| // Copyright 2014 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_FDE_CFDE_TEXTOUT_H_ |
| #define XFA_FDE_CFDE_TEXTOUT_H_ |
| |
| #include <deque> |
| #include <memory> |
| #include <vector> |
| |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/widestring.h" |
| #include "core/fxge/dib/fx_dib.h" |
| #include "third_party/base/span.h" |
| #include "xfa/fde/cfde_data.h" |
| #include "xfa/fgas/layout/cfgas_break.h" |
| #include "xfa/fgas/layout/cfgas_char.h" |
| |
| class CFGAS_GEFont; |
| class CFGAS_TxtBreak; |
| class CFX_RenderDevice; |
| class TextCharPos; |
| |
| class CFDE_TextOut { |
| public: |
| static bool DrawString(CFX_RenderDevice* device, |
| FX_ARGB color, |
| const RetainPtr<CFGAS_GEFont>& pFont, |
| pdfium::span<TextCharPos> pCharPos, |
| float fFontSize, |
| const CFX_Matrix& matrix); |
| |
| CFDE_TextOut(); |
| ~CFDE_TextOut(); |
| |
| void SetFont(RetainPtr<CFGAS_GEFont> pFont); |
| void SetFontSize(float fFontSize); |
| void SetTextColor(FX_ARGB color) { m_TxtColor = color; } |
| void SetStyles(const FDE_TextStyle& dwStyles); |
| void SetAlignment(FDE_TextAlignment iAlignment); |
| void SetLineSpace(float fLineSpace); |
| void SetMatrix(const CFX_Matrix& matrix) { m_Matrix = matrix; } |
| void SetLineBreakTolerance(float fTolerance); |
| |
| void CalcLogicSize(WideStringView str, CFX_SizeF* pSize); |
| void CalcLogicSize(WideStringView str, CFX_RectF* pRect); |
| void DrawLogicText(CFX_RenderDevice* device, |
| const WideString& str, |
| const CFX_RectF& rect); |
| int32_t GetTotalLines() const { return m_iTotalLines; } |
| |
| private: |
| struct Piece { |
| Piece(); |
| Piece(const Piece& that); |
| ~Piece(); |
| |
| size_t start_char = 0; |
| size_t char_count = 0; |
| uint32_t char_styles = 0; |
| CFX_RectF bounds; |
| }; |
| |
| class Line { |
| public: |
| Line(); |
| Line(const Line& that); |
| ~Line(); |
| |
| bool new_reload() const { return new_reload_; } |
| void set_new_reload(bool reload) { new_reload_ = reload; } |
| |
| size_t AddPiece(size_t index, const Piece& piece); |
| size_t GetSize() const; |
| const Piece* GetPieceAtIndex(size_t index) const; |
| Piece* GetPieceAtIndex(size_t index); |
| void RemoveLast(size_t count); |
| |
| private: |
| bool new_reload_ = false; |
| std::deque<Piece> pieces_; |
| }; |
| |
| bool RetrieveLineWidth(CFGAS_Char::BreakType dwBreakStatus, |
| float* pStartPos, |
| float* pWidth, |
| float* pHeight); |
| void LoadText(const WideString& str, const CFX_RectF& rect); |
| |
| void Reload(const CFX_RectF& rect); |
| void ReloadLinePiece(Line* pLine, const CFX_RectF& rect); |
| bool RetrievePieces(CFGAS_Char::BreakType dwBreakStatus, |
| bool bReload, |
| const CFX_RectF& rect, |
| size_t* pStartChar, |
| int32_t* pPieceWidths); |
| void AppendPiece(const Piece& piece, bool bNeedReload, bool bEnd); |
| void DoAlignment(const CFX_RectF& rect); |
| size_t GetDisplayPos(const Piece* pPiece); |
| |
| std::unique_ptr<CFGAS_TxtBreak> const m_pTxtBreak; |
| RetainPtr<CFGAS_GEFont> m_pFont; |
| float m_fFontSize = 12.0f; |
| float m_fLineSpace = 12.0f; |
| float m_fLinePos = 0.0f; |
| float m_fTolerance = 0.0f; |
| FDE_TextAlignment m_iAlignment = FDE_TextAlignment::kTopLeft; |
| FDE_TextStyle m_Styles; |
| std::vector<int32_t> m_CharWidths; |
| FX_ARGB m_TxtColor = 0xFF000000; |
| Mask<CFGAS_Break::LayoutStyle> m_dwTxtBkStyles; |
| WideString m_wsText; |
| CFX_Matrix m_Matrix; |
| std::deque<Line> m_ttoLines; |
| size_t m_iCurLine = 0; |
| size_t m_iCurPiece = 0; |
| int32_t m_iTotalLines = 0; |
| std::vector<TextCharPos> m_CharPos; |
| }; |
| |
| #endif // XFA_FDE_CFDE_TEXTOUT_H_ |