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121 lines
3.7 KiB
121 lines
3.7 KiB
4 months ago
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// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef XFA_FDE_CFDE_TEXTOUT_H_
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#define XFA_FDE_CFDE_TEXTOUT_H_
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#include <deque>
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#include <memory>
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#include <vector>
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#include "core/fxge/fx_dib.h"
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#include "third_party/base/span.h"
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#include "xfa/fde/cfde_data.h"
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#include "xfa/fgas/layout/cfx_char.h"
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class CFDE_RenderDevice;
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class CFGAS_GEFont;
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class CFX_RenderDevice;
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class CFX_TxtBreak;
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class TextCharPos;
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struct FDE_TTOPIECE {
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FDE_TTOPIECE();
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FDE_TTOPIECE(const FDE_TTOPIECE& that);
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~FDE_TTOPIECE();
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int32_t iStartChar;
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int32_t iChars;
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uint32_t dwCharStyles;
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CFX_RectF rtPiece;
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};
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class CFDE_TextOut {
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public:
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static bool DrawString(CFX_RenderDevice* device,
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FX_ARGB color,
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const RetainPtr<CFGAS_GEFont>& pFont,
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pdfium::span<TextCharPos> pCharPos,
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float fFontSize,
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const CFX_Matrix& matrix);
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CFDE_TextOut();
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~CFDE_TextOut();
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void SetFont(const RetainPtr<CFGAS_GEFont>& pFont);
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void SetFontSize(float fFontSize);
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void SetTextColor(FX_ARGB color) { m_TxtColor = color; }
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void SetStyles(const FDE_TextStyle& dwStyles);
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void SetAlignment(FDE_TextAlignment iAlignment);
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void SetLineSpace(float fLineSpace);
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void SetMatrix(const CFX_Matrix& matrix) { m_Matrix = matrix; }
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void SetLineBreakTolerance(float fTolerance);
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void CalcLogicSize(WideStringView str, CFX_SizeF* pSize);
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void CalcLogicSize(WideStringView str, CFX_RectF* pRect);
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void DrawLogicText(CFX_RenderDevice* device,
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WideStringView str,
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const CFX_RectF& rect);
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int32_t GetTotalLines() const { return m_iTotalLines; }
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private:
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class CFDE_TTOLine {
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public:
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CFDE_TTOLine();
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CFDE_TTOLine(const CFDE_TTOLine& ttoLine);
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~CFDE_TTOLine();
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bool GetNewReload() const { return m_bNewReload; }
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void SetNewReload(bool reload) { m_bNewReload = reload; }
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int32_t AddPiece(int32_t index, const FDE_TTOPIECE& ttoPiece);
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int32_t GetSize() const;
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FDE_TTOPIECE* GetPtrAt(int32_t index);
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void RemoveLast(int32_t iCount);
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private:
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bool m_bNewReload;
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std::deque<FDE_TTOPIECE> m_pieces;
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};
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bool RetrieveLineWidth(CFX_BreakType dwBreakStatus,
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float* pStartPos,
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float* pWidth,
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float* pHeight);
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void LoadText(const WideString& str, const CFX_RectF& rect);
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void Reload(const CFX_RectF& rect);
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void ReloadLinePiece(CFDE_TTOLine* pLine, const CFX_RectF& rect);
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bool RetrievePieces(CFX_BreakType dwBreakStatus,
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bool bReload,
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const CFX_RectF& rect,
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int32_t* pStartChar,
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int32_t* pPieceWidths);
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void AppendPiece(const FDE_TTOPIECE& ttoPiece, bool bNeedReload, bool bEnd);
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void DoAlignment(const CFX_RectF& rect);
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size_t GetDisplayPos(FDE_TTOPIECE* pPiece);
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std::unique_ptr<CFX_TxtBreak> const m_pTxtBreak;
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RetainPtr<CFGAS_GEFont> m_pFont;
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float m_fFontSize = 12.0f;
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float m_fLineSpace = 12.0f;
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float m_fLinePos = 0.0f;
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float m_fTolerance = 0.0f;
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FDE_TextAlignment m_iAlignment = FDE_TextAlignment::kTopLeft;
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FDE_TextStyle m_Styles;
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std::vector<int32_t> m_CharWidths;
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FX_ARGB m_TxtColor = 0xFF000000;
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uint32_t m_dwTxtBkStyles = 0;
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WideString m_wsText;
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CFX_Matrix m_Matrix;
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std::deque<CFDE_TTOLine> m_ttoLines;
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int32_t m_iCurLine = 0;
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int32_t m_iCurPiece = 0;
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int32_t m_iTotalLines = 0;
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std::vector<TextCharPos> m_CharPos;
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};
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#endif // XFA_FDE_CFDE_TEXTOUT_H_
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