Issue #41: Prepare for thumbnails to work.

Author: geerlingguy

.github/workflows/github-pages.yml

@@ -0,0 +1,38 @@
+# GitHub Action for Jekyll
+#
+# Runs jekyll build on master and pushes output to gh-pages branch.
+# (Then GitHub deploys that static content.)
+
+name: Build & Deploy to GitHub Pages
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  github-pages:
+    runs-on: ubuntu-latest
+    container: ruby:2-buster
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/cache@v1
+        with:
+          path: site/vendor/bundle
+          key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
+
+      - name: Install Ruby dependencies.
+        run: |
+          gem install bundler
+          bundle install
+        working-directory: site
+
+      - name: Build static site with Jekyll.
+        run: bundle exec jekyll build
+        working-directory: site
+
+      - name: Deploy static site to gh-pages branch.
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./site/_site

CONTRIBUTING.md

@@ -5,3 +5,4 @@ source "https://rubygems.org"
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
 gem 'github-pages', group: :jekyll_plugins
+gem "smartcropper", "~> 0.7.1"

Gemfile

@@ -222,6 +222,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
+    rmagick (4.1.2)
     rouge (3.23.0)
     ruby-enum (0.8.0)
       i18n
@@ -238,6 +239,8 @@ GEM
       faraday (> 0.8, < 2.0)
     simpleidn (0.1.1)
       unf (~> 0.1.4)
+    smartcropper (0.7.1)
+      rmagick (> 2.11.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)
@@ -256,6 +259,7 @@ PLATFORMS
 
 DEPENDENCIES
   github-pages
+  smartcropper (~> 0.7.1)
 
 BUNDLED WITH
    2.1.4

Gemfile.lock

@@ -3,6 +3,7 @@ theme: jekyll-theme-slate
 title: Raspberry Pi PCIe Devices
 url: https://pipci.jeffgeerling.com/
 fathom_analytics: true
+
 collections:
   cards_adapter:
     output: true

_cards_adapter/exacq-ti-xio3130-2-port-pcie-switch.md

@@ -33,7 +33,7 @@ <h1 id="card_title">{{ page.title }}</h1>
 
         <div class="card_picture">
           {% if page.picture %}
-            <a href="/images/card-pictures/{{ page.picture }}"><img src="/images/card-pictures/{{ page.picture }}" alt="{{ page.title }}"></a>
+            <a href="{{ page.picture }}"><img src="{{ page.picture }}" alt="{{ page.title }}"></a>
           {% else %}
             <p><em>There is no picture for this card yet.</em></p>
           {% endif %}

_cards_adapter/hlt-1x-16x-extension-cable.md

@@ -0,0 +1,11 @@
+# image_thumbnail.rb
+
+module Jekyll
+  module ImageThumbnail
+    def image_thumbnail(input)
+      input.sub("/images/", "/images/thumbnail/")
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::ImageThumbnail)

_cards_adapter/iocrest-si-pex60016-2-port-pcie-switch.md

@@ -0,0 +1,43 @@
+# post_thumbnail_generator.rb
+require "smartcropper"
+
+module Jekyll
+
+  class PostThumbnailImage < StaticFile
+    def initialize(site, base, dir, name)
+      @site = site
+      @base = base
+      @dir = dir
+      @dest_dir = File.join("images", "thumbnail")
+      @name = name
+    end
+
+    def destination(dest)
+      File.join(dest, @dest_dir, @name)
+    end
+
+    def write(dest)
+      dest_path = destination(dest)
+
+      return false if File.exist?(dest_path) and !modified?
+      @@mtimes[path] = mtime
+
+      FileUtils.mkdir_p(File.dirname(dest_path))
+      SmartCropper.from_file(path).smart_crop_and_scale(200, 200).write(dest_path)
+
+      true
+    end
+  end
+
+  class PostThumbnailGenerator < Generator
+    def generate(site)
+      # TODO: cards_m2, cards_network, cards_storage, etc...
+      site.cards_gpu.each {|post|
+        if post.data.has_key?("picture")
+          site.static_files << PostThumbnailImage.new(site, site.source, "_images", File.basename(post.data["image"]))
+        end
+      }
+    end
+  end
+
+end