INNER CODE UNIT · Rust

render_pdf_page

abenz1267/walker · src/preview/mod.rs:377

    fn render_pdf_page(&self, page: &Page) -> Result<GtkBox, Box<dyn std::error::Error>> {
        let page_container = GtkBox::new(Orientation::Vertical, 5);
        page_container.set_halign(gtk4::Align::Fill);
        page_container.set_hexpand(true);

        let (width, height) = page.size();

        let target_width = 800.0;
        let display_scale = target_width / width;

        let render_scale = (display_scale * 1.5).min(2.0);
        let render_width = ((width * render_scale) as i32).min(1600);
        let render_height = ((height * render_scale) as i32).min(2400);

        let estimated_size = (render_width * render_height * 4) as usize;
        if estimated_size > 10 * 1024 * 1024 {
            return Err("PDF page too large for preview".into());
        }

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