1.6.0

Add registers.site to context when rendering template

README.md

@@ -35,11 +35,15 @@ For more advanced templates, see the [**Templates**](#templates) section below.
 
 ### 3. Configure the plugin
 
-You **must** have a `responsive_image` block in your `_config.yml` for this plugin to work. The minimum required configuration is a `template` path:
+You **must** have a `responsive_image` block in your `_config.yml` for this plugin to work. At a minimum, your `responsive_image` configuration should have a template path and a list of sizes.
 
 ```yaml
 responsive_image:
   template: _includes/responsive-image.html
+  sizes:
+    - width: 320
+    - width: 480
+    - width: 800
 ```
 
 For a list of all the available configuration options, see the [**All configuration options**](#all-configuration-options) section below.

features/responsive-image-block.feature

@@ -13,6 +13,20 @@ Feature: Jekyll responsive_image_block tag
     When I run Jekyll
     Then I should see "<img alt=\"Lorem ipsum\" src=\"/assets/everybody-loves-jalapeño-pineapple-cornbread.png\" title=\"Magic rainbow adventure!\"" in "_site/index.html"
 
+  Scenario: Tabs for indentation
+    Given I have a responsive_image configuration with "template" set to "_includes/responsive-image.html"
+    And I have a file "index.html" with:
+      """
+      {% assign path = 'assets/everybody-loves-jalapeño-pineapple-cornbread.png' %}
+      {% responsive_image_block %}
+      	path: {{ path }}
+      	title: Magic rainbow adventure!
+      	alt: Lorem ipsum
+      {% endresponsive_image_block %}
+      """
+    When I run Jekyll
+    Then I should see "<img alt=\"Lorem ipsum\" src=\"/assets/everybody-loves-jalapeño-pineapple-cornbread.png\" title=\"Magic rainbow adventure!\"" in "_site/index.html"
+
   Scenario: Global variables available in templates
     Given I have a file "index.html" with:
       """

features/test-site/_includes/responsive-image.html

@@ -1 +1,3 @@
+{% assign largest = resized | sort: 'width' | last %}
+
 <img alt="{{ alt }}" src="/{{ original.path }}" title="{{ title }}" srcset="{% for i in resized %}/{{ i.path }} {{ i.width }}w,{% endfor %}/{{ original.path }} {{ original.width }}w">

lib/jekyll-responsive-image/block.rb

@@ -4,7 +4,13 @@ module Jekyll
       include Jekyll::ResponsiveImage::Utils
 
       def render(context)
-        attributes = YAML.load(super)
+        content = super
+
+        if content.include?("\t")
+          content = content.lines.map {|line| line.gsub(/\G[\t ]/, "  ")}.join("\n")
+        end
+
+        attributes = YAML.load(content)
         Renderer.new(context.registers[:site], attributes).render_responsive_image
       end
     end

lib/jekyll-responsive-image/image_processor.rb

@@ -8,12 +8,11 @@ module Jekyll
 
         Jekyll.logger.warn "Invalid image path specified: #{image_path.inspect}" unless File.file?(absolute_image_path)
 
-        resize_handler = ResizeHandler.new
-        img = Magick::Image::read(absolute_image_path).first
+        resize_handler = ResizeHandler.new(absolute_image_path, config)
 
         {
-          original: image_hash(config, image_path, img.columns, img.rows),
-          resized: resize_handler.resize_image(img, config),
+          original: image_hash(config, image_path, resize_handler.original_image.columns, resize_handler.original_image.rows),
+          resized: resize_handler.resize_image,
         }
       end
 

lib/jekyll-responsive-image/renderer.rb

@@ -25,7 +25,11 @@ module Jekyll
           partial = File.read(image_template)
           template = Liquid::Template.parse(partial)
 
-          result = template.render!(@attributes.merge(@site.site_payload))
+          info = {
+            registers: { site: @site }
+          }
+
+          result = template.render!(@attributes.merge(@site.site_payload), info)
 
           RenderCache.set(cache_key, result)
         end

lib/jekyll-responsive-image/resize_handler.rb

@@ -3,26 +3,39 @@ module Jekyll
     class ResizeHandler
       include ResponsiveImage::Utils
 
-      def resize_image(img, config)
-        img.auto_orient! if config['auto_rotate']
+      attr_reader :original_image
 
+      def initialize(original_image_absolute_path, config)
+        @config = config
+
+        @original_image_absolute_path = original_image_absolute_path
+
+        if @config['auto_rotate']
+          load_full_image
+          @original_image.auto_orient!
+        else
+          load_image_properties_only
+        end
+      end
+
+      def resize_image
         resized = []
 
-        config['sizes'].each do |size|
+        @config['sizes'].each do |size|
           width = size['width']
-          ratio = width.to_f / img.columns.to_f
-          height = (img.rows.to_f * ratio).round
+          ratio = width.to_f / @original_image.columns.to_f
+          height = (@original_image.rows.to_f * ratio).round
 
-          next unless needs_resizing?(img, width)
+          next unless needs_resizing?(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))
+          image_path = @original_image.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])
+          site_source_filepath = File.expand_path(filepath, @config[:site_source])
+          site_dest_filepath = File.expand_path(filepath, @config[:site_dest])
 
-          if config['save_to_source']
+          if @config['save_to_source']
             target_filepath = site_source_filepath
           else
             target_filepath = site_dest_filepath
@@ -36,16 +49,22 @@ module Jekyll
 
           Jekyll.logger.info "Generating #{target_filepath}"
 
-          if config['strip']
-            img.strip!
-          end
-          i = img.scale(ratio)
-          i.write(target_filepath) do |f|
-            f.interlace = i.interlace
-            f.quality = size['quality'] || config['default_quality']
+          load_full_image unless @original_image_pixels_loaded
+
+          if @config['strip']
+            @original_image.strip!
           end
 
-          if config['save_to_source']
+          i = @original_image.scale(ratio)
+
+          quality = size['quality'] || @config['default_quality']
+
+          i.write(target_filepath) do |f|
+            f.interlace = i.interlace
+            f.quality = quality
+          end
+
+          if @config['save_to_source']
             # Ensure the generated file is copied to the _site directory
             Jekyll.logger.info "Copying resized image to #{site_dest_filepath}"
             FileUtils.copy_file(site_source_filepath, site_dest_filepath)
@@ -54,7 +73,7 @@ module Jekyll
           i.destroy!
         end
 
-        img.destroy!
+        @original_image.destroy!
 
         resized
       end
@@ -65,8 +84,18 @@ module Jekyll
         Pathname.new(format % params).cleanpath.to_s
       end
 
-      def needs_resizing?(img, width)
-        img.columns > width
+      def needs_resizing?(width)
+        @original_image.columns > width
+      end
+
+      def load_full_image
+        @original_image = Magick::Image::read(@original_image_absolute_path).first
+        @original_image_pixels_loaded = true
+      end
+
+      def load_image_properties_only
+        @original_image = Magick::Image::ping(@original_image_absolute_path).first
+        @original_image_pixels_loaded = false
       end
 
       def ensure_output_dir_exists!(path)

lib/jekyll-responsive-image/version.rb

@@ -1,5 +1,5 @@
 module Jekyll
   module ResponsiveImage
-    VERSION = '1.5.3'.freeze
+    VERSION = '1.6.0'.freeze
   end
 end