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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use gfx::font_cache_thread::FontCacheThread;
use gfx::font_context::FontContext;
use msg::constellation_msg::PipelineId;
use std::cell::RefCell;
use std::sync::Mutex;
use style::context::SharedStyleContext;
pub struct LayoutContext<'a> {
pub id: PipelineId,
pub use_rayon: bool,
pub style_context: SharedStyleContext<'a>,
pub font_cache_thread: Mutex<FontCacheThread>,
}
impl<'a> LayoutContext<'a> {
#[inline(always)]
pub fn shared_context(&self) -> &SharedStyleContext {
&self.style_context
}
}
pub(crate) type LayoutFontContext = FontContext<FontCacheThread>;
thread_local!(static FONT_CONTEXT: RefCell<Option<LayoutFontContext>> = RefCell::new(None));
pub(crate) fn with_thread_local_font_context<F, R>(layout_context: &LayoutContext, f: F) -> R
where
F: FnOnce(&mut LayoutFontContext) -> R,
{
FONT_CONTEXT.with(|font_context| {
f(font_context.borrow_mut().get_or_insert_with(|| {
FontContext::new(layout_context.font_cache_thread.lock().unwrap().clone())
}))
})
}
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