Small fixes to make things faster

UI Set to native ui since it tends to look better
Add a menu bar

src/main/kotlin/nl/aegeedelft/watermarker/Main.kt

@@ -1,10 +1,7 @@
 package nl.aegeedelft.watermarker
 
 import org.intellij.lang.annotations.Language
-import java.awt.BorderLayout
+import java.awt.*
-import java.awt.Component
-import java.awt.Dimension
-import java.awt.Image
 import java.awt.image.BufferedImage
 import java.awt.image.RenderedImage
 import java.io.BufferedInputStream
@@ -31,10 +28,13 @@ val runbtn = JButton("Run!")
 
 val pbar = JProgressBar()
 
-val dlg = JDialog(jf, "Progress Dialog", true)
+val dlg = JDialog(jf, "Watermarking Images!", true)
 
 
 fun main(args: Array<String>) {
+    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName())
+
+
     var watermark: File? = null
     var outdir: File? = null
     var basedir: File? = null
@@ -51,12 +51,19 @@ fun main(args: Array<String>) {
 
 
     basepicker.currentDirectory = File(".")
-    basepicker.fileSelectionMode = JFileChooser.DIRECTORIES_ONLY
+    basepicker.fileSelectionMode = JFileChooser.FILES_AND_DIRECTORIES
     basepicker.isAcceptAllFileFilterUsed = false
+    basepicker.fileFilter = object : FileFilter() {
+        override fun accept(f: File): Boolean = f.isDirectory
+
+        override fun getDescription(): String = "Folders"
+
+    }
 
     outpicker.currentDirectory = File(".")
-    outpicker.fileSelectionMode = JFileChooser.DIRECTORIES_ONLY
+    outpicker.fileSelectionMode = JFileChooser.FILES_AND_DIRECTORIES
     outpicker.isAcceptAllFileFilterUsed = false
+    outpicker.fileFilter = basepicker.fileFilter
 
     wmpicker.currentDirectory = File(".")
     wmpicker.fileSelectionMode = JFileChooser.FILES_ONLY
@@ -110,7 +117,7 @@ fun main(args: Array<String>) {
             if (watermark != null && outdir != null && basedir != null) {
                 this.isEnabled = false
                 thread {
-                    doTheThing(basedir!!, outdir!!, watermark!!)
+                    watermarkImages(basedir!!, outdir!!, watermark!!)
                 }
             } else {
                 JOptionPane.showMessageDialog(
@@ -126,6 +133,34 @@ fun main(args: Array<String>) {
 
     jf.add(box, BorderLayout.CENTER)
 
+    val menuBar = JMenuBar()
+    val helpMenu = JMenu("Help")
+    val fileMenu = JMenu("File")
+    menuBar.add(fileMenu)
+    menuBar.add(helpMenu)
+    val infoItem = JMenuItem("About")
+    helpMenu.add(infoItem)
+    infoItem.addActionListener {
+        JOptionPane.showMessageDialog(
+            jf,
+            "WaterMarker\n" +
+                    "An app written by Julius de Jeu for AEGEE-Delft. \n" +
+                    "\n" +
+                    "Copyright (c) Julius de Jeu 2019",
+            "About",
+            JOptionPane.PLAIN_MESSAGE
+        )
+    }
+    fileMenu.add(JMenuItem("Exit").apply {
+        addActionListener {
+            System.exit(0)
+        }
+
+        accelerator = KeyStroke.getKeyStroke("ALT F4")
+    })
+
+    jf.jMenuBar = menuBar
+
     jf.setLocationRelativeTo(null)
     jf.defaultCloseOperation = JFrame.EXIT_ON_CLOSE
     jf.preferredSize = Dimension(300, 300)
@@ -136,9 +171,10 @@ fun main(args: Array<String>) {
     dlg.defaultCloseOperation = JDialog.DO_NOTHING_ON_CLOSE
     dlg.setSize(300, 75)
     dlg.setLocationRelativeTo(jf)
+    pbar.foreground = Color.GREEN.darker()
 }
 
-fun doTheThing(basedir: File, outdir: File, watermarkpath: File) {
+fun watermarkImages(basedir: File, outdir: File, watermarkpath: File) {
     val wmbase = ImageIO.read(watermarkpath)
 
     val scale = 3.6
@@ -190,7 +226,8 @@ fun doTheThing(basedir: File, outdir: File, watermarkpath: File) {
                     val iwp = writer.defaultWriteParam
                     iwp.compressionMode = ImageWriteParam.MODE_EXPLICIT
                     iwp.compressionQuality = 0.9f
-                    val imgOut = MemoryCacheImageOutputStream(File(outdir, f.nameWithoutExtension + ".jpg").outputStream())
+                    val imgOut =
+                        MemoryCacheImageOutputStream(File(outdir, f.nameWithoutExtension + ".jpg").outputStream())
                     writer.output = imgOut
                     val ending = IIOImage(combined, null, imageMetadata)
                     writer.write(null, ending, iwp)
@@ -205,7 +242,7 @@ fun doTheThing(basedir: File, outdir: File, watermarkpath: File) {
 
 }
 
-fun Component.forceToCenter(): Component = JPanel().apply { this.add(this@forceToCenter) }
+fun Component.forceToCenter(): JPanel = JPanel().apply { this.add(this@forceToCenter) }
 
 fun addWM(watermark: BufferedImage, image: BufferedImage): Image {
     val combined = BufferedImage(image.width, image.height, BufferedImage.TYPE_INT_RGB)
@@ -228,24 +265,3 @@ fun resize(img: BufferedImage, newW: Double, newH: Double): BufferedImage {
 
     return dimg
 }
-
-//class FrmPopUpInfo(message: String, image: Image) : JFrame() {
-//    init {
-//        this.title = message
-//        this.add(JLabel(ImageIcon(image)))
-//        this.background = Color.WHITE
-//        this.pack()
-//
-//        this.setLocationRelativeTo(null)
-//        obs.addObserver { _, _ ->
-//            java.util.Timer().schedule(timerTask {
-//
-//            }, 5 * 1000)
-//            this@FrmPopUpInfo.isVisible = false
-//
-//            this@FrmPopUpInfo.dispose()
-//        }
-//
-//        this.isVisible = true
-//    }
-//}