Something went wrong. Try again.
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102const std = @import("std");const vaxis = @import("vaxis");const vxfw = vaxis.vxfw;
const Text = vxfw.Text;const ListView = vxfw.ListView;const Widget = vxfw.Widget;
const Model = struct { list_view: ListView,
pub fn widget(self: *Model) Widget { return .{ .userdata = self, .eventHandler = Model.typeErasedEventHandler, .drawFn = Model.typeErasedDrawFn, }; }
pub fn typeErasedEventHandler(ptr: *anyopaque, ctx: *vxfw.EventContext, event: vxfw.Event) anyerror!void { const self: *Model = @ptrCast(@alignCast(ptr)); try ctx.requestFocus(self.list_view.widget()); switch (event) { .key_press => |key| { if (key.matches('q', .{}) or key.matchExact('c', .{ .ctrl = true })) { ctx.quit = true; return; } }, else => {}, } }
fn typeErasedDrawFn(ptr: *anyopaque, ctx: vxfw.DrawContext) std.mem.Allocator.Error!vxfw.Surface { const self: *Model = @ptrCast(@alignCast(ptr)); const max = ctx.max.size();
const list_view: vxfw.SubSurface = .{ .origin = .{ .row = 1, .col = 1 }, .surface = try self.list_view.draw(ctx), };
const children = try ctx.arena.alloc(vxfw.SubSurface, 1); children[0] = list_view;
return .{ .size = max, .widget = self.widget(), .buffer = &.{}, .children = children, }; }};
pub fn main(init: std.process.Init) !void { const io = init.io; const alloc = init.gpa;
var buffer: [1024]u8 = undefined; var app: vxfw.App = try .init(io, alloc, init.environ_map, &buffer); defer app.deinit();
const model = try alloc.create(Model); defer alloc.destroy(model);
const n = 80; var texts: std.ArrayList(Widget) = try .initCapacity(alloc, n); var allocs: std.ArrayList(*Text) = try .initCapacity(alloc, n); defer { for (allocs.items) |tw| { alloc.free(tw.text); alloc.destroy(tw); } allocs.deinit(alloc); texts.deinit(alloc); }
for (0..n) |i| { const t = std.fmt.allocPrint(alloc, "List Item {d} of {d}", .{ i, n }) catch "placeholder"; const tw = try alloc.create(Text); tw.* = .{ .text = t }; _ = try allocs.append(alloc, tw); _ = try texts.append(alloc, tw.widget()); }
model.* = .{ .list_view = .{ .wheel_scroll = 3, .scroll = .{ .wants_cursor = true, }, .children = .{ .slice = texts.items }, }, };
try app.run(model.widget(), .{});}
test { std.testing.refAllDecls(@This());}