Display a single window!

src/Window.zig

@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: 2025 Ben Buhse <me@benbuhse.email>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+const Window = @This();
+
+context: *Context,
+
+window_v1: *river.WindowV1,
+
+width: i32 = 0,
+height: i32 = 0,
+x: i32 = 0,
+y: i32 = 0,
+
+link: wl.list.Link,
+
+pub fn init(window: *Window, context: *Context, river_window_v1: *river.WindowV1) void {
+    window.* = .{
+        .context = context,
+        .window_v1 = river_window_v1,
+        .link = undefined, // Handled by the wl.list
+    };
+
+    window.window_v1.setListener(*Window, windowListener, window);
+}
+
+fn windowListener(river_window_v1: *river.WindowV1, event: river.WindowV1.Event, window: *Window) void {
+    assert(window.window_v1 == river_window_v1);
+    switch (event) {
+        else => |ev| {
+            log.debug("unhandled event: {s}", .{@tagName(ev)});
+        },
+    }
+}
+
+pub fn manage(window: *Window) void {
+    if (window.width != window.context.wm.outputs.first().?.width or
+        window.height != window.context.wm.outputs.first().?.height)
+    {
+        window.width = window.context.wm.outputs.first().?.width;
+        window.height = window.context.wm.outputs.first().?.height;
+        log.debug("setting window width={d} and height={d}", .{ window.width, window.height });
+    }
+    window.window_v1.proposeDimensions(window.width, window.height);
+}
+
+pub fn render(window: *Window) void {
+    _ = window;
+}
+
+const std = @import("std");
+const assert = std.debug.assert;
+
+const wayland = @import("wayland");
+const wl = wayland.client.wl;
+const river = wayland.client.river;
+
+const Context = @import("main.zig").Context;
+
+const log = std.log.scoped(.Window);