OverviewVisual.java

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 ** This demo file is part of yFiles for Java (Swing) 3.6.
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package complete.orgchart;

import com.yworks.yfiles.view.IRenderContext;
import com.yworks.yfiles.geometry.IRectangle;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.util.Objects;

/**
 * A visual that is meant to display the employee at far-away zoom levels.
 * It simply paints the abbreviated name inside the rectangle that is already drawn by the superclass.
*/
class OverviewVisual extends OrgChartVisual{

  private static final Font font = new Font("Dialog", Font.BOLD, 26);

  private String cachedName;
  private Rectangle2D cachedLineBounds;

  public OverviewVisual(Employee employee, IRectangle layout, boolean isFocused, boolean isHovered) {
    super(employee, layout, isFocused, isHovered);
  }

  @Override
  public void paintContent(final IRenderContext context, final Graphics2D g) {
    final AffineTransform oldTransform = g.getTransform();
    final Paint oldPaint = g.getPaint();
    final Font oldFont = g.getFont();
    try {
      // draw the abbreviated first name and the last name in the center.
      String displayName = getEmployee().getFirstName().substring(0, 1) + ". " + getEmployee().getName();
      if (!Objects.equals(displayName, cachedName)) {
        cachedName = displayName;
        cachedLineBounds = getLineBounds(displayName, font);
      }
      Rectangle2D bounds = cachedLineBounds;
      double textWidth = bounds.getWidth();
      double textHeight = bounds.getHeight();
      g.translate(125 - textWidth/2, 50 + textHeight/4); // no fancy calculations here, this a fitting enough approximation to center the drawn text.
      g.setPaint(Color.BLACK);
      g.setFont(font);
      g.drawString(displayName, 0, 0);

    } finally {
      g.setTransform(oldTransform);
      g.setPaint(oldPaint);
      g.setFont(oldFont);
    }
  }
}