Refactoring. Use QChar instead of QString where possible.

--HG--
branch : develop

src/app/tape/tmainwindow.cpp

@@ -3168,7 +3168,7 @@ void TMainWindow::ImportIndividualMeasurements(const QxtCsvModel &csv)
     {
         IndividualMeasurement()
             : name(),
-              value("0"),
+              value('0'),
               fullName(),
               description()
         {}

src/app/valentina/core/vcmdexport.cpp

@@ -100,7 +100,7 @@ void VCommandLine::InitOptions(VCommandLineOptions &options, QMap<QString, int>
                                           translate("VCommandLine", "Number corresponding to output format (default = "
                                                                     "0, export mode):") +
                                                                     DialogSaveLayout::MakeHelpFormatList(),
-                                          translate("VCommandLine", "Format number"), "0"));
+                                          translate("VCommandLine", "Format number"), QChar('0')));
 
     optionsIndex.insert(LONG_OPTION_BINARYDXF, index++);
     options.append(new QCommandLineOption(QStringList() << LONG_OPTION_BINARYDXF,
@@ -144,7 +144,7 @@ void VCommandLine::InitOptions(VCommandLineOptions &options, QMap<QString, int>
                                           translate("VCommandLine", "Number corresponding to layout page template "
                                                                     "(default = 0, export mode):") +
                                                                     DialogLayoutSettings::MakeHelpTemplateList(),
-                                          translate("VCommandLine", "Template number"), "0"));
+                                          translate("VCommandLine", "Template number"), QChar('0')));
 
     optionsIndex.insert(LONG_OPTION_PAGEW, index++);
     options.append(new QCommandLineOption(QStringList() << SINGLE_OPTION_PAGEW << LONG_OPTION_PAGEW,
@@ -259,7 +259,7 @@ void VCommandLine::InitOptions(VCommandLineOptions &options, QMap<QString, int>
     options.append(new QCommandLineOption(QStringList() << SINGLE_OPTION_GROUPPING << LONG_OPTION_GROUPPING,
                                           translate("VCommandLine", "Sets layout groupping cases (export mode): %1.")
                                           .arg(DialogLayoutSettings::MakeGroupsHelp()),
-                                          translate("VCommandLine", "Grouping type"), "2"));
+                                          translate("VCommandLine", "Grouping type"), QChar('2')));
 
     optionsIndex.insert(LONG_OPTION_TEST, index++);
     options.append(new QCommandLineOption(QStringList() << SINGLE_OPTION_TEST << LONG_OPTION_TEST,
@@ -323,7 +323,7 @@ void VCommandLine::InitOptions(VCommandLineOptions &options, QMap<QString, int>
                                                                     "(default = 0, export mode with tiled pdf "
                                                                     "format):") +
                                                                    DialogLayoutSettings::MakeHelpTiledPdfTemplateList(),
-                                          translate("VCommandLine", "Template number"), "0"));
+                                          translate("VCommandLine", "Template number"), QChar('0')));
 
     optionsIndex.insert(LONG_OPTION_TILED_PDF_LEFT_MARGIN, index++);
     options.append(new QCommandLineOption(QStringList() << LONG_OPTION_TILED_PDF_LEFT_MARGIN,

src/app/valentina/dialogs/dialogfinalmeasurements.cpp

@@ -269,7 +269,7 @@ void DialogFinalMeasurements::Add()
 
     VFinalMeasurement m;
     m.name = tr("measurement");
-    m.formula = "0";
+    m.formula = QLatin1Char('0');
 
     m_measurements.append(m);
 

src/app/valentina/dialogs/dialoghistory.cpp

@@ -460,7 +460,7 @@ QString DialogHistory::PointName(quint32 pointId)
 //---------------------------------------------------------------------------------------------------------------------
 quint32 DialogHistory::AttrUInt(const QDomElement &domElement, const QString &name)
 {
-    return doc->GetParametrUInt(domElement, name, "0");
+    return doc->GetParametrUInt(domElement, name, QChar('0'));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/valentina/dialogs/dialogsavelayout.cpp

@@ -563,7 +563,7 @@ void DialogSaveLayout::PathChanged(const QString &text)
 void DialogSaveLayout::ShowExample()
 {
     const LayoutExportFormats currentFormat = Format();
-    ui->labelExample->setText(tr("Example:") + FileName() + QLatin1String("1") + ExportFromatSuffix(currentFormat));
+    ui->labelExample->setText(tr("Example:") + FileName() + QLatin1Char('1') + ExportFromatSuffix(currentFormat));
 
     ui->checkBoxBinaryDXF->setEnabled(false);
     ui->groupBoxPaperFormat->setEnabled(false);

src/app/valentina/xml/vpattern.cpp

@@ -677,7 +677,7 @@ VNodeDetail VPattern::ParseDetailNode(const QDomElement &domElement) const
     const quint32 id = GetParametrUInt(domElement, AttrIdObject, NULL_ID_STR);
     const qreal mx = GetParametrDouble(domElement, AttrMx, "0.0");
     const qreal my = GetParametrDouble(domElement, AttrMy, "0.0");
-    const bool reverse = GetParametrUInt(domElement, VAbstractPattern::AttrNodeReverse, "0");
+    const bool reverse = GetParametrUInt(domElement, VAbstractPattern::AttrNodeReverse, QChar('0'));
     const NodeDetail nodeType = NodeDetail::Contour;
 
     const QString t = GetParametrString(domElement, AttrType, "NodePoint");
@@ -900,7 +900,7 @@ void VPattern::ParseDetailElement(QDomElement &domElement, const Document &parse
 //---------------------------------------------------------------------------------------------------------------------
 void VPattern::ParseDetailInternals(const QDomElement &domElement, VPiece &detail) const
 {
-    const uint version = GetParametrUInt(domElement, AttrVersion, "1");
+    const uint version = GetParametrUInt(domElement, AttrVersion, QChar('1'));
 
     const QStringList tags = QStringList() << TagNodes
                                            << TagData
@@ -935,7 +935,7 @@ void VPattern::ParseDetailInternals(const QDomElement &domElement, VPiece &detai
                         // TODO. Delete if minimal supported version is 0.4.0
                         Q_STATIC_ASSERT_X(VPatternConverter::PatternMinVer < CONVERTER_VERSION_CHECK(0, 4, 0),
                                           "Time to refactor the code.");
-                        const bool closed = GetParametrUInt(domElement, AttrClosed, "1");
+                        const bool closed = GetParametrUInt(domElement, AttrClosed, QChar('1'));
                         const qreal width = GetParametrDouble(domElement, AttrWidth, "0.0");
                         futurePathV1 = QtConcurrent::run(this, &VPattern::ParseDetailNodes, element, width, closed);
                     }
@@ -1047,13 +1047,14 @@ VPieceLabelData VPattern::ParsePieceDataTag(const QDomElement &domElement, VPiec
     ppData.SetRotationWay(GetParametrEmptyString(domElement, AttrRotationWay));
     ppData.SetTilt(GetParametrEmptyString(domElement, AttrTilt));
     ppData.SetFoldPosition(GetParametrEmptyString(domElement, AttrFoldPosition));
-    ppData.SetQuantity(static_cast<int>(GetParametrUInt(domElement, AttrQuantity, "1")));
+    ppData.SetQuantity(static_cast<int>(GetParametrUInt(domElement, AttrQuantity, QChar('1'))));
     ppData.SetOnFold(GetParametrBool(domElement, AttrOnFold, falseStr));
-    ppData.SetPos(QPointF(GetParametrDouble(domElement, AttrMx, "0"), GetParametrDouble(domElement, AttrMy, "0")));
+    ppData.SetPos(QPointF(GetParametrDouble(domElement, AttrMx, QChar('0')),
-    ppData.SetLabelWidth(GetParametrString(domElement, AttrWidth, "1"));
+                          GetParametrDouble(domElement, AttrMy, QChar('0'))));
-    ppData.SetLabelHeight(GetParametrString(domElement, AttrHeight, "1"));
+    ppData.SetLabelWidth(GetParametrString(domElement, AttrWidth, QChar('1')));
-    ppData.SetFontSize(static_cast<int>(GetParametrUInt(domElement, VToolSeamAllowance::AttrFont, "0")));
+    ppData.SetLabelHeight(GetParametrString(domElement, AttrHeight, QChar('1')));
-    ppData.SetRotation(GetParametrString(domElement, AttrRotation, "0"));
+    ppData.SetFontSize(static_cast<int>(GetParametrUInt(domElement, VToolSeamAllowance::AttrFont, QChar('0'))));
+    ppData.SetRotation(GetParametrString(domElement, AttrRotation, QChar('0')));
     ppData.SetCenterPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrCenterPin, NULL_ID_STR));
     ppData.SetTopLeftPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrTopLeftPin, NULL_ID_STR));
     ppData.SetBottomRightPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrBottomRightPin, NULL_ID_STR));
@@ -1065,11 +1066,12 @@ VPieceLabelData VPattern::ParsePieceDataTag(const QDomElement &domElement, VPiec
 VPatternLabelData VPattern::ParsePiecePatternInfo(const QDomElement &domElement, VPatternLabelData patternInfo) const
 {
     patternInfo.SetVisible(GetParametrBool(domElement, AttrVisible, trueStr));
-    patternInfo.SetPos(QPointF(GetParametrDouble(domElement, AttrMx, "0"), GetParametrDouble(domElement, AttrMy, "0")));
+    patternInfo.SetPos(QPointF(GetParametrDouble(domElement, AttrMx, QChar('0')),
-    patternInfo.SetLabelWidth(GetParametrString(domElement, AttrWidth, "1"));
+                               GetParametrDouble(domElement, AttrMy, QChar('0'))));
-    patternInfo.SetLabelHeight(GetParametrString(domElement, AttrHeight, "1"));
+    patternInfo.SetLabelWidth(GetParametrString(domElement, AttrWidth, QChar('1')));
-    patternInfo.SetFontSize(static_cast<int>(GetParametrUInt(domElement, VToolSeamAllowance::AttrFont, "0")));
+    patternInfo.SetLabelHeight(GetParametrString(domElement, AttrHeight, QChar('1')));
-    patternInfo.SetRotation(GetParametrString(domElement, AttrRotation, "0"));
+    patternInfo.SetFontSize(static_cast<int>(GetParametrUInt(domElement, VToolSeamAllowance::AttrFont, QChar('0'))));
+    patternInfo.SetRotation(GetParametrString(domElement, AttrRotation, QChar('0')));
     patternInfo.SetCenterPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrCenterPin, NULL_ID_STR));
     patternInfo.SetTopLeftPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrTopLeftPin, NULL_ID_STR));
     patternInfo.SetBottomRightPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrBottomRightPin, NULL_ID_STR));
@@ -1080,10 +1082,11 @@ VPatternLabelData VPattern::ParsePiecePatternInfo(const QDomElement &domElement,
 VGrainlineData VPattern::ParsePieceGrainline(const QDomElement &domElement, VGrainlineData gGeometry) const
 {
     gGeometry.SetVisible(GetParametrBool(domElement, AttrVisible, falseStr));
-    gGeometry.SetPos(QPointF(GetParametrDouble(domElement, AttrMx, "0"), GetParametrDouble(domElement, AttrMy, "0")));
+    gGeometry.SetPos(QPointF(GetParametrDouble(domElement, AttrMx, QChar('0')),
-    gGeometry.SetLength(GetParametrString(domElement, AttrLength, "1"));
+                             GetParametrDouble(domElement, AttrMy, QChar('0'))));
+    gGeometry.SetLength(GetParametrString(domElement, AttrLength, QChar('1')));
     gGeometry.SetRotation(GetParametrString(domElement, AttrRotation, "90"));
-    gGeometry.SetArrowType(static_cast<ArrowType>(GetParametrUInt(domElement, AttrArrows, "0")));
+    gGeometry.SetArrowType(static_cast<ArrowType>(GetParametrUInt(domElement, AttrArrows, QChar('0'))));
     gGeometry.SetCenterPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrCenterPin, NULL_ID_STR));
     gGeometry.SetTopPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrTopPin, NULL_ID_STR));
     gGeometry.SetBottomPin(GetParametrUInt(domElement, VToolSeamAllowance::AttrBottomPin, NULL_ID_STR));
@@ -1696,7 +1699,7 @@ void VPattern::ParseToolPointOfContact(VMainGraphicsScene *scene, QDomElement &d
         initData.typeCreation = Source::FromFile;
 
         PointsCommonAttributes(domElement, initData);
-        initData.radius = GetParametrString(domElement, AttrRadius, "0");
+        initData.radius = GetParametrString(domElement, AttrRadius, QChar('0'));
         const QString f = initData.radius;//need for saving fixed formula;
         initData.center = GetParametrUInt(domElement, AttrCenter, NULL_ID_STR);
         initData.firstPointId = GetParametrUInt(domElement, AttrFirstPoint, NULL_ID_STR);
@@ -1824,7 +1827,7 @@ void VPattern::ParsePlaceLabel(QDomElement &domElement, const Document &parse)
         initData.angle = GetParametrString(domElement, AttrAngle, "0.0");
         const QString angle = initData.angle;//need for saving fixed formula;
 
-        initData.type = static_cast<PlaceLabelType>(GetParametrUInt(domElement, AttrPlaceLabelType, "0"));
+        initData.type = static_cast<PlaceLabelType>(GetParametrUInt(domElement, AttrPlaceLabelType, QChar('0')));
 
         VToolPlaceLabel::Create(initData);
 
@@ -1959,7 +1962,7 @@ void VPattern::ParseToolCutSpline(VMainGraphicsScene *scene, QDomElement &domEle
         initData.typeCreation = Source::FromFile;
 
         PointsCommonAttributes(domElement, initData);
-        initData.formula = GetParametrString(domElement, AttrLength, "0");
+        initData.formula = GetParametrString(domElement, AttrLength, QChar('0'));
         const QString f = initData.formula;//need for saving fixed formula;
         initData.splineId = GetParametrUInt(domElement, VToolCutSpline::AttrSpline, NULL_ID_STR);
 
@@ -2002,7 +2005,7 @@ void VPattern::ParseToolCutSplinePath(VMainGraphicsScene *scene, QDomElement &do
         initData.typeCreation = Source::FromFile;
 
         PointsCommonAttributes(domElement, initData);
-        initData.formula = GetParametrString(domElement, AttrLength, "0");
+        initData.formula = GetParametrString(domElement, AttrLength, QChar('0'));
         const QString f = initData.formula;//need for saving fixed formula;
         initData.splinePathId = GetParametrUInt(domElement, VToolCutSplinePath::AttrSplinePath, NULL_ID_STR);
 
@@ -2045,7 +2048,7 @@ void VPattern::ParseToolCutArc(VMainGraphicsScene *scene, QDomElement &domElemen
         initData.typeCreation = Source::FromFile;
 
         PointsCommonAttributes(domElement, initData);
-        initData.formula = GetParametrString(domElement, AttrLength, "0");
+        initData.formula = GetParametrString(domElement, AttrLength, QChar('0'));
         const QString f = initData.formula;//need for saving fixed formula;
         initData.arcId = GetParametrUInt(domElement, AttrArc, NULL_ID_STR);
 
@@ -2189,7 +2192,7 @@ void VPattern::ParseToolPointOfIntersectionArcs(VMainGraphicsScene *scene, const
         PointsCommonAttributes(domElement, initData);
         initData.firstArcId = GetParametrUInt(domElement, AttrFirstArc, NULL_ID_STR);
         initData.secondArcId = GetParametrUInt(domElement, AttrSecondArc, NULL_ID_STR);
-        initData.pType = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, "1"));
+        initData.pType = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 
         VToolPointOfIntersectionArcs::Create(initData);
     }
@@ -2224,7 +2227,7 @@ void VPattern::ParseToolPointOfIntersectionCircles(VMainGraphicsScene *scene, QD
         const QString c1R = initData.firstCircleRadius;
         initData.secondCircleRadius = GetParametrString(domElement, AttrC2Radius);
         const QString c2R = initData.secondCircleRadius;
-        initData.crossPoint = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, "1"));
+        initData.crossPoint = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 
         VToolPointOfIntersectionCircles::Create(initData);
         //Rewrite attribute formula. Need for situation when we have wrong formula.
@@ -2263,8 +2266,8 @@ void VPattern::ParseToolPointOfIntersectionCurves(VMainGraphicsScene *scene, QDo
         PointsCommonAttributes(domElement, initData);
         initData.firstCurveId = GetParametrUInt(domElement, AttrCurve1, NULL_ID_STR);
         initData.secondCurveId = GetParametrUInt(domElement, AttrCurve2, NULL_ID_STR);
-        initData.vCrossPoint = static_cast<VCrossCurvesPoint>(GetParametrUInt(domElement, AttrVCrossPoint, "1"));
+        initData.vCrossPoint = static_cast<VCrossCurvesPoint>(GetParametrUInt(domElement, AttrVCrossPoint, QChar('1')));
-        initData.hCrossPoint = static_cast<HCrossCurvesPoint>(GetParametrUInt(domElement, AttrHCrossPoint, "1"));
+        initData.hCrossPoint = static_cast<HCrossCurvesPoint>(GetParametrUInt(domElement, AttrHCrossPoint, QChar('1')));
 
         VToolPointOfIntersectionCurves::Create(initData);
     }
@@ -2297,7 +2300,7 @@ void VPattern::ParseToolPointFromCircleAndTangent(VMainGraphicsScene *scene, QDo
         initData.tangentPointId = GetParametrUInt(domElement, AttrTangent, NULL_ID_STR);
         initData.circleRadius = GetParametrString(domElement, AttrCRadius);
         const QString cR = initData.circleRadius;
-        initData.crossPoint = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, "1"));
+        initData.crossPoint = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 
         VToolPointFromCircleAndTangent::Create(initData);
         //Rewrite attribute formula. Need for situation when we have wrong formula.
@@ -2335,7 +2338,7 @@ void VPattern::ParseToolPointFromArcAndTangent(VMainGraphicsScene *scene, const
         PointsCommonAttributes(domElement, initData);
         initData.arcId = GetParametrUInt(domElement, AttrArc, NULL_ID_STR);
         initData.tangentPointId = GetParametrUInt(domElement, AttrTangent, NULL_ID_STR);
-        initData.crossPoint = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, "1"));
+        initData.crossPoint = static_cast<CrossCirclesPoint>(GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 
         VToolPointFromArcAndTangent::Create(initData);
     }
@@ -2418,7 +2421,7 @@ void VPattern::ParseOldToolSpline(VMainGraphicsScene *scene, const QDomElement &
         const qreal kAsm2 = GetParametrDouble(domElement, AttrKAsm2, "1.0");
         const qreal kCurve = GetParametrDouble(domElement, AttrKCurve, "1.0");
         const QString color = GetParametrString(domElement, AttrColor, ColorBlack);
-        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, "0");
+        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, QChar('0'));
 
         const auto p1 = data->GeometricObject<VPointF>(point1);
         const auto p4 = data->GeometricObject<VPointF>(point4);
@@ -2459,22 +2462,22 @@ void VPattern::ParseToolSpline(VMainGraphicsScene *scene, QDomElement &domElemen
         initData.point1 = GetParametrUInt(domElement, AttrPoint1, NULL_ID_STR);
         initData.point4 = GetParametrUInt(domElement, AttrPoint4, NULL_ID_STR);
 
-        initData.a1 = GetParametrString(domElement, AttrAngle1, "0");
+        initData.a1 = GetParametrString(domElement, AttrAngle1, QChar('0'));
         const QString angle1 = initData.a1;//need for saving fixed formula;
 
-        initData.a2 = GetParametrString(domElement, AttrAngle2, "0");
+        initData.a2 = GetParametrString(domElement, AttrAngle2, QChar('0'));
         const QString angle2 = initData.a2;//need for saving fixed formula;
 
-        initData.l1 = GetParametrString(domElement, AttrLength1, "0");
+        initData.l1 = GetParametrString(domElement, AttrLength1, QChar('0'));
         const QString length1 = initData.l1;//need for saving fixed formula;
 
-        initData.l2 = GetParametrString(domElement, AttrLength2, "0");
+        initData.l2 = GetParametrString(domElement, AttrLength2, QChar('0'));
         const QString length2 = initData.l2;//need for saving fixed formula;
 
         initData.color = GetParametrString(domElement, AttrColor, ColorBlack);
         initData.penStyle = GetParametrString(domElement, AttrPenStyle, TypeLineLine);
-        initData.duplicate = GetParametrUInt(domElement, AttrDuplicate, "0");
+        initData.duplicate = GetParametrUInt(domElement, AttrDuplicate, QChar('0'));
-        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         VToolSpline *spl = VToolSpline::Create(initData);
 
@@ -2534,8 +2537,8 @@ void VPattern::ParseToolCubicBezier(VMainGraphicsScene *scene, const QDomElement
 
         const QString color = GetParametrString(domElement, AttrColor, ColorBlack);
         const QString penStyle = GetParametrString(domElement, AttrPenStyle, TypeLineLine);
-        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, "0");
+        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, QChar('0'));
-        const qreal approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        const qreal approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         auto p1 = data->GeometricObject<VPointF>(point1);
         auto p2 = data->GeometricObject<VPointF>(point2);
@@ -2580,8 +2583,8 @@ void VPattern::ParseOldToolSplinePath(VMainGraphicsScene *scene, const QDomEleme
         ToolsCommonAttributes(domElement, initData.id);
         const qreal kCurve = GetParametrDouble(domElement, AttrKCurve, "1.0");
         const QString color = GetParametrString(domElement, AttrColor, ColorBlack);
-        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, "0");
+        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, QChar('0'));
-        const qreal approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        const qreal approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         QVector<VFSplinePoint> points;
 
@@ -2595,7 +2598,7 @@ void VPattern::ParseOldToolSplinePath(VMainGraphicsScene *scene, const QDomEleme
                 if (element.tagName() == AttrPathPoint)
                 {
                     const qreal kAsm1 = GetParametrDouble(element, AttrKAsm1, "1.0");
-                    const qreal angle = GetParametrDouble(element, AttrAngle, "0");
+                    const qreal angle = GetParametrDouble(element, AttrAngle, QChar('0'));
                     const qreal kAsm2 = GetParametrDouble(element, AttrKAsm2, "1.0");
                     const quint32 pSpline = GetParametrUInt(element, AttrPSpline, NULL_ID_STR);
                     const VPointF p = *data->GeometricObject<VPointF>(pSpline);
@@ -2649,8 +2652,8 @@ void VPattern::ParseToolSplinePath(VMainGraphicsScene *scene, const QDomElement
         ToolsCommonAttributes(domElement, initData.id);
         initData.color = GetParametrString(domElement, AttrColor, ColorBlack);
         initData.penStyle = GetParametrString(domElement, AttrPenStyle, TypeLineLine);
-        initData.duplicate = GetParametrUInt(domElement, AttrDuplicate, "0");
+        initData.duplicate = GetParametrUInt(domElement, AttrDuplicate, QChar('0'));
-        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         const QDomNodeList nodeList = domElement.childNodes();
         const qint32 num = nodeList.size();
@@ -2659,10 +2662,10 @@ void VPattern::ParseToolSplinePath(VMainGraphicsScene *scene, const QDomElement
             const QDomElement element = nodeList.at(i).toElement();
             if (not element.isNull() && element.tagName() == AttrPathPoint)
             {
-                initData.a1.append(GetParametrString(element, AttrAngle1, "0"));
+                initData.a1.append(GetParametrString(element, AttrAngle1, QChar('0')));
-                initData.a2.append(GetParametrString(element, AttrAngle2, "0"));
+                initData.a2.append(GetParametrString(element, AttrAngle2, QChar('0')));
-                initData.l1.append(GetParametrString(element, AttrLength1, "0"));
+                initData.l1.append(GetParametrString(element, AttrLength1, QChar('0')));
-                initData.l2.append(GetParametrString(element, AttrLength2, "0"));
+                initData.l2.append(GetParametrString(element, AttrLength2, QChar('0')));
                 const quint32 pSpline = GetParametrUInt(element, AttrPSpline, NULL_ID_STR);
                 initData.points.append(pSpline);
 
@@ -2741,8 +2744,8 @@ void VPattern::ParseToolCubicBezierPath(VMainGraphicsScene *scene, const QDomEle
         ToolsCommonAttributes(domElement, initData.id);
         const QString color = GetParametrString(domElement, AttrColor, ColorBlack);
         const QString penStyle = GetParametrString(domElement, AttrPenStyle, TypeLineLine);
-        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, "0");
+        const quint32 duplicate = GetParametrUInt(domElement, AttrDuplicate, QChar('0'));
-        const qreal approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        const qreal approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         QVector<VPointF> points;
 
@@ -2906,7 +2909,7 @@ void VPattern::ParseToolArc(VMainGraphicsScene *scene, QDomElement &domElement,
         const QString f2Fix = initData.f2;//need for saving fixed formula;
         initData.color = GetParametrString(domElement, AttrColor, ColorBlack);
         initData.penStyle = GetParametrString(domElement, AttrPenStyle, TypeLineLine);
-        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         VToolArc::Create(initData);
         //Rewrite attribute formula. Need for situation when we have wrong formula.
@@ -2958,11 +2961,11 @@ void VPattern::ParseToolEllipticalArc(VMainGraphicsScene *scene, QDomElement &do
         const QString f1Fix = initData.f1;//need for saving fixed formula;
         initData.f2 = GetParametrString(domElement, AttrAngle2, "270");
         const QString f2Fix = initData.f2;//need for saving fixed formula;
-        initData.rotationAngle = GetParametrString(domElement, AttrRotationAngle, "0");
+        initData.rotationAngle = GetParametrString(domElement, AttrRotationAngle, QChar('0'));
         const QString frotationFix = initData.rotationAngle;//need for saving fixed formula;
         initData.color = GetParametrString(domElement, AttrColor, ColorBlack);
         initData.penStyle = GetParametrString(domElement, AttrPenStyle, TypeLineLine);
-        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, "0");
+        initData.approximationScale = GetParametrDouble(domElement, AttrAScale, QChar('0'));
 
         VToolEllipticalArc::Create(initData);
         //Rewrite attribute formula. Need for situation when we have wrong formula.
@@ -3216,7 +3219,7 @@ void VPattern::ParseToolFlippingByAxis(VMainGraphicsScene *scene, QDomElement &d
 
         ToolsCommonAttributes(domElement, initData.id);
         initData.originPointId = GetParametrUInt(domElement, AttrCenter, NULL_ID_STR);
-        initData.axisType = static_cast<AxisType>(GetParametrUInt(domElement, AttrAxisType, "1"));
+        initData.axisType = static_cast<AxisType>(GetParametrUInt(domElement, AttrAxisType, QChar('1')));
         initData.suffix = GetParametrString(domElement, AttrSuffix, QString());
 
         VAbstractOperation::ExtractData(domElement, initData);
@@ -3247,11 +3250,11 @@ void VPattern::ParseToolMove(VMainGraphicsScene *scene, QDomElement &domElement,
         initData.typeCreation = Source::FromFile;
 
         ToolsCommonAttributes(domElement, initData.id);
-        initData.formulaAngle = GetParametrString(domElement, AttrAngle, "0");
+        initData.formulaAngle = GetParametrString(domElement, AttrAngle, QChar('0'));
         const QString a = initData.formulaAngle;//need for saving fixed formula;
-        initData.formulaRotationAngle = GetParametrString(domElement, AttrRotationAngle, "0");
+        initData.formulaRotationAngle = GetParametrString(domElement, AttrRotationAngle, QChar('0'));
         const QString r = initData.formulaRotationAngle;//need for saving fixed formula;
-        initData.formulaLength = GetParametrString(domElement, AttrLength, "0");
+        initData.formulaLength = GetParametrString(domElement, AttrLength, QChar('0'));
         const QString len = initData.formulaLength;//need for saving fixed formula;
         initData.suffix = GetParametrString(domElement, AttrSuffix, QString());
         initData.rotationOrigin = GetParametrUInt(domElement, AttrCenter, NULL_ID_STR);
@@ -3315,8 +3318,8 @@ QDomElement VPattern::MakeEmptyIncrement(const QString &name)
 {
     QDomElement element = createElement(TagIncrement);
     SetAttribute(element, AttrName, name);
-    SetAttribute(element, AttrFormula, QString("0"));
+    SetAttribute(element, AttrFormula, QChar('0'));
-    SetAttribute(element, AttrDescription, QString(QString()));
+    SetAttribute(element, AttrDescription, QString());
     return element;
 }
 
@@ -3644,7 +3647,7 @@ void VPattern::ParseToolsElement(VMainGraphicsScene *scene, const QDomElement &d
                 VToolUnionDetailsInitData initData;
                 initData.indexD1 = GetParametrUInt(domElement, VToolUnionDetails::AttrIndexD1, "-1");
                 initData.indexD2 = GetParametrUInt(domElement, VToolUnionDetails::AttrIndexD2, "-1");
-                initData.version = GetParametrUInt(domElement, AttrVersion, "1");
+                initData.version = GetParametrUInt(domElement, AttrVersion, QChar('1'));
                 initData.scene = scene;
                 initData.doc = this;
                 initData.data = data;
@@ -3732,7 +3735,7 @@ void VPattern::ParsePathElement(VMainGraphicsScene *scene, QDomElement &domEleme
 
         if (initData.path.GetType() == PiecePathType::InternalPath)
         {
-            initData.path.SetVisibilityTrigger(GetParametrString(domElement, AttrVisible, "1"));
+            initData.path.SetVisibilityTrigger(GetParametrString(domElement, AttrVisible, QChar('1')));
         }
 
         VToolPiecePath::Create(initData);
@@ -3766,7 +3769,7 @@ void VPattern::ParseIncrementsElement(const QDomNode &node, const Document &pars
                 {
                     const QString name = GetParametrString(domElement, AttrName, QString());
                     const QString desc = GetParametrEmptyString(domElement, AttrDescription);
-                    const QString formula = GetParametrString(domElement, AttrFormula, "0");
+                    const QString formula = GetParametrString(domElement, AttrFormula, QChar('0'));
                     bool ok = false;
                     const qreal value = EvalFormula(data, formula, &ok);
 
@@ -4077,7 +4080,7 @@ int VPattern::GetDefCustomHeight() const
         const QDomElement domElement = domNode.toElement();
         if (domElement.isNull() == false)
         {
-            return static_cast<int>(GetParametrUInt(domElement, AttrDefHeight, QStringLiteral("0")));
+            return static_cast<int>(GetParametrUInt(domElement, AttrDefHeight, QChar('0')));
         }
         else
         {
@@ -4136,7 +4139,7 @@ int VPattern::GetDefCustomSize() const
         const QDomElement domElement = domNode.toElement();
         if (domElement.isNull() == false)
         {
-            return static_cast<int>(GetParametrUInt(domElement, AttrDefSize, QStringLiteral("0")));
+            return static_cast<int>(GetParametrUInt(domElement, AttrDefSize, QChar('0')));
         }
         else
         {

src/libs/ifc/ifcdef.h

@@ -47,7 +47,7 @@ extern const QString CustomIncrSign;
 static const quint32 null_id = 0;
 
 #define NULL_ID null_id//use this value for initialization variables that keeps id values. 0 mean uknown id value.
-#define NULL_ID_STR "0"
+#define NULL_ID_STR QChar('0')
 
 // Detect whether the compiler supports C++11 noexcept exception specifications.
 #  if   defined(__clang__)

src/libs/ifc/xml/vabstractpattern.cpp

@@ -634,7 +634,7 @@ QVector<CustomSARecord> VAbstractPattern::ParsePieceCSARecords(const QDomElement
             record.reverse = GetParametrBool(element, VAbstractPattern::AttrNodeReverse, falseStr);
             record.includeType = static_cast<PiecePathIncludeType>(GetParametrUInt(element,
                                                                                    VAbstractPattern::AttrIncludeAs,
-                                                                                   "1"));
+                                                                                   QChar('1')));
             records.append(record);
         }
     }
@@ -685,14 +685,15 @@ QVector<quint32> VAbstractPattern::ParsePiecePointRecords(const QDomElement &dom
 VPieceNode VAbstractPattern::ParseSANode(const QDomElement &domElement)
 {
     const quint32 id = VDomDocument::GetParametrUInt(domElement, AttrIdObject, NULL_ID_STR);
-    const bool reverse = VDomDocument::GetParametrUInt(domElement, VAbstractPattern::AttrNodeReverse, "0");
+    const bool reverse = VDomDocument::GetParametrUInt(domElement, VAbstractPattern::AttrNodeReverse, QChar('0'));
     const bool excluded = VDomDocument::GetParametrBool(domElement, VAbstractPattern::AttrNodeExcluded, falseStr);
     const bool uniqeness = VDomDocument::GetParametrBool(domElement, VAbstractPattern::AttrCheckUniqueness, trueStr);
     const QString saBefore = VDomDocument::GetParametrString(domElement, VAbstractPattern::AttrSABefore,
                                                              currentSeamAllowance);
     const QString saAfter = VDomDocument::GetParametrString(domElement, VAbstractPattern::AttrSAAfter,
                                                             currentSeamAllowance);
-    const PieceNodeAngle angle = static_cast<PieceNodeAngle>(VDomDocument::GetParametrUInt(domElement, AttrAngle, "0"));
+    const PieceNodeAngle angle = static_cast<PieceNodeAngle>(VDomDocument::GetParametrUInt(domElement, AttrAngle,
+                                                                                           QChar('0')));
 
     const bool passmark = VDomDocument::GetParametrBool(domElement, VAbstractPattern::AttrNodePassmark, falseStr);
     const PassmarkLineType passmarkLine = StringToPassmarkLineType(VDomDocument::GetParametrString(domElement,
@@ -2110,7 +2111,7 @@ QMap<int, QString> VAbstractPattern::GetMaterials(const QDomElement &element) co
         {
             if (tagMaterial.tagName() == TagMaterial)
             {
-                const int number = static_cast<int>(GetParametrUInt(tagMaterial, AttrNumber, "0"));
+                const int number = static_cast<int>(GetParametrUInt(tagMaterial, AttrNumber, QChar('0')));
                 const QString name = GetParametrEmptyString(tagMaterial, AttrName);
 
                 if (number > 0 && number <= userMaterialPlaceholdersQuantity)
@@ -2159,7 +2160,7 @@ QVector<VFinalMeasurement> VAbstractPattern::GetFMeasurements(const QDomElement
                 VFinalMeasurement m;
 
                 m.name = GetParametrString(tagFMeasurement, AttrName, tr("measurement"));
-                m.formula = GetParametrString(tagFMeasurement, AttrFormula, "0");
+                m.formula = GetParametrString(tagFMeasurement, AttrFormula, QChar('0'));
                 m.description = GetParametrEmptyString(tagFMeasurement, AttrDescription);
 
                 measurements.append(m);
@@ -2352,7 +2353,7 @@ QMap<quint32, QPair<QString, bool> > VAbstractPattern::GetGroups()
                     {
                         if (group.tagName() == TagGroup)
                         {
-                            const quint32 id = GetParametrUInt(group, AttrId, "0");
+                            const quint32 id = GetParametrUInt(group, AttrId, QChar('0'));
                             const bool visible = GetParametrBool(group, AttrVisible, trueStr);
                             const QString name = GetParametrString(group, AttrName, tr("New group"));
 
@@ -2411,7 +2412,7 @@ QMap<quint32, QString> VAbstractPattern::GetGroupsContainingItem(quint32 toolId,
                         bool groupHasItem = GroupHasItem(group, toolId, objectId);
                         if((containItem && groupHasItem) || (not containItem && not groupHasItem))
                         {
-                            const quint32 groupId = GetParametrUInt(group, AttrId, "0");
+                            const quint32 groupId = GetParametrUInt(group, AttrId, QChar('0'));
                             const QString name = GetParametrString(group, AttrName, tr("New group"));
                             data.insert(groupId, name);
                         }
@@ -2448,8 +2449,8 @@ bool VAbstractPattern::GroupHasItem(const QDomElement &groupDomElement, quint32
             const QDomElement item = itemNode.toElement();
             if (item.isNull() == false)
             {
-                quint32 toolIdIterate= GetParametrUInt(item, AttrTool, "0");
+                quint32 toolIdIterate= GetParametrUInt(item, AttrTool, QChar('0'));
-                quint32 objectIdIterate= GetParametrUInt(item, AttrObject, "0");
+                quint32 objectIdIterate= GetParametrUInt(item, AttrObject, QChar('0'));
 
                 if(toolIdIterate == toolId && objectIdIterate == objectId)
                 {
@@ -2538,8 +2539,8 @@ QDomElement VAbstractPattern::RemoveItemFromGroup(quint32 toolId, quint32 object
                 const QDomElement item = itemNode.toElement();
                 if (item.isNull() == false)
                 {
-                    quint32 toolIdIterate= GetParametrUInt(item, AttrTool, "0");
+                    quint32 toolIdIterate= GetParametrUInt(item, AttrTool, QChar('0'));
-                    quint32 objectIdIterate= GetParametrUInt(item, AttrObject, "0");
+                    quint32 objectIdIterate= GetParametrUInt(item, AttrObject, QChar('0'));
 
                     if(toolIdIterate == toolId && objectIdIterate == objectId)
                     {

src/libs/ifc/xml/vdomdocument.cpp

@@ -378,8 +378,8 @@ bool VDomDocument::GetParametrBool(const QDomElement &domElement, const QString
 
         const QStringList bools = QStringList() << QLatin1String("true")
                                                 << QLatin1String("false")
-                                                << QLatin1String("1")
+                                                << QChar('1')
-                                                << QLatin1String("0");
+                                                << QChar('0');
         switch (bools.indexOf(parametr))
         {
             case 0: // true
@@ -956,8 +956,8 @@ QVector<VLabelTemplateLine> VDomDocument::GetLabelTemplate(const QDomElement &el
                 line.line = GetParametrString(tagLine, AttrText, tr("<empty>"));
                 line.bold = GetParametrBool(tagLine, AttrBold, falseStr);
                 line.italic = GetParametrBool(tagLine, AttrItalic, falseStr);
-                line.alignment = static_cast<int>(GetParametrUInt(tagLine, AttrAlignment, "0"));
+                line.alignment = static_cast<int>(GetParametrUInt(tagLine, AttrAlignment, QChar('0')));
-                line.fontSizeIncrement = static_cast<int>(GetParametrUInt(tagLine, AttrFSIncrement, "0"));
+                line.fontSizeIncrement = static_cast<int>(GetParametrUInt(tagLine, AttrFSIncrement, QChar('0')));
                 lines.append(line);
             }
             tagLine = tagLine.nextSiblingElement(TagLine);

src/libs/ifc/xml/vdomdocument.h

@@ -181,6 +181,13 @@ inline void VDomDocument::SetAttribute<QString>(QDomElement &domElement, const Q
     domElement.setAttribute(name, value);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+template <>
+inline void VDomDocument::SetAttribute<QChar>(QDomElement &domElement, const QString &name, const QChar &value) const
+{
+    domElement.setAttribute(name, value);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 template <>
 inline void VDomDocument::SetAttribute<bool>(QDomElement &domElement, const QString &name, const bool &value) const

src/libs/ifc/xml/vpatternconverter.cpp

@@ -2109,10 +2109,10 @@ void VPatternConverter::TagDetailToV0_4_0()
 
         if (not dom.isNull())
         {
-            dom.setAttribute(*strSeamAllowance, dom.attribute(*strSupplement, "0"));
+            dom.setAttribute(*strSeamAllowance, dom.attribute(*strSupplement, QChar('0')));
             dom.removeAttribute(*strSupplement);
 
-            dom.setAttribute(*strVersion, "1");
+            dom.setAttribute(*strVersion, '1');
 
             const QStringList tags = QStringList() << *strNode << *strData << *strPatternInfo << *strGrainline;
 
@@ -2137,17 +2137,17 @@ void VPatternConverter::TagDetailToV0_4_0()
 
                             if (element.hasAttribute(*strReverse))
                             {
-                                tagNode.setAttribute(*strReverse, element.attribute(*strReverse, "0"));
+                                tagNode.setAttribute(*strReverse, element.attribute(*strReverse, QChar('0')));
                             }
 
                             if (element.hasAttribute(*strMx))
                             {
-                                tagNode.setAttribute(*strMx, element.attribute(*strMx, "0"));
+                                tagNode.setAttribute(*strMx, element.attribute(*strMx, QChar('0')));
                             }
 
                             if (element.hasAttribute(*strMy))
                             {
-                                tagNode.setAttribute(*strMy, element.attribute(*strMy, "0"));
+                                tagNode.setAttribute(*strMy, element.attribute(*strMy, QChar('0')));
                             }
 
                             tagNode.setAttribute(*strType, element.attribute(*strType, QString()));
@@ -2200,7 +2200,7 @@ QDomElement VPatternConverter::GetUnionDetailNodesV0_4_0(const QDomElement &deta
 
                 if (node.hasAttribute(*strReverse))
                 {
-                    tagNode.setAttribute(*strReverse, node.attribute(*strReverse, "0"));
+                    tagNode.setAttribute(*strReverse, node.attribute(*strReverse, QChar('0')));
                 }
 
                 tagNode.setAttribute(*strType, node.attribute(*strType, QString()));
@@ -2263,7 +2263,7 @@ void VPatternConverter::LabelTagToV0_4_4(const QString &tagName)
     {
         if (dom.hasAttribute(attribute))
         {
-            QString valStr = dom.attribute(attribute, "1");
+            QString valStr = dom.attribute(attribute, QChar('1'));
             bool ok = false;
             qreal val = valStr.toDouble(&ok);
             if (not ok)
@@ -2430,7 +2430,7 @@ void VPatternConverter::PortPieceLabelstoV0_6_0()
 
             QString line;
 
-            const int material = static_cast<int>(GetParametrUInt(domMCP, *strMaterial, "0"));
+            const int material = static_cast<int>(GetParametrUInt(domMCP, *strMaterial, QChar('0')));
             switch(material)
             {
                 case 0:
@@ -2453,7 +2453,7 @@ void VPatternConverter::PortPieceLabelstoV0_6_0()
 
             line.append(", %wCut% ");
 
-            const int cutNumber = static_cast<int>(GetParametrUInt(domMCP, *strCutNumber, "1"));
+            const int cutNumber = static_cast<int>(GetParametrUInt(domMCP, *strCutNumber, QChar('1')));
 
             if (firstLine)
             {
@@ -2474,7 +2474,7 @@ void VPatternConverter::PortPieceLabelstoV0_6_0()
                 }
             }
 
-            if (GetParametrUInt(domMCP, *strPlacement, "0") == 1)
+            if (GetParametrUInt(domMCP, *strPlacement, QChar('0')) == 1)
             {
                 line.append(" %wOnFold%");
             }

src/libs/qmuparser/qmuparserbytecode.cpp

@@ -194,7 +194,7 @@ void QmuParserByteCode::ConstantFolding(ECmdCode a_Oprt)
         #if defined(MUP_MATH_EXCEPTIONS)
             if (y==0)
             {
-                throw qmuParserError(ecDIV_BY_ZERO, "0");
+                throw qmuParserError(ecDIV_BY_ZERO, QLatin1Char('0'));
             }
         #endif
             x = x / y;

src/libs/vdxf/dxiface.cpp

@@ -239,19 +239,19 @@ void dx_iface::AddAAMALayers()
 {
     DRW_Layer layer;
 
-    layer.name = "1";// CUT, OUTLINE
+    layer.name = '1';// CUT, OUTLINE
     layer.color = DRW::black;
     cData.layers.push_back(layer);
 
-    layer.name = "8";// DRAW, INK
+    layer.name = '8';// DRAW, INK
     layer.color = DRW::black;
     cData.layers.push_back(layer);
 
-    layer.name = "7";// GRAINLINE
+    layer.name = '7';// GRAINLINE
     layer.color = DRW::black;
     cData.layers.push_back(layer);
 
-//    layer.name = "6";// MIRROR LINES
+//    layer.name = '6';// MIRROR LINES
 //    layer.color = DRW::black;
 //    cData.layers.push_back(layer);
 
@@ -263,7 +263,7 @@ void dx_iface::AddAAMALayers()
 //    layer.color = DRW::black;
 //    cData.layers.push_back(layer);
 
-    layer.name = "4";// NOTCH
+    layer.name = '4';// NOTCH
     layer.color = DRW::black;
     cData.layers.push_back(layer);
 
@@ -285,7 +285,7 @@ void dx_iface::AddAAMAHeaderData()
 void dx_iface::AddDefLayers()
 {
     DRW_Layer defLayer;
-    defLayer.name = "0";
+    defLayer.name = '0';
     defLayer.color = DRW::black;             // default color
     defLayer.lWeight = DRW_LW_Conv::width03; // default width
     cData.layers.push_back(defLayer);

src/libs/vdxf/libdxfrw/drw_entities.h

@@ -516,7 +516,7 @@ public:
           flags(0)
     {
         eType = DRW::BLOCK;
-        layer = "0";
+        layer = '0';
     }
 
     virtual void applyExtrusion(){}

src/libs/vdxf/libdxfrw/libdxfrw.cpp

@@ -1481,7 +1481,7 @@ bool dxfRW::writeTables() {
     iface->writeLayers();
     if (!wlayer0 && version > DRW::AC1009) {
         DRW_Layer lay0;
-        lay0.name = "0";
+        lay0.name = '0';
         writeLayer(&lay0);
     }
     writer->writeString(0, "ENDTAB");
@@ -1766,7 +1766,7 @@ bool dxfRW::writeObjects() {
         writer->writeString(0, "IMAGEDEF");
         writer->writeString(5, toHexStr(static_cast<int>(id->handle)) );
         if (version > DRW::AC1014) {
-//            writer->writeString(330, "0"); handle to DICTIONARY
+//            writer->writeString(330, '0'); handle to DICTIONARY
         }
         writer->writeString(102, "{ACAD_REACTORS");
         std::map<std::string, std::string>::iterator it;

src/libs/vdxf/vdxfengine.cpp

@@ -153,7 +153,7 @@ void VDxfEngine::drawPath(const QPainterPath &path)
         if (m_version > DRW::AC1009)
         { // Use lwpolyline
             DRW_LWPolyline *poly = new DRW_LWPolyline();
-            poly->layer = "0";
+            poly->layer = '0';
             poly->color = getPenColor();
             poly->lWeight = DRW_LW_Conv::widthByLayer;
             poly->lineType = getPenStyle();
@@ -176,7 +176,7 @@ void VDxfEngine::drawPath(const QPainterPath &path)
         else
         { // Use polyline
             DRW_Polyline *poly = new DRW_Polyline();
-            poly->layer = "0";
+            poly->layer = '0';
             poly->color = getPenColor();
             poly->lWeight = DRW_LW_Conv::widthByLayer;
             poly->lineType = getPenStyle();
@@ -211,7 +211,7 @@ void VDxfEngine::drawLines(const QLineF * lines, int lineCount)
                                     FromPixel(getSize().height() - p1.y(), varInsunits), 0);
         line->secPoint =  DRW_Coord(FromPixel(p2.x(), varInsunits),
                                     FromPixel(getSize().height() - p2.y(), varInsunits), 0);
-        line->layer = "0";
+        line->layer = '0';
         line->color = getPenColor();
         line->lWeight = DRW_LW_Conv::widthByLayer;
         line->lineType = getPenStyle();
@@ -239,7 +239,7 @@ void VDxfEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawM
     if (m_version > DRW::AC1009)
     { // Use lwpolyline
         DRW_LWPolyline *poly = new DRW_LWPolyline();
-        poly->layer = "0";
+        poly->layer = '0';
         poly->color = getPenColor();
         poly->lWeight = DRW_LW_Conv::widthByLayer;
         poly->lineType = getPenStyle();
@@ -263,7 +263,7 @@ void VDxfEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawM
     else
     { // Use polyline
         DRW_Polyline *poly = new DRW_Polyline();
-        poly->layer = "0";
+        poly->layer = '0';
         poly->color = getPenColor();
         poly->lWeight = DRW_LW_Conv::widthByLayer;
         poly->lineType = getPenStyle();
@@ -325,7 +325,7 @@ void VDxfEngine::drawEllipse(const QRectF & rect)
     ellipse->staparam = 0;
     ellipse->endparam = 2*M_PI;
 
-    ellipse->layer = "0";
+    ellipse->layer = '0';
     ellipse->color = getPenColor();
     ellipse->lWeight = DRW_LW_Conv::widthByLayer;
     ellipse->lineType = getPenStyle();
@@ -359,7 +359,7 @@ void VDxfEngine::drawTextItem(const QPointF & p, const QTextItem & textItem)
         textBuffer->style = fontStyle;
         textBuffer->angle = -rotationAngle;
 
-        textBuffer->layer = "0";
+        textBuffer->layer = '0';
         textBuffer->color = getPenColor();
         textBuffer->lWeight = DRW_LW_Conv::widthByLayer;
         textBuffer->lineType = getPenStyle();
@@ -632,7 +632,7 @@ bool VDxfEngine::ExportToAAMA(const QVector<VLayoutPiece> &details)
         }
 
         detailBlock->name = blockName.toStdString();
-        detailBlock->layer = "1";
+        detailBlock->layer = '1';
 
         ExportAAMAOutline(detailBlock, detail);
         ExportAAMADraw(detailBlock, detail);
@@ -646,7 +646,7 @@ bool VDxfEngine::ExportToAAMA(const QVector<VLayoutPiece> &details)
 
         DRW_Insert *insert = new DRW_Insert();
         insert->name = blockName.toStdString();
-        insert->layer = "1";
+        insert->layer = '1';
 
         input->AddEntity(insert);
     }
@@ -667,7 +667,7 @@ void VDxfEngine::ExportAAMAOutline(dx_ifaceBlock *detailBlock, const VLayoutPiec
         outline = detail.GetContourPoints();
     }
 
-    DRW_Entity *e = AAMAPolygon(outline, "1", true);
+    DRW_Entity *e = AAMAPolygon(outline, QChar('1'), true);
     if (e)
     {
         detailBlock->ent.push_back(e);
@@ -680,7 +680,7 @@ void VDxfEngine::ExportAAMADraw(dx_ifaceBlock *detailBlock, const VLayoutPiece &
     if (not detail.IsHideMainPath())
     {
         QVector<QPointF> poly = detail.GetContourPoints();
-        if (DRW_Entity *e = AAMAPolygon(poly, "8", true))
+        if (DRW_Entity *e = AAMAPolygon(poly, QChar('8'), true))
         {
             detailBlock->ent.push_back(e);
         }
@@ -689,7 +689,7 @@ void VDxfEngine::ExportAAMADraw(dx_ifaceBlock *detailBlock, const VLayoutPiece &
     const QVector<QVector<QPointF>> drawIntCut = detail.InternalPathsForCut(false);
     for(auto &intCut : drawIntCut)
     {
-        if (DRW_Entity *e = AAMAPolygon(intCut, "8", false))
+        if (DRW_Entity *e = AAMAPolygon(intCut, QChar('8'), false))
         {
             detailBlock->ent.push_back(e);
         }
@@ -702,7 +702,7 @@ void VDxfEngine::ExportAAMADraw(dx_ifaceBlock *detailBlock, const VLayoutPiece &
         {
             for(auto &p : qAsConst(label.shape))
             {
-                if (DRW_Entity *e = AAMAPolygon(p, "8", false))
+                if (DRW_Entity *e = AAMAPolygon(p, QChar('8'), false))
                 {
                     detailBlock->ent.push_back(e);
                 }
@@ -732,7 +732,7 @@ void VDxfEngine::ExportAAMANotch(dx_ifaceBlock *detailBlock, const VLayoutPiece
         const QVector<QLineF> passmarks = detail.GetPassmarks();
         for(auto passmark : passmarks)
         {
-            if (DRW_Entity *e = AAMALine(passmark, "4"))
+            if (DRW_Entity *e = AAMALine(passmark, QChar('4')))
             {
                 detailBlock->ent.push_back(e);
             }
@@ -746,7 +746,7 @@ void VDxfEngine::ExportAAMAGrainline(dx_ifaceBlock *detailBlock, const VLayoutPi
     const QVector<QPointF> grainline = detail.GetGrainline();
     if (grainline.count() > 1)
     {
-        if (DRW_Entity *e = AAMALine(QLineF(grainline.first(), grainline.last()), "7"))
+        if (DRW_Entity *e = AAMALine(QLineF(grainline.first(), grainline.last()), QChar('7')))
         {
             detailBlock->ent.push_back(e);
         }
@@ -762,7 +762,7 @@ void VDxfEngine::ExportAAMAText(dx_ifaceBlock *detailBlock, const VLayoutPiece &
     for (int i = 0; i < list.size(); ++i)
     {
         QPointF pos(startPos.x(), startPos.y() - ToPixel(AAMATextHeight, varInsunits)*(list.size() - i-1));
-        detailBlock->ent.push_back(AAMAText(pos, list.at(i), "1"));
+        detailBlock->ent.push_back(AAMAText(pos, list.at(i), QChar('1')));
     }
 }
 
@@ -777,7 +777,7 @@ void VDxfEngine::ExportAAMAGlobalText(const QSharedPointer<dx_iface> &input, con
             for (int j = 0; j < strings.size(); ++j)
             {
                 QPointF pos(0, getSize().height() - ToPixel(AAMATextHeight, varInsunits)*(strings.size() - j-1));
-                input->AddEntity(AAMAText(pos, strings.at(j), "1"));
+                input->AddEntity(AAMAText(pos, strings.at(j), QChar('1')));
             }
             return;
         }

src/libs/vformat/vmeasurements.cpp

@@ -277,9 +277,9 @@ void VMeasurements::ReadMeasurements() const
         QSharedPointer<VMeasurement> tempMeash;
         if (type == MeasurementsType::Multisize)
         {
-            qreal base = GetParametrDouble(dom, AttrBase, "0");
+            qreal base = GetParametrDouble(dom, AttrBase, QChar('0'));
-            qreal ksize = GetParametrDouble(dom, AttrSizeIncrease, "0");
+            qreal ksize = GetParametrDouble(dom, AttrSizeIncrease, QChar('0'));
-            qreal kheight = GetParametrDouble(dom, AttrHeightIncrease, "0");
+            qreal kheight = GetParametrDouble(dom, AttrHeightIncrease, QChar('0'));
 
             tempMeash = QSharedPointer<VMeasurement>(new VMeasurement(static_cast<quint32>(i), name, BaseSize(),
                                                                       BaseHeight(), base, ksize, kheight));
@@ -302,7 +302,7 @@ void VMeasurements::ReadMeasurements() const
         }
         else
         {
-            const QString formula = GetParametrString(dom, AttrValue, "0");
+            const QString formula = GetParametrString(dom, AttrValue, QChar('0'));
             bool ok = false;
             qreal value = EvalFormula(tempData.data(), formula, &ok);
 
@@ -330,7 +330,7 @@ void VMeasurements::ClearForExport()
         {
             if (qmu::QmuTokenParser::IsSingle(domElement.attribute(AttrValue)))
             {
-                SetAttribute(domElement, AttrValue, QString("0"));
+                SetAttribute(domElement, AttrValue, QChar('0'));
             }
         }
     }
@@ -806,13 +806,13 @@ QDomElement VMeasurements::MakeEmpty(const QString &name, const QString &formula
 
     if (type == MeasurementsType::Multisize)
     {
-        SetAttribute(element, AttrBase, QString("0"));
+        SetAttribute(element, AttrBase, QChar('0'));
-        SetAttribute(element, AttrSizeIncrease, QString("0"));
+        SetAttribute(element, AttrSizeIncrease, QChar('0'));
-        SetAttribute(element, AttrHeightIncrease, QString("0"));
+        SetAttribute(element, AttrHeightIncrease, QChar('0'));
     }
     else
     {
-        SetAttribute(element, AttrValue, formula.isEmpty() ? QString("0") : formula);
+        SetAttribute(element, AttrValue, formula.isEmpty() ? QChar('0') : formula);
     }
 
     return element;

src/libs/vgeometry/vabstractarc_p.h

@@ -102,7 +102,7 @@ VAbstractArcData::VAbstractArcData(const QString &formulaLength, const VPointF &
     : f1(f1),
       formulaF1(formulaF1),
       f2(0),
-      formulaF2("0"),
+      formulaF2('0'),
       center(center),
       isFlipped(false),
       formulaLength(formulaLength)
@@ -113,7 +113,7 @@ VAbstractArcData::VAbstractArcData(const VPointF &center, qreal f1)
     : f1(f1),
       formulaF1(QString().number(f1)),
       f2(0),
-      formulaF2("0"),
+      formulaF2('0'),
       center(center),
       isFlipped(false),
       formulaLength()

src/libs/vgeometry/vplacelabelitem_p.h

@@ -43,7 +43,7 @@ public:
     VPlaceLabelItemData()
         : width(),
           height(),
-          angle("0"),
+          angle('0'),
           type(PlaceLabelType::Button),
           centerPoint(0),
           wValue(0),

src/libs/vgeometry/vspline_p.h

@@ -95,13 +95,13 @@ VSplineData::VSplineData()
     : p1(),
       p4(),
       angle1(0),
-      angle1F("0"),
+      angle1F('0'),
       angle2(0),
-      angle2F("0"),
+      angle2F('0'),
       c1Length(0),
-      c1LengthF("0"),
+      c1LengthF('0'),
       c2Length(0),
-      c2LengthF("0"),
+      c2LengthF('0'),
       kCurve(1)
 {}
 
@@ -130,9 +130,9 @@ VSplineData::VSplineData(VPointF p1, VPointF p4, qreal angle1, qreal angle2, qre
       angle2(angle2),
       angle2F(QString().number(angle2)),
       c1Length(0),
-      c1LengthF("0"),
+      c1LengthF('0'),
       c2Length(0),
-      c2LengthF("0"),
+      c2LengthF('0'),
       kCurve(kCurve)
 {
     const qreal L = GetL(static_cast<QPointF>(p1), static_cast<QPointF>(p4), kCurve);
@@ -153,13 +153,13 @@ VSplineData::VSplineData(VPointF p1, QPointF p2, QPointF p3, VPointF p4)
     : p1(p1),
       p4(p4),
       angle1(0),
-      angle1F("0"),
+      angle1F('0'),
       angle2(0),
-      angle2F("0"),
+      angle2F('0'),
       c1Length(0),
-      c1LengthF("0"),
+      c1LengthF('0'),
       c2Length(0),
-      c2LengthF("0"),
+      c2LengthF('0'),
       kCurve(1)
 {
     QLineF p1p2(static_cast<QPointF>(p1), static_cast<QPointF>(p2));

src/libs/vgeometry/vsplinepoint_p.h

@@ -107,13 +107,13 @@ public:
     VSplinePointData()
         : pSpline(),
           angle1(0),
-          angle1F("0"),
+          angle1F('0'),
           angle2(180),
           angle2F("180"),
           length1(0),
-          length1F("0"),
+          length1F('0'),
           length2(0),
-          length2F("0")
+          length2F('0')
     {}
 
     VSplinePointData(VPointF pSpline, qreal angle1, const QString &angle1F, qreal angle2, const QString &angle2F,

src/libs/vpatterndb/vnodedetail.cpp

@@ -61,7 +61,7 @@ QString LocalWidth(const QLineF &line, const QLineF &movedLine)
     }
     else
     {// different direction means value is negative
-        return QString("0");
+        return QChar('0');
     }
 }
 
@@ -261,8 +261,8 @@ QVector<VPieceNode> VNodeDetail::Convert(const VContainer *data, const QVector<V
 
     if (not closed && path.CountNodes() > 1)
     {
-        path[0].SetFormulaSABefore("0");
+        path[0].SetFormulaSABefore(QChar('0'));
-        path[path.CountNodes()-1].SetFormulaSAAfter("0");
+        path[path.CountNodes()-1].SetFormulaSAAfter(QChar('0'));
     }
 
     return path.GetNodes();

src/libs/vpatterndb/vpiece.cpp

@@ -600,7 +600,7 @@ void VPiece::SetFormulaSAWidth(const QString &formula, qreal value)
 {
     SetSAWidth(value);
     const qreal width = GetSAWidth();
-    width >= 0 ? d->m_formulaWidth = formula : d->m_formulaWidth = QLatin1String("0");
+    width >= 0 ? d->m_formulaWidth = formula : d->m_formulaWidth = QLatin1Char('0');
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vpatterndb/vpiece_p.h

@@ -58,7 +58,7 @@ public:
           m_ppData(),
           m_piPatternInfo(),
           m_glGrainline(),
-          m_formulaWidth("0")
+          m_formulaWidth('0')
     {}
 
     VPieceData(const VPieceData &detail)

src/libs/vpatterndb/vpiecepath_p.h

@@ -48,7 +48,7 @@ public:
           m_name(),
           m_penType(Qt::SolidLine),
           m_cut(false),
-          m_visibilityTrigger("1")
+          m_visibilityTrigger('1')
     {}
 
     explicit VPiecePathData(PiecePathType type)
@@ -57,7 +57,7 @@ public:
           m_name(),
           m_penType(Qt::SolidLine),
           m_cut(false),
-          m_visibilityTrigger("1")
+          m_visibilityTrigger('1')
     {}
 
     VPiecePathData(const VPiecePathData &path)

src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp

@@ -1094,7 +1094,7 @@ void DialogPiecePath::SetPiecePath(const VPiecePath &path)
     }
     else
     {
-        ui->plainTextEditFormulaVisible->setPlainText("1");
+        ui->plainTextEditFormulaVisible->setPlainText(QChar('1'));
     }
 
     ValidObjects(PathIsValid());
@@ -1318,7 +1318,7 @@ VPiecePath DialogPiecePath::CreatePath() const
     }
     else
     {
-        path.SetVisibilityTrigger("1");
+        path.SetVisibilityTrigger(QChar('1'));
     }
 
     return path;

src/libs/vtools/tools/drawTools/operation/flipping/vtoolflippingbyaxis.cpp

@@ -215,7 +215,7 @@ void VToolFlippingByAxis::SaveDialog(QDomElement &domElement, QList<quint32> &ol
 void VToolFlippingByAxis::ReadToolAttributes(const QDomElement &domElement)
 {
     m_originPointId = doc->GetParametrUInt(domElement, AttrCenter, NULL_ID_STR);
-    m_axisType = static_cast<AxisType>(doc->GetParametrUInt(domElement, AttrAxisType, "1"));
+    m_axisType = static_cast<AxisType>(doc->GetParametrUInt(domElement, AttrAxisType, QChar('1')));
     suffix = doc->GetParametrString(domElement, AttrSuffix);
 }
 

src/libs/vtools/tools/drawTools/operation/vtoolmove.cpp

@@ -480,9 +480,9 @@ void VToolMove::SaveDialog(QDomElement &domElement, QList<quint32> &oldDependenc
 void VToolMove::ReadToolAttributes(const QDomElement &domElement)
 {
     origPointId = doc->GetParametrUInt(domElement, AttrCenter, NULL_ID_STR);
-    formulaAngle = doc->GetParametrString(domElement, AttrAngle, "0");
+    formulaAngle = doc->GetParametrString(domElement, AttrAngle, QChar('0'));
-    formulaRotationAngle = doc->GetParametrString(domElement, AttrRotationAngle, "0");
+    formulaRotationAngle = doc->GetParametrString(domElement, AttrRotationAngle, QChar('0'));
-    formulaLength = doc->GetParametrString(domElement, AttrLength, "0");
+    formulaLength = doc->GetParametrString(domElement, AttrLength, QChar('0'));
     suffix = doc->GetParametrString(domElement, AttrSuffix);
 }
 

src/libs/vtools/tools/drawTools/operation/vtoolrotation.cpp

@@ -351,7 +351,7 @@ void VToolRotation::SaveDialog(QDomElement &domElement, QList<quint32> &oldDepen
 void VToolRotation::ReadToolAttributes(const QDomElement &domElement)
 {
     origPointId = doc->GetParametrUInt(domElement, AttrCenter, NULL_ID_STR);
-    formulaAngle = doc->GetParametrString(domElement, AttrAngle, "0");
+    formulaAngle = doc->GetParametrString(domElement, AttrAngle, QChar('0'));
     suffix = doc->GetParametrString(domElement, AttrSuffix);
 }
 

src/libs/vtools/tools/drawTools/toolcurve/vtoolarc.h

@@ -48,9 +48,9 @@ struct VToolArcInitData : VAbstractSplineInitData
     VToolArcInitData()
         : VAbstractSplineInitData(),
           center(NULL_ID),
-          radius("0"),
+          radius('0'),
-          f1("0"),
+          f1('0'),
-          f2("0")
+          f2('0')
     {}
 
     quint32 center;

src/libs/vtools/tools/drawTools/toolcurve/vtoolarcwithlength.h

@@ -48,9 +48,9 @@ struct VToolArcWithLengthInitData : VAbstractSplineInitData
     VToolArcWithLengthInitData()
         : VAbstractSplineInitData(),
           center(NULL_ID),
-          radius("0"),
+          radius('0'),
-          f1("0"),
+          f1('0'),
-          length("0")
+          length('0')
     {}
 
     quint32 center;

src/libs/vtools/tools/drawTools/toolcurve/vtoolellipticalarc.cpp

@@ -441,9 +441,9 @@ QString VToolEllipticalArc::MakeToolTip() const
             .arg(tr("Length"))                          // 1
             .arg(qApp->fromPixel(elArc->GetLength()))   // 2
             .arg(UnitsToStr(qApp->patternUnit(), true), // 3
-                 tr("Radius") + QLatin1String("1"))     // 4
+                 tr("Radius") + QLatin1Char('1'))       // 4
             .arg(qApp->fromPixel(elArc->GetRadius1()))  // 5
-            .arg(tr("Radius") + QLatin1String("2"))     // 6
+            .arg(tr("Radius") + QLatin1Char('2'))       // 6
             .arg(qApp->fromPixel(elArc->GetRadius2()))  // 7
             .arg(tr("Start angle"))                     // 8
             .arg(elArc->GetStartAngle())                // 9

src/libs/vtools/tools/drawTools/toolcurve/vtoolellipticalarc.h

@@ -48,11 +48,11 @@ struct VToolEllipticalArcInitData : VAbstractSplineInitData
     VToolEllipticalArcInitData()
         : VAbstractSplineInitData(),
           center(NULL_ID),
-          radius1("0"),
+          radius1('0'),
-          radius2("0"),
+          radius2('0'),
-          f1("0"),
+          f1('0'),
-          f2("0"),
+          f2('0'),
-          rotationAngle("0")
+          rotationAngle('0')
     {}
 
     quint32 center;

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/toolcut/vtoolcutarc.cpp

@@ -283,5 +283,5 @@ QString VToolCutArc::MakeToolTip() const
         return toolTip;
     };
 
-    return ArcToolTip(ArcToolTip("<table>", ar1, "1"), ar2, "2") + QLatin1String("</table>");
+    return ArcToolTip(ArcToolTip("<table>", ar1, QChar('1')), ar2, QChar('2')) + QLatin1String("</table>");
 }

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/toollinepoint/vtoolcurveintersectaxis.h

@@ -50,7 +50,7 @@ struct VToolCurveIntersectAxisInitData : VToolLinePointInitData
 {
     VToolCurveIntersectAxisInitData()
         : VToolLinePointInitData(),
-          formulaAngle("0"),
+          formulaAngle('0'),
           basePointId(NULL_ID),
           curveId(NULL_ID)
     {}

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/toollinepoint/vtoollineintersectaxis.h

@@ -50,7 +50,7 @@ struct VToolLineIntersectAxisInitData : VToolLinePointInitData
 {
     VToolLineIntersectAxisInitData()
         : VToolLinePointInitData(),
-          formulaAngle("0"),
+          formulaAngle('0'),
           basePointId(NULL_ID),
           firstPointId(NULL_ID),
           secondPointId(NULL_ID)

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/toollinepoint/vtoolnormal.cpp

@@ -254,7 +254,7 @@ void VToolNormal::ReadToolAttributes(const QDomElement &domElement)
     formulaLength = doc->GetParametrString(domElement, AttrLength, QString());
     basePointId = doc->GetParametrUInt(domElement, AttrFirstPoint, NULL_ID_STR);
     secondPointId = doc->GetParametrUInt(domElement, AttrSecondPoint, NULL_ID_STR);
-    angle = doc->GetParametrDouble(domElement, AttrAngle, "0");
+    angle = doc->GetParametrDouble(domElement, AttrAngle, QChar('0'));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointfromarcandtangent.cpp

@@ -314,7 +314,7 @@ void VToolPointFromArcAndTangent::ReadToolAttributes(const QDomElement &domEleme
 {
     arcId = doc->GetParametrUInt(domElement, AttrArc, NULL_ID_STR);
     tangentPointId = doc->GetParametrUInt(domElement, AttrTangent, NULL_ID_STR);
-    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, "1"));
+    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointfromcircleandtangent.cpp

@@ -299,7 +299,7 @@ void VToolPointFromCircleAndTangent::ReadToolAttributes(const QDomElement &domEl
     circleCenterId = doc->GetParametrUInt(domElement, AttrCCenter, NULL_ID_STR);
     tangentPointId = doc->GetParametrUInt(domElement, AttrTangent, NULL_ID_STR);
     circleRadius = doc->GetParametrString(domElement, AttrCRadius);
-    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, "1"));
+    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointfromcircleandtangent.h

@@ -50,7 +50,7 @@ struct VToolPointFromCircleAndTangentInitData : VToolSinglePointInitData
     VToolPointFromCircleAndTangentInitData()
         : VToolSinglePointInitData(),
           circleCenterId(NULL_ID),
-          circleRadius("0"),
+          circleRadius('0'),
           tangentPointId(NULL_ID),
           crossPoint(CrossCirclesPoint::FirstPoint)
     {}

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointofcontact.h

@@ -49,7 +49,7 @@ struct VToolPointOfContactInitData : VToolSinglePointInitData
 {
     VToolPointOfContactInitData()
         : VToolSinglePointInitData(),
-          radius("0"),
+          radius('0'),
           center(NULL_ID),
           firstPointId(NULL_ID),
           secondPointId(NULL_ID)

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointofintersectionarcs.cpp

@@ -318,7 +318,7 @@ void VToolPointOfIntersectionArcs::ReadToolAttributes(const QDomElement &domElem
 {
     firstArcId = doc->GetParametrUInt(domElement, AttrFirstArc, NULL_ID_STR);
     secondArcId = doc->GetParametrUInt(domElement, AttrSecondArc, NULL_ID_STR);
-    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, "1"));
+    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointofintersectioncircles.cpp

@@ -334,7 +334,7 @@ void VToolPointOfIntersectionCircles::ReadToolAttributes(const QDomElement &domE
     secondCircleCenterId = doc->GetParametrUInt(domElement, AttrC2Center, NULL_ID_STR);
     firstCircleRadius = doc->GetParametrString(domElement, AttrC1Radius);
     secondCircleRadius = doc->GetParametrString(domElement, AttrC2Radius);
-    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, "1"));
+    crossPoint = static_cast<CrossCirclesPoint>(doc->GetParametrUInt(domElement, AttrCrossPoint, QChar('1')));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointofintersectioncircles.h

@@ -51,8 +51,8 @@ struct VToolPointOfIntersectionCirclesInitData : VToolSinglePointInitData
         : VToolSinglePointInitData(),
           firstCircleCenterId(NULL_ID),
           secondCircleCenterId(NULL_ID),
-          firstCircleRadius("0"),
+          firstCircleRadius('0'),
-          secondCircleRadius("0"),
+          secondCircleRadius('0'),
           crossPoint(CrossCirclesPoint::FirstPoint)
     {}
 

src/libs/vtools/tools/drawTools/toolpoint/toolsinglepoint/vtoolpointofintersectioncurves.cpp

@@ -370,8 +370,8 @@ void VToolPointOfIntersectionCurves::ReadToolAttributes(const QDomElement &domEl
 {
     firstCurveId = doc->GetParametrUInt(domElement, AttrCurve1, NULL_ID_STR);
     secondCurveId = doc->GetParametrUInt(domElement, AttrCurve2, NULL_ID_STR);
-    vCrossPoint = static_cast<VCrossCurvesPoint>(doc->GetParametrUInt(domElement, AttrVCrossPoint, "1"));
+    vCrossPoint = static_cast<VCrossCurvesPoint>(doc->GetParametrUInt(domElement, AttrVCrossPoint, QChar('1')));
-    hCrossPoint = static_cast<HCrossCurvesPoint>(doc->GetParametrUInt(domElement, AttrHCrossPoint, "1"));
+    hCrossPoint = static_cast<HCrossCurvesPoint>(doc->GetParametrUInt(domElement, AttrHCrossPoint, QChar('1')));
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/tools/nodeDetails/vtoolplacelabel.h

@@ -39,9 +39,9 @@ struct VToolPlaceLabelInitData : VAbstractNodeInitData
 {
     VToolPlaceLabelInitData()
         : VAbstractNodeInitData(),
-          width("0"),
+          width('0'),
-          height("0"),
+          height('0'),
-          angle("0"),
+          angle('0'),
           type(PlaceLabelType::Button),
           centerPoint(NULL_ID)
     {}

src/libs/vtools/tools/vtoolseamallowance.cpp

@@ -993,7 +993,7 @@ void VToolSeamAllowance::RefreshDataInFile()
             Q_STATIC_ASSERT_X(VPatternConverter::PatternMinVer < CONVERTER_VERSION_CHECK(0, 4, 0),
                               "Time to refactor the code.");
 
-            const uint version = doc->GetParametrUInt(domElement, AttrVersion, "1");
+            const uint version = doc->GetParametrUInt(domElement, AttrVersion, QChar('1'));
             if (version == 1)
             {
                 const VPiece piece = VAbstractTool::data.GetPiece(m_id);

src/libs/vtools/tools/vtoolseamallowance.h

@@ -46,7 +46,7 @@ struct VToolSeamAllowanceInitData : VAbstractToolInitData
     VToolSeamAllowanceInitData()
         : VAbstractToolInitData(),
           detail(),
-          width("0"),
+          width('0'),
           drawName()
     {}
 

src/libs/vtools/tools/vtooluniondetails.cpp

@@ -583,7 +583,7 @@ quint32 AddNodeElArc(const VPieceNode &node, const VToolUnionDetailsInitData &in
     QScopedPointer<VEllipticalArc> arc1(new VEllipticalArc (*tmpCenter, arc->GetRadius1(), arc->GetRadius2(),
                                                             arc->GetFormulaRadius1(), arc->GetFormulaRadius2(),
                                                             l1.angle(), QString().setNum(l1.angle()), l2.angle(),
-                                                            QString().setNum(l2.angle()), 0, "0"));
+                                                            QString().setNum(l2.angle()), 0, QChar('0')));
     arc1->setMode(Draw::Modeling);
 
     QScopedPointer<VEllipticalArc> arc2(new VEllipticalArc(*arc1));
@@ -687,13 +687,13 @@ quint32 AddNodeSplinePath(const VPieceNode &node, const VToolUnionDetailsInitDat
             const QString angle1F = QString().number(angle1);
 
             path->append(VSplinePoint(*p1, angle1, angle1F, spl.GetStartAngle(), spl.GetStartAngleFormula(),
-                                      0, "0", spline.GetC1Length(), spline.GetC1LengthFormula()));
+                                      0, QChar('0'), spline.GetC1Length(), spline.GetC1LengthFormula()));
         }
 
         const qreal angle2 = spl.GetEndAngle()+180;
         const QString angle2F = QString().number(angle2);
         qreal pL2 = 0;
-        QString pL2F("0");
+        QString pL2F('0');
         if (i+1 <= splinePath->CountSubSpl())
         {
             const VSpline nextSpline = splinePath->GetSpline(i+1);
@@ -997,7 +997,7 @@ void UpdateNodeElArc(VContainer *data, const VPieceNode &node, QVector<quint32>
     QScopedPointer<VEllipticalArc> arc1(new VEllipticalArc (*center, arc->GetRadius1(), arc->GetRadius2(),
                                                             arc->GetFormulaRadius1(), arc->GetFormulaRadius2(),
                                                             l1.angle(), QString().setNum(l1.angle()), l2.angle(),
-                                                            QString().setNum(l2.angle()), 0, "0"));
+                                                            QString().setNum(l2.angle()), 0, QChar('0')));
     arc1->setMode(Draw::Modeling);
     data->UpdateGObject(TakeNextId(children), arc1.take());
 }
@@ -1064,14 +1064,14 @@ void UpdateNodeSplinePath(VContainer *data, const VPieceNode &node, QVector<quin
             const QString angle1F = QString().number(angle1);
 
             path->append(VSplinePoint(*p1, angle1, angle1F, spl.GetStartAngle(), spl.GetStartAngleFormula(),
-                                      0, "0", spline.GetC1Length(), spline.GetC1LengthFormula()));
+                                      0, QChar('0'), spline.GetC1Length(), spline.GetC1LengthFormula()));
         }
 
         const qreal angle2 = spl.GetEndAngle()+180;
         const QString angle2F = QString().number(angle2);
 
         qreal pL2 = 0;
-        QString pL2F("0");
+        QString pL2F('0');
         if (i+1 <= splinePath->CountSubSpl())
         {
             const VSpline nextSpline = splinePath->GetSpline(i+1);

src/libs/vtools/undocommands/additemtogroup.cpp

@@ -79,8 +79,8 @@ void AddItemToGroup::performUndoRedo(bool isUndo)
 
             // set the item visible. Because if the undo is done when unvisible and it's not in any group after the
             // undo, it stays unvisible until the entire drawing is completly rerendered.
-            quint32 objectId = doc->GetParametrUInt(xml,QString("object"),NULL_ID_STR);
+            quint32 objectId = doc->GetParametrUInt(xml, QStringLiteral("object"), NULL_ID_STR);
-            quint32 toolId = doc->GetParametrUInt(xml,QString("tool"),NULL_ID_STR);
+            quint32 toolId = doc->GetParametrUInt(xml, QStringLiteral("tool"), NULL_ID_STR);
             VDataTool* tool = doc->getTool(toolId);
             tool->GroupVisibility(objectId,true);
         }

src/libs/vtools/undocommands/removeitemfromgroup.cpp

@@ -88,8 +88,8 @@ void RemoveItemFromGroup::performUndoRedo(bool isUndo)
 
             // set the item visible. Because if the undo is done when unvisibile and it's not in any group after the
             // undo, it stays unvisible until the entire drawing is completly rerendered.
-            quint32 objectId = doc->GetParametrUInt(xml,QString("object"),NULL_ID_STR);
+            quint32 objectId = doc->GetParametrUInt(xml, QStringLiteral("object"), NULL_ID_STR);
-            quint32 toolId = doc->GetParametrUInt(xml,QString("tool"),NULL_ID_STR);
+            quint32 toolId = doc->GetParametrUInt(xml, QStringLiteral("tool"), NULL_ID_STR);
             VDataTool* tool = doc->getTool(toolId);
             tool->GroupVisibility(objectId,true);
         }

src/libs/vtools/visualization/path/vistoolsplinepath.cpp

@@ -256,7 +256,7 @@ void VisToolSplinePath::Creating(const QPointF &pSpl, int size)
             }
             else
             {
-                path[size-1].SetLength2(0, "0");
+                path[size-1].SetLength2(0, QChar('0'));
             }
             emit PathChanged(path);
         }
@@ -273,8 +273,8 @@ void VisToolSplinePath::Creating(const QPointF &pSpl, int size)
             }
             else
             {
-                path[size-1].SetLength1(0, "0");
+                path[size-1].SetLength1(0, QChar('0'));
-                path[size-1].SetLength2(0, "0");
+                path[size-1].SetLength2(0, QChar('0'));
             }
             emit PathChanged(path);
         }
@@ -293,7 +293,7 @@ void VisToolSplinePath::Creating(const QPointF &pSpl, int size)
         }
         else
         {
-            path[size-1].SetLength2(0, "0");
+            path[size-1].SetLength2(0, QChar('0'));
         }
         emit PathChanged(path);
 

src/test/ValentinaTest/tst_vpiece.cpp

@@ -104,8 +104,8 @@ void TST_VPiece::ClearLoop()
     detail.GetPath().Append(VPieceNode(309, Tool::NodePoint));
     detail.GetPath().Append(VPieceNode(310, Tool::NodePoint));
     // Closed
-    detail.GetPath()[0].SetFormulaSABefore("0");
+    detail.GetPath()[0].SetFormulaSABefore(QChar('0'));
-    detail.GetPath()[detail.GetPath().CountNodes()-1].SetFormulaSAAfter("0");
+    detail.GetPath()[detail.GetPath().CountNodes()-1].SetFormulaSAAfter(QChar('0'));
 
     const QVector<QPointF> pointsEkv = detail.SeamAllowancePoints(data.data());
 
@@ -243,7 +243,7 @@ void TST_VPiece::Issue620()
     {
         const QSharedPointer<VPointF> point = data->GeometricObject<VPointF>(6);
         VSplinePoint p(*point.data(), 239.37700000000001, "239.377", 419.37700000000001, "59.3765",
-                       0, "0", 109.55943307086613, "2.89876");
+                       0, QChar('0'), 109.55943307086613, "2.89876");
         points.append(p);
     }
 

src/test/ValentinaTest/tst_vsplinepath.cpp

@@ -52,7 +52,7 @@ void TST_VSplinePath::TestRotation_data()
 
     {
         VPointF pSpline(30, 39.999874015748034, "X", 5.0000125984251973, 9.9999874015748045);
-        VSplinePoint p(pSpline, 89.208600000000004, "89.2086", 269.20859999999999, "269.209", 0, "0",
+        VSplinePoint p(pSpline, 89.208600000000004, "89.2086", 269.20859999999999, "269.209", 0, QChar('0'),
                        153.33618897637794, "4.05702");
         originPoints.append(p);
     }
@@ -67,7 +67,7 @@ void TST_VSplinePath::TestRotation_data()
     {
         VPointF pSpline(820.42771653543309, 417.95262992125987, "X", 5.0000125984251973, 9.9999874015748045);
         VSplinePoint p(pSpline, 173.39500000000001, "173.395", 353.39499999999998, "353.395",
-                       381.23716535433073, "10.0869", 0, "0");
+                       381.23716535433073, "10.0869", 0, QChar('0'));
         originPoints.append(p);
     }
 
@@ -75,7 +75,7 @@ void TST_VSplinePath::TestRotation_data()
 
     {
         VPointF pSpline(-347.55140568256883, 400.53936590535034, "X", 5.0000125984251973, 9.9999874015748045);
-        VSplinePoint p(pSpline, 176.56789999999998, "176.568", 356.56790000000001, "356.568", 0, "0",
+        VSplinePoint p(pSpline, 176.56789999999998, "176.568", 356.56790000000001, "356.568", 0, QChar('0'),
                        153.33618897637794, "4.05702");
         rotatedPoints.append(p);
     }
@@ -90,7 +90,7 @@ void TST_VSplinePath::TestRotation_data()
     {
         VPointF pSpline(66.417055567032421, -371.63572683892357, "X", 5.0000125984251973, 9.9999874015748045);
         VSplinePoint p(pSpline, 260.7543, "260.754", 80.754300000000015, "80.7543", 381.23716535433078, "10.0869", 0,
-                       "0");
+                       QChar('0'));
         rotatedPoints.append(p);
     }
 
@@ -146,7 +146,7 @@ void TST_VSplinePath::TestFlip_data()
 
     {
         VPointF pSpline(30, 39.999874015748034, "X", 5.0000125984251973, 9.9999874015748045);
-        VSplinePoint p(pSpline, 89.208600000000004, "89.2086", 269.20859999999999, "269.209", 0, "0",
+        VSplinePoint p(pSpline, 89.208600000000004, "89.2086", 269.20859999999999, "269.209", 0, QChar('0'),
                        153.33618897637794, "4.05702");
         originPoints.append(p);
     }
@@ -161,7 +161,7 @@ void TST_VSplinePath::TestFlip_data()
     {
         VPointF pSpline(820.42771653543309, 417.95262992125987, "X", 5.0000125984251973, 9.9999874015748045);
         VSplinePoint p(pSpline, 173.39500000000001, "173.395", 353.39499999999998, "353.395",
-                       381.23716535433073, "10.0869", 0, "0");
+                       381.23716535433073, "10.0869", 0, QChar('0'));
         originPoints.append(p);
     }
 
@@ -189,7 +189,7 @@ void TST_VSplinePath::TestFlip()
     const VSplinePath splPath(originPoints);
     const VSplinePath res = splPath.Flip(axis, prefix);
 
-    const QString errorMsg = QString("The name doesn't contain the prefix '%1'.").arg(prefix);
+    const QString errorMsg = QStringLiteral("The name doesn't contain the prefix '%1'.").arg(prefix);
     QVERIFY2(res.name().endsWith(prefix), qUtf8Printable(errorMsg));
 
     QCOMPARE(splPath.GetLength(), res.GetLength());