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| package swing;
import java.awt.event.MouseListener;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.OverlayLayout;
import javax.swing.plaf.basic.BasicSliderUI;
public class JRangeSliderPanel extends JPanel {
protected JSlider lowerSlider;
protected JSlider upperSlider;
public JRangeSliderPanel(int orientation, int min, int max, int lowerValue, int upperValue) {
super();
this.initcomponents(orientation, min, max, lowerValue, upperValue);
this.initListeners();
}
protected void initcomponents(int orientation, int min, int max, int lowerValue, int upperValue) {
// Layout
OverlayLayout overlay = new OverlayLayout(this);
this.setLayout(overlay);
this.lowerSlider = new JSlider(orientation, min, max, lowerValue);
this.upperSlider = new JSlider(orientation, min, max, upperValue);
this.add(this.lowerSlider);
this.add(this.upperSlider);
this.lowerSlider.setOpaque(false);
this.upperSlider.setOpaque(false);
}
private void initListeners() {
// Lower
MouseListener[] listeners = this.lowerSlider.getMouseListeners();
for (int i = listeners.length - 1; i >= 0; i--) {
this.lowerSlider.removeMouseListener(listeners[i]);
}
BasicSliderUI.TrackListener trackListener = ((BasicSliderUI) this.lowerSlider.getUI()).new TrackListener() {
@Override
public boolean shouldScroll(int dir) {
setComponentZOrder(upperSlider, 0);
upperSlider.setPaintTrack(false);
lowerSlider.setPaintTrack(true);
return false;
}
};
this.lowerSlider.addMouseListener(trackListener);
// Upper
listeners = this.upperSlider.getMouseListeners();
for (int i = listeners.length - 1; i >= 0; i--) {
this.upperSlider.removeMouseListener(listeners[i]);
}
trackListener = ((BasicSliderUI) this.upperSlider.getUI()).new TrackListener() {
@Override
public boolean shouldScroll(int dir) {
setComponentZOrder(lowerSlider, 0);
lowerSlider.setPaintTrack(false);
upperSlider.setPaintTrack(true);
return false;
}
};
this.upperSlider.addMouseListener(trackListener);
}
public void setUpperValue(int n) {
this.upperSlider.setValue(n);
}
public void setLowerValue(int n) {
this.lowerSlider.setValue(n);
}
public int getLowerValue() {
return this.lowerSlider.getValue();
}
public int getUpperValue() {
return this.upperSlider.getValue();
}
public void setMajorTickSpacing(int n) {
this.lowerSlider.setMajorTickSpacing(n);
this.upperSlider.setMajorTickSpacing(n);
}
public void setPaintTicks(boolean b) {
this.lowerSlider.setPaintTicks(b);
this.upperSlider.setPaintTicks(b);
}
public void setPaintLabels(boolean b) {
this.lowerSlider.setPaintLabels(b);
this.upperSlider.setPaintLabels(b);
}
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
JFrame frame = new JFrame();
JRangeSliderPanel slider = new JRangeSliderPanel(JSlider.HORIZONTAL, 0, 500, 50, 320);
slider.setMajorTickSpacing(100);
slider.setPaintTicks(true);
slider.setPaintLabels(true);
frame.add(slider);
frame.setSize(400, 400);
frame.setVisible(true);
}
} |
