ona/demos/canvas.zig

const gfx = @import("gfx");

const gui = @import("gui");

const hid = @import("hid");

const ona = @import("ona");

pub const main = ona.App.game
	.with_module(gfx)
	.with_module(hid)
	.with_module(gui)
	.with_system(.load, ona.system_fn(load), .{ .label = "Hello Ona" }).build();

fn load(canvas: ona.Write(gui.Canvas)) !void {
	const item = try canvas.state.append("", .{
		.x = 0,
		.y = 0,
		.width = 256,
		.height = 256,
	});

	try canvas.state.set_block(item, .{
		.has_color = gfx.colors.purple,
	});

	try canvas.state.set_label(item, .{
		.has_text = "Hello, world",
	});

	const item2 = try canvas.state.append("", .{
		.x = 128,
		.y = 128,
		.width = 256,
		.height = 256,
	});

	try canvas.state.set_block(item2, .{
		.has_color = .{0, 1, 0, 1},
	});

	canvas.state.set_parent(item2, item);
}