Add f1 key and add callback before main loop

src/main.zig

@@ -120,7 +120,7 @@ fn wlFrameHandleDone(data: ?*anyopaque, callback: ?*c.wl_callback, callback_data
     const new_callback: ?*c.wl_callback = c.wl_surface_frame(wl_state.surface);
     _ = c.wl_callback_add_listener(new_callback, &frame_callback_listener, wl_state);
 
-    std.debug.print("[Wayland] Frame ready\n", .{});
+    // std.debug.print("[Wayland] Frame ready\n", .{});
     wl_state.frame_ready = true;
 }
 
@@ -677,6 +677,11 @@ fn wlKeyboardHandleKey(data: ?*anyopaque, keyboard: ?*c.wl_keyboard, serial: u32
         c.XKB_KEY_Escape => {
             wl_state.running = false;
         },
+        c.XKB_KEY_F1 => {
+            const already_pressed: bool = wl_state.app_input.key.f1.down;
+            wl_state.app_input.key.f1.down = pressed;
+            wl_state.app_input.key.f1.pressing = pressed and already_pressed;
+        },
         c.XKB_KEY_f => {
             const already_pressed: bool = wl_state.app_input.key.f.down;
             wl_state.app_input.key.f.down = pressed;
@@ -880,7 +885,12 @@ pub fn main() u8 {
         .permanent_storage = app_permanent_storage,
     };
 
-    var frame_callback_added = false;
+    const callback: ?*c.wl_callback = c.wl_surface_frame(wl_surface);
+    if (callback) |cb| {
+        const ret: c_int = c.wl_callback_add_listener(cb, &frame_callback_listener, &wl_state);
+        std.debug.print("[Wayland] Added frame callback with ret {d}.\n", .{ret});
+    }
+    wl_state.frame_ready = true;
 
     var timer = std.time.Timer.start() catch {
         std.debug.print("[Wayland] ERROR: timer not supported.\n", .{});
@@ -998,23 +1008,13 @@ pub fn main() u8 {
 
         _ = c.wl_display_roundtrip(display);
 
-        if (!frame_callback_added) {
-            const callback: ?*c.wl_callback = c.wl_surface_frame(wl_surface);
-            if (callback) |cb| {
-                const ret: c_int = c.wl_callback_add_listener(cb, &frame_callback_listener, &wl_state);
-                std.debug.print("[Wayland] Added frame callback with ret {d}.\n", .{ret});
-            }
-            frame_callback_added = true;
-            wl_state.frame_ready = true;
-        }
-
         // std.posix.nanosleep(0, std.time.ns_per_ms * 32);
 
         const current = timer.lap();
-        const current_ms = current / std.time.ns_per_ms;
+        const current_ms: f64 = @as(f64, @floatFromInt(current)) / std.time.ns_per_ms;
         const sleep_time_ms: f64 = @as(f64, @floatFromInt(sleep_time)) / @as(f64, @floatFromInt(std.time.ns_per_ms));
         std.debug.print(
-            "Render: {d:.3}ms, Sleeping: {d:.3}ms, Frame: {d}ms.\n",
+            "Render: {d:2.3}ms, Sleeping: {d:2.3}ms, Frame: {d:.3}ms.\n",
             .{ render_time_ms, sleep_time_ms, current_ms },
         );
     }

src/platform.zig

@@ -16,6 +16,7 @@ pub const Key = struct {
 
 const Keyboard = struct {
     esc: Key,
+    f1: Key,
     f: Key,
     r: Key,
     q: Key,