feat(Renderer): update interface functions to start supporting buffered rendering

src/main.zig

@@ -26,10 +26,30 @@ pub fn main() !void {
     const allocator = gpa.allocator();
 
     var app: App = .{};
-    var renderer: App.Renderer = .{};
+    var renderer = App.Renderer.init(allocator);
+    defer renderer.deinit();
     // FIX: when not running fullscreen, the application needs to screen down accordingly to display the contents
     // -> size hint how much should it use?
 
+    // var layout = Layout.createFrom(layout: {
+    //     var stack = Layout.HStack.init(allocator, .{
+    //         Widget.createFrom(blk: {
+    //             var spacer = Widget.Spacer.init();
+    //             break :blk &spacer;
+    //         }),
+    //         Widget.createFrom(blk: {
+    //             const file = try std.fs.cwd().openFile("./src/app.zig", .{});
+    //             defer file.close();
+    //             var widget = Widget.RawText.init(allocator, file);
+    //             break :blk &widget;
+    //         }),
+    //         Widget.createFrom(blk: {
+    //             var spacer = Widget.Spacer.init();
+    //             break :blk &spacer;
+    //         }),
+    //     });
+    //     break :layout &stack;
+    // });
     var layout = Layout.createFrom(layout: {
         var hstack = Layout.HStack.init(allocator, .{
             Widget.createFrom(blk: {
@@ -113,6 +133,9 @@ pub fn main() !void {
 
         switch (event) {
             .quit => break,
+            .resize => |size| {
+                renderer.resize(size);
+            },
             .key => |key| {
                 // ctrl+c to quit
                 if (Key.matches(key, .{ .cp = 'c', .mod = .{ .ctrl = true } })) {
@@ -135,7 +158,6 @@ pub fn main() !void {
             .err => |err| {
                 log.err("Received {any} with message: {s}", .{ err.err, err.msg });
             },
-            else => {},
         }
         // NOTE: this currently re-renders the screen for every key-press -> which might be a bit of an overkill
         const events = try layout.handle(event);
@@ -143,5 +165,6 @@ pub fn main() !void {
             app.postEvent(e);
         }
         try layout.render(&renderer);
+        try renderer.flush();
     }
 }