UV: add toggle to show the grid over the image

In UV editor, previously unable to see grid and image at same time.

Maniphest Tasks: T78391

Differential Revision: https://developer.blender.org/D16038

3 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/draw/engines/overlay/overlay_grid.cc b/source/blender/draw/engines/overlay/overlay_grid.cc
index 4a4d9ee6c19..89fc6ec2eb7 100644
--- a/source/blender/draw/engines/overlay/overlay_grid.cc
+++ b/source/blender/draw/engines/overlay/overlay_grid.cc
@@ -51,6 +51,9 @@ void OVERLAY_grid_init(OVERLAY_Data *vedata)
                                                  true;
     if (background_enabled) {
       grid_flag = GRID_BACK | PLANE_IMAGE;
+      if (sima->flag & SI_GRID_OVER_IMAGE) {
+        grid_flag = PLANE_IMAGE;
+      }
     }
 
     const bool draw_grid = is_uv_edit || !ED_space_image_has_buffer(sima);
diff --git a/source/blender/makesdna/DNA_space_types.h b/source/blender/makesdna/DNA_space_types.h
index 6bb8dc6aa18..5a819ead4ec 100644
--- a/source/blender/makesdna/DNA_space_types.h
+++ b/source/blender/makesdna/DNA_space_types.h
@@ -1319,6 +1319,8 @@ typedef enum eSpaceImage_Flag {
   SI_SHOW_R = (1 << 27),
   SI_SHOW_G = (1 << 28),
   SI_SHOW_B = (1 << 29),
+
+  SI_GRID_OVER_IMAGE = (1 << 30),
 } eSpaceImage_Flag;
 
 typedef enum eSpaceImageOverlay_Flag {
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 18f686b8946..9bbe37b5187 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -3614,6 +3614,12 @@ static void rna_def_space_image_uv(BlenderRNA *brna)
       prop, "Tile Grid Shape", "How many tiles will be shown in the background");
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_IMAGE, NULL);
 
+  prop = RNA_def_property(srna, "show_grid_over_image", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "flag", SI_GRID_OVER_IMAGE);
+  RNA_def_property_boolean_default(prop, true);
+  RNA_def_property_ui_text(prop, "Grid Over Image", "Show the grid over the image");
+  RNA_def_property_update(prop, NC_SPACE | ND_SPACE_IMAGE, NULL);
+
   prop = RNA_def_property(srna, "use_custom_grid", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "flag", SI_CUSTOM_GRID);
   RNA_def_property_boolean_default(prop, true);