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1 // Copyright 2016 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 CORE_FPDFAPI_PAGE_CPDF_TEXTSTATE_H_
8 #define CORE_FPDFAPI_PAGE_CPDF_TEXTSTATE_H_
9 
10 #include "core/fxcrt/shared_copy_on_write.h"
11 #include "core/fxcrt/unowned_ptr.h"
12 
13 class CPDF_Document;
14 class CPDF_Font;
15 
16 // See PDF Reference 1.7, page 402, table 5.3.
17 enum class TextRenderingMode {
18   MODE_FILL = 0,
19   MODE_STROKE = 1,
20   MODE_FILL_STROKE = 2,
21   MODE_INVISIBLE = 3,
22   MODE_FILL_CLIP = 4,
23   MODE_STROKE_CLIP = 5,
24   MODE_FILL_STROKE_CLIP = 6,
25   MODE_CLIP = 7,
26 };
27 
28 class CPDF_TextState {
29  public:
30   CPDF_TextState();
31   ~CPDF_TextState();
32 
33   void Emplace();
34 
35   CPDF_Font* GetFont() const;
36   void SetFont(CPDF_Font* pFont);
37 
38   float GetFontSize() const;
39   void SetFontSize(float size);
40 
41   const float* GetMatrix() const;
42   float* GetMutableMatrix();
43 
44   float GetCharSpace() const;
45   void SetCharSpace(float sp);
46 
47   float GetWordSpace() const;
48   void SetWordSpace(float sp);
49 
50   float GetFontSizeV() const;
51   float GetFontSizeH() const;
52   float GetBaselineAngle() const;
53   float GetShearAngle() const;
54 
55   TextRenderingMode GetTextMode() const;
56   void SetTextMode(TextRenderingMode mode);
57 
58   const float* GetCTM() const;
59   float* GetMutableCTM();
60 
61  private:
62   class TextData : public Retainable {
63    public:
64     TextData();
65     TextData(const TextData& src);
66     ~TextData() override;
67 
68     void SetFont(CPDF_Font* pFont);
69     float GetFontSizeV() const;
70     float GetFontSizeH() const;
71     float GetBaselineAngle() const;
72     float GetShearAngle() const;
73 
74     CPDF_Font* m_pFont;
75     UnownedPtr<CPDF_Document> m_pDocument;
76     float m_FontSize;
77     float m_CharSpace;
78     float m_WordSpace;
79     TextRenderingMode m_TextMode;
80     float m_Matrix[4];
81     float m_CTM[4];
82 
83    private:
84     void ReleaseFont();
85   };
86 
87   SharedCopyOnWrite<TextData> m_Ref;
88 };
89 
90 bool SetTextRenderingModeFromInt(int iMode, TextRenderingMode* mode);
91 bool TextRenderingModeIsClipMode(const TextRenderingMode& mode);
92 bool TextRenderingModeIsStrokeMode(const TextRenderingMode& mode);
93 
94 #endif  // CORE_FPDFAPI_PAGE_CPDF_TEXTSTATE_H_
95