feat(window-switcher): mark desktops with waybar's icons

The card's desktop line showed the workspace number. waybar draws the same
eight desktops as CSS background images keyed by number, because its
format-icons takes text rather than paths; those names now live in the
Windows singleton and are resolved through the active icon theme, so a
theme switch follows the drawer and the bar and the switcher agree. A named
workspace, or one past eight, falls back to its number, and so does an icon
the active theme cannot resolve.

3 files changed, 62 insertions, 8 deletions

diff --git a/window-switcher/README.md b/window-switcher/README.md
index a9ddbd4..0f1cb90 100644
--- a/window-switcher/README.md
+++ b/window-switcher/README.md
@@ -15,7 +15,7 @@ a rofi list that showed the same windows as text.
     │      └────────────────────┘    └────────────────────┘        │
     │               firefox                   kitty                │
     │       a page title, elided...    ~/Programming/GIT/...       │
-    │                 [1]                      [4]                 │
+    │              [browser icon]         [server icon]            │
     │                                                              │
     └──────────────────────────────────────────────────────────────┘
 
@@ -23,6 +23,14 @@ The cards are ordered most recently used first, so the window you just left is
 the first one, the same order ALT+TAB implies. Windows on a `special:`
 workspace are the scratchpad, which has its own bind, and are left out.
 
+Each card's desktop marker is the same icon waybar draws for that workspace, so
+the switcher and the bar agree rather than showing a bare number. waybar keeps
+the eight icons as CSS background images keyed by workspace number
+(`styles/modules.css` in `waybar-theme-udt`), because its `format-icons` takes
+text and not paths; here the same names are resolved through the active icon
+theme with `Quickshell.iconPath`. A named workspace, or one past eight, has no
+icon and falls back to `[name]`.
+
 With nothing to switch to it says so, because a full-screen dim with nothing in
 it reads as a hang.
 
diff --git a/window-switcher/WindowCard.qml b/window-switcher/WindowCard.qml
index de026e8..b86d69d 100644
--- a/window-switcher/WindowCard.qml
+++ b/window-switcher/WindowCard.qml
@@ -29,6 +29,14 @@ Column {
     // that is appearing or going away. Everything below guards for it.
     readonly property var wl: toplevel.wayland ?? null
 
+    // The bar's icon for this window's workspace, empty for a named workspace.
+    // Resolved to a path here so the card can fall back to the number when the
+    // active icon theme has no such icon, rather than showing a blank marker.
+    readonly property string workspaceIconPath: {
+        const name = Windows.workspaceIcon(toplevel.workspace);
+        return name !== "" ? Quickshell.iconPath(name, true) : "";
+    }
+
     width: cardWidth
     spacing: 8
 
@@ -125,12 +133,26 @@ Column {
         font.pixelSize: 13
     }
 
-    Text {
-        width: parent.width
-        horizontalAlignment: Text.AlignHCenter
-        text: "[" + (card.toplevel.workspace ? card.toplevel.workspace.name : "?") + "]"
-        color: Theme.accent
-        font.family: Theme.fontFamily
-        font.pixelSize: 13
+    // The desktop marker, drawn with waybar's workspace icon rather than the
+    // number. A workspace with no icon keeps the number, so the line never
+    // goes blank.
+    Item {
+        width: card.width
+        height: 24
+
+        IconImage {
+            anchors.centerIn: parent
+            width: 22; height: 22
+            source: card.workspaceIconPath
+        }
+
+        Text {
+            anchors.centerIn: parent
+            visible: card.workspaceIconPath === ""
+            text: "[" + (card.toplevel.workspace ? card.toplevel.workspace.name : "?") + "]"
+            color: Theme.accent
+            font.family: Theme.fontFamily
+            font.pixelSize: 13
+        }
     }
 }
diff --git a/window-switcher/Windows.qml b/window-switcher/Windows.qml
index 040f4d4..fb582ad 100644
--- a/window-switcher/Windows.qml
+++ b/window-switcher/Windows.qml
@@ -64,4 +64,28 @@ Singleton {
     function closeWindow(toplevel) {
         Hyprland.dispatch(`hl.dsp.window.close({ window = "address:${addressOf(toplevel)}" })`);
     }
+
+    // The desktop marker on a card is the same icon waybar's bar draws for that
+    // workspace, so the switcher and the bar agree. waybar keeps them as CSS
+    // background images by workspace number (styles/modules.css); the names are
+    // repeated here and resolved through the active icon theme, because a
+    // QML-side icon has to go by name. A named workspace, or one past eight,
+    // has no icon and the card falls back to its number.
+    readonly property var workspaceIcons: ({
+        1: "web-browser",
+        2: "utilities-terminal",
+        3: "text-editor",
+        4: "network-server",
+        5: "document-edit",
+        6: "applications-graphics",
+        7: "internet-chat",
+        8: "input-gaming",
+    })
+
+    function workspaceIcon(workspace) {
+        if (!workspace) return "";
+        const n = parseInt(String(workspace.name), 10);
+        if (isNaN(n)) return "";
+        return root.workspaceIcons[n] ?? "";
+    }
 }