https://github.com/tyre/gutenex

Native PDF generation for Elixir
https://github.com/tyre/gutenex

Last synced: about 2 months ago
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Native PDF generation for Elixir

• Host: GitHub
• URL: https://github.com/tyre/gutenex
• Owner: tyre
• License: mit
• Created: 2014-09-28T21:51:42.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2018-11-09T19:11:02.000Z (over 5 years ago)
• Last Synced: 2024-04-14T04:10:12.987Z (2 months ago)
• Language: Elixir
• Homepage:
• Size: 902 KB
• Stars: 241
• Watchers: 7
• Forks: 35
• Open Issues: 11
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-elixir - gutenex - Native PDF generation for Elixir. (PDF)

README

        
# Gutenex

[![Build Status](https://travis-ci.org/SenecaSystems/gutenex.svg?branch=master)](https://travis-ci.org/SenecaSystems/gutenex)

PDF generation!

> So weird that it's still a thing for murderers in horror movies to keep clippings of their crimes. PDF that shit!

> — [Julieanne Smolinkski](https://twitter.com/BoobsRadley)

What started out as a wrapper for the Erlang [erlguten](https://github.com/ztmr/erlguten) library has turned into a full rewrite in Elixir.

## Plan

Rewriting the basic PDF functionality means:

* [x] text

* [x] fonts

* [x] images

* [x] rendering/exporting

* [ ] parsing existing PDFs

* [ ] templating

* [ ] documentation

# Usage

```elixir

  # Load image, get alias

  {alpaca_alias, alpaca_rendition} = Gutenex.PDF.Images.load("./test/support/images/alpaca.png")

  {:ok, pid} = Gutenex.start_link

  Gutenex.add_image(pid, alpaca_alias, alpaca_rendition) |>

  Gutenex.begin_text |>

  Gutenex.set_font("Helvetica", 48) |>

  Gutenex.text_position(40, 180) |>

  Gutenex.text_render_mode(:fill) |>

  Gutenex.write_text("ABC") |>

  Gutenex.set_font("Courier", 32) |>

  Gutenex.text_render_mode(:stroke) |>

  Gutenex.write_text("xyz") |>

  Gutenex.end_text |>

  Gutenex.move_to(400, 20) |>

  Gutenex.draw_image(alpaca_alias, %{

      translate_x: 300,

      translate_y: 500,

    }) |>

  Gutenex.export("./tmp/alpaca.pdf") |>

  Gutenex.stop

```

Now open up that file and you should see some text near the bottom and a picture

of what I believe to be an alpaca. Could also be a llama.

By default, coordinates are in units of 1/72 inch as per the PDF

spec. Origin is in lower left corner of the page. This is roughly 1

point in printing terms.

```

  Gutenex.line_width(pid, 0.01)          # very fine line

  |> Gutenex.line({{0, 0}, {500, 500}})  # up and to the right

```