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
What started out as a wrapper for the Erlang erlguten library has turned into a full rewrite in Elixir.
Rewriting the basic PDF functionality means:
- text
- fonts
- images
- rendering/exporting
- parsing existing PDFs
- templating
- documentation
# 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.stopNow 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
React
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