| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "../../../include/fxge/fx_ge.h" |
| #include "../../../include/fxge/fx_freetype.h" |
| #include "text_int.h" |
| #define EM_ADJUST(em, a) (em == 0?(a): (a)*1000/em) |
| extern void _FPDFAPI_GetInternalFontData(int id1, const uint8_t*& data, FX_DWORD& size); |
| CFX_Font::CFX_Font() |
| { |
| m_pSubstFont = NULL; |
| m_Face = NULL; |
| m_bEmbedded = FALSE; |
| m_bVertical = FALSE; |
| m_pFontData = NULL; |
| m_pFontDataAllocation = NULL; |
| m_dwSize = 0; |
| m_pOwnedStream = NULL; |
| m_pGsubData = NULL; |
| m_pPlatformFont = NULL; |
| m_pPlatformFontCollection = NULL; |
| m_pDwFont = NULL; |
| m_hHandle = NULL; |
| m_bDwLoaded = FALSE; |
| m_bLogic = FALSE; |
| } |
| FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont) |
| { |
| if (pFont == NULL) { |
| return FALSE; |
| } |
| m_bLogic = TRUE; |
| if (pFont->m_pSubstFont) { |
| m_pSubstFont = FX_NEW CFX_SubstFont; |
| if (!m_pSubstFont) { |
| return FALSE; |
| } |
| m_pSubstFont->m_Charset = pFont->m_pSubstFont->m_Charset; |
| m_pSubstFont->m_ExtHandle = pFont->m_pSubstFont->m_ExtHandle; |
| m_pSubstFont->m_SubstFlags = pFont->m_pSubstFont->m_SubstFlags; |
| m_pSubstFont->m_Weight = pFont->m_pSubstFont->m_Weight; |
| m_pSubstFont->m_Family = pFont->m_pSubstFont->m_Family; |
| m_pSubstFont->m_ItalicAngle = pFont->m_pSubstFont->m_ItalicAngle; |
| } |
| if (pFont->m_OtfFontData.GetSize()) { |
| m_OtfFontData.AttachData(pFont->m_OtfFontData.GetBuffer(), pFont->m_OtfFontData.GetSize()); |
| } |
| m_Face = pFont->m_Face; |
| m_bEmbedded = pFont->m_bEmbedded; |
| m_bVertical = pFont->m_bVertical; |
| m_dwSize = pFont->m_dwSize; |
| m_pFontData = pFont->m_pFontData; |
| m_pGsubData = pFont->m_pGsubData; |
| m_pPlatformFont = pFont->m_pPlatformFont; |
| m_pPlatformFontCollection = pFont->m_pPlatformFontCollection; |
| m_pDwFont = pFont->m_pDwFont; |
| m_hHandle = pFont->m_hHandle; |
| m_bDwLoaded = pFont->m_bDwLoaded; |
| m_pOwnedStream = pFont->m_pOwnedStream; |
| return TRUE; |
| } |
| CFX_Font::~CFX_Font() |
| { |
| if (m_pSubstFont) { |
| delete m_pSubstFont; |
| m_pSubstFont = NULL; |
| } |
| if (m_bLogic) { |
| m_OtfFontData.DetachBuffer(); |
| return; |
| } |
| if (m_Face) { |
| if(m_bEmbedded) { |
| DeleteFace(); |
| } else { |
| CFX_GEModule::Get()->GetFontMgr()->ReleaseFace(m_Face); |
| } |
| } |
| if (m_pOwnedStream) { |
| FX_Free(m_pOwnedStream); |
| m_pOwnedStream = NULL; |
| } |
| if (m_pGsubData) { |
| FX_Free(m_pGsubData); |
| m_pGsubData = NULL; |
| } |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| ReleasePlatformResource(); |
| #endif |
| } |
| void CFX_Font::DeleteFace() |
| { |
| FXFT_Done_Face(m_Face); |
| m_Face = NULL; |
| } |
| FX_BOOL CFX_Font::LoadSubst(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, |
| int weight, int italic_angle, int CharsetCP, FX_BOOL bVertical) |
| { |
| m_bEmbedded = FALSE; |
| m_bVertical = bVertical; |
| m_pSubstFont = FX_NEW CFX_SubstFont; |
| if (!m_pSubstFont) { |
| return FALSE; |
| } |
| m_Face = CFX_GEModule::Get()->GetFontMgr()->FindSubstFont(face_name, bTrueType, flags, weight, italic_angle, |
| CharsetCP, m_pSubstFont); |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| if(m_pSubstFont->m_ExtHandle) { |
| m_pPlatformFont = m_pSubstFont->m_ExtHandle; |
| m_pSubstFont->m_ExtHandle = NULL; |
| } |
| #endif |
| if (m_Face) { |
| m_pFontData = FXFT_Get_Face_Stream_Base(m_Face); |
| m_dwSize = FXFT_Get_Face_Stream_Size(m_Face); |
| } |
| return TRUE; |
| } |
| extern "C" { |
| unsigned long _FTStreamRead(FXFT_Stream stream, unsigned long offset, |
| unsigned char* buffer, unsigned long count) |
| { |
| if (count == 0) { |
| return 0; |
| } |
| IFX_FileRead* pFile = (IFX_FileRead*)stream->descriptor.pointer; |
| int res = pFile->ReadBlock(buffer, offset, count); |
| if (res) { |
| return count; |
| } |
| return 0; |
| } |
| void _FTStreamClose(FXFT_Stream stream) |
| { |
| } |
| }; |
| FX_BOOL _LoadFile(FXFT_Library library, FXFT_Face* Face, IFX_FileRead* pFile, FXFT_Stream* stream, int32_t faceIndex = 0) |
| { |
| FXFT_Stream stream1 = (FXFT_Stream)FX_Alloc(uint8_t, sizeof (FXFT_StreamRec)); |
| stream1->base = NULL; |
| stream1->size = (unsigned long)pFile->GetSize(); |
| stream1->pos = 0; |
| stream1->descriptor.pointer = pFile; |
| stream1->close = _FTStreamClose; |
| stream1->read = _FTStreamRead; |
| FXFT_Open_Args args; |
| args.flags = FT_OPEN_STREAM; |
| args.stream = stream1; |
| if (FXFT_Open_Face(library, &args, faceIndex, Face)) { |
| FX_Free(stream1); |
| return FALSE; |
| } |
| if (stream) { |
| *stream = stream1; |
| } |
| return TRUE; |
| } |
| FX_BOOL CFX_Font::LoadFile(IFX_FileRead* pFile, int nFaceIndex, int* pFaceCount) |
| { |
| m_bEmbedded = FALSE; |
| FXFT_Library library; |
| if (CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary == NULL) |
| FXFT_Init_FreeType(&CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary); |
| library = CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary; |
| FXFT_Stream stream = NULL; |
| if (!_LoadFile(library, &m_Face, pFile, &stream, nFaceIndex)) |
| return FALSE; |
| if (pFaceCount) |
| *pFaceCount = (int)m_Face->num_faces; |
| m_pOwnedStream = stream; |
| FXFT_Set_Pixel_Sizes(m_Face, 0, 64); |
| return TRUE; |
| } |
| int CFX_Font::GetGlyphWidth(FX_DWORD glyph_index) |
| { |
| if (!m_Face) { |
| return 0; |
| } |
| if (m_pSubstFont && (m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM)) { |
| AdjustMMParams(glyph_index, 0, 0); |
| } |
| int err = FXFT_Load_Glyph(m_Face, glyph_index, FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); |
| if (err) { |
| return 0; |
| } |
| int width = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriAdvance(m_Face)); |
| return width; |
| } |
| static FXFT_Face FT_LoadFont(uint8_t* pData, int size) |
| { |
| FXFT_Library library; |
| if (CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary == NULL) { |
| FXFT_Init_FreeType(&CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary); |
| } |
| library = CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary; |
| FXFT_Face face = NULL; |
| int error = FXFT_New_Memory_Face(library, pData, size, 0, &face); |
| if (error) { |
| return NULL; |
| } |
| error = FXFT_Set_Pixel_Sizes(face, 64, 64); |
| if (error) { |
| return NULL; |
| } |
| return face; |
| } |
| FX_BOOL CFX_Font::LoadEmbedded(const uint8_t* data, FX_DWORD size) |
| { |
| m_pFontDataAllocation = FX_Alloc(uint8_t, size); |
| FXSYS_memcpy(m_pFontDataAllocation, data, size); |
| m_Face = FT_LoadFont((uint8_t*)m_pFontDataAllocation, size); |
| m_pFontData = (uint8_t*)m_pFontDataAllocation; |
| m_bEmbedded = TRUE; |
| m_dwSize = size; |
| return m_Face != NULL; |
| } |
| FX_BOOL CFX_Font::IsTTFont() |
| { |
| if (m_Face == NULL) { |
| return FALSE; |
| } |
| return FXFT_Is_Face_TT_OT(m_Face) == FXFT_FACE_FLAG_SFNT; |
| } |
| int CFX_Font::GetAscent() const |
| { |
| if (m_Face == NULL) { |
| return 0; |
| } |
| int ascent = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Ascender(m_Face)); |
| return ascent; |
| } |
| int CFX_Font::GetDescent() const |
| { |
| if (m_Face == NULL) { |
| return 0; |
| } |
| int descent = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Descender(m_Face)); |
| return descent; |
| } |
| FX_BOOL CFX_Font::GetGlyphBBox(FX_DWORD glyph_index, FX_RECT &bbox) |
| { |
| if (m_Face == NULL) { |
| return FALSE; |
| } |
| if (FXFT_Is_Face_Tricky(m_Face)) { |
| int error = FXFT_Set_Char_Size(m_Face, 0, 1000 * 64, 72, 72); |
| if (error) { |
| return FALSE; |
| } |
| error = FXFT_Load_Glyph(m_Face, glyph_index, FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); |
| if (error) { |
| return FALSE; |
| } |
| FXFT_BBox cbox; |
| FT_Glyph glyph; |
| error = FXFT_Get_Glyph(((FXFT_Face)m_Face)->glyph, &glyph); |
| if (error) { |
| return FALSE; |
| } |
| FXFT_Glyph_Get_CBox(glyph, FXFT_GLYPH_BBOX_PIXELS, &cbox); |
| int pixel_size_x = ((FXFT_Face)m_Face)->size->metrics.x_ppem, |
| pixel_size_y = ((FXFT_Face)m_Face)->size->metrics.y_ppem; |
| if (pixel_size_x == 0 || pixel_size_y == 0) { |
| bbox.left = cbox.xMin; |
| bbox.right = cbox.xMax; |
| bbox.top = cbox.yMax; |
| bbox.bottom = cbox.yMin; |
| } else { |
| bbox.left = cbox.xMin * 1000 / pixel_size_x; |
| bbox.right = cbox.xMax * 1000 / pixel_size_x; |
| bbox.top = cbox.yMax * 1000 / pixel_size_y; |
| bbox.bottom = cbox.yMin * 1000 / pixel_size_y; |
| } |
| if (bbox.top > FXFT_Get_Face_Ascender(m_Face)) { |
| bbox.top = FXFT_Get_Face_Ascender(m_Face); |
| } |
| if (bbox.bottom < FXFT_Get_Face_Descender(m_Face)) { |
| bbox.bottom = FXFT_Get_Face_Descender(m_Face); |
| } |
| FT_Done_Glyph(glyph); |
| return FXFT_Set_Pixel_Sizes(m_Face, 0, 64) == 0; |
| } |
| if (FXFT_Load_Glyph(m_Face, glyph_index, FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) { |
| return FALSE; |
| } |
| int em = FXFT_Get_Face_UnitsPerEM(m_Face); |
| if (em == 0) { |
| bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face); |
| bbox.bottom = FXFT_Get_Glyph_HoriBearingY(m_Face); |
| bbox.top = bbox.bottom - FXFT_Get_Glyph_Height(m_Face); |
| bbox.right = bbox.left + FXFT_Get_Glyph_Width(m_Face); |
| } else { |
| bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face) * 1000 / em; |
| bbox.top = (FXFT_Get_Glyph_HoriBearingY(m_Face) - FXFT_Get_Glyph_Height(m_Face)) * 1000 / em; |
| bbox.right = (FXFT_Get_Glyph_HoriBearingX(m_Face) + FXFT_Get_Glyph_Width(m_Face)) * 1000 / em; |
| bbox.bottom = (FXFT_Get_Glyph_HoriBearingY(m_Face)) * 1000 / em; |
| } |
| return TRUE; |
| } |
| FX_BOOL CFX_Font::IsItalic() |
| { |
| if (m_Face == NULL) { |
| return FALSE; |
| } |
| FX_BOOL ret = FXFT_Is_Face_Italic(m_Face) == FXFT_STYLE_FLAG_ITALIC; |
| if (!ret) { |
| CFX_ByteString str(FXFT_Get_Face_Style_Name(m_Face)); |
| str.MakeLower(); |
| if (str.Find("italic") != -1) { |
| ret = TRUE; |
| } |
| } |
| return ret; |
| } |
| FX_BOOL CFX_Font::IsBold() |
| { |
| if (m_Face == NULL) { |
| return FALSE; |
| } |
| return FXFT_Is_Face_Bold(m_Face) == FXFT_STYLE_FLAG_BOLD; |
| } |
| FX_BOOL CFX_Font::IsFixedWidth() |
| { |
| if (m_Face == NULL) { |
| return FALSE; |
| } |
| return FXFT_Is_Face_fixedwidth(m_Face); |
| } |
| CFX_WideString CFX_Font::GetPsName() const |
| { |
| if (m_Face == NULL) { |
| return CFX_WideString(); |
| } |
| CFX_WideString psName = CFX_WideString::FromLocal(FXFT_Get_Postscript_Name(m_Face)); |
| if (psName.IsEmpty()) { |
| psName = CFX_WideString::FromLocal("Untitled"); |
| } |
| return psName; |
| } |
| CFX_ByteString CFX_Font::GetFamilyName() const |
| { |
| if (m_Face == NULL && m_pSubstFont == NULL) { |
| return CFX_ByteString(); |
| } |
| if (m_Face) { |
| return CFX_ByteString(FXFT_Get_Face_Family_Name(m_Face)); |
| } else { |
| return m_pSubstFont->m_Family; |
| } |
| } |
| CFX_ByteString CFX_Font::GetFaceName() const |
| { |
| if (m_Face == NULL && m_pSubstFont == NULL) { |
| return CFX_ByteString(); |
| } |
| if (m_Face) { |
| CFX_ByteString facename; |
| CFX_ByteString style = CFX_ByteString(FXFT_Get_Face_Style_Name(m_Face)); |
| facename = GetFamilyName(); |
| if (facename.IsEmpty()) { |
| facename = "Untitled"; |
| } |
| if (!style.IsEmpty() && style != "Regular") { |
| facename += " " + style; |
| } |
| return facename; |
| } else { |
| return m_pSubstFont->m_Family; |
| } |
| } |
| FX_BOOL CFX_Font::GetBBox(FX_RECT &bbox) |
| { |
| if (m_Face == NULL) { |
| return FALSE; |
| } |
| int em = FXFT_Get_Face_UnitsPerEM(m_Face); |
| if (em == 0) { |
| bbox.left = FXFT_Get_Face_xMin(m_Face); |
| bbox.bottom = FXFT_Get_Face_yMax(m_Face); |
| bbox.top = FXFT_Get_Face_yMin(m_Face); |
| bbox.right = FXFT_Get_Face_xMax(m_Face); |
| } else { |
| bbox.left = FXFT_Get_Face_xMin(m_Face) * 1000 / em; |
| bbox.top = FXFT_Get_Face_yMin(m_Face) * 1000 / em; |
| bbox.right = FXFT_Get_Face_xMax(m_Face) * 1000 / em; |
| bbox.bottom = FXFT_Get_Face_yMax(m_Face) * 1000 / em; |
| } |
| return TRUE; |
| } |
| int CFX_Font::GetHeight() |
| { |
| if (m_Face == NULL) { |
| return 0; |
| } |
| int height = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Height(m_Face)); |
| return height; |
| } |
| int CFX_Font::GetMaxAdvanceWidth() |
| { |
| if (m_Face == NULL) { |
| return 0; |
| } |
| int width = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_MaxAdvanceWidth(m_Face)); |
| return width; |
| } |
| int CFX_Font::GetULPos() |
| { |
| if (m_Face == NULL) { |
| return 0; |
| } |
| int pos = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_UnderLinePosition(m_Face)); |
| return pos; |
| } |
| int CFX_Font::GetULthickness() |
| { |
| if (m_Face == NULL) { |
| return 0; |
| } |
| int thickness = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_UnderLineThickness(m_Face)); |
| return thickness; |
| } |
| CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont) |
| { |
| m_pFont = pFont; |
| } |
| FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCode(FX_DWORD charcode) |
| { |
| FXFT_Face face = m_pFont->GetFace(); |
| if (!face) { |
| return charcode; |
| } |
| if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0) { |
| return FXFT_Get_Char_Index(face, charcode); |
| } |
| if (m_pFont->m_pSubstFont && m_pFont->m_pSubstFont->m_Charset == 2) { |
| FX_DWORD index = 0; |
| if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0) { |
| index = FXFT_Get_Char_Index(face, charcode); |
| } |
| if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN)) { |
| return FXFT_Get_Char_Index(face, charcode); |
| } |
| } |
| return charcode; |
| } |
| FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCodeEx(FX_DWORD charcode, int encoding) |
| { |
| FXFT_Face face = m_pFont->GetFace(); |
| if (!face) { |
| return charcode; |
| } |
| if (encoding == ENCODING_UNICODE) { |
| return GlyphFromCharCode(charcode); |
| } else { |
| int nmaps = FXFT_Get_Face_CharmapCount(m_pFont->m_Face); |
| int i = 0; |
| while (i < nmaps) { |
| int encoding = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i++]); |
| if (encoding != FXFT_ENCODING_UNICODE) { |
| FXFT_Select_Charmap(face, encoding); |
| break; |
| } |
| } |
| } |
| return FXFT_Get_Char_Index(face, charcode); |
| } |
| IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont) |
| { |
| CFX_UnicodeEncoding* pEncoding = NULL; |
| pEncoding = FX_NEW CFX_UnicodeEncoding(pFont); |
| return pEncoding; |
| } |
| CFX_FontEncodingEX::CFX_FontEncodingEX() |
| { |
| m_pFont = NULL; |
| m_nEncodingID = FXFM_ENCODING_NONE; |
| } |
| FX_BOOL CFX_FontEncodingEX::Init(CFX_Font* pFont, FX_DWORD EncodingID) |
| { |
| if (!pFont) { |
| return FALSE; |
| } |
| m_pFont = pFont; |
| m_nEncodingID = EncodingID; |
| return TRUE; |
| } |
| FX_DWORD CFX_FontEncodingEX::GlyphFromCharCode(FX_DWORD charcode) |
| { |
| FXFT_Face face = m_pFont->m_Face; |
| FT_UInt nIndex = FXFT_Get_Char_Index(face, charcode); |
| if (nIndex > 0) { |
| return nIndex; |
| } |
| int nmaps = FXFT_Get_Face_CharmapCount(face); |
| int m = 0; |
| while (m < nmaps) { |
| int nEncodingID = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[m++]); |
| if (m_nEncodingID == nEncodingID) { |
| continue; |
| } |
| int error = FXFT_Select_Charmap(face, nEncodingID); |
| if (error) { |
| continue; |
| } |
| nIndex = FXFT_Get_Char_Index(face, charcode); |
| if (nIndex > 0) { |
| m_nEncodingID = nEncodingID; |
| return nIndex; |
| } |
| } |
| FXFT_Select_Charmap(face, m_nEncodingID); |
| return 0; |
| } |
| CFX_WideString CFX_FontEncodingEX::UnicodeFromCharCode(FX_DWORD charcode) const |
| { |
| if (m_nEncodingID == FXFM_ENCODING_UNICODE) { |
| return CFX_WideString((FX_WCHAR)charcode); |
| } |
| return CFX_WideString((FX_WCHAR)0); |
| } |
| FX_DWORD CFX_FontEncodingEX::CharCodeFromUnicode(FX_WCHAR Unicode) const |
| { |
| if (m_nEncodingID == FXFM_ENCODING_UNICODE || m_nEncodingID == FXFM_ENCODING_MS_SYMBOL) { |
| return Unicode; |
| } |
| FXFT_Face face = m_pFont->m_Face; |
| int nmaps = FXFT_Get_Face_CharmapCount(face); |
| for (int i = 0; i < nmaps; i++) { |
| int nEncodingID = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i]); |
| if (nEncodingID == FXFM_ENCODING_UNICODE || nEncodingID == FXFM_ENCODING_MS_SYMBOL) { |
| return Unicode; |
| } |
| } |
| return -1; |
| } |
| FX_BOOL CFX_FontEncodingEX::IsUnicodeCompatible() const |
| { |
| return m_nEncodingID == FXFM_ENCODING_UNICODE; |
| } |
| FX_DWORD CFX_FontEncodingEX::GlyphIndexFromName(const FX_CHAR* pStrName) |
| { |
| FXFT_Face face = m_pFont->m_Face; |
| return FT_Get_Name_Index(face, (FT_String*)pStrName); |
| } |
| CFX_ByteString CFX_FontEncodingEX::NameFromGlyphIndex(FX_DWORD dwGlyphIndex) |
| { |
| FXFT_Face face = m_pFont->m_Face; |
| CFX_ByteString glyphName(" "); |
| if (FT_HAS_GLYPH_NAMES(((FT_Face)face))) { |
| if (FT_Get_Glyph_Name((FT_Face)face, dwGlyphIndex, (FT_Pointer)(const FX_CHAR*)glyphName, 16)) { |
| glyphName.Empty(); |
| return glyphName; |
| } |
| return glyphName; |
| } else { |
| return glyphName; |
| } |
| } |
| FX_DWORD CFX_FontEncodingEX::CharCodeFromGlyphIndex(FX_DWORD dwGlyphIndex) |
| { |
| FXFT_Face face = m_pFont->GetFace(); |
| FX_DWORD charcode; |
| FT_UInt gid; |
| charcode = FT_Get_First_Char((FT_Face)face, &gid); |
| while (gid != 0) { |
| if (dwGlyphIndex == gid) { |
| return charcode; |
| } |
| charcode = FT_Get_Next_Char((FT_Face)face, charcode, &gid); |
| } |
| int nmaps = FXFT_Get_Face_CharmapCount(face); |
| int m = 0; |
| while (m < nmaps) { |
| int nEncodingID = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[m++]); |
| if (m_nEncodingID == nEncodingID) { |
| continue; |
| } |
| int error = FXFT_Select_Charmap(face, nEncodingID); |
| if (error) { |
| continue; |
| } |
| charcode = FT_Get_First_Char((FT_Face)face, &gid); |
| while (gid != 0) { |
| if (dwGlyphIndex == gid) { |
| m_nEncodingID = nEncodingID; |
| return charcode; |
| } |
| charcode = FT_Get_Next_Char((FT_Face)face, charcode, &gid); |
| } |
| } |
| return (FX_DWORD) - 1; |
| } |
| static const FX_DWORD gs_EncodingID[] = { |
| FXFM_ENCODING_MS_SYMBOL, |
| FXFM_ENCODING_UNICODE, |
| FXFM_ENCODING_MS_SJIS, |
| FXFM_ENCODING_MS_GB2312, |
| FXFM_ENCODING_MS_BIG5, |
| FXFM_ENCODING_MS_WANSUNG, |
| FXFM_ENCODING_MS_JOHAB, |
| FXFM_ENCODING_ADOBE_STANDARD, |
| FXFM_ENCODING_ADOBE_EXPERT, |
| FXFM_ENCODING_ADOBE_CUSTOM, |
| FXFM_ENCODING_ADOBE_LATIN_1, |
| FXFM_ENCODING_OLD_LATIN_2, |
| FXFM_ENCODING_APPLE_ROMAN |
| }; |
| static IFX_FontEncodingEx* _FXFM_CreateFontEncoding(CFX_Font* pFont, FX_DWORD nEncodingID) |
| { |
| int error = FXFT_Select_Charmap(pFont->m_Face, nEncodingID); |
| if (error) { |
| return NULL; |
| } |
| CFX_FontEncodingEX* pFontEncoding = FX_NEW CFX_FontEncodingEX; |
| if (pFontEncoding && !pFontEncoding->Init(pFont, nEncodingID)) { |
| delete pFontEncoding; |
| pFontEncoding = NULL; |
| } |
| return pFontEncoding; |
| } |
| IFX_FontEncodingEx* FX_CreateFontEncodingEx(CFX_Font* pFont, FX_DWORD nEncodingID) |
| { |
| if (!pFont || !pFont->m_Face) { |
| return NULL; |
| } |
| if (nEncodingID != FXFM_ENCODING_NONE) { |
| return _FXFM_CreateFontEncoding(pFont, nEncodingID); |
| } |
| static int s_count = sizeof(gs_EncodingID) / sizeof(FX_DWORD); |
| for (int i = 0; i < s_count; i++) { |
| IFX_FontEncodingEx* pFontEncoding = _FXFM_CreateFontEncoding(pFont, gs_EncodingID[i]); |
| if (pFontEncoding) { |
| return pFontEncoding; |
| } |
| } |
| return NULL; |
| } |
