Class: Jekyll::ResponsiveImage::ResizeHandler
- Inherits:
-
Object
- Object
- Jekyll::ResponsiveImage::ResizeHandler
show all
- Includes:
- Utils
- Defined in:
- lib/jekyll/responsive_image/resize_handler.rb
Instance Method Summary
collapse
Methods included from Utils
#image_hash, #keep_resized_image!, #relative_dirname, #symbolize_keys
Instance Method Details
#ensure_output_dir_exists!(path) ⇒ Object
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# File 'lib/jekyll/responsive_image/resize_handler.rb', line 58
def ensure_output_dir_exists!(path)
dir = File.dirname(path)
unless Dir.exist?(dir)
Jekyll.logger.info "Creating output directory #{dir}"
FileUtils.mkdir_p(dir)
end
end
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# File 'lib/jekyll/responsive_image/resize_handler.rb', line 48
def format_output_path(format, config, image_path, width, height)
params = symbolize_keys(image_hash(config, image_path, width, height))
Pathname.new(format % params).cleanpath.to_s
end
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#needs_resizing?(img, width) ⇒ Boolean
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# File 'lib/jekyll/responsive_image/resize_handler.rb', line 54
def needs_resizing?(img, width)
img.columns > width
end
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#resize_image(img, config) ⇒ Object
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# File 'lib/jekyll/responsive_image/resize_handler.rb', line 6
def resize_image(img, config)
resized = []
config['sizes'].each do |size|
width = size['width']
ratio = width.to_f / img.columns.to_f
height = (img.rows.to_f * ratio).round
next unless needs_resizing?(img, width)
image_path = img.filename.force_encoding(Encoding::UTF_8)
filepath = format_output_path(config['output_path_format'], config, image_path, width, height)
resized.push(image_hash(config, filepath, width, height))
site_source_filepath = File.expand_path(filepath, config[:site_source])
site_dest_filepath = File.expand_path(filepath, config[:site_dest])
next if File.exist?(site_source_filepath)
ensure_output_dir_exists!(site_source_filepath)
ensure_output_dir_exists!(site_dest_filepath)
Jekyll.logger.info "Generating #{site_source_filepath}"
i = img.scale(ratio)
i.write(site_source_filepath) do |f|
f.quality = size['quality'] || config['default_quality']
end
Jekyll.logger.info "Copying resized image to #{site_dest_filepath}"
FileUtils.copy_file(site_source_filepath, site_dest_filepath)
i.destroy!
end
img.destroy!
resized
end
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