M0: desktop app: toolbar, browser, timeline, GPU viewport, view cube, sketch tools, dialogs, control channel

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/ui-egui/src/theme.rs

@@ -0,0 +1,70 @@
+//! Colours and widget style. A light theme in the spirit of desktop CAD tools; every colour
+//! the UI uses comes from [`Tokens`].
+
+use egui::{Color32, Stroke};
+
+#[derive(Clone, Copy, Debug)]
+pub struct Tokens {
+    pub app_bar: Color32,
+    pub toolbar: Color32,
+    pub tab_active: Color32,
+    pub panel: Color32,
+    pub panel_header: Color32,
+    pub border: Color32,
+    pub text: Color32,
+    pub text_dim: Color32,
+    pub accent: Color32,
+    pub accent_soft: Color32,
+    pub sketch_accent: Color32,
+    pub error: Color32,
+    pub warning: Color32,
+    pub icon: Color32,
+    pub icon_fill: Color32,
+    pub timeline: Color32,
+    pub hover: Color32,
+}
+
+impl Tokens {
+    pub const fn get() -> Tokens {
+        Tokens {
+            app_bar: Color32::from_rgb(52, 56, 64),
+            toolbar: Color32::from_rgb(246, 247, 249),
+            tab_active: Color32::from_rgb(255, 255, 255),
+            panel: Color32::from_rgb(250, 251, 252),
+            panel_header: Color32::from_rgb(236, 238, 242),
+            border: Color32::from_rgb(208, 212, 220),
+            text: Color32::from_rgb(38, 42, 50),
+            text_dim: Color32::from_rgb(110, 116, 128),
+            accent: Color32::from_rgb(38, 120, 218),
+            accent_soft: Color32::from_rgb(214, 230, 250),
+            sketch_accent: Color32::from_rgb(46, 150, 90),
+            error: Color32::from_rgb(214, 54, 54),
+            warning: Color32::from_rgb(222, 150, 30),
+            icon: Color32::from_rgb(70, 78, 92),
+            icon_fill: Color32::from_rgb(178, 196, 222),
+            timeline: Color32::from_rgb(232, 235, 240),
+            hover: Color32::from_rgb(226, 234, 246),
+        }
+    }
+}
+
+pub fn apply(ctx: &egui::Context) {
+    let t = Tokens::get();
+    let mut v = egui::Visuals::light();
+    v.panel_fill = t.panel;
+    v.window_fill = t.panel;
+    v.extreme_bg_color = Color32::WHITE;
+    v.selection.bg_fill = t.accent_soft;
+    v.selection.stroke = Stroke::new(1.0, t.accent);
+    v.widgets.noninteractive.bg_stroke = Stroke::new(1.0, t.border);
+    v.widgets.noninteractive.fg_stroke = Stroke::new(1.0, t.text);
+    v.widgets.inactive.fg_stroke = Stroke::new(1.0, t.text);
+    v.widgets.hovered.weak_bg_fill = t.hover;
+    v.widgets.hovered.bg_fill = t.hover;
+    v.window_corner_radius = egui::CornerRadius::same(6);
+    ctx.set_visuals(v);
+    ctx.global_style_mut(|s| {
+        s.spacing.item_spacing = egui::vec2(6.0, 4.0);
+        s.spacing.button_padding = egui::vec2(6.0, 3.0);
+    });
+}