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    <p>I should have answered this ages ago as I did eventually find a work around.<br> I modified code for a range slider from here: <a href="http://ernienotes.wordpress.com/2010/12/27/creating-a-java-swing-range-slider/" rel="nofollow">http://ernienotes.wordpress.com/2010/12/27/creating-a-java-swing-range-slider/</a> Sorry, I had to remove the Java Doc comments to fit it in the 3000 chars limit.</p> <p>The slider class code is this:</p> <pre><code>import javax.swing.JSlider; public class RangeSlider extends JSlider { RangeSliderUI rangeUI; public RangeSlider() { initSlider(); } public RangeSlider(int min, int max) { super(min, max); initSlider(); } private void initSlider() { setOrientation(HORIZONTAL); } @Override public void updateUI() { rangeUI = new RangeSliderUI(this); setUI(rangeUI); // Update UI for slider labels. This must be called after updating the // UI of the slider. Refer to JSlider.updateUI(). updateLabelUIs(); } @Override public int getValue() { return super.getValue(); } public RangeSliderUI getRangeUI() { return rangeUI; } @Override public void setValue(int value) { int oldValue = getValue(); if (oldValue == value) { return; } // Compute new value and extent to maintain upper value. int oldExtent = getExtent(); int newValue = Math.min(Math.max(getMinimum(), value), oldValue + oldExtent); int newExtent = oldExtent + oldValue - newValue; // Set new value and extent, and fire a single change event. getModel().setRangeProperties(newValue, newExtent, getMinimum(), getMaximum(), getValueIsAdjusting()); } public int getUpperValue() { return getValue() + getExtent(); } /** * Sets the upper value in the range. */ public void setUpperValue(int value) { // Compute new extent. int lowerValue = getValue(); int newExtent = Math.min(Math.max(0, value - lowerValue), getMaximum() - lowerValue); // Set extent to set upper value. setExtent(newExtent); } public boolean isRangeSlider() { return rangeUI.isRangeSlider(); } /** * Sets whether this is currently a range slider or not. (true is range slider, false is not range slider) */ public void setRangeSlider(boolean rangeSlider) { this.rangeUI.setRangeSlider(rangeSlider); } } </code></pre> <p>The UI class is this:</p> <pre><code>package YourPackage; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.Polygon; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.event.MouseEvent; import javax.swing.JComponent; import javax.swing.JSlider; import javax.swing.SwingUtilities; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import javax.swing.plaf.basic.BasicSliderUI; /** * UI delegate for the RangeSlider component. RangeSliderUI paints two thumbs, * one for the lower value and one for the upper value. * * Setting rangeSlider = false; causes the slider to revert to being a normal slider * rather than a range slider. */ class RangeSliderUI extends BasicSliderUI { /** Color of selected range. */ private Color rangeColor = Color.darkGray; /** Location and size of thumb for upper value. */ private Rectangle upperThumbRect; /** Indicator that determines whether upper thumb is selected. */ private boolean upperThumbSelected; /** Indicator that determines whether lower thumb is being dragged. */ private transient boolean lowerDragging; /** Indicator that determines whether upper thumb is being dragged. */ private transient boolean upperDragging; // Range/single slider (true is range slider/ false is single slider) private boolean rangeSlider = false; public RangeSliderUI(RangeSlider b) { super(b); } public int getTrackRect() { return trackRect.x; } public boolean isRangeSlider() { return rangeSlider; } public void setRangeSlider(boolean rangeSlider) { this.rangeSlider = rangeSlider; } @Override public void installUI(JComponent c) { upperThumbRect = new Rectangle(); super.installUI(c); } @Override protected TrackListener createTrackListener(JSlider slider) { return new RangeTrackListener(); } @Override protected ChangeListener createChangeListener(JSlider slider) { return new ChangeHandler(); } @Override protected void calculateThumbSize() { // Call superclass method for lower thumb size. super.calculateThumbSize(); // Set upper thumb size. upperThumbRect.setSize(thumbRect.width, thumbRect.height); } @Override protected void calculateThumbLocation() { // Call superclass method for lower thumb location. super.calculateThumbLocation(); // Adjust upper value to snap to ticks if necessary. if (slider.getSnapToTicks()) { int upperValue = slider.getValue() + slider.getExtent(); int snappedValue = upperValue; int majorTickSpacing = slider.getMajorTickSpacing(); int minorTickSpacing = slider.getMinorTickSpacing(); int tickSpacing = 0; if (minorTickSpacing &gt; 0) { tickSpacing = minorTickSpacing; } else if (majorTickSpacing &gt; 0) { tickSpacing = majorTickSpacing; } if (tickSpacing != 0) { // If it's not on a tick, change the value if ((upperValue - slider.getMinimum()) % tickSpacing != 0) { float temp = (float) (upperValue - slider.getMinimum()) / (float) tickSpacing; int whichTick = Math.round(temp); snappedValue = slider.getMinimum() + (whichTick * tickSpacing); } if (snappedValue != upperValue) { slider.setExtent(snappedValue - slider.getValue()); } } } // Calculate upper thumb location. The thumb is centered over its value on the track. if (slider.getOrientation() == JSlider.HORIZONTAL) { int upperPosition = xPositionForValue(slider.getValue() + slider.getExtent()); upperThumbRect.x = upperPosition - (upperThumbRect.width / 2); upperThumbRect.y = trackRect.y; } else { int upperPosition = yPositionForValue(slider.getValue() + slider.getExtent()); upperThumbRect.x = trackRect.x; upperThumbRect.y = upperPosition - (upperThumbRect.height / 2); } } @Override protected Dimension getThumbSize() { return new Dimension(12, 12); } @Override public void paint(Graphics g, JComponent c) { super.paint(g, c); } @Override public void paintTrack(Graphics g) { // Draw track. super.paintTrack(g); Rectangle trackBounds = trackRect; if (rangeSlider) { if (slider.getOrientation() == JSlider.HORIZONTAL) { // Determine position of selected range by moving from the middle // of one thumb to the other. int lowerX = thumbRect.x + (thumbRect.width / 2); int upperX = upperThumbRect.x + (upperThumbRect.width / 2); // Determine track position. int cy = (trackBounds.height / 2) - 2; // Save color and shift position. Color oldColor = g.getColor(); g.translate(trackBounds.x, trackBounds.y + cy); // Draw selected range. g.setColor(rangeColor); for (int y = 0; y &lt;= 3; y++) { g.drawLine(lowerX - trackBounds.x, y, upperX - trackBounds.x, y); } // Restore position and color. g.translate(-trackBounds.x, -(trackBounds.y + cy)); g.setColor(oldColor); } else { // Determine position of selected range by moving from the middle // of one thumb to the other. int lowerY = thumbRect.x + (thumbRect.width / 2); int upperY = upperThumbRect.x + (upperThumbRect.width / 2); // Determine track position. int cx = (trackBounds.width / 2) - 2; // Save color and shift position. Color oldColor = g.getColor(); g.translate(trackBounds.x + cx, trackBounds.y); // Draw selected range. g.setColor(rangeColor); for (int x = 0; x &lt;= 3; x++) { g.drawLine(x, lowerY - trackBounds.y, x, upperY - trackBounds.y); } // Restore position and color. g.translate(-(trackBounds.x + cx), -trackBounds.y); g.setColor(oldColor); } } // Shifted the knob painting to here so it is painted with the track or not. Rectangle clipRect = g.getClipBounds(); if (upperThumbSelected) { // Paint lower thumb first, then upper thumb. if (clipRect.intersects(thumbRect)) { paintLowerThumb(g); } if (clipRect.intersects(upperThumbRect)) { paintUpperThumb(g); } } else { // Paint upper thumb first, then lower thumb. if (clipRect.intersects(upperThumbRect)) { paintUpperThumb(g); } if (clipRect.intersects(thumbRect)) { paintLowerThumb(g); } } } @Override public void paintThumb(Graphics g) { } private void paintLowerThumb(Graphics g) { Rectangle knobBounds = thumbRect; int w = knobBounds.width; int h = knobBounds.height; // Create graphics copy. Graphics2D g2d = (Graphics2D) g.create(); // Create default thumb shape. Shape thumbShape = createThumbShape(w - 1, h - 1); // Draw thumb. g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2d.translate(knobBounds.x, knobBounds.y); g2d.setColor(Color.CYAN); g2d.fill(thumbShape); g2d.setColor(Color.BLUE); g2d.draw(thumbShape); // Dispose graphics. g2d.dispose(); } private void paintUpperThumb(Graphics g) { if (rangeSlider) { Rectangle knobBounds = upperThumbRect; int w = knobBounds.width; int h = knobBounds.height; // Create graphics copy. Graphics2D g2d = (Graphics2D) g.create(); // Create default thumb shape. Shape thumbShape = createThumbShape(w - 1, h - 1); // Draw thumb. g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2d.translate(knobBounds.x, knobBounds.y); g2d.setColor(Color.orange); g2d.fill(thumbShape); g2d.setColor(Color.orange.darker().darker()); g2d.draw(thumbShape); // Dispose graphics. g2d.dispose(); } } private Shape createThumbShape(int width, int height) { Point p1 = new Point(0, 0); Point p2 = new Point(width, 0); Point p3 = new Point(width, (height / 2) + 1); Point p4 = new Point((width / 2) + 1, height); Point p5 = new Point(0, (height / 2) + 1); int[] xs = { p1.x, p2.x, p3.x, p4.x, p5.x }; int[] ys = { p1.y, p2.y, p3.y, p4.y, p5.y }; Polygon thumb = new Polygon(xs, ys, xs.length); return thumb; } private void setUpperThumbLocation(int x, int y) { Rectangle upperUnionRect = new Rectangle(); upperUnionRect.setBounds(upperThumbRect); upperThumbRect.setLocation(x, y); SwingUtilities.computeUnion(upperThumbRect.x, upperThumbRect.y, upperThumbRect.width, upperThumbRect.height, upperUnionRect); slider.repaint(upperUnionRect.x, upperUnionRect.y, upperUnionRect.width, upperUnionRect.height); } @Override public void scrollByBlock(int direction) { synchronized (slider) { int blockIncrement = (slider.getMaximum() - slider.getMinimum()) / 10; if (blockIncrement &lt;= 0 &amp;&amp; slider.getMaximum() &gt; slider.getMinimum()) { blockIncrement = 1; } int delta = blockIncrement * ((direction &gt; 0) ? POSITIVE_SCROLL : NEGATIVE_SCROLL); if (upperThumbSelected) { int oldValue = ((RangeSlider) slider).getUpperValue(); ((RangeSlider) slider).setUpperValue(oldValue + delta); } else { int oldValue = slider.getValue(); slider.setValue(oldValue + delta); } } } @Override public void scrollByUnit(int direction) { synchronized (slider) { int delta = 1 * ((direction &gt; 0) ? POSITIVE_SCROLL : NEGATIVE_SCROLL); if (upperThumbSelected) { int oldValue = ((RangeSlider) slider).getUpperValue(); ((RangeSlider) slider).setUpperValue(oldValue + delta); } else { int oldValue = slider.getValue(); slider.setValue(oldValue + delta); } } } public class ChangeHandler implements ChangeListener { public void stateChanged(ChangeEvent arg0) { if (!lowerDragging &amp;&amp; !upperDragging) { calculateThumbLocation(); slider.repaint(); } } } public class RangeTrackListener extends TrackListener { @Override public void mousePressed(MouseEvent e) { if (!slider.isEnabled()) { return; } currentMouseX = e.getX(); currentMouseY = e.getY(); if (slider.isRequestFocusEnabled()) { slider.requestFocus(); } // Determine which thumb is pressed. If the upper thumb is selected (last one dragged), then check its position first; // otherwise check the position of the lower thumb first. boolean lowerPressed = false; boolean upperPressed = false; if (upperThumbSelected) { // Only enable upper slider movement if in range mode. if (upperThumbRect.contains(currentMouseX, currentMouseY) &amp;&amp; rangeSlider) { upperPressed = true; } else { if (thumbRect.contains(currentMouseX, currentMouseY)) { lowerPressed = true; } } } else { if (thumbRect.contains(currentMouseX, currentMouseY)) { lowerPressed = true; } else { // Only enable if in range mode. if (upperThumbRect.contains(currentMouseX, currentMouseY) &amp;&amp; rangeSlider) { upperPressed = true; } } } // Handle lower thumb pressed. if (lowerPressed) { switch (slider.getOrientation()) { case JSlider.VERTICAL: offset = currentMouseY - thumbRect.y; break; case JSlider.HORIZONTAL: offset = currentMouseX - thumbRect.x; break; } upperThumbSelected = false; lowerDragging = true; return; } lowerDragging = false; // Handle upper thumb pressed. if (upperPressed) { switch (slider.getOrientation()) { case JSlider.VERTICAL: offset = currentMouseY - upperThumbRect.y; break; case JSlider.HORIZONTAL: offset = currentMouseX - upperThumbRect.x; break; } upperThumbSelected = true; upperDragging = true; return; } upperDragging = false; } @Override public void mouseReleased(MouseEvent e) { lowerDragging = false; upperDragging = false; slider.setValueIsAdjusting(false); super.mouseReleased(e); } @Override public void mouseDragged(MouseEvent e) { if (!slider.isEnabled()) { return; } currentMouseX = e.getX(); currentMouseY = e.getY(); if (lowerDragging) { slider.setValueIsAdjusting(true); moveLowerThumb(); } else if (upperDragging) { slider.setValueIsAdjusting(true); moveUpperThumb(); } } @Override public boolean shouldScroll(int direction) { return false; } private void moveLowerThumb() { int thumbMiddle = 0; switch (slider.getOrientation()) { case JSlider.VERTICAL: int halfThumbHeight = thumbRect.height / 2; int thumbTop = currentMouseY - offset; int trackTop = trackRect.y; int trackBottom = trackRect.y + (trackRect.height - 1); int vMax = yPositionForValue(slider.getValue() + slider.getExtent()); // Apply bounds to thumb position. if (drawInverted()) { trackBottom = vMax; } else { trackTop = vMax; } thumbTop = Math.max(thumbTop, trackTop - halfThumbHeight); thumbTop = Math.min(thumbTop, trackBottom - halfThumbHeight); setThumbLocation(thumbRect.x, thumbTop); // Update slider value. thumbMiddle = thumbTop + halfThumbHeight; slider.setValue(valueForYPosition(thumbMiddle)); break; case JSlider.HORIZONTAL: int halfThumbWidth = thumbRect.width / 2; int thumbLeft = currentMouseX - offset; int trackLeft = trackRect.x; int trackRight = trackRect.x + (trackRect.width - 1); int hMax = xPositionForValue(slider.getValue() + slider.getExtent()); // Apply bounds to thumb position. if (drawInverted()) { trackLeft = hMax; } else { trackRight = hMax; } thumbLeft = Math.max(thumbLeft, trackLeft - halfThumbWidth); thumbLeft = Math.min(thumbLeft, trackRight - halfThumbWidth); setThumbLocation(thumbLeft, thumbRect.y); // Update slider value. thumbMiddle = thumbLeft + halfThumbWidth; slider.setValue(valueForXPosition(thumbMiddle)); break; default: return; } } private void moveUpperThumb() { int thumbMiddle = 0; switch (slider.getOrientation()) { case JSlider.VERTICAL: int halfThumbHeight = thumbRect.height / 2; int thumbTop = currentMouseY - offset; int trackTop = trackRect.y; int trackBottom = trackRect.y + (trackRect.height - 1); int vMin = yPositionForValue(slider.getValue()); // Apply bounds to thumb position. if (drawInverted()) { trackTop = vMin; } else { trackBottom = vMin; } thumbTop = Math.max(thumbTop, trackTop - halfThumbHeight); thumbTop = Math.min(thumbTop, trackBottom - halfThumbHeight); setUpperThumbLocation(thumbRect.x, thumbTop); // Update slider extent. thumbMiddle = thumbTop + halfThumbHeight; slider.setExtent(valueForYPosition(thumbMiddle) - slider.getValue()); break; case JSlider.HORIZONTAL: int halfThumbWidth = thumbRect.width / 2; int thumbLeft = currentMouseX - offset; int trackLeft = trackRect.x; int trackRight = trackRect.x + (trackRect.width - 1); int hMin = xPositionForValue(slider.getValue()); // Apply bounds to thumb position. if (drawInverted()) { trackRight = hMin; } else { trackLeft = hMin; } thumbLeft = Math.max(thumbLeft, trackLeft - halfThumbWidth); thumbLeft = Math.min(thumbLeft, trackRight - halfThumbWidth); setUpperThumbLocation(thumbLeft, thumbRect.y); // Update slider extent. thumbMiddle = thumbLeft + halfThumbWidth; slider.setExtent(valueForXPosition(thumbMiddle) - slider.getValue()); break; default: return; } } } } </code></pre> <p>The x position for the track rectangle (which is also the position of the first tick mark) , to align your graph to the slider, is gotten by calling:</p> <pre><code>rangeSlider1.getRangeUI().getTrackRect() </code></pre> <p>I also didn't like their round knobs and changed them to the more traditional shape.</p>
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