1 // Copyright 2014 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_patterncs.h"
8
9 #include "core/fpdfapi/page/cpdf_docpagedata.h"
10 #include "core/fpdfapi/parser/cpdf_array.h"
11 #include "core/fpdfapi/parser/cpdf_document.h"
12
CPDF_PatternCS(CPDF_Document * pDoc)13 CPDF_PatternCS::CPDF_PatternCS(CPDF_Document* pDoc)
14 : CPDF_ColorSpace(pDoc, PDFCS_PATTERN) {}
15
16 CPDF_PatternCS::~CPDF_PatternCS() = default;
17
InitializeStockPattern()18 void CPDF_PatternCS::InitializeStockPattern() {
19 SetComponentsForStockCS(1);
20 }
21
v_Load(CPDF_Document * pDoc,const CPDF_Array * pArray,std::set<const CPDF_Object * > * pVisited)22 uint32_t CPDF_PatternCS::v_Load(CPDF_Document* pDoc,
23 const CPDF_Array* pArray,
24 std::set<const CPDF_Object*>* pVisited) {
25 const CPDF_Object* pBaseCS = pArray->GetDirectObjectAt(1);
26 if (pBaseCS == m_pArray)
27 return 0;
28
29 auto* pDocPageData = CPDF_DocPageData::FromDocument(pDoc);
30 m_pBaseCS = pDocPageData->GetColorSpaceGuarded(pBaseCS, nullptr, pVisited);
31 if (!m_pBaseCS)
32 return 1;
33
34 if (m_pBaseCS->GetFamily() == PDFCS_PATTERN)
35 return 0;
36
37 if (m_pBaseCS->CountComponents() > kMaxPatternColorComps)
38 return 0;
39
40 return m_pBaseCS->CountComponents() + 1;
41 }
42
GetRGB(const float * pBuf,float * R,float * G,float * B) const43 bool CPDF_PatternCS::GetRGB(const float* pBuf,
44 float* R,
45 float* G,
46 float* B) const {
47 NOTREACHED();
48 return false;
49 }
50
AsPatternCS()51 CPDF_PatternCS* CPDF_PatternCS::AsPatternCS() {
52 return this;
53 }
54
AsPatternCS() const55 const CPDF_PatternCS* CPDF_PatternCS::AsPatternCS() const {
56 return this;
57 }
58
GetPatternRGB(const PatternValue & value,float * R,float * G,float * B) const59 bool CPDF_PatternCS::GetPatternRGB(const PatternValue& value,
60 float* R,
61 float* G,
62 float* B) const {
63 if (m_pBaseCS && m_pBaseCS->GetRGB(value.GetComps().data(), R, G, B))
64 return true;
65
66 *R = 0.75f;
67 *G = 0.75f;
68 *B = 0.75f;
69 return false;
70 }
71