Implement "translationdomain" attribute for extensions

Will allow extensions to ship their own message catalog used for
translation of the extension#s strings.

Needs to be set on the root <inkscape-extension> element of the .inx

Currently supported values:
- unset: use default textdomain (which happens to be 'inkscape')
- 'inkscape': use Inkscape's message catalog
- 'none': disable translation for the extension's strings

1 files changed, 22 insertions, 9 deletions

diff --git a/src/extension/input.cpp b/src/extension/input.cpp
index dd9485202..d28d8113a 100644
--- a/src/extension/input.cpp
+++ b/src/extension/input.cpp
@@ -182,23 +182,35 @@ Input::get_extension()
     \return  The name of the filetype supported
     \brief   Get the name of the filetype supported
 */
-gchar *
-Input::get_filetypename()
+const char *
+Input::get_filetypename(bool translated)
 {
-    if (filetypename != nullptr)
-        return filetypename;
+    const char *name;
+
+    if (filetypename)
+        name = filetypename;
     else
-        return get_name();
+        name = get_name();
+
+    if (name && translated) {
+        return get_translation(name);
+    } else {
+        return name;
+    }
 }
 
 /**
     \return  Tooltip giving more information on the filetype
     \brief   Get the tooltip for more information on the filetype
 */
-gchar *
-Input::get_filetypetooltip()
+const char *
+Input::get_filetypetooltip(bool translated)
 {
-    return filetypetooltip;
+    if (filetypetooltip && translated) {
+        return get_translation(filetypetooltip);
+    } else {
+        return filetypetooltip;
+    }
 }
 
 /**
@@ -224,7 +236,8 @@ Input::prefs (const gchar *uri)
         return true;
     }
 
-    PrefDialog * dialog = new PrefDialog(this->get_name(), controls);
+    Glib::ustring name = get_translation(this->get_name());
+    PrefDialog *dialog = new PrefDialog(name, controls);
     int response = dialog->run();
     dialog->hide();