From aaf160f38b2b99090103a5c7f5408d7fe956bcd1 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Wed, 4 May 2022 11:16:30 -0700
Subject: [PATCH] set refresh callback for redraw

---
 src/Window.zig | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/Window.zig b/src/Window.zig
index a4b79fe54..b242898db 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -197,6 +197,7 @@ pub fn create(alloc: Allocator, loop: libuv.Loop) !*Window {
     window.setCharCallback(charCallback);
     window.setKeyCallback(keyCallback);
     window.setFocusCallback(focusCallback);
+    window.setRefreshCallback(refreshCallback);
 
     return self;
 }
@@ -377,6 +378,16 @@ fn focusCallback(window: glfw.Window, focused: bool) void {
     }
 }
 
+fn refreshCallback(window: glfw.Window) void {
+    const tracy = trace(@src());
+    defer tracy.end();
+
+    const win = window.getUserPointer(Window) orelse return;
+
+    // The point of this callback is to schedule a render, so do that.
+    win.render_timer.schedule() catch unreachable;
+}
+
 fn cursorTimerCallback(t: *libuv.Timer) void {
     const tracy = trace(@src());
     defer tracy.end();