Module: Cabird::PrettyTextHelper

Defined in:
lib/pretty_text_helper.rb

Overview

This module contains helper methods to create PrettyText objects and to include the generated image in your view.

Instance Method Summary collapse

Instance Method Details

#pretty_text(str, style = nil, tag = "span", html_options = nil) ⇒ Object

This helper creates a PrettyText object and shows the generated text as background image of a HTML-tag. You can set the style of the rendered text by a PrettyTextStyle object or by a hash:

<% @style = Cabird::PrettyTextStyle.new(:color => '#666666', :size => 30) %>
<%= pretty_text("the text", @style, 'h1')

or

<%= pretty_text("the text", {:color => '#666666', :size => 30}, 'h1')

which will result in the same output:

<h1 style="... background: url('...'); ...">the text</h1>

Using the PrettyTextStyle class gives you the opportunity to use a kind of style inheritance:

<% @style = Cabird::PrettyTextStyle.new(:color => '#666666', :size => 30) %>
<%= pretty_text("a headline", @style, 'h1')
<%= pretty_text("normal text", @style.alter(:size => 12), 'p')

Use the html_options to append HTML options to the tag:

<%= pretty_text("the text", @style, 'h1', {:class => "myclass"})



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# File 'lib/pretty_text_helper.rb', line 30

def pretty_text(str, style = nil, tag="span", html_options = nil)
  text = Cabird::PrettyText.create(str, style);

  if html_options
    html_options = html_options.stringify_keys
    convert_options_to_javascript!(html_options)
    tag_options = tag_options(html_options)
  else
    tag_options = nil
  end

  style  = "display:block;overflow:hidden;text-indent:-9999px;"
  style << "width:#{text.width}px;height:#{text.height}px; "
  style << "background:left top no-repeat url('#{image_path(text.path)}');"

  ret =  "<#{tag} style=\"#{style}\"#{tag_options}>"
  ret << h(text.content)
  ret << "</#{tag}>"
end

#pretty_text_path(str, style = nil) ⇒ Object

This method returns the public path to the rendered text. The parameters are the same as the two first parameters of the pretty_text method.



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# File 'lib/pretty_text_helper.rb', line 52

def pretty_text_path(str, style = nil)
  text = Cabird::PrettyText.create(str, style);
  return text.path
end