private void updateLabelSizes() {
Dictionary labelTable = getLabelTable();
if (labelTable != null) {
Enumeration labels = labelTable.elements();
while (labels.hasMoreElements()) {
JComponent component = (JComponent) labels.nextElement();
component.setSize(component.getPreferredSize());
}
}
}
/**
* Updates the UIs for the labels in the label table by calling {@code updateUI} on each label.
* The UIs are updated from the current look and feel. The labels are also set to their preferred
* size.
*
* @see #setLabelTable
* @see JComponent#updateUI
*/
protected void updateLabelUIs() {
Dictionary labelTable = getLabelTable();
if (labelTable == null) {
return;
}
Enumeration labels = labelTable.keys();
while (labels.hasMoreElements()) {
JComponent component = (JComponent) labelTable.get(labels.nextElement());
component.updateUI();
component.setSize(component.getPreferredSize());
}
}
/**
* {@inheritDoc}
*
* @since 1.7
*/
public boolean imageUpdate(Image img, int infoflags, int x, int y, int w, int h) {
if (!isShowing()) {
return false;
}
// Check that there is a label with such image
Enumeration elements = labelTable.elements();
while (elements.hasMoreElements()) {
Component component = (Component) elements.nextElement();
if (component instanceof JLabel) {
JLabel label = (JLabel) component;
if (SwingUtilities.doesIconReferenceImage(label.getIcon(), img)
|| SwingUtilities.doesIconReferenceImage(label.getDisabledIcon(), img)) {
return super.imageUpdate(img, infoflags, x, y, w, h);
}
}
}
return false;
}
public SliderTestFrame() {
setTitle("SliderTest");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
sliderPanel = new JPanel();
sliderPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
// common listener for all sliders
listener =
new ChangeListener() {
public void stateChanged(ChangeEvent event) {
// update text field when the slider value changes
JSlider source = (JSlider) event.getSource();
textField.setText("" + source.getValue());
}
};
// add a plain slider
JSlider slider = new JSlider();
addSlider(slider, "Plain");
// add a slider with major and minor ticks
slider = new JSlider();
slider.setPaintTicks(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(5);
addSlider(slider, "Ticks");
// add a slider that snaps to ticks
slider = new JSlider();
slider.setPaintTicks(true);
slider.setSnapToTicks(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(5);
addSlider(slider, "Snap to ticks");
// add a slider with no track
slider = new JSlider();
slider.setPaintTicks(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(5);
slider.setPaintTrack(false);
addSlider(slider, "No track");
// add an inverted slider
slider = new JSlider();
slider.setPaintTicks(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(5);
slider.setInverted(true);
addSlider(slider, "Inverted");
// add a slider with numeric labels
slider = new JSlider();
slider.setPaintTicks(true);
slider.setPaintLabels(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(5);
addSlider(slider, "Labels");
// add a slider with alphabetic labels
slider = new JSlider();
slider.setPaintLabels(true);
slider.setPaintTicks(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(5);
Dictionary<Integer, Component> labelTable = new Hashtable<Integer, Component>();
labelTable.put(0, new JLabel("A"));
labelTable.put(20, new JLabel("B"));
labelTable.put(40, new JLabel("C"));
labelTable.put(60, new JLabel("D"));
labelTable.put(80, new JLabel("E"));
labelTable.put(100, new JLabel("F"));
slider.setLabelTable(labelTable);
addSlider(slider, "Custom labels");
// add a slider with icon labels
slider = new JSlider();
slider.setPaintTicks(true);
slider.setPaintLabels(true);
slider.setSnapToTicks(true);
slider.setMajorTickSpacing(20);
slider.setMinorTickSpacing(20);
labelTable = new Hashtable<Integer, Component>();
// add card images
labelTable.put(0, new JLabel(new ImageIcon("nine.gif")));
labelTable.put(20, new JLabel(new ImageIcon("ten.gif")));
labelTable.put(40, new JLabel(new ImageIcon("jack.gif")));
labelTable.put(60, new JLabel(new ImageIcon("queen.gif")));
labelTable.put(80, new JLabel(new ImageIcon("king.gif")));
labelTable.put(100, new JLabel(new ImageIcon("ace.gif")));
slider.setLabelTable(labelTable);
addSlider(slider, "Icon labels");
// add the text field that displays the slider value
textField = new JTextField();
add(sliderPanel, BorderLayout.CENTER);
add(textField, BorderLayout.SOUTH);
}
