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Diffstat (limited to 'core/fpdftext/text_int.h')
| -rw-r--r-- | core/fpdftext/text_int.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/core/fpdftext/text_int.h b/core/fpdftext/text_int.h new file mode 100644 index 0000000000..bc110c719b --- /dev/null +++ b/core/fpdftext/text_int.h @@ -0,0 +1,244 @@ +// 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 + +#ifndef CORE_FPDFTEXT_TEXT_INT_H_ +#define CORE_FPDFTEXT_TEXT_INT_H_ + +#include <deque> +#include <vector> + +#include "core/include/fpdfapi/fpdf_page.h" +#include "core/include/fpdftext/fpdf_text.h" +#include "core/include/fxcrt/fx_basic.h" + +class CFX_BidiChar; +class CPDF_FormObject; +class CPDF_LinkExtract; +class CPDF_TextPageFind; + +#define FPDFTEXT_CHAR_ERROR -1 +#define FPDFTEXT_CHAR_NORMAL 0 +#define FPDFTEXT_CHAR_GENERATED 1 +#define FPDFTEXT_CHAR_UNUNICODE 2 +#define FPDFTEXT_CHAR_HYPHEN 3 +#define FPDFTEXT_CHAR_PIECE 4 +#define FPDFTEXT_MC_PASS 0 +#define FPDFTEXT_MC_DONE 1 +#define FPDFTEXT_MC_DELAY 2 + +struct PAGECHAR_INFO { + int m_CharCode; + FX_WCHAR m_Unicode; + FX_FLOAT m_OriginX; + FX_FLOAT m_OriginY; + int32_t m_Flag; + CFX_FloatRect m_CharBox; + CPDF_TextObject* m_pTextObj; + CFX_Matrix m_Matrix; + int m_Index; +}; + +struct FPDF_SEGMENT { + int m_Start; + int m_nCount; +}; + +struct PDFTEXT_Obj { + CPDF_TextObject* m_pTextObj; + CFX_Matrix m_formMatrix; +}; + +class CPDF_TextPage : public IPDF_TextPage { + public: + CPDF_TextPage(const CPDF_Page* pPage, int flags); + ~CPDF_TextPage() override {} + + // IPDF_TextPage: + void ParseTextPage() override; + bool IsParsed() const override { return m_bIsParsed; } + int CharIndexFromTextIndex(int TextIndex) const override; + int TextIndexFromCharIndex(int CharIndex) const override; + int CountChars() const override; + void GetCharInfo(int index, FPDF_CHAR_INFO* info) const override; + void GetRectArray(int start, + int nCount, + CFX_RectArray& rectArray) const override; + int GetIndexAtPos(CFX_FloatPoint point, + FX_FLOAT xTolerance, + FX_FLOAT yTolerance) const override; + int GetIndexAtPos(FX_FLOAT x, + FX_FLOAT y, + FX_FLOAT xTolerance, + FX_FLOAT yTolerance) const override; + CFX_WideString GetTextByRect(const CFX_FloatRect& rect) const override; + void GetRectsArrayByRect(const CFX_FloatRect& rect, + CFX_RectArray& resRectArray) const override; + CFX_WideString GetPageText(int start = 0, int nCount = -1) const override; + int CountRects(int start, int nCount) override; + void GetRect(int rectIndex, + FX_FLOAT& left, + FX_FLOAT& top, + FX_FLOAT& right, + FX_FLOAT& bottom) const override; + FX_BOOL GetBaselineRotate(int rectIndex, int& Rotate) override; + FX_BOOL GetBaselineRotate(const CFX_FloatRect& rect, int& Rotate) override; + int CountBoundedSegments(FX_FLOAT left, + FX_FLOAT top, + FX_FLOAT right, + FX_FLOAT bottom, + FX_BOOL bContains = FALSE) override; + void GetBoundedSegment(int index, int& start, int& count) const override; + int GetWordBreak(int index, int direction) const override; + + static FX_BOOL IsRectIntersect(const CFX_FloatRect& rect1, + const CFX_FloatRect& rect2); + static FX_BOOL IsLetter(FX_WCHAR unicode); + + private: + FX_BOOL IsHyphen(FX_WCHAR curChar); + bool IsControlChar(const PAGECHAR_INFO& charInfo); + FX_BOOL GetBaselineRotate(int start, int end, int& Rotate); + void ProcessObject(); + void ProcessFormObject(CPDF_FormObject* pFormObj, + const CFX_Matrix& formMatrix); + void ProcessTextObject(PDFTEXT_Obj pObj); + void ProcessTextObject(CPDF_TextObject* pTextObj, + const CFX_Matrix& formMatrix, + const CPDF_PageObjectList* pObjList, + CPDF_PageObjectList::const_iterator ObjPos); + int ProcessInsertObject(const CPDF_TextObject* pObj, + const CFX_Matrix& formMatrix); + FX_BOOL GenerateCharInfo(FX_WCHAR unicode, PAGECHAR_INFO& info); + FX_BOOL IsSameAsPreTextObject(CPDF_TextObject* pTextObj, + const CPDF_PageObjectList* pObjList, + CPDF_PageObjectList::const_iterator ObjPos); + FX_BOOL IsSameTextObject(CPDF_TextObject* pTextObj1, + CPDF_TextObject* pTextObj2); + int GetCharWidth(FX_DWORD charCode, CPDF_Font* pFont) const; + void CloseTempLine(); + void OnPiece(CFX_BidiChar* pBidi, CFX_WideString& str); + int32_t PreMarkedContent(PDFTEXT_Obj pObj); + void ProcessMarkedContent(PDFTEXT_Obj pObj); + void CheckMarkedContentObject(int32_t& start, int32_t& nCount) const; + void FindPreviousTextObject(void); + void AddCharInfoByLRDirection(FX_WCHAR wChar, PAGECHAR_INFO info); + void AddCharInfoByRLDirection(FX_WCHAR wChar, PAGECHAR_INFO info); + int32_t GetTextObjectWritingMode(const CPDF_TextObject* pTextObj); + int32_t FindTextlineFlowDirection(); + + void SwapTempTextBuf(int32_t iCharListStartAppend, int32_t iBufStartAppend); + FX_BOOL IsRightToLeft(const CPDF_TextObject* pTextObj, + const CPDF_Font* pFont, + int nItems) const; + + const CPDF_Page* const m_pPage; + std::vector<FX_WORD> m_CharIndex; + std::deque<PAGECHAR_INFO> m_CharList; + std::deque<PAGECHAR_INFO> m_TempCharList; + CFX_WideTextBuf m_TextBuf; + CFX_WideTextBuf m_TempTextBuf; + const int m_parserflag; + CPDF_TextObject* m_pPreTextObj; + CFX_Matrix m_perMatrix; + bool m_bIsParsed; + CFX_Matrix m_DisplayMatrix; + CFX_ArrayTemplate<FPDF_SEGMENT> m_Segments; + CFX_RectArray m_SelRects; + CFX_ArrayTemplate<PDFTEXT_Obj> m_LineObj; + int32_t m_TextlineDir; + CFX_FloatRect m_CurlineRect; +}; + +class CPDF_TextPageFind : public IPDF_TextPageFind { + public: + explicit CPDF_TextPageFind(const IPDF_TextPage* pTextPage); + ~CPDF_TextPageFind() override {} + + // IPDF_TextPageFind + FX_BOOL FindFirst(const CFX_WideString& findwhat, + int flags, + int startPos = 0) override; + FX_BOOL FindNext() override; + FX_BOOL FindPrev() override; + void GetRectArray(CFX_RectArray& rects) const override; + int GetCurOrder() const override; + int GetMatchedCount() const override; + + protected: + void ExtractFindWhat(const CFX_WideString& findwhat); + FX_BOOL IsMatchWholeWord(const CFX_WideString& csPageText, + int startPos, + int endPos); + FX_BOOL ExtractSubString(CFX_WideString& rString, + const FX_WCHAR* lpszFullString, + int iSubString, + FX_WCHAR chSep); + CFX_WideString MakeReverse(const CFX_WideString& str); + int ReverseFind(const CFX_WideString& csPageText, + const CFX_WideString& csWord, + int nStartPos, + int& WordLength); + int GetCharIndex(int index) const; + + private: + std::vector<FX_WORD> m_CharIndex; + const IPDF_TextPage* m_pTextPage; + CFX_WideString m_strText; + CFX_WideString m_findWhat; + int m_flags; + std::vector<CFX_WideString> m_csFindWhatArray; + int m_findNextStart; + int m_findPreStart; + FX_BOOL m_bMatchCase; + FX_BOOL m_bMatchWholeWord; + int m_resStart; + int m_resEnd; + CFX_RectArray m_resArray; + FX_BOOL m_IsFind; +}; + +class CPDF_LinkExt { + public: + CPDF_LinkExt() {} + int m_Start; + int m_Count; + CFX_WideString m_strUrl; + virtual ~CPDF_LinkExt() {} +}; + +typedef CFX_ArrayTemplate<CPDF_LinkExt*> LINK_InfoArray; + +class CPDF_LinkExtract : public IPDF_LinkExtract { + public: + CPDF_LinkExtract(); + ~CPDF_LinkExtract() override; + + // IPDF_LinkExtract + FX_BOOL ExtractLinks(const IPDF_TextPage* pTextPage) override; + int CountLinks() const override; + CFX_WideString GetURL(int index) const override; + void GetBoundedSegment(int index, int& start, int& count) const override; + void GetRects(int index, CFX_RectArray& rects) const override; + + FX_BOOL IsExtract() const { return m_bIsParsed; } + + protected: + void ParseLink(); + void DeleteLinkList(); + FX_BOOL CheckWebLink(CFX_WideString& strBeCheck); + bool CheckMailLink(CFX_WideString& str); + void AppendToLinkList(int start, int count, const CFX_WideString& strUrl); + + private: + LINK_InfoArray m_LinkList; + const CPDF_TextPage* m_pTextPage; + CFX_WideString m_strPageText; + bool m_bIsParsed; +}; + +FX_STRSIZE FX_Unicode_GetNormalization(FX_WCHAR wch, FX_WCHAR* pDst); + +#endif // CORE_FPDFTEXT_TEXT_INT_H_ |