B4J Question Can i create/make use of JPanel Objects in a B4J App?

[DonManfred]

As the Subject already tell what i want; i want to use a JPanel-Object (created by an 3rdparty library and a wrap from me for this library) in a B4J Panel.
Is this possible? Any Example code available?

The java Examplecode is using this import basically. Plus the library-imports.

import java.awt.Color;
import javax.swing.JPanel;

Additional: Which imports (additionaljar) do i need for the two above?

 

[stevel05]

You can use the javafx swingnode - https://docs.oracle.com/javase/8/javafx/api/javafx/embed/swing/SwingNode.html, I don't have a small example to share, but I have used it in the past. It's not too difficult.

You don't need any additional jars, they are part of the java standard packages.

 

[stevel05]

Looking a little harder I did wrap it (with my usual JavaObject method) if it helps (you'll have to excuse the spaghetti code, it wasn't meant for publication as it was just a test).

 

[DonManfred]

Looking a little harder I did wrap it (with my usual JavaObject method) if it helps.

Indeed it helps. Looking at the Example and the SwingNode class i would interpret it as an YES answer to my question in #1
In fact i´ll start doing some wrapping and then lets see further into the JPanel. Now that i know it should be possible i can invest some time into the Library i want to use.
It is this one i plan to Implement (at least partially).

JFreeChart

The official home page of the JFreeChart project.

www.jfree.org

But under the hood the Chart must then added to an JPanel. Resp. the chartobject is a JPanel like Object.
So i need to know how to add this JPanel. Your code will surely help me in this step! Thank you for it.

I´m positive following questions will come

 

[stevel05]

That is on my interesting Java libraries list. I haven't had a need for it so haven't done anything about it. I'd be interested to find out how you get on with the wrap.

 

[DonManfred]

That is on my interesting Java libraries list.

I found it some day ago but lack of example-sources i did not look deeper.

Today i buyed the Documentation PDF and the provided Java Example Codes... That´s the reason for this thread.

   public static JPanel createDemoPanel() {

        // create plot...
        NumberAxis xAxis = new NumberAxis("X");
        xAxis.setAutoRangeIncludesZero(false);
        NumberAxis yAxis = new NumberAxis("Y");
        yAxis.setAutoRangeIncludesZero(false);

        XYSplineRenderer renderer1 = new XYSplineRenderer();
        renderer1.setDefaultShapesVisible(false);
        XYPlot plot = new XYPlot(createSampleData(), xAxis, yAxis, renderer1);
        plot.setBackgroundPaint(Color.LIGHT_GRAY);
        plot.setDomainGridlinePaint(Color.WHITE);
        plot.setRangeGridlinePaint(Color.WHITE);
        plot.setAxisOffset(new RectangleInsets(4, 4, 4, 4));

        // create and return the chart panel...
        JFreeChart chart = new JFreeChart("XYSplineRenderer",
                JFreeChart.DEFAULT_TITLE_FONT, plot, true);
        ChartUtils.applyCurrentTheme(chart);
        ChartPanel chartPanel = new ChartPanel(chart);
        return chartPanel;
    }

ChartPanel seems to extend JPanel as the return Object is declared as JPanel.

 

[DonManfred]

I'd be interested to find out how you get on with the wrap.

I´ve created a followup beta thread for the first version of the wrapper.

Beta jFreeChart wrapper (starting with one Charttype)

As a followup to a previously posted question i now started to do a wrap on jFreeChart (totally incomplete! :D) just to check if i get this thing working. It is using java awt and in the wrapper are a lot of old code i wrote in the past and never published. Feel free to have a look and...

www.b4x.com