CodeTown

www.codetown.us ::: a software developer's community

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: 2660

Comment

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

Join CodeTown

Translate Codetown

Looking for Jobs or Staff?

Check out the Codetown Jobs group. There's also a free Jobs mailing list.

 

 



Enjoy the site? Support Codetown with your donation.




Reading List

HowStuffWorks "How Cloud Computing Works"

In a cloud computing system, there's a significant workload shift. Local computers no longer have to do all the heavy lifting when it comes to running applications. The network of computers that make up the cloud handles them instead. Hardware and software demands on the user's side decrease. The only thing the user's computer needs to be able to run is the cloud computing system's interface software, which can be as simple as a Web browser, and the cloud's network takes care of the rest...

What cloud computing really means | Cloud Computing - InfoWorld

Cloud computing is all the rage. "It's become the phrase du jour," says Gartner senior analyst Ben Pring, echoing many of his peers. The problem is that (as with Web 2.0) everyone seems to have a different definition...

Cloud computing - Wikipedia, the free encyclopedia

Cloud computing is the delivery of computing as a service rather than a product, whereby shared resources, software, and information are provided to computers and other devices as a utility (like the electricity grid) over a network (typically the Internet).

Eclipse DemoCamps November 2011 - Eclipsepedia

From November 1-30, we are inviting individuals to organize and attend Eclipse 10th Birthday Parties around the world! Click the link to see details.

YouTube Founders Aim to Revamp Delicious - NYTimes.com

Chad Hurley and Steve Chen have some experience with turning a small Web site into Internet gold. In 2006 they sold their scrappy start-up YouTube to Google for $1.65 billion. Jim Wilson/The New York Times The Delicious office in San Mateo, Calif. It now has around 15 employees, mostly engineers. More recently they picked an unlikely candidate to be their next Web sensation: a Yahoo castoff.
Locations of visitors to this page


Codetown on Facebook

© 2014   Created by Michael Levin.

Badges  |  Report an Issue  |  Terms of Service