Color management system - base classes + settings

2025-06-05 21:59:17 +02:00 · 2019-12-24 17:29:40 +01:00
parent aae6c56a5f
commit 0470c4bc1d
13 changed files with 882 additions and 15 deletions
--- a/PdfForQtViewer/pdfforqtviewer.qrc
+++ b/PdfForQtViewer/pdfforqtviewer.qrc
@@ -26,5 +26,6 @@
        <file>resources/shortcuts.svg</file>
        <file>resources/info.svg</file>
        <file>resources/send-mail.svg</file>
+        <file>resources/cms.svg</file>
    </qresource>
 </RCC>
--- a/PdfForQtViewer/pdfviewermainwindow.cpp
+++ b/PdfForQtViewer/pdfviewermainwindow.cpp
@@ -59,9 +59,10 @@
 namespace pdfviewer
 {

-PDFViewerMainWindow::PDFViewerMainWindow(QWidget *parent) :
+PDFViewerMainWindow::PDFViewerMainWindow(QWidget* parent) :
    QMainWindow(parent),
    ui(new Ui::PDFViewerMainWindow),
+    m_CMSManager(new pdf::PDFCMSManager(this)),
    m_settings(new PDFViewerSettings(this)),
    m_pdfWidget(nullptr),
    m_sidebarDockWidget(nullptr),
@@ -544,8 +545,7 @@ void PDFViewerMainWindow::readSettings()
        restoreState(state);
    }

-    m_settings->readSettings(settings);
-
+    m_settings->readSettings(settings, m_CMSManager->getDefaultSettings());
 }

 void PDFViewerMainWindow::readActionSettings()
@@ -976,10 +976,11 @@ void PDFViewerMainWindow::on_actionRendering_Errors_triggered()

 void PDFViewerMainWindow::on_actionOptions_triggered()
 {
-    PDFViewerSettingsDialog dialog(m_settings->getSettings(), getActions(), this);
+    PDFViewerSettingsDialog dialog(m_settings->getSettings(), m_settings->getColorManagementSystemSettings(), getActions(), m_CMSManager, this);
    if (dialog.exec() == QDialog::Accepted)
    {
        m_settings->setSettings(dialog.getSettings());
+        m_settings->setColorManagementSystemSettings(dialog.getCMSSettings());
    }
 }

--- a/PdfForQtViewer/pdfviewermainwindow.h
+++ b/PdfForQtViewer/pdfviewermainwindow.h
@@ -139,6 +139,7 @@ private:
    };

    Ui::PDFViewerMainWindow* ui;
+    pdf::PDFCMSManager* m_CMSManager;
    PDFViewerSettings* m_settings;
    pdf::PDFWidget* m_pdfWidget;
    QSharedPointer<pdf::PDFDocument> m_pdfDocument;
--- a/PdfForQtViewer/pdfviewersettings.cpp
+++ b/PdfForQtViewer/pdfviewersettings.cpp
@@ -26,11 +26,14 @@ const int PIXMAP_CACHE_LIMIT = QPixmapCache::cacheLimit();

 void PDFViewerSettings::setSettings(const PDFViewerSettings::Settings& settings)
 {
-    m_settings = settings;
-    emit settingsChanged();
+    if (m_settings != settings)
+    {
+        m_settings = settings;
+        emit settingsChanged();
+    }
 }

-void PDFViewerSettings::readSettings(QSettings& settings)
+void PDFViewerSettings::readSettings(QSettings& settings, const pdf::PDFCMSSettings& defaultCMSSettings)
 {
    Settings defaultSettings;

@@ -52,6 +55,18 @@ void PDFViewerSettings::readSettings(QSettings& settings)
    m_settings.m_allowLaunchURI = settings.value("allowLaunchURI", defaultSettings.m_allowLaunchURI).toBool();
    settings.endGroup();

+    settings.beginGroup("ColorManagementSystemSettings");
+    m_colorManagementSystemSettings.system = static_cast<pdf::PDFCMSSettings::System>(settings.value("system", int(defaultCMSSettings.system)).toInt());
+    m_colorManagementSystemSettings.accuracy = static_cast<pdf::PDFCMSSettings::Accuracy>(settings.value("accuracy", int(defaultCMSSettings.accuracy)).toInt());
+    m_colorManagementSystemSettings.intent = static_cast<pdf::RenderingIntent>(settings.value("intent", int(defaultCMSSettings.intent)).toInt());
+    m_colorManagementSystemSettings.isBlackPointCompensationActive = settings.value("isBlackPointCompensationActive", defaultCMSSettings.isBlackPointCompensationActive).toBool();
+    m_colorManagementSystemSettings.isWhitePaperColorTransformed = settings.value("isWhitePaperColorTransformed", defaultCMSSettings.isWhitePaperColorTransformed).toBool();
+    m_colorManagementSystemSettings.outputCS = settings.value("outputCS", defaultCMSSettings.outputCS).toString();
+    m_colorManagementSystemSettings.deviceGray = settings.value("deviceGray", defaultCMSSettings.deviceGray).toString();
+    m_colorManagementSystemSettings.deviceRGB = settings.value("deviceRGB", defaultCMSSettings.deviceRGB).toString();
+    m_colorManagementSystemSettings.deviceCMYK = settings.value("deviceCMYK", defaultCMSSettings.deviceCMYK).toString();
+    settings.endGroup();
+
    emit settingsChanged();
 }

@@ -74,6 +89,18 @@ void PDFViewerSettings::writeSettings(QSettings& settings)
    settings.setValue("allowLaunchApplications", m_settings.m_allowLaunchApplications);
    settings.setValue("allowLaunchURI", m_settings.m_allowLaunchURI);
    settings.endGroup();
+
+    settings.beginGroup("ColorManagementSystemSettings");
+    settings.setValue("system", int(m_colorManagementSystemSettings.system));
+    settings.setValue("accuracy", int(m_colorManagementSystemSettings.accuracy));
+    settings.setValue("intent", int(m_colorManagementSystemSettings.intent));
+    settings.setValue("isBlackPointCompensationActive", m_colorManagementSystemSettings.isBlackPointCompensationActive);
+    settings.setValue("isWhitePaperColorTransformed", m_colorManagementSystemSettings.isWhitePaperColorTransformed);
+    settings.setValue("outputCS", m_colorManagementSystemSettings.outputCS);
+    settings.setValue("deviceGray", m_colorManagementSystemSettings.deviceGray);
+    settings.setValue("deviceRGB", m_colorManagementSystemSettings.deviceRGB);
+    settings.setValue("deviceCMYK", m_colorManagementSystemSettings.deviceCMYK);
+    settings.endGroup();
 }

 QString PDFViewerSettings::getDirectory() const
--- a/PdfForQtViewer/pdfviewersettings.h
+++ b/PdfForQtViewer/pdfviewersettings.h
@@ -19,6 +19,7 @@
 #define PDFVIEWERSETTINGS_H

 #include "pdfrenderer.h"
+#include "pdfcms.h"

 #include <QObject>

@@ -40,6 +41,9 @@ public:
    {
        Settings();

+        bool operator==(const Settings&) const = default;
+        bool operator!=(const Settings&) const = default;
+
        pdf::PDFRenderer::Features m_features;
        QString m_directory;
        pdf::RendererEngine m_rendererEngine;
@@ -62,7 +66,7 @@ public:
    const Settings& getSettings() const { return m_settings; }
    void setSettings(const Settings& settings);

-    void readSettings(QSettings& settings);
+    void readSettings(QSettings& settings, const pdf::PDFCMSSettings& defaultCMSSettings);
    void writeSettings(QSettings& settings);

    QString getDirectory() const;
@@ -94,14 +98,17 @@ public:
    int getFontCacheLimit() const { return m_settings.m_fontCacheLimit; }
    int getInstancedFontCacheLimit() const { return m_settings.m_instancedFontCacheLimit; }

+    const pdf::PDFCMSSettings& getColorManagementSystemSettings() const { return m_colorManagementSystemSettings; }
+    void setColorManagementSystemSettings(const pdf::PDFCMSSettings& settings) { m_colorManagementSystemSettings = settings; }
+
 signals:
    void settingsChanged();

 private:
    Settings m_settings;
+    pdf::PDFCMSSettings m_colorManagementSystemSettings;
 };

-
 }   // namespace pdfviewer

 #endif // PDFVIEWERSETTINGS_H
--- a/PdfForQtViewer/pdfviewersettingsdialog.cpp
+++ b/PdfForQtViewer/pdfviewersettingsdialog.cpp
@@ -29,10 +29,14 @@
 namespace pdfviewer
 {

-PDFViewerSettingsDialog::PDFViewerSettingsDialog(const PDFViewerSettings::Settings& settings, QList<QAction*> actions, QWidget *parent) :
+PDFViewerSettingsDialog::PDFViewerSettingsDialog(const PDFViewerSettings::Settings& settings,
+                                                 const pdf::PDFCMSSettings& cmsSettings,
+                                                 QList<QAction*> actions,
+                                                 pdf::PDFCMSManager* cmsManager, QWidget *parent) :
    QDialog(parent),
    ui(new Ui::PDFViewerSettingsDialog),
    m_settings(settings),
+    m_cmsSettings(cmsSettings),
    m_actions(),
    m_isLoadingData(false)
 {
@@ -43,6 +47,7 @@ PDFViewerSettingsDialog::PDFViewerSettingsDialog(const PDFViewerSettings::Settin
    new QListWidgetItem(QIcon(":/resources/shading.svg"), tr("Shading"), ui->optionsPagesWidget, ShadingSettings);
    new QListWidgetItem(QIcon(":/resources/cache.svg"), tr("Cache"), ui->optionsPagesWidget, CacheSettings);
    new QListWidgetItem(QIcon(":/resources/shortcuts.svg"), tr("Shortcuts"), ui->optionsPagesWidget, ShortcutSettings);
+    new QListWidgetItem(QIcon(":/resources/cms.svg"), tr("Colors"), ui->optionsPagesWidget, ColorManagementSystemSettings);
    new QListWidgetItem(QIcon(":/resources/security.svg"), tr("Security"), ui->optionsPagesWidget, SecuritySettings);

    ui->renderingEngineComboBox->addItem(tr("Software"), static_cast<int>(pdf::RendererEngine::Software));
@@ -53,7 +58,33 @@ PDFViewerSettingsDialog::PDFViewerSettingsDialog(const PDFViewerSettings::Settin
        ui->multisampleAntialiasingSamplesCountComboBox->addItem(QString::number(i), i);
    }

-    for (QWidget* widget : { ui->engineInfoLabel, ui->renderingInfoLabel, ui->securityInfoLabel })
+    // Load CMS data
+    ui->cmsTypeComboBox->addItem(pdf::PDFCMSManager::getSystemName(pdf::PDFCMSSettings::System::Generic), int(pdf::PDFCMSSettings::System::Generic));
+    ui->cmsTypeComboBox->addItem(pdf::PDFCMSManager::getSystemName(pdf::PDFCMSSettings::System::LittleCMS2), int(pdf::PDFCMSSettings::System::LittleCMS2));
+
+    ui->cmsRenderingIntentComboBox->addItem(tr("Auto"), int(pdf::RenderingIntent::Auto));
+    ui->cmsRenderingIntentComboBox->addItem(tr("Perceptual"), int(pdf::RenderingIntent::Perceptual));
+    ui->cmsRenderingIntentComboBox->addItem(tr("Relative colorimetric"), int(pdf::RenderingIntent::RelativeColorimetric));
+    ui->cmsRenderingIntentComboBox->addItem(tr("Absolute colorimetric"), int(pdf::RenderingIntent::AbsoluteColorimetric));
+    ui->cmsRenderingIntentComboBox->addItem(tr("Saturation"), int(pdf::RenderingIntent::Saturation));
+
+    ui->cmsAccuracyComboBox->addItem(tr("Low"), int(pdf::PDFCMSSettings::Accuracy::Low));
+    ui->cmsAccuracyComboBox->addItem(tr("Medium"), int(pdf::PDFCMSSettings::Accuracy::Medium));
+    ui->cmsAccuracyComboBox->addItem(tr("High"), int(pdf::PDFCMSSettings::Accuracy::High));
+
+    auto fillColorProfileList = [](QComboBox* comboBox, const pdf::PDFColorSpaceIdentifiers& identifiers)
+    {
+        for (const pdf::PDFColorSpaceIdentifier& identifier : identifiers)
+        {
+            comboBox->addItem(identifier.name, identifier.id);
+        }
+    };
+    fillColorProfileList(ui->cmsOutputColorProfileComboBox, cmsManager->getOutputProfiles());
+    fillColorProfileList(ui->cmsDeviceGrayColorProfileComboBox, cmsManager->getGrayProfiles());
+    fillColorProfileList(ui->cmsDeviceRGBColorProfileComboBox, cmsManager->getRGBProfiles());
+    fillColorProfileList(ui->cmsDeviceCMYKColorProfileComboBox, cmsManager->getCMYKProfiles());
+
+    for (QWidget* widget : { ui->engineInfoLabel, ui->renderingInfoLabel, ui->securityInfoLabel, ui->cmsInfoLabel })
    {
        widget->setMinimumWidth(widget->sizeHint().width());
    }
@@ -120,6 +151,10 @@ void PDFViewerSettingsDialog::on_optionsPagesWidget_currentItemChanged(QListWidg
            ui->stackedWidget->setCurrentWidget(ui->shortcutsPage);
            break;

+        case ColorManagementSystemSettings:
+            ui->stackedWidget->setCurrentWidget(ui->cmsPage);
+            break;
+
        case SecuritySettings:
            ui->stackedWidget->setCurrentWidget(ui->securityPage);
            break;
@@ -183,6 +218,47 @@ void PDFViewerSettingsDialog::loadData()
    // Security
    ui->allowLaunchCheckBox->setChecked(m_settings.m_allowLaunchApplications);
    ui->allowRunURICheckBox->setChecked(m_settings.m_allowLaunchURI);
+
+    // CMS
+    ui->cmsTypeComboBox->setCurrentIndex(ui->cmsTypeComboBox->findData(int(m_cmsSettings.system)));
+    if (m_cmsSettings.system != pdf::PDFCMSSettings::System::Generic)
+    {
+        ui->cmsRenderingIntentComboBox->setEnabled(true);
+        ui->cmsRenderingIntentComboBox->setCurrentIndex(ui->cmsRenderingIntentComboBox->findData(int(m_cmsSettings.intent)));
+        ui->cmsAccuracyComboBox->setEnabled(true);
+        ui->cmsAccuracyComboBox->setCurrentIndex(ui->cmsAccuracyComboBox->findData(int(m_cmsSettings.accuracy)));
+        ui->cmsIsBlackPointCompensationCheckBox->setEnabled(true);
+        ui->cmsIsBlackPointCompensationCheckBox->setChecked(m_cmsSettings.isBlackPointCompensationActive);
+        ui->cmsWhitePaperColorTransformedCheckBox->setEnabled(true);
+        ui->cmsWhitePaperColorTransformedCheckBox->setChecked(m_cmsSettings.isWhitePaperColorTransformed);
+        ui->cmsOutputColorProfileComboBox->setEnabled(true);
+        ui->cmsOutputColorProfileComboBox->setCurrentIndex(ui->cmsOutputColorProfileComboBox->findData(m_cmsSettings.outputCS));
+        ui->cmsDeviceGrayColorProfileComboBox->setEnabled(true);
+        ui->cmsDeviceGrayColorProfileComboBox->setCurrentIndex(ui->cmsDeviceGrayColorProfileComboBox->findData(m_cmsSettings.deviceGray));
+        ui->cmsDeviceRGBColorProfileComboBox->setEnabled(true);
+        ui->cmsDeviceRGBColorProfileComboBox->setCurrentIndex(ui->cmsDeviceRGBColorProfileComboBox->findData(m_cmsSettings.deviceRGB));
+        ui->cmsDeviceCMYKColorProfileComboBox->setEnabled(true);
+        ui->cmsDeviceCMYKColorProfileComboBox->setCurrentIndex(ui->cmsDeviceCMYKColorProfileComboBox->findData(m_cmsSettings.deviceCMYK));
+    }
+    else
+    {
+        ui->cmsRenderingIntentComboBox->setEnabled(false);
+        ui->cmsRenderingIntentComboBox->setCurrentIndex(-1);
+        ui->cmsAccuracyComboBox->setEnabled(false);
+        ui->cmsAccuracyComboBox->setCurrentIndex(-1);
+        ui->cmsIsBlackPointCompensationCheckBox->setEnabled(false);
+        ui->cmsIsBlackPointCompensationCheckBox->setChecked(false);
+        ui->cmsWhitePaperColorTransformedCheckBox->setEnabled(false);
+        ui->cmsWhitePaperColorTransformedCheckBox->setChecked(false);
+        ui->cmsOutputColorProfileComboBox->setEnabled(false);
+        ui->cmsOutputColorProfileComboBox->setCurrentIndex(-1);
+        ui->cmsDeviceGrayColorProfileComboBox->setEnabled(false);
+        ui->cmsDeviceGrayColorProfileComboBox->setCurrentIndex(-1);
+        ui->cmsDeviceRGBColorProfileComboBox->setEnabled(false);
+        ui->cmsDeviceRGBColorProfileComboBox->setCurrentIndex(-1);
+        ui->cmsDeviceCMYKColorProfileComboBox->setEnabled(false);
+        ui->cmsDeviceCMYKColorProfileComboBox->setCurrentIndex(-1);
+    }
 }

 void PDFViewerSettingsDialog::saveData()
@@ -270,6 +346,42 @@ void PDFViewerSettingsDialog::saveData()
    {
        m_settings.m_instancedFontCacheLimit = ui->cachedInstancedFontLimitEdit->value();
    }
+    else if (sender == ui->cmsTypeComboBox)
+    {
+        m_cmsSettings.system = static_cast<pdf::PDFCMSSettings::System>(ui->cmsTypeComboBox->currentData().toInt());
+    }
+    else if (sender == ui->cmsRenderingIntentComboBox)
+    {
+        m_cmsSettings.intent = static_cast<pdf::RenderingIntent>(ui->cmsRenderingIntentComboBox->currentData().toInt());
+    }
+    else if (sender == ui->cmsAccuracyComboBox)
+    {
+        m_cmsSettings.accuracy = static_cast<pdf::PDFCMSSettings::Accuracy>(ui->cmsAccuracyComboBox->currentData().toInt());
+    }
+    else if (sender == ui->cmsIsBlackPointCompensationCheckBox)
+    {
+        m_cmsSettings.isBlackPointCompensationActive = ui->cmsIsBlackPointCompensationCheckBox->isChecked();
+    }
+    else if (sender == ui->cmsWhitePaperColorTransformedCheckBox)
+    {
+        m_cmsSettings.isWhitePaperColorTransformed = ui->cmsWhitePaperColorTransformedCheckBox->isChecked();
+    }
+    else if (sender == ui->cmsOutputColorProfileComboBox)
+    {
+        m_cmsSettings.outputCS = ui->cmsOutputColorProfileComboBox->currentData().toString();
+    }
+    else if (sender == ui->cmsDeviceGrayColorProfileComboBox)
+    {
+        m_cmsSettings.deviceGray = ui->cmsDeviceGrayColorProfileComboBox->currentData().toString();
+    }
+    else if (sender == ui->cmsDeviceRGBColorProfileComboBox)
+    {
+        m_cmsSettings.deviceRGB = ui->cmsDeviceRGBColorProfileComboBox->currentData().toString();
+    }
+    else if (sender == ui->cmsDeviceCMYKColorProfileComboBox)
+    {
+        m_cmsSettings.deviceCMYK = ui->cmsDeviceCMYKColorProfileComboBox->currentData().toString();
+    }

    loadData();
 }
--- a/PdfForQtViewer/pdfviewersettingsdialog.h
+++ b/PdfForQtViewer/pdfviewersettingsdialog.h
@@ -37,7 +37,17 @@ class PDFViewerSettingsDialog : public QDialog
    Q_OBJECT

 public:
-    explicit PDFViewerSettingsDialog(const PDFViewerSettings::Settings& settings, QList<QAction*> actions, QWidget* parent);
+    /// Constructor
+    /// \param settings Viewer settings
+    /// \param cmsSettings Color management system settings
+    /// \param actions Actions
+    /// \param cmsManager CMS manager
+    /// \param parent Parent widget
+    explicit PDFViewerSettingsDialog(const PDFViewerSettings::Settings& settings,
+                                     const pdf::PDFCMSSettings& cmsSettings,
+                                     QList<QAction*> actions,
+                                     pdf::PDFCMSManager* cmsManager,
+                                     QWidget* parent);
    virtual ~PDFViewerSettingsDialog() override;

    virtual void accept() override;
@@ -49,10 +59,12 @@ public:
        ShadingSettings,
        CacheSettings,
        ShortcutSettings,
+        ColorManagementSystemSettings,
        SecuritySettings
    };

    const PDFViewerSettings::Settings& getSettings() const { return m_settings; }
+    const pdf::PDFCMSSettings& getCMSSettings() const { return m_cmsSettings; }

 private slots:
    void on_optionsPagesWidget_currentItemChanged(QListWidgetItem* current, QListWidgetItem* previous);
@@ -66,6 +78,7 @@ private:

    Ui::PDFViewerSettingsDialog* ui;
    PDFViewerSettings::Settings m_settings;
+    pdf::PDFCMSSettings m_cmsSettings;
    QList<QAction*> m_actions;
    bool m_isLoadingData;
 };
--- a/PdfForQtViewer/pdfviewersettingsdialog.ui
+++ b/PdfForQtViewer/pdfviewersettingsdialog.ui
@@ -6,8 +6,8 @@
   <rect>
    <x>0</x>
    <y>0</y>
-    <width>720</width>
-    <height>538</height>
+    <width>742</width>
+    <height>573</height>
   </rect>
  </property>
  <property name="windowTitle">
@@ -26,7 +26,7 @@
     <item>
      <widget class="QStackedWidget" name="stackedWidget">
       <property name="currentIndex">
-        <number>4</number>
+        <number>5</number>
       </property>
       <widget class="QWidget" name="enginePage">
        <layout class="QVBoxLayout" name="enginePageLayout">
@@ -564,6 +564,144 @@
         </item>
        </layout>
       </widget>
+       <widget class="QWidget" name="cmsPage">
+        <layout class="QVBoxLayout" name="verticalLayout_4">
+         <item>
+          <widget class="QGroupBox" name="cmsGroupBox">
+           <property name="title">
+            <string>Color management system settings</string>
+           </property>
+           <layout class="QVBoxLayout" name="verticalLayout_6">
+            <item>
+             <layout class="QGridLayout" name="cmsWidgetsLayout">
+              <item row="0" column="1">
+               <widget class="QComboBox" name="cmsTypeComboBox"/>
+              </item>
+              <item row="4" column="1">
+               <widget class="QCheckBox" name="cmsWhitePaperColorTransformedCheckBox">
+                <property name="text">
+                 <string>Enabled</string>
+                </property>
+               </widget>
+              </item>
+              <item row="4" column="0">
+               <widget class="QLabel" name="cmsWhitePaperColorTransformedLabel">
+                <property name="text">
+                 <string>White paper color transformed</string>
+                </property>
+               </widget>
+              </item>
+              <item row="7" column="0">
+               <widget class="QLabel" name="cmsDeviceRGBProfileLabel">
+                <property name="text">
+                 <string>Device RGB color profile</string>
+                </property>
+               </widget>
+              </item>
+              <item row="5" column="0">
+               <widget class="QLabel" name="cmsOutputProfileLabel">
+                <property name="text">
+                 <string>Output color profile</string>
+                </property>
+               </widget>
+              </item>
+              <item row="3" column="1">
+               <widget class="QCheckBox" name="cmsIsBlackPointCompensationCheckBox">
+                <property name="text">
+                 <string>Enabled</string>
+                </property>
+               </widget>
+              </item>
+              <item row="6" column="0">
+               <widget class="QLabel" name="cmsDeviceGrayColorProfileLabel">
+                <property name="text">
+                 <string>Device gray color profile</string>
+                </property>
+               </widget>
+              </item>
+              <item row="1" column="1">
+               <widget class="QComboBox" name="cmsRenderingIntentComboBox"/>
+              </item>
+              <item row="1" column="0">
+               <widget class="QLabel" name="cmsRenderingIntentLabel">
+                <property name="text">
+                 <string>Rendering intent</string>
+                </property>
+               </widget>
+              </item>
+              <item row="2" column="1">
+               <widget class="QComboBox" name="cmsAccuracyComboBox"/>
+              </item>
+              <item row="2" column="0">
+               <widget class="QLabel" name="cmsAccuracyLabel">
+                <property name="text">
+                 <string>Accuracy</string>
+                </property>
+               </widget>
+              </item>
+              <item row="0" column="0">
+               <widget class="QLabel" name="cmsLabel">
+                <property name="text">
+                 <string>Color management system</string>
+                </property>
+               </widget>
+              </item>
+              <item row="3" column="0">
+               <widget class="QLabel" name="cmsBlackPointCompensationLabel">
+                <property name="text">
+                 <string>Black point compensation</string>
+                </property>
+               </widget>
+              </item>
+              <item row="8" column="0">
+               <widget class="QLabel" name="cmsDeviceCMYKColorProfileLabel">
+                <property name="text">
+                 <string>Device CMYK color profile</string>
+                </property>
+               </widget>
+              </item>
+              <item row="5" column="1">
+               <widget class="QComboBox" name="cmsOutputColorProfileComboBox"/>
+              </item>
+              <item row="6" column="1">
+               <widget class="QComboBox" name="cmsDeviceGrayColorProfileComboBox"/>
+              </item>
+              <item row="7" column="1">
+               <widget class="QComboBox" name="cmsDeviceRGBColorProfileComboBox"/>
+              </item>
+              <item row="8" column="1">
+               <widget class="QComboBox" name="cmsDeviceCMYKColorProfileComboBox"/>
+              </item>
+             </layout>
+            </item>
+            <item>
+             <widget class="QLabel" name="cmsInfoLabel">
+              <property name="text">
+               <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Color management system &lt;/span&gt;manages input and output color profiles and color transformations. It enables to perceive real colors defined in PDF document. Select 'Generic' to disable this functionality for fast color transform. &lt;span style=&quot; font-weight:600;&quot;&gt;Rendering intent&lt;/span&gt; affects how colors are transformed. Rendering intents are usually defined in content streams in PDF document, but you can override them, if you select other intent, than 'Auto'. &lt;span style=&quot; font-weight:600;&quot;&gt;Accuracy &lt;/span&gt;affects how precise the color transformation would be, at the cost of more memory consumption. &lt;span style=&quot; font-weight:600;&quot;&gt;Black point compensation&lt;/span&gt; compensates black colors out of gamut. &lt;span style=&quot; font-weight:600;&quot;&gt;White paper color transformed &lt;/span&gt;affects color of the underlying white paper - it transforms pure white from device RGB profile to output profile, if enabled.&lt;/p&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Output color profile&lt;/span&gt; defines output (target) rendering profile. This profile should be color space, in which your screen is displaying  colors. You can also define color spaces for &lt;span style=&quot; font-weight:600;&quot;&gt;gray/RGB/CMYK&lt;/span&gt; device color spaces, which are used to transform gray/RGB/CMYK colors to the output color profile.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+              </property>
+              <property name="wordWrap">
+               <bool>true</bool>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="cmsVerticalSpacer">
+              <property name="orientation">
+               <enum>Qt::Vertical</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>20</width>
+                <height>41</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </widget>
+         </item>
+        </layout>
+       </widget>
       <widget class="QWidget" name="securityPage">
        <layout class="QVBoxLayout" name="securityPageLayout">
         <property name="leftMargin">
--- a/PdfForQtViewer/resources/cms.svg
+++ b/PdfForQtViewer/resources/cms.svg
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
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