perf: cache blurred wallpaper to disk to avoid re-blur on startup
First launch with blur blurs and saves to ~/.cache/moonlock/. Subsequent starts load the cached PNG directly. Cache invalidates when wallpaper path, size, mtime, or sigma changes. Adds dirs crate for cache directory resolution.
This commit is contained in:
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de9a3e9e6a
commit
48706e5a29
87
Cargo.lock
generated
87
Cargo.lock
generated
@ -92,6 +92,27 @@ dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "dirs"
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version = "6.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
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dependencies = [
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"dirs-sys",
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]
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[[package]]
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name = "dirs-sys"
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version = "0.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
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dependencies = [
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"libc",
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"option-ext",
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"redox_users",
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"windows-sys",
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]
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[[package]]
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name = "equivalent"
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version = "1.0.2"
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@ -269,6 +290,17 @@ dependencies = [
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"system-deps",
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]
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[[package]]
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name = "getrandom"
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version = "0.2.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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[[package]]
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name = "getrandom"
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version = "0.4.2"
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@ -607,6 +639,15 @@ version = "0.2.183"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
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[[package]]
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name = "libredox"
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version = "0.1.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7ddbf48fd451246b1f8c2610bd3b4ac0cc6e149d89832867093ab69a17194f08"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "linux-raw-sys"
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version = "0.12.1"
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@ -648,6 +689,7 @@ dependencies = [
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name = "moonlock"
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version = "0.5.0"
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dependencies = [
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"dirs",
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"gdk-pixbuf",
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"gdk4",
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"gio",
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@ -703,6 +745,12 @@ version = "1.21.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
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[[package]]
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name = "option-ext"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
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[[package]]
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name = "pango"
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version = "0.22.0"
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@ -801,6 +849,17 @@ version = "6.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
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[[package]]
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name = "redox_users"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
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dependencies = [
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"getrandom 0.2.17",
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"libredox",
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"thiserror",
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]
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[[package]]
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name = "rustc_version"
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version = "0.4.1"
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@ -955,12 +1014,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
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dependencies = [
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"fastrand",
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"getrandom",
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"getrandom 0.4.2",
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"once_cell",
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"rustix",
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"windows-sys",
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]
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[[package]]
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name = "thiserror"
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version = "2.0.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
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dependencies = [
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"thiserror-impl",
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]
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[[package]]
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name = "thiserror-impl"
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version = "2.0.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "toml"
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version = "0.8.23"
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@ -1080,6 +1159,12 @@ version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "03c2856837ef78f57382f06b2b8563a2f512f7185d732608fd9176cb3b8edf0e"
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[[package]]
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name = "wasi"
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version = "0.11.1+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
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[[package]]
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name = "wasip2"
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version = "1.0.2+wasi-0.2.9"
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@ -14,6 +14,7 @@ gdk-pixbuf = "0.22"
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gio = "0.22"
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toml = "0.8"
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serde = { version = "1", features = ["derive"] }
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dirs = "6"
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nix = { version = "0.29", features = ["user"] }
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zeroize = { version = "1", features = ["derive"] }
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libc = "0.2"
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@ -8,8 +8,12 @@ use gtk4::prelude::*;
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use gtk4::{self as gtk, gio};
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use image::imageops;
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use std::cell::RefCell;
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use std::path::Path;
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use std::fs;
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use std::io::Write;
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use std::os::unix::fs::OpenOptionsExt;
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use std::path::{Path, PathBuf};
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use std::rc::Rc;
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use std::time::SystemTime;
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use zeroize::Zeroizing;
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@ -430,11 +434,117 @@ pub fn load_background_texture(bg_path: &Path, blur_radius: Option<f32>) -> gdk:
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};
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match blur_radius {
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Some(sigma) if sigma > 0.0 => apply_blur(&texture, sigma),
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Some(sigma) if sigma > 0.0 => load_blurred_with_cache(bg_path, &texture, sigma),
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_ => texture,
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}
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}
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// -- Blur cache ----------------------------------------------------------------
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const CACHE_PNG: &str = "blur-cache.png";
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const CACHE_META: &str = "blur-cache.meta";
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fn blur_cache_dir() -> Option<PathBuf> {
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dirs::cache_dir().map(|d| d.join("moonlock"))
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}
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/// Build the cache key string for the current wallpaper + sigma.
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fn build_cache_meta(bg_path: &Path, sigma: f32) -> Option<String> {
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if bg_path.starts_with("/dev/moonarch/") {
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let binary = std::env::current_exe().ok()?;
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let binary_mtime = fs::metadata(&binary)
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.ok()?
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.modified()
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.ok()?
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.duration_since(SystemTime::UNIX_EPOCH)
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.ok()?
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.as_secs();
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Some(format!(
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"path={}\nbinary_mtime={}\nsigma={}\n",
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bg_path.display(), binary_mtime, sigma,
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))
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} else {
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let meta = fs::metadata(bg_path).ok()?;
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let mtime = meta
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.modified()
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.ok()?
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.duration_since(SystemTime::UNIX_EPOCH)
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.ok()?
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.as_secs();
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Some(format!(
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"path={}\nsize={}\nmtime={}\nsigma={}\n",
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bg_path.display(), meta.len(), mtime, sigma,
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))
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}
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}
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/// Try to load a cached blurred texture if the cache key matches.
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fn load_cached_blur(cache_dir: &Path, expected_meta: &str) -> Option<gdk::Texture> {
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let stored_meta = fs::read_to_string(cache_dir.join(CACHE_META)).ok()?;
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if stored_meta != expected_meta {
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log::debug!("Blur cache meta mismatch, will re-blur");
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return None;
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}
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let file = gio::File::for_path(cache_dir.join(CACHE_PNG));
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match gdk::Texture::from_file(&file) {
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Ok(texture) => {
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log::debug!("Loaded blurred wallpaper from cache");
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Some(texture)
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}
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Err(e) => {
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log::debug!("Failed to load cached blur PNG: {e}");
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None
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}
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}
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}
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/// Save a blurred texture to the cache directory.
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fn save_blur_cache(cache_dir: &Path, texture: &gdk::Texture, meta: &str) {
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if let Err(e) = save_blur_cache_inner(cache_dir, texture, meta) {
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log::debug!("Failed to save blur cache: {e}");
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}
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}
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fn save_blur_cache_inner(
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cache_dir: &Path,
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texture: &gdk::Texture,
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meta: &str,
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) -> Result<(), Box<dyn std::error::Error>> {
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fs::create_dir_all(cache_dir)?;
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let png_bytes = texture.save_to_png_bytes();
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let mut f = fs::OpenOptions::new()
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.create(true).write(true).truncate(true).mode(0o600)
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.open(cache_dir.join(CACHE_PNG))?;
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f.write_all(&png_bytes)?;
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let mut f = fs::OpenOptions::new()
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.create(true).write(true).truncate(true).mode(0o600)
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.open(cache_dir.join(CACHE_META))?;
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f.write_all(meta.as_bytes())?;
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log::debug!("Saved blur cache to {}", cache_dir.display());
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Ok(())
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}
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/// Load blurred texture, using disk cache when available.
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fn load_blurred_with_cache(bg_path: &Path, texture: &gdk::Texture, sigma: f32) -> gdk::Texture {
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if let Some(cache_dir) = blur_cache_dir() {
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if let Some(meta) = build_cache_meta(bg_path, sigma) {
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if let Some(cached) = load_cached_blur(&cache_dir, &meta) {
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return cached;
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}
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let blurred = apply_blur(texture, sigma);
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save_blur_cache(&cache_dir, &blurred, &meta);
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return blurred;
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}
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}
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apply_blur(texture, sigma)
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}
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// -- Blur implementation -------------------------------------------------------
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/// Apply Gaussian blur to a texture and return a blurred texture.
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fn apply_blur(texture: &gdk::Texture, sigma: f32) -> gdk::Texture {
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let width = texture.width() as u32;
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@ -617,4 +727,60 @@ mod tests {
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fn avatar_size_matches_css() {
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assert_eq!(AVATAR_SIZE, 128);
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}
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// -- Blur cache tests --
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#[test]
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fn build_cache_meta_for_file() {
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let dir = tempfile::tempdir().unwrap();
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let file = dir.path().join("wallpaper.jpg");
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fs::write(&file, b"fake image").unwrap();
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let meta = build_cache_meta(&file, 20.0);
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assert!(meta.is_some());
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let meta = meta.unwrap();
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assert!(meta.contains("path="));
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assert!(meta.contains("size=10"));
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assert!(meta.contains("sigma=20"));
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}
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#[test]
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fn build_cache_meta_for_gresource() {
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let path = Path::new("/dev/moonarch/moonlock/wallpaper.jpg");
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let meta = build_cache_meta(path, 15.0);
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assert!(meta.is_some());
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let meta = meta.unwrap();
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assert!(meta.contains("binary_mtime="));
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assert!(meta.contains("sigma=15"));
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assert!(!meta.contains("size="));
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}
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#[test]
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fn build_cache_meta_missing_file() {
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let meta = build_cache_meta(Path::new("/nonexistent/wallpaper.jpg"), 20.0);
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assert!(meta.is_none());
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}
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#[test]
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fn cache_meta_mismatch_returns_none() {
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let dir = tempfile::tempdir().unwrap();
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fs::write(
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dir.path().join(CACHE_META),
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"path=/old.jpg\nsize=100\nmtime=1\nsigma=20\n",
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).unwrap();
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let result = load_cached_blur(
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dir.path(),
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"path=/new.jpg\nsize=200\nmtime=2\nsigma=20\n",
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);
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assert!(result.is_none());
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}
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#[test]
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fn cache_missing_meta_returns_none() {
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let dir = tempfile::tempdir().unwrap();
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let result = load_cached_blur(
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dir.path(),
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"path=/any.jpg\nsize=1\nmtime=1\nsigma=20\n",
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);
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assert!(result.is_none());
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}
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}
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