1 // Copyright 2016 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/fpdfapi/render/cpdf_charposlist.h" 8 9 #include "core/fpdfapi/font/cpdf_cidfont.h" 10 #include "core/fpdfapi/font/cpdf_font.h" 11 #include "third_party/base/stl_util.h" 12 13 CPDF_CharPosList::CPDF_CharPosList() { 14 m_pCharPos = nullptr; 15 m_nChars = 0; 16 } 17 18 CPDF_CharPosList::~CPDF_CharPosList() { 19 FX_Free(m_pCharPos); 20 } 21 22 void CPDF_CharPosList::Load(const std::vector<uint32_t>& charCodes, 23 const std::vector<FX_FLOAT>& charPos, 24 CPDF_Font* pFont, 25 FX_FLOAT FontSize) { 26 int nChars = pdfium::CollectionSize<int>(charCodes); 27 m_pCharPos = FX_Alloc(FXTEXT_CHARPOS, nChars); 28 m_nChars = 0; 29 CPDF_CIDFont* pCIDFont = pFont->AsCIDFont(); 30 bool bVertWriting = pCIDFont && pCIDFont->IsVertWriting(); 31 for (int iChar = 0; iChar < nChars; iChar++) { 32 uint32_t CharCode = charCodes[iChar]; 33 if (CharCode == static_cast<uint32_t>(-1)) 34 continue; 35 36 bool bVert = false; 37 FXTEXT_CHARPOS& charpos = m_pCharPos[m_nChars++]; 38 if (pCIDFont) 39 charpos.m_bFontStyle = true; 40 41 charpos.m_GlyphIndex = pFont->GlyphFromCharCode(CharCode, &bVert); 42 if (charpos.m_GlyphIndex != static_cast<uint32_t>(-1)) { 43 charpos.m_FallbackFontPosition = -1; 44 } else { 45 charpos.m_FallbackFontPosition = 46 pFont->FallbackFontFromCharcode(CharCode); 47 charpos.m_GlyphIndex = pFont->FallbackGlyphFromCharcode( 48 charpos.m_FallbackFontPosition, CharCode); 49 } 50 51 // TODO(npm): Figure out how this affects m_ExtGID 52 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ 53 charpos.m_ExtGID = pFont->GlyphFromCharCodeExt(CharCode); 54 #endif 55 if (!pFont->IsEmbedded() && !pFont->IsCIDFont()) 56 charpos.m_FontCharWidth = pFont->GetCharWidthF(CharCode); 57 else 58 charpos.m_FontCharWidth = 0; 59 60 charpos.m_Origin = CFX_PointF(iChar ? charPos[iChar - 1] : 0, 0); 61 charpos.m_bGlyphAdjust = false; 62 if (!pCIDFont) 63 continue; 64 65 uint16_t CID = pCIDFont->CIDFromCharCode(CharCode); 66 if (bVertWriting) { 67 charpos.m_Origin = CFX_PointF(0, charpos.m_Origin.x); 68 69 short vx; 70 short vy; 71 pCIDFont->GetVertOrigin(CID, vx, vy); 72 charpos.m_Origin.x -= FontSize * vx / 1000; 73 charpos.m_Origin.y -= FontSize * vy / 1000; 74 } 75 76 const uint8_t* pTransform = pCIDFont->GetCIDTransform(CID); 77 if (pTransform && !bVert) { 78 charpos.m_AdjustMatrix[0] = pCIDFont->CIDTransformToFloat(pTransform[0]); 79 charpos.m_AdjustMatrix[2] = pCIDFont->CIDTransformToFloat(pTransform[2]); 80 charpos.m_AdjustMatrix[1] = pCIDFont->CIDTransformToFloat(pTransform[1]); 81 charpos.m_AdjustMatrix[3] = pCIDFont->CIDTransformToFloat(pTransform[3]); 82 charpos.m_Origin.x += 83 pCIDFont->CIDTransformToFloat(pTransform[4]) * FontSize; 84 charpos.m_Origin.y += 85 pCIDFont->CIDTransformToFloat(pTransform[5]) * FontSize; 86 charpos.m_bGlyphAdjust = true; 87 } 88 } 89 } 90
