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Add support to the slider to format the value #574

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merged 1 commit into from
Mar 15, 2024
Merged

Add support to the slider to format the value #574

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29 changes: 28 additions & 1 deletion ...a.widgets.nebulaslider/src/org/eclipse/nebula/widgets/opal/nebulaslider/NebulaSlider.java
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@
*******************************************************************************/
package org.eclipse.nebula.widgets.opal.nebulaslider;

import java.util.function.IntFunction;

import org.eclipse.nebula.widgets.opal.commons.SelectionListenerUtil;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
Expand Down Expand Up @@ -47,6 +49,8 @@ public class NebulaSlider extends Canvas {

private boolean moving = false;

private IntFunction<String> format;

/**
* Constructs a new instance of this class given its parent and a style value
* describing its behavior and appearance.
Expand Down Expand Up @@ -181,7 +185,7 @@ private void drawSelector(final GC gc) {
// And the value
gc.setForeground(renderer.getSelectorTextColor());
gc.setFont(renderer.getTextFont());
final String valueAsString = String.valueOf(value);
final String valueAsString = stringValueOf(value);
final Point textSize = gc.textExtent(valueAsString);

final int xText = hMargin + xPosition + selectorWidth / 2;
Expand All @@ -190,6 +194,29 @@ private void drawSelector(final GC gc) {
gc.drawText(valueAsString, xText - textSize.x / 2, yText - textSize.y / 2, true);
}

private String stringValueOf(int value) {
if(format != null) {
return format.apply(value);
}
return String.valueOf(value);
}

/**
* Set the format that should be used to format the given number to a string.
*
* @param format
* the format or <code>null</code> to use the default format.
*/
public void setLabelFormatProvider(IntFunction<String> format) {
checkWidget();
this.format = format;
}

public IntFunction<String> getLabelFormatProvider() {
checkWidget();
return format;
}

private void addMouseListeners() {

addListener(SWT.MouseDown, e -> {
Expand Down
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