/*
* Copyright (c) 2005, romain guy (romain.guy@jext.org) and craig wickesser (craig@codecraig.com) and henry story
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* * Neither the name of the <ORGANIZATION> nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.jidesoft.swing;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
public class InfiniteProgressPanel extends JComponent implements ActionListener {
private static final int DEFAULT_NUMBER_OF_BARS = 12;
private int numBars;
private double dScale = 1.2d;
private Area[] bars;
private Rectangle barsBounds = null;
private Rectangle barsScreenBounds = null;
private AffineTransform centerAndScaleTransform = null;
private Timer timer = new Timer(1000 / 16, this);
private Color[] colors = null;
private int colorOffset = 0;
private boolean tempHide = false;
public InfiniteProgressPanel() {
this(1);
}
public InfiniteProgressPanel(double ratio) {
this.numBars = DEFAULT_NUMBER_OF_BARS;
colors = new Color[numBars * 2];
// build bars
bars = buildTicker(numBars, ratio);
// calculate bars bounding rectangle
barsBounds = new Rectangle();
for (Area bar : bars) {
barsBounds = barsBounds.union(bar.getBounds());
}
// create colors
for (int i = 0; i < bars.length; i++) {
int channel = 224 - 128 / (i + 1);
colors[i] = new Color(channel, channel, channel);
colors[numBars + i] = colors[i];
}
// set cursor
//setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
// set opaque
setOpaque(true);
}
/**
* Called to animate the rotation of the bar's colors
*/
public void actionPerformed(ActionEvent e) {
// rotate colors
if (colorOffset == (numBars - 1)) {
colorOffset = 0;
}
else {
colorOffset++;
}
// repaint
if (barsScreenBounds != null) {
repaint(barsScreenBounds);
}
else {
repaint();
}
}
/**
* Show/Hide the pane, starting and stopping the animation as you go
*/
@Override
public void setVisible(boolean i_bIsVisible) {
setOpaque(false);
// capture
if (i_bIsVisible) {
// start anim
timer.start();
}
else {
// stop anim
timer.stop();
}
super.setVisible(i_bIsVisible);
}
/**
* Recalc bars based on changes in size
*/
@Override
public void setBounds(int x, int y, int width, int height) {
super.setBounds(x, y, width, height);
// update centering transform
centerAndScaleTransform = new AffineTransform();
centerAndScaleTransform.translate((double) getWidth() / 2d, (double) getHeight() / 2d);
centerAndScaleTransform.scale(dScale, dScale);
// calc new bars bounds
if (barsBounds != null) {
Area oBounds = new Area(barsBounds);
oBounds.transform(centerAndScaleTransform);
barsScreenBounds = oBounds.getBounds();
}
}
/**
* paint background dimmed and bars over top
*/
@Override
protected void paintComponent(Graphics g) {
if (!tempHide) {
Rectangle oClip = g.getClipBounds();
if (isOpaque()) {
g.setColor(getBackground());
g.fillRect(oClip.x, oClip.y, oClip.width, oClip.height);
}
// move to center
Graphics2D g2 = (Graphics2D) g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.transform(centerAndScaleTransform);
// draw ticker
for (int i = 0; i < bars.length; i++) {
g2.setColor(colors[i + colorOffset]);
g2.fill(bars[i]);
}
}
}
/*
* Builds the circular shape and returns the result as an array of <code>Area</code>. Each <code>Area</code> is one of the bars composing the shape.
*/
private static Area[] buildTicker(int i_iBarCount, double ratio) {
Area[] ticker = new Area[i_iBarCount];
Point2D.Double center = new Point2D.Double(0, 0);
double fixedAngle = 2.0 * Math.PI / ((double) i_iBarCount);
for (double i = 0.0; i < (double) i_iBarCount; i++) {
Area primitive = buildPrimitive(ratio);
AffineTransform toCenter = AffineTransform.getTranslateInstance(center.getX(), center.getY());
AffineTransform toBorder = AffineTransform.getTranslateInstance(2.0, -0.4);
AffineTransform toCircle = AffineTransform.getRotateInstance(-i * fixedAngle, center.getX(), center.getY());
AffineTransform toWheel = new AffineTransform();
toWheel.concatenate(toCenter);
toWheel.concatenate(toBorder);
primitive.transform(toWheel);
primitive.transform(toCircle);
ticker[(int) i] = primitive;
}
return ticker;
}
/*
* Builds a bar.
*/
private static Area buildPrimitive(double ratio) {
// Rectangle2D.Double body = new Rectangle2D.Double(6, 0, 30, 12);
// Ellipse2D.Double head = new Ellipse2D.Double(0, 0, 12, 12);
// Ellipse2D.Double tail = new Ellipse2D.Double(30, 0, 12, 12);
// Rectangle2D.Double body = new Rectangle2D.Double(3, 0, 15, 6);
// Ellipse2D.Double head = new Ellipse2D.Double(0, 0, 6, 6);
// Ellipse2D.Double tail = new Ellipse2D.Double(15, 0, 6, 6);
// Rectangle2D.Double body = new Rectangle2D.Double(2, 0, 10, 4);
// Ellipse2D.Double head = new Ellipse2D.Double(0, 0, 4, 4);
// Ellipse2D.Double tail = new Ellipse2D.Double(10, 0, 4, 4);
Rectangle2D.Double body = new Rectangle2D.Double(2 * ratio, 0, 4 * ratio, ratio);
// Ellipse2D.Double head = new Ellipse2D.Double(0, 0, 2, 2);
// Ellipse2D.Double tail = new Ellipse2D.Double(5, 0, 2, 2);
// tick.add(new Area(head));
// tick.add(new Area(tail));
//
return new Area(body);
}
public void start() {
setVisible(true);
}
public void stop() {
setVisible(false);
}
}