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/* Copyright by Barry G. Becker, 2017 - 2019. Licensed under MIT License: http://www.opensource.org/licenses/MIT */
package com.barrybecker4.ui.util
import com.barrybecker4.common.app.ClassLoaderSingleton
import com.barrybecker4.ui.components.SplashScreen
import com.barrybecker4.ui.file.FileChooserUtil
import com.barrybecker4.ui.themes.BarryTheme
import javax.swing._
import javax.swing.plaf.metal.MetalLookAndFeel
import java.awt._
import java.awt.event.WindowAdapter
import java.awt.event.WindowEvent
import java.awt.image.{BufferedImage, ImageObserver}
import java.io.File
import java.net.URL
/**
* This class implements a number of static utility functions that are useful when creating UIs.
* I used to support running as applet or webstart separately from running as an application, but
* now I just run the applet as an application.
* @author Barry Becker
*/
object GUIUtil {
/** Some other interesting fonts: "Ænigma Scrawl 4 BRK"; "Nyala"; "Raavi";
* Verdana is nice, but it does not support japanese or vietnamese character.
* Only Serif and SansSerif seem to support everything.
*/
val DEFAULT_FONT_FAMILY = "SansSerif" // NON-NLS
/** Set the ui look and feel to my very own. */
def setCustomLookAndFeel(): Unit = {
val theme = new BarryTheme
MetalLookAndFeel.setCurrentTheme(theme)
// for java 1.4 and later
//JFrame.setDefaultLookAndFeelDecorated(true);
//JDialog.setDefaultLookAndFeelDecorated(true);
try { //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); // for windows
//java look and feel is customizable with themes
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel")
//UIManager.setLookAndFeel(lnf);
//GTK look and feel for Linux.
//UIManager.setLookAndFeel( "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" );
// MacIntosh Look and feel
// there is supposed to be some trick to getting this to wowk, but I can't find it right now.
//UIManager.setLookAndFeel( new it.unitn.ing.swing.plaf.macos.MacOSLookAndFeel() );
//UIManager.setLookAndFeel( new WindowsLookAndFeel() );
// turn on auditory cues.
// @@ can't do this under linux until I upgrade java or get the right sound card driver.
UIManager.put("AuditoryCues.playList", UIManager.get("AuditoryCues.allAuditoryCues"))
theme.setUIManagerProperties()
} catch {
case e: Exception => e.printStackTrace()
}
}
/** @return the image icon given the full path to the image.*/
def getIcon(sPath: String): ImageIcon = getIcon(sPath, failIfNotFound = true)
def getIcon(sPath: String, failIfNotFound: Boolean): ImageIcon = {
val url: URL = ClassLoaderSingleton.getClassLoader.getResource(sPath)
// if we can't load it using the class loader, try as a file
val icon: ImageIcon =
if (url != null) new ImageIcon(url)
else if (new File(sPath).exists) new ImageIcon(sPath)
else null
if (icon == null && failIfNotFound)
throw new IllegalArgumentException("Invalid file or url path:" + sPath)
icon
}
/** Load a buffered image from a file or resource.
* @return loaded image or null if not found.
*/
def getBufferedImage(path: String, imageObserver: ImageObserver): BufferedImage = {
val img: ImageIcon = GUIUtil.getIcon(path, failIfNotFound = false)
if (img == null)
throw new IllegalStateException("No image found for " + path)
if (img.getIconWidth == 0)
throw new IllegalStateException("image has 0 width")
ImageUtil.makeBufferedImage(img.getImage, imageObserver)
}
/** Load a buffered image from a file or resource. Non-blocking.
* If you want an ImageObserver (i.e. component to repaint when done, use the signature that allows you
* to pass in the ImageObserver. Also consider the blocking version in bb4-imageproc.
* @return loaded image or null if not found. Can be null while loading.
*/
def getBufferedImage(path: String): BufferedImage =
getBufferedImage(path, null)
/** Displays a splash screen while the application is busy starting up.
* @return the window containing the splash screen image.
*/
def showSplashScreen(waitMillis: Int, imagePath: String): JWindow = {
// show a splash screen initially (if we are running through web start)
// so the user knows something is happening
var splash: ImageIcon = null
val url = ClassLoaderSingleton.getClassLoader.getResource(imagePath)
if (url == null) { // use a default
splash = new ImageIcon(new BufferedImage(300, 300, BufferedImage.TYPE_INT_RGB))
}
else splash = new ImageIcon(url)
new SplashScreen(splash, null, waitMillis)
}
/** This method is useful for turning Applets into applications.
* For thread safety, this method should be invoked from the event-dispatching thread.
* @param applet the applet to show
* @return frame containing the applet.
* @deprecated Applet is going away in future versions of Java
*/
def showApplet(applet: JApplet): JFrame = {
val baseFrame = new JFrame
baseFrame.addWindowListener(new WindowAdapter() {
override def windowClosed(e: WindowEvent): Unit = {
System.exit(0)
}
})
baseFrame.setContentPane(applet.getContentPane)
val d = Toolkit.getDefaultToolkit.getScreenSize
val height = (2.0 * d.getHeight / 3.0).toInt
val width = Math.min(height * 1.5, 2.0 * d.getWidth / 3).toInt
baseFrame.setLocation((d.width - width) >> 2, (d.height - height) >> 2)
val dim = applet.getContentPane.getSize
if (dim.width == 0) baseFrame.setSize(width, height)
else baseFrame.setSize(dim)
applet.init()
baseFrame.setTitle(applet.getName)
baseFrame.repaint()
baseFrame.setVisible(true)
applet.start()
baseFrame
}
/** Paint with specified texture. */
def paintComponentWithTexture(texture: ImageIcon, c: Component, g: Graphics): Unit = {
if (texture == null) {
println("warning no texture to tile with")
return
}
val size = c.getSize
val textureWidth = texture.getIconWidth
val textureHeight = texture.getIconHeight
assert(textureWidth > 0 && textureHeight > 0)
g.setColor(c.getBackground)
g.fillRect(0, 0, size.width, size.height)
var row = 0
while (row < size.height) {
var col = 0
while (col < size.width) {
texture.paintIcon(c, g, col, row)
col += textureWidth
}
row += textureHeight
}
}
def saveSnapshot(component: JComponent, directory: String): Unit = {
val chooser = FileChooserUtil.getFileChooser
chooser.setCurrentDirectory(new File(directory))
val state = chooser.showSaveDialog(null)
val file = chooser.getSelectedFile
if (file != null && state == JFileChooser.APPROVE_OPTION) {
val img = getSnapshot(component)
ImageUtil.saveAsImage(file.getAbsolutePath, img, ImageUtil.ImageType.PNG)
}
}
def getSnapshot(component: JComponent): BufferedImage = {
val img = component.createImage(component.getWidth, component.getHeight).asInstanceOf[BufferedImage]
component.paint(img.createGraphics)
img
}
/** Get the suffix of a file name.
* The part after the "." typically used by FileFilters.
* @return the file suffix.
*/
def getFileSuffix(f: File): String = {
val s = f.getPath
var suffix: String = null
val i = s.lastIndexOf('.')
if (i > 0 && i < s.length - 1) suffix = s.substring(i + 1).toLowerCase
suffix
}
}
