GitHub - redforks/nipdf

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NiPdf

Nipdf is a PDF file reader and tools written in Rust. It is still in development, lack some features, but it can view most PDF files without problem.

Workspace structure

  • nipdf: The core library.
  • nipdf-macro: The macro library for nipdf library.
  • nipdf-render: Render library using tiny-skia library.
  • nipdf-dump: The command line interface tool to extract, dump and convert PDF file to png image.
  • nipdf-reader: The GUI viewer using iced gui library.
  • nipdf-viewer: The GUI viewer using gtk gui library.
  • prescript: Postscript virtual machine, to handle postscript function, type1 font, cmap, etc.
  • cff-parser: CFF font parser.

Start

Run cargo run -p nipdf-reader -- path-of-pdf-file

Screenshot

screenshot

TODO

  • PDF 2.0 support
  • Annotation render
  • Interactive Form
  • Wasm
  • Pure Rust
  • Shadings
    • Radius shading with two circles
    • Free-form Gouraud-shaded triangle meshes (Type 4)
    • Lattice-form Gouraud-shaded triangle meshes (Type 5)
    • Coons patch meshes (Type 6)
    • Tensor-product patch meshes (Type 7)
  • Stable core API

Pure Rust

Fowling C/C++ lib used because of no equivalent rust crates or has missing some feature or bug.

  1. zlib, rust version failed handle some deflate cases
  2. freetype, ttf-parser can not render type1 font, and failed render some cjk glyphs