package org.simantics.maps.sg;

import java.awt.Color;
import java.awt.Composite;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;

public class MapAttributionNode extends MapInfoNode {

    private static final long serialVersionUID = 7994492218791569147L;

    @Override
    public void render(Graphics2D g2d) {
        if (!enabled)
            return;

        AffineTransform ot = g2d.getTransform();
        g2d.setTransform(new AffineTransform());

        Rectangle2D controlBounds = g2d.getClipBounds();
        if (controlBounds == null)
            return; // FIXME

        g2d.setFont(MapInfoConstants.getInfoFont());

        FontMetrics fm = g2d.getFontMetrics();
        Rectangle2D r = fm.getStringBounds(MapInfoConstants.ATTRIBUTION, g2d);

        double yOffsetFromBottom = getMapInfoNextY(g2d);
        double frameMaxX = controlBounds.getMaxX();
        double frameMaxY = controlBounds.getMaxY() - yOffsetFromBottom;
        int frameWidth = (int) Math.ceil(r.getWidth()) + MapInfoConstants.TEXT_HORIZONTAL_MARGIN * 2;
        int frameHeight = (int) Math.ceil(r.getHeight()) + MapInfoConstants.TEXT_VERTICAL_MARGIN * 2;

        Composite oc = g2d.getComposite();
        g2d.setComposite(MapInfoConstants.INFO_COMPOSITE);
        g2d.setStroke(MapInfoConstants.INFO_STROKE);

        g2d.setColor(MapInfoConstants.TEXT_BG_COLOR);
        rect.setFrameFromDiagonal(frameMaxX - frameWidth, frameMaxY - frameHeight, frameMaxX, frameMaxY);
        g2d.fill(rect);

        g2d.setColor(Color.BLACK);
        g2d.drawString(MapInfoConstants.ATTRIBUTION,
                (int) rect.getMinX() + MapInfoConstants.TEXT_HORIZONTAL_MARGIN,
                (int) frameMaxY - fm.getMaxDescent() - MapInfoConstants.TEXT_VERTICAL_MARGIN);

        g2d.setComposite(oc);
        g2d.setTransform(ot);

        setMapInfoNextY(g2d, yOffsetFromBottom + rect.getHeight() + MapInfoConstants.INFO_ROW_SPACING);
    }

}