Vertical Alignment on ScreenAnnotation

[BraydenJames]

So I have a ScreenRelativeAnnotation object and for the project I need to set a certain size for it instead of just letting it wrap the text. Which works fine except for one thing, the text is no longer centered vertically, and I can't for the life of me figure out how to fix that?

Here's a simple example:

import gov.nasa.worldwind.BasicModel;
import gov.nasa.worldwind.awt.WorldWindowGLCanvas;
import gov.nasa.worldwind.layers.AnnotationLayer;
import gov.nasa.worldwind.render.ScreenRelativeAnnotation;

import java.awt.Dimension;

import javax.swing.JFrame;

public class RelativeAnnotationTest {

	public static void main(String[] args) {

		JFrame frame = new JFrame();

		WorldWindowGLCanvas worldWindow = new WorldWindowGLCanvas();
		worldWindow.setPreferredSize(new Dimension(600, 600));
		worldWindow.setModel(new BasicModel());

		AnnotationLayer annotationLayer = new AnnotationLayer();
		worldWindow.getModel().getLayers().add(annotationLayer);

		{
			ScreenRelativeAnnotation annotation = new ScreenRelativeAnnotation("Tall", 0, .5);
			annotation.getAttributes().setSize(new Dimension(100, 100));
			annotationLayer.addAnnotation(annotation);
		}

		{
			ScreenRelativeAnnotation annotation = new ScreenRelativeAnnotation("Normal", 1, .5);
			annotationLayer.addAnnotation(annotation);
		}

		frame.add(worldWindow);
		frame.pack();
		frame.setVisible(true);
	}

}

If you run it you can see how normally the annotation wraps the text so the text is centered (right side), but when I set a custom hard coded height (left side) the text is top aligned. Any help?

[BraydenJames]

Been digging through the source code of AbstractAnnotation and MultiLineTextRenderer and it's not looking good... I don't think there is anything that affects the y location where the text is being drawn. Bleh. Might have to add this myself! Still open to suggestions!

[BraydenJames]

Alright well for future reference in case anybody else runs into this, I ended up having to implement a vertical alignment myself in the AbstractAnnotation and MultiLineRenderer classes to get this to work. I'm using HTML for my text so I only implemented it in the drawHTML call, not the drawPlainText call. But yeah.

[heidtmare]

not exactly answering your question, but here is an info box i implemented on a previous application.

PHP Code:

package REMOVED;

import gov.nasa.worldwind.avlist.AVKey;
import gov.nasa.worldwind.layers.AnnotationLayer;
import gov.nasa.worldwind.render.AnnotationAttributes;
import gov.nasa.worldwind.render.DrawContext;
import gov.nasa.worldwind.render.ScreenAnnotation;
import java.awt.Color;
import java.awt.Insets;
import java.awt.Point;

/**
 *
 * @author heidtmare
 */
public class InformationBoxLayer extends AnnotationLayer {
    
    private final ScreenAnnotation sa;

    /**
     *
     */
    public InformationBoxLayer() {
        setName("Information Box");
        AnnotationAttributes attrs = new AnnotationAttributes();
        attrs.setAdjustWidthToText(AVKey.SIZE_FIT_TEXT);
        attrs.setBackgroundColor(new Color(0f, 0f, 0f, .5f));
        attrs.setBorderWidth(0);
        attrs.setCornerRadius(0);
        attrs.setInsets(new Insets(8, 8, 8, 8));
        attrs.setTextAlign(AVKey.CENTER);
        attrs.setTextColor(Color.WHITE);
        
        sa = new ScreenAnnotation("", new Point(0, 0), attrs);
        this.addAnnotation(sa);
        this.setPickEnabled(false);
    }

    /**
     *
     * @param info
     */
    public void setInformation(String info) {
        sa.setText(info);
    }

    /**
     * 
     * @param dc
     */
    @Override
    protected void doRender(DrawContext dc) {
        if (!sa.getText().isEmpty()) {
            Point centerScreenPoint = dc.getViewportCenterScreenPoint();
            sa.setScreenPoint(new Point(centerScreenPoint.x, 20));
            super.doRender(dc);
        }
    }
}