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/*
* 11/14/2003
*
* SplashScreen.java - A "splash screen" to display while your Java program
* is loading.
* Copyright (C) 2003 Robert Futrell
* http://fifesoft.com/rtext
* Licensed under a modified BSD license.
* See the included license file for details.
*/
package org.fife.ui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.ComponentOrientation;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.net.URL;
import java.util.Map;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JWindow;
/**
* A window to display while your Swing application is loading; it behaves
* just like a "splash screen."
*
* @author Robert Futrell
* @version 0.6
*/
public class SplashScreen extends JWindow {
private static final long serialVersionUID = 1L;
private JLabel imageLabel; // Forced repaint needed on OS X
private ProgressBar progressBar;
private static final int statusBarHeight = 25;
/**
* Creates a new SplashScreen with default color scheme.
*
* @param splashScreenPath Path to an image file that a
* ClassLoader will understand.
* @param statusText The status text to initially display.
*/
public SplashScreen(String splashScreenPath, String statusText) {
this(splashScreenPath, statusText, new Color(190,190,190),
new Color(44,70,154), new Color(75,141,199), Color.WHITE);
}
/**
* Creates a new SplashScreen.
*
* @param splashScreenPath Path to an image file that a
* ClassLoader will understand.
* @param statusText The status text to initially display.
* @param statusBackground The color to use as the status bar's background.
* @param foreground1 The color to use for the first part of the
* gradient fill of the status bar.
* @param foreground2 The color to use for the second part of the
* gradient fill of the status bar.
* @param textColor The color to use for the status text.
*/
public SplashScreen(String splashScreenPath, String statusText,
Color statusBackground, Color foreground1,
Color foreground2, Color textColor) {
JPanel contentPane = new JPanel(new BorderLayout());
// Get the splash screen image.
ClassLoader cl = this.getClass().getClassLoader();
URL imageURL = cl.getResource(splashScreenPath);
ImageIcon image = new ImageIcon(imageURL);
// Create a panel for the splash screen image.
imageLabel = new JLabel(image);
contentPane.add(imageLabel);
// Create the "progress bar" at the bottom.
progressBar = new ProgressBar(image.getIconWidth(),
statusText, statusBackground,
foreground1, foreground2, textColor);
contentPane.add(progressBar, BorderLayout.SOUTH);
// Combine everything and get ready to go.
setContentPane(contentPane);
ComponentOrientation orientation = ComponentOrientation.
getOrientation(getLocale());
applyComponentOrientation(orientation);
this.pack();
setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
this.setLocationRelativeTo(null); // Center on the screen.
}
/**
* Updates the percent complete bar and the associated status text.
*
* @param statusText The new status text to display.
* @param percentComplete The new percentage to have filled in the percent
* complete bar.
*/
public void updateStatus(String statusText, int percentComplete) {
progressBar.update(statusText, percentComplete);
// Force a repaint since we (should be) on the EDT.
// Note that repainting the imageLabel only seems necessary
// on OS X (and possibly Linux); on Windows it is not needed.
progressBar.paintImmediately(0,0,
progressBar.getWidth(),progressBar.getHeight());
imageLabel.paintImmediately(0,0,
imageLabel.getWidth(), imageLabel.getHeight());
}
/**
* The "progress bar" part of the splash screen. This component is
* somewhat configurable; you can:
*
*
Configure the background color
*
Configure the progress "fill in" color, even make it a
* gradient
*
Set the status text and its color
*
*/
private static class ProgressBar extends JPanel {
private static final long serialVersionUID = 1L;
private Dimension preferredSize;
private Color textColor;
private GradientPaint paint;
private int percentComplete;
private String text;
private int textX, textY;
ProgressBar(int width, String initialText, Color background,
Color foreground1, Color foreground2,
Color textColor) {
setBackground(background);
preferredSize = new Dimension(width, statusBarHeight);
paint = new GradientPaint(0.0f,0.0f, foreground1,
0.0f,statusBarHeight, foreground2);
this.textColor = textColor;
update(text, percentComplete);
}
public Dimension getPreferredSize() {
return preferredSize;
}
public void paintComponent(Graphics g) {
// Fill in background.
super.paintComponent(g);
// Paint the filled-in portion of the status bar.
int width = getWidth();
Graphics2D g2d = (Graphics2D)g;
Paint oldPaint = g2d.getPaint();
g2d.setPaint(paint);
int filledWidth = width*percentComplete/100;
int x = getComponentOrientation().isLeftToRight() ?
0 : getWidth()-filledWidth;
g2d.fillRect(x,0, filledWidth,getHeight());
g2d.setPaint(oldPaint);
// Paint the status text.
if (text!=null) {
// Try to use the rendering hint set that is "native".
Map old = UIUtil.setNativeRenderingHints(g2d);
g2d.setColor(textColor);
g2d.drawString(text, textX,textY);
if (old!=null) {
g2d.addRenderingHints(old);
}
}
}
void update(String text, int percentComplete) {
this.text = text;
if (text!=null) {
FontMetrics fm = getFontMetrics(getFont());
if (fm!=null) {
int stringLength = fm.charsWidth(
text.toCharArray(), 0,text.length());
textX = (getWidth()-stringLength)/2;
textY = (statusBarHeight + fm.getAscent())/2;
}
}
this.percentComplete = percentComplete;
repaint();
}
}
}
