Unlucky Launcher v0.2.0
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首个 iced + Material 3 Expressive 版本的源码快照。
完整历史与日常提交在 dev 分支;main 只放阶段性快照。
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AskaEth committed 2026-11-05 14:22:11 +08:00
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//! 截图验收通道的参数解析与流程(`--screenshot*` / `--data-dir` / `--mock`)。
//!
//! 为什么用进程内渲染而不是截屏:验收机没有交互桌面(`CopyFromScreen` 直接失败),
//! 而 Slint 的软件渲染器能把场景渲进内存像素缓冲(`Window::take_snapshot`),
//! 结果与屏幕上逐像素一致且不需要 GPU(M41 落地的通道,这里只加页面/中间态参数)。
//!
//! 中间态(安装进度 / 启动事件流)走真实后端:`--screenshot-install <版本>` 会真的发起
//! 一次安装并停若干毫秒后取图,`--screenshot-launch <实例>` 同理。
use std::path::PathBuf;
use crate::ui_bind::AppUi;
use unlucky_presenter::backend::AppOptions;
use unlucky_presenter::dto::AppCommand;
/// 一次截图请求。
#[derive(Debug, Clone, Default)]
pub struct ShotOptions {
/// 输出 PNG 路径
pub path: String,
/// 页面名(instances / download / java / logs / settings / account / appearance / agent)
pub page: Option<String>,
/// 打开新建实例向导
pub wizard: bool,
/// 发起一次真实安装并停 `dwell_ms` 后取图(中间态)
pub install: Option<String>,
/// 安装走哪个加载器(`--screenshot-loader forge`;缺省 = 原版)
pub loader: Option<String>,
/// 发起一次真实启动并停 `dwell_ms` 后取图(中间态)
pub launch: Option<String>,
/// 打开一个日志会话(日志页有数据态:日志行 + 诊断卡片)
pub session: Option<String>,
/// 中间态停留毫秒(默认 2500)
pub dwell_ms: u64,
}
impl ShotOptions {
/// 中间态默认停留时长。
pub const DEFAULT_DWELL_MS: u64 = 2_500;
}
/// 从命令行读启动选项(数据根 / mock)。
pub fn app_options() -> AppOptions {
AppOptions {
data_root: value_of("--data-dir").map(PathBuf::from),
mock: flag("--mock"),
}
}
/// 从命令行读截图请求;没有 `--screenshot` 时返回 `None`。
pub fn shot_options() -> Option<ShotOptions> {
let path = value_of("--screenshot")?;
let page = value_of("--screenshot-page");
let mut options = ShotOptions {
path,
page: if flag("--screenshot-settings") {
Some("appearance".to_string())
} else {
page
},
wizard: flag("--screenshot-wizard"),
install: value_of("--screenshot-install"),
loader: value_of("--screenshot-loader"),
launch: value_of("--screenshot-launch"),
session: value_of("--screenshot-session"),
dwell_ms: value_of("--screenshot-dwell")
.and_then(|value| value.parse().ok())
.unwrap_or(ShotOptions::DEFAULT_DWELL_MS),
};
if options.dwell_ms < 500 {
options.dwell_ms = 500;
}
options.page = options.page.filter(|page| !page.trim().is_empty());
Some(options)
}
/// 执行截图流程:切页 → (可选)中间态 → 渲染 PNG。
///
/// # Errors
/// 窗口显示/快照/写文件失败时返回错误。
pub fn capture(app: &AppUi, options: &ShotOptions) -> Result<(), slint::PlatformError> {
if let Some(page) = &options.page {
app.open_page(page);
// 先给后端一次全量刷新:版本清单要在后台线程里拉(12h 缓存),
// 下载页/Java 页/向导需要它才有「有数据态」。
let warmup = if matches!(page.as_str(), "download" | "java") {
4_000
} else {
1_200
};
app.dispatch_and_run(AppCommand::RefreshAll, warmup);
}
if options.wizard {
app.open_wizard();
}
if let Some(version) = &options.install {
app.dispatch_and_run(
install_command(version, options.loader.as_deref()),
options.dwell_ms,
);
}
if let Some(session) = &options.session {
app.open_session(session);
app.dispatch_and_run(AppCommand::RefreshLogSessions, options.dwell_ms.min(1_000));
}
if let Some(instance) = &options.launch {
app.dispatch_and_run(
AppCommand::LaunchInstance(instance.clone()),
options.dwell_ms,
);
}
app.render_screenshot(&options.path)?;
// 启动中间态截完就把进程收掉:截图进程退出后子进程会变孤儿,
// 所以在取图之后显式 stop(kill_tree),不留给系统。
if let Some(instance) = &options.launch {
app.dispatch_and_run(AppCommand::StopInstance(instance.clone()), 1_500);
}
Ok(())
}
/// 截图通道的安装指令:缺省原版,给了 `--screenshot-loader` 就走向导同一条路
/// (`CreateInstance`),因此 Forge/NeoForge 的中间态也能取图。
fn install_command(version: &str, loader: Option<&str>) -> AppCommand {
match loader.map(unlucky_presenter::dto::LoaderKind::parse) {
Some(Some(kind)) => AppCommand::CreateInstance(unlucky_presenter::dto::CreateRequest {
version: version.to_string(),
loader: kind,
loader_version: String::new(),
name: version.to_string(),
}),
_ => AppCommand::InstallVersion(version.to_string()),
}
}
/// `--flag` 是否存在。
pub fn flag(name: &str) -> bool {
std::env::args().skip(1).any(|arg| arg == name)
}
/// `--key value` / `--key=value` 的取值。
pub fn value_of(name: &str) -> Option<String> {
let mut args = std::env::args().skip(1);
while let Some(arg) = args.next() {
if let Some(value) = arg.strip_prefix(&format!("{name}=")) {
return Some(value.to_string());
}
if arg == name {
return args.next();
}
}
None
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn default_dwell_is_a_visible_mid_state() {
const DEFAULT: u64 = ShotOptions::DEFAULT_DWELL_MS;
let dwell = DEFAULT;
assert!(dwell >= 1_000, "中间态至少要停 1 秒才看得见进度");
}
#[test]
fn options_without_screenshot_are_none() {
// 测试进程没有 --screenshot 参数
assert!(
shot_options().is_none() || std::env::args().any(|arg| arg.contains("--screenshot"))
);
}
#[test]
fn value_of_ignores_absent_flags() {
assert!(value_of("--definitely-not-a-real-flag").is_none());
}
}