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// Copyright 2017 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_FXFA_CXFA_TEXTLAYOUT_H_
#define XFA_FXFA_CXFA_TEXTLAYOUT_H_
#include <memory>
#include <vector>
#include "core/fxcrt/cfx_char.h"
#include "core/fxcrt/css/cfx_css.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_string.h"
#include "xfa/fxfa/cxfa_textparser.h"
class CFDE_RenderDevice;
class CFX_CSSComputedStyle;
class CFX_RTFBreak;
class CFX_RenderDevice;
class CFX_XMLNode;
class CXFA_LinkUserData;
class CXFA_Node;
class CXFA_PieceLine;
class CXFA_TextPiece;
class CXFA_TextProvider;
class CXFA_TextTabstopsContext;
class FXTEXT_CHARPOS;
struct CXFA_LoaderContext;
struct FX_RTFTEXTOBJ;
class CXFA_TextLayout {
public:
explicit CXFA_TextLayout(CXFA_FFDoc* doc, CXFA_TextProvider* pTextProvider);
~CXFA_TextLayout();
float GetLayoutHeight();
float StartLayout(float fWidth);
float DoLayout(int32_t iBlockIndex,
float fCalcHeight,
float fContentAreaHeight,
float fTextHeight);
float Layout(const CFX_SizeF& size);
CFX_SizeF CalcSize(const CFX_SizeF& minSize, const CFX_SizeF& maxSize);
void ItemBlocks(const CFX_RectF& rtText, int32_t iBlockIndex);
bool DrawString(CFX_RenderDevice* pFxDevice,
const CFX_Matrix& tmDoc2Device,
const CFX_RectF& rtClip,
int32_t iBlock);
bool IsLoaded() const { return !m_pieceLines.empty(); }
void Unload();
const std::vector<std::unique_ptr<CXFA_PieceLine>>* GetPieceLines() const {
return &m_pieceLines;
}
bool m_bHasBlock = false;
std::vector<int32_t> m_Blocks;
private:
void GetTextDataNode();
CFX_XMLNode* GetXMLContainerNode();
std::unique_ptr<CFX_RTFBreak> CreateBreak(bool bDefault);
void InitBreak(float fLineWidth);
void InitBreak(CFX_CSSComputedStyle* pStyle,
CFX_CSSDisplay eDisplay,
float fLineWidth,
const CFX_XMLNode* pXMLNode,
CFX_CSSComputedStyle* pParentStyle);
void Loader(float textWidth, float* pLinePos, bool bSavePieces);
void LoadText(CXFA_Node* pNode,
float textWidth,
float* pLinePos,
bool bSavePieces);
bool LoadRichText(const CFX_XMLNode* pXMLNode,
float textWidth,
float* pLinePos,
const RetainPtr<CFX_CSSComputedStyle>& pParentStyle,
bool bSavePieces,
RetainPtr<CXFA_LinkUserData> pLinkData,
bool bEndBreak,
bool bIsOl,
int32_t iLiCount);
bool AppendChar(const WideString& wsText,
float* pLinePos,
float fSpaceAbove,
bool bSavePieces);
void AppendTextLine(CFX_BreakType dwStatus,
float* pLinePos,
bool bSavePieces,
bool bEndBreak);
void EndBreak(CFX_BreakType dwStatus, float* pLinePos, bool bDefault);
bool IsEnd(bool bSavePieces);
void UpdateAlign(float fHeight, float fBottom);
void RenderString(CFX_RenderDevice* pDevice,
CXFA_PieceLine* pPieceLine,
int32_t iPiece,
FXTEXT_CHARPOS* pCharPos,
const CFX_Matrix& tmDoc2Device);
void RenderPath(CFX_RenderDevice* pDevice,
CXFA_PieceLine* pPieceLine,
int32_t iPiece,
FXTEXT_CHARPOS* pCharPos,
const CFX_Matrix& tmDoc2Device);
int32_t GetDisplayPos(const CXFA_TextPiece* pPiece, FXTEXT_CHARPOS* pCharPos);
bool ToRun(const CXFA_TextPiece* pPiece, FX_RTFTEXTOBJ* tr);
void DoTabstops(CFX_CSSComputedStyle* pStyle, CXFA_PieceLine* pPieceLine);
bool Layout(int32_t iBlock);
int32_t CountBlocks() const;
bool m_bRichText = false;
bool m_bBlockContinue = true;
int32_t m_iLines = 0;
float m_fMaxWidth = 0;
UnownedPtr<CXFA_FFDoc> const m_pDoc;
CXFA_TextProvider* const m_pTextProvider; // Raw, owned by tree node.
CXFA_Node* m_pTextDataNode = nullptr; // Raw, owned by tree node.
std::unique_ptr<CFX_RTFBreak> m_pBreak;
std::unique_ptr<CXFA_LoaderContext> m_pLoader;
CXFA_TextParser m_textParser;
std::vector<std::unique_ptr<CXFA_PieceLine>> m_pieceLines;
std::unique_ptr<CXFA_TextTabstopsContext> m_pTabstopContext;
};
#endif // XFA_FXFA_CXFA_TEXTLAYOUT_H_
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