| // Copyright 2017 The PDFium Authors |
| // 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_TEXTPARSER_H_ |
| #define XFA_FXFA_CXFA_TEXTPARSER_H_ |
| |
| #include <stdint.h> |
| |
| #include <map> |
| #include <memory> |
| #include <vector> |
| |
| #include "core/fxcrt/css/cfx_css.h" |
| #include "core/fxcrt/css/cfx_csscomputedstyle.h" |
| #include "core/fxcrt/css/cfx_cssdeclaration.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/widestring.h" |
| #include "core/fxge/dib/fx_dib.h" |
| #include "fxjs/gc/heap.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| #include "v8/include/cppgc/garbage-collected.h" |
| #include "xfa/fxfa/fxfa_basic.h" |
| |
| class CFGAS_GEFont; |
| class CFX_CSSStyleSelector; |
| class CFX_CSSStyleSheet; |
| class CFX_XMLNode; |
| class CXFA_FFDoc; |
| class CXFA_TextProvider; |
| class CXFA_TextTabstopsContext; |
| |
| class CXFA_TextParser : public cppgc::GarbageCollected<CXFA_TextParser> { |
| public: |
| class Context { |
| public: |
| Context(); |
| ~Context(); |
| |
| void SetParentStyle(RetainPtr<const CFX_CSSComputedStyle> style); |
| RetainPtr<const CFX_CSSComputedStyle> GetParentStyle() const { |
| return m_pParentStyle; |
| } |
| |
| void SetDisplay(CFX_CSSDisplay eDisplay) { m_eDisplay = eDisplay; } |
| CFX_CSSDisplay GetDisplay() const { return m_eDisplay; } |
| |
| void SetDecls(std::vector<const CFX_CSSDeclaration*>&& decl); |
| const std::vector<const CFX_CSSDeclaration*>& GetDecls() const { |
| return decls_; |
| } |
| |
| private: |
| RetainPtr<const CFX_CSSComputedStyle> m_pParentStyle; |
| CFX_CSSDisplay m_eDisplay = CFX_CSSDisplay::None; |
| std::vector<const CFX_CSSDeclaration*> decls_; |
| }; |
| |
| CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED; |
| virtual ~CXFA_TextParser(); |
| |
| void Trace(cppgc::Visitor* visitor) const {} |
| |
| void Reset(); |
| void DoParse(const CFX_XMLNode* pXMLContainer, |
| CXFA_TextProvider* pTextProvider); |
| |
| RetainPtr<CFX_CSSComputedStyle> CreateRootStyle( |
| CXFA_TextProvider* pTextProvider); |
| RetainPtr<CFX_CSSComputedStyle> ComputeStyle( |
| const CFX_XMLNode* pXMLNode, |
| RetainPtr<const CFX_CSSComputedStyle> pParentStyle); |
| |
| bool IsParsed() const { return m_bParsed; } |
| |
| XFA_AttributeValue GetVAlign(CXFA_TextProvider* pTextProvider) const; |
| |
| float GetTabInterval(const CFX_CSSComputedStyle* pStyle) const; |
| int32_t CountTabs(const CFX_CSSComputedStyle* pStyle) const; |
| |
| bool IsSpaceRun(const CFX_CSSComputedStyle* pStyle) const; |
| bool GetTabstops(const CFX_CSSComputedStyle* pStyle, |
| CXFA_TextTabstopsContext* pTabstopContext); |
| |
| RetainPtr<CFGAS_GEFont> GetFont(CXFA_FFDoc* doc, |
| CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| float GetFontSize(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| int32_t GetHorScale(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle, |
| const CFX_XMLNode* pXMLNode) const; |
| int32_t GetVerScale(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| int32_t GetUnderline(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| XFA_AttributeValue GetUnderlinePeriod( |
| CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| int32_t GetLinethrough(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| FX_ARGB GetColor(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| float GetBaseline(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle) const; |
| float GetLineHeight(CXFA_TextProvider* pTextProvider, |
| const CFX_CSSComputedStyle* pStyle, |
| bool bFirst, |
| float fVerScale) const; |
| |
| absl::optional<WideString> GetEmbeddedObj( |
| const CXFA_TextProvider* pTextProvider, |
| const CFX_XMLNode* pXMLNode); |
| Context* GetParseContextFromMap(const CFX_XMLNode* pXMLNode); |
| |
| protected: |
| CXFA_TextParser(); |
| |
| bool TagValidate(const WideString& str) const; |
| |
| private: |
| class TagProvider { |
| public: |
| TagProvider(); |
| ~TagProvider(); |
| |
| WideString GetTagName() { return m_wsTagName; } |
| |
| void SetTagName(const WideString& wsName) { m_wsTagName = wsName; } |
| void SetAttribute(const WideString& wsAttr, const WideString& wsValue) { |
| m_Attributes.insert({wsAttr, wsValue}); |
| } |
| |
| WideString GetAttribute(const WideString& wsAttr) { |
| return m_Attributes[wsAttr]; |
| } |
| |
| bool m_bTagAvailable = false; |
| bool m_bContent = false; |
| |
| private: |
| WideString m_wsTagName; |
| std::map<WideString, WideString> m_Attributes; |
| }; |
| |
| // static |
| std::unique_ptr<TagProvider> ParseTagInfo(const CFX_XMLNode* pXMLNode); |
| |
| void InitCSSData(CXFA_TextProvider* pTextProvider); |
| void ParseRichText(const CFX_XMLNode* pXMLNode, |
| const CFX_CSSComputedStyle* pParentStyle); |
| std::unique_ptr<CFX_CSSStyleSheet> LoadDefaultSheetStyle(); |
| RetainPtr<CFX_CSSComputedStyle> CreateStyle( |
| const CFX_CSSComputedStyle* pParentStyle); |
| |
| bool m_bParsed = false; |
| bool m_cssInitialized = false; |
| std::unique_ptr<CFX_CSSStyleSelector> m_pSelector; |
| std::map<const CFX_XMLNode*, std::unique_ptr<Context>> |
| m_mapXMLNodeToParseContext; |
| }; |
| |
| #endif // XFA_FXFA_CXFA_TEXTPARSER_H_ |