Class: JekyllIS::Images::Kramdown::Image

Inherits:
Value
  • Object
show all
Defined in:
lib/jekyll-is/images/kramdown/image.rb

Instance Attribute Summary collapse

Attributes inherited from Value

#attrs, #classes, #context, #flags, #id, #styles

Instance Method Summary collapse

Methods inherited from Value

#to_kramdown, #to_latex

Constructor Details

#initialize(context, figure: nil) ⇒ Image

Returns a new instance of Image.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 13

def initialize context, figure: nil
  super(context)
  @figure = figure
end

Instance Attribute Details

#alt ⇒ Object (readonly)

Returns the value of attribute alt.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def alt
  @alt
end

#caption ⇒ Object (readonly)

Returns the value of attribute caption.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def caption
  @caption
end

#caption_position ⇒ Object (readonly)

Returns the value of attribute caption_position.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def caption_position
  @caption_position
end

#crop ⇒ Object (readonly)

Returns the value of attribute crop.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def crop
  @crop
end

#figure ⇒ Object (readonly)

Returns the value of attribute figure.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 11

def figure
  @figure
end

#fit ⇒ Object (readonly)

Returns the value of attribute fit.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def fit
  @fit
end

#format ⇒ Object (readonly)

Returns the value of attribute format.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def format
  @format
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def height
  @height
end

#href ⇒ Object (readonly)

Returns the value of attribute href.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def href
  @href
end

#lazy ⇒ Object (readonly)

Returns the value of attribute lazy.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def lazy
  @lazy
end

#salt ⇒ Object (readonly)

Returns the value of attribute salt.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def salt
  @salt
end

#scale ⇒ Object (readonly)

Returns the value of attribute scale.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def scale
  @scale
end

#shift ⇒ Object (readonly)

Returns the value of attribute shift.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def shift
  @shift
end

#src ⇒ Object (readonly)

Returns the value of attribute src.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def src
  @src
end

#title ⇒ Object (readonly)

Returns the value of attribute title.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def title
  @title
end

#up ⇒ Object (readonly)

Returns the value of attribute up.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def up
  @up
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 18

def width
  @width
end

Instance Method Details

#apply(element) ⇒ Object 



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 20

def apply element
  super(element)
  super(element.children.first) if element.type == :a
  @alt = @attrs.delete('alt')
  @src = @attrs.delete('src')
  @format = @attrs.delete('format') || @context.detect_format(@src)
  @href = @attrs.delete('href') || @context.config('default_link')
  @href = @context.config("default_link") if @href == ''
  @href = false  if [ '0', 'false', 'no', 'none' ].include?(@href)
  @href = 'view' if [ '1', 'true', 'yes', 'auto' ].include?(@href)
  @title = @attrs.delete('title')
  @width = @attrs.delete('width')&.to_i
  @height = @attrs.delete('height')&.to_i
  @scale = @attrs.delete('scale')&.to_f
  @crop = @attrs.delete('crop')
  @fit = @attrs.delete('fit')
  @shift = @attrs.delete('shift')&.to_i
  @up = @attrs.delete('up')&.to_i
  @caption = @attrs.delete('caption')
  @alt ||= @title || @caption || ''
  @title ||= @alt unless @alt.nil? || @alt.empty?
  @title ||= @caption
  @title = nil if @title == ''
  @caption = nil if @caption == ''
  @caption ||= @alt if @flags.delete?('caption')
  @lazy = @flags.delete?('lazy')
  @salt = @attrs.delete('salt')
  @caption_position = @attrs.delete('caption-position')
end

#category ⇒ Object 



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 9

def category = :span

#to_html(overlay: {}) ⇒ Object 



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 50

def to_html(overlay: {})

  @context.page.data['__is_images_has_images'] = true
  transform = transform_parameters overlay
  image = JekyllIS::Images::Image::transform @context, @src, transform

  overlay['__url'] = image.url

  img_styles = @styles.dup
  if transform[:width]
    img_styles['--is-images-width'] = "#{ transform[:width] }px"
  elsif transform[:height] && image.aspect_ratio
    img_styles['--is-images-width'] = "#{ transform[:height] * image.aspect_ratio }px"
  end
  img_styles['--is-images-aspect-ratio'] = image.aspect_ratio.to_s if image.aspect_ratio
  img_styles['--is-images-scale'] = transform[:scale] if transform[:scale]
  img_styles['--is-images-fit'] = transform[:fit] if transform[:fit]
  img_styles['--is-images-shift'] = "#{ @shift }px" if @shift
  img_styles['--is-images-up'] = "#{ @up }px" if @up

  img_classes = @classes.dup
  img_classes << '__is_images_image'
  img_classes << "__is_images_#{ overlay['mode'] }" if overlay['mode']
  @flags.each do |flag|
    img_classes << "__is_images__#{ flag }"
  end

  img_attrs = {}
  img_attrs['id'] = @id if @id
  img_attrs['src'] = image.url
  img_attrs['alt'] = @alt if @alt
  img_attrs['class'] = img_classes.join(' ')
  img_attrs['style'] = img_styles.map { |k, v| "#{ k }:#{ v };" }.join('')
  img_attrs['loading'] = 'lazy' if @lazy || overlay['lazy']
  img_attrs['data-scale'] = transform[:scale] || 1
  img_attrs['data-caption'] = process_caption(@caption) if @caption

  data = @attrs.select { |k, _| k.start_with?("data-") }
  img_attrs.merge! data

  img = "<img #{ img_attrs.map { |k, v| "#{ k }=\"#{ v }\"" }.join(' ') }>"

  wrp_tag = 'a'
  wrp_attrs = {}
  if @href == 'view'
    if @src.start_with?('http://') || @src.start_with?('https://')
      wrp_attrs['href'] = @src
    else
      view_transform = view_transform_parameters overlay
      image = JekyllIS::Images::Image::transform @context, @src, view_transform
      wrp_attrs['href'] = image.url
    end
  elsif @href
    wrp_attrs['href'] = @href
  else
    wrp_tag = 'span'
  end
  wrp_attrs['title'] = @title if @title
  wrp_attrs['class'] = '__is_images_wrapper'

  "<#{ wrp_tag } #{ wrp_attrs.map { |k, v| "#{ k }=\"#{ v }\"" }.join(' ') }>#{ img }</#{ wrp_tag }>"
end

#type ⇒ Object 



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# File 'lib/jekyll-is/images/kramdown/image.rb', line 8

def type = :is_image