From 4eb36873d4ca4b0faf0e54dbeab8f5f6450dd704 Mon Sep 17 00:00:00 2001
From: srdusr <99972264+srdusr@users.noreply.github.com>
Date: Fri, 3 Oct 2025 22:59:00 +0200
Subject: Make the secondary-cursor sprite opt-in and expire stale entries

Live report: a second cursor appeared uninvited and unusably (frozen,
uncontrollable) on screen. Multi-cursor Phase 1 rendered one sprite per
physical libinput pointer device that had ever reported a position, with
no way to turn it off and no expiry - so a phantom device (a real mouse's
side-button/scroll cluster enumerating as its own HID path is a common
case) that reports once and never moves again left a frozen ghost sprite
with nothing to control or dismiss it.

Adds general.multi_cursor (default false, live-settable via
`srd set multi_cursor <bool>`) and keys secondary_cursors to
(Point, Instant) so both the recording side (udev/session.rs) and the
render side (udev/render.rs) drop any entry older than
SECONDARY_CURSOR_TIMEOUT (1.5s). The "agent controls a window without
interrupting the user" use case this report also raised was never gated
on this flag - that's Multi-cursor Phase 2's pinned virtual-pointer
delivery, which never shows a visible cursor at all.
---
 crates/platform/src/ipc/dispatch.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'crates/platform/src/ipc/dispatch.rs')

diff --git a/crates/platform/src/ipc/dispatch.rs b/crates/platform/src/ipc/dispatch.rs
index 5a969c7..313a79c 100644
--- a/crates/platform/src/ipc/dispatch.rs
+++ b/crates/platform/src/ipc/dispatch.rs
@@ -27,6 +27,7 @@ pub(crate) fn handle_request(line: &[u8], wm: &std::rc::Rc<std::cell::RefCell<Wi
                 night_light: wm.color_filter == srdwm_core::ColorFilter::NightLight,
                 reading_mode: wm.color_filter == srdwm_core::ColorFilter::ReadingMode,
                 phone_mode: wm.phone_mode,
+                multi_cursor: wm.multi_cursor_enabled,
             };
             (serde_json::to_vec(&settings).unwrap_or_default(), false)
         }
@@ -518,6 +519,14 @@ fn handle_set(req: &serde_json::Value, wm: &std::rc::Rc<std::cell::RefCell<Windo
             wm.borrow_mut().phone_mode = v;
             (ok(), true)
         }
+        // `srd set multi_cursor <bool>` - live equivalent of `general.
+        // multi_cursor`. See `WindowManager::multi_cursor_enabled`'s own
+        // doc comment for why this is opt-in rather than always-on.
+        "multi_cursor" => {
+            let Some(v) = value.and_then(|v| v.as_bool()) else { return (err("multi_cursor needs a boolean value"), false) };
+            wm.borrow_mut().multi_cursor_enabled = v;
+            (ok(), true)
+        }
         "blur" => (err("blur is not supported - no GPU shader path on this compositor's software renderer yet"), false),
         // The two ported Hyprland `decoration:screen_shader` scripts --
         // mutually exclusive by construction (`srdwm_core::ColorFilter` is
-- 
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