feat(statusbar): isolate action menu on the pill and right-click

Clicking the ISO pill now opens a small menu with Isolate Objects, Hide
Objects and End Isolation instead of ending isolation directly; rows
that don't apply (no selection / nothing hidden) are dimmed. The same
actions are added to the viewport right-click menu.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

src/ui/isolate_popup.rs

@@ -0,0 +1,117 @@
+//! Isolate action menu — Isolate / Hide / End Isolation. Opened from the
+//! ISO status pill, rendered as a floating overlay above the status bar
+//! (same pattern as the scale picker). The same actions are also offered
+//! in the viewport right-click menu.
+
+use iced::widget::{button, column, container, mouse_area, row, text};
+use iced::{Background, Border, Color, Element, Fill, Length, Padding, Theme};
+
+use crate::app::Message;
+
+/// Full-screen overlay: transparent click-catcher + action list pinned
+/// bottom-right, above the status bar.
+///
+/// - `has_selection`: enables Isolate / Hide (they act on the selection).
+/// - `isolation_active`: enables End Isolation (something is hidden).
+pub fn isolate_popup_overlay(has_selection: bool, isolation_active: bool) -> Element<'static, Message> {
+    let rows = column![
+        action_row(
+            "Isolate Objects",
+            has_selection,
+            Message::Command("ISOLATEOBJECTS".to_string()),
+        ),
+        action_row(
+            "Hide Objects",
+            has_selection,
+            Message::Command("HIDEOBJECTS".to_string()),
+        ),
+        action_row(
+            "End Isolation",
+            isolation_active,
+            Message::Command("UNISOLATEOBJECTS".to_string()),
+        ),
+    ];
+
+    let panel = container(rows)
+        .style(|_: &Theme| container::Style {
+            background: Some(Background::Color(PANEL_BG)),
+            border: Border {
+                color: PANEL_BORDER,
+                width: 1.0,
+                radius: 3.0.into(),
+            },
+            ..Default::default()
+        })
+        .width(Length::Fixed(160.0));
+
+    let positioned = container(panel)
+        .align_right(Fill)
+        .align_bottom(Fill)
+        .padding(Padding {
+            bottom: 27.0,
+            right: 4.0,
+            top: 0.0,
+            left: 0.0,
+        })
+        .width(Fill)
+        .height(Fill);
+
+    mouse_area(positioned)
+        .on_press(Message::CloseIsolatePopup)
+        .into()
+}
+
+fn action_row(label: &'static str, enabled: bool, msg: Message) -> Element<'static, Message> {
+    let lbl = text(label)
+        .size(11)
+        .color(if enabled { LABEL_ON } else { LABEL_OFF });
+    let content = row![lbl].align_y(iced::Center);
+
+    let mut btn = button(content)
+        .style(move |_: &Theme, status| button::Style {
+            background: Some(Background::Color(match (enabled, status) {
+                (true, button::Status::Hovered) => ROW_HOVER,
+                _ => Color::TRANSPARENT,
+            })),
+            ..Default::default()
+        })
+        .width(Fill)
+        .padding([4, 12]);
+    if enabled {
+        btn = btn.on_press(msg);
+    }
+    btn.into()
+}
+
+// ── Colours ───────────────────────────────────────────────────────────────
+
+const PANEL_BG: Color = Color {
+    r: 0.15,
+    g: 0.15,
+    b: 0.15,
+    a: 1.0,
+};
+const PANEL_BORDER: Color = Color {
+    r: 0.32,
+    g: 0.32,
+    b: 0.32,
+    a: 1.0,
+};
+const ROW_HOVER: Color = Color {
+    r: 0.22,
+    g: 0.22,
+    b: 0.22,
+    a: 1.0,
+};
+const LABEL_ON: Color = Color {
+    r: 0.92,
+    g: 0.92,
+    b: 0.92,
+    a: 1.0,
+};
+const LABEL_OFF: Color = Color {
+    r: 0.5,
+    g: 0.5,
+    b: 0.5,
+    a: 1.0,
+};

src/ui/mod.rs

@@ -4,6 +4,7 @@ pub const ROW_H: f32 = 26.0;
 
 pub mod about;
 pub mod app_menu;
+pub mod isolate_popup;
 pub mod update_notice;
 pub mod command_line;
 pub mod dimstyle;

src/ui/statusbar.rs

@@ -177,12 +177,8 @@ impl StatusBar {
         }
         if vis(StatusPill::Isolate) {
             right_status = right_status.push(tip(
-                toggle_pill(
-                    "ISO",
-                    isolation_active,
-                    Message::Command("UNISOLATEOBJECTS".into()),
-                ),
-                "Isolate Objects\nISOLATEOBJECTS / HIDEOBJECTS to hide; click to restore",
+                toggle_pill("ISO", isolation_active, Message::ToggleIsolatePopup),
+                "Isolate Objects\nClick for Isolate / Hide / End",
             ));
         }
         if vis(StatusPill::Vp) && !vp_label.is_empty() {