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use core::{
assets::{
asset::{Asset, AssetId},
protocol::{AssetLoadResult, AssetProtocol, AssetVariant, Meta},
},
Ignite, Scalar,
};
use serde::{Deserialize, Serialize};
use std::{any::Any, str::from_utf8};
#[derive(Ignite, Debug, Clone, Serialize, Deserialize)]
pub struct FontFace {
pub font: String,
#[serde(default)]
pub style: Option<String>,
#[serde(default = "FontFace::default_weight")]
pub weight: Scalar,
#[serde(default = "FontFace::default_stretch")]
pub stretch: Scalar,
#[serde(default)]
pub variant: Option<String>,
}
impl FontFace {
fn default_weight() -> Scalar {
400.0
}
fn default_stretch() -> Scalar {
100.0
}
}
pub struct FontFaceAsset {
face: FontFace,
font_asset: AssetId,
}
impl FontFaceAsset {
pub fn face(&self) -> &FontFace {
&self.face
}
pub fn font_asset(&self) -> AssetId {
self.font_asset
}
}
pub struct FontFaceAssetProtocol;
impl AssetProtocol for FontFaceAssetProtocol {
fn name(&self) -> &str {
"fontface"
}
fn on_load(&mut self, data: Vec<u8>) -> AssetLoadResult {
let data = from_utf8(&data).unwrap();
let face: FontFace = serde_json::from_str(data).unwrap();
let font = face.font.clone();
AssetLoadResult::Yield(Some(Box::new(face)), vec![("font".to_owned(), font)])
}
fn on_resume(&mut self, payload: Meta, list: &[(&str, &Asset)]) -> AssetLoadResult {
let face = *(payload.unwrap() as Box<dyn Any + Send>)
.downcast::<FontFace>()
.unwrap();
let font_asset = list
.get(0)
.expect("Could not obtain font face font asset")
.1
.id();
AssetLoadResult::Data(Box::new(FontFaceAsset { face, font_asset }))
}
fn on_unload(&mut self, asset: &Asset) -> Option<Vec<AssetVariant>> {
asset
.get::<FontFaceAsset>()
.map(|asset| vec![AssetVariant::Id(asset.font_asset)])
}
}