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.
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
7 #include "../../../include/fxge/fx_ge.h"
8 #include "../../../include/fxge/fx_freetype.h"
10 #define EM_ADJUST(em, a) (em == 0?(a): (a)*1000/em)
11 extern void _FPDFAPI_GetInternalFontData(int id1, FX_LPCBYTE& data, FX_DWORD& size);
19 m_pFontDataAllocation = NULL;
21 m_pOwnedStream = NULL;
23 m_pPlatformFont = NULL;
24 m_pPlatformFontCollection = NULL;
35 #ifdef FOXIT_CHROME_BUILD
36 if (m_pFontDataAllocation) {
37 FX_Free(m_pFontDataAllocation);
38 m_pFontDataAllocation = NULL;
42 #ifdef FOXIT_CHROME_BUILD
43 FXFT_Library library = FXFT_Get_Face_FreeType(m_Face);
44 if (FXFT_Get_Face_External_Stream(m_Face)) {
45 FXFT_Clear_Face_External_Stream(m_Face);
51 CFX_GEModule::Get()->GetFontMgr()->ReleaseFace(m_Face);
55 FX_Free(m_pOwnedStream);
56 m_pOwnedStream = NULL;
62 #if (_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ && (!defined(_FPDFAPI_MINI_)))
63 ReleasePlatformResource();
66 void CFX_Font::DeleteFace()
68 FXFT_Done_Face(m_Face);
71 FX_BOOL CFX_Font::LoadSubst(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags,
72 int weight, int italic_angle, int CharsetCP, FX_BOOL bVertical)
75 m_bVertical = bVertical;
76 m_pSubstFont = FX_NEW CFX_SubstFont;
80 m_Face = CFX_GEModule::Get()->GetFontMgr()->FindSubstFont(face_name, bTrueType, flags, weight, italic_angle,
81 CharsetCP, m_pSubstFont);
82 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
83 if(m_pSubstFont->m_ExtHandle) {
84 m_pPlatformFont = m_pSubstFont->m_ExtHandle;
85 m_pSubstFont->m_ExtHandle = NULL;
89 m_pFontData = FXFT_Get_Face_Stream_Base(m_Face);
90 m_dwSize = FXFT_Get_Face_Stream_Size(m_Face);
95 unsigned long _FTStreamRead(FXFT_Stream stream, unsigned long offset,
96 unsigned char* buffer, unsigned long count)
101 IFX_FileRead* pFile = (IFX_FileRead*)stream->descriptor.pointer;
102 int res = pFile->ReadBlock(buffer, offset, count);
108 void _FTStreamClose(FXFT_Stream stream)
112 FX_BOOL _LoadFile(FXFT_Library library, FXFT_Face* Face, IFX_FileRead* pFile, FXFT_Stream* stream)
114 FXFT_Stream stream1 = (FXFT_Stream)FX_Alloc(FX_BYTE, sizeof (FXFT_StreamRec));
118 stream1->base = NULL;
119 stream1->size = (unsigned long)pFile->GetSize();
121 stream1->descriptor.pointer = pFile;
122 stream1->close = _FTStreamClose;
123 stream1->read = _FTStreamRead;
125 args.flags = FT_OPEN_STREAM;
126 args.stream = stream1;
127 if (FXFT_Open_Face(library, &args, 0, Face)) {
136 FX_BOOL CFX_Font::LoadFile(IFX_FileRead* pFile)
139 FXFT_Library library;
140 if (CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary == NULL) {
141 FXFT_Init_FreeType(&CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary);
143 library = CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary;
144 FXFT_Stream stream = NULL;
145 if (!_LoadFile(library, &m_Face, pFile, &stream)) {
148 m_pOwnedStream = stream;
149 FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
152 int CFX_Font::GetGlyphWidth(FX_DWORD glyph_index)
157 if (m_pSubstFont && (m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM)) {
158 AdjustMMParams(glyph_index, 0, 0);
160 int err = FXFT_Load_Glyph(m_Face, glyph_index, FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH);
164 int width = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriAdvance(m_Face));
167 static FXFT_Face FT_LoadFont(FX_LPBYTE pData, int size)
169 FXFT_Library library;
170 if (CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary == NULL) {
171 FXFT_Init_FreeType(&CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary);
173 library = CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary;
175 int error = FXFT_New_Memory_Face(library, pData, size, 0, &face);
179 error = FXFT_Set_Pixel_Sizes(face, 64, 64);
185 FX_BOOL CFX_Font::LoadEmbedded(FX_LPCBYTE data, FX_DWORD size)
187 #ifdef FOXIT_CHROME_BUILD
188 m_pFontDataAllocation = FX_Alloc(FX_BYTE, size);
189 if (!m_pFontDataAllocation) {
192 FXSYS_memcpy32(m_pFontDataAllocation, data, size);
193 m_Face = FT_LoadFont((FX_LPBYTE)m_pFontDataAllocation, size);
194 m_pFontData = (FX_LPBYTE)m_pFontDataAllocation;
196 m_Face = FT_LoadFont((FX_LPBYTE)data, size);
197 m_pFontData = (FX_LPBYTE)data;
201 return m_Face != NULL;
203 FX_BOOL CFX_Font::IsTTFont()
205 if (m_Face == NULL) {
208 return FXFT_Is_Face_TT_OT(m_Face) == FXFT_FACE_FLAG_SFNT;
210 int CFX_Font::GetAscent() const
212 if (m_Face == NULL) {
215 int ascent = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Ascender(m_Face));
218 int CFX_Font::GetDescent() const
220 if (m_Face == NULL) {
223 int descent = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Descender(m_Face));
226 FX_BOOL CFX_Font::GetGlyphBBox(FX_DWORD glyph_index, FX_RECT &bbox)
228 if (m_Face == NULL) {
231 if (FXFT_Is_Face_Tricky(m_Face)) {
232 int error = FXFT_Set_Char_Size(m_Face, 0, 1000 * 64, 72, 72);
236 error = FXFT_Load_Glyph(m_Face, glyph_index, FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH);
242 error = FXFT_Get_Glyph(((FXFT_Face)m_Face)->glyph, &glyph);
246 FXFT_Glyph_Get_CBox(glyph, FXFT_GLYPH_BBOX_PIXELS, &cbox);
247 int pixel_size_x = ((FXFT_Face)m_Face)->size->metrics.x_ppem,
248 pixel_size_y = ((FXFT_Face)m_Face)->size->metrics.y_ppem;
249 if (pixel_size_x == 0 || pixel_size_y == 0) {
250 bbox.left = cbox.xMin;
251 bbox.right = cbox.xMax;
252 bbox.top = cbox.yMax;
253 bbox.bottom = cbox.yMin;
255 bbox.left = cbox.xMin * 1000 / pixel_size_x;
256 bbox.right = cbox.xMax * 1000 / pixel_size_x;
257 bbox.top = cbox.yMax * 1000 / pixel_size_y;
258 bbox.bottom = cbox.yMin * 1000 / pixel_size_y;
260 if (bbox.top > FXFT_Get_Face_Ascender(m_Face)) {
261 bbox.top = FXFT_Get_Face_Ascender(m_Face);
263 if (bbox.bottom < FXFT_Get_Face_Descender(m_Face)) {
264 bbox.bottom = FXFT_Get_Face_Descender(m_Face);
266 FT_Done_Glyph(glyph);
267 return FXFT_Set_Pixel_Sizes(m_Face, 0, 64) == 0;
269 if (FXFT_Load_Glyph(m_Face, glyph_index, FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) {
272 int em = FXFT_Get_Face_UnitsPerEM(m_Face);
274 bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face);
275 bbox.bottom = FXFT_Get_Glyph_HoriBearingY(m_Face);
276 bbox.top = bbox.bottom - FXFT_Get_Glyph_Height(m_Face);
277 bbox.right = bbox.left + FXFT_Get_Glyph_Width(m_Face);
279 bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face) * 1000 / em;
280 bbox.top = (FXFT_Get_Glyph_HoriBearingY(m_Face) - FXFT_Get_Glyph_Height(m_Face)) * 1000 / em;
281 bbox.right = (FXFT_Get_Glyph_HoriBearingX(m_Face) + FXFT_Get_Glyph_Width(m_Face)) * 1000 / em;
282 bbox.bottom = (FXFT_Get_Glyph_HoriBearingY(m_Face)) * 1000 / em;
286 FX_BOOL CFX_Font::IsItalic()
288 if (m_Face == NULL) {
291 FX_BOOL ret = FXFT_Is_Face_Italic(m_Face) == FXFT_STYLE_FLAG_ITALIC;
293 CFX_ByteString str(FXFT_Get_Face_Style_Name(m_Face));
295 if (str.Find("italic") != -1) {
301 FX_BOOL CFX_Font::IsBold()
303 if (m_Face == NULL) {
306 return FXFT_Is_Face_Bold(m_Face) == FXFT_STYLE_FLAG_BOLD;
308 FX_BOOL CFX_Font::IsFixedWidth()
310 if (m_Face == NULL) {
313 return FXFT_Is_Face_fixedwidth(m_Face);
315 CFX_WideString CFX_Font::GetPsName() const
317 if (m_Face == NULL) {
318 return CFX_WideString();
320 CFX_WideString psName = CFX_WideString::FromLocal(FXFT_Get_Postscript_Name(m_Face));
321 if (psName.IsEmpty()) {
322 psName = CFX_WideString::FromLocal("Untitled");
326 CFX_ByteString CFX_Font::GetFamilyName() const
328 if (m_Face == NULL && m_pSubstFont == NULL) {
329 return CFX_ByteString();
332 return CFX_ByteString(FXFT_Get_Face_Family_Name(m_Face));
334 return m_pSubstFont->m_Family;
337 CFX_ByteString CFX_Font::GetFaceName() const
339 if (m_Face == NULL && m_pSubstFont == NULL) {
340 return CFX_ByteString();
343 CFX_ByteString facename;
344 CFX_ByteString style = CFX_ByteString(FXFT_Get_Face_Style_Name(m_Face));
345 facename = GetFamilyName();
346 if (facename.IsEmpty()) {
347 facename = "Untitled";
349 if (!style.IsEmpty() && style != "Regular") {
350 facename += " " + style;
354 return m_pSubstFont->m_Family;
357 FX_BOOL CFX_Font::GetBBox(FX_RECT &bbox)
359 if (m_Face == NULL) {
362 int em = FXFT_Get_Face_UnitsPerEM(m_Face);
364 bbox.left = FXFT_Get_Face_xMin(m_Face);
365 bbox.bottom = FXFT_Get_Face_yMax(m_Face);
366 bbox.top = FXFT_Get_Face_yMin(m_Face);
367 bbox.right = FXFT_Get_Face_xMax(m_Face);
369 bbox.left = FXFT_Get_Face_xMin(m_Face) * 1000 / em;
370 bbox.top = FXFT_Get_Face_yMin(m_Face) * 1000 / em;
371 bbox.right = FXFT_Get_Face_xMax(m_Face) * 1000 / em;
372 bbox.bottom = FXFT_Get_Face_yMax(m_Face) * 1000 / em;
376 int CFX_Font::GetHeight()
378 if (m_Face == NULL) {
381 int height = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Height(m_Face));
384 int CFX_Font::GetMaxAdvanceWidth()
386 if (m_Face == NULL) {
389 int width = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_MaxAdvanceWidth(m_Face));
392 int CFX_Font::GetULPos()
394 if (m_Face == NULL) {
397 int pos = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_UnderLinePosition(m_Face));
400 int CFX_Font::GetULthickness()
402 if (m_Face == NULL) {
405 int thickness = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_UnderLineThickness(m_Face));
408 CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont)
412 FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCode(FX_DWORD charcode)
414 FXFT_Face face = m_pFont->GetFace();
418 if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0) {
419 return FXFT_Get_Char_Index(face, charcode);
421 if (m_pFont->m_pSubstFont && m_pFont->m_pSubstFont->m_Charset == 2) {
423 if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0) {
424 index = FXFT_Get_Char_Index(face, charcode);
426 if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN)) {
427 return FXFT_Get_Char_Index(face, charcode);
432 FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCodeEx(FX_DWORD charcode, int encoding)
434 FXFT_Face face = m_pFont->GetFace();
438 if (encoding == ENCODING_UNICODE) {
439 return GlyphFromCharCode(charcode);
441 int nmaps = FXFT_Get_Face_CharmapCount(m_pFont->m_Face);
444 int encoding = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i++]);
445 if (encoding != FXFT_ENCODING_UNICODE) {
446 FXFT_Select_Charmap(face, encoding);
451 return FXFT_Get_Char_Index(face, charcode);
453 IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont)
455 CFX_UnicodeEncoding* pEncoding = NULL;
456 pEncoding = FX_NEW CFX_UnicodeEncoding(pFont);