feat(presentation): draw a running game as its own state

The module emits a third class, gaming, when the shell's game detector
holds presentation on. It gets its own icon rather than sharing the
presentation one: the click is inert in that state, so the pill has to
say why the mode is on and that clicking will not turn it off.

The icon joins wb-icon's selftest, which is what makes an icon theme
missing it fail at install time instead of rendering an empty pill.

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

3 files changed, 14 insertions, 0 deletions

diff --git a/bin/wb-icon b/bin/wb-icon
index b8bb098..ebbd57d 100755
--- a/bin/wb-icon
+++ b/bin/wb-icon
@@ -144,6 +144,7 @@ def selftest():
     presentation_icons = [
         "preferences-desktop-screensaver",  # off
         "x-office-presentation",            # on
+        "input-gaming",                     # held on by a running game
     ]
     mail_icons = ["mail-unread"]
 
diff --git a/modules/custom/presentation.jsonc b/modules/custom/presentation.jsonc
index 8544b26..a6dd20a 100644
--- a/modules/custom/presentation.jsonc
+++ b/modules/custom/presentation.jsonc
@@ -10,6 +10,12 @@
 // normal state before anything has written one, and a file cannot report
 // whether a watcher is alive anyway.
 //
+// A third class, gaming, covers the mode being held on by a running game: the
+// shell's detector owns status.gaming and presentation is the OR of the two,
+// so a game turns the mode on without touching the manual half. The click is
+// inert in that state, statusctl refuses the toggle, because the detector
+// would reassert it within its poll anyway.
+//
 // statusctl talks to files under XDG_RUNTIME_DIR rather than to quickshell,
 // so this keeps working while the shell is down.
 // The format is a single space, and it has to be something. It defaults to
diff --git a/styles/modules.css b/styles/modules.css
index 3aa55c6..b0e2f2a 100644
--- a/styles/modules.css
+++ b/styles/modules.css
@@ -246,3 +246,10 @@
 #custom-presentation.activated {
 	background-image: url("@ICON:x-office-presentation@");
 }
+
+/* A running game holds presentation on by itself, through a separate state
+ * file the shell's detector owns. It gets its own icon because the click is
+ * inert here: the mode is not off until the game exits. */
+#custom-presentation.gaming {
+	background-image: url("@ICON:input-gaming@");
+}