mirror of
https://github.com/JakubMelka/PDF4QT.git
synced 2025-06-05 21:59:17 +02:00
Color management system - base classes + settings
This commit is contained in:
@@ -39,6 +39,7 @@ SOURCES += \
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sources/pdfaction.cpp \
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sources/pdfblendfunction.cpp \
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sources/pdfccittfaxdecoder.cpp \
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sources/pdfcms.cpp \
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sources/pdfcompiler.cpp \
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sources/pdffile.cpp \
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sources/pdfitemmodels.cpp \
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@@ -77,6 +78,7 @@ HEADERS += \
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sources/pdfaction.h \
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sources/pdfblendfunction.h \
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sources/pdfccittfaxdecoder.h \
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sources/pdfcms.h \
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sources/pdfcompiler.h \
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sources/pdffile.h \
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sources/pdfitemmodels.h \
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@@ -174,6 +176,16 @@ zlib.files = $$PDFFORQT_DEPENDENCIES_PATH/zlib/bin/zlib.dll
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zlib.path = $$DESTDIR/install
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INSTALLS += zlib
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# Link lcms2
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LIBS += -L$$PDFFORQT_DEPENDENCIES_PATH/lcms2/bin/ -llcms2
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INCLUDEPATH += $$PDFFORQT_DEPENDENCIES_PATH/lcms2/include
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DEPENDPATH += $$PDFFORQT_DEPENDENCIES_PATH/lcms2/include
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# Add lcms2 to installations
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lcms2.files = $$PDFFORQT_DEPENDENCIES_PATH/lcms2/bin/lcms2.dll
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lcms2.path = $$DESTDIR/install
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INSTALLS += lcms2
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# ensure debug info even for RELEASE build
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CONFIG += force_debug_info
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219
PdfForQtLib/sources/pdfcms.cpp
Normal file
219
PdfForQtLib/sources/pdfcms.cpp
Normal file
@@ -0,0 +1,219 @@
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// Copyright (C) 2019 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfcms.h"
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#pragma warning(push)
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#pragma warning(disable:5033)
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#include <lcms2.h>
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#pragma warning(pop)
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namespace pdf
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{
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bool PDFCMSGeneric::isCompatible(const PDFCMSSettings& settings) const
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{
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return settings.system == PDFCMSSettings::System::Generic;
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}
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QColor PDFCMSGeneric::getColorFromDeviceGray(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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return QColor();
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}
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QColor PDFCMSGeneric::getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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return QColor();
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}
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QColor PDFCMSGeneric::getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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return QColor();
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}
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QColor PDFCMSGeneric::getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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Q_UNUSED(whitePoint);
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return QColor();
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}
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PDFCMSManager::PDFCMSManager(QObject* parent) :
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BaseClass(parent)
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{
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getOutputProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_outputProfiles.get(this, &PDFCMSManager::getOutputProfilesImpl);
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getGrayProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_grayProfiles.get(this, &PDFCMSManager::getGrayProfilesImpl);
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getRGBProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_RGBProfiles.get(this, &PDFCMSManager::getRGBProfilesImpl);
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getCMYKProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_CMYKProfiles.get(this, &PDFCMSManager::getCMYKProfilesImpl);
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}
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PDFCMSSettings PDFCMSManager::getDefaultSettings() const
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{
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PDFCMSSettings settings;
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auto getFirstProfileId = [](const PDFColorSpaceIdentifiers& identifiers)
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{
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if (!identifiers.empty())
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{
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return identifiers.front().id;
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}
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return QString();
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};
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settings.system = PDFCMSSettings::System::LittleCMS2;
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settings.outputCS = getFirstProfileId(getOutputProfiles());
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settings.deviceGray = getFirstProfileId(getGrayProfiles());
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settings.deviceRGB = getFirstProfileId(getRGBProfiles());
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settings.deviceCMYK = getFirstProfileId(getCMYKProfiles());
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return settings;
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}
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QString PDFCMSManager::getSystemName(PDFCMSSettings::System system)
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{
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switch (system)
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{
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case PDFCMSSettings::System::Generic:
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return tr("Generic");
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case PDFCMSSettings::System::LittleCMS2:
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{
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const int major = LCMS_VERSION / 1000;
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const int minor = (LCMS_VERSION % 1000) / 10;
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return tr("Little CMS %1.%2").arg(major).arg(minor);
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}
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default:
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{
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Q_ASSERT(false);
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break;
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}
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}
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return QString();
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getOutputProfilesImpl() const
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{
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// Currently, we only support sRGB output color profile.
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return { PDFColorSpaceIdentifier::createSRGB() };
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getGrayProfilesImpl() const
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{
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// Jakub Melka: We create gray profiles for temperature 5000K, 6500K and 9300K.
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// We also use linear gamma and gamma value 2.2.
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return {
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PDFColorSpaceIdentifier::createGray(tr("Gray D65, γ = 2.2"), "@GENERIC_Gray_D65_g22", 6500.0, 2.2),
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PDFColorSpaceIdentifier::createGray(tr("Gray D50, γ = 2.2"), "@GENERIC_Gray_D50_g22", 5000.0, 2.2),
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PDFColorSpaceIdentifier::createGray(tr("Gray D93, γ = 2.2"), "@GENERIC_Gray_D93_g22", 9300.0, 2.2),
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PDFColorSpaceIdentifier::createGray(tr("Gray D65, γ = 1.0 (linear)"), "@GENERIC_Gray_D65_g10", 6500.0, 1.0),
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PDFColorSpaceIdentifier::createGray(tr("Gray D50, γ = 1.0 (linear)"), "@GENERIC_Gray_D50_g10", 5000.0, 1.0),
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PDFColorSpaceIdentifier::createGray(tr("Gray D93, γ = 1.0 (linear)"), "@GENERIC_Gray_D93_g10", 9300.0, 1.0)
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};
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getRGBProfilesImpl() const
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{
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// Jakub Melka: We create RGB profiles for common standars and also for
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// default standard sRGB. See https://en.wikipedia.org/wiki/Color_spaces_with_RGB_primaries.
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return {
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PDFColorSpaceIdentifier::createSRGB(),
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PDFColorSpaceIdentifier::createRGB(tr("HDTV (ITU-R BT.709)"), "@GENERIC_RGB_HDTV", 6500, QPointF(0.64, 0.33), QPointF(0.30, 0.60), QPointF(0.15, 0.06), 20.0 / 9.0),
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PDFColorSpaceIdentifier::createRGB(tr("Adobe RGB 1998"), "@GENERIC_RGB_Adobe1998", 6500, QPointF(0.64, 0.33), QPointF(0.30, 0.60), QPointF(0.15, 0.06), 563.0 / 256.0),
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PDFColorSpaceIdentifier::createRGB(tr("PAL / SECAM"), "@GENERIC_RGB_PalSecam", 6500, QPointF(0.64, 0.33), QPointF(0.29, 0.60), QPointF(0.15, 0.06), 14.0 / 5.0),
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PDFColorSpaceIdentifier::createRGB(tr("NTSC"), "@GENERIC_RGB_NTSC", 6500, QPointF(0.64, 0.34), QPointF(0.31, 0.595), QPointF(0.155, 0.07), 20.0 / 9.0),
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PDFColorSpaceIdentifier::createRGB(tr("Adobe Wide Gamut RGB"), "@GENERIC_RGB_AdobeWideGamut", 5000, QPointF(0.735, 0.265), QPointF(0.115, 0.826), QPointF(0.157, 0.018), 563.0 / 256.0),
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PDFColorSpaceIdentifier::createRGB(tr("ProPhoto RGB"), "@GENERIC_RGB_ProPhoto", 5000, QPointF(0.7347, 0.2653), QPointF(0.1596, 0.8404), QPointF(0.0366, 0.0001), 9.0 / 5.0)
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};
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getCMYKProfilesImpl() const
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{
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return {
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};
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}
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PDFColorSpaceIdentifier PDFColorSpaceIdentifier::createGray(QString name, QString id, PDFReal temperature, PDFReal gamma)
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{
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PDFColorSpaceIdentifier result;
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result.type = Type::Gray;
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result.name = qMove(name);
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result.id = qMove(id);
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result.temperature = temperature;
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result.gamma = gamma;
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return result;
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}
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PDFColorSpaceIdentifier PDFColorSpaceIdentifier::createSRGB()
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{
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PDFColorSpaceIdentifier result;
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result.type = Type::sRGB;
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result.name = PDFCMSManager::tr("sRGB");
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result.id = "@GENERIC_sRGB";
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return result;
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}
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PDFColorSpaceIdentifier PDFColorSpaceIdentifier::createRGB(QString name, QString id, PDFReal temperature, QPointF primaryR, QPointF primaryG, QPointF primaryB, PDFReal gamma)
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{
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PDFColorSpaceIdentifier result;
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result.type = Type::RGB;
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result.name = qMove(name);
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result.id = qMove(id);
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result.temperature = temperature;
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result.primaryR = primaryR;
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result.primaryG = primaryG;
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result.primaryB = primaryB;
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result.gamma = gamma;
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return result;
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}
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} // namespace pdf
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225
PdfForQtLib/sources/pdfcms.h
Normal file
225
PdfForQtLib/sources/pdfcms.h
Normal file
@@ -0,0 +1,225 @@
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// Copyright (C) 2019 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
|
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// the Free Software Foundation, either version 3 of the License, or
|
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// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
|
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Lesser General Public License for more details.
|
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFCMS_H
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#define PDFCMS_H
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#include "pdfglobal.h"
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#include "pdfcolorspaces.h"
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#include "pdfexception.h"
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#include "pdfutils.h"
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#include <QMutex>
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#include <compare>
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namespace pdf
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{
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/// This simple structure stores settings for color management system, and what
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/// color management system should be used. At default, two color management
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/// system are available - generic (which uses default imprecise color management),
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/// and CMS using engine LittleCMS2, which was written by Marti Maria, and is
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/// linked as separate library.
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struct PDFCMSSettings
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{
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/// Type of color management system
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enum class System
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{
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Generic,
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LittleCMS2
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};
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/// Controls accuracy of the color transformations. High accuracy
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/// could mean high memory consumption, but better color accuracy,
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/// low accuracy means low memory consumption and low color accuracy.
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enum class Accuracy
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{
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Low,
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Medium,
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High
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};
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bool operator==(const PDFCMSSettings&) const = default;
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System system = System::Generic;
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Accuracy accuracy = Accuracy::Medium;
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RenderingIntent intent = RenderingIntent::Auto;
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bool isBlackPointCompensationActive = true;
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bool isWhitePaperColorTransformed = false;
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QString outputCS; ///< Output (rendering) color space
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QString deviceGray; ///< Identifiers for color space (device gray)
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QString deviceRGB; ///< Identifiers for color space (device RGB)
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QString deviceCMYK; ///< Identifiers for color space (device CMYK)
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};
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/// Color management system base class. It contains functions to transform
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/// colors from various color system to device color system. If color management
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/// system can't handle color transform, it should return invalid color.
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class PDFCMS
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{
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public:
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explicit inline PDFCMS() = default;
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virtual ~PDFCMS() = default;
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/// This function should decide, if color management system is compatible with these
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/// settings (so, it transforms colors according to this setting). If this
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/// function returns false, then this color management system should be replaced
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/// by newly created one, according these settings.
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virtual bool isCompatible(const PDFCMSSettings& settings) const = 0;
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/// Converts color in Device Gray color space to the target device
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/// color space. If error occurs, then invalid color is returned.
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/// Caller then should handle this - try to convert color as accurate
|
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/// as possible.
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/// \param color Single color channel value
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/// \param intent Rendering intent
|
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/// \param reporter Render error reporter (used, when color transform fails)
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virtual QColor getColorFromDeviceGray(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const = 0;
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/// Converts color in Device RGB color space to the target device
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/// color space. If error occurs, then invalid color is returned.
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/// Caller then should handle this - try to convert color as accurate
|
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/// as possible.
|
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/// \param color Three color channel value (R,G,B channel)
|
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/// \param intent Rendering intent
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/// \param reporter Render error reporter (used, when color transform fails)
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virtual QColor getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const = 0;
|
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/// Converts color in Device CMYK color space to the target device
|
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/// color space. If error occurs, then invalid color is returned.
|
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/// Caller then should handle this - try to convert color as accurate
|
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/// as possible.
|
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/// \param color Four color channel value (C,M,Y,K channel)
|
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/// \param intent Rendering intent
|
||||
/// \param reporter Render error reporter (used, when color transform fails)
|
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virtual QColor getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const = 0;
|
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|
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/// Converts color in XYZ color space to the target device
|
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/// color space. If error occurs, then invalid color is returned.
|
||||
/// Caller then should handle this - try to convert color as accurate
|
||||
/// as possible.
|
||||
/// \param whitePoint White point of source XYZ color space
|
||||
/// \param Three color channel value (X,Y,Z channel)
|
||||
/// \param intent Rendering intent
|
||||
/// \param reporter Render error reporter (used, when color transform fails)
|
||||
virtual QColor getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const = 0;
|
||||
};
|
||||
|
||||
class PDFCMSGeneric : public PDFCMS
|
||||
{
|
||||
public:
|
||||
explicit inline PDFCMSGeneric() = default;
|
||||
|
||||
virtual bool isCompatible(const PDFCMSSettings& settings) const override;
|
||||
virtual QColor getColorFromDeviceGray(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
|
||||
virtual QColor getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
|
||||
virtual QColor getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
|
||||
virtual QColor getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
|
||||
};
|
||||
|
||||
struct PDFColorSpaceIdentifier
|
||||
{
|
||||
enum class Type
|
||||
{
|
||||
Gray,
|
||||
sRGB,
|
||||
RGB,
|
||||
CMYK
|
||||
};
|
||||
|
||||
Type type = Type::sRGB;
|
||||
QString name;
|
||||
QString id;
|
||||
PDFReal temperature = 6500.0;
|
||||
QPointF primaryR;
|
||||
QPointF primaryG;
|
||||
QPointF primaryB;
|
||||
PDFReal gamma = 1.0;
|
||||
|
||||
/// Creates gray color space identifier
|
||||
/// \param name Name of color profile
|
||||
/// \param id Identifier of color profile
|
||||
/// \param temperature White point temperature
|
||||
/// \param gamma Gamma correction
|
||||
static PDFColorSpaceIdentifier createGray(QString name, QString id, PDFReal temperature, PDFReal gamma);
|
||||
|
||||
/// Creates sRGB color space identifier
|
||||
static PDFColorSpaceIdentifier createSRGB();
|
||||
|
||||
/// Creates RGB color space identifier
|
||||
/// \param name Name of color profile
|
||||
/// \param id Identifier of color profile
|
||||
/// \param temperature White point temperature
|
||||
/// \param primaryR Primary red
|
||||
/// \param primaryG Primary green
|
||||
/// \param primaryB Primary blue
|
||||
/// \param gamma Gamma correction
|
||||
static PDFColorSpaceIdentifier createRGB(QString name, QString id, PDFReal temperature, QPointF primaryR, QPointF primaryG, QPointF primaryB, PDFReal gamma);
|
||||
};
|
||||
|
||||
using PDFColorSpaceIdentifiers = std::vector<PDFColorSpaceIdentifier>;
|
||||
|
||||
/// Manager, that manages current color management system and also list
|
||||
/// of usable input and output color profiles. It has color profiles
|
||||
/// for outout device, and color profiles for input (gray/RGB/CMYK).
|
||||
/// It also handles settings, and it's changes. Constant functions
|
||||
/// is save to call from multiple threads, this also holds for some
|
||||
/// non-constant functions - manager is protected by mutexes.
|
||||
class PDFFORQTLIBSHARED_EXPORT PDFCMSManager : public QObject
|
||||
{
|
||||
Q_OBJECT
|
||||
|
||||
private:
|
||||
using BaseClass = QObject;
|
||||
|
||||
public:
|
||||
explicit PDFCMSManager(QObject* parent);
|
||||
|
||||
const PDFColorSpaceIdentifiers& getOutputProfiles() const;
|
||||
const PDFColorSpaceIdentifiers& getGrayProfiles() const;
|
||||
const PDFColorSpaceIdentifiers& getRGBProfiles() const;
|
||||
const PDFColorSpaceIdentifiers& getCMYKProfiles() const;
|
||||
|
||||
/// Returns default color management settings
|
||||
PDFCMSSettings getDefaultSettings() const;
|
||||
|
||||
/// Get translated name for color management system
|
||||
/// \param system System
|
||||
static QString getSystemName(PDFCMSSettings::System system);
|
||||
|
||||
signals:
|
||||
void colorManagementSystemChanged();
|
||||
|
||||
private:
|
||||
PDFColorSpaceIdentifiers getOutputProfilesImpl() const;
|
||||
PDFColorSpaceIdentifiers getGrayProfilesImpl() const;
|
||||
PDFColorSpaceIdentifiers getRGBProfilesImpl() const;
|
||||
PDFColorSpaceIdentifiers getCMYKProfilesImpl() const;
|
||||
|
||||
PDFCMSSettings m_settings;
|
||||
|
||||
mutable QMutex m_mutex;
|
||||
mutable PDFCachedItem<PDFColorSpaceIdentifiers> m_outputProfiles;
|
||||
mutable PDFCachedItem<PDFColorSpaceIdentifiers> m_grayProfiles;
|
||||
mutable PDFCachedItem<PDFColorSpaceIdentifiers> m_RGBProfiles;
|
||||
mutable PDFCachedItem<PDFColorSpaceIdentifiers> m_CMYKProfiles;
|
||||
};
|
||||
|
||||
} // namespace pdf
|
||||
|
||||
#endif // PDFCMS_H
|
@@ -150,6 +150,7 @@ enum class RendererEngine
|
||||
|
||||
enum class RenderingIntent
|
||||
{
|
||||
Auto, ///< Rendering intent is automatically selected
|
||||
Perceptual,
|
||||
AbsoluteColorimetric,
|
||||
RelativeColorimetric,
|
||||
|
Reference in New Issue
Block a user