paint-together 0.3.2

Classic Windows Paint, rebuilt in Rust, where kids on the same Wi-Fi draw on one picture together in real time
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84

//! Paint: a from-scratch Rust reimplementation of the Windows Paint app.

// A window of its own on Windows, without a console window behind it.
#![cfg_attr(all(windows, not(debug_assertions)), windows_subsystem = "windows")]

mod app;
mod brush;
mod collab;
mod crash;
mod history;
mod icons;
mod live_shape;
mod logo;
mod raster;
mod ribbon;
mod shapes;
#[cfg(test)]
mod tests;
mod text;
mod text_edit;
mod theme;

use eframe::egui;

fn main() -> eframe::Result {
    let mut args = std::env::args_os().skip(1);
    let first = args.next();
    // `--export-icon PATH [SIZE]`: used by the packaging scripts.
    if first.as_deref() == Some(std::ffi::OsStr::new("--export-icon")) {
        let out = args.next().map(std::path::PathBuf::from).unwrap_or_else(|| "AppIcon.png".into());
        let size = args.next().and_then(|s| s.to_str()?.parse().ok()).unwrap_or(1024);
        if let Err(e) = logo::render(size).save(&out) {
            eprintln!("couldn't write {}: {e}", out.display());
            std::process::exit(1);
        }
        return Ok(());
    }
    // `--join ADDRESS`: join a friend's drawing straight away; otherwise a picture to open.
    let (initial, join) = if first.as_deref() == Some(std::ffi::OsStr::new("--join")) {
        (None, args.next().and_then(|a| a.into_string().ok()))
    } else {
        (first.map(std::path::PathBuf::from), None)
    };
    let icon = logo::render(256);
    #[cfg_attr(not(windows), allow(unused_mut))]
    let mut options = eframe::NativeOptions {
        viewport: egui::ViewportBuilder::default()
            .with_title("Untitled - Paint")
            .with_app_id("paint")
            .with_inner_size([1460.0, 900.0])
            .with_min_inner_size([760.0, 480.0])
            .with_drag_and_drop(true)
            // Draw our own title bar under the traffic lights, like modern Mac apps.
            .with_fullsize_content_view(true)
            .with_titlebar_shown(false)
            .with_title_shown(false)
            .with_icon(egui::IconData { width: icon.width(), height: icon.height(), rgba: icon.into_raw() }),
        ..Default::default()
    };
    // Draw with Direct3D 12 on Windows: it's always there (in software at worst), while
    // some Vulkan and OpenGL drivers leave the window black or fail to start at all.
    // WGPU_BACKEND=vulkan (or gl) still picks another, should a computer need it.
    #[cfg(windows)]
    if let eframe::egui_wgpu::WgpuSetup::CreateNew(setup) = &mut options.wgpu_options.wgpu_setup {
        use eframe::wgpu::Backends;
        setup.instance_descriptor.backends = Backends::from_env().unwrap_or(Backends::DX12);
    }
    crash::watch();
    let run = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
        eframe::run_native("Paint", options, Box::new(move |cc| Ok(Box::new(app::PaintApp::new(cc, initial, join)))))
    }));
    match run {
        Ok(Ok(())) => Ok(()),
        Ok(Err(e)) => {
            crash::save(&format!("Couldn't open the window: {e}\n\n{e:?}"));
            crash::tell(&format!("Paint couldn't open its window.\n\n{e}"));
            Err(e)
        }
        Err(_) => {
            crash::tell("Sorry! Paint ran into a problem and had to close.");
            std::process::exit(101);
        }
    }
}