/* (@)LabeledSliderTestGui.java */
/* Copyright 2010 Sebastian Haufe
* Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
[url]http://www.apache.org/licenses/LICENSE-2.0[/url]
* Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
package com.ebenius;
import java.awt.Component;
import java.awt.GridLayout;
import java.util.Dictionary;
import java.util.Enumeration;
import javax.swing.*;
import javax.swing.border.Border;
public class LabeledSliderTestGui {
@SuppressWarnings("unchecked")
private static int calculateTrackIndent(JSlider slider) {
int labelInset = 0;
final Dictionary labelTable;
if (slider.getPaintLabels()
&& slider.getOrientation() == JSlider.HORIZONTAL
&& (labelTable = slider.getLabelTable()) != null) {
final Enumeration labels = labelTable.elements();
final Component first =
!labels.hasMoreElements() ? null : (Component) labels
.nextElement();
Component last = first;
while (labels.hasMoreElements()) {
last = (Component) labels.nextElement();
}
final int firstWidth = first == null ? 0 : first.getWidth();
final int lastWidth = last == null ? 0 : last.getWidth();
labelInset = Math.max(firstWidth, lastWidth) / 2;
}
return labelInset;
}
private static int calculateMaximumTrackIndent(JSlider... sliders) {
int result = 0;
for (JSlider slider : sliders) {
result = Math.max(result, calculateTrackIndent(slider));
}
return result;
}
private static void setIndentingBorders(JSlider... sliders) {
final int maxIndent = calculateMaximumTrackIndent(sliders);
for (JSlider slider : sliders) {
final int myIndent = calculateTrackIndent(slider);
final Border indentingBorder =
BorderFactory.createEmptyBorder(0, maxIndent - myIndent, 0,
maxIndent - myIndent);
final Border sliderBorder = slider.getBorder();
if (sliderBorder != null) {
slider.setBorder(BorderFactory.createCompoundBorder(indentingBorder,
sliderBorder));
} else {
slider.setBorder(indentingBorder);
}
}
}
private static void createAndShowGui() {
final JSlider slider = new JSlider(-10, 10, 0);
slider.setMajorTickSpacing(10);
slider.setPaintLabels(true);
slider.setPaintTicks(true);
slider.setPaintTrack(true);
final JSlider slider2 = new JSlider(-10000, 10000, 0);
slider2.setMajorTickSpacing(10000);
slider2.setPaintLabels(true);
slider2.setPaintTicks(true);
slider2.setPaintTrack(true);
setIndentingBorders(slider, slider2);
final JPanel contentPane = new JPanel(new GridLayout(0, 1, 6, 6));
contentPane.add(slider);
contentPane.add(slider2);
final JFrame f = new JFrame("Test Frame: LabeledSliderTestGui"); //$NON-NLS-1$
f.setContentPane(contentPane);
f.pack();
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}