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mod.rs
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mod.rs
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// SPDX-License-Identifier: GPL-3.0-only
// Copyright © 2021 System76
use crate::*;
use freedesktop_desktop_entry as fde;
use freedesktop_desktop_entry::DesktopEntry;
use futures::StreamExt;
use pop_launcher::*;
use std::borrow::Cow;
use tokio::io::AsyncWrite;
use utils::get_description;
pub(crate) mod utils;
pub async fn main() {
let mut app = App::new(async_stdout());
app.reload().await;
let mut requests = json_input_stream(async_stdin());
while let Some(result) = requests.next().await {
match result {
Ok(request) => match request {
Request::Activate(id) => app.activate(id).await,
Request::ActivateContext { id, context } => app.activate_context(id, context).await,
Request::Context(id) => app.context(id).await,
Request::Search(query) => app.search(&query).await,
Request::Exit => break,
_ => (),
},
Err(why) => {
tracing::error!("malformed JSON request: {}", why);
}
}
}
}
/// Desktop entries to hard exclude.
const EXCLUSIONS: &[&str] = &["GNOME Shell", "Initial Setup"];
struct App<W> {
current_desktop: Option<Vec<String>>,
is_desktop_cosmic: bool,
desktop_entries: Vec<DesktopEntry<'static>>,
locales: Vec<String>,
tx: W,
gpus: Option<Vec<switcheroo_control::Gpu>>,
}
impl<W: AsyncWrite + Unpin> App<W> {
fn new(tx: W) -> Self {
let current_desktop = fde::current_desktop();
Self {
current_desktop: fde::current_desktop(),
is_desktop_cosmic: current_desktop
.unwrap_or_default()
.iter()
.any(|e| e == "cosmic"),
desktop_entries: Vec::new(),
locales: fde::get_languages_from_env(),
tx,
gpus: None,
}
}
async fn reload(&mut self) {
self.desktop_entries.clear();
let mut deduplicator = std::collections::HashSet::new();
let locales = fde::get_languages_from_env();
let paths = fde::Iter::new(fde::default_paths());
let desktop_entries = DesktopEntry::from_paths(paths, &locales)
.filter_map(|de| {
de.ok().and_then(|de| {
if deduplicator.contains(de.appid.as_ref()) {
return None;
}
if de.name(&self.locales).is_none() {
return None;
}
match de.exec() {
Some(exec) => match exec.split_ascii_whitespace().next() {
Some(exec) => {
if exec == "false" {
return None;
}
}
None => return None,
},
None => return None,
}
// Avoid showing the GNOME Shell entry entirely
if de
.name(&[] as &[&str])
.map_or(false, |v| EXCLUSIONS.contains(&v.as_ref()))
{
return None;
}
// Do not show if our desktop is defined in `NotShowIn`.
if let Some(not_show_in) = de.not_show_in() {
if let Some(current_desktop) = &self.current_desktop {
if not_show_in.iter().any(|not_show| {
current_desktop
.iter()
.any(|desktop| ¬_show.to_ascii_lowercase() == desktop)
}) {
return None;
}
}
}
// Do not show if our desktop is not defined in `OnlyShowIn`.
if let Some(only_show_in) = de.only_show_in() {
if let Some(current_desktop) = &self.current_desktop {
if !only_show_in.iter().any(|show_in| {
current_desktop
.iter()
.any(|desktop| &show_in.to_ascii_lowercase() == desktop)
}) {
return None;
}
}
} else {
if de.no_display() {
return None;
}
}
deduplicator.insert(de.appid.to_string());
Some(de)
})
})
.collect::<Vec<_>>();
self.desktop_entries = desktop_entries;
self.gpus = try_get_gpus().await;
}
async fn activate(&mut self, id: u32) {
if let Some(entry) = self.desktop_entries.get(id as usize) {
let response = PluginResponse::DesktopEntry {
path: entry.path.to_path_buf(),
gpu_preference: if entry.prefers_non_default_gpu() {
GpuPreference::NonDefault
} else {
GpuPreference::Default
},
action_name: None,
};
send(&mut self.tx, response).await;
}
}
async fn activate_context(&mut self, id: u32, context: u32) {
if let Some(entry) = self.desktop_entries.get(id as usize) {
let gpu_len = self.gpus.as_ref().map(Vec::len).unwrap_or(0) as u32;
let gpu_preference = if self.is_desktop_cosmic {
if context < gpu_len {
GpuPreference::SpecificIdx(context)
} else if entry.prefers_non_default_gpu() {
GpuPreference::NonDefault
} else {
GpuPreference::Default
}
} else if !entry.prefers_non_default_gpu() {
GpuPreference::NonDefault
} else {
GpuPreference::Default
};
let response = PluginResponse::DesktopEntry {
path: entry.path.to_path_buf(),
gpu_preference,
action_name: (self.is_desktop_cosmic && context >= gpu_len).then(|| {
entry.actions().unwrap_or_default()[(context - gpu_len) as usize].to_string()
}),
};
send(&mut self.tx, response).await;
}
}
async fn context(&mut self, id: u32) {
if let Some(entry) = self.desktop_entries.get(id as usize) {
let options = if self.is_desktop_cosmic {
self.cosmic_context(entry).await
} else {
self.gnome_context(entry).await
};
if !options.is_empty() {
let response = PluginResponse::Context { id, options };
send(&mut self.tx, response).await;
}
}
}
async fn search(&mut self, query: &str) {
for (id, entry) in self.desktop_entries.iter().enumerate() {
let score = fde::matching::get_entry_score(query, entry, &self.locales, &[]);
if score > 0.6 {
let response = PluginResponse::Append(PluginSearchResult {
id: id as u32,
name: entry.name(&self.locales).unwrap_or_default().to_string(),
description: get_description(entry, &self.locales),
keywords: entry
.keywords(&self.locales)
.map(|v| v.iter().map(|e| e.to_string()).collect()),
icon: entry
.icon()
.map(|e| Cow::Owned(e.to_string()))
.map(IconSource::Name),
exec: entry.exec().map(|e| e.to_string()),
..Default::default()
});
send(&mut self.tx, response).await;
}
}
send(&mut self.tx, PluginResponse::Finished).await;
}
async fn gnome_context(&self, entry: &DesktopEntry<'_>) -> Vec<ContextOption> {
if self.gpus.is_some() {
vec![ContextOption {
id: 0,
name: (if entry.prefers_non_default_gpu() {
"Launch Using Integrated Graphics Card"
} else {
"Launch Using Discrete Graphics Card"
})
.to_owned(),
}]
} else {
Vec::new()
}
}
async fn cosmic_context(&self, entry: &DesktopEntry<'_>) -> Vec<ContextOption> {
let mut options = Vec::new();
if let Some(gpus) = self.gpus.as_ref() {
let default_idx = if entry.prefers_non_default_gpu() {
gpus.iter().position(|gpu| !gpu.default).unwrap_or(0)
} else {
gpus.iter().position(|gpu| gpu.default).unwrap_or(0)
};
for (i, gpu) in gpus.iter().enumerate() {
options.push(ContextOption {
id: i as u32,
name: format!(
"Launch using {}{}",
gpu.name,
if i == default_idx { " (default)" } else { "" }
),
});
}
}
let options_offset = self.gpus.as_ref().map(|gpus| gpus.len()).unwrap_or(0);
for (i, action) in entry.actions().unwrap_or_default().iter().enumerate() {
options.push(ContextOption {
id: (i + options_offset) as u32,
name: action.to_string(),
});
}
options
}
}
async fn try_get_gpus() -> Option<Vec<switcheroo_control::Gpu>> {
let connection = zbus::Connection::system().await.ok()?;
let proxy = switcheroo_control::SwitcherooControlProxy::new(&connection)
.await
.ok()?;
if !proxy.has_dual_gpu().await.ok()? {
return None;
}
let gpus = proxy.get_gpus().await.ok()?;
if gpus.is_empty() {
return None;
}
Some(gpus)
}