aseldawy / rasem Goto Github PK

Rasem prefixes every generated SVG with a XML- and DOCTYPE-header.

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg width="#{width}" height="#{height}" version="1.1"
  xmlns="http://www.w3.org/2000/svg">

There should be an option to disable this header when outputting directly into HTML code (i.e. embedding the SVG in HTML-code).

Thanks!

can not use the transform "style" to do things like rotation and scaling.
I forked and added code to "write_style(style)"
It works with text but still need to test with other objects
exp:
File.open("test.svg", "w") do |f|
Rasem::SVGImage.new(100, 100, f) do |f|
text 50+(-10+(rand(20))), 50+(-10+(rand(20))), "O", :font_family=>"Akho Desire", "font-size"=>24
text 50+(-10+(rand(20))), 50+(-10+(rand(20))), "I", :font_family=>"Akho Will", "font-size"=>24
text 50+(-10+(rand(20))), 50+(-10+(rand(20))), "A", :font_family=>"Akho Believe", "font-size"=>24, :transform=>" matrix(0,1,-1,0,0,0)"
end
end

When the .rasem file has a syntax error or runtime error, we need the stack trace to point to the error in this file rather than a backtrace pointing to the gem source files

http://www.w3.org/TR/SVG11/paths.html

For SVGs we generate, we need to have attributes on the root node, e.g., viewBox, class, and style. I don't see a documented or spec'ed way to do this.

i = Rasem::SVGImage.new(100, 100) do
  line(0, 0, 100, 100)
end
TypeError: no implicit conversion of Symbol into Integer
	from /.rvm/gems/ruby-2.3.3/gems/rasem-0.7.1/lib/rasem/svg_image.rb:426:in `[]'
	from /.rvm/gems/ruby-2.3.3/gems/rasem-0.7.1/lib/rasem/svg_image.rb:426:in `initialize'
	from (irb):17:in `new'
	from (irb):17
	from /.rvm/rubies/ruby-2.3.3/bin/irb:11:in `<main>'

Ruby 2.3.3
rasem-0.7.1

Hi Ahmet,

your gem is look like awesome! I want to ask how to edit world map svg image with your gem? Can i open any file with it? And if i can, can i edit it and export to svg or other file type?

Thanks!
Ilker

Solution: change this line to set them to nil instead of 0, as (surprisingly) 0 && 0 is truthy.

I'd make a PR if there was any recent activity indicating it would be merged.

Any progress on the export to PNG feature? :)

Add support for text

I love this gem; I end up pulling it out of the toolbox for something about every six months.

Problem
Following the example at https://stackoverflow.com/questions/30229943/hand-drawing-crayon-style-for-svg-path, I tried to create a brush-stroke filter like:

filter(:id=>'strokeFilter') do
	feTurbulence(:baseFrequency=>"0.2", :numOctaves=>"3", :type=>"fractalNoise")
	feDisplacementMap(:xChannelSelector=>"R", :in=>"SourceGraphic", :'scale'=>"8")
end

and got:
"svg_image.rb:169:in `validate_attribute': feDisplacementMap does not support attribute transform"

It looks like validate_attributes(attributes) sees the 'scale' attribute and tries to translate it to a 'transform' attribute internally, but 'scale' is actually a valid attribute on feDisplacementMap.

Possible Solution
I modified validate_attributes like:

  def validate_attributes(attributes , tag )
    clean_attributes = {}
    transforms = {}
    styles = {}

    attributes.each do |attribute, value|
      if Rasem::SVG_TRANSFORM.include?(attribute) && !Rasem::SVG_STRUCTURE[@tag.to_sym][:attributes].include?(attribute.to_sym)
        transforms[attribute] = value
        ...

(adding the tag parameter and the && !Rasem::SVG_STRUCTURE...) and it seems to work fine now. I haven't tested anything else, though.

Thanks!