I18n: disambiguate a few translations

- Keying (keyframe insertion)
- Roughness (particle children)
- New image, collection, text (in menus)
- Parents (particles)
- Wrap (text)
- Light (add menu)
- Empty (volume add menu)
- Empty (empty add menu)
- Cycles (f-curve modifier)
- Drag (workspace tool type)
- Power (light intensity)
- Power (math nodes)

This last change also moves all math operations in nodes to the
ID_nodetree context. It's needed only for some operations, but we
can't be more granular here.

Also...

- Fix context extraction for interpolation mode headers in F-Curves
  and GPencil interpolation operator
- Enable new translation: "Slot %d" in image editor
- Fix an English message in the node editor:
  "Replace the input image's alpha channels by..." -> channel

Ref. T43295

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D15694

5 files changed, 12 insertions, 4 deletions

diff --git a/source/blender/makesrna/intern/rna_curve.c b/source/blender/makesrna/intern/rna_curve.c
index fff3f479a3f..69c26c36456 100644
--- a/source/blender/makesrna/intern/rna_curve.c
+++ b/source/blender/makesrna/intern/rna_curve.c
@@ -67,7 +67,8 @@ const EnumPropertyItem rna_enum_keyframe_handle_type_items[] = {
  */
 const EnumPropertyItem rna_enum_beztriple_interpolation_mode_items[] = {
     /* Interpolation. */
-    RNA_ENUM_ITEM_HEADING(N_("Interpolation"), "Standard transitions between keyframes"),
+    RNA_ENUM_ITEM_HEADING(CTX_N_(BLT_I18NCONTEXT_ID_ACTION, "Interpolation"),
+                          "Standard transitions between keyframes"),
     {BEZT_IPO_CONST,
      "CONSTANT",
      ICON_IPO_CONSTANT,
@@ -85,7 +86,8 @@ const EnumPropertyItem rna_enum_beztriple_interpolation_mode_items[] = {
      "Smooth interpolation between A and B, with some control over curve shape"},
 
     /* Easing. */
-    RNA_ENUM_ITEM_HEADING(N_("Easing (by strength)"),
+    RNA_ENUM_ITEM_HEADING(CTX_N_(BLT_I18NCONTEXT_ID_ACTION,
+                                 "Easing (by strength)"),
                           "Predefined inertial transitions, useful for motion graphics "
                           "(from least to most \"dramatic\")"),
     {BEZT_IPO_SINE,
@@ -104,7 +106,8 @@ const EnumPropertyItem rna_enum_beztriple_interpolation_mode_items[] = {
      "Circular",
      "Circular easing (strongest and most dynamic)"},
 
-    RNA_ENUM_ITEM_HEADING(N_("Dynamic Effects"), "Simple physics-inspired easing effects"),
+    RNA_ENUM_ITEM_HEADING(CTX_N_(BLT_I18NCONTEXT_ID_ACTION, "Dynamic Effects"),
+                          "Simple physics-inspired easing effects"),
     {BEZT_IPO_BACK, "BACK", ICON_IPO_BACK, "Back", "Cubic easing with overshoot and settle"},
     {BEZT_IPO_BOUNCE,
      "BOUNCE",
diff --git a/source/blender/makesrna/intern/rna_light.c b/source/blender/makesrna/intern/rna_light.c
index a9e33b8cea6..9cc4b52e637 100644
--- a/source/blender/makesrna/intern/rna_light.c
+++ b/source/blender/makesrna/intern/rna_light.c
@@ -212,6 +212,7 @@ static void rna_def_light_energy(StructRNA *srna, const short light_type)
                                "Power",
                                "The energy this light would emit over its entire area "
                                "if it wasn't limited by the spot angle");
+      RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_LIGHT);
       RNA_def_property_update(prop, 0, "rna_Light_draw_update");
       break;
     }
@@ -224,6 +225,7 @@ static void rna_def_light_energy(StructRNA *srna, const short light_type)
           prop,
           "Power",
           "Light energy emitted over the entire area of the light in all directions");
+      RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_LIGHT);
       RNA_def_property_update(prop, 0, "rna_Light_draw_update");
       break;
     }
diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 24ba8f0fd30..9d204d38292 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -4840,6 +4840,7 @@ static void def_math(StructRNA *srna)
   RNA_def_property_enum_sdna(prop, NULL, "custom1");
   RNA_def_property_enum_items(prop, rna_enum_node_math_items);
   RNA_def_property_ui_text(prop, "Operation", "");
+  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_NODETREE);
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_ShaderNode_socket_update");
 
   prop = RNA_def_property(srna, "use_clamp", PROP_BOOLEAN, PROP_NONE);
@@ -6737,7 +6738,7 @@ static void def_cmp_set_alpha(StructRNA *srna)
        "REPLACE_ALPHA",
        0,
        "Replace Alpha",
-       "Replace the input image's alpha channels by the alpha input value"},
+       "Replace the input image's alpha channel by the alpha input value"},
       {0, NULL, 0, NULL, NULL},
   };
 
diff --git a/source/blender/makesrna/intern/rna_particle.c b/source/blender/makesrna/intern/rna_particle.c
index 3fc98d769b6..545f8c3d924 100644
--- a/source/blender/makesrna/intern/rna_particle.c
+++ b/source/blender/makesrna/intern/rna_particle.c
@@ -2686,6 +2686,7 @@ static void rna_def_particle_settings(BlenderRNA *brna)
   prop = RNA_def_property(srna, "use_parent_particles", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_PARENT);
   RNA_def_property_ui_text(prop, "Parents", "Render parent particles");
+  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_PARTICLESETTINGS);
   RNA_def_property_update(prop, 0, "rna_Particle_redo");
 
   prop = RNA_def_property(srna, "show_number", PROP_BOOLEAN, PROP_NONE);
diff --git a/source/blender/makesrna/intern/rna_scene.c b/source/blender/makesrna/intern/rna_scene.c
index a5cf02b9ba4..2d8cbc1b768 100644
--- a/source/blender/makesrna/intern/rna_scene.c
+++ b/source/blender/makesrna/intern/rna_scene.c
@@ -3138,6 +3138,7 @@ static void rna_def_tool_settings(BlenderRNA *brna)
   prop = RNA_def_property(srna, "workspace_tool_type", PROP_ENUM, PROP_NONE);
   RNA_def_property_enum_sdna(prop, NULL, "workspace_tool_type");
   RNA_def_property_enum_items(prop, workspace_tool_items);
+  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_EDITOR_VIEW3D);
   RNA_def_property_ui_text(prop, "Drag", "Action when dragging in the viewport");
 
   /* Transform */