From a56a42c09622509ad9592445c2c77cf7d083a858 Mon Sep 17 00:00:00 2001
From: pravdomil <2387356+pravdomil@users.noreply.github.com>
Date: Sun, 11 Oct 2026 16:33:45 +0200
Subject: [PATCH] UI: show an open padlock on an unlocked Composition /
 Timeline viewer lock

The viewer lock in a tab group's header drew the same closed padlock in
both states, told apart only by brightness. Unlocked now draws an open
padlock, locked the closed one.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 crates/ui-egui/src/dock.rs  | 5 +++--
 crates/ui-egui/src/icons.rs | 8 ++++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/crates/ui-egui/src/dock.rs b/crates/ui-egui/src/dock.rs
index 054aa3598..ac6ed92f9 100644
--- a/crates/ui-egui/src/dock.rs
+++ b/crates/ui-egui/src/dock.rs
@@ -654,7 +654,8 @@ pub fn doc_tabs(
     out
 }
 
-/// A viewer lock button (Composition viewers and the Timeline keep their comp while locked).
+/// A viewer lock button (Composition viewers and the Timeline keep their comp while locked): a
+/// closed padlock while locked, an open one while unlocked.
 /// Returns true when clicked. Automation: `panel.tab.<panel>.lock`.
 pub fn lock_button(ui: &mut egui::Ui, rect: Rect, panel: PanelKind, locked: bool, t: &Tokens, reg: &mut crate::automation::Registry) -> bool {
     let resp = ui.interact(rect, egui::Id::unique(("tab-lock", panel.id())), Sense::click());
@@ -665,7 +666,7 @@ pub fn lock_button(ui: &mut egui::Ui, rect: Rect, panel: PanelKind, locked: bool
     } else {
         t.text_faint
     };
-    icons::paint(ui.painter(), rect.shrink(2.0), Icon::Lock, color);
+    icons::paint(ui.painter(), rect.shrink(2.0), if locked { Icon::Lock } else { Icon::LockOpen }, color);
     reg.add_response(&format!("panel.tab.{}.lock", panel.id()), &resp, if locked { "Unlock" } else { "Lock" });
     crate::widgets::focus_outline(ui, &resp, t);
     resp.clicked()
diff --git a/crates/ui-egui/src/icons.rs b/crates/ui-egui/src/icons.rs
index 949ea3771..385a6b1ca 100644
--- a/crates/ui-egui/src/icons.rs
+++ b/crates/ui-egui/src/icons.rs
@@ -48,6 +48,8 @@ pub enum Icon {
     Speaker,
     Solo,
     Lock,
+    /// An open padlock: the shackle lifted clear of the body on the right.
+    LockOpen,
     Shy,
     Collapse,
     Quality,
@@ -402,6 +404,12 @@ pub fn paint(painter: &Painter, rect: Rect, icon: Icon, color: Color32) {
             pen.arc(8.0, 7.0, 3.0, 180.0, 360.0);
             pen.dot(8.0, 10.5, 1.0);
         }
+        LockOpen => {
+            pen.rect(3.5, 7.0, 12.5, 14.0);
+            pen.arc(8.0, 4.0, 3.0, 180.0, 360.0);
+            pen.line(&[(5.0, 4.0), (5.0, 7.0)]);
+            pen.dot(8.0, 10.5, 1.0);
+        }
         Shy => {
             pen.circle(8.0, 8.0, 5.8);
             pen.dot(6.0, 7.0, 0.8);