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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/css/cfx_css.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_string.h"
#include "xfa/fgas/layout/cfx_rtfbreak.h"
#include "xfa/fxfa/cxfa_textparser.h"
class CFX_CSSComputedStyle;
class CFDE_RenderDevice;
class CFX_XMLNode;
class CFX_RTFBreak;
class CXFA_LoaderContext;
class CXFA_LinkUserData;
class CXFA_Node;
class CXFA_PieceLine;
class CXFA_TextProvider;
class CXFA_TextTabstopsContext;
class CXFA_TextPiece;
class CXFA_TextLayout {
public:
explicit CXFA_TextLayout(CXFA_TextProvider* pTextProvider);
~CXFA_TextLayout();
float GetLayoutHeight();
float StartLayout(float fWidth = -1);
bool DoLayout(int32_t iBlockIndex,
float& fCalcHeight,
float fContentAreaHeight = -1,
float fTextHeight = -1);
bool CalcSize(const CFX_SizeF& minSize,
const CFX_SizeF& maxSize,
CFX_SizeF& defaultSize);
bool Layout(const CFX_SizeF& size, float* fHeight = nullptr);
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 = 0);
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;
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,
CFX_XMLNode* pXMLNode,
CFX_CSSComputedStyle* pParentStyle = nullptr);
bool Loader(const CFX_SizeF& szText,
float& fLinePos,
bool bSavePieces = true);
void LoadText(CXFA_Node* pNode,
const CFX_SizeF& szText,
float& fLinePos,
bool bSavePieces);
bool LoadRichText(CFX_XMLNode* pXMLNode,
const CFX_SizeF& szText,
float& fLinePos,
const RetainPtr<CFX_CSSComputedStyle>& pParentStyle,
bool bSavePieces,
RetainPtr<CXFA_LinkUserData> pLinkData,
bool bEndBreak = true,
bool bIsOl = false,
int32_t iLiCount = 0);
bool AppendChar(const WideString& wsText,
float& fLinePos,
float fSpaceAbove,
bool bSavePieces);
void AppendTextLine(CFX_BreakType dwStatus,
float& fLinePos,
bool bSavePieces,
bool bEndBreak = false);
void EndBreak(CFX_BreakType dwStatus, float& fLinePos, bool bDefault);
bool IsEnd(bool bSavePieces);
void ProcessText(WideString& wsText);
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 bCharCode = false);
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;
CXFA_TextProvider* m_pTextProvider;
CXFA_Node* m_pTextDataNode;
bool m_bRichText;
std::unique_ptr<CFX_RTFBreak> m_pBreak;
std::unique_ptr<CXFA_LoaderContext> m_pLoader;
int32_t m_iLines;
float m_fMaxWidth;
CXFA_TextParser m_textParser;
std::vector<std::unique_ptr<CXFA_PieceLine>> m_pieceLines;
std::unique_ptr<CXFA_TextTabstopsContext> m_pTabstopContext;
bool m_bBlockContinue;
};
#endif // XFA_FXFA_CXFA_TEXTLAYOUT_H_
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