JSci.swing.JSliderPlus Maven / Gradle / Ivy
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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software.
It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ...
Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).
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package JSci.swing;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.text.*;
import java.util.*;
/** A place where JPointers can be placed.
JPointers must be added. */
public class JSliderPlus extends JPanel {
private double startValue;
private double endValue;
private double minorTic = 10;
private double majorTic = 20;
private boolean setPaintMinorTicks = true;
private boolean setPaintMajorTicks = true;
private boolean setPaintLabels = true;
private ArrayList sliders = new ArrayList();
private ChangeListener changeListener = new ChangeListener() {
public void stateChanged(ChangeEvent event) {
repaint();
}
};
/** For building a vertical SliderHolder */
public static final int VERTICAL = 0;
/** For building a horizontal SliderHolder */
public static final int HORIZONTAL = 1;
/** constructs a SliderHolder with no sliders; the sliders will move
* inside a given range.
* @param o orientation (currently only VERTICAL)
* @param start starting value of the SliderHolder
* @param end end value of the SliderHolder
*/
public JSliderPlus(int o,double start,double end) {
startValue=start;
endValue=end;
setSize(getPreferredSize());
updateMinorTics();
updateMajorTics();
addMouseListener(new TheMouseListener());
addMouseMotionListener(new TheMouseMotionListener());
}
/** set the limits of the Slider
* @param start starting value of the SliderHolder
* @param end end value of the SliderHolder
*/
public void setLimits(double start,double end) {
startValue=start;
endValue=end;
setSize(getPreferredSize());
updateMinorTics();
updateMajorTics();
}
/** as described in java.awt.Component */
public Dimension getPreferredSize() {
return new Dimension(100,200);
}
/** set the spacing between minor tics
* @param s the spacing between minor tics
*/
public void setMinorTickSpacing(double s) {
minorTic = s;
updateMinorTics();
repaint();
}
/** set the spacing between major tics
* @param s the spacing between major tics
*/
public void setMajorTickSpacing(double s) {
majorTic = s;
updateMajorTics();
repaint();
}
/** show the minor tics?
* @param b show the minor tics?
*/
public void setPaintMinorTicks(boolean b) {
setPaintMinorTicks = b;
repaint();
}
/** show the major tics?
* @param b show the major tics?
*/
public void setPaintMajorTicks(boolean b) {
setPaintMajorTicks = b;
repaint();
}
/** show the tic labels?
* @param b show the tic labels?
*/
public void setPaintLabels(boolean b) {
setPaintLabels = b;
repaint();
}
private Line2D [] minorTics = null;
private Line2D [] majorTics = null;
private Point2D [] ticLabelPos = null;
private String [] ticLabelText = null;
private static NumberFormat formatter;
static {
formatter = NumberFormat.getNumberInstance();
formatter.setMaximumFractionDigits(2);
formatter.setMaximumIntegerDigits(3);
}
private void updateMinorTics() {
double width = getSize().getWidth();
double heigth = getSize().getHeight();
int N =(int)Math.abs((endValue-startValue)/minorTic);
minorTics = new Line2D[N+1];
for (int j=0;j<=N;j++)
minorTics[j] = new Line2D.Double(
width*0.3,heigth*(0.9-j*0.8/N),
width*0.4,heigth*(0.9-j*0.8/N)
);
}
private void updateMajorTics() {
double width = getSize().getWidth();
double heigth = getSize().getHeight();
int N =(int)Math.abs((endValue-startValue)/majorTic);
majorTics = new Line2D[N+1];
ticLabelPos = new Point2D[N+1];
ticLabelText = new String[N+1];
for (int j=0;j<=N;j++) {
majorTics[j] =
new Line2D.Double(
width*0.25,heigth*(0.9-j*0.8/N),
width*0.4,heigth*(0.9-j*0.8/N)
);
ticLabelText[j] = formatter.format(startValue+j*(endValue-startValue)/N);
ticLabelPos[j] =
new Point2D.Double(0.0,heigth*(0.9-j*0.8/N)+6);
}
}
/** draw the component - don't call this directly, but use repaint() */
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.draw(new Rectangle2D.Double(
getSize().getWidth()*0.45,getSize().getHeight()*0.05,
getSize().getWidth()*0.1,getSize().getHeight()*0.9)
);
if (setPaintMinorTicks)
for (int j=0;j=0;j--)
if (((JPointer)sliders.get(j)).contains(e.getPoint())) {
dragged=(JPointer)sliders.get(j);
dragDelta=dragged.getValue()-mousePosition(e);
dragged.setAdjusting(true);
break;
}
}
public void mouseReleased(MouseEvent e) {
if (dragged!=null) dragged.setAdjusting(false);
dragged = null;
boolean inside = false;
for (int j=0;jMath.max(startValue,endValue)) to=Math.max(startValue,endValue);
if (to