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// 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 _FXFA_TEXTLAYOUT_H
#define _FXFA_TEXTLAYOUT_H
#define XFA_LOADERCNTXTFLG_FILTERSPACE 0x001
class CXFA_TextTabstopsContext;
class IXFA_TextProvider
{
public:
virtual CXFA_Node* GetTextNode(FX_BOOL &bRichText) = 0;
virtual CXFA_Para GetParaNode() = 0;
virtual CXFA_Font GetFontNode() = 0;
virtual FX_BOOL IsCheckButtonAndAutoWidth() = 0;
virtual CXFA_FFDoc* GetDocNode() = 0;
virtual FX_BOOL GetEmbbedObj(FX_BOOL bURI, FX_BOOL bRaw, const CFX_WideString &wsAttr, CFX_WideString &wsValue) = 0;
};
class CXFA_CSSTagProvider : public IFDE_CSSTagProvider
{
public:
CXFA_CSSTagProvider ()
: m_bTagAviliable(FALSE),
m_bContent(FALSE)
{}
virtual ~CXFA_CSSTagProvider();
virtual CFX_WideStringC GetTagName()
{
return m_wsTagName;
}
virtual FX_POSITION GetFirstAttribute()
{
return m_Attributes.GetStartPosition();
}
virtual void GetNextAttribute(FX_POSITION &pos, CFX_WideStringC &wsAttr, CFX_WideStringC &wsValue);
void SetTagNameObj(const CFX_WideString &wsName)
{
m_wsTagName = wsName;
}
void SetAttribute(const CFX_WideString &wsAttr, const CFX_WideString &wsValue);
FX_BOOL m_bTagAviliable;
FX_BOOL m_bContent;
protected:
CFX_WideString m_wsTagName;
CFX_MapPtrToPtr m_Attributes;
};
class CXFA_TextParseContext : public CFX_Target
{
public:
CXFA_TextParseContext() : m_ppMatchedDecls(NULL), m_dwMatchedDecls(0), m_eDisplay(FDE_CSSDISPLAY_None), m_pParentStyle(NULL) {}
~CXFA_TextParseContext()
{
if (m_ppMatchedDecls != NULL) {
FDE_Free(m_ppMatchedDecls);
}
}
void SetDisplay(FDE_CSSDISPLAY eDisplay)
{
m_eDisplay = eDisplay;
}
FDE_CSSDISPLAY GetDisplay() const
{
return m_eDisplay;
}
void SetDecls(const IFDE_CSSDeclaration **ppDeclArray, FX_INT32 iDeclCount);
const IFDE_CSSDeclaration** GetDecls()
{
return (const IFDE_CSSDeclaration**)m_ppMatchedDecls;
}
FX_DWORD CountDecls() const
{
return m_dwMatchedDecls;
}
IFDE_CSSComputedStyle * m_pParentStyle;
protected:
IFDE_CSSDeclaration **m_ppMatchedDecls;
FX_DWORD m_dwMatchedDecls : 28;
FDE_CSSDISPLAY m_eDisplay : 4;
};
class CXFA_TextParser
{
public:
CXFA_TextParser() : m_pAllocator(NULL), m_pSelector(NULL), m_pUASheet(NULL) {}
virtual ~CXFA_TextParser();
void Reset();
void DoParse(IFDE_XMLNode *pXMLContainer, IXFA_TextProvider *pTextProvider);
IFDE_CSSComputedStyle* CreateRootStyle(IXFA_TextProvider *pTextProvider);
IFDE_CSSComputedStyle* ComputeStyle(IFDE_XMLNode *pXMLNode, IFDE_CSSComputedStyle *pParentStyle);
FX_BOOL IsParsed() const
{
return m_pAllocator != NULL;
}
FX_INT32 GetVAlgin(IXFA_TextProvider *pTextProvider) const;
FX_FLOAT GetTabInterval(IFDE_CSSComputedStyle *pStyle) const;
FX_INT32 CountTabs(IFDE_CSSComputedStyle *pStyle) const;
FX_BOOL IsSpaceRun(IFDE_CSSComputedStyle *pStyle) const;
FX_BOOL GetTabstops(IFDE_CSSComputedStyle *pStyle, CXFA_TextTabstopsContext *pTabstopContext);
IFX_Font* GetFont(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle) const;
FX_FLOAT GetFontSize(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle) const;
FX_INT32 GetHorScale(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle, IFDE_XMLNode *pXMLNode) const;
FX_INT32 GetVerScale(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle) const;
void GetUnderline(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle, FX_INT32 &iUnderline, FX_INT32 &iPeriod) const;
void GetLinethrough(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle, FX_INT32 &iLinethrough) const;
FX_ARGB GetColor(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle) const;
FX_FLOAT GetBaseline(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle) const;
FX_FLOAT GetLineHeight(IXFA_TextProvider *pTextProvider, IFDE_CSSComputedStyle *pStyle, FX_BOOL bFirst, FX_FLOAT fVerScale) const;
FX_BOOL GetEmbbedObj(IXFA_TextProvider *pTextProvider, IFDE_XMLNode *pXMLNode, CFX_WideString &wsValue);
CXFA_TextParseContext* GetParseContextFromMap(IFDE_XMLNode *pXMLNode);
private:
void InitCSSData(IXFA_TextProvider *pTextProvider);
void ParseRichText(IFDE_XMLNode *pXMLNode, IFDE_CSSComputedStyle *pParentStyle);
void ParseTagInfo(IFDE_XMLNode *pXMLNode, CXFA_CSSTagProvider &tagProvider);
IFDE_CSSStyleSheet* LoadDefaultSheetStyle();
IFDE_CSSComputedStyle* CreateStyle(IFDE_CSSComputedStyle *pParentStyle);
IFX_MEMAllocator *m_pAllocator;
IFDE_CSSStyleSelector *m_pSelector;
IFDE_CSSStyleSheet *m_pUASheet;
CFX_MapPtrTemplate<IFDE_XMLNode*, CXFA_TextParseContext*> m_mapXMLNodeToParseContext;
};
class CXFA_LoaderContext
{
public:
CXFA_LoaderContext() : m_bSaveLineHeight(FALSE)
, m_fWidth(0)
, m_fHeight(0)
, m_fLastPos(0)
, m_fStartLineOffset(0)
, m_iChar(0)
, m_iTotalLines(-1)
, m_pXMLNode(NULL)
, m_pNode(NULL)
, m_pParentStyle(NULL)
, m_dwFlags(0)
{}
FX_BOOL m_bSaveLineHeight;
FX_FLOAT m_fWidth;
FX_FLOAT m_fHeight;
FX_FLOAT m_fLastPos;
FX_FLOAT m_fStartLineOffset;
FX_INT32 m_iChar;
FX_INT32 m_iLines;
FX_INT32 m_iTotalLines;
IFDE_XMLNode *m_pXMLNode;
CXFA_Node *m_pNode;
IFDE_CSSComputedStyle *m_pParentStyle;
CFX_ArrayTemplate<FX_FLOAT> m_lineHeights;
FX_DWORD m_dwFlags;
CFX_FloatArray m_BlocksHeight;
};
class CXFA_LinkUserData : public IFX_Unknown, public CFX_Target
{
public:
CXFA_LinkUserData(IFX_MEMAllocator *pAllocator, FX_LPWSTR pszText)
: m_pAllocator(pAllocator)
, m_dwRefCount(1)
{
m_pszURLContent = pszText;
}
~CXFA_LinkUserData() { }
virtual FX_DWORD Release()
{
FX_DWORD dwRefCount = --m_dwRefCount;
if (dwRefCount <= 0) {
FDE_DeleteWith(CXFA_LinkUserData, m_pAllocator, this);
}
return dwRefCount;
}
virtual FX_DWORD AddRef()
{
return ++m_dwRefCount;
}
public:
FX_LPCWSTR GetLinkURL()
{
return m_pszURLContent;
};
protected:
IFX_MEMAllocator *m_pAllocator;
FX_DWORD m_dwRefCount;
CFX_WideString m_pszURLContent;
};
class CXFA_TextUserData : public IFX_Unknown, public CFX_Target
{
public:
CXFA_TextUserData(IFX_MEMAllocator *pAllocator, IFDE_CSSComputedStyle *pStyle)
: m_pStyle(pStyle)
, m_pAllocator(pAllocator)
, m_dwRefCount(0)
, m_pLinkData(NULL)
{
FXSYS_assert(m_pAllocator != NULL);
if (m_pStyle != NULL) {
m_pStyle->AddRef();
}
}
CXFA_TextUserData(IFX_MEMAllocator *pAllocator, IFDE_CSSComputedStyle *pStyle, CXFA_LinkUserData* pLinkData)
: m_pStyle(pStyle)
, m_pAllocator(pAllocator)
, m_dwRefCount(0)
, m_pLinkData(pLinkData)
{
FXSYS_assert(m_pAllocator != NULL);
if (m_pStyle != NULL) {
m_pStyle->AddRef();
}
}
~CXFA_TextUserData()
{
if (m_pStyle != NULL) {
m_pStyle->Release();
}
if (m_pLinkData != NULL) {
m_pLinkData->Release();
}
}
virtual FX_DWORD Release()
{
FX_DWORD dwRefCount = --m_dwRefCount;
if (dwRefCount == 0) {
FDE_DeleteWith(CXFA_TextUserData, m_pAllocator, this);
}
return dwRefCount;
}
virtual FX_DWORD AddRef()
{
return ++m_dwRefCount;
}
IFDE_CSSComputedStyle *m_pStyle;
CXFA_LinkUserData *m_pLinkData;
protected:
IFX_MEMAllocator *m_pAllocator;
FX_DWORD m_dwRefCount;
};
typedef struct _XFA_TEXTPIECE : public CFX_Target {
FX_LPWSTR pszText;
FX_INT32 iChars;
FX_INT32 *pWidths;
FX_INT32 iHorScale;
FX_INT32 iVerScale;
FX_INT32 iBidiLevel;
FX_INT32 iUnderline;
FX_INT32 iPeriod;
FX_INT32 iLineThrough;
IFX_Font *pFont;
FX_ARGB dwColor;
FX_FLOAT fFontSize;
CFX_RectF rtPiece;
CXFA_LinkUserData* pLinkData;
_XFA_TEXTPIECE() : pszText(NULL), pFont(NULL), pLinkData(NULL)
{
pszText = NULL;
}
~_XFA_TEXTPIECE()
{
pszText = NULL;
if (NULL != pLinkData) {
pLinkData->Release();
pLinkData = NULL;
}
}
} XFA_TEXTPIECE, * XFA_LPTEXTPIECE;
typedef XFA_TEXTPIECE const * XFA_LPCTEXTPIECE;
typedef CFX_ArrayTemplate<XFA_LPTEXTPIECE> CXFA_PieceArray;
class CXFA_PieceLine : public CFX_Target
{
public:
CXFA_PieceLine() {}
CXFA_PieceArray m_textPieces;
CFX_Int32Array m_charCounts;
};
typedef CFX_ArrayTemplate<CXFA_PieceLine*> CXFA_PieceLineArray;
struct XFA_TABSTOPS {
FX_DWORD dwAlign;
FX_FLOAT fTabstops;
};
class CXFA_TextTabstopsContext
{
public:
CXFA_TextTabstopsContext() : m_iTabCount(0), m_iTabIndex(-1), m_bTabstops(FALSE), m_fTabWidth(0), m_fLeft(0) {}
void Append(FX_DWORD dwAlign, FX_FLOAT fTabstops)
{
FX_INT32 i = 0;
for (i = 0; i < m_iTabCount; i++) {
XFA_TABSTOPS *pTabstop = m_tabstops.GetDataPtr(i);
if (fTabstops < pTabstop->fTabstops) {
break;
}
}
m_tabstops.InsertSpaceAt(i, 1);
XFA_TABSTOPS tabstop;
tabstop.dwAlign = dwAlign;
tabstop.fTabstops = fTabstops;
m_tabstops.SetAt(i, tabstop);
m_iTabCount++;
}
void RemoveAll()
{
m_tabstops.RemoveAll();
m_iTabCount = 0;
}
void Reset()
{
m_iTabIndex = -1;
m_bTabstops = FALSE;
m_fTabWidth = 0;
m_fLeft = 0;
}
CFX_ArrayTemplate<XFA_TABSTOPS> m_tabstops;
FX_INT32 m_iTabCount;
FX_INT32 m_iTabIndex;
FX_BOOL m_bTabstops;
FX_FLOAT m_fTabWidth;
FX_FLOAT m_fLeft;
};
class CXFA_TextLayout
{
public:
CXFA_TextLayout(IXFA_TextProvider *pTextProvider);
virtual ~CXFA_TextLayout();
FX_INT32 GetText(CFX_WideString &wsText);
FX_FLOAT GetLayoutHeight();
FX_FLOAT StartLayout(FX_FLOAT fWidth = -1);
FX_BOOL DoLayout(FX_INT32 iBlockIndex, FX_FLOAT &fCalcHeight, FX_FLOAT fContentAreaHeight = -1, FX_FLOAT fTextHeight = -1);
FX_BOOL CalcSize(const CFX_SizeF &minSize, const CFX_SizeF &maxSize, CFX_SizeF &defaultSize);
FX_BOOL Layout(const CFX_SizeF &size, FX_FLOAT* fHeight = NULL);
void ItemBlocks(const CFX_RectF& rtText, FX_INT32 iBlockIndex);
FX_BOOL DrawString(CFX_RenderDevice *pFxDevice, const CFX_Matrix &tmDoc2Device, const CFX_RectF &rtClip, FX_INT32 iBlock = 0);
FX_BOOL IsLoaded() const
{
return m_pieceLines.GetSize() > 0;
}
void Unload();
const CXFA_PieceLineArray* GetPieceLines();
private:
void GetTextDataNode();
IFDE_XMLNode* GetXMLContainerNode();
IFX_RTFBreak* CreateBreak(FX_BOOL bDefault);
void InitBreak(FX_FLOAT fLineWidth);
void InitBreak(IFDE_CSSComputedStyle *pStyle, FDE_CSSDISPLAY eDisplay, FX_FLOAT fLineWidth, IFDE_XMLNode *pXMLNode, IFDE_CSSComputedStyle *pParentStyle = NULL);
FX_BOOL Loader(const CFX_SizeF &szText, FX_FLOAT &fLinePos, FX_BOOL bSavePieces = TRUE);
void LoadText(CXFA_Node *pNode, const CFX_SizeF &szText, FX_FLOAT &fLinePos, FX_BOOL bSavePieces);
FX_BOOL LoadRichText(IFDE_XMLNode *pXMLNode, const CFX_SizeF &szText, FX_FLOAT &fLinePos, IFDE_CSSComputedStyle *pParentStyle, FX_BOOL bSavePieces, CXFA_LinkUserData* pLinkData = NULL, FX_BOOL bEndBreak = TRUE, FX_BOOL bIsOl = FALSE, FX_INT32 iLiCount = 0);
FX_BOOL AppendChar(const CFX_WideString &wsText, FX_FLOAT &fLinePos, FX_FLOAT fSpaceAbove, FX_BOOL bSavePieces);
void AppendTextLine(FX_DWORD dwStatus, FX_FLOAT &fLinePos, FX_BOOL bSavePieces, FX_BOOL bEndBreak = FALSE);
void EndBreak(FX_DWORD dwStatus, FX_FLOAT &fLinePos, FX_BOOL bDefault);
FX_BOOL IsEnd(FX_BOOL bSavePieces);
void ProcessText(CFX_WideString &wsText);
void UpdateAlign(FX_FLOAT fHeight, FX_FLOAT fBottom);
void RenderString(IFDE_RenderDevice *pDevice, IFDE_SolidBrush *pBrush, CXFA_PieceLine *pPieceLine,
FX_INT32 iPiece, FXTEXT_CHARPOS *pCharPos, const CFX_Matrix &tmDoc2Device);
void RenderPath(IFDE_RenderDevice *pDevice, IFDE_Pen *pPen, CXFA_PieceLine *pPieceLine, FX_INT32 iPiece,
FXTEXT_CHARPOS *pCharPos, const CFX_Matrix &tmDoc2Device);
FX_INT32 GetDisplayPos(XFA_LPCTEXTPIECE pPiece, FXTEXT_CHARPOS *pCharPos, FX_BOOL bCharCode = FALSE);
FX_BOOL ToRun(XFA_LPCTEXTPIECE pPiece, FX_RTFTEXTOBJ &tr);
void DoTabstops(IFDE_CSSComputedStyle *pStyle, CXFA_PieceLine *pPieceLine);
FX_BOOL Layout(FX_INT32 iBlock);
FX_INT32 CountBlocks() const;
IXFA_TextProvider *m_pTextProvider;
CXFA_Node *m_pTextDataNode;
FX_BOOL m_bRichText;
IFX_MEMAllocator *m_pAllocator;
IFX_RTFBreak *m_pBreak;
FX_DWORD m_dwTextData;
CXFA_LoaderContext *m_pLoader;
FX_INT32 m_iLines;
FX_FLOAT m_fMaxWidth;
CXFA_TextParser m_textParser;
CXFA_PieceLineArray m_pieceLines;
CXFA_TextTabstopsContext *m_pTabstopContext;
FX_BOOL m_bBlockContinue;
public:
FX_BOOL m_bHasBlock;
CFX_Int32Array m_Blocks;
};
#endif
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