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134 lines
4.4 KiB
134 lines
4.4 KiB
// Copyright 2017 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef XFA_FXFA_CXFA_TEXTPARSER_H_
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#define XFA_FXFA_CXFA_TEXTPARSER_H_
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#include <map>
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#include <memory>
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#include "core/fxcrt/fx_string.h"
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#include "core/fxcrt/fx_system.h"
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#include "core/fxcrt/retain_ptr.h"
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#include "core/fxge/fx_dib.h"
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#include "third_party/base/optional.h"
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#include "xfa/fxfa/fxfa_basic.h"
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class CFGAS_GEFont;
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class CFX_CSSComputedStyle;
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class CFX_CSSStyleSelector;
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class CFX_CSSStyleSheet;
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class CFX_XMLNode;
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class CXFA_FFDoc;
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class CXFA_TextParseContext;
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class CXFA_TextProvider;
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class CXFA_TextTabstopsContext;
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class CXFA_TextParser {
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public:
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CXFA_TextParser();
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virtual ~CXFA_TextParser();
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void Reset();
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void DoParse(const CFX_XMLNode* pXMLContainer,
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CXFA_TextProvider* pTextProvider);
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RetainPtr<CFX_CSSComputedStyle> CreateRootStyle(
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CXFA_TextProvider* pTextProvider);
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RetainPtr<CFX_CSSComputedStyle> ComputeStyle(
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const CFX_XMLNode* pXMLNode,
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CFX_CSSComputedStyle* pParentStyle);
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bool IsParsed() const { return m_bParsed; }
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XFA_AttributeValue GetVAlign(CXFA_TextProvider* pTextProvider) const;
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float GetTabInterval(CFX_CSSComputedStyle* pStyle) const;
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int32_t CountTabs(CFX_CSSComputedStyle* pStyle) const;
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bool IsSpaceRun(CFX_CSSComputedStyle* pStyle) const;
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bool GetTabstops(CFX_CSSComputedStyle* pStyle,
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CXFA_TextTabstopsContext* pTabstopContext);
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RetainPtr<CFGAS_GEFont> GetFont(CXFA_FFDoc* doc,
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CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle) const;
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float GetFontSize(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle) const;
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int32_t GetHorScale(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle,
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const CFX_XMLNode* pXMLNode) const;
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int32_t GetVerScale(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle) const;
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void GetUnderline(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle,
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int32_t& iUnderline,
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XFA_AttributeValue& iPeriod) const;
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void GetLinethrough(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle,
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int32_t& iLinethrough) const;
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FX_ARGB GetColor(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle) const;
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float GetBaseline(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle) const;
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float GetLineHeight(CXFA_TextProvider* pTextProvider,
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CFX_CSSComputedStyle* pStyle,
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bool bFirst,
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float fVerScale) const;
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Optional<WideString> GetEmbeddedObj(const CXFA_TextProvider* pTextProvider,
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const CFX_XMLNode* pXMLNode);
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CXFA_TextParseContext* GetParseContextFromMap(const CFX_XMLNode* pXMLNode);
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protected:
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bool TagValidate(const WideString& str) const;
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private:
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class TagProvider {
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public:
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TagProvider();
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~TagProvider();
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WideString GetTagName() { return m_wsTagName; }
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void SetTagName(const WideString& wsName) { m_wsTagName = wsName; }
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void SetAttribute(const WideString& wsAttr, const WideString& wsValue) {
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m_Attributes.insert({wsAttr, wsValue});
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}
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WideString GetAttribute(const WideString& wsAttr) {
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return m_Attributes[wsAttr];
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}
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bool m_bTagAvailable;
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bool m_bContent;
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private:
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WideString m_wsTagName;
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std::map<WideString, WideString> m_Attributes;
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};
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// static
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std::unique_ptr<TagProvider> ParseTagInfo(const CFX_XMLNode* pXMLNode);
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void InitCSSData(CXFA_TextProvider* pTextProvider);
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void ParseRichText(const CFX_XMLNode* pXMLNode,
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CFX_CSSComputedStyle* pParentStyle);
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std::unique_ptr<CFX_CSSStyleSheet> LoadDefaultSheetStyle();
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RetainPtr<CFX_CSSComputedStyle> CreateStyle(
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CFX_CSSComputedStyle* pParentStyle);
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bool m_bParsed;
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bool m_cssInitialized;
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std::unique_ptr<CFX_CSSStyleSelector> m_pSelector;
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std::map<const CFX_XMLNode*, std::unique_ptr<CXFA_TextParseContext>>
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m_mapXMLNodeToParseContext;
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};
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#endif // XFA_FXFA_CXFA_TEXTPARSER_H_
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