| // Copyright 2017 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 XFA_FGAS_LAYOUT_CFGAS_BREAK_H_ |
| #define XFA_FGAS_LAYOUT_CFGAS_BREAK_H_ |
| |
| #include <stdint.h> |
| |
| #include <array> |
| |
| #include "core/fxcrt/mask.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "xfa/fgas/layout/cfgas_breakline.h" |
| |
| class CFGAS_GEFont; |
| |
| class CFGAS_Break { |
| public: |
| enum class LayoutStyle : uint8_t { |
| kNone = 0, |
| kPagination = 1 << 0, |
| kExpandTab = 1 << 1, |
| kSingleLine = 1 << 2, |
| kCombText = 1 << 3, |
| }; |
| |
| virtual ~CFGAS_Break(); |
| |
| void Reset(); |
| |
| void SetLayoutStyles(Mask<LayoutStyle> dwLayoutStyles); |
| Mask<LayoutStyle> GetLayoutStyles() const { return m_dwLayoutStyles; } |
| |
| void SetFont(RetainPtr<CFGAS_GEFont> pFont); |
| void SetFontSize(float fFontSize); |
| void SetTabWidth(float fTabWidth); |
| int32_t GetTabWidth() const { return m_iTabWidth; } |
| |
| void SetHorizontalScale(int32_t iScale); |
| void SetVerticalScale(int32_t iScale); |
| void SetLineBreakTolerance(float fTolerance); |
| void SetLineBoundary(float fLineStart, float fLineEnd); |
| |
| void SetCharSpace(float fCharSpace); |
| void SetParagraphBreakChar(wchar_t wch); |
| |
| int32_t CountBreakPieces() const; |
| const CFGAS_BreakPiece* GetBreakPieceUnstable(int32_t index) const; |
| void ClearBreakPieces(); |
| |
| CFGAS_Char* GetLastChar(int32_t index, bool bOmitChar, bool bRichText) const; |
| const CFGAS_BreakLine* GetCurrentLineForTesting() const { return m_pCurLine; } |
| |
| protected: |
| struct TPO { |
| bool operator<(const TPO& that) const { return pos < that.pos; } |
| |
| int32_t index; |
| int32_t pos; |
| }; |
| |
| static const int kMinimumTabWidth; |
| static const float kConversionFactor; |
| |
| explicit CFGAS_Break(Mask<LayoutStyle> dwLayoutStyles); |
| |
| void SetBreakStatus(); |
| bool HasLine() const { return m_iReadyLineIndex >= 0; } |
| bool IsGreaterThanLineWidth(int32_t width) const; |
| FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE dwType) const; |
| |
| FX_CHARTYPE m_eCharType = FX_CHARTYPE::kUnknown; |
| bool m_bSingleLine = false; |
| bool m_bCombText = false; |
| Mask<LayoutStyle> m_dwLayoutStyles = LayoutStyle::kNone; |
| uint32_t m_dwIdentity = 0; |
| int32_t m_iLineStart = 0; |
| int32_t m_iLineWidth = 2000000; |
| wchar_t m_wParagraphBreakChar = L'\n'; |
| int32_t m_iFontSize = 240; |
| int32_t m_iTabWidth = 720000; |
| int32_t m_iHorizontalScale = 100; |
| int32_t m_iVerticalScale = 100; |
| int32_t m_iTolerance = 0; |
| int32_t m_iCharSpace = 0; |
| RetainPtr<CFGAS_GEFont> m_pFont; |
| int8_t m_iReadyLineIndex = -1; |
| std::array<CFGAS_BreakLine, 2> m_Lines; |
| UnownedPtr<CFGAS_BreakLine> m_pCurLine; |
| }; |
| |
| #endif // XFA_FGAS_LAYOUT_CFGAS_BREAK_H_ |