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1const std = @import("std");
2const vaxis = @import("vaxis");
3
4const log = std.log.scoped(.main);
5
6const Event = union(enum) {
7 key_press: vaxis.Key,
8 winsize: vaxis.Winsize,
9};
10
11pub fn main() !void {
12 var gpa = std.heap.GeneralPurposeAllocator(.{}){};
13 defer {
14 const deinit_status = gpa.deinit();
15 if (deinit_status == .leak) {
16 log.err("memory leak", .{});
17 }
18 }
19 const alloc = gpa.allocator();
20
21 var buffer: [1024]u8 = undefined;
22 var tty = try vaxis.Tty.init(&buffer);
23 defer tty.deinit();
24
25 var vx = try vaxis.init(alloc, .{});
26 defer vx.deinit(alloc, tty.writer());
27
28 var loop: vaxis.Loop(Event) = .{ .tty = &tty, .vaxis = &vx };
29 try loop.init();
30
31 try loop.start();
32 defer loop.stop();
33
34 try vx.enterAltScreen(tty.writer());
35 try vx.queryTerminal(tty.writer(), 1 * std.time.ns_per_s);
36
37 var read_buffer: [1024 * 1024]u8 = undefined; // 1MB buffer
38 var img1 = try vaxis.zigimg.Image.fromFilePath(alloc, "examples/zig.png", &read_buffer);
39 defer img1.deinit(alloc);
40
41 const imgs = [_]vaxis.Image{
42 try vx.transmitImage(alloc, tty.writer(), &img1, .rgba),
43 // var img1 = try vaxis.zigimg.Image.fromFilePath(alloc, "examples/zig.png");
44 // try vx.loadImage(alloc, tty.writer(), .{ .path = "examples/zig.png" }),
45 try vx.loadImage(alloc, tty.writer(), .{ .path = "examples/vaxis.png" }),
46 };
47 defer vx.freeImage(tty.writer(), imgs[0].id);
48 defer vx.freeImage(tty.writer(), imgs[1].id);
49
50 var n: usize = 0;
51
52 var clip_y: u16 = 0;
53
54 while (true) {
55 const event = loop.nextEvent();
56 switch (event) {
57 .key_press => |key| {
58 if (key.matches('c', .{ .ctrl = true })) {
59 return;
60 } else if (key.matches('l', .{ .ctrl = true })) {
61 vx.queueRefresh();
62 } else if (key.matches('j', .{}))
63 clip_y += 1
64 else if (key.matches('k', .{}))
65 clip_y -|= 1;
66 },
67 .winsize => |ws| try vx.resize(alloc, tty.writer(), ws),
68 }
69
70 n = (n + 1) % imgs.len;
71 const win = vx.window();
72 win.clear();
73
74 const img = imgs[n];
75 const dims = try img.cellSize(win);
76 const center = vaxis.widgets.alignment.center(win, dims.cols, dims.rows);
77 try img.draw(center, .{ .scale = .contain, .clip_region = .{
78 .y = clip_y,
79 } });
80
81 try vx.render(tty.writer());
82 }
83}