Fix T83868: Button animation states no longer visible without emboss

This bug was caused by making it so that non-embossed modifier icon
buttons could become an operator button and retain their red highlight
for disabled modifiers. The icon button needs emboss turned off, but
in earlier versions of Blender, `UI_EMBOSS_NONE` would be overridden
by animation or red alert states.

Instead of abusing "NONE" to mean "none unless there is animation or
red alert", this commit adds a new emboss flag for that situation,
`UI_EMBOSS_NONE_OR_STATUS`, which uses no emboss unless there is an
animation state, or another status. There are only a few situations
where this is necessary, so the change isn't too big.

Differential Revision: https://developer.blender.org/D9902

1 files changed, 3 insertions, 2 deletions

diff --git a/release/scripts/startup/bl_ui/properties_data_mesh.py b/release/scripts/startup/bl_ui/properties_data_mesh.py
index 924a89755f8..a9d7b8d71f3 100644
--- a/release/scripts/startup/bl_ui/properties_data_mesh.py
+++ b/release/scripts/startup/bl_ui/properties_data_mesh.py
@@ -117,12 +117,13 @@ class MESH_UL_shape_keys(UIList):
             split = layout.split(factor=0.66, align=False)
             split.prop(key_block, "name", text="", emboss=False, icon_value=icon)
             row = split.row(align=True)
+            row.emboss = 'UI_EMBOSS_NONE_OR_STATUS'
             if key_block.mute or (obj.mode == 'EDIT' and not (obj.use_shape_key_edit_mode and obj.type == 'MESH')):
                 row.active = False
             if not item.id_data.use_relative:
-                row.prop(key_block, "frame", text="", emboss=False)
+                row.prop(key_block, "frame", text="")
             elif index > 0:
-                row.prop(key_block, "value", text="", emboss=False)
+                row.prop(key_block, "value", text="")
             else:
                 row.label(text="")
             row.prop(key_block, "mute", text="", emboss=False)