I18n: disambiguate or extract a few messages

Disambiguate:
- "Active Only" (GPencil copy material and layer, add NLA modifier)
- "Clip" (movie clip, image extension mode)
- "Emission" (particles)
- "New" (scene)
- "Tracking" (movie clip)

Extract:
- "ViewLayer", the default view layer name when creating new scene

Ref T43295

Reviewed By: mont29

Maniphest Tasks: T43295

Differential Revision: https://developer.blender.org/D16196

4 files changed, 16 insertions, 7 deletions

diff --git a/source/blender/editors/gpencil/gpencil_data.c b/source/blender/editors/gpencil/gpencil_data.c
index 340288b2d74..c6d7eb294fb 100644
--- a/source/blender/editors/gpencil/gpencil_data.c
+++ b/source/blender/editors/gpencil/gpencil_data.c
@@ -623,6 +623,7 @@ void GPENCIL_OT_layer_duplicate_object(wmOperatorType *ot)
                          true,
                          "Only Active",
                          "Copy only active Layer, uncheck to append all layers");
+  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_GPENCIL);
   RNA_def_property_flag(prop, PROP_HIDDEN | PROP_SKIP_SAVE);
 }
 
@@ -3686,6 +3687,7 @@ void GPENCIL_OT_materials_copy_to_object(wmOperatorType *ot)
                          true,
                          "Only Active",
                          "Append only active material, uncheck to append all materials");
+  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_GPENCIL);
   RNA_def_property_flag(prop, PROP_HIDDEN | PROP_SKIP_SAVE);
 }
 
diff --git a/source/blender/editors/scene/scene_edit.c b/source/blender/editors/scene/scene_edit.c
index f19017cb723..01877deb716 100644
--- a/source/blender/editors/scene/scene_edit.c
+++ b/source/blender/editors/scene/scene_edit.c
@@ -286,6 +286,7 @@ static void SCENE_OT_new(wmOperatorType *ot)
 
   /* properties */
   ot->prop = RNA_def_enum(ot->srna, "type", scene_new_items, SCE_COPY_NEW, "Type", "");
+  RNA_def_property_translation_context(ot->prop, BLT_I18NCONTEXT_ID_SCENE);
 }
 
 /** \} */
diff --git a/source/blender/editors/space_clip/clip_ops.c b/source/blender/editors/space_clip/clip_ops.c
index f276c2acd1a..b10ad86504c 100644
--- a/source/blender/editors/space_clip/clip_ops.c
+++ b/source/blender/editors/space_clip/clip_ops.c
@@ -1611,7 +1611,8 @@ void CLIP_OT_mode_set(wmOperatorType *ot)
   ot->poll = ED_space_clip_poll;
 
   /* properties */
-  RNA_def_enum(ot->srna, "mode", rna_enum_clip_editor_mode_items, SC_MODE_TRACKING, "Mode", "");
+  ot->prop = RNA_def_enum(ot->srna, "mode", rna_enum_clip_editor_mode_items, SC_MODE_TRACKING, "Mode", "");
+  RNA_def_property_translation_context(ot->prop, BLT_I18NCONTEXT_ID_MOVIECLIP);
 }
 
 /** \} */
diff --git a/source/blender/editors/space_nla/nla_edit.c b/source/blender/editors/space_nla/nla_edit.c
index 9df25b1229e..8a3c6745259 100644
--- a/source/blender/editors/space_nla/nla_edit.c
+++ b/source/blender/editors/space_nla/nla_edit.c
@@ -2641,6 +2641,8 @@ static int nla_fmodifier_add_exec(bContext *C, wmOperator *op)
 
 void NLA_OT_fmodifier_add(wmOperatorType *ot)
 {
+  PropertyRNA *prop;
+
   /* identifiers */
   ot->name = "Add F-Modifier";
   ot->idname = "NLA_OT_fmodifier_add";
@@ -2659,11 +2661,12 @@ void NLA_OT_fmodifier_add(wmOperatorType *ot)
   RNA_def_property_translation_context(ot->prop, BLT_I18NCONTEXT_ID_ACTION);
   RNA_def_enum_funcs(ot->prop, nla_fmodifier_itemf);
 
-  RNA_def_boolean(ot->srna,
-                  "only_active",
-                  true,
-                  "Only Active",
-                  "Only add a F-Modifier of the specified type to the active strip");
+  prop = RNA_def_boolean(ot->srna,
+                         "only_active",
+                         true,
+                         "Only Active",
+                         "Only add a F-Modifier of the specified type to the active strip");
+  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_ACTION);
 }
 
 /** \} */
@@ -2832,8 +2835,10 @@ void NLA_OT_fmodifier_paste(wmOperatorType *ot)
   ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
 
   /* properties */
-  RNA_def_boolean(
+  ot->prop = RNA_def_boolean(
       ot->srna, "only_active", true, "Only Active", "Only paste F-Modifiers on active strip");
+  RNA_def_property_translation_context(ot->prop, BLT_I18NCONTEXT_ID_ACTION);
+
   RNA_def_boolean(
       ot->srna,
       "replace",