1// Copyright 2017 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7#ifndef XFA_FDE_CSS_CFDE_CSSSTYLESELECTOR_H_
8#define XFA_FDE_CSS_CFDE_CSSSTYLESELECTOR_H_
9
10#include <memory>
11#include <vector>
12
13#include "core/fxcrt/fx_basic.h"
14#include "core/fxcrt/fx_system.h"
15#include "xfa/fde/css/cfde_cssrulecollection.h"
16#include "xfa/fde/css/fde_css.h"
17
18class CFDE_CSSComputedStyle;
19class CFDE_CSSCustomProperty;
20class CFDE_CSSDeclaration;
21class CFDE_CSSPropertyHolder;
22class CFDE_CSSSelector;
23class CFDE_CSSStyleSheet;
24class CFDE_CSSValue;
25class CFDE_CSSValueList;
26class CFGAS_FontMgr;
27
28class CFDE_CSSStyleSelector {
29 public:
30  explicit CFDE_CSSStyleSelector(CFGAS_FontMgr* pFontMgr);
31  ~CFDE_CSSStyleSelector();
32
33  void SetDefFontSize(FX_FLOAT fFontSize);
34  void SetUAStyleSheet(std::unique_ptr<CFDE_CSSStyleSheet> pSheet);
35  void UpdateStyleIndex();
36
37  CFX_RetainPtr<CFDE_CSSComputedStyle> CreateComputedStyle(
38      CFDE_CSSComputedStyle* pParentStyle);
39
40  // Note, the dest style has to be an out param because the CXFA_TextParser
41  // adds non-inherited data from the parent style. Attempting to copy
42  // internally will fail as you'll lose the non-inherited data.
43  void ComputeStyle(const std::vector<const CFDE_CSSDeclaration*>& declArray,
44                    const CFX_WideString& styleString,
45                    const CFX_WideString& alignString,
46                    CFDE_CSSComputedStyle* pDestStyle);
47
48  std::vector<const CFDE_CSSDeclaration*> MatchDeclarations(
49      const CFX_WideString& tagname);
50
51 private:
52  bool MatchSelector(const CFX_WideString& tagname, CFDE_CSSSelector* pSel);
53
54  void AppendInlineStyle(CFDE_CSSDeclaration* pDecl,
55                         const CFX_WideString& style);
56  void ApplyDeclarations(
57      const std::vector<const CFDE_CSSDeclaration*>& declArray,
58      const CFDE_CSSDeclaration* extraDecl,
59      CFDE_CSSComputedStyle* pDestStyle);
60  void ApplyProperty(FDE_CSSProperty eProperty,
61                     const CFX_RetainPtr<CFDE_CSSValue>& pValue,
62                     CFDE_CSSComputedStyle* pComputedStyle);
63  void ExtractValues(const CFDE_CSSDeclaration* decl,
64                     std::vector<const CFDE_CSSPropertyHolder*>* importants,
65                     std::vector<const CFDE_CSSPropertyHolder*>* normals,
66                     std::vector<const CFDE_CSSCustomProperty*>* custom);
67
68  bool SetLengthWithPercent(FDE_CSSLength& width,
69                            FDE_CSSPrimitiveType eType,
70                            const CFX_RetainPtr<CFDE_CSSValue>& pValue,
71                            FX_FLOAT fFontSize);
72  FX_FLOAT ToFontSize(FDE_CSSPropertyValue eValue, FX_FLOAT fCurFontSize);
73  FDE_CSSDisplay ToDisplay(FDE_CSSPropertyValue eValue);
74  FDE_CSSTextAlign ToTextAlign(FDE_CSSPropertyValue eValue);
75  uint16_t ToFontWeight(FDE_CSSPropertyValue eValue);
76  FDE_CSSFontStyle ToFontStyle(FDE_CSSPropertyValue eValue);
77  FDE_CSSVerticalAlign ToVerticalAlign(FDE_CSSPropertyValue eValue);
78  uint32_t ToTextDecoration(const CFX_RetainPtr<CFDE_CSSValueList>& pList);
79  FDE_CSSFontVariant ToFontVariant(FDE_CSSPropertyValue eValue);
80
81  CFGAS_FontMgr* const m_pFontMgr;
82  FX_FLOAT m_fDefFontSize;
83  std::unique_ptr<CFDE_CSSStyleSheet> m_UAStyles;
84  CFDE_CSSRuleCollection m_UARules;
85};
86
87#endif  // XFA_FDE_CSS_CFDE_CSSSTYLESELECTOR_H_
88