// Copyright 2016 The PDFium Authors // 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_CPVT_VARIABLETEXT_H_ #define CORE_FPDFDOC_CPVT_VARIABLETEXT_H_ #include #include #include #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/cfx_bidi_resolver.h" #include "core/fxcrt/fx_codepage_forward.h" #include "core/fxcrt/fx_coordinates.h" #include "core/fxcrt/to_underlying.h" #include "core/fxcrt/unowned_ptr.h" #include "core/fxcrt/widestring.h" class CPVT_Section; class CPVT_Word; class IPVT_FontMap; struct CPVT_WordInfo; class CPVT_VariableText { public: class Iterator { public: explicit Iterator(CPVT_VariableText* pVT); ~Iterator(); bool NextWord(); bool NextLine(); bool GetWord(CPVT_Word& word) const; bool GetLine(CPVT_Line& line) const; void SetAt(int32_t nWordIndex); void SetAt(const CPVT_WordPlace& place); const CPVT_WordPlace& GetWordPlace() const { return cur_pos_; } float GetLineCaretX(const CPVT_Line& line); private: CPVT_WordPlace cur_pos_; UnownedPtr const vt_; }; class Provider { public: explicit Provider(IPVT_FontMap* font_map); virtual ~Provider(); virtual int 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, FX_Charset charset, int32_t nFontIndex); virtual int32_t GetDefaultFontIndex(); IPVT_FontMap* GetFontMap() { return font_map_; } private: UnownedPtr const font_map_; }; // These values correspond to the "Q" (Quadding) entry from the // ISO 32000-1:2008 spec, table 222. Do not change these values. enum class Alignment { kLeft = 0, kCenter = 1, kRight = 2, }; static constexpr Alignment ToAlignment(int align) { if (align < fxcrt::to_underlying(Alignment::kLeft) || align > fxcrt::to_underlying(Alignment::kRight)) { return Alignment::kLeft; } return static_cast(align); } explicit CPVT_VariableText(Provider* Provider); ~CPVT_VariableText(); void SetProvider(Provider* pProvider); Provider* GetProvider(); CPVT_VariableText::Iterator* GetIterator(); CFX_FloatRect GetContentRect() const; void SetPlateRect(const CFX_FloatRect& rect); const CFX_FloatRect& GetPlateRect() const; void SetAlignment(Alignment alignment) { alignment_ = alignment; } void SetPasswordChar(uint16_t wSubWord) { sub_word_ = wSubWord; } void SetLimitChar(int32_t nLimitChar) { limit_char_ = nLimitChar; } void SetMultiLine(bool bMultiLine) { multi_line_ = bMultiLine; } void SetAutoReturn(bool bAuto) { limit_width_ = bAuto; } void SetFontSize(float fFontSize) { font_size_ = fFontSize; } void SetCharArray(int32_t nCharArray) { char_array_ = nCharArray; } void SetAutoFontSize(bool bAuto) { auto_font_size_ = bAuto; } void SetTextDirection(CFX_BidiResolver::ParagraphDirection direction) { text_direction_ = direction; } CFX_BidiResolver::ParagraphDirection GetTextDirection() const { return text_direction_; } void Initialize(); bool IsValid() const { return initialized_; } void RearrangeAll(); void RearrangePart(const CPVT_WordRange& PlaceRange); void SetText(const WideString& text); CPVT_WordPlace InsertWord(const CPVT_WordPlace& place, uint16_t word, FX_Charset charset); CPVT_WordPlace InsertSection(const CPVT_WordPlace& place); 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; float GetFontSize() const { return font_size_; } Alignment GetAlignment() const { return alignment_; } uint16_t GetPasswordChar() const { return GetSubWord(); } int32_t GetCharArray() const { return char_array_; } int32_t GetLimitChar() const { return limit_char_; } bool IsMultiLine() const { return multi_line_; } bool IsAutoReturn() const { return limit_width_; } 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_PointF& point) const; CPVT_WordPlace GetUpWordPlace(const CPVT_WordPlace& place, const CFX_PointF& point) const; CPVT_WordPlace GetDownWordPlace(const CPVT_WordPlace& place, const CFX_PointF& 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; int32_t WordPlaceToWordIndex(const CPVT_WordPlace& place) const; CPVT_WordPlace WordIndexToWordPlace(int32_t index) const; uint16_t GetSubWord() const { return sub_word_; } float GetPlateWidth() const { return plate_rect_.right - plate_rect_.left; } float GetPlateHeight() const { return plate_rect_.top - plate_rect_.bottom; } CFX_PointF GetBTPoint() const; float GetFontAscent(int32_t nFontIndex, float fFontSize) const; float GetFontDescent(int32_t nFontIndex, float fFontSize) const; int32_t GetDefaultFontIndex(); float GetLineLeading(); float GetWordWidth(const CPVT_WordInfo& WordInfo) const; float GetWordWidth(int32_t nFontIndex, uint16_t Word, uint16_t SubWord, float fFontSize, float fWordTail) const; float GetWordAscent(const CPVT_WordInfo& WordInfo) const; float GetWordDescent(const CPVT_WordInfo& WordInfo) const; float GetWordAscent(const CPVT_WordInfo& WordInfo, float fFontSize) const; float GetWordDescent(const CPVT_WordInfo& WordInfo, float fFontSize) const; float GetLineAscent(); float GetLineDescent(); float GetLineIndent(); private: int GetCharWidth(int32_t nFontIndex, uint16_t Word, uint16_t SubWord) const; int32_t GetWordFontIndex(uint16_t word, FX_Charset charset, int32_t nFontIndex); CPVT_WordPlace AddSection(const CPVT_WordPlace& place); CPVT_WordPlace AddLine(const CPVT_WordPlace& place, const CPVT_LineInfo& lineinfo); CPVT_WordPlace AddWord(const CPVT_WordPlace& place, const CPVT_WordInfo& wordinfo); CPVT_WordPlace PrevLineHeaderPlace(const CPVT_WordPlace& place) const; CPVT_WordPlace NextLineHeaderPlace(const CPVT_WordPlace& place) const; CFX_PointF InToOut(const CFX_PointF& point) const; CFX_PointF OutToIn(const CFX_PointF& point) const; CFX_FloatRect InToOut(const CPVT_FloatRect& rect) const; void ClearSectionRightWords(const CPVT_WordPlace& place); void 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); void Rearrange(const CPVT_WordRange& PlaceRange); float GetAutoFontSize(); bool IsBigger(float fFontSize) const; CPVT_FloatRect RearrangeSections(const CPVT_WordRange& PlaceRange); bool initialized_ = false; bool multi_line_ = false; bool limit_width_ = false; bool auto_font_size_ = false; CFX_BidiResolver::ParagraphDirection text_direction_ = CFX_BidiResolver::ParagraphDirection::kAuto; uint16_t sub_word_ = 0; int32_t limit_char_ = 0; int32_t char_array_ = 0; Alignment alignment_ = Alignment::kLeft; float line_leading_ = 0.0f; float font_size_ = 0.0f; std::vector> section_array_; UnownedPtr vt_provider_; std::unique_ptr vt_iterator_; CFX_FloatRect plate_rect_; CPVT_FloatRect content_rect_; }; #endif // CORE_FPDFDOC_CPVT_VARIABLETEXT_H_