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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_pattern.h"
10 #include "core/fpdfapi/page/cpdf_tilingpattern.h"
11 #include "core/fxge/fx_dib.h"
12 
CPDF_ColorState()13 CPDF_ColorState::CPDF_ColorState() {}
14 
CPDF_ColorState(const CPDF_ColorState & that)15 CPDF_ColorState::CPDF_ColorState(const CPDF_ColorState& that)
16     : m_Ref(that.m_Ref) {}
17 
~CPDF_ColorState()18 CPDF_ColorState::~CPDF_ColorState() {}
19 
Emplace()20 void CPDF_ColorState::Emplace() {
21   m_Ref.Emplace();
22 }
23 
SetDefault()24 void CPDF_ColorState::SetDefault() {
25   m_Ref.GetPrivateCopy()->SetDefault();
26 }
27 
GetFillRGB() const28 uint32_t CPDF_ColorState::GetFillRGB() const {
29   return m_Ref.GetObject()->m_FillRGB;
30 }
31 
SetFillRGB(uint32_t rgb)32 void CPDF_ColorState::SetFillRGB(uint32_t rgb) {
33   m_Ref.GetPrivateCopy()->m_FillRGB = rgb;
34 }
35 
GetStrokeRGB() const36 uint32_t CPDF_ColorState::GetStrokeRGB() const {
37   return m_Ref.GetObject()->m_StrokeRGB;
38 }
39 
SetStrokeRGB(uint32_t rgb)40 void CPDF_ColorState::SetStrokeRGB(uint32_t rgb) {
41   m_Ref.GetPrivateCopy()->m_StrokeRGB = rgb;
42 }
43 
GetFillColor() const44 const CPDF_Color* CPDF_ColorState::GetFillColor() const {
45   const ColorData* pData = m_Ref.GetObject();
46   return pData ? &pData->m_FillColor : nullptr;
47 }
48 
GetMutableFillColor()49 CPDF_Color* CPDF_ColorState::GetMutableFillColor() {
50   return &m_Ref.GetPrivateCopy()->m_FillColor;
51 }
52 
HasFillColor() const53 bool CPDF_ColorState::HasFillColor() const {
54   const CPDF_Color* pColor = GetFillColor();
55   return pColor && !pColor->IsNull();
56 }
57 
GetStrokeColor() const58 const CPDF_Color* CPDF_ColorState::GetStrokeColor() const {
59   const ColorData* pData = m_Ref.GetObject();
60   return pData ? &pData->m_StrokeColor : nullptr;
61 }
62 
GetMutableStrokeColor()63 CPDF_Color* CPDF_ColorState::GetMutableStrokeColor() {
64   return &m_Ref.GetPrivateCopy()->m_StrokeColor;
65 }
66 
HasStrokeColor() const67 bool CPDF_ColorState::HasStrokeColor() const {
68   const CPDF_Color* pColor = GetStrokeColor();
69   return pColor && !pColor->IsNull();
70 }
71 
SetFillColor(CPDF_ColorSpace * pCS,FX_FLOAT * pValue,uint32_t nValues)72 void CPDF_ColorState::SetFillColor(CPDF_ColorSpace* pCS,
73                                    FX_FLOAT* pValue,
74                                    uint32_t nValues) {
75   ColorData* pData = m_Ref.GetPrivateCopy();
76   SetColor(pData->m_FillColor, pData->m_FillRGB, pCS, pValue, nValues);
77 }
78 
SetStrokeColor(CPDF_ColorSpace * pCS,FX_FLOAT * pValue,uint32_t nValues)79 void CPDF_ColorState::SetStrokeColor(CPDF_ColorSpace* pCS,
80                                      FX_FLOAT* pValue,
81                                      uint32_t nValues) {
82   ColorData* pData = m_Ref.GetPrivateCopy();
83   SetColor(pData->m_StrokeColor, pData->m_StrokeRGB, pCS, pValue, nValues);
84 }
85 
SetFillPattern(CPDF_Pattern * pPattern,FX_FLOAT * pValue,uint32_t nValues)86 void CPDF_ColorState::SetFillPattern(CPDF_Pattern* pPattern,
87                                      FX_FLOAT* pValue,
88                                      uint32_t nValues) {
89   ColorData* pData = m_Ref.GetPrivateCopy();
90   pData->m_FillColor.SetValue(pPattern, pValue, nValues);
91   int R, G, B;
92   bool ret = pData->m_FillColor.GetRGB(R, G, B);
93   if (CPDF_TilingPattern* pTilingPattern = pPattern->AsTilingPattern()) {
94     if (!ret && pTilingPattern->colored()) {
95       pData->m_FillRGB = 0x00BFBFBF;
96       return;
97     }
98   }
99   pData->m_FillRGB = ret ? FXSYS_RGB(R, G, B) : (uint32_t)-1;
100 }
101 
SetStrokePattern(CPDF_Pattern * pPattern,FX_FLOAT * pValue,uint32_t nValues)102 void CPDF_ColorState::SetStrokePattern(CPDF_Pattern* pPattern,
103                                        FX_FLOAT* pValue,
104                                        uint32_t nValues) {
105   ColorData* pData = m_Ref.GetPrivateCopy();
106   pData->m_StrokeColor.SetValue(pPattern, pValue, nValues);
107   int R, G, B;
108   bool ret = pData->m_StrokeColor.GetRGB(R, G, B);
109   if (CPDF_TilingPattern* pTilingPattern = pPattern->AsTilingPattern()) {
110     if (!ret && pTilingPattern->colored()) {
111       pData->m_StrokeRGB = 0x00BFBFBF;
112       return;
113     }
114   }
115   pData->m_StrokeRGB =
116       pData->m_StrokeColor.GetRGB(R, G, B) ? FXSYS_RGB(R, G, B) : (uint32_t)-1;
117 }
118 
SetColor(CPDF_Color & color,uint32_t & rgb,CPDF_ColorSpace * pCS,FX_FLOAT * pValue,uint32_t nValues)119 void CPDF_ColorState::SetColor(CPDF_Color& color,
120                                uint32_t& rgb,
121                                CPDF_ColorSpace* pCS,
122                                FX_FLOAT* pValue,
123                                uint32_t nValues) {
124   if (pCS)
125     color.SetColorSpace(pCS);
126   else if (color.IsNull())
127     color.SetColorSpace(CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY));
128 
129   if (color.GetColorSpace()->CountComponents() > nValues)
130     return;
131 
132   color.SetValue(pValue);
133   int R;
134   int G;
135   int B;
136   rgb = color.GetRGB(R, G, B) ? FXSYS_RGB(R, G, B) : (uint32_t)-1;
137 }
138 
ColorData()139 CPDF_ColorState::ColorData::ColorData() : m_FillRGB(0), m_StrokeRGB(0) {}
140 
ColorData(const ColorData & src)141 CPDF_ColorState::ColorData::ColorData(const ColorData& src)
142     : m_FillRGB(src.m_FillRGB), m_StrokeRGB(src.m_StrokeRGB) {
143   m_FillColor.Copy(&src.m_FillColor);
144   m_StrokeColor.Copy(&src.m_StrokeColor);
145 }
146 
~ColorData()147 CPDF_ColorState::ColorData::~ColorData() {}
148 
SetDefault()149 void CPDF_ColorState::ColorData::SetDefault() {
150   m_FillRGB = 0;
151   m_StrokeRGB = 0;
152   m_FillColor.SetColorSpace(CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY));
153   m_StrokeColor.SetColorSpace(CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY));
154 }
155