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GoldenLayout is a web based docker layout engine that aids in creating flexible user interfaces by enabling panels to be docked on the screen.
GitHub & Demo
MediaStreamRecorder.js is a cross-browser implementation to record audio & video streams via WebRTC. The lib allows you to submit/upload recorded blobs in realtime to your server.
API documentation / GitHub
I am currently developing a drag and drop interface for a course builder. Courses are split into lessons and lessons into slides. While switching between slides, I wanted to have a small thumbnail representing the current slide content.
One option would have been to use something like PhantomJS / CasperJS. A headless browser , to take a screenshot of the slide. I have done that in the past and it works perfectly.
This time, I decided to go with another solution, that allows me to convert html to a canvas element.
The project is called html2canvas (GitHub).
“This script allows you to take screenshots of webpages or parts of it, directly on the users browser. The screenshot is based on the DOM and as such may not be 100% accurate to the real representation as it does not make an actual screenshot, but builds the screenshot based on the information available on the page.”
I have a slide container (#slideContainer), that holds the active slide for editing and a thumb navigation to switch between slides (.slide.thumb).
When switching between slides, I am doing a snapshot of the current slideContainer and add it as a new background image to the thumb navigation item for that slide. This is done with canvas.toDataURL() and by embedding the resulting image using a data: url.
Works perfectly. html2canvas has no full css support, so the output will not always match 100%, but its close enough to get a glimpse of what is stored per slide ;)
html2canvas PhantomJS CasperJS
“Gisto is a code snippet manager that runs on GitHub Gists and adds additional features such as searching, tagging and sharing gists while including a rich code editor. All your data is stored on GitHub and you can access it from GitHub Gists at any time with changes carrying over to Gisto.”
The application is multi-platform.
Gisto
“Mosaico is a JavaScript library (or maybe a single page application) supporting the editing of email templates.
The great thing is that Mosaico itself does not define what you can edit or what styles you can change: this is defined by the template.
This makes Mosaico very flexible.”
GitHub
okayNav aims to progressively collapse navigation links into an off-screen navigation, instead of doing it for all the links at the same time.
okayNav@GitHub
Again another Google AMP article, this time dealing with Syntax Highlighting. If you have a code centric website, this is important.
In one of my last articles I talked about a Generic Syntax Highlighter. This time I want to show you, how to add Syntax Highlighting with GeSHi to a custom template in AMP-WP.
Please read up on documentation, as I am not diving into every detail.
Due to Google AMP (Accelerated Mobile Pages) , I have been looking for a way to effectively do Syntax Highlighting without Javascript in pure PHP.
I was about to write my own, when I found an older article from phoboslab. Thanks Dominic for saving me some time ;) Its not perfect, but close enough.
A simple Syntax Highlighting Class that does just that. The class was not working with PHP 5.4.x+, as it uses preg_replace() with the /e modifier.
It will not cover all, but its better than nothing :) I will also add a section to my my AMP tweaks article to showcase the integration of Geshi.
Here an updated version using the preg_replace_callback() function.
@GitHub portalzine/UtilityBelt/SyntaxHighlight
The AMP (Accelerated Mobile Pages Project) plugin for WordPress is still pretty young and under heavy development.
There are little things that can help to fix current validation problems. I have a couple of fresh AMP pages, that are already indexed by Google.
The currently registered Microformats template (schema.org-NewsArticle) requires an image. The AMP-WP documentation explains how to add a featured image to your pages (documentation).
I extended that a bit, to link a default attachment image, I uploaded before. This needs to be added to your themes functions.php.
Next we adjust the Microformats definition. This needs to be added to your themes functions.php.
Read the AMP-WP documentation first :) This forces AMP-WP to override the core template with your own. Use the default template as a reference.
Normally the core sanitizer should take care of that. I am sure a filter will be added in the future. For now, this is a quick workaround. You can use a RegExp or DOMDocument to alter the amp-content in your custom template and filter things that break validation.
I am using phpQuery for now, as it allows me to add quick fixes. DOMNode or QueryPath works nicely as well :) Will be looking at the core sanitizer and options later this week. All of this is currently added to the custom template.
Finally output the fixed content as HTML.
The above examples need to be tweaked to your specific content requirements.
The custom template “post_amp_content” before:
The custom template “post_amp_content” after:
From the AMP specification :”Note, that AMP document may also be linked to directly…”
This is being added to the custom template as well.
Next:
Previous:
You can find a simple pure PHP highlighter here. Not perfect, but a start. Don not forget to include the CSS :)
I will extend on this as new validation errors or tweaks come up. The core sanitizer of AMP-WP still needs some work and should allow us to do some of the above directly, when the content is parsed / converted for AMP.
Make Syntax Highlighting work in AMP-WP using GeSHi
Time to get AMP ready