最近跟JList走的比較近.聽說她最近離婚了..唉...可惜啊.可惜.
聽JList說 是因為她脾氣比較暴躁..不知道什么時候 該開 什么時候該關.
說實話..我很喜歡替美女解決煩惱,特別像JList這么漂亮又乖巧得..
那么.咱們來用一個開關..也許能起到些作用....
當然.不會讓滑塊瞬間轉移,而是優美得滑過去..這樣才配的上美麗的JList.
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版權聲明 版權所有 @chensiyu
引用請注明來源
本文由 陳思羽 于 2011年9月2號 出品..
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目前還不太完美..有時間在整下.
package swing;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.RoundRectangle2D;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JToggleButton;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
/**
*
* @author chensiyu
* @createDate 2011/9/2
* @address www.tkk7.com/chensiyu04
*
*/
public class SwitchButton extends JToggleButton implements ActionListener {
private static final int ARCNUMBER = 35;
private int currentResolution = 50;
private long cycleStart;
private Timer timer = null;
private final int MOVE_TIME = 2000;
private int moveMinX;
private int moveMaxX;
private int buttonX;
private ActionListener moveActionListener = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
startTimer(currentResolution);
}
};
public SwitchButton() {
setBorder(null);
addActionListener(moveActionListener);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
Color oldColor = g2.getColor();
g2.setColor(Color.WHITE);
g2.fillRect(0, 0, getWidth(), getHeight());
g2.setColor(oldColor);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Shape backgroundShape = new RoundRectangle2D.Float(1, 1, getWidth() - 2, getHeight() - 2, ARCNUMBER, ARCNUMBER);
boolean selected = getModel().isSelected();
//fill shape
Paint paint = null;
if (selected) {
paint = new GradientPaint(0, 0, new Color(45, 106, 169), 0, getHeight(), new Color(135, 183, 245));
} else {
paint = new GradientPaint(0, 0, new Color(144, 144, 144), 0, getHeight(), new Color(244, 244, 244));
}
g2.setPaint(paint);
g2.fill(backgroundShape);
//draw shape bounds
g2.setColor(Color.DARK_GRAY);
g2.draw(backgroundShape);
JLabel onLabel = new JLabel("ON");
JLabel offLabel = new JLabel("OFF");
Dimension labelSize;
//draw text. off/on
if (selected) {
oldColor = g2.getColor();
g2.setColor(Color.WHITE);
labelSize = onLabel.getPreferredSize();
g2.drawString(onLabel.getText(), getWidth() / 2 / 2 - labelSize.width / 2, getHeight() / 2 + labelSize.height / 2);
g2.setColor(oldColor);
} else {
oldColor = g2.getColor();
g2.setColor(Color.BLACK);
labelSize = offLabel.getPreferredSize();
g2.drawString(offLabel.getText(), getWidth() / 2 + labelSize.width / 2, getHeight() / 2 + labelSize.height / 2);
g2.setColor(oldColor);
}
//draw button
int buttonY = 0;
int buttonWidth = getWidth() / 2;
int buttonHeight = getHeight();
Shape buttonShape = new RoundRectangle2D.Float(buttonX, buttonY, buttonWidth, buttonHeight, ARCNUMBER, ARCNUMBER);
paint = new GradientPaint(0, 0, new Color(244, 244, 244), 0, getHeight(), new Color(144, 144, 144));
g2.setPaint(paint);
g2.fill(buttonShape);
g2.setColor(new Color(140, 140, 140));
g2.draw(buttonShape);
}
public static void main(String[] args) {
SwitchButton button = new SwitchButton();
button.setBounds(60, 10, 100, 30);
JPanel mainPane = new JPanel();
mainPane.setOpaque(true);
mainPane.setBackground(Color.WHITE);
mainPane.setLayout(null);
mainPane.add(button);
final JFrame frame = new JFrame();
frame.setTitle("SwitchButton Demo");
frame.setLayout(new BorderLayout());
frame.getContentPane().add(mainPane, BorderLayout.CENTER);
frame.setSize(233, 80);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
frame.setVisible(true);
}
});
}
@Override
public void actionPerformed(ActionEvent e) {
long currentTime = System.nanoTime() / 1000000;
long totalTime = currentTime - cycleStart;
if (totalTime > MOVE_TIME) {
cycleStart = currentTime;
}
float fraction = (float) totalTime / MOVE_TIME;
fraction = Math.min(1.0f, fraction);
fraction = 1 - Math.abs(1 - (2 * fraction));
animate(fraction);
}
public void animate(float fraction) {
float animationFactor = (float) Math.sin(fraction * (float) Math.PI / 2);
animationFactor = Math.min(animationFactor, 1.0f);
animationFactor = Math.max(animationFactor, 0.0f);
buttonX = moveMinX + (int) (.5f + animationFactor * (float) (moveMaxX - moveMinX));
if (isSelected()) {
if (buttonX >= moveMaxX) {
timer.stop();
timer.setInitialDelay(100);
buttonX = getWidth() / 2 - 1;
}
} else {
if (buttonX - 1 <= moveMaxX) {
timer.stop();
timer.setInitialDelay(100);
buttonX = 0;
}
}
repaint();
}
private void startTimer(int resolution) {
if (timer == null) {
timer = new Timer(resolution, this);
}
if (!timer.isRunning()) {
if (isSelected()) {
moveMinX = 0;
moveMaxX = getWidth() / 2 - 1;
} else {
moveMinX = getWidth() / 2 - 1;
moveMaxX = 0;
}
timer.start();
}
}
}