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 m_pBaseCS(nullptr),
16 m_pCountedBaseCS(nullptr) {}
17
~CPDF_PatternCS()18 CPDF_PatternCS::~CPDF_PatternCS() {
19 CPDF_ColorSpace* pCS = m_pCountedBaseCS ? m_pCountedBaseCS->get() : nullptr;
20 if (pCS && m_pDocument) {
21 auto* pPageData = m_pDocument->GetPageData();
22 if (pPageData)
23 pPageData->ReleaseColorSpace(pCS->GetArray());
24 }
25 }
26
InitializeStockPattern()27 void CPDF_PatternCS::InitializeStockPattern() {
28 SetComponentsForStockCS(1);
29 }
30
v_Load(CPDF_Document * pDoc,CPDF_Array * pArray,std::set<CPDF_Object * > * pVisited)31 uint32_t CPDF_PatternCS::v_Load(CPDF_Document* pDoc,
32 CPDF_Array* pArray,
33 std::set<CPDF_Object*>* pVisited) {
34 CPDF_Object* pBaseCS = pArray->GetDirectObjectAt(1);
35 if (pBaseCS == m_pArray)
36 return 0;
37
38 CPDF_DocPageData* pDocPageData = pDoc->GetPageData();
39 m_pBaseCS = pDocPageData->GetColorSpaceGuarded(pBaseCS, nullptr, pVisited);
40 if (!m_pBaseCS)
41 return 1;
42
43 if (m_pBaseCS->GetFamily() == PDFCS_PATTERN)
44 return 0;
45
46 m_pCountedBaseCS = pDocPageData->FindColorSpacePtr(m_pBaseCS->GetArray());
47 if (m_pBaseCS->CountComponents() > kMaxPatternColorComps)
48 return 0;
49
50 return m_pBaseCS->CountComponents() + 1;
51 }
52
GetRGB(float * pBuf,float * R,float * G,float * B) const53 bool CPDF_PatternCS::GetRGB(float* pBuf, float* R, float* G, float* B) const {
54 if (m_pBaseCS) {
55 ASSERT(m_pBaseCS->GetFamily() != PDFCS_PATTERN);
56 PatternValue* pvalue = reinterpret_cast<PatternValue*>(pBuf);
57 if (m_pBaseCS->GetRGB(pvalue->m_Comps, R, G, B))
58 return true;
59 }
60 *R = 0.75f;
61 *G = 0.75f;
62 *B = 0.75f;
63 return false;
64 }
65