I've just written an article listing the top 5 libraries for creating GUI on Embedded Linux. I've only mentioned one tool that renders HTML UI, the Sciter engine. It's much more compact than Webkit or Chromium. The owner of the project, Andrew Fedoniouk, recently released a new version called Sciter.Lite that will support embedded devices. Check out these two resources.
https://sciter.com/sciter-lite-is-published/
https://sciter.com/windowless-sciter-android-and-iot-devices/
Demos are already available on their GitHub
- sdk/bin.lnx/x64lite
- sdk/demos.lite
You don't have to limit yourself to HTML UI, check out the other tools I've recommended. All of them have a free version. For rich UI, I think HTML UI is easier. I mean, Sciter Notes doesn't look to shabby and it's just under 5Mb for Win, Linux and Mac. But the backend is C++. For more minimal hardware, you'll have to look into the C/C++ toolkits I've listed. TotalCross are planning to support Android XML but has not been released yet. So you can check on them also.
Oh. Almost forgot. Two whitepapers comparing QML and HTML5 were published in 2017. Qt requires you to register so I'll just give you the links so that you can download them without registering :)
Paper 1: Qt QML v HTML5 –a practical comparison
Published on May 2017 by Sequality Software Engineering an Austrian firm that is a Qt partner and does Qt consultancy.
Downlink Link 1, Download Link 2
Here is a review of the paper by a software engineer, Amir Shrestha, who provided the first download link. There is more discussion at Hacker News. There was also an interesting discussion thread in a YouTube video about the comparison. You can read the YT comment section but first search "Andrew MacAulay" and read that thread. He was the lead engineer for the autopilot system for the F-18 jets and has worked in other senior embedded roles.
Paper 2: Qt or HTML5? A Million Dollar Question
Published on Oct 2, 2017, by Burkhard Stubert a Qt consultant and developer.
Download Link
Here is the discussion on Hacker News.
An interesting piece of information I found in the second paper is that 90%+ of all home appliances are powered by micro-controllers with no OS or a very minimal RTOS.
Another interesting piece of information I discovered while writing my article, is that Micrium OS and components are now open-source under Apache 2.0. It has its own GUI toolkit written in C but it only targets Micrium OS and not embedded Linux. If developers start adopting Micrium OS (it was already quite popular in the industry and even launched in space) perhaps you can start looking into it too.
