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// 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_FPDFDOC_CPDF_VARIABLETEXT_H_
#define CORE_FPDFDOC_CPDF_VARIABLETEXT_H_
#include <memory>
#include "core/fpdfdoc/cpvt_arraytemplate.h"
#include "core/fpdfdoc/cpvt_floatrect.h"
#include "core/fpdfdoc/cpvt_line.h"
#include "core/fpdfdoc/cpvt_lineinfo.h"
#include "core/fpdfdoc/cpvt_wordplace.h"
#include "core/fpdfdoc/cpvt_wordrange.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxge/fx_font.h"
class CSection;
class IPVT_FontMap;
struct CPVT_SecProps;
struct CPVT_Section;
struct CPVT_SectionInfo;
struct CPVT_Word;
struct CPVT_WordInfo;
struct CPVT_WordProps;
#define VARIABLETEXT_HALF 0.5f
class CPDF_VariableText {
public:
enum class ScriptType { Normal, Super, Sub };
class Iterator {
public:
explicit Iterator(CPDF_VariableText* pVT);
~Iterator();
bool NextWord();
bool PrevWord();
bool NextLine();
bool PrevLine();
bool NextSection();
bool PrevSection();
bool SetWord(const CPVT_Word& word);
bool GetWord(CPVT_Word& word) const;
bool GetLine(CPVT_Line& line) const;
bool GetSection(CPVT_Section& section) const;
bool SetSection(const CPVT_Section& section);
void SetAt(int32_t nWordIndex);
void SetAt(const CPVT_WordPlace& place);
const CPVT_WordPlace& GetAt() const { return m_CurPos; }
private:
CPVT_WordPlace m_CurPos;
CPDF_VariableText* const m_pVT;
};
class Provider {
public:
explicit Provider(IPVT_FontMap* pFontMap);
virtual ~Provider();
virtual int32_t GetCharWidth(int32_t nFontIndex, uint16_t word);
virtual int32_t GetTypeAscent(int32_t nFontIndex);
virtual int32_t GetTypeDescent(int32_t nFontIndex);
virtual int32_t GetWordFontIndex(uint16_t word,
int32_t charset,
int32_t nFontIndex);
virtual bool IsLatinWord(uint16_t word);
virtual int32_t GetDefaultFontIndex();
private:
IPVT_FontMap* const m_pFontMap;
};
CPDF_VariableText();
~CPDF_VariableText();
void SetProvider(CPDF_VariableText::Provider* pProvider);
CPDF_VariableText::Iterator* GetIterator();
void SetContentRect(const CPVT_FloatRect& rect);
CFX_FloatRect GetContentRect() const;
void SetPlateRect(const CFX_FloatRect& rect);
const CFX_FloatRect& GetPlateRect() const;
void SetAlignment(int32_t nFormat) { m_nAlignment = nFormat; }
void SetPasswordChar(uint16_t wSubWord) { m_wSubWord = wSubWord; }
void SetLimitChar(int32_t nLimitChar) { m_nLimitChar = nLimitChar; }
void SetCharSpace(FX_FLOAT fCharSpace) { m_fCharSpace = fCharSpace; }
void SetMultiLine(bool bMultiLine) { m_bMultiLine = bMultiLine; }
void SetAutoReturn(bool bAuto) { m_bLimitWidth = bAuto; }
void SetFontSize(FX_FLOAT fFontSize) { m_fFontSize = fFontSize; }
void SetCharArray(int32_t nCharArray) { m_nCharArray = nCharArray; }
void SetAutoFontSize(bool bAuto) { m_bAutoFontSize = bAuto; }
void Initialize();
bool IsValid() const { return m_bInitial; }
void RearrangeAll();
void RearrangePart(const CPVT_WordRange& PlaceRange);
void ResetAll();
void SetText(const CFX_WideString& text);
CPVT_WordPlace InsertWord(const CPVT_WordPlace& place,
uint16_t word,
int32_t charset,
const CPVT_WordProps* pWordProps);
CPVT_WordPlace InsertSection(const CPVT_WordPlace& place,
const CPVT_SecProps* pSecProps,
const CPVT_WordProps* pWordProps);
CPVT_WordPlace InsertText(const CPVT_WordPlace& place, const FX_WCHAR* text);
CPVT_WordPlace DeleteWords(const CPVT_WordRange& PlaceRange);
CPVT_WordPlace DeleteWord(const CPVT_WordPlace& place);
CPVT_WordPlace BackSpaceWord(const CPVT_WordPlace& place);
int32_t GetTotalWords() const;
FX_FLOAT GetFontSize() const { return m_fFontSize; }
int32_t GetAlignment() const { return m_nAlignment; }
uint16_t GetPasswordChar() const { return GetSubWord(); }
int32_t GetCharArray() const { return m_nCharArray; }
int32_t GetLimitChar() const { return m_nLimitChar; }
bool IsMultiLine() const { return m_bMultiLine; }
int32_t GetHorzScale() const { return m_nHorzScale; }
FX_FLOAT GetCharSpace() const { return m_fCharSpace; }
CPVT_WordPlace GetBeginWordPlace() const;
CPVT_WordPlace GetEndWordPlace() const;
CPVT_WordPlace GetPrevWordPlace(const CPVT_WordPlace& place) const;
CPVT_WordPlace GetNextWordPlace(const CPVT_WordPlace& place) const;
CPVT_WordPlace SearchWordPlace(const CFX_FloatPoint& point) const;
CPVT_WordPlace GetUpWordPlace(const CPVT_WordPlace& place,
const CFX_FloatPoint& point) const;
CPVT_WordPlace GetDownWordPlace(const CPVT_WordPlace& place,
const CFX_FloatPoint& point) const;
CPVT_WordPlace GetLineBeginPlace(const CPVT_WordPlace& place) const;
CPVT_WordPlace GetLineEndPlace(const CPVT_WordPlace& place) const;
CPVT_WordPlace GetSectionBeginPlace(const CPVT_WordPlace& place) const;
CPVT_WordPlace GetSectionEndPlace(const CPVT_WordPlace& place) const;
void UpdateWordPlace(CPVT_WordPlace& place) const;
CPVT_WordPlace AdjustLineHeader(const CPVT_WordPlace& place,
bool bPrevOrNext) const;
int32_t WordPlaceToWordIndex(const CPVT_WordPlace& place) const;
CPVT_WordPlace WordIndexToWordPlace(int32_t index) const;
uint16_t GetSubWord() const { return m_wSubWord; }
FX_FLOAT GetPlateWidth() const { return m_rcPlate.right - m_rcPlate.left; }
FX_FLOAT GetPlateHeight() const { return m_rcPlate.top - m_rcPlate.bottom; }
CFX_SizeF GetPlateSize() const;
CFX_FloatPoint GetBTPoint() const;
CFX_FloatPoint GetETPoint() const;
CFX_FloatPoint InToOut(const CFX_FloatPoint& point) const;
CFX_FloatPoint OutToIn(const CFX_FloatPoint& point) const;
CFX_FloatRect InToOut(const CPVT_FloatRect& rect) const;
CPVT_FloatRect OutToIn(const CFX_FloatRect& rect) const;
private:
friend class CTypeset;
friend class CSection;
int32_t GetCharWidth(int32_t nFontIndex, uint16_t Word, uint16_t SubWord);
int32_t GetTypeAscent(int32_t nFontIndex);
int32_t GetTypeDescent(int32_t nFontIndex);
int32_t GetWordFontIndex(uint16_t word, int32_t charset, int32_t nFontIndex);
int32_t GetDefaultFontIndex();
bool IsLatinWord(uint16_t word);
CPVT_WordPlace AddSection(const CPVT_WordPlace& place,
const CPVT_SectionInfo& secinfo);
CPVT_WordPlace AddLine(const CPVT_WordPlace& place,
const CPVT_LineInfo& lineinfo);
CPVT_WordPlace AddWord(const CPVT_WordPlace& place,
const CPVT_WordInfo& wordinfo);
bool GetWordInfo(const CPVT_WordPlace& place, CPVT_WordInfo& wordinfo);
bool SetWordInfo(const CPVT_WordPlace& place, const CPVT_WordInfo& wordinfo);
bool GetLineInfo(const CPVT_WordPlace& place, CPVT_LineInfo& lineinfo);
bool GetSectionInfo(const CPVT_WordPlace& place, CPVT_SectionInfo& secinfo);
FX_FLOAT GetWordFontSize(const CPVT_WordInfo& WordInfo);
FX_FLOAT GetWordWidth(int32_t nFontIndex,
uint16_t Word,
uint16_t SubWord,
FX_FLOAT fCharSpace,
int32_t nHorzScale,
FX_FLOAT fFontSize,
FX_FLOAT fWordTail);
FX_FLOAT GetWordWidth(const CPVT_WordInfo& WordInfo);
FX_FLOAT GetWordAscent(const CPVT_WordInfo& WordInfo, FX_FLOAT fFontSize);
FX_FLOAT GetWordDescent(const CPVT_WordInfo& WordInfo, FX_FLOAT fFontSize);
FX_FLOAT GetWordAscent(const CPVT_WordInfo& WordInfo);
FX_FLOAT GetWordDescent(const CPVT_WordInfo& WordInfo);
FX_FLOAT GetLineAscent(const CPVT_SectionInfo& SecInfo);
FX_FLOAT GetLineDescent(const CPVT_SectionInfo& SecInfo);
FX_FLOAT GetFontAscent(int32_t nFontIndex, FX_FLOAT fFontSize);
FX_FLOAT GetFontDescent(int32_t nFontIndex, FX_FLOAT fFontSize);
int32_t GetWordFontIndex(const CPVT_WordInfo& WordInfo);
FX_FLOAT GetCharSpace(const CPVT_WordInfo& WordInfo);
int32_t GetHorzScale(const CPVT_WordInfo& WordInfo);
FX_FLOAT GetLineLeading(const CPVT_SectionInfo& SecInfo);
FX_FLOAT GetLineIndent(const CPVT_SectionInfo& SecInfo);
int32_t GetAlignment(const CPVT_SectionInfo& SecInfo);
void ClearSectionRightWords(const CPVT_WordPlace& place);
bool ClearEmptySection(const CPVT_WordPlace& place);
void ClearEmptySections(const CPVT_WordRange& PlaceRange);
void LinkLatterSection(const CPVT_WordPlace& place);
void ClearWords(const CPVT_WordRange& PlaceRange);
CPVT_WordPlace ClearLeftWord(const CPVT_WordPlace& place);
CPVT_WordPlace ClearRightWord(const CPVT_WordPlace& place);
CPVT_FloatRect Rearrange(const CPVT_WordRange& PlaceRange);
FX_FLOAT GetAutoFontSize();
bool IsBigger(FX_FLOAT fFontSize) const;
CPVT_FloatRect RearrangeSections(const CPVT_WordRange& PlaceRange);
void ResetSectionArray();
CPVT_ArrayTemplate<CSection*> m_SectionArray;
int32_t m_nLimitChar;
int32_t m_nCharArray;
bool m_bMultiLine;
bool m_bLimitWidth;
bool m_bAutoFontSize;
int32_t m_nAlignment;
FX_FLOAT m_fLineLeading;
FX_FLOAT m_fCharSpace;
int32_t m_nHorzScale;
uint16_t m_wSubWord;
FX_FLOAT m_fFontSize;
bool m_bInitial;
CPDF_VariableText::Provider* m_pVTProvider;
std::unique_ptr<CPDF_VariableText::Iterator> m_pVTIterator;
CFX_FloatRect m_rcPlate;
CPVT_FloatRect m_rcContent;
};
#endif // CORE_FPDFDOC_CPDF_VARIABLETEXT_H_
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