animate anchored theme colors on native and tty backends

1 files changed, 12 insertions, 1 deletions

diff --git a/src/tty/tty.zig b/src/tty/tty.zig
index 908f17d7..6047e5a2 100644
--- a/src/tty/tty.zig
+++ b/src/tty/tty.zig
@@ -527,7 +527,8 @@ pub fn run(init: std.process.Init, opts: pardes.Options) !void {
             var output = false;
             var native_pdf_page_changed = false;
             switch (event) {
-                .nop, .tick => {},
+                .nop => {},
+                .tick => core.update(.tick),
                 .quit => stop = true,
                 .winsize => |ws| {
                     try vx.resize(gpa, tty.writer(), ws);
@@ -799,6 +800,16 @@ pub fn run(init: std.process.Init, opts: pardes.Options) !void {
         try vx.render(tty.writer());
         tz_render.end();
         tracy.frameMark();
+
+        // A theme transition is the only reason this otherwise event-driven
+        // frontend redraws on a clock. Sleep on the loop thread, then make the
+        // next pass a tick; input and worker events can queue during the short
+        // sleep and are drained in that pass. No timer worker can outlive the
+        // loop, and at the exact endpoint we return to an indefinite wait.
+        if (core.themeAnimationActive()) {
+            std.Io.sleep(io, .fromMilliseconds(pardes.animation.frame_ms), .awake) catch {};
+            pending = .tick;
+        }
     }
 }