feat(palette): add an rgb_triple helper and the GTK role list

GTK's stylesheets write colours two ways: as a hex, and as a bare decimal
triple inside rgba(). The existing rgba() helper emits without spaces and
wraps the call itself, so neither form matches what the upstream theme
contains; rgb_triple emits just `r, g, b` and the template keeps the call.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/bin/udt-palette b/bin/udt-palette
index 09731de..f92a6b7 100755
--- a/bin/udt-palette
+++ b/bin/udt-palette
@@ -112,6 +112,17 @@ def rgb_array(c):
     return f"[{r}, {g}, {b}]"
 
 
+def rgb_triple(c):
+    """`r, g, b` with spaces, which is how GTK's CSS writes an rgba() colour.
+
+    The rgba() helper below emits without spaces and wraps in rgb()/rgba(),
+    neither of which matches what the upstream GTK theme contains, so the
+    substitution is on the bare triple and the template keeps the rgba() call.
+    """
+    r, g, b, _ = c
+    return f"{r}, {g}, {b}"
+
+
 def rgba(c):
     r, g, b, a = c
     return f"rgb({r},{g},{b})" if a == 100 else f"rgba({r},{g},{b},{a / 100:.2f})"
@@ -329,6 +340,12 @@ TYPORA_ROLES = ["bg", "bg_deep", "surface_alt", "fg", "fg_dim", "fg_faint",
                 "info", "highlight"]
 
 
+# The roles GTK's stylesheets reference. Both a hex and a decimal-triple form
+# of each is substituted, because the upstream theme writes colours both ways.
+GTK_ROLES = ["fg", "bg", "bg_alt", "bg_deep", "surface", "surface_alt",
+             "accent", "critical", "warning", "success", "highlight", "info",
+             "blue", "peach"]
+
 KVANTUM_ROLES = ["bg", "bg_alt", "surface", "surface_alt", "surface_high",
                  "fg", "fg_dim", "fg_faint", "mid_high", "accent",
                  "accent_dim", "accent_bright", "highlight", "critical"]