| // Copyright 2014 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 XFA_FGAS_LAYOUT_CFX_TXTBREAK_H_ |
| #define XFA_FGAS_LAYOUT_CFX_TXTBREAK_H_ |
| |
| #include <deque> |
| #include <vector> |
| |
| #include "core/fxcrt/fx_coordinates.h" |
| #include "xfa/fgas/layout/cfx_break.h" |
| #include "xfa/fgas/layout/cfx_char.h" |
| |
| class CFGAS_GEFont; |
| class TextCharPos; |
| |
| #define FX_TXTCHARSTYLE_ArabicShadda 0x0020 |
| #define FX_TXTCHARSTYLE_OddBidiLevel 0x0040 |
| |
| enum CFX_TxtLineAlignment { |
| CFX_TxtLineAlignment_Left = 0, |
| CFX_TxtLineAlignment_Center = 1 << 0, |
| CFX_TxtLineAlignment_Right = 1 << 1, |
| CFX_TxtLineAlignment_Justified = 1 << 2 |
| }; |
| |
| inline bool CFX_BreakTypeNoneOrPiece(CFX_BreakType type) { |
| return type == CFX_BreakType::None || type == CFX_BreakType::Piece; |
| } |
| |
| class CFX_TxtBreak final : public CFX_Break { |
| public: |
| class Engine { |
| public: |
| virtual ~Engine(); |
| virtual wchar_t GetChar(size_t idx) const = 0; |
| // Non-const so we can force a layout if needed. |
| virtual size_t GetWidthOfChar(size_t idx) = 0; |
| }; |
| |
| struct Run { |
| Run(); |
| Run(const Run& other); |
| ~Run(); |
| |
| CFX_TxtBreak::Engine* pEdtEngine = nullptr; |
| WideString wsStr; |
| int32_t* pWidths = nullptr; |
| int32_t iStart = 0; |
| int32_t iLength = 0; |
| RetainPtr<CFGAS_GEFont> pFont; |
| float fFontSize = 12.0f; |
| uint32_t dwStyles = 0; |
| int32_t iHorizontalScale = 100; |
| int32_t iVerticalScale = 100; |
| uint32_t dwCharStyles = 0; |
| const CFX_RectF* pRect = nullptr; |
| bool bSkipSpace = true; |
| }; |
| |
| CFX_TxtBreak(); |
| ~CFX_TxtBreak() override; |
| |
| void SetLineWidth(float fLineWidth); |
| void SetAlignment(int32_t iAlignment); |
| void SetCombWidth(float fCombWidth); |
| CFX_BreakType EndBreak(CFX_BreakType dwStatus); |
| |
| size_t GetDisplayPos(const Run* pTxtRun, TextCharPos* pCharPos) const; |
| std::vector<CFX_RectF> GetCharRects(const Run* pTxtRun, bool bCharBBox) const; |
| CFX_BreakType AppendChar(wchar_t wch); |
| |
| private: |
| void AppendChar_Combination(CFX_Char* pCurChar); |
| void AppendChar_Tab(CFX_Char* pCurChar); |
| CFX_BreakType AppendChar_Control(CFX_Char* pCurChar); |
| CFX_BreakType AppendChar_Arabic(CFX_Char* pCurChar); |
| CFX_BreakType AppendChar_Others(CFX_Char* pCurChar); |
| |
| void ResetContextCharStyles(); |
| void EndBreak_SplitLine(CFX_BreakLine* pNextLine, bool bAllChars); |
| void EndBreak_BidiLine(std::deque<FX_TPO>* tpos, CFX_BreakType dwStatus); |
| void EndBreak_Alignment(const std::deque<FX_TPO>& tpos, |
| bool bAllChars, |
| CFX_BreakType dwStatus); |
| int32_t GetBreakPos(std::vector<CFX_Char>* pChars, |
| bool bAllChars, |
| bool bOnlyBrk, |
| int32_t* pEndPos); |
| void SplitTextLine(CFX_BreakLine* pCurLine, |
| CFX_BreakLine* pNextLine, |
| bool bAllChars); |
| |
| int32_t m_iAlignment; |
| int32_t m_iCombWidth; |
| }; |
| |
| #endif // XFA_FGAS_LAYOUT_CFX_TXTBREAK_H_ |