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fix: fall back to legacy X11 names when loading pointer themes

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Smithay requests modern shape-v1 names while themes like DMZ-White
only provide legacy X11 aliases. Try known aliases before failing to load.
This commit is contained in:
maskedsyntax 2026-07-06 08:43:27 +05:30 • committed by Jacob Kauffmann
parent 373a44d431
commit 067be10474
1 changed files with 48 additions and 9 deletions
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57
src/backend/render/cursor.rs
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@ -114,18 +114,57 @@ enum Error {
NoDefaultCursor,
#[error("Error opening xcursor file: {0}")]
File(#[from] std::io::Error),
#[error("Failed to parse XCursor file")]
Parse,
}
fn cursor_aliases(name: &str) -> &[&str] {
match name {
"default" => &["default", "left_ptr", "arrow"],
"pointer" => &["pointer", "hand2", "hand"],
"text" => &["text", "xterm"],
"wait" => &["wait", "watch"],
"progress" => &["progress", "left_ptr_watch"],
"ew-resize" => &["ew-resize", "h_double_arrow", "sb_h_double_arrow"],
"ns-resize" => &["ns-resize", "v_double_arrow", "sb_v_double_arrow"],
"nw-resize" => &["nw-resize", "top_left_corner"],
"ne-resize" => &["ne-resize", "top_right_corner"],
"sw-resize" => &["sw-resize", "bottom_left_corner"],
"se-resize" => &["se-resize", "bottom_right_corner"],
"w-resize" => &["w-resize", "left_side"],
"e-resize" => &["e-resize", "right_side"],
"n-resize" => &["n-resize", "top_side"],
"s-resize" => &["s-resize", "bottom_side"],
"move" => &["move", "fleur"],
"not-allowed" => &["not-allowed", "crossed_circle"],
"crosshair" => &["crosshair", "cross"],
"help" => &["help", "question_arrow", "left_ptr_help"],
_ => &[],
}
}
fn load_icon(theme: &CursorTheme, shape: CursorIcon) -> Result<Vec<Image>, Error> {
let icon_path = theme
.load_icon(&shape.to_string())
.ok_or(Error::NoDefaultCursor)?;
let mut cursor_file = std::fs::File::open(&icon_path)?;
let mut cursor_data = Vec::new();
cursor_file.read_to_end(&mut cursor_data)?;
parse_xcursor(&cursor_data).ok_or(Error::Parse)
let shape_name = shape.to_string();
for name in cursor_aliases(&shape_name)
.iter()
.copied()
.chain(std::iter::once(shape_name.as_str()))
{
if let Some(icon_path) = theme.load_icon(name) {
let mut cursor_file = std::fs::File::open(&icon_path)?;
let mut cursor_data = Vec::new();
cursor_file.read_to_end(&mut cursor_data)?;
if let Some(images) = parse_xcursor(&cursor_data) {
return Ok(images);
}
}
}
Err(Error::NoDefaultCursor)
}
render_elements! {