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package org.helioviewer.jhv.internal_plugins.filter.opacity;
import javax.swing.BoxLayout;
import javax.swing.JSpinner;
import javax.swing.JTextField;
import javax.swing.SpinnerNumberModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.helioviewer.jhv.gui.components.WheelSupport;
import org.helioviewer.viewmodel.filter.Filter;
import org.helioviewer.viewmodelplugin.filter.FilterAlignmentDetails;
import org.helioviewer.viewmodelplugin.filter.FilterPanel;
import org.helioviewer.viewmodelplugin.filter.FilterTabPanelManager.Area;
/**
* Panel containing a spinner for changing the opacity of the image.
*
* @author Markus Langenberg
* @author Malte Nuhn
*/
public class OpacityPanel extends FilterPanel implements ChangeListener, FilterAlignmentDetails {
private static final long serialVersionUID = 1L;
private JSpinner opacitySpinner;
private OpacityFilter filter;
/**
* Default constructor.
*
*/
public OpacityPanel() {
setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
// title.setPreferredSize(new Dimension(AbstractFilterPanel.titleWidth,
// AbstractFilterPanel.height));
// add(title);
opacitySpinner = new JSpinner();
opacitySpinner.setModel(new SpinnerNumberModel(new Float(1), new Float(0), new Float(1), new Float(0.05f)));
opacitySpinner.addChangeListener(this);
JSpinner.NumberEditor editor = new JSpinner.NumberEditor(opacitySpinner, "0%");
opacitySpinner.setEditor(editor);
editor.getTextField().setColumns(3);
editor.getTextField().setHorizontalAlignment(JTextField.CENTER);
WheelSupport.installMouseWheelSupport(opacitySpinner);
add(opacitySpinner);
setEnabled(false);
}
/**
* Override the setEnabled method in order to keep the containing
* components' enabledState synced with the enabledState of this component.
*/
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
opacitySpinner.setEnabled(enabled);
}
/**
* {@inheritDoc}
*/
@Override
public void setFilter(Filter filter) {
if (filter instanceof OpacityFilter) {
this.filter = (OpacityFilter) filter;
this.filter.setPanel(this);
setEnabled(true);
} else {
setEnabled(false);
}
}
/**
* {@inheritDoc}
*/
@Override
public Area getArea() {
return Area.TOP;
}
/**
* Sets the opacity of the image.
*/
public void stateChanged(ChangeEvent e) {
if (filter != null) {
float value = ((SpinnerNumberModel) opacitySpinner.getModel()).getNumber().floatValue();
filter.setOpacity(value);
}
}
/**
* Sets the opacity value.
*
* This may be useful, if the opacity is changed from another source than
* the slider itself.
*
* @param opacity
* New opacity value. Must be within [0, 100]
*/
void setValue(float opacity) {
((SpinnerNumberModel) opacitySpinner.getModel()).setValue(opacity);
}
/**
* {@inheritDoc}
*/
public int getDetails() {
return FilterAlignmentDetails.POSITION_OPACITY;
}
}
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