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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fpdfapi/page/cpdf_patterncs.h"
#include "core/fpdfapi/page/cpdf_docpagedata.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_document.h"
CPDF_PatternCS::CPDF_PatternCS(CPDF_Document* pDoc)
: CPDF_ColorSpace(pDoc, PDFCS_PATTERN),
m_pBaseCS(nullptr),
m_pCountedBaseCS(nullptr) {}
CPDF_PatternCS::~CPDF_PatternCS() {
CPDF_ColorSpace* pCS = m_pCountedBaseCS ? m_pCountedBaseCS->get() : nullptr;
if (pCS && m_pDocument) {
auto* pPageData = m_pDocument->GetPageData();
if (pPageData)
pPageData->ReleaseColorSpace(pCS->GetArray());
}
}
void CPDF_PatternCS::InitializeStockPattern() {
SetComponentsForStockCS(1);
}
uint32_t CPDF_PatternCS::v_Load(CPDF_Document* pDoc,
CPDF_Array* pArray,
std::set<CPDF_Object*>* pVisited) {
CPDF_Object* pBaseCS = pArray->GetDirectObjectAt(1);
if (pBaseCS == m_pArray)
return 0;
CPDF_DocPageData* pDocPageData = pDoc->GetPageData();
m_pBaseCS = pDocPageData->GetColorSpaceGuarded(pBaseCS, nullptr, pVisited);
if (!m_pBaseCS)
return 1;
if (m_pBaseCS->GetFamily() == PDFCS_PATTERN)
return 0;
m_pCountedBaseCS = pDocPageData->FindColorSpacePtr(m_pBaseCS->GetArray());
if (m_pBaseCS->CountComponents() > kMaxPatternColorComps)
return 0;
return m_pBaseCS->CountComponents() + 1;
}
bool CPDF_PatternCS::GetRGB(const float* pBuf,
float* R,
float* G,
float* B) const {
if (m_pBaseCS) {
ASSERT(m_pBaseCS->GetFamily() != PDFCS_PATTERN);
const auto* pvalue = reinterpret_cast<const PatternValue*>(pBuf);
if (m_pBaseCS->GetRGB(pvalue->m_Comps, R, G, B))
return true;
}
*R = 0.75f;
*G = 0.75f;
*B = 0.75f;
return false;
}
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