izumi.fundamentals.graphs.ui.ImagePanel.scala Maven / Gradle / Ivy
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package izumi.fundamentals.graphs.ui
import java.awt.event.{ActionEvent, ActionListener, MouseAdapter, MouseEvent}
import java.awt.image.BufferedImage
import java.awt.{Graphics, RenderingHints}
import java.io.File
import javax.swing.JPanel
class ImagePanel(image: BufferedImage, name: Option[String]) extends JPanel {
import javax.swing.{JMenuItem, JPopupMenu}
class PopupMenu() extends JPopupMenu {
val anItem = new JMenuItem("Save image")
add(anItem)
anItem.addActionListener(new ActionListener {
override def actionPerformed(e: ActionEvent): Unit = {
import javax.imageio.ImageIO
try {
import javax.swing.JFileChooser
val fc = new JFileChooser
fc.setSelectedFile(new File(s"${name.getOrElse("graph")}.png"))
val returnVal = fc.showSaveDialog(PopupMenu.this)
if (returnVal == JFileChooser.APPROVE_OPTION) {
val file = fc.getSelectedFile
if (!ImageIO.write(image, "png", file)) {
throw new RuntimeException(s"Cannot write file: $file")
}
}
} catch {
case t: Throwable =>
t.printStackTrace()
}
}
})
}
private val menu = new PopupMenu()
class PopClickListener extends MouseAdapter {
override def mousePressed(e: MouseEvent): Unit = mouseReleased(e)
override def mouseReleased(e: MouseEvent): Unit = {
if (e.isPopupTrigger) {
menu.show(e.getComponent, e.getX, e.getY)
}
}
}
this.addMouseListener(new PopClickListener)
override protected def paintComponent(g: Graphics): Unit = {
super.paintComponent(g)
g.drawImage(createScaledImage(this.image), 0, 0, null)
()
}
private def createScaledImage(bufferedImage: BufferedImage): BufferedImage = {
val image = new BufferedImage(getWidth, getHeight, BufferedImage.TYPE_INT_RGB)
val g2d = image.createGraphics
g2d.addRenderingHints(new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY))
g2d.drawImage(bufferedImage, 0, 0, getWidth, getHeight, null)
image
}
}