JavaFX and SteelSeries gauges using FXML

Gerrit Grunwald, aka @hansolo_ on twitter, has just ported his Swing based gauges and meters framework known as SteelSeries to JavaFX as part of the JFXtras-lab project. I can't tell you how many times since Java AWT first came out, that I have had to use meters and gauges in an application. Also, I can't count how many times I have found a dearth of open source gauge frameworks out there in the wild. Needless to say, I have been watching Gerrit's progress for several months now.  Finally, he posted his work to jxftras-lab and I have been eagerly testing ever since.

One area I wanted to see is if Gerrit's gauges worked with JavaFX FXML. JavaFX FXML is an XML-based language that provides the structure for building a user interface separate from the application logic of your code. With the numerous options that Gerrit's gauges support, this is a must have. I am happy to report with a little back and forth with Gerrit over a few days, we now have a working version that supports FXML. You'll have to download and build the latest jfxtras-lab bits from github, here.

Here is an FXML snippet showing how to define a Radial gauge in FXML. This matches Gerrit's blog, showing the same settings using Java code, here.

<Radial fx:id="radialGauge" prefWidth="280" prefHeight="280" title="Temperature" >
  <unit>°C</unit>
  <lcdDecimals>2</lcdDecimals>
  <frameDesign>STEEL</frameDesign>
  <backgroundDesign>DARK_GRAY</backgroundDesign>
  <lcdDesign>STANDARD_GREEN</lcdDesign>
  <lcdDecimals>2</lcdDecimals>
  <lcdValueFont>LCD</lcdValueFont>
  <pointerType>TYPE14</pointerType>
  <valueColor>RED</valueColor>
  <knobDesign>METAL</knobDesign>
  <knobColor>SILVER</knobColor>
  <sections>
    <Section start="0" stop="37" color="lime"/>
    <Section start="37" stop="60" color="yellow"/>
    <Section start="60" stop="75" color="orange"/>
  </sections>
  <sectionsVisible>true</sectionsVisible>
  <areas>
    <Section start="75" stop="100" color="red"/>
  </areas>
  <areasVisible>true</areasVisible>
  <markers>
    <Marker value="30" color="magenta"/>
    <Marker value="75" color="aquamarine"/>
  </markers>
  <markersVisible>true</markersVisible>
  <threshold>40</threshold>
  <thresholdVisible>true</thresholdVisible>
  <glowVisible>true</glowVisible>
  <glowOn>true</glowOn>
  <trendVisible>true</trendVisible>
  <trend>RISING</trend>
  <userLedVisible>true</userLedVisible>
  <bargraph>true</bargraph>
  <radialRange>RADIAL_300</radialRange>
  <GridPane.rowIndex>0</GridPane.rowIndex>
  <GridPane.columnIndex>0</GridPane.columnIndex>
  <GridPane.halignment>CENTER</GridPane.halignment>
  <GridPane.valignment>CENTER</GridPane.valignment>
</Radial>

 

This produced the following display:

In FXML, you create a Java controller class. For this simple example, in the controller class, Gauge.java, I created a JavaFX Timeline that iterates from the minimum to the maximum value over 10 seconds, alternating with rising and falling values. The actual Radial Gauge is represented by the "radialGauge" member of the controller that is annotated with @FXML. This allows the FXML system to match the actual JavaFX Radial Control instance to the controller member variable based on the FXML"fx:id" attribute. The initialize method of the controller class is called once the FXML system has processed the XML and created all the JavaFX Nodes.

The main JavaFX application is contained in the class SteelFX and it loads the FXML file then assigns it to the JavaFX Scene.

 

The complete code is here:

SteelFX.java

Gauge.fxml

Gauge.java

 

Views: 10367

Comment

You need to be a member of Codetown to add comments!

Join Codetown

Happy 10th year, JCertif!

Notes

Welcome to Codetown!

Codetown is a social network. It's got blogs, forums, groups, personal pages and more! You might think of Codetown as a funky camper van with lots of compartments for your stuff and a great multimedia system, too! Best of all, Codetown has room for all of your friends.

When you create a profile for yourself you get a personal page automatically. That's where you can be creative and do your own thing. People who want to get to know you will click on your name or picture and…
Continue

Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.

Looking for Jobs or Staff?

Check out the Codetown Jobs group.

 

Enjoy the site? Support Codetown with your donation.



InfoQ Reading List

Article: The What and Why of Programmable Proxies

A question which gets often asked is “What is a programmable proxy, and why do I need one?” This article tries to answer this question from different perspectives. We will start with a brief definition of what a proxy is, then discuss how proxies evolved, explaining what needs they responded to and what benefits they offered at each stage. Finally, we discuss several aspects of programmability.

By Cai Shu, Ali Naqvi

State of the Java Ecosystem Report From New Relic

New Relic recently published a new report on the State of Java Ecosystem using data gathered in January 2022 from millions of anonymized applications that provided performance data.

By Andrea Messetti

Microsoft + Java = ♡: a Story Told by Martijn Verburg at Devoxx UK

Three years after Microsoft acquired jClarity, Martjin Verburg presented at Devoxx UK on how reliant Microsoft is on Java. If the two didn’t seem to fit on the same page, the reality is different: Microsoft runs 2 M JVMs in production for internal purposes, 50+ Android apps, and Azure’s internal systems and Minecraft are built in Java. Moreover, Microsoft is committed to moving Java forward.

By Olimpiu Pop

Podcast: ML Tools to Accelerate your work with Cassie Breviu

Live from the venue of the QCon London Conference, we are talking with Casie Breviu. She will talk about how she got started with AI, and what machine learning tools can accelerate your work when deploying models on a wide range of devices. We will also talk about GitHub Copilot and how AI can help you be a better programmer.

By Cassie Breviu

Trust-Driven Development: Building Cognitive and Emotional Pillars

Trust-driven development uses authenticity to build a safe environment for people to operate. To build trust we need to focus on two main pillars of trust – cognitive and emotional. We need to be brave, have courage, and give people access to our authentic selves.

By Ben Linders

© 2022   Created by Michael Levin.   Powered by

Badges  |  Report an Issue  |  Terms of Service