213 lines
8.1 KiB
C++
213 lines
8.1 KiB
C++
// 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_FPDFDOC_CPDF_VARIABLETEXT_H_
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#define CORE_FPDFDOC_CPDF_VARIABLETEXT_H_
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#include <memory>
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#include <vector>
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#include "core/fpdfdoc/cpvt_floatrect.h"
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#include "core/fpdfdoc/cpvt_line.h"
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#include "core/fpdfdoc/cpvt_lineinfo.h"
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#include "core/fpdfdoc/cpvt_wordplace.h"
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#include "core/fpdfdoc/cpvt_wordrange.h"
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#include "core/fxcrt/fx_coordinates.h"
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#include "core/fxcrt/fx_string.h"
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#include "core/fxcrt/fx_system.h"
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#include "core/fxcrt/unowned_ptr.h"
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class CPVT_Word;
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class CSection;
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class IPVT_FontMap;
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struct CPVT_WordInfo;
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#define VARIABLETEXT_HALF 0.5f
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class CPDF_VariableText {
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public:
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class Iterator {
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public:
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explicit Iterator(CPDF_VariableText* pVT);
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~Iterator();
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bool NextWord();
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bool PrevWord();
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bool NextLine();
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bool GetWord(CPVT_Word& word) const;
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bool GetLine(CPVT_Line& line) const;
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void SetAt(int32_t nWordIndex);
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void SetAt(const CPVT_WordPlace& place);
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const CPVT_WordPlace& GetWordPlace() const { return m_CurPos; }
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private:
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CPVT_WordPlace m_CurPos;
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UnownedPtr<CPDF_VariableText> const m_pVT;
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};
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class Provider {
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public:
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explicit Provider(IPVT_FontMap* pFontMap);
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virtual ~Provider();
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virtual uint32_t GetCharWidth(int32_t nFontIndex, uint16_t word);
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virtual int32_t GetTypeAscent(int32_t nFontIndex);
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virtual int32_t GetTypeDescent(int32_t nFontIndex);
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virtual int32_t GetWordFontIndex(uint16_t word,
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int32_t charset,
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int32_t nFontIndex);
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virtual bool IsLatinWord(uint16_t word);
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virtual int32_t GetDefaultFontIndex();
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private:
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UnownedPtr<IPVT_FontMap> const m_pFontMap;
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};
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CPDF_VariableText();
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~CPDF_VariableText();
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void SetProvider(CPDF_VariableText::Provider* pProvider);
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CPDF_VariableText::Iterator* GetIterator();
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void SetContentRect(const CPVT_FloatRect& rect);
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CFX_FloatRect GetContentRect() const;
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void SetPlateRect(const CFX_FloatRect& rect);
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const CFX_FloatRect& GetPlateRect() const;
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void SetAlignment(int32_t nFormat) { m_nAlignment = nFormat; }
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void SetPasswordChar(uint16_t wSubWord) { m_wSubWord = wSubWord; }
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void SetLimitChar(int32_t nLimitChar) { m_nLimitChar = nLimitChar; }
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void SetCharSpace(float fCharSpace) { m_fCharSpace = fCharSpace; }
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void SetMultiLine(bool bMultiLine) { m_bMultiLine = bMultiLine; }
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void SetAutoReturn(bool bAuto) { m_bLimitWidth = bAuto; }
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void SetFontSize(float fFontSize) { m_fFontSize = fFontSize; }
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void SetCharArray(int32_t nCharArray) { m_nCharArray = nCharArray; }
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void SetAutoFontSize(bool bAuto) { m_bAutoFontSize = bAuto; }
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void Initialize();
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bool IsValid() const { return m_bInitialized; }
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void RearrangeAll();
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void RearrangePart(const CPVT_WordRange& PlaceRange);
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void SetText(const WideString& text);
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CPVT_WordPlace InsertWord(const CPVT_WordPlace& place,
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uint16_t word,
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int32_t charset);
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CPVT_WordPlace InsertSection(const CPVT_WordPlace& place);
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CPVT_WordPlace DeleteWords(const CPVT_WordRange& PlaceRange);
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CPVT_WordPlace DeleteWord(const CPVT_WordPlace& place);
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CPVT_WordPlace BackSpaceWord(const CPVT_WordPlace& place);
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int32_t GetTotalWords() const;
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float GetFontSize() const { return m_fFontSize; }
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int32_t GetAlignment() const { return m_nAlignment; }
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uint16_t GetPasswordChar() const { return GetSubWord(); }
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int32_t GetCharArray() const { return m_nCharArray; }
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int32_t GetLimitChar() const { return m_nLimitChar; }
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bool IsMultiLine() const { return m_bMultiLine; }
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float GetCharSpace() const { return m_fCharSpace; }
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bool IsAutoReturn() const { return m_bLimitWidth; }
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CPVT_WordPlace GetBeginWordPlace() const;
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CPVT_WordPlace GetEndWordPlace() const;
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CPVT_WordPlace GetPrevWordPlace(const CPVT_WordPlace& place) const;
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CPVT_WordPlace GetNextWordPlace(const CPVT_WordPlace& place) const;
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CPVT_WordPlace SearchWordPlace(const CFX_PointF& point) const;
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CPVT_WordPlace GetUpWordPlace(const CPVT_WordPlace& place,
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const CFX_PointF& point) const;
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CPVT_WordPlace GetDownWordPlace(const CPVT_WordPlace& place,
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const CFX_PointF& point) const;
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CPVT_WordPlace GetLineBeginPlace(const CPVT_WordPlace& place) const;
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CPVT_WordPlace GetLineEndPlace(const CPVT_WordPlace& place) const;
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CPVT_WordPlace GetSectionBeginPlace(const CPVT_WordPlace& place) const;
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CPVT_WordPlace GetSectionEndPlace(const CPVT_WordPlace& place) const;
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void UpdateWordPlace(CPVT_WordPlace& place) const;
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CPVT_WordPlace AdjustLineHeader(const CPVT_WordPlace& place,
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bool bPrevOrNext) const;
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int32_t WordPlaceToWordIndex(const CPVT_WordPlace& place) const;
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CPVT_WordPlace WordIndexToWordPlace(int32_t index) const;
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uint16_t GetSubWord() const { return m_wSubWord; }
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float GetPlateWidth() const { return m_rcPlate.right - m_rcPlate.left; }
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float GetPlateHeight() const { return m_rcPlate.top - m_rcPlate.bottom; }
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CFX_PointF GetBTPoint() const;
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CFX_PointF GetETPoint() const;
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CFX_PointF InToOut(const CFX_PointF& point) const;
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CFX_PointF OutToIn(const CFX_PointF& point) const;
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CFX_FloatRect InToOut(const CPVT_FloatRect& rect) const;
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CPVT_FloatRect OutToIn(const CFX_FloatRect& rect) const;
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float GetFontAscent(int32_t nFontIndex, float fFontSize);
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float GetFontDescent(int32_t nFontIndex, float fFontSize);
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int32_t GetDefaultFontIndex();
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float GetLineLeading();
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int32_t GetAlignment();
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float GetWordWidth(const CPVT_WordInfo& WordInfo);
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float GetWordWidth(int32_t nFontIndex,
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uint16_t Word,
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uint16_t SubWord,
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float fCharSpace,
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float fFontSize,
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float fWordTail);
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float GetWordAscent(const CPVT_WordInfo& WordInfo);
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float GetWordDescent(const CPVT_WordInfo& WordInfo);
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float GetWordAscent(const CPVT_WordInfo& WordInfo, float fFontSize);
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float GetWordDescent(const CPVT_WordInfo& WordInfo, float fFontSize);
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float GetLineAscent();
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float GetLineDescent();
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float GetLineIndent();
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private:
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uint32_t GetCharWidth(int32_t nFontIndex, uint16_t Word, uint16_t SubWord);
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int32_t GetTypeAscent(int32_t nFontIndex);
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int32_t GetTypeDescent(int32_t nFontIndex);
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int32_t GetWordFontIndex(uint16_t word, int32_t charset, int32_t nFontIndex);
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bool IsLatinWord(uint16_t word);
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CPVT_WordPlace AddSection(const CPVT_WordPlace& place);
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CPVT_WordPlace AddLine(const CPVT_WordPlace& place,
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const CPVT_LineInfo& lineinfo);
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CPVT_WordPlace AddWord(const CPVT_WordPlace& place,
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const CPVT_WordInfo& wordinfo);
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float GetWordFontSize();
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int32_t GetWordFontIndex(const CPVT_WordInfo& WordInfo);
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void ClearSectionRightWords(const CPVT_WordPlace& place);
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bool ClearEmptySection(const CPVT_WordPlace& place);
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void ClearEmptySections(const CPVT_WordRange& PlaceRange);
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void LinkLatterSection(const CPVT_WordPlace& place);
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void ClearWords(const CPVT_WordRange& PlaceRange);
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CPVT_WordPlace ClearLeftWord(const CPVT_WordPlace& place);
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CPVT_WordPlace ClearRightWord(const CPVT_WordPlace& place);
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CPVT_FloatRect Rearrange(const CPVT_WordRange& PlaceRange);
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float GetAutoFontSize();
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bool IsBigger(float fFontSize) const;
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CPVT_FloatRect RearrangeSections(const CPVT_WordRange& PlaceRange);
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bool m_bInitialized = false;
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bool m_bMultiLine = false;
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bool m_bLimitWidth = false;
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bool m_bAutoFontSize = false;
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uint16_t m_wSubWord = 0;
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int32_t m_nLimitChar = 0;
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int32_t m_nCharArray = 0;
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int32_t m_nAlignment = 0;
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float m_fLineLeading = 0.0f;
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float m_fCharSpace = 0.0f;
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float m_fFontSize = 0.0f;
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std::vector<std::unique_ptr<CSection>> m_SectionArray;
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UnownedPtr<CPDF_VariableText::Provider> m_pVTProvider;
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std::unique_ptr<CPDF_VariableText::Iterator> m_pVTIterator;
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CFX_FloatRect m_rcPlate;
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CPVT_FloatRect m_rcContent;
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};
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#endif // CORE_FPDFDOC_CPDF_VARIABLETEXT_H_
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