Improve Formula Wizard. Disable data types not available in certain cases.

--HG--
branch : develop

src/app/tape/tmainwindow.cpp

@@ -1224,6 +1224,7 @@ void TMainWindow::Fx()
 
     DialogEditWrongFormula *dialog = new DialogEditWrongFormula(meash->GetData(), NULL_ID, this);
     dialog->setWindowTitle(tr("Edit measurement"));
+    dialog->SetMeasurementsMode();
     dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormula->toPlainText().replace("\n", " "),
                                                           true));
     const QString postfix = UnitsToStr(mUnit, true);//Show unit in dialog lable (cm, mm or inch)

src/app/valentina/dialogs/dialogincrements.cpp

@@ -1254,13 +1254,16 @@ void DialogIncrements::Fx()
     QTableWidget *table = nullptr;
     QPlainTextEdit *plainTextEditFormula = nullptr;
 
+    bool incrementMode = true;
     if (button == ui->toolButtonExpr)
     {
+        incrementMode = true;
         table = ui->tableWidgetIncrement;
         plainTextEditFormula = ui->plainTextEditFormula;
     }
     else if (button == ui->toolButtonExprPC)
     {
+        incrementMode = false;
         table = ui->tableWidgetPC;
         plainTextEditFormula = ui->plainTextEditFormulaPC;
     }
@@ -1281,6 +1284,8 @@ void DialogIncrements::Fx()
 
     QScopedPointer<DialogEditWrongFormula> dialog(new DialogEditWrongFormula(incr->GetData(), NULL_ID, this));
     dialog->setWindowTitle(tr("Edit increment"));
+    incrementMode ? dialog->SetIncrementsMode() : dialog->SetPreviewCalculationsMode();
+
     dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(plainTextEditFormula->toPlainText().replace("\n", " "),
                                                           qApp->Settings()->GetOsSeparator()));
     const QString postfix = UnitsToStr(qApp->patternUnit(), true);

src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp

@@ -422,6 +422,31 @@ void DialogEditWrongFormula::setPostfix(const QString &value)
     postfix = value;
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEditWrongFormula::SetMeasurementsMode()
+{
+    ui->radioButtonIncrements->setDisabled(true);
+    SetIncrementsMode();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEditWrongFormula::SetIncrementsMode()
+{
+    ui->radioButtonPC->setDisabled(true);
+    SetPreviewCalculationsMode();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEditWrongFormula::SetPreviewCalculationsMode()
+{
+    ui->radioButtonLengthLine->setDisabled(true);
+    ui->radioButtonLengthSpline->setDisabled(true);
+    ui->radioButtonAngleLine->setDisabled(true);
+    ui->radioButtonRadiusesArcs->setDisabled(true);
+    ui->radioButtonAnglesCurves->setDisabled(true);
+    ui->radioButtonCLength->setDisabled(true);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 QString DialogEditWrongFormula::GetFormula() const
 {

src/libs/vtools/dialogs/support/dialogeditwrongformula.h

@@ -67,6 +67,9 @@ public:
     void         setCheckZero(bool value);
     void         setCheckLessThanZero(bool value);
     void         setPostfix(const QString &value);
+    void         SetMeasurementsMode();
+    void         SetIncrementsMode();
+    void         SetPreviewCalculationsMode();
 public slots:
     virtual void DialogAccepted() Q_DECL_OVERRIDE;
     virtual void DialogRejected() Q_DECL_OVERRIDE;