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/output.cpp b/src/extension/output.cpp
index b4f483a91..05a0de997 100644
--- a/src/extension/output.cpp
+++ b/src/extension/output.cpp
@@ -148,23 +148,35 @@ Output::get_extension()
     \return  The name of the filetype supported
 	\brief   Get the name of the filetype supported
 */
-gchar *
-Output::get_filetypename()
+const char *
+Output::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 *
-Output::get_filetypetooltip()
+const char *
+Output::get_filetypetooltip(bool translated)
 {
-    return filetypetooltip;
+    if (filetypetooltip && translated) {
+        return get_translation(filetypetooltip);
+    } else {
+        return filetypetooltip;
+    }
 }
 
 /**
@@ -187,7 +199,8 @@ Output::prefs ()
         return true;
     }
 
-    PrefDialog * dialog = new PrefDialog(this->get_name(), controls);
+    Glib::ustring title = get_translation(this->get_name());
+    PrefDialog *dialog = new PrefDialog(title, controls);
     int response = dialog->run();
     dialog->hide();