mirror of
https://github.com/servo/servo.git
synced 2025-10-08 20:49:24 +01:00
6eacb0c995
This commit introduces the `serde` dependency, which we will use to serialize messages going between processes in multiprocess Servo. This also adds a new debugging flag, `-Z print-display-list-json`, allowing the output of display list serialization to be visualized. This will be useful for our experiments with alternate rasterizers.
94 lines
3 KiB
Rust
94 lines
3 KiB
Rust
/* 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 http://mozilla.org/MPL/2.0/. */
|
|
|
|
use core_graphics::data_provider::CGDataProvider;
|
|
use core_graphics::font::CGFont;
|
|
use core_text::font::CTFont;
|
|
use core_text;
|
|
|
|
use serde::de::{Error, Visitor};
|
|
use serde::{Deserialize, Deserializer, Serialize, Serializer};
|
|
use std::borrow::ToOwned;
|
|
use std::ops::Deref;
|
|
use string_cache::Atom;
|
|
|
|
/// Platform specific font representation for mac.
|
|
/// The identifier is a PostScript font name. The
|
|
/// CTFont object is cached here for use by the
|
|
/// paint functions that create CGFont references.
|
|
#[derive(Deserialize, Serialize)]
|
|
pub struct FontTemplateData {
|
|
/// The `CTFont` object, if present. This is cached here so that we don't have to keep creating
|
|
/// `CTFont` instances over and over. It can always be recreated from the `identifier` and/or
|
|
/// `font_data` fields.
|
|
///
|
|
/// When sending a `FontTemplateData` instance across processes, this will be set to `None` on
|
|
/// the other side, because `CTFont` instances cannot be sent across processes. This is
|
|
/// harmless, however, because it can always be recreated.
|
|
pub ctfont: CachedCTFont,
|
|
|
|
pub identifier: Atom,
|
|
pub font_data: Option<Vec<u8>>
|
|
}
|
|
|
|
unsafe impl Send for FontTemplateData {}
|
|
unsafe impl Sync for FontTemplateData {}
|
|
|
|
impl FontTemplateData {
|
|
pub fn new(identifier: Atom, font_data: Option<Vec<u8>>) -> FontTemplateData {
|
|
let ctfont = match font_data {
|
|
Some(ref bytes) => {
|
|
let fontprov = CGDataProvider::from_buffer(bytes);
|
|
let cgfont_result = CGFont::from_data_provider(fontprov);
|
|
match cgfont_result {
|
|
Ok(cgfont) => Some(core_text::font::new_from_CGFont(&cgfont, 0.0)),
|
|
Err(_) => None
|
|
}
|
|
},
|
|
None => {
|
|
Some(core_text::font::new_from_name(identifier.as_slice(), 0.0).unwrap())
|
|
}
|
|
};
|
|
|
|
FontTemplateData {
|
|
ctfont: CachedCTFont(ctfont),
|
|
identifier: identifier.to_owned(),
|
|
font_data: font_data
|
|
}
|
|
}
|
|
}
|
|
|
|
pub struct CachedCTFont(Option<CTFont>);
|
|
|
|
impl Deref for CachedCTFont {
|
|
type Target = Option<CTFont>;
|
|
fn deref(&self) -> &Option<CTFont> {
|
|
&self.0
|
|
}
|
|
}
|
|
|
|
impl Serialize for CachedCTFont {
|
|
fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> where S: Serializer {
|
|
serializer.visit_none()
|
|
}
|
|
}
|
|
|
|
impl Deserialize for CachedCTFont {
|
|
fn deserialize<D>(deserializer: &mut D) -> Result<CachedCTFont, D::Error>
|
|
where D: Deserializer {
|
|
struct NoneOptionVisitor;
|
|
|
|
impl Visitor for NoneOptionVisitor {
|
|
type Value = CachedCTFont;
|
|
|
|
#[inline]
|
|
fn visit_none<E>(&mut self) -> Result<CachedCTFont,E> where E: Error {
|
|
Ok(CachedCTFont(None))
|
|
}
|
|
}
|
|
|
|
deserializer.visit_option(NoneOptionVisitor)
|
|
}
|
|
}
|
|
|