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// Copyright 2016 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_color.h"
#include "core/fpdfapi/page/cpdf_docpagedata.h"
#include "core/fpdfapi/page/cpdf_patterncs.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fxcrt/fx_system.h"
CPDF_Color::CPDF_Color() {}
CPDF_Color::~CPDF_Color() {
ReleaseBuffer();
ReleaseColorSpace();
}
bool CPDF_Color::IsPattern() const {
return m_pCS && IsPatternInternal();
}
void CPDF_Color::ReleaseBuffer() {
if (!m_pBuffer)
return;
if (IsPatternInternal()) {
PatternValue* pvalue = reinterpret_cast<PatternValue*>(m_pBuffer);
CPDF_Pattern* pPattern =
pvalue->m_pCountedPattern ? pvalue->m_pCountedPattern->get() : nullptr;
if (pPattern) {
CPDF_DocPageData* pPageData = pPattern->document()->GetPageData();
if (pPageData)
pPageData->ReleasePattern(pPattern->pattern_obj());
}
}
FX_Free(m_pBuffer);
m_pBuffer = nullptr;
}
void CPDF_Color::ReleaseColorSpace() {
if (!m_pCS)
return;
CPDF_Document* pDoc = m_pCS->GetDocument();
if (!pDoc)
return;
auto* pPageData = pDoc->GetPageData();
if (pPageData)
pPageData->ReleaseColorSpace(m_pCS->GetArray());
m_pCS = nullptr;
}
bool CPDF_Color::IsPatternInternal() const {
return m_pCS->GetFamily() == PDFCS_PATTERN;
}
void CPDF_Color::SetColorSpace(CPDF_ColorSpace* pCS) {
ASSERT(pCS);
if (m_pCS == pCS) {
if (!m_pBuffer)
m_pBuffer = pCS->CreateBuf();
ReleaseColorSpace();
m_pCS = pCS;
return;
}
ReleaseBuffer();
ReleaseColorSpace();
m_pCS = pCS;
if (IsPatternInternal())
m_pBuffer = pCS->CreateBuf();
else
m_pBuffer = pCS->CreateBufAndSetDefaultColor();
}
void CPDF_Color::SetValueForNonPattern(const std::vector<float>& values) {
ASSERT(m_pBuffer);
ASSERT(!IsPatternInternal());
ASSERT(m_pCS->CountComponents() <= values.size());
memcpy(m_pBuffer, values.data(), m_pCS->CountComponents() * sizeof(float));
}
void CPDF_Color::SetValueForPattern(CPDF_Pattern* pPattern,
const std::vector<float>& values) {
if (values.size() > kMaxPatternColorComps)
return;
if (!IsPattern()) {
FX_Free(m_pBuffer);
m_pCS = CPDF_ColorSpace::GetStockCS(PDFCS_PATTERN);
m_pBuffer = m_pCS->CreateBuf();
}
CPDF_DocPageData* pDocPageData = nullptr;
PatternValue* pvalue = reinterpret_cast<PatternValue*>(m_pBuffer);
if (pvalue->m_pPattern) {
pDocPageData = pvalue->m_pPattern->document()->GetPageData();
pDocPageData->ReleasePattern(pvalue->m_pPattern->pattern_obj());
}
pvalue->m_nComps = values.size();
pvalue->m_pPattern = pPattern;
if (!values.empty())
memcpy(pvalue->m_Comps, values.data(), values.size() * sizeof(float));
pvalue->m_pCountedPattern = nullptr;
if (pPattern) {
if (!pDocPageData)
pDocPageData = pPattern->document()->GetPageData();
pvalue->m_pCountedPattern =
pDocPageData->FindPatternPtr(pPattern->pattern_obj());
}
}
void CPDF_Color::Copy(const CPDF_Color& src) {
ReleaseBuffer();
ReleaseColorSpace();
m_pCS = src.m_pCS;
if (!m_pCS)
return;
CPDF_Document* pDoc = m_pCS->GetDocument();
CPDF_Array* pArray = m_pCS->GetArray();
if (pDoc && pArray) {
m_pCS = pDoc->GetPageData()->GetCopiedColorSpace(pArray);
if (!m_pCS)
return;
}
m_pBuffer = m_pCS->CreateBuf();
memcpy(m_pBuffer, src.m_pBuffer, m_pCS->GetBufSize());
if (!IsPatternInternal())
return;
PatternValue* pValue = reinterpret_cast<PatternValue*>(m_pBuffer);
CPDF_Pattern* pPattern = pValue->m_pPattern;
if (!pPattern)
return;
pValue->m_pPattern = pPattern->document()->GetPageData()->GetPattern(
pPattern->pattern_obj(), false, pPattern->parent_matrix());
}
uint32_t CPDF_Color::CountComponents() const {
return m_pCS->CountComponents();
}
bool CPDF_Color::IsColorSpaceRGB() const {
return m_pCS == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB);
}
bool CPDF_Color::GetRGB(int* R, int* G, int* B) const {
if (!m_pBuffer)
return false;
float r = 0.0f;
float g = 0.0f;
float b = 0.0f;
bool result;
if (IsPatternInternal()) {
const CPDF_PatternCS* pPatternCS = m_pCS->AsPatternCS();
const auto* pValue = reinterpret_cast<const PatternValue*>(m_pBuffer);
result = pPatternCS->GetPatternRGB(*pValue, &r, &g, &b);
} else {
result = m_pCS->GetRGB(m_pBuffer, &r, &g, &b);
}
if (!result)
return false;
*R = static_cast<int32_t>(r * 255 + 0.5f);
*G = static_cast<int32_t>(g * 255 + 0.5f);
*B = static_cast<int32_t>(b * 255 + 0.5f);
return true;
}
CPDF_Pattern* CPDF_Color::GetPattern() const {
ASSERT(IsPattern());
if (!m_pBuffer)
return nullptr;
PatternValue* pvalue = reinterpret_cast<PatternValue*>(m_pBuffer);
return pvalue->m_pPattern;
}
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