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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 #include "core/fpdfapi/page/cpdf_colorstate.h"
8 
9 #include "core/fpdfapi/page/cpdf_colorspace.h"
10 #include "core/fpdfapi/page/cpdf_pattern.h"
11 #include "core/fpdfapi/page/cpdf_tilingpattern.h"
12 #include "core/fxge/fx_dib.h"
13 
CPDF_ColorState()14 CPDF_ColorState::CPDF_ColorState() {}
15 
CPDF_ColorState(const CPDF_ColorState & that)16 CPDF_ColorState::CPDF_ColorState(const CPDF_ColorState& that)
17     : m_Ref(that.m_Ref) {}
18 
~CPDF_ColorState()19 CPDF_ColorState::~CPDF_ColorState() {}
20 
Emplace()21 void CPDF_ColorState::Emplace() {
22   m_Ref.Emplace();
23 }
24 
SetDefault()25 void CPDF_ColorState::SetDefault() {
26   m_Ref.GetPrivateCopy()->SetDefault();
27 }
28 
GetFillColorRef() const29 FX_COLORREF CPDF_ColorState::GetFillColorRef() const {
30   return m_Ref.GetObject()->m_FillColorRef;
31 }
32 
SetFillColorRef(FX_COLORREF colorref)33 void CPDF_ColorState::SetFillColorRef(FX_COLORREF colorref) {
34   m_Ref.GetPrivateCopy()->m_FillColorRef = colorref;
35 }
36 
GetStrokeColorRef() const37 FX_COLORREF CPDF_ColorState::GetStrokeColorRef() const {
38   return m_Ref.GetObject()->m_StrokeColorRef;
39 }
40 
SetStrokeColorRef(FX_COLORREF colorref)41 void CPDF_ColorState::SetStrokeColorRef(FX_COLORREF colorref) {
42   m_Ref.GetPrivateCopy()->m_StrokeColorRef = colorref;
43 }
44 
GetFillColor() const45 const CPDF_Color* CPDF_ColorState::GetFillColor() const {
46   const ColorData* pData = m_Ref.GetObject();
47   return pData ? &pData->m_FillColor : nullptr;
48 }
49 
GetMutableFillColor()50 CPDF_Color* CPDF_ColorState::GetMutableFillColor() {
51   return &m_Ref.GetPrivateCopy()->m_FillColor;
52 }
53 
HasFillColor() const54 bool CPDF_ColorState::HasFillColor() const {
55   const CPDF_Color* pColor = GetFillColor();
56   return pColor && !pColor->IsNull();
57 }
58 
GetStrokeColor() const59 const CPDF_Color* CPDF_ColorState::GetStrokeColor() const {
60   const ColorData* pData = m_Ref.GetObject();
61   return pData ? &pData->m_StrokeColor : nullptr;
62 }
63 
GetMutableStrokeColor()64 CPDF_Color* CPDF_ColorState::GetMutableStrokeColor() {
65   return &m_Ref.GetPrivateCopy()->m_StrokeColor;
66 }
67 
HasStrokeColor() const68 bool CPDF_ColorState::HasStrokeColor() const {
69   const CPDF_Color* pColor = GetStrokeColor();
70   return pColor && !pColor->IsNull();
71 }
72 
SetFillColor(const RetainPtr<CPDF_ColorSpace> & pCS,const std::vector<float> & values)73 void CPDF_ColorState::SetFillColor(const RetainPtr<CPDF_ColorSpace>& pCS,
74                                    const std::vector<float>& values) {
75   ColorData* pData = m_Ref.GetPrivateCopy();
76   SetColor(pCS, values, &pData->m_FillColor, &pData->m_FillColorRef);
77 }
78 
SetStrokeColor(const RetainPtr<CPDF_ColorSpace> & pCS,const std::vector<float> & values)79 void CPDF_ColorState::SetStrokeColor(const RetainPtr<CPDF_ColorSpace>& pCS,
80                                      const std::vector<float>& values) {
81   ColorData* pData = m_Ref.GetPrivateCopy();
82   SetColor(pCS, values, &pData->m_StrokeColor, &pData->m_StrokeColorRef);
83 }
84 
SetFillPattern(const RetainPtr<CPDF_Pattern> & pPattern,const std::vector<float> & values)85 void CPDF_ColorState::SetFillPattern(const RetainPtr<CPDF_Pattern>& pPattern,
86                                      const std::vector<float>& values) {
87   ColorData* pData = m_Ref.GetPrivateCopy();
88   SetPattern(pPattern, values, &pData->m_FillColor, &pData->m_FillColorRef);
89 }
90 
SetStrokePattern(const RetainPtr<CPDF_Pattern> & pPattern,const std::vector<float> & values)91 void CPDF_ColorState::SetStrokePattern(const RetainPtr<CPDF_Pattern>& pPattern,
92                                        const std::vector<float>& values) {
93   ColorData* pData = m_Ref.GetPrivateCopy();
94   SetPattern(pPattern, values, &pData->m_StrokeColor, &pData->m_StrokeColorRef);
95 }
96 
SetColor(const RetainPtr<CPDF_ColorSpace> & pCS,const std::vector<float> & values,CPDF_Color * color,FX_COLORREF * colorref)97 void CPDF_ColorState::SetColor(const RetainPtr<CPDF_ColorSpace>& pCS,
98                                const std::vector<float>& values,
99                                CPDF_Color* color,
100                                FX_COLORREF* colorref) {
101   ASSERT(color);
102   ASSERT(colorref);
103 
104   if (pCS)
105     color->SetColorSpace(pCS);
106   else if (color->IsNull())
107     color->SetColorSpace(CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY));
108 
109   if (color->CountComponents() > values.size())
110     return;
111 
112   if (!color->IsPattern())
113     color->SetValueForNonPattern(values);
114   int R;
115   int G;
116   int B;
117   *colorref = color->GetRGB(&R, &G, &B) ? FXSYS_BGR(B, G, R) : 0xFFFFFFFF;
118 }
119 
SetPattern(const RetainPtr<CPDF_Pattern> & pPattern,const std::vector<float> & values,CPDF_Color * color,FX_COLORREF * colorref)120 void CPDF_ColorState::SetPattern(const RetainPtr<CPDF_Pattern>& pPattern,
121                                  const std::vector<float>& values,
122                                  CPDF_Color* color,
123                                  FX_COLORREF* colorref) {
124   ASSERT(color);
125   ASSERT(colorref);
126 
127   color->SetValueForPattern(pPattern, values);
128   int R;
129   int G;
130   int B;
131   bool ret = color->GetRGB(&R, &G, &B);
132   if (CPDF_TilingPattern* pTilingPattern = pPattern->AsTilingPattern()) {
133     if (!ret && pTilingPattern->colored()) {
134       *colorref = 0x00BFBFBF;
135       return;
136     }
137   }
138   *colorref = ret ? FXSYS_BGR(B, G, R) : 0xFFFFFFFF;
139 }
140 
141 CPDF_ColorState::ColorData::ColorData() = default;
142 
ColorData(const ColorData & src)143 CPDF_ColorState::ColorData::ColorData(const ColorData& src)
144     : m_FillColorRef(src.m_FillColorRef),
145       m_StrokeColorRef(src.m_StrokeColorRef),
146       m_FillColor(src.m_FillColor),
147       m_StrokeColor(src.m_StrokeColor) {}
148 
149 CPDF_ColorState::ColorData::~ColorData() = default;
150 
SetDefault()151 void CPDF_ColorState::ColorData::SetDefault() {
152   m_FillColorRef = 0;
153   m_StrokeColorRef = 0;
154   m_FillColor.SetColorSpace(CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY));
155   m_StrokeColor.SetColorSpace(CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY));
156 }
157 
Clone() const158 RetainPtr<CPDF_ColorState::ColorData> CPDF_ColorState::ColorData::Clone()
159     const {
160   return pdfium::MakeRetain<CPDF_ColorState::ColorData>(*this);
161 }
162