| // 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 ~IXFA_TextProvider() {} |
| 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_pParentStyle(nullptr), |
| m_ppMatchedDecls(nullptr), |
| m_dwMatchedDecls(0), |
| m_eDisplay(FDE_CSSDISPLAY_None) {} |
| ~CXFA_TextParseContext() { |
| if (m_pParentStyle) |
| m_pParentStyle->Release(); |
| FX_Free(m_ppMatchedDecls); |
| } |
| void SetDisplay(FDE_CSSDISPLAY eDisplay) { m_eDisplay = eDisplay; } |
| FDE_CSSDISPLAY GetDisplay() const { return m_eDisplay; } |
| void SetDecls(const IFDE_CSSDeclaration** ppDeclArray, int32_t 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; } |
| |
| int32_t GetVAlgin(IXFA_TextProvider* pTextProvider) const; |
| FX_FLOAT GetTabInterval(IFDE_CSSComputedStyle* pStyle) const; |
| int32_t 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; |
| int32_t GetHorScale(IXFA_TextProvider* pTextProvider, |
| IFDE_CSSComputedStyle* pStyle, |
| IFDE_XMLNode* pXMLNode) const; |
| int32_t GetVerScale(IXFA_TextProvider* pTextProvider, |
| IFDE_CSSComputedStyle* pStyle) const; |
| void GetUnderline(IXFA_TextProvider* pTextProvider, |
| IFDE_CSSComputedStyle* pStyle, |
| int32_t& iUnderline, |
| int32_t& iPeriod) const; |
| void GetLinethrough(IXFA_TextProvider* pTextProvider, |
| IFDE_CSSComputedStyle* pStyle, |
| int32_t& 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; |
| int32_t m_iChar; |
| int32_t m_iLines; |
| int32_t 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_WCHAR* 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: |
| const FX_WCHAR* 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_pLinkData(nullptr), |
| m_pAllocator(pAllocator), |
| m_dwRefCount(0) { |
| FXSYS_assert(m_pAllocator); |
| if (m_pStyle) |
| m_pStyle->AddRef(); |
| } |
| CXFA_TextUserData(IFX_MEMAllocator* pAllocator, |
| IFDE_CSSComputedStyle* pStyle, |
| CXFA_LinkUserData* pLinkData) |
| : m_pStyle(pStyle), |
| m_pLinkData(pLinkData), |
| m_pAllocator(pAllocator), |
| m_dwRefCount(0) { |
| FXSYS_assert(m_pAllocator); |
| if (m_pStyle) |
| m_pStyle->AddRef(); |
| } |
| ~CXFA_TextUserData() { |
| if (m_pStyle) |
| m_pStyle->Release(); |
| if (m_pLinkData) |
| 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_WCHAR* pszText; |
| int32_t iChars; |
| int32_t* pWidths; |
| int32_t iHorScale; |
| int32_t iVerScale; |
| int32_t iBidiLevel; |
| int32_t iUnderline; |
| int32_t iPeriod; |
| int32_t 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) { |
| int32_t 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; |
| int32_t m_iTabCount; |
| int32_t 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(); |
| int32_t GetText(CFX_WideString& wsText); |
| FX_FLOAT GetLayoutHeight(); |
| FX_FLOAT StartLayout(FX_FLOAT fWidth = -1); |
| FX_BOOL DoLayout(int32_t 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, int32_t iBlockIndex); |
| FX_BOOL DrawString(CFX_RenderDevice* pFxDevice, |
| const CFX_Matrix& tmDoc2Device, |
| const CFX_RectF& rtClip, |
| int32_t iBlock = 0); |
| FX_BOOL IsLoaded() const { return m_pieceLines.GetSize() > 0; } |
| void Unload(); |
| const CXFA_PieceLineArray* GetPieceLines(); |
| |
| FX_BOOL m_bHasBlock; |
| CFX_Int32Array m_Blocks; |
| |
| 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, |
| int32_t 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, |
| int32_t iPiece, |
| FXTEXT_CHARPOS* pCharPos, |
| const CFX_Matrix& tmDoc2Device); |
| void RenderPath(IFDE_RenderDevice* pDevice, |
| IFDE_Pen* pPen, |
| CXFA_PieceLine* pPieceLine, |
| int32_t iPiece, |
| FXTEXT_CHARPOS* pCharPos, |
| const CFX_Matrix& tmDoc2Device); |
| int32_t 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(int32_t iBlock); |
| int32_t CountBlocks() const; |
| |
| IXFA_TextProvider* m_pTextProvider; |
| CXFA_Node* m_pTextDataNode; |
| FX_BOOL m_bRichText; |
| IFX_MEMAllocator* m_pAllocator; |
| IFX_RTFBreak* m_pBreak; |
| CXFA_LoaderContext* m_pLoader; |
| int32_t m_iLines; |
| FX_FLOAT m_fMaxWidth; |
| CXFA_TextParser m_textParser; |
| CXFA_PieceLineArray m_pieceLines; |
| CXFA_TextTabstopsContext* m_pTabstopContext; |
| FX_BOOL m_bBlockContinue; |
| }; |
| #endif |
