Opacity option for a background image.

src/app/valentina/core/vtooloptionspropertybrowser.cpp

@@ -37,6 +37,7 @@
 #include "../vwidgets/vsimplepoint.h"
 #include "../vwidgets/vsimplecurve.h"
 #include "../vpropertyexplorer/vproperties.h"
+#include "def.h"
 #include "vformulaproperty.h"
 #include "../vpatterndb/vformula.h"
 #include "../vgeometry/vcubicbezier.h"
@@ -52,6 +53,7 @@ namespace
 {
 Q_GLOBAL_STATIC_WITH_ARGS(const QString, AttrHold, (QLatin1String("hold")))
 Q_GLOBAL_STATIC_WITH_ARGS(const QString, AttrVisible, (QLatin1String("visible")))
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, AttrOpacity, (QLatin1String("opacity")))
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -753,6 +755,22 @@ void VToolOptionsPropertyBrowser::AddPropertyApproximationScale(const QString &p
     AddProperty(aScaleProperty, AttrAScale);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VToolOptionsPropertyBrowser::AddPropertyOpacity(const QString &propertyName, int opacity)
+{
+    QMap<QString, QVariant> settings
+    {
+        {QStringLiteral("Min"), 0},
+        {QStringLiteral("Max"), 100},
+        {QStringLiteral("Step"), 1},
+        {QStringLiteral("Suffix"), QChar('%')}
+    };
+
+    auto *opacityProperty = new VPE::VIntegerProperty(propertyName, settings);
+    opacityProperty->setValue(opacity);
+    AddProperty(opacityProperty, *AttrOpacity);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 template<class Tool>
 void VToolOptionsPropertyBrowser::SetName(VPE::VProperty *property)
@@ -813,6 +831,26 @@ void VToolOptionsPropertyBrowser::SetVisible(VPE::VProperty *property)
     }
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+template<class Tool>
+void VToolOptionsPropertyBrowser::SetOpacity(VPE::VProperty *property)
+{
+    if (auto *i = qgraphicsitem_cast<Tool *>(currentItem))
+    {
+        const int opacity = property->data(VPE::VProperty::DPC_Data, Qt::DisplayRole).toInt();
+        if (VFuzzyComparePossibleNulls(opacity, i->GetOpacity()))
+        {
+            return;
+        }
+
+        i->SetOpacity(opacity/100.);
+    }
+    else
+    {
+        qWarning()<<"Can't cast item";
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 template<class Tool>
 void VToolOptionsPropertyBrowser::SetPointName(VPE::VProperty *property)
@@ -2612,7 +2650,7 @@ void VToolOptionsPropertyBrowser::ChangeDataBackgroundPixmapItem(VPE::VProperty
 {
     SCASSERT(property != nullptr)
 
-    const QString id = propertyToId[property];
+    const QString id = propertyToId.value(property);
 
     switch (PropertiesList().indexOf(id))
     {
@@ -2625,6 +2663,9 @@ void VToolOptionsPropertyBrowser::ChangeDataBackgroundPixmapItem(VPE::VProperty
         case 66: // AttrVisible
             SetVisible<VBackgroundPixmapItem>(property);
             break;
+        case 67: // AttrOpacity
+            SetOpacity<VBackgroundPixmapItem>(property);
+            break;
         default:
             qWarning()<<"Unknown property type. id = "<<id;
             break;
@@ -2636,7 +2677,7 @@ void VToolOptionsPropertyBrowser::ChangeDataBackgroundSVGItem(VPE::VProperty *pr
 {
     SCASSERT(property != nullptr)
 
-    const QString id = propertyToId[property];
+    const QString id = propertyToId.value(property);
 
     switch (PropertiesList().indexOf(id))
     {
@@ -2649,6 +2690,9 @@ void VToolOptionsPropertyBrowser::ChangeDataBackgroundSVGItem(VPE::VProperty *pr
         case 66: // AttrVisible
             SetVisible<VBackgroundSVGItem>(property);
             break;
+        case 67: // AttrOpacity
+            SetOpacity<VBackgroundPixmapItem>(property);
+            break;
         default:
             qWarning()<<"Unknown property type. id = "<<id;
             break;
@@ -3235,6 +3279,7 @@ void VToolOptionsPropertyBrowser::ShowOptionsBackgroundPixmapItem(QGraphicsItem
     AddPropertyObjectName(i, tr("Name:"), false);
     AddPropertyBool(tr("Hold:"), i->IsHold(), *AttrHold);
     AddPropertyBool(tr("Visible:"), i->IsVisible(), *AttrVisible);
+    AddPropertyOpacity(tr("Opacity:"), static_cast<int>(i->GetOpacity()*100));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -3246,6 +3291,7 @@ void VToolOptionsPropertyBrowser::ShowOptionsBackgroundSVGItem(QGraphicsItem *it
     AddPropertyObjectName(i, tr("Name:"), false);
     AddPropertyBool(tr("Hold:"), i->IsHold(), *AttrHold);
     AddPropertyBool(tr("Visible:"), i->IsVisible(), *AttrVisible);
+    AddPropertyOpacity(tr("Opacity:"), static_cast<int>(i->GetOpacity()*100));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -4200,6 +4246,7 @@ void VToolOptionsPropertyBrowser::UpdateOptionsBackgroundPixmapItem()
     idToProperty.value(AttrName)->setValue(i->name());
     idToProperty.value(*AttrHold)->setValue(i->IsHold());
     idToProperty.value(*AttrVisible)->setValue(i->IsVisible());
+    idToProperty.value(*AttrOpacity)->setValue(static_cast<int>(i->GetOpacity()*100));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -4210,6 +4257,7 @@ void VToolOptionsPropertyBrowser::UpdateOptionsBackgroundSVGItem()
     idToProperty.value(AttrName)->setValue(i->name());
     idToProperty.value(*AttrHold)->setValue(i->IsHold());
     idToProperty.value(*AttrVisible)->setValue(i->IsVisible());
+    idToProperty.value(*AttrOpacity)->setValue(static_cast<int>(i->GetOpacity()*100));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -4282,7 +4330,8 @@ QStringList VToolOptionsPropertyBrowser::PropertiesList() const
         AttrAlias1,                         /* 63 */
         AttrAlias2,                         /* 64 */
         *AttrHold,                          /* 65 */
-        *AttrVisible                        /* 66 */
+        *AttrVisible,                       /* 66 */
+        *AttrOpacity                        /* 67 */
     };
     return attr;
 }

src/app/valentina/core/vtooloptionspropertybrowser.h

@@ -75,6 +75,9 @@ private:
     template<class Tool>
     void SetVisible(VPE::VProperty *property);
 
+    template<class Tool>
+    void SetOpacity(VPE::VProperty *property);
+
     template<class Tool>
     void SetPointName(VPE::VProperty *property);
 
@@ -188,6 +191,7 @@ private:
                               const QString &id);
 
     void AddPropertyApproximationScale(const QString &propertyName, qreal aScale);
+    void AddPropertyOpacity(const QString &propertyName, int opacity);
     void AddPropertyFormula(const QString &propertyName, const VFormula &formula, const QString &attrName);
     void AddPropertyParentPointName(const QString &pointName, const QString &propertyName,
                                     const QString &propertyAttribure);

src/app/valentina/dialogs/configpages/preferencespatternpage.cpp

@@ -112,6 +112,8 @@ PreferencesPatternPage::PreferencesPatternPage(QWidget *parent)
     ui->checkBoxRemeberPatternMaterials->setChecked(settings->IsRememberPatternMaterials());
     m_knownMaterials = settings->GetKnownMaterials();
 
+    ui->spinBoxOpacity->setValue(settings->GetBackgroundImageDefOpacity());
+
     connect(ui->pushButtonKnownMaterials, &QPushButton::clicked, this, &PreferencesPatternPage::ManageKnownMaterials);
 }
 
@@ -175,6 +177,8 @@ QStringList PreferencesPatternPage::Apply()
     settings->SetKnownMaterials(m_knownMaterials);
     settings->SetRememberPatternMaterials(ui->checkBoxRemeberPatternMaterials->isChecked());
 
+    settings->SetBackgroundImageDefOpacity(ui->spinBoxOpacity->value());
+
     return preferences;
 }
 

src/app/valentina/dialogs/configpages/preferencespatternpage.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>373</width>
+    <width>553</width>
-    <height>760</height>
+    <height>887</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -24,8 +24,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>353</width>
+        <width>533</width>
-        <height>740</height>
+        <height>867</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_2">
@@ -381,6 +381,38 @@ This option will take an affect after restart.</string>
          </layout>
         </widget>
        </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox_7">
+         <property name="title">
+          <string>Background image</string>
+         </property>
+         <layout class="QFormLayout" name="formLayout">
+          <item row="0" column="0">
+           <widget class="QLabel" name="label_7">
+            <property name="text">
+             <string>Opacity:</string>
+            </property>
+           </widget>
+          </item>
+          <item row="0" column="1">
+           <widget class="QSpinBox" name="spinBoxOpacity">
+            <property name="toolTip">
+             <string>Opacity value by default</string>
+            </property>
+            <property name="suffix">
+             <string notr="true">%</string>
+            </property>
+            <property name="maximum">
+             <number>100</number>
+            </property>
+            <property name="value">
+             <number>100</number>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
        <item>
         <spacer name="verticalSpacer">
          <property name="orientation">

src/app/valentina/mainwindow.cpp

@@ -1392,6 +1392,9 @@ void MainWindow::PlaceBackgroundImage(const QPointF &pos, const QString &fileNam
     VBackgroundPatternImage image = VBackgroundPatternImage::FromFile(fileName, dialog.BuiltIn());
     image.SetName(dialog.Name());
 
+    VValentinaSettings *settings = VAbstractValApplication::VApp()->ValentinaSettings();
+    image.SetOpacity(settings->GetBackgroundImageDefOpacity()/100.);
+
     QTransform m;
     m.translate(pos.x(), pos.y());
 

src/libs/ifc/schema/pattern/v0.9.0.xsd

@@ -74,6 +74,7 @@
                       <xs:attribute name="hold" type="xs:boolean"/>
                       <xs:attribute name="visible" type="xs:boolean"/>
                       <xs:attribute name="zValue" type="xs:unsignedInt"/>
+                      <xs:attribute name="opacity" type="xs:double"/>
                     </xs:extension>
                   </xs:simpleContent>      
                 </xs:complexType>

src/libs/ifc/xml/vabstractpattern.cpp

@@ -52,6 +52,7 @@
 #include "../vpatterndb/vcontainer.h"
 #include "../vpatterndb/vpiecenode.h"
 #include "../vtools/tools/vdatatool.h"
+#include "def.h"
 #include "vpatternconverter.h"
 #include "vdomdocument.h"
 #include "vtoolrecord.h"
@@ -60,6 +61,7 @@
 #include "../vlayout/vtextmanager.h"
 #include "vpatternimage.h"
 #include "vbackgroundpatternimage.h"
+#include "vvalentinasettings.h"
 
 class QDomElement;
 
@@ -2156,6 +2158,10 @@ auto VAbstractPattern::GetBackgroundPatternImage(const QDomElement &element) con
     image.SetZValue(GetParametrUInt(element, AttrZValue, QChar('0')));
     image.SetVisible(GetParametrBool(element, AttrVisible, trueStr));
 
+    VValentinaSettings *settings = VAbstractValApplication::VApp()->ValentinaSettings();
+    image.SetOpacity(GetParametrDouble(element, AttrOpacity,
+                                       QString::number(settings->GetBackgroundImageDefOpacity()/100.)));
+
     QString matrix = GetParametrEmptyString(element, AttrTransform);
     image.SetMatrix(StringToTransfrom(matrix));
 
@@ -2221,6 +2227,8 @@ void VAbstractPattern::WriteBackgroundImage(QDomElement &element, const VBackgro
     SetAttributeOrRemoveIf<bool>(element, AttrHold, image.Hold(), [](bool hold) noexcept {return not hold;});
     SetAttributeOrRemoveIf<qreal>(element, AttrZValue, image.ZValue(), [](qreal z) noexcept {return qFuzzyIsNull(z);});
     SetAttributeOrRemoveIf<bool>(element, AttrVisible, image.Visible(), [](bool visible) noexcept {return visible;});
+    SetAttributeOrRemoveIf<qreal>(element, AttrOpacity, image.Opacity(),
+                                  [](qreal o) noexcept {return VFuzzyComparePossibleNulls(o, 1);});
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/ifc/xml/vabstractpattern.h

@@ -400,6 +400,7 @@ signals:
     void BackgroundImageNameChanged(const QUuid &id);
     void BackgroundImagesZValueChanged();
     void BackgroundImagePositionChanged(const QUuid &id);
+    void BackgroundImageOpacityChanged(const QUuid &id);
 
 public slots:
     virtual void   LiteParseTree(const Document &parse)=0;

src/libs/ifc/xml/vbackgroundpatternimage.cpp

@@ -27,6 +27,7 @@
  *************************************************************************/
 #include "vbackgroundpatternimage.h"
 
+#include "qglobal.h"
 #include "utils.h"
 #include "../vmisc/compatibility.h"
 
@@ -310,3 +311,15 @@ void VBackgroundPatternImage::SetVisible(bool newVisible)
 {
     m_visible = newVisible;
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+auto VBackgroundPatternImage::Opacity() const -> qreal
+{
+    return m_opacity;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void VBackgroundPatternImage::SetOpacity(qreal newOpacity)
+{
+    m_opacity = qBound(0.0, newOpacity, 1.0);
+}

src/libs/ifc/xml/vbackgroundpatternimage.h

@@ -93,6 +93,9 @@ public:
     auto Visible() const -> bool;
     void SetVisible(bool newVisible);
 
+    auto Opacity() const -> qreal;
+    void SetOpacity(qreal newOpacity);
+
 private:
     QUuid           m_id{QUuid::createUuid()};
     QString         m_contentType{};
@@ -104,6 +107,7 @@ private:
     QTransform      m_matrix{};
     bool            m_hold{false};
     bool            m_visible{true};
+    qreal           m_opacity{1.0};
 };
 
 #endif // VBACKGROUNDPATTERNIMAGE_H

src/libs/vmisc/vvalentinasettings.cpp

@@ -44,6 +44,7 @@
 #include "../vmisc/def.h"
 #include "../vmisc/vmath.h"
 #include "../vlayout/vbank.h"
+#include "qglobal.h"
 
 Q_DECLARE_METATYPE(QMarginsF)
 
@@ -60,6 +61,8 @@ Q_GLOBAL_STATIC_WITH_ARGS(const QString, settingPathsLayout, (QLatin1String("pat
 
 Q_GLOBAL_STATIC_WITH_ARGS(const QString, settingPatternKnownMaterials, (QLatin1String("pattern/knownMaterials")))
 Q_GLOBAL_STATIC_WITH_ARGS(const QString, settingPatternRememberMaterials, (QLatin1String("pattern/rememberMaterials")))
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, settingPatternBackgroundImageDefOpacity,
+                          (QLatin1String("pattern/backgroundImageDefOpacity")))
 
 Q_GLOBAL_STATIC_WITH_ARGS(const QString, settingLayoutWidth, (QLatin1String("layout/width")))
 Q_GLOBAL_STATIC_WITH_ARGS(const QString, settingLayoutSorting, (QLatin1String("layout/sorting")))
@@ -956,6 +959,18 @@ void VValentinaSettings::SetFinalMeasurementsSearchOptionMatchCase(bool value)
     setValue(*settingSearchOptionsFinalMeasurementsMatchCase, value);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+int VValentinaSettings::GetBackgroundImageDefOpacity() const
+{
+    return value(*settingPatternBackgroundImageDefOpacity, 100).toInt();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void VValentinaSettings::SetBackgroundImageDefOpacity(int value)
+{
+    setValue(*settingPatternBackgroundImageDefOpacity, qBound(0, value, 100));
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 template<typename T>
 T VValentinaSettings::GetCachedValue(T &cache, const QString &setting, T defValue, T valueMin, T valueMax) const

src/libs/vmisc/vvalentinasettings.h

@@ -234,6 +234,9 @@ public:
     auto GetFinalMeasurementsSearchOptionMatchCase() const ->bool;
     void SetFinalMeasurementsSearchOptionMatchCase(bool value);
 
+    auto GetBackgroundImageDefOpacity() const -> int;
+    void SetBackgroundImageDefOpacity(int value);
+
 private:
     Q_DISABLE_COPY(VValentinaSettings)
 

src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp

@@ -29,12 +29,27 @@
 #include <QWidget>
 
 #include "../vproperty_p.h"
+#include "qstringliteral.h"
+
+namespace
+{
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrMin, (QLatin1String("Min"))) // NOLINT
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrMax, (QLatin1String("Max"))) // NOLINT
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrInteger, (QLatin1String("integer"))) // NOLINT
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrStep, (QLatin1String("Step"))) // NOLINT
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrSuffix, (QLatin1String("Suffix"))) // NOLINT
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrPrecision, (QLatin1String("Precision"))) // NOLINT
+Q_GLOBAL_STATIC_WITH_ARGS(const QString, StrDouble, (QLatin1String("double"))) // NOLINT
+}
 
 const int VPE::VIntegerProperty::StandardMin = -1000000;
 const int VPE::VIntegerProperty::StandardMax = 1000000;
 
 VPE::VIntegerProperty::VIntegerProperty(const QString& name, const QMap<QString, QVariant>& settings)
-    : VProperty(name, QVariant::Int), minValue(StandardMin), maxValue(StandardMax), singleStep(1.0)
+    : VProperty(name, QVariant::Int),
+      m_minValue(StandardMin),
+      m_maxValue(StandardMax),
+      m_singleStep(1.0)
 {
     VProperty::setSettings(settings);
     VProperty::d_ptr->VariantValue.setValue(0);
@@ -42,26 +57,27 @@ VPE::VIntegerProperty::VIntegerProperty(const QString& name, const QMap<QString,
 }
 
 VPE::VIntegerProperty::VIntegerProperty(const QString &name)
-    : VProperty(name), minValue(StandardMin), maxValue(StandardMax), singleStep(1.0)
+    : VProperty(name), m_minValue(StandardMin), m_maxValue(StandardMax), m_singleStep(1.0)
 {
     VProperty::d_ptr->VariantValue.setValue(0);
     VProperty::d_ptr->VariantValue.convert(QVariant::Int);
 }
 
 //! Returns an editor widget, or NULL if it doesn't supply one
-QWidget* VPE::VIntegerProperty::createEditor(QWidget * parent, const QStyleOptionViewItem& options,
+auto VPE::VIntegerProperty::createEditor(QWidget * parent, const QStyleOptionViewItem& options,
-                                             const QAbstractItemDelegate* delegate)
+                                         const QAbstractItemDelegate* delegate) -> QWidget*
 {
     Q_UNUSED(options)
     Q_UNUSED(delegate)
 
-    QSpinBox* tmpEditor = new QSpinBox(parent);
+    auto* tmpEditor = new QSpinBox(parent);
     tmpEditor->setLocale(parent->locale());
-    tmpEditor->setMinimum(static_cast<int>(minValue));
+    tmpEditor->setMinimum(static_cast<int>(m_minValue));
-    tmpEditor->setMaximum(static_cast<int>(maxValue));
+    tmpEditor->setMaximum(static_cast<int>(m_maxValue));
-    tmpEditor->setSingleStep(static_cast<int>(singleStep));
+    tmpEditor->setSingleStep(static_cast<int>(m_singleStep));
     tmpEditor->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     tmpEditor->setValue(VProperty::d_ptr->VariantValue.toInt());
+    tmpEditor->setSuffix(m_suffix);
     connect(tmpEditor, QOverload<int>::of(&QSpinBox::valueChanged), this, &VIntegerProperty::valueChanged);
 
     VProperty::d_ptr->editor = tmpEditor;
@@ -69,62 +85,73 @@ QWidget* VPE::VIntegerProperty::createEditor(QWidget * parent, const QStyleOptio
 }
 
 //! Gets the data from the widget
-QVariant VPE::VIntegerProperty::getEditorData(const QWidget *editor) const
+auto VPE::VIntegerProperty::getEditorData(const QWidget *editor) const -> QVariant
 {
-    const QSpinBox* tmpEditor = qobject_cast<const QSpinBox*>(editor);
+    const auto* tmpEditor = qobject_cast<const QSpinBox*>(editor);
     if (tmpEditor)
     {
         return tmpEditor->value();
     }
 
-    return QVariant(0);
+    return {0};
 }
 
 void VPE::VIntegerProperty::setSetting(const QString& key, const QVariant& value)
 {
-    if (key == QLatin1String("Min"))
+    if (key == *StrMax)
     {
-        maxValue = value.toInt();
+        m_maxValue = value.toInt();
     }
-    else if (key == QLatin1String("Max"))
+    else if (key == *StrMin)
     {
-        minValue = value.toInt();
+        m_minValue = value.toInt();
     }
-    else if (key == QLatin1String("Step"))
+    else if (key == *StrStep)
     {
-        singleStep = value.toInt();
+        m_singleStep = value.toInt();
+    }
+    else if (key == *StrSuffix)
+    {
+        m_suffix = value.toString();
     }
 }
 
-QVariant VPE::VIntegerProperty::getSetting(const QString& key) const
+auto VPE::VIntegerProperty::getSetting(const QString& key) const -> QVariant
 {
-    if (key == QLatin1String("Min"))
+    if (key == *StrMin)
     {
-        return minValue;
+        return m_minValue;
     }
-    if (key == QLatin1String("Max"))
+
+    if (key == *StrMax)
     {
-        return maxValue;
+        return m_maxValue;
     }
-    if (key == QLatin1String("Step"))
+
+    if (key == *StrStep)
     {
-        return singleStep;
+        return m_singleStep;
     }
-    else
+
+    if (key == *StrSuffix)
+    {
+        return m_suffix;
+    }
+
     return VProperty::getSetting(key);
 }
 
-QStringList VPE::VIntegerProperty::getSettingKeys() const
+auto VPE::VIntegerProperty::getSettingKeys() const -> QStringList
 {
-    return (QStringList("Min") << "Max" << "Step");
+    return {*StrMin, *StrMax, *StrStep, *StrSuffix};
 }
 
-QString VPE::VIntegerProperty::type() const
+auto VPE::VIntegerProperty::type() const -> QString
 {
-    return "integer";
+    return *StrInteger;
 }
 
-VPE::VProperty* VPE::VIntegerProperty::clone(bool include_children, VProperty* container) const
+auto VPE::VIntegerProperty::clone(bool include_children, VProperty* container) const -> VPE::VProperty*
 {
     return VProperty::clone(include_children, container ? container : new VIntegerProperty(getName()));
 }
@@ -132,23 +159,31 @@ VPE::VProperty* VPE::VIntegerProperty::clone(bool include_children, VProperty* c
 void VPE::VIntegerProperty::valueChanged(int i)
 {
     Q_UNUSED(i)
-    UserChangeEvent *event = new UserChangeEvent();
+    QCoreApplication::postEvent ( VProperty::d_ptr->editor, new UserChangeEvent() );
-    QCoreApplication::postEvent ( VProperty::d_ptr->editor, event );
 }
 
+const int VPE::VDoubleProperty::StandardMin = -1000000;
+const int VPE::VDoubleProperty::StandardMax = 1000000;
 const double VPE::VDoubleProperty::StandardPrecision = 5;
 
 VPE::VDoubleProperty::VDoubleProperty(const QString& name, const QMap<QString, QVariant>& settings)
-    : VIntegerProperty(name), Precision(static_cast<int>(StandardPrecision))
+    : VProperty(name, QVariant::Double),
+      m_minValue(StandardMin),
+      m_maxValue(StandardMax),
+      m_singleStep(1.0),
+      m_precision(static_cast<int>(StandardPrecision))
 {
     VProperty::setSettings(settings);
     VProperty::d_ptr->VariantValue.setValue(0);
     VProperty::d_ptr->VariantValue.convert(QVariant::Double);
-    VProperty::d_ptr->PropertyVariantType = QVariant::Double;
 }
 
 VPE::VDoubleProperty::VDoubleProperty(const QString &name)
-    : VIntegerProperty(name), Precision(static_cast<int>(StandardPrecision))
+    : VProperty(name),
+      m_minValue(StandardMin),
+      m_maxValue(StandardMax),
+      m_singleStep(1.0),
+      m_precision(static_cast<int>(StandardPrecision))
 {
     VProperty::d_ptr->VariantValue.setValue(0);
     VProperty::d_ptr->VariantValue.convert(QVariant::Double);
@@ -156,90 +191,109 @@ VPE::VDoubleProperty::VDoubleProperty(const QString &name)
 }
 
 //! Returns an editor widget, or NULL if it doesn't supply one
-QWidget* VPE::VDoubleProperty::createEditor(QWidget * parent, const QStyleOptionViewItem& options,
+auto VPE::VDoubleProperty::createEditor(QWidget * parent, const QStyleOptionViewItem& options,
-                                            const QAbstractItemDelegate* delegate)
+                                        const QAbstractItemDelegate* delegate) -> QWidget*
 {
     Q_UNUSED(options)
     Q_UNUSED(delegate)
-    QDoubleSpinBox* tmpEditor = new QDoubleSpinBox(parent);
+    auto* tmpEditor = new QDoubleSpinBox(parent);
     tmpEditor->setLocale(parent->locale());
-    tmpEditor->setMinimum(minValue);
+    tmpEditor->setMinimum(m_minValue);
-    tmpEditor->setMaximum(maxValue);
+    tmpEditor->setMaximum(m_maxValue);
-    tmpEditor->setDecimals(Precision);
+    tmpEditor->setDecimals(m_precision);
-    tmpEditor->setSingleStep(singleStep);
+    tmpEditor->setSingleStep(m_singleStep);
+    tmpEditor->setSuffix(m_suffix);
     tmpEditor->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
     tmpEditor->setValue(VProperty::d_ptr->VariantValue.toDouble());
-    connect(tmpEditor, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this, &VIntegerProperty::valueChanged);
+    connect(tmpEditor, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this, &VDoubleProperty::valueChanged);
 
     VProperty::d_ptr->editor = tmpEditor;
     return VProperty::d_ptr->editor;
 }
 
 //! Gets the data from the widget
-QVariant VPE::VDoubleProperty::getEditorData(const QWidget *editor) const
+auto VPE::VDoubleProperty::getEditorData(const QWidget *editor) const -> QVariant
 {
-    const QDoubleSpinBox* tmpEditor = qobject_cast<const QDoubleSpinBox*>(editor);
+    const auto* tmpEditor = qobject_cast<const QDoubleSpinBox*>(editor);
     if (tmpEditor)
     {
         return tmpEditor->value();
     }
 
-    return QVariant(0);
+    return {0};
 }
 
 void VPE::VDoubleProperty::setSetting(const QString& key, const QVariant& value)
 {
-    if (key == QLatin1String("Min"))
+    if (key == *StrMin)
     {
-        minValue = value.toDouble();
+        m_minValue = value.toDouble();
     }
-    else if (key == QLatin1String("Max"))
+    else if (key == *StrMax)
     {
-        maxValue = value.toDouble();
+        m_maxValue = value.toDouble();
     }
-    else if (key == QLatin1String("Step"))
+    else if (key == *StrStep)
     {
-        singleStep = value.toDouble();
+        m_singleStep = value.toDouble();
     }
-    else if (key == QLatin1String("Precision"))
+    else if (key == *StrSuffix)
     {
-        Precision = value.toInt();
+        m_suffix = value.toString();
+    }
+    else if (key == *StrPrecision)
+    {
+        m_precision = value.toInt();
     }
 }
 
-QVariant VPE::VDoubleProperty::getSetting(const QString& key) const
+auto VPE::VDoubleProperty::getSetting(const QString& key) const -> QVariant
 {
-    if (key == QLatin1String("Min"))
+    if (key == *StrMin)
     {
-        return minValue;
+        return m_minValue;
     }
-    if (key == QLatin1String("Max"))
+
+    if (key == *StrMax)
     {
-        return maxValue;
+        return m_maxValue;
     }
-    if (key == QLatin1String("Step"))
+
+    if (key == *StrStep)
     {
-        return singleStep;
+        return m_singleStep;
     }
-    if (key == QLatin1String("Precision"))
+
+    if (key == *StrSuffix)
     {
-        return Precision;
+        return m_suffix;
     }
-    else
+
+    if (key == *StrPrecision)
+    {
+        return m_precision;
+    }
+
     return VProperty::getSetting(key);
 }
 
-QStringList VPE::VDoubleProperty::getSettingKeys() const
+auto VPE::VDoubleProperty::getSettingKeys() const -> QStringList
 {
-    return (QStringList("Min") << "Max" << "Step" << "Precision");
+    return {*StrMin, *StrMax, *StrStep, *StrSuffix, *StrPrecision};
 }
 
-QString VPE::VDoubleProperty::type() const
+auto VPE::VDoubleProperty::type() const -> QString
 {
-    return "double";
+    return *StrDouble;
 }
 
-VPE::VProperty* VPE::VDoubleProperty::clone(bool include_children, VProperty* container) const
+auto VPE::VDoubleProperty::clone(bool include_children, VProperty* container) const -> VPE::VProperty*
 {
-    return VIntegerProperty::clone(include_children, container ? container : new VDoubleProperty(getName()));
+    return VProperty::clone(include_children, container ? container : new VDoubleProperty(getName()));
+}
+
+void VPE::VDoubleProperty::valueChanged(int i)
+{
+    Q_UNUSED(i)
+    QCoreApplication::postEvent ( VProperty::d_ptr->editor, new UserChangeEvent() );
 }

src/libs/vpropertyexplorer/plugins/vnumberproperty.h

@@ -21,14 +21,11 @@
 #ifndef VNUMBERPROPERTY_H
 #define VNUMBERPROPERTY_H
 
-#include <qcompilerdetection.h>
-#include <stddef.h>
 #include <QMap>
 #include <QMetaObject>
 #include <QObject>
 #include <QString>
 #include <QStringList>
-#include <QStyleOptionViewItem>
 #include <QVariant>
 #include <QtGlobal>
 
@@ -44,7 +41,7 @@ QT_WARNING_DISABLE_GCC("-Wsuggest-final-types")
 //! Class for holding an integer property
 class VPROPERTYEXPLORERSHARED_EXPORT VIntegerProperty : public VProperty
 {
-    Q_OBJECT
+    Q_OBJECT // NOLINT
 public:
     VIntegerProperty(const QString& name, const QMap<QString, QVariant>& settings);
 
@@ -55,51 +52,55 @@ public:
     //! \options Render options
     //! \delegate A pointer to the QAbstractItemDelegate requesting the editor. This can be used to connect signals and
     //! slots.
-    virtual QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& options,
+    auto createEditor(QWidget* parent, const QStyleOptionViewItem& options,
-                                  const QAbstractItemDelegate* delegate) override;
+                      const QAbstractItemDelegate* delegate) -> QWidget* override;
 
     //! Gets the data from the widget
-    virtual QVariant getEditorData(const QWidget* editor) const override;
+    auto getEditorData(const QWidget* editor) const -> QVariant override;
 
     //! Sets the settings. Available settings:
     //!
     //! key: "Min" - value: Minimum number as integer
     //! key: "Max" - value: Maximum number as integer
-    virtual void setSetting(const QString& key, const QVariant& value) override;
+    //! key: "Step" - value: Increment step
+    //! key: "Suffix" - value: Editor's suffix
+    void setSetting(const QString& key, const QVariant& value) override;
 
     //! Get the settings. This function has to be implemented in a subclass in order to have an effect
-    virtual QVariant getSetting(const QString& key) const override;
+    auto getSetting(const QString& key) const -> QVariant override;
 
     //! Returns the list of keys of the property's settings
-    virtual QStringList getSettingKeys() const override;
+    auto getSettingKeys() const -> QStringList override;
 
     //! Returns a string containing the type of the property
-    virtual QString type() const override;
+    auto type() const -> QString override;
 
     //! Clones this property
     //! \param include_children Indicates whether to also clone the children
     //! \param container If a property is being passed here, no new VProperty is being created but instead it is tried
     //! to fill all the data into container. This can also be used when subclassing this function.
     //! \return Returns the newly created property (or container, if it was not NULL)
-    Q_REQUIRED_RESULT virtual VProperty* clone(bool include_children = true,
+    Q_REQUIRED_RESULT auto clone(bool include_children = true,
-                                               VProperty* container = nullptr) const override;
+                                 VProperty* container = nullptr) const -> VProperty* override;
 public slots:
     void valueChanged(int i);
-protected:
+private:
-    double minValue, maxValue, singleStep;
+    Q_DISABLE_COPY(VIntegerProperty) // NOLINT
+
+    double m_minValue;
+    double m_maxValue;
+    double m_singleStep;
+    QString m_suffix{};
 
     static const int StandardMin;// = -1000000;
     static const int StandardMax;// = 1000000;
-
-private:
-    Q_DISABLE_COPY(VIntegerProperty)
 };
 
 
 //! Class for holding a double property
-class VPROPERTYEXPLORERSHARED_EXPORT VDoubleProperty : public VIntegerProperty
+class VPROPERTYEXPLORERSHARED_EXPORT VDoubleProperty : public VProperty
 {
-    Q_OBJECT
+    Q_OBJECT // NOLINT
 public:
     VDoubleProperty(const QString& name, const QMap<QString, QVariant>& settings);
 
@@ -110,46 +111,58 @@ public:
     //! \options Render options
     //! \delegate A pointer to the QAbstractItemDelegate requesting the editor. This can be used to connect signals and
     //! slots.
-    virtual QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& options,
+    auto createEditor(QWidget* parent, const QStyleOptionViewItem& options,
-                                  const QAbstractItemDelegate* delegate) override;
+                      const QAbstractItemDelegate* delegate) -> QWidget* override;
 
     //! Gets the data from the widget
-    virtual QVariant getEditorData(const QWidget* editor) const override;
+    auto getEditorData(const QWidget* editor) const -> QVariant override;
 
     //! Sets the settings. Available settings:
     //!
     //! key: "Min" - value: Minimum number as integer
     //! key: "Max" - value: Maximum number as integer
-    virtual void setSetting(const QString& key, const QVariant& value) override;
+    //! key: "Step" - value: Increment step
+    //! key: "Suffix" - value: Editor's suffix
+    //! key: "Precision" - value: Number of decimals after the decimal point
+    void setSetting(const QString& key, const QVariant& value) override;
 
     //! Get the settings. This function has to be implemented in a subclass in order to have an effect
-    virtual QVariant getSetting(const QString& key) const override;
+    auto getSetting(const QString& key) const -> QVariant override;
 
     //! Returns the list of keys of the property's settings
-    virtual QStringList getSettingKeys() const override;
+    auto getSettingKeys() const -> QStringList override;
 
     //! Returns a string containing the type of the property
-    virtual QString type() const override;
+    auto type() const -> QString override;
 
     //! Clones this property
     //! \param include_children Indicates whether to also clone the children
     //! \param container If a property is being passed here, no new VProperty is being created but instead it is tried
     //! to fill all the data into container. This can also be used when subclassing this function.
     //! \return Returns the newly created property (or container, if it was not NULL)
-    virtual VProperty* clone(bool include_children = true, VProperty* container = NULL) const override;
+    auto clone(bool include_children = true, VProperty* container = nullptr) const -> VProperty* override;
 
-protected:
+public slots:
-    //! Number of decimals after the decimal point
+    void valueChanged(int i);
-    int Precision;
-
-    const static double StandardPrecision;// = 5;
 
 private:
     Q_DISABLE_COPY(VDoubleProperty)
+
+    double m_minValue;
+    double m_maxValue;
+    double m_singleStep;
+    QString m_suffix{};
+
+    //! Number of decimals after the decimal point
+    int m_precision;
+
+    static const int StandardMin;// = -1000000;
+    static const int StandardMax;// = 1000000;
+    const static double StandardPrecision;// = 5;
 };
 
 QT_WARNING_POP
 
-}
+}  // namespace VPE
 
 #endif // VNUMBERPROPERTY_H

src/libs/vtools/tools/backgroundimage/vbackgroundimageitem.cpp

@@ -38,6 +38,7 @@
 #include "../../undocommands/image/renamebackgroundimage.h"
 #include "../../undocommands/image/hidebackgroundimage.h"
 #include "../../undocommands/image/resetbackgroundimage.h"
+#include "../../undocommands/image/opaquebackgroundimage.h"
 #include "../toolsdef.h"
 
 #include <QUndoStack>
@@ -69,6 +70,7 @@ VBackgroundImageItem::VBackgroundImageItem(const VBackgroundPatternImage &image,
             &VBackgroundImageItem::UpdateVisibilityState);
     connect(doc, &VAbstractPattern::BackgroundImagesZValueChanged, this, &VBackgroundImageItem::ZValueChanged);
     connect(doc, &VAbstractPattern::BackgroundImagePositionChanged, this, &VBackgroundImageItem::PositionChanged);
+    connect(doc, &VAbstractPattern::BackgroundImageOpacityChanged, this, &VBackgroundImageItem::OpacityChanged);
 
     InitImage();
 }
@@ -130,6 +132,18 @@ void VBackgroundImageItem::SetVisible(bool visible)
     VAbstractApplication::VApp()->getUndoStack()->push(new HideBackgroundImage(m_image.Id(), not visible, m_doc));
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+auto VBackgroundImageItem::GetOpacity() const -> qreal
+{
+    return m_image.Opacity();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void VBackgroundImageItem::SetOpacity(qreal opacity)
+{
+    VAbstractApplication::VApp()->getUndoStack()->push(new OpaqueBackgroundImage(m_image.Id(), opacity, m_doc));
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void VBackgroundImageItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
@@ -196,6 +210,18 @@ void VBackgroundImageItem::HoldChanged(QUuid id)
     UpdateHoldState();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VBackgroundImageItem::OpacityChanged(const QUuid &id)
+{
+    if (m_image.Id() != id)
+    {
+        return;
+    }
+
+    m_image = m_doc->GetBackgroundImage(m_image.Id());
+    update();
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void VBackgroundImageItem::VisibilityChanged(QUuid id)
 {

src/libs/vtools/tools/backgroundimage/vbackgroundimageitem.h

@@ -63,6 +63,9 @@ public:
     auto IsVisible() const -> bool;
     void SetVisible(bool visible);
 
+    auto GetOpacity() const -> qreal;
+    void SetOpacity(qreal opacity);
+
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
 
 signals:
@@ -77,6 +80,7 @@ public slots:
     void PositionChanged(QUuid id);
     void ImageTransformationChanged(QUuid id);
     void HoldChanged(QUuid id);
+    void OpacityChanged(const QUuid &id);
     void VisibilityChanged(QUuid id);
     void NameChanged(QUuid id);
     void EnableSelection(bool enable);

src/libs/vtools/tools/backgroundimage/vbackgroundpixmapitem.cpp

@@ -93,6 +93,7 @@ void VBackgroundPixmapItem::paint(QPainter *painter, const QStyleOptionGraphicsI
 
     painter->save();
     painter->setTransform(Image().Matrix(), true);
+    painter->setOpacity(Image().Opacity());
 
     painter->drawPixmap(QPointF(), Pixmap());
 

src/libs/vtools/tools/backgroundimage/vbackgroundsvgitem.cpp

@@ -67,6 +67,7 @@ void VBackgroundSVGItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 
     painter->save();
     painter->setTransform(Image().Matrix(), true);
+    painter->setOpacity(Image().Opacity());
 
     renderer->render(painter, QRectF(QPointF(0, 0), renderer->defaultSize()));
 

src/libs/vtools/undocommands/image/opaquebackgroundimage.cpp

@@ -0,0 +1,68 @@
+/************************************************************************
+ **
+ **  @file   opaquebackgroundimage.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   3 2, 2022
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentina project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2022 Valentina project
+ **  <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+#include "opaquebackgroundimage.h"
+#include "../ifc/xml/vbackgroundpatternimage.h"
+
+//---------------------------------------------------------------------------------------------------------------------
+OpaqueBackgroundImage::OpaqueBackgroundImage(QUuid id, qreal opacity, VAbstractPattern *doc, QUndoCommand *parent)
+    : VUndoCommand(QDomElement(), doc, parent),
+      m_id(id),
+      m_opacity(opacity)
+{
+    setText(tr("change a background image opacity"));
+
+    VBackgroundPatternImage image = doc->GetBackgroundImage(m_id);
+
+    m_oldOpacity = image.Opacity();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void OpaqueBackgroundImage::undo()
+{
+    VBackgroundPatternImage image = doc->GetBackgroundImage(m_id);
+
+    if (not image.IsNull())
+    {
+        image.SetOpacity(m_oldOpacity);
+        doc->SaveBackgroundImage(image);
+        emit doc->BackgroundImageOpacityChanged(m_id);
+    }
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void OpaqueBackgroundImage::redo()
+{
+    VBackgroundPatternImage image = doc->GetBackgroundImage(m_id);
+
+    if (not image.IsNull())
+    {
+        image.SetOpacity(m_opacity);
+        doc->SaveBackgroundImage(image);
+        emit doc->BackgroundImageOpacityChanged(m_id);
+    }
+}

src/libs/vtools/undocommands/image/opaquebackgroundimage.h

@@ -0,0 +1,51 @@
+/************************************************************************
+ **
+ **  @file   opaquebackgroundimage.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   3 2, 2022
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentina project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2022 Valentina project
+ **  <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+#ifndef OPAQUEBACKGROUNDIMAGE_H
+#define OPAQUEBACKGROUNDIMAGE_H
+
+#include "../vundocommand.h"
+
+#if QT_VERSION < QT_VERSION_CHECK(5, 13, 0)
+#include "../vmisc/defglobal.h"
+#endif // QT_VERSION < QT_VERSION_CHECK(5, 13, 0)
+
+class OpaqueBackgroundImage : public VUndoCommand
+{
+public:
+    OpaqueBackgroundImage(QUuid id, qreal opacity, VAbstractPattern *doc, QUndoCommand *parent = nullptr);
+    ~OpaqueBackgroundImage() override =default;
+    void undo() override;
+    void redo() override;
+private:
+    Q_DISABLE_COPY_MOVE(OpaqueBackgroundImage)
+    QUuid m_id;
+    qreal m_opacity;
+    qreal m_oldOpacity{1.0};
+};
+
+#endif // OPAQUEBACKGROUNDIMAGE_H

src/libs/vtools/undocommands/undocommands.pri

@@ -11,6 +11,7 @@ HEADERS += \
     $$PWD/image/holdallbackgroundimages.h \
     $$PWD/image/holdbackgroundimage.h \
     $$PWD/image/movebackgroundimage.h \
+    $$PWD/image/opaquebackgroundimage.h \
     $$PWD/image/renamebackgroundimage.h \
     $$PWD/image/resetbackgroundimage.h \
     $$PWD/image/rotatebackgroundimage.h \
@@ -50,6 +51,7 @@ SOURCES += \
     $$PWD/image/holdallbackgroundimages.cpp \
     $$PWD/image/holdbackgroundimage.cpp \
     $$PWD/image/movebackgroundimage.cpp \
+    $$PWD/image/opaquebackgroundimage.cpp \
     $$PWD/image/renamebackgroundimage.cpp \
     $$PWD/image/resetbackgroundimage.cpp \
     $$PWD/image/rotatebackgroundimage.cpp \