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 #ifndef CORE_FPDFAPI_PAGE_CPDF_DOCPAGEDATA_H_ 8 #define CORE_FPDFAPI_PAGE_CPDF_DOCPAGEDATA_H_ 9 10 #include <map> 11 #include <memory> 12 #include <set> 13 14 #include "core/fpdfapi/font/cpdf_font.h" 15 #include "core/fpdfapi/page/cpdf_colorspace.h" 16 #include "core/fpdfapi/parser/cpdf_document.h" 17 #include "core/fxcrt/fx_coordinates.h" 18 #include "core/fxcrt/fx_string.h" 19 #include "core/fxcrt/observed_ptr.h" 20 #include "core/fxcrt/retain_ptr.h" 21 22 class CFX_Font; 23 class CPDF_Dictionary; 24 class CPDF_FontEncoding; 25 class CPDF_IccProfile; 26 class CPDF_Image; 27 class CPDF_Object; 28 class CPDF_Pattern; 29 class CPDF_Stream; 30 class CPDF_StreamAcc; 31 32 class CPDF_DocPageData : public CPDF_Document::PageDataIface, 33 public CPDF_Font::FormFactoryIface { 34 public: 35 static CPDF_DocPageData* FromDocument(const CPDF_Document* pDoc); 36 37 CPDF_DocPageData(); 38 ~CPDF_DocPageData() override; 39 40 // CPDF_Document::PageDataIface: 41 void ClearStockFont() override; 42 RetainPtr<CPDF_StreamAcc> GetFontFileStreamAcc( 43 const CPDF_Stream* pFontStream) override; 44 void MaybePurgeFontFileStreamAcc(const CPDF_Stream* pFontStream) override; 45 46 // CPDF_Font::FormFactoryIFace: 47 std::unique_ptr<CPDF_Font::FormIface> CreateForm( 48 CPDF_Document* pDocument, 49 CPDF_Dictionary* pPageResources, 50 CPDF_Stream* pFormStream) override; 51 IsForceClear()52 bool IsForceClear() const { return m_bForceClear; } 53 54 RetainPtr<CPDF_Font> AddFont(std::unique_ptr<CFX_Font> pFont, int charset); 55 RetainPtr<CPDF_Font> GetFont(CPDF_Dictionary* pFontDict); 56 RetainPtr<CPDF_Font> AddStandardFont(const ByteString& fontName, 57 const CPDF_FontEncoding* pEncoding); 58 RetainPtr<CPDF_Font> GetStandardFont(const ByteString& fontName, 59 const CPDF_FontEncoding* pEncoding); 60 #if defined(OS_WIN) 61 RetainPtr<CPDF_Font> AddWindowsFont(LOGFONTA* pLogFont); 62 #endif 63 64 // Loads a colorspace. 65 RetainPtr<CPDF_ColorSpace> GetColorSpace(const CPDF_Object* pCSObj, 66 const CPDF_Dictionary* pResources); 67 68 // Loads a colorspace in a context that might be while loading another 69 // colorspace. |pVisited| is passed recursively to avoid circular calls 70 // involving CPDF_ColorSpace::Load(). 71 RetainPtr<CPDF_ColorSpace> GetColorSpaceGuarded( 72 const CPDF_Object* pCSObj, 73 const CPDF_Dictionary* pResources, 74 std::set<const CPDF_Object*>* pVisited); 75 76 RetainPtr<CPDF_Pattern> GetPattern(CPDF_Object* pPatternObj, 77 bool bShading, 78 const CFX_Matrix& matrix); 79 80 RetainPtr<CPDF_Image> GetImage(uint32_t dwStreamObjNum); 81 void MaybePurgeImage(uint32_t dwStreamObjNum); 82 83 RetainPtr<CPDF_IccProfile> GetIccProfile(const CPDF_Stream* pProfileStream); 84 85 private: 86 // Loads a colorspace in a context that might be while loading another 87 // colorspace, or even in a recursive call from this method itself. |pVisited| 88 // is passed recursively to avoid circular calls involving 89 // CPDF_ColorSpace::Load() and |pVisitedInternal| is also passed recursively 90 // to avoid circular calls with this method calling itself. 91 RetainPtr<CPDF_ColorSpace> GetColorSpaceInternal( 92 const CPDF_Object* pCSObj, 93 const CPDF_Dictionary* pResources, 94 std::set<const CPDF_Object*>* pVisited, 95 std::set<const CPDF_Object*>* pVisitedInternal); 96 97 size_t CalculateEncodingDict(int charset, CPDF_Dictionary* pBaseDict); 98 CPDF_Dictionary* ProcessbCJK( 99 CPDF_Dictionary* pBaseDict, 100 int charset, 101 ByteString basefont, 102 std::function<void(wchar_t, wchar_t, CPDF_Array*)> Insert); 103 void Clear(bool bForceRelease); 104 105 bool m_bForceClear = false; 106 107 // Specific destruction order may be required between maps. 108 std::map<ByteString, RetainPtr<const CPDF_Stream>> m_HashProfileMap; 109 std::map<const CPDF_Object*, ObservedPtr<CPDF_ColorSpace>> m_ColorSpaceMap; 110 std::map<const CPDF_Stream*, RetainPtr<CPDF_StreamAcc>> m_FontFileMap; 111 std::map<const CPDF_Stream*, ObservedPtr<CPDF_IccProfile>> m_IccProfileMap; 112 std::map<const CPDF_Object*, ObservedPtr<CPDF_Pattern>> m_PatternMap; 113 std::map<uint32_t, RetainPtr<CPDF_Image>> m_ImageMap; 114 std::map<const CPDF_Dictionary*, ObservedPtr<CPDF_Font>> m_FontMap; 115 }; 116 117 #endif // CORE_FPDFAPI_PAGE_CPDF_DOCPAGEDATA_H_ 118