ZacharyZhang-NY
b7fca0146d
ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git), ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.
95 lines
3.1 KiB
Rust
95 lines
3.1 KiB
Rust
use crate::{env, settings::Motion};
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/// `ELY_REDUCE_MOTION` wins, then the setting, then the OS.
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pub fn reduce_motion(setting: Motion) -> bool {
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let (env, system) = (env::flag("ELY_REDUCE_MOTION"), os_reduce_motion());
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if env.is_none() && setting == Motion::System && system.is_none() {
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log::info!("accessibility: no reduce-motion setting found, using full motion");
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}
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reduce_motion_from(env, setting, system)
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}
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fn reduce_motion_from(env: Option<bool>, setting: Motion, system: Option<bool>) -> bool {
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let set = match setting {
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Motion::System => None,
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Motion::Reduced => Some(true),
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Motion::Full => Some(false),
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};
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env.or(set).or(system).unwrap_or(false)
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}
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#[cfg(target_os = "macos")]
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fn os_reduce_motion() -> Option<bool> {
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Some(objc2_app_kit::NSWorkspace::sharedWorkspace().accessibilityDisplayShouldReduceMotion())
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}
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#[cfg(target_os = "linux")]
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fn os_reduce_motion() -> Option<bool> {
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let output = std::process::Command::new("gsettings")
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.args(["get", "org.gnome.desktop.interface", "enable-animations"])
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.output()
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.map_err(|error| log::debug!("accessibility: gsettings did not run: {error}"))
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.ok()?;
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if !output.status.success() {
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log::debug!("accessibility: gsettings has no enable-animations key");
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return None;
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}
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animations_enabled(&String::from_utf8_lossy(&output.stdout)).map(|enabled| !enabled)
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}
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#[cfg(windows)]
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fn os_reduce_motion() -> Option<bool> {
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use windows_sys::Win32::UI::WindowsAndMessaging::{
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SPI_GETCLIENTAREAANIMATION, SystemParametersInfoW,
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};
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let mut enabled: i32 = 1;
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// SAFETY: a live i32, the size the call expects.
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let read = unsafe {
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SystemParametersInfoW(
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SPI_GETCLIENTAREAANIMATION,
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0,
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(&mut enabled as *mut i32).cast(),
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0,
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)
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};
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(read != 0).then_some(enabled == 0)
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}
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#[cfg(not(any(target_os = "macos", target_os = "linux", windows)))]
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fn os_reduce_motion() -> Option<bool> {
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None
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}
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#[cfg(any(target_os = "linux", test))]
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fn animations_enabled(gsettings: &str) -> Option<bool> {
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match gsettings.trim() {
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"true" => Some(true),
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"false" => Some(false),
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_ => None,
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}
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}
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#[cfg(test)]
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mod tests {
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use super::{Motion, animations_enabled, reduce_motion_from};
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#[test]
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fn the_env_wins_then_the_setting_then_the_os_then_full_motion() {
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assert!(reduce_motion_from(Some(true), Motion::Full, Some(false)));
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assert!(!reduce_motion_from(Some(false), Motion::Reduced, Some(true)));
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assert!(reduce_motion_from(None, Motion::Reduced, Some(false)));
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assert!(!reduce_motion_from(None, Motion::Full, Some(true)));
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assert!(reduce_motion_from(None, Motion::System, Some(true)));
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assert!(!reduce_motion_from(None, Motion::System, None));
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}
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#[test]
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fn gsettings_answers_parse_and_anything_else_is_no_answer() {
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assert_eq!(animations_enabled("true\n"), Some(true));
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assert_eq!(animations_enabled("false\n"), Some(false));
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assert_eq!(animations_enabled("uint32 7\n"), None);
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assert_eq!(animations_enabled(""), None);
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}
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}
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