notifications: play a sound for a new balloon

pw-play, once per new or replaced notification, only when the balloon
would show: the drawer, snooze, mute and DND that withhold the balloon
silence it too. A restart records the queue without playing it.

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

1 files changed, 34 insertions, 0 deletions

diff --git a/notifications/Balloons.qml b/notifications/Balloons.qml
index b02099c..1b3cce8 100644
--- a/notifications/Balloons.qml
+++ b/notifications/Balloons.qml
@@ -13,6 +13,7 @@ import Quickshell
 import Quickshell.Io
 import Quickshell.Wayland
 import QtQuick
+import "NotifyConfig.js" as NC
 
 // The balloon stack, in the corner and on the screen notifyd's config.json
 // names (bottom-right of DP-1 by default), over conky.
@@ -37,6 +38,39 @@ Scope {
     // (reloading icons, resetting hover) four times a second.
     readonly property var live: Notify.queue || []
 
+    // A sound per new or replaced notification (replace keeps the id and
+    // changes created), played only when its balloon would show now: the
+    // same drawer, snooze, mute and DND checks as NotificationBalloon. The
+    // first read after a start only records what is there, so a restart is
+    // silent. seen is rebuilt from the queue each time, so it never grows.
+    property var seen: ({})
+    property bool primed: false
+    Connections {
+        target: Notify
+        function onQueueChanged() {
+            const next = {};
+            let file = "";
+            for (const n of Notify.queue || []) {
+                const key = n.id + ":" + n.created;
+                next[key] = true;
+                if (!root.primed || root.seen[key] || file !== "") continue;
+                if (Notify.drawerOpen || Notify.snoozeUntil > Date.now()) continue;
+                if (NC.withheld(Notify.config, n, Notify.dnd)) continue;
+                file = NC.soundFor(Notify.config, n);
+            }
+            root.seen = next;
+            root.primed = true;
+            if (file !== "") {
+                // ponytail: one player, a new sound cuts the last; a queue of
+                // sounds if bursts ever need every one heard.
+                player.command = ["pw-play", file];
+                player.running = false;
+                player.running = true;
+            }
+        }
+    }
+    Process { id: player }
+
     // The window border gradient, from the same file Hyprland reads, so the
     // balloons wear the windows' border. udt-accent writes it as Hyprland
     // colours, `rgb(rrggbb)` or `rgba(rrggbbaa)`; Qt wants `#aarrggbb`. The