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feat: configure qt5ct and qt6ct

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This commit is contained in:
Adil Hanney 2026-02-11 00:18:56 +00:00
parent 7ba564795a
commit 3b1452d354
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4 changed files with 145 additions and 27 deletions
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1
cosmic-theme/Cargo.toml
View file

@ -29,3 +29,4 @@ cosmic-config = { path = "../cosmic-config/", default-features = false, features
] }
dirs.workspace = true
thiserror = "2.0.16"
configparser = "3.1.0"

8
cosmic-theme/src/output/mod.rs
View file

@ -6,6 +6,8 @@ use crate::Theme;
/// Module for outputting the Cosmic gtk4 theme type as CSS
pub mod gtk4_output;
/// Module for configuring qt5ct and qt6ct to use our qt theme
pub mod qt56ct_output;
/// Module for outputting the Cosmic qt theme type as kdeglobals
pub mod qt_output;
@ -21,6 +23,8 @@ pub enum OutputError {
MissingDataDir,
#[error("Serde Error: {0}")]
Serde(#[from] serde_json::Error),
#[error("Ini Error: {0}")]
Ini(String),
}
impl Theme {
@ -28,9 +32,11 @@ impl Theme {
pub fn apply_exports(&self) -> Result<(), OutputError> {
let gtk_res = Theme::apply_gtk(self.is_dark);
let qt_res = Theme::apply_qt(self.is_dark);
let qt56ct_res = Theme::apply_qt56ct(self.is_dark);
let vs_res = self.clone().apply_vs_code();
gtk_res?;
qt_res?;
qt56ct_res?;
vs_res?;
Ok(())
}
@ -41,8 +47,10 @@ impl Theme {
pub fn apply_exports_static(is_dark: bool) -> Result<(), OutputError> {
let gtk_res = Theme::apply_gtk(is_dark);
let qt_res = Theme::apply_qt(is_dark);
let qt56ct_res = Theme::apply_qt56ct(is_dark);
gtk_res?;
qt_res?;
qt56ct_res?;
Ok(())
}

113
cosmic-theme/src/output/qt56ct_output.rs Normal file
View file

@ -0,0 +1,113 @@
use crate::Theme;
use configparser::ini::Ini;
use std::{
fs::{self, File},
path::PathBuf,
};
use super::OutputError;
impl Theme {
/// The "version" of this theme.
///
/// To avoid repeatedly overwriting the user's config, we use a version system.
///
/// Increment this value when changes to qt{5,6}ct.conf are needed.
/// If the config's version is outdated, we update several sections.
/// Otherwise, only the light/dark mode is updated.
const COSMIC_QT_VERSION: u64 = 1;
/// Edits qt{5,6}ct.conf to use COSMIC styles if needed.
#[cold]
pub fn apply_qt56ct(is_dark: bool) -> Result<(), OutputError> {
let qt5ct_res = Self::apply_ct("qt5ct", is_dark);
let qt6ct_res = Self::apply_ct("qt6ct", is_dark);
qt5ct_res?;
qt6ct_res?;
Ok(())
}
#[must_use]
#[cold]
fn apply_ct(ct: &str, is_dark: bool) -> Result<(), OutputError> {
let path = Self::get_conf_path(ct)?;
let file_content = fs::read_to_string(&path).map_err(OutputError::Io)?;
let mut ini = Ini::new_cs();
ini.read(file_content).map_err(OutputError::Ini)?;
let old_version = ini
.getuint("Appearance", "cosmic_qt_version")
.map_err(OutputError::Ini)?
.unwrap_or_default();
let color_scheme_path = Self::get_qt_colors_path(is_dark)?;
let icon_theme = if is_dark { "breeze-dark" } else { "breeze" };
ini.set(
"Appearance",
"cosmic_qt_version",
Some(Theme::COSMIC_QT_VERSION.to_string()),
);
if old_version < Theme::COSMIC_QT_VERSION {
// Config is outdated, update it unconditionally!
ini.setstr(
"Appearance",
"color_scheme_path",
color_scheme_path.to_str(),
);
// Enable the above color scheme, instead of using the default color scheme of e.g. Breeze
ini.setstr("Appearance", "custom_palette", Some("true"));
// COSMIC icons are stuck in light mode, so use breeze icons instead
ini.setstr("Appearance", "icon_theme", Some(icon_theme));
// Use COSMIC dialogs instead of KDE's
ini.setstr("Appearance", "standard_dialogs", Some("xdgdesktopportal"));
// TODO: Add fonts section to match COSMIC
} else {
// Config is not outdated, check before updating light/dark mode only!
let old_color_scheme_path = ini
.get("Appearance", "color_scheme_path")
.unwrap_or_else(|| "CosmicPlease".to_owned());
if old_color_scheme_path.contains("Cosmic") {
ini.setstr(
"Appearance",
"color_scheme_path",
color_scheme_path.to_str(),
);
}
let old_icon_theme = ini
.get("Appearance", "icon_theme")
.unwrap_or_else(|| "breeze".to_owned());
if old_icon_theme.contains("breeze") {
ini.setstr("Appearance", "icon_theme", Some(icon_theme));
}
}
ini.write(path).map_err(OutputError::Io)?;
Ok(())
}
/// Returns the file paths of the form `~/.config/ct/ct.conf`:
/// e.g. `~/.config/qt6ct/qt6ct.conf`.
///
/// The file and its parent directory are created if they don't exist.
fn get_conf_path(ct: &str) -> Result<PathBuf, OutputError> {
let Some(mut config_dir) = dirs::config_dir() else {
return Err(OutputError::MissingConfigDir);
};
config_dir.push(&ct);
if !config_dir.exists() {
fs::create_dir_all(&config_dir).map_err(OutputError::Io)?;
}
let file_path = config_dir.join(ct.to_owned() + ".conf");
if !file_path.exists() {
File::create_new(&file_path).map_err(OutputError::Io)?;
}
Ok(file_path)
}
}

50
cosmic-theme/src/output/qt_output.rs
View file

@ -125,7 +125,7 @@ impl Theme {
} else {
"COSMIC Light"
};
// COSMIC icons are stuck in light mode, so use breeze instead
// COSMIC icons are stuck in light mode, so use breeze icons instead
let icons_theme = if self.is_dark {
"breeze-dark"
} else {
@ -207,22 +207,7 @@ widgetStyle=qt6ct-style
#[cold]
pub fn write_qt(&self) -> Result<(), OutputError> {
let colors = self.as_qt();
let Some(mut data_dir) = dirs::data_dir() else {
return Err(OutputError::MissingDataDir);
};
let file_name = if self.is_dark {
"CosmicDark.colors"
} else {
"CosmicLight.colors"
};
data_dir.push("color-schemes");
if !data_dir.exists() {
std::fs::create_dir_all(&data_dir).map_err(OutputError::Io)?;
}
let file_path = data_dir.join(file_name);
let file_path = Self::get_qt_colors_path(self.is_dark)?;
let tmp_file_path = file_path.with_extension("colors.new");
// Write to tmp_file_path first, then move it to file_path
@ -251,16 +236,7 @@ widgetStyle=qt6ct-style
let Some(config_dir) = dirs::config_dir() else {
return Err(OutputError::MissingConfigDir);
};
let Some(mut data_dir) = dirs::data_dir() else {
return Err(OutputError::MissingDataDir);
};
data_dir.push("color-schemes");
let src_file = data_dir.join(if is_dark {
"CosmicDark.colors"
} else {
"CosmicLight.colors"
});
let src_file = Self::get_qt_colors_path(is_dark)?;
let kdeglobals_file = config_dir.join("kdeglobals");
@ -304,6 +280,26 @@ widgetStyle=qt6ct-style
Ok(())
}
/// Gets a path like `~/.config/color-schemes/CosmicDark.colors`
pub fn get_qt_colors_path(is_dark: bool) -> Result<PathBuf, OutputError> {
let Some(mut data_dir) = dirs::data_dir() else {
return Err(OutputError::MissingDataDir);
};
let file_name = if is_dark {
"CosmicDark.colors"
} else {
"CosmicLight.colors"
};
data_dir.push("color-schemes");
if !data_dir.exists() {
std::fs::create_dir_all(&data_dir).map_err(OutputError::Io)?;
}
Ok(data_dir.join(file_name))
}
#[cold]
fn backup_non_cosmic_kdeglobals(path: &Path) -> io::Result<()> {
if !Self::is_cosmic_kdeglobals(path)?.unwrap_or(true) {