PNG on-the-fly image generation

GenImage.scala

import java.io.File
import javax.imageio.ImageIO
import java.awt.image.BufferedImage
import java.awt.geom._
import java.awt.Color
import java.awt.Font
import java.awt.Graphics2D
import java.util.Date

object Screen {

  def make(clickX: Int, clickY: Int, message: String): BufferedImage = {
    val width = 800
    val height = 480
    val image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB)
    val graphics = image.createGraphics()

    graphics.setPaint(Color.darkGray)
    graphics.fill(new Rectangle2D.Float(0, 0, width, height))

    graphics.setPaint(Color.black)
    graphics.fill(new Rectangle2D.Float(10, 10, width - 20, height - 20))

    graphics.setPaint(Color.orange)
    graphics.draw(new Line2D.Float(clickX - 10, clickY, clickX + 10, clickY))
    graphics.draw(new Line2D.Float(clickX, clickY - 10, clickX, clickY + 10))

    graphics.setPaint(Color.white)
    graphics.setFont(new Font("San-Serif", Font.BOLD, 20))
    graphics.drawString(message, (width / 2) - 100, height / 2)
    graphics.drawString(new Date().toString, 20, 440)
    graphics.dispose()
    image
  }
}

val message = if (args.size > 0) args(0) else "This is a test."

val clickX = 670
val clickY = 45

ImageIO.write(Screen.make(clickX, clickY, message), "PNG", new File("test.png"))