Codetown ::: a software developer's community
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:
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.
Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.
Check out the Codetown Jobs group.
Sasha Rosenbaum discusses the evolution from shipping products to running services, and what she learned while trying different approaches.
By Sasha RosenbaumDevelopers and designers can work together to share knowledge and experience when working on creating accessible applications. Accessibility issues can be treated as any other bug, something that needs to be solved first. Accessibility should be embraced as something very serious and important to society, and approached as a business opportunity.
By Ben LindersGrafana Labs has introduced "Sift," a feature for Grafana Cloud designed to enhance incident response management (IRM) by automating system checks and expediting issue resolution. Sift automates various aspects of incident investigation. Sift provides valuable insights into potential issues within Kubernetes environments, helping engineers focus on resolving incidents.
By Matt SaundersAWS recently announced the general availability of Amazon EC2 M2 Pro Mac instances (mac2-m2pro.metal) as a virtual Mac offering on its Elastic Computing Cloud (EC2).
By Steef-Jan WiggersUser stories are meant to be a placeholder for a conversation. This article dives into the differences between user stories and tickets, where stories came from and how recent trends are moving us away from conversations. It shows the impact this is having on product development and easy ways to improve collaboration through conversation and writing better stories.
By Kimberly Hendrick
© 2023 Created by Michael Levin.
Powered by
You need to be a member of Codetown to add comments!
Join Codetown