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|
use std::fmt;
use font::Size;
use log::error;
use serde::de::Visitor;
use serde::{Deserialize, Deserializer};
use alacritty_terminal::config::{failure_default, LOG_TARGET_CONFIG};
#[cfg(target_os = "macos")]
use crate::config::ui_config::DefaultTrueBool;
use crate::config::ui_config::Delta;
/// Font config.
///
/// Defaults are provided at the level of this struct per platform, but not per
/// field in this struct. It might be nice in the future to have defaults for
/// each value independently. Alternatively, maybe erroring when the user
/// doesn't provide complete config is Ok.
#[serde(default)]
#[derive(Debug, Deserialize, Clone, PartialEq, Eq)]
pub struct Font {
/// Normal font face.
#[serde(deserialize_with = "failure_default")]
normal: FontDescription,
/// Bold font face.
#[serde(deserialize_with = "failure_default")]
bold: SecondaryFontDescription,
/// Italic font face.
#[serde(deserialize_with = "failure_default")]
italic: SecondaryFontDescription,
/// Bold italic font face.
#[serde(deserialize_with = "failure_default")]
bold_italic: SecondaryFontDescription,
/// Font size in points.
#[serde(deserialize_with = "DeserializeSize::deserialize")]
pub size: Size,
/// Extra spacing per character.
#[serde(deserialize_with = "failure_default")]
pub offset: Delta<i8>,
/// Glyph offset within character cell.
#[serde(deserialize_with = "failure_default")]
pub glyph_offset: Delta<i8>,
#[cfg(target_os = "macos")]
#[serde(deserialize_with = "failure_default")]
use_thin_strokes: DefaultTrueBool,
}
impl Default for Font {
fn default() -> Font {
Font {
size: default_font_size(),
normal: Default::default(),
bold: Default::default(),
italic: Default::default(),
bold_italic: Default::default(),
glyph_offset: Default::default(),
offset: Default::default(),
#[cfg(target_os = "macos")]
use_thin_strokes: Default::default(),
}
}
}
impl Font {
/// Get a font clone with a size modification.
pub fn with_size(self, size: Size) -> Font {
Font { size, ..self }
}
/// Get normal font description.
pub fn normal(&self) -> &FontDescription {
&self.normal
}
/// Get bold font description.
pub fn bold(&self) -> FontDescription {
self.bold.desc(&self.normal)
}
/// Get italic font description.
pub fn italic(&self) -> FontDescription {
self.italic.desc(&self.normal)
}
/// Get bold italic font description.
pub fn bold_italic(&self) -> FontDescription {
self.bold_italic.desc(&self.normal)
}
#[cfg(target_os = "macos")]
pub fn use_thin_strokes(&self) -> bool {
self.use_thin_strokes.0
}
#[cfg(not(target_os = "macos"))]
pub fn use_thin_strokes(&self) -> bool {
false
}
}
fn default_font_size() -> Size {
Size::new(11.)
}
/// Description of the normal font.
#[serde(default)]
#[derive(Debug, Deserialize, Clone, PartialEq, Eq)]
pub struct FontDescription {
#[serde(deserialize_with = "failure_default")]
pub family: String,
#[serde(deserialize_with = "failure_default")]
pub style: Option<String>,
}
impl Default for FontDescription {
fn default() -> FontDescription {
FontDescription {
#[cfg(not(any(target_os = "macos", windows)))]
family: "monospace".into(),
#[cfg(target_os = "macos")]
family: "Menlo".into(),
#[cfg(windows)]
family: "Consolas".into(),
style: None,
}
}
}
/// Description of the italic and bold font.
#[serde(default)]
#[derive(Debug, Default, Deserialize, Clone, PartialEq, Eq)]
pub struct SecondaryFontDescription {
#[serde(deserialize_with = "failure_default")]
family: Option<String>,
#[serde(deserialize_with = "failure_default")]
style: Option<String>,
}
impl SecondaryFontDescription {
pub fn desc(&self, fallback: &FontDescription) -> FontDescription {
FontDescription {
family: self.family.clone().unwrap_or_else(|| fallback.family.clone()),
style: self.style.clone(),
}
}
}
trait DeserializeSize: Sized {
fn deserialize<'a, D>(_: D) -> ::std::result::Result<Self, D::Error>
where
D: serde::de::Deserializer<'a>;
}
impl DeserializeSize for Size {
fn deserialize<'a, D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
where
D: serde::de::Deserializer<'a>,
{
use std::marker::PhantomData;
struct NumVisitor<__D> {
_marker: PhantomData<__D>,
}
impl<'a, __D> Visitor<'a> for NumVisitor<__D>
where
__D: serde::de::Deserializer<'a>,
{
type Value = f64;
fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str("f64 or u64")
}
fn visit_f64<E>(self, value: f64) -> ::std::result::Result<Self::Value, E>
where
E: ::serde::de::Error,
{
Ok(value)
}
fn visit_u64<E>(self, value: u64) -> ::std::result::Result<Self::Value, E>
where
E: ::serde::de::Error,
{
Ok(value as f64)
}
}
let value = serde_yaml::Value::deserialize(deserializer)?;
let size = value
.deserialize_any(NumVisitor::<D> { _marker: PhantomData })
.map(|v| Size::new(v as _));
// Use default font size as fallback.
match size {
Ok(size) => Ok(size),
Err(err) => {
let size = default_font_size();
error!(
target: LOG_TARGET_CONFIG,
"Problem with config: {}; using size {}",
err,
size.as_f32_pts()
);
Ok(size)
},
}
}
}
|
