broken rendering

src-tauri/Cargo.toml

@@ -14,6 +14,7 @@ edition = "2021"
 name = "pdf_forge_lib"
 crate-type = ["staticlib", "cdylib", "rlib"]
 
+[render]
 [build-dependencies]
 tauri-build = { version = "2", features = [] }
 

src-tauri/examples/render.rs

@@ -0,0 +1,43 @@
+use pdf::file::FileOptions;
+use pdf_forge_render::render::Renderer;
+use show_image::{create_window, event};
+use std::thread::sleep;
+use std::time::Duration;
+
+macro_rules! timed {
+    ($func_call:expr, $label:expr) => {{
+        let start = std::time::Instant::now();
+        let result = $func_call;
+        let duration = std::time::Instant::now().duration_since(start);
+        println!("{} took {:?}", $label, duration);
+        result
+    }};
+}
+
+#[show_image::main]
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    println!("{:?}", std::env::args());
+    let pdf_path = std::env::args()
+        .nth(1)
+        .expect("Please provide a path to a PDF file as an argument");
+
+    let page_num = std::env::args()
+        .nth(2)
+        .map(|arg| {
+            arg.parse::<u32>()
+                .expect("provide a valid page number as an argument")
+        })
+        .expect("Please provide a ");
+
+    let file = FileOptions::cached().open(pdf_path.as_str())?;
+    let mut renderer = Renderer::new(&file, 75);
+    let window = create_window(format!("page-{}", page_num), Default::default())?;
+    let img = renderer.render(page_num)?;
+    let _ = window.set_image(format!("im-{}", page_num), img)?;
+    for event in window.event_channel()? {
+        if let event::WindowEvent::CloseRequested(event) = event {
+            break;
+        }
+    }
+    Ok(())
+}

src-tauri/src/lib.rs

@@ -1,10 +1,11 @@
-extern crate pdf;
+mod render;
-pub mod render;
 mod retrieval;
 
 #[cfg(test)]
 mod tests;
 
+extern crate pdf;
+
 use crate::pdf::object::Resolve;
 use crate::render::Renderer;
 use image::DynamicImage;
@@ -717,11 +718,11 @@ fn get_xref_table_model_with_file(file: &CosFile) -> Result<XRefTableModel, Stri
     })
 }
 
-pub struct Session {
+struct Session {
     files: RwLock<HashMap<String, Arc<SessionFile>>>,
 }
 
-pub struct SessionFile {
+struct SessionFile {
     pdf_file: PdfFile,
     cos_file: CosFile,
 }

src-tauri/src/render.rs

@@ -6,7 +6,6 @@ use image::{DynamicImage, RgbaImage};
 use pathfinder_geometry::transform2d::Transform2F;
 use pathfinder_rasterize::Rasterizer;
 use pdf_render::{render_page, Cache, SceneBackend};
-use show_image::{create_window, run_context};
 
 pub struct Renderer<'a> {
     file: &'a CosFile,

src-tauri/src/tests.rs

@@ -252,5 +252,28 @@ mod tests {
         );
     }
 
+    use crate::render::{render, render_with_dpi, Renderer};
 
+    #[test]
+    fn test_render() {
+        let file = timed!(
+            FileOptions::cached().open(PDF_SPEC_PATH).unwrap(),
+            "Loading file"
+        );
+        let mut renderer = Renderer::new(&file, 150);
+        let mut rendered_pages: Vec<DynamicImage> = vec![];
+        timed!(
+            for i in 0..1 {
+                let img = timed!(renderer.render(i), format!("render page {}", i));
+                rendered_pages.push(img.unwrap())
+            },
+            "rendering some pages"
+        );
+        timed!(
+            for (num, image) in rendered_pages.iter().enumerate() {
+                image.to_rgb8().save(format!("page_{}.jpg", num)).unwrap()
+            },
+            "saving images"
+        );
+    }
 }