL is_rtl, IDWriteGeometrySink *geometrysink)
 186 {
 187     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 188     FIXME("(%p)->(%f %p %p %p %u %d %d %p): stub\n", This, emSize, glyph_indices, glyph_advances, glyph_offsets,
 189         glyph_count, is_sideways, is_rtl, geometrysink);
 190     return E_NOTIMPL;
 191 }
 192
 193 static HRESULT WINAPI dwritefontface_GetRecommendedRenderingMode(IDWriteFontFace *iface, FLOAT emSize,
 194     FLOAT pixels_per_dip, DWRITE_MEASURING_MODE mode, IDWriteRenderingParams* params, DWRITE_RENDERING_MODE* rendering_mode)
 195 {
 196     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 197     FIXME("(%p)->(%f %f %d %p %p): stub\n", This, emSize, pixels_per_dip, mode, params, rendering_mode);
 198     return E_NOTIMPL;
 199 }
 200
 201 static HRESULT WINAPI dwritefontface_GetGdiCompatibleMetrics(IDWriteFontFace *iface, FLOAT emSize, FLOAT pixels_per_dip,
 202     DWRITE_MATRIX const *transform, DWRITE_FONT_METRICS *metrics)
 203 {
 204     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 205     FIXME("(%p)->(%f %f %p %p): stub\n", This, emSize, pixels_per_dip, transform, metrics);
 206     return E_NOTIMPL;
 207 }
 208
 209 static HRESULT WINAPI dwritefontface_GetGdiCompatibleGlyphMetrics(IDWriteFontFace *iface, FLOAT emSize, FLOAT pixels_per_dip,
 210     DWRITE_MATRIX const *transform, BOOL use_gdi_natural, UINT16 const *glyph_indices, UINT32 glyph_count,
 211     DWRITE_GLYPH_METRICS *metrics, BOOL is_sideways)
 212 {
 213     struct dwrite_fontface *This = impl_from_IDWriteFontFace(iface);
 214     FIXME("(%p)->(%f %f %p %d %p %u %p %d): stub\n", This, emSize, pixels_per_dip, transform, use_gdi_natural, glyph_indices,
 215         glyph_count, metrics, is_sideways);
 216     return E_NOTIMPL;
 217 }
 218
 219 static const IDWriteFontFaceVtbl dwritefontfacevtbl = {
 220     dwritefontface_QueryInterface,
 221     dwritefontface_AddRef,
 222     dwritefontface_Release,
 223     dwritefontface_GetType,
 224     dwritefontface_GetFiles,
 225     dwritefontface_GetIndex,
 226     dwritefontface_GetSimulations,
 227     dwritefontface_IsSymbolFont,
 228     dwritefontface_GetMetrics,
 229     dwritefontface_GetGlyphCount,
 230     dwritefontface_GetDesignGlyphMetrics,
 231     dwritefontface_GetGlyphIndices,
 232     dwritefontface_TryGetFontTable,
 233     dwritefontface_ReleaseFontTable,
 234     dwritefontface_GetGlyphRunOutline,
 235     dwritefontface_GetRecommendedRenderingMode,
 236     dwritefontface_GetGdiCompatibleMetrics,
 237     dwritefontface_GetGdiCompatibleGlyphMetrics
 238 };
 239
 240 static HRESULT create_fontface(IDWriteFontFace **face)
 241 {
 242     struct dwrite_fontface *This;
 243
 244     *face = NULL;
 245
 246     This = heap_alloc(sizeof(struct dwrite_fontface));
 247     if (!This) return E_OUTOFMEMORY;
 248
 249     This->IDWriteFontFace_iface.lpVtbl = &dwritefontfacevtbl;
 250     This->ref = 1;
 251     *face = &This->IDWriteFontFace_iface;
 252
 253     return S_OK;
 254 }
 255
 256 static HRESULT WINAPI dwritefont_QueryInterface(IDWriteFont *iface, REFIID riid, void **obj)
 257 {
 258     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 259
 260     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 261
 262     if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDWriteFont))
 263     {
 264         *obj = iface;
 265         IDWriteFont_AddRef(iface);
 266         return S_OK;
 267     }
 268
 269     *obj = NULL;
 270     return E_NOINTERFACE;
 271 }
 272
 273 static ULONG WINAPI dwritefont_AddRef(IDWriteFont *iface)
 274 {
 275     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 276     ULONG ref = InterlockedIncrement(&This->ref);
 277     TRACE("(%p)->(%d)\n", This, ref);
 278     return ref;
 279 }
 280
 281 static ULONG WINAPI dwritefont_Release(IDWriteFont *iface)
 282 {
 283     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 284     ULONG ref = InterlockedDecrement(&This->ref);
 285
 286     TRACE("(%p)->(%d)\n", This, ref);
 287
 288     if (!ref)
 289     {
 290         IDWriteFontFamily_Release(This->family);
 291         heap_free(This);
 292     }
 293
 294     return S_OK;
 295 }
 296
 297 static HRESULT WINAPI dwritefont_GetFontFamily(IDWriteFont *iface, IDWriteFontFamily **family)
 298 {
 299     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 300     TRACE("(%p)->(%p)\n", This, family);
 301
 302     *family = This->family;
 303     IDWriteFontFamily_AddRef(*family);
 304     return S_OK;
 305 }
 306
 307 static DWRITE_FONT_WEIGHT WINAPI dwritefont_GetWeight(IDWriteFont *iface)
 308 {
 309     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 310     FIXME("(%p): stub\n", This);
 311     return 0;
 312 }
 313
 314 static DWRITE_FONT_STRETCH WINAPI dwritefont_GetStretch(IDWriteFont *iface)
 315 {
 316     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 317     FIXME("(%p): stub\n", This);
 318     return DWRITE_FONT_STRETCH_UNDEFINED;
 319 }
 320
 321 static DWRITE_FONT_STYLE WINAPI dwritefont_GetStyle(IDWriteFont *iface)
 322 {
 323     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 324     TRACE("(%p)\n", This);
 325     return This->style;
 326 }
 327
 328 static BOOL WINAPI dwritefont_IsSymbolFont(IDWriteFont *iface)
 329 {
 330     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 331     FIXME("(%p): stub\n", This);
 332     return FALSE;
 333 }
 334
 335 static HRESULT WINAPI dwritefont_GetFaceNames(IDWriteFont *iface, IDWriteLocalizedStrings **names)
 336 {
 337     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 338     FIXME("(%p)->(%p): stub\n", This, names);
 339     return E_NOTIMPL;
 340 }
 341
 342 static HRESULT WINAPI dwritefont_GetInformationalStrings(IDWriteFont *iface,
 343     DWRITE_INFORMATIONAL_STRING_ID stringid, IDWriteLocalizedStrings **strings, BOOL *exists)
 344 {
 345     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 346     FIXME("(%p)->(%d %p %p): stub\n", This, stringid, strings, exists);
 347     return E_NOTIMPL;
 348 }
 349
 350 static DWRITE_FONT_SIMULATIONS WINAPI dwritefont_GetSimulations(IDWriteFont *iface)
 351 {
 352     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 353     FIXME("(%p): stub\n", This);
 354     return DWRITE_FONT_SIMULATIONS_NONE;
 355 }
 356
 357 static void WINAPI dwritefont_GetMetrics(IDWriteFont *iface, DWRITE_FONT_METRICS *metrics)
 358 {
 359     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 360     FIXME("(%p)->(%p): stub\n", This, metrics);
 361 }
 362
 363 static HRESULT WINAPI dwritefont_HasCharacter(IDWriteFont *iface, UINT32 value, BOOL *exists)
 364 {
 365     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 366     FIXME("(%p)->(0x%08x %p): stub\n", This, value, exists);
 367     return E_NOTIMPL;
 368 }
 369
 370 static HRESULT WINAPI dwritefont_CreateFontFace(IDWriteFont *iface, IDWriteFontFace **face)
 371 {
 372     struct dwrite_font *This = impl_from_IDWriteFont(iface);
 373
 374     TRACE("(%p)->(%p)\n", This, face);
 375
 376     if (!This->face)
 377     {
 378         HRESULT hr = create_fontface(&This->face);
 379         if (FAILED(hr)) return hr;
 380         *face = This->face;
 381         return hr;
 382     }
 383
 384     *face = This->face;
 385     IDWriteFontFace_AddRef(*face);
 386
 387     return S_OK;
 388 }
 389
 390 static const IDWriteFontVtbl dwritefontvtbl = {
 391     dwritefont_QueryInterface,
 392     dwritefont_AddRef,
 393     dwritefont_Release,
 394     dwritefont_GetFontFamily,
 395     dwritefont_GetWeight,
 396     dwritefont_GetStretch,
 397     dwritefont_GetStyle,
 398     dwritefont_IsSymbolFont,
 399     dwritefont_GetFaceNames,
 400     dwritefont_GetInformationalStrings,
 401     dwritefont_GetSimulations,
 402     dwritefont_GetMetrics,
 403     dwritefont_HasCharacter,
 404     dwritefont_CreateFontFace
 405 };
 406
 407
 408 static HRESULT WINAPI dwritefontfamily_QueryInterface(IDWriteFontFamily *iface, REFIID riid, void **obj)
 409 {
 410     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 411     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 412
 413     if (IsEqualIID(riid, &IID_IUnknown) ||
 414         IsEqualIID(riid, &IID_IDWriteFontList) ||
 415         IsEqualIID(riid, &IID_IDWriteFontFamily))
 416     {
 417         *obj = iface;
 418         IDWriteFontFamily_AddRef(iface);
 419         return S_OK;
 420     }
 421
 422     *obj = NULL;
 423     return E_NOINTERFACE;
 424 }
 425
 426 static ULONG WINAPI dwritefontfamily_AddRef(IDWriteFontFamily *iface)
 427 {
 428     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 429     ULONG ref = InterlockedIncrement(&This->ref);
 430     TRACE("(%p)->(%d)\n", This, ref);
 431     return ref;
 432 }
 433
 434 static ULONG WINAPI dwritefontfamily_Release(IDWriteFontFamily *iface)
 435 {
 436     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 437     ULONG ref = InterlockedDecrement(&This->ref);
 438
 439     TRACE("(%p)->(%d)\n", This, ref);
 440
 441     if (!ref)
 442     {
 443         heap_free(This->familyname);
 444         heap_free(This);
 445     }
 446
 447     return S_OK;
 448 }
 449
 450 static HRESULT WINAPI dwritefontfamily_GetFontCollection(IDWriteFontFamily *iface, IDWriteFontCollection **collection)
 451 {
 452     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 453     FIXME("(%p)->(%p): stub\n", This, collection);
 454     return E_NOTIMPL;
 455 }
 456
 457 static UINT32 WINAPI dwritefontfamily_GetFontCount(IDWriteFontFamily *iface)
 458 {
 459     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 460     FIXME("(%p): stub\n", This);
 461     return 0;
 462 }
 463
 464 static HRESULT WINAPI dwritefontfamily_GetFont(IDWriteFontFamily *iface, UINT32 index, IDWriteFont **font)
 465 {
 466     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 467     FIXME("(%p)->(%u %p): stub\n", This, index, font);
 468     return E_NOTIMPL;
 469 }
 470
 471 static HRESULT WINAPI dwritefontfamily_GetFamilyNames(IDWriteFontFamily *iface, IDWriteLocalizedStrings **names)
 472 {
 473     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 474     static const WCHAR enusW[] = {'e','n','-','u','s',0};
 475     HRESULT hr;
 476
 477     TRACE("(%p)->(%p)\n", This, names);
 478
 479     hr = create_localizedstrings(names);
 480     if (FAILED(hr)) return hr;
 481
 482     return add_localizedstring(*names, enusW, This->familyname);
 483 }
 484
 485 static HRESULT WINAPI dwritefontfamily_GetFirstMatchingFont(IDWriteFontFamily *iface, DWRITE_FONT_WEIGHT weight,
 486     DWRITE_FONT_STRETCH stretch, DWRITE_FONT_STYLE style, IDWriteFont **font)
 487 {
 488     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 489     FIXME("(%p)->(%d %d %d %p): stub\n", This, weight, stretch, style, font);
 490     return E_NOTIMPL;
 491 }
 492
 493 static HRESULT WINAPI dwritefontfamily_GetMatchingFonts(IDWriteFontFamily *iface, DWRITE_FONT_WEIGHT weight,
 494     DWRITE_FONT_STRETCH stretch, DWRITE_FONT_STYLE style, IDWriteFontList **fonts)
 495 {
 496     struct dwrite_fontfamily *This = impl_from_IDWriteFontFamily(iface);
 497     FIXME("(%p)->(%d %d %d %p): stub\n", This, weight, stretch, style, fonts);
 498     return E_NOTIMPL;
 499 }
 500
 501 static const IDWriteFontFamilyVtbl fontfamilyvtbl = {
 502     dwritefontfamily_QueryInterface,
 503     dwritefontfamily_AddRef,
 504     dwritefontfamily_Release,
 505     dwritefontfamily_GetFontCollection,
 506     dwritefontfamily_GetFontCount,
 507     dwritefontfamily_GetFont,
 508     dwritefontfamily_GetFamilyNames,
 509     dwritefontfamily_GetFirstMatchingFont,
 510     dwritefontfamily_GetMatchingFonts
 511 };
 512
 513 static HRESULT create_fontfamily(const WCHAR *familyname, IDWriteFontFamily **family)
 514 {
 515     struct dwrite_fontfamily *This;
 516
 517     *family = NULL;
 518
 519     This = heap_alloc(sizeof(struct dwrite_fontfamily));
 520     if (!This) return E_OUTOFMEMORY;
 521
 522     This->IDWriteFontFamily_iface.lpVtbl = &fontfamilyvtbl;
 523     This->ref = 1;
 524     This->familyname = heap_strdupW(familyname);
 525
 526     *family = &This->IDWriteFontFamily_iface;
 527
 528     return S_OK;
 529 }
 530
 531 HRESULT create_font_from_logfont(const LOGFONTW *logfont, IDWriteFont **font)
 532 {
 533     const WCHAR* facename, *familyname;
 534     struct dwrite_font *This;
 535     IDWriteFontFamily *family;
 536     OUTLINETEXTMETRICW *otm;
 537     HRESULT hr;
 538     HFONT hfont;
 539     HDC hdc;
 540     int ret;
 541
 542     *font = NULL;
 543
 544     hfont = CreateFontIndirectW(logfont);
 545     if (!hfont) return DWRITE_E_NOFONT;
 546
 547     hdc = CreateCompatibleDC(0);
 548     SelectObject(hdc, hfont);
 549
 550     ret = GetOutlineTextMetricsW(hdc, 0, NULL);
 551     otm = heap_alloc(ret);
 552     otm->otmSize = ret;
 553     ret = GetOutlineTextMetricsW(hdc, otm->otmSize, otm);
 554
 555     DeleteDC(hdc);
 556     DeleteObject(hfont);
 557
 558     facename = (WCHAR*)((char*)otm + (ptrdiff_t)otm->otmpFaceName);
 559     familyname = (WCHAR*)((char*)otm + (ptrdiff_t)otm->otmpFamilyName);
 560     TRACE("facename=%s, familyname=%s\n", debugstr_w(facename), debugstr_w(familyname));
 561
 562     hr = create_fontfamily(familyname, &family);
 563     heap_free(otm);
 564     if (hr != S_OK) return hr;
 565
 566     This = heap_alloc(sizeof(struct dwrite_font));
 567     if (!This)
 568     {
 569         IDWriteFontFamily_Release(family);
 570         return E_OUTOFMEMORY;
 571     }
 572
 573     This->IDWriteFont_iface.lpVtbl = &dwritefontvtbl;
 574     This->ref = 1;
 575     This->face = NULL;
 576     This->family = family;
 577     This->style = logfont->lfItalic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
 578
 579     *font = &This->IDWriteFont_iface;
 580
 581     return S_OK;
 582 }