Alternative.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.gui.flowchart;
 
import de.lathanda.eos.baseparser.AlternativeUnit;
import de.lathanda.eos.gui.diagram.Drawing;
import de.lathanda.eos.gui.text.Text;
 
public class Alternative extends ConnectedUnit {
    private final Sequence A; // true
    private final Sequence B; // false
    private final Diamond diam;
    private final String yes = Text.LABEL.getString("Yes");
    private final String no = Text.LABEL.getString("No");
    private float yesx;
    private float yesy;
    private float nox;
    private float noy;
 
    private float ABbeginY;
    private float AendY;
    private float BendY;
    private float AcenterX;
    private float BcenterX;
 
    Alternative(AlternativeUnit au) {
        A = new Sequence(au.getThen());
        B = new Sequence(au.getElse());
        diam = new Diamond(au.getLabel());
        font = STANDARD_FONT;
    }
 
    @Override
    public void layoutUnit(Drawing d) {
        A.layout(d);
        B.layout(d);
        diam.layout(d);
 
        float sideWidth = Math.max(A.getWidth(), B.getWidth());
        width = Math.max(sideWidth * 2 + SPACEX, diam.getWidth() + sideWidth);
 
        diam.centerX(width);
 
        ABbeginY = diam.getHeight() + SPACE;
        A.centerX(sideWidth);
        B.setOffsetX(width - (sideWidth - B.getWidth()) / 2 - B.getWidth());
        AcenterX = A.getOffsetX() + A.getWidth() / 2;
        BcenterX = B.getOffsetX() + B.getWidth() / 2;
        A.setOffsetY(ABbeginY);
        B.setOffsetY(ABbeginY);
        AendY = A.getHeight() + ABbeginY;
        BendY = B.getHeight() + ABbeginY;
 
        yesx = diam.getX(0) - d.stringWidth(yes) - BORDER;
        yesy = diam.getY(0) - BORDER;
        nox = diam.getX(2) + BORDER;
        noy = diam.getY(2) - BORDER;
        height = diam.getHeight() + SPACE + Math.max(A.getHeight(), B.getHeight()) + SPACE;
    }
 
    @Override
    public void drawUnit(Drawing d) {
        // condition diamond
        diam.draw(d);
 
        // left side arrow
        d.drawString(yes, yesx, yesy);
        d.drawLine(diam.getX(0), diam.getY(0), AcenterX, diam.getY(0));
        d.drawArrow(AcenterX, diam.getY(0), AcenterX, ABbeginY, 2);
 
        // right side arrow
        d.drawString(no, nox, noy);
        d.drawLine(diam.getX(2), diam.getY(2), BcenterX, diam.getY(2));
        d.drawArrow(BcenterX, diam.getY(2), BcenterX, ABbeginY, 2);
 
        // left and right side
        A.draw(d);
        B.draw(d);
 
        // rejoin line (arrow is added by surrounding structure)
        d.drawLine(AcenterX, AendY, AcenterX, height);
        d.drawLine(BcenterX, BendY, BcenterX, height);
        d.drawLine(AcenterX, height, BcenterX, height);
    }
}