support drop event

src/au.zig

@@ -4,7 +4,7 @@ const builtin = @import("builtin");
 const vk = @import("vk");
 const c = @import("c.zig");
 
-const EventBus = @import("au/EventBus.zig");
+const Bus = @import("au/Bus.zig");
 
 pub const use_debug_messenger = switch (builtin.mode) {
     .Debug, .ReleaseSafe => true,
@@ -63,7 +63,7 @@ var _qp: QueueProxy = undefined;
 
 var _instance: vk.Instance = undefined;
 var _window: Window = undefined;
-var _events: EventBus = undefined;
+var _bus: Bus = undefined;
 var _device: vk.Device = undefined;
 var _dconfig: CandidateDeviceInfo = undefined;
 var _queue: vk.Queue = undefined;
@@ -428,31 +428,31 @@ pub const Window = struct {
     }
 };
 
-pub fn wait_events() []const EventBus.Event {
-    _events.clear();
+pub fn wait_events() []const Bus.Event {
+    _bus.clear();
     c.glfwWaitEvents();
-    return _events.events.items;
+    return _bus.events.items;
 }
 
-pub fn poll_events() []const EventBus.Event {
-    _events.clear();
+pub fn poll_events() []const Bus.Event {
+    _bus.clear();
     c.glfwPollEvents();
-    return _events.events.items;
+    return _bus.events.items;
 }
 
-pub fn wait_events_timeout(seconds: f64) []const EventBus.Event {
-    _events.clear();
+pub fn wait_events_timeout(seconds: f64) []const Bus.Event {
+    _bus.clear();
     c.glfwWaitEventsTimeout(seconds);
-    return _events.events.items;
+    return _bus.events.items;
 }
 
 fn init_event_bus(alloc: std.mem.Allocator) !void {
-    _events = EventBus.init(alloc);
-    errdefer _events.deinit();
-    try _events.connect(&_window);
+    _bus = Bus.init(alloc);
+    errdefer _bus.deinit();
+    try _bus.connect(&_window);
 }
 
 fn deinit_event_bus() void {
-    try _events.disconnect(&_window);
-    _events.deinit();
+    try _bus.disconnect(&_window);
+    _bus.deinit();
 }