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_COLORSTATE_H_
8 #define CORE_FPDFAPI_PAGE_CPDF_COLORSTATE_H_
9 
10 #include <vector>
11 
12 #include "core/fpdfapi/page/cpdf_color.h"
13 #include "core/fxcrt/fx_system.h"
14 #include "core/fxcrt/retain_ptr.h"
15 #include "core/fxcrt/shared_copy_on_write.h"
16 #include "core/fxge/fx_dib.h"
17 
18 class CPDF_Color;
19 class CPDF_ColorSpace;
20 class CPDF_Pattern;
21 
22 class CPDF_ColorState {
23  public:
24   CPDF_ColorState();
25   CPDF_ColorState(const CPDF_ColorState& that);
26   ~CPDF_ColorState();
27 
28   void Emplace();
29   void SetDefault();
30 
31   FX_COLORREF GetFillColorRef() const;
32   void SetFillColorRef(FX_COLORREF colorref);
33 
34   FX_COLORREF GetStrokeColorRef() const;
35   void SetStrokeColorRef(FX_COLORREF colorref);
36 
37   const CPDF_Color* GetFillColor() const;
38   CPDF_Color* GetMutableFillColor();
39   bool HasFillColor() const;
40 
41   const CPDF_Color* GetStrokeColor() const;
42   CPDF_Color* GetMutableStrokeColor();
43   bool HasStrokeColor() const;
44 
45   void SetFillColor(const RetainPtr<CPDF_ColorSpace>& pCS,
46                     const std::vector<float>& values);
47   void SetStrokeColor(const RetainPtr<CPDF_ColorSpace>& pCS,
48                       const std::vector<float>& values);
49   void SetFillPattern(const RetainPtr<CPDF_Pattern>& pattern,
50                       const std::vector<float>& values);
51   void SetStrokePattern(const RetainPtr<CPDF_Pattern>& pattern,
52                         const std::vector<float>& values);
53 
HasRef()54   bool HasRef() const { return !!m_Ref; }
55 
56  private:
57   class ColorData final : public Retainable {
58    public:
59     template <typename T, typename... Args>
60     friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
61 
62     RetainPtr<ColorData> Clone() const;
63 
64     void SetDefault();
65 
66     FX_COLORREF m_FillColorRef = 0;
67     FX_COLORREF m_StrokeColorRef = 0;
68     CPDF_Color m_FillColor;
69     CPDF_Color m_StrokeColor;
70 
71    private:
72     ColorData();
73     ColorData(const ColorData& src);
74     ~ColorData() override;
75   };
76 
77   void SetColor(const RetainPtr<CPDF_ColorSpace>& pCS,
78                 const std::vector<float>& values,
79                 CPDF_Color* color,
80                 FX_COLORREF* colorref);
81   void SetPattern(const RetainPtr<CPDF_Pattern>& pPattern,
82                   const std::vector<float>& values,
83                   CPDF_Color* color,
84                   FX_COLORREF* colorref);
85 
86   SharedCopyOnWrite<ColorData> m_Ref;
87 };
88 
89 #endif  // CORE_FPDFAPI_PAGE_CPDF_COLORSTATE_H_
90