// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGE_H_
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#define CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGE_H_
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#include <deque>
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#include <vector>
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#include "core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h"
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#include "core/fxcrt/include/fx_basic.h"
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#include "core/fxcrt/include/fx_coordinates.h"
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#include "core/fxcrt/include/fx_string.h"
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class CFX_BidiChar;
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class CPDF_Font;
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class CPDF_FormObject;
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class CPDF_Page;
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class CPDF_TextObject;
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enum class FPDFText_MarkedContent { Pass = 0, Done, Delay };
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enum class FPDFText_Direction { Left = -1, Right = 1 };
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struct FPDF_CHAR_INFO {
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FX_WCHAR m_Unicode;
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FX_WCHAR m_Charcode;
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int32_t m_Flag;
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FX_FLOAT m_FontSize;
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FX_FLOAT m_OriginX;
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FX_FLOAT m_OriginY;
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CFX_FloatRect m_CharBox;
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CPDF_TextObject* m_pTextObj;
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CFX_Matrix m_Matrix;
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};
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struct FPDF_SEGMENT {
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int m_Start;
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int m_nCount;
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};
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struct PAGECHAR_INFO {
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int m_CharCode;
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FX_WCHAR m_Unicode;
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FX_FLOAT m_OriginX;
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FX_FLOAT m_OriginY;
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int32_t m_Flag;
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CFX_FloatRect m_CharBox;
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CPDF_TextObject* m_pTextObj;
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CFX_Matrix m_Matrix;
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int m_Index;
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};
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struct PDFTEXT_Obj {
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CPDF_TextObject* m_pTextObj;
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CFX_Matrix m_formMatrix;
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};
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class CPDF_TextPage {
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public:
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CPDF_TextPage(const CPDF_Page* pPage, FPDFText_Direction flags);
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~CPDF_TextPage();
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// IPDF_TextPage:
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void ParseTextPage();
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bool IsParsed() const { return m_bIsParsed; }
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int CharIndexFromTextIndex(int TextIndex) const;
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int TextIndexFromCharIndex(int CharIndex) const;
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int CountChars() const;
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void GetCharInfo(int index, FPDF_CHAR_INFO* info) const;
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std::vector<CFX_FloatRect> GetRectArray(int start, int nCount) const;
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int GetIndexAtPos(CFX_FloatPoint point,
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FX_FLOAT xTolerance,
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FX_FLOAT yTolerance) const;
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int GetIndexAtPos(FX_FLOAT x,
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FX_FLOAT y,
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FX_FLOAT xTolerance,
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FX_FLOAT yTolerance) const;
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CFX_WideString GetTextByRect(const CFX_FloatRect& rect) const;
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std::vector<CFX_FloatRect> GetRectsArrayByRect(
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const CFX_FloatRect& rect) const;
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CFX_WideString GetPageText(int start = 0, int nCount = -1) const;
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int CountRects(int start, int nCount);
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void GetRect(int rectIndex,
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FX_FLOAT& left,
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FX_FLOAT& top,
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FX_FLOAT& right,
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FX_FLOAT& bottom) const;
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int CountBoundedSegments(FX_FLOAT left,
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FX_FLOAT top,
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FX_FLOAT right,
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FX_FLOAT bottom,
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FX_BOOL bContains = FALSE);
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static FX_BOOL IsRectIntersect(const CFX_FloatRect& rect1,
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const CFX_FloatRect& rect2);
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private:
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enum class TextOrientation {
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Unknown,
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Horizontal,
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Vertical,
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};
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enum class GenerateCharacter {
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None,
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Space,
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LineBreak,
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Hyphen,
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};
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FX_BOOL IsHyphen(FX_WCHAR curChar);
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bool IsControlChar(const PAGECHAR_INFO& charInfo);
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void ProcessObject();
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void ProcessFormObject(CPDF_FormObject* pFormObj,
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const CFX_Matrix& formMatrix);
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void ProcessTextObject(PDFTEXT_Obj pObj);
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void ProcessTextObject(CPDF_TextObject* pTextObj,
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const CFX_Matrix& formMatrix,
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const CPDF_PageObjectList* pObjList,
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CPDF_PageObjectList::const_iterator ObjPos);
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GenerateCharacter ProcessInsertObject(const CPDF_TextObject* pObj,
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const CFX_Matrix& formMatrix);
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FX_BOOL GenerateCharInfo(FX_WCHAR unicode, PAGECHAR_INFO& info);
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FX_BOOL IsSameAsPreTextObject(CPDF_TextObject* pTextObj,
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const CPDF_PageObjectList* pObjList,
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CPDF_PageObjectList::const_iterator ObjPos);
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FX_BOOL IsSameTextObject(CPDF_TextObject* pTextObj1,
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CPDF_TextObject* pTextObj2);
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int GetCharWidth(uint32_t charCode, CPDF_Font* pFont) const;
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void CloseTempLine();
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FPDFText_MarkedContent PreMarkedContent(PDFTEXT_Obj pObj);
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void ProcessMarkedContent(PDFTEXT_Obj pObj);
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void CheckMarkedContentObject(int32_t& start, int32_t& nCount) const;
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void FindPreviousTextObject();
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void AddCharInfoByLRDirection(FX_WCHAR wChar, PAGECHAR_INFO info);
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void AddCharInfoByRLDirection(FX_WCHAR wChar, PAGECHAR_INFO info);
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TextOrientation GetTextObjectWritingMode(
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const CPDF_TextObject* pTextObj) const;
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TextOrientation FindTextlineFlowOrientation() const;
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void AppendGeneratedCharacter(FX_WCHAR unicode, const CFX_Matrix& formMatrix);
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void SwapTempTextBuf(int32_t iCharListStartAppend, int32_t iBufStartAppend);
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FX_BOOL IsRightToLeft(const CPDF_TextObject* pTextObj,
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const CPDF_Font* pFont,
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int nItems) const;
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const CPDF_Page* const m_pPage;
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std::vector<uint16_t> m_CharIndex;
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std::deque<PAGECHAR_INFO> m_CharList;
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std::deque<PAGECHAR_INFO> m_TempCharList;
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CFX_WideTextBuf m_TextBuf;
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CFX_WideTextBuf m_TempTextBuf;
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const FPDFText_Direction m_parserflag;
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CPDF_TextObject* m_pPreTextObj;
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CFX_Matrix m_perMatrix;
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bool m_bIsParsed;
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CFX_Matrix m_DisplayMatrix;
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CFX_ArrayTemplate<FPDF_SEGMENT> m_Segments;
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std::vector<CFX_FloatRect> m_SelRects;
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CFX_ArrayTemplate<PDFTEXT_Obj> m_LineObj;
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TextOrientation m_TextlineDir;
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CFX_FloatRect m_CurlineRect;
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};
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#endif // CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGE_H_
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