[TD]translate line names at time of use

src/Mod/TechDraw/App/LineNameEnum.cpp

@@ -22,11 +22,36 @@
 
 #include "PreCompiled.h"
 
+#include "Preferences.h"
+
 #include "LineNameEnum.h"
 
 
 namespace TechDraw {
 
+// these strings have to be kept in order according to Preferences::lineStandard()
+std::vector<std::string> LineName::ContextStrings{
+                            "ANSILineTypeEnum",
+                            "ASMELineTypeEnum",
+                            "ISOLineTypeEnum" };
+
+std::string LineName::translationContext(size_t iStandard)
+{
+    if (iStandard < ContextStrings.size() &&
+        iStandard > 0) {
+        return ContextStrings[iStandard];
+    }
+    return {};
+}
+
+
+std::string LineName::currentTranslationContext()
+{
+    return translationContext(Preferences::lineStandard());
+}
+
+
+
 //! line numbers begin at 1, not 0
 
 const int   ISOLineName::ISOLineNameCount = 15;

src/Mod/TechDraw/App/LineNameEnum.h

@@ -33,8 +33,18 @@
 namespace TechDraw
 {
 
+
+
 //! common definitions for line numbers, names and lineicon names
 
+class TechDrawExport LineName {
+public:
+    static std::string translationContext(size_t iStandard);
+    static std::string currentTranslationContext();
+
+    static std::vector<std::string> ContextStrings;
+};
+
 class TechDrawExport ISOLineName {
     Q_DECLARE_TR_FUNCTIONS(TechDraw::ISOLineName)
 

src/Mod/TechDraw/Gui/DrawGuiUtil.cpp

@@ -180,9 +180,10 @@ void DrawGuiUtil::loadLineStyleChoices(QComboBox* combo, LineGenerator* generato
         choices = LineGenerator::getLineDescriptions();
     }
 
+    auto translationContext = LineName::currentTranslationContext();
     int itemNumber {0};
     for (auto& entry : choices) {
-        QString qentry = Base::Tools::fromStdString(entry);
+        QString qentry = QCoreApplication::translate(translationContext.c_str(), entry.c_str());
         combo->addItem(qentry);
         if (generator) {
             combo->setItemIcon(itemNumber, iconForLine(itemNumber + 1, generator));