WordPress: Building Themes from Scratch Using Underscores
Illustration by John Hersey

Working with image galleries


WordPress: Building Themes from Scratch Using Underscores

with Morten Rand-Hendriksen

Video: Working with image galleries

In addition to adding single images throughout the content of a post or First, I need to find the captioning code inside style.css.
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  1. 10m 55s
    1. Welcome
      1m 4s
    2. What to know before you start this course
      2m 40s
    3. How this course and the lesson files work
      3m 12s
    4. Introducing Simone: A preview of the final project
      3m 59s
  2. 21m 28s
    1. Installing and running WordPress on your computer
      3m 53s
    2. Getting and installing Underscores
      4m 11s
    3. Installing WordPress Theme Unit Test data
      4m 18s
    4. Installing the Developer plugin
      2m 58s
    5. Installing and setting up NetBeans or another IDE
      6m 8s
  3. 16m 15s
    1. Designing for mobile, content, and style
      4m 52s
    2. How do WordPress themes work?
      4m 48s
    3. Understanding the WordPress template hierarchy
      2m 19s
    4. Underscores: An overview
      4m 16s
  4. 37m 5s
    1. Setting up style.css
      4m 47s
    2. Configuring baseline settings and functions
      6m 6s
    3. Enabling custom fonts and font icons
      5m 44s
    4. Applying global styles
      5m 11s
    5. Styling basic layout components
      6m 19s
    6. Making the site layout responsive
      8m 58s
  5. 23m 18s
    1. Styling the default header
      6m 25s
    2. Hiding the site title and tagline
      5m 32s
    3. Adding an optional header image function
      5m 23s
    4. Placing the header image behind the site title
      5m 58s
  6. 40m 55s
    1. Setting up menus
      3m 12s
    2. Styling the menu
      7m 42s
    3. Using Superfish for accessible menus
      8m 0s
    4. Making the menu responsive
      7m 3s
    5. Creating a custom social media menu
      5m 51s
    6. Styling the menu with icons from Font Awesome
      9m 7s
  7. 18m 9s
    1. Adding the search form
      6m 27s
    2. Adding the search icon
      6m 55s
    3. Adding show/hide functionality to the search form with jQuery
      4m 47s
  8. 33m 20s
    1. Adding a widgetized area to the footer
      7m 10s
    2. Using the Monster widget plugin to test all widgets
      2m 11s
    3. Styling the footer
      3m 6s
    4. General widget styling
      5m 33s
    5. Adding custom styles to specific widgets
      7m 34s
    6. Using Masonry to make footer widgets responsive
      7m 46s
  9. 54m 49s
    1. Changing the Single Post Template content structure
      5m 54s
    2. Changing the output of meta elements
      7m 2s
    3. Styling the Single Post Template
      7m 57s
    4. Making post meta responsive
      6m 21s
    5. Styling blockquotes
      5m 39s
    6. Creating pull quotes and pull images
      5m 1s
    7. Working with image captions
      4m 27s
    8. Working with image galleries
      4m 57s
    9. Single-post navigation
      7m 31s
  10. 30m 23s
    1. Working with the comments template
      8m 42s
    2. Using Gravatars in comments
      2m 42s
    3. Styling comments
      7m 26s
    4. Highlighting post author comments
      3m 36s
    5. Styling the comment form and messages
      7m 57s
  11. 18m 43s
    1. How do featured images (post thumbnails) work?
      2m 57s
    2. Defining featured image sizes
      3m 30s
    3. Generating new featured images with a plugin
      1m 46s
    4. Adding featured images to a template
      5m 7s
    5. Styling the featured image
      5m 23s
  12. 1h 2m
    1. The index template hierarchy
      2m 21s
    2. Customizing and styling index templates
      10m 10s
    3. Displaying excerpts or full content on index pages
      3m 6s
    4. Adding a custom Read More link
      3m 48s
    5. Adding featured images
      4m 0s
    6. Creating custom pagination navigation
      6m 4s
    7. Highlighting Sticky Posts
      2m 55s
    8. Creating custom post format templates
      5m 30s
    9. Highlighting the most recent post in the index template
      7m 22s
    10. Embracing modular design
      2m 29s
    11. Working with archive.php
      5m 54s
    12. Customizing the search results and the 404 template
      8m 28s
  13. 9m 7s
    1. Styling pages
      3m 4s
    2. Creating custom page templates
      6m 3s
  14. 4m 30s
    1. Adding editor styles to match front-end styles
      4m 30s
  15. 2m 20s
    1. Further learning
      2m 20s

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WordPress: Building Themes from Scratch With Underscores
6h 23m Advanced Jun 11, 2014

Viewers: in countries Watching now:

Ready for your next WordPress challenge? Learn how to build more complex custom themes using the _s (aka Underscores) starter theme. Morten Rand-Hendriksen takes you from basic layout and customization to enabling advanced responsive design and accessibility features. He reinforces the basics lessons with DRY (don't repeat yourself) development practices and a structured approach that will help you build WordPress themes that meet modern standards. Plus, he'll explore core concepts like understanding the WordPress template hierarchy, creating functions, adding custom JavaScript, applying styles, and more.

Topics include:
  • Installing WordPress, Underscores, plugins, and NetBeans
  • Designing for mobile, content, and style
  • Setting up the basic theme
  • Building a custom header
  • Designing responsive, accessible menus
  • Adding a custom search form
  • Using and styling widgets
  • Adjusting the Single Post Template
  • Working with comments, featured images, index templates, and static pages
  • Adding editor styles to match front-end styles
WordPress underscores
Morten Rand-Hendriksen

Working with image galleries

In addition to adding single images throughout the content of a post or a page, WordPress allows you to add image galleries in your post and pages. Image galleries are collections of small thumbnails of images with optional captions that are displayed in a grid pattern. And then when you click on an image you open a larger version of it. Out of the box underscores this knot style image galleries. So you end up with what you see here which is just a vertical list of images. So I'm just going to show you how to apply basic styling to the gallery to make it look like a grid pattern and also deal with the captions.

So here's what I want to do. I want to take each of the images and stack them one next to the other in a nice grid pattern. And I want to grab the caption, style it so that it matches the caption for our single images, and place the caption inside the image, so that when you hover over the image, it appears, and if you don't hover over the image, it disappears. That, of course, will cause us to truncate some of the captions like this really long one. But that's quite all right, because once you go and look at the whole image, you'll get the whole caption. So here, we could start in several different places.

I'm just going to start at the top. First, I need to find the captioning code inside style.css. And you'll find it right here in the media section, directly under the captioning. And the first thing I'm going to do is make sure that the captioning styling that we already created is inherited by the galleries as well. So here we have W-P caption, caption text. I'm going to add a comma here and I'm also going to apply this to gallery caption. And that way we'll at least get the same font and other content on our captioning.

Then I need to go to my code snippets. And here you see I have a list of styles that together work to create a proper gallery. So first I'm going to align each of the gallery items using this first class here, site-main.gallery-item. So I'll copy it out and paste it in directly below site-main.gallery here. So this will target each of the items within my gallery. And here you see we're setting the position to relative, we're setting the max width to 100% so we're not expanding the images beyond their size.

And I set a margin right and then I float everything to the left so that way we'll get this stacked gallery pattern. I'll save this new style and go and check that out in my browser. And now, you see were getting the image of stacking but our captions are causing a lot of problems. So, the next thing we need to do is position the captions absolutely inside the image and that way they will only take up the space of the image itself and we won't have this alignment problem anymore. Back in the code snippets, you'll see I have a huge rule just for the captions.

So I'll copy this one out and paste it in right here where it says gallery caption. And this new rule, positions the gallery caption absolutely to the bottom and left side of the image, and then sets a max height of 50% and a width of a 100%, and does some other things. Most importantly it sets the background color of the caption to black but with a .8 opacity, so you can kind of see through it, and it sets the overall opacity of the caption to zero.

That means the caption will be hidden by default. Of course, since we're hiding it by default, I need to add one more rule here. So when we're hovering over the gallery item, we set the gallery caption opacity to one so that it becomes visible. I'll save that, go back and reload the page. And now you'll see each of our images displays, and when I hover over them you see the captioning. And now we just have one problem left. As you can see, the images look really strange right now. They're kind of squished sideways and we also have this reverse L shape with the background showing through.

Now, the reason why this is happening is because of an existing style within underscores. If we go back to our styles and scroll down you'll see here we have site-main.gallery a img. So any image that's inside a link, so that would be all the images. And then you see the max width is set to 90% and that means the image gets squished in by 90% which is bizarre. I have no idea why it's doing that. So I'm going to remove that style and replace it with a style that actually makes sense. That sets the max width to 100% and also does some other things.

So I'll copy this out, replace this final rule here. So now we set the max width to 100%, set the height to auto so that it scales properly. I'll display each item as a block and I'll also set the margin inside the image to zero and auto so that it's center aligned. I'll save that and reload my page one more time. And now our image gallery looks the way it's supposed to. If I hover over an image, I see the caption and I can click on any of the images to go to that image.

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