Dragonfly SVG

Dragonfly analyser and processors for SVGs.

Uses the nokogiri gem for SVG parsing.

Installation

Add this line to your application's Gemfile:

gem 'dragonfly_svg'

And then execute:

$ bundle

Or install it yourself as:

$ gem install dragonfly_svg

Usage

The analyser and processors are added by configuring the plugin

Dragonfly.app.configure do
  plugin :svg
end

Supported Formats

List of supported formats is available as:

DragonflySvg::SUPPORTED_FORMATS # => ["svg", "svgz", "svg.gz"]

Analyser

The analyser supplies the following methods:

svg.width
svg.height
svg.aspect_ratio
svg.id
svg.portrait?
svg.landscape?

Processors

ExtendIds

Adds a random string to the id. Helpful when embedding SVGs, in which case the id should be unique. You can also supply your own String.

svg.extend_ids
svg.extend_ids('foo')

RemoveNamespaces

Removes the xmlns namespace from the SVG.

svg.remove_namespaces

SetAttribute

Allows to set attribute for specified xpath:

svg.set_attribute('./*[name()="svg"]', 'style', 'margin: 50px;')

SetTagValue

Allows to set tag value for specified xpath:

svg.set_tag_value('./*[name()="text"]', 'Updated text')

SetDimensions

Sets the dimensions of the SVG. Takes two parameters: width and height

svg.set_dimensions(210, 297)

SetNamespace

Sets the xmlns namespace of the SVG. Default is http://www.w3.org/2000/svg unless something is supplied.

svg.set_namespace                     # xmlns="http://www.w3.org/2000/svg"
svg.set_namespace('foo')              # xmlns="foo"

SetPreserveAspectRatio

Sets the preserveAspectRatio attribute of the SVG. Default is xMinYMin meet unless something is supplied.

svg.set_preserve_aspect_ratio         # preserveAspectRatio="xMinYMin meet"
svg.set_preserve_aspect_ratio('foo')  # preserveAspectRatio="foo"

SetViewBox

Sets the viewBox attribute of the SVG. Takes four parameters: min_x, min_y, width and height.

svg.set_view_box(0, 0, 400, 600)       # viewBox="0 0 400 600"

Contributing

1. Fork it ( https://github.com/tomasc/dragonfly_svg/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request