colours from the wallpaper through matugen

- matugen/amane.colors: a matugen template (primary, on_primary,
  primary_container, primary_fixed, on_surface, on_surface_variant,
  outline_variant, surface_container high/normal/lowest) that skwd-wall
  renders into ~/.config/amane/theme on every new wallpaper
- theme.rs: a Theme service reads that file and shell.conf twice a
  second (matugen replaces its output, which a file watch can lose) and
  fades all ten colours together on one Animation; without a theme file
  the shell keeps its pink on purple
- the island, the idle pill and the workspace pill draw with the theme;
  white overlays (chips, tracks, hover tints) stay as they are
- shell.conf: cover_colors (true: the open media card and equalizer take
  the cover's gradient as background, accents stay the wallpaper's) and
  transition_ms (0 switches instantly), both applied without a restart
- parse: settings() and rgb(), with a test (6 pass)
- checked on the desktop with a hand-written theme file: pill, workspace
  pill and card recolour, cover_colors switches the card background live

src/workspaces.rs

@@ -4,11 +4,12 @@ use std::thread;
 use std::time::Duration;
 
 use amane::{
-    Animation, Blend, Center, Color, Full, Horizontal, InputArea, Layer, LayerWindow, Monitor, Padding, Palette, Parent, Pointer,
+    Animation, Blend, Center, Color, Full, Horizontal, InputArea, Layer, LayerWindow, Monitor, Padding, Parent, Pointer,
     Rectangle, Row, Service, Shadow, Start, Text, Vertical, Weight, Widget, Workspace, Workspaces, Zone,
 };
 
-use crate::island::{CHIP_HOVER, CLEAR, COMPACT_H, DIM, EDGE, HOVER_MS, INK, PINK, SHADOW, TEXT, TOP_GAP, backdrop, backdrop_colors, faded};
+use crate::island::{CHIP_HOVER, CLEAR, COMPACT_H, HOVER_MS, SHADOW, TOP_GAP, backdrop, faded};
+use crate::theme;
 
 // one round slot per workspace, inside the pill's inset; the pill sits LEFT px from the monitor's edge
 const SLOT: f32 = 28.0;
@@ -31,14 +32,15 @@ impl Service for Hover {
 
 /*
  * a pill in the top left corner of every monitor with that monitor's hyprland workspaces,
- * in the island's look (cover gradient, pink glow). the focused workspace is pink, the one
- * shown on another monitor a softer pink, empty ones dim; a click switches to it.
+ * in the wallpaper's colours like the island. the focused workspace takes the accent, the
+ * one shown on another monitor a softer accent, empty ones dim; a click switches to it.
  * Workspaces follows hyprland's events, so nothing polls
  */
 pub fn view(monitor: &Monitor) -> LayerWindow {
+    theme::begin();
+
     let workspaces = Workspaces::read();
     let hover = Hover::read();
-    let palette = Palette::read();
 
     // special workspaces (scratchpads) aren't places to switch to
     let here: Vec<&Workspace> = workspaces
@@ -78,14 +80,16 @@ pub fn view(monitor: &Monitor) -> LayerWindow {
             _ => workspace.index().to_string(),
         };
 
-        let (fill, color, weight) = if workspace.focused() {
-            (PINK, INK, Weight::Bold)
-        } else if workspace.active() {
-            (faded(PINK, 70), PINK, Weight::Bold)
-        } else {
-            let resting = if workspace.windows() > 0 { TEXT } else { DIM };
+        let theme = theme::now();
 
-            (Color::blend(CLEAR, CHIP_HOVER, lit), Color::blend(resting, TEXT, lit), Weight::Regular)
+        let (fill, color, weight) = if workspace.focused() {
+            (theme.accent, theme.on_accent, Weight::Bold)
+        } else if workspace.active() {
+            (faded(theme.accent, 70), theme.accent, Weight::Bold)
+        } else {
+            let resting = if workspace.windows() > 0 { theme.text } else { theme.dim };
+
+            (Color::blend(CLEAR, CHIP_HOVER, lit), Color::blend(resting, theme.text, lit), Weight::Regular)
         };
 
         slots.push(Box::new(
@@ -103,15 +107,15 @@ pub fn view(monitor: &Monitor) -> LayerWindow {
         ));
     }
 
-    let colors = backdrop_colors(&palette);
+    let theme = theme::now();
 
     let pill = Rectangle::new()
         .width(width)
         .height(COMPACT_H)
         .radius(Full)
-        .fill(backdrop(&colors, 255))
-        .border(1.0, EDGE)
-        .shadow(Shadow::drop(PINK).opacity(0.3).blur(22.0))
+        .fill(backdrop(&theme.surfaces(), 255))
+        .border(1.0, theme.outline)
+        .shadow(Shadow::drop(theme.accent).opacity(0.3).blur(22.0))
         .padding(INSET)
         .align_child(Start, Center)
         .child(Row::new(slots).gap(SLOT_GAP).align(Center));