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Diffstat (limited to 'core/fpdftext/cpdf_textpage.h')
| -rw-r--r-- | core/fpdftext/cpdf_textpage.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/core/fpdftext/cpdf_textpage.h b/core/fpdftext/cpdf_textpage.h new file mode 100644 index 0000000000..46fcafa6c0 --- /dev/null +++ b/core/fpdftext/cpdf_textpage.h @@ -0,0 +1,181 @@ +// Copyright 2016 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_CPDF_TEXTPAGE_H_ +#define CORE_FPDFTEXT_CPDF_TEXTPAGE_H_ + +#include <deque> +#include <vector> + +#include "core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h" +#include "core/fxcrt/include/fx_basic.h" +#include "core/fxcrt/include/fx_coordinates.h" +#include "core/fxcrt/include/fx_string.h" + +class CPDF_Font; +class CPDF_FormObject; +class CPDF_Page; +class CPDF_TextObject; + +#define FPDFTEXT_MATCHCASE 0x00000001 +#define FPDFTEXT_MATCHWHOLEWORD 0x00000002 +#define FPDFTEXT_CONSECUTIVE 0x00000004 + +#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 TEXT_SPACE_CHAR L' ' +#define TEXT_LINEFEED_CHAR L'\n' +#define TEXT_RETURN_CHAR L'\r' +#define TEXT_EMPTY L"" +#define TEXT_SPACE L" " +#define TEXT_RETURN_LINEFEED L"\r\n" +#define TEXT_LINEFEED L"\n" +#define TEXT_CHARRATIO_GAPDELTA 0.070 + +enum class FPDFText_MarkedContent { Pass = 0, Done, Delay }; + +enum class FPDFText_Direction { Left = -1, Right = 1 }; + +struct FPDF_CHAR_INFO { + FX_WCHAR m_Unicode; + FX_WCHAR m_Charcode; + int32_t m_Flag; + FX_FLOAT m_FontSize; + FX_FLOAT m_OriginX; + FX_FLOAT m_OriginY; + CFX_FloatRect m_CharBox; + CPDF_TextObject* m_pTextObj; + CFX_Matrix m_Matrix; +}; + +struct FPDF_SEGMENT { + int m_Start; + int m_nCount; +}; + +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 PDFTEXT_Obj { + CPDF_TextObject* m_pTextObj; + CFX_Matrix m_formMatrix; +}; + +class CPDF_TextPage { + public: + CPDF_TextPage(const CPDF_Page* pPage, FPDFText_Direction flags); + ~CPDF_TextPage(); + + // IPDF_TextPage: + void ParseTextPage(); + bool IsParsed() const { return m_bIsParsed; } + int CharIndexFromTextIndex(int TextIndex) const; + int TextIndexFromCharIndex(int CharIndex) const; + int CountChars() const; + void GetCharInfo(int index, FPDF_CHAR_INFO* info) const; + std::vector<CFX_FloatRect> GetRectArray(int start, int nCount) const; + int GetIndexAtPos(CFX_FloatPoint point, + FX_FLOAT xTolerance, + FX_FLOAT yTolerance) const; + int GetIndexAtPos(FX_FLOAT x, + FX_FLOAT y, + FX_FLOAT xTolerance, + FX_FLOAT yTolerance) const; + CFX_WideString GetTextByRect(const CFX_FloatRect& rect) const; + CFX_WideString GetPageText(int start = 0, int nCount = -1) const; + int CountRects(int start, int nCount); + void GetRect(int rectIndex, + FX_FLOAT& left, + FX_FLOAT& top, + FX_FLOAT& right, + FX_FLOAT& bottom) const; + + static FX_BOOL IsRectIntersect(const CFX_FloatRect& rect1, + const CFX_FloatRect& rect2); + + private: + enum class TextOrientation { + Unknown, + Horizontal, + Vertical, + }; + + enum class GenerateCharacter { + None, + Space, + LineBreak, + Hyphen, + }; + + FX_BOOL IsHyphen(FX_WCHAR curChar); + bool IsControlChar(const PAGECHAR_INFO& charInfo); + 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); + GenerateCharacter 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(uint32_t charCode, CPDF_Font* pFont) const; + void CloseTempLine(); + FPDFText_MarkedContent PreMarkedContent(PDFTEXT_Obj pObj); + void ProcessMarkedContent(PDFTEXT_Obj pObj); + void CheckMarkedContentObject(int32_t& start, int32_t& nCount) const; + void FindPreviousTextObject(); + void AddCharInfoByLRDirection(FX_WCHAR wChar, PAGECHAR_INFO info); + void AddCharInfoByRLDirection(FX_WCHAR wChar, PAGECHAR_INFO info); + TextOrientation GetTextObjectWritingMode( + const CPDF_TextObject* pTextObj) const; + TextOrientation FindTextlineFlowOrientation() const; + void AppendGeneratedCharacter(FX_WCHAR unicode, const CFX_Matrix& formMatrix); + + 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<uint16_t> m_CharIndex; + std::deque<PAGECHAR_INFO> m_CharList; + std::deque<PAGECHAR_INFO> m_TempCharList; + CFX_WideTextBuf m_TextBuf; + CFX_WideTextBuf m_TempTextBuf; + const FPDFText_Direction m_parserflag; + CPDF_TextObject* m_pPreTextObj; + CFX_Matrix m_perMatrix; + bool m_bIsParsed; + CFX_Matrix m_DisplayMatrix; + CFX_ArrayTemplate<FPDF_SEGMENT> m_Segments; + std::vector<CFX_FloatRect> m_SelRects; + CFX_ArrayTemplate<PDFTEXT_Obj> m_LineObj; + TextOrientation m_TextlineDir; + CFX_FloatRect m_CurlineRect; +}; + +#endif // CORE_FPDFTEXT_CPDF_TEXTPAGE_H_ |