63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
use cairo;
|
|
use rsvg;
|
|
|
|
use std::fs::File;
|
|
use std::io::BufWriter;
|
|
use std::process;
|
|
|
|
fn main() {
|
|
let args = std::env::args_os();
|
|
|
|
if args.len() != 5 {
|
|
eprintln!("usage: render <input.svg> <width> <height> <output.png>");
|
|
process::exit(1);
|
|
}
|
|
|
|
let mut args = args.skip(1);
|
|
|
|
let input = args.next().unwrap();
|
|
let width_os = args.next().unwrap();
|
|
let height_os = args.next().unwrap();
|
|
let output = args.next().unwrap();
|
|
|
|
let width_s = width_os.to_str().unwrap();
|
|
let height_s = height_os.to_str().unwrap();
|
|
|
|
let width: i32 = width_s.parse().unwrap();
|
|
let height: i32 = height_s.parse().unwrap();
|
|
|
|
assert!(width > 0 && height > 0);
|
|
|
|
let handle = match rsvg::Loader::new().read_path(input) {
|
|
Ok(handle) => handle,
|
|
|
|
Err(e) => {
|
|
eprintln!("loading error: {}", e);
|
|
process::exit(1);
|
|
}
|
|
};
|
|
|
|
let renderer = rsvg::CairoRenderer::new(&handle);
|
|
|
|
let surface = cairo::ImageSurface::create(cairo::Format::ARgb32, width, height).unwrap();
|
|
let cr = cairo::Context::new(&surface).expect("Failed to create a cairo context");
|
|
|
|
let res = renderer.render_document(
|
|
&cr,
|
|
&cairo::Rectangle::new(0.0, 0.0, f64::from(width), f64::from(height)),
|
|
);
|
|
|
|
match res {
|
|
Ok(()) => {
|
|
let mut file = BufWriter::new(File::create(output).unwrap());
|
|
|
|
surface.write_to_png(&mut file).unwrap();
|
|
}
|
|
|
|
Err(e) => {
|
|
eprintln!("rendering error: {}", e);
|
|
process::exit(1);
|
|
}
|
|
}
|
|
}
|