#![cfg(feature = "svg")]
fn with_svg_options<T>(callback: impl FnOnce(usvg::OptionsRef<'_>) -> T) -> T {
crate::fonts::FONT_CACHE.with(|cache| {
let options = usvg::Options::default();
let mut options_ref = options.to_ref();
let cache = cache.borrow();
options_ref.fontdb = &cache.available_fonts;
callback(options_ref)
})
}
#[cfg(not(target_arch = "wasm32"))]
pub fn load_from_path(path: &std::path::Path) -> Result<usvg::Tree, std::io::Error> {
let svg_data = std::fs::read(path)?;
with_svg_options(|options| {
usvg::Tree::from_data(&svg_data, &options)
.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))
})
}
pub fn load_from_data(slice: &[u8]) -> Result<usvg::Tree, usvg::Error> {
with_svg_options(|options| usvg::Tree::from_data(slice, &options))
}
pub fn render(
tree: &usvg::Tree,
size: euclid::default::Size2D<u32>,
) -> Result<image::DynamicImage, usvg::Error> {
let fit = usvg::FitTo::Width(size.width);
let size = fit.fit_to(tree.svg_node().size.to_screen_size()).ok_or(usvg::Error::InvalidSize)?;
let mut buffer =
vec![0u8; size.width() as usize * size.height() as usize * tiny_skia::BYTES_PER_PIXEL];
let skia_buffer =
tiny_skia::PixmapMut::from_bytes(buffer.as_mut_slice(), size.width(), size.height())
.ok_or(usvg::Error::InvalidSize)?;
resvg::render(tree, fit, skia_buffer).ok_or(usvg::Error::InvalidSize)?;
Ok(image::DynamicImage::ImageRgba8(
image::RgbaImage::from_raw(size.width(), size.height(), buffer)
.ok_or(usvg::Error::InvalidSize)?,
))
}