1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #include "core/include/fxge/fx_freetype.h"
8 #include "core/include/fxge/fx_ge.h"
9 #include "text_int.h"
10 
11 #define EM_ADJUST(em, a) (em == 0 ? (a) : (a)*1000 / em)
12 
13 #ifdef PDF_ENABLE_XFA
14 extern void _FPDFAPI_GetInternalFontData(int id1,
15                                          const uint8_t*& data,
16                                          FX_DWORD& size);
17 #endif  // PDF_ENABLE_XFA
18 
19 namespace {
20 
21 #ifdef PDF_ENABLE_XFA
22 const FX_DWORD g_EncodingID[] = {
23   FXFM_ENCODING_MS_SYMBOL,
24   FXFM_ENCODING_UNICODE,
25   FXFM_ENCODING_MS_SJIS,
26   FXFM_ENCODING_MS_GB2312,
27   FXFM_ENCODING_MS_BIG5,
28   FXFM_ENCODING_MS_WANSUNG,
29   FXFM_ENCODING_MS_JOHAB,
30   FXFM_ENCODING_ADOBE_STANDARD,
31   FXFM_ENCODING_ADOBE_EXPERT,
32   FXFM_ENCODING_ADOBE_CUSTOM,
33   FXFM_ENCODING_ADOBE_LATIN_1,
34   FXFM_ENCODING_OLD_LATIN_2,
35   FXFM_ENCODING_APPLE_ROMAN,
36 };
37 
_FXFM_CreateFontEncoding(CFX_Font * pFont,FX_DWORD nEncodingID)38 CFX_UnicodeEncodingEx* _FXFM_CreateFontEncoding(CFX_Font* pFont,
39                                                 FX_DWORD nEncodingID) {
40   if (FXFT_Select_Charmap(pFont->GetFace(), nEncodingID))
41     return nullptr;
42   return new CFX_UnicodeEncodingEx(pFont, nEncodingID);
43 }
44 #endif  // PDF_ENABLE_XFA
45 
FT_LoadFont(const uint8_t * pData,int size)46 FXFT_Face FT_LoadFont(const uint8_t* pData, int size) {
47   return CFX_GEModule::Get()->GetFontMgr()->GetFixedFace(pData, size, 0);
48 }
49 
50 }  // namespace
51 
CFX_Font()52 CFX_Font::CFX_Font() {
53   m_pSubstFont = NULL;
54   m_Face = NULL;
55   m_bEmbedded = FALSE;
56   m_bVertical = FALSE;
57   m_pFontData = NULL;
58   m_pFontDataAllocation = NULL;
59   m_dwSize = 0;
60   m_pGsubData = NULL;
61   m_pPlatformFont = NULL;
62   m_pPlatformFontCollection = NULL;
63   m_pDwFont = NULL;
64   m_hHandle = NULL;
65   m_bDwLoaded = FALSE;
66 #ifdef PDF_ENABLE_XFA
67   m_bLogic = FALSE;
68   m_pOwnedStream = NULL;
69 #endif  // PDF_ENABLE_XFA
70 }
71 
72 #ifdef PDF_ENABLE_XFA
LoadClone(const CFX_Font * pFont)73 FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont) {
74   if (pFont == NULL) {
75     return FALSE;
76   }
77   m_bLogic = TRUE;
78   if (pFont->m_pSubstFont) {
79     m_pSubstFont = new CFX_SubstFont;
80     m_pSubstFont->m_Charset = pFont->m_pSubstFont->m_Charset;
81     m_pSubstFont->m_ExtHandle = pFont->m_pSubstFont->m_ExtHandle;
82     m_pSubstFont->m_SubstFlags = pFont->m_pSubstFont->m_SubstFlags;
83     m_pSubstFont->m_Weight = pFont->m_pSubstFont->m_Weight;
84     m_pSubstFont->m_Family = pFont->m_pSubstFont->m_Family;
85     m_pSubstFont->m_ItalicAngle = pFont->m_pSubstFont->m_ItalicAngle;
86   }
87   if (pFont->m_OtfFontData.GetSize()) {
88     m_OtfFontData.AttachData(pFont->m_OtfFontData.GetBuffer(),
89                              pFont->m_OtfFontData.GetSize());
90   }
91   m_Face = pFont->m_Face;
92   m_bEmbedded = pFont->m_bEmbedded;
93   m_bVertical = pFont->m_bVertical;
94   m_dwSize = pFont->m_dwSize;
95   m_pFontData = pFont->m_pFontData;
96   m_pGsubData = pFont->m_pGsubData;
97   m_pPlatformFont = pFont->m_pPlatformFont;
98   m_pPlatformFontCollection = pFont->m_pPlatformFontCollection;
99   m_pDwFont = pFont->m_pDwFont;
100   m_hHandle = pFont->m_hHandle;
101   m_bDwLoaded = pFont->m_bDwLoaded;
102   m_pOwnedStream = pFont->m_pOwnedStream;
103   return TRUE;
104 }
105 #endif  // PDF_ENABLE_XFA
106 
~CFX_Font()107 CFX_Font::~CFX_Font() {
108   delete m_pSubstFont;
109   FX_Free(m_pFontDataAllocation);
110 #ifdef PDF_ENABLE_XFA
111   if (m_bLogic) {
112     m_OtfFontData.DetachBuffer();
113     return;
114   }
115 #endif  // PDF_ENABLE_XFA
116   if (m_Face) {
117 #ifndef PDF_ENABLE_XFA
118     if (FXFT_Get_Face_External_Stream(m_Face)) {
119       FXFT_Clear_Face_External_Stream(m_Face);
120     }
121 #endif  // PDF_ENABLE_XFA
122     if (m_bEmbedded) {
123       DeleteFace();
124     } else {
125       CFX_GEModule::Get()->GetFontMgr()->ReleaseFace(m_Face);
126     }
127   }
128 #ifdef PDF_ENABLE_XFA
129   FX_Free(m_pOwnedStream);
130 #endif  // PDF_ENABLE_XFA
131   FX_Free(m_pGsubData);
132 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
133   ReleasePlatformResource();
134 #endif
135 }
DeleteFace()136 void CFX_Font::DeleteFace() {
137   FXFT_Done_Face(m_Face);
138   m_Face = NULL;
139 }
LoadSubst(const CFX_ByteString & face_name,FX_BOOL bTrueType,FX_DWORD flags,int weight,int italic_angle,int CharsetCP,FX_BOOL bVertical)140 void CFX_Font::LoadSubst(const CFX_ByteString& face_name,
141                          FX_BOOL bTrueType,
142                          FX_DWORD flags,
143                          int weight,
144                          int italic_angle,
145                          int CharsetCP,
146                          FX_BOOL bVertical) {
147   m_bEmbedded = FALSE;
148   m_bVertical = bVertical;
149   m_pSubstFont = new CFX_SubstFont;
150   m_Face = CFX_GEModule::Get()->GetFontMgr()->FindSubstFont(
151       face_name, bTrueType, flags, weight, italic_angle, CharsetCP,
152       m_pSubstFont);
153 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
154   if (m_pSubstFont->m_ExtHandle) {
155     m_pPlatformFont = m_pSubstFont->m_ExtHandle;
156     m_pSubstFont->m_ExtHandle = NULL;
157   }
158 #endif
159   if (m_Face) {
160     m_pFontData = FXFT_Get_Face_Stream_Base(m_Face);
161     m_dwSize = FXFT_Get_Face_Stream_Size(m_Face);
162   }
163 }
164 #ifdef PDF_ENABLE_XFA
165 extern "C" {
_FTStreamRead(FXFT_Stream stream,unsigned long offset,unsigned char * buffer,unsigned long count)166 unsigned long _FTStreamRead(FXFT_Stream stream,
167                             unsigned long offset,
168                             unsigned char* buffer,
169                             unsigned long count) {
170   if (count == 0) {
171     return 0;
172   }
173   IFX_FileRead* pFile = (IFX_FileRead*)stream->descriptor.pointer;
174   int res = pFile->ReadBlock(buffer, offset, count);
175   if (res) {
176     return count;
177   }
178   return 0;
179 }
_FTStreamClose(FXFT_Stream stream)180 void _FTStreamClose(FXFT_Stream stream) {}
181 };
_LoadFile(FXFT_Library library,FXFT_Face * Face,IFX_FileRead * pFile,FXFT_Stream * stream,int32_t faceIndex=0)182 FX_BOOL _LoadFile(FXFT_Library library,
183                   FXFT_Face* Face,
184                   IFX_FileRead* pFile,
185                   FXFT_Stream* stream,
186                   int32_t faceIndex = 0) {
187   FXFT_Stream stream1 = (FXFT_Stream)FX_Alloc(uint8_t, sizeof(FXFT_StreamRec));
188   stream1->base = NULL;
189   stream1->size = (unsigned long)pFile->GetSize();
190   stream1->pos = 0;
191   stream1->descriptor.pointer = pFile;
192   stream1->close = _FTStreamClose;
193   stream1->read = _FTStreamRead;
194   FXFT_Open_Args args;
195   args.flags = FT_OPEN_STREAM;
196   args.stream = stream1;
197   if (FXFT_Open_Face(library, &args, faceIndex, Face)) {
198     FX_Free(stream1);
199     return FALSE;
200   }
201   if (stream) {
202     *stream = stream1;
203   }
204   return TRUE;
205 }
206 
LoadFile(IFX_FileRead * pFile,int nFaceIndex,int * pFaceCount)207 FX_BOOL CFX_Font::LoadFile(IFX_FileRead* pFile,
208                            int nFaceIndex,
209                            int* pFaceCount) {
210   m_bEmbedded = FALSE;
211 
212   CFX_FontMgr* pFontMgr = CFX_GEModule::Get()->GetFontMgr();
213   pFontMgr->InitFTLibrary();
214   FXFT_Library library = pFontMgr->GetFTLibrary();
215 
216   FXFT_Stream stream = nullptr;
217   if (!_LoadFile(library, &m_Face, pFile, &stream, nFaceIndex))
218     return FALSE;
219 
220   if (pFaceCount)
221     *pFaceCount = (int)m_Face->num_faces;
222   m_pOwnedStream = stream;
223   FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
224   return TRUE;
225 }
226 #endif  // PDF_ENABLE_XFA
227 
GetGlyphWidth(FX_DWORD glyph_index)228 int CFX_Font::GetGlyphWidth(FX_DWORD glyph_index) {
229   if (!m_Face) {
230     return 0;
231   }
232   if (m_pSubstFont && (m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM)) {
233     AdjustMMParams(glyph_index, 0, 0);
234   }
235   int err = FXFT_Load_Glyph(
236       m_Face, glyph_index,
237       FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH);
238   if (err) {
239     return 0;
240   }
241   int width = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
242                         FXFT_Get_Glyph_HoriAdvance(m_Face));
243   return width;
244 }
245 
LoadEmbedded(const uint8_t * data,FX_DWORD size)246 FX_BOOL CFX_Font::LoadEmbedded(const uint8_t* data, FX_DWORD size) {
247   m_pFontDataAllocation = FX_Alloc(uint8_t, size);
248   FXSYS_memcpy(m_pFontDataAllocation, data, size);
249   m_Face = FT_LoadFont(m_pFontDataAllocation, size);
250   m_pFontData = m_pFontDataAllocation;
251   m_bEmbedded = TRUE;
252   m_dwSize = size;
253   return m_Face != NULL;
254 }
255 
IsTTFont() const256 FX_BOOL CFX_Font::IsTTFont() const {
257   if (!m_Face)
258     return FALSE;
259   return FXFT_Is_Face_TT_OT(m_Face) == FXFT_FACE_FLAG_SFNT;
260 }
261 
GetAscent() const262 int CFX_Font::GetAscent() const {
263   if (!m_Face)
264     return 0;
265   return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
266                    FXFT_Get_Face_Ascender(m_Face));
267 }
268 
GetDescent() const269 int CFX_Font::GetDescent() const {
270   if (!m_Face)
271     return 0;
272   return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
273                    FXFT_Get_Face_Descender(m_Face));
274 }
275 
GetGlyphBBox(FX_DWORD glyph_index,FX_RECT & bbox)276 FX_BOOL CFX_Font::GetGlyphBBox(FX_DWORD glyph_index, FX_RECT& bbox) {
277   if (!m_Face)
278     return FALSE;
279 
280   if (FXFT_Is_Face_Tricky(m_Face)) {
281     int error = FXFT_Set_Char_Size(m_Face, 0, 1000 * 64, 72, 72);
282     if (error) {
283       return FALSE;
284     }
285     error = FXFT_Load_Glyph(m_Face, glyph_index,
286                             FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH);
287     if (error) {
288       return FALSE;
289     }
290     FXFT_BBox cbox;
291     FT_Glyph glyph;
292     error = FXFT_Get_Glyph(((FXFT_Face)m_Face)->glyph, &glyph);
293     if (error) {
294       return FALSE;
295     }
296     FXFT_Glyph_Get_CBox(glyph, FXFT_GLYPH_BBOX_PIXELS, &cbox);
297     int pixel_size_x = ((FXFT_Face)m_Face)->size->metrics.x_ppem,
298         pixel_size_y = ((FXFT_Face)m_Face)->size->metrics.y_ppem;
299     if (pixel_size_x == 0 || pixel_size_y == 0) {
300       bbox.left = cbox.xMin;
301       bbox.right = cbox.xMax;
302       bbox.top = cbox.yMax;
303       bbox.bottom = cbox.yMin;
304     } else {
305       bbox.left = cbox.xMin * 1000 / pixel_size_x;
306       bbox.right = cbox.xMax * 1000 / pixel_size_x;
307       bbox.top = cbox.yMax * 1000 / pixel_size_y;
308       bbox.bottom = cbox.yMin * 1000 / pixel_size_y;
309     }
310     if (bbox.top > FXFT_Get_Face_Ascender(m_Face)) {
311       bbox.top = FXFT_Get_Face_Ascender(m_Face);
312     }
313     if (bbox.bottom < FXFT_Get_Face_Descender(m_Face)) {
314       bbox.bottom = FXFT_Get_Face_Descender(m_Face);
315     }
316     FT_Done_Glyph(glyph);
317     return FXFT_Set_Pixel_Sizes(m_Face, 0, 64) == 0;
318   }
319   if (FXFT_Load_Glyph(
320           m_Face, glyph_index,
321           FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) {
322     return FALSE;
323   }
324   int em = FXFT_Get_Face_UnitsPerEM(m_Face);
325   if (em == 0) {
326     bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face);
327     bbox.bottom = FXFT_Get_Glyph_HoriBearingY(m_Face);
328     bbox.top = bbox.bottom - FXFT_Get_Glyph_Height(m_Face);
329     bbox.right = bbox.left + FXFT_Get_Glyph_Width(m_Face);
330   } else {
331     bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face) * 1000 / em;
332     bbox.top =
333         (FXFT_Get_Glyph_HoriBearingY(m_Face) - FXFT_Get_Glyph_Height(m_Face)) *
334         1000 / em;
335     bbox.right =
336         (FXFT_Get_Glyph_HoriBearingX(m_Face) + FXFT_Get_Glyph_Width(m_Face)) *
337         1000 / em;
338     bbox.bottom = (FXFT_Get_Glyph_HoriBearingY(m_Face)) * 1000 / em;
339   }
340   return TRUE;
341 }
342 
IsItalic() const343 FX_BOOL CFX_Font::IsItalic() const {
344   if (!m_Face)
345     return FALSE;
346 
347   FX_BOOL ret = FXFT_Is_Face_Italic(m_Face) == FXFT_STYLE_FLAG_ITALIC;
348   if (!ret) {
349     CFX_ByteString str(FXFT_Get_Face_Style_Name(m_Face));
350     str.MakeLower();
351     if (str.Find("italic") != -1) {
352       ret = TRUE;
353     }
354   }
355   return ret;
356 }
357 
IsBold() const358 FX_BOOL CFX_Font::IsBold() const {
359   if (!m_Face)
360     return FALSE;
361   return FXFT_Is_Face_Bold(m_Face) == FXFT_STYLE_FLAG_BOLD;
362 }
363 
IsFixedWidth() const364 FX_BOOL CFX_Font::IsFixedWidth() const {
365   if (!m_Face)
366     return FALSE;
367   return FXFT_Is_Face_fixedwidth(m_Face);
368 }
369 
GetPsName() const370 CFX_WideString CFX_Font::GetPsName() const {
371   if (!m_Face) {
372     return CFX_WideString();
373   }
374   CFX_WideString psName =
375       CFX_WideString::FromLocal(FXFT_Get_Postscript_Name(m_Face));
376   if (psName.IsEmpty()) {
377     psName = CFX_WideString::FromLocal("Untitled");
378   }
379   return psName;
380 }
GetFamilyName() const381 CFX_ByteString CFX_Font::GetFamilyName() const {
382   if (!m_Face && !m_pSubstFont) {
383     return CFX_ByteString();
384   }
385   if (m_Face) {
386     return CFX_ByteString(FXFT_Get_Face_Family_Name(m_Face));
387   }
388   return m_pSubstFont->m_Family;
389 }
GetFaceName() const390 CFX_ByteString CFX_Font::GetFaceName() const {
391   if (!m_Face && !m_pSubstFont) {
392     return CFX_ByteString();
393   }
394   if (m_Face) {
395     CFX_ByteString facename;
396     CFX_ByteString style = CFX_ByteString(FXFT_Get_Face_Style_Name(m_Face));
397     facename = GetFamilyName();
398     if (facename.IsEmpty()) {
399       facename = "Untitled";
400     }
401     if (!style.IsEmpty() && style != "Regular") {
402       facename += " " + style;
403     }
404     return facename;
405   }
406   return m_pSubstFont->m_Family;
407 }
GetBBox(FX_RECT & bbox)408 FX_BOOL CFX_Font::GetBBox(FX_RECT& bbox) {
409   if (!m_Face) {
410     return FALSE;
411   }
412   int em = FXFT_Get_Face_UnitsPerEM(m_Face);
413   if (em == 0) {
414     bbox.left = FXFT_Get_Face_xMin(m_Face);
415     bbox.bottom = FXFT_Get_Face_yMax(m_Face);
416     bbox.top = FXFT_Get_Face_yMin(m_Face);
417     bbox.right = FXFT_Get_Face_xMax(m_Face);
418   } else {
419     bbox.left = FXFT_Get_Face_xMin(m_Face) * 1000 / em;
420     bbox.top = FXFT_Get_Face_yMin(m_Face) * 1000 / em;
421     bbox.right = FXFT_Get_Face_xMax(m_Face) * 1000 / em;
422     bbox.bottom = FXFT_Get_Face_yMax(m_Face) * 1000 / em;
423   }
424   return TRUE;
425 }
426 
GetHeight() const427 int CFX_Font::GetHeight() const {
428   if (!m_Face)
429     return 0;
430 
431   return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
432                    FXFT_Get_Face_Height(m_Face));
433 }
434 
GetMaxAdvanceWidth() const435 int CFX_Font::GetMaxAdvanceWidth() const {
436   if (!m_Face)
437     return 0;
438 
439   return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
440                    FXFT_Get_Face_MaxAdvanceWidth(m_Face));
441 }
442 
GetULPos() const443 int CFX_Font::GetULPos() const {
444   if (!m_Face)
445     return 0;
446 
447   return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
448                    FXFT_Get_Face_UnderLinePosition(m_Face));
449 }
450 
GetULthickness() const451 int CFX_Font::GetULthickness() const {
452   if (!m_Face)
453     return 0;
454 
455   return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
456                    FXFT_Get_Face_UnderLineThickness(m_Face));
457 }
458 
CFX_UnicodeEncoding(CFX_Font * pFont)459 CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont) : m_pFont(pFont) {
460 }
461 
~CFX_UnicodeEncoding()462 CFX_UnicodeEncoding::~CFX_UnicodeEncoding() {
463 }
464 
GlyphFromCharCode(FX_DWORD charcode)465 FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCode(FX_DWORD charcode) {
466   FXFT_Face face = m_pFont->GetFace();
467   if (!face)
468     return charcode;
469 
470   if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0)
471     return FXFT_Get_Char_Index(face, charcode);
472 
473   if (m_pFont->GetSubstFont() && m_pFont->GetSubstFont()->m_Charset == 2) {
474     FX_DWORD index = 0;
475     if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0)
476       index = FXFT_Get_Char_Index(face, charcode);
477     if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN))
478       return FXFT_Get_Char_Index(face, charcode);
479   }
480   return charcode;
481 }
482 
483 #ifdef PDF_ENABLE_XFA
CFX_UnicodeEncodingEx(CFX_Font * pFont,FX_DWORD EncodingID)484 CFX_UnicodeEncodingEx::CFX_UnicodeEncodingEx(CFX_Font* pFont,
485                                              FX_DWORD EncodingID)
486     : CFX_UnicodeEncoding(pFont), m_nEncodingID(EncodingID) {
487 }
488 
~CFX_UnicodeEncodingEx()489 CFX_UnicodeEncodingEx::~CFX_UnicodeEncodingEx() {
490 }
491 
GlyphFromCharCode(FX_DWORD charcode)492 FX_DWORD CFX_UnicodeEncodingEx::GlyphFromCharCode(FX_DWORD charcode) {
493   FXFT_Face face = m_pFont->GetFace();
494   FT_UInt nIndex = FXFT_Get_Char_Index(face, charcode);
495   if (nIndex > 0) {
496     return nIndex;
497   }
498   int nmaps = FXFT_Get_Face_CharmapCount(face);
499   int m = 0;
500   while (m < nmaps) {
501     int nEncodingID =
502         FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[m++]);
503     if (m_nEncodingID == nEncodingID) {
504       continue;
505     }
506     int error = FXFT_Select_Charmap(face, nEncodingID);
507     if (error) {
508       continue;
509     }
510     nIndex = FXFT_Get_Char_Index(face, charcode);
511     if (nIndex > 0) {
512       m_nEncodingID = nEncodingID;
513       return nIndex;
514     }
515   }
516   FXFT_Select_Charmap(face, m_nEncodingID);
517   return 0;
518 }
519 
CharCodeFromUnicode(FX_WCHAR Unicode) const520 FX_DWORD CFX_UnicodeEncodingEx::CharCodeFromUnicode(FX_WCHAR Unicode) const {
521   if (m_nEncodingID == FXFM_ENCODING_UNICODE ||
522       m_nEncodingID == FXFM_ENCODING_MS_SYMBOL) {
523     return Unicode;
524   }
525   FXFT_Face face = m_pFont->GetFace();
526   int nmaps = FXFT_Get_Face_CharmapCount(face);
527   for (int i = 0; i < nmaps; i++) {
528     int nEncodingID =
529         FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i]);
530     if (nEncodingID == FXFM_ENCODING_UNICODE ||
531         nEncodingID == FXFM_ENCODING_MS_SYMBOL) {
532       return Unicode;
533     }
534   }
535   return -1;
536 }
537 
FX_CreateFontEncodingEx(CFX_Font * pFont,FX_DWORD nEncodingID)538 CFX_UnicodeEncodingEx* FX_CreateFontEncodingEx(CFX_Font* pFont,
539                                                FX_DWORD nEncodingID) {
540   if (!pFont || !pFont->GetFace())
541     return nullptr;
542 
543   if (nEncodingID != FXFM_ENCODING_NONE)
544     return _FXFM_CreateFontEncoding(pFont, nEncodingID);
545 
546   for (size_t i = 0; i < FX_ArraySize(g_EncodingID); ++i) {
547     CFX_UnicodeEncodingEx* pFontEncoding =
548         _FXFM_CreateFontEncoding(pFont, g_EncodingID[i]);
549     if (pFontEncoding) {
550       return pFontEncoding;
551     }
552   }
553   return NULL;
554 }
555 #endif  // PDF_ENABLE_XFA
556