130 lines
4.0 KiB
Rust
130 lines
4.0 KiB
Rust
/*
|
|
* Copyright (C) 2000 Red Hat, Inc.
|
|
* Copyright (C) 2019 Purism, SPC
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.Free
|
|
*/
|
|
|
|
/*! CSS data loading. */
|
|
|
|
use std::env;
|
|
use ::logging;
|
|
|
|
use glib::object::ObjectExt;
|
|
use logging::Warn;
|
|
|
|
/// Gathers stuff defined in C or called by C
|
|
pub mod c {
|
|
use super::*;
|
|
use gio;
|
|
use gtk;
|
|
use gtk_sys;
|
|
|
|
use gtk::CssProviderExt;
|
|
use glib::translate::ToGlibPtr;
|
|
|
|
/// Loads the layout style based on current theme
|
|
/// without having to worry about string allocation
|
|
#[no_mangle]
|
|
pub extern "C"
|
|
fn squeek_load_style() -> *const gtk_sys::GtkCssProvider {
|
|
unsafe { gtk::set_initialized() };
|
|
let theme = gtk::Settings::get_default()
|
|
.map(|settings| get_theme_name(&settings));
|
|
|
|
let css_name = path_from_theme(theme);
|
|
|
|
let resource_name = if gio::resources_get_info(
|
|
&css_name,
|
|
gio::ResourceLookupFlags::NONE
|
|
).is_ok() {
|
|
css_name
|
|
} else { // use default if this path doesn't exist
|
|
path_from_theme(None)
|
|
};
|
|
|
|
let provider = gtk::CssProvider::new();
|
|
provider.load_from_resource(&resource_name);
|
|
provider.to_glib_full()
|
|
}
|
|
}
|
|
|
|
// not Adwaita, but rather fall back to default
|
|
const DEFAULT_THEME_NAME: &str = "";
|
|
|
|
struct GtkTheme {
|
|
name: String,
|
|
variant: Option<String>,
|
|
}
|
|
|
|
/// Gets theme as determined by the toolkit
|
|
/// Ported from GTK's gtksettings.c
|
|
fn get_theme_name(settings: >k::Settings) -> GtkTheme {
|
|
let env_theme = env::var("GTK_THEME")
|
|
.map(|theme| {
|
|
let mut parts = theme.splitn(2, ":");
|
|
GtkTheme {
|
|
// guaranteed at least empty string
|
|
// as the first result from splitting a string
|
|
name: parts.next().unwrap().into(),
|
|
variant: parts.next().map(String::from)
|
|
}
|
|
})
|
|
.map_err(|e| {
|
|
match &e {
|
|
env::VarError::NotPresent => {},
|
|
// maybe TODO: forward this warning?
|
|
e => log_print!(
|
|
logging::Level::Surprise,
|
|
"GTK_THEME variable invalid: {}", e,
|
|
),
|
|
};
|
|
e
|
|
}).ok();
|
|
|
|
match env_theme {
|
|
Some(theme) => theme,
|
|
None => GtkTheme {
|
|
name: {
|
|
settings.get_property("gtk-theme-name")
|
|
.or_print(logging::Problem::Surprise, "No theme name")
|
|
.and_then(|value| value.get::<String>())
|
|
.unwrap_or(DEFAULT_THEME_NAME.into())
|
|
},
|
|
variant: {
|
|
settings.get_property("gtk-application-prefer-dark-theme")
|
|
.or_print(logging::Problem::Surprise, "No settings key")
|
|
.and_then(|value| value.get::<bool>())
|
|
.and_then(|dark_preferred| match dark_preferred {
|
|
true => Some("dark".into()),
|
|
false => None,
|
|
})
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
fn path_from_theme(theme: Option<GtkTheme>) -> String {
|
|
format!(
|
|
"/sm/puri/squeekboard/style{}.css",
|
|
match theme {
|
|
Some(GtkTheme { name, variant: Some(variant) }) => {
|
|
format!("-{}:{}", name, variant)
|
|
},
|
|
Some(GtkTheme { name, variant: None }) => format!("-{}", name),
|
|
None => "".into(),
|
|
}
|
|
)
|
|
}
|